diff options
Diffstat (limited to 'tools/lib/traceevent')
22 files changed, 0 insertions, 14162 deletions
diff --git a/tools/lib/traceevent/.gitignore b/tools/lib/traceevent/.gitignore deleted file mode 100644 index 9e9f25fb1922..000000000000 --- a/tools/lib/traceevent/.gitignore +++ /dev/null @@ -1,3 +0,0 @@ -TRACEEVENT-CFLAGS -libtraceevent-dynamic-list -libtraceevent.so.* diff --git a/tools/lib/traceevent/Build b/tools/lib/traceevent/Build deleted file mode 100644 index c681d0575d16..000000000000 --- a/tools/lib/traceevent/Build +++ /dev/null @@ -1,17 +0,0 @@ -libtraceevent-y += event-parse.o -libtraceevent-y += event-plugin.o -libtraceevent-y += trace-seq.o -libtraceevent-y += parse-filter.o -libtraceevent-y += parse-utils.o -libtraceevent-y += kbuffer-parse.o - -plugin_jbd2-y += plugin_jbd2.o -plugin_hrtimer-y += plugin_hrtimer.o -plugin_kmem-y += plugin_kmem.o -plugin_kvm-y += plugin_kvm.o -plugin_mac80211-y += plugin_mac80211.o -plugin_sched_switch-y += plugin_sched_switch.o -plugin_function-y += plugin_function.o -plugin_xen-y += plugin_xen.o -plugin_scsi-y += plugin_scsi.o -plugin_cfg80211-y += plugin_cfg80211.o diff --git a/tools/lib/traceevent/Makefile b/tools/lib/traceevent/Makefile deleted file mode 100644 index 9b8555ea3459..000000000000 --- a/tools/lib/traceevent/Makefile +++ /dev/null @@ -1,299 +0,0 @@ -# trace-cmd version -EP_VERSION = 1 -EP_PATCHLEVEL = 1 -EP_EXTRAVERSION = 0 - -# file format version -FILE_VERSION = 6 - -MAKEFLAGS += --no-print-directory - - -# Makefiles suck: This macro sets a default value of $(2) for the -# variable named by $(1), unless the variable has been set by -# environment or command line. This is necessary for CC and AR -# because make sets default values, so the simpler ?= approach -# won't work as expected. -define allow-override - $(if $(or $(findstring environment,$(origin $(1))),\ - $(findstring command line,$(origin $(1)))),,\ - $(eval $(1) = $(2))) -endef - -# Allow setting CC and AR, or setting CROSS_COMPILE as a prefix. -$(call allow-override,CC,$(CROSS_COMPILE)gcc) -$(call allow-override,AR,$(CROSS_COMPILE)ar) -$(call allow-override,NM,$(CROSS_COMPILE)nm) - -EXT = -std=gnu99 -INSTALL = install - -# Use DESTDIR for installing into a different root directory. -# This is useful for building a package. The program will be -# installed in this directory as if it was the root directory. -# Then the build tool can move it later. -DESTDIR ?= -DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))' - -LP64 := $(shell echo __LP64__ | ${CC} ${CFLAGS} -E -x c - | tail -n 1) -ifeq ($(LP64), 1) - libdir_relative = lib64 -else - libdir_relative = lib -endif - -prefix ?= /usr/local -libdir = $(prefix)/$(libdir_relative) -man_dir = $(prefix)/share/man -man_dir_SQ = '$(subst ','\'',$(man_dir))' - -export man_dir man_dir_SQ INSTALL -export DESTDIR DESTDIR_SQ - -set_plugin_dir := 1 - -# Set plugin_dir to preffered global plugin location -# If we install under $HOME directory we go under -# $(HOME)/.traceevent/plugins -# -# We dont set PLUGIN_DIR in case we install under $HOME -# directory, because by default the code looks under: -# $(HOME)/.traceevent/plugins by default. -# -ifeq ($(plugin_dir),) -ifeq ($(prefix),$(HOME)) -override plugin_dir = $(HOME)/.traceevent/plugins -set_plugin_dir := 0 -else -override plugin_dir = $(libdir)/traceevent/plugins -endif -endif - -ifeq ($(set_plugin_dir),1) -PLUGIN_DIR = -DPLUGIN_DIR="$(plugin_dir)" -PLUGIN_DIR_SQ = '$(subst ','\'',$(PLUGIN_DIR))' -endif - -include ../../scripts/Makefile.include - -# copy a bit from Linux kbuild - -ifeq ("$(origin V)", "command line") - VERBOSE = $(V) -endif -ifndef VERBOSE - VERBOSE = 0 -endif - -ifeq ($(srctree),) -srctree := $(patsubst %/,%,$(dir $(CURDIR))) -srctree := $(patsubst %/,%,$(dir $(srctree))) -srctree := $(patsubst %/,%,$(dir $(srctree))) -#$(info Determined 'srctree' to be $(srctree)) -endif - -export prefix libdir src obj - -# Shell quotes -libdir_SQ = $(subst ','\'',$(libdir)) -libdir_relative_SQ = $(subst ','\'',$(libdir_relative)) -plugin_dir_SQ = $(subst ','\'',$(plugin_dir)) - -CONFIG_INCLUDES = -CONFIG_LIBS = -CONFIG_FLAGS = - -VERSION = $(EP_VERSION) -PATCHLEVEL = $(EP_PATCHLEVEL) -EXTRAVERSION = $(EP_EXTRAVERSION) - -OBJ = $@ -N = - -EVENT_PARSE_VERSION = $(EP_VERSION).$(EP_PATCHLEVEL).$(EP_EXTRAVERSION) - -LIB_TARGET = libtraceevent.a libtraceevent.so.$(EVENT_PARSE_VERSION) -LIB_INSTALL = libtraceevent.a libtraceevent.so* - -INCLUDES = -I. -I $(srctree)/tools/include $(CONFIG_INCLUDES) - -# Set compile option CFLAGS -ifdef EXTRA_CFLAGS - CFLAGS := $(EXTRA_CFLAGS) -else - CFLAGS := -g -Wall -endif - -# Append required CFLAGS -override CFLAGS += -fPIC -override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ) -override CFLAGS += $(udis86-flags) -D_GNU_SOURCE - -ifeq ($(VERBOSE),1) - Q = -else - Q = @ -endif - -# Disable command line variables (CFLAGS) override from top -# level Makefile (perf), otherwise build Makefile will get -# the same command line setup. -MAKEOVERRIDES= - -export srctree OUTPUT CC LD CFLAGS V -build := -f $(srctree)/tools/build/Makefile.build dir=. obj - -PLUGINS = plugin_jbd2.so -PLUGINS += plugin_hrtimer.so -PLUGINS += plugin_kmem.so -PLUGINS += plugin_kvm.so -PLUGINS += plugin_mac80211.so -PLUGINS += plugin_sched_switch.so -PLUGINS += plugin_function.so -PLUGINS += plugin_xen.so -PLUGINS += plugin_scsi.so -PLUGINS += plugin_cfg80211.so - -PLUGINS := $(addprefix $(OUTPUT),$(PLUGINS)) -PLUGINS_IN := $(PLUGINS:.so=-in.o) - -TE_IN := $(OUTPUT)libtraceevent-in.o -LIB_TARGET := $(addprefix $(OUTPUT),$(LIB_TARGET)) -DYNAMIC_LIST_FILE := $(OUTPUT)libtraceevent-dynamic-list - -CMD_TARGETS = $(LIB_TARGET) $(PLUGINS) $(DYNAMIC_LIST_FILE) - -TARGETS = $(CMD_TARGETS) - -all: all_cmd - -all_cmd: $(CMD_TARGETS) - -$(TE_IN): force - $(Q)$(MAKE) $(build)=libtraceevent - -$(OUTPUT)libtraceevent.so.$(EVENT_PARSE_VERSION): $(TE_IN) - $(QUIET_LINK)$(CC) --shared $^ -Wl,-soname,libtraceevent.so.$(EP_VERSION) -o $@ - @ln -sf $(@F) $(OUTPUT)libtraceevent.so - @ln -sf $(@F) $(OUTPUT)libtraceevent.so.$(EP_VERSION) - -$(OUTPUT)libtraceevent.a: $(TE_IN) - $(QUIET_LINK)$(RM) $@; $(AR) rcs $@ $^ - -$(OUTPUT)libtraceevent-dynamic-list: $(PLUGINS) - $(QUIET_GEN)$(call do_generate_dynamic_list_file, $(PLUGINS), $@) - -plugins: $(PLUGINS) - -__plugin_obj = $(notdir $@) - plugin_obj = $(__plugin_obj:-in.o=) - -$(PLUGINS_IN): force - $(Q)$(MAKE) $(build)=$(plugin_obj) - -$(OUTPUT)%.so: $(OUTPUT)%-in.o - $(QUIET_LINK)$(CC) $(CFLAGS) -shared -nostartfiles -o $@ $^ - -define make_version.h - (echo '/* This file is automatically generated. Do not modify. */'; \ - echo \#define VERSION_CODE $(shell \ - expr $(VERSION) \* 256 + $(PATCHLEVEL)); \ - echo '#define EXTRAVERSION ' $(EXTRAVERSION); \ - echo '#define VERSION_STRING "'$(VERSION).$(PATCHLEVEL).$(EXTRAVERSION)'"'; \ - echo '#define FILE_VERSION '$(FILE_VERSION); \ - ) > $1 -endef - -define update_version.h - ($(call make_version.h, $@.tmp); \ - if [ -r $@ ] && cmp -s $@ $@.tmp; then \ - rm -f $@.tmp; \ - else \ - echo ' UPDATE $@'; \ - mv -f $@.tmp $@; \ - fi); -endef - -ep_version.h: force - $(Q)$(N)$(call update_version.h) - -VERSION_FILES = ep_version.h - -define update_dir - (echo $1 > $@.tmp; \ - if [ -r $@ ] && cmp -s $@ $@.tmp; then \ - rm -f $@.tmp; \ - else \ - echo ' UPDATE $@'; \ - mv -f $@.tmp $@; \ - fi); -endef - -tags: force - $(RM) tags - find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \ - --regex-c++='/_PE\(([^,)]*).*/PEVENT_ERRNO__\1/' - -TAGS: force - $(RM) TAGS - find . -name '*.[ch]' | xargs etags \ - --regex='/_PE(\([^,)]*\).*/PEVENT_ERRNO__\1/' - -define do_install_mkdir - if [ ! -d '$(DESTDIR_SQ)$1' ]; then \ - $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$1'; \ - fi -endef - -define do_install - $(call do_install_mkdir,$2); \ - $(INSTALL) $(if $3,-m $3,) $1 '$(DESTDIR_SQ)$2' -endef - -define do_install_plugins - for plugin in $1; do \ - $(call do_install,$$plugin,$(plugin_dir_SQ)); \ - done -endef - -define do_generate_dynamic_list_file - symbol_type=`$(NM) -u -D $1 | awk 'NF>1 {print $$1}' | \ - xargs echo "U W w" | tr ' ' '\n' | sort -u | xargs echo`;\ - if [ "$$symbol_type" = "U W w" ];then \ - (echo '{'; \ - $(NM) -u -D $1 | awk 'NF>1 {print "\t"$$2";"}' | sort -u;\ - echo '};'; \ - ) > $2; \ - else \ - (echo Either missing one of [$1] or bad version of $(NM)) 1>&2;\ - fi -endef - -install_lib: all_cmd install_plugins - $(call QUIET_INSTALL, $(LIB_TARGET)) \ - $(call do_install_mkdir,$(libdir_SQ)); \ - cp -fpR $(LIB_INSTALL) $(DESTDIR)$(libdir_SQ) - -install_plugins: $(PLUGINS) - $(call QUIET_INSTALL, trace_plugins) \ - $(call do_install_plugins, $(PLUGINS)) - -install_headers: - $(call QUIET_INSTALL, headers) \ - $(call do_install,event-parse.h,$(prefix)/include/traceevent,644); \ - $(call do_install,event-utils.h,$(prefix)/include/traceevent,644); \ - $(call do_install,kbuffer.h,$(prefix)/include/traceevent,644) - -install: install_lib - -clean: - $(call QUIET_CLEAN, libtraceevent) \ - $(RM) *.o *~ $(TARGETS) *.a *.so $(VERSION_FILES) .*.d .*.cmd \ - $(RM) TRACEEVENT-CFLAGS tags TAGS - -PHONY += force plugins -force: - -# Declare the contents of the .PHONY variable as phony. We keep that -# information in a variable so we can use it in if_changed and friends. -.PHONY: $(PHONY) diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c deleted file mode 100644 index 7ce724fc0544..000000000000 --- a/tools/lib/traceevent/event-parse.c +++ /dev/null @@ -1,6865 +0,0 @@ -/* - * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; - * version 2.1 of the License (not later!) - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this program; if not, see <http://www.gnu.org/licenses> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * - * The parts for function graph printing was taken and modified from the - * Linux Kernel that were written by - * - Copyright (C) 2009 Frederic Weisbecker, - * Frederic Weisbecker gave his permission to relicense the code to - * the Lesser General Public License. - */ -#include <inttypes.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <stdarg.h> -#include <ctype.h> -#include <errno.h> -#include <stdint.h> -#include <limits.h> -#include <linux/string.h> -#include <linux/time64.h> - -#include <netinet/in.h> -#include "event-parse.h" -#include "event-utils.h" - -static const char *input_buf; -static unsigned long long input_buf_ptr; -static unsigned long long input_buf_siz; - -static int is_flag_field; -static int is_symbolic_field; - -static int show_warning = 1; - -#define do_warning(fmt, ...) \ - do { \ - if (show_warning) \ - warning(fmt, ##__VA_ARGS__); \ - } while (0) - -#define do_warning_event(event, fmt, ...) \ - do { \ - if (!show_warning) \ - continue; \ - \ - if (event) \ - warning("[%s:%s] " fmt, event->system, \ - event->name, ##__VA_ARGS__); \ - else \ - warning(fmt, ##__VA_ARGS__); \ - } while (0) - -static void init_input_buf(const char *buf, unsigned long long size) -{ - input_buf = buf; - input_buf_siz = size; - input_buf_ptr = 0; -} - -const char *pevent_get_input_buf(void) -{ - return input_buf; -} - -unsigned long long pevent_get_input_buf_ptr(void) -{ - return input_buf_ptr; -} - -struct event_handler { - struct event_handler *next; - int id; - const char *sys_name; - const char *event_name; - pevent_event_handler_func func; - void *context; -}; - -struct pevent_func_params { - struct pevent_func_params *next; - enum pevent_func_arg_type type; -}; - -struct pevent_function_handler { - struct pevent_function_handler *next; - enum pevent_func_arg_type ret_type; - char *name; - pevent_func_handler func; - struct pevent_func_params *params; - int nr_args; -}; - -static unsigned long long -process_defined_func(struct trace_seq *s, void *data, int size, - struct event_format *event, struct print_arg *arg); - -static void free_func_handle(struct pevent_function_handler *func); - -/** - * pevent_buffer_init - init buffer for parsing - * @buf: buffer to parse - * @size: the size of the buffer - * - * For use with pevent_read_token(), this initializes the internal - * buffer that pevent_read_token() will parse. - */ -void pevent_buffer_init(const char *buf, unsigned long long size) -{ - init_input_buf(buf, size); -} - -void breakpoint(void) -{ - static int x; - x++; -} - -struct print_arg *alloc_arg(void) -{ - return calloc(1, sizeof(struct print_arg)); -} - -struct cmdline { - char *comm; - int pid; -}; - -static int cmdline_cmp(const void *a, const void *b) -{ - const struct cmdline *ca = a; - const struct cmdline *cb = b; - - if (ca->pid < cb->pid) - return -1; - if (ca->pid > cb->pid) - return 1; - - return 0; -} - -struct cmdline_list { - struct cmdline_list *next; - char *comm; - int pid; -}; - -static int cmdline_init(struct pevent *pevent) -{ - struct cmdline_list *cmdlist = pevent->cmdlist; - struct cmdline_list *item; - struct cmdline *cmdlines; - int i; - - cmdlines = malloc(sizeof(*cmdlines) * pevent->cmdline_count); - if (!cmdlines) - return -1; - - i = 0; - while (cmdlist) { - cmdlines[i].pid = cmdlist->pid; - cmdlines[i].comm = cmdlist->comm; - i++; - item = cmdlist; - cmdlist = cmdlist->next; - free(item); - } - - qsort(cmdlines, pevent->cmdline_count, sizeof(*cmdlines), cmdline_cmp); - - pevent->cmdlines = cmdlines; - pevent->cmdlist = NULL; - - return 0; -} - -static const char *find_cmdline(struct pevent *pevent, int pid) -{ - const struct cmdline *comm; - struct cmdline key; - - if (!pid) - return "<idle>"; - - if (!pevent->cmdlines && cmdline_init(pevent)) - return "<not enough memory for cmdlines!>"; - - key.pid = pid; - - comm = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, - sizeof(*pevent->cmdlines), cmdline_cmp); - - if (comm) - return comm->comm; - return "<...>"; -} - -/** - * pevent_pid_is_registered - return if a pid has a cmdline registered - * @pevent: handle for the pevent - * @pid: The pid to check if it has a cmdline registered with. - * - * Returns 1 if the pid has a cmdline mapped to it - * 0 otherwise. - */ -int pevent_pid_is_registered(struct pevent *pevent, int pid) -{ - const struct cmdline *comm; - struct cmdline key; - - if (!pid) - return 1; - - if (!pevent->cmdlines && cmdline_init(pevent)) - return 0; - - key.pid = pid; - - comm = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, - sizeof(*pevent->cmdlines), cmdline_cmp); - - if (comm) - return 1; - return 0; -} - -/* - * If the command lines have been converted to an array, then - * we must add this pid. This is much slower than when cmdlines - * are added before the array is initialized. - */ -static int add_new_comm(struct pevent *pevent, const char *comm, int pid) -{ - struct cmdline *cmdlines = pevent->cmdlines; - const struct cmdline *cmdline; - struct cmdline key; - - if (!pid) - return 0; - - /* avoid duplicates */ - key.pid = pid; - - cmdline = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, - sizeof(*pevent->cmdlines), cmdline_cmp); - if (cmdline) { - errno = EEXIST; - return -1; - } - - cmdlines = realloc(cmdlines, sizeof(*cmdlines) * (pevent->cmdline_count + 1)); - if (!cmdlines) { - errno = ENOMEM; - return -1; - } - - cmdlines[pevent->cmdline_count].comm = strdup(comm); - if (!cmdlines[pevent->cmdline_count].comm) { - free(cmdlines); - errno = ENOMEM; - return -1; - } - - cmdlines[pevent->cmdline_count].pid = pid; - - if (cmdlines[pevent->cmdline_count].comm) - pevent->cmdline_count++; - - qsort(cmdlines, pevent->cmdline_count, sizeof(*cmdlines), cmdline_cmp); - pevent->cmdlines = cmdlines; - - return 0; -} - -/** - * pevent_register_comm - register a pid / comm mapping - * @pevent: handle for the pevent - * @comm: the command line to register - * @pid: the pid to map the command line to - * - * This adds a mapping to search for command line names with - * a given pid. The comm is duplicated. - */ -int pevent_register_comm(struct pevent *pevent, const char *comm, int pid) -{ - struct cmdline_list *item; - - if (pevent->cmdlines) - return add_new_comm(pevent, comm, pid); - - item = malloc(sizeof(*item)); - if (!item) - return -1; - - if (comm) - item->comm = strdup(comm); - else - item->comm = strdup("<...>"); - if (!item->comm) { - free(item); - return -1; - } - item->pid = pid; - item->next = pevent->cmdlist; - - pevent->cmdlist = item; - pevent->cmdline_count++; - - return 0; -} - -int pevent_register_trace_clock(struct pevent *pevent, const char *trace_clock) -{ - pevent->trace_clock = strdup(trace_clock); - if (!pevent->trace_clock) { - errno = ENOMEM; - return -1; - } - return 0; -} - -struct func_map { - unsigned long long addr; - char *func; - char *mod; -}; - -struct func_list { - struct func_list *next; - unsigned long long addr; - char *func; - char *mod; -}; - -static int func_cmp(const void *a, const void *b) -{ - const struct func_map *fa = a; - const struct func_map *fb = b; - - if (fa->addr < fb->addr) - return -1; - if (fa->addr > fb->addr) - return 1; - - return 0; -} - -/* - * We are searching for a record in between, not an exact - * match. - */ -static int func_bcmp(const void *a, const void *b) -{ - const struct func_map *fa = a; - const struct func_map *fb = b; - - if ((fa->addr == fb->addr) || - - (fa->addr > fb->addr && - fa->addr < (fb+1)->addr)) - return 0; - - if (fa->addr < fb->addr) - return -1; - - return 1; -} - -static int func_map_init(struct pevent *pevent) -{ - struct func_list *funclist; - struct func_list *item; - struct func_map *func_map; - int i; - - func_map = malloc(sizeof(*func_map) * (pevent->func_count + 1)); - if (!func_map) - return -1; - - funclist = pevent->funclist; - - i = 0; - while (funclist) { - func_map[i].func = funclist->func; - func_map[i].addr = funclist->addr; - func_map[i].mod = funclist->mod; - i++; - item = funclist; - funclist = funclist->next; - free(item); - } - - qsort(func_map, pevent->func_count, sizeof(*func_map), func_cmp); - - /* - * Add a special record at the end. - */ - func_map[pevent->func_count].func = NULL; - func_map[pevent->func_count].addr = 0; - func_map[pevent->func_count].mod = NULL; - - pevent->func_map = func_map; - pevent->funclist = NULL; - - return 0; -} - -static struct func_map * -__find_func(struct pevent *pevent, unsigned long long addr) -{ - struct func_map *func; - struct func_map key; - - if (!pevent->func_map) - func_map_init(pevent); - - key.addr = addr; - - func = bsearch(&key, pevent->func_map, pevent->func_count, - sizeof(*pevent->func_map), func_bcmp); - - return func; -} - -struct func_resolver { - pevent_func_resolver_t *func; - void *priv; - struct func_map map; -}; - -/** - * pevent_set_function_resolver - set an alternative function resolver - * @pevent: handle for the pevent - * @resolver: function to be used - * @priv: resolver function private state. - * - * Some tools may have already a way to resolve kernel functions, allow them to - * keep using it instead of duplicating all the entries inside - * pevent->funclist. - */ -int pevent_set_function_resolver(struct pevent *pevent, - pevent_func_resolver_t *func, void *priv) -{ - struct func_resolver *resolver = malloc(sizeof(*resolver)); - - if (resolver == NULL) - return -1; - - resolver->func = func; - resolver->priv = priv; - - free(pevent->func_resolver); - pevent->func_resolver = resolver; - - return 0; -} - -/** - * pevent_reset_function_resolver - reset alternative function resolver - * @pevent: handle for the pevent - * - * Stop using whatever alternative resolver was set, use the default - * one instead. - */ -void pevent_reset_function_resolver(struct pevent *pevent) -{ - free(pevent->func_resolver); - pevent->func_resolver = NULL; -} - -static struct func_map * -find_func(struct pevent *pevent, unsigned long long addr) -{ - struct func_map *map; - - if (!pevent->func_resolver) - return __find_func(pevent, addr); - - map = &pevent->func_resolver->map; - map->mod = NULL; - map->addr = addr; - map->func = pevent->func_resolver->func(pevent->func_resolver->priv, - &map->addr, &map->mod); - if (map->func == NULL) - return NULL; - - return map; -} - -/** - * pevent_find_function - find a function by a given address - * @pevent: handle for the pevent - * @addr: the address to find the function with - * - * Returns a pointer to the function stored that has the given - * address. Note, the address does not have to be exact, it - * will select the function that would contain the address. - */ -const char *pevent_find_function(struct pevent *pevent, unsigned long long addr) -{ - struct func_map *map; - - map = find_func(pevent, addr); - if (!map) - return NULL; - - return map->func; -} - -/** - * pevent_find_function_address - find a function address by a given address - * @pevent: handle for the pevent - * @addr: the address to find the function with - * - * Returns the address the function starts at. This can be used in - * conjunction with pevent_find_function to print both the function - * name and the function offset. - */ -unsigned long long -pevent_find_function_address(struct pevent *pevent, unsigned long long addr) -{ - struct func_map *map; - - map = find_func(pevent, addr); - if (!map) - return 0; - - return map->addr; -} - -/** - * pevent_register_function - register a function with a given address - * @pevent: handle for the pevent - * @function: the function name to register - * @addr: the address the function starts at - * @mod: the kernel module the function may be in (NULL for none) - * - * This registers a function name with an address and module. - * The @func passed in is duplicated. - */ -int pevent_register_function(struct pevent *pevent, char *func, - unsigned long long addr, char *mod) -{ - struct func_list *item = malloc(sizeof(*item)); - - if (!item) - return -1; - - item->next = pevent->funclist; - item->func = strdup(func); - if (!item->func) - goto out_free; - - if (mod) { - item->mod = strdup(mod); - if (!item->mod) - goto out_free_func; - } else - item->mod = NULL; - item->addr = addr; - - pevent->funclist = item; - pevent->func_count++; - - return 0; - -out_free_func: - free(item->func); - item->func = NULL; -out_free: - free(item); - errno = ENOMEM; - return -1; -} - -/** - * pevent_print_funcs - print out the stored functions - * @pevent: handle for the pevent - * - * This prints out the stored functions. - */ -void pevent_print_funcs(struct pevent *pevent) -{ - int i; - - if (!pevent->func_map) - func_map_init(pevent); - - for (i = 0; i < (int)pevent->func_count; i++) { - printf("%016llx %s", - pevent->func_map[i].addr, - pevent->func_map[i].func); - if (pevent->func_map[i].mod) - printf(" [%s]\n", pevent->func_map[i].mod); - else - printf("\n"); - } -} - -struct printk_map { - unsigned long long addr; - char *printk; -}; - -struct printk_list { - struct printk_list *next; - unsigned long long addr; - char *printk; -}; - -static int printk_cmp(const void *a, const void *b) -{ - const struct printk_map *pa = a; - const struct printk_map *pb = b; - - if (pa->addr < pb->addr) - return -1; - if (pa->addr > pb->addr) - return 1; - - return 0; -} - -static int printk_map_init(struct pevent *pevent) -{ - struct printk_list *printklist; - struct printk_list *item; - struct printk_map *printk_map; - int i; - - printk_map = malloc(sizeof(*printk_map) * (pevent->printk_count + 1)); - if (!printk_map) - return -1; - - printklist = pevent->printklist; - - i = 0; - while (printklist) { - printk_map[i].printk = printklist->printk; - printk_map[i].addr = printklist->addr; - i++; - item = printklist; - printklist = printklist->next; - free(item); - } - - qsort(printk_map, pevent->printk_count, sizeof(*printk_map), printk_cmp); - - pevent->printk_map = printk_map; - pevent->printklist = NULL; - - return 0; -} - -static struct printk_map * -find_printk(struct pevent *pevent, unsigned long long addr) -{ - struct printk_map *printk; - struct printk_map key; - - if (!pevent->printk_map && printk_map_init(pevent)) - return NULL; - - key.addr = addr; - - printk = bsearch(&key, pevent->printk_map, pevent->printk_count, - sizeof(*pevent->printk_map), printk_cmp); - - return printk; -} - -/** - * pevent_register_print_string - register a string by its address - * @pevent: handle for the pevent - * @fmt: the string format to register - * @addr: the address the string was located at - * - * This registers a string by the address it was stored in the kernel. - * The @fmt passed in is duplicated. - */ -int pevent_register_print_string(struct pevent *pevent, const char *fmt, - unsigned long long addr) -{ - struct printk_list *item = malloc(sizeof(*item)); - char *p; - - if (!item) - return -1; - - item->next = pevent->printklist; - item->addr = addr; - - /* Strip off quotes and '\n' from the end */ - if (fmt[0] == '"') - fmt++; - item->printk = strdup(fmt); - if (!item->printk) - goto out_free; - - p = item->printk + strlen(item->printk) - 1; - if (*p == '"') - *p = 0; - - p -= 2; - if (strcmp(p, "\\n") == 0) - *p = 0; - - pevent->printklist = item; - pevent->printk_count++; - - return 0; - -out_free: - free(item); - errno = ENOMEM; - return -1; -} - -/** - * pevent_print_printk - print out the stored strings - * @pevent: handle for the pevent - * - * This prints the string formats that were stored. - */ -void pevent_print_printk(struct pevent *pevent) -{ - int i; - - if (!pevent->printk_map) - printk_map_init(pevent); - - for (i = 0; i < (int)pevent->printk_count; i++) { - printf("%016llx %s\n", - pevent->printk_map[i].addr, - pevent->printk_map[i].printk); - } -} - -static struct event_format *alloc_event(void) -{ - return calloc(1, sizeof(struct event_format)); -} - -static int add_event(struct pevent *pevent, struct event_format *event) -{ - int i; - struct event_format **events = realloc(pevent->events, sizeof(event) * - (pevent->nr_events + 1)); - if (!events) - return -1; - - pevent->events = events; - - for (i = 0; i < pevent->nr_events; i++) { - if (pevent->events[i]->id > event->id) - break; - } - if (i < pevent->nr_events) - memmove(&pevent->events[i + 1], - &pevent->events[i], - sizeof(event) * (pevent->nr_events - i)); - - pevent->events[i] = event; - pevent->nr_events++; - - event->pevent = pevent; - - return 0; -} - -static int event_item_type(enum event_type type) -{ - switch (type) { - case EVENT_ITEM ... EVENT_SQUOTE: - return 1; - case EVENT_ERROR ... EVENT_DELIM: - default: - return 0; - } -} - -static void free_flag_sym(struct print_flag_sym *fsym) -{ - struct print_flag_sym *next; - - while (fsym) { - next = fsym->next; - free(fsym->value); - free(fsym->str); - free(fsym); - fsym = next; - } -} - -static void free_arg(struct print_arg *arg) -{ - struct print_arg *farg; - - if (!arg) - return; - - switch (arg->type) { - case PRINT_ATOM: - free(arg->atom.atom); - break; - case PRINT_FIELD: - free(arg->field.name); - break; - case PRINT_FLAGS: - free_arg(arg->flags.field); - free(arg->flags.delim); - free_flag_sym(arg->flags.flags); - break; - case PRINT_SYMBOL: - free_arg(arg->symbol.field); - free_flag_sym(arg->symbol.symbols); - break; - case PRINT_HEX: - case PRINT_HEX_STR: - free_arg(arg->hex.field); - free_arg(arg->hex.size); - break; - case PRINT_INT_ARRAY: - free_arg(arg->int_array.field); - free_arg(arg->int_array.count); - free_arg(arg->int_array.el_size); - break; - case PRINT_TYPE: - free(arg->typecast.type); - free_arg(arg->typecast.item); - break; - case PRINT_STRING: - case PRINT_BSTRING: - free(arg->string.string); - break; - case PRINT_BITMASK: - free(arg->bitmask.bitmask); - break; - case PRINT_DYNAMIC_ARRAY: - case PRINT_DYNAMIC_ARRAY_LEN: - free(arg->dynarray.index); - break; - case PRINT_OP: - free(arg->op.op); - free_arg(arg->op.left); - free_arg(arg->op.right); - break; - case PRINT_FUNC: - while (arg->func.args) { - farg = arg->func.args; - arg->func.args = farg->next; - free_arg(farg); - } - break; - - case PRINT_NULL: - default: - break; - } - - free(arg); -} - -static enum event_type get_type(int ch) -{ - if (ch == '\n') - return EVENT_NEWLINE; - if (isspace(ch)) - return EVENT_SPACE; - if (isalnum(ch) || ch == '_') - return EVENT_ITEM; - if (ch == '\'') - return EVENT_SQUOTE; - if (ch == '"') - return EVENT_DQUOTE; - if (!isprint(ch)) - return EVENT_NONE; - if (ch == '(' || ch == ')' || ch == ',') - return EVENT_DELIM; - - return EVENT_OP; -} - -static int __read_char(void) -{ - if (input_buf_ptr >= input_buf_siz) - return -1; - - return input_buf[input_buf_ptr++]; -} - -static int __peek_char(void) -{ - if (input_buf_ptr >= input_buf_siz) - return -1; - - return input_buf[input_buf_ptr]; -} - -/** - * pevent_peek_char - peek at the next character that will be read - * - * Returns the next character read, or -1 if end of buffer. - */ -int pevent_peek_char(void) -{ - return __peek_char(); -} - -static int extend_token(char **tok, char *buf, int size) -{ - char *newtok = realloc(*tok, size); - - if (!newtok) { - free(*tok); - *tok = NULL; - return -1; - } - - if (!*tok) - strcpy(newtok, buf); - else - strcat(newtok, buf); - *tok = newtok; - - return 0; -} - -static enum event_type force_token(const char *str, char **tok); - -static enum event_type __read_token(char **tok) -{ - char buf[BUFSIZ]; - int ch, last_ch, quote_ch, next_ch; - int i = 0; - int tok_size = 0; - enum event_type type; - - *tok = NULL; - - - ch = __read_char(); - if (ch < 0) - return EVENT_NONE; - - type = get_type(ch); - if (type == EVENT_NONE) - return type; - - buf[i++] = ch; - - switch (type) { - case EVENT_NEWLINE: - case EVENT_DELIM: - if (asprintf(tok, "%c", ch) < 0) - return EVENT_ERROR; - - return type; - - case EVENT_OP: - switch (ch) { - case '-': - next_ch = __peek_char(); - if (next_ch == '>') { - buf[i++] = __read_char(); - break; - } - /* fall through */ - case '+': - case '|': - case '&': - case '>': - case '<': - last_ch = ch; - ch = __peek_char(); - if (ch != last_ch) - goto test_equal; - buf[i++] = __read_char(); - switch (last_ch) { - case '>': - case '<': - goto test_equal; - default: - break; - } - break; - case '!': - case '=': - goto test_equal; - default: /* what should we do instead? */ - break; - } - buf[i] = 0; - *tok = strdup(buf); - return type; - - test_equal: - ch = __peek_char(); - if (ch == '=') - buf[i++] = __read_char(); - goto out; - - case EVENT_DQUOTE: - case EVENT_SQUOTE: - /* don't keep quotes */ - i--; - quote_ch = ch; - last_ch = 0; - concat: - do { - if (i == (BUFSIZ - 1)) { - buf[i] = 0; - tok_size += BUFSIZ; - - if (extend_token(tok, buf, tok_size) < 0) - return EVENT_NONE; - i = 0; - } - last_ch = ch; - ch = __read_char(); - buf[i++] = ch; - /* the '\' '\' will cancel itself */ - if (ch == '\\' && last_ch == '\\') - last_ch = 0; - } while (ch != quote_ch || last_ch == '\\'); - /* remove the last quote */ - i--; - - /* - * For strings (double quotes) check the next token. - * If it is another string, concatinate the two. - */ - if (type == EVENT_DQUOTE) { - unsigned long long save_input_buf_ptr = input_buf_ptr; - - do { - ch = __read_char(); - } while (isspace(ch)); - if (ch == '"') - goto concat; - input_buf_ptr = save_input_buf_ptr; - } - - goto out; - - case EVENT_ERROR ... EVENT_SPACE: - case EVENT_ITEM: - default: - break; - } - - while (get_type(__peek_char()) == type) { - if (i == (BUFSIZ - 1)) { - buf[i] = 0; - tok_size += BUFSIZ; - - if (extend_token(tok, buf, tok_size) < 0) - return EVENT_NONE; - i = 0; - } - ch = __read_char(); - buf[i++] = ch; - } - - out: - buf[i] = 0; - if (extend_token(tok, buf, tok_size + i + 1) < 0) - return EVENT_NONE; - - if (type == EVENT_ITEM) { - /* - * Older versions of the kernel has a bug that - * creates invalid symbols and will break the mac80211 - * parsing. This is a work around to that bug. - * - * See Linux kernel commit: - * 811cb50baf63461ce0bdb234927046131fc7fa8b - */ - if (strcmp(*tok, "LOCAL_PR_FMT") == 0) { - free(*tok); - *tok = NULL; - return force_token("\"\%s\" ", tok); - } else if (strcmp(*tok, "STA_PR_FMT") == 0) { - free(*tok); - *tok = NULL; - return force_token("\" sta:%pM\" ", tok); - } else if (strcmp(*tok, "VIF_PR_FMT") == 0) { - free(*tok); - *tok = NULL; - return force_token("\" vif:%p(%d)\" ", tok); - } - } - - return type; -} - -static enum event_type force_token(const char *str, char **tok) -{ - const char *save_input_buf; - unsigned long long save_input_buf_ptr; - unsigned long long save_input_buf_siz; - enum event_type type; - - /* save off the current input pointers */ - save_input_buf = input_buf; - save_input_buf_ptr = input_buf_ptr; - save_input_buf_siz = input_buf_siz; - - init_input_buf(str, strlen(str)); - - type = __read_token(tok); - - /* reset back to original token */ - input_buf = save_input_buf; - input_buf_ptr = save_input_buf_ptr; - input_buf_siz = save_input_buf_siz; - - return type; -} - -static void free_token(char *tok) -{ - if (tok) - free(tok); -} - -static enum event_type read_token(char **tok) -{ - enum event_type type; - - for (;;) { - type = __read_token(tok); - if (type != EVENT_SPACE) - return type; - - free_token(*tok); - } - - /* not reached */ - *tok = NULL; - return EVENT_NONE; -} - -/** - * pevent_read_token - access to utilites to use the pevent parser - * @tok: The token to return - * - * This will parse tokens from the string given by - * pevent_init_data(). - * - * Returns the token type. - */ -enum event_type pevent_read_token(char **tok) -{ - return read_token(tok); -} - -/** - * pevent_free_token - free a token returned by pevent_read_token - * @token: the token to free - */ -void pevent_free_token(char *token) -{ - free_token(token); -} - -/* no newline */ -static enum event_type read_token_item(char **tok) -{ - enum event_type type; - - for (;;) { - type = __read_token(tok); - if (type != EVENT_SPACE && type != EVENT_NEWLINE) - return type; - free_token(*tok); - *tok = NULL; - } - - /* not reached */ - *tok = NULL; - return EVENT_NONE; -} - -static int test_type(enum event_type type, enum event_type expect) -{ - if (type != expect) { - do_warning("Error: expected type %d but read %d", - expect, type); - return -1; - } - return 0; -} - -static int test_type_token(enum event_type type, const char *token, - enum event_type expect, const char *expect_tok) -{ - if (type != expect) { - do_warning("Error: expected type %d but read %d", - expect, type); - return -1; - } - - if (strcmp(token, expect_tok) != 0) { - do_warning("Error: expected '%s' but read '%s'", - expect_tok, token); - return -1; - } - return 0; -} - -static int __read_expect_type(enum event_type expect, char **tok, int newline_ok) -{ - enum event_type type; - - if (newline_ok) - type = read_token(tok); - else - type = read_token_item(tok); - return test_type(type, expect); -} - -static int read_expect_type(enum event_type expect, char **tok) -{ - return __read_expect_type(expect, tok, 1); -} - -static int __read_expected(enum event_type expect, const char *str, - int newline_ok) -{ - enum event_type type; - char *token; - int ret; - - if (newline_ok) - type = read_token(&token); - else - type = read_token_item(&token); - - ret = test_type_token(type, token, expect, str); - - free_token(token); - - return ret; -} - -static int read_expected(enum event_type expect, const char *str) -{ - return __read_expected(expect, str, 1); -} - -static int read_expected_item(enum event_type expect, const char *str) -{ - return __read_expected(expect, str, 0); -} - -static char *event_read_name(void) -{ - char *token; - - if (read_expected(EVENT_ITEM, "name") < 0) - return NULL; - - if (read_expected(EVENT_OP, ":") < 0) - return NULL; - - if (read_expect_type(EVENT_ITEM, &token) < 0) - goto fail; - - return token; - - fail: - free_token(token); - return NULL; -} - -static int event_read_id(void) -{ - char *token; - int id; - - if (read_expected_item(EVENT_ITEM, "ID") < 0) - return -1; - - if (read_expected(EVENT_OP, ":") < 0) - return -1; - - if (read_expect_type(EVENT_ITEM, &token) < 0) - goto fail; - - id = strtoul(token, NULL, 0); - free_token(token); - return id; - - fail: - free_token(token); - return -1; -} - -static int field_is_string(struct format_field *field) -{ - if ((field->flags & FIELD_IS_ARRAY) && - (strstr(field->type, "char") || strstr(field->type, "u8") || - strstr(field->type, "s8"))) - return 1; - - return 0; -} - -static int field_is_dynamic(struct format_field *field) -{ - if (strncmp(field->type, "__data_loc", 10) == 0) - return 1; - - return 0; -} - -static int field_is_long(struct format_field *field) -{ - /* includes long long */ - if (strstr(field->type, "long")) - return 1; - - return 0; -} - -static unsigned int type_size(const char *name) -{ - /* This covers all FIELD_IS_STRING types. */ - static struct { - const char *type; - unsigned int size; - } table[] = { - { "u8", 1 }, - { "u16", 2 }, - { "u32", 4 }, - { "u64", 8 }, - { "s8", 1 }, - { "s16", 2 }, - { "s32", 4 }, - { "s64", 8 }, - { "char", 1 }, - { }, - }; - int i; - - for (i = 0; table[i].type; i++) { - if (!strcmp(table[i].type, name)) - return table[i].size; - } - - return 0; -} - -static int event_read_fields(struct event_format *event, struct format_field **fields) -{ - struct format_field *field = NULL; - enum event_type type; - char *token; - char *last_token; - int count = 0; - - do { - unsigned int size_dynamic = 0; - - type = read_token(&token); - if (type == EVENT_NEWLINE) { - free_token(token); - return count; - } - - count++; - - if (test_type_token(type, token, EVENT_ITEM, "field")) - goto fail; - free_token(token); - - type = read_token(&token); - /* - * The ftrace fields may still use the "special" name. - * Just ignore it. - */ - if (event->flags & EVENT_FL_ISFTRACE && - type == EVENT_ITEM && strcmp(token, "special") == 0) { - free_token(token); - type = read_token(&token); - } - - if (test_type_token(type, token, EVENT_OP, ":") < 0) - goto fail; - - free_token(token); - if (read_expect_type(EVENT_ITEM, &token) < 0) - goto fail; - - last_token = token; - - field = calloc(1, sizeof(*field)); - if (!field) - goto fail; - - field->event = event; - - /* read the rest of the type */ - for (;;) { - type = read_token(&token); - if (type == EVENT_ITEM || - (type == EVENT_OP && strcmp(token, "*") == 0) || - /* - * Some of the ftrace fields are broken and have - * an illegal "." in them. - */ - (event->flags & EVENT_FL_ISFTRACE && - type == EVENT_OP && strcmp(token, ".") == 0)) { - - if (strcmp(token, "*") == 0) - field->flags |= FIELD_IS_POINTER; - - if (field->type) { - char *new_type; - new_type = realloc(field->type, - strlen(field->type) + - strlen(last_token) + 2); - if (!new_type) { - free(last_token); - goto fail; - } - field->type = new_type; - strcat(field->type, " "); - strcat(field->type, last_token); - free(last_token); - } else - field->type = last_token; - last_token = token; - continue; - } - - break; - } - - if (!field->type) { - do_warning_event(event, "%s: no type found", __func__); - goto fail; - } - field->name = field->alias = last_token; - - if (test_type(type, EVENT_OP)) - goto fail; - - if (strcmp(token, "[") == 0) { - enum event_type last_type = type; - char *brackets = token; - char *new_brackets; - int len; - - field->flags |= FIELD_IS_ARRAY; - - type = read_token(&token); - - if (type == EVENT_ITEM) - field->arraylen = strtoul(token, NULL, 0); - else - field->arraylen = 0; - - while (strcmp(token, "]") != 0) { - if (last_type == EVENT_ITEM && - type == EVENT_ITEM) - len = 2; - else - len = 1; - last_type = type; - - new_brackets = realloc(brackets, - strlen(brackets) + - strlen(token) + len); - if (!new_brackets) { - free(brackets); - goto fail; - } - brackets = new_brackets; - if (len == 2) - strcat(brackets, " "); - strcat(brackets, token); - /* We only care about the last token */ - field->arraylen = strtoul(token, NULL, 0); - free_token(token); - type = read_token(&token); - if (type == EVENT_NONE) { - do_warning_event(event, "failed to find token"); - goto fail; - } - } - - free_token(token); - - new_brackets = realloc(brackets, strlen(brackets) + 2); - if (!new_brackets) { - free(brackets); - goto fail; - } - brackets = new_brackets; - strcat(brackets, "]"); - - /* add brackets to type */ - - type = read_token(&token); - /* - * If the next token is not an OP, then it is of - * the format: type [] item; - */ - if (type == EVENT_ITEM) { - char *new_type; - new_type = realloc(field->type, - strlen(field->type) + - strlen(field->name) + - strlen(brackets) + 2); - if (!new_type) { - free(brackets); - goto fail; - } - field->type = new_type; - strcat(field->type, " "); - strcat(field->type, field->name); - size_dynamic = type_size(field->name); - free_token(field->name); - strcat(field->type, brackets); - field->name = field->alias = token; - type = read_token(&token); - } else { - char *new_type; - new_type = realloc(field->type, - strlen(field->type) + - strlen(brackets) + 1); - if (!new_type) { - free(brackets); - goto fail; - } - field->type = new_type; - strcat(field->type, brackets); - } - free(brackets); - } - - if (field_is_string(field)) - field->flags |= FIELD_IS_STRING; - if (field_is_dynamic(field)) - field->flags |= FIELD_IS_DYNAMIC; - if (field_is_long(field)) - field->flags |= FIELD_IS_LONG; - - if (test_type_token(type, token, EVENT_OP, ";")) - goto fail; - free_token(token); - - if (read_expected(EVENT_ITEM, "offset") < 0) - goto fail_expect; - - if (read_expected(EVENT_OP, ":") < 0) - goto fail_expect; - - if (read_expect_type(EVENT_ITEM, &token)) - goto fail; - field->offset = strtoul(token, NULL, 0); - free_token(token); - - if (read_expected(EVENT_OP, ";") < 0) - goto fail_expect; - - if (read_expected(EVENT_ITEM, "size") < 0) - goto fail_expect; - - if (read_expected(EVENT_OP, ":") < 0) - goto fail_expect; - - if (read_expect_type(EVENT_ITEM, &token)) - goto fail; - field->size = strtoul(token, NULL, 0); - free_token(token); - - if (read_expected(EVENT_OP, ";") < 0) - goto fail_expect; - - type = read_token(&token); - if (type != EVENT_NEWLINE) { - /* newer versions of the kernel have a "signed" type */ - if (test_type_token(type, token, EVENT_ITEM, "signed")) - goto fail; - - free_token(token); - - if (read_expected(EVENT_OP, ":") < 0) - goto fail_expect; - - if (read_expect_type(EVENT_ITEM, &token)) - goto fail; - - if (strtoul(token, NULL, 0)) - field->flags |= FIELD_IS_SIGNED; - - free_token(token); - if (read_expected(EVENT_OP, ";") < 0) - goto fail_expect; - - if (read_expect_type(EVENT_NEWLINE, &token)) - goto fail; - } - - free_token(token); - - if (field->flags & FIELD_IS_ARRAY) { - if (field->arraylen) - field->elementsize = field->size / field->arraylen; - else if (field->flags & FIELD_IS_DYNAMIC) - field->elementsize = size_dynamic; - else if (field->flags & FIELD_IS_STRING) - field->elementsize = 1; - else if (field->flags & FIELD_IS_LONG) - field->elementsize = event->pevent ? - event->pevent->long_size : - sizeof(long); - } else - field->elementsize = field->size; - - *fields = field; - fields = &field->next; - - } while (1); - - return 0; - -fail: - free_token(token); -fail_expect: - if (field) { - free(field->type); - free(field->name); - free(field); - } - return -1; -} - -static int event_read_format(struct event_format *event) -{ - char *token; - int ret; - - if (read_expected_item(EVENT_ITEM, "format") < 0) - return -1; - - if (read_expected(EVENT_OP, ":") < 0) - return -1; - - if (read_expect_type(EVENT_NEWLINE, &token)) - goto fail; - free_token(token); - - ret = event_read_fields(event, &event->format.common_fields); - if (ret < 0) - return ret; - event->format.nr_common = ret; - - ret = event_read_fields(event, &event->format.fields); - if (ret < 0) - return ret; - event->format.nr_fields = ret; - - return 0; - - fail: - free_token(token); - return -1; -} - -static enum event_type -process_arg_token(struct event_format *event, struct print_arg *arg, - char **tok, enum event_type type); - -static enum event_type -process_arg(struct event_format *event, struct print_arg *arg, char **tok) -{ - enum event_type type; - char *token; - - type = read_token(&token); - *tok = token; - - return process_arg_token(event, arg, tok, type); -} - -static enum event_type -process_op(struct event_format *event, struct print_arg *arg, char **tok); - -/* - * For __print_symbolic() and __print_flags, we need to completely - * evaluate the first argument, which defines what to print next. - */ -static enum event_type -process_field_arg(struct event_format *event, struct print_arg *arg, char **tok) -{ - enum event_type type; - - type = process_arg(event, arg, tok); - - while (type == EVENT_OP) { - type = process_op(event, arg, tok); - } - - return type; -} - -static enum event_type -process_cond(struct event_format *event, struct print_arg *top, char **tok) -{ - struct print_arg *arg, *left, *right; - enum event_type type; - char *token = NULL; - - arg = alloc_arg(); - left = alloc_arg(); - right = alloc_arg(); - - if (!arg || !left || !right) { - do_warning_event(event, "%s: not enough memory!", __func__); - /* arg will be freed at out_free */ - free_arg(left); - free_arg(right); - goto out_free; - } - - arg->type = PRINT_OP; - arg->op.left = left; - arg->op.right = right; - - *tok = NULL; - type = process_arg(event, left, &token); - - again: - if (type == EVENT_ERROR) - goto out_free; - - /* Handle other operations in the arguments */ - if (type == EVENT_OP && strcmp(token, ":") != 0) { - type = process_op(event, left, &token); - goto again; - } - - if (test_type_token(type, token, EVENT_OP, ":")) - goto out_free; - - arg->op.op = token; - - type = process_arg(event, right, &token); - - top->op.right = arg; - - *tok = token; - return type; - -out_free: - /* Top may point to itself */ - top->op.right = NULL; - free_token(token); - free_arg(arg); - return EVENT_ERROR; -} - -static enum event_type -process_array(struct event_format *event, struct print_arg *top, char **tok) -{ - struct print_arg *arg; - enum event_type type; - char *token = NULL; - - arg = alloc_arg(); - if (!arg) { - do_warning_event(event, "%s: not enough memory!", __func__); - /* '*tok' is set to top->op.op. No need to free. */ - *tok = NULL; - return EVENT_ERROR; - } - - *tok = NULL; - type = process_arg(event, arg, &token); - if (test_type_token(type, token, EVENT_OP, "]")) - goto out_free; - - top->op.right = arg; - - free_token(token); - type = read_token_item(&token); - *tok = token; - - return type; - -out_free: - free_token(token); - free_arg(arg); - return EVENT_ERROR; -} - -static int get_op_prio(char *op) -{ - if (!op[1]) { - switch (op[0]) { - case '~': - case '!': - return 4; - case '*': - case '/': - case '%': - return 6; - case '+': - case '-': - return 7; - /* '>>' and '<<' are 8 */ - case '<': - case '>': - return 9; - /* '==' and '!