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
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
35 #ifdef HAVE_STANDARDS_H
36 #include <standards.h>
44 #if defined(_MSC_VER) || defined(__MINGW32__)
45 #include "win32_replace.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
55 #define __STDC_FORMAT_MACROS
63 #ifndef __PRI64_PREFIX
65 # define __PRI64_PREFIX "l"
67 # define __PRI64_PREFIX "ll"
71 /* Decimal notation. */
82 # define PRId64 __PRI64_PREFIX "d"
95 # define PRIi64 __PRI64_PREFIX "i"
108 # define PRIu64 __PRI64_PREFIX "u"
111 #ifdef HAVE_BSD_STRING_H
112 #include <bsd/string.h>
119 #ifdef HAVE_STRINGS_H
123 #ifdef HAVE_SYS_TYPES_H
124 #include <sys/types.h>
132 #ifdef HAVE_LINUX_TYPES_H
134 * This is needed as some broken header files require this to be included early
136 #include <linux/types.h>
139 #ifndef HAVE_STRERROR
140 extern char *sys_errlist[];
141 #define strerror(i) sys_errlist[i]
144 #ifndef HAVE_ERRNO_DECL
149 #define strdup rep_strdup
150 char *rep_strdup(const char *s);
154 #define memmove rep_memmove
155 void *rep_memmove(void *dest,const void *src,int size);
159 #define memmem rep_memmem
160 void *rep_memmem(const void *haystack, size_t haystacklen,
161 const void *needle, size_t needlelen);
164 #ifndef HAVE_MEMALIGN
165 #define memalign rep_memalign
166 void *rep_memalign(size_t boundary, size_t size);
170 #define mktime rep_mktime
171 /* prototype is in "system/time.h" */
175 #define timegm rep_timegm
176 /* prototype is in "system/time.h" */
180 #define utime rep_utime
181 /* prototype is in "system/time.h" */
185 #define utimes rep_utimes
186 /* prototype is in "system/time.h" */
190 #define strlcpy rep_strlcpy
191 size_t rep_strlcpy(char *d, const char *s, size_t bufsize);
195 #define strlcat rep_strlcat
196 size_t rep_strlcat(char *d, const char *s, size_t bufsize);
199 #if (defined(BROKEN_STRNDUP) || !defined(HAVE_STRNDUP))
201 #define strndup rep_strndup
202 char *rep_strndup(const char *s, size_t n);
205 #if (defined(BROKEN_STRNLEN) || !defined(HAVE_STRNLEN))
207 #define strnlen rep_strnlen
208 size_t rep_strnlen(const char *s, size_t n);
211 #if !HAVE_DECL_ENVIRON
213 #include <crt_externs.h>
214 #define environ (*_NSGetEnviron())
216 extern char **environ;
221 #define setenv rep_setenv
222 int rep_setenv(const char *name, const char *value, int overwrite);
224 #ifndef HAVE_SETENV_DECL
225 int setenv(const char *name, const char *value, int overwrite);
229 #ifndef HAVE_UNSETENV
230 #define unsetenv rep_unsetenv
231 int rep_unsetenv(const char *name);
235 #define seteuid rep_seteuid
236 int rep_seteuid(uid_t);
240 #define setegid rep_setegid
241 int rep_setegid(gid_t);
244 #if (defined(USE_SETRESUID) && !defined(HAVE_SETRESUID_DECL))
246 int setresuid(uid_t ruid, uid_t euid, uid_t suid);
248 #if (defined(USE_SETRESUID) && !defined(HAVE_SETRESGID_DECL))
249 int setresgid(gid_t rgid, gid_t egid, gid_t sgid);
253 #define chown rep_chown
254 int rep_chown(const char *path, uid_t uid, gid_t gid);
258 #define chroot rep_chroot
259 int rep_chroot(const char *dirname);
263 #define link rep_link
264 int rep_link(const char *oldpath, const char *newpath);
267 #ifndef HAVE_READLINK
268 #define readlink rep_readlink
269 ssize_t rep_readlink(const char *path, char *buf, size_t bufsize);
273 #define symlink rep_symlink
274 int rep_symlink(const char *oldpath, const char *newpath);
277 #ifndef HAVE_REALPATH
278 #define realpath rep_realpath
279 char *rep_realpath(const char *path, char *resolved_path);
283 #define lchown rep_lchown
284 int rep_lchown(const char *fname,uid_t uid,gid_t gid);
291 #ifndef HAVE_SETLINEBUF
292 #define setlinebuf rep_setlinebuf
293 void rep_setlinebuf(FILE *);
296 #ifndef HAVE_STRCASESTR
297 #define strcasestr rep_strcasestr
298 char *rep_strcasestr(const char *haystack, const char *needle);
