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Diffstat (limited to 'lib')
-rw-r--r--lib/errseq.c37
-rw-r--r--lib/kobject.c4
-rw-r--r--lib/kobject_uevent.c3
-rw-r--r--lib/smp_processor_id.c3
-rw-r--r--lib/string.c2
-rw-r--r--lib/test_firmware.c17
-rw-r--r--lib/test_kmod.c14
-rw-r--r--lib/uuid.c34
-rw-r--r--lib/vsprintf.c92
9 files changed, 128 insertions, 78 deletions
diff --git a/lib/errseq.c b/lib/errseq.c
index 79cc66897db4..df782418b333 100644
--- a/lib/errseq.c
+++ b/lib/errseq.c
@@ -46,14 +46,14 @@
* @eseq: errseq_t field that should be set
* @err: error to set (must be between -1 and -MAX_ERRNO)
*
- * This function sets the error in *eseq, and increments the sequence counter
+ * This function sets the error in @eseq, and increments the sequence counter
* if the last sequence was sampled at some point in the past.
*
* Any error set will always overwrite an existing error.
*
- * We do return the latest value here, primarily for debugging purposes. The
- * return value should not be used as a previously sampled value in later calls
- * as it will not have the SEEN flag set.
+ * Return: The previous value, primarily for debugging purposes. The
+ * return value should not be used as a previously sampled value in later
+ * calls as it will not have the SEEN flag set.
*/
errseq_t errseq_set(errseq_t *eseq, int err)
{
@@ -108,11 +108,13 @@ errseq_t errseq_set(errseq_t *eseq, int err)
EXPORT_SYMBOL(errseq_set);
/**
- * errseq_sample - grab current errseq_t value
- * @eseq: pointer to errseq_t to be sampled
+ * errseq_sample() - Grab current errseq_t value.
+ * @eseq: Pointer to errseq_t to be sampled.
*
* This function allows callers to sample an errseq_t value, marking it as
* "seen" if required.
+ *
+ * Return: The current errseq value.
*/
errseq_t errseq_sample(errseq_t *eseq)
{
@@ -134,15 +136,15 @@ errseq_t errseq_sample(errseq_t *eseq)
EXPORT_SYMBOL(errseq_sample);
/**
- * errseq_check - has an error occurred since a particular sample point?
- * @eseq: pointer to errseq_t value to be checked
- * @since: previously-sampled errseq_t from which to check
+ * errseq_check() - Has an error occurred since a particular sample point?
+ * @eseq: Pointer to errseq_t value to be checked.
+ * @since: Previously-sampled errseq_t from which to check.
*
- * Grab the value that eseq points to, and see if it has changed "since"
- * the given value was sampled. The "since" value is not advanced, so there
+ * Grab the value that eseq points to, and see if it has changed @since
+ * the given value was sampled. The @since value is not advanced, so there
* is no need to mark the value as seen.
*
- * Returns the latest error set in the errseq_t or 0 if it hasn't changed.
+ * Return: The latest error set in the errseq_t or 0 if it hasn't changed.
*/
int errseq_check(errseq_t *eseq, errseq_t since)
{
@@ -155,11 +157,11 @@ int errseq_check(errseq_t *eseq, errseq_t since)
EXPORT_SYMBOL(errseq_check);
/**
- * errseq_check_and_advance - check an errseq_t and advance to current value
- * @eseq: pointer to value being checked and reported
- * @since: pointer to previously-sampled errseq_t to check against and advance
+ * errseq_check_and_advance() - Check an errseq_t and advance to current value.
+ * @eseq: Pointer to value being checked and reported.
+ * @since: Pointer to previously-sampled errseq_t to check against and advance.
*
- * Grab the eseq value, and see whether it matches the value that "since"
+ * Grab the eseq value, and see whether it matches the value that @since
* points to. If it does, then just return 0.