=' are 10 */ - case '&': - return 11; - case '^': - return 12; - case '|': - return 13; - case '?': - return 16; - default: - do_warning("unknown op '%c'", op[0]); - return -1; - } - } else { - if (strcmp(op, "++") == 0 || - strcmp(op, "--") == 0) { - return 3; - } else if (strcmp(op, ">>") == 0 || - strcmp(op, "<<") == 0) { - return 8; - } else if (strcmp(op, ">=") == 0 || - strcmp(op, "<=") == 0) { - return 9; - } else if (strcmp(op, "==") == 0 || - strcmp(op, "!=") == 0) { - return 10; - } else if (strcmp(op, "&&") == 0) { - return 14; - } else if (strcmp(op, "||") == 0) { - return 15; - } else { - do_warning("unknown op '%s'", op); - return -1; - } - } -} - -static int set_op_prio(struct print_arg *arg) -{ - - /* single ops are the greatest */ - if (!arg->op.left || arg->op.left->type == PRINT_NULL) - arg->op.prio = 0; - else - arg->op.prio = get_op_prio(arg->op.op); - - return arg->op.prio; -} - -/* Note, *tok does not get freed, but will most likely be saved */ -static enum event_type -process_op(struct event_format *event, struct print_arg *arg, char **tok) -{ - struct print_arg *left, *right = NULL; - enum event_type type; - char *token; - - /* the op is passed in via tok */ - token = *tok; - - if (arg->type == PRINT_OP && !arg->op.left) { - /* handle single op */ - if (token[1]) { - do_warning_event(event, "bad op token %s", token); - goto out_free; - } - switch (token[0]) { - case '~': - case '!': - case '+': - case '-': - break; - default: - do_warning_event(event, "bad op token %s", token); - goto out_free; - - } - - /* make an empty left */ - left = alloc_arg(); - if (!left) - goto out_warn_free; - - left->type = PRINT_NULL; - arg->op.left = left; - - right = alloc_arg(); - if (!right) - goto out_warn_free; - - arg->op.right = right; - - /* do not free the token, it belongs to an op */ - *tok = NULL; - type = process_arg(event, right, tok); - - } else if (strcmp(token, "?") == 0) { - - left = alloc_arg(); - if (!left) - goto out_warn_free; - - /* copy the top arg to the left */ - *left = *arg; - - arg->type = PRINT_OP; - arg->op.op = token; - arg->op.left = left; - arg->op.prio = 0; - - /* it will set arg->op.right */ - type = process_cond(event, arg, tok); - - } else if (strcmp(token, ">>") == 0 || - strcmp(token, "<<") == 0 || - strcmp(token, "&") == 0 || - strcmp(token, "|") == 0 || - strcmp(token, "&&") == 0 || - strcmp(token, "||") == 0 || - strcmp(token, "-") == 0 || - strcmp(token, "+") == 0 || - strcmp(token, "*") == 0 || - strcmp(token, "^") == 0 || - strcmp(token, "/") == 0 || - strcmp(token, "%") == 0 || - strcmp(token, "<") == 0 || - strcmp(token, ">") == 0 || - strcmp(token, "<=") == 0 || - strcmp(token, ">=") == 0 || - strcmp(token, "==") == 0 || - strcmp(token, "!=") == 0) { - - left = alloc_arg(); - if (!left) - goto out_warn_free; - - /* copy the top arg to the left */ - *left = *arg; - - arg->type = PRINT_OP; - arg->op.op = token; - arg->op.left = left; - arg->op.right = NULL; - - if (set_op_prio(arg) == -1) { - event->flags |= EVENT_FL_FAILED; - /* arg->op.op (= token) will be freed at out_free */ - arg->op.op = NULL; - goto out_free; - } - - type = read_token_item(&token); - *tok = token; - - /* could just be a type pointer */ - if ((strcmp(arg->op.op, "*") == 0) && - type == EVENT_DELIM && (strcmp(token, ")") == 0)) { - char *new_atom; - - if (left->type != PRINT_ATOM) { - do_warning_event(event, "bad pointer type"); - goto out_free; - } - new_atom = realloc(left->atom.atom, - strlen(left->atom.atom) + 3); - if (!new_atom) - goto out_warn_free; - - left->atom.atom = new_atom; - strcat(left->atom.atom, " *"); - free(arg->op.op); - *arg = *left; - free(left); - - return type; - } - - right = alloc_arg(); - if (!right) - goto out_warn_free; - - type = process_arg_token(event, right, tok, type); - if (type == EVENT_ERROR) { - free_arg(right); - /* token was freed in process_arg_token() via *tok */ - token = NULL; - goto out_free; - } - - if (right->type == PRINT_OP && - get_op_prio(arg->op.op) < get_op_prio(right->op.op)) { - struct print_arg tmp; - - /* rotate ops according to the priority */ - arg->op.right = right->op.left; - - tmp = *arg; - *arg = *right; - *right = tmp; - - arg->op.left = right; - } else { - arg->op.right = right; - } - - } else if (strcmp(token, "[") == 0) { - - left = alloc_arg(); - if (!left) - goto out_warn_free; - - *left = *arg; - - arg->type = PRINT_OP; - arg->op.op = token; - arg->op.left = left; - - arg->op.prio = 0; - - /* it will set arg->op.right */ - type = process_array(event, arg, tok); - - } else { - do_warning_event(event, "unknown op '%s'", token); - event->flags |= EVENT_FL_FAILED; - /* the arg is now the left side */ - goto out_free; - } - - if (type == EVENT_OP && strcmp(*tok, ":") != 0) { - int prio; - - /* higher prios need to be closer to the root */ - prio = get_op_prio(*tok); - - if (prio > arg->op.prio) - return process_op(event, arg, tok); - - return process_op(event, right, tok); - } - - return type; - -out_warn_free: - do_warning_event(event, "%s: not enough memory!", __func__); -out_free: - free_token(token); - *tok = NULL; - return EVENT_ERROR; -} - -static enum event_type -process_entry(struct event_format *event __maybe_unused, struct print_arg *arg, - char **tok) -{ - enum event_type type; - char *field; - char *token; - - if (read_expected(EVENT_OP, "->") < 0) - goto out_err; - - if (read_expect_type(EVENT_ITEM, &token) < 0) - goto out_free; - field = token; - - arg->type = PRINT_FIELD; - arg->field.name = field; - - if (is_flag_field) { - arg->field.field = pevent_find_any_field(event, arg->field.name); - arg->field.field->flags |= FIELD_IS_FLAG; - is_flag_field = 0; - } else if (is_symbolic_field) { - arg->field.field = pevent_find_any_field(event, arg->field.name); - arg->field.field->flags |= FIELD_IS_SYMBOLIC; - is_symbolic_field = 0; - } - - type = read_token(&token); - *tok = token; - - return type; - - out_free: - free_token(token); - out_err: - *tok = NULL; - return EVENT_ERROR; -} - -static int alloc_and_process_delim(struct event_format *event, char *next_token, - struct print_arg **print_arg) -{ - struct print_arg *field; - enum event_type type; - char *token; - int ret = 0; - - field = alloc_arg(); - if (!field) { - do_warning_event(event, "%s: not enough memory!", __func__); - errno = ENOMEM; - return -1; - } - - type = process_arg(event, field, &token); - - if (test_type_token(type, token, EVENT_DELIM, next_token)) { - errno = EINVAL; - ret = -1; - free_arg(field); - goto out_free_token; - } - - *print_arg = field; - -out_free_token: - free_token(token); - - return ret; -} - -static char *arg_eval (struct print_arg *arg); - -static unsigned long long -eval_type_str(unsigned long long val, const char *type, int pointer) -{ - int sign = 0; - char *ref; - int len; - - len = strlen(type); - - if (pointer) { - - if (type[len-1] != '*') { - do_warning("pointer expected with non pointer type"); - return val; - } - - ref = malloc(len); - if (!ref) { - do_warning("%s: not enough memory!", __func__); - return val; - } - memcpy(ref, type, len); - - /* chop off the " *" */ - ref[len - 2] = 0; - - val = eval_type_str(val, ref, 0); - free(ref); - return val; - } - - /* check if this is a pointer */ - if (type[len - 1] == '*') - return val; - - /* Try to figure out the arg size*/ - if (strncmp(type, "struct", 6) == 0) - /* all bets off */ - return val; - - if (strcmp(type, "u8") == 0) - return val & 0xff; - - if (strcmp(type, "u16") == 0) - return val & 0xffff; - - if (strcmp(type, "u32") == 0) - return val & 0xffffffff; - - if (strcmp(type, "u64") == 0 || - strcmp(type, "s64")) - return val; - - if (strcmp(type, "s8") == 0) - return (unsigned long long)(char)val & 0xff; - - if (strcmp(type, "s16") == 0) - return (unsigned long long)(short)val & 0xffff; - - if (strcmp(type, "s32") == 0) - return (unsigned long long)(int)val & 0xffffffff; - - if (strncmp(type, "unsigned ", 9) == 0) { - sign = 0; - type += 9; - } - - if (strcmp(type, "char") == 0) { - if (sign) - return (unsigned long long)(char)val & 0xff; - else - return val & 0xff; - } - - if (strcmp(type, "short") == 0) { - if (sign) - return (unsigned long long)(short)val & 0xffff; - else - return val & 0xffff; - } - - if (strcmp(type, "int") == 0) { - if (sign) - return (unsigned long long)(int)val & 0xffffffff; - else - return val & 0xffffffff; - } - - return val; -} - -/* - * Try to figure out the type. - */ -static unsigned long long -eval_type(unsigned long long val, struct print_arg *arg, int pointer) -{ - if (arg->type != PRINT_TYPE) { - do_warning("expected type argument"); - return 0; - } - - return eval_type_str(val, arg->typecast.type, pointer); -} - -static int arg_num_eval(struct print_arg *arg, long long *val) -{ - long long left, right; - int ret = 1; - - switch (arg->type) { - case PRINT_ATOM: - *val = strtoll(arg->atom.atom, NULL, 0); - break; - case PRINT_TYPE: - ret = arg_num_eval(arg->typecast.item, val); - if (!ret) - break; - *val = eval_type(*val, arg, 0); - break; - case PRINT_OP: - switch (arg->op.op[0]) { - case '|': - ret = arg_num_eval(arg->op.left, &left); - if (!ret) - break; - ret = arg_num_eval(arg->op.right, &right); - if (!ret) - break; - if (arg->op.op[1]) - *val = left || right; - else - *val = left | right; - break; - case '&': - ret = arg_num_eval(arg->op.left, &left); - if (!ret) - break; - ret = arg_num_eval(arg->op.right, &right); - if (!ret) - break; - if (arg->op.op[1]) - *val = left && right; - else - *val = left & right; - break; - case '<': - ret = arg_num_eval(arg->op.left, &left); - if (!ret) - break; - ret = arg_num_eval(arg->op.right, &right); - if (!ret) - break; - switch (arg->op.op[1]) { - case 0: - *val = left < right; - break; - case '<': - *val = left << right; - break; - case '=': - *val = left <= right; - break; - default: - do_warning("unknown op '%s'", arg->op.op); - ret = 0; - } - break; - case '>': - ret = arg_num_eval(arg->op.left, &left); - if (!ret) - break; - ret = arg_num_eval(arg->op.right, &right); - if (!ret) - break; - switch (arg->op.op[1]) { - case 0: - *val = left > right; - break; - case '>': - *val = left >> right; - break; - case '=': - *val = left >= right; - break; - default: - do_warning("unknown op '%s'", arg->op.op); - ret = 0; - } - break; - case '=': - ret = arg_num_eval(arg->op.left, &left); - if (!ret) - break; - ret = arg_num_eval(arg->op.right, &right); - if (!ret) - break; - - if (arg->op.op[1] != '=') { - do_warning("unknown op '%s'", arg->op.op); - ret = 0; - } else - *val = left == right; - break; - case '!': - ret = arg_num_eval(arg->op.left, &left); - if (!ret) - break; - ret = arg_num_eval(arg->op.right, &right); - if (!ret) - break; - - switch (arg->op.op[1]) { - case '=': - *val = left != right; - break; - default: - do_warning("unknown op '%s'", arg->op.op); - ret = 0; - } - break; - case '-': - /* check for negative */ - if (arg->op.left->type == PRINT_NULL) - left = 0; - else - ret = arg_num_eval(arg->op.left, &left); - if (!ret) - break; - ret = arg_num_eval(arg->op.right, &right); - if (!ret) - break; - *val = left - right; - break; - case '+': - if (arg->op.left->type == PRINT_NULL) - left = 0; - else - ret = arg_num_eval(arg->op.left, &left); - if (!ret) - break; - ret = arg_num_eval(arg->op.right, &right); - if (!ret) - break; - *val = left + right; - break; - case '~': - ret = arg_num_eval(arg->op.right, &right); - if (!ret) - break; - *val = ~right; - break; - default: - do_warning("unknown op '%s'", arg->op.op); - ret = 0; - } - break; - - case PRINT_NULL: - case PRINT_FIELD ... PRINT_SYMBOL: - case PRINT_STRING: - case PRINT_BSTRING: - case PRINT_BITMASK: - default: - do_warning("invalid eval type %d", arg->type); - ret = 0; - - } - return ret; -} - -static char *arg_eval (struct print_arg *arg) -{ - long long val; - static char buf[20]; - - switch (arg->type) { - case PRINT_ATOM: - return arg->atom.atom; - case PRINT_TYPE: - return arg_eval(arg->typecast.item); - case PRINT_OP: - if (!arg_num_eval(arg, &val)) - break; - sprintf(buf, "%lld", val); - return buf; - - case PRINT_NULL: - case PRINT_FIELD ... PRINT_SYMBOL: - case PRINT_STRING: - case PRINT_BSTRING: - case PRINT_BITMASK: - default: - do_warning("invalid eval type %d", arg->type); - break; - } - - return NULL; -} - -static enum event_type -process_fields(struct event_format *event, struct print_flag_sym **list, char **tok) -{ - enum event_type type; - struct print_arg *arg = NULL; - struct print_flag_sym *field; - char *token = *tok; - char *value; - - do { - free_token(token); - type = read_token_item(&token); - if (test_type_token(type, token, EVENT_OP, "{")) - break; - - arg = alloc_arg(); - if (!arg) - goto out_free; - - free_token(token); - type = process_arg(event, arg, &token); - - if (type == EVENT_OP) - type = process_op(event, arg, &token); - - if (type == EVENT_ERROR) - goto out_free; - - if (test_type_token(type, token, EVENT_DELIM, ",")) - goto out_free; - - field = calloc(1, sizeof(*field)); - if (!field) - goto out_free; - - value = arg_eval(arg); - if (value == NULL) - goto out_free_field; - field->value = strdup(value); - if (field->value == NULL) - goto out_free_field; - - free_arg(arg); - arg = alloc_arg(); - if (!arg) - goto out_free; - - free_token(token); - type = process_arg(event, arg, &token); - if (test_type_token(type, token, EVENT_OP, "}")) - goto out_free_field; - - value = arg_eval(arg); - if (value == NULL) - goto out_free_field; - field->str = strdup(value); - if (field->str == NULL) - goto out_free_field; - free_arg(arg); - arg = NULL; - - *list = field; - list = &field->next; - - free_token(token); - type = read_token_item(&token); - } while (type == EVENT_DELIM && strcmp(token, ",") == 0); - - *tok = token; - return type; - -out_free_field: - free_flag_sym(field); -out_free: - free_arg(arg); - free_token(token); - *tok = NULL; - - return EVENT_ERROR; -} - -static enum event_type -process_flags(struct event_format *event, struct print_arg *arg, char **tok) -{ - struct print_arg *field; - enum event_type type; - char *token = NULL; - - memset(arg, 0, sizeof(*arg)); - arg->type = PRINT_FLAGS; - - field = alloc_arg(); - if (!field) { - do_warning_event(event, "%s: not enough memory!", __func__); - goto out_free; - } - - type = process_field_arg(event, field, &token); - - /* Handle operations in the first argument */ - while (type == EVENT_OP) - type = process_op(event, field, &token); - - if (test_type_token(type, token, EVENT_DELIM, ",")) - goto out_free_field; - free_token(token); - - arg->flags.field = field; - - type = read_token_item(&token); - if (event_item_type(type)) { - arg->flags.delim = token; - type = read_token_item(&token); - } - - if (test_type_token(type, token, EVENT_DELIM, ",")) - goto out_free; - - type = process_fields(event, &arg->flags.flags, &token); - if (test_type_token(type, token, EVENT_DELIM, ")")) - goto out_free; - - free_token(token); - type = read_token_item(tok); - return type; - -out_free_field: - free_arg(field); -out_free: - free_token(token); - *tok = NULL; - return EVENT_ERROR; -} - -static enum event_type -process_symbols(struct event_format *event, struct print_arg *arg, char **tok) -{ - struct print_arg *field; - enum event_type type; - char *token = NULL; - - memset(arg, 0, sizeof(*arg)); - arg->type = PRINT_SYMBOL; - - field = alloc_arg(); - if (!field) { - do_warning_event(event, "%s: not enough memory!", __func__); - goto out_free; - } - - type = process_field_arg(event, field, &token); - - if (test_type_token(type, token, EVENT_DELIM, ",")) - goto out_free_field; - - arg->symbol.field = field; - - type = process_fields(event, &arg->symbol.symbols, &token); - if (test_type_token(type, token, EVENT_DELIM, ")")) - goto out_free; - - free_token(token); - type = read_token_item(tok); - return type; - -out_free_field: - free_arg(field); -out_free: - free_token(token); - *tok = NULL; - return EVENT_ERROR; -} - -static enum event_type -process_hex_common(struct event_format *event, struct print_arg *arg, - char **tok, enum print_arg_type type) -{ - memset(arg, 0, sizeof(*arg)); - arg->type = type; - - if (alloc_and_process_delim(event, ",", &arg->hex.field)) - goto out; - - if (alloc_and_process_delim(event, ")", &arg->hex.size)) - goto free_field; - - return read_token_item(tok); - -free_field: - free_arg(arg->hex.field); - arg->hex.field = NULL; -out: - *tok = NULL; - return EVENT_ERROR; -} - -static enum event_type -process_hex(struct event_format *event, struct print_arg *arg, char **tok) -{ - return process_hex_common(event, arg, tok, PRINT_HEX); -} - -static enum event_type -process_hex_str(struct event_format *event, struct print_arg *arg, - char **tok) -{ - return process_hex_common(event, arg, tok, PRINT_HEX_STR); -} - -static enum event_type -process_int_array(struct event_format *event, struct print_arg *arg, char **tok) -{ - memset(arg, 0, sizeof(*arg)); - arg->type = PRINT_INT_ARRAY; - - if (alloc_and_process_delim(event, ",", &arg->int_array.field)) - goto out; - - if (alloc_and_process_delim(event, ",", &arg->int_array.count)) - goto free_field; - - if (alloc_and_process_delim(event, ")", &arg->int_array.el_size)) - goto free_size; - - return read_token_item(tok); - -free_size: - free_arg(arg->int_array.count); - arg->int_array.count = NULL; -free_field: - free_arg(arg->int_array.field); - arg->int_array.field = NULL; -out: - *tok = NULL; - return EVENT_ERROR; -} - -static enum event_type -process_dynamic_array(struct event_format *event, struct print_arg *arg, char **tok) -{ - struct format_field *field; - enum event_type type; - char *token; - - memset(arg, 0, sizeof(*arg)); - arg->type = PRINT_DYNAMIC_ARRAY; - - /* - * The item within the parenthesis is another field that holds - * the index into where the array starts. - */ - type = read_token(&token); - *tok = token; - if (type != EVENT_ITEM) - goto out_free; - - /* Find the field */ - - field = pevent_find_field(event, token); - if (!field) - goto out_free; - - arg->dynarray.field = field; - arg->dynarray.index = 0; - - if (read_expected(EVENT_DELIM, ")") < 0) - goto out_free; - - free_token(token); - type = read_token_item(&token); - *tok = token; - if (type != EVENT_OP || strcmp(token, "[") != 0) - return type; - - free_token(token); - arg = alloc_arg(); - if (!arg) { - do_warning_event(event, "%s: not enough memory!", __func__); - *tok = NULL; - return EVENT_ERROR; - } - - type = process_arg(event, arg, &token); - if (type == EVENT_ERROR) - goto out_free_arg; - - if (!test_type_token(type, token, EVENT_OP, "]")) - goto out_free_arg; - - free_token(token); - type = read_token_item(tok); - return type; - - out_free_arg: - free_arg(arg); - out_free: - free_token(token); - *tok = NULL; - return EVENT_ERROR; -} - -static enum event_type -process_dynamic_array_len(struct event_format *event, struct print_arg *arg, - char **tok) -{ - struct format_field *field; - enum event_type type; - char *token; - - if (read_expect_type(EVENT_ITEM, &token) < 0) - goto out_free; - - arg->type = PRINT_DYNAMIC_ARRAY_LEN; - - /* Find the field */ - field = pevent_find_field(event, token); - if (!field) - goto out_free; - - arg->dynarray.field = field; - arg->dynarray.index = 0; - - if (read_expected(EVENT_DELIM, ")") < 0) - goto out_err; - - type = read_token(&token); - *tok = token; - - return type; - - out_free: - free_token(token); - out_err: - *tok = NULL; - return EVENT_ERROR; -} - -static enum event_type -process_paren(struct event_format *event, struct print_arg *arg, char **tok) -{ - struct print_arg *item_arg; - enum event_type type; - char *token; - - type = process_arg(event, arg, &token); - - if (type == EVENT_ERROR) - goto out_free; - - if (type == EVENT_OP) - type = process_op(event, arg, &token); - - if (type == EVENT_ERROR) - goto out_free; - - if (test_type_token(type, token, EVENT_DELIM, ")")) - goto out_free; - - free_token(token); - type = read_token_item(&token); - - /* - * If the next token is an item or another open paren, then - * this was a typecast. - */ - if (event_item_type(type) || - (type == EVENT_DELIM && strcmp(token, "(") == 0)) { - - /* make this a typecast and contine */ - - /* prevous must be an atom */ - if (arg->type != PRINT_ATOM) { - do_warning_event(event, "previous needed to be PRINT_ATOM"); - goto out_free; - } - - item_arg = alloc_arg(); - if (!item_arg) { - do_warning_event(event, "%s: not enough memory!", - __func__); - goto out_free; - } - - arg->type = PRINT_TYPE; - arg->typecast.type = arg->atom.atom; - arg->typecast.item = item_arg; - type = process_arg_token(event, item_arg, &token, type); - - } - - *tok = token; - return type; - - out_free: - free_token(token); - *tok = NULL; - return EVENT_ERROR; -} - - -static enum event_type -process_str(struct event_format *event __maybe_unused, struct print_arg *arg, - char **tok) -{ - enum event_type type; - char *token; - - if (read_expect_type(EVENT_ITEM, &token) < 0) - goto out_free; - - arg->type = PRINT_STRING; - arg->string.string = token; - arg->string.offset = -1; - - if (read_expected(EVENT_DELIM, ")") < 0) - goto out_err; - - type = read_token(&token); - *tok = token; - - return type; - - out_free: - free_token(token); - out_err: - *tok = NULL; - return EVENT_ERROR; -} - -static enum event_type -process_bitmask(struct event_format *event __maybe_unused, struct print_arg *arg, - char **tok) -{ - enum event_type type; - char *token; - - if (read_expect_type(EVENT_ITEM, &token) < 0) - goto out_free; - - arg->type = PRINT_BITMASK; - arg->bitmask.bitmask = token; - arg->bitmask.offset = -1; - - if (read_expected(EVENT_DELIM, ")") < 0) - goto out_err; - - type = read_token(&token); - *tok = token; - - return type; - - out_free: - free_token(token); - out_err: - *tok = NULL; - return EVENT_ERROR; -} - -static struct pevent_function_handler * -find_func_handler(struct pevent *pevent, char *func_name) -{ - struct pevent_function_handler *func; - - if (!pevent) - return NULL; - - for (func = pevent->func_handlers; func; func = func->next) { - if (strcmp(func->name, func_name) == 0) - break; - } - - return func; -} - -static void remove_func_handler(struct pevent *pevent, char *func_name) -{ - struct pevent_function_handler *func; - struct pevent_function_handler **next; - - next = &pevent->func_handlers; - while ((func = *next)) { - if (strcmp(func->name, func_name) == 0) { - *next = func->next; - free_func_handle(func); - break; - } - next = &func->next; - } -} - -static enum event_type -process_func_handler(struct event_format *event, struct pevent_function_handler *func, - struct print_arg *arg, char **tok) -{ - struct print_arg **next_arg; - struct print_arg *farg; - enum event_type type; - char *token; - int i; - - arg->type = PRINT_FUNC; - arg->func.func = func; - - *tok = NULL; - - next_arg = &(arg->func.args); - for (i = 0; i < func->nr_args; i++) { - farg = alloc_arg(); - if (!farg) { - do_warning_event(event, "%s: not enough memory!", - __func__); - return EVENT_ERROR; - } - - type = process_arg(event, farg, &token); - if (i < (func->nr_args - 1)) { - if (type != EVENT_DELIM || strcmp(token, ",") != 0) { - do_warning_event(event, - "Error: function '%s()' expects %d arguments but event %s only uses %d", - func->name, func->nr_args, - event->name, i + 1); - goto err; - } - } else { - if (type != EVENT_DELIM || strcmp(token, ")") != 0) { - do_warning_event(event, - "Error: function '%s()' only expects %d arguments but event %s has more", - func->name, func->nr_args, event->name); - goto err; - } - } - - *next_arg = farg; - next_arg = &(farg->next); - free_token(token); - } - - type = read_token(&token); - *tok = token; - - return type; - -err: - free_arg(farg); - free_token(token); - return EVENT_ERROR; -} - -static enum event_type -process_function(struct event_format *event, struct print_arg *arg, - char *token, char **tok) -{ - struct pevent_function_handler *func; - - if (strcmp(token, "__print_flags") == 0) { - free_token(token); - is_flag_field = 1; - return process_flags(event, arg, tok); - } - if (strcmp(token, "__print_symbolic") == 0) { - free_token(token); - is_symbolic_field = 1; - return process_symbols(event, arg, tok); - } - if (strcmp(token, "__print_hex") == 0) { - free_token(token); - return process_hex(event, arg, tok); - } - if (strcmp(token, "__print_hex_str") == 0) { - free_token(token); - return process_hex_str(event, arg, tok); - } - if (strcmp(token, "__print_array") == 0) { - free_token(token); - return process_int_array(event, arg, tok); - } - if (strcmp(token, "__get_str") == 0) { - free_token(token); - return process_str(event, arg, tok); - } - if (strcmp(token, "__get_bitmask") == 0) { - free_token(token); - return process_bitmask(event, arg, tok); - } - if (strcmp(token, "__get_dynamic_array") == 0) { - free_token(token); - return process_dynamic_array(event, arg, tok); - } - if (strcmp(token, "__get_dynamic_array_len") == 0) { - free_token(token); - return process_dynamic_array_len(event, arg, tok); - } - - func = find_func_handler(event->pevent, token); - if (func) { - free_token(token); - return process_func_handler(event, func, arg, tok); - } - - do_warning_event(event, "function %s not defined", token); - free_token(token); - return EVENT_ERROR; -} - -static enum event_type -process_arg_token(struct event_format *event, struct print_arg *arg, - char **tok, enum event_type type) -{ - char *token; - char *atom; - - token = *tok; - - switch (type) { - case EVENT_ITEM: - if (strcmp(token, "REC") == 0) { - free_token(token); - type = process_entry(event, arg, &token); - break; - } - atom = token; - /* test the next token */ - type = read_token_item(&token); - - /* - * If the next token is a parenthesis, then this - * is a function. - */ - if (type == EVENT_DELIM && strcmp(token, "(") == 0) { - free_token(token); - token = NULL; - /* this will free atom. */ - type = process_function(event, arg, atom, &token); - break; - } - /* atoms can be more than one token long */ - while (type == EVENT_ITEM) { - char *new_atom; - new_atom = realloc(atom, - strlen(atom) + strlen(token) + 2); - if (!new_atom) { - free(atom); - *tok = NULL; - free_token(token); - return EVENT_ERROR; - } - atom = new_atom; - strcat(atom, " "); - strcat(atom, token); - free_token(token); - type = read_token_item(&token); - } - - arg->type = PRINT_ATOM; - arg->atom.atom = atom; - break; - - case EVENT_DQUOTE: - case EVENT_SQUOTE: - arg->type = PRINT_ATOM; - arg->atom.atom = token; - type = read_token_item(&token); - break; - case EVENT_DELIM: - if (strcmp(token, "(") == 0) { - free_token(token); - type = process_paren(event, arg, &token); - break; - } - case EVENT_OP: - /* handle single ops */ - arg->type = PRINT_OP; - arg->op.op = token; - arg->op.left = NULL; - type = process_op(event, arg, &token); - - /* On error, the op is freed */ - if (type == EVENT_ERROR) - arg->op.op = NULL; - - /* return error type if errored */ - break; - - case EVENT_ERROR ... EVENT_NEWLINE: - default: - do_warning_event(event, "unexpected type %d", type); - return EVENT_ERROR; - } - *tok = token; - - return type; -} - -static int event_read_print_args(struct event_format *event, struct print_arg **list) -{ - enum event_type type = EVENT_ERROR; - struct print_arg *arg; - char *token; - int args = 0; - - do { - if (type == EVENT_NEWLINE) { - type = read_token_item(&token); - continue; - } - - arg = alloc_arg(); - if (!arg) { - do_warning_event(event, "%s: not enough memory!", - __func__); - return -1; - } - - type = process_arg(event, arg, &token); - - if (type == EVENT_ERROR) { - free_token(token); - free_arg(arg); - return -1; - } - - *list = arg; - args++; - - if (type == EVENT_OP) { - type = process_op(event, arg, &token); - free_token(token); - if (type == EVENT_ERROR) { - *list = NULL; - free_arg(arg); - return -1; - } - list = &arg->next; - continue; - } - - if (type == EVENT_DELIM && strcmp(token, ",") == 0) { - free_token(token); - *list = arg; - list = &arg->next; - continue; - } - break; - } while (type != EVENT_NONE); - - if (type != EVENT_NONE && type != EVENT_ERROR) - free_token(token); - - return args; -} - -static int event_read_print(struct event_format *event) -{ - enum event_type type; - char *token; - int ret; - - if (read_expected_item(EVENT_ITEM, "print") < 0) - return -1; - - if (read_expected(EVENT_ITEM, "fmt") < 0) - return -1; - - if (read_expected(EVENT_OP, ":") < 0) - return -1; - - if (read_expect_type(EVENT_DQUOTE, &token) < 0) - goto fail; - - concat: - event->print_fmt.format = token; - event->print_fmt.args = NULL; - - /* ok to have no arg */ - type = read_token_item(&token); - - if (type == EVENT_NONE) - return 0; - - /* Handle concatenation of print lines */ - if (type == EVENT_DQUOTE) { - char *cat; - - if (asprintf(&cat, "%s%s", event->print_fmt.format, token) < 0) - goto fail; - free_token(token); - free_token(event->print_fmt.format); - event->print_fmt.format = NULL; - token = cat; - goto concat; - } - - if (test_type_token(type, token, EVENT_DELIM, ",")) - goto fail; - - free_token(token); - - ret = event_read_print_args(event, &event->print_fmt.args); - if (ret < 0) - return -1; - - return ret; - - fail: - free_token(token); - return -1; -} - -/** - * pevent_find_common_field - return a common field by event - * @event: handle for the event - * @name: the name of the common field to return - * - * Returns a common field from the event by the given @name. - * This only searchs the common fields and not all field. - */ -struct format_field * -pevent_find_common_field(struct event_format *event, const char *name) -{ - struct format_field *format; - - for (format = event->format.common_fields; - format; format = format->next) { - if (strcmp(format->name, name) == 0) - break; - } - - return format; -} - -/** - * pevent_find_field - find a non-common field - * @event: handle for the event - * @name: the name of the non-common field - * - * Returns a non-common field by the given @name. - * This does not search common fields. - */ -struct format_field * -pevent_find_field(struct event_format *event, const char *name) -{ - struct format_field *format; - - for (format = event->format.fields; - format; format = format->next) { - if (strcmp(format->name, name) == 0) - break; - } - - return format; -} - -/** - * pevent_find_any_field - find any field by name - * @event: handle for the event - * @name: the name of the field - * - * Returns a field by the given @name. - * This searchs the common field names first, then - * the non-common ones if a common one was not found. - */ -struct format_field * -pevent_find_any_field(struct event_format *event, const char *name) -{ - struct format_field *format; - - format = pevent_find_common_field(event, name); - if (format) - return format; - return pevent_find_field(event, name); -} - -/** - * pevent_read_number - read a number from data - * @pevent: handle for the pevent - * @ptr: the raw data - * @size: the size of the data that holds the number - * - * Returns the number (converted to host) from the - * raw data. - */ -unsigned long long pevent_read_number(struct pevent *pevent, - const void *ptr, int size) -{ - switch (size) { - case 1: - return *(unsigned char *)ptr; - case 2: - return data2host2(pevent, ptr); - case 4: - return data2host4(pevent, ptr); - case 8: - return data2host8(pevent, ptr); - default: - /* BUG! */ - return 0; - } -} - -/** - * pevent_read_number_field - read a number from data - * @field: a handle to the field - * @data: the raw data to read - * @value: the value to place the number in - * - * Reads raw data according to a field offset and size, - * and translates it into @value. - * - * Returns 0 on success, -1 otherwise. - */ -int pevent_read_number_field(struct format_field *field, const void *data, - unsigned long long *value) -{ - if (!field) - return -1; - switch (field->size) { - case 1: - case 2: - case 4: - case 8: - *value = pevent_read_number(field->event->pevent, - data + field->offset, field->size); - return 0; - default: - return -1; - } -} - -static int get_common_info(struct pevent *pevent, - const char *type, int *offset, int *size) -{ - struct event_format *event; - struct format_field *field; - - /* - * All events should have the same common elements. - * Pick any event to find where the type is; - */ - if (!pevent->events) { - do_warning("no event_list!"); - return -1; - } - - event = pevent->events[0]; - field = pevent_find_common_field(event, type); - if (!field) - return -1; - - *offset = field->offset; - *size = field->size; - - return 0; -} - -static int __parse_common(struct pevent *pevent, void *data, - int *size, int *offset, const char *name) -{ - int ret; - - if (!