unistd.in.h 54.2 KB
Newer Older
Paul Eggert's avatar
Paul Eggert committed
1
/* Substitute for and wrapper around <unistd.h>.
Paul Eggert's avatar
Paul Eggert committed
2
   Copyright (C) 2003-2017 Free Software Foundation, Inc.
Paul Eggert's avatar
Paul Eggert committed
3 4 5 6 7 8 9 10 11 12 13 14

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
Paul Eggert's avatar
Paul Eggert committed
15
   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
Paul Eggert's avatar
Paul Eggert committed
16

Paul Eggert's avatar
Paul Eggert committed
17 18
#ifndef _@GUARD_PREFIX@_UNISTD_H

Paul Eggert's avatar
Paul Eggert committed
19 20 21 22 23
#if __GNUC__ >= 3
@PRAGMA_SYSTEM_HEADER@
#endif
@PRAGMA_COLUMNS@

Paul Eggert's avatar
Paul Eggert committed
24 25 26 27 28 29 30 31 32 33 34 35
#ifdef _GL_INCLUDING_UNISTD_H
/* Special invocation convention:
   - On Mac OS X 10.3.9 we have a sequence of nested includes
     <unistd.h> -> <signal.h> -> <pthread.h> -> <unistd.h>
     In this situation, the functions are not yet declared, therefore we cannot
     provide the C++ aliases.  */

#@INCLUDE_NEXT@ @NEXT_UNISTD_H@

#else
/* Normal invocation convention.  */

Paul Eggert's avatar
Paul Eggert committed
36 37
/* The include_next requires a split double-inclusion guard.  */
#if @HAVE_UNISTD_H@
Paul Eggert's avatar
Paul Eggert committed
38
# define _GL_INCLUDING_UNISTD_H
Paul Eggert's avatar
Paul Eggert committed
39
# @INCLUDE_NEXT@ @NEXT_UNISTD_H@
Paul Eggert's avatar
Paul Eggert committed
40
# undef _GL_INCLUDING_UNISTD_H
Paul Eggert's avatar
Paul Eggert committed
41 42 43 44
#endif

/* Get all possible declarations of gethostname().  */
#if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@ \
Paul Eggert's avatar
Paul Eggert committed
45 46
  && !defined _GL_INCLUDING_WINSOCK2_H
# define _GL_INCLUDING_WINSOCK2_H
Paul Eggert's avatar
Paul Eggert committed
47
# include <winsock2.h>
Paul Eggert's avatar
Paul Eggert committed
48
# undef _GL_INCLUDING_WINSOCK2_H
Paul Eggert's avatar
Paul Eggert committed
49 50
#endif

51 52
#if !defined _@GUARD_PREFIX@_UNISTD_H && !defined _GL_INCLUDING_WINSOCK2_H
#define _@GUARD_PREFIX@_UNISTD_H
Paul Eggert's avatar
Paul Eggert committed
53 54 55 56 57

/* NetBSD 5.0 mis-defines NULL.  Also get size_t.  */
#include <stddef.h>

/* mingw doesn't define the SEEK_* or *_FILENO macros in <unistd.h>.  */
Paul Eggert's avatar
Paul Eggert committed
58 59
/* MSVC declares 'unlink' in <stdio.h>, not in <unistd.h>.  We must include
   it before we  #define unlink rpl_unlink.  */
Paul Eggert's avatar
Paul Eggert committed
60 61 62
/* Cygwin 1.7.1 declares symlinkat in <stdio.h>, not in <unistd.h>.  */
/* But avoid namespace pollution on glibc systems.  */
#if (!(defined SEEK_CUR && defined SEEK_END && defined SEEK_SET) \
Paul Eggert's avatar
Paul Eggert committed
63 64
     || ((@GNULIB_UNLINK@ || defined GNULIB_POSIXCHECK) \
         && ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__)) \
Paul Eggert's avatar
Paul Eggert committed
65 66 67 68 69 70 71 72 73 74 75 76 77 78
     || ((@GNULIB_SYMLINKAT@ || defined GNULIB_POSIXCHECK) \
         && defined __CYGWIN__)) \
    && ! defined __GLIBC__
# include <stdio.h>
#endif

/* Cygwin 1.7.1 declares unlinkat in <fcntl.h>, not in <unistd.h>.  */
/* But avoid namespace pollution on glibc systems.  */
#if (@GNULIB_UNLINKAT@ || defined GNULIB_POSIXCHECK) && defined __CYGWIN__ \
    && ! defined __GLIBC__
# include <fcntl.h>
#endif

/* mingw fails to declare _exit in <unistd.h>.  */
79 80
/* mingw, MSVC, BeOS, Haiku declare environ in <stdlib.h>, not in
   <unistd.h>.  */
Paul Eggert's avatar
Paul Eggert committed
81
/* Solaris declares getcwd not only in <unistd.h> but also in <stdlib.h>.  */
Paul Eggert's avatar
Paul Eggert committed
82 83
/* OSF Tru64 Unix cannot see gnulib rpl_strtod when system <stdlib.h> is
   included here.  */
Paul Eggert's avatar
Paul Eggert committed
84
/* But avoid namespace pollution on glibc systems.  */
Paul Eggert's avatar
Paul Eggert committed
85
#if !defined __GLIBC__ && !defined __osf__
Paul Eggert's avatar
Paul Eggert committed
86
# define __need_system_stdlib_h
Paul Eggert's avatar
Paul Eggert committed
87
# include <stdlib.h>
Paul Eggert's avatar
Paul Eggert committed
88
# undef __need_system_stdlib_h
Paul Eggert's avatar
Paul Eggert committed
89 90
#endif

91
/* Native Windows platforms declare chdir, getcwd, rmdir in
Paul Eggert's avatar
Paul Eggert committed
92 93 94
   <io.h> and/or <direct.h>, not in <unistd.h>.
   They also declare access(), chmod(), close(), dup(), dup2(), isatty(),
   lseek(), read(), unlink(), write() in <io.h>.  */
95 96
#if ((@GNULIB_CHDIR@ || @GNULIB_GETCWD@ || @GNULIB_RMDIR@ \
      || defined GNULIB_POSIXCHECK) \
Paul Eggert's avatar
Paul Eggert committed
97
     && ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__))
Paul Eggert's avatar
Paul Eggert committed
98
# include <io.h>     /* mingw32, mingw64 */
99
# include <direct.h> /* mingw64, MSVC 9 */
Paul Eggert's avatar
Paul Eggert committed
100 101 102 103 104
#elif (@GNULIB_CLOSE@ || @GNULIB_DUP@ || @GNULIB_DUP2@ || @GNULIB_ISATTY@ \
       || @GNULIB_LSEEK@ || @GNULIB_READ@ || @GNULIB_UNLINK@ || @GNULIB_WRITE@ \
       || defined GNULIB_POSIXCHECK) \
      && ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__)
# include <io.h>
Paul Eggert's avatar
Paul Eggert committed
105 106 107 108 109 110 111 112 113 114 115
#endif

/* AIX and OSF/1 5.1 declare getdomainname in <netdb.h>, not in <unistd.h>.
   NonStop Kernel declares gethostname in <netdb.h>, not in <unistd.h>.  */
/* But avoid namespace pollution on glibc systems.  */
#if ((@GNULIB_GETDOMAINNAME@ && (defined _AIX || defined __osf__)) \
     || (@GNULIB_GETHOSTNAME@ && defined __TANDEM)) \
    && !defined __GLIBC__
# include <netdb.h>
#endif

Paul Eggert's avatar
Paul Eggert committed
116 117 118
/* MSVC defines off_t in <sys/types.h>.
   May also define off_t to a 64-bit type on native Windows.  */
#if !@HAVE_UNISTD_H@ || @WINDOWS_64_BIT_OFF_T@
119 120 121 122
/* Get off_t.  */
# include <sys/types.h>
#endif

Paul Eggert's avatar
Paul Eggert committed
123 124
#if (@GNULIB_READ@ || @GNULIB_WRITE@ \
     || @GNULIB_READLINK@ || @GNULIB_READLINKAT@ \
Paul Eggert's avatar
Paul Eggert committed
125 126 127 128 129
     || @GNULIB_PREAD@ || @GNULIB_PWRITE@ || defined GNULIB_POSIXCHECK)
/* Get ssize_t.  */
# include <sys/types.h>
#endif

Paul Eggert's avatar
Paul Eggert committed
130 131 132 133 134 135 136
/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */

/* The definition of _GL_ARG_NONNULL is copied here.  */

/* The definition of _GL_WARN_ON_USE is copied here.  */


Paul Eggert's avatar
Paul Eggert committed
137 138
/* Get getopt(), optarg, optind, opterr, optopt.  */
#if @GNULIB_UNISTD_H_GETOPT@ && !defined _GL_SYSTEM_GETOPT
Paul Eggert's avatar
Paul Eggert committed
139 140
# include <getopt-cdefs.h>
# include <getopt-pfx-core.h>
Paul Eggert's avatar
Paul Eggert committed
141 142
#endif

