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 #ifndef HAVE_SETENV
 299 int setenv (const char *, const char *, int);
 300 int unsetenv (const char *);
 301 #endif
 302
 303 #ifndef HAVE_POSIX_MEMALIGN
 304 int posix_memalign(void **, size_t, size_t);
 305 #endif
 306
 307 #ifndef HAVE_ALIGNED_ALLOC
 308 void *aligned_alloc(size_t, size_t);
 309 #endif
 310
 311 #if defined (_WIN32) && defined(__MINGW32__)
 312 #define aligned_free(ptr)  __mingw_aligned_free(ptr)
 313 #elif defined (_WIN32) && defined(_MSC_VER)
 314 #define aligned_free(ptr)  _aligned_free(ptr)
 315 #else
 316 #define aligned_free(ptr)  free(ptr)
 317 #endif
 318
 319 #if defined(__native_client__) && defined(__cplusplus)
 320 # define HAVE_USELOCALE
 321 #endif
 322
 323 #if !defined(HAVE_NEWLOCALE) && defined(HAVE_CXX_LOCALE_T) && defined(__cplusplus)
 324 # include <locale>
 325 # define HAVE_NEWLOCALE
 326 #endif
 327
 328 /* locale.h */
 329 #ifndef HAVE_USELOCALE
 330 # ifndef HAVE_NEWLOCALE
 331 #  define LC_ALL_MASK      0
 332 #  define LC_NUMERIC_MASK  0
 333 #  define LC_MESSAGES_MASK 0
 334 #  define LC_GLOBAL_LOCALE ((locale_t)(uintptr_t)1)
 335 typedef void *locale_t;
 336
 337 static inline void freelocale(locale_t loc)
 338 {
 339     (void)loc;
 340 }
 341 static inline locale_t newlocale(int mask, const char * locale, locale_t base)
 342 {
 343     (void)mask; (void)locale; (void)base;
 344     return NULL;
 345 }
 346 # else
 347 #  include <locale.h>
 348 # endif
 349
 350 static inline locale_t uselocale(locale_t loc)
 351 {
 352     (void)loc;
 353     return NULL;
 354 }
 355 #endif
 356
 357 #if !defined (HAVE_STATIC_ASSERT) && !defined(__cpp_static_assert)
 358 # define STATIC_ASSERT_CONCAT_(a, b) a##b
 359 # define STATIC_ASSERT_CONCAT(a, b) STATIC_ASSERT_CONCAT_(a, b)
 360 # define _Static_assert(x, s) extern char STATIC_ASSERT_CONCAT(static_assert_, __LINE__)[sizeof(struct { unsigned:-!(x); })]
 361 # define static_assert _Static_assert
 362 #endif
 363
 364 /* libintl support */
 365 #define _(str)            vlc_gettext (str)
 366 #define N_(str)           gettext_noop (str)
 367 #define gettext_noop(str) (str)
 368
 369 #ifdef __cplusplus
 370 extern "C" {
 371 #endif
 372
 373 #ifndef HAVE_SWAB
 374 void swab (const void *, void *, ssize_t);
 375 #endif
 376
 377 /* Socket stuff */
 378 #ifndef HAVE_INET_PTON
 379 # ifndef _WIN32
 380 #  include <sys/socket.h>
 381 #else
 382 typedef int socklen_t;
 383 # endif
 384 int inet_pton(int, const char *, void *);
 385 const char *inet_ntop(int, const void *, char *, socklen_t);
 386 #endif
 387
 388 /* NaCl has a broken netinet/tcp.h, so TCP_NODELAY is not set */
 389 #if defined(__native_client__) && !defined( HAVE_NETINET_TCP_H )
 390 #  define TCP_NODELAY 1
 391 #endif
 392
 393 #ifndef HAVE_STRUCT_POLLFD
 394 enum
 395 {
 396     POLLERR=0x1,
 397     POLLHUP=0x2,
 398     POLLNVAL=0x4,
 399     POLLWRNORM=0x10,
 400     POLLWRBAND=0x20,
 401     POLLRDNORM=0x100,
 402     POLLRDBAND=0x200,
 403     POLLPRI=0x400,
 404 };
 405 #define POLLIN  (POLLRDNORM|POLLRDBAND)
 406 #define POLLOUT (POLLWRNORM|POLLWRBAND)
 407
 408 struct pollfd
 409 {
 410     int fd;
 411     short events;
 412     short revents;
 413 };
 414 #endif
 415 #ifndef HAVE_POLL
 416 struct pollfd;
