source: trunk/server/lib/replace/replace.h

Last change on this file was 862, checked in by Silvan Scherrer, 11 years ago

Samba Server: update trunk to 3.6.23
File size: 18.1 KB
RevLine 
[862]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#if defined(_MSC_VER) || defined(__MINGW32__)
45#include "win32_replace.h"
46#endif
47
48
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
58
59#ifndef __PRI64_PREFIX
60# if __WORDSIZE == 64
61# define __PRI64_PREFIX "l"
62# else
63# define __PRI64_PREFIX "ll"
64# endif
65#endif
66
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
80
81#ifndef PRIi8
82# define PRIi8 "i"
83#endif
84#ifndef PRIi16
85# define PRIi16 "i"
86#endif
87#ifndef PRIi32
88# define PRIi32 "i"
89#endif
90#ifndef PRIi64
91# define PRIi64 __PRI64_PREFIX "i"
92#endif
93
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
106
107#ifdef HAVE_STRING_H
108#include <string.h>
109#endif
110
111#ifdef HAVE_STRINGS_H
112#include <strings.h>
113#endif
114
115#ifdef HAVE_SYS_TYPES_H
116#include <sys/types.h>
117#endif
118
119#if STDC_HEADERS
120#include <stdlib.h>
121#include <stddef.h>
122#endif
123
124#ifdef HAVE_LINUX_TYPES_H
125/*
126 * This is needed as some broken header files require this to be included early
127 */
128#include <linux/types.h>
129#endif
130
131#ifndef HAVE_STRERROR
132extern char *sys_errlist[];
133#define strerror(i) sys_errlist[i]
134#endif
135
136#ifndef HAVE_ERRNO_DECL
137extern int errno;
138#endif
139
140#ifndef HAVE_STRDUP
141#define strdup rep_strdup
142char *rep_strdup(const char *s);
143#endif
144
145#ifndef HAVE_MEMMOVE
146#define memmove rep_memmove
147void *rep_memmove(void *dest,const void *src,int size);
148#endif
149
150#ifndef HAVE_MEMMEM
151#define memmem rep_memmem
152void *rep_memmem(const void *haystack, size_t haystacklen,
153 const void *needle, size_t needlelen);
154#endif
155
156#ifndef HAVE_MKTIME
157#define mktime rep_mktime
158/* prototype is in "system/time.h" */
159#endif
160
161#ifndef HAVE_TIMEGM
162#define timegm rep_timegm
163/* prototype is in "system/time.h" */
164#endif
165
166#ifndef HAVE_UTIME
167#define utime rep_utime
168/* prototype is in "system/time.h" */
169#endif
170
171#ifndef HAVE_UTIMES
172#define utimes rep_utimes
173/* prototype is in "system/time.h" */
174#endif
175
176#ifndef HAVE_STRLCPY
177#define strlcpy rep_strlcpy
178size_t rep_strlcpy(char *d, const char *s, size_t bufsize);
179#endif
180
181#ifndef HAVE_STRLCAT
182#define strlcat rep_strlcat
183size_t rep_strlcat(char *d, const char *s, size_t bufsize);
184#endif
185
186#if (defined(BROKEN_STRNDUP) || !defined(HAVE_STRNDUP))
187#undef HAVE_STRNDUP
188#define strndup rep_strndup
189char *rep_strndup(const char *s, size_t n);
190#endif
191
192#if (defined(BROKEN_STRNLEN) || !defined(HAVE_STRNLEN))
193#undef HAVE_STRNLEN
194#define strnlen rep_strnlen
195size_t rep_strnlen(const char *s, size_t n);
196#endif
197
198#if !HAVE_DECL_ENVIRON
199#ifdef __APPLE__
200#include <crt_externs.h>
201#define environ (*_NSGetEnviron())
202#else
203extern char **environ;
204#endif
205#endif
206
207#ifndef HAVE_SETENV
208#define setenv rep_setenv