Paul Eggert's avatar
Paul Eggert committed
143 144 145
#ifndef _GL_INLINE_HEADER_BEGIN
 #error "Please include config.h first."
#endif
Paul Eggert's avatar
Paul Eggert committed
146 147 148 149 150
_GL_INLINE_HEADER_BEGIN
#ifndef _GL_UNISTD_INLINE
# define _GL_UNISTD_INLINE _GL_INLINE
#endif

151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212
/* Hide some function declarations from <winsock2.h>.  */

#if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@
# if !defined _@GUARD_PREFIX@_SYS_SOCKET_H
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef socket
#   define socket              socket_used_without_including_sys_socket_h
#   undef connect
#   define connect             connect_used_without_including_sys_socket_h
#   undef accept
#   define accept              accept_used_without_including_sys_socket_h
#   undef bind
#   define bind                bind_used_without_including_sys_socket_h
#   undef getpeername
#   define getpeername         getpeername_used_without_including_sys_socket_h
#   undef getsockname
#   define getsockname         getsockname_used_without_including_sys_socket_h
#   undef getsockopt
#   define getsockopt          getsockopt_used_without_including_sys_socket_h
#   undef listen
#   define listen              listen_used_without_including_sys_socket_h
#   undef recv
#   define recv                recv_used_without_including_sys_socket_h
#   undef send
#   define send                send_used_without_including_sys_socket_h
#   undef recvfrom
#   define recvfrom            recvfrom_used_without_including_sys_socket_h
#   undef sendto
#   define sendto              sendto_used_without_including_sys_socket_h
#   undef setsockopt
#   define setsockopt          setsockopt_used_without_including_sys_socket_h
#   undef shutdown
#   define shutdown            shutdown_used_without_including_sys_socket_h
#  else
    _GL_WARN_ON_USE (socket,
                     "socket() used without including <sys/socket.h>");
    _GL_WARN_ON_USE (connect,
                     "connect() used without including <sys/socket.h>");
    _GL_WARN_ON_USE (accept,
                     "accept() used without including <sys/socket.h>");
    _GL_WARN_ON_USE (bind,
                     "bind() used without including <sys/socket.h>");
    _GL_WARN_ON_USE (getpeername,
                     "getpeername() used without including <sys/socket.h>");
    _GL_WARN_ON_USE (getsockname,
                     "getsockname() used without including <sys/socket.h>");
    _GL_WARN_ON_USE (getsockopt,
                     "getsockopt() used without including <sys/socket.h>");
    _GL_WARN_ON_USE (listen,
                     "listen() used without including <sys/socket.h>");
    _GL_WARN_ON_USE (recv,
                     "recv() used without including <sys/socket.h>");
    _GL_WARN_ON_USE (send,
                     "send() used without including <sys/socket.h>");
    _GL_WARN_ON_USE (recvfrom,
                     "recvfrom() used without including <sys/socket.h>");
    _GL_WARN_ON_USE (sendto,
                     "sendto() used without including <sys/socket.h>");
    _GL_WARN_ON_USE (setsockopt,
                     "setsockopt() used without including <sys/socket.h>");
    _GL_WARN_ON_USE (shutdown,
                     "shutdown() used without including <sys/socket.h>");
Paul Eggert's avatar
Paul Eggert committed
213
#  endif
214 215 216 217 218 219 220 221
# endif
# if !defined _@GUARD_PREFIX@_SYS_SELECT_H
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef select
#   define select              select_used_without_including_sys_select_h
#  else
    _GL_WARN_ON_USE (select,
                     "select() used without including <sys/select.h>");
Paul Eggert's avatar
Paul Eggert committed
222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256
#  endif
# endif
#endif


/* OS/2 EMX lacks these macros.  */
#ifndef STDIN_FILENO
# define STDIN_FILENO 0
#endif
#ifndef STDOUT_FILENO
# define STDOUT_FILENO 1
#endif
#ifndef STDERR_FILENO
# define STDERR_FILENO 2
#endif

/* Ensure *_OK macros exist.  */
#ifndef F_OK
# define F_OK 0
# define X_OK 1
# define W_OK 2
# define R_OK 4
#endif


/* Declare overridden functions.  */


#if defined GNULIB_POSIXCHECK
/* The access() function is a security risk.  */
_GL_WARN_ON_USE (access, "the access function is a security risk - "
                 "use the gnulib module faccessat instead");
#endif


257 258 259 260 261 262 263 264 265 266 267 268
#if @GNULIB_CHDIR@
_GL_CXXALIAS_SYS (chdir, int, (const char *file) _GL_ARG_NONNULL ((1)));
_GL_CXXALIASWARN (chdir);
#elif defined GNULIB_POSIXCHECK
# undef chdir
# if HAVE_RAW_DECL_CHDIR
_GL_WARN_ON_USE (chown, "chdir is not always in <unistd.h> - "
                 "use gnulib module chdir for portability");
# endif
#endif


Paul Eggert's avatar
Paul Eggert committed
269 270 271 272
#if @GNULIB_CHOWN@
/* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
   to GID (if GID is not -1).  Follow symbolic links.
   Return 0 if successful, otherwise -1 and errno set.
273 274
   See the POSIX:2008 specification
   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/chown.html.  */
Paul Eggert's avatar
Paul Eggert committed
275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324
# if @REPLACE_CHOWN@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef chown
#   define chown rpl_chown
#  endif
_GL_FUNCDECL_RPL (chown, int, (const char *file, uid_t uid, gid_t gid)
                              _GL_ARG_NONNULL ((1)));
_GL_CXXALIAS_RPL (chown, int, (const char *file, uid_t uid, gid_t gid));
# else
#  if !@HAVE_CHOWN@
_GL_FUNCDECL_SYS (chown, int, (const char *file, uid_t uid, gid_t gid)
                              _GL_ARG_NONNULL ((1)));
#  endif
_GL_CXXALIAS_SYS (chown, int, (const char *file, uid_t uid, gid_t gid));
# endif
_GL_CXXALIASWARN (chown);
#elif defined GNULIB_POSIXCHECK
# undef chown
# if HAVE_RAW_DECL_CHOWN
_GL_WARN_ON_USE (chown, "chown fails to follow symlinks on some systems and "
                 "doesn't treat a uid or gid of -1 on some systems - "
                 "use gnulib module chown for portability");
# endif
#endif


#if @GNULIB_CLOSE@
# if @REPLACE_CLOSE@
/* Automatically included by modules that need a replacement for close.  */
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef close
#   define close rpl_close
#  endif
_GL_FUNCDECL_RPL (close, int, (int fd));
_GL_CXXALIAS_RPL (close, int, (int fd));
# else
_GL_CXXALIAS_SYS (close, int, (int fd));
# endif
_GL_CXXALIASWARN (close);
#elif @UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@
# undef close
# define close close_used_without_requesting_gnulib_module_close
#elif defined GNULIB_POSIXCHECK
# undef close
/* Assume close is always declared.  */
_GL_WARN_ON_USE (close, "close does not portably work on sockets - "
                 "use gnulib module close for portability");
#endif


325 326 327 328 329
#if @GNULIB_DUP@
# if @REPLACE_DUP@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   define dup rpl_dup
#  endif
Paul Eggert's avatar
Paul Eggert committed
330 331
_GL_FUNCDECL_RPL (dup, int, (int oldfd));
_GL_CXXALIAS_RPL (dup, int, (int oldfd));
332
# else
Paul Eggert's avatar
Paul Eggert committed
333
_GL_CXXALIAS_SYS (dup, int, (int oldfd));
334
# endif
Paul Eggert's avatar
Paul Eggert committed
335
_GL_CXXALIASWARN (dup);
336 337 338 339 340 341 342
#elif defined GNULIB_POSIXCHECK
# undef dup
# if HAVE_RAW_DECL_DUP
_GL_WARN_ON_USE (dup, "dup is unportable - "
                 "use gnulib module dup for portability");
# endif
#endif
Paul Eggert's avatar
Paul Eggert committed
343 344 345 346 347 348


#if @GNULIB_DUP2@
/* Copy the file descriptor OLDFD into file descriptor NEWFD.  Do nothing if
   NEWFD = OLDFD, otherwise close NEWFD first if it is open.
   Return newfd if successful, otherwise -1 and errno set.
349 350
   See the POSIX:2008 specification
   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/dup2.html>.  */
Paul Eggert's avatar
Paul Eggert committed
351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380
# if @REPLACE_DUP2@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   define dup2 rpl_dup2
#  endif
_GL_FUNCDECL_RPL (dup2, int, (int oldfd, int newfd));
_GL_CXXALIAS_RPL (dup2, int, (int oldfd, int newfd));
# else
#  if !@HAVE_DUP2@
_GL_FUNCDECL_SYS (dup2, int, (int oldfd, int newfd));
#  endif
_GL_CXXALIAS_SYS (dup2, int, (int oldfd, int newfd));
# endif
_GL_CXXALIASWARN (dup2);
#elif defined GNULIB_POSIXCHECK
# undef dup2
# if HAVE_RAW_DECL_DUP2
_GL_WARN_ON_USE (dup2, "dup2 is unportable - "
                 "use gnulib module dup2 for portability");
# endif
#endif


