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 /* Needs to be defined before std*.h and string*.h are included */
  40 #define __STDC_WANT_LIB_EXT1__ 1
  41
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <stdarg.h>
  45 #include <errno.h>
  46
  47 #ifndef HAVE_DECL_EWOULDBLOCK
  48 #define EWOULDBLOCK EAGAIN
  49 #endif
  50
  51 #if defined(_MSC_VER) || defined(__MINGW32__)
  52 #include "win32_replace.h"
  53 #endif
  54
  55
  56 #ifdef HAVE_INTTYPES_H
  57 #define __STDC_FORMAT_MACROS
  58 #include <inttypes.h>
  59 #elif HAVE_STDINT_H
  60 #include <stdint.h>
  61 /* force off HAVE_INTTYPES_H so that roken doesn't try to include both,
  62    which causes a warning storm on irix */
  63 #undef HAVE_INTTYPES_H
  64 #endif
  65
  66 #ifdef HAVE_MALLOC_H
  67 #include <malloc.h>
  68 #endif
  69
  70 #ifndef __PRI64_PREFIX
  71 # if __WORDSIZE == 64 && ! defined __APPLE__
  72 #  define __PRI64_PREFIX        "l"
  73 # else
  74 #  define __PRI64_PREFIX        "ll"
  75 # endif
  76 #endif
  77
  78 /* Decimal notation.  */
  79 #ifndef PRId8
  80 # define PRId8          "d"
  81 #endif
  82 #ifndef PRId16
  83 # define PRId16         "d"
  84 #endif
  85 #ifndef PRId32
  86 # define PRId32         "d"
  87 #endif
  88 #ifndef PRId64
  89 # define PRId64         __PRI64_PREFIX "d"
  90 #endif
  91
  92 #ifndef PRIi8
  93 # define PRIi8          "i"
  94 #endif
  95 #ifndef PRIi16
  96 # define PRIi16         "i"
  97 #endif
  98 #ifndef PRIi32
  99 # define PRIi32         "i"
 100 #endif
 101 #ifndef PRIi64
 102 # define PRIi64         __PRI64_PREFIX "i"
 103 #endif
 104
 105 #ifndef PRIu8
 106 # define PRIu8          "u"
 107 #endif
 108 #ifndef PRIu16
 109 # define PRIu16         "u"
 110 #endif
 111 #ifndef PRIu32
 112 # define PRIu32         "u"
 113 #endif
 114 #ifndef PRIu64
 115 # define PRIu64         __PRI64_PREFIX "u"
 116 #endif
 117
 118 #ifndef SCNd8
 119 # define SCNd8          "hhd"
 120 #endif
 121 #ifndef SCNd16
 122 # define SCNd16         "hd"
 123 #endif
 124 #ifndef SCNd32
 125 # define SCNd32         "d"
 126 #endif
 127 #ifndef SCNd64
 128 # define SCNd64         __PRI64_PREFIX "d"
 129 #endif
 130
 131 #ifndef SCNi8
 132 # define SCNi8          "hhi"
 133 #endif
 134 #ifndef SCNi16
 135 # define SCNi16         "hi"
 136 #endif
 137 #ifndef SCNi32
 138 # define SCNi32         "i"
 139 #endif
 140 #ifndef SCNi64
 141 # define SCNi64         __PRI64_PREFIX "i"
 142 #endif
 143
 144 #ifndef SCNu8
 145 # define SCNu8          "hhu"
 146 #endif
 147 #ifndef SCNu16
 148 # define SCNu16         "hu"
 149 #endif
 150 #ifndef SCNu32
 151 # define SCNu32         "u"
 152 #endif
 153 #ifndef SCNu64
 154 # define SCNu64         __PRI64_PREFIX "u"
 155 #endif
 156
 157 #ifdef HAVE_BSD_STRING_H
 158 #include <bsd/string.h>
 159 #endif
 160
 161 #ifdef HAVE_BSD_UNISTD_H
 162 #include <bsd/unistd.h>
 163 #endif
 164
 165 #ifdef HAVE_STRING_H
 166 #include <string.h>
 167 #endif
 168
 169 #ifdef HAVE_STRINGS_H
 170 #include <strings.h>
 171 #endif
 172
 173 #ifdef HAVE_SYS_TYPES_H
