lib/replace/replace.h

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