include/vlc_fixups.h

   1 /*****************************************************************************
   2  * vlc_fixups.h: portability fixups included from config.h
   3  *****************************************************************************
   4  * Copyright © 1998-2008 the VideoLAN project
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU Lesser General Public License as published by
   8  * the Free Software Foundation; either version 2.1 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14  * GNU Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public License
  17  * along with this program; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  19  *****************************************************************************/
  20
  21 /**
  22  * \file
  23  * This file is a collection of portability fixes
  24  */
  25
  26 #ifndef LIBVLC_FIXUPS_H
  27 # define LIBVLC_FIXUPS_H 1
  28
  29 /* needed to detect uClibc */
  30 #ifdef HAVE_FEATURES_H
  31 #include <features.h>
  32 #endif
  33
  34 /* C++11 says there's no need to define __STDC_*_MACROS when including
  35  * inttypes.h and stdint.h. */
  36 #if defined (__cplusplus) && (defined(__MINGW32__) || defined(__UCLIBC__) || defined(__native_client__))
  37 # ifndef __STDC_FORMAT_MACROS
  38 #  define __STDC_FORMAT_MACROS 1
  39 # endif
  40 # ifndef __STDC_CONSTANT_MACROS
  41 #  define __STDC_CONSTANT_MACROS 1
  42 # endif
  43 # ifndef __STDC_LIMIT_MACROS
  44 #  define __STDC_LIMIT_MACROS 1
  45 # endif
  46 #endif
  47
  48 #ifndef __cplusplus
  49 # ifdef HAVE_THREADS_H
  50 #  include <threads.h>
  51 # elif !defined(thread_local)
  52 #  ifdef HAVE_THREAD_LOCAL
  53 #   define thread_local _Thread_local
  54 #  elif defined(_MSC_VER)
  55 #   define thread_local __declspec(thread)
  56 #  endif
  57 # endif
  58 #endif
  59
  60 #if !defined (HAVE_GMTIME_R) || !defined (HAVE_LOCALTIME_R) \
  61  || !defined (HAVE_TIMEGM)
  62 # include <time.h> /* time_t */
  63 #endif
  64
  65 #ifndef HAVE_GETTIMEOFDAY
  66 #ifdef _WIN32
  67 #include <winsock2.h>
  68 #else
  69 #include <sys/time.h>
  70 #endif
  71 #endif
  72
  73 #ifndef HAVE_LLDIV
  74 typedef struct
  75 {
  76     long long quot; /* Quotient. */
  77     long long rem;  /* Remainder. */
  78 } lldiv_t;
  79 #endif
  80
  81 #if !defined(HAVE_GETENV) || \
  82     !defined(HAVE_USELOCALE)
  83 # include <stddef.h> /* NULL */
  84 #endif
  85
  86 #if !defined (HAVE_REWIND) || \
  87     !defined (HAVE_GETDELIM)
  88 # include <stdio.h> /* FILE */
  89 #endif
  90
  91 #if !defined (HAVE_ALIGNED_ALLOC) || \
  92     !defined (HAVE_MEMRCHR) || \
  93     !defined (HAVE_POSIX_MEMALIGN) || \
  94     !defined (HAVE_QSORT_R) || \
  95     !defined (HAVE_STRLCPY) || \
  96     !defined (HAVE_STRNDUP) || \
  97     !defined (HAVE_STRNLEN) || \
  98     !defined (HAVE_STRNSTR)
  99 # include <stddef.h> /* size_t */
 100 #endif
 101
 102 #ifndef HAVE_VASPRINTF
 103 # include <stdarg.h> /* va_list */
 104 #endif
 105