 174 #include <sys/types.h>
 175 #endif
 176
 177 #ifdef HAVE_SYS_SYSMACROS_H
 178 #include <sys/sysmacros.h>
 179 #endif
 180
 181 #ifdef HAVE_SETPROCTITLE_H
 182 #include <setproctitle.h>
 183 #endif
 184
 185 #if STDC_HEADERS
 186 #include <stdlib.h>
 187 #include <stddef.h>
 188 #endif
 189
 190 #ifdef HAVE_LINUX_TYPES_H
 191 /*
 192  * This is needed as some broken header files require this to be included early
 193  */
 194 #include <linux/types.h>
 195 #endif
 196
 197 #ifndef HAVE_STRERROR
 198 extern char *sys_errlist[];
 199 #define strerror(i) sys_errlist[i]
 200 #endif
 201
 202 #ifndef HAVE_ERRNO_DECL
 203 extern int errno;
 204 #endif
 205
 206 #ifndef HAVE_STRDUP
 207 #define strdup rep_strdup
 208 char *rep_strdup(const char *s);
 209 #endif
 210
 211 #ifndef HAVE_MEMMOVE
 212 #define memmove rep_memmove
 213 void *rep_memmove(void *dest,const void *src,int size);
 214 #endif
 215
 216 #ifndef HAVE_MEMMEM
 217 #define memmem rep_memmem
 218 void *rep_memmem(const void *haystack, size_t haystacklen,
 219                  const void *needle, size_t needlelen);
 220 #endif
 221
 222 #ifndef HAVE_MEMALIGN
 223 #define memalign rep_memalign
 224 void *rep_memalign(size_t boundary, size_t size);
 225 #endif
 226
 227 #ifndef HAVE_MKTIME
 228 #define mktime rep_mktime
 229 /* prototype is in "system/time.h" */
 230 #endif
 231
 232 #ifndef HAVE_TIMEGM
 233 #define timegm rep_timegm
 234 /* prototype is in "system/time.h" */
 235 #endif
 236
 237 #ifndef HAVE_UTIME
 238 #define utime rep_utime
 239 /* prototype is in "system/time.h" */
 240 #endif
 241
 242 #ifndef HAVE_UTIMES
 243 #define utimes rep_utimes
 244 /* prototype is in "system/time.h" */
 245 #endif
 246
 247 #ifndef HAVE_STRLCPY
 248 #define strlcpy rep_strlcpy
 249 size_t rep_strlcpy(char *d, const char *s, size_t bufsize);
 250 #endif
 251
 252 #ifndef HAVE_STRLCAT
 253 #define strlcat rep_strlcat
 254 size_t rep_strlcat(char *d, const char *s, size_t bufsize);
 255 #endif
 256
 257 #ifndef HAVE_CLOSEFROM
 258 #define closefrom rep_closefrom
 259 int rep_closefrom(int lower);
 260 #endif
 261
 262
 263 #if (defined(BROKEN_STRNDUP) || !defined(HAVE_STRNDUP))
 264 #undef HAVE_STRNDUP
 265 #define strndup rep_strndup
 266 char *rep_strndup(const char *s, size_t n);
 267 #endif
 268
 269 #if (defined(BROKEN_STRNLEN) || !defined(HAVE_STRNLEN))
 270 #undef HAVE_STRNLEN
 271 #define strnlen rep_strnlen
 272 size_t rep_strnlen(const char *s, size_t n);
 273 #endif
 274
 275 #if !HAVE_DECL_ENVIRON
 276 #ifdef __APPLE__
 277 #include <crt_externs.h>
 278 #define environ (*_NSGetEnviron())
 279 #else
 280 extern char **environ;
 281 #endif
 282 #endif
 283
 284 #ifndef HAVE_SETENV
 285 #define setenv rep_setenv
 286 int rep_setenv(const char *name, const char *value, int overwrite);
 287 #else
 288 #ifndef HAVE_SETENV_DECL
 289 int setenv(const char *name, const char *value, int overwrite);
 290 #endif
 291 #endif
 292
 293 #ifndef HAVE_UNSETENV
 294 #define unsetenv rep_unsetenv
 295 int rep_unsetenv(const char *name);
 296 #endif
 297
