From b3fd7368f8f60bc9a7ffc2a5311db5f4dbd42180 Mon Sep 17 00:00:00 2001 From: Pali Rohár Date: Sat, 6 Jun 2015 15:42:28 +0200 Subject: Move freefall program from Documentation/ to tools/ MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Pali Rohár Acked-by: Pavel Machek Signed-off-by: Jonathan Corbet --- Documentation/laptops/.gitignore | 1 - Documentation/laptops/00-INDEX | 2 - Documentation/laptops/Makefile | 2 +- Documentation/laptops/freefall.c | 174 --------------------------------------- tools/Makefile | 14 +++- tools/laptop/freefall/Makefile | 17 ++++ tools/laptop/freefall/freefall.c | 174 +++++++++++++++++++++++++++++++++++++++ 7 files changed, 204 insertions(+), 180 deletions(-) delete mode 100644 Documentation/laptops/freefall.c create mode 100644 tools/laptop/freefall/Makefile create mode 100644 tools/laptop/freefall/freefall.c diff --git a/Documentation/laptops/.gitignore b/Documentation/laptops/.gitignore index da2bd065f4bc..9fc984e64386 100644 --- a/Documentation/laptops/.gitignore +++ b/Documentation/laptops/.gitignore @@ -1,2 +1 @@ dslm -freefall diff --git a/Documentation/laptops/00-INDEX b/Documentation/laptops/00-INDEX index a3b4f209e562..7c0ac2a26b9e 100644 --- a/Documentation/laptops/00-INDEX +++ b/Documentation/laptops/00-INDEX @@ -8,8 +8,6 @@ disk-shock-protection.txt - information on hard disk shock protection. dslm.c - Simple Disk Sleep Monitor program -freefall.c - - (HP/DELL) laptop accelerometer program for disk protection. laptop-mode.txt - how to conserve battery power using laptop-mode. sony-laptop.txt diff --git a/Documentation/laptops/Makefile b/Documentation/laptops/Makefile index 2b0fa5edf1d3..0abe44f68965 100644 --- a/Documentation/laptops/Makefile +++ b/Documentation/laptops/Makefile @@ -1,5 +1,5 @@ # List of programs to build -hostprogs-y := dslm freefall +hostprogs-y := dslm # Tell kbuild to always build the programs always := $(hostprogs-y) diff --git a/Documentation/laptops/freefall.c b/Documentation/laptops/freefall.c deleted file mode 100644 index 5e44b20b1848..000000000000 --- a/Documentation/laptops/freefall.c +++ /dev/null @@ -1,174 +0,0 @@ -/* Disk protection for HP/DELL machines. - * - * Copyright 2008 Eric Piel - * Copyright 2009 Pavel Machek - * Copyright 2012 Sonal Santan - * Copyright 2014 Pali Rohár - * - * GPLv2. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -static int noled; -static char unload_heads_path[64]; -static char device_path[32]; -static const char app_name[] = "FREE FALL"; - -static int set_unload_heads_path(char *device) -{ - if (strlen(device) <= 5 || strncmp(device, "/dev/", 5) != 0) - return -EINVAL; - strncpy(device_path, device, sizeof(device_path) - 1); - - snprintf(unload_heads_path, sizeof(unload_heads_path) - 1, - "/sys/block/%s/device/unload_heads", device+5); - return 0; -} - -static int valid_disk(void) -{ - int fd = open(unload_heads_path, O_RDONLY); - - if (fd < 0) { - perror(unload_heads_path); - return 0; - } - - close(fd); - return 1; -} - -static void write_int(char *path, int i) -{ - char buf[1024]; - int fd = open(path, O_RDWR); - - if (fd < 0) { - perror("open"); - exit(1); - } - - sprintf(buf, "%d", i); - - if (write(fd, buf, strlen(buf)) != strlen(buf)) { - perror("write"); - exit(1); - } - - close(fd); -} - -static void set_led(int on) -{ - if (noled) - return; - write_int("/sys/class/leds/hp::hddprotect/brightness", on); -} - -static void protect(int seconds) -{ - const char *str = (seconds == 