 106 #if !defined (HAVE_GETDELIM) || \
 107     !defined (HAVE_GETPID)   || \
 108     !defined (HAVE_SWAB)
 109 # include <sys/types.h> /* ssize_t, pid_t */
 110 #endif
 111
 112 #if !defined (HAVE_DIRFD) || \
 113     !defined (HAVE_FDOPENDIR)
 114 # include <dirent.h>
 115 #endif
 116
 117 #ifdef __cplusplus
 118 # define VLC_NOTHROW throw ()
 119 extern "C" {
 120 #else
 121 # define VLC_NOTHROW
 122 #endif
 123
 124 /* signal.h */
 125 #if !defined(HAVE_SIGWAIT) && defined(__native_client__)
 126 /* NaCl does not define sigwait in signal.h. We need to include it here to
 127  * define sigwait, because sigset_t is allowed to be either an integral or a
 128  * struct. */
 129 #include <signal.h>
 130 int sigwait(const sigset_t *set, int *sig);
 131 #endif
 132
 133 /* stddef.h */
 134 #if !defined (__cplusplus) && !defined (HAVE_MAX_ALIGN_T)
 135 typedef struct {
 136   long long ll;
 137   long double ld;
 138 } max_align_t;
 139 #endif
 140
 141 /* stdio.h */
 142 #ifndef HAVE_ASPRINTF
 143 int asprintf (char **, const char *, ...);
 144 #endif
 145
 146 #ifndef HAVE_FLOCKFILE
 147 void flockfile (FILE *);
 148 void funlockfile (FILE *);
 149 int getc_unlocked (FILE *);
 150 int getchar_unlocked (void);
 151 int putc_unlocked (int, FILE *);
 152 int putchar_unlocked (int);
 153 #endif
 154
 155 #ifndef HAVE_GETDELIM
 156 ssize_t getdelim (char **, size_t *, int, FILE *);
 157 ssize_t getline (char **, size_t *, FILE *);
 158 #endif
 159
 160 #ifndef HAVE_REWIND
 161 void rewind (FILE *);
 162 #endif
 163
 164 #ifndef HAVE_VASPRINTF
 165 int vasprintf (char **, const char *, va_list);
 166 #endif
 167
 168 /* string.h */
 169 #ifndef HAVE_MEMRCHR
 170 void *memrchr(const void *, int, size_t);
 171 #endif
 172
 173 #ifndef HAVE_STRCASECMP
 174 int strcasecmp (const char *, const char *);
 175 #endif
 176
 177 #ifndef HAVE_STRCASESTR
 178 char *strcasestr (const char *, const char *);
 179 #endif
 180
 181 #ifndef HAVE_STRDUP
 182 char *strdup (const char *);
 183 #endif
 184
 185 #ifndef HAVE_STRVERSCMP
 186 int strverscmp (const char *, const char *);
 187 #endif
 188
 189 #ifndef HAVE_STRNLEN
 190 size_t strnlen (const char *, size_t);
 191 #endif
 192
 193 #ifndef HAVE_STRNSTR
 194 char * strnstr (const char *, const char *, size_t);
 195 #endif
 196
 197 #ifndef HAVE_STRNDUP
 198 char *strndup (const char *, size_t);
 199 #endif
 200
 201 #ifndef HAVE_STRLCPY
 202 size_t strlcpy (char *, const char *, size_t);
 203 #endif
 204
 205 #ifndef HAVE_STRSEP
 206 char *strsep (char **, const char *);
 207 #endif
 208
 209 #ifndef HAVE_STRTOK_R
 210 char *strtok_r(char *, const char *, char **);
 211 #endif
 212
 213 /* stdlib.h */
 214 #ifndef HAVE_ATOF
 215 #ifndef __ANDROID__
 216 double atof (const char *);
 217 #endif
 218 #endif
 219
 220 #ifndef HAVE_ATOLL
 221 long long atoll (const char *);
 222 #endif
 223
 224 #ifndef HAVE_LLDIV
 225 lldiv_t lldiv (long long, long long);
 226 #endif
 227
 228 #ifndef HAVE_STRTOF
 229 #ifndef __ANDROID__
 230 float strtof (const char *, char **);