 298 #ifndef HAVE_SETEUID
 299 #define seteuid rep_seteuid
 300 int rep_seteuid(uid_t);
 301 #endif
 302
 303 #ifndef HAVE_SETEGID
 304 #define setegid rep_setegid
 305 int rep_setegid(gid_t);
 306 #endif
 307
 308 #if (defined(USE_SETRESUID) && !defined(HAVE_SETRESUID_DECL))
 309 /* stupid glibc */
 310 int setresuid(uid_t ruid, uid_t euid, uid_t suid);
 311 #endif
 312 #if (defined(USE_SETRESUID) && !defined(HAVE_SETRESGID_DECL))
 313 int setresgid(gid_t rgid, gid_t egid, gid_t sgid);
 314 #endif
 315
 316 #ifndef HAVE_CHOWN
 317 #define chown rep_chown
 318 int rep_chown(const char *path, uid_t uid, gid_t gid);
 319 #endif
 320
 321 #ifndef HAVE_CHROOT
 322 #define chroot rep_chroot
 323 int rep_chroot(const char *dirname);
 324 #endif
 325
 326 #ifndef HAVE_LINK
 327 #define link rep_link
 328 int rep_link(const char *oldpath, const char *newpath);
 329 #endif
 330
 331 #ifndef HAVE_READLINK
 332 #define readlink rep_readlink
 333 ssize_t rep_readlink(const char *path, char *buf, size_t bufsize);
 334 #endif
 335
 336 #ifndef HAVE_SYMLINK
 337 #define symlink rep_symlink
 338 int rep_symlink(const char *oldpath, const char *newpath);
 339 #endif
 340
 341 #ifndef HAVE_REALPATH
 342 #define realpath rep_realpath
 343 char *rep_realpath(const char *path, char *resolved_path);
 344 #endif
 345
 346 #ifndef HAVE_LCHOWN
 347 #define lchown rep_lchown
 348 int rep_lchown(const char *fname,uid_t uid,gid_t gid);
 349 #endif
 350
 351 #ifdef HAVE_UNIX_H
 352 #include <unix.h>
 353 #endif
 354
 355 #ifndef HAVE_SETLINEBUF
 356 #define setlinebuf rep_setlinebuf
 357 void rep_setlinebuf(FILE *);
 358 #endif
 359
 360 #ifndef HAVE_STRCASESTR
 361 #define strcasestr rep_strcasestr
 362 char *rep_strcasestr(const char *haystack, const char *needle);
 363 #endif
 364
 365 #ifndef HAVE_STRSEP
 366 #define strsep rep_strsep
 367 char *rep_strsep(char **pps, const char *delim);
 368 #endif
 369
 370 #ifndef HAVE_STRTOK_R
 371 #define strtok_r rep_strtok_r
 372 char *rep_strtok_r(char *s, const char *delim, char **save_ptr);
 373 #endif
 374
 375
 376
 377 #ifndef HAVE_STRTOLL
 378 #define strtoll rep_strtoll
 379 long long int rep_strtoll(const char *str, char **endptr, int base);
 380 #else
 381 #ifdef HAVE_BSD_STRTOLL
 382 #define strtoll rep_strtoll
 383 long long int rep_strtoll(const char *str, char **endptr, int base);
 384 #endif
 385 #endif
 386
 387 #ifndef HAVE_STRTOULL
 388 #define strtoull rep_strtoull
 389 unsigned long long int rep_strtoull(const char *str, char **endptr, int base);
 390 #else
 391 #ifdef HAVE_BSD_STRTOLL /* yes, it's not HAVE_BSD_STRTOULL */
 392 #define strtoull rep_strtoull
 393 unsigned long long int rep_strtoull(const char *str, char **endptr, int base);
 394 #endif
 395 #endif
 396
 397 #ifndef HAVE_FTRUNCATE
 398 #define ftruncate rep_ftruncate
 399 int rep_ftruncate(int,off_t);
 400 #endif
 401
 402 #ifndef HAVE_INITGROUPS
 403 #define initgroups rep_initgroups
 404 int rep_initgroups(char *name, gid_t id);
 405 #endif
 406
 407 #if !defined(HAVE_BZERO) && defined(HAVE_MEMSET)
