1 #ifndef _LINUX_STRING_H_ 2 #define _LINUX_STRING_H_ 3 4 /* We don't want strings.h stuff being used 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 #include <stdarg.h> 14 15 extern char *strndup_user(const char __user *, long); 16 extern void *memdup_user(const void __user *, size_t); 17 18 /* 19 * Include machine specific inline routines 20 */ 21 #include <asm/string.h> 22 23 #ifndef __HAVE_ARCH_STRCPY 24 extern char * strcpy(char *,const char *); 25 #endif 26 #ifndef __HAVE_ARCH_STRNCPY 27 extern char * strncpy(char *,const char *, __kernel_size_t); 28 #endif 29 #ifndef __HAVE_ARCH_STRLCPY 30 size_t strlcpy(char *, const char *, size_t); 31 #endif 32 #ifndef __HAVE_ARCH_STRCAT 33 extern char * strcat(char *, const char *); 34 #endif 35 #ifndef __HAVE_ARCH_STRNCAT 36 extern char * strncat(char *, const char *, __kernel_size_t); 37 #endif 38 #ifndef __HAVE_ARCH_STRLCAT 39 extern size_t strlcat(char *, const char *, __kernel_size_t); 40 #endif 41 #ifndef __HAVE_ARCH_STRCMP 42 extern int strcmp(const char *,const char *); 43 #endif 44 #ifndef __HAVE_ARCH_STRNCMP 45 extern int strncmp(const char *,const char *,__kernel_size_t); 46 #endif 47 #ifndef __HAVE_ARCH_STRNICMP 48 extern int strnicmp(const char *, const char *, __kernel_size_t); 49 #endif 50 #ifndef __HAVE_ARCH_STRCASECMP 51 extern int strcasecmp(const char *s1, const char *s2); 52 #endif 53 #ifndef __HAVE_ARCH_STRNCASECMP 54 extern int strncasecmp(const char *s1, const char *s2, size_t n); 55 #endif 56 #ifndef __HAVE_ARCH_STRCHR 57 extern char * strchr(const char *,int); 58 #endif 59 #ifndef __HAVE_ARCH_STRNCHR 60 extern char * strnchr(const char *, size_t, int); 61 #endif 62 #ifndef __HAVE_ARCH_STRRCHR 63 extern char * strrchr(const char *,int); 64 #endif 65 extern char * __must_check skip_spaces(const char *); 66 67 extern char *strim(char *); 68 strstrip(char * str)69 static inline __must_check char *strstrip(char *str) 70 { 71 return strim(str); 72 } 73 74 #ifndef __HAVE_ARCH_STRSTR 75 extern char * strstr(const char *, const char *); 76 #endif 77 #ifndef __HAVE_ARCH_STRNSTR 78 extern char * strnstr(const char *, const char *, size_t); 79 #endif 80 #ifndef __HAVE_ARCH_STRLEN 81 extern __kernel_size_t strlen(const char *); 82 #endif 83 #ifndef __HAVE_ARCH_STRNLEN 84 extern __kernel_size_t strnlen(const char *,__kernel_size_t); 85 #endif 86 #ifndef __HAVE_ARCH_STRPBRK 87 extern char * strpbrk(const char *,const char *); 88 #endif 89 #ifndef __HAVE_ARCH_STRSEP 90 extern char * strsep(char **,const char *); 91 #endif 92 #ifndef __HAVE_ARCH_STRSPN 93 extern __kernel_size_t strspn(const char *,const char *); 94 #endif 95 #ifndef __HAVE_ARCH_STRCSPN 96 extern __kernel_size_t strcspn(const char *,const char *); 97 #endif 98 99 #ifndef __HAVE_ARCH_MEMSET 100 extern void * memset(void *,int,__kernel_size_t); 101 #endif 102 #ifndef __HAVE_ARCH_MEMCPY 103 extern void * memcpy(void *,const void *,__kernel_size_t); 104 #endif 105 #ifndef __HAVE_ARCH_MEMMOVE 106 extern void * memmove(void *,const void *,__kernel_size_t); 107 #endif 108 #ifndef __HAVE_ARCH_MEMSCAN 109 extern void * memscan(void *,int,__kernel_size_t); 110 #endif 111 #ifndef __HAVE_ARCH_MEMCMP 112 extern int memcmp(const void *,const void *,__kernel_size_t); 113 #endif 114 #ifndef __HAVE_ARCH_MEMCHR 115 extern void * memchr(const void *,int,__kernel_size_t); 116 #endif 117 void *memchr_inv(const void *s, int c, size_t n); 118 119 extern char *kstrdup(const char *s, gfp_t gfp); 120 extern char *kstrndup(const char *s, size_t len, gfp_t gfp); 121 extern void *kmemdup(const void *src, size_t len, gfp_t gfp); 122 123 extern char **argv_split(gfp_t gfp, const char *str, int *argcp); 124 extern void argv_free(char **argv); 125 126 extern bool sysfs_streq(const char *s1, const char *s2); 127 extern int strtobool(const char *s, bool *res); 128 129 #ifdef CONFIG_BINARY_PRINTF 130 int vbin_printf(u32 *bin_buf, size_t size, const char *fmt, va_list args); 131 int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf); 132 int bprintf(u32 *bin_buf, size_t size, const char *fmt, ...) __printf(3, 4); 133 #endif 134 135 extern ssize_t memory_read_from_buffer(void *to, size_t count, loff_t *ppos, 136 const void *from, size_t available); 137 138 /** 139 * strstarts - does @str start with @prefix? 140 * @str: string to examine 141 * @prefix: prefix to look for. 142 */ strstarts(const char * str,const char * prefix)143 static inline bool strstarts(const char *str, const char *prefix) 144 { 145 return strncmp(str, prefix, strlen(prefix)) == 0; 146 } 147 #endif 148 #endif /* _LINUX_STRING_H_ */ 149