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_QSORT_R) || \
  94     !defined (HAVE_STRLCPY) || \
  95     !defined (HAVE_STRNDUP) || \
  96     !defined (HAVE_STRNLEN) || \
  97     !defined (HAVE_STRNSTR)
  98 # include <stddef.h> /* size_t */
  99 #endif
 100
 101 #ifndef HAVE_VASPRINTF
 102 # include <stdarg.h> /* va_list */
 103 #endif
 104
 105 #if !defined (HAVE_GETDELIM) || \
 106     !defined (HAVE_GETPID)   || \
 107     !defined (HAVE_SWAB)
 108 # include <sys/types.h> /* ssize_t, pid_t */
 109 #endif
 110
 111 #if !defined (HAVE_DIRFD) || \
 112     !defined (HAVE_FDOPENDIR)
 113 # include <dirent.h>
 114 #endif
 115
 116 #ifdef __cplusplus
 117 # define VLC_NOTHROW throw ()
 118 extern "C" {
 119 #else
 120 # define VLC_NOTHROW
 121 #endif
 122
 123 /* signal.h */
 124 #if !defined(HAVE_SIGWAIT) && defined(__native_client__)
 125 /* NaCl does not define sigwait in signal.h. We need to include it here to
 126  * define sigwait, because sigset_t is allowed to be either an integral or a
 127  * struct. */
 128 #include <signal.h>
 129 int sigwait(const sigset_t *set, int *sig);
 130 #endif
 131
 132 /* stddef.h */
 133 #if !defined (__cplusplus) && !defined (HAVE_MAX_ALIGN_T)
 134 typedef struct {
 135   long long ll;
 136   long double ld;
 137 } max_align_t;
 138 #endif
 139
 140 /* stdio.h */
 141 #ifndef HAVE_ASPRINTF
 142 int asprintf (char **, const char *, ...);
 143 #endif
 144
 145 #ifndef HAVE_FLOCKFILE
 146 void flockfile (FILE *);
 147 void funlockfile (FILE *);
 148 int getc_unlocked (FILE *);
 149 int getchar_unlocked (void);
 150 int putc_unlocked (int, FILE *);
 151 int putchar_unlocked (int);
 152 #endif
 153
 154 #ifndef HAVE_GETDELIM
 155 ssize_t getdelim (char **, size_t *, int, FILE *);
 156 ssize_t getline (char **, size_t *, FILE *);
 157 #endif
 158
 159 #ifndef HAVE_REWIND
 160 void rewind (FILE *);
 161 #endif
 162
 163 #ifndef HAVE_VASPRINTF
 164 int vasprintf (char **, const char *, va_list);
 165 #endif
 166
 167 /* string.h */
 168 #ifndef HAVE_MEMRCHR
 169 void *memrchr(const void *, int, size_t);
 170 #endif
 171
 172 #ifndef HAVE_STRCASECMP
 173 int strcasecmp (const char *, const char *);
 174 #endif
 175
 176 #ifndef HAVE_STRCASESTR
 177 char *strcasestr (const char *, const char *);
 178 #endif
 179
 180 #ifndef HAVE_STRDUP
 181 char *strdup (const char *);
 182 #endif
 183
 184 #ifndef HAVE_STRVERSCMP
 185 int strverscmp (const char *, const char *);
 186 #endif
 187
 188 #ifndef HAVE_STRNLEN
 189 size_t strnlen (const char *, size_t);
 190 #endif
 191
 192 #ifndef HAVE_STRNSTR
 193 char * strnstr (const char *, const char *, size_t);
 194 #endif
 195
 196 #ifndef HAVE_STRNDUP
 197 char *strndup (const char *, size_t);
 198 #endif
 199
 200 #ifndef HAVE_STRLCPY
 201 size_t strlcpy (char *, const char *, size_t);
 202 #endif
 203
