1 #ifndef _LINUX_STRING_H_
2 #define _LINUX_STRING_H_
5 #include <linux/compiler.h> /* for inline */
6 #include <linux/types.h> /* for size_t */
7 #include <linux/stddef.h> /* for NULL */
9 #include <uapi/linux/string.h>
11 extern char *strndup_user(const char __user
*, long);
12 extern void *memdup_user(const void __user
*, size_t);
15 * Include machine specific inline routines
17 #include <asm/string.h>
19 #ifndef __HAVE_ARCH_STRCPY
20 extern char * strcpy(char *,const char *);
22 #ifndef __HAVE_ARCH_STRNCPY
23 extern char * strncpy(char *,const char *, __kernel_size_t
);
25 #ifndef __HAVE_ARCH_STRLCPY
26 size_t strlcpy(char *, const char *, size_t);
28 #ifndef __HAVE_ARCH_STRCAT
29 extern char * strcat(char *, const char *);
31 #ifndef __HAVE_ARCH_STRNCAT
32 extern char * strncat(char *, const char *, __kernel_size_t
);
34 #ifndef __HAVE_ARCH_STRLCAT
35 extern size_t strlcat(char *, const char *, __kernel_size_t
);
37 #ifndef __HAVE_ARCH_STRCMP
38 extern int strcmp(const char *,const char *);
40 #ifndef __HAVE_ARCH_STRNCMP
41 extern int strncmp(const char *,const char *,__kernel_size_t
);
43 #ifndef __HAVE_ARCH_STRNICMP
44 extern int strnicmp(const char *, const char *, __kernel_size_t
);
46 #ifndef __HAVE_ARCH_STRCASECMP
47 extern int strcasecmp(const char *s1
, const char *s2
);
49 #ifndef __HAVE_ARCH_STRNCASECMP
50 extern int strncasecmp(const char *s1
, const char *s2
, size_t n
);
52 #ifndef __HAVE_ARCH_STRCHR
53 extern char * strchr(const char *,int);
55 #ifndef __HAVE_ARCH_STRNCHR
56 extern char * strnchr(const char *, size_t, int);
58 #ifndef __HAVE_ARCH_STRRCHR
59 extern char * strrchr(const char *,int);
61 extern char * __must_check
skip_spaces(const char *);
63 extern char *strim(char *);
65 static inline __must_check
char *strstrip(char *str
)
70 #ifndef __HAVE_ARCH_STRSTR
71 extern char * strstr(const char *, const char *);
73 #ifndef __HAVE_ARCH_STRNSTR
74 extern char * strnstr(const char *, const char *, size_t);
76 #ifndef __HAVE_ARCH_STRLEN
77 extern __kernel_size_t
strlen(const char *);
79 #ifndef __HAVE_ARCH_STRNLEN
80 extern __kernel_size_t
strnlen(const char *,__kernel_size_t
);
82 #ifndef __HAVE_ARCH_STRPBRK
83 extern char * strpbrk(const char *,const char *);
85 #ifndef __HAVE_ARCH_STRSEP
86 extern char * strsep(char **,const char *);
88 #ifndef __HAVE_ARCH_STRSPN
89 extern __kernel_size_t
strspn(const char *,const char *);
91 #ifndef __HAVE_ARCH_STRCSPN
92 extern __kernel_size_t
strcspn(const char *,const char *);
95 #ifndef __HAVE_ARCH_MEMSET
96 extern void * memset(void *,int,__kernel_size_t
);
98 #ifndef __HAVE_ARCH_MEMCPY
99 extern void * memcpy(void *,const void *,__kernel_size_t
);
101 #ifndef __HAVE_ARCH_MEMMOVE
102 extern void * memmove(void *,const void *,__kernel_size_t
);
104 #ifndef __HAVE_ARCH_MEMSCAN
105 extern void * memscan(void *,int,__kernel_size_t
);
107 #ifndef __HAVE_ARCH_MEMCMP
108 extern int memcmp(const void *,const void *,__kernel_size_t
);
110 #ifndef __HAVE_ARCH_MEMCHR
111 extern void * memchr(const void *,int,__kernel_size_t
);
113 void *memchr_inv(const void *s
, int c
, size_t n
);
115 extern char *kstrdup(const char *s
, gfp_t gfp
);
116 extern char *kstrndup(const char *s
, size_t len
, gfp_t gfp
);
117 extern void *kmemdup(const void *src
, size_t len
, gfp_t gfp
);
119 extern char **argv_split(gfp_t gfp
, const char *str
, int *argcp
);
120 extern void argv_free(char **argv
);
122 extern bool sysfs_streq(const char *s1
, const char *s2
);
123 extern int strtobool(const char *s
, bool *res
);
125 #ifdef CONFIG_BINARY_PRINTF
126 int vbin_printf(u32
*bin_buf
, size_t size
, const char *fmt
, va_list args
);
127 int bstr_printf(char *buf
, size_t size
, const char *fmt
, const u32
*bin_buf
);
128 int bprintf(u32
*bin_buf
, size_t size
, const char *fmt
, ...) __printf(3, 4);
131 extern ssize_t
memory_read_from_buffer(void *to
, size_t count
, loff_t
*ppos
,
132 const void *from
, size_t available
);
135 * strstarts - does @str start with @prefix?
136 * @str: string to examine
137 * @prefix: prefix to look for.
139 static inline bool strstarts(const char *str
, const char *prefix
)
141 return strncmp(str
, prefix
, strlen(prefix
)) == 0;
144 extern size_t memweight(const void *ptr
, size_t bytes
);
147 * kbasename - return the last part of a pathname.
149 * @path: path to extract the filename from.
151 static inline const char *kbasename(const char *path
)
153 const char *tail
= strrchr(path
, '/');
154 return tail
? tail
+ 1 : path
;
157 #endif /* _LINUX_STRING_H_ */
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