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[bpt/guile.git] / lib / unistd.in.h
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9b36a80c 1/* Substitute for and wrapper around <unistd.h>.
f0007cad 2 Copyright (C) 2003-2012 Free Software Foundation, Inc.
9b36a80c
LC		 3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU Lesser General Public License as published by
6 the Free Software Foundation; either version 2, 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 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public License
15 along with this program; if not, write to the Free Software Foundation,
16 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
17
9b36a80c
LC		 18#if __GNUC__ >= 3
19@PRAGMA_SYSTEM_HEADER@
20#endif
0f00f2c3 21@PRAGMA_COLUMNS@
9b36a80c 22
a927b6c1
LC		 23/* Special invocation convention:
24 - On mingw, several headers, including <winsock2.h>, include <unistd.h>,
25 but we need to ensure that both the system <unistd.h> and <winsock2.h>
26 are completely included before we replace gethostname. */
27#if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@ \
28 && !defined _GL_WINSOCK2_H_WITNESS && defined _WINSOCK2_H
29/* <unistd.h> is being indirectly included for the first time from
30 <winsock2.h>; avoid declaring any overrides. */
31# if @HAVE_UNISTD_H@
32# @INCLUDE_NEXT@ @NEXT_UNISTD_H@
33# else
34# error unexpected; report this to bug-gnulib@gnu.org
35# endif
36# define _GL_WINSOCK2_H_WITNESS
37
38/* Normal invocation. */
3d458a81 39#elif !defined _@GUARD_PREFIX@_UNISTD_H
a927b6c1 40
9b36a80c
LC		 41/* The include_next requires a split double-inclusion guard. */
42#if @HAVE_UNISTD_H@
43# @INCLUDE_NEXT@ @NEXT_UNISTD_H@
44#endif
45
a927b6c1
LC		 46/* Get all possible declarations of gethostname(). */
47#if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@ \
48 && !defined _GL_INCLUDING_WINSOCK2_H
49# define _GL_INCLUDING_WINSOCK2_H
50# include <winsock2.h>
51# undef _GL_INCLUDING_WINSOCK2_H
52#endif
53
3d458a81
AW		 54#if !defined _@GUARD_PREFIX@_UNISTD_H && !defined _GL_INCLUDING_WINSOCK2_H
55#define _@GUARD_PREFIX@_UNISTD_H
9b36a80c 56
8912421c
LC		 57/* NetBSD 5.0 mis-defines NULL. Also get size_t. */
58#include <stddef.h>
59
f240aacb 60/* mingw doesn't define the SEEK_* or *_FILENO macros in <unistd.h>. */
61cd9dc9
LC		 61/* Cygwin 1.7.1 declares symlinkat in <stdio.h>, not in <unistd.h>. */
62/* But avoid namespace pollution on glibc systems. */
63#if (!(defined SEEK_CUR && defined SEEK_END && defined SEEK_SET) \
0f00f2c3
LC		 64 || ((@GNULIB_SYMLINKAT@ || defined GNULIB_POSIXCHECK) \
65 && defined __CYGWIN__)) \
61cd9dc9 66 && ! defined __GLIBC__
9b36a80c
LC		 67# include <stdio.h>
68#endif
69
61cd9dc9
LC		 70/* Cygwin 1.7.1 declares unlinkat in <fcntl.h>, not in <unistd.h>. */
71/* But avoid namespace pollution on glibc systems. */
0f00f2c3
LC		 72#if (@GNULIB_UNLINKAT@ || defined GNULIB_POSIXCHECK) && defined __CYGWIN__ \
73 && ! defined __GLIBC__
61cd9dc9
LC		 74# include <fcntl.h>
75#endif
76
9b36a80c 77/* mingw fails to declare _exit in <unistd.h>. */
35428fb6
LC		 78/* mingw, MSVC, BeOS, Haiku declare environ in <stdlib.h>, not in
79 <unistd.h>. */
61cd9dc9
LC		 80/* Solaris declares getcwd not only in <unistd.h> but also in <stdlib.h>. */
81/* But avoid namespace pollution on glibc systems. */
82#ifndef __GLIBC__
83# include <stdlib.h>
84#endif
9b36a80c 85
35428fb6 86/* Native Windows platforms declare chdir, getcwd, rmdir in
f0007cad
LC		 87 <io.h> and/or <direct.h>, not in <unistd.h>.
88 They also declare access(), chmod(), close(), dup(), dup2(), isatty(),
89 lseek(), read(), unlink(), write() in <io.h>. */
35428fb6
LC		 90#if ((@GNULIB_CHDIR@ || @GNULIB_GETCWD@ || @GNULIB_RMDIR@ \
91 || defined GNULIB_POSIXCHECK) \
61cd9dc9 92 && ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__))
35428fb6
LC		 93# include <io.h> /* mingw32, mingw64 */
94# include <direct.h> /* mingw64, MSVC 9 */
f0007cad
LC		 95#elif (@GNULIB_CLOSE@ || @GNULIB_DUP@ || @GNULIB_DUP2@ || @GNULIB_ISATTY@ \
96 || @GNULIB_LSEEK@ || @GNULIB_READ@ || @GNULIB_UNLINK@ || @GNULIB_WRITE@ \
97 || defined GNULIB_POSIXCHECK) \
98 && ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__)
99# include <io.h>
61cd9dc9
LC		 100#endif
101
49114fd4
LC		 102/* AIX and OSF/1 5.1 declare getdomainname in <netdb.h>, not in <unistd.h>.
103 NonStop Kernel declares gethostname in <netdb.h>, not in <unistd.h>. */
0f00f2c3 104/* But avoid namespace pollution on glibc systems. */
49114fd4
LC		 105#if ((@GNULIB_GETDOMAINNAME@ && (defined _AIX || defined __osf__)) \
106 || (@GNULIB_GETHOSTNAME@ && defined __TANDEM)) \
0f00f2c3
LC		 107 && !defined __GLIBC__
108# include <netdb.h>
109#endif
110
35428fb6
LC		 111/* MSVC defines off_t in <sys/types.h>. */
112#if !@HAVE_UNISTD_H@
113/* Get off_t. */
114# include <sys/types.h>
115#endif
116
dd7d0148
LC		 117#if (@GNULIB_READ@ || @GNULIB_WRITE@ \
118 || @GNULIB_READLINK@ || @GNULIB_READLINKAT@ \
a927b6c1 119 || @GNULIB_PREAD@ || @GNULIB_PWRITE@ || defined GNULIB_POSIXCHECK)
9b36a80c
LC		 120/* Get ssize_t. */
121# include <sys/types.h>
122#endif
123
61cd9dc9
LC		 124/* Get getopt(), optarg, optind, opterr, optopt.