 204 #ifndef HAVE_STRSEP
 205 char *strsep (char **, const char *);
 206 #endif
 207
 208 #ifndef HAVE_STRTOK_R
 209 char *strtok_r(char *, const char *, char **);
 210 #endif
 211
 212 /* stdlib.h */
 213 #ifndef HAVE_ATOF
 214 #ifndef __ANDROID__
 215 double atof (const char *);
 216 #endif
 217 #endif
 218
 219 #ifndef HAVE_ATOLL
 220 long long atoll (const char *);
 221 #endif
 222
 223 #ifndef HAVE_LLDIV
 224 lldiv_t lldiv (long long, long long);
 225 #endif
 226
 227 #ifndef HAVE_STRTOF
 228 #ifndef __ANDROID__
 229 float strtof (const char *, char **);
 230 #endif
 231 #endif
 232
 233 #ifndef HAVE_STRTOLL
 234 long long int strtoll (const char *, char **, int);
 235 #endif
 236
 237 /* time.h */
 238 #ifndef HAVE_GMTIME_R
 239 struct tm *gmtime_r (const time_t *, struct tm *);
 240 #endif
 241
 242 #ifndef HAVE_LOCALTIME_R
 243 struct tm *localtime_r (const time_t *, struct tm *);
 244 #endif
 245
 246 #ifndef HAVE_TIMEGM
 247 time_t timegm(struct tm *);
 248 #endif
 249
 250 #ifndef HAVE_TIMESPEC_GET
 251 #define TIME_UTC 1
 252 struct timespec;
 253 int timespec_get(struct timespec *, int);
 254 #endif
 255
 256 /* sys/time.h */
 257 #ifndef HAVE_GETTIMEOFDAY
 258 struct timezone;
 259 int gettimeofday(struct timeval *, struct timezone *);
 260 #endif
 261
 262 /* unistd.h */
 263 #ifndef HAVE_GETPID
 264 pid_t getpid (void) VLC_NOTHROW;
 265 #endif
 266
 267 #ifndef HAVE_FSYNC
 268 int fsync (int fd);
 269 #endif
 270
 271 #ifndef HAVE_PATHCONF
 272 long pathconf (const char *path, int name);
 273 #endif
 274
 275 /* dirent.h */
 276 #ifndef HAVE_DIRFD
 277 int (dirfd) (DIR *);
 278 #endif
 279
 280 #ifndef HAVE_FDOPENDIR
 281 DIR *fdopendir (int);
 282 #endif
 283
 284 #ifdef __cplusplus
 285 } /* extern "C" */
 286 #endif
 287
 288 /* stdlib.h */
 289 #ifndef HAVE_GETENV
 290 static inline char *getenv (const char *name)
 291 {
 292     (void)name;
 293     return NULL;
 294 }
 295 #endif
 296
 297 #ifndef HAVE_SETENV
 298 int setenv (const char *, const char *, int);
 299 int unsetenv (const char *);
 300 #endif
 301
 302 #ifndef HAVE_ALIGNED_ALLOC
 303 void *aligned_alloc(size_t, size_t);
 304 #endif
 305
 306 #if defined (_WIN32) && defined(__MINGW32__)
 307 #define aligned_free(ptr)  __mingw_aligned_free(ptr)
 308 #elif defined (_WIN32) && defined(_MSC_VER)
 309 #define aligned_free(ptr)  _aligned_free(ptr)
 310 #else
 311 #define aligned_free(ptr)  free(ptr)
 312 #endif
 313
 314 #if defined(__native_client__) && defined(__cplusplus)
 315 # define HAVE_USELOCALE
 316 #endif
 317
 318 #if !defined(HAVE_NEWLOCALE) && defined(HAVE_CXX_LOCALE_T) && defined(__cplusplus)
 319 # include <locale>
 320 # define HAVE_NEWLOCALE
 321 #endif
 322
 323 /* locale.h */
 324 #ifndef HAVE_USELOCALE
 325 # ifndef HAVE_NEWLOCALE
 326 #  define LC_ALL_MASK      0
 327 #  define LC_NUMERIC_MASK  0