209int rep_setenv(const char *name, const char *value, int overwrite);
210#else
211#ifndef HAVE_SETENV_DECL
212int setenv(const char *name, const char *value, int overwrite);
213#endif
214#endif
215
216#ifndef HAVE_UNSETENV
217#define unsetenv rep_unsetenv
218int rep_unsetenv(const char *name);
219#endif
220
221#ifndef HAVE_SETEUID
222#define seteuid rep_seteuid
223int rep_seteuid(uid_t);
224#endif
225
226#ifndef HAVE_SETEGID
227#define setegid rep_setegid
228int rep_setegid(gid_t);
229#endif
230
231#if (defined(USE_SETRESUID) && !defined(HAVE_SETRESUID_DECL))
232/* stupid glibc */
233int setresuid(uid_t ruid, uid_t euid, uid_t suid);
234#endif
235#if (defined(USE_SETRESUID) && !defined(HAVE_SETRESGID_DECL))
236int setresgid(gid_t rgid, gid_t egid, gid_t sgid);
237#endif
238
239#ifndef HAVE_CHOWN
240#define chown rep_chown
241int rep_chown(const char *path, uid_t uid, gid_t gid);
242#endif
243
244#ifndef HAVE_CHROOT
245#define chroot rep_chroot
246int rep_chroot(const char *dirname);
247#endif
248
249#ifndef HAVE_LINK
250#define link rep_link
251int rep_link(const char *oldpath, const char *newpath);
252#endif
253
254#ifndef HAVE_READLINK
255#define readlink rep_readlink
256ssize_t rep_readlink(const char *path, char *buf, size_t bufsize);
257#endif
258
259#ifndef HAVE_SYMLINK
260#define symlink rep_symlink
261int rep_symlink(const char *oldpath, const char *newpath);
262#endif
263
264#ifndef HAVE_REALPATH
265#define realpath rep_realpath
266char *rep_realpath(const char *path, char *resolved_path);
267#endif
268
269#ifndef HAVE_LCHOWN
270#define lchown rep_lchown
271int rep_lchown(const char *fname,uid_t uid,gid_t gid);
272#endif
273
274#ifdef HAVE_UNIX_H
275#include <unix.h>
276#endif
277
278#ifndef HAVE_SETLINEBUF
279#define setlinebuf rep_setlinebuf
280void rep_setlinebuf(FILE *);
281#endif
282
283#ifndef HAVE_STRCASESTR
284#define strcasestr rep_strcasestr
285char *rep_strcasestr(const char *haystack, const char *needle);
286#endif
287
288#ifndef HAVE_STRTOK_R
289#define strtok_r rep_strtok_r
290char *rep_strtok_r(char *s, const char *delim, char **save_ptr);
291#endif
292
293
294
295#ifndef HAVE_STRTOLL
296#define strtoll rep_strtoll
297long long int rep_strtoll(const char *str, char **endptr, int base);
298#else
299#ifdef HAVE_BSD_STRTOLL
300#define strtoll rep_strtoll
301long long int rep_strtoll(const char *str, char **endptr, int base);
302#endif
303#endif
304
305#ifndef HAVE_STRTOULL
306#define strtoull rep_strtoull
307unsigned long long int rep_strtoull(const char *str, char **endptr, int base);
308#else
309#ifdef HAVE_BSD_STRTOLL /* yes, it's not HAVE_BSD_STRTOULL */
310#define strtoull rep_strtoull
311unsigned long long int rep_strtoull(const char *str, char **endptr, int base);
312#endif
313#endif
314
315#ifndef HAVE_FTRUNCATE
316#define ftruncate rep_ftruncate
317int rep_ftruncate(int,off_t);
318#endif
319
320#ifndef HAVE_INITGROUPS
321#define initgroups rep_initgroups
322int rep_initgroups(char *name, gid_t id);
323#endif
324
325#if !defined(HAVE_BZERO) && defined(HAVE_MEMSET)
326#define bzero(a,b) memset((a),'\0',(b))
327#endif
328
329#ifndef HAVE_DLERROR
330#define dlerror rep_dlerror
331char *rep_dlerror(void);
