s4-ldb: update dlinklist.h to match main copy (lib/util/dlinklist.h)
[Samba.git] / lib / replace / replace.h
blob2db6aa1226cbe796666371151dc89d7656bac78e
1 /*
2 Unix SMB/CIFS implementation.
4 macros to go along with the lib/replace/ portability layer code
6 Copyright (C) Andrew Tridgell 2005
7 Copyright (C) Jelmer Vernooij 2006-2008
8 Copyright (C) Jeremy Allison 2007.
10 ** NOTE! The following LGPL license applies to the replace
11 ** library. This does NOT imply that all of Samba is released
12 ** under the LGPL
14 This library is free software; you can redistribute it and/or
15 modify it under the terms of the GNU Lesser General Public
16 License as published by the Free Software Foundation; either
17 version 3 of the License, or (at your option) any later version.
19 This library is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 Lesser General Public License for more details.
24 You should have received a copy of the GNU Lesser General Public
25 License along with this library; if not, see <http://www.gnu.org/licenses/>.
28 #ifndef _LIBREPLACE_REPLACE_H
29 #define _LIBREPLACE_REPLACE_H
31 #ifndef NO_CONFIG_H
32 #include "config.h"
33 #endif
35 #ifdef HAVE_STANDARDS_H
36 #include <standards.h>
37 #endif
39 #include <stdio.h>
40 #include <stdlib.h>
41 #include <stdarg.h>
42 #include <errno.h>
44 #if defined(_MSC_VER) || defined(__MINGW32__)
45 #include "win32_replace.h"
46 #endif
49 #ifdef HAVE_STDINT_H
50 #include <stdint.h>
51 /* force off HAVE_INTTYPES_H so that roken doesn't try to include both,
52 which causes a warning storm on irix */
53 #undef HAVE_INTTYPES_H
54 #elif HAVE_INTTYPES_H
55 #define __STDC_FORMAT_MACROS
56 #include <inttypes.h>
57 #endif
59 #ifndef __PRI64_PREFIX
60 # if __WORDSIZE == 64
61 # define __PRI64_PREFIX "l"
62 # else
63 # define __PRI64_PREFIX "ll"
64 # endif
65 #endif
67 /* Decimal notation. */
68 #ifndef PRId8
69 # define PRId8 "d"
70 #endif
71 #ifndef PRId16
72 # define PRId16 "d"
73 #endif
74 #ifndef PRId32
75 # define PRId32 "d"
76 #endif
77 #ifndef PRId64
78 # define PRId64 __PRI64_PREFIX "d"
79 #endif
81 #ifndef PRIi8
82 # define PRIi8 "i"
83 #endif
84 #ifndef PRIi8
85 # define PRIi16 "i"
86 #endif
87 #ifndef PRIi8
88 # define PRIi32 "i"
89 #endif
90 #ifndef PRIi8
91 # define PRIi64 __PRI64_PREFIX "i"
92 #endif
94 #ifndef PRIu8
95 # define PRIu8 "u"
96 #endif
97 #ifndef PRIu16
98 # define PRIu16 "u"
99 #endif
100 #ifndef PRIu32
101 # define PRIu32 "u"
102 #endif
103 #ifndef PRIu64
104 # define PRIu64 __PRI64_PREFIX "u"
105 #endif
107 #ifdef HAVE_STRING_H
108 #include <string.h>
109 #endif
111 #ifdef HAVE_STRINGS_H
112 #include <strings.h>
113 #endif
115 #ifdef HAVE_SYS_TYPES_H
116 #include <sys/types.h>
117 #endif
119 #if STDC_HEADERS
120 #include <stdlib.h>
121 #include <stddef.h>
122 #endif
124 #ifndef HAVE_STRERROR
125 extern char *sys_errlist[];
126 #define strerror(i) sys_errlist[i]
127 #endif
129 #ifndef HAVE_ERRNO_DECL
130 extern int errno;
131 #endif
133 #ifndef HAVE_STRDUP
134 #define strdup rep_strdup
135 char *rep_strdup(const char *s);
136 #endif
138 #ifndef HAVE_MEMMOVE
139 #define memmove rep_memmove
140 void *rep_memmove(void *dest,const void *src,int size);
141 #endif
143 #ifndef HAVE_MKTIME
144 #define mktime rep_mktime
145 /* prototype is in "system/time.h" */
146 #endif
148 #ifndef HAVE_TIMEGM
149 #define timegm rep_timegm
150 /* prototype is in "system/time.h" */
151 #endif
153 #ifndef HAVE_UTIME
154 #define utime rep_utime