#if @GNULIB_DUP3@
/* Copy the file descriptor OLDFD into file descriptor NEWFD, with the
   specified flags.
   The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
   and O_TEXT, O_BINARY (defined in "binary-io.h").
   Close NEWFD first if it is open.
   Return newfd if successful, otherwise -1 and errno set.
   See the Linux man page at
Paul Eggert's avatar
Paul Eggert committed
381
   <https://www.kernel.org/doc/man-pages/online/pages/man2/dup3.2.html>.  */
Paul Eggert's avatar
Paul Eggert committed
382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406
# if @HAVE_DUP3@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   define dup3 rpl_dup3
#  endif
_GL_FUNCDECL_RPL (dup3, int, (int oldfd, int newfd, int flags));
_GL_CXXALIAS_RPL (dup3, int, (int oldfd, int newfd, int flags));
# else
_GL_FUNCDECL_SYS (dup3, int, (int oldfd, int newfd, int flags));
_GL_CXXALIAS_SYS (dup3, int, (int oldfd, int newfd, int flags));
# endif
_GL_CXXALIASWARN (dup3);
#elif defined GNULIB_POSIXCHECK
# undef dup3
# if HAVE_RAW_DECL_DUP3
_GL_WARN_ON_USE (dup3, "dup3 is unportable - "
                 "use gnulib module dup3 for portability");
# endif
#endif


#if @GNULIB_ENVIRON@
# if !@HAVE_DECL_ENVIRON@
/* Set of environment variables and values.  An array of strings of the form
   "VARIABLE=VALUE", terminated with a NULL.  */
#  if defined __APPLE__ && defined __MACH__
Paul Eggert's avatar
Paul Eggert committed
407
#   include <TargetConditionals.h>
408
#   if !TARGET_OS_IPHONE && !TARGET_IPHONE_SIMULATOR
Paul Eggert's avatar
Paul Eggert committed
409 410 411 412
#    define _GL_USE_CRT_EXTERNS
#   endif
#  endif
#  ifdef _GL_USE_CRT_EXTERNS
Paul Eggert's avatar
Paul Eggert committed
413 414 415 416 417 418 419 420 421 422 423 424 425 426
#   include <crt_externs.h>
#   define environ (*_NSGetEnviron ())
#  else
#   ifdef __cplusplus
extern "C" {
#   endif
extern char **environ;
#   ifdef __cplusplus
}
#   endif
#  endif
# endif
#elif defined GNULIB_POSIXCHECK
# if HAVE_RAW_DECL_ENVIRON
Paul Eggert's avatar
Paul Eggert committed
427
_GL_UNISTD_INLINE char ***
Paul Eggert's avatar
Paul Eggert committed
428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463
rpl_environ (void)
{
  return &environ;
}
_GL_WARN_ON_USE (rpl_environ, "environ is unportable - "
                 "use gnulib module environ for portability");
#  undef environ
#  define environ (*rpl_environ ())
# endif
#endif


#if @GNULIB_EUIDACCESS@
/* Like access(), except that it uses the effective user id and group id of
   the current process.  */
# if !@HAVE_EUIDACCESS@
_GL_FUNCDECL_SYS (euidaccess, int, (const char *filename, int mode)
                                   _GL_ARG_NONNULL ((1)));
# endif
_GL_CXXALIAS_SYS (euidaccess, int, (const char *filename, int mode));
_GL_CXXALIASWARN (euidaccess);
# if defined GNULIB_POSIXCHECK
/* Like access(), this function is a security risk.  */
_GL_WARN_ON_USE (euidaccess, "the euidaccess function is a security risk - "
                 "use the gnulib module faccessat instead");
# endif
#elif defined GNULIB_POSIXCHECK
# undef euidaccess
# if HAVE_RAW_DECL_EUIDACCESS
_GL_WARN_ON_USE (euidaccess, "euidaccess is unportable - "
                 "use gnulib module euidaccess for portability");
# endif
#endif


#if @GNULIB_FACCESSAT@
Paul Eggert's avatar
Paul Eggert committed
464 465 466 467 468 469 470 471 472 473 474 475
# if @REPLACE_FACCESSAT@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef faccessat
#   define faccessat rpl_faccessat
#  endif
_GL_FUNCDECL_RPL (faccessat, int,
                  (int fd, char const *name, int mode, int flag)
                  _GL_ARG_NONNULL ((2)));
_GL_CXXALIAS_RPL (faccessat, int,
                  (int fd, char const *name, int mode, int flag));
# else
#  if !@HAVE_FACCESSAT@
Paul Eggert's avatar
Paul Eggert committed
476 477 478
_GL_FUNCDECL_SYS (faccessat, int,
                  (int fd, char const *file, int mode, int flag)
                  _GL_ARG_NONNULL ((2)));
Paul Eggert's avatar
Paul Eggert committed
479
#  endif
Paul Eggert's avatar
Paul Eggert committed
480 481
_GL_CXXALIAS_SYS (faccessat, int,
                  (int fd, char const *file, int mode, int flag));
Paul Eggert's avatar
Paul Eggert committed
482
# endif
Paul Eggert's avatar
Paul Eggert committed
483 484 485 486 487 488 489 490 491 492 493 494 495 496
_GL_CXXALIASWARN (faccessat);
#elif defined GNULIB_POSIXCHECK
# undef faccessat
# if HAVE_RAW_DECL_FACCESSAT
_GL_WARN_ON_USE (faccessat, "faccessat is not portable - "
                 "use gnulib module faccessat for portability");
# endif
#endif


#if @GNULIB_FCHDIR@
/* Change the process' current working directory to the directory on which
   the given file descriptor is open.
   Return 0 if successful, otherwise -1 and errno set.
497 498
   See the POSIX:2008 specification
   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/fchdir.html>.  */
Paul Eggert's avatar
Paul Eggert committed
499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554
# if ! @HAVE_FCHDIR@
_GL_FUNCDECL_SYS (fchdir, int, (int /*fd*/));

/* Gnulib internal hooks needed to maintain the fchdir metadata.  */
_GL_EXTERN_C int _gl_register_fd (int fd, const char *filename)
     _GL_ARG_NONNULL ((2));
_GL_EXTERN_C void _gl_unregister_fd (int fd);
_GL_EXTERN_C int _gl_register_dup (int oldfd, int newfd);
_GL_EXTERN_C const char *_gl_directory_name (int fd);

# else
#  if !@HAVE_DECL_FCHDIR@
_GL_FUNCDECL_SYS (fchdir, int, (int /*fd*/));
#  endif
# endif
_GL_CXXALIAS_SYS (fchdir, int, (int /*fd*/));
_GL_CXXALIASWARN (fchdir);
#elif defined GNULIB_POSIXCHECK
# undef fchdir
# if HAVE_RAW_DECL_FCHDIR
_GL_WARN_ON_USE (fchdir, "fchdir is unportable - "
                 "use gnulib module fchdir for portability");
# endif
#endif


#if @GNULIB_FCHOWNAT@
# if @REPLACE_FCHOWNAT@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef fchownat
#   define fchownat rpl_fchownat
#  endif
_GL_FUNCDECL_RPL (fchownat, int, (int fd, char const *file,
                                  uid_t owner, gid_t group, int flag)
                                 _GL_ARG_NONNULL ((2)));
_GL_CXXALIAS_RPL (fchownat, int, (int fd, char const *file,
                                  uid_t owner, gid_t group, int flag));
# else
#  if !@HAVE_FCHOWNAT@
_GL_FUNCDECL_SYS (fchownat, int, (int fd, char const *file,
                                  uid_t owner, gid_t group, int flag)
                                 _GL_ARG_NONNULL ((2)));
#  endif
_GL_CXXALIAS_SYS (fchownat, int, (int fd, char const *file,
                                  uid_t owner, gid_t group, int flag));
# endif
_GL_CXXALIASWARN (fchownat);
#elif defined GNULIB_POSIXCHECK
# undef fchownat
# if HAVE_RAW_DECL_FCHOWNAT
_GL_WARN_ON_USE (fchownat, "fchownat is not portable - "
                 "use gnulib module openat for portability");
# endif
#endif


555
#if @GNULIB_FDATASYNC@
Paul Eggert's avatar
Paul Eggert committed
556 557
/* Synchronize changes to a file.
   Return 0 if successful, otherwise -1 and errno set.
558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578
   See POSIX:2008 specification
   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/fdatasync.html>.  */
# if !@HAVE_FDATASYNC@ || !@HAVE_DECL_FDATASYNC@
_GL_FUNCDECL_SYS (fdatasync, int, (int fd));
# endif
_GL_CXXALIAS_SYS (fdatasync, int, (int fd));
_GL_CXXALIASWARN (fdatasync);
#elif defined GNULIB_POSIXCHECK
# undef fdatasync
# if HAVE_RAW_DECL_FDATASYNC
_GL_WARN_ON_USE (fdatasync, "fdatasync is unportable - "
                 "use gnulib module fdatasync for portability");
# endif
#endif