125 But avoid namespace pollution on glibc systems. */
126#if @GNULIB_UNISTD_H_GETOPT@ && !defined __GLIBC__ && !defined _GL_SYSTEM_GETOPT
8912421c
LC		 127# include <getopt.h>
128#endif
129
a927b6c1
LC		 130/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
131
132/* The definition of _GL_ARG_NONNULL is copied here. */
133
134/* The definition of _GL_WARN_ON_USE is copied here. */
135
136
35428fb6
LC		 137/* Hide some function declarations from <winsock2.h>. */
138
139#if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@
140# if !defined _@GUARD_PREFIX@_SYS_SOCKET_H
141# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
142# undef socket
143# define socket socket_used_without_including_sys_socket_h
144# undef connect
145# define connect connect_used_without_including_sys_socket_h
146# undef accept
147# define accept accept_used_without_including_sys_socket_h
148# undef bind
149# define bind bind_used_without_including_sys_socket_h
150# undef getpeername
151# define getpeername getpeername_used_without_including_sys_socket_h
152# undef getsockname
153# define getsockname getsockname_used_without_including_sys_socket_h
154# undef getsockopt
155# define getsockopt getsockopt_used_without_including_sys_socket_h
156# undef listen
157# define listen listen_used_without_including_sys_socket_h
158# undef recv
159# define recv recv_used_without_including_sys_socket_h
160# undef send
161# define send send_used_without_including_sys_socket_h
162# undef recvfrom
163# define recvfrom recvfrom_used_without_including_sys_socket_h
164# undef sendto
165# define sendto sendto_used_without_including_sys_socket_h
166# undef setsockopt
167# define setsockopt setsockopt_used_without_including_sys_socket_h
168# undef shutdown
169# define shutdown shutdown_used_without_including_sys_socket_h
170# else
171 _GL_WARN_ON_USE (socket,
172 "socket() used without including <sys/socket.h>");
173 _GL_WARN_ON_USE (connect,
174 "connect() used without including <sys/socket.h>");
175 _GL_WARN_ON_USE (accept,
176 "accept() used without including <sys/socket.h>");
177 _GL_WARN_ON_USE (bind,
178 "bind() used without including <sys/socket.h>");
179 _GL_WARN_ON_USE (getpeername,
180 "getpeername() used without including <sys/socket.h>");
181 _GL_WARN_ON_USE (getsockname,
182 "getsockname() used without including <sys/socket.h>");
183 _GL_WARN_ON_USE (getsockopt,
184 "getsockopt() used without including <sys/socket.h>");
185 _GL_WARN_ON_USE (listen,
186 "listen() used without including <sys/socket.h>");
187 _GL_WARN_ON_USE (recv,
188 "recv() used without including <sys/socket.h>");
189 _GL_WARN_ON_USE (send,
190 "send() used without including <sys/socket.h>");
191 _GL_WARN_ON_USE (recvfrom,
192 "recvfrom() used without including <sys/socket.h>");
193 _GL_WARN_ON_USE (sendto,
194 "sendto() used without including <sys/socket.h>");
195 _GL_WARN_ON_USE (setsockopt,
196 "setsockopt() used without including <sys/socket.h>");
197 _GL_WARN_ON_USE (shutdown,
198 "shutdown() used without including <sys/socket.h>");
9b36a80c 199# endif
35428fb6
LC		 200# endif
201# if !defined _@GUARD_PREFIX@_SYS_SELECT_H
202# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
203# undef select
204# define select select_used_without_including_sys_select_h
205# else
206 _GL_WARN_ON_USE (select,
207 "select() used without including <sys/select.h>");
9b36a80c
LC		 208# endif
209# endif
210#endif
211
9b36a80c 212
f240aacb
LC		 213/* OS/2 EMX lacks these macros. */
214#ifndef STDIN_FILENO
215# define STDIN_FILENO 0
216#endif
217#ifndef STDOUT_FILENO
218# define STDOUT_FILENO 1
219#endif
220#ifndef STDERR_FILENO
221# define STDERR_FILENO 2
222#endif
223
8912421c
LC		 224/* Ensure *_OK macros exist. */
225#ifndef F_OK
226# define F_OK 0
227# define X_OK 1
228# define W_OK 2
229# define R_OK 4
230#endif
231
232
9b36a80c
LC		 233/* Declare overridden functions. */
234
f4c79b3c
LC		 235
236#if defined GNULIB_POSIXCHECK
237/* The access() function is a security risk. */
238_GL_WARN_ON_USE (access, "the access function is a security risk - "
239 "use the gnulib module faccessat instead");
9b36a80c
LC		 240#endif
241
242
35428fb6
LC		 243#if @GNULIB_CHDIR@
244_GL_CXXALIAS_SYS (chdir, int, (const char *file) _GL_ARG_NONNULL ((1)));
245_GL_CXXALIASWARN (chdir);
246#elif defined GNULIB_POSIXCHECK
247# undef chdir
248# if HAVE_RAW_DECL_CHDIR
249_GL_WARN_ON_USE (chown, "chdir is not always in <unistd.h> - "
250 "use gnulib module chdir for portability");
251# endif
252#endif
253
254
9b36a80c 255#if @GNULIB_CHOWN@
9b36a80c
LC		 256/* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
257 to GID (if GID is not -1). Follow symbolic links.
258 Return 0 if successful, otherwise -1 and errno set.
35428fb6
LC		 259 See the POSIX:2008 specification
260 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/chown.html. */
f4c79b3c
LC		 261# if @REPLACE_CHOWN@
262# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
263# undef chown
264# define chown rpl_chown
265# endif
266_GL_FUNCDECL_RPL (chown, int, (const char *file, uid_t uid, gid_t gid)
267 _GL_ARG_NONNULL ((1)));
268_GL_CXXALIAS_RPL (chown, int, (const char *file, uid_t uid, gid_t gid));
269# else
270# if !@HAVE_CHOWN@
271_GL_FUNCDECL_SYS (chown, int, (const char *file, uid_t uid, gid_t gid)
272 _GL_ARG_NONNULL ((1)));
273# endif
274_GL_CXXALIAS_SYS (chown, int, (const char *file, uid_t uid, gid_t gid));
9b36a80c 275# endif
f4c79b3c 276_GL_CXXALIASWARN (chown);
9b36a80c
LC		 277#elif defined GNULIB_POSIXCHECK
278# undef chown
61cd9dc9
LC		 279# if HAVE_RAW_DECL_CHOWN
280_GL_WARN_ON_USE (chown, "chown fails to follow symlinks on some systems and "
281 "doesn't treat a uid or gid of -1 on some systems - "
282 "use gnulib module chown for portability");
283# endif
9b36a80c
LC		 284#endif
285
286
287#if @GNULIB_CLOSE@
9b36a80c
LC		 288# if @REPLACE_CLOSE@
289/* Automatically included by modules that need a replacement for close. */
f4c79b3c
LC		 290# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
291# undef close
292# define close rpl_close
293# endif
294_GL_FUNCDECL_RPL (close, int, (int fd));
295_GL_CXXALIAS_RPL (close, int, (int fd));
296# else
297_GL_CXXALIAS_SYS (close, int, (int fd));
9b36a80c 298# endif
f4c79b3c 299_GL_CXXALIASWARN (close);
8912421c 300#elif @UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@
9b36a80c
LC		 301# undef close
302# define close close_used_without_requesting_gnulib_module_close
303#elif defined GNULIB_POSIXCHECK
304# undef close
61cd9dc9
LC		 305/* Assume close is always declared. */
306_GL_WARN_ON_USE (close, "close does not portably work on sockets - "
307 "use gnulib module close for portability");
9b36a80c
LC		 308#endif
309
310
35428fb6
LC		 311#if @GNULIB_DUP@
312# if @REPLACE_DUP@
313# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
314# define dup rpl_dup
315# endif
f4c79b3c
LC		 316_GL_FUNCDECL_RPL (dup, int, (int oldfd));
317_GL_CXXALIAS_RPL (dup, int, (int oldfd));
35428fb6 318# else
f4c79b3c 319_GL_CXXALIAS_SYS (dup, int, (int oldfd));
35428fb6 320# endif
f4c79b3c 321_GL_CXXALIASWARN (dup);
35428fb6
LC		 322#elif defined GNULIB_POSIXCHECK
323# undef dup
324# if HAVE_RAW_DECL_DUP
325_GL_WARN_ON_USE (dup, "dup is unportable - "
326 "use gnulib module dup for portability");
327# endif
328#endif
8912421c
LC		 329
330
9b36a80c 331#if @GNULIB_DUP2@
9b36a80c
LC		 332/* Copy the file descriptor OLDFD into file descriptor NEWFD. Do nothing if
333 NEWFD = OLDFD, otherwise close NEWFD first if it is open.
25361e4b 334 Return newfd if successful, otherwise -1 and errno set.