155 /* prototype is in "system/time.h" */
156 #endif
158 #ifndef HAVE_UTIMES
159 #define utimes rep_utimes
160 /* prototype is in "system/time.h" */
161 #endif
163 #ifndef HAVE_STRLCPY
164 #define strlcpy rep_strlcpy
165 size_t rep_strlcpy(char *d, const char *s, size_t bufsize);
166 #endif
168 #ifndef HAVE_STRLCAT
169 #define strlcat rep_strlcat
170 size_t rep_strlcat(char *d, const char *s, size_t bufsize);
171 #endif
173 #if (defined(BROKEN_STRNDUP) || !defined(HAVE_STRNDUP))
174 #undef HAVE_STRNDUP
175 #define strndup rep_strndup
176 char *rep_strndup(const char *s, size_t n);
177 #endif
179 #if (defined(BROKEN_STRNLEN) || !defined(HAVE_STRNLEN))
180 #undef HAVE_STRNLEN
181 #define strnlen rep_strnlen
182 size_t rep_strnlen(const char *s, size_t n);
183 #endif
185 #if !HAVE_DECL_ENVIRON
186 #ifdef __APPLE__
187 #include <crt_externs.h>
188 #define environ (*_NSGetEnviron())
189 #else
190 extern char **environ;
191 #endif
192 #endif
194 #ifndef HAVE_SETENV
195 #define setenv rep_setenv
196 int rep_setenv(const char *name, const char *value, int overwrite);
197 #else
198 #ifndef HAVE_SETENV_DECL
199 int setenv(const char *name, const char *value, int overwrite);
200 #endif
201 #endif
203 #ifndef HAVE_UNSETENV
204 #define unsetenv rep_unsetenv
205 int rep_unsetenv(const char *name);
206 #endif
208 #ifndef HAVE_SETEUID
209 #define seteuid rep_seteuid
210 int rep_seteuid(uid_t);
211 #endif
213 #ifndef HAVE_SETEGID
214 #define setegid rep_setegid
215 int rep_setegid(gid_t);
216 #endif
218 #if (defined(USE_SETRESUID) && !defined(HAVE_SETRESUID_DECL))
219 /* stupid glibc */
220 int setresuid(uid_t ruid, uid_t euid, uid_t suid);
221 #endif
222 #if (defined(USE_SETRESUID) && !defined(HAVE_SETRESGID_DECL))
223 int setresgid(gid_t rgid, gid_t egid, gid_t sgid);
224 #endif
226 #ifndef HAVE_CHOWN
227 #define chown rep_chown
228 int rep_chown(const char *path, uid_t uid, gid_t gid);
229 #endif
231 #ifndef HAVE_CHROOT
232 #define chroot rep_chroot
233 int rep_chroot(const char *dirname);
234 #endif
236 #ifndef HAVE_LINK
237 #define link rep_link
238 int rep_link(const char *oldpath, const char *newpath);
239 #endif
241 #ifndef HAVE_READLINK
242 #define readlink rep_readlink
243 ssize_t rep_readlink(const char *path, char *buf, size_t bufsize);
244 #endif
246 #ifndef HAVE_SYMLINK
247 #define symlink rep_symlink
248 int rep_symlink(const char *oldpath, const char *newpath);
249 #endif
251 #ifndef HAVE_REALPATH
252 #define realpath rep_realpath
253 char *rep_realpath(const char *path, char *resolved_path);
254 #endif
256 #ifndef HAVE_LCHOWN
257 #define lchown rep_lchown
258 int rep_lchown(const char *fname,uid_t uid,gid_t gid);
259 #endif
261 #ifdef HAVE_UNIX_H
262 #include <unix.h>
263 #endif
265 #ifndef HAVE_SETLINEBUF
266 #define setlinebuf rep_setlinebuf
267 void rep_setlinebuf(FILE *);
268 #endif
270 #ifndef HAVE_STRCASESTR
271 #define strcasestr rep_strcasestr
272 char *rep_strcasestr(const char *haystack, const char *needle);
273 #endif
275 #ifndef HAVE_STRTOK_R
276 #define strtok_r rep_strtok_r
277 char *rep_strtok_r(char *s, const char *delim, char **save_ptr);
278 #endif
280 #ifndef HAVE_STRTOLL
281 #define strtoll rep_strtoll
282 long long int rep_strtoll(const char *str, char **endptr, int base);
283 #endif
285 #ifndef HAVE_STRTOULL
286 #define strtoull rep_strtoull
287 unsigned long long int rep_strtoull(const char *str, char **endptr, int base);
288 #endif
290 #ifndef HAVE_FTRUNCATE