332#endif
333
334#ifndef HAVE_DLOPEN
335#define dlopen rep_dlopen
336#ifdef DLOPEN_TAKES_UNSIGNED_FLAGS
337void *rep_dlopen(const char *name, unsigned int flags);
338#else
339void *rep_dlopen(const char *name, int flags);
340#endif
341#endif
342
343#ifndef HAVE_DLSYM
344#define dlsym rep_dlsym
345void *rep_dlsym(void *handle, const char *symbol);
346#endif
347
348#ifndef HAVE_DLCLOSE
349#define dlclose rep_dlclose
350int rep_dlclose(void *handle);
351#endif
352
353#ifndef HAVE_SOCKETPAIR
354#define socketpair rep_socketpair
355/* prototype is in system/network.h */
356#endif
357
358#ifndef PRINTF_ATTRIBUTE
359#if (__GNUC__ >= 3) && (__GNUC_MINOR__ >= 1 )
360/** Use gcc attribute to check printf fns. a1 is the 1-based index of
361 * the parameter containing the format, and a2 the index of the first
362 * argument. Note that some gcc 2.x versions don't handle this
363 * properly **/
364#define PRINTF_ATTRIBUTE(a1, a2) __attribute__ ((format (__printf__, a1, a2)))
365#else
366#define PRINTF_ATTRIBUTE(a1, a2)
367#endif
368#endif
369
370#ifndef _DEPRECATED_
371#if (__GNUC__ >= 3) && (__GNUC_MINOR__ >= 1 )
372#define _DEPRECATED_ __attribute__ ((deprecated))
373#else
374#define _DEPRECATED_
375#endif
376#endif
377
378#if !defined(HAVE_VDPRINTF) || !defined(HAVE_C99_VSNPRINTF)
379#define vdprintf rep_vdprintf
380int rep_vdprintf(int fd, const char *format, va_list ap) PRINTF_ATTRIBUTE(2,0);
381#endif
382
383#if !defined(HAVE_DPRINTF) || !defined(HAVE_C99_VSNPRINTF)
384#define dprintf rep_dprintf
385int rep_dprintf(int fd, const char *format, ...) PRINTF_ATTRIBUTE(2,3);
386#endif
387
388#if !defined(HAVE_VASPRINTF) || !defined(HAVE_C99_VSNPRINTF)
389#define vasprintf rep_vasprintf
390int rep_vasprintf(char **ptr, const char *format, va_list ap) PRINTF_ATTRIBUTE(2,0);
391#endif
392
393#if !defined(HAVE_SNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
394#define snprintf rep_snprintf
395int rep_snprintf(char *,size_t ,const char *, ...) PRINTF_ATTRIBUTE(3,4);
396#endif
397
398#if !defined(HAVE_VSNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
399#define vsnprintf rep_vsnprintf
400int rep_vsnprintf(char *,size_t ,const char *, va_list ap) PRINTF_ATTRIBUTE(3,0);
401#endif
402
403#if !defined(HAVE_ASPRINTF) || !defined(HAVE_C99_VSNPRINTF)
404#define asprintf rep_asprintf
405int rep_asprintf(char **,const char *, ...) PRINTF_ATTRIBUTE(2,3);
406#endif
407
408#if !defined(HAVE_C99_VSNPRINTF)
409#ifdef REPLACE_BROKEN_PRINTF
410/*
411 * We do not redefine printf by default
412 * as it breaks the build if system headers
413 * use __attribute__((format(printf, 3, 0)))
414 * instead of __attribute__((format(__printf__, 3, 0)))
415 */
416#define printf rep_printf
417#endif
418int rep_printf(const char *, ...) PRINTF_ATTRIBUTE(1,2);
419#endif
420
421#if !defined(HAVE_C99_VSNPRINTF)
422#define fprintf rep_fprintf
423int rep_fprintf(FILE *stream, const char *, ...) PRINTF_ATTRIBUTE(2,3);
424#endif
425
426#ifndef HAVE_VSYSLOG
427#ifdef HAVE_SYSLOG
428#define vsyslog rep_vsyslog
429void rep_vsyslog (int facility_priority, const char *format, va_list arglist) PRINTF_ATTRIBUTE(2,0);
430#endif
431#endif
432