0) ? "Unparked" : "Parked"; - - write_int(unload_heads_path, seconds*1000); - syslog(LOG_INFO, "%s %s disk head\n", str, device_path); -} - -static int on_ac(void) -{ - /* /sys/class/power_supply/AC0/online */ - return 1; -} - -static int lid_open(void) -{ - /* /proc/acpi/button/lid/LID/state */ - return 1; -} - -static void ignore_me(int signum) -{ - protect(0); - set_led(0); -} - -int main(int argc, char **argv) -{ - int fd, ret; - struct stat st; - struct sched_param param; - - if (argc == 1) - ret = set_unload_heads_path("/dev/sda"); - else if (argc == 2) - ret = set_unload_heads_path(argv[1]); - else - ret = -EINVAL; - - if (ret || !valid_disk()) { - fprintf(stderr, "usage: %s (default: /dev/sda)\n", - argv[0]); - exit(1); - } - - fd = open("/dev/freefall", O_RDONLY); - if (fd < 0) { - perror("/dev/freefall"); - return EXIT_FAILURE; - } - - if (stat("/sys/class/leds/hp::hddprotect/brightness", &st)) - noled = 1; - - if (daemon(0, 0) != 0) { - perror("daemon"); - return EXIT_FAILURE; - } - - openlog(app_name, LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL1); - - param.sched_priority = sched_get_priority_max(SCHED_FIFO); - sched_setscheduler(0, SCHED_FIFO, ¶m); - mlockall(MCL_CURRENT|MCL_FUTURE); - - signal(SIGALRM, ignore_me); - - for (;;) { - unsigned char count; - - ret = read(fd, &count, sizeof(count)); - alarm(0); - if ((ret == -1) && (errno == EINTR)) { - /* Alarm expired, time to unpark the heads */ - continue; - } - - if (ret != sizeof(count)) { - perror("read"); - break; - } - - protect(21); - set_led(1); - if (1 || on_ac() || lid_open()) - alarm(2); - else - alarm(20); - } - - closelog(); - close(fd); - return EXIT_SUCCESS; -} diff --git a/tools/Makefile b/tools/Makefile index 9a617adc6675..4557c39805e7 100644 --- a/tools/Makefile +++ b/tools/Makefile @@ -18,6 +18,7 @@ help: @echo ' vm - misc vm tools' @echo ' x86_energy_perf_policy - Intel energy policy tool' @echo ' tmon - thermal monitoring and tuning tool' + @echo ' freefall - laptop accelerometer program for disk protection' @echo '' @echo 'You can do:' @echo ' $$ make -C tools/ _install' @@ -62,6 +63,9 @@ turbostat x86_energy_perf_policy: FORCE tmon: FORCE $(call descend,thermal/$@) +freefall: FORCE + $(call descend,laptop/$@) + acpi_install: $(call descend,power/$(@:_install=),install) @@ -80,10 +84,13 @@ turbostat_install x86_energy_perf_policy_install: tmon_install: $(call descend,thermal/$(@:_install=),install) +freefall_install: + $(call descend,laptop/$(@:_install=),install) + install: acpi_install cgroup_install cpupower_install hv_install firewire_install lguest_install \ perf_install selftests_install turbostat_install usb_install \ virtio_install vm_install net_install x86_energy_perf_policy_install \ - tmon + tmon freefall_install acpi_clean: $(call descend,power/acpi,clean) @@ -112,8 +119,11 @@ turbostat_clean x86_energy_perf_policy_clean: tmon_clean: $(call descend,thermal/tmon,clean) +freefall_clean: + $(call descend,laptop/freefall,clean) + clean: acpi_clean cgroup_clean cpupower_clean hv_clean firewire_clean lguest_clean \ perf_clean selftests_clean turbostat_clean usb_clean virtio_clean \ - vm_clean net_clean x86_energy_perf_policy_clean tmon_clean + vm_clean net_clean x86_energy_perf_policy_clean tmon_clean freefall_clean .PHONY: FORCE diff --git a/tools/laptop/freefall/Makefile b/tools/laptop/freefall/Makefile new file mode 100644 index 000000000000..48c6c9328419 --- /dev/null +++ b/tools/laptop/freefall/Makefile @@ -0,0 +1,17 @@ +PREFIX ?= /usr +SBINDIR ?= sbin +INSTALL ?