source: vendor/current/lib/replace/replace.h

Last change on this file was 989, checked in by Silvan Scherrer, 9 years ago

Samba Server: update vendor to version 4.4.7
File size: 19.5 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3
4 macros to go along with the lib/replace/ portability layer code
5
6 Copyright (C) Andrew Tridgell 2005
7 Copyright (C) Jelmer Vernooij 2006-2008
8 Copyright (C) Jeremy Allison 2007.
9
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
13
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.
18
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.
23
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/>.
26*/
27
28#ifndef _LIBREPLACE_REPLACE_H
29#define _LIBREPLACE_REPLACE_H
30
31#ifndef NO_CONFIG_H
32#include "config.h"
33#endif
34
35#ifdef HAVE_STANDARDS_H
36#include <standards.h>
37#endif
38
39#include <stdio.h>
40#include <stdlib.h>
41#include <stdarg.h>
42#include <errno.h>
43
44#ifndef HAVE_DECL_EWOULDBLOCK
45#define EWOULDBLOCK EAGAIN
46#endif
47
48#if defined(_MSC_VER) || defined(__MINGW32__)
49#include "win32_replace.h"
50#endif
51
52
53#ifdef HAVE_INTTYPES_H
54#define __STDC_FORMAT_MACROS
55#include <inttypes.h>
56#elif HAVE_STDINT_H
57#include <stdint.h>
58/* force off HAVE_INTTYPES_H so that roken doesn't try to include both,
59 which causes a warning storm on irix */
60#undef HAVE_INTTYPES_H
61#endif
62
63#ifdef HAVE_MALLOC_H
64#include <malloc.h>
65#endif
66
67#ifndef __PRI64_PREFIX
68# if __WORDSIZE == 64 && ! defined __APPLE__
69# define __PRI64_PREFIX "l"
70# else
71# define __PRI64_PREFIX "ll"
72# endif
73#endif
74
75/* Decimal notation. */
76#ifndef PRId8
77# define PRId8 "d"
78#endif
79#ifndef PRId16
80# define PRId16 "d"
81#endif
82#ifndef PRId32
83# define PRId32 "d"
84#endif
85#ifndef PRId64
86# define PRId64 __PRI64_PREFIX "d"
87#endif
88
89#ifndef PRIi8
90# define PRIi8 "i"
91#endif
92#ifndef PRIi16
93# define PRIi16 "i"
94#endif
95#ifndef PRIi32
96# define PRIi32 "i"
97#endif
98#ifndef PRIi64
99# define PRIi64 __PRI64_PREFIX "i"
100#endif
101
102#ifndef PRIu8
103# define PRIu8 "u"
104#endif
105#ifndef PRIu16
106# define PRIu16 "u"
107#endif
108#ifndef PRIu32
109# define PRIu32 "u"
110#endif
111#ifndef PRIu64
112# define PRIu64 __PRI64_PREFIX "u"
113#endif
114
115#ifndef SCNd8
116# define SCNd8 "hhd"
117#endif
118#ifndef SCNd16
119# define SCNd16 "hd"
120#endif
121#ifndef SCNd32
122# define SCNd32 "d"
123#endif
124#ifndef SCNd64
125# define SCNd64 __PRI64_PREFIX "d"
126#endif
127
128#ifndef SCNi8
129# define SCNi8 "hhi"
130#endif
131#ifndef SCNi16
132# define SCNi16 "hi"
133#endif
134#ifndef SCNi32
135# define SCNi32 "i"
136#endif
137#ifndef SCNi64
138# define SCNi64 __PRI64_PREFIX "i"
139#endif
140
141#ifndef SCNu8
142# define SCNu8 "hhu"
143#endif
144#ifndef SCNu16
145# define SCNu16 "hu"
146#endif
147#ifndef SCNu32
148# define SCNu32 "u"
149#endif
150#ifndef SCNu64
151# define SCNu64 __PRI64_PREFIX "u"
152#endif
153
154#ifdef HAVE_BSD_STRING_H
155#include <bsd/string.h>
156#endif
157
158#ifdef HAVE_BSD_UNISTD_H