301 #ifndef HAVE_STRTOK_R
302 #define strtok_r rep_strtok_r
303 char *rep_strtok_r(char *s, const char *delim, char **save_ptr);
309 #define strtoll rep_strtoll
310 long long int rep_strtoll(const char *str, char **endptr, int base);
312 #ifdef HAVE_BSD_STRTOLL
313 #define strtoll rep_strtoll
314 long long int rep_strtoll(const char *str, char **endptr, int base);
318 #ifndef HAVE_STRTOULL
319 #define strtoull rep_strtoull
320 unsigned long long int rep_strtoull(const char *str, char **endptr, int base);
322 #ifdef HAVE_BSD_STRTOLL /* yes, it's not HAVE_BSD_STRTOULL */
323 #define strtoull rep_strtoull
324 unsigned long long int rep_strtoull(const char *str, char **endptr, int base);
328 #ifndef HAVE_FTRUNCATE
329 #define ftruncate rep_ftruncate
330 int rep_ftruncate(int,off_t);
333 #ifndef HAVE_INITGROUPS
334 #define initgroups rep_initgroups
335 int rep_initgroups(char *name, gid_t id);
338 #if !defined(HAVE_BZERO) && defined(HAVE_MEMSET)
339 #define bzero(a,b) memset((a),'\0',(b))
343 #define dlerror rep_dlerror
344 char *rep_dlerror(void);
348 #define dlopen rep_dlopen
349 #ifdef DLOPEN_TAKES_UNSIGNED_FLAGS
350 void *rep_dlopen(const char *name, unsigned int flags);
352 void *rep_dlopen(const char *name, int flags);
357 #define dlsym rep_dlsym
358 void *rep_dlsym(void *handle, const char *symbol);
362 #define dlclose rep_dlclose
363 int rep_dlclose(void *handle);
366 #ifndef HAVE_SOCKETPAIR
367 #define socketpair rep_socketpair
368 /* prototype is in system/network.h */
371 #ifndef HAVE_VDPRINTF
372 #define vdprintf rep_vdprintf
373 int rep_vdprintf(int fd, const char *format, va_list ap);
377 #define dprintf rep_dprintf
378 int rep_dprintf(int fd, const char *format, ...);
381 #ifndef PRINTF_ATTRIBUTE
382 #if (__GNUC__ >= 3) && (__GNUC_MINOR__ >= 1 )
383 /** Use gcc attribute to check printf fns. a1 is the 1-based index of
384 * the parameter containing the format, and a2 the index of the first
385 * argument. Note that some gcc 2.x versions don't handle this
387 #define PRINTF_ATTRIBUTE(a1, a2) __attribute__ ((format (__printf__, a1, a2)))
389 #define PRINTF_ATTRIBUTE(a1, a2)
394 #if (__GNUC__ >= 3) && (__GNUC_MINOR__ >= 1 )
395 #define _DEPRECATED_ __attribute__ ((deprecated))
401 #ifndef HAVE_VASPRINTF
402 #define vasprintf rep_vasprintf
403 int rep_vasprintf(char **ptr, const char *format, va_list ap) PRINTF_ATTRIBUTE(2,0);
406 #if !defined(HAVE_SNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
407 #define snprintf rep_snprintf
408 int rep_snprintf(char *,size_t ,const char *, ...) PRINTF_ATTRIBUTE(3,4);
411 #if !defined(HAVE_VSNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
412 #define vsnprintf rep_vsnprintf
413 int rep_vsnprintf(char *,size_t ,const char *, va_list ap) PRINTF_ATTRIBUTE(3,0);
416 #ifndef HAVE_ASPRINTF
417 #define asprintf rep_asprintf
418 int rep_asprintf(char **,const char *, ...) PRINTF_ATTRIBUTE(2,3);
423 #define vsyslog rep_vsyslog
424 void rep_vsyslog (int facility_priority, const char *format, va_list arglist) PRINTF_ATTRIBUTE(2,0);
428 /* we used to use these fns, but now we have good replacements
429 for snprintf and vsnprintf */
430 #define slprintf snprintf
435 #ifdef HAVE___VA_COPY
436 #define va_copy(dest, src) __va_copy(dest, src)
438 #define va_copy(dest, src) (dest) = (src)
442 #ifndef HAVE_VOLATILE
446 #ifndef HAVE_COMPARISON_FN_T
447 typedef int (*comparison_fn_t)(const void *, const void *);
450 #ifdef REPLACE_STRPTIME
451 #define strptime rep_strptime
453 char *rep_strptime(const char *buf, const char *format, struct tm *tm);
457 #define dup2 rep_dup2
458 int rep_dup2(int oldfd, int newfd);
461 /* Load header file for dynamic linking stuff */
473 #define RTLD_GLOBAL 0
476 #ifndef HAVE_SECURE_MKSTEMP
477 #define mkstemp(path) rep_mkstemp(path)