 328 #  define LC_MESSAGES_MASK 0
 329 #  define LC_GLOBAL_LOCALE ((locale_t)(uintptr_t)1)
 330 typedef void *locale_t;
 331
 332 static inline void freelocale(locale_t loc)
 333 {
 334     (void)loc;
 335 }
 336 static inline locale_t newlocale(int mask, const char * locale, locale_t base)
 337 {
 338     (void)mask; (void)locale; (void)base;
 339     return NULL;
 340 }
 341 # else
 342 #  include <locale.h>
 343 # endif
 344
 345 static inline locale_t uselocale(locale_t loc)
 346 {
 347     (void)loc;
 348     return NULL;
 349 }
 350 #endif
 351
 352 #if !defined (HAVE_STATIC_ASSERT) && !defined(__cpp_static_assert)
 353 # define STATIC_ASSERT_CONCAT_(a, b) a##b
 354 # define STATIC_ASSERT_CONCAT(a, b) STATIC_ASSERT_CONCAT_(a, b)
 355 # define _Static_assert(x, s) extern char STATIC_ASSERT_CONCAT(static_assert_, __LINE__)[sizeof(struct { unsigned:-!(x); })]
 356 # define static_assert _Static_assert
 357 #endif
 358
 359 /* libintl support */
 360 #define _(str)            vlc_gettext (str)
 361 #define N_(str)           gettext_noop (str)
 362 #define gettext_noop(str) (str)
 363
 364 #ifdef __cplusplus
 365 extern "C" {
 366 #endif
 367
 368 #ifndef HAVE_SWAB
 369 void swab (const void *, void *, ssize_t);
 370 #endif
 371
 372 /* Socket stuff */
 373 #ifndef HAVE_INET_PTON
 374 # ifndef _WIN32
 375 #  include <sys/socket.h>
 376 #else
 377 typedef int socklen_t;
 378 # endif
 379 int inet_pton(int, const char *, void *);
 380 const char *inet_ntop(int, const void *, char *, socklen_t);
 381 #endif
 382
 383 /* NaCl has a broken netinet/tcp.h, so TCP_NODELAY is not set */
 384 #if defined(__native_client__) && !defined( HAVE_NETINET_TCP_H )
 385 #  define TCP_NODELAY 1
 386 #endif
 387
 388 #ifndef HAVE_STRUCT_POLLFD
 389 enum
 390 {
 391     POLLERR=0x1,
 392     POLLHUP=0x2,
 393     POLLNVAL=0x4,
 394     POLLWRNORM=0x10,
 395     POLLWRBAND=0x20,
 396     POLLRDNORM=0x100,
 397     POLLRDBAND=0x200,
 398     POLLPRI=0x400,
 399 };
 400 #define POLLIN  (POLLRDNORM|POLLRDBAND)
 401 #define POLLOUT (POLLWRNORM|POLLWRBAND)
 402
 403 struct pollfd
 404 {
 405     int fd;
 406     short events;
 407     short revents;
 408 };
 409 #endif
 410 #ifndef HAVE_POLL
 411 struct pollfd;
 412 int poll (struct pollfd *, unsigned, int);
 413 #endif
 414
 415 #ifndef HAVE_IF_NAMEINDEX
 416 #include <errno.h>
 417 # ifndef HAVE_STRUCT_IF_NAMEINDEX
 418 struct if_nameindex
 419 {
 420     unsigned if_index;
 421     char    *if_name;
 422 };
 423 # endif
 424 # define if_nameindex()         (errno = ENOBUFS, NULL)
 425 # define if_freenameindex(list) (void)0
 426 #endif
 427
 428 #ifndef HAVE_STRUCT_TIMESPEC
 429 struct timespec {
 430     time_t  tv_sec;   /* Seconds */
 431     long    tv_nsec;  /* Nanoseconds */
 432 };
 433 #endif
 434
 435 #ifdef _WIN32
 436 struct iovec
