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_STRLCPY) || \
  94     !defined (HAVE_STRNDUP) || \
  95     !defined (HAVE_STRNLEN) || \
  96     !defined (HAVE_STRNSTR)
  97 # include <stddef.h> /* size_t */
  98 #endif
  99
 100 #ifndef HAVE_VASPRINTF
 101 # include <stdarg.h> /* va_list */
 102 #endif
 103
 104 #if !defined (HAVE_GETDELIM) || \
 105     !defined (HAVE_GETPID)   || \
 106     !defined (HAVE_SWAB)
 107 # include <sys/types.h> /* ssize_t, pid_t */
 108 #endif
 109
 110 #if !defined (HAVE_DIRFD) || \
 111     !defined (HAVE_FDOPENDIR)
 112 # include <dirent.h>
 113 #endif
 114
 115 #ifdef __cplusplus
 116 # define VLC_NOTHROW throw ()
 117 extern "C" {
 118 #else
 119 # define VLC_NOTHROW
 120 #endif
 121
 122 /* signal.h */
 123 #if !defined(HAVE_SIGWAIT) && defined(__native_client__)
 124 /* NaCl does not define sigwait in signal.h. We need to include it here to
 125  * define sigwait, because sigset_t is allowed to be either an integral or a
 126  * struct. */
 127 #include <signal.h>
 128 int sigwait(const sigset_t *set, int *sig);
 129 #endif
 130
 131 /* stddef.h */
 132 #if !defined (__cplusplus) && !defined (HAVE_MAX_ALIGN_T)
 133 typedef struct {
 134   long long ll;
 135   long double ld;
 136 } max_align_t;
 137 #endif
 138
 139 /* stdio.h */
 140 #ifndef HAVE_ASPRINTF
 141 int asprintf (char **, const char *, ...);
 142 #endif
 143
 144 #ifndef HAVE_FLOCKFILE
 145 void flockfile (FILE *);
 146 void funlockfile (FILE *);
 147 int getc_unlocked (FILE *);
 148 int getchar_unlocked (void);
 149 int putc_unlocked (int, FILE *);
 150 int putchar_unlocked (int);
 151 #endif
 152
 153 #ifndef HAVE_GETDELIM
 154 ssize_t getdelim (char **, size_t *, int, FILE *);
 155 ssize_t getline (char **, size_t *, FILE *);
 156 #endif
 157
 158 #ifndef HAVE_REWIND
 159 void rewind (FILE *);
 160 #endif
 161
 162 #ifndef HAVE_VASPRINTF
 163 int vasprintf (char **, const char *, va_list);
 164 #endif
 165
 166 /* string.h */
 167 #ifndef HAVE_FFSLL
 168 int ffsll(long long);
 169 #endif
 170
 171 #ifndef HAVE_MEMRCHR
 172 void *memrchr(const void *, int, size_t);
 173 #endif
 174
 175 #ifndef HAVE_STRCASECMP
 176 int strcasecmp (const char *, const char *);
 177 #endif
 178
 179 #ifndef HAVE_STRCASESTR
 180 char *strcasestr (const char *, const char *);
 181 #endif
 182
 183 #ifndef HAVE_STRDUP
 184 char *strdup (const char *);
 185 #endif
 186
 187 #ifndef HAVE_STRVERSCMP
 188 int strverscmp (const char *, const char *);
 189 #endif
 190
 191 #ifndef HAVE_STRNLEN
 192 size_t strnlen (const char *, size_t);
 193 #endif
 194
 195 #ifndef HAVE_STRNSTR
 196 char * strnstr (const char *, const char *, size_t);
 197 #endif
 198
 199 #ifndef HAVE_STRNDUP
 200 char *strndup (const char *, size_t);
 201 #endif
 202
 203 #ifndef HAVE_STRLCPY
 204 size_t strlcpy (char *, const char *, size_t);
 205 #endif
 206
 207 #ifndef HAVE_STRSEP
 208 char *strsep (char **, const char *);
 209 #endif
 210
 211 #ifndef HAVE_STRTOK_R
 212 char *strtok_r(char *, const char *, char **);
 213 #endif
 214
 215 /* stdlib.h */
 216 #ifndef HAVE_ATOF
 217 #ifndef __ANDROID__
 218 double atof (const char *);
 219 #endif
 220 #endif
 221
 222 #ifndef HAVE_ATOLL
 223 long long atoll (const char *);
 224 #endif
 225
 226 #ifndef HAVE_LLDIV
 227 lldiv_t lldiv (long long, long long);
 228 #endif
 229
 230 #ifndef HAVE_STRTOF
 231 #ifndef __ANDROID__
 232 float strtof (const char *, char **);
 233 #endif
 234 #endif
 235
