gnulib/import/unistd.in.h

   1 /* Substitute for and wrapper around <unistd.h>.
   2    Copyright (C) 2003-2019 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 <https://www.gnu.org/licenses/>.  */
  16
  17 #ifndef _@GUARD_PREFIX@_UNISTD_H
  18
  19 #if __GNUC__ >= 3
  20 @PRAGMA_SYSTEM_HEADER@
  21 #endif
  22 @PRAGMA_COLUMNS@
  23
  24 #if @HAVE_UNISTD_H@ && defined _GL_INCLUDING_UNISTD_H
  25 /* Special invocation convention:
  26    - On Mac OS X 10.3.9 we have a sequence of nested includes
  27      <unistd.h> -> <signal.h> -> <pthread.h> -> <unistd.h>
  28      In this situation, the functions are not yet declared, therefore we cannot
  29      provide the C++ aliases.  */
  30
  31 #@INCLUDE_NEXT@ @NEXT_UNISTD_H@
  32
  33 #else
  34 /* Normal invocation convention.  */
  35
  36 /* The include_next requires a split double-inclusion guard.  */
  37 #if @HAVE_UNISTD_H@
  38 # define _GL_INCLUDING_UNISTD_H
  39 # @INCLUDE_NEXT@ @NEXT_UNISTD_H@
  40 # undef _GL_INCLUDING_UNISTD_H
  41 #endif
  42
  43 /* Get all possible declarations of gethostname().  */
  44 #if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@ \
  45   && !defined _GL_INCLUDING_WINSOCK2_H
  46 # define _GL_INCLUDING_WINSOCK2_H
  47 # include <winsock2.h>
  48 # undef _GL_INCLUDING_WINSOCK2_H
  49 #endif
  50
  51 #if !defined _@GUARD_PREFIX@_UNISTD_H && !defined _GL_INCLUDING_WINSOCK2_H
  52 #define _@GUARD_PREFIX@_UNISTD_H
  53
  54 /* NetBSD 5.0 mis-defines NULL.  Also get size_t.  */
  55 /* But avoid namespace pollution on glibc systems.  */
  56 #ifndef __GLIBC__
  57 # include <stddef.h>
  58 #endif
  59
  60 /* mingw doesn't define the SEEK_* or *_FILENO macros in <unistd.h>.  */
  61 /* MSVC declares 'unlink' in <stdio.h>, not in <unistd.h>.  We must include
  62    it before we  #define unlink rpl_unlink.  */
  63 /* Cygwin 1.7.1 declares symlinkat in <stdio.h>, not in <unistd.h>.  */
  64 /* But avoid namespace pollution on glibc systems.  */
  65 #if (!(defined SEEK_CUR && defined SEEK_END && defined SEEK_SET) \
  66      || ((@GNULIB_UNLINK@ || defined GNULIB_POSIXCHECK) \
  67          && (defined _WIN32 && ! defined __CYGWIN__)) \
  68      || ((@GNULIB_SYMLINKAT@ || defined GNULIB_POSIXCHECK) \
  69          && defined __CYGWIN__)) \
  70     && ! defined __GLIBC__
  71 # include <stdio.h>
  72 #endif
  73
  74 /* Cygwin 1.7.1 and Android 4.3 declare unlinkat in <fcntl.h>, not in
  75    <unistd.h>.  */
  76 /* But avoid namespace pollution on glibc systems.  */
  77 #if (@GNULIB_UNLINKAT@ || defined GNULIB_POSIXCHECK) \
  78     && (defined __CYGWIN__ || defined __ANDROID__) \
  79     && ! defined __GLIBC__
  80 # include <fcntl.h>
  81 #endif
  82
  83 /* mingw fails to declare _exit in <unistd.h>.  */
  84 /* mingw, MSVC, BeOS, Haiku declare environ in <stdlib.h>, not in
  85    <unistd.h>.  */
  86 /* Solaris declares getcwd not only in <unistd.h> but also in <stdlib.h>.  */
  87 /* OSF Tru64 Unix cannot see gnulib rpl_strtod when system <stdlib.h> is
  88    included here.  */
  89 /* But avoid namespace pollution on glibc systems.  */
  90 #if !defined __GLIBC__ && !defined __osf__
  91 # define __need_system_stdlib_h
  92 # include <stdlib.h>
  93 # undef __need_system_stdlib_h
  94 #endif
  95
  96 /* Native Windows platforms declare chdir, getcwd, rmdir in
  97    <io.h> and/or <direct.h>, not in <unistd.h>.
  98    They also declare access(), chmod(), close(), dup(), dup2(), isatty(),
  99    lseek(), read(), unlink(), write() in <io.h>.  */
 100 #if ((@GNULIB_CHDIR@ || @GNULIB_GETCWD@ || @GNULIB_RMDIR@ \
 101       || defined GNULIB_POSIXCHECK) \
 102      && (defined _WIN32 && ! defined __CYGWIN__))
 103 # include <io.h>     /* mingw32, mingw64 */
 104 # include <direct.h> /* mingw64, MSVC 9 */
 105 #elif (@GNULIB_CLOSE@ || @GNULIB_DUP@ || @GNULIB_DUP2@ || @GNULIB_ISATTY@ \
 106        || @GNULIB_LSEEK@ || @GNULIB_READ@ || @GNULIB_UNLINK@ || @GNULIB_WRITE@ \
 107        || defined GNULIB_POSIXCHECK) \
 108       && (defined _WIN32 && ! defined __CYGWIN__)
 109 # include <io.h>
 110 #endif
 111
 112 /* AIX and OSF/1 5.1 declare getdomainname in <netdb.h>, not in <unistd.h>.
 113    NonStop Kernel declares gethostname in <netdb.h>, not in <unistd.h>.  */
 114 /* But avoid namespace pollution on glibc systems.  */
 115 #if ((@GNULIB_GETDOMAINNAME@ && (defined _AIX || defined __osf__)) \
 116      || (@GNULIB_GETHOSTNAME@ && defined __TANDEM)) \
 117     && !defined __GLIBC__
 118 # include <netdb.h>
 119 #endif
 120
 121 /* Android 4.3 declares fchownat in <sys/stat.h>, not in <unistd.h>.  */
 122 /* But avoid namespace pollution on glibc systems.  */
 123 #if (@GNULIB_FCHOWNAT@ || defined GNULIB_POSIXCHECK) && defined __ANDROID__ \
 124     && !defined __GLIBC__
 125 # include <sys/stat.h>
 126 #endif
 127
 128 /* MSVC defines off_t in <sys/types.h>.
 129    May also define off_t to a 64-bit type on native Windows.  */
 130 /* But avoid namespace pollution on glibc systems.  */
 131 #ifndef __GLIBC__
 132 /* Get off_t, ssize_t.  */
 133 # include <sys/types.h>
 134 #endif
 135
 136 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
 137
 138 /* The definition of _GL_ARG_NONNULL is copied here.  */
 139
 140 /* The definition of _GL_WARN_ON_USE is copied here.  */
 141
 142
 143 /* Get getopt(), optarg, optind, opterr, optopt.  */
 144 #if @GNULIB_UNISTD_H_GETOPT@ && !defined _GL_SYSTEM_GETOPT
 145 # include <getopt-cdefs.h>
 146 # include <getopt-pfx-core.h>
 147 #endif
 148
 149 #ifndef _GL_INLINE_HEADER_BEGIN
 150  #error "Please include config.h first."