 437 {
 438     void  *iov_base;
 439     size_t iov_len;
 440 };
 441 #define IOV_MAX 255
 442 struct msghdr
 443 {
 444     void         *msg_name;
 445     size_t        msg_namelen;
 446     struct iovec *msg_iov;
 447     size_t        msg_iovlen;
 448     void         *msg_control;
 449     size_t        msg_controllen;
 450     int           msg_flags;
 451 };
 452 #endif
 453
 454 #ifdef _NEWLIB_VERSION
 455 #define IOV_MAX 255
 456 #endif
 457
 458 #ifndef HAVE_RECVMSG
 459 struct msghdr;
 460 ssize_t recvmsg(int, struct msghdr *, int);
 461 #endif
 462
 463 #ifndef HAVE_SENDMSG
 464 struct msghdr;
 465 ssize_t sendmsg(int, const struct msghdr *, int);
 466 #endif
 467
 468 /* search.h */
 469 #ifndef HAVE_SEARCH_H
 470 typedef struct entry {
 471     char *key;
 472     void *data;
 473 } ENTRY;
 474
 475 typedef enum {
 476     FIND, ENTER
 477 } ACTION;
 478
 479 typedef enum {
 480     preorder,
 481     postorder,
 482     endorder,
 483     leaf
 484 } VISIT;
 485
 486 void *tsearch( const void *key, void **rootp, int(*cmp)(const void *, const void *) );
 487 void *tfind( const void *key, const void **rootp, int(*cmp)(const void *, const void *) );
 488 void *tdelete( const void *key, void **rootp, int(*cmp)(const void *, const void *) );
 489 void twalk( const void *root, void(*action)(const void *nodep, VISIT which, int depth) );
 490 void *lfind( const void *key, const void *base, size_t *nmemb,
 491              size_t size, int(*cmp)(const void *, const void *) );
 492 #endif /* HAVE_SEARCH_H */
 493 #ifndef HAVE_TDESTROY
 494 void tdestroy( void *root, void (*free_node)(void *nodep) );
 495 #endif
 496
 497 /* Random numbers */
 498 #ifndef HAVE_NRAND48
 499 double erand48 (unsigned short subi[3]);
 500 long jrand48 (unsigned short subi[3]);
 501 long nrand48 (unsigned short subi[3]);
 502 #endif
 503
 504 #ifdef __OS2__
 505 # undef HAVE_FORK   /* Implementation of fork() is imperfect on OS/2 */
 506
 507 # define SHUT_RD    0
 508 # define SHUT_WR    1
 509 # define SHUT_RDWR  2
 510
 511 /* GAI error codes */
 512 # ifndef EAI_BADFLAGS
 513 #  define EAI_BADFLAGS -1
 514 # endif
 515 # ifndef EAI_NONAME
 516 #  define EAI_NONAME -2
 517 # endif
 518 # ifndef EAI_AGAIN
 519 #  define EAI_AGAIN -3
 520 # endif
 521 # ifndef EAI_FAIL
 522 #  define EAI_FAIL -4
 523 # endif
 524 # ifndef EAI_NODATA
 525 #  define EAI_NODATA -5
 526 # endif
 527 # ifndef EAI_FAMILY
 528 #  define EAI_FAMILY -6
 529 # endif
 530 # ifndef EAI_SOCKTYPE
 531 #  define EAI_SOCKTYPE -7
 532 # endif
 533 # ifndef EAI_SERVICE
 534 #  define EAI_SERVICE -8
 535 # endif
 536 # ifndef EAI_ADDRFAMILY
 537 #  define EAI_ADDRFAMILY -9
 538 # endif
 539 # ifndef EAI_MEMORY
 540 #  define EAI_MEMORY -10
 541 # endif
 542 # ifndef EAI_OVERFLOW
 543 #  define EAI_OVERFLOW -11
 544 # endif