 231 #endif
 232 #endif
 233
 234 #ifndef HAVE_STRTOLL
 235 long long int strtoll (const char *, char **, int);
 236 #endif
 237
 238 /* time.h */
 239 #ifndef HAVE_GMTIME_R
 240 struct tm *gmtime_r (const time_t *, struct tm *);
 241 #endif
 242
 243 #ifndef HAVE_LOCALTIME_R
 244 struct tm *localtime_r (const time_t *, struct tm *);
 245 #endif
 246
 247 #ifndef HAVE_TIMEGM
 248 time_t timegm(struct tm *);
 249 #endif
 250
 251 #ifndef HAVE_TIMESPEC_GET
 252 #define TIME_UTC 1
 253 struct timespec;
 254 int timespec_get(struct timespec *, int);
 255 #endif
 256
 257 /* sys/time.h */
 258 #ifndef HAVE_GETTIMEOFDAY
 259 struct timezone;
 260 int gettimeofday(struct timeval *, struct timezone *);
 261 #endif
 262
 263 /* unistd.h */
 264 #ifndef HAVE_GETPID
 265 pid_t getpid (void) VLC_NOTHROW;
 266 #endif
 267
 268 #ifndef HAVE_FSYNC
 269 int fsync (int fd);
 270 #endif
 271
 272 #ifndef HAVE_PATHCONF
 273 long pathconf (const char *path, int name);
 274 #endif
 275
 276 /* dirent.h */
 277 #ifndef HAVE_DIRFD
 278 int (dirfd) (DIR *);
 279 #endif
 280
 281 #ifndef HAVE_FDOPENDIR
 282 DIR *fdopendir (int);
 283 #endif
 284
 285 #ifdef __cplusplus
 286 } /* extern "C" */
 287 #endif
 288
 289 /* stdlib.h */
 290 #ifndef HAVE_GETENV
 291 static inline char *getenv (const char *name)
 292 {
 293     (void)name;
 294     return NULL;
 295 }
 296 #endif
 297
 298 #ifdef __cplusplus
 299 extern "C" {
 300 #endif
 301
 302 #ifndef HAVE_SETENV
 303 int setenv (const char *, const char *, int);
 304 int unsetenv (const char *);
 305 #endif
 306
 307 #ifndef HAVE_POSIX_MEMALIGN
 308 int posix_memalign(void **, size_t, size_t);
 309 #endif
 310
 311 #ifndef HAVE_ALIGNED_ALLOC
 312 void *aligned_alloc(size_t, size_t);
 313 #endif
 314
 315 #ifdef __cplusplus
 316 } /* extern "C" */
 317 #endif
 318
 319 #if defined (_WIN32) && defined(__MINGW32__)
 320 #define aligned_free(ptr)  __mingw_aligned_free(ptr)
 321 #elif defined (_WIN32) && defined(_MSC_VER)
 322 #define aligned_free(ptr)  _aligned_free(ptr)
 323 #else
 324 #define aligned_free(ptr)  free(ptr)
 325 #endif
 326
 327 #if defined(__native_client__) && defined(__cplusplus)
 328 # define HAVE_USELOCALE
 329 #endif
 330
 331 #if !defined(HAVE_NEWLOCALE) && defined(HAVE_CXX_LOCALE_T) && defined(__cplusplus)
 332 # include <locale>
 333 # define HAVE_NEWLOCALE
 334 #endif
 335
 336 /* locale.h */
 337 #ifndef HAVE_USELOCALE
 338 # ifndef HAVE_NEWLOCALE
 339 #  define LC_ALL_MASK      0
 340 #  define LC_NUMERIC_MASK  0
 341 #  define LC_MESSAGES_MASK 0
 342 #  define LC_GLOBAL_LOCALE ((locale_t)(uintptr_t)1)
 343 typedef void *locale_t;
 344
 345 static inline void freelocale(locale_t loc)
 346 {
 347     (void)loc;
 348 }
 349 static inline locale_t newlocale(int mask, const char * locale, locale_t base)
 350 {
 351     (void)mask; (void)locale; (void)base;
 352     return NULL;
 353 }
 354 # else
 355 #  include <locale.h>
 356 # endif
 357
 358 static inline locale_t uselocale(locale_t loc)
 359 {
 360     (void)loc;
 361     return NULL;
