| 1 | /*
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| 2 | Unix SMB/CIFS implementation.
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| 3 |
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| 4 | macros to go along with the lib/replace/ portability layer code
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| 5 |
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| 6 | Copyright (C) Andrew Tridgell 2005
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| 7 | Copyright (C) Jelmer Vernooij 2006
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| 8 |
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| 9 | ** NOTE! The following LGPL license applies to the replace
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| 10 | ** library. This does NOT imply that all of Samba is released
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| 11 | ** under the LGPL
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| 12 |
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| 13 | This library is free software; you can redistribute it and/or
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| 14 | modify it under the terms of the GNU Lesser General Public
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| 15 | License as published by the Free Software Foundation; either
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| 16 | version 2 of the License, or (at your option) any later version.
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| 17 |
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| 18 | This library is distributed in the hope that it will be useful,
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| 19 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 21 | Lesser General Public License for more details.
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| 22 |
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| 23 | You should have received a copy of the GNU Lesser General Public
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| 24 | License along with this library; if not, write to the Free Software
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| 25 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 26 | */
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| 27 |
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| 28 | #ifndef _LIBREPLACE_REPLACE_H
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| 29 | #define _LIBREPLACE_REPLACE_H
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| 30 |
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| 31 | #ifndef NO_CONFIG_H
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| 32 | #include "config.h"
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| 33 | #endif
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| 34 |
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| 35 | #ifdef HAVE_STANDARDS_H
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| 36 | #include <standards.h>
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| 37 | #endif
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| 38 |
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| 39 | #include <stdio.h>
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| 40 | #include <stdlib.h>
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| 41 | #include <stdarg.h>
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| 42 | #include <errno.h>
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| 43 |
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| 44 | #if defined(_MSC_VER) || defined(__MINGW32__)
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| 45 | #include "win32_replace.h"
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| 46 | #endif
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| 47 |
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| 48 | #ifdef __COMPAR_FN_T
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| 49 | #define QSORT_CAST (__compar_fn_t)
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| 50 | #endif
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| 51 |
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| 52 | #ifndef QSORT_CAST
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| 53 | #define QSORT_CAST (int (*)(const void *, const void *))
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| 54 | #endif
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| 55 |
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| 56 | #ifdef HAVE_STDINT_H
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| 57 | #include <stdint.h>
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| 58 | /* force off HAVE_INTTYPES_H so that roken doesn't try to include both,
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| 59 | which causes a warning storm on irix */
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| 60 | #undef HAVE_INTTYPES_H
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| 61 | #elif HAVE_INTTYPES_H
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| 62 | #include <inttypes.h>
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| 63 | #endif
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| 64 |
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| 65 | #ifdef HAVE_STRING_H
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| 66 | #include <string.h>
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| 67 | #endif
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| 68 |
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| 69 | #ifdef HAVE_STRINGS_H
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| 70 | #include <strings.h>
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| 71 | #endif
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| 72 |
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| 73 | #ifdef HAVE_SYS_TYPES_H
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| 74 | #include <sys/types.h>
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| 75 | #endif
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| 76 |
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| 77 | #if STDC_HEADERS
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| 78 | #include <stdlib.h>
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| 79 | #include <stddef.h>
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| 80 | #endif
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| 81 |
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| 82 | #if !defined(HAVE_VOLATILE)
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| 83 | #define volatile
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| 84 | #endif
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| 85 |
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| 86 | /**
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| 87 | this is a warning hack. The idea is to use this everywhere that we
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| 88 | get the "discarding const" warning from gcc. That doesn't actually
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| 89 | fix the problem of course, but it means that when we do get to
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| 90 | cleaning them up we can do it by searching the code for
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| 91 | discard_const.
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| 92 |
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| 93 | It also means that other error types aren't as swamped by the noise
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| 94 | of hundreds of const warnings, so we are more likely to notice when
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| 95 | we get new errors.
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| 96 |
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| 97 | Please only add more uses of this macro when you find it
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| 98 | _really_ hard to fix const warnings. Our aim is to eventually use
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| 99 | this function in only a very few places.
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| 100 |
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| 101 | Also, please call this via the discard_const_p() macro interface, as that
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| 102 | makes the return type safe.