*size) { - ret = get_common_info(pevent, name, offset, size); - if (ret < 0) - return ret; - } - return pevent_read_number(pevent, data + *offset, *size); -} - -static int trace_parse_common_type(struct pevent *pevent, void *data) -{ - return __parse_common(pevent, data, - &pevent->type_size, &pevent->type_offset, - "common_type"); -} - -static int parse_common_pid(struct pevent *pevent, void *data) -{ - return __parse_common(pevent, data, - &pevent->pid_size, &pevent->pid_offset, - "common_pid"); -} - -static int parse_common_pc(struct pevent *pevent, void *data) -{ - return __parse_common(pevent, data, - &pevent->pc_size, &pevent->pc_offset, - "common_preempt_count"); -} - -static int parse_common_flags(struct pevent *pevent, void *data) -{ - return __parse_common(pevent, data, - &pevent->flags_size, &pevent->flags_offset, - "common_flags"); -} - -static int parse_common_lock_depth(struct pevent *pevent, void *data) -{ - return __parse_common(pevent, data, - &pevent->ld_size, &pevent->ld_offset, - "common_lock_depth"); -} - -static int parse_common_migrate_disable(struct pevent *pevent, void *data) -{ - return __parse_common(pevent, data, - &pevent->ld_size, &pevent->ld_offset, - "common_migrate_disable"); -} - -static int events_id_cmp(const void *a, const void *b); - -/** - * pevent_find_event - find an event by given id - * @pevent: a handle to the pevent - * @id: the id of the event - * - * Returns an event that has a given @id. - */ -struct event_format *pevent_find_event(struct pevent *pevent, int id) -{ - struct event_format **eventptr; - struct event_format key; - struct event_format *pkey = &key; - - /* Check cache first */ - if (pevent->last_event && pevent->last_event->id == id) - return pevent->last_event; - - key.id = id; - - eventptr = bsearch(&pkey, pevent->events, pevent->nr_events, - sizeof(*pevent->events), events_id_cmp); - - if (eventptr) { - pevent->last_event = *eventptr; - return *eventptr; - } - - return NULL; -} - -/** - * pevent_find_event_by_name - find an event by given name - * @pevent: a handle to the pevent - * @sys: the system name to search for - * @name: the name of the event to search for - * - * This returns an event with a given @name and under the system - * @sys. If @sys is NULL the first event with @name is returned. - */ -struct event_format * -pevent_find_event_by_name(struct pevent *pevent, - const char *sys, const char *name) -{ - struct event_format *event; - int i; - - if (pevent->last_event && - strcmp(pevent->last_event->name, name) == 0 && - (!sys || strcmp(pevent->last_event->system, sys) == 0)) - return pevent->last_event; - - for (i = 0; i < pevent->nr_events; i++) { - event = pevent->events[i]; - if (strcmp(event->name, name) == 0) { - if (!sys) - break; - if (strcmp(event->system, sys) == 0) - break; - } - } - if (i == pevent->nr_events) - event = NULL; - - pevent->last_event = event; - return event; -} - -static unsigned long long -eval_num_arg(void *data, int size, struct event_format *event, struct print_arg *arg) -{ - struct pevent *pevent = event->pevent; - unsigned long long val = 0; - unsigned long long left, right; - struct print_arg *typearg = NULL; - struct print_arg *larg; - unsigned long offset; - unsigned int field_size; - - switch (arg->type) { - case PRINT_NULL: - /* ?? */ - return 0; - case PRINT_ATOM: - return strtoull(arg->atom.atom, NULL, 0); - case PRINT_FIELD: - if (!arg->field.field) { - arg->field.field = pevent_find_any_field(event, arg->field.name); - if (!arg->field.field) - goto out_warning_field; - - } - /* must be a number */ - val = pevent_read_number(pevent, data + arg->field.field->offset, - arg->field.field->size); - break; - case PRINT_FLAGS: - case PRINT_SYMBOL: - case PRINT_INT_ARRAY: - case PRINT_HEX: - case PRINT_HEX_STR: - break; - case PRINT_TYPE: - val = eval_num_arg(data, size, event, arg->typecast.item); - return eval_type(val, arg, 0); - case PRINT_STRING: - case PRINT_BSTRING: - case PRINT_BITMASK: - return 0; - case PRINT_FUNC: { - struct trace_seq s; - trace_seq_init(&s); - val = process_defined_func(&s, data, size, event, arg); - trace_seq_destroy(&s); - return val; - } - case PRINT_OP: - if (strcmp(arg->op.op, "[") == 0) { - /* - * Arrays are special, since we don't want - * to read the arg as is. - */ - right = eval_num_arg(data, size, event, arg->op.right); - - /* handle typecasts */ - larg = arg->op.left; - while (larg->type == PRINT_TYPE) { - if (!typearg) - typearg = larg; - larg = larg->typecast.item; - } - - /* Default to long size */ - field_size = pevent->long_size; - - switch (larg->type) { - case PRINT_DYNAMIC_ARRAY: - offset = pevent_read_number(pevent, - data + larg->dynarray.field->offset, - larg->dynarray.field->size); - if (larg->dynarray.field->elementsize) - field_size = larg->dynarray.field->elementsize; - /* - * The actual length of the dynamic array is stored - * in the top half of the field, and the offset - * is in the bottom half of the 32 bit field. - */ - offset &= 0xffff; - offset += right; - break; - case PRINT_FIELD: - if (!larg->field.field) { - larg->field.field = - pevent_find_any_field(event, larg->field.name); - if (!larg->field.field) { - arg = larg; - goto out_warning_field; - } - } - field_size = larg->field.field->elementsize; - offset = larg->field.field->offset + - right * larg->field.field->elementsize; - break; - default: - goto default_op; /* oops, all bets off */ - } - val = pevent_read_number(pevent, - data + offset, field_size); - if (typearg) - val = eval_type(val, typearg, 1); - break; - } else if (strcmp(arg->op.op, "?") == 0) { - left = eval_num_arg(data, size, event, arg->op.left); - arg = arg->op.right; - if (left) - val = eval_num_arg(data, size, event, arg->op.left); - else - val = eval_num_arg(data, size, event, arg->op.right); - break; - } - default_op: - left = eval_num_arg(data, size, event, arg->op.left); - right = eval_num_arg(data, size, event, arg->op.right); - switch (arg->op.op[0]) { - case '!': - switch (arg->op.op[1]) { - case 0: - val = !right; - break; - case '=': - val = left != right; - break; - default: - goto out_warning_op; - } - break; - case '~': - val = ~right; - break; - case '|': - if (arg->op.op[1]) - val = left || right; - else - val = left | right; - break; - case '&': - if (arg->op.op[1]) - val = left && right; - else - val = left & right; - break; - case '<': - switch (arg->op.op[1]) { - case 0: - val = left < right; - break; - case '<': - val = left << right; - break; - case '=': - val = left <= right; - break; - default: - goto out_warning_op; - } - break; - case '>': - switch (arg->op.op[1]) { - case 0: - val = left > right; - break; - case '>': - val = left >> right; - break; - case '=': - val = left >= right; - break; - default: - goto out_warning_op; - } - break; - case '=': - if (arg->op.op[1] != '=') - goto out_warning_op; - - val = left == right; - break; - case '-': - val = left - right; - break; - case '+': - val = left + right; - break; - case '/': - val = left / right; - break; - case '%': - val = left % right; - break; - case '*': - val = left * right; - break; - default: - goto out_warning_op; - } - break; - case PRINT_DYNAMIC_ARRAY_LEN: - offset = pevent_read_number(pevent, - data + arg->dynarray.field->offset, - arg->dynarray.field->size); - /* - * The total allocated length of the dynamic array is - * stored in the top half of the field, and the offset - * is in the bottom half of the 32 bit field. - */ - val = (unsigned long long)(offset >> 16); - break; - case PRINT_DYNAMIC_ARRAY: - /* Without [], we pass the address to the dynamic data */ - offset = pevent_read_number(pevent, - data + arg->dynarray.field->offset, - arg->dynarray.field->size); - /* - * The total allocated length of the dynamic array is - * stored in the top half of the field, and the offset - * is in the bottom half of the 32 bit field. - */ - offset &= 0xffff; - val = (unsigned long long)((unsigned long)data + offset); - break; - default: /* not sure what to do there */ - return 0; - } - return val; - -out_warning_op: - do_warning_event(event, "%s: unknown op '%s'", __func__, arg->op.op); - return 0; - -out_warning_field: - do_warning_event(event, "%s: field %s not found", - __func__, arg->field.name); - return 0; -} - -struct flag { - const char *name; - unsigned long long value; -}; - -static const struct flag flags[] = { - { "HI_SOFTIRQ", 0 }, - { "TIMER_SOFTIRQ", 1 }, - { "NET_TX_SOFTIRQ", 2 }, - { "NET_RX_SOFTIRQ", 3 }, - { "BLOCK_SOFTIRQ", 4 }, - { "IRQ_POLL_SOFTIRQ", 5 }, - { "TASKLET_SOFTIRQ", 6 }, - { "SCHED_SOFTIRQ", 7 }, - { "HRTIMER_SOFTIRQ", 8 }, - { "RCU_SOFTIRQ", 9 }, - - { "HRTIMER_NORESTART", 0 }, - { "HRTIMER_RESTART", 1 }, -}; - -static long long eval_flag(const char *flag) -{ - int i; - - /* - * Some flags in the format files do not get converted. - * If the flag is not numeric, see if it is something that - * we already know about. - */ - if (isdigit(flag[0])) - return strtoull(flag, NULL, 0); - - for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++) - if (strcmp(flags[i].name, flag) == 0) - return flags[i].value; - - return -1LL; -} - -static void print_str_to_seq(struct trace_seq *s, const char *format, - int len_arg, const char *str) -{ - if (len_arg >= 0) - trace_seq_printf(s, format, len_arg, str); - else - trace_seq_printf(s, format, str); -} - -static void print_bitmask_to_seq(struct pevent *pevent, - struct trace_seq *s, const char *format, - int len_arg, const void *data, int size) -{ - int nr_bits = size * 8; - int str_size = (nr_bits + 3) / 4; - int len = 0; - char buf[3]; - char *str; - int index; - int i; - - /* - * The kernel likes to put in commas every 32 bits, we - * can do the same. - */ - str_size += (nr_bits - 1) / 32; - - str = malloc(str_size + 1); - if (!str) { - do_warning("%s: not enough memory!", __func__); - return; - } - str[str_size] = 0; - - /* Start out with -2 for the two chars per byte */ - for (i = str_size - 2; i >= 0; i -= 2) { - /* - * data points to a bit mask of size bytes. - * In the kernel, this is an array of long words, thus - * endianess is very important. - */ - if (pevent->file_bigendian) - index = size - (len + 1); - else - index = len; - - snprintf(buf, 3, "%02x", *((unsigned char *)data + index)); - memcpy(str + i, buf, 2); - len++; - if (!(len & 3) && i > 0) { - i--; - str[i] = ','; - } - } - - if (len_arg >= 0) - trace_seq_printf(s, format, len_arg, str); - else - trace_seq_printf(s, format, str); - - free(str); -} - -static void print_str_arg(struct trace_seq *s, void *data, int size, - struct event_format *event, const char *format, - int len_arg, struct print_arg *arg) -{ - struct pevent *pevent = event->pevent; - struct print_flag_sym *flag; - struct format_field *field; - struct printk_map *printk; - long long val, fval; - unsigned long long addr; - char *str; - unsigned char *hex; - int print; - int i, len; - - switch (arg->type) { - case PRINT_NULL: - /* ?? */ - return; - case PRINT_ATOM: - print_str_to_seq(s, format, len_arg, arg->atom.atom); - return; - case PRINT_FIELD: - field = arg->field.field; - if (!field) { - field = pevent_find_any_field(event, arg->field.name); - if (!field) { - str = arg->field.name; - goto out_warning_field; - } - arg->field.field = field; - } - /* Zero sized fields, mean the rest of the data */ - len = field->size ? : size - field->offset; - - /* - * Some events pass in pointers. If this is not an array - * and the size is the same as long_size, assume that it - * is a pointer. - */ - if (!(field->flags & FIELD_IS_ARRAY) && - field->size == pevent->long_size) { - - /* Handle heterogeneous recording and processing - * architectures - * - * CASE I: - * Traces recorded on 32-bit devices (32-bit - * addressing) and processed on 64-bit devices: - * In this case, only 32 bits should be read. - * - * CASE II: - * Traces recorded on 64 bit devices and processed - * on 32-bit devices: - * In this case, 64 bits must be read. - */ - addr = (pevent->long_size == 8) ? - *(unsigned long long *)(data + field->offset) : - (unsigned long long)*(unsigned int *)(data + field->offset); - - /* Check if it matches a print format */ - printk = find_printk(pevent, addr); - if (printk) - trace_seq_puts(s, printk->printk); - else - trace_seq_printf(s, "%llx", addr); - break; - } - str = malloc(len + 1); - if (!str) { - do_warning_event(event, "%s: not enough memory!", - __func__); - return; - } - memcpy(str, data + field->offset, len); - str[len] = 0; - print_str_to_seq(s, format, len_arg, str); - free(str); - break; - case PRINT_FLAGS: - val = eval_num_arg(data, size, event, arg->flags.field); - print = 0; - for (flag = arg->flags.flags; flag; flag = flag->next) { - fval = eval_flag(flag->value); - if (!val && fval < 0) { - print_str_to_seq(s, format, len_arg, flag->str); - break; - } - if (fval > 0 && (val & fval) == fval) { - if (print && arg->flags.delim) - trace_seq_puts(s, arg->flags.delim); - print_str_to_seq(s, format, len_arg, flag->str); - print = 1; - val &= ~fval; - } - } - break; - case PRINT_SYMBOL: - val = eval_num_arg(data, size, event, arg->symbol.field); - for (flag = arg->symbol.symbols; flag; flag = flag->next) { - fval = eval_flag(flag->value); - if (val == fval) { - print_str_to_seq(s, format, len_arg, flag->str); - break; - } - } - break; - case PRINT_HEX: - case PRINT_HEX_STR: - if (arg->hex.field->type == PRINT_DYNAMIC_ARRAY) { - unsigned long offset; - offset = pevent_read_number(pevent, - data + arg->hex.field->dynarray.field->offset, - arg->hex.field->dynarray.field->size); - hex = data + (offset & 0xffff); - } else { - field = arg->hex.field->field.field; - if (!field) { - str = arg->hex.field->field.name; - field = pevent_find_any_field(event, str); - if (!field) - goto out_warning_field; - arg->hex.field->field.field = field; - } - hex = data + field->offset; - } - len = eval_num_arg(data, size, event, arg->hex.size); - for (i = 0; i < len; i++) { - if (i && arg->type == PRINT_HEX) - trace_seq_putc(s, ' '); - trace_seq_printf(s, "%02x", hex[i]); - } - break; - - case PRINT_INT_ARRAY: { - void *num; - int el_size; - - if (arg->int_array.field->type == PRINT_DYNAMIC_ARRAY) { - unsigned long offset; - struct format_field *field = - arg->int_array.field->dynarray.field; - offset = pevent_read_number(pevent, - data + field->offset, - field->size); - num = data + (offset & 0xffff); - } else { - field = arg->int_array.field->field.field; - if (!field) { - str = arg->int_array.field->field.name; - field = pevent_find_any_field(event, str); - if (!field) - goto out_warning_field; - arg->int_array.field->field.field = field; - } - num = data + field->offset; - } - len = eval_num_arg(data, size, event, arg->int_array.count); - el_size = eval_num_arg(data, size, event, - arg->int_array.el_size); - for (i = 0; i < len; i++) { - if (i) - trace_seq_putc(s, ' '); - - if (el_size == 1) { - trace_seq_printf(s, "%u", *(uint8_t *)num); - } else if (el_size == 2) { - trace_seq_printf(s, "%u", *(uint16_t *)num); - } else if (el_size == 4) { - trace_seq_printf(s, "%u", *(uint32_t *)num); - } else if (el_size == 8) { - trace_seq_printf(s, "%"PRIu64, *(uint64_t *)num); - } else { - trace_seq_printf(s, "BAD SIZE:%d 0x%x", - el_size, *(uint8_t *)num); - el_size = 1; - } - - num += el_size; - } - break; - } - case PRINT_TYPE: - break; - case PRINT_STRING: { - int str_offset; - - if (arg->string.offset == -1) { - struct format_field *f; - - f = pevent_find_any_field(event, arg->string.string); - arg->string.offset = f->offset; - } - str_offset = data2host4(pevent, data + arg->string.offset); - str_offset &= 0xffff; - print_str_to_seq(s, format, len_arg, ((char *)data) + str_offset); - break; - } - case PRINT_BSTRING: - print_str_to_seq(s, format, len_arg, arg->string.string); - break; - case PRINT_BITMASK: { - int bitmask_offset; - int bitmask_size; - - if (arg->bitmask.offset == -1) { - struct format_field *f; - - f = pevent_find_any_field(event, arg->bitmask.bitmask); - arg->bitmask.offset = f->offset; - } - bitmask_offset = data2host4(pevent, data + arg->bitmask.offset); - bitmask_size = bitmask_offset >> 16; - bitmask_offset &= 0xffff; - print_bitmask_to_seq(pevent, s, format, len_arg, - data + bitmask_offset, bitmask_size); - break; - } - case PRINT_OP: - /* - * The only op for string should be ? : - */ - if (arg->op.op[0] != '?') - return; - val = eval_num_arg(data, size, event, arg->op.left); - if (val) - print_str_arg(s, data, size, event, - format, len_arg, arg->op.right->op.left); - else - print_str_arg(s, data, size, event, - format, len_arg, arg->op.right->op.right); - break; - case PRINT_FUNC: - process_defined_func(s, data, size, event, arg); - break; - default: - /* well... */ - break; - } - - return; - -out_warning_field: - do_warning_event(event, "%s: field %s not found", - __func__, arg->field.name); -} - -static unsigned long long -process_defined_func(struct trace_seq *s, void *data, int size, - struct event_format *event, struct print_arg *arg) -{ - struct pevent_function_handler *func_handle = arg->func.func; - struct pevent_func_params *param; - unsigned long long *args; - unsigned long long ret; - struct print_arg *farg; - struct trace_seq str; - struct save_str { - struct save_str *next; - char *str; - } *strings = NULL, *string; - int i; - - if (!func_handle->nr_args) { - ret = (*func_handle->func)(s, NULL); - goto out; - } - - farg = arg->func.args; - param = func_handle->params; - - ret = ULLONG_MAX; - args = malloc(sizeof(*args) * func_handle->nr_args); - if (!args) - goto out; - - for (i = 0; i < func_handle->nr_args; i++) { - switch (param->type) { - case PEVENT_FUNC_ARG_INT: - case PEVENT_FUNC_ARG_LONG: - case PEVENT_FUNC_ARG_PTR: - args[i] = eval_num_arg(data, size, event, farg); - break; - case PEVENT_FUNC_ARG_STRING: - trace_seq_init(&str); - print_str_arg(&str, data, size, event, "%s", -1, farg); - trace_seq_terminate(&str); - string = malloc(sizeof(*string)); - if (!string) { - do_warning_event(event, "%s(%d): malloc str", - __func__, __LINE__); - goto out_free; - } - string->next = strings; - string->str = strdup(str.buffer); - if (!string->str) { - free(string); - do_warning_event(event, "%s(%d): malloc str", - __func__, __LINE__); - goto out_free; - } - args[i] = (uintptr_t)string->str; - strings = string; - trace_seq_destroy(&str); - break; - default: - /* - * Something went totally wrong, this is not - * an input error, something in this code broke. - */ - do_warning_event(event, "Unexpected end of arguments\n"); - goto out_free; - } - farg = farg->next; - param = param->next; - } - - ret = (*func_handle->func)(s, args); -out_free: - free(args); - while (strings) { - string = strings; - strings = string->next; - free(string->str); - free(string); - } - - out: - /* TBD : handle return type here */ - return ret; -} - -static void free_args(struct print_arg *args) -{ - struct print_arg *next; - - while (args) { - next = args->next; - - free_arg(args); - args = next; - } -} - -static struct print_arg *make_bprint_args(char *fmt, void *data, int size, struct event_format *event) -{ - struct pevent *pevent = event->pevent; - struct format_field *field, *ip_field; - struct print_arg *args, *arg, **next; - unsigned long long ip, val; - char *ptr; - void *bptr; - int vsize; - - field = pevent->bprint_buf_field; - ip_field = pevent->bprint_ip_field; - - if (!field) { - field = pevent_find_field(event, "buf"); - if (!field) { - do_warning_event(event, "can't find buffer field for binary printk"); - return NULL; - } - ip_field = pevent_find_field(event, "ip"); - if (!ip_field) { - do_warning_event(event, "can't find ip field for binary printk"); - return NULL; - } - pevent->bprint_buf_field = field; - pevent->bprint_ip_field = ip_field; - } - - ip = pevent_read_number(pevent, data + ip_field->offset, ip_field->size); - - /* - * The first arg is the IP pointer. - */ - args = alloc_arg(); - if (!args) { - do_warning_event(event, "%s(%d): not enough memory!", - __func__, __LINE__); - return NULL; - } - arg = args; - arg->next = NULL; - next = &arg->next; - - arg->type = PRINT_ATOM; - - if (asprintf(&arg->atom.atom, "%lld", ip) < 0) - goto out_free; - - /* skip the first "%ps: " */ - for (ptr = fmt + 5, bptr = data + field->offset; - bptr < data + size && *ptr; ptr++) { - int ls = 0; - - if (*ptr == '%') { - process_again: - ptr++; - switch (*ptr) { - case '%': - break; - case 'l': - ls++; - goto process_again; - case 'L': - ls = 2; - goto process_again; - case '0' ... '9': - goto process_again; - case '.': - goto process_again; - case 'z': - case 'Z': - ls = 1; - goto process_again; - case 'p': - ls = 1; - /* fall through */ - case 'd': - case 'u': - case 'x': - case 'i': - switch (ls) { - case 0: - vsize = 4; - break; - case 1: - vsize = pevent->long_size; - break; - case 2: - vsize = 8; - break; - default: - vsize = ls; /* ? */ - break; - } - /* fall through */ - case '*': - if (*ptr == '*') - vsize = 4; - - /* the pointers are always 4 bytes aligned */ - bptr = (void *)(((unsigned long)bptr + 3) & - ~3); - val = pevent_read_number(pevent, bptr, vsize); - bptr += vsize; - arg = alloc_arg(); - if (!arg) { - do_warning_event(event, "%s(%d): not enough memory!", - __func__, __LINE__); - goto out_free; - } - arg->next = NULL; - arg->type = PRINT_ATOM; - if (asprintf(&arg->atom.atom, "%lld", val) < 0) { - free(arg); - goto out_free; - } - *next = arg; - next = &arg->next; - /* - * The '*' case means that an arg is used as the length. - * We need to continue to figure out for what. - */ - if (*ptr == '*') - goto process_again; - - break; - case 's': - arg = alloc_arg(); - if (!arg) { - do_warning_event(event, "%s(%d): not enough memory!", - __func__, __LINE__); - goto out_free; - } - arg->next = NULL; - arg->type = PRINT_BSTRING; - arg->string.string = strdup(bptr); - if (!arg->string.string) - goto out_free; - bptr += strlen(bptr) + 1; - *next = arg; - next = &arg->next; - default: - break; - } - } - } - - return args; - -out_free: - free_args(args); - return NULL; -} - -static char * -get_bprint_format(void *data, int size __maybe_unused, - struct event_format *event) -{ - struct pevent *pevent = event->pevent; - unsigned long long addr; - struct format_field *field; - struct printk_map *printk; - char *format; - - field = pevent->bprint_fmt_field; - - if (!field) { - field = pevent_find_field(event, "fmt"); - if (!field) { - do_warning_event(event, "can't find format field for binary printk"); - return NULL; - } - pevent->bprint_fmt_field = field; - } - - addr = pevent_read_number(pevent, data + field->offset, field->size); - - printk = find_printk(pevent, addr); - if (!printk) { - if (asprintf(&format, "%%pf: (NO FORMAT FOUND at %llx)\n", addr) < 0) - return NULL; - return format; - } - - if (asprintf(&format, "%s: %s", "%pf", printk->printk) < 0) - return NULL; - - return format; -} - -static void print_mac_arg(struct trace_seq *s, int mac, void *data, int size, - struct event_format *event, struct print_arg *arg) -{ - unsigned char *buf; - const char *fmt = "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x"; - - if (arg->type == PRINT_FUNC) { - process_defined_func(s, data, size, event, arg); - return; - } - - if (arg->type != PRINT_FIELD) { - trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", - arg->type); - return; - } - - if (mac == 'm') - fmt = "%.2x%.2x%.2x%.2x%.2x%.2x"; - if (!arg->field.field) { - arg->field.field = - pevent_find_any_field(event, arg->field.name); - if (!arg->field.field) { - do_warning_event(event, "%s: field %s not found", - __func__, arg->field.name); - return; - } - } - if (arg->field.field->size != 6) { - trace_seq_printf(s, "INVALIDMAC"); - return; - } - buf = data + arg->field.field->offset; - trace_seq_printf(s, fmt, buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]); -} - -static void print_ip4_addr(struct trace_seq *s, char i, unsigned char *buf) -{ - const char *fmt; - - if (i == 'i') - fmt = "%03d.%03d.%03d.%03d"; - else - fmt = "%d.%d.%d.%d"; - - trace_seq_printf(s, fmt, buf[0], buf[1], buf[2], buf[3]); -} - -static inline bool ipv6_addr_v4mapped(const struct in6_addr *a) -{ - return ((unsigned long)(a->s6_addr32[0] | a->s6_addr32[1]) | - (unsigned long)(a->s6_addr32[2] ^ htonl(0x0000ffff))) == 0UL; -} - -static inline bool ipv6_addr_is_isatap(const struct in6_addr *addr) -{ - return (addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE); -} - -static void print_ip6c_addr(struct trace_seq *s, unsigned char *addr) -{ - int i, j, range; - unsigned char zerolength[8]; - int longest = 1; - int colonpos = -1; - uint16_t word; - uint8_t hi, lo; - bool needcolon = false; - bool useIPv4; - struct in6_addr in6; - - memcpy(&in6, addr, sizeof(struct in6_addr)); - - useIPv4 = ipv6_addr_v4mapped(&in6) || ipv6_addr_is_isatap(&in6); - - memset(zerolength, 0, sizeof(zerolength)); - - if (useIPv4) - range = 6; - else - range = 8; - - /* find position of longest 0 run */ - for (i = 0; i < range; i++) { - for (j = i; j < range; j++) { - if (in6.s6_addr16[j] != 0) - break; - zerolength[i]++; - } - } - for (i = 0; i < range; i++) { - if (zerolength[i] > longest) { - longest = zerolength[i]; - colonpos = i; - } - } - if (longest == 1) /* don't compress a single 0 */ - colonpos = -1; - - /* emit address */ - for (i = 0; i < range; i++) { - if (i == colonpos) { - if (needcolon || i == 0) - trace_seq_printf(s, ":"); - trace_seq_printf(s, ":"); - needcolon = false; - i += longest - 1; - continue; - } - if (needcolon) { - trace_seq_printf(s, ":"); - needcolon = false; - } - /* hex u16 without leading 0s */ - word = ntohs(in6.s6_addr16[i]); - hi = word >> 8; - lo = word & 0xff; - if (hi) - trace_seq_printf(s, "%x%02x", hi, lo); - else - trace_seq_printf(s, "%x", lo); - - needcolon = true; - } - - if (useIPv4) { - if (needcolon) - trace_seq_printf(s, ":"); - print_ip4_addr(s, 'I', &in6.s6_addr[12]); - } - - return; -} - -static void print_ip6_addr(struct trace_seq *s, char i, unsigned char *buf) -{ - int j; - - for (j = 0; j < 16; j += 2) { - trace_seq_printf(s, "%02x%02x", buf[j], buf[j+1]); - if (i == 'I' && j < 14) - trace_seq_printf(s, ":"); - } -} - -/* - * %pi4 print an IPv4 address with leading zeros - * %pI4 print an IPv4 address without leading zeros - * %pi6 print an IPv6 address without colons - * %pI6 print an IPv6 address with colons - * %pI6c print an IPv6 address in compressed form with colons - * %pISpc print an IP address based on sockaddr; p adds port. - */ -static int print_ipv4_arg(struct trace_seq *s, const char *ptr, char i, - void *data, int size, struct event_format *event, - struct print_arg *arg) -{ - unsigned char *buf; - - if (arg->type == PRINT_FUNC) { - process_defined_func(s, data, size, event, arg); - return 0; - } - - if (arg->type != PRINT_FIELD) { - trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type); - return 0; - } - - if (!arg->field.field) { - arg->field.field = - pevent_find_any_field(event, arg->field.name); - if (!arg->field.field) { - do_warning("%s: field %s not found", - __func__, arg->field.name); - return 0; - } - } - - buf = data + arg->field.field->offset; - - if (arg->field.field->size != 4) { - trace_seq_printf(s, "INVALIDIPv4"); - return 0; - } - print_ip4_addr(s, i, buf); - - return 0; -} - -static int print_ipv6_arg(struct trace_seq *s, const char *ptr, char i, - void *data, int size, struct event_format *event, - struct print_arg *arg) -{ - char have_c = 0; - unsigned char *buf; - int rc = 0; - - /* pI6c */ - if (i == 'I' && *ptr == 'c') { - have_c = 1; - ptr++; - rc++; - } - - if (arg->type == PRINT_FUNC) { - process_defined_func(s, data, size, event, arg); - return rc; - } - - if (arg->type != PRINT_FIELD) { - trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type); - return rc; - } - - if (!arg->field.field) { - arg->field.field = - pevent_find_any_field(event, arg->field.name); - if (!arg->field.field) { - do_warning("%s: field %s not found", - __func__, arg->field.name); - return rc; - } - } - - buf = data + arg->field.field->offset; - - if (arg->field.field->size != 16) { - trace_seq_printf(s, "INVALIDIPv6"); - return rc; - } - - if (have_c) - print_ip6c_addr(s, buf); - else - print_ip6_addr(s, i, buf); - - return rc; -} - -static int print_ipsa_arg(struct trace_seq *s, const char *ptr, char i, - void *data, int size, struct event_format *event, - struct print_arg *arg) -{ - char have_c = 0, have_p = 0; - unsigned char *buf; - struct sockaddr_storage *sa; - int rc = 0; - - /* pISpc */ - if (i == 'I') { - if (*ptr == 'p') { - have_p = 1; - ptr++; - rc++; - } - if (*ptr == 'c') { - have_c = 1; - ptr++; - rc++; - } - } - - if (arg->type == PRINT_FUNC) { - process_defined_func(s, data, size, event, arg); - return rc; - } - - if (arg->type != PRINT_FIELD) { - trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type); - return rc; - } - - if (!arg->field.field) { - arg->field.field = - pevent_find_any_field(event, arg->field.name); - if (!arg->field.field) { - do_warning("%s: field %s not found", - __func__, arg->field.name); - return rc; - } - } - - sa = (struct sockaddr_storage *) (data + arg->field.field->offset); - - if (sa->ss_family == AF_INET) { - struct sockaddr_in *sa4 = (struct sockaddr_in *) sa; - - if (arg->field.field->size < sizeof(struct sockaddr_in)) { - trace_seq_printf(s, "INVALIDIPv4"); - return rc; - } - - print_ip4_addr(s, i, (unsigned char *) &sa4->sin_addr); - if (have_p) - trace_seq_printf(s, ":%d", ntohs(sa4->sin_port)); - - - } else if (sa->ss_family == AF_INET6) { - struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) sa; - - if (arg->field.field->size < sizeof(struct sockaddr_in6)) { - trace_seq_printf(s, "INVALIDIPv6"); - return rc; - } - - if (have_p) - trace_seq_printf(s, "["); - - buf = (unsigned char *) &sa6->sin6_addr; - if (have_c) - print_ip6c_addr(s, buf); - else - print_ip6_addr(s, i, buf); - - if (have_p) - trace_seq_printf(s, "]:%d", ntohs(sa6->sin6_port)); - } - - return rc; -} - -static int print_ip_arg(struct trace_seq *s, const char *ptr, - void *data, int size, struct event_format *event, - struct print_arg *arg) -{ - char i = *ptr; /* 'i' or 'I' */ - char ver; - int rc = 0; - - ptr++; - rc++; - - ver = *ptr; - ptr++; - rc++; - - switch (ver) { - case '4': - rc += print_ipv4_arg(s, ptr, i, data, size, event, arg); - break; - case '6': - rc += print_ipv6_arg(s, ptr, i, data, size, event, arg); - break; - case 'S': - rc += print_ipsa_arg(s, ptr, i, data, size, event, arg); - break; - default: - return 0; - } - - return rc; -} - -static int is_printable_array(char *p, unsigned int len) -{ - unsigned int i; - - for (i = 0; i < len && p[i]; i++) - if (!isprint(p[i]) && !isspace(p[i])) - return 0; - return 1; -} - -void pevent_print_field(struct trace_seq *s, void *data, - struct format_field *field) -{ - unsigned long long val; - unsigned int offset, len, i; - struct pevent *pevent = field->event->pevent; - - if (field->flags & FIELD_IS_ARRAY) { - offset = field->offset; - len = field->size; - if (field->flags & FIELD_IS_DYNAMIC) { - val = pevent_read_number(pevent, data + offset, len); - offset = val; - len = offset >> 16; - offset &= 0xffff; - } - if (field->flags & FIELD_IS_STRING && - is_printable_array(data + offset, len)) { - trace_seq_printf(s, "%s", (char *)data + offset); - } else { - trace_seq_puts(s, "ARRAY["); - for (i = 0; i < len; i++) { - if (i) - trace_seq_puts(s, ", "); - trace_seq_printf(s, "%02x", - *((unsigned char *)data + offset + i)); - } - trace_seq_putc(s, ']'); - field->flags &= ~FIELD_IS_STRING; - } - } else { - val = pevent_read_number(pevent, data + field->offset, - field->size); - if (field->flags & FIELD_IS_POINTER) { - trace_seq_printf(s, "0x%llx", val); - } else if (field->flags & FIELD_IS_SIGNED) { - switch (field->size) { - case 4: - /* - * If field is long then print it in hex. - * A long usually stores pointers. - */ - if (field->flags & FIELD_IS_LONG) - trace_seq_printf(s, "0x%x", (int)val); - else - trace_seq_printf(s, "%d", (int)val); - break; - case 2: - trace_seq_printf(s, "%2d", (short)val); - break; - case 1: - trace_seq_printf(s, "%1d", (char)val); - break; - default: - trace_seq_printf(s, "%lld", val); - } - } else { - if (field->flags & FIELD_IS_LONG) - trace_seq_printf(s, "0x%llx", val); - else - trace_seq_printf(s, "%llu", val); - } - } -} - -void pevent_print_fields(struct trace_seq *s, void *data, - int size __maybe_unused, struct event_format *event) -{ - struct format_field *field; - - field = event->format.fields; - while (field) { - trace_seq_printf(s, " %s=", field->name); - pevent_print_field(s, data, field); - field = field->next; - } -} - -static void pretty_print(struct trace_seq *s, void *data, int size, struct event_format *event) -{ - struct pevent *pevent = event->pevent; - struct print_fmt *print_fmt = &event->print_fmt; - struct print_arg *arg = print_fmt->args; - struct print_arg *args = NULL; - const char *ptr = print_fmt->format; - unsigned long long val; - struct func_map *func; - const char *saveptr; - struct trace_seq p; - char *bprint_fmt = NULL; - char format[32]; - int show_func; - int len_as_arg; - int len_arg; - int len; - int ls; - - if (event->flags & EVENT_FL_FAILED) { - trace_seq_printf(s, "[FAILED TO PARSE]"); - pevent_print_fields(s, data, size, event); - return; - } - - if (event->flags & EVENT_FL_ISBPRINT) { - bprint_fmt = get_bprint_format(data, size, event); - args = make_bprint_args(bprint_fmt, data, size, event); - arg = args; - ptr = bprint_fmt; - } - - for (; *ptr; ptr++) { - ls = 0; - if (*ptr == '\\') { - ptr++; - switch (*ptr) { - case 'n': - trace_seq_putc(s, '\n'); - break; - case 't': - trace_seq_putc(s, '\t'); - break; - case 'r': - trace_seq_putc(s, '\r'); - break; - case '\\': - trace_seq_putc(s, '\\'); - break; - default: - trace_seq_putc(s, *ptr); - break; - } - - } else if (*ptr == '%') { - saveptr = ptr; - show_func = 0; - len_as_arg = 0; - cont_process: - ptr++; - switch (*ptr) { - case '%': - trace_seq_putc(s, '%'); - break; - case '#': - /* FIXME: need to handle properly */ - goto cont_process; - case 'h': - ls--; - goto cont_process; - case 'l': - ls++; - goto cont_process; - case 'L': - ls = 2; - goto cont_process; - case '*': - /* The argument is the length. */ - if (!arg) { - do_warning_event(event, "no argument match"); - event->flags |= EVENT_FL_FAILED; - goto out_failed; - } - len_arg = eval_num_arg(data, size, event, arg); - len_as_arg = 1; - arg = arg->next; - goto cont_process; - case '.': - case 'z': - case 'Z': - case '0' ... '9': - case '-': - goto cont_process; - case 'p': - if (pevent->long_size == 4) - ls = 1; - else - ls = 2; - - if (*(ptr+1) == 'F' || *(ptr+1) == 'f' || - *(ptr+1) == 'S' || *(ptr+1) == 's') { - ptr++; - show_func = *ptr; - } else if (*(ptr+1) == 'M' || *(ptr+1) == 'm') { - print_mac_arg(s, *(ptr+1), data, size, event, arg); - ptr++; - arg = arg->next; - break; - } else if (*(ptr+1) == 'I' || *(ptr+1) == 'i') { - int n; - - n = print_ip_arg(s, ptr+1, data, size, event, arg); - if (n > 0) { - ptr += n; - arg = arg->next; - break; - } - } - - /* fall through */ - case 'd': - case 'i': - case 'x': - case 'X': - case 'u': - if (!arg) { - do_warning_event(event, "no argument match"); - event->flags |= EVENT_FL_FAILED; - goto out_failed; - } - - len = ((unsigned long)ptr + 1) - - (unsigned long)saveptr; - - /* should never happen */ - if (len > 31) { - do_warning_event(event, "bad format!"); - event->flags |= EVENT_FL_FAILED; - len = 31; - } - - memcpy(format, saveptr, len); - format[len] = 0; - - val = eval_num_arg(data, size, event, arg); - arg = arg->next; - - if (show_func) { - func = find_func(pevent, val); - if (func) { - trace_seq_puts(s, func->func); - if (show_func == 'F') - trace_seq_printf(s, - "+0x%llx", - val - func->addr); - break; - } - } - if (pevent->long_size == 8 && ls == 1 && - sizeof(long) != 8) { - char *p; - - /* make %l into %ll */ - if (ls == 1 && (p = strchr(format, 'l'))) - memmove(p+1, p, strlen(p)+1); - else if (strcmp(format, "%p") == 0) - strcpy(format, "0x%llx"); - ls = 2; - } - switch (ls) { - case -2: - if (len_as_arg) - trace_seq_printf(s, format, len_arg, (char)val); - else - trace_seq_printf(s, format, (char)val); - break; - case -1: - if (len_as_arg) - trace_seq_printf(s, format, len_arg, (short)val); - else - trace_seq_printf(s, format, (short)val); - break; - case 0: - if (len_as_arg) - trace_seq_printf(s, format, len_arg, (int)val); - else - trace_seq_printf(s, format, (int)val); - break; - case 1: - if (len_as_arg) - trace_seq_printf(s, format, len_arg, (long)val); - else - trace_seq_printf(s, format, (long)val); - break; - case 2: - if (len_as_arg) - trace_seq_printf(s, format, len_arg, - (long long)val); - else - trace_seq_printf(s, format, (long long)val); - break; - default: - do_warning_event(event, "bad count (%d)", ls); - event->flags |= EVENT_FL_FAILED; - } - break; - case 's': - if (!arg) { - do_warning_event(event, "no matching argument"); - event->flags |= EVENT_FL_FAILED; - goto out_failed; - } - - len = ((unsigned long)ptr + 1) - - (unsigned long)saveptr; - - /* should never happen */ - if (len > 31) { - do_warning_event(event, "bad format!"); - event->flags |= EVENT_FL_FAILED; - len = 31; - } - - memcpy(format, saveptr, len); - format[len] = 0; - if (!len_as_arg) - len_arg = -1; - /* Use helper trace_seq */ - trace_seq_init(&p); - print_str_arg(&p, data, size, event, - format, len_arg, arg); - trace_seq_terminate(&p); - trace_seq_puts(s, p.buffer); - trace_seq_destroy(&p); - arg = arg->next; - break; - default: - trace_seq_printf(s, ">%c<", *ptr); - - } - } else - trace_seq_putc(s, *ptr); - } - - if (event->flags & EVENT_FL_FAILED) { -out_failed: - trace_seq_printf(s, "[FAILED TO PARSE]"); - } - - if (args) { - free_args(args); - free(bprint_fmt); - } -} - -/** - * pevent_data_lat_fmt - parse the data for the latency format - * @pevent: a handle to the pevent - * @s: the trace_seq to write to - * @record: the record to read from - * - * This parses out the Latency format (interrupts disabled, - * need rescheduling, in hard/soft interrupt, preempt count - * and lock depth) and places it into the trace_seq. - */ -void pevent_data_lat_fmt(struct pevent *pevent, - struct trace_seq *s, struct pevent_record *record) -{ - static int check_lock_depth = 1; - static int check_migrate_disable = 1; - static int lock_depth_exists; - static int migrate_disable_exists; - unsigned int lat_flags; - unsigned int pc; - int lock_depth; - int migrate_disable; - int hardirq; - int softirq; - void *data = record->data; - - lat_flags = parse_common_flags(pevent, data); - pc = parse_common_pc(pevent, data); - /* lock_depth may not always exist */ - if (lock_depth_exists) - lock_depth = parse_common_lock_depth(pevent, data); - else if (check_lock_depth) { - lock_depth = parse_common_lock_depth(pevent, data); - if (lock_depth < 0) - check_lock_depth = 0; - else - lock_depth_exists = 1; - } - - /* migrate_disable may not always exist */ - if (migrate_disable_exists) - migrate_disable = parse_common_migrate_disable(pevent, data); - else if (check_migrate_disable) { - migrate_disable = parse_common_migrate_disable(pevent, data); - if (migrate_disable < 0) - check_migrate_disable = 0; - else - migrate_disable_exists = 1; - } - - hardirq = lat_flags & TRACE_FLAG_HARDIRQ; - softirq = lat_flags & TRACE_FLAG_SOFTIRQ; - - trace_seq_printf(s, "%c%c%c", - (lat_flags & TRACE_FLAG_IRQS_OFF) ? 'd' : - (lat_flags & TRACE_FLAG_IRQS_NOSUPPORT) ? - 'X' : '.', - (lat_flags & TRACE_FLAG_NEED_RESCHED) ? - 'N' : '.', - (hardirq && softirq) ? 'H' : - hardirq ? 'h' : softirq ? 's' : '.'); - - if (pc) - trace_seq_printf(s, "%x", pc); - else - trace_seq_putc(s, '.'); - - if (migrate_disable_exists) { - if (migrate_disable < 0) - trace_seq_putc(s, '.'); - else - trace_seq_printf(s, "%d", migrate_disable); - } - - if (lock_depth_exists) { - if (lock_depth < 0) - trace_seq_putc(s, '.'); - else - trace_seq_printf(s, "%d", lock_depth); - } - - trace_seq_terminate(s); -} - -/** - * pevent_data_type - parse out the given event type - * @pevent: a handle to the pevent - * @rec: the record to read from - * - * This returns the event id from the @rec. - */ -int pevent_data_type(struct pevent *pevent, struct pevent_record *rec) -{ - return trace_parse_common_type(pevent, rec->data); -} - -/** - * pevent_data_event_from_type - find the event by a given type - * @pevent: a handle to the pevent - * @type: the type of the event. - * - * This returns the event form a given @type; - */ -struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type) -{ - return pevent_find_event(pevent, type); -} - -/** - * pevent_data_pid - parse the PID from record - * @pevent: a handle to the pevent - * @rec: the record to parse - * - * This returns the PID from a record. - */ -int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec) -{ - return parse_common_pid(pevent, rec->data); -} - -/** - * pevent_data_preempt_count - parse the preempt count from the record - * @pevent: a handle to the pevent - * @rec: the record to parse - * - * This returns the preempt count from a record. - */ -int pevent_data_preempt_count(struct pevent *pevent, struct pevent_record *rec) -{ - return parse_common_pc(pevent, rec->data); -} - -/** - * pevent_data_flags - parse the latency flags from the record - * @pevent: a handle to the pevent - * @rec: the record to parse - * - * This returns the latency flags from a record. - * - * Use trace_flag_type enum for the flags (see event-parse.h). - */ -int pevent_data_flags(struct pevent *pevent, struct pevent_record *rec) -{ - return parse_common_flags(pevent, rec->data); -} - -/** - * pevent_data_comm_from_pid - return the command line from PID - * @pevent: a handle to the pevent - * @pid: the PID of the task to search for - * - * This returns a pointer to the command line that has the given - * @pid. - */ -const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid) -{ - const char *comm; - - comm = find_cmdline(pevent, pid); - return comm; -} - -static struct cmdline * -pid_from_cmdlist(struct pevent *pevent, const char *comm, struct cmdline *next) -{ - struct cmdline_list *cmdlist = (struct cmdline_list *)next; - - if (cmdlist) - cmdlist = cmdlist->next; - else - cmdlist = pevent->cmdlist; - - while (cmdlist && strcmp(cmdlist->comm, comm) != 0) - cmdlist = cmdlist->next; - - return (struct cmdline *)cmdlist; -} - -/** - * pevent_data_pid_from_comm - return the pid from a given comm - * @pevent: a handle to the pevent - * @comm: the cmdline to find the pid from - * @next: the cmdline structure to find the next comm - * - * This returns the cmdline structure that holds a pid for a given - * comm, or NULL if none found. As there may be more than one pid for - * a given comm, the result of this call can be passed back into - * a recurring call in the @next paramater, and then it will find the - * next pid. - * Also, it does a linear seach, so it may be slow. - */ -struct cmdline *pevent_data_pid_from_comm(struct pevent *pevent, const char *comm, - struct cmdline *next) -{ - struct cmdline *cmdline; - - /* - * If the cmdlines have not been converted yet, then use - * the list. - */ - if (!pevent->cmdlines) - return pid_from_cmdlist(pevent, comm, next); - - if (next) { - /* - * The next pointer could have been still from - * a previous call before cmdlines were created - */ - if (next < pevent->cmdlines || - next >= pevent->cmdlines + pevent->cmdline_count) - next = NULL; - else - cmdline = next++; - } - - if (!next) - cmdline = pevent->cmdlines; - - while (cmdline < pevent->cmdlines + pevent->cmdline_count) { - if (strcmp(cmdline->comm, comm) == 0) - return cmdline; - cmdline++; - } - return NULL; -} - -/** - * pevent_cmdline_pid - return the pid associated to a given cmdline - * @cmdline: The cmdline structure to get the pid from - * - * Returns the pid for a give cmdline. If @cmdline is NULL, then - * -1 is returned. - */ -int pevent_cmdline_pid(struct pevent *pevent, struct cmdline *cmdline) -{ - struct cmdline_list *cmdlist = (struct cmdline_list *)cmdline; - - if (!cmdline) - return -1; - - /* - * If cmdlines have not been created yet, or cmdline is - * not part of the array, then treat it as a cmdlist instead. - */ - if (!pevent->cmdlines || - cmdline < pevent->cmdlines || - cmdline >= pevent->cmdlines + pevent->cmdline_count) - return cmdlist->pid; - - return cmdline->pid; -} - -/** - * pevent_data_comm_from_pid - parse the data into the print format - * @s: the trace_seq to write to - * @event: the handle to the event - * @record: the record to read from - * - * This parses the raw @data using the given @event information and - * writes the print format into the trace_seq. - */ -void pevent_event_info(struct trace_seq *s, struct event_format *event, - struct pevent_record *record) -{ - int print_pretty = 1; - - if (event->pevent->print_raw || (event->flags & EVENT_FL_PRINTRAW)) - pevent_print_fields(s, record->data, record->size, event); - else { - - if (event->handler && !