478 int rep_mkstemp(char *temp);
482 #define mkdtemp rep_mkdtemp
483 char *rep_mkdtemp(char *template);
487 #define pread rep_pread
488 ssize_t rep_pread(int __fd, void *__buf, size_t __nbytes, off_t __offset);
489 #define LIBREPLACE_PREAD_REPLACED 1
491 #define LIBREPLACE_PREAD_NOT_REPLACED 1
495 #define pwrite rep_pwrite
496 ssize_t rep_pwrite(int __fd, const void *__buf, size_t __nbytes, off_t __offset);
497 #define LIBREPLACE_PWRITE_REPLACED 1
499 #define LIBREPLACE_PWRITE_NOT_REPLACED 1
502 #if !defined(HAVE_INET_NTOA) || defined(REPLACE_INET_NTOA)
503 #define inet_ntoa rep_inet_ntoa
504 /* prototype is in "system/network.h" */
507 #ifndef HAVE_INET_PTON
508 #define inet_pton rep_inet_pton
509 /* prototype is in "system/network.h" */
512 #ifndef HAVE_INET_NTOP
513 #define inet_ntop rep_inet_ntop
514 /* prototype is in "system/network.h" */
517 #ifndef HAVE_INET_ATON
518 #define inet_aton rep_inet_aton
519 /* prototype is in "system/network.h" */
523 #define connect rep_connect
524 /* prototype is in "system/network.h" */
527 #ifndef HAVE_GETHOSTBYNAME
528 #define gethostbyname rep_gethostbyname
529 /* prototype is in "system/network.h" */
532 #ifndef HAVE_GETIFADDRS
533 #define getifaddrs rep_getifaddrs
534 /* prototype is in "system/network.h" */
537 #ifndef HAVE_FREEIFADDRS
538 #define freeifaddrs rep_freeifaddrs
539 /* prototype is in "system/network.h" */
542 #ifndef HAVE_GET_CURRENT_DIR_NAME
543 #define get_current_dir_name rep_get_current_dir_name
544 char *rep_get_current_dir_name(void);
547 #if !defined(HAVE_STRERROR_R) || !defined(STRERROR_R_PROTO_COMPATIBLE)
549 #define strerror_r rep_strerror_r
550 int rep_strerror_r(int errnum, char *buf, size_t buflen);
553 #if !defined(HAVE_CLOCK_GETTIME)
554 #define clock_gettime rep_clock_gettime
561 #ifdef HAVE_SYS_PARAM_H
562 #include <sys/param.h>
565 /* The extra casts work around common compiler bugs. */
566 #define _TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
567 /* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
568 It is necessary at least when t == time_t. */
569 #define _TYPE_MINIMUM(t) ((t) (_TYPE_SIGNED (t) \
570 ? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) : (t) 0))
571 #define _TYPE_MAXIMUM(t) ((t) (~ (t) 0 - _TYPE_MINIMUM (t)))
574 #define UINT16_MAX 65535
578 #define UINT32_MAX (4294967295U)
582 #define UINT64_MAX ((uint64_t)-1)
590 #define INT32_MAX _TYPE_MAXIMUM(int32_t)
593 #ifdef HAVE_STDBOOL_H
597 #if !defined(HAVE_BOOL)
605 #if !defined(HAVE_INTPTR_T)
606 typedef long long intptr_t ;
609 #if !defined(HAVE_UINTPTR_T)
610 typedef unsigned long long uintptr_t ;
613 #if !defined(HAVE_PTRDIFF_T)
614 typedef unsigned long long ptrdiff_t ;
618 * to prevent <rpcsvc/yp_prot.h> from doing a redefine of 'bool'
620 * IRIX, HPUX, MacOS 10 and Solaris need BOOL_DEFINED
621 * Tru64 needs _BOOL_EXISTS
622 * AIX needs _BOOL,_TRUE,_FALSE
634 #ifndef __bool_true_false_are_defined
635 #define __bool_true_false_are_defined
652 #ifndef HAVE_FUNCTION_MACRO
653 #ifdef HAVE_func_MACRO
654 #define __FUNCTION__ __func__
656 #define __FUNCTION__ ("")
662 #define MIN(a,b) ((a)<(b)?(a):(b))
666 #define MAX(a,b) ((a)>(b)?(a):(b))
669 #if !defined(HAVE_VOLATILE)
674 this is a warning hack. The idea is to use this everywhere that we
675 get the "discarding const" warning from gcc. That doesn't actually
676 fix the problem of course, but it means that when we do get to
677 cleaning them up we can do it by searching the code for
680 It also means that other error types aren't as swamped by the noise
681 of hundreds of const warnings, so we are more likely to notice when
684 Please only add more uses of this macro when you find it
685 _really_ hard to fix const warnings. Our aim is to eventually use
686 this function in only a very few places.