 408 #define bzero(a,b) memset((a),'\0',(b))
 409 #endif
 410
 411 #ifndef HAVE_DLERROR
 412 #define dlerror rep_dlerror
 413 char *rep_dlerror(void);
 414 #endif
 415
 416 #ifndef HAVE_DLOPEN
 417 #define dlopen rep_dlopen
 418 #ifdef DLOPEN_TAKES_UNSIGNED_FLAGS
 419 void *rep_dlopen(const char *name, unsigned int flags);
 420 #else
 421 void *rep_dlopen(const char *name, int flags);
 422 #endif
 423 #endif
 424
 425 #ifndef HAVE_DLSYM
 426 #define dlsym rep_dlsym
 427 void *rep_dlsym(void *handle, const char *symbol);
 428 #endif
 429
 430 #ifndef HAVE_DLCLOSE
 431 #define dlclose rep_dlclose
 432 int rep_dlclose(void *handle);
 433 #endif
 434
 435 #ifndef HAVE_SOCKETPAIR
 436 #define socketpair rep_socketpair
 437 /* prototype is in system/network.h */
 438 #endif
 439
 440 #ifndef PRINTF_ATTRIBUTE
 441 #ifdef HAVE___ATTRIBUTE__
 442 /** Use gcc attribute to check printf fns.  a1 is the 1-based index of
 443  * the parameter containing the format, and a2 the index of the first
 444  * argument. Note that some gcc 2.x versions don't handle this
 445  * properly **/
 446 #define PRINTF_ATTRIBUTE(a1, a2) __attribute__ ((format (__printf__, a1, a2)))
 447 #else
 448 #define PRINTF_ATTRIBUTE(a1, a2)
 449 #endif
 450 #endif
 451
 452 #ifndef _DEPRECATED_
 453 #ifdef HAVE___ATTRIBUTE__
 454 #define _DEPRECATED_ __attribute__ ((deprecated))
 455 #else
 456 #define _DEPRECATED_
 457 #endif
 458 #endif
 459
 460 #if !defined(HAVE_VDPRINTF) || !defined(HAVE_C99_VSNPRINTF)
 461 #define vdprintf rep_vdprintf
 462 int rep_vdprintf(int fd, const char *format, va_list ap) PRINTF_ATTRIBUTE(2,0);
 463 #endif
 464
 465 #if !defined(HAVE_DPRINTF) || !defined(HAVE_C99_VSNPRINTF)
 466 #define dprintf rep_dprintf
 467 int rep_dprintf(int fd, const char *format, ...) PRINTF_ATTRIBUTE(2,3);
 468 #endif
 469
 470 #if !defined(HAVE_VASPRINTF) || !defined(HAVE_C99_VSNPRINTF)
 471 #define vasprintf rep_vasprintf
 472 int rep_vasprintf(char **ptr, const char *format, va_list ap) PRINTF_ATTRIBUTE(2,0);
 473 #endif
 474
 475 #if !defined(HAVE_SNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
 476 #define snprintf rep_snprintf
 477 int rep_snprintf(char *,size_t ,const char *, ...) PRINTF_ATTRIBUTE(3,4);
 478 #endif
 479
 480 #if !defined(HAVE_VSNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
 481 #define vsnprintf rep_vsnprintf
 482 int rep_vsnprintf(char *,size_t ,const char *, va_list ap) PRINTF_ATTRIBUTE(3,0);
 483 #endif
 484
 485 #if !defined(HAVE_ASPRINTF) || !defined(HAVE_C99_VSNPRINTF)
 486 #define asprintf rep_asprintf
 487 int rep_asprintf(char **,const char *, ...) PRINTF_ATTRIBUTE(2,3);
 488 #endif
 489
 490 #if !defined(HAVE_C99_VSNPRINTF)
 491 #ifdef REPLACE_BROKEN_PRINTF
 492 /*
 493  * We do not redefine printf by default
 494  * as it breaks the build if system headers
 495  * use __attribute__((format(printf, 3, 0)))
 496  * instead of __attribute__((format(__printf__, 3, 0)))
 497  */
 498 #define printf rep_printf
 499 #endif
 500 int rep_printf(const char *, ...) PRINTF_ATTRIBUTE(1,2);
 501 #endif
 502
