lib/unistd.in.h

   1 /* Substitute for and wrapper around <unistd.h>.
   2    Copyright (C) 2003-2013 Free Software Foundation, Inc.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3, or (at your option)
   7    any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, see <http://www.gnu.org/licenses/>.  */
  16
  17 #if __GNUC__ >= 3
  18 @PRAGMA_SYSTEM_HEADER@
  19 #endif
  20 @PRAGMA_COLUMNS@
  21
  22 /* Special invocation convention:
  23    - On mingw, several headers, including <winsock2.h>, include <unistd.h>,
  24      but we need to ensure that both the system <unistd.h> and <winsock2.h>
  25      are completely included before we replace gethostname.  */
  26 #if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@ \
  27   && !defined _GL_WINSOCK2_H_WITNESS && defined _WINSOCK2_H
  28 /* <unistd.h> is being indirectly included for the first time from
  29    <winsock2.h>; avoid declaring any overrides.  */
  30 # if @HAVE_UNISTD_H@
  31 #  @INCLUDE_NEXT@ @NEXT_UNISTD_H@
  32 # else
  33 #  error unexpected; report this to bug-gnulib@gnu.org
  34 # endif
  35 # define _GL_WINSOCK2_H_WITNESS
  36
  37 /* Normal invocation.  */
  38 #elif !defined _@GUARD_PREFIX@_UNISTD_H
  39
  40 /* The include_next requires a split double-inclusion guard.  */
  41 #if @HAVE_UNISTD_H@
  42 # @INCLUDE_NEXT@ @NEXT_UNISTD_H@
  43 #endif
  44
  45 /* Get all possible declarations of gethostname().  */
  46 #if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@ \
  47   && !defined _GL_INCLUDING_WINSOCK2_H
  48 # define _GL_INCLUDING_WINSOCK2_H
  49 # include <winsock2.h>
  50 # undef _GL_INCLUDING_WINSOCK2_H
  51 #endif
  52
  53 #if !defined _@GUARD_PREFIX@_UNISTD_H && !defined _GL_INCLUDING_WINSOCK2_H
  54 #define _@GUARD_PREFIX@_UNISTD_H
  55
  56 /* NetBSD 5.0 mis-defines NULL.  Also get size_t.  */
  57 #include <stddef.h>
  58
  59 /* mingw doesn't define the SEEK_* or *_FILENO macros in <unistd.h>.  */
  60 /* Cygwin 1.7.1 declares symlinkat in <stdio.h>, not in <unistd.h>.  */
  61 /* But avoid namespace pollution on glibc systems.  */
  62 #if (!(defined SEEK_CUR && defined SEEK_END && defined SEEK_SET) \
  63      || ((@GNULIB_SYMLINKAT@ || defined GNULIB_POSIXCHECK) \
  64          && defined __CYGWIN__)) \
  65     && ! defined __GLIBC__
  66 # include <stdio.h>
  67 #endif
  68
  69 /* Cygwin 1.7.1 declares unlinkat in <fcntl.h>, not in <unistd.h>.  */
  70 /* But avoid namespace pollution on glibc systems.  */
  71 #if (@GNULIB_UNLINKAT@ || defined GNULIB_POSIXCHECK) && defined __CYGWIN__ \
  72     && ! defined __GLIBC__
  73 # include <fcntl.h>
  74 #endif
  75
  76 /* mingw fails to declare _exit in <unistd.h>.  */
  77 /* mingw, MSVC, BeOS, Haiku declare environ in <stdlib.h>, not in
  78    <unistd.h>.  */
  79 /* Solaris declares getcwd not only in <unistd.h> but also in <stdlib.h>.  */
  80 /* But avoid namespace pollution on glibc systems.  */
  81 #ifndef __GLIBC__
  82 # define __need_system_stdlib_h
  83 # include <stdlib.h>
  84 # undef __need_system_stdlib_h
  85 #endif
  86
  87 /* Native Windows platforms declare chdir, getcwd, rmdir in
  88    <io.h> and/or <direct.h>, not in <unistd.h>.
  89    They also declare access(), chmod(), close(), dup(), dup2(), isatty(),
  90    lseek(), read(), unlink(), write() in <io.h>.  */
  91 #if ((@GNULIB_CHDIR@ || @GNULIB_GETCWD@ || @GNULIB_RMDIR@ \
  92       || defined GNULIB_POSIXCHECK) \
  93      && ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__))
  94 # include <io.h>     /* mingw32, mingw64 */
  95 # include <direct.h> /* mingw64, MSVC 9 */
  96 #elif (@GNULIB_CLOSE@ || @GNULIB_DUP@ || @GNULIB_DUP2@ || @GNULIB_ISATTY@ \
  97        || @GNULIB_LSEEK@ || @GNULIB_READ@ || @GNULIB_UNLINK@ || @GNULIB_WRITE@ \
  98        || defined GNULIB_POSIXCHECK) \
  99       && ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__)
 100 # include <io.h>
 101 #endif
 102
 103 /* AIX and OSF/1 5.1 declare getdomainname in <netdb.h>, not in <unistd.h>.
 104    NonStop Kernel declares gethostname in <netdb.h>, not in <unistd.h>.  */
 105 /* But avoid namespace pollution on glibc systems.  */
 106 #if ((@GNULIB_GETDOMAINNAME@ && (defined _AIX || defined __osf__)) \
 107      || (@GNULIB_GETHOSTNAME@ && defined __TANDEM)) \
 108     && !defined __GLIBC__
 109 # include <netdb.h>
 110 #endif
 111
 112 /* MSVC defines off_t in <sys/types.h>.
 113    May also define off_t to a 64-bit type on native Windows.  */
 114 #if !@HAVE_UNISTD_H@ || @WINDOWS_64_BIT_OFF_T@
 115 /* Get off_t.  */
 116 # include <sys/types.h>
 117 #endif
 118
 119 #if (@GNULIB_READ@ || @GNULIB_WRITE@ \
 120      || @GNULIB_READLINK@ || @GNULIB_READLINKAT@ \
 121      || @GNULIB_PREAD@ || @GNULIB_PWRITE@ || defined GNULIB_POSIXCHECK)
 122 /* Get ssize_t.  */
 123 # include <sys/types.h>
 124 #endif
 125
 126 /* Get getopt(), optarg, optind, opterr, optopt.
 127    But avoid namespace pollution on glibc systems.  */
 128 #if @GNULIB_UNISTD_H_GETOPT@ && !defined __GLIBC__ && !defined _GL_SYSTEM_GETOPT
 129 # include <getopt.h>
 130 #endif
 131
 132 _GL_INLINE_HEADER_BEGIN
 133 #ifndef _GL_UNISTD_INLINE
 134 # define _GL_UNISTD_INLINE _GL_INLINE
 135 #endif
 136
 137 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
 138
 139 /* The definition of _GL_ARG_NONNULL is copied here.  */
 140
 141 /* The definition of _GL_WARN_ON_USE is copied here.  */
 142
 143
 144 /* Hide some function declarations from <winsock2.h>.  */
 145
 146 #if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@
 147 # if !defined _@GUARD_PREFIX@_SYS_SOCKET_H
 148 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 149 #   undef socket
 150 #   define socket              socket_used_without_including_sys_socket_h
 151 #   undef connect
 152 #   define connect             connect_used_without_including_sys_socket_h
 153 #   undef accept
 154 #   define accept              accept_used_without_including_sys_socket_h
 155 #   undef bind
 156 #   define bind                bind_used_without_including_sys_socket_h
 157 #   undef getpeername
 158 #   define getpeername         getpeername_used_without_including_sys_socket_h
 159 #   undef getsockname
 160 #   define getsockname         getsockname_used_without_including_sys_socket_h
 161 #   undef getsockopt
 162 #   define getsockopt          getsockopt_used_without_including_sys_socket_h
 163 #   undef listen
 164 #   define listen              listen_used_without_including_sys_socket_h
 165 #   undef recv
 166 #   define recv                recv_used_without_including_sys_socket_h
 167 #   undef send
 168 #   define send                send_used_without_including_sys_socket_h
 169 #   undef recvfrom
 170 #   define recvfrom            recvfrom_used_without_including_sys_socket_h
 171 #   undef sendto
 172 #   define sendto              sendto_used_without_including_sys_socket_h
 173 #   undef setsockopt
 174 #   define setsockopt          setsockopt_used_without_including_sys_socket_h
 175 #   undef shutdown
 176 #   define shutdown            shutdown_used_without_including_sys_socket_h
 177 #  else
 178     _GL_WARN_ON_USE (socket,
