1 #ifndef _LINUX_STRING_H_
2 #define _LINUX_STRING_H_
3
4
5 #include <linux/compiler.h> /* for inline */
6 #include <linux/types.h> /* for size_t */
7 #include <linux/stddef.h> /* for NULL */
8 #include <stdarg.h>
9 #include <uapi/linux/string.h>
10
11 extern char *strndup_user(const char __user *, long);
12 extern void *memdup_user(const void __user *, size_t);
13
14 /*
15 * Include machine specific inline routines
16 */
17 #include <asm/string.h>
18
19 #ifndef __HAVE_ARCH_STRCPY
20 extern char * strcpy(char *,const char *);
21 #endif
22 #ifndef __HAVE_ARCH_STRNCPY
23 extern char * strncpy(char *,const char *, __kernel_size_t);
24 #endif
25 #ifndef __HAVE_ARCH_STRLCPY
26 size_t strlcpy(char *, const char *, size_t);
27 #endif
28 #ifndef __HAVE_ARCH_STRSCPY
29 ssize_t strscpy(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 extern size_t strlcat(char *, const char *, __kernel_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_STRNICMP
47 #define strnicmp strncasecmp
48 #endif
49 #ifndef __HAVE_ARCH_STRCASECMP
50 extern int strcasecmp(const char *s1, const char *s2);
51 #endif
52 #ifndef __HAVE_ARCH_STRNCASECMP
53 extern int strncasecmp(const char *s1, const char *s2, size_t n);
54 #endif
55 #ifndef __HAVE_ARCH_STRCHR
56 extern char * strchr(const char *,int);
57 #endif
58 #ifndef __HAVE_ARCH_STRCHRNUL
59 extern char * strchrnul(const char *,int);
60 #endif
61 #ifndef __HAVE_ARCH_STRNCHR
62 extern char * strnchr(const char *, size_t, int);
63 #endif
64 #ifndef __HAVE_ARCH_STRRCHR
65 extern char * strrchr(const char *,int);
66 #endif
67 extern char * __must_check skip_spaces(const char *);
68
69 extern char *strim(char *);
70
71 static inline __must_check char *strstrip(char *str)
72 {
73 return strim(str);
74 }
75
76 #ifndef __HAVE_ARCH_STRSTR
77 extern char * strstr(const char *, const char *);
78 #endif
79 #ifndef __HAVE_ARCH_STRNSTR
80 extern char * strnstr(const char *, const char *, size_t);
81 #endif
82 #ifndef __HAVE_ARCH_STRLEN
83 extern __kernel_size_t strlen(const char *);
84 #endif
85 #ifndef __HAVE_ARCH_STRNLEN
86 extern __kernel_size_t strnlen(const char *,__kernel_size_t);
87 #endif
88 #ifndef __HAVE_ARCH_STRPBRK
89 extern char * strpbrk(const char *,const char *);
90 #endif
91 #ifndef __HAVE_ARCH_STRSEP
92 extern char * strsep(char **,const char *);
93 #endif
94 #ifndef __HAVE_ARCH_STRSPN
95 extern __kernel_size_t strspn(const char *,const char *);
96 #endif
97 #ifndef __HAVE_ARCH_STRCSPN
98 extern __kernel_size_t strcspn(const char *,const char *);
99 #endif
100
101 #ifndef __HAVE_ARCH_MEMSET
102 extern void * memset(void *,int,__kernel_size_t);
103 #endif
104 #ifndef __HAVE_ARCH_MEMCPY
105 extern void * memcpy(void *,const void *,__kernel_size_t);
106 #endif
107 #ifndef __HAVE_ARCH_MEMMOVE
108 extern void * memmove(void *,const void *,__kernel_size_t);
109 #endif
110 #ifndef __HAVE_ARCH_MEMSCAN
111 extern void * memscan(void *,int,__kernel_size_t);
112 #endif
113 #ifndef __HAVE_ARCH_MEMCMP
114 extern int memcmp(const void *,const void *,__kernel_size_t);
115 #endif
116 #ifndef __HAVE_ARCH_BCMP
117 extern int bcmp(const void *,const void *,__kernel_size_t);
118 #endif
119 #ifndef __HAVE_ARCH_MEMCHR
120 extern void * memchr(const void *,int,__kernel_size_t);
121 #endif
122 void *memchr_inv(const void *s, int c, size_t n);
123
124 extern char *kstrdup(const char *s, gfp_t gfp);
125 extern char *kstrndup(const char *s, size_t len, gfp_t gfp);
126 extern void *kmemdup(const void *src, size_t len, gfp_t gfp);
127 extern char *kmemdup_nul(const char *s, size_t len, gfp_t gfp);
128
129 extern char **argv_split(gfp_t gfp, const char *str, int *argcp);
130 extern void argv_free(char **argv);
131
132 extern bool sysfs_streq(const char *s1, const char *s2);
133 extern int strtobool(const char *s, bool *res);
134
135 #ifdef CONFIG_BINARY_PRINTF
136 int vbin_printf(u32 *bin_buf, size_t size, const char *fmt, va_list args);
137 int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf);
138 int bprintf(u32 *bin_buf, size_t size, const char *fmt, ...) __printf(3, 4);
139 #endif
140
141 extern ssize_t memory_read_from_buffer(void *to, size_t count, loff_t *ppos,
142 const void *from, size_t available);
143
144 /**
145 * strstarts - does @str start with @prefix?
146 * @str: string to examine
147 * @prefix: prefix to look for.
148 */
149 static inline bool strstarts(const char *str, const char *prefix)
150 {
151 return strncmp(str, prefix, strlen(prefix)) == 0;
152 }
153
154 size_t memweight(const void *ptr, size_t bytes);
155 void memzero_explicit(void *s, size_t count);
156
157 /**
158 * kbasename - return the last part of a pathname.
159 *
160 * @path: path to extract the filename from.
161 */
162 static inline const char *kbasename(const char *path)
163 {
164 const char *tail = strrchr(path, '/');
165 return tail ? tail + 1 : path;
166 }
167
168 #endif /* _LINUX_STRING_H_ */
169
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