#if @GNULIB_FSYNC@
/* Synchronize changes, including metadata, to a file.
   Return 0 if successful, otherwise -1 and errno set.
   See POSIX:2008 specification
   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/fsync.html>.  */
Paul Eggert's avatar
Paul Eggert committed
579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595
# if !@HAVE_FSYNC@
_GL_FUNCDECL_SYS (fsync, int, (int fd));
# endif
_GL_CXXALIAS_SYS (fsync, int, (int fd));
_GL_CXXALIASWARN (fsync);
#elif defined GNULIB_POSIXCHECK
# undef fsync
# if HAVE_RAW_DECL_FSYNC
_GL_WARN_ON_USE (fsync, "fsync is unportable - "
                 "use gnulib module fsync for portability");
# endif
#endif


#if @GNULIB_FTRUNCATE@
/* Change the size of the file to which FD is opened to become equal to LENGTH.
   Return 0 if successful, otherwise -1 and errno set.
596 597
   See the POSIX:2008 specification
   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/ftruncate.html>.  */
Paul Eggert's avatar
Paul Eggert committed
598 599 600 601 602 603 604 605 606
# if @REPLACE_FTRUNCATE@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef ftruncate
#   define ftruncate rpl_ftruncate
#  endif
_GL_FUNCDECL_RPL (ftruncate, int, (int fd, off_t length));
_GL_CXXALIAS_RPL (ftruncate, int, (int fd, off_t length));
# else
#  if !@HAVE_FTRUNCATE@
Paul Eggert's avatar
Paul Eggert committed
607
_GL_FUNCDECL_SYS (ftruncate, int, (int fd, off_t length));
Paul Eggert's avatar
Paul Eggert committed
608
#  endif
Paul Eggert's avatar
Paul Eggert committed
609
_GL_CXXALIAS_SYS (ftruncate, int, (int fd, off_t length));
Paul Eggert's avatar
Paul Eggert committed
610
# endif
Paul Eggert's avatar
Paul Eggert committed
611 612 613 614 615 616 617 618 619 620 621 622 623 624 625
_GL_CXXALIASWARN (ftruncate);
#elif defined GNULIB_POSIXCHECK
# undef ftruncate
# if HAVE_RAW_DECL_FTRUNCATE
_GL_WARN_ON_USE (ftruncate, "ftruncate is unportable - "
                 "use gnulib module ftruncate for portability");
# endif
#endif


#if @GNULIB_GETCWD@
/* Get the name of the current working directory, and put it in SIZE bytes
   of BUF.
   Return BUF if successful, or NULL if the directory couldn't be determined
   or SIZE was too small.
626 627
   See the POSIX:2008 specification
   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/getcwd.html>.
Paul Eggert's avatar
Paul Eggert committed
628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691
   Additionally, the gnulib module 'getcwd' guarantees the following GNU
   extension: If BUF is NULL, an array is allocated with 'malloc'; the array
   is SIZE bytes long, unless SIZE == 0, in which case it is as big as
   necessary.  */
# if @REPLACE_GETCWD@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   define getcwd rpl_getcwd
#  endif
_GL_FUNCDECL_RPL (getcwd, char *, (char *buf, size_t size));
_GL_CXXALIAS_RPL (getcwd, char *, (char *buf, size_t size));
# else
/* Need to cast, because on mingw, the second parameter is
                                                   int size.  */
_GL_CXXALIAS_SYS_CAST (getcwd, char *, (char *buf, size_t size));
# endif
_GL_CXXALIASWARN (getcwd);
#elif defined GNULIB_POSIXCHECK
# undef getcwd
# if HAVE_RAW_DECL_GETCWD
_GL_WARN_ON_USE (getcwd, "getcwd is unportable - "
                 "use gnulib module getcwd for portability");
# endif
#endif


#if @GNULIB_GETDOMAINNAME@
/* Return the NIS domain name of the machine.
   WARNING! The NIS domain name is unrelated to the fully qualified host name
            of the machine.  It is also unrelated to email addresses.
   WARNING! The NIS domain name is usually the empty string or "(none)" when
            not using NIS.

   Put up to LEN bytes of the NIS domain name into NAME.
   Null terminate it if the name is shorter than LEN.
   If the NIS domain name is longer than LEN, set errno = EINVAL and return -1.
   Return 0 if successful, otherwise set errno and return -1.  */
# if @REPLACE_GETDOMAINNAME@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef getdomainname
#   define getdomainname rpl_getdomainname
#  endif
_GL_FUNCDECL_RPL (getdomainname, int, (char *name, size_t len)
                                      _GL_ARG_NONNULL ((1)));
_GL_CXXALIAS_RPL (getdomainname, int, (char *name, size_t len));
# else
#  if !@HAVE_DECL_GETDOMAINNAME@
_GL_FUNCDECL_SYS (getdomainname, int, (char *name, size_t len)
                                      _GL_ARG_NONNULL ((1)));
#  endif
_GL_CXXALIAS_SYS (getdomainname, int, (char *name, size_t len));
# endif
_GL_CXXALIASWARN (getdomainname);
#elif defined GNULIB_POSIXCHECK
# undef getdomainname
# if HAVE_RAW_DECL_GETDOMAINNAME
_GL_WARN_ON_USE (getdomainname, "getdomainname is unportable - "
                 "use gnulib module getdomainname for portability");
# endif
#endif


#if @GNULIB_GETDTABLESIZE@
/* Return the maximum number of file descriptors in the current process.
   In POSIX, this is same as sysconf (_SC_OPEN_MAX).  */
Paul Eggert's avatar
Paul Eggert committed
692 693 694 695 696 697 698 699 700
# if @REPLACE_GETDTABLESIZE@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef getdtablesize
#   define getdtablesize rpl_getdtablesize
#  endif
_GL_FUNCDECL_RPL (getdtablesize, int, (void));
_GL_CXXALIAS_RPL (getdtablesize, int, (void));
# else
#  if !@HAVE_GETDTABLESIZE@
Paul Eggert's avatar
Paul Eggert committed
701
_GL_FUNCDECL_SYS (getdtablesize, int, (void));
Paul Eggert's avatar
Paul Eggert committed
702
#  endif
Paul Eggert's avatar
Paul Eggert committed
703
_GL_CXXALIAS_SYS (getdtablesize, int, (void));
Paul Eggert's avatar
Paul Eggert committed
704
# endif
Paul Eggert's avatar
Paul Eggert committed
705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793
_GL_CXXALIASWARN (getdtablesize);
#elif defined GNULIB_POSIXCHECK
# undef getdtablesize
# if HAVE_RAW_DECL_GETDTABLESIZE
_GL_WARN_ON_USE (getdtablesize, "getdtablesize is unportable - "
                 "use gnulib module getdtablesize for portability");
# endif
#endif


#if @GNULIB_GETGROUPS@
/* Return the supplemental groups that the current process belongs to.
   It is unspecified whether the effective group id is in the list.
   If N is 0, return the group count; otherwise, N describes how many
   entries are available in GROUPS.  Return -1 and set errno if N is
   not 0 and not large enough.  Fails with ENOSYS on some systems.  */
# if @REPLACE_GETGROUPS@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef getgroups
#   define getgroups rpl_getgroups
#  endif
_GL_FUNCDECL_RPL (getgroups, int, (int n, gid_t *groups));
_GL_CXXALIAS_RPL (getgroups, int, (int n, gid_t *groups));
# else
#  if !@HAVE_GETGROUPS@
_GL_FUNCDECL_SYS (getgroups, int, (int n, gid_t *groups));
#  endif
_GL_CXXALIAS_SYS (getgroups, int, (int n, gid_t *groups));
# endif
_GL_CXXALIASWARN (getgroups);
#elif defined GNULIB_POSIXCHECK
# undef getgroups
# if HAVE_RAW_DECL_GETGROUPS
_GL_WARN_ON_USE (getgroups, "getgroups is unportable - "
                 "use gnulib module getgroups for portability");
# endif
#endif


#if @GNULIB_GETHOSTNAME@
/* Return the standard host name of the machine.
   WARNING! The host name may or may not be fully qualified.

   Put up to LEN bytes of the host name into NAME.
   Null terminate it if the name is shorter than LEN.
   If the host name is longer than LEN, set errno = EINVAL and return -1.
   Return 0 if successful, otherwise set errno and return -1.  */
# if @UNISTD_H_HAVE_WINSOCK2_H@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef gethostname
#   define gethostname rpl_gethostname
#  endif
_GL_FUNCDECL_RPL (gethostname, int, (char *name, size_t len)
                                    _GL_ARG_NONNULL ((1)));
_GL_CXXALIAS_RPL (gethostname, int, (char *name, size_t len));
# else
#  if !@HAVE_GETHOSTNAME@
_GL_FUNCDECL_SYS (gethostname, int, (char *name, size_t len)
                                    _GL_ARG_NONNULL ((1)));
#  endif
/* Need to cast, because on Solaris 10 and OSF/1 5.1 systems, the second
   parameter is
                                                      int len.  */
_GL_CXXALIAS_SYS_CAST (gethostname, int, (char *name, size_t len));
# endif
_GL_CXXALIASWARN (gethostname);
#elif @UNISTD_H_HAVE_WINSOCK2_H@
# undef gethostname
# define gethostname gethostname_used_without_requesting_gnulib_module_gethostname
#elif defined GNULIB_POSIXCHECK
# undef gethostname
# if HAVE_RAW_DECL_GETHOSTNAME
_GL_WARN_ON_USE (gethostname, "gethostname is unportable - "
                 "use gnulib module gethostname for portability");
# endif
#endif


#if @GNULIB_GETLOGIN@
/* Returns the user's login name, or NULL if it cannot be found.  Upon error,
   returns NULL with errno set.