*
* If it doesn't, then the value has changed. Set the "seen" flag, and try to
@@ -170,6 +172,9 @@ EXPORT_SYMBOL(errseq_check);
* value. The caller must provide that if necessary. Because of this, callers
* may want to do a lockless errseq_check before taking the lock and calling
* this.
+ *
+ * Return: Negative errno if one has been stored, or 0 if no new error has
+ * occurred.
*/
int errseq_check_and_advance(errseq_t *eseq, errseq_t *since)
{
diff --git a/lib/kobject.c b/lib/kobject.c
index 06b849eee0ca..afd5a3fc6123 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* kobject.c - library routines for handling generic kernel objects
*
@@ -5,9 +6,6 @@
* Copyright (c) 2006-2007 Greg Kroah-Hartman <greg@kroah.com>
* Copyright (c) 2006-2007 Novell Inc.
*
- * This file is released under the GPLv2.
- *
- *
* Please see the file Documentation/kobject.txt for critical information
* about using the kobject interface.
*/
diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index 2615074d3de5..9fe6ec8fda28 100644
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* kernel userspace event delivery
*
@@ -5,8 +6,6 @@
* Copyright (C) 2004 Novell, Inc. All rights reserved.
* Copyright (C) 2004 IBM, Inc. All rights reserved.
*
- * Licensed under the GNU GPL v2.
- *
* Authors:
* Robert Love <rml@novell.com>
* Kay Sievers <kay.sievers@vrfy.org>
diff --git a/lib/smp_processor_id.c b/lib/smp_processor_id.c
index 835cc6df2776..85925aaa4fff 100644
--- a/lib/smp_processor_id.c
+++ b/lib/smp_processor_id.c
@@ -5,7 +5,6 @@
* DEBUG_PREEMPT variant of smp_processor_id().
*/
#include <linux/export.h>
-#include <linux/kallsyms.h>
#include <linux/sched.h>
notrace static unsigned int check_preemption_disabled(const char *what1,
@@ -43,7 +42,7 @@ notrace static unsigned int check_preemption_disabled(const char *what1,
printk(KERN_ERR "BUG: using %s%s() in preemptible [%08x] code: %s/%d\n",
what1, what2, preempt_count() - 1, current->comm, current->pid);
- print_symbol("caller is %s\n", (long)__builtin_return_address(0));
+ printk("caller is %pS\n", __builtin_return_address(0));
dump_stack();
out_enable:
diff --git a/lib/string.c b/lib/string.c
index 64a9e33f1daa..2c0900a5d51a 100644
--- a/lib/string.c
+++ b/lib/string.c
@@ -203,7 +203,7 @@ ssize_t strscpy(char *dest, const char *src, size_t count)
while (max >= sizeof(unsigned long)) {
unsigned long c, data;
- c = *(unsigned long *)(src+res);
+ c = read_word_at_a_time(src+res);
if (has_zero(c, &data, &constants)) {
data = prep_zero_mask(c, data, &constants);
data = create_zero_mask(data);
diff --git a/lib/test_firmware.c b/lib/test_firmware.c
index 64a4c76cba2b..078a61480573 100644
--- a/lib/test_firmware.c
+++ b/lib/test_firmware.c
@@ -96,7 +96,7 @@ struct test_config {
struct device *device);
};
-struct test_config *test_fw_config;
+static struct test_config *test_fw_config;
static ssize_t test_fw_misc_read(struct file *f, char __user *buf,
size_t size, loff_t *offset)
@@ -359,7 +359,7 @@ static ssize_t config_name_show(struct device *dev,
{
return config_test_show_str(buf, test_fw_config->name);
}
-static DEVICE_ATTR(config_name, 0644, config_name_show, config_name_store);
+static DEVICE_ATTR_RW(config_name);
static ssize_t config_num_requests_store(struct device *dev,
struct device_attribute *attr,
@@ -371,6 +371,7 @@ static ssize_t config_num_requests_store(struct device *dev,