159#include <bsd/unistd.h>
160#endif
161
162#ifdef HAVE_STRING_H
163#include <string.h>
164#endif
165
166#ifdef HAVE_STRINGS_H
167#include <strings.h>
168#endif
169
170#ifdef HAVE_SYS_TYPES_H
171#include <sys/types.h>
172#endif
173
174#ifdef HAVE_SETPROCTITLE_H
175#include <setproctitle.h>
176#endif
177
178#if STDC_HEADERS
179#include <stdlib.h>
180#include <stddef.h>
181#endif
182
183#ifdef HAVE_LINUX_TYPES_H
184/*
185 * This is needed as some broken header files require this to be included early
186 */
187#include <linux/types.h>
188#endif
189
190#ifndef HAVE_STRERROR
191extern char *sys_errlist[];
192#define strerror(i) sys_errlist[i]
193#endif
194
195#ifndef HAVE_ERRNO_DECL
196extern int errno;
197#endif
198
199#ifndef HAVE_STRDUP
200#define strdup rep_strdup
201char *rep_strdup(const char *s);
202#endif
203
204#ifndef HAVE_MEMMOVE
205#define memmove rep_memmove
206void *rep_memmove(void *dest,const void *src,int size);
207#endif
208
209#ifndef HAVE_MEMMEM
210#define memmem rep_memmem
211void *rep_memmem(const void *haystack, size_t haystacklen,
212 const void *needle, size_t needlelen);
213#endif
214
215#ifndef HAVE_MEMALIGN
216#define memalign rep_memalign
217void *rep_memalign(size_t boundary, size_t size);
218#endif
219
220#ifndef HAVE_MKTIME
221#define mktime rep_mktime
222/* prototype is in "system/time.h" */
223#endif
224
225#ifndef HAVE_TIMEGM
226#define timegm rep_timegm
227/* prototype is in "system/time.h" */
228#endif
229
230#ifndef HAVE_UTIME
231#define utime rep_utime
232/* prototype is in "system/time.h" */
233#endif
234
235#ifndef HAVE_UTIMES
236#define utimes rep_utimes
237/* prototype is in "system/time.h" */
238#endif
239
240#ifndef HAVE_STRLCPY
241#define strlcpy rep_strlcpy
242size_t rep_strlcpy(char *d, const char *s, size_t bufsize);
243#endif
244
245#ifndef HAVE_STRLCAT
246#define strlcat rep_strlcat
247size_t rep_strlcat(char *d, const char *s, size_t bufsize);
248#endif
249
250#if (defined(BROKEN_STRNDUP) || !defined(HAVE_STRNDUP))
251#undef HAVE_STRNDUP
252#define strndup rep_strndup
253char *rep_strndup(const char *s, size_t n);
254#endif
255
256#if (defined(BROKEN_STRNLEN) || !defined(HAVE_STRNLEN))
257#undef HAVE_STRNLEN
258#define strnlen rep_strnlen
259size_t rep_strnlen(const char *s, size_t n);
260#endif
261
262#if !HAVE_DECL_ENVIRON
263#ifdef __APPLE__
264#include <crt_externs.h>
265#define environ (*_NSGetEnviron())
266#else
267extern char **environ;
268#endif
269#endif
270
271#ifndef HAVE_SETENV
272#define setenv rep_setenv
273int rep_setenv(const char *name, const char *value, int overwrite);
274#else
275#ifndef HAVE_SETENV_DECL
276int setenv(const char *name, const char *value, int overwrite);
277#endif
278#endif
279
280#ifndef HAVE_UNSETENV
281#define unsetenv rep_unsetenv
282int rep_unsetenv(const char *name);
283#endif
284
285#ifndef HAVE_SETEUID
286#define seteuid rep_seteuid
287int rep_seteuid(uid_t);
288#endif
289
290#ifndef HAVE_SETEGID
291#define setegid rep_setegid
292int rep_setegid(gid_t);
293#endif
294
295#if (defined(USE_SETRESUID) && !defined(HAVE_SETRESUID_DECL))
