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 15extern char *strndup_user(const char __user *, long); 16extern 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 24extern char * strcpy(char *,const char *); 25#endif 26#ifndef __HAVE_ARCH_STRNCPY 27extern char * strncpy(char *,const char *, __kernel_size_t); 28#endif 29#ifndef __HAVE_ARCH_STRLCPY 30size_t strlcpy(char *, const char *, size_t); 31#endif 32#ifndef __HAVE_ARCH_STRCAT 33extern char * strcat(char *, const char *); 34#endif 35#ifndef __HAVE_ARCH_STRNCAT 36extern char * strncat(char *, const char *, __kernel_size_t); 37#endif 38#ifndef __HAVE_ARCH_STRLCAT 39extern size_t strlcat(char *, const char *, __kernel_size_t); 40#endif 41#ifndef __HAVE_ARCH_STRCMP 42extern int strcmp(const char *,const char *); 43#endif 44#ifndef __HAVE_ARCH_STRNCMP 45extern int strncmp(const char *,const char *,__kernel_size_t); 46#endif 47#ifndef __HAVE_ARCH_STRNICMP 48extern int strnicmp(const char *, const char *, __kernel_size_t); 49#endif 50#ifndef __HAVE_ARCH_STRCASECMP 51extern int strcasecmp(const char *s1, const char *s2); 52#endif 53#ifndef __HAVE_ARCH_STRNCASECMP 54extern int strncasecmp(const char *s1, const char *s2, size_t n); 55#endif 56#ifndef __HAVE_ARCH_STRCHR 57extern char * strchr(const char *,int); 58#endif 59#ifndef __HAVE_ARCH_STRNCHR 60extern char * strnchr(const char *, size_t, int); 61#endif 62#ifndef __HAVE_ARCH_STRRCHR 63extern char * strrchr(const char *,int); 64#endif 65extern char * __must_check skip_spaces(const char *); 66 67extern char *strim(char *); 68 69static inline __must_check char *strstrip(char *str) 70{ 71 return strim(str); 72} 73 74#ifndef __HAVE_ARCH_STRSTR 75extern char * strstr(const char *, const char *); 76#endif 77#ifndef __HAVE_ARCH_STRNSTR 78extern char * strnstr(const char *, const char *, size_t); 79#endif 80#ifndef __HAVE_ARCH_STRLEN 81extern __kernel_size_t strlen(const char *); 82#endif 83#ifndef __HAVE_ARCH_STRNLEN 84extern __kernel_size_t strnlen(const char *,__kernel_size_t); 85#endif 86#ifndef __HAVE_ARCH_STRPBRK 87extern char * strpbrk(const char *,const char *); 88#endif 89#ifndef __HAVE_ARCH_STRSEP 90extern char * strsep(char **,const char *); 91#endif 92#ifndef __HAVE_ARCH_STRSPN 93extern __kernel_size_t strspn(const char *,const char *); 94#endif 95#ifndef __HAVE_ARCH_STRCSPN 96extern __kernel_size_t strcspn(const char *,const char *); 97#endif 98 99#ifndef __HAVE_ARCH_MEMSET 100extern void * memset(void *,int,__kernel_size_t); 101#endif 102#ifndef __HAVE_ARCH_MEMCPY 103extern void * memcpy(void *,const void *,__kernel_size_t); 104#endif 105#ifndef __HAVE_ARCH_MEMMOVE 106extern void * memmove(void *,const void *,__kernel_size_t); 107#endif 108#ifndef __HAVE_ARCH_MEMSCAN 109extern void * memscan(void *,int,__kernel_size_t); 110#endif 111#ifndef __HAVE_ARCH_MEMCMP 112extern int memcmp(const void *,const void *,__kernel_size_t); 113#endif 114#ifndef __HAVE_ARCH_MEMCHR 115extern void * memchr(const void *,int,__kernel_size_t); 116#endif 117 118extern char *kstrdup(const char *s, gfp_t gfp); 119extern char *kstrndup(const char *s, size_t len, gfp_t gfp); 120extern void *kmemdup(const void *src, size_t len, gfp_t gfp); 121 122extern char **argv_split(gfp_t gfp, const char *str, int *argcp); 123extern void argv_free(char **argv); 124 125extern bool sysfs_streq(const char *s1, const char *s2); 126 127#ifdef CONFIG_BINARY_PRINTF 128int vbin_printf(u32 *bin_buf, size_t size, const char *fmt, va_list args); 129int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf); 130int bprintf(u32 *bin_buf, size_t size, const char *fmt, ...) __printf(3, 4); 131#endif 132 133extern ssize_t memory_read_from_buffer(void *to, size_t count, loff_t *ppos, 134 const void *from, size_t available); 135 136/** 137 * strstarts - does @str start with @prefix? 138 * @str: string to examine 139 * @prefix: prefix to look for. 140 */ 141static inline bool strstarts(const char *str, const char *prefix) 142{ 143 return strncmp(str, prefix, strlen(prefix)) == 0; 144} 145#endif 146#endif /* _LINUX_STRING_H_ */ 147