 417 int poll (struct pollfd *, unsigned, int);
 418 #endif
 419
 420 #ifndef HAVE_IF_NAMEINDEX
 421 #include <errno.h>
 422 # ifndef HAVE_STRUCT_IF_NAMEINDEX
 423 struct if_nameindex
 424 {
 425     unsigned if_index;
 426     char    *if_name;
 427 };
 428 # endif
 429 # define if_nameindex()         (errno = ENOBUFS, NULL)
 430 # define if_freenameindex(list) (void)0
 431 #endif
 432
 433 #ifndef HAVE_STRUCT_TIMESPEC
 434 struct timespec {
 435     time_t  tv_sec;   /* Seconds */
 436     long    tv_nsec;  /* Nanoseconds */
 437 };
 438 #endif
 439
 440 #ifdef _WIN32
 441 struct iovec
 442 {
 443     void  *iov_base;
 444     size_t iov_len;
 445 };
 446 #define IOV_MAX 255
 447 struct msghdr
 448 {
 449     void         *msg_name;
 450     size_t        msg_namelen;
 451     struct iovec *msg_iov;
 452     size_t        msg_iovlen;
 453     void         *msg_control;
 454     size_t        msg_controllen;
 455     int           msg_flags;
 456 };
 457 #endif
 458
 459 #ifdef _NEWLIB_VERSION
 460 #define IOV_MAX 255
 461 #endif
 462
 463 #ifndef HAVE_RECVMSG
 464 struct msghdr;
 465 ssize_t recvmsg(int, struct msghdr *, int);
 466 #endif
 467
 468 #ifndef HAVE_SENDMSG
 469 struct msghdr;
 470 ssize_t sendmsg(int, const struct msghdr *, int);
 471 #endif
 472
 473 /* search.h */
 474 #ifndef HAVE_SEARCH_H
 475 typedef struct entry {
 476     char *key;
 477     void *data;
 478 } ENTRY;
 479
 480 typedef enum {
 481     FIND, ENTER
 482 } ACTION;
 483
 484 typedef enum {
 485     preorder,
 486     postorder,
 487     endorder,
 488     leaf
 489 } VISIT;
 490
 491 void *tsearch( const void *key, void **rootp, int(*cmp)(const void *, const void *) );
 492 void *tfind( const void *key, const void **rootp, int(*cmp)(const void *, const void *) );
 493 void *tdelete( const void *key, void **rootp, int(*cmp)(const void *, const void *) );
 494 void twalk( const void *root, void(*action)(const void *nodep, VISIT which, int depth) );
 495 void *lfind( const void *key, const void *base, size_t *nmemb,
 496              size_t size, int(*cmp)(const void *, const void *) );
 497 #endif /* HAVE_SEARCH_H */
 498
 499 #ifdef _WIN64
 500 # ifdef HAVE_SEARCH_H
 501 #  include <search.h>
 502 # endif
 503 /* the Win32 prototype of lfind() expects an unsigned* for 'nelp' */
 504 # define lfind(a,b,c,d,e) \
 505          lfind((a),(b), &(unsigned){ (*(c) > UINT_MAX) ? UINT_MAX : *(c) }, (d),(e))
 506 #endif /* _WIN64 */
 507
 508 #ifndef HAVE_TDESTROY
 509 void tdestroy( void *root, void (*free_node)(void *nodep) );
 510 #endif
 511
 512 /* Random numbers */
 513 #ifndef HAVE_NRAND48
 514 double erand48 (unsigned short subi[3]);
 515 long jrand48 (unsigned short subi[3]);
 516 long nrand48 (unsigned short subi[3]);
 517 #endif
 518
 519 #ifdef __OS2__
 520 # undef HAVE_FORK   /* Implementation of fork() is imperfect on OS/2 */
 521
 522 # define SHUT_RD    0
 523 # define SHUT_WR    1
 524 # define SHUT_RDWR  2
 525
 526 /* GAI error codes */
 527 # ifndef EAI_BADFLAGS
 528 #  define EAI_BADFLAGS -1
 529 # endif
 530 # ifndef EAI_NONAME
 531 #  define EAI_NONAME -2
 532 # endif
 533 # ifndef EAI_AGAIN
 534 #  define EAI_AGAIN -3
 535 # endif
 536 # ifndef EAI_FAIL
 537 #  define EAI_FAIL -4
 538 # endif
 539 # ifndef EAI_NODATA
 540 #  define EAI_NODATA -5