433/* we used to use these fns, but now we have good replacements
434 for snprintf and vsnprintf */
435#define slprintf snprintf
436
437
438#ifndef HAVE_VA_COPY
439#undef va_copy
440#ifdef HAVE___VA_COPY
441#define va_copy(dest, src) __va_copy(dest, src)
442#else
443#define va_copy(dest, src) (dest) = (src)
444#endif
445#endif
446
447#ifndef HAVE_VOLATILE
448#define volatile
449#endif
450
451#ifndef HAVE_COMPARISON_FN_T
452typedef int (*comparison_fn_t)(const void *, const void *);
453#endif
454
455#ifdef REPLACE_STRPTIME
456#define strptime rep_strptime
457struct tm;
458char *rep_strptime(const char *buf, const char *format, struct tm *tm);
459#endif
460
461#ifndef HAVE_DUP2
462#define dup2 rep_dup2
463int rep_dup2(int oldfd, int newfd);
464#endif
465
466/* Load header file for dynamic linking stuff */
467#ifdef HAVE_DLFCN_H
468#include <dlfcn.h>
469#endif
470
471#ifndef RTLD_LAZY
472#define RTLD_LAZY 0
473#endif
474#ifndef RTLD_NOW
475#define RTLD_NOW 0
476#endif
477#ifndef RTLD_GLOBAL
478#define RTLD_GLOBAL 0
479#endif
480
481#ifndef HAVE_SECURE_MKSTEMP
482#define mkstemp(path) rep_mkstemp(path)
483int rep_mkstemp(char *temp);
484#endif
485
486#ifndef HAVE_MKDTEMP
487#define mkdtemp rep_mkdtemp
488char *rep_mkdtemp(char *template);
489#endif
490
491#ifndef HAVE_PREAD
492#define pread rep_pread
493ssize_t rep_pread(int __fd, void *__buf, size_t __nbytes, off_t __offset);
494#define LIBREPLACE_PREAD_REPLACED 1
495#else
496#define LIBREPLACE_PREAD_NOT_REPLACED 1
497#endif
498
499#ifndef HAVE_PWRITE
500#define pwrite rep_pwrite
501ssize_t rep_pwrite(int __fd, const void *__buf, size_t __nbytes, off_t __offset);
502#define LIBREPLACE_PWRITE_REPLACED 1
503#else
504#define LIBREPLACE_PWRITE_NOT_REPLACED 1
505#endif
506
507#if !defined(HAVE_INET_NTOA) || defined(REPLACE_INET_NTOA)
508#define inet_ntoa rep_inet_ntoa
509/* prototype is in "system/network.h" */
510#endif
511
512#ifndef HAVE_INET_PTON
513#define inet_pton rep_inet_pton
514/* prototype is in "system/network.h" */
515#endif
516
517#ifndef HAVE_INET_NTOP
518#define inet_ntop rep_inet_ntop
519/* prototype is in "system/network.h" */
520#endif
521
522#ifndef HAVE_INET_ATON
523#define inet_aton rep_inet_aton
524/* prototype is in "system/network.h" */
525#endif
526
527#ifndef HAVE_CONNECT
528#define connect rep_connect
529/* prototype is in "system/network.h" */
530#endif
531
532#ifndef HAVE_GETHOSTBYNAME
533#define gethostbyname rep_gethostbyname
534/* prototype is in "system/network.h" */
535#endif
536
537#ifndef HAVE_GETIFADDRS
538#define getifaddrs rep_getifaddrs
539/* prototype is in "system/network.h" */
540#endif
541
542#ifndef HAVE_FREEIFADDRS
543#define freeifaddrs rep_freeifaddrs
544/* prototype is in "system/network.h" */
545#endif
546
547#ifndef HAVE_GET_CURRENT_DIR_NAME
548#define get_current_dir_name rep_get_current_dir_name
549char *rep_get_current_dir_name(void);
550#endif
551
552#if !defined(HAVE_STRERROR_R) || !defined(STRERROR_R_PROTO_COMPATIBLE)
553#undef strerror_r
554#define strerror_r rep_strerror_r
555int rep_strerror_r(int errnum, char *buf, size_t buflen);
556#endif
557
558#if !defined(HAVE_CLOCK_GETTIME)
559#define clock_gettime rep_clock_gettime