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| 103 | */
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| 104 | #define discard_const(ptr) ((void *)((intptr_t)(ptr)))
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| 105 |
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| 106 | /** Type-safe version of discard_const */
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| 107 | #define discard_const_p(type, ptr) ((type *)discard_const(ptr))
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| 108 |
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| 109 | #ifndef HAVE_STRERROR
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| 110 | extern char *sys_errlist[];
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| 111 | #define strerror(i) sys_errlist[i]
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| 112 | #endif
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| 113 |
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| 114 | #ifndef HAVE_ERRNO_DECL
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| 115 | extern int errno;
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| 116 | #endif
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| 117 |
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| 118 | #ifndef HAVE_STRDUP
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| 119 | #define strdup rep_strdup
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| 120 | char *rep_strdup(const char *s);
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| 121 | #endif
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| 122 |
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| 123 | #ifndef HAVE_MEMMOVE
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| 124 | #define memmove rep_memmove
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| 125 | void *rep_memmove(void *dest,const void *src,int size);
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| 126 | #endif
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| 127 |
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| 128 | #if !defined(HAVE_MKTIME) || !defined(HAVE_TIMEGM)
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| 129 | #include "system/time.h"
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| 130 | #endif
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| 131 |
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| 132 | #ifndef HAVE_MKTIME
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| 133 | #define mktime rep_mktime
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| 134 | time_t rep_mktime(struct tm *t);
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| 135 | #endif
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| 136 |
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| 137 | #ifndef HAVE_TIMEGM
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| 138 | struct tm;
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| 139 | #define timegm rep_timegm
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| 140 | time_t rep_timegm(struct tm *tm);
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| 141 | #endif
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| 142 |
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| 143 | #ifndef HAVE_STRLCPY
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| 144 | #define strlcpy rep_strlcpy
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| 145 | size_t rep_strlcpy(char *d, const char *s, size_t bufsize);
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| 146 | #endif
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| 147 |
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| 148 | #ifndef HAVE_STRLCAT
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| 149 | #define strlcat rep_strlcat
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| 150 | size_t rep_strlcat(char *d, const char *s, size_t bufsize);
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| 151 | #endif
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| 152 |
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| 153 | #if (defined(BROKEN_STRNDUP) || !defined(HAVE_STRNDUP))
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| 154 | #undef HAVE_STRNDUP
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| 155 | #define strndup rep_strndup
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| 156 | char *rep_strndup(const char *s, size_t n);
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| 157 | #endif
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| 158 |
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| 159 | #if (defined(BROKEN_STRNLEN) || !defined(HAVE_STRNLEN))
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| 160 | #undef HAVE_STRNLEN
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| 161 | #define strnlen rep_strnlen
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| 162 | size_t rep_strnlen(const char *s, size_t n);
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| 163 | #endif
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| 164 |
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| 165 | #ifndef HAVE_SETENV
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| 166 | #define setenv rep_setenv
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| 167 | int rep_setenv(const char *name, const char *value, int overwrite);
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| 168 | #else
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| 169 | #ifndef HAVE_SETENV_DECL
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| 170 | int setenv(const char *name, const char *value, int overwrite);
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| 171 | #endif
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| 172 | #endif
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| 173 |
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| 174 | #ifndef HAVE_UNSETENV
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| 175 | #define unsetenv rep_unsetenv
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| 176 | int rep_unsetenv(const char *name);
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| 177 | #endif
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| 178 |
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| 179 | #ifndef HAVE_SETEUID
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| 180 | #define seteuid rep_seteuid
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| 181 | int rep_seteuid(uid_t);
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| 182 | #endif
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| 183 |
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| 184 | #ifndef HAVE_SETEGID
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| 185 | #define setegid rep_setegid
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| 186 | int rep_setegid(gid_t);
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| 187 | #endif
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| 188 |
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| 189 | #ifndef HAVE_SETLINEBUF
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| 190 | #define setlinebuf rep_setlinebuf
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| 191 | void rep_setlinebuf(FILE *);
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| 192 | #endif
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| 193 |
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| 194 | #ifndef HAVE_STRCASESTR
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| 195 | #define strcasestr rep_strcasestr
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| 196 | char *rep_strcasestr(const char *haystack, const char *needle);
