mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
311 lines
9.2 KiB
311 lines
9.2 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
|
#ifndef _LINUX_STRING_H_ |
|
#define _LINUX_STRING_H_ |
|
|
|
|
|
#include <linux/compiler.h> /* for inline */ |
|
#include <linux/types.h> /* for size_t */ |
|
#include <linux/stddef.h> /* for NULL */ |
|
#include <linux/errno.h> /* for E2BIG */ |
|
#include <stdarg.h> |
|
#include <uapi/linux/string.h> |
|
|
|
extern char *strndup_user(const char __user *, long); |
|
extern void *memdup_user(const void __user *, size_t); |
|
extern void *vmemdup_user(const void __user *, size_t); |
|
extern void *memdup_user_nul(const void __user *, size_t); |
|
|
|
/* |
|
* Include machine specific inline routines |
|
*/ |
|
#include <asm/string.h> |
|
|
|
#ifndef __HAVE_ARCH_STRCPY |
|
extern char * strcpy(char *,const char *); |
|
#endif |
|
#ifndef __HAVE_ARCH_STRNCPY |
|
extern char * strncpy(char *,const char *, __kernel_size_t); |
|
#endif |
|
#ifndef __HAVE_ARCH_STRLCPY |
|
size_t strlcpy(char *, const char *, size_t); |
|
#endif |
|
#ifndef __HAVE_ARCH_STRSCPY |
|
ssize_t strscpy(char *, const char *, size_t); |
|
#endif |
|
|
|
/* Wraps calls to strscpy()/memset(), no arch specific code required */ |
|
ssize_t strscpy_pad(char *dest, const char *src, size_t count); |
|
|
|
#ifndef __HAVE_ARCH_STRCAT |
|
extern char * strcat(char *, const char *); |
|
#endif |
|
#ifndef __HAVE_ARCH_STRNCAT |
|
extern char * strncat(char *, const char *, __kernel_size_t); |
|
#endif |
|
#ifndef __HAVE_ARCH_STRLCAT |
|
extern size_t strlcat(char *, const char *, __kernel_size_t); |
|
#endif |
|
#ifndef __HAVE_ARCH_STRCMP |
|
extern int strcmp(const char *,const char *); |
|
#endif |
|
#ifndef __HAVE_ARCH_STRNCMP |
|
extern int strncmp(const char *,const char *,__kernel_size_t); |
|
#endif |
|
#ifndef __HAVE_ARCH_STRCASECMP |
|
extern int strcasecmp(const char *s1, const char *s2); |
|
#endif |
|
#ifndef __HAVE_ARCH_STRNCASECMP |
|
extern int strncasecmp(const char *s1, const char *s2, size_t n); |
|
#endif |
|
#ifndef __HAVE_ARCH_STRCHR |
|
extern char * strchr(const char *,int); |
|
#endif |
|
#ifndef __HAVE_ARCH_STRCHRNUL |
|
extern char * strchrnul(const char *,int); |
|
#endif |
|
extern char * strnchrnul(const char *, size_t, int); |
|
#ifndef __HAVE_ARCH_STRNCHR |
|
extern char * strnchr(const char *, size_t, int); |
|
#endif |
|
#ifndef __HAVE_ARCH_STRRCHR |
|
extern char * strrchr(const char *,int); |
|
#endif |
|
extern char * __must_check skip_spaces(const char *); |
|
|
|
extern char *strim(char *); |
|
|
|
static inline __must_check char *strstrip(char *str) |
|
{ |
|
return strim(str); |
|
} |
|
|
|
#ifndef __HAVE_ARCH_STRSTR |
|
extern char * strstr(const char *, const char *); |
|
#endif |
|
#ifndef __HAVE_ARCH_STRNSTR |
|
extern char * strnstr(const char *, const char *, size_t); |
|
#endif |
|
#ifndef __HAVE_ARCH_STRLEN |
|
extern __kernel_size_t strlen(const char *); |
|
#endif |
|
#ifndef __HAVE_ARCH_STRNLEN |
|
extern __kernel_size_t strnlen(const char *,__kernel_size_t); |
|
#endif |
|
#ifndef __HAVE_ARCH_STRPBRK |
|
extern char * strpbrk(const char *,const char *); |
|
#endif |
|
#ifndef __HAVE_ARCH_STRSEP |
|
extern char * strsep(char **,const char *); |
|
#endif |
|
#ifndef __HAVE_ARCH_STRSPN |
|
extern __kernel_size_t strspn(const char *,const char *); |
|
#endif |
|
#ifndef __HAVE_ARCH_STRCSPN |
|
extern __kernel_size_t strcspn(const char *,const char *); |
|
#endif |
|
|
|
#ifndef __HAVE_ARCH_MEMSET |
|