= install +CC = $(CROSS_COMPILE)gcc + +TARGET = freefall + +all: $(TARGET) + +%: %.c + $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< + +clean: + $(RM) $(TARGET) + +install: freefall + $(INSTALL) -D -m 755 $(TARGET) $(DESTDIR)$(PREFIX)/$(SBINDIR)/$(TARGET) diff --git a/tools/laptop/freefall/freefall.c b/tools/laptop/freefall/freefall.c new file mode 100644 index 000000000000..5e44b20b1848 --- /dev/null +++ b/tools/laptop/freefall/freefall.c @@ -0,0 +1,174 @@ +/* Disk protection for HP/DELL machines. + * + * Copyright 2008 Eric Piel + * Copyright 2009 Pavel Machek + * Copyright 2012 Sonal Santan + * Copyright 2014 Pali Rohár + * + * GPLv2. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static int noled; +static char unload_heads_path[64]; +static char device_path[32]; +static const char app_name[] = "FREE FALL"; + +static int set_unload_heads_path(char *device) +{ + if (strlen(device) <= 5 || strncmp(device, "/dev/", 5) != 0) + return -EINVAL; + strncpy(device_path, device, sizeof(device_path) - 1); + + snprintf(unload_heads_path, sizeof(unload_heads_path) - 1, + "/sys/block/%s/device/unload_heads", device+5); + return 0; +} + +static int valid_disk(void) +{ + int fd = open(unload_heads_path, O_RDONLY); + + if (fd < 0) { + perror(unload_heads_path); + return 0; + } + + close(fd); + return 1; +} + +static void write_int(char *path, int i) +{ + char buf[1024]; + int fd = open(path, O_RDWR); + + if (fd < 0) { + perror("open"); + exit(1); + } + + sprintf(buf, "%d", i); + + if (write(fd, buf, strlen(buf)) != strlen(buf)) { + perror("write"); + exit(1); + } + + close(fd); +} + +static void set_led(int on) +{ + if (noled) + return; + write_int("/sys/class/leds/hp::hddprotect/brightness", on); +} + +static void protect(int seconds) +{ + const char *str = (seconds == 0) ? "Unparked" : "Parked"; + + write_int(unload_heads_path, seconds*1000); + syslog(LOG_INFO, "%s %s disk head\n", str, device_path); +} + +static int on_ac(void) +{ + /* /sys/class/power_supply/AC0/online */ + return 1; +} + +static int lid_open(void) +{ + /* /proc/acpi/button/lid/LID/state */ + return 1; +} + +static void ignore_me(int signum) +{ + protect(0); + set_led(0); +} + +int main(int argc, char **argv) +{ + int fd, ret; + struct stat st; + struct sched_param param; + + if (argc == 1) + ret = set_unload_heads_path("/dev/sda"); + else if (argc == 2) + ret = set_unload_heads_path(argv[1]); + else + ret = -EINVAL; + + if (ret || !valid_disk()) { + fprintf(stderr, "usage: %s (default: /dev/sda)\n", + argv[0]); + exit(1); + } + + fd = open("/dev/freefall", O_RDONLY); + if (fd < 0) { + perror("/dev/freefall"); + return EXIT_FAILURE; + } + + if (stat("/sys/class/leds/hp::hddprotect/brightness", &st)) + noled = 1; + + if (daemon(0, 0) != 0) { + perror("daemon"); + return EXIT_FAILURE; + } + + openlog(app_name, LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL1); + + param.sched_priority = sched_get_priority_max(SCHED_FIFO); + sched_setscheduler(0, SCHED_FIFO, ¶m); + mlockall(MCL_CURRENT|MCL_FUTURE); + + signal(SIGALRM, ignore_me); + + for (;;) { + unsigned char count; + + ret = read(fd, &count, sizeof(count)); + alarm(0); + if ((ret == -1) && (errno == EINTR)) { + /* Alarm expired, time to unpark the heads */ + continue; + } + + if (ret != sizeof(count)) { + perror("read"); + break; + } + + protect(21); + set_led(1); + if (1 || on_ac() || lid_open()) + alarm(2); + else + alarm(20); + } + + closelog(); + close(fd); + return EXIT_SUCCESS; +} -- cgit