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-rw-r--r--include/linux/coredump.h1
-rw-r--r--include/linux/debugfs.h19
-rw-r--r--include/linux/eventfd.h2
-rw-r--r--include/linux/fs.h12
-rw-r--r--include/linux/init.h3
-rw-r--r--include/linux/io-mapping.h4
-rw-r--r--include/linux/kcov.h2
-rw-r--r--include/linux/kexec.h7
-rw-r--r--include/linux/minmax.h26
-rw-r--r--include/linux/regset.h15
10 files changed, 68 insertions, 23 deletions
diff --git a/include/linux/coredump.h b/include/linux/coredump.h
index 08a1d3e7e46d..191dcf5af6cb 100644
--- a/include/linux/coredump.h
+++ b/include/linux/coredump.h
@@ -22,6 +22,7 @@ struct coredump_params {
struct file *file;
unsigned long limit;
unsigned long mm_flags;
+ int cpu;
loff_t written;
loff_t pos;
loff_t to_skip;
diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index f60674692d36..ea2d919fd9c7 100644
--- a/include/linux/debugfs.h
+++ b/include/linux/debugfs.h
@@ -45,7 +45,7 @@ struct debugfs_u32_array {
extern struct dentry *arch_debugfs_dir;
-#define DEFINE_DEBUGFS_ATTRIBUTE(__fops, __get, __set, __fmt) \
+#define DEFINE_DEBUGFS_ATTRIBUTE_XSIGNED(__fops, __get, __set, __fmt, __is_signed) \
static int __fops ## _open(struct inode *inode, struct file *file) \
{ \
__simple_attr_check_format(__fmt, 0ull); \
@@ -56,10 +56,16 @@ static const struct file_operations __fops = { \
.open = __fops ## _open, \
.release = simple_attr_release, \
.read = debugfs_attr_read, \
- .write = debugfs_attr_write, \
+ .write = (__is_signed) ? debugfs_attr_write_signed : debugfs_attr_write, \
.llseek = no_llseek, \
}
+#define DEFINE_DEBUGFS_ATTRIBUTE(__fops, __get, __set, __fmt) \
+ DEFINE_DEBUGFS_ATTRIBUTE_XSIGNED(__fops, __get, __set, __fmt, false)
+
+#define DEFINE_DEBUGFS_ATTRIBUTE_SIGNED(__fops, __get, __set, __fmt) \
+ DEFINE_DEBUGFS_ATTRIBUTE_XSIGNED(__fops, __get, __set, __fmt, true)
+
typedef struct vfsmount *(*debugfs_automount_t)(struct dentry *, void *);
#if defined(CONFIG_DEBUG_FS)
@@ -102,6 +108,8 @@ ssize_t debugfs_attr_read(struct file *file, char __user *buf,
size_t len, loff_t *ppos);
ssize_t debugfs_attr_write(struct file *file, const char __user *buf,
size_t len, loff_t *ppos);
+ssize_t debugfs_attr_write_signed(struct file *file, const char __user *buf,
+ size_t len, loff_t *ppos);
struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,
struct dentry *new_dir, const char *new_name);
@@ -254,6 +262,13 @@ static inline ssize_t debugfs_attr_write(struct file *file,
return -ENODEV;
}
+static inline ssize_t debugfs_attr_write_signed(struct file *file,
+ const char __user *buf,
+ size_t len, loff_t *ppos)
+{
+ return -ENODEV;
+}
+
static inline struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,
struct dentry *new_dir, char *new_name)
{
diff --git a/include/linux/eventfd.h b/include/linux/eventfd.h
index 30eb30d6909b..3cd202d3eefb 100644
--- a/include/linux/eventfd.h
+++ b/include/linux/eventfd.h
@@ -61,7 +61,7 @@ static inline struct eventfd_ctx *eventfd_ctx_fdget(int fd)
return ERR_PTR(-ENOSYS);
}
-static inline int eventfd_signal(struct eventfd_ctx *ctx, int n)
+static inline int eventfd_signal(struct eventfd_ctx *ctx, __u64 n)
{
return -ENOSYS;
}
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 71b5c24b55ce..6dd5f1d61fcf 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -3513,7 +3513,7 @@ void simple_transaction_set(struct file *file, size_t n);
* All attributes contain a text representation of a numeric value
* that are accessed with the get() and set() functions.