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| 197 | #endif
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| 198 |
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| 199 | #ifndef HAVE_STRTOK_R
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| 200 | #define strtok_r rep_strtok_r
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| 201 | char *rep_strtok_r(char *s, const char *delim, char **save_ptr);
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| 202 | #endif
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| 203 |
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| 204 | #ifndef HAVE_STRTOLL
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| 205 | #define strtoll rep_strtoll
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| 206 | long long int rep_strtoll(const char *str, char **endptr, int base);
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| 207 | #endif
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| 208 |
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| 209 | #ifndef HAVE_STRTOULL
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| 210 | #define strtoull rep_strtoull
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| 211 | unsigned long long int rep_strtoull(const char *str, char **endptr, int base);
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| 212 | #endif
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| 213 |
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| 214 | #ifndef HAVE_FTRUNCATE
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| 215 | #define ftruncate rep_ftruncate
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| 216 | int rep_ftruncate(int,off_t);
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| 217 | #endif
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| 218 |
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| 219 | #ifndef HAVE_INITGROUPS
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| 220 | #define initgroups rep_initgroups
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| 221 | int rep_initgroups(char *name, gid_t id);
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| 222 | #endif
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| 223 |
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| 224 | #if !defined(HAVE_BZERO) && defined(HAVE_MEMSET)
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| 225 | #define bzero(a,b) memset((a),'\0',(b))
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| 226 | #endif
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| 227 |
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| 228 | #ifndef HAVE_DLERROR
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| 229 | #define dlerror rep_dlerror
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| 230 | char *rep_dlerror(void);
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| 231 | #endif
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| 232 |
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| 233 | #ifndef HAVE_DLOPEN
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| 234 | #define dlopen rep_dlopen
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| 235 | void *rep_dlopen(const char *name, int flags);
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| 236 | #endif
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| 237 |
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| 238 | #ifndef HAVE_DLSYM
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| 239 | #define dlsym rep_dlsym
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| 240 | void *rep_dlsym(void *handle, const char *symbol);
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| 241 | #endif
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| 242 |
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| 243 | #ifndef HAVE_DLCLOSE
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| 244 | #define dlclose rep_dlclose
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| 245 | int rep_dlclose(void *handle);
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| 246 | #endif
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| 247 |
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| 248 | #ifndef HAVE_SOCKETPAIR
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| 249 | #define socketpair rep_socketpair
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| 250 | int rep_socketpair(int d, int type, int protocol, int sv[2]);
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| 251 | #endif
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| 252 |
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| 253 | #ifndef PRINTF_ATTRIBUTE
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| 254 | #if (__GNUC__ >= 3) && (__GNUC_MINOR__ >= 1 )
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| 255 | /** Use gcc attribute to check printf fns. a1 is the 1-based index of
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| 256 | * the parameter containing the format, and a2 the index of the first
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| 257 | * argument. Note that some gcc 2.x versions don't handle this
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| 258 | * properly **/
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| 259 | #define PRINTF_ATTRIBUTE(a1, a2) __attribute__ ((format (__printf__, a1, a2)))
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| 260 | #else
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| 261 | #define PRINTF_ATTRIBUTE(a1, a2)
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| 262 | #endif
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| 263 | #endif
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| 264 |
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| 265 | #ifndef HAVE_VASPRINTF
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| 266 | #define vasprintf rep_vasprintf
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| 267 | int rep_vasprintf(char **ptr, const char *format, va_list ap) PRINTF_ATTRIBUTE(2,0);
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| 268 | #endif
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| 269 |
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| 270 | #if !defined(HAVE_SNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
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| 271 | #define snprintf rep_snprintf
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| 272 | int rep_snprintf(char *,size_t ,const char *, ...) PRINTF_ATTRIBUTE(3,4);
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| 273 | #endif
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| 274 |
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| 275 | #if !defined(HAVE_VSNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
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| 276 | #define vsnprintf rep_vsnprintf
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| 277 | int rep_vsnprintf(char *,size_t ,const char *, va_list ap) PRINTF_ATTRIBUTE(3,0);
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| 278 | #endif
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| 279 |
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| 280 | #ifndef HAVE_ASPRINTF
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| 281 | #define asprintf rep_asprintf
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| 282 | int rep_asprintf(char **,const char *, ...) PRINTF_ATTRIBUTE(2,3);
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| 283 | #endif
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| 284 |
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| 285 | #ifndef HAVE_VSYSLOG