296/* stupid glibc */
297int setresuid(uid_t ruid, uid_t euid, uid_t suid);
298#endif
299#if (defined(USE_SETRESUID) && !defined(HAVE_SETRESGID_DECL))
300int setresgid(gid_t rgid, gid_t egid, gid_t sgid);
301#endif
302
303#ifndef HAVE_CHOWN
304#define chown rep_chown
305int rep_chown(const char *path, uid_t uid, gid_t gid);
306#endif
307
308#ifndef HAVE_CHROOT
309#define chroot rep_chroot
310int rep_chroot(const char *dirname);
311#endif
312
313#ifndef HAVE_LINK
314#define link rep_link
315int rep_link(const char *oldpath, const char *newpath);
316#endif
317
318#ifndef HAVE_READLINK
319#define readlink rep_readlink
320ssize_t rep_readlink(const char *path, char *buf, size_t bufsize);
321#endif
322
323#ifndef HAVE_SYMLINK
324#define symlink rep_symlink
325int rep_symlink(const char *oldpath, const char *newpath);
326#endif
327
328#ifndef HAVE_REALPATH
329#define realpath rep_realpath
330char *rep_realpath(const char *path, char *resolved_path);
331#endif
332
333#ifndef HAVE_LCHOWN
334#define lchown rep_lchown
335int rep_lchown(const char *fname,uid_t uid,gid_t gid);
336#endif
337
338#ifdef HAVE_UNIX_H
339#include <unix.h>
340#endif
341
342#ifndef HAVE_SETLINEBUF
343#define setlinebuf rep_setlinebuf
344void rep_setlinebuf(FILE *);
345#endif
346
347#ifndef HAVE_STRCASESTR
348#define strcasestr rep_strcasestr
349char *rep_strcasestr(const char *haystack, const char *needle);
350#endif
351
352#ifndef HAVE_STRSEP
353#define strsep rep_strsep
354char *rep_strsep(char **pps, const char *delim);
355#endif
356
357#ifndef HAVE_STRTOK_R
358#define strtok_r rep_strtok_r
359char *rep_strtok_r(char *s, const char *delim, char **save_ptr);
360#endif
361
362
363
364#ifndef HAVE_STRTOLL
365#define strtoll rep_strtoll
366long long int rep_strtoll(const char *str, char **endptr, int base);
367#else
368#ifdef HAVE_BSD_STRTOLL
369#define strtoll rep_strtoll
370long long int rep_strtoll(const char *str, char **endptr, int base);
371#endif
372#endif
373
374#ifndef HAVE_STRTOULL
375#define strtoull rep_strtoull
376unsigned long long int rep_strtoull(const char *str, char **endptr, int base);
377#else
378#ifdef HAVE_BSD_STRTOLL /* yes, it's not HAVE_BSD_STRTOULL */
379#define strtoull rep_strtoull
380unsigned long long int rep_strtoull(const char *str, char **endptr, int base);
381#endif
382#endif
383
384#ifndef HAVE_FTRUNCATE
385#define ftruncate rep_ftruncate
386int rep_ftruncate(int,off_t);
387#endif
388
389#ifndef HAVE_INITGROUPS
390#define initgroups rep_initgroups
391int rep_initgroups(char *name, gid_t id);
392#endif
393
394#if !defined(HAVE_BZERO) && defined(HAVE_MEMSET)
395#define bzero(a,b) memset((a),'\0',(b))
396#endif
397
398#ifndef HAVE_DLERROR
399#define dlerror rep_dlerror
400char *rep_dlerror(void);
401#endif
402
403#ifndef HAVE_DLOPEN
404#define dlopen rep_dlopen
405#ifdef DLOPEN_TAKES_UNSIGNED_FLAGS
406void *rep_dlopen(const char *name, unsigned int flags);
407#else
408void *rep_dlopen(const char *name, int flags);
409#endif
410#endif
411
412#ifndef HAVE_DLSYM
413#define dlsym rep_dlsym