291 #define ftruncate rep_ftruncate
292 int rep_ftruncate(int,off_t);
293 #endif
295 #ifndef HAVE_INITGROUPS
296 #define initgroups rep_initgroups
297 int rep_initgroups(char *name, gid_t id);
298 #endif
300 #if !defined(HAVE_BZERO) && defined(HAVE_MEMSET)
301 #define bzero(a,b) memset((a),'\0',(b))
302 #endif
304 #ifndef HAVE_DLERROR
305 #define dlerror rep_dlerror
306 char *rep_dlerror(void);
307 #endif
309 #ifndef HAVE_DLOPEN
310 #define dlopen rep_dlopen
311 #ifdef DLOPEN_TAKES_UNSIGNED_FLAGS
312 void *rep_dlopen(const char *name, unsigned int flags);
313 #else
314 void *rep_dlopen(const char *name, int flags);
315 #endif
316 #endif
318 #ifndef HAVE_DLSYM
319 #define dlsym rep_dlsym
320 void *rep_dlsym(void *handle, const char *symbol);
321 #endif
323 #ifndef HAVE_DLCLOSE
324 #define dlclose rep_dlclose
325 int rep_dlclose(void *handle);
326 #endif
328 #ifndef HAVE_SOCKETPAIR
329 #define socketpair rep_socketpair
330 /* prototype is in system/network.h */
331 #endif
333 #ifndef PRINTF_ATTRIBUTE
334 #if (__GNUC__ >= 3) && (__GNUC_MINOR__ >= 1 )
335 /** Use gcc attribute to check printf fns. a1 is the 1-based index of
336 * the parameter containing the format, and a2 the index of the first
337 * argument. Note that some gcc 2.x versions don't handle this
338 * properly **/
339 #define PRINTF_ATTRIBUTE(a1, a2) __attribute__ ((format (__printf__, a1, a2)))
340 #else
341 #define PRINTF_ATTRIBUTE(a1, a2)
342 #endif
343 #endif
345 #ifndef _DEPRECATED_
346 #if (__GNUC__ >= 3) && (__GNUC_MINOR__ >= 1 )
347 #define _DEPRECATED_ __attribute__ ((deprecated))
348 #else
349 #define _DEPRECATED_
350 #endif
351 #endif
353 #ifndef HAVE_VASPRINTF
354 #define vasprintf rep_vasprintf
355 int rep_vasprintf(char **ptr, const char *format, va_list ap) PRINTF_ATTRIBUTE(2,0);
356 #endif
358 #if !defined(HAVE_SNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
359 #define snprintf rep_snprintf
360 int rep_snprintf(char *,size_t ,const char *, ...) PRINTF_ATTRIBUTE(3,4);
361 #endif
363 #if !defined(HAVE_VSNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
364 #define vsnprintf rep_vsnprintf
365 int rep_vsnprintf(char *,size_t ,const char *, va_list ap) PRINTF_ATTRIBUTE(3,0);
366 #endif
368 #ifndef HAVE_ASPRINTF
369 #define asprintf rep_asprintf
370 int rep_asprintf(char **,const char *, ...) PRINTF_ATTRIBUTE(2,3);
371 #endif
373 #ifndef HAVE_VSYSLOG
374 #ifdef HAVE_SYSLOG
375 #define vsyslog rep_vsyslog
376 void rep_vsyslog (int facility_priority, const char *format, va_list arglist) PRINTF_ATTRIBUTE(2,0);
377 #endif
378 #endif
380 /* we used to use these fns, but now we have good replacements
381 for snprintf and vsnprintf */
382 #define slprintf snprintf
385 #ifndef HAVE_VA_COPY
386 #undef va_copy
387 #ifdef HAVE___VA_COPY
388 #define va_copy(dest, src) __va_copy(dest, src)
389 #else
390 #define va_copy(dest, src) (dest) = (src)
391 #endif
392 #endif
394 #ifndef HAVE_VOLATILE
395 #define volatile
396 #endif
398 #ifndef HAVE_COMPARISON_FN_T
399 typedef int (*comparison_fn_t)(const void *, const void *);
400 #endif
402 #ifdef REPLACE_STRPTIME
403 #define strptime rep_strptime
404 struct tm;
405 char *rep_strptime(const char *buf, const char *format, struct tm *tm);
406 #endif
408 #ifndef HAVE_DUP2
409 #define dup2 rep_dup2
410 int rep_dup2(int oldfd, int newfd);
411 #endif
413 /* Load header file for dynamic linking stuff */
414 #ifdef HAVE_DLFCN_H
415 #include <dlfcn.h>
416 #endif