   See <http://www.opengroup.org/susv3xsh/getlogin.html>.

   Most programs don't need to use this function, because the information is
   available through environment variables:
     ${LOGNAME-$USER}        on Unix platforms,
     $USERNAME               on native Windows platforms.
 */
Paul Eggert's avatar
Paul Eggert committed
794
# if !@HAVE_DECL_GETLOGIN@
Paul Eggert's avatar
Paul Eggert committed
795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904
_GL_FUNCDECL_SYS (getlogin, char *, (void));
# endif
_GL_CXXALIAS_SYS (getlogin, char *, (void));
_GL_CXXALIASWARN (getlogin);
#elif defined GNULIB_POSIXCHECK
# undef getlogin
# if HAVE_RAW_DECL_GETLOGIN
_GL_WARN_ON_USE (getlogin, "getlogin is unportable - "
                 "use gnulib module getlogin for portability");
# endif
#endif


#if @GNULIB_GETLOGIN_R@
/* Copies the user's login name to NAME.
   The array pointed to by NAME has room for SIZE bytes.

   Returns 0 if successful.  Upon error, an error number is returned, or -1 in
   the case that the login name cannot be found but no specific error is
   provided (this case is hopefully rare but is left open by the POSIX spec).

   See <http://www.opengroup.org/susv3xsh/getlogin.html>.

   Most programs don't need to use this function, because the information is
   available through environment variables:
     ${LOGNAME-$USER}        on Unix platforms,
     $USERNAME               on native Windows platforms.
 */
# if @REPLACE_GETLOGIN_R@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   define getlogin_r rpl_getlogin_r
#  endif
_GL_FUNCDECL_RPL (getlogin_r, int, (char *name, size_t size)
                                   _GL_ARG_NONNULL ((1)));
_GL_CXXALIAS_RPL (getlogin_r, int, (char *name, size_t size));
# else
#  if !@HAVE_DECL_GETLOGIN_R@
_GL_FUNCDECL_SYS (getlogin_r, int, (char *name, size_t size)
                                   _GL_ARG_NONNULL ((1)));
#  endif
/* Need to cast, because on Solaris 10 systems, the second argument is
                                                     int size.  */
_GL_CXXALIAS_SYS_CAST (getlogin_r, int, (char *name, size_t size));
# endif
_GL_CXXALIASWARN (getlogin_r);
#elif defined GNULIB_POSIXCHECK
# undef getlogin_r
# if HAVE_RAW_DECL_GETLOGIN_R
_GL_WARN_ON_USE (getlogin_r, "getlogin_r is unportable - "
                 "use gnulib module getlogin_r for portability");
# endif
#endif


#if @GNULIB_GETPAGESIZE@
# if @REPLACE_GETPAGESIZE@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   define getpagesize rpl_getpagesize
#  endif
_GL_FUNCDECL_RPL (getpagesize, int, (void));
_GL_CXXALIAS_RPL (getpagesize, int, (void));
# else
#  if !@HAVE_GETPAGESIZE@
#   if !defined getpagesize
/* This is for POSIX systems.  */
#    if !defined _gl_getpagesize && defined _SC_PAGESIZE
#     if ! (defined __VMS && __VMS_VER < 70000000)
#      define _gl_getpagesize() sysconf (_SC_PAGESIZE)
#     endif
#    endif
/* This is for older VMS.  */
#    if !defined _gl_getpagesize && defined __VMS
#     ifdef __ALPHA
#      define _gl_getpagesize() 8192
#     else
#      define _gl_getpagesize() 512
#     endif
#    endif
/* This is for BeOS.  */
#    if !defined _gl_getpagesize && @HAVE_OS_H@
#     include <OS.h>
#     if defined B_PAGE_SIZE
#      define _gl_getpagesize() B_PAGE_SIZE
#     endif
#    endif
/* This is for AmigaOS4.0.  */
#    if !defined _gl_getpagesize && defined __amigaos4__
#     define _gl_getpagesize() 2048
#    endif
/* This is for older Unix systems.  */
#    if !defined _gl_getpagesize && @HAVE_SYS_PARAM_H@
#     include <sys/param.h>
#     ifdef EXEC_PAGESIZE
#      define _gl_getpagesize() EXEC_PAGESIZE
#     else
#      ifdef NBPG
#       ifndef CLSIZE
#        define CLSIZE 1
#       endif
#       define _gl_getpagesize() (NBPG * CLSIZE)
#      else
#       ifdef NBPC
#        define _gl_getpagesize() NBPC
#       endif
#      endif
#     endif
#    endif
#    if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#     define getpagesize() _gl_getpagesize ()
#    else
905
#     if !GNULIB_defined_getpagesize_function
Paul Eggert's avatar
Paul Eggert committed
906
_GL_UNISTD_INLINE int
Paul Eggert's avatar
Paul Eggert committed
907 908 909 910
getpagesize ()
{
  return _gl_getpagesize ();
}
911 912
#      define GNULIB_defined_getpagesize_function 1
#     endif
Paul Eggert's avatar
Paul Eggert committed
913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978
#    endif
#   endif
#  endif
/* Need to cast, because on Cygwin 1.5.x systems, the return type is size_t.  */
_GL_CXXALIAS_SYS_CAST (getpagesize, int, (void));
# endif
# if @HAVE_DECL_GETPAGESIZE@
_GL_CXXALIASWARN (getpagesize);
# endif
#elif defined GNULIB_POSIXCHECK
# undef getpagesize
# if HAVE_RAW_DECL_GETPAGESIZE
_GL_WARN_ON_USE (getpagesize, "getpagesize is unportable - "
                 "use gnulib module getpagesize for portability");
# endif
#endif


#if @GNULIB_GETUSERSHELL@
/* Return the next valid login shell on the system, or NULL when the end of
   the list has been reached.  */
# if !@HAVE_DECL_GETUSERSHELL@
_GL_FUNCDECL_SYS (getusershell, char *, (void));
# endif
_GL_CXXALIAS_SYS (getusershell, char *, (void));
_GL_CXXALIASWARN (getusershell);
#elif defined GNULIB_POSIXCHECK
# undef getusershell
# if HAVE_RAW_DECL_GETUSERSHELL
_GL_WARN_ON_USE (getusershell, "getusershell is unportable - "
                 "use gnulib module getusershell for portability");
# endif
#endif

#if @GNULIB_GETUSERSHELL@
/* Rewind to pointer that is advanced at each getusershell() call.  */
# if !@HAVE_DECL_GETUSERSHELL@
_GL_FUNCDECL_SYS (setusershell, void, (void));
# endif
_GL_CXXALIAS_SYS (setusershell, void, (void));
_GL_CXXALIASWARN (setusershell);
#elif defined GNULIB_POSIXCHECK
# undef setusershell
# if HAVE_RAW_DECL_SETUSERSHELL
_GL_WARN_ON_USE (setusershell, "setusershell is unportable - "
                 "use gnulib module getusershell for portability");
# endif
#endif

#if @GNULIB_GETUSERSHELL@
/* Free the pointer that is advanced at each getusershell() call and
   associated resources.  */
# if !@HAVE_DECL_GETUSERSHELL@
_GL_FUNCDECL_SYS (endusershell, void, (void));
# endif
_GL_CXXALIAS_SYS (endusershell, void, (void));
_GL_CXXALIASWARN (endusershell);
#elif defined GNULIB_POSIXCHECK
# undef endusershell
# if HAVE_RAW_DECL_ENDUSERSHELL
_GL_WARN_ON_USE (endusershell, "endusershell is unportable - "
                 "use gnulib module getusershell for portability");
# endif
#endif


Paul Eggert's avatar
Paul Eggert committed
979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994
#if @GNULIB_GROUP_MEMBER@
/* Determine whether group id is in calling user's group list.  */
# if !@HAVE_GROUP_MEMBER@
_GL_FUNCDECL_SYS (group_member, int, (gid_t gid));
# endif
_GL_CXXALIAS_SYS (group_member, int, (gid_t gid));
_GL_CXXALIASWARN (group_member);
#elif defined GNULIB_POSIXCHECK
# undef group_member
# if HAVE_RAW_DECL_GROUP_MEMBER
_GL_WARN_ON_USE (group_member, "group_member is unportable - "
                 "use gnulib module group-member for portability");
# endif
#endif


Paul Eggert's avatar
Paul Eggert committed
995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015
#if @GNULIB_ISATTY@
# if @REPLACE_ISATTY@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef isatty
#   define isatty rpl_isatty
#  endif
_GL_FUNCDECL_RPL (isatty, int, (int fd));
_GL_CXXALIAS_RPL (isatty, int, (int fd));
# else
_GL_CXXALIAS_SYS (isatty, int, (int fd));
# endif
_GL_CXXALIASWARN (isatty);
#elif defined GNULIB_POSIXCHECK
# undef isatty
# if HAVE_RAW_DECL_ISATTY
_GL_WARN_ON_USE (isatty, "isatty has portability problems on native Windows - "
                 "use gnulib module isatty for portability");
# endif
#endif