extern void * memset(void *,int,__kernel_size_t); |
|
#endif |
|
|
|
#ifndef __HAVE_ARCH_MEMSET16 |
|
extern void *memset16(uint16_t *, uint16_t, __kernel_size_t); |
|
#endif |
|
|
|
#ifndef __HAVE_ARCH_MEMSET32 |
|
extern void *memset32(uint32_t *, uint32_t, __kernel_size_t); |
|
#endif |
|
|
|
#ifndef __HAVE_ARCH_MEMSET64 |
|
extern void *memset64(uint64_t *, uint64_t, __kernel_size_t); |
|
#endif |
|
|
|
static inline void *memset_l(unsigned long *p, unsigned long v, |
|
__kernel_size_t n) |
|
{ |
|
if (BITS_PER_LONG == 32) |
|
return memset32((uint32_t *)p, v, n); |
|
else |
|
return memset64((uint64_t *)p, v, n); |
|
} |
|
|
|
static inline void *memset_p(void **p, void *v, __kernel_size_t n) |
|
{ |
|
if (BITS_PER_LONG == 32) |
|
return memset32((uint32_t *)p, (uintptr_t)v, n); |
|
else |
|
return memset64((uint64_t *)p, (uintptr_t)v, n); |
|
} |
|
|
|
extern void **__memcat_p(void **a, void **b); |
|
#define memcat_p(a, b) ({ \ |
|
BUILD_BUG_ON_MSG(!__same_type(*(a), *(b)), \ |
|
"type mismatch in memcat_p()"); \ |
|
(typeof(*a) *)__memcat_p((void **)(a), (void **)(b)); \ |
|
}) |
|
|
|
#ifndef __HAVE_ARCH_MEMCPY |
|
extern void * memcpy(void *,const void *,__kernel_size_t); |
|
#endif |
|
#ifndef __HAVE_ARCH_MEMMOVE |
|
extern void * memmove(void *,const void *,__kernel_size_t); |
|
#endif |
|
#ifndef __HAVE_ARCH_MEMSCAN |
|
extern void * memscan(void *,int,__kernel_size_t); |
|
#endif |
|
#ifndef __HAVE_ARCH_MEMCMP |
|
extern int memcmp(const void *,const void *,__kernel_size_t); |
|
#endif |
|
#ifndef __HAVE_ARCH_BCMP |
|
extern int bcmp(const void *,const void *,__kernel_size_t); |
|
#endif |
|
#ifndef __HAVE_ARCH_MEMCHR |
|
extern void * memchr(const void *,int,__kernel_size_t); |
|
#endif |
|
#ifndef __HAVE_ARCH_MEMCPY_FLUSHCACHE |
|
static inline void memcpy_flushcache(void *dst, const void *src, size_t cnt) |
|
{ |
|
memcpy(dst, src, cnt); |
|
} |
|
#endif |
|
|
|
void *memchr_inv(const void *s, int c, size_t n); |
|
char *strreplace(char *s, char old, char new); |
|
|
|
extern void kfree_const(const void *x); |
|
|
|
extern char *kstrdup(const char *s, gfp_t gfp) __malloc; |
|
extern const char *kstrdup_const(const char *s, gfp_t gfp); |
|
extern char *kstrndup(const char *s, size_t len, gfp_t gfp); |
|
extern void *kmemdup(const void *src, size_t len, gfp_t gfp); |
|
extern char *kmemdup_nul(const char *s, size_t len, gfp_t gfp); |
|
|
|
extern char **argv_split(gfp_t gfp, const char *str, int *argcp); |
|
extern void argv_free(char **argv); |
|
|
|
extern bool sysfs_streq(const char *s1, const char *s2); |
|
extern int kstrtobool(const char *s, bool *res); |
|
static inline int strtobool(const char *s, bool *res) |
|
{ |
|
return kstrtobool(s, res); |
|
} |
|
|
|
int match_string(const char * const *array, size_t n, const char *string); |
|
int __sysfs_match_string(const char * const *array, size_t n, const char *s); |
|
|
|
/** |
|
* sysfs_match_string - matches given string in an array |
|
* @_a: array of strings |
|
* @_s: string to match with |
|
* |
|
* Helper for __sysfs_match_string(). Calculates the size of @a automatically. |
|
*/ |
|
#define sysfs_match_string(_a, _s) __sysfs_match_string(_a, ARRAY_SIZE(_a), _s) |
|
|
|
#ifdef CONFIG_BINARY_PRINTF |
|
int vbin_printf(u32 *bin_buf, size_t size, const char *fmt, va_list args); |
|
int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf); |
|
int bprintf(u32 *bin_buf, size_t size, const char *fmt, ...) __printf(3, 4); |
|
#endif |
|
|
|
extern ssize_t memory_read_from_buffer(void *to, size_t count, loff_t *ppos, |
|