if (test_fw_config->reqs) {
pr_err("Must call release_all_firmware prior to changing config\n");
rc = -EINVAL;
+ mutex_unlock(&test_fw_mutex);
goto out;
}
mutex_unlock(&test_fw_mutex);
@@ -388,8 +389,7 @@ static ssize_t config_num_requests_show(struct device *dev,
{
return test_dev_config_show_u8(buf, test_fw_config->num_requests);
}
-static DEVICE_ATTR(config_num_requests, 0644, config_num_requests_show,
- config_num_requests_store);
+static DEVICE_ATTR_RW(config_num_requests);
static ssize_t config_sync_direct_store(struct device *dev,
struct device_attribute *attr,
@@ -411,8 +411,7 @@ static ssize_t config_sync_direct_show(struct device *dev,
{
return test_dev_config_show_bool(buf, test_fw_config->sync_direct);
}
-static DEVICE_ATTR(config_sync_direct, 0644, config_sync_direct_show,
- config_sync_direct_store);
+static DEVICE_ATTR_RW(config_sync_direct);
static ssize_t config_send_uevent_store(struct device *dev,
struct device_attribute *attr,
@@ -428,8 +427,7 @@ static ssize_t config_send_uevent_show(struct device *dev,
{
return test_dev_config_show_bool(buf, test_fw_config->send_uevent);
}
-static DEVICE_ATTR(config_send_uevent, 0644, config_send_uevent_show,
- config_send_uevent_store);
+static DEVICE_ATTR_RW(config_send_uevent);
static ssize_t config_read_fw_idx_store(struct device *dev,
struct device_attribute *attr,
@@ -445,8 +443,7 @@ static ssize_t config_read_fw_idx_show(struct device *dev,
{
return test_dev_config_show_u8(buf, test_fw_config->read_fw_idx);
}
-static DEVICE_ATTR(config_read_fw_idx, 0644, config_read_fw_idx_show,
- config_read_fw_idx_store);
+static DEVICE_ATTR_RW(config_read_fw_idx);
static ssize_t trigger_request_store(struct device *dev,
diff --git a/lib/test_kmod.c b/lib/test_kmod.c
index 337f408b4de6..e372b97eee13 100644
--- a/lib/test_kmod.c
+++ b/lib/test_kmod.c
@@ -694,8 +694,7 @@ static ssize_t config_test_driver_show(struct device *dev,
return config_test_show_str(&test_dev->config_mutex, buf,
config->test_driver);
}
-static DEVICE_ATTR(config_test_driver, 0644, config_test_driver_show,
- config_test_driver_store);
+static DEVICE_ATTR_RW(config_test_driver);
static ssize_t config_test_fs_store(struct device *dev,
struct device_attribute *attr,
@@ -726,8 +725,7 @@ static ssize_t config_test_fs_show(struct device *dev,
return config_test_show_str(&test_dev->config_mutex, buf,
config->test_fs);
}
-static DEVICE_ATTR(config_test_fs, 0644, config_test_fs_show,
- config_test_fs_store);
+static DEVICE_ATTR_RW(config_test_fs);
static int trigger_config_run_type(struct kmod_test_device *test_dev,
enum kmod_test_case test_case,
@@ -1012,8 +1010,7 @@ static ssize_t config_num_threads_show(struct device *dev,
return test_dev_config_show_int(test_dev, buf, config->num_threads);
}
-static DEVICE_ATTR(config_num_threads, 0644, config_num_threads_show,
- config_num_threads_store);
+static DEVICE_ATTR_RW(config_num_threads);
static ssize_t config_test_case_store(struct device *dev,
struct device_attribute *attr,
@@ -1037,8 +1034,7 @@ static ssize_t config_test_case_show(struct device *dev,
return test_dev_config_show_uint(test_dev, buf, config->test_case);
}
-static DEVICE_ATTR(config_test_case, 0644, config_test_case_show,
- config_test_case_store);
+static DEVICE_ATTR_RW(config_test_case);
static ssize_t test_result_show(struct device *dev,
struct device_attribute *attr,