(event->flags & EVENT_FL_NOHANDLE)) - print_pretty = event->handler(s, record, event, - event->context); - - if (print_pretty) - pretty_print(s, record->data, record->size, event); - } - - trace_seq_terminate(s); -} - -static bool is_timestamp_in_us(char *trace_clock, bool use_trace_clock) -{ - if (!use_trace_clock) - return true; - - if (!strcmp(trace_clock, "local") || !strcmp(trace_clock, "global") - || !strcmp(trace_clock, "uptime") || !strcmp(trace_clock, "perf")) - return true; - - /* trace_clock is setting in tsc or counter mode */ - return false; -} - -/** - * pevent_find_event_by_record - return the event from a given record - * @pevent: a handle to the pevent - * @record: The record to get the event from - * - * Returns the associated event for a given record, or NULL if non is - * is found. - */ -struct event_format * -pevent_find_event_by_record(struct pevent *pevent, struct pevent_record *record) -{ - int type; - - if (record->size < 0) { - do_warning("ug! negative record size %d", record->size); - return NULL; - } - - type = trace_parse_common_type(pevent, record->data); - - return pevent_find_event(pevent, type); -} - -/** - * pevent_print_event_task - Write the event task comm, pid and CPU - * @pevent: a handle to the pevent - * @s: the trace_seq to write to - * @event: the handle to the record's event - * @record: The record to get the event from - * - * Writes the tasks comm, pid and CPU to @s. - */ -void pevent_print_event_task(struct pevent *pevent, struct trace_seq *s, - struct event_format *event, - struct pevent_record *record) -{ - void *data = record->data; - const char *comm; - int pid; - - pid = parse_common_pid(pevent, data); - comm = find_cmdline(pevent, pid); - - if (pevent->latency_format) { - trace_seq_printf(s, "%8.8s-%-5d %3d", - comm, pid, record->cpu); - } else - trace_seq_printf(s, "%16s-%-5d [%03d]", comm, pid, record->cpu); -} - -/** - * pevent_print_event_time - Write the event timestamp - * @pevent: a handle to the pevent - * @s: the trace_seq to write to - * @event: the handle to the record's event - * @record: The record to get the event from - * @use_trace_clock: Set to parse according to the @pevent->trace_clock - * - * Writes the timestamp of the record into @s. - */ -void pevent_print_event_time(struct pevent *pevent, struct trace_seq *s, - struct event_format *event, - struct pevent_record *record, - bool use_trace_clock) -{ - unsigned long secs; - unsigned long usecs; - unsigned long nsecs; - int p; - bool use_usec_format; - - use_usec_format = is_timestamp_in_us(pevent->trace_clock, - use_trace_clock); - if (use_usec_format) { - secs = record->ts / NSEC_PER_SEC; - nsecs = record->ts - secs * NSEC_PER_SEC; - } - - if (pevent->latency_format) { - pevent_data_lat_fmt(pevent, s, record); - } - - if (use_usec_format) { - if (pevent->flags & PEVENT_NSEC_OUTPUT) { - usecs = nsecs; - p = 9; - } else { - usecs = (nsecs + 500) / NSEC_PER_USEC; - /* To avoid usecs larger than 1 sec */ - if (usecs >= USEC_PER_SEC) { - usecs -= USEC_PER_SEC; - secs++; - } - p = 6; - } - - trace_seq_printf(s, " %5lu.%0*lu:", secs, p, usecs); - } else - trace_seq_printf(s, " %12llu:", record->ts); -} - -/** - * pevent_print_event_data - Write the event data section - * @pevent: a handle to the pevent - * @s: the trace_seq to write to - * @event: the handle to the record's event - * @record: The record to get the event from - * - * Writes the parsing of the record's data to @s. - */ -void pevent_print_event_data(struct pevent *pevent, struct trace_seq *s, - struct event_format *event, - struct pevent_record *record) -{ - static const char *spaces = " "; /* 20 spaces */ - int len; - - trace_seq_printf(s, " %s: ", event->name); - - /* Space out the event names evenly. */ - len = strlen(event->name); - if (len < 20) - trace_seq_printf(s, "%.*s", 20 - len, spaces); - - pevent_event_info(s, event, record); -} - -void pevent_print_event(struct pevent *pevent, struct trace_seq *s, - struct pevent_record *record, bool use_trace_clock) -{ - struct event_format *event; - - event = pevent_find_event_by_record(pevent, record); - if (!event) { - do_warning("ug! no event found for type %d", - trace_parse_common_type(pevent, record->data)); - return; - } - - pevent_print_event_task(pevent, s, event, record); - pevent_print_event_time(pevent, s, event, record, use_trace_clock); - pevent_print_event_data(pevent, s, event, record); -} - -static int events_id_cmp(const void *a, const void *b) -{ - struct event_format * const * ea = a; - struct event_format * const * eb = b; - - if ((*ea)->id < (*eb)->id) - return -1; - - if ((*ea)->id > (*eb)->id) - return 1; - - return 0; -} - -static int events_name_cmp(const void *a, const void *b) -{ - struct event_format * const * ea = a; - struct event_format * const * eb = b; - int res; - - res = strcmp((*ea)->name, (*eb)->name); - if (res) - return res; - - res = strcmp((*ea)->system, (*eb)->system); - if (res) - return res; - - return events_id_cmp(a, b); -} - -static int events_system_cmp(const void *a, const void *b) -{ - struct event_format * const * ea = a; - struct event_format * const * eb = b; - int res; - - res = strcmp((*ea)->system, (*eb)->system); - if (res) - return res; - - res = strcmp((*ea)->name, (*eb)->name); - if (res) - return res; - - return events_id_cmp(a, b); -} - -struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type sort_type) -{ - struct event_format **events; - int (*sort)(const void *a, const void *b); - - events = pevent->sort_events; - - if (events && pevent->last_type == sort_type) - return events; - - if (!events) { - events = malloc(sizeof(*events) * (pevent->nr_events + 1)); - if (!events) - return NULL; - - memcpy(events, pevent->events, sizeof(*events) * pevent->nr_events); - events[pevent->nr_events] = NULL; - - pevent->sort_events = events; - - /* the internal events are sorted by id */ - if (sort_type == EVENT_SORT_ID) { - pevent->last_type = sort_type; - return events; - } - } - - switch (sort_type) { - case EVENT_SORT_ID: - sort = events_id_cmp; - break; - case EVENT_SORT_NAME: - sort = events_name_cmp; - break; - case EVENT_SORT_SYSTEM: - sort = events_system_cmp; - break; - default: - return events; - } - - qsort(events, pevent->nr_events, sizeof(*events), sort); - pevent->last_type = sort_type; - - return events; -} - -static struct format_field ** -get_event_fields(const char *type, const char *name, - int count, struct format_field *list) -{ - struct format_field **fields; - struct format_field *field; - int i = 0; - - fields = malloc(sizeof(*fields) * (count + 1)); - if (!fields) - return NULL; - - for (field = list; field; field = field->next) { - fields[i++] = field; - if (i == count + 1) { - do_warning("event %s has more %s fields than specified", - name, type); - i--; - break; - } - } - - if (i != count) - do_warning("event %s has less %s fields than specified", - name, type); - - fields[i] = NULL; - - return fields; -} - -/** - * pevent_event_common_fields - return a list of common fields for an event - * @event: the event to return the common fields of. - * - * Returns an allocated array of fields. The last item in the array is NULL. - * The array must be freed with free(). - */ -struct format_field **pevent_event_common_fields(struct event_format *event) -{ - return get_event_fields("common", event->name, - event->format.nr_common, - event->format.common_fields); -} - -/** - * pevent_event_fields - return a list of event specific fields for an event - * @event: the event to return the fields of. - * - * Returns an allocated array of fields. The last item in the array is NULL. - * The array must be freed with free(). - */ -struct format_field **pevent_event_fields(struct event_format *event) -{ - return get_event_fields("event", event->name, - event->format.nr_fields, - event->format.fields); -} - -static void print_fields(struct trace_seq *s, struct print_flag_sym *field) -{ - trace_seq_printf(s, "{ %s, %s }", field->value, field->str); - if (field->next) { - trace_seq_puts(s, ", "); - print_fields(s, field->next); - } -} - -/* for debugging */ -static void print_args(struct print_arg *args) -{ - int print_paren = 1; - struct trace_seq s; - - switch (args->type) { - case PRINT_NULL: - printf("null"); - break; - case PRINT_ATOM: - printf("%s", args->atom.atom); - break; - case PRINT_FIELD: - printf("REC->%s", args->field.name); - break; - case PRINT_FLAGS: - printf("__print_flags("); - print_args(args->flags.field); - printf(", %s, ", args->flags.delim); - trace_seq_init(&s); - print_fields(&s, args->flags.flags); - trace_seq_do_printf(&s); - trace_seq_destroy(&s); - printf(")"); - break; - case PRINT_SYMBOL: - printf("__print_symbolic("); - print_args(args->symbol.field); - printf(", "); - trace_seq_init(&s); - print_fields(&s, args->symbol.symbols); - trace_seq_do_printf(&s); - trace_seq_destroy(&s); - printf(")"); - break; - case PRINT_HEX: - printf("__print_hex("); - print_args(args->hex.field); - printf(", "); - print_args(args->hex.size); - printf(")"); - break; - case PRINT_HEX_STR: - printf("__print_hex_str("); - print_args(args->hex.field); - printf(", "); - print_args(args->hex.size); - printf(")"); - break; - case PRINT_INT_ARRAY: - printf("__print_array("); - print_args(args->int_array.field); - printf(", "); - print_args(args->int_array.count); - printf(", "); - print_args(args->int_array.el_size); - printf(")"); - break; - case PRINT_STRING: - case PRINT_BSTRING: - printf("__get_str(%s)", args->string.string); - break; - case PRINT_BITMASK: - printf("__get_bitmask(%s)", args->bitmask.bitmask); - break; - case PRINT_TYPE: - printf("(%s)", args->typecast.type); - print_args(args->typecast.item); - break; - case PRINT_OP: - if (strcmp(args->op.op, ":") == 0) - print_paren = 0; - if (print_paren) - printf("("); - print_args(args->op.left); - printf(" %s ", args->op.op); - print_args(args->op.right); - if (print_paren) - printf(")"); - break; - default: - /* we should warn... */ - return; - } - if (args->next) { - printf("\n"); - print_args(args->next); - } -} - -static void parse_header_field(const char *field, - int *offset, int *size, int mandatory) -{ - unsigned long long save_input_buf_ptr; - unsigned long long save_input_buf_siz; - char *token; - int type; - - save_input_buf_ptr = input_buf_ptr; - save_input_buf_siz = input_buf_siz; - - if (read_expected(EVENT_ITEM, "field") < 0) - return; - if (read_expected(EVENT_OP, ":") < 0) - return; - - /* type */ - if (read_expect_type(EVENT_ITEM, &token) < 0) - goto fail; - free_token(token); - - /* - * If this is not a mandatory field, then test it first. - */ - if (mandatory) { - if (read_expected(EVENT_ITEM, field) < 0) - return; - } else { - if (read_expect_type(EVENT_ITEM, &token) < 0) - goto fail; - if (strcmp(token, field) != 0) - goto discard; - free_token(token); - } - - if (read_expected(EVENT_OP, ";") < 0) - return; - if (read_expected(EVENT_ITEM, "offset") < 0) - return; - if (read_expected(EVENT_OP, ":") < 0) - return; - if (read_expect_type(EVENT_ITEM, &token) < 0) - goto fail; - *offset = atoi(token); - free_token(token); - if (read_expected(EVENT_OP, ";") < 0) - return; - if (read_expected(EVENT_ITEM, "size") < 0) - return; - if (read_expected(EVENT_OP, ":") < 0) - return; - if (read_expect_type(EVENT_ITEM, &token) < 0) - goto fail; - *size = atoi(token); - free_token(token); - if (read_expected(EVENT_OP, ";") < 0) - return; - type = read_token(&token); - if (type != EVENT_NEWLINE) { - /* newer versions of the kernel have a "signed" type */ - if (type != EVENT_ITEM) - goto fail; - - if (strcmp(token, "signed") != 0) - goto fail; - - free_token(token); - - if (read_expected(EVENT_OP, ":") < 0) - return; - - if (read_expect_type(EVENT_ITEM, &token)) - goto fail; - - free_token(token); - if (read_expected(EVENT_OP, ";") < 0) - return; - - if (read_expect_type(EVENT_NEWLINE, &token)) - goto fail; - } - fail: - free_token(token); - return; - - discard: - input_buf_ptr = save_input_buf_ptr; - input_buf_siz = save_input_buf_siz; - *offset = 0; - *size = 0; - free_token(token); -} - -/** - * pevent_parse_header_page - parse the data stored in the header page - * @pevent: the handle to the pevent - * @buf: the buffer storing the header page format string - * @size: the size of @buf - * @long_size: the long size to use if there is no header - * - * This parses the header page format for information on the - * ring buffer used. The @buf should be copied from - * - * /sys/kernel/debug/tracing/events/header_page - */ -int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size, - int long_size) -{ - int ignore; - - if (!size) { - /* - * Old kernels did not have header page info. - * Sorry but we just use what we find here in user space. - */ - pevent->header_page_ts_size = sizeof(long long); - pevent->header_page_size_size = long_size; - pevent->header_page_data_offset = sizeof(long long) + long_size; - pevent->old_format = 1; - return -1; - } - init_input_buf(buf, size); - - parse_header_field("timestamp", &pevent->header_page_ts_offset, - &pevent->header_page_ts_size, 1); - parse_header_field("commit", &pevent->header_page_size_offset, - &pevent->header_page_size_size, 1); - parse_header_field("overwrite", &pevent->header_page_overwrite, - &ignore, 0); - parse_header_field("data", &pevent->header_page_data_offset, - &pevent->header_page_data_size, 1); - - return 0; -} - -static int event_matches(struct event_format *event, - int id, const char *sys_name, - const char *event_name) -{ - if (id >= 0 && id != event->id) - return 0; - - if (event_name && (strcmp(event_name, event->name) != 0)) - return 0; - - if (sys_name && (strcmp(sys_name, event->system) != 0)) - return 0; - - return 1; -} - -static void free_handler(struct event_handler *handle) -{ - free((void *)handle->sys_name); - free((void *)handle->event_name); - free(handle); -} - -static int find_event_handle(struct pevent *pevent, struct event_format *event) -{ - struct event_handler *handle, **next; - - for (next = &pevent->handlers; *next; - next = &(*next)->next) { - handle = *next; - if (event_matches(event, handle->id, - handle->sys_name, - handle->event_name)) - break; - } - - if (!(*next)) - return 0; - - pr_stat("overriding event (%d) %s:%s with new print handler", - event->id, event->system, event->name); - - event->handler = handle->func; - event->context = handle->context; - - *next = handle->next; - free_handler(handle); - - return 1; -} - -/** - * __pevent_parse_format - parse the event format - * @buf: the buffer storing the event format string - * @size: the size of @buf - * @sys: the system the event belongs to - * - * This parses the event format and creates an event structure - * to quickly parse raw data for a given event. - * - * These files currently come from: - * - * /sys/kernel/debug/tracing/events/.../.../format - */ -enum pevent_errno __pevent_parse_format(struct event_format **eventp, - struct pevent *pevent, const char *buf, - unsigned long size, const char *sys) -{ - struct event_format *event; - int ret; - - init_input_buf(buf, size); - - *eventp = event = alloc_event(); - if (!event) - return PEVENT_ERRNO__MEM_ALLOC_FAILED; - - event->name = event_read_name(); - if (!event->name) { - /* Bad event? */ - ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; - goto event_alloc_failed; - } - - if (strcmp(sys, "ftrace") == 0) { - event->flags |= EVENT_FL_ISFTRACE; - - if (strcmp(event->name, "bprint") == 0) - event->flags |= EVENT_FL_ISBPRINT; - } - - event->id = event_read_id(); - if (event->id < 0) { - ret = PEVENT_ERRNO__READ_ID_FAILED; - /* - * This isn't an allocation error actually. - * But as the ID is critical, just bail out. - */ - goto event_alloc_failed; - } - - event->system = strdup(sys); - if (!event->system) { - ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; - goto event_alloc_failed; - } - - /* Add pevent to event so that it can be referenced */ - event->pevent = pevent; - - ret = event_read_format(event); - if (ret < 0) { - ret = PEVENT_ERRNO__READ_FORMAT_FAILED; - goto event_parse_failed; - } - - /* - * If the event has an override, don't print warnings if the event - * print format fails to parse. - */ - if (pevent && find_event_handle(pevent, event)) - show_warning = 0; - - ret = event_read_print(event); - show_warning = 1; - - if (ret < 0) { - ret = PEVENT_ERRNO__READ_PRINT_FAILED; - goto event_parse_failed; - } - - if (!ret && (event->flags & EVENT_FL_ISFTRACE)) { - struct format_field *field; - struct print_arg *arg, **list; - - /* old ftrace had no args */ - list = &event->print_fmt.args; - for (field = event->format.fields; field; field = field->next) { - arg = alloc_arg(); - if (!arg) { - event->flags |= EVENT_FL_FAILED; - return PEVENT_ERRNO__OLD_FTRACE_ARG_FAILED; - } - arg->type = PRINT_FIELD; - arg->field.name = strdup(field->name); - if (!arg->field.name) { - event->flags |= EVENT_FL_FAILED; - free_arg(arg); - return PEVENT_ERRNO__OLD_FTRACE_ARG_FAILED; - } - arg->field.field = field; - *list = arg; - list = &arg->next; - } - return 0; - } - - return 0; - - event_parse_failed: - event->flags |= EVENT_FL_FAILED; - return ret; - - event_alloc_failed: - free(event->system); - free(event->name); - free(event); - *eventp = NULL; - return ret; -} - -static enum pevent_errno -__pevent_parse_event(struct pevent *pevent, - struct event_format **eventp, - const char *buf, unsigned long size, - const char *sys) -{ - int ret = __pevent_parse_format(eventp, pevent, buf, size, sys); - struct event_format *event = *eventp; - - if (event == NULL) - return ret; - - if (pevent && add_event(pevent, event)) { - ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; - goto event_add_failed; - } - -#define PRINT_ARGS 0 - if (PRINT_ARGS && event->print_fmt.args) - print_args(event->print_fmt.args); - - return 0; - -event_add_failed: - pevent_free_format(event); - return ret; -} - -/** - * pevent_parse_format - parse the event format - * @pevent: the handle to the pevent - * @eventp: returned format - * @buf: the buffer storing the event format string - * @size: the size of @buf - * @sys: the system the event belongs to - * - * This parses the event format and creates an event structure - * to quickly parse raw data for a given event. - * - * These files currently come from: - * - * /sys/kernel/debug/tracing/events/.../.../format - */ -enum pevent_errno pevent_parse_format(struct pevent *pevent, - struct event_format **eventp, - const char *buf, - unsigned long size, const char *sys) -{ - return __pevent_parse_event(pevent, eventp, buf, size, sys); -} - -/** - * pevent_parse_event - parse the event format - * @pevent: the handle to the pevent - * @buf: the buffer storing the event format string - * @size: the size of @buf - * @sys: the system the event belongs to - * - * This parses the event format and creates an event structure - * to quickly parse raw data for a given event. - * - * These files currently come from: - * - * /sys/kernel/debug/tracing/events/.../.../format - */ -enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf, - unsigned long size, const char *sys) -{ - struct event_format *event = NULL; - return __pevent_parse_event(pevent, &event, buf, size, sys); -} - -#undef _PE -#define _PE(code, str) str -static const char * const pevent_error_str[] = { - PEVENT_ERRORS -}; -#undef _PE - -int pevent_strerror(struct pevent *pevent __maybe_unused, - enum pevent_errno errnum, char *buf, size_t buflen) -{ - int idx; - const char *msg; - - if (errnum >= 0) { - str_error_r(errnum, buf, buflen); - return 0; - } - - if (errnum <= __PEVENT_ERRNO__START || - errnum >= __PEVENT_ERRNO__END) - return -1; - - idx = errnum - __PEVENT_ERRNO__START - 1; - msg = pevent_error_str[idx]; - snprintf(buf, buflen, "%s", msg); - - return 0; -} - -int get_field_val(struct trace_seq *s, struct format_field *field, - const char *name, struct pevent_record *record, - unsigned long long *val, int err) -{ - if (!field) { - if (err) - trace_seq_printf(s, "<CANT FIND FIELD %s>", name); - return -1; - } - - if (pevent_read_number_field(field, record->data, val)) { - if (err) - trace_seq_printf(s, " %s=INVALID", name); - return -1; - } - - return 0; -} - -/** - * pevent_get_field_raw - return the raw pointer into the data field - * @s: The seq to print to on error - * @event: the event that the field is for - * @name: The name of the field - * @record: The record with the field name. - * @len: place to store the field length. - * @err: print default error if failed. - * - * Returns a pointer into record->data of the field and places - * the length of the field in @len. - * - * On failure, it returns NULL. - */ -void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event, - const char *name, struct pevent_record *record, - int *len, int err) -{ - struct format_field *field; - void *data = record->data; - unsigned offset; - int dummy; - - if (!event) - return NULL; - - field = pevent_find_field(event, name); - - if (!field) { - if (err) - trace_seq_printf(s, "<CANT FIND FIELD %s>", name); - return NULL; - } - - /* Allow @len to be NULL */ - if (!len) - len = &dummy; - - offset = field->offset; - if (field->flags & FIELD_IS_DYNAMIC) { - offset = pevent_read_number(event->pevent, - data + offset, field->size); - *len = offset >> 16; - offset &= 0xffff; - } else - *len = field->size; - - return data + offset; -} - -/** - * pevent_get_field_val - find a field and return its value - * @s: The seq to print to on error - * @event: the event that the field is for - * @name: The name of the field - * @record: The record with the field name. - * @val: place to store the value of the field. - * @err: print default error if failed. - * - * Returns 0 on success -1 on field not found. - */ -int pevent_get_field_val(struct trace_seq *s, struct event_format *event, - const char *name, struct pevent_record *record, - unsigned long long *val, int err) -{ - struct format_field *field; - - if (!event) - return -1; - - field = pevent_find_field(event, name); - - return get_field_val(s, field, name, record, val, err); -} - -/** - * pevent_get_common_field_val - find a common field and return its value - * @s: The seq to print to on error - * @event: the event that the field is for - * @name: The name of the field - * @record: The record with the field name. - * @val: place to store the value of the field. - * @err: print default error if failed. - * - * Returns 0 on success -1 on field not found. - */ -int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event, - const char *name, struct pevent_record *record, - unsigned long long *val, int err) -{ - struct format_field *field; - - if (!event) - return -1; - - field = pevent_find_common_field(event, name); - - return get_field_val(s, field, name, record, val, err); -} - -/** - * pevent_get_any_field_val - find a any field and return its value - * @s: The seq to print to on error - * @event: the event that the field is for - * @name: The name of the field - * @record: The record with the field name. - * @val: place to store the value of the field. - * @err: print default error if failed. - * - * Returns 0 on success -1 on field not found. - */ -int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event, - const char *name, struct pevent_record *record, - unsigned long long *val, int err) -{ - struct format_field *field; - - if (!event) - return -1; - - field = pevent_find_any_field(event, name); - - return get_field_val(s, field, name, record, val, err); -} - -/** - * pevent_print_num_field - print a field and a format - * @s: The seq to print to - * @fmt: The printf format to print the field with. - * @event: the event that the field is for - * @name: The name of the field - * @record: The record with the field name. - * @err: print default error if failed. - * - * Returns: 0 on success, -1 field not found, or 1 if buffer is full. - */ -int pevent_print_num_field(struct trace_seq *s, const char *fmt, - struct event_format *event, const char *name, - struct pevent_record *record, int err) -{ - struct format_field *field = pevent_find_field(event, name); - unsigned long long val; - - if (!field) - goto failed; - - if (pevent_read_number_field(field, record->data, &val)) - goto failed; - - return trace_seq_printf(s, fmt, val); - - failed: - if (err) - trace_seq_printf(s, "CAN'T FIND FIELD \"%s\"", name); - return -1; -} - -/** - * pevent_print_func_field - print a field and a format for function pointers - * @s: The seq to print to - * @fmt: The printf format to print the field with. - * @event: the event that the field is for - * @name: The name of the field - * @record: The record with the field name. - * @err: print default error if failed. - * - * Returns: 0 on success, -1 field not found, or 1 if buffer is full. - */ -int pevent_print_func_field(struct trace_seq *s, const char *fmt, - struct event_format *event, const char *name, - struct pevent_record *record, int err) -{ - struct format_field *field = pevent_find_field(event, name); - struct pevent *pevent = event->pevent; - unsigned long long val; - struct func_map *func; - char tmp[128]; - - if (!field) - goto failed; - - if (pevent_read_number_field(field, record->data, &val)) - goto failed; - - func = find_func(pevent, val); - - if (func) - snprintf(tmp, 128, "%s/0x%llx", func->func, func->addr - val); - else - sprintf(tmp, "0x%08llx", val); - - return trace_seq_printf(s, fmt, tmp); - - failed: - if (err) - trace_seq_printf(s, "CAN'T FIND FIELD \"%s\"", name); - return -1; -} - -static void free_func_handle(struct pevent_function_handler *func) -{ - struct pevent_func_params *params; - - free(func->name); - - while (func->params) { - params = func->params; - func->params = params->next; - free(params); - } - - free(func); -} - -/** - * pevent_register_print_function - register a helper function - * @pevent: the handle to the pevent - * @func: the function to process the helper function - * @ret_type: the return type of the helper function - * @name: the name of the helper function - * @parameters: A list of enum pevent_func_arg_type - * - * Some events may have helper functions in the print format arguments. - * This allows a plugin to dynamically create a way to process one - * of these functions. - * - * The @parameters is a variable list of pevent_func_arg_type enums that - * must end with PEVENT_FUNC_ARG_VOID. - */ -int pevent_register_print_function(struct pevent *pevent, - pevent_func_handler func, - enum pevent_func_arg_type ret_type, - char *name, ...) -{ - struct pevent_function_handler *func_handle; - struct pevent_func_params **next_param; - struct pevent_func_params *param; - enum pevent_func_arg_type type; - va_list ap; - int ret; - - func_handle = find_func_handler(pevent, name); - if (func_handle) { - /* - * This is most like caused by the users own - * plugins updating the function. This overrides the - * system defaults. - */ - pr_stat("override of function helper '%s'", name); - remove_func_handler(pevent, name); - } - - func_handle = calloc(1, sizeof(*func_handle)); - if (!func_handle) { - do_warning("Failed to allocate function handler"); - return PEVENT_ERRNO__MEM_ALLOC_FAILED; - } - - func_handle->ret_type = ret_type; - func_handle->name = strdup(name); - func_handle->func = func; - if (!func_handle->name) { - do_warning("Failed to allocate function name"); - free(func_handle); - return PEVENT_ERRNO__MEM_ALLOC_FAILED; - } - - next_param = &(func_handle->params); - va_start(ap, name); - for (;;) { - type = va_arg(ap, enum pevent_func_arg_type); - if (type == PEVENT_FUNC_ARG_VOID) - break; - - if (type >= PEVENT_FUNC_ARG_MAX_TYPES) { - do_warning("Invalid argument type %d", type); - ret = PEVENT_ERRNO__INVALID_ARG_TYPE; - goto out_free; - } - - param = malloc(sizeof(*param)); - if (!param) { - do_warning("Failed to allocate function param"); - ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; - goto out_free; - } - param->type = type; - param->next = NULL; - - *next_param = param; - next_param = &(param->next); - - func_handle->nr_args++; - } - va_end(ap); - - func_handle->next = pevent->func_handlers; - pevent->func_handlers = func_handle; - - return 0; - out_free: - va_end(ap); - free_func_handle(func_handle); - return ret; -} - -/** - * pevent_unregister_print_function - unregister a helper function - * @pevent: the handle to the pevent - * @func: the function to process the helper function - * @name: the name of the helper function - * - * This function removes existing print handler for function @name. - * - * Returns 0 if the handler was removed successully, -1 otherwise. - */ -int pevent_unregister_print_function(struct pevent *pevent, - pevent_func_handler func, char *name) -{ - struct pevent_function_handler *func_handle; - - func_handle = find_func_handler(pevent, name); - if (func_handle && func_handle->func == func) { - remove_func_handler(pevent, name); - return 0; - } - return -1; -} - -static struct event_format *pevent_search_event(struct pevent *pevent, int id, - const char *sys_name, - const char *event_name) -{ - struct event_format *event; - - if (id >= 0) { - /* search by id */ - event = pevent_find_event(pevent, id); - if (!event) - return NULL; - if (event_name && (strcmp(event_name, event->name) != 0)) - return NULL; - if (sys_name && (strcmp(sys_name, event->system) != 0)) - return NULL; - } else { - event = pevent_find_event_by_name(pevent, sys_name, event_name); - if (!event) - return NULL; - } - return event; -} - -/** - * pevent_register_event_handler - register a way to parse an event - * @pevent: the handle to the pevent - * @id: the id of the event to register - * @sys_name: the system name the event belongs to - * @event_name: the name of the event - * @func: the function to call to parse the event information - * @context: the data to be passed to @func - * - * This function allows a developer to override the parsing of - * a given event. If for some reason the default print format - * is not sufficient, this function will register a function - * for an event to be used to parse the data instead. - * - * If @id is >= 0, then it is used to find the event. - * else @sys_name and @event_name are used. - */ -int pevent_register_event_handler(struct pevent *pevent, int id, - const char *sys_name, const char *event_name, - pevent_event_handler_func func, void *context) -{ - struct event_format *event; - struct event_handler *handle; - - event = pevent_search_event(pevent, id, sys_name, event_name); - if (event == NULL) - goto not_found; - - pr_stat("overriding event (%d) %s:%s with new print handler", - event->id, event->system, event->name); - - event->handler = func; - event->context = context; - return 0; - - not_found: - /* Save for later use. */ - handle = calloc(1, sizeof(*handle)); - if (!handle) { - do_warning("Failed to allocate event handler"); - return PEVENT_ERRNO__MEM_ALLOC_FAILED; - } - - handle->id = id; - if (event_name) - handle->event_name = strdup(event_name); - if (sys_name) - handle->sys_name = strdup(sys_name); - - if ((event_name && !handle->event_name) || - (sys_name && !handle->sys_name)) { - do_warning("Failed to allocate event/sys name"); - free((void *)handle->event_name); - free((void *)handle->sys_name); - free(handle); - return PEVENT_ERRNO__MEM_ALLOC_FAILED; - } - - handle->func = func; - handle->next = pevent->handlers; - pevent->handlers = handle; - handle->context = context; - - return -1; -} - -static int handle_matches(struct event_handler *handler, int id, - const char *sys_name, const char *event_name, - pevent_event_handler_func func, void *context) -{ - if (id >= 0 && id != handler->id) - return 0; - - if (event_name && (strcmp(event_name, handler->event_name) != 0)) - return 0; - - if (sys_name && (strcmp(sys_name, handler->sys_name) != 0)) - return 0; - - if (func != handler->func || context != handler->context) - return 0; - - return 1; -} - -/** - * pevent_unregister_event_handler - unregister an existing event handler - * @pevent: the handle to the pevent - * @id: the id of the event to unregister - * @sys_name: the system name the handler belongs to - * @event_name: the name of the event handler - * @func: the function to call to parse the event information - * @context: the data to be passed to @func - * - * This function removes existing event handler (parser). - * - * If @id is >= 0, then it is used to find the event. - * else @sys_name and @event_name are used. - * - * Returns 0 if handler was removed successfully, -1 if event was not found. - */ -int pevent_unregister_event_handler(struct pevent *pevent, int id, - const char *sys_name, const char *event_name, - pevent_event_handler_func func, void *context) -{ - struct event_format *event; - struct event_handler *handle; - struct event_handler **next; - - event = pevent_search_event(pevent, id, sys_name, event_name); - if (event == NULL) - goto not_found; - - if (event->handler == func && event->context == context) { - pr_stat("removing override handler for event (%d) %s:%s. Going back to default handler.", - event->id, event->system, event->name); - - event->handler = NULL; - event->context = NULL; - return 0; - } - -not_found: - for (next = &pevent->handlers; *next; next = &(*next)->next) { - handle = *next; - if (handle_matches(handle, id, sys_name, event_name, - func, context)) - break; - } - - if (!