35428fb6
LC		 335 See the POSIX:2008 specification
336 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/dup2.html>. */
f4c79b3c
LC		 337# if @REPLACE_DUP2@
338# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
339# define dup2 rpl_dup2
340# endif
341_GL_FUNCDECL_RPL (dup2, int, (int oldfd, int newfd));
342_GL_CXXALIAS_RPL (dup2, int, (int oldfd, int newfd));
343# else
344# if !@HAVE_DUP2@
345_GL_FUNCDECL_SYS (dup2, int, (int oldfd, int newfd));
346# endif
347_GL_CXXALIAS_SYS (dup2, int, (int oldfd, int newfd));
9b36a80c 348# endif
f4c79b3c 349_GL_CXXALIASWARN (dup2);
9b36a80c
LC		 350#elif defined GNULIB_POSIXCHECK
351# undef dup2
61cd9dc9
LC		 352# if HAVE_RAW_DECL_DUP2
353_GL_WARN_ON_USE (dup2, "dup2 is unportable - "
354 "use gnulib module dup2 for portability");
355# endif
9b36a80c
LC		 356#endif
357
358
8912421c
LC		 359#if @GNULIB_DUP3@
360/* Copy the file descriptor OLDFD into file descriptor NEWFD, with the
361 specified flags.
362 The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
363 and O_TEXT, O_BINARY (defined in "binary-io.h").
364 Close NEWFD first if it is open.
365 Return newfd if successful, otherwise -1 and errno set.
366 See the Linux man page at
367 <http://www.kernel.org/doc/man-pages/online/pages/man2/dup3.2.html>. */
368# if @HAVE_DUP3@
f4c79b3c
LC		 369# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
370# define dup3 rpl_dup3
371# endif
372_GL_FUNCDECL_RPL (dup3, int, (int oldfd, int newfd, int flags));
373_GL_CXXALIAS_RPL (dup3, int, (int oldfd, int newfd, int flags));
374# else
375_GL_FUNCDECL_SYS (dup3, int, (int oldfd, int newfd, int flags));
376_GL_CXXALIAS_SYS (dup3, int, (int oldfd, int newfd, int flags));
8912421c 377# endif
f4c79b3c 378_GL_CXXALIASWARN (dup3);
8912421c
LC		 379#elif defined GNULIB_POSIXCHECK
380# undef dup3
61cd9dc9
LC		 381# if HAVE_RAW_DECL_DUP3
382_GL_WARN_ON_USE (dup3, "dup3 is unportable - "
383 "use gnulib module dup3 for portability");
384# endif
8912421c
LC		 385#endif
386
387
9b36a80c
LC		 388#if @GNULIB_ENVIRON@
389# if !@HAVE_DECL_ENVIRON@
390/* Set of environment variables and values. An array of strings of the form
391 "VARIABLE=VALUE", terminated with a NULL. */
392# if defined __APPLE__ && defined __MACH__
393# include <crt_externs.h>
394# define environ (*_NSGetEnviron ())
395# else
f4c79b3c
LC		 396# ifdef __cplusplus
397extern "C" {
398# endif
9b36a80c 399extern char **environ;
f4c79b3c
LC		 400# ifdef __cplusplus
401}
402# endif
9b36a80c
LC		 403# endif
404# endif
405#elif defined GNULIB_POSIXCHECK
61cd9dc9
LC		 406# if HAVE_RAW_DECL_ENVIRON
407static inline char ***
408rpl_environ (void)
409{
410 return &environ;
411}
412_GL_WARN_ON_USE (rpl_environ, "environ is unportable - "
413 "use gnulib module environ for portability");
414# undef environ
415# define environ (*rpl_environ ())
416# endif
9b36a80c
LC		 417#endif
418
419
420#if @GNULIB_EUIDACCESS@
8912421c 421/* Like access(), except that it uses the effective user id and group id of
9b36a80c 422 the current process. */
f4c79b3c
LC		 423# if !@HAVE_EUIDACCESS@
424_GL_FUNCDECL_SYS (euidaccess, int, (const char *filename, int mode)
425 _GL_ARG_NONNULL ((1)));
426# endif
427_GL_CXXALIAS_SYS (euidaccess, int, (const char *filename, int mode));
428_GL_CXXALIASWARN (euidaccess);
429# if defined GNULIB_POSIXCHECK
430/* Like access(), this function is a security risk. */
431_GL_WARN_ON_USE (euidaccess, "the euidaccess function is a security risk - "
432 "use the gnulib module faccessat instead");
9b36a80c
LC		 433# endif
434#elif defined GNULIB_POSIXCHECK
435# undef euidaccess
61cd9dc9
LC		 436# if HAVE_RAW_DECL_EUIDACCESS
437_GL_WARN_ON_USE (euidaccess, "euidaccess is unportable - "
438 "use gnulib module euidaccess for portability");
439# endif
9b36a80c
LC		 440#endif
441
442
8912421c
LC		 443#if @GNULIB_FACCESSAT@
444# if !@HAVE_FACCESSAT@
f4c79b3c
LC		 445_GL_FUNCDECL_SYS (faccessat, int,
446 (int fd, char const *file, int mode, int flag)
447 _GL_ARG_NONNULL ((2)));
8912421c 448# endif
f4c79b3c
LC		 449_GL_CXXALIAS_SYS (faccessat, int,
450 (int fd, char const *file, int mode, int flag));
451_GL_CXXALIASWARN (faccessat);
8912421c
LC		 452#elif defined GNULIB_POSIXCHECK
453# undef faccessat
61cd9dc9
LC		 454# if HAVE_RAW_DECL_FACCESSAT
455_GL_WARN_ON_USE (faccessat, "faccessat is not portable - "
456 "use gnulib module faccessat for portability");
457# endif
8912421c
LC		 458#endif
459
460
9b36a80c 461#if @GNULIB_FCHDIR@
9b36a80c
LC		 462/* Change the process' current working directory to the directory on which
463 the given file descriptor is open.