@@ -1049,7 +1045,7 @@ static ssize_t test_result_show(struct device *dev,
return test_dev_config_show_int(test_dev, buf, config->test_result);
}
-static DEVICE_ATTR(test_result, 0644, test_result_show, test_result_store);
+static DEVICE_ATTR_RW(test_result);
#define TEST_KMOD_DEV_ATTR(name) &dev_attr_##name.attr
diff --git a/lib/uuid.c b/lib/uuid.c
index 680b9fb9ba09..2290b9f001a9 100644
--- a/lib/uuid.c
+++ b/lib/uuid.c
@@ -29,15 +29,14 @@ EXPORT_SYMBOL(uuid_null);
const u8 guid_index[16] = {3,2,1,0,5,4,7,6,8,9,10,11,12,13,14,15};
const u8 uuid_index[16] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
-/***************************************************************
+/**
+ * generate_random_uuid - generate a random UUID
+ * @uuid: where to put the generated UUID
+ *
* Random UUID interface
*
- * Used here for a Boot ID, but can be useful for other kernel
- * drivers.
- ***************************************************************/
-
-/*
- * Generate random UUID
+ * Used to create a Boot ID or a filesystem UUID/GUID, but can be
+ * useful for other kernel drivers.
*/
void generate_random_uuid(unsigned char uuid[16])
{
@@ -73,16 +72,17 @@ void uuid_gen(uuid_t *bu)
EXPORT_SYMBOL_GPL(uuid_gen);
/**
- * uuid_is_valid - checks if UUID string valid
- * @uuid: UUID string to check
- *
- * Description:
- * It checks if the UUID string is following the format:
- * xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
- * where x is a hex digit.
- *
- * Return: true if input is valid UUID string.
- */
+ * uuid_is_valid - checks if a UUID string is valid
+ * @uuid: UUID string to check
+ *
+ * Description:
+ * It checks if the UUID string is following the format:
+ * xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+ *
+ * where x is a hex digit.
+ *
+ * Return: true if input is valid UUID string.
+ */
bool uuid_is_valid(const char *uuid)
{
unsigned int i;
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 01c3957b2de6..77ee6ced11b1 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -42,7 +42,6 @@
#include "../mm/internal.h" /* For the trace_print_flags arrays */
#include <asm/page.h> /* for PAGE_SIZE */
-#include <asm/sections.h> /* for dereference_function_descriptor() */
#include <asm/byteorder.h> /* cpu_to_le16 */
#include <linux/string_helpers.h>
@@ -1834,7 +1833,8 @@ static char *ptr_to_id(char *buf, char *end, void *ptr, struct printf_spec spec)
*
* - 'x' For printing the address. Equivalent to "%lx".
*
- * ** Please update also Documentation/printk-formats.txt when making changes **
+ * ** When making changes please also update:
+ * Documentation/core-api/printk-formats.rst
*
* Note: The difference between 'S' and 'F' is that on ia64 and ppc64
* function pointers are really function descriptors, which contain a
@@ -1862,10 +1862,10 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr,
switch (*fmt) {
case 'F':
case 'f':
- ptr = dereference_function_descriptor(ptr);
- /* Fallthrough */
case 'S':
case 's':
+ ptr = dereference_symbol_descriptor(ptr);
+ /* Fallthrough */
case 'B':
return symbol_string(buf, end, ptr, spec, fmt);
case 'R':
@@ -2194,7 +2194,7 @@ set_precision(struct printf_spec *spec, int prec)
* - ``%n`` is unsupported
* - ``%p*`` is handled by pointer()
*
- * See pointer() or Documentation/printk-formats.txt for more
+ * See pointer() or Documentation/core-api/printk-formats.rst for more
* extensive description.
