1 #ifndef _LINUX_STRING_H_ 2 #define _LINUX_STRING_H_ 3 4 #include <linux/types.h> /* for size_t */ 5 #include <linux/stddef.h> /* for NULL */ 6 7 #ifdef __cplusplus 8 extern "C" { 9 #endif 10 11 extern char * ___strtok; 12 extern char * strpbrk(const char *,const char *); 13 extern char * strtok(char *,const char *); 14 extern char * strsep(char **,const char *); 15 extern __kernel_size_t strspn(const char *,const char *); 16 17 /* 18 * Include machine specific inline routines 19 */ 20 #include <asm/string.h> 21 22 #ifndef __HAVE_ARCH_STRCPY 23 extern char * strcpy(char *,const char *); 24 #endif 25 #ifndef __HAVE_ARCH_STRNCPY 26 extern char * strncpy(char *,const char *, __kernel_size_t); 27 #endif 28 #ifndef __HAVE_ARCH_STRLCPY 29 size_t strlcpy(char *, const char *, size_t); 30 #endif 31 #ifndef __HAVE_ARCH_STRCAT 32 extern char * strcat(char *, const char *); 33 #endif 34 #ifndef __HAVE_ARCH_STRNCAT 35 extern char * strncat(char *, const char *, __kernel_size_t); 36 #endif 37 #ifndef __HAVE_ARCH_STRLCAT 38 size_t strlcat(char *, const char *, size_t); 39 #endif 40 #ifndef __HAVE_ARCH_STRCMP 41 extern int strcmp(const char *,const char *); 42 #endif 43 #ifndef __HAVE_ARCH_STRNCMP 44 extern int strncmp(const char *,const char *,__kernel_size_t); 45 #endif 46 #ifndef __HAVE_ARCH_STRCASECMP 47 int strcasecmp(const char *s1, const char *s2); 48 #endif 49 #ifndef __HAVE_ARCH_STRNCASECMP 50 extern int strncasecmp(const char *s1, const char *s2, __kernel_size_t len); 51 #endif 52 #ifndef __HAVE_ARCH_STRCHR 53 extern char * strchr(const char *,int); 54 #endif 55 56 /** 57 * strchrnul() - return position of a character in the string, or end of string 58 * 59 * The strchrnul() function is like strchr() except that if c is not found 60 * in s, then it returns a pointer to the nul byte at the end of s, rather than 61 * NULL 62 * @s: string to search 63 * @c: character to search for 64 * Return: position of @c in @s, or end of @s if not found 65 */ 66 const char *strchrnul(const char *s, int c); 67 68 #ifndef __HAVE_ARCH_STRRCHR 69 extern char * strrchr(const char *,int); 70 #endif 71 #include <linux/linux_string.h> 72 #ifndef __HAVE_ARCH_STRSTR 73 extern char * strstr(const char *,const char *); 74 #endif 75 #ifndef __HAVE_ARCH_STRNSTR 76 extern char *strnstr(const char *, const char *, size_t); 77 #endif 78 #ifndef __HAVE_ARCH_STRLEN 79 extern __kernel_size_t strlen(const char *); 80 #endif 81 #ifndef __HAVE_ARCH_STRNLEN 82 extern __kernel_size_t strnlen(const char *,__kernel_size_t); 83 #endif 84 85 #ifndef __HAVE_ARCH_STRCSPN 86 /** 87 * strcspn() - find span of string without given characters 88 * 89 * Calculates the length of the initial segment of @s which consists entirely 90 * of bsytes not in reject. 91 * 92 * @s: string to search 93 * @reject: strings which cause the search to halt 94 * Return: number of characters at the start of @s which are not in @reject 95 */ 96 size_t strcspn(const char *s, const char *reject); 97 #endif 98 99 #ifdef CONFIG_SANDBOX 100 # define strdup sandbox_strdup 101 # define strndup sandbox_strndup 102 #endif 103 104 #ifndef __HAVE_ARCH_STRDUP 105 extern char * strdup(const char *); 106 extern char * strndup(const char *, size_t); 107 #endif 108 #ifndef __HAVE_ARCH_STRSWAB 109 extern char * strswab(const char *); 110 #endif 111 112 #ifndef __HAVE_ARCH_MEMSET 113 extern void * memset(void *,int,__kernel_size_t); 114 #endif 115 #ifndef __HAVE_ARCH_MEMCPY 116 extern void * memcpy(void *,const void *,__kernel_size_t); 117 #endif 118 #ifndef __HAVE_ARCH_MEMMOVE 119 extern void * memmove(void *,const void *,__kernel_size_t); 120 #endif 121 #ifndef __HAVE_ARCH_MEMSCAN 122 extern void * memscan(void *,int,__kernel_size_t); 123 #endif 124 #ifndef __HAVE_ARCH_MEMCMP 125 extern int memcmp(const void *,const void *,__kernel_size_t); 126 #endif 127 #ifndef __HAVE_ARCH_MEMCHR 128 extern void * memchr(const void *,int,__kernel_size_t); 129 #endif 130 #ifndef __HAVE_ARCH_MEMCHR_INV 131 void *memchr_inv(const void *, int, size_t); 132 #endif 133 134 /** 135 * memdup() - allocate a buffer and copy in the contents 136 * 137 * Note that this returns a valid pointer even if @len is 0 138 * 139 * @src: data to copy in 140 * @len: number of bytes to copy 141 * Return: allocated buffer with the copied contents, or NULL if not enough 142 * memory is available 143 * 144 */ 145 char *memdup(const void *src, size_t len); 146 147 unsigned long ustrtoul(const char *cp, char **endp, unsigned int base); 148 unsigned long long ustrtoull(const char *cp, char **endp, unsigned int base); 149 150 #ifdef __cplusplus 151 } 152 #endif 153 154 #endif /* _LINUX_STRING_H_ */ 155