 179                      "socket() used without including <sys/socket.h>");
 180     _GL_WARN_ON_USE (connect,
 181                      "connect() used without including <sys/socket.h>");
 182     _GL_WARN_ON_USE (accept,
 183                      "accept() used without including <sys/socket.h>");
 184     _GL_WARN_ON_USE (bind,
 185                      "bind() used without including <sys/socket.h>");
 186     _GL_WARN_ON_USE (getpeername,
 187                      "getpeername() used without including <sys/socket.h>");
 188     _GL_WARN_ON_USE (getsockname,
 189                      "getsockname() used without including <sys/socket.h>");
 190     _GL_WARN_ON_USE (getsockopt,
 191                      "getsockopt() used without including <sys/socket.h>");
 192     _GL_WARN_ON_USE (listen,
 193                      "listen() used without including <sys/socket.h>");
 194     _GL_WARN_ON_USE (recv,
 195                      "recv() used without including <sys/socket.h>");
 196     _GL_WARN_ON_USE (send,
 197                      "send() used without including <sys/socket.h>");
 198     _GL_WARN_ON_USE (recvfrom,
 199                      "recvfrom() used without including <sys/socket.h>");
 200     _GL_WARN_ON_USE (sendto,
 201                      "sendto() used without including <sys/socket.h>");
 202     _GL_WARN_ON_USE (setsockopt,
 203                      "setsockopt() used without including <sys/socket.h>");
 204     _GL_WARN_ON_USE (shutdown,
 205                      "shutdown() used without including <sys/socket.h>");
 206 #  endif
 207 # endif
 208 # if !defined _@GUARD_PREFIX@_SYS_SELECT_H
 209 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 210 #   undef select
 211 #   define select              select_used_without_including_sys_select_h
 212 #  else
 213     _GL_WARN_ON_USE (select,
 214                      "select() used without including <sys/select.h>");
 215 #  endif
 216 # endif
 217 #endif
 218
 219
 220 /* OS/2 EMX lacks these macros.  */
 221 #ifndef STDIN_FILENO
 222 # define STDIN_FILENO 0
 223 #endif
 224 #ifndef STDOUT_FILENO
 225 # define STDOUT_FILENO 1
 226 #endif
 227 #ifndef STDERR_FILENO
 228 # define STDERR_FILENO 2
 229 #endif
 230
 231 /* Ensure *_OK macros exist.  */
 232 #ifndef F_OK
 233 # define F_OK 0
 234 # define X_OK 1
 235 # define W_OK 2
 236 # define R_OK 4
 237 #endif
 238
 239
 240 /* Declare overridden functions.  */
 241
 242
 243 #if defined GNULIB_POSIXCHECK
 244 /* The access() function is a security risk.  */
 245 _GL_WARN_ON_USE (access, "the access function is a security risk - "
 246                  "use the gnulib module faccessat instead");
 247 #endif
 248
 249
 250 #if @GNULIB_CHDIR@
 251 _GL_CXXALIAS_SYS (chdir, int, (const char *file) _GL_ARG_NONNULL ((1)));
 252 _GL_CXXALIASWARN (chdir);
 253 #elif defined GNULIB_POSIXCHECK
 254 # undef chdir
 255 # if HAVE_RAW_DECL_CHDIR
 256 _GL_WARN_ON_USE (chown, "chdir is not always in <unistd.h> - "
 257                  "use gnulib module chdir for portability");
 258 # endif
 259 #endif
 260
 261
 262 #if @GNULIB_CHOWN@
 263 /* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
 264    to GID (if GID is not -1).  Follow symbolic links.
 265    Return 0 if successful, otherwise -1 and errno set.
 266    See the POSIX:2008 specification
 267    <http://pubs.opengroup.org/onlinepubs/9699919799/functions/chown.html.  */
 268 # if @REPLACE_CHOWN@
 269 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 270 #   undef chown
 271 #   define chown rpl_chown
 272 #  endif
 273 _GL_FUNCDECL_RPL (chown, int, (const char *file, uid_t uid, gid_t gid)
 274                               _GL_ARG_NONNULL ((1)));
 275 _GL_CXXALIAS_RPL (chown, int, (const char *file, uid_t uid, gid_t gid));
 276 # else
 277 #  if !@HAVE_CHOWN@
 278 _GL_FUNCDECL_SYS (chown, int, (const char *file, uid_t uid, gid_t gid)
 279                               _GL_ARG_NONNULL ((1)));
 280 #  endif
 281 _GL_CXXALIAS_SYS (chown, int, (const char *file, uid_t uid, gid_t gid));
 282 # endif
 283 _GL_CXXALIASWARN (chown);
 284 #elif defined GNULIB_POSIXCHECK
 285 # undef chown
 286 # if HAVE_RAW_DECL_CHOWN
 287 _GL_WARN_ON_USE (chown, "chown fails to follow symlinks on some systems and "
 288                  "doesn't treat a uid or gid of -1 on some systems - "
 289                  "use gnulib module chown for portability");
 290 # endif
 291 #endif
 292
 293
 294 #if @GNULIB_CLOSE@
 295 # if @REPLACE_CLOSE@
 296 /* Automatically included by modules that need a replacement for close.  */
 297 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 298 #   undef close
 299 #   define close rpl_close
 300 #  endif
 301 _GL_FUNCDECL_RPL (close, int, (int fd));
 302 _GL_CXXALIAS_RPL (close, int, (int fd));
 303 # else
 304 _GL_CXXALIAS_SYS (close, int, (int fd));
 305 # endif
 306 _GL_CXXALIASWARN (close);
 307 #elif @UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@
 308 # undef close
 309 # define close close_used_without_requesting_gnulib_module_close
 310 #elif defined GNULIB_POSIXCHECK
 311 # undef close
 312 /* Assume close is always declared.  */
 313 _GL_WARN_ON_USE (close, "close does not portably work on sockets - "
 314                  "use gnulib module close for portability");
 315 #endif
 316
 317
 318 #if @GNULIB_DUP@
 319 # if @REPLACE_DUP@
 320 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 321 #   define dup rpl_dup
 322 #  endif
 323 _GL_FUNCDECL_RPL (dup, int, (int oldfd));
 324 _GL_CXXALIAS_RPL (dup, int, (int oldfd));
 325 # else
 326 _GL_CXXALIAS_SYS (dup, int, (int oldfd));
 327 # endif
 328 _GL_CXXALIASWARN (dup);
 329 #elif defined GNULIB_POSIXCHECK
 330 # undef dup
 331 # if HAVE_RAW_DECL_DUP
 332 _GL_WARN_ON_USE (dup, "dup is unportable - "
 333                  "use gnulib module dup for portability");
 334 # endif
 335 #endif
 336
 337
 338 #if @GNULIB_DUP2@
 339 /* Copy the file descriptor OLDFD into file descriptor NEWFD.  Do nothing if
 340    NEWFD = OLDFD, otherwise close NEWFD first if it is open.
 341    Return newfd if successful, otherwise -1 and errno set.
 342    See the POSIX:2008 specification
 343    <http://pubs.opengroup.org/onlinepubs/9699919799/functions/dup2.html>.  */
 344 # if @REPLACE_DUP2@
 345 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 346 #   define dup2 rpl_dup2
 347 #  endif
 348 _GL_FUNCDECL_RPL (dup2, int, (int oldfd, int newfd));
 349 _GL_CXXALIAS_RPL (dup2, int, (int oldfd, int newfd));
 350 # else
 351 #  if !@HAVE_DUP2@
 352 _GL_FUNCDECL_SYS (dup2, int, (int oldfd, int newfd));
 353 #  endif
 354 _GL_CXXALIAS_SYS (dup2, int, (int oldfd, int newfd));
 355 # endif
 356 _GL_CXXALIASWARN (dup2);
 357 #elif defined GNULIB_POSIXCHECK
 358 # undef dup2
 359 # if HAVE_RAW_DECL_DUP2
 360 _GL_WARN_ON_USE (dup2, "dup2 is unportable - "
 361                  "use gnulib module dup2 for portability");
 362 # endif
 363 #endif
 364
 365
 366 #if @GNULIB_DUP3@
 367 /* Copy the file descriptor OLDFD into file descriptor NEWFD, with the
 368    specified flags.
 369    The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
 370    and O_TEXT, O_BINARY (defined in "binary-io.h").