 151 #endif
 152 _GL_INLINE_HEADER_BEGIN
 153 #ifndef _GL_UNISTD_INLINE
 154 # define _GL_UNISTD_INLINE _GL_INLINE
 155 #endif
 156
 157 /* Hide some function declarations from <winsock2.h>.  */
 158
 159 #if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@
 160 # if !defined _@GUARD_PREFIX@_SYS_SOCKET_H
 161 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 162 #   undef socket
 163 #   define socket              socket_used_without_including_sys_socket_h
 164 #   undef connect
 165 #   define connect             connect_used_without_including_sys_socket_h
 166 #   undef accept
 167 #   define accept              accept_used_without_including_sys_socket_h
 168 #   undef bind
 169 #   define bind                bind_used_without_including_sys_socket_h
 170 #   undef getpeername
 171 #   define getpeername         getpeername_used_without_including_sys_socket_h
 172 #   undef getsockname
 173 #   define getsockname         getsockname_used_without_including_sys_socket_h
 174 #   undef getsockopt
 175 #   define getsockopt          getsockopt_used_without_including_sys_socket_h
 176 #   undef listen
 177 #   define listen              listen_used_without_including_sys_socket_h
 178 #   undef recv
 179 #   define recv                recv_used_without_including_sys_socket_h
 180 #   undef send
 181 #   define send                send_used_without_including_sys_socket_h
 182 #   undef recvfrom
 183 #   define recvfrom            recvfrom_used_without_including_sys_socket_h
 184 #   undef sendto
 185 #   define sendto              sendto_used_without_including_sys_socket_h
 186 #   undef setsockopt
 187 #   define setsockopt          setsockopt_used_without_including_sys_socket_h
 188 #   undef shutdown
 189 #   define shutdown            shutdown_used_without_including_sys_socket_h
 190 #  else
 191     _GL_WARN_ON_USE (socket,
 192                      "socket() used without including <sys/socket.h>");
 193     _GL_WARN_ON_USE (connect,
 194                      "connect() used without including <sys/socket.h>");
 195     _GL_WARN_ON_USE (accept,
 196                      "accept() used without including <sys/socket.h>");
 197     _GL_WARN_ON_USE (bind,
 198                      "bind() used without including <sys/socket.h>");
 199     _GL_WARN_ON_USE (getpeername,
 200                      "getpeername() used without including <sys/socket.h>");
 201     _GL_WARN_ON_USE (getsockname,
 202                      "getsockname() used without including <sys/socket.h>");
 203     _GL_WARN_ON_USE (getsockopt,
 204                      "getsockopt() used without including <sys/socket.h>");
 205     _GL_WARN_ON_USE (listen,
 206                      "listen() used without including <sys/socket.h>");
 207     _GL_WARN_ON_USE (recv,
 208                      "recv() used without including <sys/socket.h>");
 209     _GL_WARN_ON_USE (send,
 210                      "send() used without including <sys/socket.h>");
 211     _GL_WARN_ON_USE (recvfrom,
 212                      "recvfrom() used without including <sys/socket.h>");
 213     _GL_WARN_ON_USE (sendto,
 214                      "sendto() used without including <sys/socket.h>");
 215     _GL_WARN_ON_USE (setsockopt,
 216                      "setsockopt() used without including <sys/socket.h>");
 217     _GL_WARN_ON_USE (shutdown,
 218                      "shutdown() used without including <sys/socket.h>");
 219 #  endif
 220 # endif
 221 # if !defined _@GUARD_PREFIX@_SYS_SELECT_H
 222 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 223 #   undef select
 224 #   define select              select_used_without_including_sys_select_h
 225 #  else
 226     _GL_WARN_ON_USE (select,
 227                      "select() used without including <sys/select.h>");
 228 #  endif
 229 # endif
 230 #endif
 231
 232
 233 /* OS/2 EMX lacks these macros.  */
 234 #ifndef STDIN_FILENO
 235 # define STDIN_FILENO 0
 236 #endif
 237 #ifndef STDOUT_FILENO
 238 # define STDOUT_FILENO 1
 239 #endif
 240 #ifndef STDERR_FILENO
 241 # define STDERR_FILENO 2
 242 #endif
 243
 244 /* Ensure *_OK macros exist.  */
 245 #ifndef F_OK
 246 # define F_OK 0
 247 # define X_OK 1
 248 # define W_OK 2
 249 # define R_OK 4
 250 #endif
 251
 252
 253 /* Declare overridden functions.  */
 254
 255
 256 #if @GNULIB_ACCESS@
 257 # if @REPLACE_ACCESS@
 258 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 259 #   undef access
 260 #   define access rpl_access
 261 #  endif
 262 _GL_FUNCDECL_RPL (access, int, (const char *file, int mode)
 263                                _GL_ARG_NONNULL ((1)));
 264 _GL_CXXALIAS_RPL (access, int, (const char *file, int mode));
 265 # else
 266 _GL_CXXALIAS_SYS (access, int, (const char *file, int mode));
 267 # endif
 268 _GL_CXXALIASWARN (access);
 269 #elif defined GNULIB_POSIXCHECK
 270 # undef access
 271 # if HAVE_RAW_DECL_ACCESS
 272 /* The access() function is a security risk.  */
 273 _GL_WARN_ON_USE (access, "access does not always support X_OK - "
 274                  "use gnulib module access for portability; "
 275                  "also, this function is a security risk - "
 276                  "use the gnulib module faccessat instead");
 277 # endif
 278 #endif
 279
 280
 281 #if @GNULIB_CHDIR@
 282 _GL_CXXALIAS_SYS (chdir, int, (const char *file) _GL_ARG_NONNULL ((1)));
 283 _GL_CXXALIASWARN (chdir);
 284 #elif defined GNULIB_POSIXCHECK
 285 # undef chdir
 286 # if HAVE_RAW_DECL_CHDIR
 287 _GL_WARN_ON_USE (chown, "chdir is not always in <unistd.h> - "
 288                  "use gnulib module chdir for portability");
 289 # endif
 290 #endif
 291
 292
 293 #if @GNULIB_CHOWN@
 294 /* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
 295    to GID (if GID is not -1).  Follow symbolic links.
 296    Return 0 if successful, otherwise -1 and errno set.
 297    See the POSIX:2008 specification
 298    <https://pubs.opengroup.org/onlinepubs/9699919799/functions/chown.html.  */
 299 # if @REPLACE_CHOWN@
 300 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 301 #   undef chown
 302 #   define chown rpl_chown
 303 #  endif
 304 _GL_FUNCDECL_RPL (chown, int, (const char *file, uid_t uid, gid_t gid)
 305                               _GL_ARG_NONNULL ((1)));
 306 _GL_CXXALIAS_RPL (chown, int, (const char *file, uid_t uid, gid_t gid));
 307 # else
 308 #  if !@HAVE_CHOWN@
 309 _GL_FUNCDECL_SYS (chown, int, (const char *file, uid_t uid, gid_t gid)
 310                               _GL_ARG_NONNULL ((1)));
 311 #  endif
 312 _GL_CXXALIAS_SYS (chown, int, (const char *file, uid_t uid, gid_t gid));
 313 # endif
 314 _GL_CXXALIASWARN (chown);
 315 #elif defined GNULIB_POSIXCHECK
 316 # undef chown
 317 # if HAVE_RAW_DECL_CHOWN
 318 _GL_WARN_ON_USE (chown, "chown fails to follow symlinks on some systems and "
 319                  "doesn't treat a uid or gid of -1 on some systems - "
 320                  "use gnulib module chown for portability");
 321 # endif
 322 #endif
 323
 324
 325 #if @GNULIB_CLOSE@
 326 # if @REPLACE_CLOSE@
 327 /* Automatically included by modules that need a replacement for close.  */
 328 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 329 #   undef close
 330 #   define close rpl_close
 331 #  endif
 332 _GL_FUNCDECL_RPL (close, int, (int fd));
 333 _GL_CXXALIAS_RPL (close, int, (int fd));
 334 # else
 335 _GL_CXXALIAS_SYS (close, int, (int fd));
 336 # endif
 337 _GL_CXXALIASWARN (close);
 338 #elif @UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@
 339 # undef close
 340 # define close close_used_without_requesting_gnulib_module_close
 341 #elif defined GNULIB_POSIXCHECK
 342 # undef close
 343 /* Assume close is always declared.  */
 344 _GL_WARN_ON_USE (close, "close does not portably work on sockets - "
 345                  "use gnulib module close for portability");
 346 #endif
 347
 348
 349 #if @GNULIB_COPY_FILE_RANGE@
 350 # if !@HAVE_COPY_FILE_RANGE@
 351 _GL_FUNCDECL_SYS (copy_file_range, ssize_t, (int ifd, off_t *ipos,
 352                                              int ofd, off_t *opos,
 353                                              size_t len, unsigned flags));
 354 _GL_CXXALIAS_SYS (copy_file_range, ssize_t, (int ifd, off_t *ipos,
 355                                              int ofd, off_t *opos,
 356                                              size_t len, unsigned flags));
 357 # endif
 358 _GL_CXXALIASWARN (copy_file_range);
 359 #elif defined GNULIB_POSIXCHECK
 360 /* Assume copy_file_range is always declared.  */
 361 _GL_WARN_ON_USE (copy_file_range,
 362                  "copy_file_range is unportable - "
 363                  "use gnulib module copy_file_range for portability");
 364 #endif
 365
 366
 367 #if @GNULIB_DUP@
 368 # if @REPLACE_DUP@
 369 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 370 #   define dup rpl_dup
 371 #  endif
 372 _GL_FUNCDECL_RPL (dup, int, (int oldfd));
 373 _GL_CXXALIAS_RPL (dup, int, (int oldfd));
 374 # else
 375 _GL_CXXALIAS_SYS (dup, int, (int oldfd));
 376 # endif
 377 _GL_CXXALIASWARN (dup);
 378 #elif defined GNULIB_POSIXCHECK
 379 # undef dup
 380 # if HAVE_RAW_DECL_DUP
 381 _GL_WARN_ON_USE (dup, "dup is unportable - "
 382                  "use gnulib module dup for portability");
 383 # endif
 384 #endif
 385
 386
 387 #if @GNULIB_DUP2@
 388 /* Copy the file descriptor OLDFD into file descriptor NEWFD.  Do nothing if
 389    NEWFD = OLDFD, otherwise close NEWFD first if it is open.
 390    Return newfd if successful, otherwise -1 and errno set.
 391    See the POSIX:2008 specification
 392    <https://pubs.opengroup.org/onlinepubs/9699919799/functions/dup2.html>.  */
 393 # if @REPLACE_DUP2@
 394 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 395 #   define dup2 rpl_dup2
 396 #  endif
 397 _GL_FUNCDECL_RPL (dup2, int, (int oldfd, int newfd));
 398 _GL_CXXALIAS_RPL (dup2, int, (int oldfd, int newfd));
 399 # else
 400 #  if !@HAVE_DUP2@
 401 _GL_FUNCDECL_SYS (dup2, int, (int oldfd, int newfd));
 402 #  endif
 403 _GL_CXXALIAS_SYS (dup2, int, (int oldfd, int newfd));
 404 # endif
 405 _GL_CXXALIASWARN (dup2);
 406 #elif defined GNULIB_POSIXCHECK
 407 # undef dup2
 408 # if HAVE_RAW_DECL_DUP2
 409 _GL_WARN_ON_USE (dup2, "dup2 is unportable - "
 410                  "use gnulib module dup2 for portability");
 411 # endif
 412 #endif
 413
 414
 415 #if @GNULIB_DUP3@
 416 /* Copy the file descriptor OLDFD into file descriptor NEWFD, with the
 417    specified flags.
 418    The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
 419    and O_TEXT, O_BINARY (defined in "binary-io.h").
 420    Close NEWFD first if it is open.
 421    Return newfd if successful, otherwise -1 and errno set.
 422    See the Linux man page at
 423    <https://www.kernel.org/doc/man-pages/online/pages/man2/dup3.2.html>.  */
 424 # if @HAVE_DUP3@
 425 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 426 #   define dup3 rpl_dup3
 427 #  endif
 428 _GL_FUNCDECL_RPL (dup3, int, (int oldfd, int newfd, int flags));
 429 _GL_CXXALIAS_RPL (dup3, int, (int oldfd, int newfd, int flags));
 430 # else
 431 _GL_FUNCDECL_SYS (dup3, int, (int oldfd, int newfd, int flags));
 432 _GL_CXXALIAS_SYS (dup3, int, (int oldfd, int newfd, int flags));
 433 # endif
 434 _GL_CXXALIASWARN (dup3);
 435 #elif defined GNULIB_POSIXCHECK
 436 # undef dup3
 437 # if HAVE_RAW_DECL_DUP3
 438 _GL_WARN_ON_USE (dup3, "dup3 is unportable - "
 439                  "use gnulib module dup3 for portability");
 440 # endif
 441 #endif
 442
 443
 444 #if @GNULIB_ENVIRON@
 445 # if defined __CYGWIN__ && !defined __i386__
 446 /* The 'environ' variable is defined in a DLL. Therefore its declaration needs
 447    the '__declspec(dllimport)' attribute, but the system's <unistd.h> lacks it.