(*next)) - return -1; - - *next = handle->next; - free_handler(handle); - - return 0; -} - -/** - * pevent_alloc - create a pevent handle - */ -struct pevent *pevent_alloc(void) -{ - struct pevent *pevent = calloc(1, sizeof(*pevent)); - - if (pevent) - pevent->ref_count = 1; - - return pevent; -} - -void pevent_ref(struct pevent *pevent) -{ - pevent->ref_count++; -} - -void pevent_free_format_field(struct format_field *field) -{ - free(field->type); - if (field->alias != field->name) - free(field->alias); - free(field->name); - free(field); -} - -static void free_format_fields(struct format_field *field) -{ - struct format_field *next; - - while (field) { - next = field->next; - pevent_free_format_field(field); - field = next; - } -} - -static void free_formats(struct format *format) -{ - free_format_fields(format->common_fields); - free_format_fields(format->fields); -} - -void pevent_free_format(struct event_format *event) -{ - free(event->name); - free(event->system); - - free_formats(&event->format); - - free(event->print_fmt.format); - free_args(event->print_fmt.args); - - free(event); -} - -/** - * pevent_free - free a pevent handle - * @pevent: the pevent handle to free - */ -void pevent_free(struct pevent *pevent) -{ - struct cmdline_list *cmdlist, *cmdnext; - struct func_list *funclist, *funcnext; - struct printk_list *printklist, *printknext; - struct pevent_function_handler *func_handler; - struct event_handler *handle; - int i; - - if (!pevent) - return; - - cmdlist = pevent->cmdlist; - funclist = pevent->funclist; - printklist = pevent->printklist; - - pevent->ref_count--; - if (pevent->ref_count) - return; - - if (pevent->cmdlines) { - for (i = 0; i < pevent->cmdline_count; i++) - free(pevent->cmdlines[i].comm); - free(pevent->cmdlines); - } - - while (cmdlist) { - cmdnext = cmdlist->next; - free(cmdlist->comm); - free(cmdlist); - cmdlist = cmdnext; - } - - if (pevent->func_map) { - for (i = 0; i < (int)pevent->func_count; i++) { - free(pevent->func_map[i].func); - free(pevent->func_map[i].mod); - } - free(pevent->func_map); - } - - while (funclist) { - funcnext = funclist->next; - free(funclist->func); - free(funclist->mod); - free(funclist); - funclist = funcnext; - } - - while (pevent->func_handlers) { - func_handler = pevent->func_handlers; - pevent->func_handlers = func_handler->next; - free_func_handle(func_handler); - } - - if (pevent->printk_map) { - for (i = 0; i < (int)pevent->printk_count; i++) - free(pevent->printk_map[i].printk); - free(pevent->printk_map); - } - - while (printklist) { - printknext = printklist->next; - free(printklist->printk); - free(printklist); - printklist = printknext; - } - - for (i = 0; i < pevent->nr_events; i++) - pevent_free_format(pevent->events[i]); - - while (pevent->handlers) { - handle = pevent->handlers; - pevent->handlers = handle->next; - free_handler(handle); - } - - free(pevent->trace_clock); - free(pevent->events); - free(pevent->sort_events); - free(pevent->func_resolver); - - free(pevent); -} - -void pevent_unref(struct pevent *pevent) -{ - pevent_free(pevent); -} diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h deleted file mode 100644 index 0c03538df74c..000000000000 --- a/tools/lib/traceevent/event-parse.h +++ /dev/null @@ -1,991 +0,0 @@ -/* - * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; - * version 2.1 of the License (not later!) - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this program; if not, see <http://www.gnu.org/licenses> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ -#ifndef _PARSE_EVENTS_H -#define _PARSE_EVENTS_H - -#include <stdbool.h> -#include <stdarg.h> -#include <stdio.h> -#include <regex.h> -#include <string.h> - -#ifndef __maybe_unused -#define __maybe_unused __attribute__((unused)) -#endif - -/* ----------------------- trace_seq ----------------------- */ - - -#ifndef TRACE_SEQ_BUF_SIZE -#define TRACE_SEQ_BUF_SIZE 4096 -#endif - -#ifndef DEBUG_RECORD -#define DEBUG_RECORD 0 -#endif - -struct pevent_record { - unsigned long long ts; - unsigned long long offset; - long long missed_events; /* buffer dropped events before */ - int record_size; /* size of binary record */ - int size; /* size of data */ - void *data; - int cpu; - int ref_count; - int locked; /* Do not free, even if ref_count is zero */ - void *priv; -#if DEBUG_RECORD - struct pevent_record *prev; - struct pevent_record *next; - long alloc_addr; -#endif -}; - -enum trace_seq_fail { - TRACE_SEQ__GOOD, - TRACE_SEQ__BUFFER_POISONED, - TRACE_SEQ__MEM_ALLOC_FAILED, -}; - -/* - * Trace sequences are used to allow a function to call several other functions - * to create a string of data to use (up to a max of PAGE_SIZE). - */ - -struct trace_seq { - char *buffer; - unsigned int buffer_size; - unsigned int len; - unsigned int readpos; - enum trace_seq_fail state; -}; - -void trace_seq_init(struct trace_seq *s); -void trace_seq_reset(struct trace_seq *s); -void trace_seq_destroy(struct trace_seq *s); - -extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); -extern int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args) - __attribute__ ((format (printf, 2, 0))); - -extern int trace_seq_puts(struct trace_seq *s, const char *str); -extern int trace_seq_putc(struct trace_seq *s, unsigned char c); - -extern void trace_seq_terminate(struct trace_seq *s); - -extern int trace_seq_do_fprintf(struct trace_seq *s, FILE *fp); -extern int trace_seq_do_printf(struct trace_seq *s); - - -/* ----------------------- pevent ----------------------- */ - -struct pevent; -struct event_format; - -typedef int (*pevent_event_handler_func)(struct trace_seq *s, - struct pevent_record *record, - struct event_format *event, - void *context); - -typedef int (*pevent_plugin_load_func)(struct pevent *pevent); -typedef int (*pevent_plugin_unload_func)(struct pevent *pevent); - -struct pevent_plugin_option { - struct pevent_plugin_option *next; - void *handle; - char *file; - char *name; - char *plugin_alias; - char *description; - const char *value; - void *priv; - int set; -}; - -/* - * Plugin hooks that can be called: - * - * PEVENT_PLUGIN_LOADER: (required) - * The function name to initialized the plugin. - * - * int PEVENT_PLUGIN_LOADER(struct pevent *pevent) - * - * PEVENT_PLUGIN_UNLOADER: (optional) - * The function called just before unloading - * - * int PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) - * - * PEVENT_PLUGIN_OPTIONS: (optional) - * Plugin options that can be set before loading - * - * struct pevent_plugin_option PEVENT_PLUGIN_OPTIONS[] = { - * { - * .name = "option-name", - * .plugin_alias = "override-file-name", (optional) - * .description = "description of option to show users", - * }, - * { - * .name = NULL, - * }, - * }; - * - * Array must end with .name = NULL; - * - * - * .plugin_alias is used to give a shorter name to access - * the vairable. Useful if a plugin handles more than one event. - * - * If .value is not set, then it is considered a boolean and only - * .set will be processed. If .value is defined, then it is considered - * a string option and .set will be ignored. - * - * PEVENT_PLUGIN_ALIAS: (optional) - * The name to use for finding options (uses filename if not defined) - */ -#define PEVENT_PLUGIN_LOADER pevent_plugin_loader -#define PEVENT_PLUGIN_UNLOADER pevent_plugin_unloader -#define PEVENT_PLUGIN_OPTIONS pevent_plugin_options -#define PEVENT_PLUGIN_ALIAS pevent_plugin_alias -#define _MAKE_STR(x) #x -#define MAKE_STR(x) _MAKE_STR(x) -#define PEVENT_PLUGIN_LOADER_NAME MAKE_STR(PEVENT_PLUGIN_LOADER) -#define PEVENT_PLUGIN_UNLOADER_NAME MAKE_STR(PEVENT_PLUGIN_UNLOADER) -#define PEVENT_PLUGIN_OPTIONS_NAME MAKE_STR(PEVENT_PLUGIN_OPTIONS) -#define PEVENT_PLUGIN_ALIAS_NAME MAKE_STR(PEVENT_PLUGIN_ALIAS) - -enum format_flags { - FIELD_IS_ARRAY = 1, - FIELD_IS_POINTER = 2, - FIELD_IS_SIGNED = 4, - FIELD_IS_STRING = 8, - FIELD_IS_DYNAMIC = 16, - FIELD_IS_LONG = 32, - FIELD_IS_FLAG = 64, - FIELD_IS_SYMBOLIC = 128, -}; - -struct format_field { - struct format_field *next; - struct event_format *event; - char *type; - char *name; - char *alias; - int offset; - int size; - unsigned int arraylen; - unsigned int elementsize; - unsigned long flags; -}; - -struct format { - int nr_common; - int nr_fields; - struct format_field *common_fields; - struct format_field *fields; -}; - -struct print_arg_atom { - char *atom; -}; - -struct print_arg_string { - char *string; - int offset; -}; - -struct print_arg_bitmask { - char *bitmask; - int offset; -}; - -struct print_arg_field { - char *name; - struct format_field *field; -}; - -struct print_flag_sym { - struct print_flag_sym *next; - char *value; - char *str; -}; - -struct print_arg_typecast { - char *type; - struct print_arg *item; -}; - -struct print_arg_flags { - struct print_arg *field; - char *delim; - struct print_flag_sym *flags; -}; - -struct print_arg_symbol { - struct print_arg *field; - struct print_flag_sym *symbols; -}; - -struct print_arg_hex { - struct print_arg *field; - struct print_arg *size; -}; - -struct print_arg_int_array { - struct print_arg *field; - struct print_arg *count; - struct print_arg *el_size; -}; - -struct print_arg_dynarray { - struct format_field *field; - struct print_arg *index; -}; - -struct print_arg; - -struct print_arg_op { - char *op; - int prio; - struct print_arg *left; - struct print_arg *right; -}; - -struct pevent_function_handler; - -struct print_arg_func { - struct pevent_function_handler *func; - struct print_arg *args; -}; - -enum print_arg_type { - PRINT_NULL, - PRINT_ATOM, - PRINT_FIELD, - PRINT_FLAGS, - PRINT_SYMBOL, - PRINT_HEX, - PRINT_INT_ARRAY, - PRINT_TYPE, - PRINT_STRING, - PRINT_BSTRING, - PRINT_DYNAMIC_ARRAY, - PRINT_OP, - PRINT_FUNC, - PRINT_BITMASK, - PRINT_DYNAMIC_ARRAY_LEN, - PRINT_HEX_STR, -}; - -struct print_arg { - struct print_arg *next; - enum print_arg_type type; - union { - struct print_arg_atom atom; - struct print_arg_field field; - struct print_arg_typecast typecast; - struct print_arg_flags flags; - struct print_arg_symbol symbol; - struct print_arg_hex hex; - struct print_arg_int_array int_array; - struct print_arg_func func; - struct print_arg_string string; - struct print_arg_bitmask bitmask; - struct print_arg_op op; - struct print_arg_dynarray dynarray; - }; -}; - -struct print_fmt { - char *format; - struct print_arg *args; -}; - -struct event_format { - struct pevent *pevent; - char *name; - int id; - int flags; - struct format format; - struct print_fmt print_fmt; - char *system; - pevent_event_handler_func handler; - void *context; -}; - -enum { - EVENT_FL_ISFTRACE = 0x01, - EVENT_FL_ISPRINT = 0x02, - EVENT_FL_ISBPRINT = 0x04, - EVENT_FL_ISFUNCENT = 0x10, - EVENT_FL_ISFUNCRET = 0x20, - EVENT_FL_NOHANDLE = 0x40, - EVENT_FL_PRINTRAW = 0x80, - - EVENT_FL_FAILED = 0x80000000 -}; - -enum event_sort_type { - EVENT_SORT_ID, - EVENT_SORT_NAME, - EVENT_SORT_SYSTEM, -}; - -enum event_type { - EVENT_ERROR, - EVENT_NONE, - EVENT_SPACE, - EVENT_NEWLINE, - EVENT_OP, - EVENT_DELIM, - EVENT_ITEM, - EVENT_DQUOTE, - EVENT_SQUOTE, -}; - -typedef unsigned long long (*pevent_func_handler)(struct trace_seq *s, - unsigned long long *args); - -enum pevent_func_arg_type { - PEVENT_FUNC_ARG_VOID, - PEVENT_FUNC_ARG_INT, - PEVENT_FUNC_ARG_LONG, - PEVENT_FUNC_ARG_STRING, - PEVENT_FUNC_ARG_PTR, - PEVENT_FUNC_ARG_MAX_TYPES -}; - -enum pevent_flag { - PEVENT_NSEC_OUTPUT = 1, /* output in NSECS */ - PEVENT_DISABLE_SYS_PLUGINS = 1 << 1, - PEVENT_DISABLE_PLUGINS = 1 << 2, -}; - -#define PEVENT_ERRORS \ - _PE(MEM_ALLOC_FAILED, "failed to allocate memory"), \ - _PE(PARSE_EVENT_FAILED, "failed to parse event"), \ - _PE(READ_ID_FAILED, "failed to read event id"), \ - _PE(READ_FORMAT_FAILED, "failed to read event format"), \ - _PE(READ_PRINT_FAILED, "failed to read event print fmt"), \ - _PE(OLD_FTRACE_ARG_FAILED,"failed to allocate field name for ftrace"),\ - _PE(INVALID_ARG_TYPE, "invalid argument type"), \ - _PE(INVALID_EXP_TYPE, "invalid expression type"), \ - _PE(INVALID_OP_TYPE, "invalid operator type"), \ - _PE(INVALID_EVENT_NAME, "invalid event name"), \ - _PE(EVENT_NOT_FOUND, "no event found"), \ - _PE(SYNTAX_ERROR, "syntax error"), \ - _PE(ILLEGAL_RVALUE, "illegal rvalue"), \ - _PE(ILLEGAL_LVALUE, "illegal lvalue for string comparison"), \ - _PE(INVALID_REGEX, "regex did not compute"), \ - _PE(ILLEGAL_STRING_CMP, "illegal comparison for string"), \ - _PE(ILLEGAL_INTEGER_CMP,"illegal comparison for integer"), \ - _PE(REPARENT_NOT_OP, "cannot reparent other than OP"), \ - _PE(REPARENT_FAILED, "failed to reparent filter OP"), \ - _PE(BAD_FILTER_ARG, "bad arg in filter tree"), \ - _PE(UNEXPECTED_TYPE, "unexpected type (not a value)"), \ - _PE(ILLEGAL_TOKEN, "illegal token"), \ - _PE(INVALID_PAREN, "open parenthesis cannot come here"), \ - _PE(UNBALANCED_PAREN, "unbalanced number of parenthesis"), \ - _PE(UNKNOWN_TOKEN, "unknown token"), \ - _PE(FILTER_NOT_FOUND, "no filter found"), \ - _PE(NOT_A_NUMBER, "must have number field"), \ - _PE(NO_FILTER, "no filters exists"), \ - _PE(FILTER_MISS, "record does not match to filter") - -#undef _PE -#define _PE(__code, __str) PEVENT_ERRNO__ ## __code -enum pevent_errno { - PEVENT_ERRNO__SUCCESS = 0, - PEVENT_ERRNO__FILTER_MATCH = PEVENT_ERRNO__SUCCESS, - - /* - * Choose an arbitrary negative big number not to clash with standard - * errno since SUS requires the errno has distinct positive values. - * See 'Issue 6' in the link below. - * - * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html - */ - __PEVENT_ERRNO__START = -100000, - - PEVENT_ERRORS, - - __PEVENT_ERRNO__END, -}; -#undef _PE - -struct plugin_list; - -#define INVALID_PLUGIN_LIST_OPTION ((char **)((unsigned long)-1)) - -struct plugin_list *traceevent_load_plugins(struct pevent *pevent); -void traceevent_unload_plugins(struct plugin_list *plugin_list, - struct pevent *pevent); -char **traceevent_plugin_list_options(void); -void traceevent_plugin_free_options_list(char **list); -int traceevent_plugin_add_options(const char *name, - struct pevent_plugin_option *options); -void traceevent_plugin_remove_options(struct pevent_plugin_option *options); -void traceevent_print_plugins(struct trace_seq *s, - const char *prefix, const char *suffix, - const struct plugin_list *list); - -struct cmdline; -struct cmdline_list; -struct func_map; -struct func_list; -struct event_handler; -struct func_resolver; - -typedef char *(pevent_func_resolver_t)(void *priv, - unsigned long long *addrp, char **modp); - -struct pevent { - int ref_count; - - int header_page_ts_offset; - int header_page_ts_size; - int header_page_size_offset; - int header_page_size_size; - int header_page_data_offset; - int header_page_data_size; - int header_page_overwrite; - - int file_bigendian; - int host_bigendian; - - int latency_format; - - int old_format; - - int cpus; - int long_size; - int page_size; - - struct cmdline *cmdlines; - struct cmdline_list *cmdlist; - int cmdline_count; - - struct func_map *func_map; - struct func_resolver *func_resolver; - struct func_list *funclist; - unsigned int func_count; - - struct printk_map *printk_map; - struct printk_list *printklist; - unsigned int printk_count; - - - struct event_format **events; - int nr_events; - struct event_format **sort_events; - enum event_sort_type last_type; - - int type_offset; - int type_size; - - int pid_offset; - int pid_size; - - int pc_offset; - int pc_size; - - int flags_offset; - int flags_size; - - int ld_offset; - int ld_size; - - int print_raw; - - int test_filters; - - int flags; - - struct format_field *bprint_ip_field; - struct format_field *bprint_fmt_field; - struct format_field *bprint_buf_field; - - struct event_handler *handlers; - struct pevent_function_handler *func_handlers; - - /* cache */ - struct event_format *last_event; - - char *trace_clock; -}; - -static inline void pevent_set_flag(struct pevent *pevent, int flag) -{ - pevent->flags |= flag; -} - -static inline unsigned short -__data2host2(struct pevent *pevent, unsigned short data) -{ - unsigned short swap; - - if (pevent->host_bigendian == pevent->file_bigendian) - return data; - - swap = ((data & 0xffULL) << 8) | - ((data & (0xffULL << 8)) >> 8); - - return swap; -} - -static inline unsigned int -__data2host4(struct pevent *pevent, unsigned int data) -{ - unsigned int swap; - - if (pevent->host_bigendian == pevent->file_bigendian) - return data; - - swap = ((data & 0xffULL) << 24) | - ((data & (0xffULL << 8)) << 8) | - ((data & (0xffULL << 16)) >> 8) | - ((data & (0xffULL << 24)) >> 24); - - return swap; -} - -static inline unsigned long long -__data2host8(struct pevent *pevent, unsigned long long data) -{ - unsigned long long swap; - - if (pevent->host_bigendian == pevent->file_bigendian) - return data; - - swap = ((data & 0xffULL) << 56) | - ((data & (0xffULL << 8)) << 40) | - ((data & (0xffULL << 16)) << 24) | - ((data & (0xffULL << 24)) << 8) | - ((data & (0xffULL << 32)) >> 8) | - ((data & (0xffULL << 40)) >> 24) | - ((data & (0xffULL << 48)) >> 40) | - ((data & (0xffULL << 56)) >> 56); - - return swap; -} - -#define data2host2(pevent, ptr) __data2host2(pevent, *(unsigned short *)(ptr)) -#define data2host4(pevent, ptr) __data2host4(pevent, *(unsigned int *)(ptr)) -#define data2host8(pevent, ptr) \ -({ \ - unsigned long long __val; \ - \ - memcpy(&__val, (ptr), sizeof(unsigned long long)); \ - __data2host8(pevent, __val); \ -}) - -static inline int traceevent_host_bigendian(void) -{ - unsigned char str[] = { 0x1, 0x2, 0x3, 0x4 }; - unsigned int val; - - memcpy(&val, str, 4); - return val == 0x01020304; -} - -/* taken from kernel/trace/trace.h */ -enum trace_flag_type { - TRACE_FLAG_IRQS_OFF = 0x01, - TRACE_FLAG_IRQS_NOSUPPORT = 0x02, - TRACE_FLAG_NEED_RESCHED = 0x04, - TRACE_FLAG_HARDIRQ = 0x08, - TRACE_FLAG_SOFTIRQ = 0x10, -}; - -int pevent_set_function_resolver(struct pevent *pevent, - pevent_func_resolver_t *func, void *priv); -void pevent_reset_function_resolver(struct pevent *pevent); -int pevent_register_comm(struct pevent *pevent, const char *comm, int pid); -int pevent_register_trace_clock(struct pevent *pevent, const char *trace_clock); -int pevent_register_function(struct pevent *pevent, char *name, - unsigned long long addr, char *mod); -int pevent_register_print_string(struct pevent *pevent, const char *fmt, - unsigned long long addr); -int pevent_pid_is_registered(struct pevent *pevent, int pid); - -void pevent_print_event_task(struct pevent *pevent, struct trace_seq *s, - struct event_format *event, - struct pevent_record *record); -void pevent_print_event_time(struct pevent *pevent, struct trace_seq *s, - struct event_format *event, - struct pevent_record *record, - bool use_trace_clock); -void pevent_print_event_data(struct pevent *pevent, struct trace_seq *s, - struct event_format *event, - struct pevent_record *record); -void pevent_print_event(struct pevent *pevent, struct trace_seq *s, - struct pevent_record *record, bool use_trace_clock); - -int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size, - int long_size); - -enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf, - unsigned long size, const char *sys); -enum pevent_errno pevent_parse_format(struct pevent *pevent, - struct event_format **eventp, - const char *buf, - unsigned long size, const char *sys); -void pevent_free_format(struct event_format *event); -void pevent_free_format_field(struct format_field *field); - -void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event, - const char *name, struct pevent_record *record, - int *len, int err); - -int pevent_get_field_val(struct trace_seq *s, struct event_format *event, - const char *name, struct pevent_record *record, - unsigned long long *val, int err); -int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event, - const char *name, struct pevent_record *record, - unsigned long long *val, int err); -int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event, - const char *name, struct pevent_record *record, - unsigned long long *val, int err); - -int pevent_print_num_field(struct trace_seq *s, const char *fmt, - struct event_format *event, const char *name, - struct pevent_record *record, int err); - -int pevent_print_func_field(struct trace_seq *s, const char *fmt, - struct event_format *event, const char *name, - struct pevent_record *record, int err); - -int pevent_register_event_handler(struct pevent *pevent, int id, - const char *sys_name, const char *event_name, - pevent_event_handler_func func, void *context); -int pevent_unregister_event_handler(struct pevent *pevent, int id, - const char *sys_name, const char *event_name, - pevent_event_handler_func func, void *context); -int pevent_register_print_function(struct pevent *pevent, - pevent_func_handler func, - enum pevent_func_arg_type ret_type, - char *name, ...); -int pevent_unregister_print_function(struct pevent *pevent, - pevent_func_handler func, char *name); - -struct format_field *pevent_find_common_field(struct event_format *event, const char *name); -struct format_field *pevent_find_field(struct event_format *event, const char *name); -struct format_field *pevent_find_any_field(struct event_format *event, const char *name); - -const char *pevent_find_function(struct pevent *pevent, unsigned long long addr); -unsigned long long -pevent_find_function_address(struct pevent *pevent, unsigned long long addr); -unsigned long long pevent_read_number(struct pevent *pevent, const void *ptr, int size); -int pevent_read_number_field(struct format_field *field, const void *data, - unsigned long long *value); - -struct event_format *pevent_find_event(struct pevent *pevent, int id); - -struct event_format * -pevent_find_event_by_name(struct pevent *pevent, const char *sys, const char *name); - -struct event_format * -pevent_find_event_by_record(struct pevent *pevent, struct pevent_record *record); - -void pevent_data_lat_fmt(struct pevent *pevent, - struct trace_seq *s, struct pevent_record *record); -int pevent_data_type(struct pevent *pevent, struct pevent_record *rec); -struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type); -int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec); -int pevent_data_preempt_count(struct pevent *pevent, struct pevent_record *rec); -int pevent_data_flags(struct pevent *pevent, struct pevent_record *rec); -const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid); -struct cmdline; -struct cmdline *pevent_data_pid_from_comm(struct pevent *pevent, const char *comm, - struct cmdline *next); -int pevent_cmdline_pid(struct pevent *pevent, struct cmdline *cmdline); - -void pevent_print_field(struct trace_seq *s, void *data, - struct format_field *field); -void pevent_print_fields(struct trace_seq *s, void *data, - int size __maybe_unused, struct event_format *event); -void pevent_event_info(struct trace_seq *s, struct event_format *event, - struct pevent_record *record); -int pevent_strerror(struct pevent *pevent, enum pevent_errno errnum, - char *buf, size_t buflen); - -struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type); -struct format_field **pevent_event_common_fields(struct event_format *event); -struct format_field **pevent_event_fields(struct event_format *event); - -static inline int pevent_get_cpus(struct pevent *pevent) -{ - return pevent->cpus; -} - -static inline void pevent_set_cpus(struct pevent *pevent, int cpus) -{ - pevent->cpus = cpus; -} - -static inline int pevent_get_long_size(struct pevent *pevent) -{ - return pevent->long_size; -} - -static inline void pevent_set_long_size(struct pevent *pevent, int long_size) -{ - pevent->long_size = long_size; -} - -static inline int pevent_get_page_size(struct pevent *pevent) -{ - return pevent->page_size; -} - -static inline void pevent_set_page_size(struct pevent *pevent, int _page_size) -{ - pevent->page_size = _page_size; -} - -static inline int pevent_is_file_bigendian(struct pevent *pevent) -{ - return pevent->file_bigendian; -} - -static inline void pevent_set_file_bigendian(struct pevent *pevent, int endian) -{ - pevent->file_bigendian = endian; -} - -static inline int pevent_is_host_bigendian(struct pevent *pevent) -{ - return pevent->host_bigendian; -} - -static inline void pevent_set_host_bigendian(struct pevent *pevent, int endian) -{ - pevent->host_bigendian = endian; -} - -static inline int pevent_is_latency_format(struct pevent *pevent) -{ - return pevent->latency_format; -} - -static inline void pevent_set_latency_format(struct pevent *pevent, int lat) -{ - pevent->latency_format = lat; -} - -struct pevent *pevent_alloc(void); -void pevent_free(struct pevent *pevent); -void pevent_ref(struct pevent *pevent); -void pevent_unref(struct pevent *pevent); - -/* access to the internal parser */ -void pevent_buffer_init(const char *buf, unsigned long long size); -enum event_type pevent_read_token(char **tok); -void pevent_free_token(char *token); -int pevent_peek_char(void); -const char *pevent_get_input_buf(void); -unsigned long long pevent_get_input_buf_ptr(void); - -/* for debugging */ -void pevent_print_funcs(struct pevent *pevent); -void pevent_print_printk(struct pevent *pevent); - -/* ----------------------- filtering ----------------------- */ - -enum filter_boolean_type { - FILTER_FALSE, - FILTER_TRUE, -}; - -enum filter_op_type { - FILTER_OP_AND = 1, - FILTER_OP_OR, - FILTER_OP_NOT, -}; - -enum filter_cmp_type { - FILTER_CMP_NONE, - FILTER_CMP_EQ, - FILTER_CMP_NE, - FILTER_CMP_GT, - FILTER_CMP_LT, - FILTER_CMP_GE, - FILTER_CMP_LE, - FILTER_CMP_MATCH, - FILTER_CMP_NOT_MATCH, - FILTER_CMP_REGEX, - FILTER_CMP_NOT_REGEX, -}; - -enum filter_exp_type { - FILTER_EXP_NONE, - FILTER_EXP_ADD, - FILTER_EXP_SUB, - FILTER_EXP_MUL, - FILTER_EXP_DIV, - FILTER_EXP_MOD, - FILTER_EXP_RSHIFT, - FILTER_EXP_LSHIFT, - FILTER_EXP_AND, - FILTER_EXP_OR, - FILTER_EXP_XOR, - FILTER_EXP_NOT, -}; - -enum filter_arg_type { - FILTER_ARG_NONE, - FILTER_ARG_BOOLEAN, - FILTER_ARG_VALUE, - FILTER_ARG_FIELD, - FILTER_ARG_EXP, - FILTER_ARG_OP, - FILTER_ARG_NUM, - FILTER_ARG_STR, -}; - -enum filter_value_type { - FILTER_NUMBER, - FILTER_STRING, - FILTER_CHAR -}; - -struct fliter_arg; - -struct filter_arg_boolean { - enum filter_boolean_type value; -}; - -struct filter_arg_field { - struct format_field *field; -}; - -struct filter_arg_value { - enum filter_value_type type; - union { - char *str; - unsigned long long val; - }; -}; - -struct filter_arg_op { - enum filter_op_type type; - struct filter_arg *left; - struct filter_arg *right; -}; - -struct filter_arg_exp { - enum filter_exp_type type; - struct filter_arg *left; - struct filter_arg *right; -}; - -struct filter_arg_num { - enum filter_cmp_type type; - struct filter_arg *left; - struct filter_arg *right; -}; - -struct filter_arg_str { - enum filter_cmp_type type; - struct format_field *field; - char *val; - char *buffer; - regex_t reg; -}; - -struct filter_arg { - enum filter_arg_type type; - union { - struct filter_arg_boolean boolean; - struct filter_arg_field field; - struct filter_arg_value value; - struct filter_arg_op op; - struct filter_arg_exp exp; - struct filter_arg_num num; - struct filter_arg_str str; - }; -}; - -struct filter_type { - int event_id; - struct event_format *event; - struct filter_arg *filter; -}; - -#define PEVENT_FILTER_ERROR_BUFSZ 1024 - -struct event_filter { - struct pevent *pevent; - int filters; - struct filter_type *event_filters; - char error_buffer[PEVENT_FILTER_ERROR_BUFSZ]; -}; - -struct event_filter *pevent_filter_alloc(struct pevent *pevent); - -/* for backward compatibility */ -#define FILTER_NONE PEVENT_ERRNO__NO_FILTER -#define FILTER_NOEXIST PEVENT_ERRNO__FILTER_NOT_FOUND -#define FILTER_MISS PEVENT_ERRNO__FILTER_MISS -#define FILTER_MATCH PEVENT_ERRNO__FILTER_MATCH - -enum filter_trivial_type { - FILTER_TRIVIAL_FALSE, - FILTER_TRIVIAL_TRUE, - FILTER_TRIVIAL_BOTH, -}; - -enum pevent_errno pevent_filter_add_filter_str(struct event_filter *filter, - const char *filter_str); - -enum pevent_errno pevent_filter_match(struct event_filter *filter, - struct pevent_record *record); - -int pevent_filter_strerror(struct event_filter *filter, enum pevent_errno err, - char *buf, size_t buflen); - -int pevent_event_filtered(struct event_filter *filter, - int event_id); - -void pevent_filter_reset(struct event_filter *filter); - -int pevent_filter_clear_trivial(struct event_filter *filter, - enum filter_trivial_type type); - -void pevent_filter_free(struct event_filter *filter); - -char *pevent_filter_make_string(struct event_filter *filter, int event_id); - -int pevent_filter_remove_event(struct event_filter *filter, - int event_id); - -int pevent_filter_event_has_trivial(struct event_filter *filter, - int event_id, - enum filter_trivial_type type); - -int pevent_filter_copy(struct event_filter *dest, struct event_filter *source); - -int pevent_update_trivial(struct event_filter *dest, struct event_filter *source, - enum filter_trivial_type type); - -int pevent_filter_compare(struct event_filter *filter1, struct event_filter *filter2); - -#endif /* _PARSE_EVENTS_H */ diff --git a/tools/lib/traceevent/event-plugin.c b/tools/lib/traceevent/event-plugin.c deleted file mode 100644 index a16756ae3526..000000000000 --- a/tools/lib/traceevent/event-plugin.c +++ /dev/null @@ -1,464 +0,0 @@ -/* - * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; - * version 2.1 of the License (not later!) - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this program; if not, see <http://www.gnu.org/licenses> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ - -#include <ctype.h> -#include <stdio.h> -#include <string.h> -#include <dlfcn.h> -#include <stdlib.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <unistd.h> -#include <dirent.h> -#include "event-parse.h" -#include "event-utils.h" - -#define LOCAL_PLUGIN_DIR ".traceevent/plugins" - -static struct registered_plugin_options { - struct registered_plugin_options *next; - struct pevent_plugin_option *options; -} *registered_options; - -static struct trace_plugin_options { - struct trace_plugin_options *next; - char *plugin; - char *option; - char *value; -} *trace_plugin_options; - -struct plugin_list { - struct plugin_list *next; - char *name; - void *handle; -}; - -static void lower_case(char *str) -{ - if (!str) - return; - for (; *str; str++) - *str = tolower(*str); -} - -static int update_option_value(struct pevent_plugin_option *op, const char *val) -{ - char *op_val; - - if (!val) { - /* toggle, only if option is boolean */ - if (op->value) - /* Warn? */ - return 0; - op->set ^= 1; - return 0; - } - - /* - * If the option has a value then it takes a string - * otherwise the option is a boolean. - */ - if (op->value) { - op->value = val; - return 0; - } - - /* Option is boolean, must be either "1", "0", "true" or "false" */ - - op_val = strdup(val); - if (!op_val) - return -1; - lower_case(op_val); - - if (strcmp(val, "1") == 0 || strcmp(val, "true") == 0) - op->set = 1; - else if (strcmp(val, "0") == 0 || strcmp(val, "false") == 0) - op->set = 0; - free(op_val); - - return 0; -} - -/** - * traceevent_plugin_list_options - get list of plugin options - * - * Returns an array of char strings that list the currently registered - * plugin options in the format of <plugin>:<option>. This list can be - * used by toggling the option. - * - * Returns NULL if there's no options registered. On error it returns - * INVALID_PLUGIN_LIST_OPTION - * - * Must be freed with traceevent_plugin_free_options_list(). - */ -char **traceevent_plugin_list_options(void) -{ - struct registered_plugin_options *reg; - struct pevent_plugin_option *op; - char **list = NULL; - char *name; - int count = 0; - - for (reg = registered_options; reg; reg = reg->next) { - for (op = reg->options; op->name; op++) { - char *alias = op->plugin_alias ? op->plugin_alias : op->file; - char **temp = list; - - name = malloc(strlen(op->name) + strlen(alias) + 2); - if (!name) - goto err; - - sprintf(name, "%s:%s", alias, op->name); - list = realloc(list, count + 2); - if (!list) { - list = temp; - free(name); - goto err; - } - list[count++] = name; - list[count] = NULL; - } - } - return list; - - err: - while (--count >= 0) - free(list[count]); - free(list); - - return INVALID_PLUGIN_LIST_OPTION; -} - -void traceevent_plugin_free_options_list(char **list) -{ - int i; - - if (!list) - return; - - if (list == INVALID_PLUGIN_LIST_OPTION) - return; - - for (i = 0; list[i]; i++) - free(list[i]); - - free(list); -} - -static int -update_option(const char *file, struct pevent_plugin_option *option) -{ - struct trace_plugin_options *op; - char *plugin; - int ret = 0; - - if (option->plugin_alias) { - plugin = strdup(option->plugin_alias); - if (!plugin) - return -1; - } else { - char *p; - plugin = strdup(file); - if (!plugin) - return -1; - p = strstr(plugin, "."); - if (p) - *p = '\0'; - } - - /* first look for named options */ - for (op = trace_plugin_options; op; op = op->next) { - if (!op->plugin) - continue; - if (strcmp(op->plugin, plugin) != 0) - continue; - if (strcmp(op->option, option->name) != 0) - continue; - - ret = update_option_value(option, op->value); - if (ret) - goto out; - break; - } - - /* first look for unnamed options */ - for (op = trace_plugin_options; op; op = op->next) { - if (op->plugin) - continue; - if (strcmp(op->option, option->name) != 0) - continue; - - ret = update_option_value(option, op->value); - break; - } - - out: - free(plugin); - return ret; -} - -/** - * traceevent_plugin_add_options - Add a set of options by a plugin - * @name: The name of the plugin adding the options - * @options: The set of options being loaded - * - * Sets the options with the values that have been added by user. - */ -int traceevent_plugin_add_options(const char *name, - struct pevent_plugin_option *options) -{ - struct registered_plugin_options *reg; - - reg = malloc(sizeof(*reg)); - if (!reg) - return -1; - reg->next = registered_options; - reg->options = options; - registered_options = reg; - - while (options->name) { - update_option(name, options); - options++; - } - return 0; -} - -/** - * traceevent_plugin_remove_options - remove plugin options that were registered - * @options: Options to removed that were registered with traceevent_plugin_add_options - */ -void traceevent_plugin_remove_options(struct pevent_plugin_option *options) -{ - struct registered_plugin_options **last; - struct registered_plugin_options *reg; - - for (last = ®istered_options; *last; last = &(*last)->next) { - if ((*last)->options == options) { - reg = *last; - *last = reg->next; - free(reg); - return; - } - } -} - -/** - * traceevent_print_plugins - print out the list of plugins loaded - * @s: the trace_seq descripter to write to - * @prefix: The prefix string to add before listing the option name - * @suffix: The suffix string ot append after the option name - * @list: The list of plugins (usually returned by traceevent_load_plugins() - * - * Writes to the trace_seq @s the list of plugins (files) that is - * returned by traceevent_load_plugins(). Use @prefix and @suffix for formating: - * @prefix = " ", @suffix = "\n". - */ -void traceevent_print_plugins(struct trace_seq *s, - const char *prefix, const char *suffix, - const struct plugin_list *list) -{ - while (list) { - trace_seq_printf(s, "%s%s%s", prefix, list->name, suffix); - list = list->next; - } -} - -static void -load_plugin(struct pevent *pevent, const char *path, - const char *file, void *data) -{ - struct plugin_list **plugin_list = data; - pevent_plugin_load_func func; - struct plugin_list *list; - const char *alias; - char *plugin; - void *handle; - - plugin = malloc(strlen(path) + strlen(file) + 2); - if (!plugin) { - warning("could not allocate plugin memory\n"); - return; - } - - strcpy(plugin, path); - strcat(plugin, "/"); - strcat(plugin, file); - - handle = dlopen(plugin, RTLD_NOW | RTLD_GLOBAL); - if (!handle) { - warning("could not load plugin '%s'\n%s\n", - plugin, dlerror()); - goto out_free; - } - - alias = dlsym(handle, PEVENT_PLUGIN_ALIAS_NAME); - if (!alias) - alias = file; - - func = dlsym(handle, PEVENT_PLUGIN_LOADER_NAME); - if (!func) { - warning("could not find func '%s' in plugin '%s'\n%s\n", - PEVENT_PLUGIN_LOADER_NAME, plugin, dlerror()); - goto out_free; - } - - list = malloc(sizeof(*list)); - if (!list) { - warning("could not allocate plugin memory\n"); - goto out_free; - } - - list->next = *plugin_list; - list->handle = handle; - list->name = plugin; - *plugin_list = list; - - pr_stat("registering plugin: %s", plugin); - func(pevent); - return; - - out_free: - free(plugin); -} - -static void -load_plugins_dir(struct pevent *pevent, const char *suffix, - const char *path, - void (*load_plugin)(struct pevent *pevent, - const char *path, - const char *name, - void *data), - void *data) -{ - struct dirent *dent; - struct stat st; - DIR *dir; - int ret; - - ret = stat(path, &st); - if (ret < 0) - return; - - if (!S_ISDIR(st.st_mode)) - return; - - dir = opendir(path); - if (!dir) - return; - - while ((dent = readdir(dir))) { - const char *name = dent->d_name; - - if (strcmp(name, ".") == 0 || - strcmp(name, "..") == 0) - continue; - - /* Only load plugins that end in suffix */ - if (strcmp(name + (strlen(name) - strlen(suffix)), suffix) != 0) - continue; - - load_plugin(pevent, path, name, data); - } - - closedir(dir); -} - -static void -load_plugins(struct pevent *pevent, const char *suffix, - void (*load_plugin)(struct pevent *pevent, - const char *path, - const char *name, - void *data), - void *data) -{ - char *home; - char *path; - char *envdir; - - if (pevent->flags & PEVENT_DISABLE_PLUGINS) - return; - - /* - * If a system plugin directory was defined, - * check that first. - */ -#ifdef PLUGIN_DIR - if (!(pevent->flags & PEVENT_DISABLE_SYS_PLUGINS)) - load_plugins_dir(pevent, suffix, PLUGIN_DIR, - load_plugin, data); -#endif - - /* - * Next let the environment-set plugin directory - * override the system defaults. - */ - envdir = getenv("TRACEEVENT_PLUGIN_DIR"); - if (envdir) - load_plugins_dir(pevent, suffix, envdir, load_plugin, data); - - /* - * Now let the home directory override the environment - * or system defaults. - */ - home = getenv("HOME"); - if (!home) - return; - - path = malloc(strlen(home) + strlen(LOCAL_PLUGIN_DIR) + 2); - if (!path) { - warning("could not allocate plugin memory\n"); - return; - } - - strcpy(path, home); - strcat(path, "/"); - strcat(path, LOCAL_PLUGIN_DIR); - - load_plugins_dir(pevent, suffix, path, load_plugin, data); - - free(path); -} - -struct plugin_list* -traceevent_load_plugins(struct pevent *pevent) -{ - struct plugin_list *list = NULL; - - load_plugins(pevent, ".so", load_plugin, &list); - return list; -} - -void -traceevent_unload_plugins(struct plugin_list *plugin_list, struct pevent *pevent) -{ - pevent_plugin_unload_func func; - struct plugin_list *list; - - while (plugin_list) { - list = plugin_list; - plugin_list = list->next; - func = dlsym(list->handle, PEVENT_PLUGIN_UNLOADER_NAME); - if (func) - func(pevent); - dlclose(list->handle); - free(list->name); - free(list); - } -} diff --git a/tools/lib/traceevent/event-utils.h b/tools/lib/traceevent/event-utils.h deleted file mode 100644 index d1dc2170e402..000000000000 --- a/tools/lib/traceevent/event-utils.h +++ /dev/null @@ -1,81 +0,0 @@ -/* - * Copyright (C) 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; - * version 2.1 of the License (not later!) - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this program; if not, see <http://www.gnu.org/licenses> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ -#ifndef __UTIL_H -#define __UTIL_H - -#include <ctype.h> - -/* Can be overridden */ -void warning(const char *fmt, ...); -void pr_stat(const char *fmt, ...); -void vpr_stat(const char *fmt, va_list ap); - -/* Always available */ -void __warning(const char *fmt, ...); -void __pr_stat(const char *fmt, ...); - -void __vwarning(const char *fmt, ...); -void __vpr_stat(const char *fmt, ...); - -#define min(x, y) ({ \ - typeof(x) _min1 = (x); \ - typeof(y) _min2 = (y); \ - (void) (&_min1 == &_min2); \ - _min1 < _min2 ? _min1 : _min2; }) - -static inline char *strim(char *string) -{ - char *ret; - - if (!string) - return NULL; - while (*string) { - if (!isspace(*string)) - break; - string++; - } - ret = string; - - string = ret + strlen(ret) - 1; - while (string > ret) { - if (!isspace(*string)) - break; - string--; - } - string[1] = 0; - - return ret; -} - -static inline int has_text(const char *text) -{ - if (!text) - return 0; - - while (*text) { - if (!isspace(*text)) - return 1; - text++; - } - - return 0; -} - -#endif diff --git a/tools/lib/traceevent/kbuffer-parse.c b/tools/lib/traceevent/kbuffer-parse.c deleted file mode 100644 index c94e3641b046..000000000000 --- a/tools/lib/traceevent/kbuffer-parse.c +++ /dev/null @@ -1,744 +0,0 @@ -/* - * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; - * version 2.1 of the License (not later!) - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "kbuffer.h" - -#define MISSING_EVENTS (1 << 31) -#define MISSING_STORED (1 << 30) - -#define COMMIT_MASK ((1 << 27) - 1) - -enum { - KBUFFER_FL_HOST_BIG_ENDIAN = (1<<0), - KBUFFER_FL_BIG_ENDIAN = (1<<1), - KBUFFER_FL_LONG_8 = (1<<2), - KBUFFER_FL_OLD_FORMAT = (1<<3), -}; - -#define ENDIAN_MASK (KBUFFER_FL_HOST_BIG_ENDIAN | KBUFFER_FL_BIG_ENDIAN) - -/** kbuffer - * @timestamp - timestamp of current event - * @lost_events - # of lost events between this subbuffer and previous - * @flags - special flags of the kbuffer - * @subbuffer - pointer to the sub-buffer page - * @data - pointer to the start of data on the sub-buffer page - * @index - index from @data to the @curr event data - * @curr - offset from @data to the start of current event - * (includes metadata) - * @next - offset from @data to the start of next event - * @size - The size of data on @data - * @start - The offset from @subbuffer where @data lives - * - * @read_4 - Function to read 4 raw bytes (may swap) - * @read_8 - Function to read 8 raw bytes (may swap) - * @read_long - Function to read a long word (4 or 8 bytes with needed swap) - */ -struct kbuffer { - unsigned long long timestamp; - long long lost_events; - unsigned long flags; - void *subbuffer; - void *data; - unsigned int index; - unsigned int curr; - unsigned int next; - unsigned int size; - unsigned int start; - - unsigned int (*read_4)(void *ptr); - unsigned long long (*read_8)(void *ptr); - unsigned long long (*read_long)(struct kbuffer *kbuf, void *ptr); - int (*next_event)(struct kbuffer *kbuf); -}; - -static void *zmalloc(size_t size) -{ - return calloc(1, size); -} - -static int host_is_bigendian(void) -{ - unsigned char str[] = { 0x1, 0x2, 0x3, 0x4 }; - unsigned int *ptr; - - ptr = (unsigned int *)str; - return *ptr == 0x01020304; -} - -static int do_swap(struct kbuffer *kbuf) -{ - return ((kbuf->flags & KBUFFER_FL_HOST_BIG_ENDIAN) + kbuf->flags) & - ENDIAN_MASK; -} - -static unsigned long long __read_8(void *ptr) -{ - unsigned long long data = *(unsigned long long *)ptr; - - return data; -} - -static unsigned long long __read_8_sw(void *ptr) -{ - unsigned long long data = *(unsigned long long *)ptr; - unsigned long long swap; - - swap = ((data & 0xffULL) << 56) | - ((data & (0xffULL << 8)) << 40) | - ((data & (0xffULL << 16)) << 24) | - ((data & (0xffULL << 24)) << 8) | - ((data & (0xffULL << 32)) >> 8) | - ((data & (0xffULL << 40)) >> 24) | - ((data & (0xffULL << 48)) >> 40) | - ((data & (0xffULL << 56)) >> 56); - - return swap; -} - -static unsigned int __read_4(void *ptr) -{ - unsigned int data = *(unsigned int *)ptr; - - return data; -} - -static unsigned int __read_4_sw(void *ptr) -{ - unsigned int data = *(unsigned int *)ptr; - unsigned int swap; - - swap = ((data & 0xffULL) << 24) | - ((data & (0xffULL << 8)) << 8) | - ((data & (0xffULL << 16)) >> 8) | - ((data & (0xffULL << 24)) >> 24); - - return swap; -} - -static unsigned long long read_8(struct kbuffer *kbuf, void *ptr) -{ - return kbuf->read_8(ptr); -} - -static unsigned int read_4(struct kbuffer *kbuf, void *ptr) -{ - return kbuf->read_4(ptr); -} - -static unsigned long long __read_long_8(struct kbuffer *kbuf, void *ptr) -{ - return kbuf->read_8(ptr); -} - -static unsigned long long __read_long_4(struct kbuffer *kbuf, void *ptr) -{ - return kbuf->read_4(ptr); -} - -static unsigned long long read_long(struct kbuffer *kbuf, void *ptr) -{ - return kbuf->read_long(kbuf, ptr); -} - -static int calc_index(struct kbuffer *kbuf, void *ptr) -{ - return (unsigned long)ptr - (unsigned long)kbuf->data; -} - -static int __next_event(struct kbuffer *kbuf); - -/** - * kbuffer_alloc - allocat a new kbuffer - * @size; enum to denote size of word - * @endian: enum to denote endianness - * - * Allocates and returns a new kbuffer. - */ -struct kbuffer * -kbuffer_alloc(enum kbuffer_long_size size, enum kbuffer_endian endian) -{ - struct kbuffer *kbuf; - int flags = 0; - - switch (size) { - case KBUFFER_LSIZE_4: - break; - case KBUFFER_LSIZE_8: - flags |= KBUFFER_FL_LONG_8; - break; - default: - return NULL; - } - - switch (endian) { - case KBUFFER_ENDIAN_LITTLE: - break; - case KBUFFER_ENDIAN_BIG: - flags |= KBUFFER_FL_BIG_ENDIAN; - break; - default: - return NULL; - } - - kbuf = zmalloc(sizeof(*kbuf)); - if (!kbuf) - return NULL; - - kbuf->flags = flags; - - if (host_is_bigendian()) - kbuf->flags |= KBUFFER_FL_HOST_BIG_ENDIAN; - - if (do_swap(kbuf)) { - kbuf->read_8 = __read_8_sw; - kbuf->read_4 = __read_4_sw; - } else { - kbuf->read_8 = __read_8; - kbuf->read_4 = __read_4; - } - - if (kbuf->flags & KBUFFER_FL_LONG_8) - kbuf->read_long = __read_long_8; - else - kbuf->read_long = __read_long_4; - - /* May be changed by kbuffer_set_old_format() */ - kbuf->next_event = __next_event; - - return kbuf; -} - -/** kbuffer_free - free an allocated kbuffer - * @kbuf: The kbuffer to free - * - * Can take NULL as a parameter. - */ -void kbuffer_free(struct kbuffer *kbuf) -{ - free(kbuf); -} - -static unsigned int type4host(struct kbuffer *kbuf, - unsigned int type_len_ts) -{ - if (kbuf->flags & KBUFFER_FL_BIG_ENDIAN) - return (type_len_ts >> 29) & 3; - else - return type_len_ts & 3; -} - -static unsigned int len4host(struct kbuffer *kbuf, - unsigned int type_len_ts) -{ - if (kbuf->flags & KBUFFER_FL_BIG_ENDIAN) - return (type_len_ts >> 27) & 7; - else - return (type_len_ts >> 2) & 7; -} - -static unsigned int type_len4host(struct kbuffer *kbuf, - unsigned int type_len_ts) -{ - if (kbuf->flags & KBUFFER_FL_BIG_ENDIAN) - return (type_len_ts >> 27) & ((1 << 5) - 1); - else - return type_len_ts & ((1 << 5) - 1); -} - -static unsigned int ts4host(struct kbuffer *kbuf, - unsigned int type_len_ts) -{ - if (kbuf->flags & KBUFFER_FL_BIG_ENDIAN) - return type_len_ts & ((1 << 27) - 1); - else - return type_len_ts >> 5; -} - -/* - * Linux 2.6.30 and earlier (not much ealier) had a different - * ring buffer format. It should be obsolete, but we handle it anyway. - */ -enum old_ring_buffer_type { - OLD_RINGBUF_TYPE_PADDING, - OLD_RINGBUF_TYPE_TIME_EXTEND, - OLD_RINGBUF_TYPE_TIME_STAMP, - OLD_RINGBUF_TYPE_DATA, -}; - -static unsigned int old_update_pointers(struct kbuffer *kbuf) -{ - unsigned long long extend; - unsigned int type_len_ts; - unsigned int type; - unsigned int len; - unsigned int delta; - unsigned int length; - void *ptr = kbuf->data + kbuf->curr; - - type_len_ts = read_4(kbuf, ptr); - ptr += 4; - - type = type4host(kbuf, type_len_ts); - len = len4host(kbuf, type_len_ts); - delta = ts4host(kbuf, type_len_ts); - - switch (type) { - case OLD_RINGBUF_TYPE_PADDING: - kbuf->next = kbuf->size; - return 0; - - case OLD_RINGBUF_TYPE_TIME_EXTEND: - extend = read_4(kbuf, ptr); - extend <<= TS_SHIFT; - extend += delta; - delta = extend; - ptr += 4; - length = 0; - break; - - case OLD_RINGBUF_TYPE_TIME_STAMP: - /* should never happen! */ - kbuf->curr = kbuf->size; - kbuf->next = kbuf->size; - kbuf->index = kbuf->size; - return -1; - default: - if (len) - length = len * 4; - else { - length = read_4(kbuf, ptr); - length -= 4; - ptr += 4; - } - break; - } - - kbuf->timestamp += delta; - kbuf->index = calc_index(kbuf, ptr); - kbuf->next = kbuf->index + length; - - return type; -} - -static int __old_next_event(struct kbuffer *kbuf) -{ - int type; - - do { - kbuf->curr = kbuf->next; - if (kbuf->next >= kbuf->size) - return -1; - type = old_update_pointers(kbuf); - } while (type == OLD_RINGBUF_TYPE_TIME_EXTEND || type == OLD_RINGBUF_TYPE_PADDING); - - return 0; -} - -static unsigned int -translate_data(struct kbuffer *kbuf, void *data, void **rptr, - unsigned long long *delta, int *length) -{ - unsigned long long extend; - unsigned int type_len_ts; - unsigned int type_len; - - type_len_ts = read_4(kbuf, data); - data += 4; - - type_len = type_len4host(kbuf, type_len_ts); - *delta = ts4host(kbuf, type_len_ts); - - switch (type_len) { - case KBUFFER_TYPE_PADDING: - *length = read_4(kbuf, data); - break; - - case KBUFFER_TYPE_TIME_EXTEND: - extend = read_4(kbuf, data); - data += 4; - extend <<= TS_SHIFT; - extend += *delta; - *delta = extend; - *length = 0; - break; - - case KBUFFER_TYPE_TIME_STAMP: - data += 12; - *length = 0; - break; - case 0: - *length = read_4(kbuf, data) - 4; - *length = (*length + 3) & ~3; - data += 4; - break; - default: - *length = type_len * 4; - break; - } - - *rptr = data; - - return type_len; -} - -static unsigned int update_pointers(struct kbuffer *kbuf) -{ - unsigned long long delta; - unsigned int type_len; - int length; - void *ptr = kbuf->data + kbuf->curr; - - type_len = translate_data(kbuf, ptr, &ptr, &delta, &length); - - kbuf->timestamp += delta; - kbuf->index = calc_index(kbuf, ptr); - kbuf->next = kbuf->index + length; - - return type_len; -} - -/** - * kbuffer_translate_data - read raw data to get a record - * @swap: Set to 1 if bytes in words need to be swapped when read - * @data: The raw data to read - * @size: Address to store the size of the event data. - * - * Returns a pointer to the event data. To determine the entire - * record size (record metadata + data) just add the difference between - * @data and the returned value to @size. - */ -void *kbuffer_translate_data(int swap, void *data, unsigned int *size) -{ - unsigned long long delta; - struct kbuffer kbuf; - int type_len; - int length; - void *ptr; - - if (swap) { - kbuf.read_8 = __read_8_sw; - kbuf.read_4 = __read_4_sw; - kbuf.flags = host_is_bigendian() ? 