418 #ifndef RTLD_LAZY
419 #define RTLD_LAZY 0
420 #endif
421 #ifndef RTLD_NOW
422 #define RTLD_NOW 0
423 #endif
424 #ifndef RTLD_GLOBAL
425 #define RTLD_GLOBAL 0
426 #endif
428 #ifndef HAVE_SECURE_MKSTEMP
429 #define mkstemp(path) rep_mkstemp(path)
430 int rep_mkstemp(char *temp);
431 #endif
433 #ifndef HAVE_MKDTEMP
434 #define mkdtemp rep_mkdtemp
435 char *rep_mkdtemp(char *template);
436 #endif
438 #ifndef HAVE_PREAD
439 #define pread rep_pread
440 ssize_t rep_pread(int __fd, void *__buf, size_t __nbytes, off_t __offset);
441 #define LIBREPLACE_PREAD_REPLACED 1
442 #else
443 #define LIBREPLACE_PREAD_NOT_REPLACED 1
444 #endif
446 #ifndef HAVE_PWRITE
447 #define pwrite rep_pwrite
448 ssize_t rep_pwrite(int __fd, const void *__buf, size_t __nbytes, off_t __offset);
449 #define LIBREPLACE_PWRITE_REPLACED 1
450 #else
451 #define LIBREPLACE_PWRITE_NOT_REPLACED 1
452 #endif
454 #if !defined(HAVE_INET_NTOA) || defined(REPLACE_INET_NTOA)
455 #define inet_ntoa rep_inet_ntoa
456 /* prototype is in "system/network.h" */
457 #endif
459 #ifndef HAVE_INET_PTON
460 #define inet_pton rep_inet_pton
461 /* prototype is in "system/network.h" */
462 #endif
464 #ifndef HAVE_INET_NTOP
465 #define inet_ntop rep_inet_ntop
466 /* prototype is in "system/network.h" */
467 #endif
469 #ifndef HAVE_INET_ATON
470 #define inet_aton rep_inet_aton
471 /* prototype is in "system/network.h" */
472 #endif
474 #ifndef HAVE_CONNECT
475 #define connect rep_connect
476 /* prototype is in "system/network.h" */
477 #endif
479 #ifndef HAVE_GETHOSTBYNAME
480 #define gethostbyname rep_gethostbyname
481 /* prototype is in "system/network.h" */
482 #endif
484 #ifndef HAVE_GETIFADDRS
485 #define getifaddrs rep_getifaddrs
486 /* prototype is in "system/network.h" */
487 #endif
489 #ifndef HAVE_FREEIFADDRS
490 #define freeifaddrs rep_freeifaddrs
491 /* prototype is in "system/network.h" */
492 #endif
494 #ifdef HAVE_LIMITS_H
495 #include <limits.h>
496 #endif
498 #ifdef HAVE_SYS_PARAM_H
499 #include <sys/param.h>
500 #endif
502 /* The extra casts work around common compiler bugs. */
503 #define _TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
504 /* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
505 It is necessary at least when t == time_t. */
506 #define _TYPE_MINIMUM(t) ((t) (_TYPE_SIGNED (t) \
507 ? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) : (t) 0))
508 #define _TYPE_MAXIMUM(t) ((t) (~ (t) 0 - _TYPE_MINIMUM (t)))
510 #ifndef UINT16_MAX
511 #define UINT16_MAX 65535
512 #endif
514 #ifndef UINT32_MAX
515 #define UINT32_MAX (4294967295U)
516 #endif
518 #ifndef UINT64_MAX
519 #define UINT64_MAX ((uint64_t)-1)
520 #endif
522 #ifndef CHAR_BIT
523 #define CHAR_BIT 8
524 #endif
526 #ifndef INT32_MAX
527 #define INT32_MAX _TYPE_MAXIMUM(int32_t)
528 #endif
530 #ifdef HAVE_STDBOOL_H
531 #include <stdbool.h>
532 #endif
534 #if !defined(HAVE_BOOL)
535 #ifdef HAVE__Bool
536 #define bool _Bool
537 #else
538 typedef int bool;
539 #endif
540 #endif
542 #if !defined(HAVE_INTPTR_T)
543 typedef long long intptr_t ;
544 #endif
546 #if !defined(HAVE_UINTPTR_T)
547 typedef unsigned long long uintptr_t ;
548 #endif
550 #if !defined(HAVE_PTRDIFF_T)
551 typedef unsigned long long ptrdiff_t ;
552 #endif
555 * to prevent <rpcsvc/yp_prot.h> from doing a redefine of 'bool'
557 * IRIX, HPUX, MacOS 10 and Solaris need BOOL_DEFINED
558 * Tru64 needs _BOOL_EXISTS
559 * AIX needs _BOOL,_TRUE,_FALSE
561 #ifndef BOOL_DEFINED
562 #define BOOL_DEFINED