 236 #ifndef HAVE_STRTOLL
 237 long long int strtoll (const char *, char **, int);
 238 #endif
 239
 240 /* time.h */
 241 #ifndef HAVE_GMTIME_R
 242 struct tm *gmtime_r (const time_t *, struct tm *);
 243 #endif
 244
 245 #ifndef HAVE_LOCALTIME_R
 246 struct tm *localtime_r (const time_t *, struct tm *);
 247 #endif
 248
 249 #ifndef HAVE_TIMEGM
 250 time_t timegm(struct tm *);
 251 #endif
 252
 253 #ifndef HAVE_TIMESPEC_GET
 254 #define TIME_UTC 1
 255 struct timespec;
 256 int timespec_get(struct timespec *, int);
 257 #endif
 258
 259 /* sys/time.h */
 260 #ifndef HAVE_GETTIMEOFDAY
 261 struct timezone;
 262 int gettimeofday(struct timeval *, struct timezone *);
 263 #endif
 264
 265 /* unistd.h */
 266 #ifndef HAVE_GETPID
 267 pid_t getpid (void) VLC_NOTHROW;
 268 #endif
 269
 270 #ifndef HAVE_FSYNC
 271 int fsync (int fd);
 272 #endif
 273
 274 #ifndef HAVE_PATHCONF
 275 long pathconf (const char *path, int name);
 276 #endif
 277
 278 /* dirent.h */
 279 #ifndef HAVE_DIRFD
 280 int (dirfd) (DIR *);
 281 #endif
 282
 283 #ifndef HAVE_FDOPENDIR
 284 DIR *fdopendir (int);
 285 #endif
 286
 287 #ifdef __cplusplus
 288 } /* extern "C" */
 289 #endif
 290
 291 /* stdlib.h */
 292 #ifndef HAVE_GETENV
 293 static inline char *getenv (const char *name)
 294 {
 295     (void)name;
 296     return NULL;
 297 }
 298 #endif
 299
 300 #ifndef HAVE_SETENV
 301 int setenv (const char *, const char *, int);
 302 int unsetenv (const char *);
 303 #endif
 304
 305 #ifndef HAVE_ALIGNED_ALLOC
 306 void *aligned_alloc(size_t, size_t);
 307 #endif
 308
 309 #if defined (_WIN32) && defined(__MINGW32__)
 310 #define aligned_free(ptr)  __mingw_aligned_free(ptr)
 311 #elif defined (_WIN32) && defined(_MSC_VER)
 312 #define aligned_free(ptr)  _aligned_free(ptr)
 313 #else
 314 #define aligned_free(ptr)  free(ptr)
 315 #endif
 316
 317 #if defined(__native_client__) && defined(__cplusplus)
 318 # define HAVE_USELOCALE
 319 #endif
 320
 321 /* locale.h */
 322 #ifndef HAVE_USELOCALE
 323 #define LC_ALL_MASK      0
 324 #define LC_NUMERIC_MASK  0
 325 #define LC_MESSAGES_MASK 0
 326 #define LC_GLOBAL_LOCALE ((locale_t)(uintptr_t)1)
 327 typedef void *locale_t;
 328 static inline locale_t uselocale(locale_t loc)
 329 {
 330     (void)loc;
 331     return NULL;
 332 }
 333 static inline void freelocale(locale_t loc)
 334 {
 335     (void)loc;
 336 }
 337 static inline locale_t newlocale(int mask, const char * locale, locale_t base)
 338 {
 339     (void)mask; (void)locale; (void)base;
 340     return NULL;
 341 }
 342 #endif
 343
 344 #if !defined (HAVE_STATIC_ASSERT) && !defined(__cpp_static_assert)
 345 # define STATIC_ASSERT_CONCAT_(a, b) a##b
 346 # define STATIC_ASSERT_CONCAT(a, b) STATIC_ASSERT_CONCAT_(a, b)
 347 # define _Static_assert(x, s) extern char STATIC_ASSERT_CONCAT(static_assert_, __LINE__)[sizeof(struct { unsigned:-!(x); })]
 348 # define static_assert _Static_assert
 349 #endif
 350
 351 /* libintl support */
 352 #define _(str)            vlc_gettext (str)
 353 #define N_(str)           gettext_noop (str)
 354 #define gettext_noop(str) (str)
 355
 356 #ifdef __cplusplus
 357 extern "C" {
 358 #endif
 359
 360 #ifndef HAVE_SWAB
 361 void swab (const void *, void *, ssize_t);
 362 #endif
 363
 364 /* Socket stuff */
 365 #ifndef HAVE_INET_PTON
 366 # ifndef _WIN32
 367 #  include <sys/socket.h>
 368 #else
 369 typedef int socklen_t;
 370 # endif
 371 int inet_pton(int, const char *, void *);