 503 #if !defined(HAVE_C99_VSNPRINTF)
 504 #define fprintf rep_fprintf
 505 int rep_fprintf(FILE *stream, const char *, ...) PRINTF_ATTRIBUTE(2,3);
 506 #endif
 507
 508 #ifndef HAVE_VSYSLOG
 509 #ifdef HAVE_SYSLOG
 510 #define vsyslog rep_vsyslog
 511 void rep_vsyslog (int facility_priority, const char *format, va_list arglist) PRINTF_ATTRIBUTE(2,0);
 512 #endif
 513 #endif
 514
 515 /* we used to use these fns, but now we have good replacements
 516    for snprintf and vsnprintf */
 517 #define slprintf snprintf
 518
 519
 520 #ifndef HAVE_VA_COPY
 521 #undef va_copy
 522 #ifdef HAVE___VA_COPY
 523 #define va_copy(dest, src) __va_copy(dest, src)
 524 #else
 525 #define va_copy(dest, src) (dest) = (src)
 526 #endif
 527 #endif
 528
 529 #ifndef HAVE_VOLATILE
 530 #define volatile
 531 #endif
 532
 533 #ifndef HAVE_COMPARISON_FN_T
 534 typedef int (*comparison_fn_t)(const void *, const void *);
 535 #endif
 536
 537 #ifndef HAVE_WORKING_STRPTIME
 538 #define strptime rep_strptime
 539 struct tm;
 540 char *rep_strptime(const char *buf, const char *format, struct tm *tm);
 541 #endif
 542
 543 #ifndef HAVE_DUP2
 544 #define dup2 rep_dup2
 545 int rep_dup2(int oldfd, int newfd);
 546 #endif
 547
 548 /* Load header file for dynamic linking stuff */
 549 #ifdef HAVE_DLFCN_H
 550 #include <dlfcn.h>
 551 #endif
 552
 553 #ifndef RTLD_LAZY
 554 #define RTLD_LAZY 0
 555 #endif
 556 #ifndef RTLD_NOW
 557 #define RTLD_NOW 0
 558 #endif
 559 #ifndef RTLD_GLOBAL
 560 #define RTLD_GLOBAL 0
 561 #endif
 562
 563 #ifndef HAVE_SECURE_MKSTEMP
 564 #define mkstemp(path) rep_mkstemp(path)
 565 int rep_mkstemp(char *temp);
 566 #endif
 567
 568 #ifndef HAVE_MKDTEMP
 569 #define mkdtemp rep_mkdtemp
 570 char *rep_mkdtemp(char *template);
 571 #endif
 572
 573 #ifndef HAVE_PREAD
 574 #define pread rep_pread
 575 ssize_t rep_pread(int __fd, void *__buf, size_t __nbytes, off_t __offset);
 576 #define LIBREPLACE_PREAD_REPLACED 1
 577 #else
 578 #define LIBREPLACE_PREAD_NOT_REPLACED 1
 579 #endif
 580
 581 #ifndef HAVE_PWRITE
 582 #define pwrite rep_pwrite
 583 ssize_t rep_pwrite(int __fd, const void *__buf, size_t __nbytes, off_t __offset);
 584 #define LIBREPLACE_PWRITE_REPLACED 1
 585 #else
 586 #define LIBREPLACE_PWRITE_NOT_REPLACED 1
 587 #endif
 588
 589 #if !defined(HAVE_INET_NTOA) || defined(REPLACE_INET_NTOA)
 590 #define inet_ntoa rep_inet_ntoa
 591 /* prototype is in "system/network.h" */
 592 #endif
 593
 594 #ifndef HAVE_INET_PTON
 595 #define inet_pton rep_inet_pton
 596 /* prototype is in "system/network.h" */
 597 #endif
 598
 599 #ifndef HAVE_INET_NTOP
 600 #define inet_ntop rep_inet_ntop
 601 /* prototype is in "system/network.h" */
 602 #endif
 603
 604 #ifndef HAVE_INET_ATON
 605 #define inet_aton rep_inet_aton
 606 /* prototype is in "system/network.h" */
 607 #endif
 608
 609 #ifndef HAVE_CONNECT
 610 #define connect rep_connect
 611 /* prototype is in "system/network.h" */
 612 #endif
 613
 614 #ifndef HAVE_GETHOSTBYNAME
 615 #define gethostbyname rep_gethostbyname
 616 /* prototype is in "system/network.h" */