 362 }
 363 #endif
 364
 365 #if !defined (HAVE_STATIC_ASSERT) && !defined(__cpp_static_assert)
 366 # define STATIC_ASSERT_CONCAT_(a, b) a##b
 367 # define STATIC_ASSERT_CONCAT(a, b) STATIC_ASSERT_CONCAT_(a, b)
 368 # define _Static_assert(x, s) extern char STATIC_ASSERT_CONCAT(static_assert_, __LINE__)[sizeof(struct { unsigned:-!(x); })]
 369 # define static_assert _Static_assert
 370 #endif
 371
 372 /* libintl support */
 373 #define _(str)            vlc_gettext (str)
 374 #define N_(str)           gettext_noop (str)
 375 #define gettext_noop(str) (str)
 376
 377 #ifdef __cplusplus
 378 extern "C" {
 379 #endif
 380
 381 #ifndef HAVE_SWAB
 382 void swab (const void *, void *, ssize_t);
 383 #endif
 384
 385 /* Socket stuff */
 386 #ifndef HAVE_INET_PTON
 387 # ifndef _WIN32
 388 #  include <sys/socket.h>
 389 #else
 390 typedef int socklen_t;
 391 # endif
 392 int inet_pton(int, const char *, void *);
 393 const char *inet_ntop(int, const void *, char *, socklen_t);
 394 #endif
 395
 396 /* NaCl has a broken netinet/tcp.h, so TCP_NODELAY is not set */
 397 #if defined(__native_client__) && !defined( HAVE_NETINET_TCP_H )
 398 #  define TCP_NODELAY 1
 399 #endif
 400
 401 #ifndef HAVE_STRUCT_POLLFD
 402 enum
 403 {
 404     POLLERR=0x1,
 405     POLLHUP=0x2,
 406     POLLNVAL=0x4,
 407     POLLWRNORM=0x10,
 408     POLLWRBAND=0x20,
 409     POLLRDNORM=0x100,
 410     POLLRDBAND=0x200,
 411     POLLPRI=0x400,
 412 };
 413 #define POLLIN  (POLLRDNORM|POLLRDBAND)
 414 #define POLLOUT (POLLWRNORM|POLLWRBAND)
 415
 416 struct pollfd
 417 {
 418     int fd;
 419     short events;
 420     short revents;
 421 };
 422 #endif
 423 #ifndef HAVE_POLL
 424 struct pollfd;
 425 int poll (struct pollfd *, unsigned, int);
 426 #endif
 427
 428 #ifndef HAVE_IF_NAMEINDEX
 429 #include <errno.h>
 430 # ifndef HAVE_STRUCT_IF_NAMEINDEX
 431 struct if_nameindex
 432 {
 433     unsigned if_index;
 434     char    *if_name;
 435 };
 436 # endif
 437 # define if_nameindex()         (errno = ENOBUFS, NULL)
 438 # define if_freenameindex(list) (void)0
 439 #endif
 440
 441 #ifndef HAVE_STRUCT_TIMESPEC
 442 struct timespec {
 443     time_t  tv_sec;   /* Seconds */
 444     long    tv_nsec;  /* Nanoseconds */
 445 };
 446 #endif
 447
 448 #ifdef _WIN32
 449 struct iovec
 450 {
 451     void  *iov_base;
 452     size_t iov_len;
 453 };
 454 #define IOV_MAX 255
 455 struct msghdr
 456 {
 457     void         *msg_name;
 458     size_t        msg_namelen;
 459     struct iovec *msg_iov;
 460     size_t        msg_iovlen;
 461     void         *msg_control;
 462     size_t        msg_controllen;
 463     int           msg_flags;
 464 };
 465
 466 # ifndef HAVE_IF_NAMETOINDEX
 467 #  include <stdlib.h> /* a define may change from the real atoi declaration */
 468 static inline int if_nametoindex(const char *name)
 469 {
 470     return atoi(name);
 471 }
 472 # endif
 473 #endif
 474
 475 #ifdef _NEWLIB_VERSION
 476 #define IOV_MAX 255
 477 #endif
 478
 479 #ifndef HAVE_RECVMSG
 480 struct msghdr;