 448    This leads to a link error on 64-bit Cygwin when the option
 449    -Wl,--disable-auto-import is in use.  */
 450 _GL_EXTERN_C __declspec(dllimport) char **environ;
 451 # endif
 452 # if !@HAVE_DECL_ENVIRON@
 453 /* Set of environment variables and values.  An array of strings of the form
 454    "VARIABLE=VALUE", terminated with a NULL.  */
 455 #  if defined __APPLE__ && defined __MACH__
 456 #   include <TargetConditionals.h>
 457 #   if !TARGET_OS_IPHONE && !TARGET_IPHONE_SIMULATOR
 458 #    define _GL_USE_CRT_EXTERNS
 459 #   endif
 460 #  endif
 461 #  ifdef _GL_USE_CRT_EXTERNS
 462 #   include <crt_externs.h>
 463 #   define environ (*_NSGetEnviron ())
 464 #  else
 465 #   ifdef __cplusplus
 466 extern "C" {
 467 #   endif
 468 extern char **environ;
 469 #   ifdef __cplusplus
 470 }
 471 #   endif
 472 #  endif
 473 # endif
 474 #elif defined GNULIB_POSIXCHECK
 475 # if HAVE_RAW_DECL_ENVIRON
 476 _GL_UNISTD_INLINE char ***
 477 _GL_WARN_ON_USE_ATTRIBUTE ("environ is unportable - "
 478                            "use gnulib module environ for portability")
 479 rpl_environ (void)
 480 {
 481   return &environ;
 482 }
 483 #  undef environ
 484 #  define environ (*rpl_environ ())
 485 # endif
 486 #endif
 487
 488
 489 #if @GNULIB_EUIDACCESS@
 490 /* Like access(), except that it uses the effective user id and group id of
 491    the current process.  */
 492 # if !@HAVE_EUIDACCESS@
 493 _GL_FUNCDECL_SYS (euidaccess, int, (const char *filename, int mode)
 494                                    _GL_ARG_NONNULL ((1)));
 495 # endif
 496 _GL_CXXALIAS_SYS (euidaccess, int, (const char *filename, int mode));
 497 _GL_CXXALIASWARN (euidaccess);
 498 # if defined GNULIB_POSIXCHECK
 499 /* Like access(), this function is a security risk.  */
 500 _GL_WARN_ON_USE (euidaccess, "the euidaccess function is a security risk - "
 501                  "use the gnulib module faccessat instead");
 502 # endif
 503 #elif defined GNULIB_POSIXCHECK
 504 # undef euidaccess
 505 # if HAVE_RAW_DECL_EUIDACCESS
 506 _GL_WARN_ON_USE (euidaccess, "euidaccess is unportable - "
 507                  "use gnulib module euidaccess for portability");
 508 # endif
 509 #endif
 510
 511
 512 #if @GNULIB_FACCESSAT@
 513 # if @REPLACE_FACCESSAT@
 514 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 515 #   undef faccessat
 516 #   define faccessat rpl_faccessat
 517 #  endif
 518 _GL_FUNCDECL_RPL (faccessat, int,
 519                   (int fd, char const *name, int mode, int flag)
 520                   _GL_ARG_NONNULL ((2)));
 521 _GL_CXXALIAS_RPL (faccessat, int,
 522                   (int fd, char const *name, int mode, int flag));
 523 # else
 524 #  if !@HAVE_FACCESSAT@
 525 _GL_FUNCDECL_SYS (faccessat, int,
 526                   (int fd, char const *file, int mode, int flag)
 527                   _GL_ARG_NONNULL ((2)));
 528 #  endif
 529 _GL_CXXALIAS_SYS (faccessat, int,
 530                   (int fd, char const *file, int mode, int flag));
 531 # endif
 532 _GL_CXXALIASWARN (faccessat);
 533 #elif defined GNULIB_POSIXCHECK
 534 # undef faccessat
 535 # if HAVE_RAW_DECL_FACCESSAT
 536 _GL_WARN_ON_USE (faccessat, "faccessat is not portable - "
 537                  "use gnulib module faccessat for portability");
 538 # endif
 539 #endif
 540
 541
 542 #if @GNULIB_FCHDIR@
 543 /* Change the process' current working directory to the directory on which
 544    the given file descriptor is open.
 545    Return 0 if successful, otherwise -1 and errno set.
 546    See the POSIX:2008 specification
 547    <https://pubs.opengroup.org/onlinepubs/9699919799/functions/fchdir.html>.  */
 548 # if ! @HAVE_FCHDIR@
 549 _GL_FUNCDECL_SYS (fchdir, int, (int /*fd*/));
 550
 551 /* Gnulib internal hooks needed to maintain the fchdir metadata.  */
 552 _GL_EXTERN_C int _gl_register_fd (int fd, const char *filename)
 553      _GL_ARG_NONNULL ((2));
 554 _GL_EXTERN_C void _gl_unregister_fd (int fd);
 555 _GL_EXTERN_C int _gl_register_dup (int oldfd, int newfd);
 556 _GL_EXTERN_C const char *_gl_directory_name (int fd);
 557
 558 # else
 559 #  if !@HAVE_DECL_FCHDIR@
 560 _GL_FUNCDECL_SYS (fchdir, int, (int /*fd*/));
 561 #  endif
 562 # endif
 563 _GL_CXXALIAS_SYS (fchdir, int, (int /*fd*/));
 564 _GL_CXXALIASWARN (fchdir);
 565 #elif defined GNULIB_POSIXCHECK
 566 # undef fchdir
 567 # if HAVE_RAW_DECL_FCHDIR
 568 _GL_WARN_ON_USE (fchdir, "fchdir is unportable - "
 569                  "use gnulib module fchdir for portability");
 570 # endif
 571 #endif
 572
 573
 574 #if @GNULIB_FCHOWNAT@
 575 # if @REPLACE_FCHOWNAT@
 576 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 577 #   undef fchownat
 578 #   define fchownat rpl_fchownat
 579 #  endif
 580 _GL_FUNCDECL_RPL (fchownat, int, (int fd, char const *file,
 581                                   uid_t owner, gid_t group, int flag)
 582                                  _GL_ARG_NONNULL ((2)));
 583 _GL_CXXALIAS_RPL (fchownat, int, (int fd, char const *file,
 584                                   uid_t owner, gid_t group, int flag));
 585 # else
 586 #  if !@HAVE_FCHOWNAT@
 587 _GL_FUNCDECL_SYS (fchownat, int, (int fd, char const *file,
 588                                   uid_t owner, gid_t group, int flag)
 589                                  _GL_ARG_NONNULL ((2)));
 590 #  endif
 591 _GL_CXXALIAS_SYS (fchownat, int, (int fd, char const *file,
 592                                   uid_t owner, gid_t group, int flag));
 593 # endif
 594 _GL_CXXALIASWARN (fchownat);
 595 #elif defined GNULIB_POSIXCHECK
 596 # undef fchownat
 597 # if HAVE_RAW_DECL_FCHOWNAT
 598 _GL_WARN_ON_USE (fchownat, "fchownat is not portable - "
 599                  "use gnulib module openat for portability");
 600 # endif
 601 #endif
 602
 603
 604 #if @GNULIB_FDATASYNC@
 605 /* Synchronize changes to a file.
 606    Return 0 if successful, otherwise -1 and errno set.
 607    See POSIX:2008 specification
 608    <https://pubs.opengroup.org/onlinepubs/9699919799/functions/fdatasync.html>.  */
 609 # if !@HAVE_FDATASYNC@ || !@HAVE_DECL_FDATASYNC@
 610 _GL_FUNCDECL_SYS (fdatasync, int, (int fd));
 611 # endif
 612 _GL_CXXALIAS_SYS (fdatasync, int, (int fd));
 613 _GL_CXXALIASWARN (fdatasync);
 614 #elif defined GNULIB_POSIXCHECK
 615 # undef fdatasync
 616 # if HAVE_RAW_DECL_FDATASYNC
 617 _GL_WARN_ON_USE (fdatasync, "fdatasync is unportable - "
 618                  "use gnulib module fdatasync for portability");
 619 # endif
 620 #endif
 621
 622
 623 #if @GNULIB_FSYNC@
 624 /* Synchronize changes, including metadata, to a file.
 625    Return 0 if successful, otherwise -1 and errno set.
 626    See POSIX:2008 specification
 627    <https://pubs.opengroup.org/onlinepubs/9699919799/functions/fsync.html>.  */
 628 # if !@HAVE_FSYNC@
 629 _GL_FUNCDECL_SYS (fsync, int, (int fd));
 630 # endif
 631 _GL_CXXALIAS_SYS (fsync, int, (int fd));
 632 _GL_CXXALIASWARN (fsync);
 633 #elif defined GNULIB_POSIXCHECK
 634 # undef fsync
 635 # if HAVE_RAW_DECL_FSYNC
 636 _GL_WARN_ON_USE (fsync, "fsync is unportable - "
 637                  "use gnulib module fsync for portability");
 638 # endif
 639 #endif
 640
 641
 642 #if @GNULIB_FTRUNCATE@
 643 /* Change the size of the file to which FD is opened to become equal to LENGTH.