0 : KBUFFER_FL_BIG_ENDIAN; - } else { - kbuf.read_8 = __read_8; - kbuf.read_4 = __read_4; - kbuf.flags = host_is_bigendian() ? KBUFFER_FL_BIG_ENDIAN: 0; - } - - type_len = translate_data(&kbuf, data, &ptr, &delta, &length); - switch (type_len) { - case KBUFFER_TYPE_PADDING: - case KBUFFER_TYPE_TIME_EXTEND: - case KBUFFER_TYPE_TIME_STAMP: - return NULL; - }; - - *size = length; - - return ptr; -} - -static int __next_event(struct kbuffer *kbuf) -{ - int type; - - do { - kbuf->curr = kbuf->next; - if (kbuf->next >= kbuf->size) - return -1; - type = update_pointers(kbuf); - } while (type == KBUFFER_TYPE_TIME_EXTEND || type == KBUFFER_TYPE_PADDING); - - return 0; -} - -static int next_event(struct kbuffer *kbuf) -{ - return kbuf->next_event(kbuf); -} - -/** - * kbuffer_next_event - increment the current pointer - * @kbuf: The kbuffer to read - * @ts: Address to store the next record's timestamp (may be NULL to ignore) - * - * Increments the pointers into the subbuffer of the kbuffer to point to the - * next event so that the next kbuffer_read_event() will return a - * new event. - * - * Returns the data of the next event if a new event exists on the subbuffer, - * NULL otherwise. - */ -void *kbuffer_next_event(struct kbuffer *kbuf, unsigned long long *ts) -{ - int ret; - - if (!kbuf || !kbuf->subbuffer) - return NULL; - - ret = next_event(kbuf); - if (ret < 0) - return NULL; - - if (ts) - *ts = kbuf->timestamp; - - return kbuf->data + kbuf->index; -} - -/** - * kbuffer_load_subbuffer - load a new subbuffer into the kbuffer - * @kbuf: The kbuffer to load - * @subbuffer: The subbuffer to load into @kbuf. - * - * Load a new subbuffer (page) into @kbuf. This will reset all - * the pointers and update the @kbuf timestamp. The next read will - * return the first event on @subbuffer. - * - * Returns 0 on succes, -1 otherwise. - */ -int kbuffer_load_subbuffer(struct kbuffer *kbuf, void *subbuffer) -{ - unsigned long long flags; - void *ptr = subbuffer; - - if (!kbuf || !subbuffer) - return -1; - - kbuf->subbuffer = subbuffer; - - kbuf->timestamp = read_8(kbuf, ptr); - ptr += 8; - - kbuf->curr = 0; - - if (kbuf->flags & KBUFFER_FL_LONG_8) - kbuf->start = 16; - else - kbuf->start = 12; - - kbuf->data = subbuffer + kbuf->start; - - flags = read_long(kbuf, ptr); - kbuf->size = (unsigned int)flags & COMMIT_MASK; - - if (flags & MISSING_EVENTS) { - if (flags & MISSING_STORED) { - ptr = kbuf->data + kbuf->size; - kbuf->lost_events = read_long(kbuf, ptr); - } else - kbuf->lost_events = -1; - } else - kbuf->lost_events = 0; - - kbuf->index = 0; - kbuf->next = 0; - - next_event(kbuf); - - return 0; -} - -/** - * kbuffer_read_event - read the next event in the kbuffer subbuffer - * @kbuf: The kbuffer to read from - * @ts: The address to store the timestamp of the event (may be NULL to ignore) - * - * Returns a pointer to the data part of the current event. - * NULL if no event is left on the subbuffer. - */ -void *kbuffer_read_event(struct kbuffer *kbuf, unsigned long long *ts) -{ - if (!kbuf || !kbuf->subbuffer) - return NULL; - - if (kbuf->curr >= kbuf->size) - return NULL; - - if (ts) - *ts = kbuf->timestamp; - return kbuf->data + kbuf->index; -} - -/** - * kbuffer_timestamp - Return the timestamp of the current event - * @kbuf: The kbuffer to read from - * - * Returns the timestamp of the current (next) event. - */ -unsigned long long kbuffer_timestamp(struct kbuffer *kbuf) -{ - return kbuf->timestamp; -} - -/** - * kbuffer_read_at_offset - read the event that is at offset - * @kbuf: The kbuffer to read from - * @offset: The offset into the subbuffer - * @ts: The address to store the timestamp of the event (may be NULL to ignore) - * - * The @offset must be an index from the @kbuf subbuffer beginning. - * If @offset is bigger than the stored subbuffer, NULL will be returned. - * - * Returns the data of the record that is at @offset. Note, @offset does - * not need to be the start of the record, the offset just needs to be - * in the record (or beginning of it). - * - * Note, the kbuf timestamp and pointers are updated to the - * returned record. That is, kbuffer_read_event() will return the same - * data and timestamp, and kbuffer_next_event() will increment from - * this record. - */ -void *kbuffer_read_at_offset(struct kbuffer *kbuf, int offset, - unsigned long long *ts) -{ - void *data; - - if (offset < kbuf->start) - offset = 0; - else - offset -= kbuf->start; - - /* Reset the buffer */ - kbuffer_load_subbuffer(kbuf, kbuf->subbuffer); - data = kbuffer_read_event(kbuf, ts); - - while (kbuf->curr < offset) { - data = kbuffer_next_event(kbuf, ts); - if (!data) - break; - } - - return data; -} - -/** - * kbuffer_subbuffer_size - the size of the loaded subbuffer - * @kbuf: The kbuffer to read from - * - * Returns the size of the subbuffer. Note, this size is - * where the last event resides. The stored subbuffer may actually be - * bigger due to padding and such. - */ -int kbuffer_subbuffer_size(struct kbuffer *kbuf) -{ - return kbuf->size; -} - -/** - * kbuffer_curr_index - Return the index of the record - * @kbuf: The kbuffer to read from - * - * Returns the index from the start of the data part of - * the subbuffer to the current location. Note this is not - * from the start of the subbuffer. An index of zero will - * point to the first record. Use kbuffer_curr_offset() for - * the actually offset (that can be used by kbuffer_read_at_offset()) - */ -int kbuffer_curr_index(struct kbuffer *kbuf) -{ - return kbuf->curr; -} - -/** - * kbuffer_curr_offset - Return the offset of the record - * @kbuf: The kbuffer to read from - * - * Returns the offset from the start of the subbuffer to the - * current location. - */ -int kbuffer_curr_offset(struct kbuffer *kbuf) -{ - return kbuf->curr + kbuf->start; -} - -/** - * kbuffer_event_size - return the size of the event data - * @kbuf: The kbuffer to read - * - * Returns the size of the event data (the payload not counting - * the meta data of the record) of the current event. - */ -int kbuffer_event_size(struct kbuffer *kbuf) -{ - return kbuf->next - kbuf->index; -} - -/** - * kbuffer_curr_size - return the size of the entire record - * @kbuf: The kbuffer to read - * - * Returns the size of the entire record (meta data and payload) - * of the current event. - */ -int kbuffer_curr_size(struct kbuffer *kbuf) -{ - return kbuf->next - kbuf->curr; -} - -/** - * kbuffer_missed_events - return the # of missed events from last event. - * @kbuf: The kbuffer to read from - * - * Returns the # of missed events (if recorded) before the current - * event. Note, only events on the beginning of a subbuffer can - * have missed events, all other events within the buffer will be - * zero. - */ -int kbuffer_missed_events(struct kbuffer *kbuf) -{ - /* Only the first event can have missed events */ - if (kbuf->curr) - return 0; - - return kbuf->lost_events; -} - -/** - * kbuffer_set_old_forma - set the kbuffer to use the old format parsing - * @kbuf: The kbuffer to set - * - * This is obsolete (or should be). The first kernels to use the - * new ring buffer had a slightly different ring buffer format - * (2.6.30 and earlier). It is still somewhat supported by kbuffer, - * but should not be counted on in the future. - */ -void kbuffer_set_old_format(struct kbuffer *kbuf) -{ - kbuf->flags |= KBUFFER_FL_OLD_FORMAT; - - kbuf->next_event = __old_next_event; -} - -/** - * kbuffer_start_of_data - return offset of where data starts on subbuffer - * @kbuf: The kbuffer - * - * Returns the location on the subbuffer where the data starts. - */ -int kbuffer_start_of_data(struct kbuffer *kbuf) -{ - return kbuf->start; -} diff --git a/tools/lib/traceevent/kbuffer.h b/tools/lib/traceevent/kbuffer.h deleted file mode 100644 index 03dce757553f..000000000000 --- a/tools/lib/traceevent/kbuffer.h +++ /dev/null @@ -1,68 +0,0 @@ -/* - * Copyright (C) 2012 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; - * version 2.1 of the License (not later!) - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ -#ifndef _KBUFFER_H -#define _KBUFFER_H - -#ifndef TS_SHIFT -#define TS_SHIFT 27 -#endif - -enum kbuffer_endian { - KBUFFER_ENDIAN_BIG, - KBUFFER_ENDIAN_LITTLE, -}; - -enum kbuffer_long_size { - KBUFFER_LSIZE_4, - KBUFFER_LSIZE_8, -}; - -enum { - KBUFFER_TYPE_PADDING = 29, - KBUFFER_TYPE_TIME_EXTEND = 30, - KBUFFER_TYPE_TIME_STAMP = 31, -}; - -struct kbuffer; - -struct kbuffer *kbuffer_alloc(enum kbuffer_long_size size, enum kbuffer_endian endian); -void kbuffer_free(struct kbuffer *kbuf); -int kbuffer_load_subbuffer(struct kbuffer *kbuf, void *subbuffer); -void *kbuffer_read_event(struct kbuffer *kbuf, unsigned long long *ts); -void *kbuffer_next_event(struct kbuffer *kbuf, unsigned long long *ts); -unsigned long long kbuffer_timestamp(struct kbuffer *kbuf); - -void *kbuffer_translate_data(int swap, void *data, unsigned int *size); - -void *kbuffer_read_at_offset(struct kbuffer *kbuf, int offset, unsigned long long *ts); - -int kbuffer_curr_index(struct kbuffer *kbuf); - -int kbuffer_curr_offset(struct kbuffer *kbuf); -int kbuffer_curr_size(struct kbuffer *kbuf); -int kbuffer_event_size(struct kbuffer *kbuf); -int kbuffer_missed_events(struct kbuffer *kbuf); -int kbuffer_subbuffer_size(struct kbuffer *kbuf); - -void kbuffer_set_old_format(struct kbuffer *kbuf); -int kbuffer_start_of_data(struct kbuffer *kbuf); - -#endif /* _K_BUFFER_H */ diff --git a/tools/lib/traceevent/parse-filter.c b/tools/lib/traceevent/parse-filter.c deleted file mode 100644 index 7c214ceb9386..000000000000 --- a/tools/lib/traceevent/parse-filter.c +++ /dev/null @@ -1,2446 +0,0 @@ -/* - * Copyright (C) 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; - * version 2.1 of the License (not later!) - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this program; if not, see <http://www.gnu.org/licenses> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <stdarg.h> -#include <errno.h> -#include <sys/types.h> - -#include "event-parse.h" -#include "event-utils.h" - -#define COMM "COMM" -#define CPU "CPU" - -static struct format_field comm = { - .name = "COMM", -}; - -static struct format_field cpu = { - .name = "CPU", -}; - -struct event_list { - struct event_list *next; - struct event_format *event; -}; - -static void show_error(char *error_buf, const char *fmt, ...) -{ - unsigned long long index; - const char *input; - va_list ap; - int len; - int i; - - input = pevent_get_input_buf(); - index = pevent_get_input_buf_ptr(); - len = input ? strlen(input) : 0; - - if (len) { - strcpy(error_buf, input); - error_buf[len] = '\n'; - for (i = 1; i < len && i < index; i++) - error_buf[len+i] = ' '; - error_buf[len + i] = '^'; - error_buf[len + i + 1] = '\n'; - len += i+2; - } - - va_start(ap, fmt); - vsnprintf(error_buf + len, PEVENT_FILTER_ERROR_BUFSZ - len, fmt, ap); - va_end(ap); -} - -static void free_token(char *token) -{ - pevent_free_token(token); -} - -static enum event_type read_token(char **tok) -{ - enum event_type type; - char *token = NULL; - - do { - free_token(token); - type = pevent_read_token(&token); - } while (type == EVENT_NEWLINE || type == EVENT_SPACE); - - /* If token is = or ! check to see if the next char is ~ */ - if (token && - (strcmp(token, "=") == 0 || strcmp(token, "!") == 0) && - pevent_peek_char() == '~') { - /* append it */ - *tok = malloc(3); - if (*tok == NULL) { - free_token(token); - return EVENT_ERROR; - } - sprintf(*tok, "%c%c", *token, '~'); - free_token(token); - /* Now remove the '~' from the buffer */ - pevent_read_token(&token); - free_token(token); - } else - *tok = token; - - return type; -} - -static int filter_cmp(const void *a, const void *b) -{ - const struct filter_type *ea = a; - const struct filter_type *eb = b; - - if (ea->event_id < eb->event_id) - return -1; - - if (ea->event_id > eb->event_id) - return 1; - - return 0; -} - -static struct filter_type * -find_filter_type(struct event_filter *filter, int id) -{ - struct filter_type *filter_type; - struct filter_type key; - - key.event_id = id; - - filter_type = bsearch(&key, filter->event_filters, - filter->filters, - sizeof(*filter->event_filters), - filter_cmp); - - return filter_type; -} - -static struct filter_type * -add_filter_type(struct event_filter *filter, int id) -{ - struct filter_type *filter_type; - int i; - - filter_type = find_filter_type(filter, id); - if (filter_type) - return filter_type; - - filter_type = realloc(filter->event_filters, - sizeof(*filter->event_filters) * - (filter->filters + 1)); - if (!filter_type) - return NULL; - - filter->event_filters = filter_type; - - for (i = 0; i < filter->filters; i++) { - if (filter->event_filters[i].event_id > id) - break; - } - - if (i < filter->filters) - memmove(&filter->event_filters[i+1], - &filter->event_filters[i], - sizeof(*filter->event_filters) * - (filter->filters - i)); - - filter_type = &filter->event_filters[i]; - filter_type->event_id = id; - filter_type->event = pevent_find_event(filter->pevent, id); - filter_type->filter = NULL; - - filter->filters++; - - return filter_type; -} - -/** - * pevent_filter_alloc - create a new event filter - * @pevent: The pevent that this filter is associated with - */ -struct event_filter *pevent_filter_alloc(struct pevent *pevent) -{ - struct event_filter *filter; - - filter = malloc(sizeof(*filter)); - if (filter == NULL) - return NULL; - - memset(filter, 0, sizeof(*filter)); - filter->pevent = pevent; - pevent_ref(pevent); - - return filter; -} - -static struct filter_arg *allocate_arg(void) -{ - return calloc(1, sizeof(struct filter_arg)); -} - -static void free_arg(struct filter_arg *arg) -{ - if (!arg) - return; - - switch (arg->type) { - case FILTER_ARG_NONE: - case FILTER_ARG_BOOLEAN: - break; - - case FILTER_ARG_NUM: - free_arg(arg->num.left); - free_arg(arg->num.right); - break; - - case FILTER_ARG_EXP: - free_arg(arg->exp.left); - free_arg(arg->exp.right); - break; - - case FILTER_ARG_STR: - free(arg->str.val); - regfree(&arg->str.reg); - free(arg->str.buffer); - break; - - case FILTER_ARG_VALUE: - if (arg->value.type == FILTER_STRING || - arg->value.type == FILTER_CHAR) - free(arg->value.str); - break; - - case FILTER_ARG_OP: - free_arg(arg->op.left); - free_arg(arg->op.right); - default: - break; - } - - free(arg); -} - -static int add_event(struct event_list **events, - struct event_format *event) -{ - struct event_list *list; - - list = malloc(sizeof(*list)); - if (list == NULL) - return -1; - - list->next = *events; - *events = list; - list->event = event; - return 0; -} - -static int event_match(struct event_format *event, - regex_t *sreg, regex_t *ereg) -{ - if (sreg) { - return !regexec(sreg, event->system, 0, NULL, 0) && - !regexec(ereg, event->name, 0, NULL, 0); - } - - return !regexec(ereg, event->system, 0, NULL, 0) || - !regexec(ereg, event->name, 0, NULL, 0); -} - -static enum pevent_errno -find_event(struct pevent *pevent, struct event_list **events, - char *sys_name, char *event_name) -{ - struct event_format *event; - regex_t ereg; - regex_t sreg; - int match = 0; - int fail = 0; - char *reg; - int ret; - int i; - - if (!event_name) { - /* if no name is given, then swap sys and name */ - event_name = sys_name; - sys_name = NULL; - } - - reg = malloc(strlen(event_name) + 3); - if (reg == NULL) - return PEVENT_ERRNO__MEM_ALLOC_FAILED; - - sprintf(reg, "^%s$", event_name); - - ret = regcomp(&ereg, reg, REG_ICASE|REG_NOSUB); - free(reg); - - if (ret) - return PEVENT_ERRNO__INVALID_EVENT_NAME; - - if (sys_name) { - reg = malloc(strlen(sys_name) + 3); - if (reg == NULL) { - regfree(&ereg); - return PEVENT_ERRNO__MEM_ALLOC_FAILED; - } - - sprintf(reg, "^%s$", sys_name); - ret = regcomp(&sreg, reg, REG_ICASE|REG_NOSUB); - free(reg); - if (ret) { - regfree(&ereg); - return PEVENT_ERRNO__INVALID_EVENT_NAME; - } - } - - for (i = 0; i < pevent->nr_events; i++) { - event = pevent->events[i]; - if (event_match(event, sys_name ? &sreg : NULL, &ereg)) { - match = 1; - if (add_event(events, event) < 0) { - fail = 1; - break; - } - } - } - - regfree(&ereg); - if (sys_name) - regfree(&sreg); - - if (!match) - return PEVENT_ERRNO__EVENT_NOT_FOUND; - if (fail) - return PEVENT_ERRNO__MEM_ALLOC_FAILED; - - return 0; -} - -static void free_events(struct event_list *events) -{ - struct event_list *event; - - while (events) { - event = events; - events = events->next; - free(event); - } -} - -static enum pevent_errno -create_arg_item(struct event_format *event, const char *token, - enum event_type type, struct filter_arg **parg, char *error_str) -{ - struct format_field *field; - struct filter_arg *arg; - - arg = allocate_arg(); - if (arg == NULL) { - show_error(error_str, "failed to allocate filter arg"); - return PEVENT_ERRNO__MEM_ALLOC_FAILED; - } - - switch (type) { - - case EVENT_SQUOTE: - case EVENT_DQUOTE: - arg->type = FILTER_ARG_VALUE; - arg->value.type = - type == EVENT_DQUOTE ? FILTER_STRING : FILTER_CHAR; - arg->value.str = strdup(token); - if (!arg->value.str) { - free_arg(arg); - show_error(error_str, "failed to allocate string filter arg"); - return PEVENT_ERRNO__MEM_ALLOC_FAILED; - } - break; - case EVENT_ITEM: - /* if it is a number, then convert it */ - if (isdigit(token[0])) { - arg->type = FILTER_ARG_VALUE; - arg->value.type = FILTER_NUMBER; - arg->value.val = strtoull(token, NULL, 0); - break; - } - /* Consider this a field */ - field = pevent_find_any_field(event, token); - if (!field) { - /* If token is 'COMM' or 'CPU' then it is special */ - if (strcmp(token, COMM) == 0) { - field = &comm; - } else if (strcmp(token, CPU) == 0) { - field = &cpu; - } else { - /* not a field, Make it false */ - arg->type = FILTER_ARG_BOOLEAN; - arg->boolean.value = FILTER_FALSE; - break; - } - } - arg->type = FILTER_ARG_FIELD; - arg->field.field = field; - break; - default: - free_arg(arg); - show_error(error_str, "expected a value but found %s", token); - return PEVENT_ERRNO__UNEXPECTED_TYPE; - } - *parg = arg; - return 0; -} - -static struct filter_arg * -create_arg_op(enum filter_op_type btype) -{ - struct filter_arg *arg; - - arg = allocate_arg(); - if (!arg) - return NULL; - - arg->type = FILTER_ARG_OP; - arg->op.type = btype; - - return arg; -} - -static struct filter_arg * -create_arg_exp(enum filter_exp_type etype) -{ - struct filter_arg *arg; - - arg = allocate_arg(); - if (!arg) - return NULL; - - arg->type = FILTER_ARG_EXP; - arg->op.type = etype; - - return arg; -} - -static struct filter_arg * -create_arg_cmp(enum filter_exp_type etype) -{ - struct filter_arg *arg; - - arg = allocate_arg(); - if (!arg) - return NULL; - - /* Use NUM and change if necessary */ - arg->type = FILTER_ARG_NUM; - arg->op.type = etype; - - return arg; -} - -static enum pevent_errno -add_right(struct filter_arg *op, struct filter_arg *arg, char *error_str) -{ - struct filter_arg *left; - char *str; - int op_type; - int ret; - - switch (op->type) { - case FILTER_ARG_EXP: - if (op->exp.right) - goto out_fail; - op->exp.right = arg; - break; - - case FILTER_ARG_OP: - if (op->op.right) - goto out_fail; - op->op.right = arg; - break; - - case FILTER_ARG_NUM: - if (op->op.right) - goto out_fail; - /* - * The arg must be num, str, or field - */ - switch (arg->type) { - case FILTER_ARG_VALUE: - case FILTER_ARG_FIELD: - break; - default: - show_error(error_str, "Illegal rvalue"); - return PEVENT_ERRNO__ILLEGAL_RVALUE; - } - - /* - * Depending on the type, we may need to - * convert this to a string or regex. - */ - switch (arg->value.type) { - case FILTER_CHAR: - /* - * A char should be converted to number if - * the string is 1 byte, and the compare - * is not a REGEX. - */ - if (strlen(arg->value.str) == 1 && - op->num.type != FILTER_CMP_REGEX && - op->num.type != FILTER_CMP_NOT_REGEX) { - arg->value.type = FILTER_NUMBER; - goto do_int; - } - /* fall through */ - case FILTER_STRING: - - /* convert op to a string arg */ - op_type = op->num.type; - left = op->num.left; - str = arg->value.str; - - /* reset the op for the new field */ - memset(op, 0, sizeof(*op)); - - /* - * If left arg was a field not found then - * NULL the entire op. - */ - if (left->type == FILTER_ARG_BOOLEAN) { - free_arg(left); - free_arg(arg); - op->type = FILTER_ARG_BOOLEAN; - op->boolean.value = FILTER_FALSE; - break; - } - - /* Left arg must be a field */ - if (left->type != FILTER_ARG_FIELD) { - show_error(error_str, - "Illegal lvalue for string comparison"); - return PEVENT_ERRNO__ILLEGAL_LVALUE; - } - - /* Make sure this is a valid string compare */ - switch (op_type) { - case FILTER_CMP_EQ: - op_type = FILTER_CMP_MATCH; - break; - case FILTER_CMP_NE: - op_type = FILTER_CMP_NOT_MATCH; - break; - - case FILTER_CMP_REGEX: - case FILTER_CMP_NOT_REGEX: - ret = regcomp(&op->str.reg, str, REG_ICASE|REG_NOSUB); - if (ret) { - show_error(error_str, - "RegEx '%s' did not compute", - str); - return PEVENT_ERRNO__INVALID_REGEX; - } - break; - default: - show_error(error_str, - "Illegal comparison for string"); - return PEVENT_ERRNO__ILLEGAL_STRING_CMP; - } - - op->type = FILTER_ARG_STR; - op->str.type = op_type; - op->str.field = left->field.field; - op->str.val = strdup(str); - if (!op->str.val) { - show_error(error_str, "Failed to allocate string filter"); - return PEVENT_ERRNO__MEM_ALLOC_FAILED; - } - /* - * Need a buffer to copy data for tests - */ - op->str.buffer = malloc(op->str.field->size + 1); - if (!op->str.buffer) { - show_error(error_str, "Failed to allocate string filter"); - return PEVENT_ERRNO__MEM_ALLOC_FAILED; - } - /* Null terminate this buffer */ - op->str.buffer[op->str.field->size] = 0; - - /* We no longer have left or right args */ - free_arg(arg); - free_arg(left); - - break; - - case FILTER_NUMBER: - - do_int: - switch (op->num.type) { - case FILTER_CMP_REGEX: - case FILTER_CMP_NOT_REGEX: - show_error(error_str, - "Op not allowed with integers"); - return PEVENT_ERRNO__ILLEGAL_INTEGER_CMP; - - default: - break; - } - - /* numeric compare */ - op->num.right = arg; - break; - default: - goto out_fail; - } - break; - default: - goto out_fail; - } - - return 0; - - out_fail: - show_error(error_str, "Syntax error"); - return PEVENT_ERRNO__SYNTAX_ERROR; -} - -static struct filter_arg * -rotate_op_right(struct filter_arg *a, struct filter_arg *b) -{ - struct filter_arg *arg; - - arg = a->op.right; - a->op.right = b; - return arg; -} - -static enum pevent_errno add_left(struct filter_arg *op, struct filter_arg *arg) -{ - switch (op->type) { - case FILTER_ARG_EXP: - if (arg->type == FILTER_ARG_OP) - arg = rotate_op_right(arg, op); - op->exp.left = arg; - break; - - case FILTER_ARG_OP: - op->op.left = arg; - break; - case FILTER_ARG_NUM: - if (arg->type == FILTER_ARG_OP) - arg = rotate_op_right(arg, op); - - /* left arg of compares must be a field */ - if (arg->type != FILTER_ARG_FIELD && - arg->type != FILTER_ARG_BOOLEAN) - return PEVENT_ERRNO__INVALID_ARG_TYPE; - op->num.left = arg; - break; - default: - return PEVENT_ERRNO__INVALID_ARG_TYPE; - } - return 0; -} - -enum op_type { - OP_NONE, - OP_BOOL, - OP_NOT, - OP_EXP, - OP_CMP, -}; - -static enum op_type process_op(const char *token, - enum filter_op_type *btype, - enum filter_cmp_type *ctype, - enum filter_exp_type *etype) -{ - *btype = FILTER_OP_NOT; - *etype = FILTER_EXP_NONE; - *ctype = FILTER_CMP_NONE; - - if (strcmp(token, "&&") == 0) - *btype = FILTER_OP_AND; - else if (strcmp(token, "||") == 0) - *btype = FILTER_OP_OR; - else if (strcmp(token, "!") == 0) - return OP_NOT; - - if (*btype != FILTER_OP_NOT) - return OP_BOOL; - - /* Check for value expressions */ - if (strcmp(token, "+") == 0) { - *etype = FILTER_EXP_ADD; - } else if (strcmp(token, "-") == 0) { - *etype = FILTER_EXP_SUB; - } else if (strcmp(token, "*") == 0) { - *etype = FILTER_EXP_MUL; - } else if (strcmp(token, "/") == 0) { - *etype = FILTER_EXP_DIV; - } else if (strcmp(token, "%") == 0) { - *etype = FILTER_EXP_MOD; - } else if (strcmp(token, ">>") == 0) { - *etype = FILTER_EXP_RSHIFT; - } else if (strcmp(token, "<<") == 0) { - *etype = FILTER_EXP_LSHIFT; - } else if (strcmp(token, "&") == 0) { - *etype = FILTER_EXP_AND; - } else if (strcmp(token, "|") == 0) { - *etype = FILTER_EXP_OR; - } else if (strcmp(token, "^") == 0) { - *etype = FILTER_EXP_XOR; - } else if (strcmp(token, "~") == 0) - *etype = FILTER_EXP_NOT; - - if (*etype != FILTER_EXP_NONE) - return OP_EXP; - - /* Check for compares */ - if (strcmp(token, "==") == 0) - *ctype = FILTER_CMP_EQ; - else if (strcmp(token, "!=") == 0) - *ctype = FILTER_CMP_NE; - else if (strcmp(token, "<") == 0) - *ctype = FILTER_CMP_LT; - else if (strcmp(token, ">") == 0) - *ctype = FILTER_CMP_GT; - else if (strcmp(token, "<=") == 0) - *ctype = FILTER_CMP_LE; - else if (strcmp(token, ">=") == 0) - *ctype = FILTER_CMP_GE; - else if (strcmp(token, "=~") == 0) - *ctype = FILTER_CMP_REGEX; - else if (strcmp(token, "!~") == 0) - *ctype = FILTER_CMP_NOT_REGEX; - else - return OP_NONE; - - return OP_CMP; -} - -static int check_op_done(struct filter_arg *arg) -{ - switch (arg->type) { - case FILTER_ARG_EXP: - return arg->exp.right != NULL; - - case FILTER_ARG_OP: - return arg->op.right != NULL; - - case FILTER_ARG_NUM: - return arg->num.right != NULL; - - case FILTER_ARG_STR: - /* A string conversion is always done */ - return 1; - - case FILTER_ARG_BOOLEAN: - /* field not found, is ok */ - return 1; - - default: - return 0; - } -} - -enum filter_vals { - FILTER_VAL_NORM, - FILTER_VAL_FALSE, - FILTER_VAL_TRUE, -}; - -static enum pevent_errno -reparent_op_arg(struct filter_arg *parent, struct filter_arg *old_child, - struct filter_arg *arg, char *error_str) -{ - struct filter_arg *other_child; - struct filter_arg **ptr; - - if (parent->type != FILTER_ARG_OP && - arg->type != FILTER_ARG_OP) { - show_error(error_str, "can not reparent other than OP"); - return PEVENT_ERRNO__REPARENT_NOT_OP; - } - - /* Get the sibling */ - if (old_child->op.right == arg) { - ptr = &old_child->op.right; - other_child = old_child->op.left; - } else if (old_child->op.left == arg) { - ptr = &old_child->op.left; - other_child = old_child->op.right; - } else { - show_error(error_str, "Error in reparent op, find other child"); - return PEVENT_ERRNO__REPARENT_FAILED; - } - - /* Detach arg from old_child */ - *ptr = NULL; - - /* Check for root */ - if (parent == old_child) { - free_arg(other_child); - *parent = *arg; - /* Free arg without recussion */ - free(arg); - return 0; - } - - if (parent->op.right == old_child) - ptr = &parent->op.right; - else if (parent->op.left == old_child) - ptr = &parent->op.left; - else { - show_error(error_str, "Error in reparent op"); - return PEVENT_ERRNO__REPARENT_FAILED; - } - - *ptr = arg; - - free_arg(old_child); - return 0; -} - -/* Returns either filter_vals (success) or pevent_errno (failfure) */ -static int test_arg(struct filter_arg *parent, struct filter_arg *arg, - char *error_str) -{ - int lval, rval; - - switch (arg->type) { - - /* bad case */ - case FILTER_ARG_BOOLEAN: - return FILTER_VAL_FALSE + arg->boolean.value; - - /* good cases: */ - case FILTER_ARG_STR: - case FILTER_ARG_VALUE: - case FILTER_ARG_FIELD: - return FILTER_VAL_NORM; - - case FILTER_ARG_EXP: - lval = test_arg(arg, arg->exp.left, error_str); - if (lval != FILTER_VAL_NORM) - return lval; - rval = test_arg(arg, arg->exp.right, error_str); - if (rval != FILTER_VAL_NORM) - return rval; - return FILTER_VAL_NORM; - - case FILTER_ARG_NUM: - lval = test_arg(arg, arg->num.left, error_str); - if (lval != FILTER_VAL_NORM) - return lval; - rval = test_arg(arg, arg->num.right, error_str); - if (rval != FILTER_VAL_NORM) - return rval; - return FILTER_VAL_NORM; - - case FILTER_ARG_OP: - if (arg->op.type != FILTER_OP_NOT) { - lval = test_arg(arg, arg->op.left, error_str); - switch (lval) { - case FILTER_VAL_NORM: - break; - case FILTER_VAL_TRUE: - if (arg->op.type == FILTER_OP_OR) - return FILTER_VAL_TRUE; - rval = test_arg(arg, arg->op.right, error_str); - if (rval != FILTER_VAL_NORM) - return rval; - - return reparent_op_arg(parent, arg, arg->op.right, - error_str); - - case FILTER_VAL_FALSE: - if (arg->op.type == FILTER_OP_AND) - return FILTER_VAL_FALSE; - rval = test_arg(arg, arg->op.right, error_str); - if (rval != FILTER_VAL_NORM) - return rval; - - return reparent_op_arg(parent, arg, arg->op.right, - error_str); - - default: - return lval; - } - } - - rval = test_arg(arg, arg->op.right, error_str); - switch (rval) { - case FILTER_VAL_NORM: - default: - break; - - case FILTER_VAL_TRUE: - if (arg->op.type == FILTER_OP_OR) - return FILTER_VAL_TRUE; - if (arg->op.type == FILTER_OP_NOT) - return FILTER_VAL_FALSE; - - return reparent_op_arg(parent, arg, arg->op.left, - error_str); - - case FILTER_VAL_FALSE: - if (arg->op.type == FILTER_OP_AND) - return FILTER_VAL_FALSE; - if (arg->op.type == FILTER_OP_NOT) - return FILTER_VAL_TRUE; - - return reparent_op_arg(parent, arg, arg->op.left, - error_str); - } - - return rval; - default: - show_error(error_str, "bad arg in filter tree"); - return PEVENT_ERRNO__BAD_FILTER_ARG; - } - return FILTER_VAL_NORM; -} - -/* Remove any unknown event fields */ -static int collapse_tree(struct filter_arg *arg, - struct filter_arg **arg_collapsed, char *error_str) -{ - int ret; - - ret = test_arg(arg, arg, error_str); - switch (ret) { - case FILTER_VAL_NORM: - break; - - case FILTER_VAL_TRUE: - case FILTER_VAL_FALSE: - free_arg(arg); - arg = allocate_arg(); - if (arg) { - arg->type = FILTER_ARG_BOOLEAN; - arg->boolean.value = ret == FILTER_VAL_TRUE; - } else { - show_error(error_str, "Failed to allocate filter arg"); - ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; - } - break; - - default: - /* test_arg() already set the error_str */ - free_arg(arg); - arg = NULL; - break; - } - - *arg_collapsed = arg; - return ret; -} - -static enum pevent_errno -process_filter(struct event_format *event, struct filter_arg **parg, - char *error_str, int not) -{ - enum event_type type; - char *token = NULL; - struct filter_arg *current_op = NULL; - struct filter_arg *current_exp = NULL; - struct filter_arg *left_item = NULL; - struct filter_arg *arg = NULL; - enum op_type op_type; - enum filter_op_type btype; - enum filter_exp_type etype; - enum filter_cmp_type ctype; - enum pevent_errno ret; - - *parg = NULL; - - do { - free(token); - type = read_token(&token); - switch (type) { - case EVENT_SQUOTE: - case EVENT_DQUOTE: - case EVENT_ITEM: - ret = create_arg_item(event, token, type, &arg, error_str); - if (ret < 0) - goto fail; - if (!left_item) - left_item = arg; - else if (current_exp) { - ret = add_right(current_exp, arg, error_str); - if (ret < 0) - goto fail; - left_item = NULL; - /* Not's only one one expression */ - if (not) { - arg = NULL; - if (current_op) - goto fail_syntax; - free(token); - *parg = current_exp; - return 0; - } - } else - goto fail_syntax; - arg = NULL; - break; - - case EVENT_DELIM: - if (*token == ',') { - show_error(error_str, "Illegal token ','"); - ret = PEVENT_ERRNO__ILLEGAL_TOKEN; - goto fail; - } - - if (*token == '(') { - if (left_item) { - show_error(error_str, - "Open paren can not come after item"); - ret = PEVENT_ERRNO__INVALID_PAREN; - goto fail; - } - if (current_exp) { - show_error(error_str, - "Open paren can not come after expression"); - ret = PEVENT_ERRNO__INVALID_PAREN; - goto fail; - } - - ret = process_filter(event, &arg, error_str, 0); - if (ret != PEVENT_ERRNO__UNBALANCED_PAREN) { - if (ret == 0) { - show_error(error_str, - "Unbalanced number of '('"); - ret = PEVENT_ERRNO__UNBALANCED_PAREN; - } - goto fail; - } - ret = 0; - - /* A not wants just one expression */ - if (not) { - if (current_op) - goto fail_syntax; - *parg = arg; - return 0; - } - - if (current_op) - ret = add_right(current_op, arg, error_str); - else - current_exp = arg; - - if (ret < 0) - goto fail; - - } else { /* ')' */ - if (!current_op && !current_exp) - goto fail_syntax; - - /* Make sure everything is finished at this level */ - if (current_exp && !check_op_done(current_exp)) - goto fail_syntax; - if (current_op && !check_op_done(current_op)) - goto fail_syntax; - - if (current_op) - *parg = current_op; - else - *parg = current_exp; - free(token); - return PEVENT_ERRNO__UNBALANCED_PAREN; - } - break; - - case EVENT_OP: - op_type = process_op(token, &btype, &ctype, &etype); - - /* All expect a left arg except for NOT */ - switch (op_type) { - case OP_BOOL: - /* Logic ops need a left expression */ - if (!current_exp && !current_op) - goto fail_syntax; - /* fall through */ - case OP_NOT: - /* logic only processes ops and exp */ - if (left_item) - goto fail_syntax; - break; - case OP_EXP: - case OP_CMP: - if (!left_item) - goto fail_syntax; - break; - case OP_NONE: - show_error(error_str, - "Unknown op token %s", token); - ret = PEVENT_ERRNO__UNKNOWN_TOKEN; - goto fail; - } - - ret = 0; - switch (op_type) { - case OP_BOOL: - arg = create_arg_op(btype); - if (arg == NULL) - goto fail_alloc; - if (current_op) - ret = add_left(arg, current_op); - else - ret = add_left(arg, current_exp); - current_op = arg; - current_exp = NULL; - break; - - case OP_NOT: - arg = create_arg_op(btype); - if (arg == NULL) - goto fail_alloc; - if (current_op) - ret = add_right(current_op, arg, error_str); - if (ret < 0) - goto fail; - current_exp = arg; - ret = process_filter(event, &arg, error_str, 1); - if (ret < 0) - goto fail; - ret = add_right(current_exp, arg, error_str); - if (ret < 0) - goto fail; - break; - - case OP_EXP: - case OP_CMP: - if (op_type == OP_EXP) - arg = create_arg_exp(etype); - else - arg = create_arg_cmp(ctype); - if (arg == NULL) - goto fail_alloc; - - if (current_op) - ret = add_right(current_op, arg, error_str); - if (ret < 0) - goto fail; - ret = add_left(arg, left_item); - if (ret < 0) { - arg = NULL; - goto fail_syntax; - } - current_exp = arg; - break; - default: - break; - } - arg = NULL; - if (ret < 0) - goto fail_syntax; - break; - case EVENT_NONE: - break; - case EVENT_ERROR: - goto fail_alloc; - default: - goto fail_syntax; - } - } while (type != EVENT_NONE); - - if (!current_op && !current_exp) - goto fail_syntax; - - if (!current_op) - current_op = current_exp; - - ret = collapse_tree(current_op, parg, error_str); - /* collapse_tree() may free current_op, and updates parg accordingly */ - current_op = NULL; - if (ret < 0) - goto fail; - - free(token); - return 0; - - fail_alloc: - show_error(error_str, "failed to allocate filter arg"); - ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; - goto fail; - fail_syntax: - show_error(error_str, "Syntax error"); - ret = PEVENT_ERRNO__SYNTAX_ERROR; - fail: - free_arg(current_op); - free_arg(current_exp); - free_arg(arg); - free(token); - return ret; -} - -static enum pevent_errno -process_event(struct event_format *event, const char *filter_str, - struct filter_arg **parg, char *error_str) -{ - int ret; - - pevent_buffer_init(filter_str, strlen(filter_str)); - - ret = process_filter(event, parg, error_str, 0); - if (ret < 0) - return ret; - - /* If parg is NULL, then make it into FALSE */ - if (!