 481 ssize_t recvmsg(int, struct msghdr *, int);
 482 #endif
 483
 484 #ifndef HAVE_SENDMSG
 485 struct msghdr;
 486 ssize_t sendmsg(int, const struct msghdr *, int);
 487 #endif
 488
 489 /* search.h */
 490 #ifndef HAVE_SEARCH_H
 491 typedef struct entry {
 492     char *key;
 493     void *data;
 494 } ENTRY;
 495
 496 typedef enum {
 497     FIND, ENTER
 498 } ACTION;
 499
 500 typedef enum {
 501     preorder,
 502     postorder,
 503     endorder,
 504     leaf
 505 } VISIT;
 506
 507 void *tsearch( const void *key, void **rootp, int(*cmp)(const void *, const void *) );
 508 void *tfind( const void *key, void * const *rootp, int(*cmp)(const void *, const void *) );
 509 void *tdelete( const void *key, void **rootp, int(*cmp)(const void *, const void *) );
 510 void twalk( const void *root, void(*action)(const void *nodep, VISIT which, int depth) );
 511 void *lfind( const void *key, const void *base, size_t *nmemb,
 512              size_t size, int(*cmp)(const void *, const void *) );
 513 #endif /* HAVE_SEARCH_H */
 514
 515 #ifdef _WIN64
 516 # ifdef HAVE_SEARCH_H
 517 #  include <search.h>
 518 # endif
 519 /* the Win32 prototype of lfind() expects an unsigned* for 'nelp' */
 520 # define lfind(a,b,c,d,e) \
 521          lfind((a),(b), &(unsigned){ (*(c) > UINT_MAX) ? UINT_MAX : *(c) }, (d),(e))
 522 #endif /* _WIN64 */
 523
 524 #ifndef HAVE_TDESTROY
 525 void tdestroy( void *root, void (*free_node)(void *nodep) );
 526 #endif
 527
 528 /* Random numbers */
 529 #ifndef HAVE_NRAND48
 530 double erand48 (unsigned short subi[3]);
 531 long jrand48 (unsigned short subi[3]);
 532 long nrand48 (unsigned short subi[3]);
 533 #endif
 534
 535 #ifdef __OS2__
 536 # undef HAVE_FORK   /* Implementation of fork() is imperfect on OS/2 */
 537
 538 # define SHUT_RD    0
 539 # define SHUT_WR    1
 540 # define SHUT_RDWR  2
 541
 542 /* GAI error codes */
 543 # ifndef EAI_BADFLAGS
 544 #  define EAI_BADFLAGS -1
 545 # endif
 546 # ifndef EAI_NONAME
 547 #  define EAI_NONAME -2
 548 # endif
 549 # ifndef EAI_AGAIN
 550 #  define EAI_AGAIN -3
 551 # endif
 552 # ifndef EAI_FAIL
 553 #  define EAI_FAIL -4
 554 # endif
 555 # ifndef EAI_NODATA
 556 #  define EAI_NODATA -5
 557 # endif
 558 # ifndef EAI_FAMILY
 559 #  define EAI_FAMILY -6
 560 # endif
 561 # ifndef EAI_SOCKTYPE
 562 #  define EAI_SOCKTYPE -7
 563 # endif
 564 # ifndef EAI_SERVICE
 565 #  define EAI_SERVICE -8
 566 # endif
 567 # ifndef EAI_ADDRFAMILY
 568 #  define EAI_ADDRFAMILY -9
 569 # endif
 570 # ifndef EAI_MEMORY
 571 #  define EAI_MEMORY -10
 572 # endif
 573 # ifndef EAI_OVERFLOW
 574 #  define EAI_OVERFLOW -11
 575 # endif
 576 # ifndef EAI_SYSTEM
 577 #  define EAI_SYSTEM -12
 578 # endif
 579
 580 # ifndef NI_NUMERICHOST
 581 #  define NI_NUMERICHOST 0x01
 582 #  define NI_NUMERICSERV 0x02
 583 #  define NI_NOFQDN      0x04
 584 #  define NI_NAMEREQD    0x08
 585 #  define NI_DGRAM       0x10
 586 # endif
 587
 588 # ifndef NI_MAXHOST
 589 #  define NI_MAXHOST 1025
 590 #  define NI_MAXSERV 32