464 Return 0 if successful, otherwise -1 and errno set.
35428fb6
LC		 465 See the POSIX:2008 specification
466 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/fchdir.html>. */
a927b6c1
LC		 467# if ! @HAVE_FCHDIR@
468_GL_FUNCDECL_SYS (fchdir, int, (int /*fd*/));
9b36a80c 469
8912421c 470/* Gnulib internal hooks needed to maintain the fchdir metadata. */
f4c79b3c 471_GL_EXTERN_C int _gl_register_fd (int fd, const char *filename)
1cd4fffc 472 _GL_ARG_NONNULL ((2));
f4c79b3c
LC		 473_GL_EXTERN_C void _gl_unregister_fd (int fd);
474_GL_EXTERN_C int _gl_register_dup (int oldfd, int newfd);
475_GL_EXTERN_C const char *_gl_directory_name (int fd);
9b36a80c 476
ab4d62ad
LC		 477# else
478# if !@HAVE_DECL_FCHDIR@
479_GL_FUNCDECL_SYS (fchdir, int, (int /*fd*/));
480# endif
9b36a80c 481# endif
a927b6c1 482_GL_CXXALIAS_SYS (fchdir, int, (int /*fd*/));
f4c79b3c 483_GL_CXXALIASWARN (fchdir);
9b36a80c
LC		 484#elif defined GNULIB_POSIXCHECK
485# undef fchdir
61cd9dc9
LC		 486# if HAVE_RAW_DECL_FCHDIR
487_GL_WARN_ON_USE (fchdir, "fchdir is unportable - "
488 "use gnulib module fchdir for portability");
489# endif
9b36a80c
LC		 490#endif
491
492
8912421c
LC		 493#if @GNULIB_FCHOWNAT@
494# if @REPLACE_FCHOWNAT@
f4c79b3c
LC		 495# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
496# undef fchownat
497# define fchownat rpl_fchownat
498# endif
499_GL_FUNCDECL_RPL (fchownat, int, (int fd, char const *file,
500 uid_t owner, gid_t group, int flag)
501 _GL_ARG_NONNULL ((2)));
502_GL_CXXALIAS_RPL (fchownat, int, (int fd, char const *file,
503 uid_t owner, gid_t group, int flag));
504# else
505# if !@HAVE_FCHOWNAT@
506_GL_FUNCDECL_SYS (fchownat, int, (int fd, char const *file,
507 uid_t owner, gid_t group, int flag)
508 _GL_ARG_NONNULL ((2)));
509# endif
510_GL_CXXALIAS_SYS (fchownat, int, (int fd, char const *file,
511 uid_t owner, gid_t group, int flag));
8912421c 512# endif
f4c79b3c 513_GL_CXXALIASWARN (fchownat);
8912421c
LC		 514#elif defined GNULIB_POSIXCHECK
515# undef fchownat
61cd9dc9
LC		 516# if HAVE_RAW_DECL_FCHOWNAT
517_GL_WARN_ON_USE (fchownat, "fchownat is not portable - "
518 "use gnulib module openat for portability");
519# endif
8912421c
LC		 520#endif
521
522
35428fb6 523#if @GNULIB_FDATASYNC@
9b36a80c
LC		 524/* Synchronize changes to a file.
525 Return 0 if successful, otherwise -1 and errno set.
35428fb6
LC		 526 See POSIX:2008 specification
527 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/fdatasync.html>. */
528# if !@HAVE_FDATASYNC@ || !@HAVE_DECL_FDATASYNC@
529_GL_FUNCDECL_SYS (fdatasync, int, (int fd));
530# endif
531_GL_CXXALIAS_SYS (fdatasync, int, (int fd));
532_GL_CXXALIASWARN (fdatasync);
533#elif defined GNULIB_POSIXCHECK
534# undef fdatasync
535# if HAVE_RAW_DECL_FDATASYNC
536_GL_WARN_ON_USE (fdatasync, "fdatasync is unportable - "
537 "use gnulib module fdatasync for portability");
538# endif
539#endif
540
541
542#if @GNULIB_FSYNC@
543/* Synchronize changes, including metadata, to a file.
544 Return 0 if successful, otherwise -1 and errno set.
545 See POSIX:2008 specification
546 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/fsync.html>. */
9b36a80c 547# if !@HAVE_FSYNC@
f4c79b3c 548_GL_FUNCDECL_SYS (fsync, int, (int fd));
9b36a80c 549# endif
f4c79b3c
LC		 550_GL_CXXALIAS_SYS (fsync, int, (int fd));
551_GL_CXXALIASWARN (fsync);
9b36a80c
LC		 552#elif defined GNULIB_POSIXCHECK
553# undef fsync
61cd9dc9
LC		 554# if HAVE_RAW_DECL_FSYNC
555_GL_WARN_ON_USE (fsync, "fsync is unportable - "
556 "use gnulib module fsync for portability");
557# endif
9b36a80c
LC		 558#endif
559
560
561#if @GNULIB_FTRUNCATE@
9b36a80c
LC		 562/* Change the size of the file to which FD is opened to become equal to LENGTH.
563 Return 0 if successful, otherwise -1 and errno set.
35428fb6
LC		 564 See the POSIX:2008 specification
565 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/ftruncate.html>. */
f4c79b3c
LC		 566# if !@HAVE_FTRUNCATE@
567_GL_FUNCDECL_SYS (ftruncate, int, (int fd, off_t length));
9b36a80c 568# endif
f4c79b3c
LC		 569_GL_CXXALIAS_SYS (ftruncate, int, (int fd, off_t length));
570_GL_CXXALIASWARN (ftruncate);
9b36a80c
LC		 571#elif defined GNULIB_POSIXCHECK
572# undef ftruncate
61cd9dc9
LC		 573# if HAVE_RAW_DECL_FTRUNCATE
574_GL_WARN_ON_USE (ftruncate, "ftruncate is unportable - "
575 "use gnulib module ftruncate for portability");
576# endif
9b36a80c
LC		 577#endif
578
579
580#if @GNULIB_GETCWD@
9b36a80c
LC		 581/* Get the name of the current working directory, and put it in SIZE bytes
582 of BUF.
583 Return BUF if successful, or NULL if the directory couldn't be determined
584 or SIZE was too small.
35428fb6
LC		 585 See the POSIX:2008 specification
586 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/getcwd.html>.
9b36a80c
LC		 587 Additionally, the gnulib module 'getcwd' guarantees the following GNU
588 extension: If BUF is NULL, an array is allocated with 'malloc'; the array
589 is SIZE bytes long, unless SIZE == 0, in which case it is as big as
590 necessary. */
f4c79b3c
LC		 591# if @REPLACE_GETCWD@
592# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
593# define getcwd rpl_getcwd
594# endif
595_GL_FUNCDECL_RPL (getcwd, char *, (char *buf, size_t size));
596_GL_CXXALIAS_RPL (getcwd, char *, (char *buf, size_t size));
597# else
a927b6c1
LC		 598/* Need to cast, because on mingw, the second parameter is
599 int size. */
600_GL_CXXALIAS_SYS_CAST (getcwd, char *, (char *buf, size_t size));
9b36a80c 601# endif
f4c79b3c 602_GL_CXXALIASWARN (getcwd);
9b36a80c
LC		 603#elif defined GNULIB_POSIXCHECK
604# undef getcwd
61cd9dc9
LC		 605# if HAVE_RAW_DECL_GETCWD
606_GL_WARN_ON_USE (getcwd, "getcwd is unportable - "
607 "use gnulib module getcwd for portability");
608# endif
9b36a80c
LC		 609#endif
610
611
612#if @GNULIB_GETDOMAINNAME@
613/* Return the NIS domain name of the machine.
614 WARNING! The NIS domain name is unrelated to the fully qualified host name
615 of the machine. It is also unrelated to email addresses.