const void *from, size_t available); |
|
|
|
int ptr_to_hashval(const void *ptr, unsigned long *hashval_out); |
|
|
|
/** |
|
* strstarts - does @str start with @prefix? |
|
* @str: string to examine |
|
* @prefix: prefix to look for. |
|
*/ |
|
static inline bool strstarts(const char *str, const char *prefix) |
|
{ |
|
return strncmp(str, prefix, strlen(prefix)) == 0; |
|
} |
|
|
|
size_t memweight(const void *ptr, size_t bytes); |
|
|
|
/** |
|
* memzero_explicit - Fill a region of memory (e.g. sensitive |
|
* keying data) with 0s. |
|
* @s: Pointer to the start of the area. |
|
* @count: The size of the area. |
|
* |
|
* Note: usually using memset() is just fine (!), but in cases |
|
* where clearing out _local_ data at the end of a scope is |
|
* necessary, memzero_explicit() should be used instead in |
|
* order to prevent the compiler from optimising away zeroing. |
|
* |
|
* memzero_explicit() doesn't need an arch-specific version as |
|
* it just invokes the one of memset() implicitly. |
|
*/ |
|
static inline void memzero_explicit(void *s, size_t count) |
|
{ |
|
memset(s, 0, count); |
|
barrier_data(s); |
|
} |
|
|
|
/** |
|
* kbasename - return the last part of a pathname. |
|
* |
|
* @path: path to extract the filename from. |
|
*/ |
|
static inline const char *kbasename(const char *path) |
|
{ |
|
const char *tail = strrchr(path, '/'); |
|
return tail ? tail + 1 : path; |
|
} |
|
|
|
#define __FORTIFY_INLINE extern __always_inline __attribute__((gnu_inline)) |
|
#define __RENAME(x) __asm__(#x) |
|
|
|
void fortify_panic(const char *name) __noreturn __cold; |
|
void __read_overflow(void) __compiletime_error("detected read beyond size of object passed as 1st parameter"); |
|
void __read_overflow2(void) __compiletime_error("detected read beyond size of object passed as 2nd parameter"); |
|
void __read_overflow3(void) __compiletime_error("detected read beyond size of object passed as 3rd parameter"); |
|
void __write_overflow(void) __compiletime_error("detected write beyond size of object passed as 1st parameter"); |
|
|
|
#if !defined(__NO_FORTIFY) && defined(__OPTIMIZE__) && defined(CONFIG_FORTIFY_SOURCE) |
|
#include <linux/fortify-string.h> |
|
#endif |
|
|
|
/** |
|
* memcpy_and_pad - Copy one buffer to another with padding |
|
* @dest: Where to copy to |
|
* @dest_len: The destination buffer size |
|
* @src: Where to copy from |
|
* @count: The number of bytes to copy |
|
* @pad: Character to use for padding if space is left in destination. |
|
*/ |
|
static inline void memcpy_and_pad(void *dest, size_t dest_len, |
|
const void *src, size_t count, int pad) |
|
{ |
|
if (dest_len > count) { |
|
memcpy(dest, src, count); |
|
memset(dest + count, pad, dest_len - count); |
|
} else |
|
memcpy(dest, src, dest_len); |
|
} |
|
|
|
/** |
|
* str_has_prefix - Test if a string has a given prefix |
|
* @str: The string to test |
|
* @prefix: The string to see if @str starts with |
|
* |
|
* A common way to test a prefix of a string is to do: |
|
* strncmp(str, prefix, sizeof(prefix) - 1) |
|
* |
|
* But this can lead to bugs due to typos, or if prefix is a pointer |
|
* and not a constant. Instead use str_has_prefix(). |
|
* |
|
* Returns: |
|
* * strlen(@prefix) if @str starts with @prefix |
|
* * 0 if @str does not start with @prefix |
|
*/ |
|
static __always_inline size_t str_has_prefix(const char *str, const char *prefix) |
|
{ |
|
size_t len = strlen(prefix); |
|
return strncmp(str, prefix, len) == 0 ? len : 0; |
|
} |
|
|
|
#endif /* _LINUX_STRING_H_ */
|
|
|