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 * strstrip(char *); 66 #ifndef __HAVE_ARCH_STRSTR 67 extern char * strstr(const char *,const char *); 68 #endif 69 #ifndef __HAVE_ARCH_STRLEN 70 extern __kernel_size_t strlen(const char *); 71 #endif 72 #ifndef __HAVE_ARCH_STRNLEN 73 extern __kernel_size_t strnlen(const char *,__kernel_size_t); 74 #endif 75 #ifndef __HAVE_ARCH_STRPBRK 76 extern char * strpbrk(const char *,const char *); 77 #endif 78 #ifndef __HAVE_ARCH_STRSEP 79 extern char * strsep(char **,const char *); 80 #endif 81 #ifndef __HAVE_ARCH_STRSPN 82 extern __kernel_size_t strspn(const char *,const char *); 83 #endif 84 #ifndef __HAVE_ARCH_STRCSPN 85 extern __kernel_size_t strcspn(const char *,const char *); 86 #endif 87 88 #ifndef __HAVE_ARCH_MEMSET 89 extern void * memset(void *,int,__kernel_size_t); 90 #endif 91 #ifndef __HAVE_ARCH_MEMCPY 92 extern void * memcpy(void *,const void *,__kernel_size_t); 93 #endif 94 #ifndef __HAVE_ARCH_MEMMOVE 95 extern void * memmove(void *,const void *,__kernel_size_t); 96 #endif 97 #ifndef __HAVE_ARCH_MEMSCAN 98 extern void * memscan(void *,int,__kernel_size_t); 99 #endif 100 #ifndef __HAVE_ARCH_MEMCMP 101 extern int memcmp(const void *,const void *,__kernel_size_t); 102 #endif 103 #ifndef __HAVE_ARCH_MEMCHR 104 extern void * memchr(const void *,int,__kernel_size_t); 105 #endif 106 107 extern char *kstrdup(const char *s, gfp_t gfp); 108 extern char *kstrndup(const char *s, size_t len, gfp_t gfp); 109 extern void *kmemdup(const void *src, size_t len, gfp_t gfp); 110 111 extern char **argv_split(gfp_t gfp, const char *str, int *argcp); 112 extern void argv_free(char **argv); 113 114 extern bool sysfs_streq(const char *s1, const char *s2); 115 116 #ifdef CONFIG_BINARY_PRINTF 117 int vbin_printf(u32 *bin_buf, size_t size, const char *fmt, va_list args); 118 int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf); 119 int bprintf(u32 *bin_buf, size_t size, const char *fmt, ...) __printf(3, 4); 120 #endif 121 122 extern ssize_t memory_read_from_buffer(void *to, size_t count, loff_t *ppos, 123 const void *from, size_t available); 124 125 /** 126 * strstarts - does @str start with @prefix? 127 * @str: string to examine 128 * @prefix: prefix to look for. 129 */ 130 static inline bool strstarts(const char *str, const char *prefix) 131 { 132 return strncmp(str, prefix, strlen(prefix)) == 0; 133 } 134 #endif 135 #endif /* _LINUX_STRING_H_ */ 136