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1da177e4 LT |
1 | #ifndef _LINUX_STRING_H_ |
2 | #define _LINUX_STRING_H_ | |
3 | ||
1da177e4 LT |
4 | |
5 | #include <linux/compiler.h> /* for inline */ | |
6 | #include <linux/types.h> /* for size_t */ | |
7 | #include <linux/stddef.h> /* for NULL */ | |
4370aa4a | 8 | #include <stdarg.h> |
607ca46e | 9 | #include <uapi/linux/string.h> |
1da177e4 | 10 | |
96840aa0 | 11 | extern char *strndup_user(const char __user *, long); |
610a77e0 | 12 | extern void *memdup_user(const void __user *, size_t); |
e9d408e1 | 13 | extern void *memdup_user_nul(const void __user *, size_t); |
96840aa0 | 14 | |
1da177e4 LT |
15 | /* |
16 | * Include machine specific inline routines | |
17 | */ | |
18 | #include <asm/string.h> | |
19 | ||
20 | #ifndef __HAVE_ARCH_STRCPY | |
21 | extern char * strcpy(char *,const char *); | |
22 | #endif | |
23 | #ifndef __HAVE_ARCH_STRNCPY | |
24 | extern char * strncpy(char *,const char *, __kernel_size_t); | |
25 | #endif | |
26 | #ifndef __HAVE_ARCH_STRLCPY | |
27 | size_t strlcpy(char *, const char *, size_t); | |
28 | #endif | |
30035e45 CM |
29 | #ifndef __HAVE_ARCH_STRSCPY |
30 | ssize_t __must_check strscpy(char *, const char *, size_t); | |
31 | #endif | |
1da177e4 LT |
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 | |
ded220bd DM |
47 | #ifndef __HAVE_ARCH_STRCASECMP |
48 | extern int strcasecmp(const char *s1, const char *s2); | |
49 | #endif | |
50 | #ifndef __HAVE_ARCH_STRNCASECMP | |
51 | extern int strncasecmp(const char *s1, const char *s2, size_t n); | |
52 | #endif | |
1da177e4 LT |
53 | #ifndef __HAVE_ARCH_STRCHR |
54 | extern char * strchr(const char *,int); | |
55 | #endif | |
11d200e9 GL |
56 | #ifndef __HAVE_ARCH_STRCHRNUL |
57 | extern char * strchrnul(const char *,int); | |
58 | #endif | |
1da177e4 LT |
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 | |
f653398c | 65 | extern char * __must_check skip_spaces(const char *); |
ca54cb8c KM |
66 | |
67 | extern char *strim(char *); | |
68 | ||
69 | static inline __must_check char *strstrip(char *str) | |
70 | { | |
71 | return strim(str); | |
72 | } | |
73 | ||
1da177e4 | 74 | #ifndef __HAVE_ARCH_STRSTR |
d5f1fb53 LZ |
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); | |
1da177e4 LT |
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 | |
8833d328 KM |
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 | |
1da177e4 LT |
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 | |
6abccd1b DW |
117 | #ifndef __HAVE_ARCH_MEMCPY_MCSAFE |
118 | static inline __must_check int memcpy_mcsafe(void *dst, const void *src, | |
119 | size_t cnt) | |
120 | { | |
121 | memcpy(dst, src, cnt); | |
122 | return 0; | |
123 | } | |
124 | #endif | |
0aed55af DW |
125 | #ifndef __HAVE_ARCH_MEMCPY_FLUSHCACHE |
126 | static inline void memcpy_flushcache(void *dst, const void *src, size_t cnt) | |
127 | { | |
128 | memcpy(dst, src, cnt); | |
129 | } | |
130 | #endif | |
79824820 | 131 | void *memchr_inv(const void *s, int c, size_t n); |
94df2904 | 132 | char *strreplace(char *s, char old, char new); |
1da177e4 | 133 | |
a4bb1e43 AH |
134 | extern void kfree_const(const void *x); |
135 | ||
48a27055 | 136 | extern char *kstrdup(const char *s, gfp_t gfp) __malloc; |
a4bb1e43 | 137 | extern const char *kstrdup_const(const char *s, gfp_t gfp); |
1e66df3e | 138 | extern char *kstrndup(const char *s, size_t len, gfp_t gfp); |
1a2f67b4 | 139 | extern void *kmemdup(const void *src, size_t len, gfp_t gfp); |
543537bd | 140 | |
d84d1cc7 JF |
141 | extern char **argv_split(gfp_t gfp, const char *str, int *argcp); |
142 | extern void argv_free(char **argv); | |
143 | ||
34990cf7 | 144 | extern bool sysfs_streq(const char *s1, const char *s2); |
ef951599 KC |
145 | extern int kstrtobool(const char *s, bool *res); |
146 | static inline int strtobool(const char *s, bool *res) | |
147 | { | |
148 | return kstrtobool(s, res); | |
149 | } | |
34990cf7 | 150 | |
56b06081 | 151 | int match_string(const char * const *array, size_t n, const char *string); |
e1fe7b6a HK |
152 | int __sysfs_match_string(const char * const *array, size_t n, const char *s); |
153 | ||
154 | /** | |
155 | * sysfs_match_string - matches given string in an array | |
156 | * @_a: array of strings | |
157 | * @_s: string to match with | |
158 | * | |
159 | * Helper for __sysfs_match_string(). Calculates the size of @a automatically. | |
160 | */ | |
161 | #define sysfs_match_string(_a, _s) __sysfs_match_string(_a, ARRAY_SIZE(_a), _s) | |
56b06081 | 162 | |
4370aa4a LJ |
163 | #ifdef CONFIG_BINARY_PRINTF |
164 | int vbin_printf(u32 *bin_buf, size_t size, const char *fmt, va_list args); | |
165 | int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf); | |
166 | int bprintf(u32 *bin_buf, size_t size, const char *fmt, ...) __printf(3, 4); | |
167 | #endif | |
168 | ||
e108526e | 169 | extern ssize_t memory_read_from_buffer(void *to, size_t count, loff_t *ppos, |
d4c5efdb | 170 | const void *from, size_t available); |
e108526e | 171 | |
66f92cf9 RR |
172 | /** |
173 | * strstarts - does @str start with @prefix? | |
174 | * @str: string to examine | |
175 | * @prefix: prefix to look for. | |
176 | */ | |
177 | static inline bool strstarts(const char *str, const char *prefix) | |
178 | { | |
179 | return strncmp(str, prefix, strlen(prefix)) == 0; | |
180 | } | |
639b9e34 | 181 | |
d4c5efdb DB |
182 | size_t memweight(const void *ptr, size_t bytes); |
183 | void memzero_explicit(void *s, size_t count); | |
639b9e34 | 184 | |
b18888ab AS |
185 | /** |
186 | * kbasename - return the last part of a pathname. | |
187 | * | |
188 | * @path: path to extract the filename from. | |
189 | */ | |
190 | static inline const char *kbasename(const char *path) | |
191 | { | |
192 | const char *tail = strrchr(path, '/'); | |
193 | return tail ? tail + 1 : path; | |
194 | } | |
195 | ||
1da177e4 | 196 | #endif /* _LINUX_STRING_H_ */ |