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kernel/linux-imx6_3.14.28/include/linux/string.h 4.38 KB
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  #ifndef _LINUX_STRING_H_
  #define _LINUX_STRING_H_
  
  
  #include <linux/compiler.h>	/* for inline */
  #include <linux/types.h>	/* for size_t */
  #include <linux/stddef.h>	/* for NULL */
  #include <stdarg.h>
  #include <uapi/linux/string.h>
  
  extern char *strndup_user(const char __user *, long);
  extern void *memdup_user(const void __user *, size_t);
  
  /*
   * Include machine specific inline routines
   */
  #include <asm/string.h>
  
  #ifndef __HAVE_ARCH_STRCPY
  extern char * strcpy(char *,const char *);
  #endif
  #ifndef __HAVE_ARCH_STRNCPY
  extern char * strncpy(char *,const char *, __kernel_size_t);
  #endif
  #ifndef __HAVE_ARCH_STRLCPY
  size_t strlcpy(char *, const char *, size_t);
  #endif
  #ifndef __HAVE_ARCH_STRCAT
  extern char * strcat(char *, const char *);
  #endif
  #ifndef __HAVE_ARCH_STRNCAT
  extern char * strncat(char *, const char *, __kernel_size_t);
  #endif
  #ifndef __HAVE_ARCH_STRLCAT
  extern size_t strlcat(char *, const char *, __kernel_size_t);
  #endif
  #ifndef __HAVE_ARCH_STRCMP
  extern int strcmp(const char *,const char *);
  #endif
  #ifndef __HAVE_ARCH_STRNCMP
  extern int strncmp(const char *,const char *,__kernel_size_t);
  #endif
  #ifndef __HAVE_ARCH_STRNICMP
  extern int strnicmp(const char *, const char *, __kernel_size_t);
  #endif
  #ifndef __HAVE_ARCH_STRCASECMP
  extern int strcasecmp(const char *s1, const char *s2);
  #endif
  #ifndef __HAVE_ARCH_STRNCASECMP
  extern int strncasecmp(const char *s1, const char *s2, size_t n);
  #endif
  #ifndef __HAVE_ARCH_STRCHR
  extern char * strchr(const char *,int);
  #endif
  #ifndef __HAVE_ARCH_STRNCHR
  extern char * strnchr(const char *, size_t, int);
  #endif
  #ifndef __HAVE_ARCH_STRRCHR
  extern char * strrchr(const char *,int);
  #endif
  extern char * __must_check skip_spaces(const char *);
  
  extern char *strim(char *);
  
  static inline __must_check char *strstrip(char *str)
  {
  	return strim(str);
  }
  
  #ifndef __HAVE_ARCH_STRSTR
  extern char * strstr(const char *, const char *);
  #endif
  #ifndef __HAVE_ARCH_STRNSTR
  extern char * strnstr(const char *, const char *, size_t);
  #endif
  #ifndef __HAVE_ARCH_STRLEN
  extern __kernel_size_t strlen(const char *);
  #endif
  #ifndef __HAVE_ARCH_STRNLEN
  extern __kernel_size_t strnlen(const char *,__kernel_size_t);
  #endif
  #ifndef __HAVE_ARCH_STRPBRK
  extern char * strpbrk(const char *,const char *);
  #endif
  #ifndef __HAVE_ARCH_STRSEP
  extern char * strsep(char **,const char *);
  #endif
  #ifndef __HAVE_ARCH_STRSPN
  extern __kernel_size_t strspn(const char *,const char *);
  #endif
  #ifndef __HAVE_ARCH_STRCSPN
  extern __kernel_size_t strcspn(const char *,const char *);
  #endif
  
  #ifndef __HAVE_ARCH_MEMSET
  extern void * memset(void *,int,__kernel_size_t);
  #endif
  #ifndef __HAVE_ARCH_MEMCPY
  extern void * memcpy(void *,const void *,__kernel_size_t);
  #endif
  #ifndef __HAVE_ARCH_MEMMOVE
  extern void * memmove(void *,const void *,__kernel_size_t);
  #endif
  #ifndef __HAVE_ARCH_MEMSCAN
  extern void * memscan(void *,int,__kernel_size_t);
  #endif
  #ifndef __HAVE_ARCH_MEMCMP
  extern int memcmp(const void *,const void *,__kernel_size_t);
  #endif
  #ifndef __HAVE_ARCH_MEMCHR
  extern void * memchr(const void *,int,__kernel_size_t);
  #endif
  void *memchr_inv(const void *s, int c, size_t n);
  
  extern char *kstrdup(const char *s, gfp_t gfp);
  extern char *kstrndup(const char *s, size_t len, gfp_t gfp);
  extern void *kmemdup(const void *src, size_t len, gfp_t gfp);
  
  extern char **argv_split(gfp_t gfp, const char *str, int *argcp);
  extern void argv_free(char **argv);
  
  extern bool sysfs_streq(const char *s1, const char *s2);
  extern int strtobool(const char *s, bool *res);
  
  #ifdef CONFIG_BINARY_PRINTF
  int vbin_printf(u32 *bin_buf, size_t size, const char *fmt, va_list args);
  int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf);
  int bprintf(u32 *bin_buf, size_t size, const char *fmt, ...) __printf(3, 4);
  #endif
  
  extern ssize_t memory_read_from_buffer(void *to, size_t count, loff_t *ppos,
  				       const void *from, size_t available);
  
  /**
   * strstarts - does @str start with @prefix?
   * @str: string to examine
   * @prefix: prefix to look for.
   */
  static inline bool strstarts(const char *str, const char *prefix)
  {
  	return strncmp(str, prefix, strlen(prefix)) == 0;
  }
  
  size_t memweight(const void *ptr, size_t bytes);
  void memzero_explicit(void *s, size_t count);
  
  /**
   * kbasename - return the last part of a pathname.
   *
   * @path: path to extract the filename from.
   */
  static inline const char *kbasename(const char *path)
  {
  	const char *tail = strrchr(path, '/');
  	return tail ? tail + 1 : path;
  }
  
  #endif /* _LINUX_STRING_H_ */