563 #endif
564 #ifndef _BOOL_EXISTS
565 #define _BOOL_EXISTS
566 #endif
567 #ifndef _BOOL
568 #define _BOOL
569 #endif
571 #ifndef __bool_true_false_are_defined
572 #define __bool_true_false_are_defined
573 #endif
575 #ifndef true
576 #define true (1)
577 #endif
578 #ifndef false
579 #define false (0)
580 #endif
582 #ifndef _TRUE
583 #define _TRUE true
584 #endif
585 #ifndef _FALSE
586 #define _FALSE false
587 #endif
589 #ifndef HAVE_FUNCTION_MACRO
590 #ifdef HAVE_func_MACRO
591 #define __FUNCTION__ __func__
592 #else
593 #define __FUNCTION__ ("")
594 #endif
595 #endif
598 #ifndef MIN
599 #define MIN(a,b) ((a)<(b)?(a):(b))
600 #endif
602 #ifndef MAX
603 #define MAX(a,b) ((a)>(b)?(a):(b))
604 #endif
606 #if !defined(HAVE_VOLATILE)
607 #define volatile
608 #endif
611 this is a warning hack. The idea is to use this everywhere that we
612 get the "discarding const" warning from gcc. That doesn't actually
613 fix the problem of course, but it means that when we do get to
614 cleaning them up we can do it by searching the code for
615 discard_const.
617 It also means that other error types aren't as swamped by the noise
618 of hundreds of const warnings, so we are more likely to notice when
619 we get new errors.
621 Please only add more uses of this macro when you find it
622 _really_ hard to fix const warnings. Our aim is to eventually use
623 this function in only a very few places.
625 Also, please call this via the discard_const_p() macro interface, as that
626 makes the return type safe.
628 #define discard_const(ptr) ((void *)((uintptr_t)(ptr)))
630 /** Type-safe version of discard_const */
631 #define discard_const_p(type, ptr) ((type *)discard_const(ptr))
633 #ifndef __STRING
634 #define __STRING(x) #x
635 #endif
637 #ifndef __STRINGSTRING
638 #define __STRINGSTRING(x) __STRING(x)
639 #endif
641 #ifndef __LINESTR__
642 #define __LINESTR__ __STRINGSTRING(__LINE__)
643 #endif
645 #ifndef __location__
646 #define __location__ __FILE__ ":" __LINESTR__
647 #endif
649 /**
650 * zero a structure
652 #define ZERO_STRUCT(x) memset((char *)&(x), 0, sizeof(x))
654 /**
655 * zero a structure given a pointer to the structure
657 #define ZERO_STRUCTP(x) do { if ((x) != NULL) memset((char *)(x), 0, sizeof(*(x))); } while(0)
659 /**
660 * zero a structure given a pointer to the structure - no zero check
662 #define ZERO_STRUCTPN(x) memset((char *)(x), 0, sizeof(*(x)))
664 /* zero an array - note that sizeof(array) must work - ie. it must not be a
665 pointer */
666 #define ZERO_ARRAY(x) memset((char *)(x), 0, sizeof(x))
669 * work out how many elements there are in a static array
671 #define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
673 /**
674 * pointer difference macro
676 #define PTR_DIFF(p1,p2) ((ptrdiff_t)(((const char *)(p1)) - (const char *)(p2)))
678 #if MMAP_BLACKLIST
679 #undef HAVE_MMAP
680 #endif
682 #ifdef __COMPAR_FN_T
683 #define QSORT_CAST (__compar_fn_t)
684 #endif
686 #ifndef QSORT_CAST
687 #define QSORT_CAST (int (*)(const void *, const void *))
688 #endif
690 #ifndef PATH_MAX
691 #define PATH_MAX 1024
692 #endif
694 #ifndef MAX_DNS_NAME_LENGTH
695 #define MAX_DNS_NAME_LENGTH 256 /* Actually 255 but +1 for terminating null. */
696 #endif
698 #ifndef HAVE_CRYPT
699 char *ufc_crypt(const char *key, const char *salt);
700 #define crypt ufc_crypt
701 #else
702 #ifdef HAVE_CRYPT_H
703 #include <crypt.h>
704 #endif
705 #endif
707 #endif /* _LIBREPLACE_REPLACE_H */