 617 #endif
 618
 619 #ifndef HAVE_GETIFADDRS
 620 #define getifaddrs rep_getifaddrs
 621 /* prototype is in "system/network.h" */
 622 #endif
 623
 624 #ifndef HAVE_FREEIFADDRS
 625 #define freeifaddrs rep_freeifaddrs
 626 /* prototype is in "system/network.h" */
 627 #endif
 628
 629 #ifndef HAVE_GET_CURRENT_DIR_NAME
 630 #define get_current_dir_name rep_get_current_dir_name
 631 char *rep_get_current_dir_name(void);
 632 #endif
 633
 634 #if (!defined(HAVE_STRERROR_R) || !defined(STRERROR_R_XSI_NOT_GNU))
 635 #define strerror_r rep_strerror_r
 636 int rep_strerror_r(int errnum, char *buf, size_t buflen);
 637 #endif
 638
 639 #if !defined(HAVE_CLOCK_GETTIME)
 640 #define clock_gettime rep_clock_gettime
 641 #endif
 642
 643 #ifdef HAVE_LIMITS_H
 644 #include <limits.h>
 645 #endif
 646
 647 #ifdef HAVE_SYS_PARAM_H
 648 #include <sys/param.h>
 649 #endif
 650
 651 /* The extra casts work around common compiler bugs.  */
 652 #define _TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
 653 /* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
 654    It is necessary at least when t == time_t.  */
 655 #define _TYPE_MINIMUM(t) ((t) (_TYPE_SIGNED (t) \
 656                               ? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) : (t) 0))
 657 #define _TYPE_MAXIMUM(t) ((t) (~ (t) 0 - _TYPE_MINIMUM (t)))
 658
 659 #ifndef UINT16_MAX
 660 #define UINT16_MAX 65535
 661 #endif
 662
 663 #ifndef UINT32_MAX
 664 #define UINT32_MAX (4294967295U)
 665 #endif
 666
 667 #ifndef UINT64_MAX
 668 #define UINT64_MAX ((uint64_t)-1)
 669 #endif
 670
 671 #ifndef INT64_MAX
 672 #define INT64_MAX 9223372036854775807LL
 673 #endif
 674
 675 #ifndef CHAR_BIT
 676 #define CHAR_BIT 8
 677 #endif
 678
 679 #ifndef INT32_MAX
 680 #define INT32_MAX _TYPE_MAXIMUM(int32_t)
 681 #endif
 682
 683 #ifdef HAVE_STDBOOL_H
 684 #include <stdbool.h>
 685 #endif
 686
 687 #if !defined(HAVE_BOOL)
 688 #ifdef HAVE__Bool
 689 #define bool _Bool
 690 #else
 691 typedef int bool;
 692 #endif
 693 #endif
 694
 695 #if !defined(HAVE_INTPTR_T)
 696 typedef long long intptr_t ;
 697 #define __intptr_t_defined
 698 #endif
 699
 700 #if !defined(HAVE_UINTPTR_T)
 701 typedef unsigned long long uintptr_t ;
 702 #define __uintptr_t_defined
 703 #endif
 704
 705 #if !defined(HAVE_PTRDIFF_T)
 706 typedef unsigned long long ptrdiff_t ;
 707 #endif
 708
 709 /*
 710  * to prevent <rpcsvc/yp_prot.h> from doing a redefine of 'bool'
 711  *
 712  * IRIX, HPUX, MacOS 10 and Solaris need BOOL_DEFINED
 713  * Tru64 needs _BOOL_EXISTS
 714  * AIX needs _BOOL,_TRUE,_FALSE
 715  */
 716 #ifndef BOOL_DEFINED
 717 #define BOOL_DEFINED
 718 #endif
 719 #ifndef _BOOL_EXISTS
 720 #define _BOOL_EXISTS
 721 #endif
 722 #ifndef _BOOL
 723 #define _BOOL
 724 #endif
 725
 726 #ifndef __bool_true_false_are_defined
 727 #define __bool_true_false_are_defined
 728 #endif
 729
 730 #ifndef true
 731 #define true (1)
 732 #endif
 733 #ifndef false
 734 #define false (0)
 735 #endif
 736
 737 #ifndef _TRUE
 738 #define _TRUE true
 739 #endif
 740 #ifndef _FALSE