Paul Eggert's avatar
Paul Eggert committed
1016 1017 1018 1019
#if @GNULIB_LCHOWN@
/* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
   to GID (if GID is not -1).  Do not follow symbolic links.
   Return 0 if successful, otherwise -1 and errno set.
1020 1021
   See the POSIX:2008 specification
   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/lchown.html>.  */
Paul Eggert's avatar
Paul Eggert committed
1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049
# if @REPLACE_LCHOWN@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef lchown
#   define lchown rpl_lchown
#  endif
_GL_FUNCDECL_RPL (lchown, int, (char const *file, uid_t owner, gid_t group)
                               _GL_ARG_NONNULL ((1)));
_GL_CXXALIAS_RPL (lchown, int, (char const *file, uid_t owner, gid_t group));
# else
#  if !@HAVE_LCHOWN@
_GL_FUNCDECL_SYS (lchown, int, (char const *file, uid_t owner, gid_t group)
                               _GL_ARG_NONNULL ((1)));
#  endif
_GL_CXXALIAS_SYS (lchown, int, (char const *file, uid_t owner, gid_t group));
# endif
_GL_CXXALIASWARN (lchown);
#elif defined GNULIB_POSIXCHECK
# undef lchown
# if HAVE_RAW_DECL_LCHOWN
_GL_WARN_ON_USE (lchown, "lchown is unportable to pre-POSIX.1-2001 systems - "
                 "use gnulib module lchown for portability");
# endif
#endif


#if @GNULIB_LINK@
/* Create a new hard link for an existing file.
   Return 0 if successful, otherwise -1 and errno set.
1050 1051
   See POSIX:2008 specification
   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/link.html>.  */
Paul Eggert's avatar
Paul Eggert committed
1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115
# if @REPLACE_LINK@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   define link rpl_link
#  endif
_GL_FUNCDECL_RPL (link, int, (const char *path1, const char *path2)
                             _GL_ARG_NONNULL ((1, 2)));
_GL_CXXALIAS_RPL (link, int, (const char *path1, const char *path2));
# else
#  if !@HAVE_LINK@
_GL_FUNCDECL_SYS (link, int, (const char *path1, const char *path2)
                             _GL_ARG_NONNULL ((1, 2)));
#  endif
_GL_CXXALIAS_SYS (link, int, (const char *path1, const char *path2));
# endif
_GL_CXXALIASWARN (link);
#elif defined GNULIB_POSIXCHECK
# undef link
# if HAVE_RAW_DECL_LINK
_GL_WARN_ON_USE (link, "link is unportable - "
                 "use gnulib module link for portability");
# endif
#endif


#if @GNULIB_LINKAT@
/* Create a new hard link for an existing file, relative to two
   directories.  FLAG controls whether symlinks are followed.
   Return 0 if successful, otherwise -1 and errno set.  */
# if @REPLACE_LINKAT@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef linkat
#   define linkat rpl_linkat
#  endif
_GL_FUNCDECL_RPL (linkat, int,
                  (int fd1, const char *path1, int fd2, const char *path2,
                   int flag)
                  _GL_ARG_NONNULL ((2, 4)));
_GL_CXXALIAS_RPL (linkat, int,
                  (int fd1, const char *path1, int fd2, const char *path2,
                   int flag));
# else
#  if !@HAVE_LINKAT@
_GL_FUNCDECL_SYS (linkat, int,
                  (int fd1, const char *path1, int fd2, const char *path2,
                   int flag)
                  _GL_ARG_NONNULL ((2, 4)));
#  endif
_GL_CXXALIAS_SYS (linkat, int,
                  (int fd1, const char *path1, int fd2, const char *path2,
                   int flag));
# endif
_GL_CXXALIASWARN (linkat);
#elif defined GNULIB_POSIXCHECK
# undef linkat
# if HAVE_RAW_DECL_LINKAT
_GL_WARN_ON_USE (linkat, "linkat is unportable - "
                 "use gnulib module linkat for portability");
# endif
#endif


#if @GNULIB_LSEEK@
/* Set the offset of FD relative to SEEK_SET, SEEK_CUR, or SEEK_END.
   Return the new offset if successful, otherwise -1 and errno set.
1116 1117
   See the POSIX:2008 specification
   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/lseek.html>.  */
Paul Eggert's avatar
Paul Eggert committed
1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162
# if @REPLACE_LSEEK@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   define lseek rpl_lseek
#  endif
_GL_FUNCDECL_RPL (lseek, off_t, (int fd, off_t offset, int whence));
_GL_CXXALIAS_RPL (lseek, off_t, (int fd, off_t offset, int whence));
# else
_GL_CXXALIAS_SYS (lseek, off_t, (int fd, off_t offset, int whence));
# endif
_GL_CXXALIASWARN (lseek);
#elif defined GNULIB_POSIXCHECK
# undef lseek
# if HAVE_RAW_DECL_LSEEK
_GL_WARN_ON_USE (lseek, "lseek does not fail with ESPIPE on pipes on some "
                 "systems - use gnulib module lseek for portability");
# endif
#endif


#if @GNULIB_PIPE@
/* Create a pipe, defaulting to O_BINARY mode.
   Store the read-end as fd[0] and the write-end as fd[1].
   Return 0 upon success, or -1 with errno set upon failure.  */
# if !@HAVE_PIPE@
_GL_FUNCDECL_SYS (pipe, int, (int fd[2]) _GL_ARG_NONNULL ((1)));
# endif
_GL_CXXALIAS_SYS (pipe, int, (int fd[2]));
_GL_CXXALIASWARN (pipe);
#elif defined GNULIB_POSIXCHECK
# undef pipe
# if HAVE_RAW_DECL_PIPE
_GL_WARN_ON_USE (pipe, "pipe is unportable - "
                 "use gnulib module pipe-posix for portability");
# endif
#endif


#if @GNULIB_PIPE2@
/* Create a pipe, applying the given flags when opening the read-end of the
   pipe and the write-end of the pipe.
   The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
   and O_TEXT, O_BINARY (defined in "binary-io.h").
   Store the read-end as fd[0] and the write-end as fd[1].
   Return 0 upon success, or -1 with errno set upon failure.
   See also the Linux man page at
Paul Eggert's avatar
Paul Eggert committed
1163
   <https://www.kernel.org/doc/man-pages/online/pages/man2/pipe2.2.html>.  */
Paul Eggert's avatar
Paul Eggert committed
1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186
# if @HAVE_PIPE2@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   define pipe2 rpl_pipe2
#  endif
_GL_FUNCDECL_RPL (pipe2, int, (int fd[2], int flags) _GL_ARG_NONNULL ((1)));
_GL_CXXALIAS_RPL (pipe2, int, (int fd[2], int flags));
# else
_GL_FUNCDECL_SYS (pipe2, int, (int fd[2], int flags) _GL_ARG_NONNULL ((1)));
_GL_CXXALIAS_SYS (pipe2, int, (int fd[2], int flags));
# endif
_GL_CXXALIASWARN (pipe2);
#elif defined GNULIB_POSIXCHECK
# undef pipe2
# if HAVE_RAW_DECL_PIPE2
_GL_WARN_ON_USE (pipe2, "pipe2 is unportable - "
                 "use gnulib module pipe2 for portability");
# endif
#endif


#if @GNULIB_PREAD@
/* Read at most BUFSIZE bytes from FD into BUF, starting at OFFSET.
   Return the number of bytes placed into BUF if successful, otherwise
1187 1188 1189
   set errno and return -1.  0 indicates EOF.
   See the POSIX:2008 specification
   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/pread.html>.  */
Paul Eggert's avatar
Paul Eggert committed
1190 1191
# if @REPLACE_PREAD@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1192
#   undef pread
Paul Eggert's avatar
Paul Eggert committed
1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222
#   define pread rpl_pread
#  endif
_GL_FUNCDECL_RPL (pread, ssize_t,
                  (int fd, void *buf, size_t bufsize, off_t offset)
                  _GL_ARG_NONNULL ((2)));
_GL_CXXALIAS_RPL (pread, ssize_t,
                  (int fd, void *buf, size_t bufsize, off_t offset));
# else
#  if !@HAVE_PREAD@
_GL_FUNCDECL_SYS (pread, ssize_t,
                  (int fd, void *buf, size_t bufsize, off_t offset)
                  _GL_ARG_NONNULL ((2)));
#  endif
_GL_CXXALIAS_SYS (pread, ssize_t,
                  (int fd, void *buf, size_t bufsize, off_t offset));
# endif
_GL_CXXALIASWARN (pread);
#elif defined GNULIB_POSIXCHECK
# undef pread
# if HAVE_RAW_DECL_PREAD
_GL_WARN_ON_USE (pread, "pread is unportable - "
                 "use gnulib module pread for portability");
# endif
#endif