616 WARNING! The NIS domain name is usually the empty string or "(none)" when
617 not using NIS.
618
619 Put up to LEN bytes of the NIS domain name into NAME.
620 Null terminate it if the name is shorter than LEN.
621 If the NIS domain name is longer than LEN, set errno = EINVAL and return -1.
622 Return 0 if successful, otherwise set errno and return -1. */
0f00f2c3
LC		 623# if @REPLACE_GETDOMAINNAME@
624# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
625# undef getdomainname
626# define getdomainname rpl_getdomainname
627# endif
628_GL_FUNCDECL_RPL (getdomainname, int, (char *name, size_t len)
629 _GL_ARG_NONNULL ((1)));
630_GL_CXXALIAS_RPL (getdomainname, int, (char *name, size_t len));
631# else
632# if !@HAVE_DECL_GETDOMAINNAME@
f4c79b3c
LC		 633_GL_FUNCDECL_SYS (getdomainname, int, (char *name, size_t len)
634 _GL_ARG_NONNULL ((1)));
0f00f2c3
LC		 635# endif
636_GL_CXXALIAS_SYS (getdomainname, int, (char *name, size_t len));
9b36a80c 637# endif
f4c79b3c 638_GL_CXXALIASWARN (getdomainname);
9b36a80c
LC		 639#elif defined GNULIB_POSIXCHECK
640# undef getdomainname
61cd9dc9
LC		 641# if HAVE_RAW_DECL_GETDOMAINNAME
642_GL_WARN_ON_USE (getdomainname, "getdomainname is unportable - "
643 "use gnulib module getdomainname for portability");
644# endif
9b36a80c
LC		 645#endif
646
647
648#if @GNULIB_GETDTABLESIZE@
8912421c
LC		 649/* Return the maximum number of file descriptors in the current process.
650 In POSIX, this is same as sysconf (_SC_OPEN_MAX). */
f4c79b3c
LC		 651# if !@HAVE_GETDTABLESIZE@
652_GL_FUNCDECL_SYS (getdtablesize, int, (void));
9b36a80c 653# endif
f4c79b3c
LC		 654_GL_CXXALIAS_SYS (getdtablesize, int, (void));
655_GL_CXXALIASWARN (getdtablesize);
9b36a80c
LC		 656#elif defined GNULIB_POSIXCHECK
657# undef getdtablesize
61cd9dc9
LC		 658# if HAVE_RAW_DECL_GETDTABLESIZE
659_GL_WARN_ON_USE (getdtablesize, "getdtablesize is unportable - "
660 "use gnulib module getdtablesize for portability");
661# endif
9b36a80c
LC		 662#endif
663
664
f29ded4b 665#if @GNULIB_GETGROUPS@
f29ded4b
LC		 666/* Return the supplemental groups that the current process belongs to.
667 It is unspecified whether the effective group id is in the list.
668 If N is 0, return the group count; otherwise, N describes how many
669 entries are available in GROUPS. Return -1 and set errno if N is
670 not 0 and not large enough. Fails with ENOSYS on some systems. */
f4c79b3c
LC		 671# if @REPLACE_GETGROUPS@
672# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
673# undef getgroups
674# define getgroups rpl_getgroups
675# endif
676_GL_FUNCDECL_RPL (getgroups, int, (int n, gid_t *groups));
677_GL_CXXALIAS_RPL (getgroups, int, (int n, gid_t *groups));
678# else
679# if !@HAVE_GETGROUPS@
680_GL_FUNCDECL_SYS (getgroups, int, (int n, gid_t *groups));
681# endif
682_GL_CXXALIAS_SYS (getgroups, int, (int n, gid_t *groups));
f29ded4b 683# endif
f4c79b3c 684_GL_CXXALIASWARN (getgroups);
f29ded4b
LC		 685#elif defined GNULIB_POSIXCHECK
686# undef getgroups
61cd9dc9
LC		 687# if HAVE_RAW_DECL_GETGROUPS
688_GL_WARN_ON_USE (getgroups, "getgroups is unportable - "
689 "use gnulib module getgroups for portability");
690# endif
f29ded4b
LC		 691#endif
692
693
9b36a80c
LC		 694#if @GNULIB_GETHOSTNAME@
695/* Return the standard host name of the machine.
696 WARNING! The host name may or may not be fully qualified.
697
698 Put up to LEN bytes of the host name into NAME.
699 Null terminate it if the name is shorter than LEN.
700 If the host name is longer than LEN, set errno = EINVAL and return -1.
701 Return 0 if successful, otherwise set errno and return -1. */
702# if @UNISTD_H_HAVE_WINSOCK2_H@
f4c79b3c
LC		 703# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
704# undef gethostname
705# define gethostname rpl_gethostname
706# endif
707_GL_FUNCDECL_RPL (gethostname, int, (char *name, size_t len)
708 _GL_ARG_NONNULL ((1)));
709_GL_CXXALIAS_RPL (gethostname, int, (char *name, size_t len));
710# else
711# if !@HAVE_GETHOSTNAME@
712_GL_FUNCDECL_SYS (gethostname, int, (char *name, size_t len)
713 _GL_ARG_NONNULL ((1)));
714# endif
ab4d62ad
LC		 715/* Need to cast, because on Solaris 10 and OSF/1 5.1 systems, the second
716 parameter is
f4c79b3c
LC		 717 int len. */
718_GL_CXXALIAS_SYS_CAST (gethostname, int, (char *name, size_t len));
9b36a80c 719# endif
f4c79b3c 720_GL_CXXALIASWARN (gethostname);
9b36a80c
LC		 721#elif @UNISTD_H_HAVE_WINSOCK2_H@
722# undef gethostname
723# define gethostname gethostname_used_without_requesting_gnulib_module_gethostname
724#elif defined GNULIB_POSIXCHECK
725# undef gethostname
61cd9dc9
LC		 726# if HAVE_RAW_DECL_GETHOSTNAME
727_GL_WARN_ON_USE (gethostname, "gethostname is unportable - "
728 "use gnulib module gethostname for portability");
729# endif
730#endif
731
732
733#if @GNULIB_GETLOGIN@
734/* Returns the user's login name, or NULL if it cannot be found. Upon error,
735 returns NULL with errno set.
736
737 See <http://www.opengroup.org/susv3xsh/getlogin.html>.
738
739 Most programs don't need to use this function, because the information is
740 available through environment variables:
741 ${LOGNAME-$USER} on Unix platforms,
742 $USERNAME on native Windows platforms.
743 */
744# if !@HAVE_GETLOGIN@
f4c79b3c 745_GL_FUNCDECL_SYS (getlogin, char *, (void));
61cd9dc9 746# endif
f4c79b3c
LC		 747_GL_CXXALIAS_SYS (getlogin, char *, (void));
748_GL_CXXALIASWARN (getlogin);
61cd9dc9
LC		 749#elif defined GNULIB_POSIXCHECK
750# undef getlogin
751# if HAVE_RAW_DECL_GETLOGIN
752_GL_WARN_ON_USE (getlogin, "getlogin is unportable - "
753 "use gnulib module getlogin for portability");
754# endif
9b36a80c
LC		 755#endif
756
757
758#if @GNULIB_GETLOGIN_R@
759/* Copies the user's login name to NAME.