 741 #define _FALSE false
 742 #endif
 743
 744 #ifndef HAVE_FUNCTION_MACRO
 745 #ifdef HAVE_func_MACRO
 746 #define __FUNCTION__ __func__
 747 #else
 748 #define __FUNCTION__ ("")
 749 #endif
 750 #endif
 751
 752
 753 #ifndef MIN
 754 #define MIN(a,b) ((a)<(b)?(a):(b))
 755 #endif
 756
 757 #ifndef MAX
 758 #define MAX(a,b) ((a)>(b)?(a):(b))
 759 #endif
 760
 761 #if !defined(HAVE_VOLATILE)
 762 #define volatile
 763 #endif
 764
 765 /**
 766   this is a warning hack. The idea is to use this everywhere that we
 767   get the "discarding const" warning from gcc. That doesn't actually
 768   fix the problem of course, but it means that when we do get to
 769   cleaning them up we can do it by searching the code for
 770   discard_const.
 771
 772   It also means that other error types aren't as swamped by the noise
 773   of hundreds of const warnings, so we are more likely to notice when
 774   we get new errors.
 775
 776   Please only add more uses of this macro when you find it
 777   _really_ hard to fix const warnings. Our aim is to eventually use
 778   this function in only a very few places.
 779
 780   Also, please call this via the discard_const_p() macro interface, as that
 781   makes the return type safe.
 782 */
 783 #define discard_const(ptr) ((void *)((uintptr_t)(ptr)))
 784
 785 /** Type-safe version of discard_const */
 786 #define discard_const_p(type, ptr) ((type *)discard_const(ptr))
 787
 788 #ifndef __STRING
 789 #define __STRING(x)    #x
 790 #endif
 791
 792 #ifndef __STRINGSTRING
 793 #define __STRINGSTRING(x) __STRING(x)
 794 #endif
 795
 796 #ifndef __LINESTR__
 797 #define __LINESTR__ __STRINGSTRING(__LINE__)
 798 #endif
 799
 800 #ifndef __location__
 801 #define __location__ __FILE__ ":" __LINESTR__
 802 #endif
 803
 804 /**
 805  * zero a structure
 806  */
 807 #define ZERO_STRUCT(x) memset((char *)&(x), 0, sizeof(x))
 808
 809 /**
 810  * zero a structure given a pointer to the structure
 811  */
 812 #define ZERO_STRUCTP(x) do { if ((x) != NULL) memset((char *)(x), 0, sizeof(*(x))); } while(0)
 813
 814 /**
 815  * zero a structure given a pointer to the structure - no zero check
 816  */
 817 #define ZERO_STRUCTPN(x) memset((char *)(x), 0, sizeof(*(x)))
 818
 819 /* zero an array - note that sizeof(array) must work - ie. it must not be a
 820    pointer */
 821 #define ZERO_ARRAY(x) memset((char *)(x), 0, sizeof(x))
 822
 823 /**
 824  * work out how many elements there are in a static array
 825  */
 826 #define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
 827
 828 /**
 829  * pointer difference macro
 830  */
 831 #define PTR_DIFF(p1,p2) ((ptrdiff_t)(((const char *)(p1)) - (const char *)(p2)))
 832
 833 #if MMAP_BLACKLIST
 834 #undef HAVE_MMAP
 835 #endif
 836
 837 #ifdef __COMPAR_FN_T
 838 #define QSORT_CAST (__compar_fn_t)
 839 #endif
 840
 841 #ifndef QSORT_CAST
 842 #define QSORT_CAST (int (*)(const void *, const void *))
 843 #endif
 844
 845 #ifndef PATH_MAX
 846 #define PATH_MAX 1024
 847 #endif
 848
 849 #ifndef MAX_DNS_NAME_LENGTH