 371    Close NEWFD first if it is open.
 372    Return newfd if successful, otherwise -1 and errno set.
 373    See the Linux man page at
 374    <http://www.kernel.org/doc/man-pages/online/pages/man2/dup3.2.html>.  */
 375 # if @HAVE_DUP3@
 376 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 377 #   define dup3 rpl_dup3
 378 #  endif
 379 _GL_FUNCDECL_RPL (dup3, int, (int oldfd, int newfd, int flags));
 380 _GL_CXXALIAS_RPL (dup3, int, (int oldfd, int newfd, int flags));
 381 # else
 382 _GL_FUNCDECL_SYS (dup3, int, (int oldfd, int newfd, int flags));
 383 _GL_CXXALIAS_SYS (dup3, int, (int oldfd, int newfd, int flags));
 384 # endif
 385 _GL_CXXALIASWARN (dup3);
 386 #elif defined GNULIB_POSIXCHECK
 387 # undef dup3
 388 # if HAVE_RAW_DECL_DUP3
 389 _GL_WARN_ON_USE (dup3, "dup3 is unportable - "
 390                  "use gnulib module dup3 for portability");
 391 # endif
 392 #endif
 393
 394
 395 #if @GNULIB_ENVIRON@
 396 # if !@HAVE_DECL_ENVIRON@
 397 /* Set of environment variables and values.  An array of strings of the form
 398    "VARIABLE=VALUE", terminated with a NULL.  */
 399 #  if defined __APPLE__ && defined __MACH__
 400 #   include <crt_externs.h>
 401 #   define environ (*_NSGetEnviron ())
 402 #  else
 403 #   ifdef __cplusplus
 404 extern "C" {
 405 #   endif
 406 extern char **environ;
 407 #   ifdef __cplusplus
 408 }
 409 #   endif
 410 #  endif
 411 # endif
 412 #elif defined GNULIB_POSIXCHECK
 413 # if HAVE_RAW_DECL_ENVIRON
 414 _GL_UNISTD_INLINE char ***
 415 rpl_environ (void)
 416 {
 417   return &environ;
 418 }
 419 _GL_WARN_ON_USE (rpl_environ, "environ is unportable - "
 420                  "use gnulib module environ for portability");
 421 #  undef environ
 422 #  define environ (*rpl_environ ())
 423 # endif
 424 #endif
 425
 426
 427 #if @GNULIB_EUIDACCESS@
 428 /* Like access(), except that it uses the effective user id and group id of
 429    the current process.  */
 430 # if !@HAVE_EUIDACCESS@
 431 _GL_FUNCDECL_SYS (euidaccess, int, (const char *filename, int mode)
 432                                    _GL_ARG_NONNULL ((1)));
 433 # endif
 434 _GL_CXXALIAS_SYS (euidaccess, int, (const char *filename, int mode));
 435 _GL_CXXALIASWARN (euidaccess);
 436 # if defined GNULIB_POSIXCHECK
 437 /* Like access(), this function is a security risk.  */
 438 _GL_WARN_ON_USE (euidaccess, "the euidaccess function is a security risk - "
 439                  "use the gnulib module faccessat instead");
 440 # endif
 441 #elif defined GNULIB_POSIXCHECK
 442 # undef euidaccess
 443 # if HAVE_RAW_DECL_EUIDACCESS
 444 _GL_WARN_ON_USE (euidaccess, "euidaccess is unportable - "
 445                  "use gnulib module euidaccess for portability");
 446 # endif
 447 #endif
 448
 449
 450 #if @GNULIB_FACCESSAT@
 451 # if !@HAVE_FACCESSAT@
 452 _GL_FUNCDECL_SYS (faccessat, int,
 453                   (int fd, char const *file, int mode, int flag)
 454                   _GL_ARG_NONNULL ((2)));
 455 # endif
 456 _GL_CXXALIAS_SYS (faccessat, int,
 457                   (int fd, char const *file, int mode, int flag));
 458 _GL_CXXALIASWARN (faccessat);
 459 #elif defined GNULIB_POSIXCHECK
 460 # undef faccessat
 461 # if HAVE_RAW_DECL_FACCESSAT
 462 _GL_WARN_ON_USE (faccessat, "faccessat is not portable - "
 463                  "use gnulib module faccessat for portability");
 464 # endif
 465 #endif
 466
 467
 468 #if @GNULIB_FCHDIR@
 469 /* Change the process' current working directory to the directory on which
 470    the given file descriptor is open.
 471    Return 0 if successful, otherwise -1 and errno set.
 472    See the POSIX:2008 specification
 473    <http://pubs.opengroup.org/onlinepubs/9699919799/functions/fchdir.html>.  */
 474 # if ! @HAVE_FCHDIR@
 475 _GL_FUNCDECL_SYS (fchdir, int, (int /*fd*/));
 476
 477 /* Gnulib internal hooks needed to maintain the fchdir metadata.  */
 478 _GL_EXTERN_C int _gl_register_fd (int fd, const char *filename)
 479      _GL_ARG_NONNULL ((2));
 480 _GL_EXTERN_C void _gl_unregister_fd (int fd);
 481 _GL_EXTERN_C int _gl_register_dup (int oldfd, int newfd);
 482 _GL_EXTERN_C const char *_gl_directory_name (int fd);
 483
 484 # else
 485 #  if !@HAVE_DECL_FCHDIR@
 486 _GL_FUNCDECL_SYS (fchdir, int, (int /*fd*/));
 487 #  endif
 488 # endif
 489 _GL_CXXALIAS_SYS (fchdir, int, (int /*fd*/));
 490 _GL_CXXALIASWARN (fchdir);
 491 #elif defined GNULIB_POSIXCHECK
 492 # undef fchdir
 493 # if HAVE_RAW_DECL_FCHDIR
 494 _GL_WARN_ON_USE (fchdir, "fchdir is unportable - "
 495                  "use gnulib module fchdir for portability");
 496 # endif
 497 #endif
 498
 499
 500 #if @GNULIB_FCHOWNAT@
 501 # if @REPLACE_FCHOWNAT@
 502 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 503 #   undef fchownat
 504 #   define fchownat rpl_fchownat
 505 #  endif
 506 _GL_FUNCDECL_RPL (fchownat, int, (int fd, char const *file,
 507                                   uid_t owner, gid_t group, int flag)
 508                                  _GL_ARG_NONNULL ((2)));
 509 _GL_CXXALIAS_RPL (fchownat, int, (int fd, char const *file,
 510                                   uid_t owner, gid_t group, int flag));
 511 # else
 512 #  if !@HAVE_FCHOWNAT@
 513 _GL_FUNCDECL_SYS (fchownat, int, (int fd, char const *file,
 514                                   uid_t owner, gid_t group, int flag)
 515                                  _GL_ARG_NONNULL ((2)));
 516 #  endif
 517 _GL_CXXALIAS_SYS (fchownat, int, (int fd, char const *file,
 518                                   uid_t owner, gid_t group, int flag));
 519 # endif
 520 _GL_CXXALIASWARN (fchownat);
 521 #elif defined GNULIB_POSIXCHECK
 522 # undef fchownat
 523 # if HAVE_RAW_DECL_FCHOWNAT
 524 _GL_WARN_ON_USE (fchownat, "fchownat is not portable - "
 525                  "use gnulib module openat for portability");
 526 # endif
 527 #endif
 528
 529
 530 #if @GNULIB_FDATASYNC@
 531 /* Synchronize changes to a file.
 532    Return 0 if successful, otherwise -1 and errno set.
 533    See POSIX:2008 specification
 534    <http://pubs.opengroup.org/onlinepubs/9699919799/functions/fdatasync.html>.  */
 535 # if !@HAVE_FDATASYNC@ || !@HAVE_DECL_FDATASYNC@
 536 _GL_FUNCDECL_SYS (fdatasync, int, (int fd));
 537 # endif
 538 _GL_CXXALIAS_SYS (fdatasync, int, (int fd));
 539 _GL_CXXALIASWARN (fdatasync);
 540 #elif defined GNULIB_POSIXCHECK
 541 # undef fdatasync
 542 # if HAVE_RAW_DECL_FDATASYNC
 543 _GL_WARN_ON_USE (fdatasync, "fdatasync is unportable - "
 544                  "use gnulib module fdatasync for portability");
 545 # endif
 546 #endif
 547
 548
 549 #if @GNULIB_FSYNC@
 550 /* Synchronize changes, including metadata, to a file.
 551    Return 0 if successful, otherwise -1 and errno set.
 552    See POSIX:2008 specification
 553    <http://pubs.opengroup.org/onlinepubs/9699919799/functions/fsync.html>.  */
 554 # if !@HAVE_FSYNC@
 555 _GL_FUNCDECL_SYS (fsync, int, (int fd));
 556 # endif
 557 _GL_CXXALIAS_SYS (fsync, int, (int fd));
 558 _GL_CXXALIASWARN (fsync);
 559 #elif defined GNULIB_POSIXCHECK
 560 # undef fsync
 561 # if HAVE_RAW_DECL_FSYNC
 562 _GL_WARN_ON_USE (fsync, "fsync is unportable - "
 563                  "use gnulib module fsync for portability");
 564 # endif
 565 #endif
 566
 567
 568 #if @GNULIB_FTRUNCATE@
 569 /* Change the size of the file to which FD is opened to become equal to LENGTH.
 570    Return 0 if successful, otherwise -1 and errno set.
 571    See the POSIX:2008 specification
 572    <http://pubs.opengroup.org/onlinepubs/9699919799/functions/ftruncate.html>.  */
 573 # if @REPLACE_FTRUNCATE@
 574 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 575 #   undef ftruncate
 576 #   define ftruncate rpl_ftruncate
 577 #  endif
 578 _GL_FUNCDECL_RPL (ftruncate, int, (int fd, off_t length));
 579 _GL_CXXALIAS_RPL (ftruncate, int, (int fd, off_t length));
 580 # else
 581 #  if !@HAVE_FTRUNCATE@
 582 _GL_FUNCDECL_SYS (ftruncate, int, (int fd, off_t length));
 583 #  endif
 584 _GL_CXXALIAS_SYS (ftruncate, int, (int fd, off_t length));
 585 # endif
 586 _GL_CXXALIASWARN (ftruncate);
 587 #elif defined GNULIB_POSIXCHECK
 588 # undef ftruncate
 589 # if HAVE_RAW_DECL_FTRUNCATE
 590 _GL_WARN_ON_USE (ftruncate, "ftruncate is unportable - "
 591                  "use gnulib module ftruncate for portability");
 592 # endif
 593 #endif
 594
 595
 596 #if @GNULIB_GETCWD@
 597 /* Get the name of the current working directory, and put it in SIZE bytes
 598    of BUF.