760 The array pointed to by NAME has room for SIZE bytes.
761
762 Returns 0 if successful. Upon error, an error number is returned, or -1 in
763 the case that the login name cannot be found but no specific error is
764 provided (this case is hopefully rare but is left open by the POSIX spec).
765
766 See <http://www.opengroup.org/susv3xsh/getlogin.html>.
61cd9dc9
LC		 767
768 Most programs don't need to use this function, because the information is
769 available through environment variables:
770 ${LOGNAME-$USER} on Unix platforms,
771 $USERNAME on native Windows platforms.
9b36a80c 772 */
49114fd4
LC		 773# if @REPLACE_GETLOGIN_R@
774# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
775# define getlogin_r rpl_getlogin_r
776# endif
777_GL_FUNCDECL_RPL (getlogin_r, int, (char *name, size_t size)
778 _GL_ARG_NONNULL ((1)));
779_GL_CXXALIAS_RPL (getlogin_r, int, (char *name, size_t size));
780# else
781# if !@HAVE_DECL_GETLOGIN_R@
f4c79b3c
LC		 782_GL_FUNCDECL_SYS (getlogin_r, int, (char *name, size_t size)
783 _GL_ARG_NONNULL ((1)));
49114fd4 784# endif
f4c79b3c
LC		 785/* Need to cast, because on Solaris 10 systems, the second argument is
786 int size. */
787_GL_CXXALIAS_SYS_CAST (getlogin_r, int, (char *name, size_t size));
49114fd4 788# endif
f4c79b3c 789_GL_CXXALIASWARN (getlogin_r);
9b36a80c
LC		 790#elif defined GNULIB_POSIXCHECK
791# undef getlogin_r
61cd9dc9
LC		 792# if HAVE_RAW_DECL_GETLOGIN_R
793_GL_WARN_ON_USE (getlogin_r, "getlogin_r is unportable - "
794 "use gnulib module getlogin_r for portability");
795# endif
9b36a80c
LC		 796#endif
797
798
799#if @GNULIB_GETPAGESIZE@
800# if @REPLACE_GETPAGESIZE@
f4c79b3c
LC		 801# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
802# define getpagesize rpl_getpagesize
9b36a80c 803# endif
f4c79b3c
LC		 804_GL_FUNCDECL_RPL (getpagesize, int, (void));
805_GL_CXXALIAS_RPL (getpagesize, int, (void));
806# else
807# if !@HAVE_GETPAGESIZE@
808# if !defined getpagesize
809/* This is for POSIX systems. */
810# if !defined _gl_getpagesize && defined _SC_PAGESIZE
811# if ! (defined __VMS && __VMS_VER < 70000000)
812# define _gl_getpagesize() sysconf (_SC_PAGESIZE)
813# endif
814# endif
9b36a80c 815/* This is for older VMS. */
f4c79b3c
LC		 816# if !defined _gl_getpagesize && defined __VMS
817# ifdef __ALPHA
818# define _gl_getpagesize() 8192
819# else
820# define _gl_getpagesize() 512
821# endif
822# endif
9b36a80c 823/* This is for BeOS. */
f4c79b3c
LC		 824# if !defined _gl_getpagesize && @HAVE_OS_H@
825# include <OS.h>
826# if defined B_PAGE_SIZE
827# define _gl_getpagesize() B_PAGE_SIZE
828# endif
829# endif
9b36a80c 830/* This is for AmigaOS4.0. */
f4c79b3c
LC		 831# if !defined _gl_getpagesize && defined __amigaos4__
832# define _gl_getpagesize() 2048
833# endif
9b36a80c 834/* This is for older Unix systems. */
f4c79b3c
LC		 835# if !defined _gl_getpagesize && @HAVE_SYS_PARAM_H@
836# include <sys/param.h>
837# ifdef EXEC_PAGESIZE
838# define _gl_getpagesize() EXEC_PAGESIZE
839# else
840# ifdef NBPG
841# ifndef CLSIZE
842# define CLSIZE 1
843# endif
844# define _gl_getpagesize() (NBPG * CLSIZE)
845# else
846# ifdef NBPC
847# define _gl_getpagesize() NBPC
848# endif
849# endif
9b36a80c 850# endif
f4c79b3c
LC		 851# endif
852# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
853# define getpagesize() _gl_getpagesize ()
9b36a80c 854# else
49114fd4 855# if !GNULIB_defined_getpagesize_function
f4c79b3c
LC		 856static inline int
857getpagesize ()
858{
859 return _gl_getpagesize ();
860}
49114fd4
LC		 861# define GNULIB_defined_getpagesize_function 1
862# endif
9b36a80c
LC		 863# endif
864# endif
865# endif
f4c79b3c
LC		 866/* Need to cast, because on Cygwin 1.5.x systems, the return type is size_t. */
867_GL_CXXALIAS_SYS_CAST (getpagesize, int, (void));
9b36a80c 868# endif
a927b6c1 869# if @HAVE_DECL_GETPAGESIZE@
f4c79b3c 870_GL_CXXALIASWARN (getpagesize);
a927b6c1 871# endif
9b36a80c
LC		 872#elif defined GNULIB_POSIXCHECK
873# undef getpagesize
61cd9dc9
LC		 874# if HAVE_RAW_DECL_GETPAGESIZE
875_GL_WARN_ON_USE (getpagesize, "getpagesize is unportable - "
876 "use gnulib module getpagesize for portability");
877# endif
9b36a80c
LC		 878#endif
879
880
881#if @GNULIB_GETUSERSHELL@
9b36a80c
LC		 882/* Return the next valid login shell on the system, or NULL when the end of
883 the list has been reached. */
a927b6c1 884# if !@HAVE_DECL_GETUSERSHELL@
f4c79b3c 885_GL_FUNCDECL_SYS (getusershell, char *, (void));
9b36a80c 886# endif
f4c79b3c
LC		 887_GL_CXXALIAS_SYS (getusershell, char *, (void));
888_GL_CXXALIASWARN (getusershell);
9b36a80c
LC		 889#elif defined GNULIB_POSIXCHECK
890# undef getusershell
61cd9dc9
LC		 891# if HAVE_RAW_DECL_GETUSERSHELL
892_GL_WARN_ON_USE (getusershell, "getusershell is unportable - "
893 "use gnulib module getusershell for portability");
894# endif
f4c79b3c
LC		 895#endif
896
897#if @GNULIB_GETUSERSHELL@
898/* Rewind to pointer that is advanced at each getusershell() call. */
a927b6c1 899# if !@HAVE_DECL_GETUSERSHELL@
f4c79b3c
LC		 900_GL_FUNCDECL_SYS (setusershell, void, (void));
901# endif
902_GL_CXXALIAS_SYS (setusershell, void, (void));
903_GL_CXXALIASWARN (setusershell);
904#elif defined GNULIB_POSIXCHECK
9b36a80c 905# undef setusershell
61cd9dc9
LC		 906# if HAVE_RAW_DECL_SETUSERSHELL
907_GL_WARN_ON_USE (setusershell, "setusershell is unportable - "
908 "use gnulib module getusershell for portability");
909# endif
f4c79b3c
LC		 910#endif
911
912#if @GNULIB_GETUSERSHELL@
913/* Free the pointer that is advanced at each getusershell() call and
914 associated resources. */
a927b6c1 915# if !@HAVE_DECL_GETUSERSHELL@
f4c79b3c
LC		 916_GL_FUNCDECL_SYS (endusershell, void, (void));
917# endif
918_GL_CXXALIAS_SYS (endusershell, void, (void));
919_GL_CXXALIASWARN (endusershell);
920#elif defined GNULIB_POSIXCHECK
9b36a80c 921# undef endusershell
61cd9dc9
LC		 922# if HAVE_RAW_DECL_ENDUSERSHELL
923_GL_WARN_ON_USE (endusershell, "endusershell is unportable - "
924 "use gnulib module getusershell for portability");
925# endif
9b36a80c
LC		 926#endif
927
928
3d458a81
AW		 929#if @GNULIB_GROUP_MEMBER@
930/* Determine whether group id is in calling user's group list. */
931# if !@HAVE_GROUP_MEMBER@
932_GL_FUNCDECL_SYS (group_member, int, (gid_t gid));
933# endif
934_GL_CXXALIAS_SYS (group_member, int, (gid_t gid));
935_GL_CXXALIASWARN (group_member);
936#elif defined GNULIB_POSIXCHECK
937# undef group_member
938# if HAVE_RAW_DECL_GROUP_MEMBER
939_GL_WARN_ON_USE (group_member, "group_member is unportable - "
940 "use gnulib module group-member for portability");
941# endif
942#endif
943
944
f0007cad
LC		 945#if @GNULIB_ISATTY@
946# if @REPLACE_ISATTY@
947# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
948# undef isatty
949# define isatty rpl_isatty
950# endif
951_GL_FUNCDECL_RPL (isatty, int, (int fd));
952_GL_CXXALIAS_RPL (isatty, int, (int fd));
953# else
954_GL_CXXALIAS_SYS (isatty, int, (int fd));
955# endif
956_GL_CXXALIASWARN (isatty);
957#elif defined GNULIB_POSIXCHECK
958# undef isatty
959# if HAVE_RAW_DECL_ISATTY
960_GL_WARN_ON_USE (isatty, "isatty has portability problems on native Windows - "
961 "use gnulib module isatty for portability");
962# endif
963#endif
964
965
9b36a80c 966#if @GNULIB_LCHOWN@
9b36a80c
LC		 967/* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
968 to GID (if GID is not -1). Do not follow symbolic links.