*parg) { - *parg = allocate_arg(); - if (*parg == NULL) - return PEVENT_ERRNO__MEM_ALLOC_FAILED; - - (*parg)->type = FILTER_ARG_BOOLEAN; - (*parg)->boolean.value = FILTER_FALSE; - } - - return 0; -} - -static enum pevent_errno -filter_event(struct event_filter *filter, struct event_format *event, - const char *filter_str, char *error_str) -{ - struct filter_type *filter_type; - struct filter_arg *arg; - enum pevent_errno ret; - - if (filter_str) { - ret = process_event(event, filter_str, &arg, error_str); - if (ret < 0) - return ret; - - } else { - /* just add a TRUE arg */ - arg = allocate_arg(); - if (arg == NULL) - return PEVENT_ERRNO__MEM_ALLOC_FAILED; - - arg->type = FILTER_ARG_BOOLEAN; - arg->boolean.value = FILTER_TRUE; - } - - filter_type = add_filter_type(filter, event->id); - if (filter_type == NULL) - return PEVENT_ERRNO__MEM_ALLOC_FAILED; - - if (filter_type->filter) - free_arg(filter_type->filter); - filter_type->filter = arg; - - return 0; -} - -static void filter_init_error_buf(struct event_filter *filter) -{ - /* clear buffer to reset show error */ - pevent_buffer_init("", 0); - filter->error_buffer[0] = '\0'; -} - -/** - * pevent_filter_add_filter_str - add a new filter - * @filter: the event filter to add to - * @filter_str: the filter string that contains the filter - * - * Returns 0 if the filter was successfully added or a - * negative error code. Use pevent_filter_strerror() to see - * actual error message in case of error. - */ -enum pevent_errno pevent_filter_add_filter_str(struct event_filter *filter, - const char *filter_str) -{ - struct pevent *pevent = filter->pevent; - struct event_list *event; - struct event_list *events = NULL; - const char *filter_start; - const char *next_event; - char *this_event; - char *event_name = NULL; - char *sys_name = NULL; - char *sp; - enum pevent_errno rtn = 0; /* PEVENT_ERRNO__SUCCESS */ - int len; - int ret; - - filter_init_error_buf(filter); - - filter_start = strchr(filter_str, ':'); - if (filter_start) - len = filter_start - filter_str; - else - len = strlen(filter_str); - - do { - next_event = strchr(filter_str, ','); - if (next_event && - (!filter_start || next_event < filter_start)) - len = next_event - filter_str; - else if (filter_start) - len = filter_start - filter_str; - else - len = strlen(filter_str); - - this_event = malloc(len + 1); - if (this_event == NULL) { - /* This can only happen when events is NULL, but still */ - free_events(events); - return PEVENT_ERRNO__MEM_ALLOC_FAILED; - } - memcpy(this_event, filter_str, len); - this_event[len] = 0; - - if (next_event) - next_event++; - - filter_str = next_event; - - sys_name = strtok_r(this_event, "/", &sp); - event_name = strtok_r(NULL, "/", &sp); - - if (!sys_name) { - /* This can only happen when events is NULL, but still */ - free_events(events); - free(this_event); - return PEVENT_ERRNO__FILTER_NOT_FOUND; - } - - /* Find this event */ - ret = find_event(pevent, &events, strim(sys_name), strim(event_name)); - if (ret < 0) { - free_events(events); - free(this_event); - return ret; - } - free(this_event); - } while (filter_str); - - /* Skip the ':' */ - if (filter_start) - filter_start++; - - /* filter starts here */ - for (event = events; event; event = event->next) { - ret = filter_event(filter, event->event, filter_start, - filter->error_buffer); - /* Failures are returned if a parse error happened */ - if (ret < 0) - rtn = ret; - - if (ret >= 0 && pevent->test_filters) { - char *test; - test = pevent_filter_make_string(filter, event->event->id); - if (test) { - printf(" '%s: %s'\n", event->event->name, test); - free(test); - } - } - } - - free_events(events); - - if (rtn >= 0 && pevent->test_filters) - exit(0); - - return rtn; -} - -static void free_filter_type(struct filter_type *filter_type) -{ - free_arg(filter_type->filter); -} - -/** - * pevent_filter_strerror - fill error message in a buffer - * @filter: the event filter contains error - * @err: the error code - * @buf: the buffer to be filled in - * @buflen: the size of the buffer - * - * Returns 0 if message was filled successfully, -1 if error - */ -int pevent_filter_strerror(struct event_filter *filter, enum pevent_errno err, - char *buf, size_t buflen) -{ - if (err <= __PEVENT_ERRNO__START || err >= __PEVENT_ERRNO__END) - return -1; - - if (strlen(filter->error_buffer) > 0) { - size_t len = snprintf(buf, buflen, "%s", filter->error_buffer); - - if (len > buflen) - return -1; - return 0; - } - - return pevent_strerror(filter->pevent, err, buf, buflen); -} - -/** - * pevent_filter_remove_event - remove a filter for an event - * @filter: the event filter to remove from - * @event_id: the event to remove a filter for - * - * Removes the filter saved for an event defined by @event_id - * from the @filter. - * - * Returns 1: if an event was removed - * 0: if the event was not found - */ -int pevent_filter_remove_event(struct event_filter *filter, - int event_id) -{ - struct filter_type *filter_type; - unsigned long len; - - if (!filter->filters) - return 0; - - filter_type = find_filter_type(filter, event_id); - - if (!filter_type) - return 0; - - free_filter_type(filter_type); - - /* The filter_type points into the event_filters array */ - len = (unsigned long)(filter->event_filters + filter->filters) - - (unsigned long)(filter_type + 1); - - memmove(filter_type, filter_type + 1, len); - filter->filters--; - - memset(&filter->event_filters[filter->filters], 0, - sizeof(*filter_type)); - - return 1; -} - -/** - * pevent_filter_reset - clear all filters in a filter - * @filter: the event filter to reset - * - * Removes all filters from a filter and resets it. - */ -void pevent_filter_reset(struct event_filter *filter) -{ - int i; - - for (i = 0; i < filter->filters; i++) - free_filter_type(&filter->event_filters[i]); - - free(filter->event_filters); - filter->filters = 0; - filter->event_filters = NULL; -} - -void pevent_filter_free(struct event_filter *filter) -{ - pevent_unref(filter->pevent); - - pevent_filter_reset(filter); - - free(filter); -} - -static char *arg_to_str(struct event_filter *filter, struct filter_arg *arg); - -static int copy_filter_type(struct event_filter *filter, - struct event_filter *source, - struct filter_type *filter_type) -{ - struct filter_arg *arg; - struct event_format *event; - const char *sys; - const char *name; - char *str; - - /* Can't assume that the pevent's are the same */ - sys = filter_type->event->system; - name = filter_type->event->name; - event = pevent_find_event_by_name(filter->pevent, sys, name); - if (!event) - return -1; - - str = arg_to_str(source, filter_type->filter); - if (!str) - return -1; - - if (strcmp(str, "TRUE") == 0 || strcmp(str, "FALSE") == 0) { - /* Add trivial event */ - arg = allocate_arg(); - if (arg == NULL) - return -1; - - arg->type = FILTER_ARG_BOOLEAN; - if (strcmp(str, "TRUE") == 0) - arg->boolean.value = 1; - else - arg->boolean.value = 0; - - filter_type = add_filter_type(filter, event->id); - if (filter_type == NULL) - return -1; - - filter_type->filter = arg; - - free(str); - return 0; - } - - filter_event(filter, event, str, NULL); - free(str); - - return 0; -} - -/** - * pevent_filter_copy - copy a filter using another filter - * @dest - the filter to copy to - * @source - the filter to copy from - * - * Returns 0 on success and -1 if not all filters were copied - */ -int pevent_filter_copy(struct event_filter *dest, struct event_filter *source) -{ - int ret = 0; - int i; - - pevent_filter_reset(dest); - - for (i = 0; i < source->filters; i++) { - if (copy_filter_type(dest, source, &source->event_filters[i])) - ret = -1; - } - return ret; -} - - -/** - * pevent_update_trivial - update the trivial filters with the given filter - * @dest - the filter to update - * @source - the filter as the source of the update - * @type - the type of trivial filter to update. - * - * Scan dest for trivial events matching @type to replace with the source. - * - * Returns 0 on success and -1 if there was a problem updating, but - * events may have still been updated on error. - */ -int pevent_update_trivial(struct event_filter *dest, struct event_filter *source, - enum filter_trivial_type type) -{ - struct pevent *src_pevent; - struct pevent *dest_pevent; - struct event_format *event; - struct filter_type *filter_type; - struct filter_arg *arg; - char *str; - int i; - - src_pevent = source->pevent; - dest_pevent = dest->pevent; - - /* Do nothing if either of the filters has nothing to filter */ - if (!dest->filters || !source->filters) - return 0; - - for (i = 0; i < dest->filters; i++) { - filter_type = &dest->event_filters[i]; - arg = filter_type->filter; - if (arg->type != FILTER_ARG_BOOLEAN) - continue; - if ((arg->boolean.value && type == FILTER_TRIVIAL_FALSE) || - (!arg->boolean.value && type == FILTER_TRIVIAL_TRUE)) - continue; - - event = filter_type->event; - - if (src_pevent != dest_pevent) { - /* do a look up */ - event = pevent_find_event_by_name(src_pevent, - event->system, - event->name); - if (!event) - return -1; - } - - str = pevent_filter_make_string(source, event->id); - if (!str) - continue; - - /* Don't bother if the filter is trivial too */ - if (strcmp(str, "TRUE") != 0 && strcmp(str, "FALSE") != 0) - filter_event(dest, event, str, NULL); - free(str); - } - return 0; -} - -/** - * pevent_filter_clear_trivial - clear TRUE and FALSE filters - * @filter: the filter to remove trivial filters from - * @type: remove only true, false, or both - * - * Removes filters that only contain a TRUE or FALES boolean arg. - * - * Returns 0 on success and -1 if there was a problem. - */ -int pevent_filter_clear_trivial(struct event_filter *filter, - enum filter_trivial_type type) -{ - struct filter_type *filter_type; - int count = 0; - int *ids = NULL; - int i; - - if (!filter->filters) - return 0; - - /* - * Two steps, first get all ids with trivial filters. - * then remove those ids. - */ - for (i = 0; i < filter->filters; i++) { - int *new_ids; - - filter_type = &filter->event_filters[i]; - if (filter_type->filter->type != FILTER_ARG_BOOLEAN) - continue; - switch (type) { - case FILTER_TRIVIAL_FALSE: - if (filter_type->filter->boolean.value) - continue; - case FILTER_TRIVIAL_TRUE: - if (!filter_type->filter->boolean.value) - continue; - default: - break; - } - - new_ids = realloc(ids, sizeof(*ids) * (count + 1)); - if (!new_ids) { - free(ids); - return -1; - } - - ids = new_ids; - ids[count++] = filter_type->event_id; - } - - if (!count) - return 0; - - for (i = 0; i < count; i++) - pevent_filter_remove_event(filter, ids[i]); - - free(ids); - return 0; -} - -/** - * pevent_filter_event_has_trivial - return true event contains trivial filter - * @filter: the filter with the information - * @event_id: the id of the event to test - * @type: trivial type to test for (TRUE, FALSE, EITHER) - * - * Returns 1 if the event contains a matching trivial type - * otherwise 0. - */ -int pevent_filter_event_has_trivial(struct event_filter *filter, - int event_id, - enum filter_trivial_type type) -{ - struct filter_type *filter_type; - - if (!filter->filters) - return 0; - - filter_type = find_filter_type(filter, event_id); - - if (!filter_type) - return 0; - - if (filter_type->filter->type != FILTER_ARG_BOOLEAN) - return 0; - - switch (type) { - case FILTER_TRIVIAL_FALSE: - return !filter_type->filter->boolean.value; - - case FILTER_TRIVIAL_TRUE: - return filter_type->filter->boolean.value; - default: - return 1; - } -} - -static int test_filter(struct event_format *event, struct filter_arg *arg, - struct pevent_record *record, enum pevent_errno *err); - -static const char * -get_comm(struct event_format *event, struct pevent_record *record) -{ - const char *comm; - int pid; - - pid = pevent_data_pid(event->pevent, record); - comm = pevent_data_comm_from_pid(event->pevent, pid); - return comm; -} - -static unsigned long long -get_value(struct event_format *event, - struct format_field *field, struct pevent_record *record) -{ - unsigned long long val; - - /* Handle our dummy "comm" field */ - if (field == &comm) { - const char *name; - - name = get_comm(event, record); - return (unsigned long)name; - } - - /* Handle our dummy "cpu" field */ - if (field == &cpu) - return record->cpu; - - pevent_read_number_field(field, record->data, &val); - - if (!(field->flags & FIELD_IS_SIGNED)) - return val; - - switch (field->size) { - case 1: - return (char)val; - case 2: - return (short)val; - case 4: - return (int)val; - case 8: - return (long long)val; - } - return val; -} - -static unsigned long long -get_arg_value(struct event_format *event, struct filter_arg *arg, - struct pevent_record *record, enum pevent_errno *err); - -static unsigned long long -get_exp_value(struct event_format *event, struct filter_arg *arg, - struct pevent_record *record, enum pevent_errno *err) -{ - unsigned long long lval, rval; - - lval = get_arg_value(event, arg->exp.left, record, err); - rval = get_arg_value(event, arg->exp.right, record, err); - - if (*err) { - /* - * There was an error, no need to process anymore. - */ - return 0; - } - - switch (arg->exp.type) { - case FILTER_EXP_ADD: - return lval + rval; - - case FILTER_EXP_SUB: - return lval - rval; - - case FILTER_EXP_MUL: - return lval * rval; - - case FILTER_EXP_DIV: - return lval / rval; - - case FILTER_EXP_MOD: - return lval % rval; - - case FILTER_EXP_RSHIFT: - return lval >> rval; - - case FILTER_EXP_LSHIFT: - return lval << rval; - - case FILTER_EXP_AND: - return lval & rval; - - case FILTER_EXP_OR: - return lval | rval; - - case FILTER_EXP_XOR: - return lval ^ rval; - - case FILTER_EXP_NOT: - default: - if (!*err) - *err = PEVENT_ERRNO__INVALID_EXP_TYPE; - } - return 0; -} - -static unsigned long long -get_arg_value(struct event_format *event, struct filter_arg *arg, - struct pevent_record *record, enum pevent_errno *err) -{ - switch (arg->type) { - case FILTER_ARG_FIELD: - return get_value(event, arg->field.field, record); - - case FILTER_ARG_VALUE: - if (arg->value.type != FILTER_NUMBER) { - if (!*err) - *err = PEVENT_ERRNO__NOT_A_NUMBER; - } - return arg->value.val; - - case FILTER_ARG_EXP: - return get_exp_value(event, arg, record, err); - - default: - if (!*err) - *err = PEVENT_ERRNO__INVALID_ARG_TYPE; - } - return 0; -} - -static int test_num(struct event_format *event, struct filter_arg *arg, - struct pevent_record *record, enum pevent_errno *err) -{ - unsigned long long lval, rval; - - lval = get_arg_value(event, arg->num.left, record, err); - rval = get_arg_value(event, arg->num.right, record, err); - - if (*err) { - /* - * There was an error, no need to process anymore. - */ - return 0; - } - - switch (arg->num.type) { - case FILTER_CMP_EQ: - return lval == rval; - - case FILTER_CMP_NE: - return lval != rval; - - case FILTER_CMP_GT: - return lval > rval; - - case FILTER_CMP_LT: - return lval < rval; - - case FILTER_CMP_GE: - return lval >= rval; - - case FILTER_CMP_LE: - return lval <= rval; - - default: - if (!*err) - *err = PEVENT_ERRNO__ILLEGAL_INTEGER_CMP; - return 0; - } -} - -static const char *get_field_str(struct filter_arg *arg, struct pevent_record *record) -{ - struct event_format *event; - struct pevent *pevent; - unsigned long long addr; - const char *val = NULL; - char hex[64]; - - /* If the field is not a string convert it */ - if (arg->str.field->flags & FIELD_IS_STRING) { - val = record->data + arg->str.field->offset; - - /* - * We need to copy the data since we can't be sure the field - * is null terminated. - */ - if (*(val + arg->str.field->size - 1)) { - /* copy it */ - memcpy(arg->str.buffer, val, arg->str.field->size); - /* the buffer is already NULL terminated */ - val = arg->str.buffer; - } - - } else { - event = arg->str.field->event; - pevent = event->pevent; - addr = get_value(event, arg->str.field, record); - - if (arg->str.field->flags & (FIELD_IS_POINTER | FIELD_IS_LONG)) - /* convert to a kernel symbol */ - val = pevent_find_function(pevent, addr); - - if (val == NULL) { - /* just use the hex of the string name */ - snprintf(hex, 64, "0x%llx", addr); - val = hex; - } - } - - return val; -} - -static int test_str(struct event_format *event, struct filter_arg *arg, - struct pevent_record *record, enum pevent_errno *err) -{ - const char *val; - - if (arg->str.field == &comm) - val = get_comm(event, record); - else - val = get_field_str(arg, record); - - switch (arg->str.type) { - case FILTER_CMP_MATCH: - return strcmp(val, arg->str.val) == 0; - - case FILTER_CMP_NOT_MATCH: - return strcmp(val, arg->str.val) != 0; - - case FILTER_CMP_REGEX: - /* Returns zero on match */ - return !regexec(&arg->str.reg, val, 0, NULL, 0); - - case FILTER_CMP_NOT_REGEX: - return regexec(&arg->str.reg, val, 0, NULL, 0); - - default: - if (!*err) - *err = PEVENT_ERRNO__ILLEGAL_STRING_CMP; - return 0; - } -} - -static int test_op(struct event_format *event, struct filter_arg *arg, - struct pevent_record *record, enum pevent_errno *err) -{ - switch (arg->op.type) { - case FILTER_OP_AND: - return test_filter(event, arg->op.left, record, err) && - test_filter(event, arg->op.right, record, err); - - case FILTER_OP_OR: - return test_filter(event, arg->op.left, record, err) || - test_filter(event, arg->op.right, record, err); - - case FILTER_OP_NOT: - return !test_filter(event, arg->op.right, record, err); - - default: - if (!*err) - *err = PEVENT_ERRNO__INVALID_OP_TYPE; - return 0; - } -} - -static int test_filter(struct event_format *event, struct filter_arg *arg, - struct pevent_record *record, enum pevent_errno *err) -{ - if (*err) { - /* - * There was an error, no need to process anymore. - */ - return 0; - } - - switch (arg->type) { - case FILTER_ARG_BOOLEAN: - /* easy case */ - return arg->boolean.value; - - case FILTER_ARG_OP: - return test_op(event, arg, record, err); - - case FILTER_ARG_NUM: - return test_num(event, arg, record, err); - - case FILTER_ARG_STR: - return test_str(event, arg, record, err); - - case FILTER_ARG_EXP: - case FILTER_ARG_VALUE: - case FILTER_ARG_FIELD: - /* - * Expressions, fields and values evaluate - * to true if they return non zero - */ - return !!get_arg_value(event, arg, record, err); - - default: - if (!*err) - *err = PEVENT_ERRNO__INVALID_ARG_TYPE; - return 0; - } -} - -/** - * pevent_event_filtered - return true if event has filter - * @filter: filter struct with filter information - * @event_id: event id to test if filter exists - * - * Returns 1 if filter found for @event_id - * otherwise 0; - */ -int pevent_event_filtered(struct event_filter *filter, int event_id) -{ - struct filter_type *filter_type; - - if (!filter->filters) - return 0; - - filter_type = find_filter_type(filter, event_id); - - return filter_type ? 1 : 0; -} - -/** - * pevent_filter_match - test if a record matches a filter - * @filter: filter struct with filter information - * @record: the record to test against the filter - * - * Returns: match result or error code (prefixed with PEVENT_ERRNO__) - * FILTER_MATCH - filter found for event and @record matches - * FILTER_MISS - filter found for event and @record does not match - * FILTER_NOT_FOUND - no filter found for @record's event - * NO_FILTER - if no filters exist - * otherwise - error occurred during test - */ -enum pevent_errno pevent_filter_match(struct event_filter *filter, - struct pevent_record *record) -{ - struct pevent *pevent = filter->pevent; - struct filter_type *filter_type; - int event_id; - int ret; - enum pevent_errno err = 0; - - filter_init_error_buf(filter); - - if (!filter->filters) - return PEVENT_ERRNO__NO_FILTER; - - event_id = pevent_data_type(pevent, record); - - filter_type = find_filter_type(filter, event_id); - if (!filter_type) - return PEVENT_ERRNO__FILTER_NOT_FOUND; - - ret = test_filter(filter_type->event, filter_type->filter, record, &err); - if (err) - return err; - - return ret ? PEVENT_ERRNO__FILTER_MATCH : PEVENT_ERRNO__FILTER_MISS; -} - -static char *op_to_str(struct event_filter *filter, struct filter_arg *arg) -{ - char *str = NULL; - char *left = NULL; - char *right = NULL; - char *op = NULL; - int left_val = -1; - int right_val = -1; - int val; - - switch (arg->op.type) { - case FILTER_OP_AND: - op = "&&"; - /* fall through */ - case FILTER_OP_OR: - if (!op) - op = "||"; - - left = arg_to_str(filter, arg->op.left); - right = arg_to_str(filter, arg->op.right); - if (!left || !right) - break; - - /* Try to consolidate boolean values */ - if (strcmp(left, "TRUE") == 0) - left_val = 1; - else if (strcmp(left, "FALSE") == 0) - left_val = 0; - - if (strcmp(right, "TRUE") == 0) - right_val = 1; - else if (strcmp(right, "FALSE") == 0) - right_val = 0; - - if (left_val >= 0) { - if ((arg->op.type == FILTER_OP_AND && !left_val) || - (arg->op.type == FILTER_OP_OR && left_val)) { - /* Just return left value */ - str = left; - left = NULL; - break; - } - if (right_val >= 0) { - /* just evaluate this. */ - val = 0; - switch (arg->op.type) { - case FILTER_OP_AND: - val = left_val && right_val; - break; - case FILTER_OP_OR: - val = left_val || right_val; - break; - default: - break; - } - asprintf(&str, val ? "TRUE" : "FALSE"); - break; - } - } - if (right_val >= 0) { - if ((arg->op.type == FILTER_OP_AND && !right_val) || - (arg->op.type == FILTER_OP_OR && right_val)) { - /* Just return right value */ - str = right; - right = NULL; - break; - } - /* The right value is meaningless */ - str = left; - left = NULL; - break; - } - - asprintf(&str, "(%s) %s (%s)", left, op, right); - break; - - case FILTER_OP_NOT: - op = "!"; - right = arg_to_str(filter, arg->op.right); - if (!right) - break; - - /* See if we can consolidate */ - if (strcmp(right, "TRUE") == 0) - right_val = 1; - else if (strcmp(right, "FALSE") == 0) - right_val = 0; - if (right_val >= 0) { - /* just return the opposite */ - asprintf(&str, right_val ? "FALSE" : "TRUE"); - break; - } - asprintf(&str, "%s(%s)", op, right); - break; - - default: - /* ?? */ - break; - } - free(left); - free(right); - return str; -} - -static char *val_to_str(struct event_filter *filter, struct filter_arg *arg) -{ - char *str = NULL; - - asprintf(&str, "%lld", arg->value.val); - - return str; -} - -static char *field_to_str(struct event_filter *filter, struct filter_arg *arg) -{ - return strdup(arg->field.field->name); -} - -static char *exp_to_str(struct event_filter *filter, struct filter_arg *arg) -{ - char *lstr; - char *rstr; - char *op; - char *str = NULL; - - lstr = arg_to_str(filter, arg->exp.left); - rstr = arg_to_str(filter, arg->exp.right); - if (!lstr || !rstr) - goto out; - - switch (arg->exp.type) { - case FILTER_EXP_ADD: - op = "+"; - break; - case FILTER_EXP_SUB: - op = "-"; - break; - case FILTER_EXP_MUL: - op = "*"; - break; - case FILTER_EXP_DIV: - op = "/"; - break; - case FILTER_EXP_MOD: - op = "%"; - break; - case FILTER_EXP_RSHIFT: - op = ">>"; - break; - case FILTER_EXP_LSHIFT: - op = "<<"; - break; - case FILTER_EXP_AND: - op = "&"; - break; - case FILTER_EXP_OR: - op = "|"; - break; - case FILTER_EXP_XOR: - op = "^"; - break; - default: - op = "[ERROR IN EXPRESSION TYPE]"; - break; - } - - asprintf(&str, "%s %s %s", lstr, op, rstr); -out: - free(lstr); - free(rstr); - - return str; -} - -static char *num_to_str(struct event_filter *filter, struct filter_arg *arg) -{ - char *lstr; - char *rstr; - char *str = NULL; - char *op = NULL; - - lstr = arg_to_str(filter, arg->num.left); - rstr = arg_to_str(filter, arg->num.right); - if (!lstr || !rstr) - goto out; - - switch (arg->num.type) { - case FILTER_CMP_EQ: - op = "=="; - /* fall through */ - case FILTER_CMP_NE: - if (!op) - op = "!="; - /* fall through */ - case FILTER_CMP_GT: - if (!op) - op = ">"; - /* fall through */ - case FILTER_CMP_LT: - if (!op) - op = "<"; - /* fall through */ - case FILTER_CMP_GE: - if (!op) - op = ">="; - /* fall through */ - case FILTER_CMP_LE: - if (!op) - op = "<="; - - asprintf(&str, "%s %s %s", lstr, op, rstr); - break; - - default: - /* ?? */ - break; - } - -out: - free(lstr); - free(rstr); - return str; -} - -static char *str_to_str(struct event_filter *filter, struct filter_arg *arg) -{ - char *str = NULL; - char *op = NULL; - - switch (arg->str.type) { - case FILTER_CMP_MATCH: - op = "=="; - /* fall through */ - case FILTER_CMP_NOT_MATCH: - if (!op) - op = "!="; - /* fall through */ - case FILTER_CMP_REGEX: - if (!op) - op = "=~"; - /* fall through */ - case FILTER_CMP_NOT_REGEX: - if (!op) - op = "!~"; - - asprintf(&str, "%s %s \"%s\"", - arg->str.field->name, op, arg->str.val); - break; - - default: - /* ?? */ - break; - } - return str; -} - -static char *arg_to_str(struct event_filter *filter, struct filter_arg *arg) -{ - char *str = NULL; - - switch (arg->type) { - case FILTER_ARG_BOOLEAN: - asprintf(&str, arg->boolean.value ? "TRUE" : "FALSE"); - return str; - - case FILTER_ARG_OP: - return op_to_str(filter, arg); - - case FILTER_ARG_NUM: - return num_to_str(filter, arg); - - case FILTER_ARG_STR: - return str_to_str(filter, arg); - - case FILTER_ARG_VALUE: - return val_to_str(filter, arg); - - case FILTER_ARG_FIELD: - return field_to_str(filter, arg); - - case FILTER_ARG_EXP: - return exp_to_str(filter, arg); - - default: - /* ?? */ - return NULL; - } - -} - -/** - * pevent_filter_make_string - return a string showing the filter - * @filter: filter struct with filter information - * @event_id: the event id to return the filter string with - * - * Returns a string that displays the filter contents. - * This string must be freed with free(str). - * NULL is returned if no filter is found or allocation failed. - */ -char * -pevent_filter_make_string(struct event_filter *filter, int event_id) -{ - struct filter_type *filter_type; - - if (!filter->filters) - return NULL; - - filter_type = find_filter_type(filter, event_id); - - if (!filter_type) - return NULL; - - return arg_to_str(filter, filter_type->filter); -} - -/** - * pevent_filter_compare - compare two filters and return if they are the same - * @filter1: Filter to compare with @filter2 - * @filter2: Filter to compare with @filter1 - * - * Returns: - * 1 if the two filters hold the same content. - * 0 if they do not. - */ -int pevent_filter_compare(struct event_filter *filter1, struct event_filter *filter2) -{ - struct filter_type *filter_type1; - struct filter_type *filter_type2; - char *str1, *str2; - int result; - int i; - - /* Do the easy checks first */ - if (filter1->filters != filter2->filters) - return 0; - if (!filter1->filters && !filter2->filters) - return 1; - - /* - * Now take a look at each of the events to see if they have the same - * filters to them. - */ - for (i = 0; i < filter1->filters; i++) { - filter_type1 = &filter1->event_filters[i]; - filter_type2 = find_filter_type(filter2, filter_type1->event_id); - if (!filter_type2) - break; - if (filter_type1->filter->type != filter_type2->filter->type) - break; - switch (filter_type1->filter->type) { - case FILTER_TRIVIAL_FALSE: - case FILTER_TRIVIAL_TRUE: - /* trivial types just need the type compared */ - continue; - default: - break; - } - /* The best way to compare complex filters is with strings */ - str1 = arg_to_str(filter1, filter_type1->filter); - str2 = arg_to_str(filter2, filter_type2->filter); - if (str1 && str2) - result = strcmp(str1, str2) != 0; - else - /* bail out if allocation fails */ - result = 1; - - free(str1); - free(str2); - if (result) - break; - } - - if (i < filter1->filters) - return 0; - return 1; -} - diff --git a/tools/lib/traceevent/parse-utils.c b/tools/lib/traceevent/parse-utils.c deleted file mode 100644 index eda07fa31dca..000000000000 --- a/tools/lib/traceevent/parse-utils.c +++ /dev/null @@ -1,85 +0,0 @@ -/* - * Copyright (C) 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; - * version 2.1 of the License (not later!) - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this program; if not, see <http://www.gnu.org/licenses> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <stdarg.h> -#include <errno.h> - -#define __weak __attribute__((weak)) - -void __vwarning(const char *fmt, va_list ap) -{ - if (errno) - perror("trace-cmd"); - errno = 0; - - fprintf(stderr, " "); - vfprintf(stderr, fmt, ap); - - fprintf(stderr, "\n"); -} - -void __warning(const char *fmt, ...) -{ - va_list ap; - - va_start(ap, fmt); - __vwarning(fmt, ap); - va_end(ap); -} - -void __weak warning(const char *fmt, ...) -{ - va_list ap; - - va_start(ap, fmt); - __vwarning(fmt, ap); - va_end(ap); -} - -void __vpr_stat(const char *fmt, va_list ap) -{ - vprintf(fmt, ap); - printf("\n"); -} - -void __pr_stat(const char *fmt, ...) -{ - va_list ap; - - va_start(ap, fmt); - __vpr_stat(fmt, ap); - va_end(ap); -} - -void __weak vpr_stat(const char *fmt, va_list ap) -{ - __vpr_stat(fmt, ap); -} - -void __weak pr_stat(const char *fmt, ...) -{ - va_list ap; - - va_start(ap, fmt); - __vpr_stat(fmt, ap); - va_end(ap); -} diff --git a/tools/lib/traceevent/plugin_cfg80211.c b/tools/lib/traceevent/plugin_cfg80211.c deleted file mode 100644 index ec57d0c1fbc2..000000000000 --- a/tools/lib/traceevent/plugin_cfg80211.c +++ /dev/null @@ -1,42 +0,0 @@ -#include <stdio.h> -#include <string.h> -#include <inttypes.h> -#include <endian.h> -#include "event-parse.h" - -/* - * From glibc endian.h, for older systems where it is not present, e.g.: RHEL5, - * Fedora6. - */ -#ifndef le16toh -# if __BYTE_ORDER == __LITTLE_ENDIAN -# define le16toh(x) (x) -# else -# define le16toh(x) __bswap_16 (x) -# endif -#endif - - -static unsigned long long -process___le16_to_cpup(struct trace_seq *s, unsigned long long *args) -{ - uint16_t *val = (uint16_t *) (unsigned long) args[0]; - return val ? (long long) le16toh(*val) : 0; -} - -int PEVENT_PLUGIN_LOADER(struct pevent *pevent) -{ - pevent_register_print_function(pevent, - process___le16_to_cpup, - PEVENT_FUNC_ARG_INT, - "__le16_to_cpup", - PEVENT_FUNC_ARG_PTR, - PEVENT_FUNC_ARG_VOID); - return 0; -} - -void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) -{ - pevent_unregister_print_function(pevent, process___le16_to_cpup, - "__le16_to_cpup"); -} diff --git a/tools/lib/traceevent/plugin_function.c b/tools/lib/traceevent/plugin_function.c deleted file mode 100644 index 42dbf73758f3..000000000000 --- a/tools/lib/traceevent/plugin_function.c +++ /dev/null @@ -1,194 +0,0 @@ -/* - * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; - * version 2.1 of the License (not later!) - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this program; if not, see <http://www.gnu.org/licenses> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "event-parse.h" -#include "event-utils.h" - -static struct func_stack { - int size; - char **stack; -} *fstack; - -static int cpus = -1; - -#define STK_BLK 10 - -struct pevent_plugin_option plugin_options[] = -{ - { - .name = "parent", - .plugin_alias = "ftrace", - .description = - "Print parent of functions for function events", - }, - { - .name = "indent", - .plugin_alias = "ftrace", - .description = - "Try to show function call indents, based on parents", - .set = 1, - }, - { - .name = NULL, - } -}; - -static struct pevent_plugin_option *ftrace_parent = &plugin_options[0]; -static struct pevent_plugin_option *ftrace_indent = &plugin_options[1]; - -static void add_child(struct func_stack *stack, const char *child, int pos) -{ - int i; - - if (!child) - return; - - if (pos < stack->size) - free(stack->stack[pos]); - else { - char **ptr; - - ptr = realloc(stack->stack, sizeof(char *) * - (stack->size + STK_BLK)); - if (!ptr) { - warning("could not allocate plugin memory\n"); - return; - } - - stack->stack = ptr; - - for (i = stack->size; i < stack->size + STK_BLK; i++) - stack->stack[i] = NULL; - stack->size += STK_BLK; - } - - stack->stack[pos] = strdup(child); -} - -static int add_and_get_index(const char *parent, const char *child, int cpu) -{ - int i; - - if (cpu < 0) - return 0; - - if (cpu > cpus) { - struct func_stack *ptr; - - ptr = realloc(fstack, sizeof(*fstack) * (cpu + 1)); - if (!ptr) { - warning("could not allocate plugin memory\n"); - return 0; - } - - fstack = ptr; - - /* Account for holes in the cpu count */ - for (i = cpus + 1; i <= cpu; i++) - memset(&fstack[i], 0, sizeof(fstack[i])); - cpus = cpu; - } - - for (i = 0; i < fstack[cpu].size && fstack[cpu].stack[i]; i++) { - if (strcmp(parent, fstack[cpu].stack[i]) == 0) { - add_child(&fstack[cpu], child, i+1); - return i; - } - } - - /* Not found */ - add_child(&fstack[cpu], parent, 0); - add_child(&fstack[cpu], child, 1); - return 0; -} - -static int function_handler(struct trace_seq *s, struct pevent_record *record, - struct event_format *event, void *context) -{ - struct pevent *pevent = event->pevent; - unsigned long long function; - unsigned long long pfunction; - const char *func; - const char *parent; - int index = 0; - - if (pevent_get_field_val(s, event, "ip", record, &function, 1)) - return trace_seq_putc(s, '!'); - - func = pevent_find_function(pevent, function); - - if (pevent_get_field_val(s, event, "parent_ip", record, &pfunction, 1)) - return trace_seq_putc(s, '!'); - - parent = pevent_find_function(pevent, pfunction); - - if (parent && ftrace_indent->set) - index = add_and_get_index(parent, func, record->cpu); - - trace_seq_printf(s, "%*s", index*3, ""); - - if (func) - trace_seq_printf(s, "%s", func); - else - trace_seq_printf(s, "0x%llx", function); - - if (ftrace_parent->set) { - trace_seq_printf(s, " <-- "); - if (parent) - trace_seq_printf(s, "%s", parent); - else - trace_seq_printf(s, "0x%llx", pfunction); - } - - return 0; -} - -int PEVENT_PLUGIN_LOADER(struct pevent *pevent) -{ - pevent_register_event_handler(pevent, -1, "ftrace", "function", - function_handler, NULL); - - traceevent_plugin_add_options("ftrace", plugin_options); - - return 0; -} - -void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) -{ - int i, x; - - pevent_unregister_event_handler(pevent, -1, "ftrace", "function", - function_handler, NULL); - - for (i = 0; i <= cpus; i++) { - for (x = 0; x < fstack[i].size && fstack[i].stack[x]; x++) - free(fstack[i].stack[x]); - free(fstack[i].stack); - } - - traceevent_plugin_remove_options(plugin_options); - - free(fstack); - fstack = NULL; - cpus = -1; -} diff --git a/tools/lib/traceevent/plugin_hrtimer.c b/tools/lib/traceevent/plugin_hrtimer.c deleted file mode 100644 index 12bf14cc1152..000000000000 --- a/tools/lib/traceevent/plugin_hrtimer.c +++ /dev/null @@ -1,88 +0,0 @@ -/* - * Copyright (C) 2009 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> - * Copyright (C) 2009 Johannes Berg <johannes@sipsolutions.net> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; - * version 2.1 of the License (not later!) - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this program; if not, see <http://www.gnu.org/licenses> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "event-parse.h" - -static int timer_expire_handler(struct trace_seq *s, - struct pevent_record *record, - struct event_format *event, void *context) -{ - trace_seq_printf(s, "hrtimer="); - - if (pevent_print_num_field(s, "0x%llx", event, "timer", - record, 0) == -1) - pevent_print_num_field(s, "0x%llx", event, "hrtimer", - record, 1); - - trace_seq_printf(s, " now="); - - pevent_print_num_field(s, "%llu", event, "now", record, 1); - - pevent_print_func_field(s, " function=%s", event, "function", - record, 0); - return 0; -} - -static int timer_start_handler(struct trace_seq *s, - struct pevent_record *record, - struct event_format *event, void *context) -{ - trace_seq_printf(s, "hrtimer="); - - if (pevent_print_num_field(s, "0x%llx", event, "timer", - record, 0) == -1) - pevent_print_num_field(s, "0x%llx", event, "hrtimer", - record, 1); - - pevent_print_func_field(s, " function=%s", event, "function", - record, 0); - - trace_seq_printf(s, " expires="); - pevent_print_num_field(s, "%llu", event, "expires", record, 1); - - trace_seq_printf(s, " softexpires="); - pevent_print_num_field(s, "%llu", event, "softexpires", record, 1); - return 0; -} - -int PEVENT_PLUGIN_LOADER(struct pevent *pevent) -{ - pevent_register_event_handler(pevent, -1, - "timer", "hrtimer_expire_entry", - timer_expire_handler, NULL); - - pevent_register_event_handler(pevent, -1, "timer", "hrtimer_start", - timer_start_handler, NULL); - return 0; -} - -void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) -{ - pevent_unregister_event_handler(pevent, -1, - "timer", "hrtimer_expire_entry", - timer_expire_handler, NULL); - - pevent_unregister_event_handler(pevent, -1, "timer", "hrtimer_start", - timer_start_handler, NULL); -} diff --git a/tools/lib/traceevent/plugin_jbd2.c b/tools/lib/traceevent/plugin_jbd2.c deleted file mode 100644 index 5c23d5bd27ce..000000000000 --- a/tools/lib/traceevent/plugin_jbd2.c +++ /dev/null @@ -1,75 +0,0 @@ -/* - * Copyright (C) 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; - * version 2.1 of the License (not later!) - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this program; if not, see <http://www.gnu.org/licenses> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "event-parse.h" - -#define MINORBITS 20 -#define MINORMASK ((1U << MINORBITS) - 1) - -#define MAJOR(dev) ((unsigned int) ((dev) >> MINORBITS)) -#define MINOR(dev) ((unsigned int) ((dev) & MINORMASK)) - -static unsigned long long -process_jbd2_dev_to_name(struct trace_seq *s, unsigned long long *args) -{ - unsigned int dev = args[0]; - - trace_seq_printf(s, "%d:%d", MAJOR(dev), MINOR(dev)); - return 0; -} - -static unsigned long long -process_jiffies_to_msecs(struct trace_seq *s, unsigned long long *args) -{ - unsigned long long jiffies = args[0]; - - trace_seq_printf(s, "%lld", jiffies); - return jiffies; -} - -int PEVENT_PLUGIN_LOADER(struct pevent *pevent) -{ - pevent_register_print_function(pevent, - process_jbd2_dev_to_name, - PEVENT_FUNC_ARG_STRING, - "jbd2_dev_to_name", - PEVENT_FUNC_ARG_INT, - PEVENT_FUNC_ARG_VOID); - - pevent_register_print_function(pevent, - process_jiffies_to_msecs, - PEVENT_FUNC_ARG_LONG, - "jiffies_to_msecs", - PEVENT_FUNC_ARG_LONG, - PEVENT_FUNC_ARG_VOID); - return 0; -} - -void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) -{ - pevent_unregister_print_function(pevent, process_jbd2_dev_to_name, - "jbd2_dev_to_name"); - - pevent_unregister_print_function(pevent, process_jiffies_to_msecs, - "jiffies_to_msecs"); -} diff --git a/tools/lib/traceevent/plugin_kmem.c b/tools/lib/traceevent/plugin_kmem.c deleted file mode 100644 index 70650ff48d78..000000000000 --- a/tools/lib/traceevent/plugin_kmem.c +++ /dev/null @@ -1,94 +0,0 @@ -/* - * Copyright (C) 2009 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; - * version 2.1 of the License (not later!) - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this program; if not, see <http://www.gnu.org/licenses> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "event-parse.h" - -static int call_site_handler(struct trace_seq *s, struct pevent_record *record, - struct event_format *event, void *context) -{ - struct format_field *field; - unsigned long long val, addr; - void *data = record->data; - const char *func; - - field = pevent_find_field(event, "call_site"); - if (!field) - return 1; - - if (pevent_read_number_field(field, data, &val)) - return 1; - - func = pevent_find_function(event->pevent, val); - if (!func) - return 1; - - addr = pevent_find_function_address(event->pevent, val); - - trace_seq_printf(s, "(%s+0x%x) ", func, (int)(val - addr)); - return 1; -} - -int PEVENT_PLUGIN_LOADER(struct pevent *pevent) -{ - pevent_register_event_handler(pevent, -1, "kmem", "kfree", - call_site_handler, NULL); - - pevent_register_event_handler(pevent, -1, "kmem", "kmalloc", - call_site_handler, NULL); - - pevent_register_event_handler(pevent, -1, "kmem", "kmalloc_node", - call_site_handler, NULL); - - pevent_register_event_handler(pevent, -1, "kmem", "kmem_cache_alloc", - call_site_handler, NULL); - - pevent_register_event_handler(pevent, -1, "kmem", - "kmem_cache_alloc_node", - call_site_handler, NULL); - - pevent_register_event_handler(pevent, -1, "kmem", "kmem_cache_free", - call_site_handler, NULL); - return 0; -} - -void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) -{ - pevent_unregister_event_handler(pevent, -1, "kmem", "kfree", - call_site_handler, NULL); - - pevent_unregister_event_handler(pevent, -1, "kmem", "kmalloc", - call_site_handler, NULL); - - pevent_unregister_event_handler(pevent, -1, "kmem", "kmalloc_node", - call_site_handler, NULL); - - pevent_unregister_event_handler(pevent, -1, "kmem", "kmem_cache_alloc", - call_site_handler, NULL); - - pevent_unregister_event_handler(pevent, -1, "kmem", - "kmem_cache_alloc_node", - call_site_handler, NULL); - - pevent_unregister_event_handler(pevent, -1, "kmem", "kmem_cache_free", - call_site_handler, NULL); -} diff --git a/tools/lib/traceevent/plugin_kvm.c b/tools/lib/traceevent/plugin_kvm.c deleted file mode 100644 index 18536f756577..000000000000 --- a/tools/lib/traceevent/plugin_kvm.c +++ /dev/null @@ -1,522 +0,0 @@ -/* - * Copyright (C) 2009 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; - * version 2.1 of the License (not later!) - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this program; if not, see <http://www.gnu.org/licenses> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <stdint.h> - -#include "event-parse.h" - -#ifdef HAVE_UDIS86 - -#include <udis86.h> - -static ud_t ud; - -static void init_disassembler(void) -{ - ud_init(&ud); - ud_set_syntax(&ud, UD_SYN_ATT); -} - -static const char *disassemble(unsigned char *insn, int len, uint64_t rip, - int cr0_pe, int eflags_vm, - int cs_d, int cs_l) -{ - int mode; - - if (!cr0_pe) - mode = 16; - else if (eflags_vm) - mode = 16; - else if (cs_l) - mode = 64; - else if (cs_d) - mode = 32; - else - mode = 16; - - ud_set_pc(&ud, rip); - ud_set_mode(&ud, mode); - ud_set_input_buffer(&ud, insn, len); - ud_disassemble(&ud); - return ud_insn_asm(&ud); -} - -#else - -static void init_disassembler(void) -{ -} - -static const char *disassemble(unsigned char *insn, int len, uint64_t rip, - int cr0_pe, int eflags_vm, - int cs_d, int cs_l) -{ - static char out[15*3+1]; - int i; - - for (i = 0; i < len; ++i) - sprintf(out + i * 3, "%02x ", insn[i]); - out[len*3-1] = '\0'; - return out; -} - -#endif - - -#define VMX_EXIT_REASONS \ - _ER(EXCEPTION_NMI, 0) \ - _ER(EXTERNAL_INTERRUPT, 1) \ - _ER(TRIPLE_FAULT, 2) \ - _ER(PENDING_INTERRUPT, 7) \ - _ER(NMI_WINDOW, 8) \ - _ER(TASK_SWITCH, 9) \ - _ER(CPUID, 10) \ - _ER(HLT, 12) \ - _ER(INVD, 13) \ - _ER(INVLPG, 14) \ - _ER(RDPMC, 15) \ - _ER(RDTSC, 16) \ - _ER(VMCALL, 18) \ - _ER(VMCLEAR, 19) \ - _ER(VMLAUNCH, 20) \ - _ER(VMPTRLD, 21) \ - _ER(VMPTRST, 22) \ - _ER(VMREAD, 23) \ - _ER(VMRESUME, 24) \ - _ER(VMWRITE, 25) \ - _ER(VMOFF, 26) \ - _ER(VMON, 27) \ - _ER(CR_ACCESS, 28) \ - _ER(DR_ACCESS, 29) \ - _ER(IO_INSTRUCTION, 30) \ - _ER(MSR_READ, 31) \ - _ER(MSR_WRITE, 32) \ - _ER(MWAIT_INSTRUCTION, 36) \ - _ER(MONITOR_INSTRUCTION, 39) \ - _ER(PAUSE_INSTRUCTION, 40) \ - _ER(MCE_DURING_VMENTRY, 41) \ - _ER(TPR_BELOW_THRESHOLD, 43) \ - _ER(APIC_ACCESS, 44) \ - _ER(EOI_INDUCED, 45) \ - _ER(EPT_VIOLATION, 48) \ - _ER(EPT_MISCONFIG, 49) \ - _ER(INVEPT, 50) \ - _ER(PREEMPTION_TIMER, 52) \ - _ER(WBINVD, 54) \ - _ER(XSETBV, 55) \ - _ER(APIC_WRITE, 56) \ - _ER(INVPCID, 58) \ - _ER(PML_FULL, 62) \ - _ER(XSAVES, 63) \ - _ER(XRSTORS, 64) - -#define SVM_EXIT_REASONS \ - _ER(EXIT_READ_CR0, 0x000) \ - _ER(EXIT_READ_CR3, 0x003) \ - _ER(EXIT_READ_CR4, 0x004) \ - _ER(EXIT_READ_CR8, 0x008) \ - _ER(EXIT_WRITE_CR0, 0x010) \ - _ER(EXIT_WRITE_CR3, 0x013) \ - _ER(EXIT_WRITE_CR4, 0x014) \ - _ER(EXIT_WRITE_CR8, 0x018) \ - _ER(EXIT_READ_DR0, 0x020) \ - _ER(EXIT_READ_DR1, 0x021) \ - _ER(EXIT_READ_DR2, 0x022) \ - _ER(EXIT_READ_DR3, 0x023) \ - _ER(EXIT_READ_DR4, 0x024) \ - _ER(EXIT_READ_DR5, 0x025) \ - _ER(EXIT_READ_DR6, 0x026) \ - _ER(EXIT_READ_DR7, 0x027) \ - _ER(EXIT_WRITE_DR0, 0x030) \ - _ER(EXIT_WRITE_DR1, 0x031) \ - _ER(EXIT_WRITE_DR2, 0x032) \ - _ER(EXIT_WRITE_DR3, 0x033) \ - _ER(EXIT_WRITE_DR4, 0x034) \ - _ER(EXIT_WRITE_DR5, 0x035) \ - _ER(EXIT_WRITE_DR6, 0x036) \ - _ER(EXIT_WRITE_DR7, 0x037) \ - _ER(EXIT_EXCP_BASE, 0x040) \ - _ER(EXIT_INTR, 0x060) \ - _ER(EXIT_NMI, 0x061) \ - _ER(EXIT_SMI, 0x062) \ - _ER(EXIT_INIT, 0x063) \ - _ER(EXIT_VINTR, 0x064) \ - _ER(EXIT_CR0_SEL_WRITE, 0x065) \ - _ER(EXIT_IDTR_READ, 0x066) \ - _ER(EXIT_GDTR_READ, 0x067) \ - _ER(EXIT_LDTR_READ, 0x068) \ - _ER(EXIT_TR_READ, 0x069) \ - _ER(EXIT_IDTR_WRITE, 0x06a) \ - _ER(EXIT_GDTR_WRITE, 0x06b) \ - _ER(EXIT_LDTR_WRITE, 0x06c) \ - _ER(EXIT_TR_WRITE, 0x06d) \ - _ER(EXIT_RDTSC, 0x06e) \ - _ER(EXIT_RDPMC, 0x06f) \ - _ER(EXIT_PUSHF, 0x070) \ - _ER(EXIT_POPF, 0x071) \ - _ER(EXIT_CPUID, 0x072) \ - _ER(EXIT_RSM, 0x073) \ - _ER(EXIT_IRET, 0x074) \ - _ER(EXIT_SWINT, 0x075) \ - _ER(EXIT_INVD, 0x076) \ - _ER(EXIT_PAUSE, 0x077) \ - _ER(EXIT_HLT, 0x078) \ - _ER(EXIT_INVLPG, 0x079) \ - _ER(EXIT_INVLPGA, 0x07a) \ - _ER(EXIT_IOIO, 0x07b) \ - _ER(EXIT_MSR, 0x07c) \ - _ER(EXIT_TASK_SWITCH, 0x07d) \ - _ER(EXIT_FERR_FREEZE, 0x07e) \ - _ER(EXIT_SHUTDOWN, 0x07f) \ - _ER(EXIT_VMRUN, 0x080) \ - _ER(EXIT_VMMCALL, 0x081) \ - _ER(EXIT_VMLOAD, 0x082) \ - _ER(EXIT_VMSAVE, 0x083) \ - _ER(EXIT_STGI, 0x084) \ - _ER(EXIT_CLGI, 0x085) \ - _ER(EXIT_SKINIT, 0x086) \ - _ER(EXIT_RDTSCP, 0x087) \ - _ER(EXIT_ICEBP, 0x088) \ - _ER(EXIT_WBINVD, 0x089) \ - _ER(EXIT_MONITOR, 0x08a) \ - _ER(EXIT_MWAIT, 0x08b) \ - _ER(EXIT_MWAIT_COND, 0x08c) \ - _ER(EXIT_NPF, 0x400) \ - _ER(EXIT_ERR, -1) - -#define _ER(reason, val) { #reason, val }, -struct str_values { - const char *str; - int val; -}; - -static struct str_values vmx_exit_reasons[] = { - VMX_EXIT_REASONS - { NULL, -1} -}; - -static struct str_values svm_exit_reasons[] = { - SVM_EXIT_REASONS - { NULL, -1} -}; - -static struct isa_exit_reasons { - unsigned isa; - struct str_values *strings; -} isa_exit_reasons[] = { - { .isa = 1, .strings = vmx_exit_reasons }, - { .isa = 2, .strings = svm_exit_reasons }, - { } -}; - -static const char *find_exit_reason(unsigned isa, int val) -{ - struct str_values *strings = NULL; - int i; - - for (i = 0; isa_exit_reasons[i].strings; ++i) - if (isa_exit_reasons[i].isa == isa) { - strings = isa_exit_reasons[i].strings; - break; - } - if (!strings) - return "UNKNOWN-ISA"; - for (i = 0; strings[i].val >= 0; i++) - if (strings[i].val == val) - break; - - return strings[i].str; -} - -static int print_exit_reason(struct trace_seq *s, struct pevent_record *record, - struct event_format *event, const char *field) -{ - unsigned long long isa; - unsigned long long val; - const char *reason; - - if (pevent_get_field_val(s, event, field, record, &val, 1) < 0) - return -1; - - if (pevent_get_field_val(s, event, "isa", record, &isa, 0) < 0) - isa = 1; - - reason = find_exit_reason(isa, val); - if (reason) - trace_seq_printf(s, "reason %s", reason); - else - trace_seq_printf(s, "reason UNKNOWN (%llu)", val); - return 0; -} - -static int kvm_exit_handler(struct trace_seq *s, struct pevent_record *record, - struct event_format *event, void *context) -{ - unsigned long long info1 = 0, info2 = 0; - - if (print_exit_reason(s, record, event, "exit_reason") < 0) - return -1; - - pevent_print_num_field(s, " rip 0x%lx", event, "guest_rip", record, 1); - - if (pevent_get_field_val(s, event, "info1", record, &info1, 0) >= 0 - && pevent_get_field_val(s, event, "info2", record, &info2, 0) >= 0) - trace_seq_printf(s, " info %llx %llx", info1, info2); - - return 0; -} - -#define KVM_EMUL_INSN_F_CR0_PE (1 << 0) -#define KVM_EMUL_INSN_F_EFL_VM (1 << 1) -#define KVM_EMUL_INSN_F_CS_D (1 << 2) -#define KVM_EMUL_INSN_F_CS_L (1 << 3) - -static int kvm_emulate_insn_handler(struct trace_seq *s, - struct pevent_record *record, - struct event_format *event, void *context) -{ - unsigned long long rip, csbase, len, flags, failed; - int llen; - uint8_t *insn; - const char *disasm; - - if (pevent_get_field_val(s, event, "rip", record, &rip, 1) < 0) - return -1; - - if (pevent_get_field_val(s, event, "csbase", record, &csbase, 1) < 0) - return -1; - - if (pevent_get_field_val(s, event, "len", record, &len, 1) < 0) - return -1; - - if (pevent_get_field_val(s, event, "flags", record, &flags, 1) < 0) - return -1; - - if (pevent_get_field_val(s, event, "failed", record, &failed, 1) < 0) - return -1; - - insn = pevent_get_field_raw(s, event, "insn", record, &llen, 1); - if (!insn) - return -1; - - disasm = disassemble(insn, len, rip, - flags & KVM_EMUL_INSN_F_CR0_PE, - flags & KVM_EMUL_INSN_F_EFL_VM, - flags & KVM_EMUL_INSN_F_CS_D, - flags & KVM_EMUL_INSN_F_CS_L); - - trace_seq_printf(s, "%llx:%llx: %s%s", csbase, rip, disasm, - failed ? " FAIL" : ""); - return 0; -} - - -static int kvm_nested_vmexit_inject_handler(struct trace_seq *s, struct pevent_record *record, - struct event_format *event, void *context) -{ - if (print_exit_reason(s, record, event, "exit_code") < 0) - return -1; - - pevent_print_num_field(s, " info1 %llx", event, "exit_info1", record, 1); - pevent_print_num_field(s, " info2 %llx", event, "exit_info2", record, 1); - pevent_print_num_field(s, " int_info %llx", event, "exit_int_info", record, 1); - pevent_print_num_field(s, " int_info_err %llx", event, "exit_int_info_err", record, 1); - - return 0; -} - -static int kvm_nested_vmexit_handler(struct trace_seq *s, struct pevent_record *record, - struct event_format *event, void *context) -{ - pevent_print_num_field(s, "rip %llx ", event, "rip", record, 1); - - return kvm_nested_vmexit_inject_handler(s, record, event, context); -} - -union kvm_mmu_page_role { - unsigned word; - struct { - unsigned level:4; - unsigned cr4_pae:1; - unsigned quadrant:2; - unsigned direct:1; - unsigned access:3; - unsigned invalid:1; - unsigned nxe:1; - unsigned cr0_wp:1; - unsigned smep_and_not_wp:1; - unsigned smap_and_not_wp:1; - unsigned pad_for_nice_hex_output:8; - unsigned smm:8; - }; -}; - -static int kvm_mmu_print_role(struct trace_seq *s, struct pevent_record *record, - struct event_format *event, void *context) -{ - unsigned long long val; - static const char *access_str[] = { - "---", "--x", "w--", "w-x", "-u-", "-ux", "wu-", "wux" - }; - union kvm_mmu_page_role role; - - if (pevent_get_field_val(s, event, "role", record, &val, 1) < 0) - return -1; - - role.word = (int)val; - - /* - * We can only use the structure if file is of the same - * endianess. - */ - if (pevent_is_file_bigendian(event->pevent) == - pevent_is_host_bigendian(event->pevent)) { - - trace_seq_printf(s, "%u q%u%s %s%s %spae %snxe %swp%s%s%s", - role.level, - role.quadrant, - role.direct ? " direct" : "", - access_str[role.access], - role.invalid ? " invalid" : "", - role.cr4_pae ? "" : "!", - role.nxe ? "" : "!", - role.cr0_wp ? "" : "!", - role.smep_and_not_wp ? " smep" : "", - role.smap_and_not_wp ? " smap" : "", - role.smm ? " smm" : ""); - } else - trace_seq_printf(s, "WORD: %08x", role.word); - - pevent_print_num_field(s, " root %u ", event, - "root_count", record, 1); - - if (pevent_get_field_val(s, event, "unsync", record, &val, 1) < 0) - return -1; - - trace_seq_printf(s, "%s%c", val ? "unsync" : "sync", 0); - return 0; -} - -static int kvm_mmu_get_page_handler(struct trace_seq *s, - struct pevent_record *record, - struct event_format *event, void *context) -{ - unsigned long long val; - - if (pevent_get_field_val(s, event, "created", record, &val, 1) < 0) - return -1; - - trace_seq_printf(s, "%s ", val ? "new" : "existing"); - - if (pevent_get_field_val(s, event, "gfn", record, &val, 1) < 0) - return -1; - - trace_seq_printf(s, "sp gfn %llx ", val); - return kvm_mmu_print_role(s, record, event, context); -} - -#define PT_WRITABLE_SHIFT 1 -#define PT_WRITABLE_MASK (1ULL << PT_WRITABLE_SHIFT) - -static unsigned long long -process_is_writable_pte(struct trace_seq *s, unsigned long long *args) -{ - unsigned long pte = args[0]; - return pte & PT_WRITABLE_MASK; -} - -int PEVENT_PLUGIN_LOADER(struct pevent *pevent) -{ - init_disassembler(); - - pevent_register_event_handler(pevent, -1, "kvm", "kvm_exit", - kvm_exit_handler, NULL); - - pevent_register_event_handler(pevent, -1, "kvm", "kvm_emulate_insn", - kvm_emulate_insn_handler, NULL); - - pevent_register_event_handler(pevent, -1, "kvm", "kvm_nested_vmexit", - kvm_nested_vmexit_handler, NULL); - - pevent_register_event_handler(pevent, -1, "kvm", "kvm_nested_vmexit_inject", - kvm_nested_vmexit_inject_handler, NULL); - - pevent_register_event_handler(pevent, -1, "kvmmmu", "kvm_mmu_get_page", - kvm_mmu_get_page_handler, NULL); - - pevent_register_event_handler(pevent, -1, "kvmmmu", "kvm_mmu_sync_page", - kvm_mmu_print_role, NULL); - - pevent_register_event_handler(pevent, -1, - "kvmmmu", "kvm_mmu_unsync_page", - kvm_mmu_print_role, NULL); - - pevent_register_event_handler(pevent, -1, "kvmmmu", "kvm_mmu_zap_page", - kvm_mmu_print_role, NULL); - - pevent_register_event_handler(pevent, -1, "kvmmmu", - "kvm_mmu_prepare_zap_page", kvm_mmu_print_role, - NULL); - - pevent_register_print_function(pevent, - process_is_writable_pte, - PEVENT_FUNC_ARG_INT, - "is_writable_pte", - PEVENT_FUNC_ARG_LONG, - PEVENT_FUNC_ARG_VOID); - return 0; -} - -void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) -{ - pevent_unregister_event_handler(pevent, -1, "kvm", "kvm_exit", - kvm_exit_handler, NULL); - - pevent_unregister_event_handler(pevent, -1, "kvm", "kvm_emulate_insn", - kvm_emulate_insn_handler, NULL); - - pevent_unregister_event_handler(pevent, -1, "kvm", "kvm_nested_vmexit", - kvm_nested_vmexit_handler, NULL); - - pevent_unregister_event_handler(pevent, -1, "kvm", "kvm_nested_vmexit_inject", - kvm_nested_vmexit_inject_handler, NULL); - - pevent_unregister_event_handler(pevent, -1, "kvmmmu", "kvm_mmu_get_page", - kvm_mmu_get_page_handler, NULL); - - pevent_unregister_event_handler(pevent, -1, "kvmmmu", "kvm_mmu_sync_page", - kvm_mmu_print_role, NULL); - - pevent_unregister_event_handler(pevent, -1, - "kvmmmu", "kvm_mmu_unsync_page", - kvm_mmu_print_role, NULL); - - pevent_unregister_event_handler(pevent, -1, "kvmmmu", "kvm_mmu_zap_page", - kvm_mmu_print_role, NULL); - - pevent_unregister_event_handler(pevent, -1, "kvmmmu", - "kvm_mmu_prepare_zap_page", kvm_mmu_print_role, - NULL); - - pevent_unregister_print_function(pevent, process_is_writable_pte, - "is_writable_pte"); -} diff --git a/tools/lib/traceevent/plugin_mac80211.c b/tools/lib/traceevent/plugin_mac80211.c deleted file mode 100644 index 7e15a0f1c2fd..000000000000 --- a/tools/lib/traceevent/plugin_mac80211.c +++ /dev/null @@ -1,102 +0,0 @@ -/* - * Copyright (C) 2009 Johannes Berg <johannes@sipsolutions.net> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; - * version 2.1 of the License (not later!) - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this program; if not, see <http://www.gnu.org/licenses> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "event-parse.h" - -#define INDENT 65 - -static void print_string(struct trace_seq *s, struct event_format *event, - const char *name, const void *data) -{ - struct format_field *f = pevent_find_field(event, name); - int offset; - int length; - - if (!f) { - trace_seq_printf(s, "NOTFOUND:%s", name); - return; - } - - offset = f->offset; - length = f->size; - - if (!strncmp(f->type, "__data_loc", 10)) { - unsigned long long v; - if (pevent_read_number_field(f, data, &v)) { - trace_seq_printf(s, "invalid_data_loc"); - return; - } - offset = v & 0xffff; - length = v >> 16; - } - - trace_seq_printf(s, "%.*s", length, (char *)data + offset); -} - -#define SF(fn) pevent_print_num_field(s, fn ":%d", event, fn, record, 0) -#define SFX(fn) pevent_print_num_field(s, fn ":%#x", event, fn, record, 0) -#define SP() trace_seq_putc(s, ' ') - -static int drv_bss_info_changed(struct trace_seq *s, - struct pevent_record *record, - struct event_format *event, void *context) -{ - void *data = record->data; - - print_string(s, event, "wiphy_name", data); - trace_seq_printf(s, " vif:"); - print_string(s, event, "vif_name", data); - pevent_print_num_field(s, "(%d)", event, "vif_type", record, 1); - - trace_seq_printf(s, "\n%*s", INDENT, ""); - SF("assoc"); SP(); - SF("aid"); SP(); - SF("cts"); SP(); - SF("shortpre"); SP(); - SF("shortslot"); SP(); - SF("dtimper"); SP(); - trace_seq_printf(s, "\n%*s", INDENT, ""); - SF("bcnint"); SP(); - SFX("assoc_cap"); SP(); - SFX("basic_rates"); SP(); - SF("enable_beacon"); - trace_seq_printf(s, "\n%*s", INDENT, ""); - SF("ht_operation_mode"); - - return 0; -} - -int PEVENT_PLUGIN_LOADER(struct pevent *pevent) -{ - pevent_register_event_handler(pevent, -1, "mac80211", - "drv_bss_info_changed", - drv_bss_info_changed, NULL); - return 0; -} - -void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) -{ - pevent_unregister_event_handler(pevent, -1, "mac80211", - "drv_bss_info_changed", - drv_bss_info_changed, NULL); -} diff --git a/tools/lib/traceevent/plugin_sched_switch.c b/tools/lib/traceevent/plugin_sched_switch.c deleted file mode 100644 index ec30c2fcbac0..000000000000 --- a/tools/lib/traceevent/plugin_sched_switch.c +++ /dev/null @@ -1,160 +0,0 @@ -/* - * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; - * version 2.1 of the License (not later!) - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this program; if not, see <http://www.gnu.org/licenses> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "event-parse.h" - -static void write_state(struct trace_seq *s, int val) -{ - const char states[] = "SDTtZXxW"; - int found = 0; - int i; - - for (i = 0; i < (sizeof(states) - 1); i++) { - if (!(val & (1 << i))) - continue; - - if (found) - trace_seq_putc(s, '|'); - - found = 1; - trace_seq_putc(s, states[i]); - } - - if (!found) - trace_seq_putc(s, 'R'); -} - -static void write_and_save_comm(struct format_field *field, - struct pevent_record *record, - struct trace_seq *s, int pid) -{ - const char *comm; - int len; - - comm = (char *)(record->data + field->offset); - len = s->len; - trace_seq_printf(s, "%.*s", - field->size, comm); - - /* make sure the comm has a \0 at the end. */ - trace_seq_terminate(s); - comm = &s->buffer[len]; - - /* Help out the comm to ids. This will handle dups */ - pevent_register_comm(field->event->pevent, comm, pid); -} - -static int sched_wakeup_handler(struct trace_seq *s, - struct pevent_record *record, - struct event_format *event, void *context) -{ - struct format_field *field; - unsigned long long val; - - if (pevent_get_field_val(s, event, "pid", record, &val, 1)) - return trace_seq_putc(s, '!'); - - field = pevent_find_any_field(event, "comm"); - if (field) { - write_and_save_comm(field, record, s, val); - trace_seq_putc(s, ':'); - } - trace_seq_printf(s, "%lld", val); - - if (pevent_get_field_val(s, event, "prio", record, &val, 0) == 0) - trace_seq_printf(s, " [%lld]", val); - - if (pevent_get_field_val(s, event, "success", record, &val, 1) == 0) - trace_seq_printf(s, " success=%lld", val); - - if (pevent_get_field_val(s, event, "target_cpu", record, &val, 0) == 0) - trace_seq_printf(s, " CPU:%03llu", val); - - return 0; -} - -static int sched_switch_handler(struct trace_seq *s, - struct pevent_record *record, - struct event_format *event, void *context) -{ - struct format_field *field; - unsigned long long val; - - if (pevent_get_field_val(s, event, "prev_pid", record, &val, 1)) - return trace_seq_putc(s, '!'); - - field = pevent_find_any_field(event, "prev_comm"); - if (field) { - write_and_save_comm(field, record, s, val); - trace_seq_putc(s, ':'); - } - trace_seq_printf(s, "%lld ", val); - - if (pevent_get_field_val(s, event, "prev_prio", record, &val, 0) == 0) - trace_seq_printf(s, "[%d] ", (int) val); - - if (pevent_get_field_val(s, event, "prev_state", record, &val, 0) == 0) - write_state(s, val); - - trace_seq_puts(s, " ==> "); - - if (pevent_get_field_val(s, event, "next_pid", record, &val, 1)) - return trace_seq_putc(s, '!'); - - field = pevent_find_any_field(event, "next_comm"); - if (field) { - write_and_save_comm(field, record, s, val); - trace_seq_putc(s, ':'); - } - trace_seq_printf(s, "%lld", val); - - if (pevent_get_field_val(s, event, "next_prio", record, &val, 0) == 0) - trace_seq_printf(s, " [%d]", (int) val); - - return 0; -} - -int PEVENT_PLUGIN_LOADER(struct pevent *pevent) -{ - pevent_register_event_handler(pevent, -1, "sched", "sched_switch", - sched_switch_handler, NULL); - - pevent_register_event_handler(pevent, -1, "sched", "sched_wakeup", - sched_wakeup_handler, NULL); - - pevent_register_event_handler(pevent, -1, "sched", "sched_wakeup_new", - sched_wakeup_handler, NULL); - return 0; -} - -void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) -{ - pevent_unregister_event_handler(pevent, -1, "sched", "sched_switch", - sched_switch_handler, NULL); - - pevent_unregister_event_handler(pevent, -1, "sched", "sched_wakeup", - sched_wakeup_handler, NULL); - - pevent_unregister_event_handler(pevent, -1, "sched", "sched_wakeup_new", - sched_wakeup_handler, NULL); -} diff --git a/tools/lib/traceevent/plugin_scsi.c b/tools/lib/traceevent/plugin_scsi.c deleted file mode 100644 index 3727de48c8d5..000000000000 --- a/tools/lib/traceevent/plugin_scsi.c +++ /dev/null @@ -1,432 +0,0 @@ -#include <stdio.h> -#include <string.h> -#include <inttypes.h> -#include "event-parse.h" - -typedef unsigned long sector_t; -typedef uint64_t u64; -typedef unsigned int u32; - -/* - * SCSI opcodes - */ -#define TEST_UNIT_READY 0x00 -#define REZERO_UNIT 0x01 -#define REQUEST_SENSE 0x03 -#define FORMAT_UNIT 0x04 -#define READ_BLOCK_LIMITS 0x05 -#define REASSIGN_BLOCKS 0x07 -#define INITIALIZE_ELEMENT_STATUS 0x07 -#define READ_6 0x08 -#define WRITE_6 0x0a -#define SEEK_6 0x0b -#define READ_REVERSE 0x0f -#define WRITE_FILEMARKS 0x10 -#define SPACE 0x11 -#define INQUIRY 0x12 -#define RECOVER_BUFFERED_DATA 0x14 -#define MODE_SELECT 0x15 -#define RESERVE 0x16 -#define RELEASE 0x17 -#define COPY 0x18 -#define ERASE 0x19 -#define MODE_SENSE 0x1a -#define START_STOP 0x1b -#define RECEIVE_DIAGNOSTIC 0x1c -#define SEND_DIAGNOSTIC 0x1d -#define ALLOW_MEDIUM_REMOVAL 0x1e - -#define READ_FORMAT_CAPACITIES 0x23 -#define SET_WINDOW 0x24 -#define READ_CAPACITY 0x25 -#define READ_10 0x28 -#define WRITE_10 0x2a -#define SEEK_10 0x2b -#define POSITION_TO_ELEMENT 0x2b -#define WRITE_VERIFY 0x2e -#define VERIFY 0x2f -#define SEARCH_HIGH 0x30 -#define SEARCH_EQUAL 0x31 -#define SEARCH_LOW 0x32 -#define SET_LIMITS 0x33 -#define PRE_FETCH 0x34 -#define READ_POSITION 0x34 -#define SYNCHRONIZE_CACHE 0x35 -#define LOCK_UNLOCK_CACHE 0x36 -#define READ_DEFECT_DATA 0x37 -#define MEDIUM_SCAN 0x38 -#define COMPARE 0x39 -#define COPY_VERIFY 0x3a -#define WRITE_BUFFER 0x3b -#define READ_BUFFER 0x3c -#define UPDATE_BLOCK 0x3d -#define READ_LONG 0x3e -#define WRITE_LONG 0x3f -#define CHANGE_DEFINITION 0x40 -#define WRITE_SAME 0x41 -#define UNMAP 0x42 -#define READ_TOC 0x43 -#define READ_HEADER 0x44 -#define GET_EVENT_STATUS_NOTIFICATION 0x4a -#define LOG_SELECT 0x4c -#define LOG_SENSE 0x4d -#define XDWRITEREAD_10 0x53 -#define MODE_SELECT_10 0x55 -#define RESERVE_10 0x56 -#define RELEASE_10 0x57 -#define MODE_SENSE_10 0x5a -#define PERSISTENT_RESERVE_IN 0x5e -#define PERSISTENT_RESERVE_OUT 0x5f -#define VARIABLE_LENGTH_CMD 0x7f -#define REPORT_LUNS 0xa0 -#define SECURITY_PROTOCOL_IN 0xa2 -#define MAINTENANCE_IN 0xa3 -#define MAINTENANCE_OUT 0xa4 -#define MOVE_MEDIUM 0xa5 -#define EXCHANGE_MEDIUM 0xa6 -#define READ_12 0xa8 -#define SERVICE_ACTION_OUT_12 0xa9 -#define WRITE_12 0xaa -#define SERVICE_ACTION_IN_12 0xab -#define WRITE_VERIFY_12 0xae -#define VERIFY_12 0xaf -#define SEARCH_HIGH_12 0xb0 -#define SEARCH_EQUAL_12 0xb1 -#define SEARCH_LOW_12 0xb2 -#define SECURITY_PROTOCOL_OUT 0xb5 -#define READ_ELEMENT_STATUS 0xb8 -#define SEND_VOLUME_TAG 0xb6 -#define WRITE_LONG_2 0xea -#define EXTENDED_COPY 0x83 -#define RECEIVE_COPY_RESULTS 0x84 -#define ACCESS_CONTROL_IN 0x86 -#define ACCESS_CONTROL_OUT 0x87 -#define READ_16 0x88 -#define WRITE_16 0x8a -#define READ_ATTRIBUTE 0x8c -#define WRITE_ATTRIBUTE 0x8d -#define VERIFY_16 0x8f -#define SYNCHRONIZE_CACHE_16 0x91 -#define WRITE_SAME_16 0x93 -#define SERVICE_ACTION_BIDIRECTIONAL 0x9d -#define SERVICE_ACTION_IN_16 0x9e -#define SERVICE_ACTION_OUT_16 0x9f -/* values for service action in */ -#define SAI_READ_CAPACITY_16 0x10 -#define SAI_GET_LBA_STATUS 0x12 -/* values for VARIABLE_LENGTH_CMD service action codes - * see spc4r17 Section D.3.5, table D.7 and D.8 */ -#define VLC_SA_RECEIVE_CREDENTIAL 0x1800 -/* values for maintenance in */ -#define MI_REPORT_IDENTIFYING_INFORMATION 0x05 -#define MI_REPORT_TARGET_PGS 0x0a -#define MI_REPORT_ALIASES 0x0b -#define MI_REPORT_SUPPORTED_OPERATION_CODES 0x0c -#define MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS 0x0d -#define MI_REPORT_PRIORITY 0x0e -#define MI_REPORT_TIMESTAMP 0x0f -#define MI_MANAGEMENT_PROTOCOL_IN 0x10 -/* value for MI_REPORT_TARGET_PGS ext header */ -#define MI_EXT_HDR_PARAM_FMT 0x20 -/* values for maintenance out */ -#define MO_SET_IDENTIFYING_INFORMATION 0x06 -#define MO_SET_TARGET_PGS 0x0a -#define MO_CHANGE_ALIASES 0x0b -#define MO_SET_PRIORITY 0x0e -#define MO_SET_TIMESTAMP 0x0f -#define MO_MANAGEMENT_PROTOCOL_OUT 0x10 -/* values for variable length command */ -#define XDREAD_32 0x03 -#define XDWRITE_32 0x04 -#define XPWRITE_32 0x06 -#define XDWRITEREAD_32 0x07 -#define READ_32 0x09 -#define VERIFY_32 0x0a -#define WRITE_32 0x0b -#define WRITE_SAME_32 0x0d - -#define SERVICE_ACTION16(cdb) (cdb[1] & 0x1f) -#define SERVICE_ACTION32(cdb) ((cdb[8] << 8) | cdb[9]) - -static const char * -scsi_trace_misc(struct trace_seq *, unsigned char *, int); - -static const char * -scsi_trace_rw6(struct trace_seq *p, unsigned char *cdb, int len) -{ - const char *ret = p->buffer + p->len; - sector_t lba = 0, txlen = 0; - - lba |= ((cdb[1] & 0x1F) << 16); - lba |= (cdb[2] << 8); - lba |= cdb[3]; - txlen = cdb[4]; - - trace_seq_printf(p, "lba=%llu txlen=%llu", - (unsigned long long)lba, (unsigned long long)txlen); - trace_seq_putc(p, 0); - return ret; -} - -static const char * -scsi_trace_rw10(struct trace_seq *p, unsigned char *cdb, int len) -{ - const char *ret = p->buffer + p->len; - sector_t lba = 0, txlen = 0; - - lba |= (cdb[2] << 24); - lba |= (cdb[3] << 16); - lba |= (cdb[4] << 8); - lba |= cdb[5]; - txlen |= (cdb[7] << 8); - txlen |= cdb[8]; - - trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u", - (unsigned long long)lba, (unsigned long long)txlen, - cdb[1] >> 5); - - if (cdb[0] == WRITE_SAME) - trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1); - - trace_seq_putc(p, 0); - return ret; -} - -static const char * -scsi_trace_rw12(struct trace_seq *p, unsigned char *cdb, int len) -{ - const char *ret = p->buffer + p->len; - sector_t lba = 0, txlen = 0; - - lba |= (cdb[2] << 24); - lba |= (cdb[3] << 16); - lba |= (cdb[4] << 8); - lba |= cdb[5]; - txlen |= (cdb[6] << 24); - txlen |= (cdb[7] << 16); - txlen |= (cdb[8] << 8); - txlen |= cdb[9]; - - trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u", - (unsigned long long)lba, (unsigned long long)txlen, - cdb[1] >> 5); - trace_seq_putc(p, 0); - return ret; -} - -static const char * -scsi_trace_rw16(struct trace_seq *p, unsigned char *cdb, int len) -{ - const char *ret = p->buffer + p->len; - sector_t lba = 0, txlen = 0; - - lba |= ((u64)cdb[2] << 56); - lba |= ((u64)cdb[3] << 48); - lba |= ((u64)cdb[4] << 40); - lba |= ((u64)cdb[5] << 32); - lba |= (cdb[6] << 24); - lba |= (cdb[7] << 16); - lba |= (cdb[8] << 8); - lba |= cdb[9]; - txlen |= (cdb[10] << 24); - txlen |= (cdb[11] << 16); - txlen |= (cdb[12] << 8); - txlen |= cdb[13]; - - trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u", - (unsigned long long)lba, (unsigned long long)txlen, - cdb[1] >> 5); - - if (cdb[0] == WRITE_SAME_16) - trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1); - - trace_seq_putc(p, 0); - return ret; -} - -static const char * -scsi_trace_rw32(struct trace_seq *p, unsigned char *cdb, int len) -{ - const char *ret = p->buffer + p->len, *cmd; - sector_t lba = 0, txlen = 0; - u32 ei_lbrt = 0; - - switch (SERVICE_ACTION32(cdb)) { - case READ_32: - cmd = "READ"; - break; - case VERIFY_32: - cmd = "VERIFY"; - break; - case WRITE_32: - cmd = "WRITE"; - break; - case WRITE_SAME_32: - cmd = "WRITE_SAME"; - break; - default: - trace_seq_printf(p, "UNKNOWN"); - goto out; - } - - lba |= ((u64)cdb[12] << 56); - lba |= ((u64)cdb[13] << 48); - lba |= ((u64)cdb[14] << 40); - lba |= ((u64)cdb[15] << 32); - lba |= (cdb[16] << 24); - lba |= (cdb[17] << 16); - lba |= (cdb[18] << 8); - lba |= cdb[19]; - ei_lbrt |= (cdb[20] << 24); - ei_lbrt |= (cdb[21] << 16); - ei_lbrt |= (cdb[22] << 8); - ei_lbrt |= cdb[23]; - txlen |= (cdb[28] << 24); - txlen |= (cdb[29] << 16); - txlen |= (cdb[30] << 8); - txlen |= cdb[31]; - - trace_seq_printf(p, "%s_32 lba=%llu txlen=%llu protect=%u ei_lbrt=%u", - cmd, (unsigned long long)lba, - (unsigned long long)txlen, cdb[10] >> 5, ei_lbrt); - - if (SERVICE_ACTION32(cdb) == WRITE_SAME_32) - trace_seq_printf(p, " unmap=%u", cdb[10] >> 3 & 1); - -out: - trace_seq_putc(p, 0); - return ret; -} - -static const char * -scsi_trace_unmap(struct trace_seq *p, unsigned char *cdb, int len) -{ - const char *ret = p->buffer + p->len; - unsigned int regions = cdb[7] << 8 | cdb[8]; - - trace_seq_printf(p, "regions=%u", (regions - 8) / 16); - trace_seq_putc(p, 0); - return ret; -} - -static const char * -scsi_trace_service_action_in(struct trace_seq *p, unsigned char *cdb, int len) -{ - const char *ret = p->buffer + p->len, *cmd; - sector_t lba = 0; - u32 alloc_len = 0; - - switch (SERVICE_ACTION16(cdb)) { - case SAI_READ_CAPACITY_16: - cmd = "READ_CAPACITY_16"; - break; - case SAI_GET_LBA_STATUS: - cmd = "GET_LBA_STATUS"; - break; - default: - trace_seq_printf(p, "UNKNOWN"); - goto out; - } - - lba |= ((u64)cdb[2] << 56); - lba |= ((u64)cdb[3] << 48); - lba |= ((u64)cdb[4] << 40); - lba |= ((u64)cdb[5] << 32); - lba |= (cdb[6] << 24); - lba |= (cdb[7] << 16); - lba |= (cdb[8] << 8); - lba |= cdb[9]; - alloc_len |= (cdb[10] << 24); - alloc_len |= (cdb[11] << 16); - alloc_len |= (cdb[12] << 8); - alloc_len |= cdb[13]; - - trace_seq_printf(p, "%s lba=%llu alloc_len=%u", cmd, - (unsigned long long)lba, alloc_len); - -out: - trace_seq_putc(p, 0); - return ret; -} - -static const char * -scsi_trace_varlen(struct trace_seq *p, unsigned char *cdb, int len) -{ - switch (SERVICE_ACTION32(cdb)) { - case READ_32: - case VERIFY_32: - case WRITE_32: - case WRITE_SAME_32: - return scsi_trace_rw32(p, cdb, len); - default: - return scsi_trace_misc(p, cdb, len); - } -} - -static const char * -scsi_trace_misc(struct trace_seq *p, unsigned char *cdb, int len) -{ - const char *ret = p->buffer + p->len; - - trace_seq_printf(p, "-"); - trace_seq_putc(p, 0); - return ret; -} - -const char * -scsi_trace_parse_cdb(struct trace_seq *p, unsigned char *cdb, int len) -{ - switch (cdb[0]) { - case READ_6: - case WRITE_6: - return scsi_trace_rw6(p, cdb, len); - case READ_10: - case VERIFY: - case WRITE_10: - case WRITE_SAME: - return scsi_trace_rw10(p, cdb, len); - case READ_12: - case VERIFY_12: - case WRITE_12: - return scsi_trace_rw12(p, cdb, len); - case READ_16: - case VERIFY_16: - case WRITE_16: - case WRITE_SAME_16: - return scsi_trace_rw16(p, cdb, len); - case UNMAP: - return scsi_trace_unmap(p, cdb, len); - case SERVICE_ACTION_IN_16: - return scsi_trace_service_action_in(p, cdb, len); - case VARIABLE_LENGTH_CMD: - return scsi_trace_varlen(p, cdb, len); - default: - return scsi_trace_misc(p, cdb, len); - } -} - -unsigned long long process_scsi_trace_parse_cdb(struct trace_seq *s, - unsigned long long *args) -{ - scsi_trace_parse_cdb(s, (unsigned char *) (unsigned long) args[1], args[2]); - return 0; -} - -int PEVENT_PLUGIN_LOADER(struct pevent *pevent) -{ - pevent_register_print_function(pevent, - process_scsi_trace_parse_cdb, - PEVENT_FUNC_ARG_STRING, - "scsi_trace_parse_cdb", - PEVENT_FUNC_ARG_PTR, - PEVENT_FUNC_ARG_PTR, - PEVENT_FUNC_ARG_INT, - PEVENT_FUNC_ARG_VOID); - return 0; -} - -void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) -{ - pevent_unregister_print_function(pevent, process_scsi_trace_parse_cdb, - "scsi_trace_parse_cdb"); -} diff --git a/tools/lib/traceevent/plugin_xen.c b/tools/lib/traceevent/plugin_xen.c deleted file mode 100644 index 3a413eaada68..000000000000 --- a/tools/lib/traceevent/plugin_xen.c +++ /dev/null @@ -1,136 +0,0 @@ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include "event-parse.h" - -#define __HYPERVISOR_set_trap_table 0 -#define __HYPERVISOR_mmu_update 1 -#define __HYPERVISOR_set_gdt 2 -#define __HYPERVISOR_stack_switch 3 -#define __HYPERVISOR_set_callbacks 4 -#define __HYPERVISOR_fpu_taskswitch 5 -#define __HYPERVISOR_sched_op_compat 6 -#define __HYPERVISOR_dom0_op 7 -#define __HYPERVISOR_set_debugreg 8 -#define __HYPERVISOR_get_debugreg 9 -#define __HYPERVISOR_update_descriptor 10 -#define __HYPERVISOR_memory_op 12 -#define __HYPERVISOR_multicall 13 -#define __HYPERVISOR_update_va_mapping 14 -#define __HYPERVISOR_set_timer_op 15 -#define __HYPERVISOR_event_channel_op_compat 16 -#define __HYPERVISOR_xen_version 17 -#define __HYPERVISOR_console_io 18 -#define __HYPERVISOR_physdev_op_compat 19 -#define __HYPERVISOR_grant_table_op 20 -#define __HYPERVISOR_vm_assist 21 -#define __HYPERVISOR_update_va_mapping_otherdomain 22 -#define __HYPERVISOR_iret 23 /* x86 only */ -#define __HYPERVISOR_vcpu_op 24 -#define __HYPERVISOR_set_segment_base 25 /* x86/64 only */ -#define __HYPERVISOR_mmuext_op 26 -#define __HYPERVISOR_acm_op 27 -#define __HYPERVISOR_nmi_op 28 -#define __HYPERVISOR_sched_op 29 -#define __HYPERVISOR_callback_op 30 -#define __HYPERVISOR_xenoprof_op 31 -#define __HYPERVISOR_event_channel_op 32 -#define __HYPERVISOR_physdev_op 33 -#define __HYPERVISOR_hvm_op 34 -#define __HYPERVISOR_tmem_op 38 - -/* Architecture-specific hypercall definitions. */ -#define __HYPERVISOR_arch_0 48 -#define __HYPERVISOR_arch_1 49 -#define __HYPERVISOR_arch_2 50 -#define __HYPERVISOR_arch_3 51 -#define __HYPERVISOR_arch_4 52 -#define __HYPERVISOR_arch_5 53 -#define __HYPERVISOR_arch_6 54 -#define __HYPERVISOR_arch_7 55 - -#define N(x) [__HYPERVISOR_##x] = "("#x")" -static const char *xen_hypercall_names[] = { - N(set_trap_table), - N(mmu_update), - N(set_gdt), - N(stack_switch), - N(set_callbacks), - N(fpu_taskswitch), - N(sched_op_compat), - N(dom0_op), - N(set_debugreg), - N(get_debugreg), - N(update_descriptor), - N(memory_op), - N(multicall), - N(update_va_mapping), - N(set_timer_op), - N(event_channel_op_compat), - N(xen_version), - N(console_io), - N(physdev_op_compat), - N(grant_table_op), - N(vm_assist), - N(update_va_mapping_otherdomain), - N(iret), - N(vcpu_op), - N(set_segment_base), - N(mmuext_op), - N(acm_op), - N(nmi_op), - N(sched_op), - N(callback_op), - N(xenoprof_op), - N(event_channel_op), - N(physdev_op), - N(hvm_op), - -/* Architecture-specific hypercall definitions. */ - N(arch_0), - N(arch_1), - N(arch_2), - N(arch_3), - N(arch_4), - N(arch_5), - N(arch_6), - N(arch_7), -}; -#undef N - -#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) - -static const char *xen_hypercall_name(unsigned op) -{ - if (op < ARRAY_SIZE(xen_hypercall_names) && - xen_hypercall_names[op] != NULL) - return xen_hypercall_names[op]; - - return ""; -} - -unsigned long long process_xen_hypercall_name(struct trace_seq *s, - unsigned long long *args) -{ - unsigned int op = args[0]; - - trace_seq_printf(s, "%s", xen_hypercall_name(op)); - return 0; -} - -int PEVENT_PLUGIN_LOADER(struct pevent *pevent) -{ - pevent_register_print_function(pevent, - process_xen_hypercall_name, - PEVENT_FUNC_ARG_STRING, - "xen_hypercall_name", - PEVENT_FUNC_ARG_INT, - PEVENT_FUNC_ARG_VOID); - return 0; -} - -void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) -{ - pevent_unregister_print_function(pevent, process_xen_hypercall_name, - "xen_hypercall_name"); -} diff --git a/tools/lib/traceevent/trace-seq.c b/tools/lib/traceevent/trace-seq.c deleted file mode 100644 index 292dc9f1d233..000000000000 --- a/tools/lib/traceevent/trace-seq.c +++ /dev/null @@ -1,254 +0,0 @@ -/* - * Copyright (C) 2009 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; - * version 2.1 of the License (not later!) - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this program; if not, see <http://www.gnu.org/licenses> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <stdarg.h> - -#include <asm/bug.h> -#include "event-parse.h" -#include "event-utils.h" - -/* - * The TRACE_SEQ_POISON is to catch the use of using - * a trace_seq structure after it was destroyed. - */ -#define TRACE_SEQ_POISON ((void *)0xdeadbeef) -#define TRACE_SEQ_CHECK(s) \ -do { \ - if (WARN_ONCE((s)->buffer == TRACE_SEQ_POISON, \ - "Usage of trace_seq after it was destroyed")) \ - (s)->state = TRACE_SEQ__BUFFER_POISONED; \ -} while (0) - -#define TRACE_SEQ_CHECK_RET_N(s, n) \ -do { \ - TRACE_SEQ_CHECK(s); \ - if ((s)->state != TRACE_SEQ__GOOD) \ - return n; \ -} while (0) - -#define TRACE_SEQ_CHECK_RET(s) TRACE_SEQ_CHECK_RET_N(s, ) -#define TRACE_SEQ_CHECK_RET0(s) TRACE_SEQ_CHECK_RET_N(s, 0) - -/** - * trace_seq_init - initialize the trace_seq structure - * @s: a pointer to the trace_seq structure to initialize - */ -void trace_seq_init(struct trace_seq *s) -{ - s->len = 0; - s->readpos = 0; - s->buffer_size = TRACE_SEQ_BUF_SIZE; - s->buffer = malloc(s->buffer_size); - if (s->buffer != NULL) - s->state = TRACE_SEQ__GOOD; - else - s->state = TRACE_SEQ__MEM_ALLOC_FAILED; -} - -/** - * trace_seq_reset - re-initialize the trace_seq structure - * @s: a pointer to the trace_seq structure to reset - */ -void trace_seq_reset(struct trace_seq *s) -{ - if (!s) - return; - TRACE_SEQ_CHECK(s); - s->len = 0; - s->readpos = 0; -} - -/** - * trace_seq_destroy - free up memory of a trace_seq - * @s: a pointer to the trace_seq to free the buffer - * - * Only frees the buffer, not the trace_seq struct itself. - */ -void trace_seq_destroy(struct trace_seq *s) -{ - if (!s) - return; - TRACE_SEQ_CHECK_RET(s); - free(s->buffer); - s->buffer = TRACE_SEQ_POISON; -} - -static void expand_buffer(struct trace_seq *s) -{ - char *buf; - - buf = realloc(s->buffer, s->buffer_size + TRACE_SEQ_BUF_SIZE); - if (WARN_ONCE(!buf, "Can't allocate trace_seq buffer memory")) { - s->state = TRACE_SEQ__MEM_ALLOC_FAILED; - return; - } - - s->buffer = buf; - s->buffer_size += TRACE_SEQ_BUF_SIZE; -} - -/** - * trace_seq_printf - sequence printing of trace information - * @s: trace sequence descriptor - * @fmt: printf format string - * - * It returns 0 if the trace oversizes the buffer's free - * space, 1 otherwise. - * - * The tracer may use either sequence operations or its own - * copy to user routines. To simplify formating of a trace - * trace_seq_printf is used to store strings into a special - * buffer (@s). Then the output may be either used by - * the sequencer or pulled into another buffer. - */ -int -trace_seq_printf(struct trace_seq *s, const char *fmt, ...) -{ - va_list ap; - int len; - int ret; - - try_again: - TRACE_SEQ_CHECK_RET0(s); - - len = (s->buffer_size - 1) - s->len; - - va_start(ap, fmt); - ret = vsnprintf(s->buffer + s->len, len, fmt, ap); - va_end(ap); - - if (ret >= len) { - expand_buffer(s); - goto try_again; - } - - s->len += ret; - - return 1; -} - -/** - * trace_seq_vprintf - sequence printing of trace information - * @s: trace sequence descriptor - * @fmt: printf format string - * - * The tracer may use either sequence operations or its own - * copy to user routines. To simplify formating of a trace - * trace_seq_printf is used to store strings into a special - * buffer (@s). Then the output may be either used by - * the sequencer or pulled into another buffer. - */ -int -trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args) -{ - int len; - int ret; - - try_again: - TRACE_SEQ_CHECK_RET0(s); - - len = (s->buffer_size - 1) - s->len; - - ret = vsnprintf(s->buffer + s->len, len, fmt, args); - - if (ret >= len) { - expand_buffer(s); - goto try_again; - } - - s->len += ret; - - return len; -} - -/** - * trace_seq_puts - trace sequence printing of simple string - * @s: trace sequence descriptor - * @str: simple string to record - * - * The tracer may use either the sequence operations or its own - * copy to user routines. This function records a simple string - * into a special buffer (@s) for later retrieval by a sequencer - * or other mechanism. - */ -int trace_seq_puts(struct trace_seq *s, const char *str) -{ - int len; - - TRACE_SEQ_CHECK_RET0(s); - - len = strlen(str); - - while (len > ((s->buffer_size - 1) - s->len)) - expand_buffer(s); - - TRACE_SEQ_CHECK_RET0(s); - - memcpy(s->buffer + s->len, str, len); - s->len += len; - - return len; -} - -int trace_seq_putc(struct trace_seq *s, unsigned char c) -{ - TRACE_SEQ_CHECK_RET0(s); - - while (s->len >= (s->buffer_size - 1)) - expand_buffer(s); - - TRACE_SEQ_CHECK_RET0(s); - - s->buffer[s->len++] = c; - - return 1; -} - -void trace_seq_terminate(struct trace_seq *s) -{ - TRACE_SEQ_CHECK_RET(s); - - /* There's always one character left on the buffer */ - s->buffer[s->len] = 0; -} - -int trace_seq_do_fprintf(struct trace_seq *s, FILE *fp) -{ - TRACE_SEQ_CHECK(s); - - switch (s->state) { - case TRACE_SEQ__GOOD: - return fprintf(fp, "%.*s", s->len, s->buffer); - case TRACE_SEQ__BUFFER_POISONED: - fprintf(fp, "%s\n", "Usage of trace_seq after it was destroyed"); - break; - case TRACE_SEQ__MEM_ALLOC_FAILED: - fprintf(fp, "%s\n", "Can't allocate trace_seq buffer memory"); - break; - } - return -1; -} - -int trace_seq_do_printf(struct trace_seq *s) -{ - return trace_seq_do_fprintf(s, stdout); -} |