include/linux/string.h

   1 #ifndef _LINUX_STRING_H_
   2 #define _LINUX_STRING_H_
   3
   4 /* We don't want strings.h stuff being user by user stuff by accident */
   5
   6 #ifndef __KERNEL__
   7 #include <string.h>
   8 #else
   9
  10 #include <linux/compiler.h>     /* for inline */
  11 #include <linux/types.h>        /* for size_t */
  12 #include <linux/stddef.h>       /* for NULL */
  13
  14 extern char *strndup_user(const char __user *, long);
  15
  16 /*
  17  * Include machine specific inline routines
  18  */
  19 #include <asm/string.h>
  20
  21 #ifndef __HAVE_ARCH_STRCPY
  22 extern char * strcpy(char *,const char *);
  23 #endif
  24 #ifndef __HAVE_ARCH_STRNCPY
  25 extern char * strncpy(char *,const char *, __kernel_size_t);
  26 #endif
  27 #ifndef __HAVE_ARCH_STRLCPY
  28 size_t strlcpy(char *, const char *, size_t);
  29 #endif
  30 #ifndef __HAVE_ARCH_STRCAT
  31 extern char * strcat(char *, const char *);
  32 #endif
  33 #ifndef __HAVE_ARCH_STRNCAT
  34 extern char * strncat(char *, const char *, __kernel_size_t);
  35 #endif
  36 #ifndef __HAVE_ARCH_STRLCAT
  37 extern size_t strlcat(char *, const char *, __kernel_size_t);
  38 #endif
  39 #ifndef __HAVE_ARCH_STRCMP
  40 extern int strcmp(const char *,const char *);
  41 #endif
  42 #ifndef __HAVE_ARCH_STRNCMP
  43 extern int strncmp(const char *,const char *,__kernel_size_t);
  44 #endif
  45 #ifndef __HAVE_ARCH_STRNICMP
  46 extern int strnicmp(const char *, const char *, __kernel_size_t);
  47 #endif
  48 #ifndef __HAVE_ARCH_STRCASECMP
  49 extern int strcasecmp(const char *s1, const char *s2);
  50 #endif
  51 #ifndef __HAVE_ARCH_STRNCASECMP
  52 extern int strncasecmp(const char *s1, const char *s2, size_t n);
  53 #endif
  54 #ifndef __HAVE_ARCH_STRCHR
  55 extern char * strchr(const char *,int);
  56 #endif
  57 #ifndef __HAVE_ARCH_STRNCHR
  58 extern char * strnchr(const char *, size_t, int);
  59 #endif
  60 #ifndef __HAVE_ARCH_STRRCHR
  61 extern char * strrchr(const char *,int);
  62 #endif
  63 extern char * strstrip(char *);
  64 #ifndef __HAVE_ARCH_STRSTR
  65 extern char * strstr(const char *,const char *);
  66 #endif
  67 #ifndef __HAVE_ARCH_STRLEN
  68 extern __kernel_size_t strlen(const char *);
  69 #endif
  70 #ifndef __HAVE_ARCH_STRNLEN
  71 extern __kernel_size_t strnlen(const char *,__kernel_size_t);
  72 #endif
  73 #ifndef __HAVE_ARCH_STRPBRK
  74 extern char * strpbrk(const char *,const char *);
  75 #endif
  76 #ifndef __HAVE_ARCH_STRSEP
  77 extern char * strsep(char **,const char *);
  78 #endif
  79 #ifndef __HAVE_ARCH_STRSPN
  80 extern __kernel_size_t strspn(const char *,const char *);
  81 #endif
  82 #ifndef __HAVE_ARCH_STRCSPN
  83 extern __kernel_size_t strcspn(const char *,const char *);
  84 #endif
  85
  86 #ifndef __HAVE_ARCH_MEMSET
  87 extern void * memset(void *,int,__kernel_size_t);
  88 #endif
  89 #ifndef __HAVE_ARCH_MEMCPY
  90 extern void * memcpy(void *,const void *,__kernel_size_t);
  91 #endif
  92 #ifndef __HAVE_ARCH_MEMMOVE
  93 extern void * memmove(void *,const void *,__kernel_size_t);
  94 #endif
  95 #ifndef __HAVE_ARCH_MEMSCAN
  96 extern void * memscan(void *,int,__kernel_size_t);
  97 #endif
  98 #ifndef __HAVE_ARCH_MEMCMP
  99 extern int memcmp(const void *,const void *,__kernel_size_t);
 100 #endif
 101 #ifndef __HAVE_ARCH_MEMCHR
 102 extern void * memchr(const void *,int,__kernel_size_t);
 103 #endif
 104
 105 extern char *kstrdup(const char *s, gfp_t gfp);
 106 extern char *kstrndup(const char *s, size_t len, gfp_t gfp);
 107 extern void *kmemdup(const void *src, size_t len, gfp_t gfp);
 108
 109 extern char **argv_split(gfp_t gfp, const char *str, int *argcp);
 110 extern void argv_free(char **argv);
 111
 112 extern bool sysfs_streq(const char *s1, const char *s2);
 113
 114 extern ssize_t memory_read_from_buffer(void *to, size_t count, loff_t *ppos,
 115                         const void *from, size_t available);
 116
 117 #endif
 118 #endif /* _LINUX_STRING_H_ */