414void *rep_dlsym(void *handle, const char *symbol);
415#endif
416
417#ifndef HAVE_DLCLOSE
418#define dlclose rep_dlclose
419int rep_dlclose(void *handle);
420#endif
421
422#ifndef HAVE_SOCKETPAIR
423#define socketpair rep_socketpair
424/* prototype is in system/network.h */
425#endif
426
427#ifndef PRINTF_ATTRIBUTE
428#ifdef HAVE___ATTRIBUTE__
429/** Use gcc attribute to check printf fns. a1 is the 1-based index of
430 * the parameter containing the format, and a2 the index of the first
431 * argument. Note that some gcc 2.x versions don't handle this
432 * properly **/
433#define PRINTF_ATTRIBUTE(a1, a2) __attribute__ ((format (__printf__, a1, a2)))
434#else
435#define PRINTF_ATTRIBUTE(a1, a2)
436#endif
437#endif
438
439#ifndef _DEPRECATED_
440#ifdef HAVE___ATTRIBUTE__
441#define _DEPRECATED_ __attribute__ ((deprecated))
442#else
443#define _DEPRECATED_
444#endif
445#endif
446
447#if !defined(HAVE_VDPRINTF) || !defined(HAVE_C99_VSNPRINTF)
448#define vdprintf rep_vdprintf
449int rep_vdprintf(int fd, const char *format, va_list ap) PRINTF_ATTRIBUTE(2,0);
450#endif
451
452#if !defined(HAVE_DPRINTF) || !defined(HAVE_C99_VSNPRINTF)
453#define dprintf rep_dprintf
454int rep_dprintf(int fd, const char *format, ...) PRINTF_ATTRIBUTE(2,3);
455#endif
456
457#if !defined(HAVE_VASPRINTF) || !defined(HAVE_C99_VSNPRINTF)
458#define vasprintf rep_vasprintf
459int rep_vasprintf(char **ptr, const char *format, va_list ap) PRINTF_ATTRIBUTE(2,0);
460#endif
461
462#if !defined(HAVE_SNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
463#define snprintf rep_snprintf
464int rep_snprintf(char *,size_t ,const char *, ...) PRINTF_ATTRIBUTE(3,4);
465#endif
466
467#if !defined(HAVE_VSNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
468#define vsnprintf rep_vsnprintf
469int rep_vsnprintf(char *,size_t ,const char *, va_list ap) PRINTF_ATTRIBUTE(3,0);
470#endif
471
472#if !defined(HAVE_ASPRINTF) || !defined(HAVE_C99_VSNPRINTF)
473#define asprintf rep_asprintf
474int rep_asprintf(char **,const char *, ...) PRINTF_ATTRIBUTE(2,3);
475#endif
476
477#if !defined(HAVE_C99_VSNPRINTF)
478#ifdef REPLACE_BROKEN_PRINTF
479/*
480 * We do not redefine printf by default
481 * as it breaks the build if system headers
482 * use __attribute__((format(printf, 3, 0)))
483 * instead of __attribute__((format(__printf__, 3, 0)))
484 */
485#define printf rep_printf
486#endif
487int rep_printf(const char *, ...) PRINTF_ATTRIBUTE(1,2);
488#endif
489
490#if !defined(HAVE_C99_VSNPRINTF)
491#define fprintf rep_fprintf
492int rep_fprintf(FILE *stream, const char *, ...) PRINTF_ATTRIBUTE(2,3);
493#endif
494
495#ifndef HAVE_VSYSLOG
496#ifdef HAVE_SYSLOG
497#define vsyslog rep_vsyslog
498void rep_vsyslog (int facility_priority, const char *format, va_list arglist) PRINTF_ATTRIBUTE(2,0);
499#endif
500#endif
501
502/* we used to use these fns, but now we have good replacements
503 for snprintf and vsnprintf */
504#define slprintf snprintf
505
506
507#ifndef HAVE_VA_COPY
508#undef va_copy
509#ifdef HAVE___VA_COPY
510#define va_copy(dest, src) __va_copy(dest, src)