*/
-#define DEFINE_SIMPLE_ATTRIBUTE(__fops, __get, __set, __fmt) \
+#define DEFINE_SIMPLE_ATTRIBUTE_XSIGNED(__fops, __get, __set, __fmt, __is_signed) \
static int __fops ## _open(struct inode *inode, struct file *file) \
{ \
__simple_attr_check_format(__fmt, 0ull); \
@@ -3524,10 +3524,16 @@ static const struct file_operations __fops = { \
.open = __fops ## _open, \
.release = simple_attr_release, \
.read = simple_attr_read, \
- .write = simple_attr_write, \
+ .write = (__is_signed) ? simple_attr_write_signed : simple_attr_write, \
.llseek = generic_file_llseek, \
}
+#define DEFINE_SIMPLE_ATTRIBUTE(__fops, __get, __set, __fmt) \
+ DEFINE_SIMPLE_ATTRIBUTE_XSIGNED(__fops, __get, __set, __fmt, false)
+
+#define DEFINE_SIMPLE_ATTRIBUTE_SIGNED(__fops, __get, __set, __fmt) \
+ DEFINE_SIMPLE_ATTRIBUTE_XSIGNED(__fops, __get, __set, __fmt, true)
+
static inline __printf(1, 2)
void __simple_attr_check_format(const char *fmt, ...)
{
@@ -3542,6 +3548,8 @@ ssize_t simple_attr_read(struct file *file, char __user *buf,
size_t len, loff_t *ppos);
ssize_t simple_attr_write(struct file *file, const char __user *buf,
size_t len, loff_t *ppos);
+ssize_t simple_attr_write_signed(struct file *file, const char __user *buf,
+ size_t len, loff_t *ppos);
struct ctl_table;
int __init list_bdev_fs_names(char *buf, size_t size);
diff --git a/include/linux/init.h b/include/linux/init.h
index 077d7f93b402..c5fe6d26f5b1 100644
--- a/include/linux/init.h
+++ b/include/linux/init.h
@@ -2,7 +2,9 @@
#ifndef _LINUX_INIT_H
#define _LINUX_INIT_H
+#include <linux/build_bug.h>
#include <linux/compiler.h>
+#include <linux/stringify.h>
#include <linux/types.h>
/* Built-in __init functions needn't be compiled with retpoline */
@@ -143,6 +145,7 @@ struct file_system_type;
extern int do_one_initcall(initcall_t fn);
extern char __initdata boot_command_line[];
extern char *saved_command_line;
+extern unsigned int saved_command_line_len;
extern unsigned int reset_devices;
/* used by init/main.c */
diff --git a/include/linux/io-mapping.h b/include/linux/io-mapping.h
index 66a774d2710e..09d4f17c8d3b 100644
--- a/include/linux/io-mapping.h
+++ b/include/linux/io-mapping.h
@@ -213,7 +213,7 @@ io_mapping_free(struct io_mapping *iomap)
kfree(iomap);
}
-#endif /* _LINUX_IO_MAPPING_H */
-
int io_mapping_map_user(struct io_mapping *iomap, struct vm_area_struct *vma,
unsigned long addr, unsigned long pfn, unsigned long size);
+
+#endif /* _LINUX_IO_MAPPING_H */
diff --git a/include/linux/kcov.h b/include/linux/kcov.h
index 55dc338f6bcd..ee04256f28af 100644
--- a/include/linux/kcov.h
+++ b/include/linux/kcov.h
@@ -56,7 +56,7 @@ static inline void kcov_remote_start_usb(u64 id)
/*
* The softirq flavor of kcov_remote_*() functions is introduced as a temporary
* work around for kcov's lack of nested remote coverage sections support in
- * task context. Adding suport for nested sections is tracked in:
+ * task context. Adding support for nested sections is tracked in:
* https://bugzilla.kernel.org/show_bug.cgi?id=210337
*/
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index 41a686996aaa..5dd4343c1bbe 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -17,6 +17,7 @@
#include <linux/crash_core.h>
#include <asm/io.h>
+#include <linux/range.h>
#include <uapi/linux/kexec.h>
#include <linux/verification.h>