 599    Return BUF if successful, or NULL if the directory couldn't be determined
 600    or SIZE was too small.
 601    See the POSIX:2008 specification
 602    <http://pubs.opengroup.org/onlinepubs/9699919799/functions/getcwd.html>.
 603    Additionally, the gnulib module 'getcwd' guarantees the following GNU
 604    extension: If BUF is NULL, an array is allocated with 'malloc'; the array
 605    is SIZE bytes long, unless SIZE == 0, in which case it is as big as
 606    necessary.  */
 607 # if @REPLACE_GETCWD@
 608 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 609 #   define getcwd rpl_getcwd
 610 #  endif
 611 _GL_FUNCDECL_RPL (getcwd, char *, (char *buf, size_t size));
 612 _GL_CXXALIAS_RPL (getcwd, char *, (char *buf, size_t size));
 613 # else
 614 /* Need to cast, because on mingw, the second parameter is
 615                                                    int size.  */
 616 _GL_CXXALIAS_SYS_CAST (getcwd, char *, (char *buf, size_t size));
 617 # endif
 618 _GL_CXXALIASWARN (getcwd);
 619 #elif defined GNULIB_POSIXCHECK
 620 # undef getcwd
 621 # if HAVE_RAW_DECL_GETCWD
 622 _GL_WARN_ON_USE (getcwd, "getcwd is unportable - "
 623                  "use gnulib module getcwd for portability");
 624 # endif
 625 #endif
 626
 627
 628 #if @GNULIB_GETDOMAINNAME@
 629 /* Return the NIS domain name of the machine.
 630    WARNING! The NIS domain name is unrelated to the fully qualified host name
 631             of the machine.  It is also unrelated to email addresses.
 632    WARNING! The NIS domain name is usually the empty string or "(none)" when
 633             not using NIS.
 634
 635    Put up to LEN bytes of the NIS domain name into NAME.
 636    Null terminate it if the name is shorter than LEN.
 637    If the NIS domain name is longer than LEN, set errno = EINVAL and return -1.
 638    Return 0 if successful, otherwise set errno and return -1.  */
 639 # if @REPLACE_GETDOMAINNAME@
 640 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 641 #   undef getdomainname
 642 #   define getdomainname rpl_getdomainname
 643 #  endif
 644 _GL_FUNCDECL_RPL (getdomainname, int, (char *name, size_t len)
 645                                       _GL_ARG_NONNULL ((1)));
 646 _GL_CXXALIAS_RPL (getdomainname, int, (char *name, size_t len));
 647 # else
 648 #  if !@HAVE_DECL_GETDOMAINNAME@
 649 _GL_FUNCDECL_SYS (getdomainname, int, (char *name, size_t len)
 650                                       _GL_ARG_NONNULL ((1)));
 651 #  endif
 652 _GL_CXXALIAS_SYS (getdomainname, int, (char *name, size_t len));
 653 # endif
 654 _GL_CXXALIASWARN (getdomainname);
 655 #elif defined GNULIB_POSIXCHECK
 656 # undef getdomainname
 657 # if HAVE_RAW_DECL_GETDOMAINNAME
 658 _GL_WARN_ON_USE (getdomainname, "getdomainname is unportable - "
 659                  "use gnulib module getdomainname for portability");
 660 # endif
 661 #endif
 662
 663
 664 #if @GNULIB_GETDTABLESIZE@
 665 /* Return the maximum number of file descriptors in the current process.
 666    In POSIX, this is same as sysconf (_SC_OPEN_MAX).  */
 667 # if !@HAVE_GETDTABLESIZE@
 668 _GL_FUNCDECL_SYS (getdtablesize, int, (void));
 669 # endif
 670 _GL_CXXALIAS_SYS (getdtablesize, int, (void));
 671 _GL_CXXALIASWARN (getdtablesize);
 672 #elif defined GNULIB_POSIXCHECK
 673 # undef getdtablesize
 674 # if HAVE_RAW_DECL_GETDTABLESIZE
 675 _GL_WARN_ON_USE (getdtablesize, "getdtablesize is unportable - "
 676                  "use gnulib module getdtablesize for portability");
 677 # endif
 678 #endif
 679
 680
 681 #if @GNULIB_GETGROUPS@
 682 /* Return the supplemental groups that the current process belongs to.
 683    It is unspecified whether the effective group id is in the list.
 684    If N is 0, return the group count; otherwise, N describes how many
 685    entries are available in GROUPS.  Return -1 and set errno if N is
 686    not 0 and not large enough.  Fails with ENOSYS on some systems.  */
 687 # if @REPLACE_GETGROUPS@
 688 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 689 #   undef getgroups
 690 #   define getgroups rpl_getgroups
 691 #  endif
 692 _GL_FUNCDECL_RPL (getgroups, int, (int n, gid_t *groups));
 693 _GL_CXXALIAS_RPL (getgroups, int, (int n, gid_t *groups));
 694 # else
 695 #  if !@HAVE_GETGROUPS@
 696 _GL_FUNCDECL_SYS (getgroups, int, (int n, gid_t *groups));
 697 #  endif
 698 _GL_CXXALIAS_SYS (getgroups, int, (int n, gid_t *groups));
 699 # endif
 700 _GL_CXXALIASWARN (getgroups);
 701 #elif defined GNULIB_POSIXCHECK
 702 # undef getgroups
 703 # if HAVE_RAW_DECL_GETGROUPS
 704 _GL_WARN_ON_USE (getgroups, "getgroups is unportable - "
 705                  "use gnulib module getgroups for portability");
 706 # endif
 707 #endif
 708
 709
 710 #if @GNULIB_GETHOSTNAME@
 711 /* Return the standard host name of the machine.
 712    WARNING! The host name may or may not be fully qualified.
 713
 714    Put up to LEN bytes of the host name into NAME.
 715    Null terminate it if the name is shorter than LEN.
 716    If the host name is longer than LEN, set errno = EINVAL and return -1.
 717    Return 0 if successful, otherwise set errno and return -1.  */
 718 # if @UNISTD_H_HAVE_WINSOCK2_H@
 719 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 720 #   undef gethostname
 721 #   define gethostname rpl_gethostname
 722 #  endif
 723 _GL_FUNCDECL_RPL (gethostname, int, (char *name, size_t len)
 724                                     _GL_ARG_NONNULL ((1)));
 725 _GL_CXXALIAS_RPL (gethostname, int, (char *name, size_t len));
 726 # else
 727 #  if !@HAVE_GETHOSTNAME@
 728 _GL_FUNCDECL_SYS (gethostname, int, (char *name, size_t len)
 729                                     _GL_ARG_NONNULL ((1)));
 730 #  endif
 731 /* Need to cast, because on Solaris 10 and OSF/1 5.1 systems, the second
 732    parameter is
 733                                                       int len.  */
 734 _GL_CXXALIAS_SYS_CAST (gethostname, int, (char *name, size_t len));
 735 # endif
 736 _GL_CXXALIASWARN (gethostname);
 737 #elif @UNISTD_H_HAVE_WINSOCK2_H@
 738 # undef gethostname
 739 # define gethostname gethostname_used_without_requesting_gnulib_module_gethostname
 740 #elif defined GNULIB_POSIXCHECK
 741 # undef gethostname
 742 # if HAVE_RAW_DECL_GETHOSTNAME
 743 _GL_WARN_ON_USE (gethostname, "gethostname is unportable - "
 744                  "use gnulib module gethostname for portability");
 745 # endif
 746 #endif
 747
 748
 749 #if @GNULIB_GETLOGIN@
 750 /* Returns the user's login name, or NULL if it cannot be found.  Upon error,
 751    returns NULL with errno set.
 752
 753    See <http://www.opengroup.org/susv3xsh/getlogin.html>.
 754
 755    Most programs don't need to use this function, because the information is
 756    available through environment variables:
 757      ${LOGNAME-$USER}        on Unix platforms,
 758      $USERNAME               on native Windows platforms.
 759  */
 760 # if !@HAVE_GETLOGIN@
 761 _GL_FUNCDECL_SYS (getlogin, char *, (void));
 762 # endif
 763 _GL_CXXALIAS_SYS (getlogin, char *, (void));
 764 _GL_CXXALIASWARN (getlogin);
 765 #elif defined GNULIB_POSIXCHECK
 766 # undef getlogin
 767 # if HAVE_RAW_DECL_GETLOGIN
 768 _GL_WARN_ON_USE (getlogin, "getlogin is unportable - "
 769                  "use gnulib module getlogin for portability");
 770 # endif
 771 #endif
 772
 773
 774 #if @GNULIB_GETLOGIN_R@
 775 /* Copies the user's login name to NAME.