#if @GNULIB_PWRITE@
/* Write at most BUFSIZE bytes from BUF into FD, starting at OFFSET.
   Return the number of bytes written if successful, otherwise
   set errno and return -1.  0 indicates nothing written.  See the
1223 1224
   POSIX:2008 specification
   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/pwrite.html>.  */
Paul Eggert's avatar
Paul Eggert committed
1225 1226
# if @REPLACE_PWRITE@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1227
#   undef pwrite
Paul Eggert's avatar
Paul Eggert committed
1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253
#   define pwrite rpl_pwrite
#  endif
_GL_FUNCDECL_RPL (pwrite, ssize_t,
                  (int fd, const void *buf, size_t bufsize, off_t offset)
                  _GL_ARG_NONNULL ((2)));
_GL_CXXALIAS_RPL (pwrite, ssize_t,
                  (int fd, const void *buf, size_t bufsize, off_t offset));
# else
#  if !@HAVE_PWRITE@
_GL_FUNCDECL_SYS (pwrite, ssize_t,
                  (int fd, const void *buf, size_t bufsize, off_t offset)
                  _GL_ARG_NONNULL ((2)));
#  endif
_GL_CXXALIAS_SYS (pwrite, ssize_t,
                  (int fd, const void *buf, size_t bufsize, off_t offset));
# endif
_GL_CXXALIASWARN (pwrite);
#elif defined GNULIB_POSIXCHECK
# undef pwrite
# if HAVE_RAW_DECL_PWRITE
_GL_WARN_ON_USE (pwrite, "pwrite is unportable - "
                 "use gnulib module pwrite for portability");
# endif
#endif


Paul Eggert's avatar
Paul Eggert committed
1254 1255
#if @GNULIB_READ@
/* Read up to COUNT bytes from file descriptor FD into the buffer starting
1256 1257 1258
   at BUF.  See the POSIX:2008 specification
   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/read.html>.  */
# if @REPLACE_READ@
Paul Eggert's avatar
Paul Eggert committed
1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef read
#   define read rpl_read
#  endif
_GL_FUNCDECL_RPL (read, ssize_t, (int fd, void *buf, size_t count)
                                 _GL_ARG_NONNULL ((2)));
_GL_CXXALIAS_RPL (read, ssize_t, (int fd, void *buf, size_t count));
# else
/* Need to cast, because on mingw, the third parameter is
                                                          unsigned int count
   and the return type is 'int'.  */
_GL_CXXALIAS_SYS_CAST (read, ssize_t, (int fd, void *buf, size_t count));
# endif
_GL_CXXALIASWARN (read);
#endif


Paul Eggert's avatar
Paul Eggert committed
1276 1277 1278 1279
#if @GNULIB_READLINK@
/* Read the contents of the symbolic link FILE and place the first BUFSIZE
   bytes of it into BUF.  Return the number of bytes placed into BUF if
   successful, otherwise -1 and errno set.
1280 1281
   See the POSIX:2008 specification
   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/readlink.html>.  */
Paul Eggert's avatar
Paul Eggert committed
1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310
# if @REPLACE_READLINK@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   define readlink rpl_readlink
#  endif
_GL_FUNCDECL_RPL (readlink, ssize_t,
                  (const char *file, char *buf, size_t bufsize)
                  _GL_ARG_NONNULL ((1, 2)));
_GL_CXXALIAS_RPL (readlink, ssize_t,
                  (const char *file, char *buf, size_t bufsize));
# else
#  if !@HAVE_READLINK@
_GL_FUNCDECL_SYS (readlink, ssize_t,
                  (const char *file, char *buf, size_t bufsize)
                  _GL_ARG_NONNULL ((1, 2)));
#  endif
_GL_CXXALIAS_SYS (readlink, ssize_t,
                  (const char *file, char *buf, size_t bufsize));
# endif
_GL_CXXALIASWARN (readlink);
#elif defined GNULIB_POSIXCHECK
# undef readlink
# if HAVE_RAW_DECL_READLINK
_GL_WARN_ON_USE (readlink, "readlink is unportable - "
                 "use gnulib module readlink for portability");
# endif
#endif


#if @GNULIB_READLINKAT@
Paul Eggert's avatar
Paul Eggert committed
1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321
# if @REPLACE_READLINKAT@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   define readlinkat rpl_readlinkat
#  endif
_GL_FUNCDECL_RPL (readlinkat, ssize_t,
                  (int fd, char const *file, char *buf, size_t len)
                  _GL_ARG_NONNULL ((2, 3)));
_GL_CXXALIAS_RPL (readlinkat, ssize_t,
                  (int fd, char const *file, char *buf, size_t len));
# else
#  if !@HAVE_READLINKAT@
Paul Eggert's avatar
Paul Eggert committed
1322 1323 1324
_GL_FUNCDECL_SYS (readlinkat, ssize_t,
                  (int fd, char const *file, char *buf, size_t len)
                  _GL_ARG_NONNULL ((2, 3)));
Paul Eggert's avatar
Paul Eggert committed
1325
#  endif
Paul Eggert's avatar
Paul Eggert committed
1326 1327
_GL_CXXALIAS_SYS (readlinkat, ssize_t,
                  (int fd, char const *file, char *buf, size_t len));
Paul Eggert's avatar
Paul Eggert committed
1328
# endif
Paul Eggert's avatar
Paul Eggert committed
1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359
_GL_CXXALIASWARN (readlinkat);
#elif defined GNULIB_POSIXCHECK
# undef readlinkat
# if HAVE_RAW_DECL_READLINKAT
_GL_WARN_ON_USE (readlinkat, "readlinkat is not portable - "
                 "use gnulib module readlinkat for portability");
# endif
#endif


#if @GNULIB_RMDIR@
/* Remove the directory DIR.  */
# if @REPLACE_RMDIR@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   define rmdir rpl_rmdir
#  endif
_GL_FUNCDECL_RPL (rmdir, int, (char const *name) _GL_ARG_NONNULL ((1)));
_GL_CXXALIAS_RPL (rmdir, int, (char const *name));
# else
_GL_CXXALIAS_SYS (rmdir, int, (char const *name));
# endif
_GL_CXXALIASWARN (rmdir);
#elif defined GNULIB_POSIXCHECK
# undef rmdir
# if HAVE_RAW_DECL_RMDIR
_GL_WARN_ON_USE (rmdir, "rmdir is unportable - "
                 "use gnulib module rmdir for portability");
# endif
#endif


Paul Eggert's avatar
Paul Eggert committed
1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372
#if @GNULIB_SETHOSTNAME@
/* Set the host name of the machine.
   The host name may or may not be fully qualified.

   Put LEN bytes of NAME into the host name.
   Return 0 if successful, otherwise, set errno and return -1.

   Platforms with no ability to set the hostname return -1 and set
   errno = ENOSYS.  */
# if !@HAVE_SETHOSTNAME@ || !@HAVE_DECL_SETHOSTNAME@
_GL_FUNCDECL_SYS (sethostname, int, (const char *name, size_t len)
                                    _GL_ARG_NONNULL ((1)));
# endif
Paul Eggert's avatar
Paul Eggert committed
1373
/* Need to cast, because on Solaris 11 2011-10, Mac OS X 10.5, IRIX 6.5
Paul Eggert's avatar
Paul Eggert committed
1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386
   and FreeBSD 6.4 the second parameter is int.  On Solaris 11
   2011-10, the first parameter is not const.  */
_GL_CXXALIAS_SYS_CAST (sethostname, int, (const char *name, size_t len));
_GL_CXXALIASWARN (sethostname);
#elif defined GNULIB_POSIXCHECK
# undef sethostname
# if HAVE_RAW_DECL_SETHOSTNAME
_GL_WARN_ON_USE (sethostname, "sethostname is unportable - "
                 "use gnulib module sethostname for portability");
# endif
#endif


Paul Eggert's avatar
Paul Eggert committed
1387 1388 1389
#if @GNULIB_SLEEP@
/* Pause the execution of the current thread for N seconds.
   Returns the number of seconds left to sleep.
1390 1391
   See the POSIX:2008 specification
   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/sleep.html>.  */
Paul Eggert's avatar
Paul Eggert committed
1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441
# if @REPLACE_SLEEP@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef sleep
#   define sleep rpl_sleep
#  endif
_GL_FUNCDECL_RPL (sleep, unsigned int, (unsigned int n));
_GL_CXXALIAS_RPL (sleep, unsigned int, (unsigned int n));
# else
#  if !@HAVE_SLEEP@
_GL_FUNCDECL_SYS (sleep, unsigned int, (unsigned int n));
#  endif
_GL_CXXALIAS_SYS (sleep, unsigned int, (unsigned int n));
# endif
_GL_CXXALIASWARN (sleep);
#elif defined GNULIB_POSIXCHECK
# undef sleep
# if HAVE_RAW_DECL_SLEEP
_GL_WARN_ON_USE (sleep, "sleep is unportable - "
                 "use gnulib module sleep for portability");
# endif
#endif