560#endif
561
562#ifdef HAVE_LIMITS_H
563#include <limits.h>
564#endif
565
566#ifdef HAVE_SYS_PARAM_H
567#include <sys/param.h>
568#endif
569
570/* The extra casts work around common compiler bugs. */
571#define _TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
572/* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
573 It is necessary at least when t == time_t. */
574#define _TYPE_MINIMUM(t) ((t) (_TYPE_SIGNED (t) \
575 ? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) : (t) 0))
576#define _TYPE_MAXIMUM(t) ((t) (~ (t) 0 - _TYPE_MINIMUM (t)))
577
578#ifndef UINT16_MAX
579#define UINT16_MAX 65535
580#endif
581
582#ifndef UINT32_MAX
583#define UINT32_MAX (4294967295U)
584#endif
585
586#ifndef UINT64_MAX
587#define UINT64_MAX ((uint64_t)-1)
588#endif
589
590#ifndef CHAR_BIT
591#define CHAR_BIT 8
592#endif
593
594#ifndef INT32_MAX
595#define INT32_MAX _TYPE_MAXIMUM(int32_t)
596#endif
597
598#ifdef HAVE_STDBOOL_H
599#include <stdbool.h>
600#endif
601
602#if !defined(HAVE_BOOL)
603#ifdef HAVE__Bool
604#define bool _Bool
605#else
606typedef int bool;
607#endif
608#endif
609
610#if !defined(HAVE_INTPTR_T)
611typedef long long intptr_t ;
612#endif
613
614#if !defined(HAVE_UINTPTR_T)
615typedef unsigned long long uintptr_t ;
616#endif
617
618#if !defined(HAVE_PTRDIFF_T)
619typedef unsigned long long ptrdiff_t ;
620#endif
621
622/*
623 * to prevent <rpcsvc/yp_prot.h> from doing a redefine of 'bool'
624 *
625 * IRIX, HPUX, MacOS 10 and Solaris need BOOL_DEFINED
626 * Tru64 needs _BOOL_EXISTS
627 * AIX needs _BOOL,_TRUE,_FALSE
628 */
629#ifndef BOOL_DEFINED
630#define BOOL_DEFINED
631#endif
632#ifndef _BOOL_EXISTS
633#define _BOOL_EXISTS
634#endif
635#ifndef _BOOL
636#define _BOOL
637#endif
638
639#ifndef __bool_true_false_are_defined
640#define __bool_true_false_are_defined
641#endif
642
643#ifndef true
644#define true (1)
645#endif
646#ifndef false
647#define false (0)
648#endif
649
650#ifndef _TRUE
651#define _TRUE true
652#endif
653#ifndef _FALSE
654#define _FALSE false
655#endif
656
657#ifndef HAVE_FUNCTION_MACRO
658#ifdef HAVE_func_MACRO
659#define __FUNCTION__ __func__
660#else
661#define __FUNCTION__ ("")
662#endif
663#endif
664
665
666#ifndef MIN
667#define MIN(a,b) ((a)<(b)?(a):(b))
668#endif
669
670#ifndef MAX
671#define MAX(a,b) ((a)>(b)?(a):(b))
672#endif
673
674#if !defined(HAVE_VOLATILE)
675#define volatile
676#endif
677
678/**
679 this is a warning hack. The idea is to use this everywhere that we
680 get the "discarding const" warning from gcc. That doesn't actually
681 fix the problem of course, but it means that when we do get to
682 cleaning them up we can do it by searching the code for
683 discard_const.
684
685 It also means that other error types aren't as swamped by the noise
686 of hundreds of const warnings, so we are more likely to notice when
687 we get new errors.
688
689 Please only add more uses of this macro when you find it
690 _really_ hard to fix const warnings. Our aim is to eventually use
691 this function in only a very few places.
692
693 Also, please call this via the discard_const_p() macro interface, as that
694 makes the return type safe.