 776    The array pointed to by NAME has room for SIZE bytes.
 777
 778    Returns 0 if successful.  Upon error, an error number is returned, or -1 in
 779    the case that the login name cannot be found but no specific error is
 780    provided (this case is hopefully rare but is left open by the POSIX spec).
 781
 782    See <http://www.opengroup.org/susv3xsh/getlogin.html>.
 783
 784    Most programs don't need to use this function, because the information is
 785    available through environment variables:
 786      ${LOGNAME-$USER}        on Unix platforms,
 787      $USERNAME               on native Windows platforms.
 788  */
 789 # if @REPLACE_GETLOGIN_R@
 790 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 791 #   define getlogin_r rpl_getlogin_r
 792 #  endif
 793 _GL_FUNCDECL_RPL (getlogin_r, int, (char *name, size_t size)
 794                                    _GL_ARG_NONNULL ((1)));
 795 _GL_CXXALIAS_RPL (getlogin_r, int, (char *name, size_t size));
 796 # else
 797 #  if !@HAVE_DECL_GETLOGIN_R@
 798 _GL_FUNCDECL_SYS (getlogin_r, int, (char *name, size_t size)
 799                                    _GL_ARG_NONNULL ((1)));
 800 #  endif
 801 /* Need to cast, because on Solaris 10 systems, the second argument is
 802                                                      int size.  */
 803 _GL_CXXALIAS_SYS_CAST (getlogin_r, int, (char *name, size_t size));
 804 # endif
 805 _GL_CXXALIASWARN (getlogin_r);
 806 #elif defined GNULIB_POSIXCHECK
 807 # undef getlogin_r
 808 # if HAVE_RAW_DECL_GETLOGIN_R
 809 _GL_WARN_ON_USE (getlogin_r, "getlogin_r is unportable - "
 810                  "use gnulib module getlogin_r for portability");
 811 # endif
 812 #endif
 813
 814
 815 #if @GNULIB_GETPAGESIZE@
 816 # if @REPLACE_GETPAGESIZE@
 817 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 818 #   define getpagesize rpl_getpagesize
 819 #  endif
 820 _GL_FUNCDECL_RPL (getpagesize, int, (void));
 821 _GL_CXXALIAS_RPL (getpagesize, int, (void));
 822 # else
 823 #  if !@HAVE_GETPAGESIZE@
 824 #   if !defined getpagesize
 825 /* This is for POSIX systems.  */
 826 #    if !defined _gl_getpagesize && defined _SC_PAGESIZE
 827 #     if ! (defined __VMS && __VMS_VER < 70000000)
 828 #      define _gl_getpagesize() sysconf (_SC_PAGESIZE)
 829 #     endif
 830 #    endif
 831 /* This is for older VMS.  */
 832 #    if !defined _gl_getpagesize && defined __VMS
 833 #     ifdef __ALPHA
 834 #      define _gl_getpagesize() 8192
 835 #     else
 836 #      define _gl_getpagesize() 512
 837 #     endif
 838 #    endif
 839 /* This is for BeOS.  */
 840 #    if !defined _gl_getpagesize && @HAVE_OS_H@
 841 #     include <OS.h>
 842 #     if defined B_PAGE_SIZE
 843 #      define _gl_getpagesize() B_PAGE_SIZE
 844 #     endif
 845 #    endif
 846 /* This is for AmigaOS4.0.  */
 847 #    if !defined _gl_getpagesize && defined __amigaos4__
 848 #     define _gl_getpagesize() 2048
 849 #    endif
 850 /* This is for older Unix systems.  */
 851 #    if !defined _gl_getpagesize && @HAVE_SYS_PARAM_H@
 852 #     include <sys/param.h>
 853 #     ifdef EXEC_PAGESIZE
 854 #      define _gl_getpagesize() EXEC_PAGESIZE
 855 #     else
 856 #      ifdef NBPG
 857 #       ifndef CLSIZE
 858 #        define CLSIZE 1
 859 #       endif
 860 #       define _gl_getpagesize() (NBPG * CLSIZE)
 861 #      else
 862 #       ifdef NBPC
 863 #        define _gl_getpagesize() NBPC
 864 #       endif
 865 #      endif
 866 #     endif
 867 #    endif
 868 #    if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 869 #     define getpagesize() _gl_getpagesize ()
 870 #    else
 871 #     if !GNULIB_defined_getpagesize_function
 872 _GL_UNISTD_INLINE int
 873 getpagesize ()
 874 {
 875   return _gl_getpagesize ();
 876 }
 877 #      define GNULIB_defined_getpagesize_function 1
 878 #     endif
 879 #    endif
 880 #   endif
 881 #  endif
 882 /* Need to cast, because on Cygwin 1.5.x systems, the return type is size_t.  */
 883 _GL_CXXALIAS_SYS_CAST (getpagesize, int, (void));
 884 # endif
 885 # if @HAVE_DECL_GETPAGESIZE@
 886 _GL_CXXALIASWARN (getpagesize);
 887 # endif
 888 #elif defined GNULIB_POSIXCHECK
 889 # undef getpagesize
 890 # if HAVE_RAW_DECL_GETPAGESIZE
 891 _GL_WARN_ON_USE (getpagesize, "getpagesize is unportable - "
 892                  "use gnulib module getpagesize for portability");
 893 # endif
 894 #endif
 895
 896
 897 #if @GNULIB_GETUSERSHELL@
 898 /* Return the next valid login shell on the system, or NULL when the end of
 899    the list has been reached.  */
 900 # if !@HAVE_DECL_GETUSERSHELL@
 901 _GL_FUNCDECL_SYS (getusershell, char *, (void));
 902 # endif
 903 _GL_CXXALIAS_SYS (getusershell, char *, (void));
 904 _GL_CXXALIASWARN (getusershell);
 905 #elif defined GNULIB_POSIXCHECK
 906 # undef getusershell
 907 # if HAVE_RAW_DECL_GETUSERSHELL
 908 _GL_WARN_ON_USE (getusershell, "getusershell is unportable - "
 909                  "use gnulib module getusershell for portability");
 910 # endif
 911 #endif
 912
 913 #if @GNULIB_GETUSERSHELL@
 914 /* Rewind to pointer that is advanced at each getusershell() call.  */
 915 # if !@HAVE_DECL_GETUSERSHELL@
 916 _GL_FUNCDECL_SYS (setusershell, void, (void));
 917 # endif
 918 _GL_CXXALIAS_SYS (setusershell, void, (void));
 919 _GL_CXXALIASWARN (setusershell);
 920 #elif defined GNULIB_POSIXCHECK
 921 # undef setusershell
 922 # if HAVE_RAW_DECL_SETUSERSHELL
 923 _GL_WARN_ON_USE (setusershell, "setusershell is unportable - "
 924                  "use gnulib module getusershell for portability");
 925 # endif
 926 #endif
 927
 928 #if @GNULIB_GETUSERSHELL@
 929 /* Free the pointer that is advanced at each getusershell() call and
 930    associated resources.  */
 931 # if !@HAVE_DECL_GETUSERSHELL@
 932 _GL_FUNCDECL_SYS (endusershell, void, (void));
 933 # endif
 934 _GL_CXXALIAS_SYS (endusershell, void, (void));
 935 _GL_CXXALIASWARN (endusershell);
 936 #elif defined GNULIB_POSIXCHECK
 937 # undef endusershell
 938 # if HAVE_RAW_DECL_ENDUSERSHELL
 939 _GL_WARN_ON_USE (endusershell, "endusershell is unportable - "
 940                  "use gnulib module getusershell for portability");
 941 # endif
 942 #endif
 943
 944
 945 #if @GNULIB_GROUP_MEMBER@
 946 /* Determine whether group id is in calling user's group list.  */
 947 # if !@HAVE_GROUP_MEMBER@
 948 _GL_FUNCDECL_SYS (group_member, int, (gid_t gid));
 949 # endif
 950 _GL_CXXALIAS_SYS (group_member, int, (gid_t gid));
 951 _GL_CXXALIASWARN (group_member);
 952 #elif defined GNULIB_POSIXCHECK
 953 # undef group_member
 954 # if HAVE_RAW_DECL_GROUP_MEMBER
 955 _GL_WARN_ON_USE (group_member, "group_member is unportable - "
 956                  "use gnulib module group-member for portability");
 957 # endif
 958 #endif
 959
 960
 961 #if @GNULIB_ISATTY@
 962 # if @REPLACE_ISATTY@
 963 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 964 #   undef isatty
 965 #   define isatty rpl_isatty
 966 #  endif
 967 _GL_FUNCDECL_RPL (isatty, int, (int fd));
 968 _GL_CXXALIAS_RPL (isatty, int, (int fd));
 969 # else
 970 _GL_CXXALIAS_SYS (isatty, int, (int fd));
 971 # endif
 972 _GL_CXXALIASWARN (isatty);
 973 #elif defined GNULIB_POSIXCHECK
 974 # undef isatty
 975 # if HAVE_RAW_DECL_ISATTY
 976 _GL_WARN_ON_USE (isatty, "isatty has portability problems on native Windows - "
 977                  "use gnulib module isatty for portability");
 978 # endif
 979 #endif
 980
 981
 982 #if @GNULIB_LCHOWN@
 983 /* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
 984    to GID (if GID is not -1).  Do not follow symbolic links.
