0a1b71b400
strstrip() can return a modified value of its input argument, when removing elading whitesapce. So it is surely bug for this function's return value to be ignored. The caller is probably going to use the incorrect original pointer. So mark it __must_check to prevent this frm happening (as it has before). Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
136 lines
3.8 KiB
C
136 lines
3.8 KiB
C
#ifndef _LINUX_STRING_H_
|
|
#define _LINUX_STRING_H_
|
|
|
|
/* We don't want strings.h stuff being used by user stuff by accident */
|
|
|
|
#ifndef __KERNEL__
|
|
#include <string.h>
|
|
#else
|
|
|
|
#include <linux/compiler.h> /* for inline */
|
|
#include <linux/types.h> /* for size_t */
|
|
#include <linux/stddef.h> /* for NULL */
|
|
#include <stdarg.h>
|
|
|
|
extern char *strndup_user(const char __user *, long);
|
|
extern void *memdup_user(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_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_STRNICMP
|
|
extern int strnicmp(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_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 strstrip(char *);
|
|
#ifndef __HAVE_ARCH_STRSTR
|
|
extern char * strstr(const char *,const char *);
|
|
#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_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_MEMCHR
|
|
extern void * memchr(const void *,int,__kernel_size_t);
|
|
#endif
|
|
|
|
extern char *kstrdup(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 **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);
|
|
|
|
#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);
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
#endif
|
|
#endif /* _LINUX_STRING_H_ */
|