1 #ifndef _LINUX_STRING_H_
2 #define _LINUX_STRING_H_
4 /* We don't want strings.h stuff being used by user stuff by accident */
10 #include <linux/compiler.h> /* for inline */
11 #include <linux/types.h> /* for size_t */
12 #include <linux/stddef.h> /* for NULL */
15 extern char *strndup_user(const char __user *, long);
16 extern void *memdup_user(const void __user *, size_t);
19 * Include machine specific inline routines
21 #include <asm/string.h>
23 #ifndef __HAVE_ARCH_STRCPY
24 extern char * strcpy(char *,const char *);
26 #ifndef __HAVE_ARCH_STRNCPY
27 extern char * strncpy(char *,const char *, __kernel_size_t);
29 #ifndef __HAVE_ARCH_STRLCPY
30 size_t strlcpy(char *, const char *, size_t);
32 #ifndef __HAVE_ARCH_STRCAT
33 extern char * strcat(char *, const char *);
35 #ifndef __HAVE_ARCH_STRNCAT
36 extern char * strncat(char *, const char *, __kernel_size_t);
38 #ifndef __HAVE_ARCH_STRLCAT
39 extern size_t strlcat(char *, const char *, __kernel_size_t);
41 #ifndef __HAVE_ARCH_STRCMP
42 extern int strcmp(const char *,const char *);
44 #ifndef __HAVE_ARCH_STRNCMP
45 extern int strncmp(const char *,const char *,__kernel_size_t);
47 #ifndef __HAVE_ARCH_STRNICMP
48 extern int strnicmp(const char *, const char *, __kernel_size_t);
50 #ifndef __HAVE_ARCH_STRCASECMP
51 extern int strcasecmp(const char *s1, const char *s2);
53 #ifndef __HAVE_ARCH_STRNCASECMP
54 extern int strncasecmp(const char *s1, const char *s2, size_t n);
56 #ifndef __HAVE_ARCH_STRCHR
57 extern char * strchr(const char *,int);
59 #ifndef __HAVE_ARCH_STRNCHR
60 extern char * strnchr(const char *, size_t, int);
62 #ifndef __HAVE_ARCH_STRRCHR
63 extern char * strrchr(const char *,int);
65 extern char * __must_check skip_spaces(const char *);
67 extern char *strim(char *);
69 static inline __must_check char *strstrip(char *str)
74 #ifndef __HAVE_ARCH_STRSTR
75 extern char * strstr(const char *, const char *);
77 #ifndef __HAVE_ARCH_STRNSTR
78 extern char * strnstr(const char *, const char *, size_t);
80 #ifndef __HAVE_ARCH_STRLEN
81 extern __kernel_size_t strlen(const char *);
83 #ifndef __HAVE_ARCH_STRNLEN
84 extern __kernel_size_t strnlen(const char *,__kernel_size_t);
86 #ifndef __HAVE_ARCH_STRPBRK
87 extern char * strpbrk(const char *,const char *);
89 #ifndef __HAVE_ARCH_STRSEP
90 extern char * strsep(char **,const char *);
92 #ifndef __HAVE_ARCH_STRSPN
93 extern __kernel_size_t strspn(const char *,const char *);
95 #ifndef __HAVE_ARCH_STRCSPN
96 extern __kernel_size_t strcspn(const char *,const char *);
99 #ifndef __HAVE_ARCH_MEMSET
100 extern void * memset(void *,int,__kernel_size_t);
102 #ifndef __HAVE_ARCH_MEMCPY
103 extern void * memcpy(void *,const void *,__kernel_size_t);
105 #ifndef __HAVE_ARCH_MEMMOVE
106 extern void * memmove(void *,const void *,__kernel_size_t);
108 #ifndef __HAVE_ARCH_MEMSCAN
109 extern void * memscan(void *,int,__kernel_size_t);
111 #ifndef __HAVE_ARCH_MEMCMP
112 extern int memcmp(const void *,const void *,__kernel_size_t);
114 #ifndef __HAVE_ARCH_MEMCHR
115 extern void * memchr(const void *,int,__kernel_size_t);
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 #endif /* _LINUX_STRING_H_ */