 985    Return 0 if successful, otherwise -1 and errno set.
 986    See the POSIX:2008 specification
 987    <http://pubs.opengroup.org/onlinepubs/9699919799/functions/lchown.html>.  */
 988 # if @REPLACE_LCHOWN@
 989 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 990 #   undef lchown
 991 #   define lchown rpl_lchown
 992 #  endif
 993 _GL_FUNCDECL_RPL (lchown, int, (char const *file, uid_t owner, gid_t group)
 994                                _GL_ARG_NONNULL ((1)));
 995 _GL_CXXALIAS_RPL (lchown, int, (char const *file, uid_t owner, gid_t group));
 996 # else
 997 #  if !@HAVE_LCHOWN@
 998 _GL_FUNCDECL_SYS (lchown, int, (char const *file, uid_t owner, gid_t group)
 999                                _GL_ARG_NONNULL ((1)));
1000 #  endif
1001 _GL_CXXALIAS_SYS (lchown, int, (char const *file, uid_t owner, gid_t group));
1002 # endif
1003 _GL_CXXALIASWARN (lchown);
1004 #elif defined GNULIB_POSIXCHECK
1005 # undef lchown
1006 # if HAVE_RAW_DECL_LCHOWN
1007 _GL_WARN_ON_USE (lchown, "lchown is unportable to pre-POSIX.1-2001 systems - "
1008                  "use gnulib module lchown for portability");
1009 # endif
1010 #endif
1011
1012
1013 #if @GNULIB_LINK@
1014 /* Create a new hard link for an existing file.
1015    Return 0 if successful, otherwise -1 and errno set.
1016    See POSIX:2008 specification
1017    <http://pubs.opengroup.org/onlinepubs/9699919799/functions/link.html>.  */
1018 # if @REPLACE_LINK@
1019 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1020 #   define link rpl_link
1021 #  endif
1022 _GL_FUNCDECL_RPL (link, int, (const char *path1, const char *path2)
1023                              _GL_ARG_NONNULL ((1, 2)));
1024 _GL_CXXALIAS_RPL (link, int, (const char *path1, const char *path2));
1025 # else
1026 #  if !@HAVE_LINK@
1027 _GL_FUNCDECL_SYS (link, int, (const char *path1, const char *path2)
1028                              _GL_ARG_NONNULL ((1, 2)));
1029 #  endif
1030 _GL_CXXALIAS_SYS (link, int, (const char *path1, const char *path2));
1031 # endif
1032 _GL_CXXALIASWARN (link);
1033 #elif defined GNULIB_POSIXCHECK
1034 # undef link
1035 # if HAVE_RAW_DECL_LINK
1036 _GL_WARN_ON_USE (link, "link is unportable - "
1037                  "use gnulib module link for portability");
1038 # endif
1039 #endif
1040
1041
1042 #if @GNULIB_LINKAT@
1043 /* Create a new hard link for an existing file, relative to two
1044    directories.  FLAG controls whether symlinks are followed.
1045    Return 0 if successful, otherwise -1 and errno set.  */
1046 # if @REPLACE_LINKAT@
1047 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1048 #   undef linkat
1049 #   define linkat rpl_linkat
1050 #  endif
1051 _GL_FUNCDECL_RPL (linkat, int,
1052                   (int fd1, const char *path1, int fd2, const char *path2,
1053                    int flag)
1054                   _GL_ARG_NONNULL ((2, 4)));
1055 _GL_CXXALIAS_RPL (linkat, int,
1056                   (int fd1, const char *path1, int fd2, const char *path2,
1057                    int flag));
1058 # else
1059 #  if !@HAVE_LINKAT@
1060 _GL_FUNCDECL_SYS (linkat, int,
1061                   (int fd1, const char *path1, int fd2, const char *path2,
1062                    int flag)
1063                   _GL_ARG_NONNULL ((2, 4)));
1064 #  endif
1065 _GL_CXXALIAS_SYS (linkat, int,
1066                   (int fd1, const char *path1, int fd2, const char *path2,
1067                    int flag));
1068 # endif
1069 _GL_CXXALIASWARN (linkat);
1070 #elif defined GNULIB_POSIXCHECK
1071 # undef linkat
1072 # if HAVE_RAW_DECL_LINKAT
1073 _GL_WARN_ON_USE (linkat, "linkat is unportable - "
1074                  "use gnulib module linkat for portability");
1075 # endif
1076 #endif
1077
1078
1079 #if @GNULIB_LSEEK@
1080 /* Set the offset of FD relative to SEEK_SET, SEEK_CUR, or SEEK_END.
1081    Return the new offset if successful, otherwise -1 and errno set.
1082    See the POSIX:2008 specification
1083    <http://pubs.opengroup.org/onlinepubs/9699919799/functions/lseek.html>.  */
1084 # if @REPLACE_LSEEK@
1085 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1086 #   define lseek rpl_lseek
1087 #  endif
1088 _GL_FUNCDECL_RPL (lseek, off_t, (int fd, off_t offset, int whence));
1089 _GL_CXXALIAS_RPL (lseek, off_t, (int fd, off_t offset, int whence));
1090 # else
1091 _GL_CXXALIAS_SYS (lseek, off_t, (int fd, off_t offset, int whence));
1092 # endif
1093 _GL_CXXALIASWARN (lseek);
1094 #elif defined GNULIB_POSIXCHECK
1095 # undef lseek
1096 # if HAVE_RAW_DECL_LSEEK
1097 _GL_WARN_ON_USE (lseek, "lseek does not fail with ESPIPE on pipes on some "
1098                  "systems - use gnulib module lseek for portability");
1099 # endif
1100 #endif
1101
1102
1103 #if @GNULIB_PIPE@
1104 /* Create a pipe, defaulting to O_BINARY mode.
1105    Store the read-end as fd[0] and the write-end as fd[1].
1106    Return 0 upon success, or -1 with errno set upon failure.  */
1107 # if !@HAVE_PIPE@
1108 _GL_FUNCDECL_SYS (pipe, int, (int fd[2]) _GL_ARG_NONNULL ((1)));
1109 # endif
1110 _GL_CXXALIAS_SYS (pipe, int, (int fd[2]));
1111 _GL_CXXALIASWARN (pipe);
1112 #elif defined GNULIB_POSIXCHECK
1113 # undef pipe
1114 # if HAVE_RAW_DECL_PIPE
1115 _GL_WARN_ON_USE (pipe, "pipe is unportable - "
1116                  "use gnulib module pipe-posix for portability");
1117 # endif
1118 #endif
1119
1120
1121 #if @GNULIB_PIPE2@
1122 /* Create a pipe, applying the given flags when opening the read-end of the
1123    pipe and the write-end of the pipe.
1124    The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
1125    and O_TEXT, O_BINARY (defined in "binary-io.h").
1126    Store the read-end as fd[0] and the write-end as fd[1].
1127    Return 0 upon success, or -1 with errno set upon failure.
1128    See also the Linux man page at
1129    <http://www.kernel.org/doc/man-pages/online/pages/man2/pipe2.2.html>.  */
1130 # if @HAVE_PIPE2@
1131 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1132 #   define pipe2 rpl_pipe2
1133 #  endif
1134 _GL_FUNCDECL_RPL (pipe2, int, (int fd[2], int flags) _GL_ARG_NONNULL ((1)));
1135 _GL_CXXALIAS_RPL (pipe2, int, (int fd[2], int flags));
1136 # else
1137 _GL_FUNCDECL_SYS (pipe2, int, (int fd[2], int flags) _GL_ARG_NONNULL ((1)));
1138 _GL_CXXALIAS_SYS (pipe2, int, (int fd[2], int flags));
1139 # endif
1140 _GL_CXXALIASWARN (pipe2);
1141 #elif defined GNULIB_POSIXCHECK
1142 # undef pipe2
1143 # if HAVE_RAW_DECL_PIPE2
1144 _GL_WARN_ON_USE (pipe2, "pipe2 is unportable - "
1145                  "use gnulib module pipe2 for portability");
1146 # endif
1147 #endif
1148
1149
1150 #if @GNULIB_PREAD@
1151 /* Read at most BUFSIZE bytes from FD into BUF, starting at OFFSET.
1152    Return the number of bytes placed into BUF if successful, otherwise
1153    set errno and return -1.  0 indicates EOF.