 644    Return 0 if successful, otherwise -1 and errno set.
 645    See the POSIX:2008 specification
 646    <https://pubs.opengroup.org/onlinepubs/9699919799/functions/ftruncate.html>.  */
 647 # if @REPLACE_FTRUNCATE@
 648 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 649 #   undef ftruncate
 650 #   define ftruncate rpl_ftruncate
 651 #  endif
 652 _GL_FUNCDECL_RPL (ftruncate, int, (int fd, off_t length));
 653 _GL_CXXALIAS_RPL (ftruncate, int, (int fd, off_t length));
 654 # else
 655 #  if !@HAVE_FTRUNCATE@
 656 _GL_FUNCDECL_SYS (ftruncate, int, (int fd, off_t length));
 657 #  endif
 658 _GL_CXXALIAS_SYS (ftruncate, int, (int fd, off_t length));
 659 # endif
 660 _GL_CXXALIASWARN (ftruncate);
 661 #elif defined GNULIB_POSIXCHECK
 662 # undef ftruncate
 663 # if HAVE_RAW_DECL_FTRUNCATE
 664 _GL_WARN_ON_USE (ftruncate, "ftruncate is unportable - "
 665                  "use gnulib module ftruncate for portability");
 666 # endif
 667 #endif
 668
 669
 670 #if @GNULIB_GETCWD@
 671 /* Get the name of the current working directory, and put it in SIZE bytes
 672    of BUF.
 673    Return BUF if successful, or NULL if the directory couldn't be determined
 674    or SIZE was too small.
 675    See the POSIX:2008 specification
 676    <https://pubs.opengroup.org/onlinepubs/9699919799/functions/getcwd.html>.
 677    Additionally, the gnulib module 'getcwd' guarantees the following GNU
 678    extension: If BUF is NULL, an array is allocated with 'malloc'; the array
 679    is SIZE bytes long, unless SIZE == 0, in which case it is as big as
 680    necessary.  */
 681 # if @REPLACE_GETCWD@
 682 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 683 #   define getcwd rpl_getcwd
 684 #  endif
 685 _GL_FUNCDECL_RPL (getcwd, char *, (char *buf, size_t size));
 686 _GL_CXXALIAS_RPL (getcwd, char *, (char *buf, size_t size));
 687 # else
 688 /* Need to cast, because on mingw, the second parameter is
 689                                                    int size.  */
 690 _GL_CXXALIAS_SYS_CAST (getcwd, char *, (char *buf, size_t size));
 691 # endif
 692 _GL_CXXALIASWARN (getcwd);
 693 #elif defined GNULIB_POSIXCHECK
 694 # undef getcwd
 695 # if HAVE_RAW_DECL_GETCWD
 696 _GL_WARN_ON_USE (getcwd, "getcwd is unportable - "
 697                  "use gnulib module getcwd for portability");
 698 # endif
 699 #endif
 700
 701
 702 #if @GNULIB_GETDOMAINNAME@
 703 /* Return the NIS domain name of the machine.
 704    WARNING! The NIS domain name is unrelated to the fully qualified host name
 705             of the machine.  It is also unrelated to email addresses.
 706    WARNING! The NIS domain name is usually the empty string or "(none)" when
 707             not using NIS.
 708
 709    Put up to LEN bytes of the NIS domain name into NAME.
 710    Null terminate it if the name is shorter than LEN.
 711    If the NIS domain name is longer than LEN, set errno = EINVAL and return -1.
 712    Return 0 if successful, otherwise set errno and return -1.  */
 713 # if @REPLACE_GETDOMAINNAME@
 714 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 715 #   undef getdomainname
 716 #   define getdomainname rpl_getdomainname
 717 #  endif
 718 _GL_FUNCDECL_RPL (getdomainname, int, (char *name, size_t len)
 719                                       _GL_ARG_NONNULL ((1)));
 720 _GL_CXXALIAS_RPL (getdomainname, int, (char *name, size_t len));
 721 # else
 722 #  if !@HAVE_DECL_GETDOMAINNAME@
 723 _GL_FUNCDECL_SYS (getdomainname, int, (char *name, size_t len)
 724                                       _GL_ARG_NONNULL ((1)));
 725 #  endif
 726 _GL_CXXALIAS_SYS (getdomainname, int, (char *name, size_t len));
 727 # endif
 728 _GL_CXXALIASWARN (getdomainname);
 729 #elif defined GNULIB_POSIXCHECK
 730 # undef getdomainname
 731 # if HAVE_RAW_DECL_GETDOMAINNAME
 732 _GL_WARN_ON_USE (getdomainname, "getdomainname is unportable - "
 733                  "use gnulib module getdomainname for portability");
 734 # endif
 735 #endif
 736
 737
 738 #if @GNULIB_GETDTABLESIZE@
 739 /* Return the maximum number of file descriptors in the current process.
 740    In POSIX, this is same as sysconf (_SC_OPEN_MAX).  */
 741 # if @REPLACE_GETDTABLESIZE@
 742 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 743 #   undef getdtablesize
 744 #   define getdtablesize rpl_getdtablesize
 745 #  endif
 746 _GL_FUNCDECL_RPL (getdtablesize, int, (void));
 747 _GL_CXXALIAS_RPL (getdtablesize, int, (void));
 748 # else
 749 #  if !@HAVE_GETDTABLESIZE@
 750 _GL_FUNCDECL_SYS (getdtablesize, int, (void));
 751 #  endif
 752 /* Need to cast, because on AIX, the parameter list is
 753                                            (...).  */
 754 _GL_CXXALIAS_SYS_CAST (getdtablesize, int, (void));
 755 # endif
 756 _GL_CXXALIASWARN (getdtablesize);
 757 #elif defined GNULIB_POSIXCHECK
 758 # undef getdtablesize
 759 # if HAVE_RAW_DECL_GETDTABLESIZE
 760 _GL_WARN_ON_USE (getdtablesize, "getdtablesize is unportable - "
 761                  "use gnulib module getdtablesize for portability");
 762 # endif
 763 #endif
 764
 765
 766 #if @GNULIB_GETGROUPS@
 767 /* Return the supplemental groups that the current process belongs to.
 768    It is unspecified whether the effective group id is in the list.
 769    If N is 0, return the group count; otherwise, N describes how many
 770    entries are available in GROUPS.  Return -1 and set errno if N is
 771    not 0 and not large enough.  Fails with ENOSYS on some systems.  */
 772 # if @REPLACE_GETGROUPS@
 773 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 774 #   undef getgroups
 775 #   define getgroups rpl_getgroups
 776 #  endif
 777 _GL_FUNCDECL_RPL (getgroups, int, (int n, gid_t *groups));
 778 _GL_CXXALIAS_RPL (getgroups, int, (int n, gid_t *groups));
 779 # else
 780 #  if !@HAVE_GETGROUPS@
 781 _GL_FUNCDECL_SYS (getgroups, int, (int n, gid_t *groups));
 782 #  endif
 783 _GL_CXXALIAS_SYS (getgroups, int, (int n, gid_t *groups));
 784 # endif
 785 _GL_CXXALIASWARN (getgroups);
 786 #elif defined GNULIB_POSIXCHECK
 787 # undef getgroups
 788 # if HAVE_RAW_DECL_GETGROUPS
 789 _GL_WARN_ON_USE (getgroups, "getgroups is unportable - "
 790                  "use gnulib module getgroups for portability");
 791 # endif
 792 #endif
 793
 794
 795 #if @GNULIB_GETHOSTNAME@
 796 /* Return the standard host name of the machine.
 797    WARNING! The host name may or may not be fully qualified.
 798
 799    Put up to LEN bytes of the host name into NAME.
 800    Null terminate it if the name is shorter than LEN.
 801    If the host name is longer than LEN, set errno = EINVAL and return -1.
 802    Return 0 if successful, otherwise set errno and return -1.  */
 803 # if @UNISTD_H_HAVE_WINSOCK2_H@
 804 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 805 #   undef gethostname
 806 #   define gethostname rpl_gethostname
 807 #  endif
 808 _GL_FUNCDECL_RPL (gethostname, int, (char *name, size_t len)
 809                                     _GL_ARG_NONNULL ((1)));
 810 _GL_CXXALIAS_RPL (gethostname, int, (char *name, size_t len));
 811 # else
 812 #  if !@HAVE_GETHOSTNAME@
 813 _GL_FUNCDECL_SYS (gethostname, int, (char *name, size_t len)
 814                                     _GL_ARG_NONNULL ((1)));
 815 #  endif
 816 /* Need to cast, because on Solaris 10 and OSF/1 5.1 systems, the second
 817    parameter is
 818                                                       int len.  */
 819 _GL_CXXALIAS_SYS_CAST (gethostname, int, (char *name, size_t len));
 820 # endif
 821 _GL_CXXALIASWARN (gethostname);
 822 #elif @UNISTD_H_HAVE_WINSOCK2_H@
 823 # undef gethostname
 824 # define gethostname gethostname_used_without_requesting_gnulib_module_gethostname
 825 #elif defined GNULIB_POSIXCHECK
 826 # undef gethostname
 827 # if HAVE_RAW_DECL_GETHOSTNAME
 828 _GL_WARN_ON_USE (gethostname, "gethostname is unportable - "
 829                  "use gnulib module gethostname for portability");
 830 # endif
 831 #endif
 832
 833
 834 #if @GNULIB_GETLOGIN@
 835 /* Returns the user's login name, or NULL if it cannot be found.  Upon error,
 836    returns NULL with errno set.
 837
 838    See <https://pubs.opengroup.org/onlinepubs/9699919799/functions/getlogin.html>.
 839
 840    Most programs don't need to use this function, because the information is
 841    available through environment variables:
 842      ${LOGNAME-$USER}        on Unix platforms,
 843      $USERNAME               on native Windows platforms.
 844  */
 845 # if !@HAVE_DECL_GETLOGIN@
 846 _GL_FUNCDECL_SYS (getlogin, char *, (void));
 847 # endif
 848 _GL_CXXALIAS_SYS (getlogin, char *, (void));
 849 _GL_CXXALIASWARN (getlogin);
 850 #elif defined GNULIB_POSIXCHECK
 851 # undef getlogin
 852 # if HAVE_RAW_DECL_GETLOGIN
 853 _GL_WARN_ON_USE (getlogin, "getlogin is unportable - "
 854                  "use gnulib module getlogin for portability");
 855 # endif
 856 #endif
 857
 858
 859 #if @GNULIB_GETLOGIN_R@
 860 /* Copies the user's login name to NAME.