 850 #define MAX_DNS_NAME_LENGTH 256 /* Actually 255 but +1 for terminating null. */
 851 #endif
 852
 853 #ifndef HAVE_CRYPT
 854 char *ufc_crypt(const char *key, const char *salt);
 855 #define crypt ufc_crypt
 856 #else
 857 #ifdef HAVE_CRYPT_H
 858 #include <crypt.h>
 859 #endif
 860 #endif
 861
 862 /* these macros gain us a few percent of speed on gcc */
 863 #if (__GNUC__ >= 3)
 864 /* the strange !! is to ensure that __builtin_expect() takes either 0 or 1
 865    as its first argument */
 866 #ifndef likely
 867 #define likely(x)   __builtin_expect(!!(x), 1)
 868 #endif
 869 #ifndef unlikely
 870 #define unlikely(x) __builtin_expect(!!(x), 0)
 871 #endif
 872 #else
 873 #ifndef likely
 874 #define likely(x) (x)
 875 #endif
 876 #ifndef unlikely
 877 #define unlikely(x) (x)
 878 #endif
 879 #endif
 880
 881 #ifndef HAVE_FDATASYNC
 882 #define fdatasync(fd) fsync(fd)
 883 #elif !defined(HAVE_DECL_FDATASYNC)
 884 int fdatasync(int );
 885 #endif
 886
 887 /* these are used to mark symbols as local to a shared lib, or
 888  * publicly available via the shared lib API */
 889 #ifndef _PUBLIC_
 890 #ifdef HAVE_VISIBILITY_ATTR
 891 #define _PUBLIC_ __attribute__((visibility("default")))
 892 #else
 893 #define _PUBLIC_
 894 #endif
 895 #endif
 896
 897 #ifndef _PRIVATE_
 898 #ifdef HAVE_VISIBILITY_ATTR
 899 #  define _PRIVATE_ __attribute__((visibility("hidden")))
 900 #else
 901 #  define _PRIVATE_
 902 #endif
 903 #endif
 904
 905 #ifndef HAVE_POLL
 906 #define poll rep_poll
 907 /* prototype is in "system/network.h" */
 908 #endif
 909
 910 #ifndef HAVE_GETPEEREID
 911 #define getpeereid rep_getpeereid
 912 int rep_getpeereid(int s, uid_t *uid, gid_t *gid);
 913 #endif
 914
 915 #ifndef HAVE_USLEEP
 916 #define usleep rep_usleep
 917 typedef long useconds_t;
 918 int usleep(useconds_t);
 919 #endif
 920
 921 #ifndef HAVE_SETPROCTITLE
 922 #define setproctitle rep_setproctitle
 923 void rep_setproctitle(const char *fmt, ...) PRINTF_ATTRIBUTE(1, 2);
 924 #endif
 925
 926 #ifndef HAVE_SETPROCTITLE_INIT
 927 #define setproctitle_init rep_setproctitle_init
 928 void rep_setproctitle_init(int argc, char *argv[], char *envp[]);
 929 #endif
 930
 931 #ifndef HAVE_MEMSET_S
 932 #define memset_s rep_memset_s
 933 int rep_memset_s(void *dest, size_t destsz, int ch, size_t count);
 934 #endif
 935
 936 #ifndef HAVE_GETPROGNAME
 937 #define getprogname rep_getprogname
 938 const char *rep_getprogname(void);
 939 #endif
 940
 941 #ifndef FALL_THROUGH
 942 # ifdef HAVE_FALLTHROUGH_ATTRIBUTE
 943 #  define FALL_THROUGH __attribute__ ((fallthrough))
 944 # else /* HAVE_FALLTHROUGH_ATTRIBUTE */
 945 #  define FALL_THROUGH ((void)0)
 946 # endif /* HAVE_FALLTHROUGH_ATTRIBUTE */
 947 #endif /* FALL_THROUGH */
 948
 949 bool nss_wrapper_enabled(void);
 950 bool nss_wrapper_hosts_enabled(void);
 951 bool socket_wrapper_enabled(void);
 952 bool uid_wrapper_enabled(void);
 953
 954 /* Needed for Solaris atomic_add_XX functions. */
 955 #if defined(HAVE_SYS_ATOMIC_H)
 956 #include <sys/atomic.h>
 957 #endif
 958
 959 #endif /* _LIBREPLACE_REPLACE_H */