 545 # ifndef EAI_SYSTEM
 546 #  define EAI_SYSTEM -12
 547 # endif
 548
 549 # ifndef NI_NUMERICHOST
 550 #  define NI_NUMERICHOST 0x01
 551 #  define NI_NUMERICSERV 0x02
 552 #  define NI_NOFQDN      0x04
 553 #  define NI_NAMEREQD    0x08
 554 #  define NI_DGRAM       0x10
 555 # endif
 556
 557 # ifndef NI_MAXHOST
 558 #  define NI_MAXHOST 1025
 559 #  define NI_MAXSERV 32
 560 # endif
 561
 562 # define AI_PASSIVE     1
 563 # define AI_CANONNAME   2
 564 # define AI_NUMERICHOST 4
 565
 566 struct addrinfo
 567 {
 568     int ai_flags;
 569     int ai_family;
 570     int ai_socktype;
 571     int ai_protocol;
 572     size_t ai_addrlen;
 573     struct sockaddr *ai_addr;
 574     char *ai_canonname;
 575     struct addrinfo *ai_next;
 576 };
 577
 578 const char *gai_strerror (int);
 579
 580 int  getaddrinfo  (const char *node, const char *service,
 581                    const struct addrinfo *hints, struct addrinfo **res);
 582 void freeaddrinfo (struct addrinfo *res);
 583 int  getnameinfo  (const struct sockaddr *sa, socklen_t salen,
 584                    char *host, int hostlen, char *serv, int servlen,
 585                    int flags);
 586
 587 /* OS/2 does not support IPv6, yet. But declare these only for compilation */
 588 # include <stdint.h>
 589
 590 struct in6_addr
 591 {
 592     uint8_t s6_addr[16];
 593 };
 594
 595 struct sockaddr_in6
 596 {
 597     uint8_t         sin6_len;
 598     uint8_t         sin6_family;
 599     uint16_t        sin6_port;
 600     uint32_t        sin6_flowinfo;
 601     struct in6_addr sin6_addr;
 602     uint32_t        sin6_scope_id;
 603 };
 604
 605 # define IN6_IS_ADDR_MULTICAST(a)   (((__const uint8_t *) (a))[0] == 0xff)
 606
 607 static const struct in6_addr in6addr_any =
 608     { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } };
 609
 610 # include <errno.h>
 611 # ifndef EPROTO
 612 #  define EPROTO (ELAST + 1)
 613 # endif
 614
 615 # ifndef HAVE_IF_NAMETOINDEX
 616 #  define if_nametoindex(name)  atoi(name)
 617 # endif
 618 #endif
 619
 620 /* math.h */
 621
 622 #ifndef HAVE_NANF
 623 #define nanf(tagp) NAN
 624 #endif
 625
 626 #ifndef HAVE_SINCOS
 627 void sincos(double, double *, double *);
 628 void sincosf(float, float *, float *);
 629 #endif
 630
 631 #ifndef HAVE_REALPATH
 632 char *realpath(const char * restrict pathname, char * restrict resolved_path);
 633 #endif
 634
 635 #ifdef _WIN32
 636 FILE *vlc_win32_tmpfile(void);
 637 #endif
 638
 639 /* mingw-w64 has a broken IN6_IS_ADDR_MULTICAST macro */
 640 #if defined(_WIN32) && defined(__MINGW64_VERSION_MAJOR)
 641 # define IN6_IS_ADDR_MULTICAST IN6_IS_ADDR_MULTICAST
 642 #endif
 643
 644 #ifdef __APPLE__
 645 # define fdatasync fsync
 646 #endif
 647
 648 #ifdef __cplusplus
 649 } /* extern "C" */
 650 #endif
 651
 652 #endif /* !LIBVLC_FIXUPS_H */