*
* **Please update the documentation in both places when making changes**
@@ -2516,29 +2516,34 @@ int vbin_printf(u32 *bin_buf, size_t size, const char *fmt, va_list args)
{
struct printf_spec spec = {0};
char *str, *end;
+ int width;
str = (char *)bin_buf;
end = (char *)(bin_buf + size);
#define save_arg(type) \
-do { \
+({ \
+ unsigned long long value; \
if (sizeof(type) == 8) { \
- unsigned long long value; \
+ unsigned long long val8; \
str = PTR_ALIGN(str, sizeof(u32)); \
- value = va_arg(args, unsigned long long); \
+ val8 = va_arg(args, unsigned long long); \
if (str + sizeof(type) <= end) { \
- *(u32 *)str = *(u32 *)&value; \
- *(u32 *)(str + 4) = *((u32 *)&value + 1); \
+ *(u32 *)str = *(u32 *)&val8; \
+ *(u32 *)(str + 4) = *((u32 *)&val8 + 1); \
} \
+ value = val8; \
} else { \
- unsigned long value; \
+ unsigned int val4; \
str = PTR_ALIGN(str, sizeof(type)); \
- value = va_arg(args, int); \
+ val4 = va_arg(args, int); \
if (str + sizeof(type) <= end) \
- *(typeof(type) *)str = (type)value; \
+ *(typeof(type) *)str = (type)(long)val4; \
+ value = (unsigned long long)val4; \
} \
str += sizeof(type); \
-} while (0)
+ value; \
+})
while (*fmt) {
int read = format_decode(fmt, &spec);
@@ -2554,7 +2559,10 @@ do { \
case FORMAT_TYPE_WIDTH:
case FORMAT_TYPE_PRECISION:
- save_arg(int);
+ width = (int)save_arg(int);
+ /* Pointers may require the width */
+ if (*fmt == 'p')
+ set_field_width(&spec, width);
break;
case FORMAT_TYPE_CHAR:
@@ -2576,7 +2584,27 @@ do { \
}
case FORMAT_TYPE_PTR:
- save_arg(void *);
+ /* Dereferenced pointers must be done now */
+ switch (*fmt) {
+ /* Dereference of functions is still OK */
+ case 'S':
+ case 's':
+ case 'F':
+ case 'f':
+ save_arg(void *);
+ break;
+ default:
+ if (!isalnum(*fmt)) {
+ save_arg(void *);
+ break;
+ }
+ str = pointer(fmt, str, end, va_arg(args, void *),
+ spec);
+ if (str + 1 < end)
+ *str++ = '\0';
+ else
+ end[-1] = '\0'; /* Must be nul terminated */
+ }
/* skip all alphanumeric pointer suffixes */
while (isalnum(*fmt))
fmt++;
@@ -2728,11 +2756,39 @@ int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf)
break;
}
- case FORMAT_TYPE_PTR:
- str = pointer(fmt, str, end, get_arg(void *), spec);
+ case FORMAT_TYPE_PTR: {
+ bool process = false;
+ int copy, len;
+ /* Non function dereferences were already done */
+ switch (*fmt) {
+ case 'S':
+ case 's':
+ case 'F':
+ case 'f':
+ process = true;
+ break;
+ default:
+ if (!isalnum(*fmt)) {
+ process = true;
+ break;
+ }
+ /* Pointer dereference was already processed */
+ if (str < end) {
+ len = copy = strlen(args);
+ if (copy > end - str)
+ copy = end - str;
+ memcpy(str, args, copy);
+ str += len;
+ args += len;
+ }
+ }
+ if (process)
+ str = pointer(fmt, str, end, get_arg(void *), spec);
+
while (isalnum(*fmt))
fmt++;
break;
+ }
case FORMAT_TYPE_PERCENT_CHAR:
if (str < end)
generated by cgit (git 2.34.1) at 2024-06-18 17:43:24 +0000