969 Return 0 if successful, otherwise -1 and errno set.
35428fb6
LC		 970 See the POSIX:2008 specification
971 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/lchown.html>. */
f4c79b3c
LC		 972# if @REPLACE_LCHOWN@
973# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
974# undef lchown
975# define lchown rpl_lchown
976# endif
977_GL_FUNCDECL_RPL (lchown, int, (char const *file, uid_t owner, gid_t group)
978 _GL_ARG_NONNULL ((1)));
979_GL_CXXALIAS_RPL (lchown, int, (char const *file, uid_t owner, gid_t group));
980# else
981# if !@HAVE_LCHOWN@
982_GL_FUNCDECL_SYS (lchown, int, (char const *file, uid_t owner, gid_t group)
983 _GL_ARG_NONNULL ((1)));
984# endif
985_GL_CXXALIAS_SYS (lchown, int, (char const *file, uid_t owner, gid_t group));
9b36a80c 986# endif
f4c79b3c 987_GL_CXXALIASWARN (lchown);
9b36a80c
LC		 988#elif defined GNULIB_POSIXCHECK
989# undef lchown
61cd9dc9
LC		 990# if HAVE_RAW_DECL_LCHOWN
991_GL_WARN_ON_USE (lchown, "lchown is unportable to pre-POSIX.1-2001 systems - "
992 "use gnulib module lchown for portability");
993# endif
9b36a80c
LC		 994#endif
995
996
f240aacb
LC		 997#if @GNULIB_LINK@
998/* Create a new hard link for an existing file.
999 Return 0 if successful, otherwise -1 and errno set.
35428fb6
LC		 1000 See POSIX:2008 specification
1001 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/link.html>. */
f4c79b3c
LC		 1002# if @REPLACE_LINK@
1003# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1004# define link rpl_link
1005# endif
1006_GL_FUNCDECL_RPL (link, int, (const char *path1, const char *path2)
1007 _GL_ARG_NONNULL ((1, 2)));
1008_GL_CXXALIAS_RPL (link, int, (const char *path1, const char *path2));
1009# else
1010# if !@HAVE_LINK@
1011_GL_FUNCDECL_SYS (link, int, (const char *path1, const char *path2)
1012 _GL_ARG_NONNULL ((1, 2)));
1013# endif
1014_GL_CXXALIAS_SYS (link, int, (const char *path1, const char *path2));
f240aacb 1015# endif
f4c79b3c 1016_GL_CXXALIASWARN (link);
f240aacb
LC		 1017#elif defined GNULIB_POSIXCHECK
1018# undef link
61cd9dc9
LC		 1019# if HAVE_RAW_DECL_LINK
1020_GL_WARN_ON_USE (link, "link is unportable - "
1021 "use gnulib module link for portability");
1022# endif
f240aacb
LC		 1023#endif
1024
f4c79b3c 1025
8912421c 1026#if @GNULIB_LINKAT@
8912421c
LC		 1027/* Create a new hard link for an existing file, relative to two
1028 directories. FLAG controls whether symlinks are followed.
1029 Return 0 if successful, otherwise -1 and errno set. */
f4c79b3c
LC		 1030# if @REPLACE_LINKAT@
1031# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1032# undef linkat
1033# define linkat rpl_linkat
1034# endif
1035_GL_FUNCDECL_RPL (linkat, int,
1036 (int fd1, const char *path1, int fd2, const char *path2,
1cd4fffc 1037 int flag)
f4c79b3c
LC		 1038 _GL_ARG_NONNULL ((2, 4)));
1039_GL_CXXALIAS_RPL (linkat, int,
1040 (int fd1, const char *path1, int fd2, const char *path2,
1041 int flag));
1042# else
1043# if !@HAVE_LINKAT@
1044_GL_FUNCDECL_SYS (linkat, int,
1045 (int fd1, const char *path1, int fd2, const char *path2,
1046 int flag)
1047 _GL_ARG_NONNULL ((2, 4)));
1048# endif
1049_GL_CXXALIAS_SYS (linkat, int,
1050 (int fd1, const char *path1, int fd2, const char *path2,
1051 int flag));
8912421c 1052# endif
f4c79b3c 1053_GL_CXXALIASWARN (linkat);
8912421c
LC		 1054#elif defined GNULIB_POSIXCHECK
1055# undef linkat
61cd9dc9
LC		 1056# if HAVE_RAW_DECL_LINKAT
1057_GL_WARN_ON_USE (linkat, "linkat is unportable - "
1058 "use gnulib module linkat for portability");
1059# endif
8912421c 1060#endif
f240aacb 1061
f4c79b3c 1062
9b36a80c 1063#if @GNULIB_LSEEK@
9b36a80c
LC		 1064/* Set the offset of FD relative to SEEK_SET, SEEK_CUR, or SEEK_END.