 861    The array pointed to by NAME has room for SIZE bytes.
 862
 863    Returns 0 if successful.  Upon error, an error number is returned, or -1 in
 864    the case that the login name cannot be found but no specific error is
 865    provided (this case is hopefully rare but is left open by the POSIX spec).
 866
 867    See <https://pubs.opengroup.org/onlinepubs/9699919799/functions/getlogin.html>.
 868
 869    Most programs don't need to use this function, because the information is
 870    available through environment variables:
 871      ${LOGNAME-$USER}        on Unix platforms,
 872      $USERNAME               on native Windows platforms.
 873  */
 874 # if @REPLACE_GETLOGIN_R@
 875 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 876 #   define getlogin_r rpl_getlogin_r
 877 #  endif
 878 _GL_FUNCDECL_RPL (getlogin_r, int, (char *name, size_t size)
 879                                    _GL_ARG_NONNULL ((1)));
 880 _GL_CXXALIAS_RPL (getlogin_r, int, (char *name, size_t size));
 881 # else
 882 #  if !@HAVE_DECL_GETLOGIN_R@
 883 _GL_FUNCDECL_SYS (getlogin_r, int, (char *name, size_t size)
 884                                    _GL_ARG_NONNULL ((1)));
 885 #  endif
 886 /* Need to cast, because on Solaris 10 systems, the second argument is
 887                                                      int size.  */
 888 _GL_CXXALIAS_SYS_CAST (getlogin_r, int, (char *name, size_t size));
 889 # endif
 890 _GL_CXXALIASWARN (getlogin_r);
 891 #elif defined GNULIB_POSIXCHECK
 892 # undef getlogin_r
 893 # if HAVE_RAW_DECL_GETLOGIN_R
 894 _GL_WARN_ON_USE (getlogin_r, "getlogin_r is unportable - "
 895                  "use gnulib module getlogin_r for portability");
 896 # endif
 897 #endif
 898
 899
 900 #if @GNULIB_GETPAGESIZE@
 901 # if @REPLACE_GETPAGESIZE@
 902 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 903 #   define getpagesize rpl_getpagesize
 904 #  endif
 905 _GL_FUNCDECL_RPL (getpagesize, int, (void));
 906 _GL_CXXALIAS_RPL (getpagesize, int, (void));
 907 # else
 908 /* On HP-UX, getpagesize exists, but it is not declared in <unistd.h> even if
 909    the compiler options -D_HPUX_SOURCE -D_XOPEN_SOURCE=600 are used.  */
 910 #  if defined __hpux
 911 _GL_FUNCDECL_SYS (getpagesize, int, (void));
 912 #  endif
 913 #  if !@HAVE_GETPAGESIZE@
 914 #   if !defined getpagesize
 915 /* This is for POSIX systems.  */
 916 #    if !defined _gl_getpagesize && defined _SC_PAGESIZE
 917 #     if ! (defined __VMS && __VMS_VER < 70000000)
 918 #      define _gl_getpagesize() sysconf (_SC_PAGESIZE)
 919 #     endif
 920 #    endif
 921 /* This is for older VMS.  */
 922 #    if !defined _gl_getpagesize && defined __VMS
 923 #     ifdef __ALPHA
 924 #      define _gl_getpagesize() 8192
 925 #     else
 926 #      define _gl_getpagesize() 512
 927 #     endif
 928 #    endif
 929 /* This is for BeOS.  */
 930 #    if !defined _gl_getpagesize && @HAVE_OS_H@
 931 #     include <OS.h>
 932 #     if defined B_PAGE_SIZE
 933 #      define _gl_getpagesize() B_PAGE_SIZE
 934 #     endif
 935 #    endif
 936 /* This is for AmigaOS4.0.  */
 937 #    if !defined _gl_getpagesize && defined __amigaos4__
 938 #     define _gl_getpagesize() 2048
 939 #    endif
 940 /* This is for older Unix systems.  */
 941 #    if !defined _gl_getpagesize && @HAVE_SYS_PARAM_H@
 942 #     include <sys/param.h>
 943 #     ifdef EXEC_PAGESIZE
 944 #      define _gl_getpagesize() EXEC_PAGESIZE
 945 #     else
 946 #      ifdef NBPG
 947 #       ifndef CLSIZE
 948 #        define CLSIZE 1
 949 #       endif
 950 #       define _gl_getpagesize() (NBPG * CLSIZE)
 951 #      else
 952 #       ifdef NBPC
 953 #        define _gl_getpagesize() NBPC
 954 #       endif
 955 #      endif
 956 #     endif
 957 #    endif
 958 #    if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 959 #     define getpagesize() _gl_getpagesize ()
 960 #    else
 961 #     if !GNULIB_defined_getpagesize_function
 962 _GL_UNISTD_INLINE int
 963 getpagesize ()
 964 {
 965   return _gl_getpagesize ();
 966 }
 967 #      define GNULIB_defined_getpagesize_function 1
 968 #     endif
 969 #    endif
 970 #   endif
 971 #  endif
 972 /* Need to cast, because on Cygwin 1.5.x systems, the return type is size_t.  */
 973 _GL_CXXALIAS_SYS_CAST (getpagesize, int, (void));
 974 # endif
 975 # if @HAVE_DECL_GETPAGESIZE@
 976 _GL_CXXALIASWARN (getpagesize);
 977 # endif
 978 #elif defined GNULIB_POSIXCHECK
 979 # undef getpagesize
 980 # if HAVE_RAW_DECL_GETPAGESIZE
 981 _GL_WARN_ON_USE (getpagesize, "getpagesize is unportable - "
 982                  "use gnulib module getpagesize for portability");
 983 # endif
 984 #endif
 985
 986
 987 #if @GNULIB_GETPASS@
 988 /* Function getpass() from module 'getpass':
 989      Read a password from /dev/tty or stdin.
 990    Function getpass() from module 'getpass-gnu':
 991      Read a password of arbitrary length from /dev/tty or stdin.  */
 992 # if @REPLACE_GETPASS@
 993 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 994 #   undef getpass
 995 #   define getpass rpl_getpass
 996 #  endif
 997 _GL_FUNCDECL_RPL (getpass, char *, (const char *prompt)
 998                                    _GL_ARG_NONNULL ((1)));
 999 _GL_CXXALIAS_RPL (getpass, char *, (const char *prompt));
1000 # else
1001 #  if !@HAVE_GETPASS@
1002 _GL_FUNCDECL_SYS (getpass, char *, (const char *prompt)
1003                                    _GL_ARG_NONNULL ((1)));
1004 #  endif
1005 _GL_CXXALIAS_SYS (getpass, char *, (const char *prompt));
1006 # endif
1007 _GL_CXXALIASWARN (getpass);
1008 #elif defined GNULIB_POSIXCHECK
1009 # undef getpass
1010 # if HAVE_RAW_DECL_GETPASS
1011 _GL_WARN_ON_USE (getpass, "getpass is unportable - "
1012                  "use gnulib module getpass or getpass-gnu for portability");
1013 # endif
1014 #endif
1015
1016
1017 #if @GNULIB_GETUSERSHELL@
1018 /* Return the next valid login shell on the system, or NULL when the end of
1019    the list has been reached.  */
1020 # if !@HAVE_DECL_GETUSERSHELL@
1021 _GL_FUNCDECL_SYS (getusershell, char *, (void));
1022 # endif
1023 _GL_CXXALIAS_SYS (getusershell, char *, (void));
1024 _GL_CXXALIASWARN (getusershell);
1025 #elif defined GNULIB_POSIXCHECK
1026 # undef getusershell
1027 # if HAVE_RAW_DECL_GETUSERSHELL
1028 _GL_WARN_ON_USE (getusershell, "getusershell is unportable - "
1029                  "use gnulib module getusershell for portability");
1030 # endif
1031 #endif
1032
1033 #if @GNULIB_GETUSERSHELL@
1034 /* Rewind to pointer that is advanced at each getusershell() call.  */
1035 # if !@HAVE_DECL_GETUSERSHELL@
1036 _GL_FUNCDECL_SYS (setusershell, void, (void));
1037 # endif
1038 _GL_CXXALIAS_SYS (setusershell, void, (void));
1039 _GL_CXXALIASWARN (setusershell);
1040 #elif defined GNULIB_POSIXCHECK
1041 # undef setusershell
1042 # if HAVE_RAW_DECL_SETUSERSHELL
1043 _GL_WARN_ON_USE (setusershell, "setusershell is unportable - "
1044                  "use gnulib module getusershell for portability");
1045 # endif
1046 #endif
1047
1048 #if @GNULIB_GETUSERSHELL@
1049 /* Free the pointer that is advanced at each getusershell() call and
1050    associated resources.  */
1051 # if !@HAVE_DECL_GETUSERSHELL@
1052 _GL_FUNCDECL_SYS (endusershell, void, (void));
1053 # endif
1054 _GL_CXXALIAS_SYS (endusershell, void, (void));
1055 _GL_CXXALIASWARN (endusershell);
1056 #elif defined GNULIB_POSIXCHECK
1057 # undef endusershell
1058 # if HAVE_RAW_DECL_ENDUSERSHELL
1059 _GL_WARN_ON_USE (endusershell, "endusershell is unportable - "
1060                  "use gnulib module getusershell for portability");
1061 # endif
1062 #endif
1063
1064
1065 #if @GNULIB_GROUP_MEMBER@
1066 /* Determine whether group id is in calling user's group list.  */
1067 # if !@HAVE_GROUP_MEMBER@
1068 _GL_FUNCDECL_SYS (group_member, int, (gid_t gid));
1069 # endif
1070 _GL_CXXALIAS_SYS (group_member, int, (gid_t gid));
1071 _GL_CXXALIASWARN (group_member);
1072 #elif defined GNULIB_POSIXCHECK
1073 # undef group_member
1074 # if HAVE_RAW_DECL_GROUP_MEMBER
1075 _GL_WARN_ON_USE (group_member, "group_member is unportable - "
1076                  "use gnulib module group-member for portability");
1077 # endif
1078 #endif
1079
1080
1081 #if @GNULIB_ISATTY@
1082 # if @REPLACE_ISATTY@
1083 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1084 #   undef isatty
1085 #   define isatty rpl_isatty
1086 #  endif
1087 _GL_FUNCDECL_RPL (isatty, int, (int fd));
1088 _GL_CXXALIAS_RPL (isatty, int, (int fd));
1089 # else
1090 _GL_CXXALIAS_SYS (isatty, int, (int fd));
1091 # endif
1092 _GL_CXXALIASWARN (isatty);
1093 #elif defined GNULIB_POSIXCHECK
1094 # undef isatty
1095 # if HAVE_RAW_DECL_ISATTY
1096 _GL_WARN_ON_USE (isatty, "isatty has portability problems on native Windows - "
1097                  "use gnulib module isatty for portability");
1098 # endif
1099 #endif
1100
1101
1102 #if @GNULIB_LCHOWN@
1103 /* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
1104    to GID (if GID is not -1).  Do not follow symbolic links.