695*/
696#define discard_const(ptr) ((void *)((uintptr_t)(ptr)))
697
698/** Type-safe version of discard_const */
699#define discard_const_p(type, ptr) ((type *)discard_const(ptr))
700
701#ifndef __STRING
702#define __STRING(x) #x
703#endif
704
705#ifndef __STRINGSTRING
706#define __STRINGSTRING(x) __STRING(x)
707#endif
708
709#ifndef __LINESTR__
710#define __LINESTR__ __STRINGSTRING(__LINE__)
711#endif
712
713#ifndef __location__
714#define __location__ __FILE__ ":" __LINESTR__
715#endif
716
717/**
718 * zero a structure
719 */
720#define ZERO_STRUCT(x) memset((char *)&(x), 0, sizeof(x))
721
722/**
723 * zero a structure given a pointer to the structure
724 */
725#define ZERO_STRUCTP(x) do { if ((x) != NULL) memset((char *)(x), 0, sizeof(*(x))); } while(0)
726
727/**
728 * zero a structure given a pointer to the structure - no zero check
729 */
730#define ZERO_STRUCTPN(x) memset((char *)(x), 0, sizeof(*(x)))
731
732/* zero an array - note that sizeof(array) must work - ie. it must not be a
733 pointer */
734#define ZERO_ARRAY(x) memset((char *)(x), 0, sizeof(x))
735
736/**
737 * work out how many elements there are in a static array
738 */
739#define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
740
741/**
742 * pointer difference macro
743 */
744#define PTR_DIFF(p1,p2) ((ptrdiff_t)(((const char *)(p1)) - (const char *)(p2)))
745
746#if MMAP_BLACKLIST
747#undef HAVE_MMAP
748#endif
749
750#ifdef __COMPAR_FN_T
751#define QSORT_CAST (__compar_fn_t)
752#endif
753
754#ifndef QSORT_CAST
755#define QSORT_CAST (int (*)(const void *, const void *))
756#endif
757
758#ifndef PATH_MAX
759#define PATH_MAX 1024
760#endif
761
762#ifndef MAX_DNS_NAME_LENGTH
763#define MAX_DNS_NAME_LENGTH 256 /* Actually 255 but +1 for terminating null. */
764#endif
765
766#ifndef HAVE_CRYPT
767char *ufc_crypt(const char *key, const char *salt);
768#define crypt ufc_crypt
769#else
770#ifdef HAVE_CRYPT_H
771#include <crypt.h>
772#endif
773#endif
774
775/* these macros gain us a few percent of speed on gcc */
776#if (__GNUC__ >= 3)
777/* the strange !! is to ensure that __builtin_expect() takes either 0 or 1
778 as its first argument */
779#ifndef likely
780#define likely(x) __builtin_expect(!!(x), 1)
781#endif
782#ifndef unlikely
783#define unlikely(x) __builtin_expect(!!(x), 0)
784#endif
785#else
786#ifndef likely
787#define likely(x) (x)
788#endif
789#ifndef unlikely
790#define unlikely(x) (x)
791#endif
792#endif
793
794#ifndef HAVE_FDATASYNC
795#define fdatasync(fd) fsync(fd)
796#elif !defined(HAVE_DECL_FDATASYNC)
797int fdatasync(int );
798#endif
799
800/* these are used to mark symbols as local to a shared lib, or
801 * publicly available via the shared lib API */
802#ifndef _PUBLIC_
803#ifdef HAVE_VISIBILITY_ATTR
804#define _PUBLIC_ __attribute__((visibility("default")))
805#else
806#define _PUBLIC_
807#endif
808#endif
809
810#ifndef _PRIVATE_
811#ifdef HAVE_VISIBILITY_ATTR
812# define _PRIVATE_ __attribute__((visibility("hidden")))
813#else
814# define _PRIVATE_
815#endif
816#endif
817
818#ifndef HAVE_POLL
819#define poll rep_poll
820/* prototype is in "system/network.h" */
821#endif
822
823#if !defined(getpass)
824#ifdef REPLACE_GETPASS
825#if defined(REPLACE_GETPASS_BY_GETPASSPHRASE)
826#define getpass(prompt) getpassphrase(prompt)
827#else
828#define getpass(prompt) rep_getpass(prompt)
829char *rep_getpass(const char *prompt);
830#endif
831#endif
832#endif
833
834#endif /* _LIBREPLACE_REPLACE_H */
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