511#else
512#define va_copy(dest, src) (dest) = (src)
513#endif
514#endif
515
516#ifndef HAVE_VOLATILE
517#define volatile
518#endif
519
520#ifndef HAVE_COMPARISON_FN_T
521typedef int (*comparison_fn_t)(const void *, const void *);
522#endif
523
524#ifndef HAVE_WORKING_STRPTIME
525#define strptime rep_strptime
526struct tm;
527char *rep_strptime(const char *buf, const char *format, struct tm *tm);
528#endif
529
530#ifndef HAVE_DUP2
531#define dup2 rep_dup2
532int rep_dup2(int oldfd, int newfd);
533#endif
534
535/* Load header file for dynamic linking stuff */
536#ifdef HAVE_DLFCN_H
537#include <dlfcn.h>
538#endif
539
540#ifndef RTLD_LAZY
541#define RTLD_LAZY 0
542#endif
543#ifndef RTLD_NOW
544#define RTLD_NOW 0
545#endif
546#ifndef RTLD_GLOBAL
547#define RTLD_GLOBAL 0
548#endif
549
550#ifndef HAVE_SECURE_MKSTEMP
551#define mkstemp(path) rep_mkstemp(path)
552int rep_mkstemp(char *temp);
553#endif
554
555#ifndef HAVE_MKDTEMP
556#define mkdtemp rep_mkdtemp
557char *rep_mkdtemp(char *template);
558#endif
559
560#ifndef HAVE_PREAD
561#define pread rep_pread
562ssize_t rep_pread(int __fd, void *__buf, size_t __nbytes, off_t __offset);
563#define LIBREPLACE_PREAD_REPLACED 1
564#else
565#define LIBREPLACE_PREAD_NOT_REPLACED 1
566#endif
567
568#ifndef HAVE_PWRITE
569#define pwrite rep_pwrite
570ssize_t rep_pwrite(int __fd, const void *__buf, size_t __nbytes, off_t __offset);
571#define LIBREPLACE_PWRITE_REPLACED 1
572#else
573#define LIBREPLACE_PWRITE_NOT_REPLACED 1
574#endif
575
576#if !defined(HAVE_INET_NTOA) || defined(REPLACE_INET_NTOA)
577#define inet_ntoa rep_inet_ntoa
578/* prototype is in "system/network.h" */
579#endif
580
581#ifndef HAVE_INET_PTON
582#define inet_pton rep_inet_pton
583/* prototype is in "system/network.h" */
584#endif
585
586#ifndef HAVE_INET_NTOP
587#define inet_ntop rep_inet_ntop
588/* prototype is in "system/network.h" */
589#endif
590
591#ifndef HAVE_INET_ATON
592#define inet_aton rep_inet_aton
593/* prototype is in "system/network.h" */
594#endif
595
596#ifndef HAVE_CONNECT
597#define connect rep_connect
598/* prototype is in "system/network.h" */
599#endif
600
601#ifndef HAVE_GETHOSTBYNAME
602#define gethostbyname rep_gethostbyname
603/* prototype is in "system/network.h" */
604#endif
605
606#ifndef HAVE_GETIFADDRS
607#define getifaddrs rep_getifaddrs
608/* prototype is in "system/network.h" */
609#endif
610
611#ifndef HAVE_FREEIFADDRS
612#define freeifaddrs rep_freeifaddrs
613/* prototype is in "system/network.h" */
614#endif
615
616#ifndef HAVE_GET_CURRENT_DIR_NAME
617#define get_current_dir_name rep_get_current_dir_name
618char *rep_get_current_dir_name(void);
619#endif
620
621#ifndef HAVE_STRERROR_R
622#define strerror_r rep_strerror_r
623int rep_strerror_r(int errnum, char *buf, size_t buflen);
624#endif
625
626#if !defined(HAVE_CLOCK_GETTIME)
627#define clock_gettime rep_clock_gettime
628#endif
629
630#ifdef HAVE_LIMITS_H
631#include <limits.h>
632#endif
633
634#ifdef HAVE_SYS_PARAM_H
635#include <sys/param.h>
636#endif
637