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| 286 | #ifdef HAVE_SYSLOG
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| 287 | #define vsyslog rep_vsyslog
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| 288 | void rep_vsyslog (int facility_priority, const char *format, va_list arglist) PRINTF_ATTRIBUTE(2,0);
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| 289 | #endif
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| 290 | #endif
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| 291 |
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| 292 | /* we used to use these fns, but now we have good replacements
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| 293 | for snprintf and vsnprintf */
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| 294 | #define slprintf snprintf
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| 295 |
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| 296 |
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| 297 | #ifndef HAVE_VA_COPY
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| 298 | #undef va_copy
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| 299 | #ifdef HAVE___VA_COPY
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| 300 | #define va_copy(dest, src) __va_copy(dest, src)
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| 301 | #else
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| 302 | #define va_copy(dest, src) (dest) = (src)
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| 303 | #endif
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| 304 | #endif
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| 305 |
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| 306 | #ifndef HAVE_VOLATILE
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| 307 | #define volatile
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| 308 | #endif
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| 309 |
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| 310 | #ifndef HAVE_COMPARISON_FN_T
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| 311 | typedef int (*comparison_fn_t)(const void *, const void *);
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| 312 | #endif
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| 313 |
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| 314 | #ifdef REPLACE_STRPTIME
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| 315 | #define strptime rep_strptime
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| 316 | struct tm;
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| 317 | char *rep_strptime(const char *buf, const char *format, struct tm *tm);
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| 318 | #endif
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| 319 |
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| 320 | /* Load header file for dynamic linking stuff */
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| 321 | #ifdef HAVE_DLFCN_H
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| 322 | #include <dlfcn.h>
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| 323 | #endif
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| 324 |
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| 325 | #ifndef RTLD_LAZY
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| 326 | #define RTLD_LAZY 0
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| 327 | #endif
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| 328 |
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| 329 | #ifndef HAVE_SECURE_MKSTEMP
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| 330 | #define mkstemp(path) rep_mkstemp(path)
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| 331 | int rep_mkstemp(char *temp);
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| 332 | #endif
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| 333 |
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| 334 | #ifndef HAVE_MKDTEMP
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| 335 | #define mkdtemp rep_mkdtemp
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| 336 | char *rep_mkdtemp(char *template);
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| 337 | #endif
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| 338 |
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| 339 | #ifdef HAVE_LIMITS_H
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| 340 | #include <limits.h>
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| 341 | #endif
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| 342 |
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| 343 | /* The extra casts work around common compiler bugs. */
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| 344 | #define _TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
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| 345 | /* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
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| 346 | It is necessary at least when t == time_t. */
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| 347 | #define _TYPE_MINIMUM(t) ((t) (_TYPE_SIGNED (t) \
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| 348 | ? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) : (t) 0))
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| 349 | #define _TYPE_MAXIMUM(t) ((t) (~ (t) 0 - _TYPE_MINIMUM (t)))
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| 350 |
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| 351 | #ifndef HOST_NAME_MAX
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| 352 | #define HOST_NAME_MAX 64
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| 353 | #endif
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| 354 |
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| 355 | #ifndef UINT16_MAX
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| 356 | #define UINT16_MAX 65535
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| 357 | #endif
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| 358 |
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| 359 | #ifndef UINT32_MAX
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| 360 | #define UINT32_MAX (4294967295U)
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| 361 | #endif
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| 362 |
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| 363 | #ifndef UINT64_MAX
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| 364 | #define UINT64_MAX ((uint64_t)-1)
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| 365 | #endif
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| 366 |
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| 367 | #ifndef CHAR_BIT
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| 368 | #define CHAR_BIT 8
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| 369 | #endif
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| 370 |
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| 371 | #ifndef INT32_MAX
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| 372 | #define INT32_MAX _TYPE_MAXIMUM(int32_t)
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| 373 | #endif
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| 374 |
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| 375 | #ifdef HAVE_STDBOOL_H
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| 376 | #include <stdbool.h>
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| 377 | #endif
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| 378 |
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| 379 | #if !defined(HAVE_BOOL)
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| 380 | #ifdef HAVE__Bool
