1 #ifndef _LINUX_STRING_H_
2 #define _LINUX_STRING_H_
3 
4 #include <linux/types.h>	/* for size_t */
5 #include <linux/stddef.h>	/* for NULL */
6 
7 #ifdef __cplusplus
8 extern "C" {
9 #endif
10 
11 extern char * ___strtok;
12 extern char * strpbrk(const char *,const char *);
13 extern char * strtok(char *,const char *);
14 extern char * strsep(char **,const char *);
15 extern __kernel_size_t strspn(const char *,const char *);
16 
17 
18 /*
19  * Include machine specific inline routines
20  */
21 #include <asm/string.h>
22 
23 #ifndef __HAVE_ARCH_STRCPY
24 extern char * strcpy(char *,const char *);
25 #endif
26 #ifndef __HAVE_ARCH_STRNCPY
27 extern char * strncpy(char *,const char *, __kernel_size_t);
28 #endif
29 #ifndef __HAVE_ARCH_STRLCPY
30 size_t strlcpy(char *, const char *, size_t);
31 #endif
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 size_t strlcat(char *, const char *, 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
47 #ifndef __HAVE_ARCH_STRCASECMP
48 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, __kernel_size_t len);
52 #endif
53 #ifndef __HAVE_ARCH_STRCHR
54 extern char * strchr(const char *,int);
55 #endif
56 
57 /**
58  * strchrnul() - return position of a character in the string, or end of string
59  *
60  * The strchrnul() function is like strchr() except that if c is not found
61  * in s, then it returns a pointer to the nul byte at the end of s, rather than
62  * NULL
63  * @s: string to search
64  * @c: character to search for
65  * @return position of @c in @s, or end of @s if not found
66  */
67 const char *strchrnul(const char *s, int c);
68 
69 #ifndef __HAVE_ARCH_STRRCHR
70 extern char * strrchr(const char *,int);
71 #endif
72 #include <linux/linux_string.h>
73 #ifndef __HAVE_ARCH_STRSTR
74 extern char * strstr(const char *,const char *);
75 #endif
76 #ifndef __HAVE_ARCH_STRLEN
77 extern __kernel_size_t strlen(const char *);
78 #endif
79 #ifndef __HAVE_ARCH_STRNLEN
80 extern __kernel_size_t strnlen(const char *,__kernel_size_t);
81 #endif
82 
83 #ifndef __HAVE_ARCH_STRCSPN
84 /**
85  * strcspn() - find span of string without given characters
86  *
87  * Calculates the length of the initial segment of @s which consists entirely
88  * of bsytes not in reject.
89  *
90  * @s: string to search
91  * @reject: strings which cause the search to halt
92  * @return number of characters at the start of @s which are not in @reject
93  */
94 size_t strcspn(const char *s, const char *reject);
95 #endif
96 
97 #ifdef CONFIG_SANDBOX
98 # define strdup		sandbox_strdup
99 # define strndup		sandbox_strndup
100 #endif
101 
102 #ifndef __HAVE_ARCH_STRDUP
103 extern char * strdup(const char *);
104 extern char * strndup(const char *, size_t);
105 #endif
106 #ifndef __HAVE_ARCH_STRSWAB
107 extern char * strswab(const char *);
108 #endif
109 
110 #ifndef __HAVE_ARCH_MEMSET
111 extern void * memset(void *,int,__kernel_size_t);
112 #endif
113 #ifndef __HAVE_ARCH_MEMCPY
114 extern void * memcpy(void *,const void *,__kernel_size_t);
115 #endif
116 #ifndef __HAVE_ARCH_MEMMOVE
117 extern void * memmove(void *,const void *,__kernel_size_t);
118 #endif
119 #ifndef __HAVE_ARCH_MEMSCAN
120 extern void * memscan(void *,int,__kernel_size_t);
121 #endif
122 #ifndef __HAVE_ARCH_MEMCMP
123 extern int memcmp(const void *,const void *,__kernel_size_t);
124 #endif
125 #ifndef __HAVE_ARCH_MEMCHR
126 extern void * memchr(const void *,int,__kernel_size_t);
127 #endif
128 #ifndef __HAVE_ARCH_MEMCHR_INV
129 void *memchr_inv(const void *, int, size_t);
130 #endif
131 
132 unsigned long ustrtoul(const char *cp, char **endp, unsigned int base);
133 unsigned long long ustrtoull(const char *cp, char **endp, unsigned int base);
134 
135 #ifdef __cplusplus
136 }
137 #endif
138 
139 #endif /* _LINUX_STRING_H_ */
140