638/* The extra casts work around common compiler bugs. */
639#define _TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
640/* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
641 It is necessary at least when t == time_t. */
642#define _TYPE_MINIMUM(t) ((t) (_TYPE_SIGNED (t) \
643 ? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) : (t) 0))
644#define _TYPE_MAXIMUM(t) ((t) (~ (t) 0 - _TYPE_MINIMUM (t)))
645
646#ifndef UINT16_MAX
647#define UINT16_MAX 65535
648#endif
649
650#ifndef UINT32_MAX
651#define UINT32_MAX (4294967295U)
652#endif
653
654#ifndef UINT64_MAX
655#define UINT64_MAX ((uint64_t)-1)
656#endif
657
658#ifndef INT64_MAX
659#define INT64_MAX 9223372036854775807LL
660#endif
661
662#ifndef CHAR_BIT
663#define CHAR_BIT 8
664#endif
665
666#ifndef INT32_MAX
667#define INT32_MAX _TYPE_MAXIMUM(int32_t)
668#endif
669
670#ifdef HAVE_STDBOOL_H
671#include <stdbool.h>
672#endif
673
674#if !defined(HAVE_BOOL)
675#ifdef HAVE__Bool
676#define bool _Bool
677#else
678typedef int bool;
679#endif
680#endif
681
682#if !defined(HAVE_INTPTR_T)
683typedef long long intptr_t ;
684#endif
685
686#if !defined(HAVE_UINTPTR_T)
687typedef unsigned long long uintptr_t ;
688#endif
689
690#if !defined(HAVE_PTRDIFF_T)
691typedef unsigned long long ptrdiff_t ;
692#endif
693
694/*
695 * to prevent <rpcsvc/yp_prot.h> from doing a redefine of 'bool'
696 *
697 * IRIX, HPUX, MacOS 10 and Solaris need BOOL_DEFINED
698 * Tru64 needs _BOOL_EXISTS
699 * AIX needs _BOOL,_TRUE,_FALSE
700 */
701#ifndef BOOL_DEFINED
702#define BOOL_DEFINED
703#endif
704#ifndef _BOOL_EXISTS
705#define _BOOL_EXISTS
706#endif
707#ifndef _BOOL
708#define _BOOL
709#endif
710
711#ifndef __bool_true_false_are_defined
712#define __bool_true_false_are_defined
713#endif
714
715#ifndef true
716#define true (1)
717#endif
718#ifndef false
719#define false (0)
720#endif
721
722#ifndef _TRUE
723#define _TRUE true
724#endif
725#ifndef _FALSE
726#define _FALSE false
727#endif
728
729#ifndef HAVE_FUNCTION_MACRO
730#ifdef HAVE_func_MACRO
731#define __FUNCTION__ __func__
732#else
733#define __FUNCTION__ ("")
734#endif
735#endif
736
737
738#ifndef MIN
739#define MIN(a,b) ((a)<(b)?(a):(b))
740#endif
741
742#ifndef MAX
743#define MAX(a,b) ((a)>(b)?(a):(b))
744#endif
745
746#if !defined(HAVE_VOLATILE)
747#define volatile
748#endif
749
750/**
751 this is a warning hack. The idea is to use this everywhere that we
752 get the "discarding const" warning from gcc. That doesn't actually
753 fix the problem of course, but it means that when we do get to
754 cleaning them up we can do it by searching the code for
755 discard_const.
756
757 It also means that other error types aren't as swamped by the noise
758 of hundreds of const warnings, so we are more likely to notice when
759 we get new errors.
760
761 Please only add more uses of this macro when you find it
762 _really_ hard to fix const warnings. Our aim is to eventually use
763 this function in only a very few places.
764
765 Also, please call this via the discard_const_p() macro interface, as that
766 makes the return type safe.