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| 381 | #define bool _Bool
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| 382 | #else
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| 383 | typedef int bool;
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| 384 | #endif
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| 385 | #endif
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| 386 |
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| 387 | /*
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| 388 | * to prevent <rpcsvc/yp_prot.h> from doing a redefine of 'bool'
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| 389 | *
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| 390 | * IRIX, HPUX, MacOS 10 and Solaris need BOOL_DEFINED
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| 391 | * Tru64 needs _BOOL_EXISTS
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| 392 | * AIX needs _BOOL,_TRUE,_FALSE
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| 393 | */
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| 394 | #ifndef BOOL_DEFINED
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| 395 | #define BOOL_DEFINED
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| 396 | #endif
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| 397 | #ifndef _BOOL_EXISTS
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| 398 | #define _BOOL_EXISTS
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| 399 | #endif
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| 400 | #ifndef _BOOL
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| 401 | #define _BOOL
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| 402 | #endif
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| 403 |
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| 404 | #ifndef __bool_true_false_are_defined
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| 405 | #define __bool_true_false_are_defined
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| 406 | #endif
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| 407 |
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| 408 | #ifndef true
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| 409 | #define true (1)
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| 410 | #endif
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| 411 | #ifndef false
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| 412 | #define false (0)
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| 413 | #endif
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| 414 |
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| 415 | #ifndef _TRUE
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|---|
| 416 | #define _TRUE true
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|---|
| 417 | #endif
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|---|
| 418 | #ifndef _FALSE
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|---|
| 419 | #define _FALSE false
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| 420 | #endif
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| 421 |
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| 422 | #ifndef HAVE_FUNCTION_MACRO
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| 423 | #ifdef HAVE_func_MACRO
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|---|
| 424 | #define __FUNCTION__ __func__
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|---|
| 425 | #else
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|---|
| 426 | #define __FUNCTION__ ("")
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|---|
| 427 | #endif
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| 428 | #endif
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| 429 |
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| 430 | #ifdef HAVE_SYS_PARAM_H
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| 431 | #include <sys/param.h>
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| 432 | #endif
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| 433 |
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| 434 | #ifndef MIN
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| 435 | #define MIN(a,b) ((a)<(b)?(a):(b))
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| 436 | #endif
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| 437 |
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| 438 | #ifndef MAX
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| 439 | #define MAX(a,b) ((a)>(b)?(a):(b))
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| 440 | #endif
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| 441 |
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| 442 | #ifndef __STRING
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| 443 | #define __STRING(x) #x
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| 444 | #endif
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| 445 |
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| 446 | #ifndef _STRINGSTRING
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| 447 | #define __STRINGSTRING(x) __STRING(x)
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| 448 | #endif
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| 449 |
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| 450 | #ifndef __LINESTR__
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| 451 | #define __LINESTR__ __STRINGSTRING(__LINE__)
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| 452 | #endif
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| 453 |
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| 454 | #ifndef __location__
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| 455 | #define __location__ __FILE__ ":" __LINESTR__
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| 456 | #endif
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| 457 |
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| 458 | /**
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| 459 | * zero a structure
|
|---|
| 460 | */
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| 461 | #define ZERO_STRUCT(x) memset((char *)&(x), 0, sizeof(x))
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| 462 |
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| 463 | /**
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| 464 | * zero a structure given a pointer to the structure
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| 465 | */
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| 466 | #define ZERO_STRUCTP(x) do { if ((x) != NULL) memset((char *)(x), 0, sizeof(*(x))); } while(0)
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| 467 |
|
|---|
| 468 | /**
|
|---|
| 469 | * zero a structure given a pointer to the structure - no zero check
|
|---|
| 470 | */
|
|---|
| 471 | #define ZERO_STRUCTPN(x) memset((char *)(x), 0, sizeof(*(x)))
|
|---|
| 472 |
|
|---|
| 473 | /* zero an array - note that sizeof(array) must work - ie. it must not be a
|
|---|
| 474 | pointer */
|
|---|
| 475 | #define ZERO_ARRAY(x) memset((char *)(x), 0, sizeof(x))
|
|---|
| 476 |
|
|---|
| 477 | /**
|
|---|
| 478 | * work out how many elements there are in a static array
|
|---|
| 479 | */
|
|---|
| 480 | #define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
|
|---|
| 481 |
|
|---|
| 482 | /**
|
|---|
| 483 | * pointer difference macro
|
|---|
| 484 | */
|
|---|
| 485 | #define PTR_DIFF(p1,p2) ((ptrdiff_t)(((const char *)(p1)) - (const char *)(p2)))
|
|---|
| 486 |
|
|---|
| 487 | #if MMAP_BLACKLIST
|
|---|
| 488 | #undef HAVE_MMAP
|
|---|
| 489 | #endif
|
|---|
| 490 |
|
|---|
| 491 | #endif /* _LIBREPLACE_REPLACE_H */
|
|---|