 591 # endif
 592
 593 # define AI_PASSIVE     1
 594 # define AI_CANONNAME   2
 595 # define AI_NUMERICHOST 4
 596
 597 struct addrinfo
 598 {
 599     int ai_flags;
 600     int ai_family;
 601     int ai_socktype;
 602     int ai_protocol;
 603     size_t ai_addrlen;
 604     struct sockaddr *ai_addr;
 605     char *ai_canonname;
 606     struct addrinfo *ai_next;
 607 };
 608
 609 const char *gai_strerror (int);
 610
 611 int  getaddrinfo  (const char *node, const char *service,
 612                    const struct addrinfo *hints, struct addrinfo **res);
 613 void freeaddrinfo (struct addrinfo *res);
 614 int  getnameinfo  (const struct sockaddr *sa, socklen_t salen,
 615                    char *host, int hostlen, char *serv, int servlen,
 616                    int flags);
 617
 618 /* OS/2 does not support IPv6, yet. But declare these only for compilation */
 619 # include <stdint.h>
 620
 621 struct in6_addr
 622 {
 623     uint8_t s6_addr[16];
 624 };
 625
 626 struct sockaddr_in6
 627 {
 628     uint8_t         sin6_len;
 629     uint8_t         sin6_family;
 630     uint16_t        sin6_port;
 631     uint32_t        sin6_flowinfo;
 632     struct in6_addr sin6_addr;
 633     uint32_t        sin6_scope_id;
 634 };
 635
 636 # define IN6_IS_ADDR_MULTICAST(a)   (((__const uint8_t *) (a))[0] == 0xff)
 637
 638 static const struct in6_addr in6addr_any =
 639     { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } };
 640
 641 # include <errno.h>
 642 # ifndef EPROTO
 643 #  define EPROTO (ELAST + 1)
 644 # endif
 645
 646 # ifndef HAVE_IF_NAMETOINDEX
 647 #  define if_nametoindex(name)  atoi(name)
 648 # endif
 649 #endif
 650
 651 /* math.h */
 652
 653 #ifndef HAVE_NANF
 654 #define nanf(tagp) NAN
 655 #endif
 656
 657 #ifndef HAVE_SINCOS
 658 void sincos(double, double *, double *);
 659 void sincosf(float, float *, float *);
 660 #endif
 661
 662 #ifndef HAVE_REALPATH
 663 char *realpath(const char * restrict pathname, char * restrict resolved_path);
 664 #endif
 665
 666 /* mingw-w64 has a broken IN6_IS_ADDR_MULTICAST macro */
 667 #if defined(_WIN32) && defined(__MINGW64_VERSION_MAJOR)
 668 # define IN6_IS_ADDR_MULTICAST IN6_IS_ADDR_MULTICAST
 669 #endif
 670
 671 #ifdef __APPLE__
 672 # define fdatasync fsync
 673
 674 # include <time.h>
 675 # ifndef TIMER_ABSTIME
 676 #  define TIMER_ABSTIME 0x01
 677 # endif
 678 # ifndef CLOCK_REALTIME
 679 #  define CLOCK_REALTIME 0
 680 # endif
 681 # ifndef CLOCK_MONOTONIC
 682 #  define CLOCK_MONOTONIC 6
 683 # endif
 684 # ifndef HAVE_CLOCK_GETTIME
 685 int clock_gettime(clockid_t clock_id, struct timespec *tp);
 686 # endif
 687 # ifndef HAVE_CLOCK_GETRES
 688 int clock_getres(clockid_t clock_id, struct timespec *tp);
 689 # endif
 690 # ifndef HAVE_CLOCK_NANOSLEEP
 691 int clock_nanosleep(clockid_t clock_id, int flags,
 692         const struct timespec *rqtp, struct timespec *rmtp);
 693 # endif
 694 #endif
 695
 696 #ifdef __cplusplus
 697 } /* extern "C" */
 698 #endif
 699
 700 #endif /* !LIBVLC_FIXUPS_H */