src/osdep/stub.h

   1 #ifndef EL__OSDEP_STUB_H
   2 #define EL__OSDEP_STUB_H
   3
   4 #include <ctype.h>
   5 #include <string.h>
   6
   7 #if 0
   8 #ifdef CONFIG_DEBUG
   9 #define CONFIG_OWN_LIBC
  10 #endif
  11 #endif
  12
  13 #ifdef CONFIG_OWN_LIBC
  14
  15 #undef HAVE_BCOPY /* prevent using bcopy() stub for memmove() */
  16 #undef HAVE_ISDIGIT
  17 #undef HAVE_MEMMOVE
  18 #undef HAVE_MEMPCPY
  19 #undef HAVE_RAISE
  20 #undef HAVE_STPCPY
  21 #undef HAVE_STRCASECMP
  22 #undef HAVE_STRCASESTR
  23 #undef HAVE_STRDUP
  24 #undef HAVE_STRERROR
  25 #undef HAVE_STRNCASECMP
  26 #undef HAVE_STRSTR
  27 #undef HAVE_INET_NTOP
  28
  29 #endif /* CONFIG_OWN_LIBC */
  30
  31
  32 /* These stubs are exception to our "Use (unsigned char *)!" rule. This is
  33  * because the stubbed functions are defined using (char *), and we could get
  34  * in trouble with this. Or when you use (foo ? strstr() : strcasestr()) and
  35  * one of these is system and another stub, we're in trouble and get "Pointer
  36  * type mismatch in conditional expression", game over. */
  37
  38
  39 /** strchr() */
  40
  41 #ifndef HAVE_STRCHR
  42 #ifdef HAVE_INDEX /* for old BSD systems. */
  43
  44 #undef strchr
  45 #define strchr(a, b) index(a, b)
  46 #undef strrchr
  47 #define strrchr(a, b) rindex(a, b)
  48
  49 #else /* ! HAVE_INDEX */
  50 # error You have neither strchr() nor index() function. Please go upgrade your system.
  51 #endif /* HAVE_INDEX */
  52 #endif /* HAVE_STRCHR */
  53
  54 #ifndef HAVE_ISDIGIT
  55 #undef isdigit
  56 #define isdigit(a) elinks_isdigit(a)
  57 int elinks_isdigit(int);
  58 #endif
  59
  60 /** strerror() */
  61 #ifndef HAVE_STRERROR
  62 #undef strerror
  63 #define strerror(e) elinks_strerror(e)
  64 const char *elinks_strerror(int);
  65 #endif
  66
  67 /** strstr() */
  68 #ifndef HAVE_STRSTR
  69 #undef strstr
  70 #define strstr(a, b) elinks_strstr(a, b)
  71 char *elinks_strstr(const char *, const char *);
  72 #endif
  73
  74 /** memmove() */
  75 #ifndef HAVE_MEMMOVE
  76 #ifdef HAVE_BCOPY
  77 # define memmove(dst, src, n) bcopy(src, dst, n)
  78 #else
  79 #undef memmove
  80 #define memmove(dst, src, n) elinks_memmove(dst, src, n)
  81 void *elinks_memmove(void *, const void *, size_t);
  82 #endif
  83 #endif
  84
  85 /** strcasecmp() */
  86 #ifndef HAVE_STRCASECMP
  87 #undef strcasecmp
  88 #define strcasecmp(a, b) elinks_strcasecmp(a, b)
  89 int elinks_strcasecmp(const char *, const char *);
  90 #endif
  91
  92 /** strncasecmp() */
  93 #ifndef HAVE_STRNCASECMP
  94 #undef strncasecmp
  95 #define strncasecmp(a, b, l) elinks_strncasecmp(a, b, l)
  96 int elinks_strncasecmp(const char *, const char *, size_t);
  97 #endif
  98
  99 /** strcasestr() */
 100 #ifndef HAVE_STRCASESTR
 101 #undef strcasestr
 102 #define strcasestr(a, b) elinks_strcasestr(a, b)
 103 char *elinks_strcasestr(const char *, const char *);
 104 #endif
 105
 106 /** strdup() */
 107 #ifndef HAVE_STRDUP
 108 #undef strdup
 109 #define strdup(s) elinks_strdup(s)
 110 char *elinks_strdup(const char *);
 111 #endif
 112
 113 /* stpcpy() */
 114 #ifndef HAVE_STPCPY
 115 #undef stpcpy
 116 #define stpcpy(d, s) elinks_stpcpy(d, s)
 117 char *elinks_stpcpy(char *, const char *);
 118 #endif
 119
 120 /* mempcpy() */
 121 #ifndef HAVE_MEMPCPY
 122 #undef mempcpy
 123 #define mempcpy(dest, src, n) elinks_mempcpy(dest, src, n)
 124 void *elinks_mempcpy(void *, const void *, size_t);
 125 #endif
 126
 127 /* memrchr() */
 128 #ifndef HAVE_MEMRCHR
 129 #undef memrchr
 130 #define memrchr(src, c, n) elinks_memrchr(src, c, n)
 131 void *elinks_memrchr(const void *s, int c, size_t n);
 132 #endif
 133
 134 /* raise() */
 135 #ifndef HAVE_RAISE
 136 #undef raise
 137 #define raise(signal) elinks_raise(signal)
 138 int elinks_raise(int signal);
 139 #endif
 140
 141 /* inet_ntop() */
 142 #ifndef HAVE_INET_NTOP
 143 #undef inet_ntop
 144 #define inet_ntop(af, src, dst, size) elinks_inet_ntop(af, src, dst, size)
 145 const char *elinks_inet_ntop(int af, const void *src, char *dst, size_t size);
 146 #endif
 147
 148 /* Silence various sparse warnings. */
 149
 150 #ifndef __builtin_stpcpy
 151 extern char *__builtin_stpcpy(char *dest, const char *src);
 152 #endif
 153
 154 #ifndef __builtin_mempcpy
 155 extern void *__builtin_mempcpy(void *dest, const void *src, size_t n);
 156 #endif
 157
 158 #if 0
 159 #ifndef __builtin_va_copy
 160 #define __builtin_va_copy(dest, src) do { dest = src; } while (0)
 161 #endif
 162 #endif
 163
 164 #endif