 372 const char *inet_ntop(int, const void *, char *, socklen_t);
 373 #endif
 374
 375 /* NaCl has a broken netinet/tcp.h, so TCP_NODELAY is not set */
 376 #if defined(__native_client__) && !defined( HAVE_NETINET_TCP_H )
 377 #  define TCP_NODELAY 1
 378 #endif
 379
 380 #ifndef HAVE_STRUCT_POLLFD
 381 enum
 382 {
 383     POLLERR=0x1,
 384     POLLHUP=0x2,
 385     POLLNVAL=0x4,
 386     POLLWRNORM=0x10,
 387     POLLWRBAND=0x20,
 388     POLLRDNORM=0x100,
 389     POLLRDBAND=0x200,
 390     POLLPRI=0x400,
 391 };
 392 #define POLLIN  (POLLRDNORM|POLLRDBAND)
 393 #define POLLOUT (POLLWRNORM|POLLWRBAND)
 394
 395 struct pollfd
 396 {
 397     int fd;
 398     unsigned events;
 399     unsigned revents;
 400 };
 401 #endif
 402 #ifndef HAVE_POLL
 403 struct pollfd;
 404 int poll (struct pollfd *, unsigned, int);
 405 #endif
 406
 407 #ifndef HAVE_IF_NAMEINDEX
 408 #include <errno.h>
 409 struct if_nameindex
 410 {
 411     unsigned if_index;
 412     char    *if_name;
 413 };
 414 # define if_nameindex()         (errno = ENOBUFS, NULL)
 415 # define if_freenameindex(list) (void)0
 416 #endif
 417
 418 #ifndef HAVE_STRUCT_TIMESPEC
 419 struct timespec {
 420     time_t  tv_sec;   /* Seconds */
 421     long    tv_nsec;  /* Nanoseconds */
 422 };
 423 #endif
 424
 425 #ifdef _WIN32
 426 struct iovec
 427 {
 428     void  *iov_base;
 429     size_t iov_len;
 430 };
 431 #define IOV_MAX 255
 432 struct msghdr
 433 {
 434     void         *msg_name;
 435     size_t        msg_namelen;
 436     struct iovec *msg_iov;
 437     size_t        msg_iovlen;
 438     void         *msg_control;
 439     size_t        msg_controllen;
 440     int           msg_flags;
 441 };
 442 #endif
 443
 444 #ifdef _NEWLIB_VERSION
 445 #define IOV_MAX 255
 446 #endif
 447
 448 #ifndef HAVE_RECVMSG
 449 struct msghdr;
 450 ssize_t recvmsg(int, struct msghdr *, int);
 451 #endif
 452
 453 #ifndef HAVE_SENDMSG
 454 struct msghdr;
 455 ssize_t sendmsg(int, const struct msghdr *, int);
 456 #endif
 457
 458 /* search.h */
 459 #ifndef HAVE_SEARCH_H
 460 typedef struct entry {
 461     char *key;
 462     void *data;
 463 } ENTRY;
 464
 465 typedef enum {
 466     FIND, ENTER
 467 } ACTION;
 468
 469 typedef enum {
 470     preorder,
 471     postorder,
 472     endorder,
 473     leaf
 474 } VISIT;
 475
 476 void *tsearch( const void *key, void **rootp, int(*cmp)(const void *, const void *) );
 477 void *tfind( const void *key, const void **rootp, int(*cmp)(const void *, const void *) );
 478 void *tdelete( const void *key, void **rootp, int(*cmp)(const void *, const void *) );
 479 void twalk( const void *root, void(*action)(const void *nodep, VISIT which, int depth) );
 480 void tdestroy( void *root, void (*free_node)(void *nodep) );
 481 #else // HAVE_SEARCH_H
 482 # ifndef HAVE_TDESTROY
 483 void vlc_tdestroy( void *, void (*)(void *) );
 484 #  define tdestroy vlc_tdestroy
 485 # endif
 486 #endif
 487
 488 /* Random numbers */
 489 #ifndef HAVE_NRAND48
 490 double erand48 (unsigned short subi[3]);
 491 long jrand48 (unsigned short subi[3]);
 492 long nrand48 (unsigned short subi[3]);
 493 #endif
 494
 495 #ifdef __OS2__
 496 # undef HAVE_FORK   /* Implementation of fork() is imperfect on OS/2 */
 497
 498 # define SHUT_RD    0
 499 # define SHUT_WR    1
 500 # define SHUT_RDWR  2
 501
 502 /* GAI error codes */
 503 # ifndef EAI_BADFLAGS
 504 #  define EAI_BADFLAGS -1
 505 # endif
 506 # ifndef EAI_NONAME
 507 #  define EAI_NONAME -2