@@ -240,14 +241,10 @@ static inline int arch_kexec_locate_mem_hole(struct kexec_buf *kbuf)
/* Alignment required for elf header segment */
#define ELF_CORE_HEADER_ALIGN 4096
-struct crash_mem_range {
- u64 start, end;
-};
-
struct crash_mem {
unsigned int max_nr_ranges;
unsigned int nr_ranges;
- struct crash_mem_range ranges[];
+ struct range ranges[];
};
extern int crash_exclude_mem_range(struct crash_mem *mem,
diff --git a/include/linux/minmax.h b/include/linux/minmax.h
index 5433c08fcc68..396df1121bff 100644
--- a/include/linux/minmax.h
+++ b/include/linux/minmax.h
@@ -37,6 +37,28 @@
__cmp(x, y, op), \
__cmp_once(x, y, __UNIQUE_ID(__x), __UNIQUE_ID(__y), op))
+#define __clamp(val, lo, hi) \
+ ((val) >= (hi) ? (hi) : ((val) <= (lo) ? (lo) : (val)))
+
+#define __clamp_once(val, lo, hi, unique_val, unique_lo, unique_hi) ({ \
+ typeof(val) unique_val = (val); \
+ typeof(lo) unique_lo = (lo); \
+ typeof(hi) unique_hi = (hi); \
+ __clamp(unique_val, unique_lo, unique_hi); })
+
+#define __clamp_input_check(lo, hi) \
+ (BUILD_BUG_ON_ZERO(__builtin_choose_expr( \
+ __is_constexpr((lo) > (hi)), (lo) > (hi), false)))
+
+#define __careful_clamp(val, lo, hi) ({ \
+ __clamp_input_check(lo, hi) + \
+ __builtin_choose_expr(__typecheck(val, lo) && __typecheck(val, hi) && \
+ __typecheck(hi, lo) && __is_constexpr(val) && \
+ __is_constexpr(lo) && __is_constexpr(hi), \
+ __clamp(val, lo, hi), \
+ __clamp_once(val, lo, hi, __UNIQUE_ID(__val), \
+ __UNIQUE_ID(__lo), __UNIQUE_ID(__hi))); })
+
/**
* min - return minimum of two values of the same or compatible types
* @x: first value
@@ -86,7 +108,7 @@
* This macro does strict typechecking of @lo/@hi to make sure they are of the
* same type as @val. See the unnecessary pointer comparisons.
*/
-#define clamp(val, lo, hi) min((typeof(val))max(val, lo), hi)
+#define clamp(val, lo, hi) __careful_clamp(val, lo, hi)
/*
* ..and if you can't take the strict
@@ -121,7 +143,7 @@
* This macro does no typechecking and uses temporary variables of type
* @type to make all the comparisons.
*/
-#define clamp_t(type, val, lo, hi) min_t(type, max_t(type, val, lo), hi)
+#define clamp_t(type, val, lo, hi) __careful_clamp((type)(val), (type)(lo), (type)(hi))
/**
* clamp_val - return a value clamped to a given range using val's type
diff --git a/include/linux/regset.h b/include/linux/regset.h
index a00765f0e8cf..9061266dd8de 100644
--- a/include/linux/regset.h
+++ b/include/linux/regset.h
@@ -275,15 +275,15 @@ static inline int user_regset_copyin(unsigned int *pos, unsigned int *count,
return 0;
}
-static inline int user_regset_copyin_ignore(unsigned int *pos,
- unsigned int *count,
- const void **kbuf,
- const void __user **ubuf,
- const int start_pos,
- const int end_pos)
+static inline void user_regset_copyin_ignore(unsigned int *pos,
+ unsigned int *count,
+ const void **kbuf,
+ const void __user **ubuf,
+ const int start_pos,
+ const int end_pos)
{
if (*count == 0)
- return 0;
+ return;
BUG_ON(*pos < start_pos);
if (end_pos < 0 || *pos < end_pos) {
unsigned int copy = (end_pos < 0 ? *count
@@ -295,7 +295,6 @@ static inline int user_regset_copyin_ignore(unsigned int *pos,
*pos += copy;
*count -= copy;
}
- return 0;
}
extern int regset_get(struct task_struct *target,
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-25 10:59:54 +0300