 541 # endif
 542 # ifndef EAI_FAMILY
 543 #  define EAI_FAMILY -6
 544 # endif
 545 # ifndef EAI_SOCKTYPE
 546 #  define EAI_SOCKTYPE -7
 547 # endif
 548 # ifndef EAI_SERVICE
 549 #  define EAI_SERVICE -8
 550 # endif
 551 # ifndef EAI_ADDRFAMILY
 552 #  define EAI_ADDRFAMILY -9
 553 # endif
 554 # ifndef EAI_MEMORY
 555 #  define EAI_MEMORY -10
 556 # endif
 557 # ifndef EAI_OVERFLOW
 558 #  define EAI_OVERFLOW -11
 559 # endif
 560 # ifndef EAI_SYSTEM
 561 #  define EAI_SYSTEM -12
 562 # endif
 563
 564 # ifndef NI_NUMERICHOST
 565 #  define NI_NUMERICHOST 0x01
 566 #  define NI_NUMERICSERV 0x02
 567 #  define NI_NOFQDN      0x04
 568 #  define NI_NAMEREQD    0x08
 569 #  define NI_DGRAM       0x10
 570 # endif
 571
 572 # ifndef NI_MAXHOST
 573 #  define NI_MAXHOST 1025
 574 #  define NI_MAXSERV 32
 575 # endif
 576
 577 # define AI_PASSIVE     1
 578 # define AI_CANONNAME   2
 579 # define AI_NUMERICHOST 4
 580
 581 struct addrinfo
 582 {
 583     int ai_flags;
 584     int ai_family;
 585     int ai_socktype;
 586     int ai_protocol;
 587     size_t ai_addrlen;
 588     struct sockaddr *ai_addr;
 589     char *ai_canonname;
 590     struct addrinfo *ai_next;
 591 };
 592
 593 const char *gai_strerror (int);
 594
 595 int  getaddrinfo  (const char *node, const char *service,
 596                    const struct addrinfo *hints, struct addrinfo **res);
 597 void freeaddrinfo (struct addrinfo *res);
 598 int  getnameinfo  (const struct sockaddr *sa, socklen_t salen,
 599                    char *host, int hostlen, char *serv, int servlen,
 600                    int flags);
 601
 602 /* OS/2 does not support IPv6, yet. But declare these only for compilation */
 603 # include <stdint.h>
 604
 605 struct in6_addr
 606 {
 607     uint8_t s6_addr[16];
 608 };
 609
 610 struct sockaddr_in6
 611 {
 612     uint8_t         sin6_len;
 613     uint8_t         sin6_family;
 614     uint16_t        sin6_port;
 615     uint32_t        sin6_flowinfo;
 616     struct in6_addr sin6_addr;
 617     uint32_t        sin6_scope_id;
 618 };
 619
 620 # define IN6_IS_ADDR_MULTICAST(a)   (((__const uint8_t *) (a))[0] == 0xff)
 621
 622 static const struct in6_addr in6addr_any =
 623     { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } };
 624
 625 # include <errno.h>
 626 # ifndef EPROTO
 627 #  define EPROTO (ELAST + 1)
 628 # endif
 629
 630 # ifndef HAVE_IF_NAMETOINDEX
 631 #  define if_nametoindex(name)  atoi(name)
 632 # endif
 633 #endif
 634
 635 /* math.h */
 636
 637 #ifndef HAVE_NANF
 638 #define nanf(tagp) NAN
 639 #endif
 640
 641 #ifndef HAVE_SINCOS
 642 void sincos(double, double *, double *);
 643 void sincosf(float, float *, float *);
 644 #endif
 645
 646 #ifndef HAVE_REALPATH
 647 char *realpath(const char * restrict pathname, char * restrict resolved_path);
 648 #endif
 649
 650 #ifdef _WIN32
 651 FILE *vlc_win32_tmpfile(void);
 652 #endif
 653
 654 /* mingw-w64 has a broken IN6_IS_ADDR_MULTICAST macro */
 655 #if defined(_WIN32) && defined(__MINGW64_VERSION_MAJOR)
 656 # define IN6_IS_ADDR_MULTICAST IN6_IS_ADDR_MULTICAST
 657 #endif
 658
 659 #ifdef __APPLE__
 660 # define fdatasync fsync
 661 #endif
 662
 663 #ifdef __cplusplus
 664 } /* extern "C" */
 665 #endif
 666
 667 #endif /* !LIBVLC_FIXUPS_H */