 508 # endif
 509 # ifndef EAI_AGAIN
 510 #  define EAI_AGAIN -3
 511 # endif
 512 # ifndef EAI_FAIL
 513 #  define EAI_FAIL -4
 514 # endif
 515 # ifndef EAI_NODATA
 516 #  define EAI_NODATA -5
 517 # endif
 518 # ifndef EAI_FAMILY
 519 #  define EAI_FAMILY -6
 520 # endif
 521 # ifndef EAI_SOCKTYPE
 522 #  define EAI_SOCKTYPE -7
 523 # endif
 524 # ifndef EAI_SERVICE
 525 #  define EAI_SERVICE -8
 526 # endif
 527 # ifndef EAI_ADDRFAMILY
 528 #  define EAI_ADDRFAMILY -9
 529 # endif
 530 # ifndef EAI_MEMORY
 531 #  define EAI_MEMORY -10
 532 # endif
 533 # ifndef EAI_OVERFLOW
 534 #  define EAI_OVERFLOW -11
 535 # endif
 536 # ifndef EAI_SYSTEM
 537 #  define EAI_SYSTEM -12
 538 # endif
 539
 540 # ifndef NI_NUMERICHOST
 541 #  define NI_NUMERICHOST 0x01
 542 #  define NI_NUMERICSERV 0x02
 543 #  define NI_NOFQDN      0x04
 544 #  define NI_NAMEREQD    0x08
 545 #  define NI_DGRAM       0x10
 546 # endif
 547
 548 # ifndef NI_MAXHOST
 549 #  define NI_MAXHOST 1025
 550 #  define NI_MAXSERV 32
 551 # endif
 552
 553 # define AI_PASSIVE     1
 554 # define AI_CANONNAME   2
 555 # define AI_NUMERICHOST 4
 556
 557 struct addrinfo
 558 {
 559     int ai_flags;
 560     int ai_family;
 561     int ai_socktype;
 562     int ai_protocol;
 563     size_t ai_addrlen;
 564     struct sockaddr *ai_addr;
 565     char *ai_canonname;
 566     struct addrinfo *ai_next;
 567 };
 568
 569 const char *gai_strerror (int);
 570
 571 int  getaddrinfo  (const char *node, const char *service,
 572                    const struct addrinfo *hints, struct addrinfo **res);
 573 void freeaddrinfo (struct addrinfo *res);
 574 int  getnameinfo  (const struct sockaddr *sa, socklen_t salen,
 575                    char *host, int hostlen, char *serv, int servlen,
 576                    int flags);
 577
 578 /* OS/2 does not support IPv6, yet. But declare these only for compilation */
 579 # include <stdint.h>
 580
 581 struct in6_addr
 582 {
 583     uint8_t s6_addr[16];
 584 };
 585
 586 struct sockaddr_in6
 587 {
 588     uint8_t         sin6_len;
 589     uint8_t         sin6_family;
 590     uint16_t        sin6_port;
 591     uint32_t        sin6_flowinfo;
 592     struct in6_addr sin6_addr;
 593     uint32_t        sin6_scope_id;
 594 };
 595
 596 # define IN6_IS_ADDR_MULTICAST(a)   (((__const uint8_t *) (a))[0] == 0xff)
 597
 598 static const struct in6_addr in6addr_any =
 599     { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } };
 600
 601 # include <errno.h>
 602 # ifndef EPROTO
 603 #  define EPROTO (ELAST + 1)
 604 # endif
 605
 606 # ifndef HAVE_IF_NAMETOINDEX
 607 #  define if_nametoindex(name)  atoi(name)
 608 # endif
 609 #endif
 610
 611 /* math.h */
 612
 613 #ifndef HAVE_NANF
 614 #define nanf(tagp) NAN
 615 #endif
 616
 617 #ifndef HAVE_SINCOS
 618 void sincos(double, double *, double *);
 619 void sincosf(float, float *, float *);
 620 #endif
 621
 622 #ifndef HAVE_REALPATH
 623 char *realpath(const char * restrict pathname, char * restrict resolved_path);
 624 #endif
 625
 626 #ifdef _WIN32
 627 FILE *vlc_win32_tmpfile(void);
 628 #endif
 629
 630 /* mingw-w64 has a broken IN6_IS_ADDR_MULTICAST macro */
 631 #if defined(_WIN32) && defined(__MINGW64_VERSION_MAJOR)
 632 # define IN6_IS_ADDR_MULTICAST IN6_IS_ADDR_MULTICAST
 633 #endif
 634
 635 #ifdef __APPLE__
 636 # define fdatasync fsync
 637 #endif
 638
 639 #ifdef __cplusplus
 640 } /* extern "C" */
 641 #endif
 642
 643 #endif /* !LIBVLC_FIXUPS_H */