1105    Return 0 if successful, otherwise -1 and errno set.
1106    See the POSIX:2008 specification
1107    <https://pubs.opengroup.org/onlinepubs/9699919799/functions/lchown.html>.  */
1108 # if @REPLACE_LCHOWN@
1109 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1110 #   undef lchown
1111 #   define lchown rpl_lchown
1112 #  endif
1113 _GL_FUNCDECL_RPL (lchown, int, (char const *file, uid_t owner, gid_t group)
1114                                _GL_ARG_NONNULL ((1)));
1115 _GL_CXXALIAS_RPL (lchown, int, (char const *file, uid_t owner, gid_t group));
1116 # else
1117 #  if !@HAVE_LCHOWN@
1118 _GL_FUNCDECL_SYS (lchown, int, (char const *file, uid_t owner, gid_t group)
1119                                _GL_ARG_NONNULL ((1)));
1120 #  endif
1121 _GL_CXXALIAS_SYS (lchown, int, (char const *file, uid_t owner, gid_t group));
1122 # endif
1123 _GL_CXXALIASWARN (lchown);
1124 #elif defined GNULIB_POSIXCHECK
1125 # undef lchown
1126 # if HAVE_RAW_DECL_LCHOWN
1127 _GL_WARN_ON_USE (lchown, "lchown is unportable to pre-POSIX.1-2001 systems - "
1128                  "use gnulib module lchown for portability");
1129 # endif
1130 #endif
1131
1132
1133 #if @GNULIB_LINK@
1134 /* Create a new hard link for an existing file.
1135    Return 0 if successful, otherwise -1 and errno set.
1136    See POSIX:2008 specification
1137    <https://pubs.opengroup.org/onlinepubs/9699919799/functions/link.html>.  */
1138 # if @REPLACE_LINK@
1139 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1140 #   define link rpl_link
1141 #  endif
1142 _GL_FUNCDECL_RPL (link, int, (const char *path1, const char *path2)
1143                              _GL_ARG_NONNULL ((1, 2)));
1144 _GL_CXXALIAS_RPL (link, int, (const char *path1, const char *path2));
1145 # else
1146 #  if !@HAVE_LINK@
1147 _GL_FUNCDECL_SYS (link, int, (const char *path1, const char *path2)
1148                              _GL_ARG_NONNULL ((1, 2)));
1149 #  endif
1150 _GL_CXXALIAS_SYS (link, int, (const char *path1, const char *path2));
1151 # endif
1152 _GL_CXXALIASWARN (link);
1153 #elif defined GNULIB_POSIXCHECK
1154 # undef link
1155 # if HAVE_RAW_DECL_LINK
1156 _GL_WARN_ON_USE (link, "link is unportable - "
1157                  "use gnulib module link for portability");
1158 # endif
1159 #endif
1160
1161
1162 #if @GNULIB_LINKAT@
1163 /* Create a new hard link for an existing file, relative to two
1164    directories.  FLAG controls whether symlinks are followed.
1165    Return 0 if successful, otherwise -1 and errno set.  */
1166 # if @REPLACE_LINKAT@
1167 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1168 #   undef linkat
1169 #   define linkat rpl_linkat
1170 #  endif
1171 _GL_FUNCDECL_RPL (linkat, int,
1172                   (int fd1, const char *path1, int fd2, const char *path2,
1173                    int flag)
1174                   _GL_ARG_NONNULL ((2, 4)));
1175 _GL_CXXALIAS_RPL (linkat, int,
1176                   (int fd1, const char *path1, int fd2, const char *path2,
1177                    int flag));
1178 # else
1179 #  if !@HAVE_LINKAT@
1180 _GL_FUNCDECL_SYS (linkat, int,
1181                   (int fd1, const char *path1, int fd2, const char *path2,
1182                    int flag)
1183                   _GL_ARG_NONNULL ((2, 4)));
1184 #  endif
1185 _GL_CXXALIAS_SYS (linkat, int,
1186                   (int fd1, const char *path1, int fd2, const char *path2,
1187                    int flag));
1188 # endif
1189 _GL_CXXALIASWARN (linkat);
1190 #elif defined GNULIB_POSIXCHECK
1191 # undef linkat
1192 # if HAVE_RAW_DECL_LINKAT
1193 _GL_WARN_ON_USE (linkat, "linkat is unportable - "
1194                  "use gnulib module linkat for portability");
1195 # endif
1196 #endif
1197
1198
1199 #if @GNULIB_LSEEK@
1200 /* Set the offset of FD relative to SEEK_SET, SEEK_CUR, or SEEK_END.
1201    Return the new offset if successful, otherwise -1 and errno set.
1202    See the POSIX:2008 specification
1203    <https://pubs.opengroup.org/onlinepubs/9699919799/functions/lseek.html>.  */
1204 # if @REPLACE_LSEEK@
1205 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1206 #   define lseek rpl_lseek
1207 #  endif
1208 _GL_FUNCDECL_RPL (lseek, off_t, (int fd, off_t offset, int whence));
1209 _GL_CXXALIAS_RPL (lseek, off_t, (int fd, off_t offset, int whence));
1210 # else
1211 _GL_CXXALIAS_SYS (lseek, off_t, (int fd, off_t offset, int whence));
1212 # endif
1213 _GL_CXXALIASWARN (lseek);
1214 #elif defined GNULIB_POSIXCHECK
1215 # undef lseek
1216 # if HAVE_RAW_DECL_LSEEK
1217 _GL_WARN_ON_USE (lseek, "lseek does not fail with ESPIPE on pipes on some "
1218                  "systems - use gnulib module lseek for portability");
1219 # endif
1220 #endif
1221
1222
1223 #if @GNULIB_PIPE@
1224 /* Create a pipe, defaulting to O_BINARY mode.
1225    Store the read-end as fd[0] and the write-end as fd[1].
1226    Return 0 upon success, or -1 with errno set upon failure.  */
1227 # if !@HAVE_PIPE@
1228 _GL_FUNCDECL_SYS (pipe, int, (int fd[2]) _GL_ARG_NONNULL ((1)));
1229 # endif
1230 _GL_CXXALIAS_SYS (pipe, int, (int fd[2]));
1231 _GL_CXXALIASWARN (pipe);
1232 #elif defined GNULIB_POSIXCHECK
1233 # undef pipe
1234 # if HAVE_RAW_DECL_PIPE
1235 _GL_WARN_ON_USE (pipe, "pipe is unportable - "
1236                  "use gnulib module pipe-posix for portability");
1237 # endif
1238 #endif
1239
1240
1241 #if @GNULIB_PIPE2@
1242 /* Create a pipe, applying the given flags when opening the read-end of the
1243    pipe and the write-end of the pipe.
1244    The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
1245    and O_TEXT, O_BINARY (defined in "binary-io.h").
1246    Store the read-end as fd[0] and the write-end as fd[1].
1247    Return 0 upon success, or -1 with errno set upon failure.
1248    See also the Linux man page at
1249    <https://www.kernel.org/doc/man-pages/online/pages/man2/pipe2.2.html>.  */
1250 # if @HAVE_PIPE2@
1251 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1252 #   define pipe2 rpl_pipe2
1253 #  endif
1254 _GL_FUNCDECL_RPL (pipe2, int, (int fd[2], int flags) _GL_ARG_NONNULL ((1)));
1255 _GL_CXXALIAS_RPL (pipe2, int, (int fd[2], int flags));
1256 # else
1257 _GL_FUNCDECL_SYS (pipe2, int, (int fd[2], int flags) _GL_ARG_NONNULL ((1)));
1258 _GL_CXXALIAS_SYS (pipe2, int, (int fd[2], int flags));
1259 # endif
1260 _GL_CXXALIASWARN (pipe2);
1261 #elif defined GNULIB_POSIXCHECK
1262 # undef pipe2
1263 # if HAVE_RAW_DECL_PIPE2
1264 _GL_WARN_ON_USE (pipe2, "pipe2 is unportable - "
1265                  "use gnulib module pipe2 for portability");
1266 # endif
1267 #endif
1268
1269
1270 #if @GNULIB_PREAD@
1271 /* Read at most BUFSIZE bytes from FD into BUF, starting at OFFSET.
1272    Return the number of bytes placed into BUF if successful, otherwise
1273    set errno and return -1.  0 indicates EOF.
1274    See the POSIX:2008 specification
1275    <https://pubs.opengroup.org/onlinepubs/9699919799/functions/pread.html>.  */
1276 # if @REPLACE_PREAD@
1277 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1278 #   undef pread
1279 #   define pread rpl_pread
1280 #  endif
1281 _GL_FUNCDECL_RPL (pread, ssize_t,
1282                   (int fd, void *buf, size_t bufsize, off_t offset)
1283                   _GL_ARG_NONNULL ((2)));
1284 _GL_CXXALIAS_RPL (pread, ssize_t,
1285                   (int fd, void *buf, size_t bufsize, off_t offset));
1286 # else
1287 #  if !@HAVE_PREAD@
1288 _GL_FUNCDECL_SYS (pread, ssize_t,
1289                   (int fd, void *buf, size_t bufsize, off_t offset)
1290                   _GL_ARG_NONNULL ((2)));
1291 #  endif
1292 _GL_CXXALIAS_SYS (pread, ssize_t,
1293                   (int fd, void *buf, size_t bufsize, off_t offset));
1294 # endif
1295 _GL_CXXALIASWARN (pread);
1296 #elif defined GNULIB_POSIXCHECK
1297 # undef pread
1298 # if HAVE_RAW_DECL_PREAD
1299 _GL_WARN_ON_USE (pread, "pread is unportable - "
1300                  "use gnulib module pread for portability");
1301 # endif
1302 #endif
1303
1304
1305 #if @GNULIB_PWRITE@
1306 /* Write at most BUFSIZE bytes from BUF into FD, starting at OFFSET.