1154    See the POSIX:2008 specification
1155    <http://pubs.opengroup.org/onlinepubs/9699919799/functions/pread.html>.  */
1156 # if @REPLACE_PREAD@
1157 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1158 #   undef pread
1159 #   define pread rpl_pread
1160 #  endif
1161 _GL_FUNCDECL_RPL (pread, ssize_t,
1162                   (int fd, void *buf, size_t bufsize, off_t offset)
1163                   _GL_ARG_NONNULL ((2)));
1164 _GL_CXXALIAS_RPL (pread, ssize_t,
1165                   (int fd, void *buf, size_t bufsize, off_t offset));
1166 # else
1167 #  if !@HAVE_PREAD@
1168 _GL_FUNCDECL_SYS (pread, ssize_t,
1169                   (int fd, void *buf, size_t bufsize, off_t offset)
1170                   _GL_ARG_NONNULL ((2)));
1171 #  endif
1172 _GL_CXXALIAS_SYS (pread, ssize_t,
1173                   (int fd, void *buf, size_t bufsize, off_t offset));
1174 # endif
1175 _GL_CXXALIASWARN (pread);
1176 #elif defined GNULIB_POSIXCHECK
1177 # undef pread
1178 # if HAVE_RAW_DECL_PREAD
1179 _GL_WARN_ON_USE (pread, "pread is unportable - "
1180                  "use gnulib module pread for portability");
1181 # endif
1182 #endif
1183
1184
1185 #if @GNULIB_PWRITE@
1186 /* Write at most BUFSIZE bytes from BUF into FD, starting at OFFSET.
1187    Return the number of bytes written if successful, otherwise
1188    set errno and return -1.  0 indicates nothing written.  See the
1189    POSIX:2008 specification
1190    <http://pubs.opengroup.org/onlinepubs/9699919799/functions/pwrite.html>.  */
1191 # if @REPLACE_PWRITE@
1192 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1193 #   undef pwrite
1194 #   define pwrite rpl_pwrite
1195 #  endif
1196 _GL_FUNCDECL_RPL (pwrite, ssize_t,
1197                   (int fd, const void *buf, size_t bufsize, off_t offset)
1198                   _GL_ARG_NONNULL ((2)));
1199 _GL_CXXALIAS_RPL (pwrite, ssize_t,
1200                   (int fd, const void *buf, size_t bufsize, off_t offset));
1201 # else
1202 #  if !@HAVE_PWRITE@
1203 _GL_FUNCDECL_SYS (pwrite, ssize_t,
1204                   (int fd, const void *buf, size_t bufsize, off_t offset)
1205                   _GL_ARG_NONNULL ((2)));
1206 #  endif
1207 _GL_CXXALIAS_SYS (pwrite, ssize_t,
1208                   (int fd, const void *buf, size_t bufsize, off_t offset));
1209 # endif
1210 _GL_CXXALIASWARN (pwrite);
1211 #elif defined GNULIB_POSIXCHECK
1212 # undef pwrite
1213 # if HAVE_RAW_DECL_PWRITE
1214 _GL_WARN_ON_USE (pwrite, "pwrite is unportable - "
1215                  "use gnulib module pwrite for portability");
1216 # endif
1217 #endif
1218
1219
1220 #if @GNULIB_READ@
1221 /* Read up to COUNT bytes from file descriptor FD into the buffer starting
1222    at BUF.  See the POSIX:2008 specification
1223    <http://pubs.opengroup.org/onlinepubs/9699919799/functions/read.html>.  */
1224 # if @REPLACE_READ@
1225 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1226 #   undef read
1227 #   define read rpl_read
1228 #  endif
1229 _GL_FUNCDECL_RPL (read, ssize_t, (int fd, void *buf, size_t count)
1230                                  _GL_ARG_NONNULL ((2)));
1231 _GL_CXXALIAS_RPL (read, ssize_t, (int fd, void *buf, size_t count));
1232 # else
1233 /* Need to cast, because on mingw, the third parameter is
1234                                                           unsigned int count
1235    and the return type is 'int'.  */
1236 _GL_CXXALIAS_SYS_CAST (read, ssize_t, (int fd, void *buf, size_t count));
1237 # endif
1238 _GL_CXXALIASWARN (read);
1239 #endif
1240
1241
1242 #if @GNULIB_READLINK@
1243 /* Read the contents of the symbolic link FILE and place the first BUFSIZE
1244    bytes of it into BUF.  Return the number of bytes placed into BUF if
1245    successful, otherwise -1 and errno set.
1246    See the POSIX:2008 specification
1247    <http://pubs.opengroup.org/onlinepubs/9699919799/functions/readlink.html>.  */
1248 # if @REPLACE_READLINK@
1249 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1250 #   define readlink rpl_readlink
1251 #  endif
1252 _GL_FUNCDECL_RPL (readlink, ssize_t,
1253                   (const char *file, char *buf, size_t bufsize)
1254                   _GL_ARG_NONNULL ((1, 2)));
1255 _GL_CXXALIAS_RPL (readlink, ssize_t,
1256                   (const char *file, char *buf, size_t bufsize));
1257 # else
1258 #  if !@HAVE_READLINK@
1259 _GL_FUNCDECL_SYS (readlink, ssize_t,
1260                   (const char *file, char *buf, size_t bufsize)
1261                   _GL_ARG_NONNULL ((1, 2)));
1262 #  endif
1263 _GL_CXXALIAS_SYS (readlink, ssize_t,
1264                   (const char *file, char *buf, size_t bufsize));
1265 # endif
1266 _GL_CXXALIASWARN (readlink);
1267 #elif defined GNULIB_POSIXCHECK
1268 # undef readlink
1269 # if HAVE_RAW_DECL_READLINK
1270 _GL_WARN_ON_USE (readlink, "readlink is unportable - "
1271                  "use gnulib module readlink for portability");
1272 # endif
1273 #endif
1274
1275
1276 #if @GNULIB_READLINKAT@
1277 # if !@HAVE_READLINKAT@
1278 _GL_FUNCDECL_SYS (readlinkat, ssize_t,
1279                   (int fd, char const *file, char *buf, size_t len)
1280                   _GL_ARG_NONNULL ((2, 3)));
1281 # endif
1282 _GL_CXXALIAS_SYS (readlinkat, ssize_t,
1283                   (int fd, char const *file, char *buf, size_t len));
1284 _GL_CXXALIASWARN (readlinkat);
1285 #elif defined GNULIB_POSIXCHECK
1286 # undef readlinkat
1287 # if HAVE_RAW_DECL_READLINKAT
1288 _GL_WARN_ON_USE (readlinkat, "readlinkat is not portable - "
1289                  "use gnulib module readlinkat for portability");
1290 # endif
1291 #endif
1292
1293
1294 #if @GNULIB_RMDIR@
1295 /* Remove the directory DIR.  */
1296 # if @REPLACE_RMDIR@
1297 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1298 #   define rmdir rpl_rmdir
1299 #  endif
1300 _GL_FUNCDECL_RPL (rmdir, int, (char const *name) _GL_ARG_NONNULL ((1)));
1301 _GL_CXXALIAS_RPL (rmdir, int, (char const *name));
1302 # else
1303 _GL_CXXALIAS_SYS (rmdir, int, (char const *name));
1304 # endif
1305 _GL_CXXALIASWARN (rmdir);
1306 #elif defined GNULIB_POSIXCHECK
1307 # undef rmdir
1308 # if HAVE_RAW_DECL_RMDIR
1309 _GL_WARN_ON_USE (rmdir, "rmdir is unportable - "
1310                  "use gnulib module rmdir for portability");
1311 # endif
1312 #endif
1313
1314
1315 #if @GNULIB_SETHOSTNAME@
1316 /* Set the host name of the machine.
1317    The host name may or may not be fully qualified.
1318
1319    Put LEN bytes of NAME into the host name.
1320    Return 0 if successful, otherwise, set errno and return -1.
1321
1322    Platforms with no ability to set the hostname return -1 and set
1323    errno = ENOSYS.  */
1324 # if !@HAVE_SETHOSTNAME@ || !@HAVE_DECL_SETHOSTNAME@
1325 _GL_FUNCDECL_SYS (sethostname, int, (const char *name, size_t len)
1326                                     _GL_ARG_NONNULL ((1)));
1327 # endif
1328 /* Need to cast, because on Solaris 11 2011-10, Mac OS X 10.5, IRIX 6.5
1329    and FreeBSD 6.4 the second parameter is int.  On Solaris 11
1330    2011-10, the first parameter is not const.  */
1331 _GL_CXXALIAS_SYS_CAST (sethostname, int, (const char *name, size_t len));
1332 _GL_CXXALIASWARN (sethostname);
1333 #elif defined GNULIB_POSIXCHECK
1334 # undef sethostname
1335 # if HAVE_RAW_DECL_SETHOSTNAME
1336 _GL_WARN_ON_USE (sethostname, "sethostname is unportable - "
1337                  "use gnulib module sethostname for portability");
1338 # endif
1339 #endif
1340
1341
1342 #if @GNULIB_SLEEP@
1343 /* Pause the execution of the current thread for N seconds.