767*/
768#define discard_const(ptr) ((void *)((uintptr_t)(ptr)))
769
770/** Type-safe version of discard_const */
771#define discard_const_p(type, ptr) ((type *)discard_const(ptr))
772
773#ifndef __STRING
774#define __STRING(x) #x
775#endif
776
777#ifndef __STRINGSTRING
778#define __STRINGSTRING(x) __STRING(x)
779#endif
780
781#ifndef __LINESTR__
782#define __LINESTR__ __STRINGSTRING(__LINE__)
783#endif
784
785#ifndef __location__
786#define __location__ __FILE__ ":" __LINESTR__
787#endif
788
789/**
790 * zero a structure
791 */
792#define ZERO_STRUCT(x) memset((char *)&(x), 0, sizeof(x))
793
794/**
795 * zero a structure given a pointer to the structure
796 */
797#define ZERO_STRUCTP(x) do { if ((x) != NULL) memset((char *)(x), 0, sizeof(*(x))); } while(0)
798
799/**
800 * zero a structure given a pointer to the structure - no zero check
801 */
802#define ZERO_STRUCTPN(x) memset((char *)(x), 0, sizeof(*(x)))
803
804/* zero an array - note that sizeof(array) must work - ie. it must not be a
805 pointer */
806#define ZERO_ARRAY(x) memset((char *)(x), 0, sizeof(x))
807
808/**
809 * work out how many elements there are in a static array
810 */
811#define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
812
813/**
814 * pointer difference macro
815 */
816#define PTR_DIFF(p1,p2) ((ptrdiff_t)(((const char *)(p1)) - (const char *)(p2)))
817
818#if MMAP_BLACKLIST
819#undef HAVE_MMAP
820#endif
821
822#ifdef __COMPAR_FN_T
823#define QSORT_CAST (__compar_fn_t)
824#endif
825
826#ifndef QSORT_CAST
827#define QSORT_CAST (int (*)(const void *, const void *))
828#endif
829
830#ifndef PATH_MAX
831#define PATH_MAX 1024
832#endif
833
834#ifndef MAX_DNS_NAME_LENGTH
835#define MAX_DNS_NAME_LENGTH 256 /* Actually 255 but +1 for terminating null. */
836#endif
837
838#ifndef HAVE_CRYPT
839char *ufc_crypt(const char *key, const char *salt);
840#define crypt ufc_crypt
841#else
842#ifdef HAVE_CRYPT_H
843#include <crypt.h>
844#endif
845#endif
846
847/* these macros gain us a few percent of speed on gcc */
848#if (__GNUC__ >= 3)
849/* the strange !! is to ensure that __builtin_expect() takes either 0 or 1
850 as its first argument */
851#ifndef likely
852#define likely(x) __builtin_expect(!!(x), 1)
853#endif
854#ifndef unlikely
855#define unlikely(x) __builtin_expect(!!(x), 0)
856#endif
857#else
858#ifndef likely
859#define likely(x) (x)
860#endif
861#ifndef unlikely
862#define unlikely(x) (x)
863#endif
864#endif
865
866#ifndef HAVE_FDATASYNC
867#define fdatasync(fd) fsync(fd)
868#elif !defined(HAVE_DECL_FDATASYNC)
869int fdatasync(int );
870#endif
871
872/* these are used to mark symbols as local to a shared lib, or
873 * publicly available via the shared lib API */
874#ifndef _PUBLIC_
875#ifdef HAVE_VISIBILITY_ATTR
876#define _PUBLIC_ __attribute__((visibility("default")))
877#else
878#define _PUBLIC_
879#endif
880#endif
881
882#ifndef _PRIVATE_
883#ifdef HAVE_VISIBILITY_ATTR
884# define _PRIVATE_ __attribute__((visibility("hidden")))
885#else
886# define _PRIVATE_
887#endif
888#endif
889
890#ifndef HAVE_POLL
891#define poll rep_poll
892/* prototype is in "system/network.h" */
893#endif
894
895#ifndef HAVE_GETPEEREID
896#define getpeereid rep_getpeereid
897int rep_getpeereid(int s, uid_t *uid, gid_t *gid);
898#endif
899
900#ifndef HAVE_USLEEP
901#define usleep rep_usleep
902typedef long useconds_t;
903int usleep(useconds_t);
904#endif
905
906#ifndef HAVE_SETPROCTITLE
907#define setproctitle rep_setproctitle
908void rep_setproctitle(const char *fmt, ...) PRINTF_ATTRIBUTE(1, 2);
909#endif
910
911bool nss_wrapper_enabled(void);
912bool nss_wrapper_hosts_enabled(void);
913bool socket_wrapper_enabled(void);
914bool uid_wrapper_enabled(void);
915
916/* Needed for Solaris atomic_add_XX functions. */
917#if defined(HAVE_SYS_ATOMIC_H)
918#include <sys/atomic.h>
919#endif
920
921#endif /* _LIBREPLACE_REPLACE_H */
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