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 #define strnicmp strncasecmp
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_STRCHRNUL
56 extern char * strchrnul(const char *,int);
58 #ifndef __HAVE_ARCH_STRNCHR
59 extern char * strnchr(const char *, size_t, int);
61 #ifndef __HAVE_ARCH_STRRCHR
62 extern char * strrchr(const char *,int);
64 extern char * __must_check skip_spaces(const char *);
66 extern char *strim(char *);
68 static inline __must_check char *strstrip(char *str)
73 #ifndef __HAVE_ARCH_STRSTR
74 extern char * strstr(const char *, const char *);
76 #ifndef __HAVE_ARCH_STRNSTR
77 extern char * strnstr(const char *, const char *, size_t);
79 #ifndef __HAVE_ARCH_STRLEN
80 extern __kernel_size_t strlen(const char *);
82 #ifndef __HAVE_ARCH_STRNLEN
83 extern __kernel_size_t strnlen(const char *,__kernel_size_t);
85 #ifndef __HAVE_ARCH_STRPBRK
86 extern char * strpbrk(const char *,const char *);
88 #ifndef __HAVE_ARCH_STRSEP
89 extern char * strsep(char **,const char *);
91 #ifndef __HAVE_ARCH_STRSPN
92 extern __kernel_size_t strspn(const char *,const char *);
94 #ifndef __HAVE_ARCH_STRCSPN
95 extern __kernel_size_t strcspn(const char *,const char *);
98 #ifndef __HAVE_ARCH_MEMSET
99 extern void * memset(void *,int,__kernel_size_t);
101 #ifndef __HAVE_ARCH_MEMCPY
102 extern void * memcpy(void *,const void *,__kernel_size_t);
104 #ifndef __HAVE_ARCH_MEMMOVE
105 extern void * memmove(void *,const void *,__kernel_size_t);
107 #ifndef __HAVE_ARCH_MEMSCAN
108 extern void * memscan(void *,int,__kernel_size_t);
110 #ifndef __HAVE_ARCH_MEMCMP
111 extern int memcmp(const void *,const void *,__kernel_size_t);
113 #ifndef __HAVE_ARCH_MEMCHR
114 extern void * memchr(const void *,int,__kernel_size_t);
116 void *memchr_inv(const void *s, int c, size_t n);
118 extern char *kstrdup(const char *s, gfp_t gfp);
119 extern char *kstrndup(const char *s, size_t len, gfp_t gfp);
120 extern void *kmemdup(const void *src, size_t len, gfp_t gfp);
122 extern char **argv_split(gfp_t gfp, const char *str, int *argcp);
123 extern void argv_free(char **argv);
125 extern bool sysfs_streq(const char *s1, const char *s2);
126 extern int strtobool(const char *s, bool *res);
128 #ifdef CONFIG_BINARY_PRINTF
129 int vbin_printf(u32 *bin_buf, size_t size, const char *fmt, va_list args);
130 int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf);
131 int bprintf(u32 *bin_buf, size_t size, const char *fmt, ...) __printf(3, 4);
134 extern ssize_t memory_read_from_buffer(void *to, size_t count, loff_t *ppos,
135 const void *from, size_t available);
138 * strstarts - does @str start with @prefix?
139 * @str: string to examine
140 * @prefix: prefix to look for.
142 static inline bool strstarts(const char *str, const char *prefix)
144 return strncmp(str, prefix, strlen(prefix)) == 0;
147 size_t memweight(const void *ptr, size_t bytes);
148 void memzero_explicit(void *s, size_t count);
151 * kbasename - return the last part of a pathname.
153 * @path: path to extract the filename from.
155 static inline const char *kbasename(const char *path)
157 const char *tail = strrchr(path, '/');
158 return tail ? tail + 1 : path;
161 #endif /* _LINUX_STRING_H_ */