1307    Return the number of bytes written if successful, otherwise
1308    set errno and return -1.  0 indicates nothing written.  See the
1309    POSIX:2008 specification
1310    <https://pubs.opengroup.org/onlinepubs/9699919799/functions/pwrite.html>.  */
1311 # if @REPLACE_PWRITE@
1312 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1313 #   undef pwrite
1314 #   define pwrite rpl_pwrite
1315 #  endif
1316 _GL_FUNCDECL_RPL (pwrite, ssize_t,
1317                   (int fd, const void *buf, size_t bufsize, off_t offset)
1318                   _GL_ARG_NONNULL ((2)));
1319 _GL_CXXALIAS_RPL (pwrite, ssize_t,
1320                   (int fd, const void *buf, size_t bufsize, off_t offset));
1321 # else
1322 #  if !@HAVE_PWRITE@
1323 _GL_FUNCDECL_SYS (pwrite, ssize_t,
1324                   (int fd, const void *buf, size_t bufsize, off_t offset)
1325                   _GL_ARG_NONNULL ((2)));
1326 #  endif
1327 _GL_CXXALIAS_SYS (pwrite, ssize_t,
1328                   (int fd, const void *buf, size_t bufsize, off_t offset));
1329 # endif
1330 _GL_CXXALIASWARN (pwrite);
1331 #elif defined GNULIB_POSIXCHECK
1332 # undef pwrite
1333 # if HAVE_RAW_DECL_PWRITE
1334 _GL_WARN_ON_USE (pwrite, "pwrite is unportable - "
1335                  "use gnulib module pwrite for portability");
1336 # endif
1337 #endif
1338
1339
1340 #if @GNULIB_READ@
1341 /* Read up to COUNT bytes from file descriptor FD into the buffer starting
1342    at BUF.  See the POSIX:2008 specification
1343    <https://pubs.opengroup.org/onlinepubs/9699919799/functions/read.html>.  */
1344 # if @REPLACE_READ@
1345 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1346 #   undef read
1347 #   define read rpl_read
1348 #  endif
1349 _GL_FUNCDECL_RPL (read, ssize_t, (int fd, void *buf, size_t count)
1350                                  _GL_ARG_NONNULL ((2)));
1351 _GL_CXXALIAS_RPL (read, ssize_t, (int fd, void *buf, size_t count));
1352 # else
1353 /* Need to cast, because on mingw, the third parameter is
1354                                                           unsigned int count
1355    and the return type is 'int'.  */
1356 _GL_CXXALIAS_SYS_CAST (read, ssize_t, (int fd, void *buf, size_t count));
1357 # endif
1358 _GL_CXXALIASWARN (read);
1359 #endif
1360
1361
1362 #if @GNULIB_READLINK@
1363 /* Read the contents of the symbolic link FILE and place the first BUFSIZE
1364    bytes of it into BUF.  Return the number of bytes placed into BUF if
1365    successful, otherwise -1 and errno set.
1366    See the POSIX:2008 specification
1367    <https://pubs.opengroup.org/onlinepubs/9699919799/functions/readlink.html>.  */
1368 # if @REPLACE_READLINK@
1369 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1370 #   define readlink rpl_readlink
1371 #  endif
1372 _GL_FUNCDECL_RPL (readlink, ssize_t,
1373                   (const char *file, char *buf, size_t bufsize)
1374                   _GL_ARG_NONNULL ((1, 2)));
1375 _GL_CXXALIAS_RPL (readlink, ssize_t,
1376                   (const char *file, char *buf, size_t bufsize));
1377 # else
1378 #  if !@HAVE_READLINK@
1379 _GL_FUNCDECL_SYS (readlink, ssize_t,
1380                   (const char *file, char *buf, size_t bufsize)
1381                   _GL_ARG_NONNULL ((1, 2)));
1382 #  endif
1383 _GL_CXXALIAS_SYS (readlink, ssize_t,
1384                   (const char *file, char *buf, size_t bufsize));
1385 # endif
1386 _GL_CXXALIASWARN (readlink);
1387 #elif defined GNULIB_POSIXCHECK
1388 # undef readlink
1389 # if HAVE_RAW_DECL_READLINK
1390 _GL_WARN_ON_USE (readlink, "readlink is unportable - "
1391                  "use gnulib module readlink for portability");
1392 # endif
1393 #endif
1394
1395
1396 #if @GNULIB_READLINKAT@
1397 # if @REPLACE_READLINKAT@
1398 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1399 #   define readlinkat rpl_readlinkat
1400 #  endif
1401 _GL_FUNCDECL_RPL (readlinkat, ssize_t,
1402                   (int fd, char const *file, char *buf, size_t len)
1403                   _GL_ARG_NONNULL ((2, 3)));
1404 _GL_CXXALIAS_RPL (readlinkat, ssize_t,
1405                   (int fd, char const *file, char *buf, size_t len));
1406 # else
1407 #  if !@HAVE_READLINKAT@
1408 _GL_FUNCDECL_SYS (readlinkat, ssize_t,
1409                   (int fd, char const *file, char *buf, size_t len)
1410                   _GL_ARG_NONNULL ((2, 3)));
1411 #  endif
1412 _GL_CXXALIAS_SYS (readlinkat, ssize_t,
1413                   (int fd, char const *file, char *buf, size_t len));
1414 # endif
1415 _GL_CXXALIASWARN (readlinkat);
1416 #elif defined GNULIB_POSIXCHECK
1417 # undef readlinkat
1418 # if HAVE_RAW_DECL_READLINKAT
1419 _GL_WARN_ON_USE (readlinkat, "readlinkat is not portable - "
1420                  "use gnulib module readlinkat for portability");
1421 # endif
1422 #endif
1423
1424
1425 #if @GNULIB_RMDIR@
1426 /* Remove the directory DIR.  */
1427 # if @REPLACE_RMDIR@
1428 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1429 #   define rmdir rpl_rmdir
1430 #  endif
1431 _GL_FUNCDECL_RPL (rmdir, int, (char const *name) _GL_ARG_NONNULL ((1)));
1432 _GL_CXXALIAS_RPL (rmdir, int, (char const *name));
1433 # else
1434 _GL_CXXALIAS_SYS (rmdir, int, (char const *name));
1435 # endif
1436 _GL_CXXALIASWARN (rmdir);
1437 #elif defined GNULIB_POSIXCHECK
1438 # undef rmdir
1439 # if HAVE_RAW_DECL_RMDIR
1440 _GL_WARN_ON_USE (rmdir, "rmdir is unportable - "
1441                  "use gnulib module rmdir for portability");
1442 # endif
1443 #endif
1444
1445
1446 #if @GNULIB_SETHOSTNAME@
1447 /* Set the host name of the machine.
1448    The host name may or may not be fully qualified.
1449
1450    Put LEN bytes of NAME into the host name.
1451    Return 0 if successful, otherwise, set errno and return -1.
1452
1453    Platforms with no ability to set the hostname return -1 and set
1454    errno = ENOSYS.  */
1455 # if !@HAVE_SETHOSTNAME@ || !@HAVE_DECL_SETHOSTNAME@
1456 _GL_FUNCDECL_SYS (sethostname, int, (const char *name, size_t len)
1457                                     _GL_ARG_NONNULL ((1)));
1458 # endif
1459 /* Need to cast, because on Solaris 11 2011-10, Mac OS X 10.5, IRIX 6.5
1460    and FreeBSD 6.4 the second parameter is int.  On Solaris 11
1461    2011-10, the first parameter is not const.  */
1462 _GL_CXXALIAS_SYS_CAST (sethostname, int, (const char *name, size_t len));
1463 _GL_CXXALIASWARN (sethostname);
1464 #elif defined GNULIB_POSIXCHECK
1465 # undef sethostname
1466 # if HAVE_RAW_DECL_SETHOSTNAME
1467 _GL_WARN_ON_USE (sethostname, "sethostname is unportable - "
1468                  "use gnulib module sethostname for portability");
1469 # endif
1470 #endif
1471
1472
1473 #if @GNULIB_SLEEP@
1474 /* Pause the execution of the current thread for N seconds.