1344    Returns the number of seconds left to sleep.
1345    See the POSIX:2008 specification
1346    <http://pubs.opengroup.org/onlinepubs/9699919799/functions/sleep.html>.  */
1347 # if @REPLACE_SLEEP@
1348 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1349 #   undef sleep
1350 #   define sleep rpl_sleep
1351 #  endif
1352 _GL_FUNCDECL_RPL (sleep, unsigned int, (unsigned int n));
1353 _GL_CXXALIAS_RPL (sleep, unsigned int, (unsigned int n));
1354 # else
1355 #  if !@HAVE_SLEEP@
1356 _GL_FUNCDECL_SYS (sleep, unsigned int, (unsigned int n));
1357 #  endif
1358 _GL_CXXALIAS_SYS (sleep, unsigned int, (unsigned int n));
1359 # endif
1360 _GL_CXXALIASWARN (sleep);
1361 #elif defined GNULIB_POSIXCHECK
1362 # undef sleep
1363 # if HAVE_RAW_DECL_SLEEP
1364 _GL_WARN_ON_USE (sleep, "sleep is unportable - "
1365                  "use gnulib module sleep for portability");
1366 # endif
1367 #endif
1368
1369
1370 #if @GNULIB_SYMLINK@
1371 # if @REPLACE_SYMLINK@
1372 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1373 #   undef symlink
1374 #   define symlink rpl_symlink
1375 #  endif
1376 _GL_FUNCDECL_RPL (symlink, int, (char const *contents, char const *file)
1377                                 _GL_ARG_NONNULL ((1, 2)));
1378 _GL_CXXALIAS_RPL (symlink, int, (char const *contents, char const *file));
1379 # else
1380 #  if !@HAVE_SYMLINK@
1381 _GL_FUNCDECL_SYS (symlink, int, (char const *contents, char const *file)
1382                                 _GL_ARG_NONNULL ((1, 2)));
1383 #  endif
1384 _GL_CXXALIAS_SYS (symlink, int, (char const *contents, char const *file));
1385 # endif
1386 _GL_CXXALIASWARN (symlink);
1387 #elif defined GNULIB_POSIXCHECK
1388 # undef symlink
1389 # if HAVE_RAW_DECL_SYMLINK
1390 _GL_WARN_ON_USE (symlink, "symlink is not portable - "
1391                  "use gnulib module symlink for portability");
1392 # endif
1393 #endif
1394
1395
1396 #if @GNULIB_SYMLINKAT@
1397 # if !@HAVE_SYMLINKAT@
1398 _GL_FUNCDECL_SYS (symlinkat, int,
1399                   (char const *contents, int fd, char const *file)
1400                   _GL_ARG_NONNULL ((1, 3)));
1401 # endif
1402 _GL_CXXALIAS_SYS (symlinkat, int,
1403                   (char const *contents, int fd, char const *file));
1404 _GL_CXXALIASWARN (symlinkat);
1405 #elif defined GNULIB_POSIXCHECK
1406 # undef symlinkat
1407 # if HAVE_RAW_DECL_SYMLINKAT
1408 _GL_WARN_ON_USE (symlinkat, "symlinkat is not portable - "
1409                  "use gnulib module symlinkat for portability");
1410 # endif
1411 #endif
1412
1413
1414 #if @GNULIB_TTYNAME_R@
1415 /* Store at most BUFLEN characters of the pathname of the terminal FD is
1416    open on in BUF.  Return 0 on success, otherwise an error number.  */
1417 # if @REPLACE_TTYNAME_R@
1418 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1419 #   undef ttyname_r
1420 #   define ttyname_r rpl_ttyname_r
1421 #  endif
1422 _GL_FUNCDECL_RPL (ttyname_r, int,
1423                   (int fd, char *buf, size_t buflen) _GL_ARG_NONNULL ((2)));
1424 _GL_CXXALIAS_RPL (ttyname_r, int,
1425                   (int fd, char *buf, size_t buflen));
1426 # else
1427 #  if !@HAVE_DECL_TTYNAME_R@
1428 _GL_FUNCDECL_SYS (ttyname_r, int,
1429                   (int fd, char *buf, size_t buflen) _GL_ARG_NONNULL ((2)));
1430 #  endif
1431 _GL_CXXALIAS_SYS (ttyname_r, int,
1432                   (int fd, char *buf, size_t buflen));
1433 # endif
1434 _GL_CXXALIASWARN (ttyname_r);
1435 #elif defined GNULIB_POSIXCHECK
1436 # undef ttyname_r
1437 # if HAVE_RAW_DECL_TTYNAME_R
1438 _GL_WARN_ON_USE (ttyname_r, "ttyname_r is not portable - "
1439                  "use gnulib module ttyname_r for portability");
1440 # endif
1441 #endif
1442
1443
1444 #if @GNULIB_UNLINK@
1445 # if @REPLACE_UNLINK@
1446 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1447 #   undef unlink
1448 #   define unlink rpl_unlink
1449 #  endif
1450 _GL_FUNCDECL_RPL (unlink, int, (char const *file) _GL_ARG_NONNULL ((1)));
1451 _GL_CXXALIAS_RPL (unlink, int, (char const *file));
1452 # else
1453 _GL_CXXALIAS_SYS (unlink, int, (char const *file));
1454 # endif
1455 _GL_CXXALIASWARN (unlink);
1456 #elif defined GNULIB_POSIXCHECK
1457 # undef unlink
1458 # if HAVE_RAW_DECL_UNLINK
1459 _GL_WARN_ON_USE (unlink, "unlink is not portable - "
1460                  "use gnulib module unlink for portability");
1461 # endif
1462 #endif
1463
1464
1465 #if @GNULIB_UNLINKAT@
1466 # if @REPLACE_UNLINKAT@
1467 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1468 #   undef unlinkat
1469 #   define unlinkat rpl_unlinkat
1470 #  endif
1471 _GL_FUNCDECL_RPL (unlinkat, int, (int fd, char const *file, int flag)
1472                                  _GL_ARG_NONNULL ((2)));
1473 _GL_CXXALIAS_RPL (unlinkat, int, (int fd, char const *file, int flag));
1474 # else
1475 #  if !@HAVE_UNLINKAT@
1476 _GL_FUNCDECL_SYS (unlinkat, int, (int fd, char const *file, int flag)
1477                                  _GL_ARG_NONNULL ((2)));
1478 #  endif
1479 _GL_CXXALIAS_SYS (unlinkat, int, (int fd, char const *file, int flag));
1480 # endif
1481 _GL_CXXALIASWARN (unlinkat);
1482 #elif defined GNULIB_POSIXCHECK
1483 # undef unlinkat
1484 # if HAVE_RAW_DECL_UNLINKAT
1485 _GL_WARN_ON_USE (unlinkat, "unlinkat is not portable - "
1486                  "use gnulib module openat for portability");
1487 # endif
1488 #endif
1489
1490
1491 #if @GNULIB_USLEEP@
1492 /* Pause the execution of the current thread for N microseconds.
1493    Returns 0 on completion, or -1 on range error.
1494    See the POSIX:2001 specification
1495    <http://www.opengroup.org/susv3xsh/usleep.html>.  */
1496 # if @REPLACE_USLEEP@
1497 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1498 #   undef usleep
1499 #   define usleep rpl_usleep
1500 #  endif
1501 _GL_FUNCDECL_RPL (usleep, int, (useconds_t n));
1502 _GL_CXXALIAS_RPL (usleep, int, (useconds_t n));
1503 # else
1504 #  if !@HAVE_USLEEP@
1505 _GL_FUNCDECL_SYS (usleep, int, (useconds_t n));
1506 #  endif
1507 _GL_CXXALIAS_SYS (usleep, int, (useconds_t n));
1508 # endif
1509 _GL_CXXALIASWARN (usleep);
1510 #elif defined GNULIB_POSIXCHECK
1511 # undef usleep
1512 # if HAVE_RAW_DECL_USLEEP
1513 _GL_WARN_ON_USE (usleep, "usleep is unportable - "
1514                  "use gnulib module usleep for portability");
1515 # endif
1516 #endif
1517
1518
1519 #if @GNULIB_WRITE@
1520 /* Write up to COUNT bytes starting at BUF to file descriptor FD.
1521    See the POSIX:2008 specification
1522    <http://pubs.opengroup.org/onlinepubs/9699919799/functions/write.html>.  */
1523 # if @REPLACE_WRITE@
1524 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1525 #   undef write
1526 #   define write rpl_write
1527 #  endif
1528 _GL_FUNCDECL_RPL (write, ssize_t, (int fd, const void *buf, size_t count)
1529                                   _GL_ARG_NONNULL ((2)));
1530 _GL_CXXALIAS_RPL (write, ssize_t, (int fd, const void *buf, size_t count));
1531 # else
1532 /* Need to cast, because on mingw, the third parameter is
1533                                                              unsigned int count
1534    and the return type is 'int'.  */
1535 _GL_CXXALIAS_SYS_CAST (write, ssize_t, (int fd, const void *buf, size_t count));
1536 # endif
1537 _GL_CXXALIASWARN (write);
1538 #endif
1539
1540 _GL_INLINE_HEADER_END
1541
1542 #endif /* _@GUARD_PREFIX@_UNISTD_H */
1543 #endif /* _@GUARD_PREFIX@_UNISTD_H */