#if @GNULIB_SYMLINK@
# if @REPLACE_SYMLINK@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef symlink
#   define symlink rpl_symlink
#  endif
_GL_FUNCDECL_RPL (symlink, int, (char const *contents, char const *file)
                                _GL_ARG_NONNULL ((1, 2)));
_GL_CXXALIAS_RPL (symlink, int, (char const *contents, char const *file));
# else
#  if !@HAVE_SYMLINK@
_GL_FUNCDECL_SYS (symlink, int, (char const *contents, char const *file)
                                _GL_ARG_NONNULL ((1, 2)));
#  endif
_GL_CXXALIAS_SYS (symlink, int, (char const *contents, char const *file));
# endif
_GL_CXXALIASWARN (symlink);
#elif defined GNULIB_POSIXCHECK
# undef symlink
# if HAVE_RAW_DECL_SYMLINK
_GL_WARN_ON_USE (symlink, "symlink is not portable - "
                 "use gnulib module symlink for portability");
# endif
#endif


#if @GNULIB_SYMLINKAT@
Paul Eggert's avatar
Paul Eggert committed
1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453
# if @REPLACE_SYMLINKAT@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef symlinkat
#   define symlinkat rpl_symlinkat
#  endif
_GL_FUNCDECL_RPL (symlinkat, int,
                  (char const *contents, int fd, char const *file)
                  _GL_ARG_NONNULL ((1, 3)));
_GL_CXXALIAS_RPL (symlinkat, int,
                  (char const *contents, int fd, char const *file));
# else
#  if !@HAVE_SYMLINKAT@
Paul Eggert's avatar
Paul Eggert committed
1454 1455 1456
_GL_FUNCDECL_SYS (symlinkat, int,
                  (char const *contents, int fd, char const *file)
                  _GL_ARG_NONNULL ((1, 3)));
Paul Eggert's avatar
Paul Eggert committed
1457
#  endif
Paul Eggert's avatar
Paul Eggert committed
1458 1459
_GL_CXXALIAS_SYS (symlinkat, int,
                  (char const *contents, int fd, char const *file));
Paul Eggert's avatar
Paul Eggert committed
1460
# endif
Paul Eggert's avatar
Paul Eggert committed
1461 1462 1463 1464 1465 1466 1467 1468 1469 1470
_GL_CXXALIASWARN (symlinkat);
#elif defined GNULIB_POSIXCHECK
# undef symlinkat
# if HAVE_RAW_DECL_SYMLINKAT
_GL_WARN_ON_USE (symlinkat, "symlinkat is not portable - "
                 "use gnulib module symlinkat for portability");
# endif
#endif


Paul Eggert's avatar
Paul Eggert committed
1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500
#if @GNULIB_TRUNCATE@
/* Change the size of the file designated by FILENAME to become equal to LENGTH.
   Return 0 if successful, otherwise -1 and errno set.
   See the POSIX:2008 specification
   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/truncate.html>.  */
# if @REPLACE_TRUNCATE@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef truncate
#   define truncate rpl_truncate
#  endif
_GL_FUNCDECL_RPL (truncate, int, (const char *filename, off_t length)
                                 _GL_ARG_NONNULL ((1)));
_GL_CXXALIAS_RPL (truncate, int, (const char *filename, off_t length));
# else
#  if !@HAVE_TRUNCATE@
_GL_FUNCDECL_SYS (truncate, int, (const char *filename, off_t length)
                                 _GL_ARG_NONNULL ((1)));
#  endif
_GL_CXXALIAS_SYS (truncate, int, (const char *filename, off_t length));
# endif
_GL_CXXALIASWARN (truncate);
#elif defined GNULIB_POSIXCHECK
# undef truncate
# if HAVE_RAW_DECL_TRUNCATE
_GL_WARN_ON_USE (truncate, "truncate is unportable - "
                 "use gnulib module truncate for portability");
# endif
#endif


Paul Eggert's avatar
Paul Eggert committed
1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581
#if @GNULIB_TTYNAME_R@
/* Store at most BUFLEN characters of the pathname of the terminal FD is
   open on in BUF.  Return 0 on success, otherwise an error number.  */
# if @REPLACE_TTYNAME_R@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef ttyname_r
#   define ttyname_r rpl_ttyname_r
#  endif
_GL_FUNCDECL_RPL (ttyname_r, int,
                  (int fd, char *buf, size_t buflen) _GL_ARG_NONNULL ((2)));
_GL_CXXALIAS_RPL (ttyname_r, int,
                  (int fd, char *buf, size_t buflen));
# else
#  if !@HAVE_DECL_TTYNAME_R@
_GL_FUNCDECL_SYS (ttyname_r, int,
                  (int fd, char *buf, size_t buflen) _GL_ARG_NONNULL ((2)));
#  endif
_GL_CXXALIAS_SYS (ttyname_r, int,
                  (int fd, char *buf, size_t buflen));
# endif
_GL_CXXALIASWARN (ttyname_r);
#elif defined GNULIB_POSIXCHECK
# undef ttyname_r
# if HAVE_RAW_DECL_TTYNAME_R
_GL_WARN_ON_USE (ttyname_r, "ttyname_r is not portable - "
                 "use gnulib module ttyname_r for portability");
# endif
#endif


#if @GNULIB_UNLINK@
# if @REPLACE_UNLINK@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef unlink
#   define unlink rpl_unlink
#  endif
_GL_FUNCDECL_RPL (unlink, int, (char const *file) _GL_ARG_NONNULL ((1)));
_GL_CXXALIAS_RPL (unlink, int, (char const *file));
# else
_GL_CXXALIAS_SYS (unlink, int, (char const *file));
# endif
_GL_CXXALIASWARN (unlink);
#elif defined GNULIB_POSIXCHECK
# undef unlink
# if HAVE_RAW_DECL_UNLINK
_GL_WARN_ON_USE (unlink, "unlink is not portable - "
                 "use gnulib module unlink for portability");
# endif
#endif


#if @GNULIB_UNLINKAT@
# if @REPLACE_UNLINKAT@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef unlinkat
#   define unlinkat rpl_unlinkat
#  endif
_GL_FUNCDECL_RPL (unlinkat, int, (int fd, char const *file, int flag)
                                 _GL_ARG_NONNULL ((2)));
_GL_CXXALIAS_RPL (unlinkat, int, (int fd, char const *file, int flag));
# else
#  if !@HAVE_UNLINKAT@
_GL_FUNCDECL_SYS (unlinkat, int, (int fd, char const *file, int flag)
                                 _GL_ARG_NONNULL ((2)));
#  endif
_GL_CXXALIAS_SYS (unlinkat, int, (int fd, char const *file, int flag));
# endif
_GL_CXXALIASWARN (unlinkat);
#elif defined GNULIB_POSIXCHECK
# undef unlinkat
# if HAVE_RAW_DECL_UNLINKAT
_GL_WARN_ON_USE (unlinkat, "unlinkat is not portable - "
                 "use gnulib module openat for portability");
# endif
#endif


#if @GNULIB_USLEEP@
/* Pause the execution of the current thread for N microseconds.
   Returns 0 on completion, or -1 on range error.
   See the POSIX:2001 specification
1582
   <http://www.opengroup.org/susv3xsh/usleep.html>.  */
Paul Eggert's avatar
Paul Eggert committed
1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607
# if @REPLACE_USLEEP@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef usleep
#   define usleep rpl_usleep
#  endif
_GL_FUNCDECL_RPL (usleep, int, (useconds_t n));
_GL_CXXALIAS_RPL (usleep, int, (useconds_t n));
# else
#  if !@HAVE_USLEEP@
_GL_FUNCDECL_SYS (usleep, int, (useconds_t n));
#  endif
_GL_CXXALIAS_SYS (usleep, int, (useconds_t n));
# endif
_GL_CXXALIASWARN (usleep);
#elif defined GNULIB_POSIXCHECK
# undef usleep
# if HAVE_RAW_DECL_USLEEP
_GL_WARN_ON_USE (usleep, "usleep is unportable - "
                 "use gnulib module usleep for portability");
# endif
#endif


#if @GNULIB_WRITE@
/* Write up to COUNT bytes starting at BUF to file descriptor FD.
1608 1609 1610
   See the POSIX:2008 specification
   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/write.html>.  */
# if @REPLACE_WRITE@
Paul Eggert's avatar
Paul Eggert committed
1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef write
#   define write rpl_write
#  endif
_GL_FUNCDECL_RPL (write, ssize_t, (int fd, const void *buf, size_t count)
                                  _GL_ARG_NONNULL ((2)));
_GL_CXXALIAS_RPL (write, ssize_t, (int fd, const void *buf, size_t count));
# else
/* Need to cast, because on mingw, the third parameter is
                                                             unsigned int count
   and the return type is 'int'.  */
_GL_CXXALIAS_SYS_CAST (write, ssize_t, (int fd, const void *buf, size_t count));
# endif
_GL_CXXALIASWARN (write);
#endif

Paul Eggert's avatar
Paul Eggert committed
1627
_GL_INLINE_HEADER_END
Paul Eggert's avatar
Paul Eggert committed
1628

1629
#endif /* _@GUARD_PREFIX@_UNISTD_H */
Paul Eggert's avatar
Paul Eggert committed
1630
#endif /* _GL_INCLUDING_UNISTD_H */
1631
#endif /* _@GUARD_PREFIX@_UNISTD_H */