1475    Returns the number of seconds left to sleep.
1476    See the POSIX:2008 specification
1477    <https://pubs.opengroup.org/onlinepubs/9699919799/functions/sleep.html>.  */
1478 # if @REPLACE_SLEEP@
1479 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1480 #   undef sleep
1481 #   define sleep rpl_sleep
1482 #  endif
1483 _GL_FUNCDECL_RPL (sleep, unsigned int, (unsigned int n));
1484 _GL_CXXALIAS_RPL (sleep, unsigned int, (unsigned int n));
1485 # else
1486 #  if !@HAVE_SLEEP@
1487 _GL_FUNCDECL_SYS (sleep, unsigned int, (unsigned int n));
1488 #  endif
1489 _GL_CXXALIAS_SYS (sleep, unsigned int, (unsigned int n));
1490 # endif
1491 _GL_CXXALIASWARN (sleep);
1492 #elif defined GNULIB_POSIXCHECK
1493 # undef sleep
1494 # if HAVE_RAW_DECL_SLEEP
1495 _GL_WARN_ON_USE (sleep, "sleep is unportable - "
1496                  "use gnulib module sleep for portability");
1497 # endif
1498 #endif
1499
1500
1501 #if @GNULIB_SYMLINK@
1502 # if @REPLACE_SYMLINK@
1503 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1504 #   undef symlink
1505 #   define symlink rpl_symlink
1506 #  endif
1507 _GL_FUNCDECL_RPL (symlink, int, (char const *contents, char const *file)
1508                                 _GL_ARG_NONNULL ((1, 2)));
1509 _GL_CXXALIAS_RPL (symlink, int, (char const *contents, char const *file));
1510 # else
1511 #  if !@HAVE_SYMLINK@
1512 _GL_FUNCDECL_SYS (symlink, int, (char const *contents, char const *file)
1513                                 _GL_ARG_NONNULL ((1, 2)));
1514 #  endif
1515 _GL_CXXALIAS_SYS (symlink, int, (char const *contents, char const *file));
1516 # endif
1517 _GL_CXXALIASWARN (symlink);
1518 #elif defined GNULIB_POSIXCHECK
1519 # undef symlink
1520 # if HAVE_RAW_DECL_SYMLINK
1521 _GL_WARN_ON_USE (symlink, "symlink is not portable - "
1522                  "use gnulib module symlink for portability");
1523 # endif
1524 #endif
1525
1526
1527 #if @GNULIB_SYMLINKAT@
1528 # if @REPLACE_SYMLINKAT@
1529 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1530 #   undef symlinkat
1531 #   define symlinkat rpl_symlinkat
1532 #  endif
1533 _GL_FUNCDECL_RPL (symlinkat, int,
1534                   (char const *contents, int fd, char const *file)
1535                   _GL_ARG_NONNULL ((1, 3)));
1536 _GL_CXXALIAS_RPL (symlinkat, int,
1537                   (char const *contents, int fd, char const *file));
1538 # else
1539 #  if !@HAVE_SYMLINKAT@
1540 _GL_FUNCDECL_SYS (symlinkat, int,
1541                   (char const *contents, int fd, char const *file)
1542                   _GL_ARG_NONNULL ((1, 3)));
1543 #  endif
1544 _GL_CXXALIAS_SYS (symlinkat, int,
1545                   (char const *contents, int fd, char const *file));
1546 # endif
1547 _GL_CXXALIASWARN (symlinkat);
1548 #elif defined GNULIB_POSIXCHECK
1549 # undef symlinkat
1550 # if HAVE_RAW_DECL_SYMLINKAT
1551 _GL_WARN_ON_USE (symlinkat, "symlinkat is not portable - "
1552                  "use gnulib module symlinkat for portability");
1553 # endif
1554 #endif
1555
1556
1557 #if @GNULIB_TRUNCATE@
1558 /* Change the size of the file designated by FILENAME to become equal to LENGTH.
1559    Return 0 if successful, otherwise -1 and errno set.
1560    See the POSIX:2008 specification
1561    <https://pubs.opengroup.org/onlinepubs/9699919799/functions/truncate.html>.  */
1562 # if @REPLACE_TRUNCATE@
1563 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1564 #   undef truncate
1565 #   define truncate rpl_truncate
1566 #  endif
1567 _GL_FUNCDECL_RPL (truncate, int, (const char *filename, off_t length)
1568                                  _GL_ARG_NONNULL ((1)));
1569 _GL_CXXALIAS_RPL (truncate, int, (const char *filename, off_t length));
1570 # else
1571 #  if !@HAVE_DECL_TRUNCATE@
1572 _GL_FUNCDECL_SYS (truncate, int, (const char *filename, off_t length)
1573                                  _GL_ARG_NONNULL ((1)));
1574 #  endif
1575 _GL_CXXALIAS_SYS (truncate, int, (const char *filename, off_t length));
1576 # endif
1577 _GL_CXXALIASWARN (truncate);
1578 #elif defined GNULIB_POSIXCHECK
1579 # undef truncate
1580 # if HAVE_RAW_DECL_TRUNCATE
1581 _GL_WARN_ON_USE (truncate, "truncate is unportable - "
1582                  "use gnulib module truncate for portability");
1583 # endif
1584 #endif
1585
1586
1587 #if @GNULIB_TTYNAME_R@
1588 /* Store at most BUFLEN characters of the pathname of the terminal FD is
1589    open on in BUF.  Return 0 on success, otherwise an error number.  */
1590 # if @REPLACE_TTYNAME_R@
1591 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1592 #   undef ttyname_r
1593 #   define ttyname_r rpl_ttyname_r
1594 #  endif
1595 _GL_FUNCDECL_RPL (ttyname_r, int,
1596                   (int fd, char *buf, size_t buflen) _GL_ARG_NONNULL ((2)));
1597 _GL_CXXALIAS_RPL (ttyname_r, int,
1598                   (int fd, char *buf, size_t buflen));
1599 # else
1600 #  if !@HAVE_DECL_TTYNAME_R@
1601 _GL_FUNCDECL_SYS (ttyname_r, int,
1602                   (int fd, char *buf, size_t buflen) _GL_ARG_NONNULL ((2)));
1603 #  endif
1604 _GL_CXXALIAS_SYS (ttyname_r, int,
1605                   (int fd, char *buf, size_t buflen));
1606 # endif
1607 _GL_CXXALIASWARN (ttyname_r);
1608 #elif defined GNULIB_POSIXCHECK
1609 # undef ttyname_r
1610 # if HAVE_RAW_DECL_TTYNAME_R
1611 _GL_WARN_ON_USE (ttyname_r, "ttyname_r is not portable - "
1612                  "use gnulib module ttyname_r for portability");
1613 # endif
1614 #endif
1615
1616
1617 #if @GNULIB_UNLINK@
1618 # if @REPLACE_UNLINK@
1619 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1620 #   undef unlink
1621 #   define unlink rpl_unlink
1622 #  endif
1623 _GL_FUNCDECL_RPL (unlink, int, (char const *file) _GL_ARG_NONNULL ((1)));
1624 _GL_CXXALIAS_RPL (unlink, int, (char const *file));
1625 # else
1626 _GL_CXXALIAS_SYS (unlink, int, (char const *file));
1627 # endif
1628 _GL_CXXALIASWARN (unlink);
1629 #elif defined GNULIB_POSIXCHECK
1630 # undef unlink
1631 # if HAVE_RAW_DECL_UNLINK
1632 _GL_WARN_ON_USE (unlink, "unlink is not portable - "
1633                  "use gnulib module unlink for portability");
1634 # endif
1635 #endif
1636
1637
1638 #if @GNULIB_UNLINKAT@
1639 # if @REPLACE_UNLINKAT@
1640 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1641 #   undef unlinkat
1642 #   define unlinkat rpl_unlinkat
1643 #  endif
1644 _GL_FUNCDECL_RPL (unlinkat, int, (int fd, char const *file, int flag)
1645                                  _GL_ARG_NONNULL ((2)));
1646 _GL_CXXALIAS_RPL (unlinkat, int, (int fd, char const *file, int flag));
1647 # else
1648 #  if !@HAVE_UNLINKAT@
1649 _GL_FUNCDECL_SYS (unlinkat, int, (int fd, char const *file, int flag)
1650                                  _GL_ARG_NONNULL ((2)));
1651 #  endif
1652 _GL_CXXALIAS_SYS (unlinkat, int, (int fd, char const *file, int flag));
1653 # endif
1654 _GL_CXXALIASWARN (unlinkat);
1655 #elif defined GNULIB_POSIXCHECK
1656 # undef unlinkat
1657 # if HAVE_RAW_DECL_UNLINKAT
1658 _GL_WARN_ON_USE (unlinkat, "unlinkat is not portable - "
1659                  "use gnulib module openat for portability");
1660 # endif
1661 #endif
1662
1663
1664 #if @GNULIB_USLEEP@
1665 /* Pause the execution of the current thread for N microseconds.
1666    Returns 0 on completion, or -1 on range error.
1667    See the POSIX:2001 specification
1668    <https://pubs.opengroup.org/onlinepubs/009695399/functions/usleep.html>.  */
1669 # if @REPLACE_USLEEP@
1670 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1671 #   undef usleep
1672 #   define usleep rpl_usleep
1673 #  endif
1674 _GL_FUNCDECL_RPL (usleep, int, (useconds_t n));
1675 _GL_CXXALIAS_RPL (usleep, int, (useconds_t n));
1676 # else
1677 #  if !@HAVE_USLEEP@
1678 _GL_FUNCDECL_SYS (usleep, int, (useconds_t n));
1679 #  endif
1680 /* Need to cast, because on Haiku, the first parameter is
1681                                      unsigned int n.  */
1682 _GL_CXXALIAS_SYS_CAST (usleep, int, (useconds_t n));
1683 # endif
1684 _GL_CXXALIASWARN (usleep);
1685 #elif defined GNULIB_POSIXCHECK
1686 # undef usleep
1687 # if HAVE_RAW_DECL_USLEEP
1688 _GL_WARN_ON_USE (usleep, "usleep is unportable - "
1689                  "use gnulib module usleep for portability");
1690 # endif
1691 #endif
1692
1693
1694 #if @GNULIB_WRITE@
1695 /* Write up to COUNT bytes starting at BUF to file descriptor FD.
1696    See the POSIX:2008 specification
1697    <https://pubs.opengroup.org/onlinepubs/9699919799/functions/write.html>.  */
1698 # if @REPLACE_WRITE@
1699 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1700 #   undef write
1701 #   define write rpl_write
1702 #  endif
1703 _GL_FUNCDECL_RPL (write, ssize_t, (int fd, const void *buf, size_t count)
1704                                   _GL_ARG_NONNULL ((2)));
1705 _GL_CXXALIAS_RPL (write, ssize_t, (int fd, const void *buf, size_t count));
1706 # else
1707 /* Need to cast, because on mingw, the third parameter is
1708                                                              unsigned int count
1709    and the return type is 'int'.  */
1710 _GL_CXXALIAS_SYS_CAST (write, ssize_t, (int fd, const void *buf, size_t count));
1711 # endif
1712 _GL_CXXALIASWARN (write);
1713 #endif
1714
1715 _GL_INLINE_HEADER_END
1716
1717 #endif /* _@GUARD_PREFIX@_UNISTD_H */
1718 #endif /* _GL_INCLUDING_UNISTD_H */
1719 #endif /* _@GUARD_PREFIX@_UNISTD_H */