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TOMOYO Linux Cross Reference
Linux/include/linux/string.h

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  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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