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