688 Also, please call this via the discard_const_p() macro interface, as that
689 makes the return type safe.
691 #define discard_const(ptr) ((void *)((uintptr_t)(ptr)))
693 /** Type-safe version of discard_const */
694 #define discard_const_p(type, ptr) ((type *)discard_const(ptr))
697 #define __STRING(x) #x
700 #ifndef __STRINGSTRING
701 #define __STRINGSTRING(x) __STRING(x)
705 #define __LINESTR__ __STRINGSTRING(__LINE__)
709 #define __location__ __FILE__ ":" __LINESTR__
715 #define ZERO_STRUCT(x) memset((char *)&(x), 0, sizeof(x))
718 * zero a structure given a pointer to the structure
720 #define ZERO_STRUCTP(x) do { if ((x) != NULL) memset((char *)(x), 0, sizeof(*(x))); } while(0)
723 * zero a structure given a pointer to the structure - no zero check
725 #define ZERO_STRUCTPN(x) memset((char *)(x), 0, sizeof(*(x)))
727 /* zero an array - note that sizeof(array) must work - ie. it must not be a
729 #define ZERO_ARRAY(x) memset((char *)(x), 0, sizeof(x))
732 * work out how many elements there are in a static array
734 #define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
737 * pointer difference macro
739 #define PTR_DIFF(p1,p2) ((ptrdiff_t)(((const char *)(p1)) - (const char *)(p2)))
746 #define QSORT_CAST (__compar_fn_t)
750 #define QSORT_CAST (int (*)(const void *, const void *))
754 #define PATH_MAX 1024
757 #ifndef MAX_DNS_NAME_LENGTH
758 #define MAX_DNS_NAME_LENGTH 256 /* Actually 255 but +1 for terminating null. */
762 char *ufc_crypt(const char *key, const char *salt);
763 #define crypt ufc_crypt
770 /* these macros gain us a few percent of speed on gcc */
772 /* the strange !! is to ensure that __builtin_expect() takes either 0 or 1
773 as its first argument */
775 #define likely(x) __builtin_expect(!!(x), 1)
778 #define unlikely(x) __builtin_expect(!!(x), 0)
782 #define likely(x) (x)
785 #define unlikely(x) (x)
789 #ifndef HAVE_FDATASYNC
790 #define fdatasync(fd) fsync(fd)
791 #elif !defined(HAVE_DECL_FDATASYNC)
795 /* these are used to mark symbols as local to a shared lib, or
796 * publicly available via the shared lib API */
798 #ifdef HAVE_VISIBILITY_ATTR
799 #define _PUBLIC_ __attribute__((visibility("default")))
806 #ifdef HAVE_VISIBILITY_ATTR
807 # define _PRIVATE_ __attribute__((visibility("hidden")))
814 #define poll rep_poll
815 /* prototype is in "system/network.h" */
818 #if !defined(getpass)
819 #ifdef REPLACE_GETPASS
820 #if defined(REPLACE_GETPASS_BY_GETPASSPHRASE)
821 #define getpass(prompt) getpassphrase(prompt)
823 #define getpass(prompt) rep_getpass(prompt)
824 char *rep_getpass(const char *prompt);
829 #endif /* _LIBREPLACE_REPLACE_H */