1065 Return the new offset if successful, otherwise -1 and errno set.
35428fb6
LC		 1066 See the POSIX:2008 specification
1067 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/lseek.html>. */
f4c79b3c
LC		 1068# if @REPLACE_LSEEK@
1069# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1070# define lseek rpl_lseek
1071# endif
1072_GL_FUNCDECL_RPL (lseek, off_t, (int fd, off_t offset, int whence));
1073_GL_CXXALIAS_RPL (lseek, off_t, (int fd, off_t offset, int whence));
1074# else
1075_GL_CXXALIAS_SYS (lseek, off_t, (int fd, off_t offset, int whence));
9b36a80c 1076# endif
f4c79b3c 1077_GL_CXXALIASWARN (lseek);
9b36a80c
LC		 1078#elif defined GNULIB_POSIXCHECK
1079# undef lseek
61cd9dc9
LC		 1080# if HAVE_RAW_DECL_LSEEK
1081_GL_WARN_ON_USE (lseek, "lseek does not fail with ESPIPE on pipes on some "
1082 "systems - use gnulib module lseek for portability");
1083# endif
9b36a80c
LC		 1084#endif
1085
1086
ab4d62ad
LC		 1087#if @GNULIB_PIPE@
1088/* Create a pipe, defaulting to O_BINARY mode.
1089 Store the read-end as fd[0] and the write-end as fd[1].
1090 Return 0 upon success, or -1 with errno set upon failure. */
1091# if !@HAVE_PIPE@
1092_GL_FUNCDECL_SYS (pipe, int, (int fd[2]) _GL_ARG_NONNULL ((1)));
1093# endif
1094_GL_CXXALIAS_SYS (pipe, int, (int fd[2]));
1095_GL_CXXALIASWARN (pipe);
1096#elif defined GNULIB_POSIXCHECK
1097# undef pipe
1098# if HAVE_RAW_DECL_PIPE
1099_GL_WARN_ON_USE (pipe, "pipe is unportable - "
1100 "use gnulib module pipe-posix for portability");
1101# endif
1102#endif
1103
1104
8912421c
LC		 1105#if @GNULIB_PIPE2@
1106/* Create a pipe, applying the given flags when opening the read-end of the
1107 pipe and the write-end of the pipe.
1108 The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
1109 and O_TEXT, O_BINARY (defined in "binary-io.h").
1110 Store the read-end as fd[0] and the write-end as fd[1].
1111 Return 0 upon success, or -1 with errno set upon failure.
1112 See also the Linux man page at
1113 <http://www.kernel.org/doc/man-pages/online/pages/man2/pipe2.2.html>. */
1114# if @HAVE_PIPE2@
f4c79b3c
LC		 1115# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1116# define pipe2 rpl_pipe2
1117# endif
1118_GL_FUNCDECL_RPL (pipe2, int, (int fd[2], int flags) _GL_ARG_NONNULL ((1)));
1119_GL_CXXALIAS_RPL (pipe2, int, (int fd[2], int flags));
1120# else
1121_GL_FUNCDECL_SYS (pipe2, int, (int fd[2], int flags) _GL_ARG_NONNULL ((1)));
1122_GL_CXXALIAS_SYS (pipe2, int, (int fd[2], int flags));
8912421c 1123# endif
f4c79b3c 1124_GL_CXXALIASWARN (pipe2);
8912421c
LC		 1125#elif defined GNULIB_POSIXCHECK
1126# undef pipe2
61cd9dc9
LC		 1127# if HAVE_RAW_DECL_PIPE2
1128_GL_WARN_ON_USE (pipe2, "pipe2 is unportable - "
1129 "use gnulib module pipe2 for portability");
1130# endif
8912421c
LC		 1131#endif
1132
1133
1cd4fffc 1134#if @GNULIB_PREAD@
1cd4fffc
LC		 1135/* Read at most BUFSIZE bytes from FD into BUF, starting at OFFSET.
1136 Return the number of bytes placed into BUF if successful, otherwise
35428fb6
LC		 1137 set errno and return -1. 0 indicates EOF.
1138 See the POSIX:2008 specification
1139 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/pread.html>. */
f4c79b3c
LC		 1140# if @REPLACE_PREAD@
1141# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
231c0e0e 1142# undef pread
f4c79b3c
LC		 1143# define pread rpl_pread
1144# endif
1145_GL_FUNCDECL_RPL (pread, ssize_t,
1146 (int fd, void *buf, size_t bufsize, off_t offset)
1147 _GL_ARG_NONNULL ((2)));
1148_GL_CXXALIAS_RPL (pread, ssize_t,
1149 (int fd, void *buf, size_t bufsize, off_t offset));
1150# else
1151# if !@HAVE_PREAD@
1152_GL_FUNCDECL_SYS (pread, ssize_t,
1153 (int fd, void *buf, size_t bufsize, off_t offset)
1154 _GL_ARG_NONNULL ((2)));
1155# endif
1156_GL_CXXALIAS_SYS (pread, ssize_t,
1157 (int fd, void *buf, size_t bufsize, off_t offset));
1cd4fffc 1158# endif
f4c79b3c 1159_GL_CXXALIASWARN (pread);
1cd4fffc
LC		 1160#elif defined GNULIB_POSIXCHECK
1161# undef pread
61cd9dc9
LC		 1162# if HAVE_RAW_DECL_PREAD
1163_GL_WARN_ON_USE (pread, "pread is unportable - "
1164 "use gnulib module pread for portability");
1165# endif
1cd4fffc
LC		 1166#endif
1167
1168
a927b6c1
LC		 1169#if @GNULIB_PWRITE@
1170/* Write at most BUFSIZE bytes from BUF into FD, starting at OFFSET.
1171 Return the number of bytes written if successful, otherwise
1172 set errno and return -1. 0 indicates nothing written. See the
35428fb6
LC		 1173 POSIX:2008 specification
1174 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/pwrite.html>. */
a927b6c1
LC		 1175# if @REPLACE_PWRITE@
1176# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
231c0e0e 1177# undef pwrite
a927b6c1
LC		 1178# define pwrite rpl_pwrite
1179# endif
1180_GL_FUNCDECL_RPL (pwrite, ssize_t,
1181 (int fd, const void *buf, size_t bufsize, off_t offset)
1182 _GL_ARG_NONNULL ((2)));
1183_GL_CXXALIAS_RPL (pwrite, ssize_t,
1184 (int fd, const void *buf, size_t bufsize, off_t offset));
1185# else
1186# if !@HAVE_PWRITE@
1187_GL_FUNCDECL_SYS (pwrite, ssize_t,
1188 (int fd, const void *buf, size_t bufsize, off_t offset)
1189 _GL_ARG_NONNULL ((2)));
1190# endif
1191_GL_CXXALIAS_SYS (pwrite, ssize_t,
1192 (int fd, const void *buf, size_t bufsize, off_t offset));
1193# endif
1194_GL_CXXALIASWARN (pwrite);
1195#elif defined GNULIB_POSIXCHECK
1196# undef pwrite
1197# if HAVE_RAW_DECL_PWRITE
1198_GL_WARN_ON_USE (pwrite, "pwrite is unportable - "
1199 "use gnulib module pwrite for portability");
1200# endif
1201#endif
1202
1203
dd7d0148
LC		 1204#if @GNULIB_READ@
1205/* Read up to COUNT bytes from file descriptor FD into the buffer starting
35428fb6
LC		 1206 at BUF. See the POSIX:2008 specification
1207 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/read.html>. */
1208# if @REPLACE_READ@
dd7d0148
LC		 1209# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1210# undef read
1211# define read rpl_read
1212# endif
1213_GL_FUNCDECL_RPL (read, ssize_t, (int fd, void *buf, size_t count)
1214 _GL_ARG_NONNULL ((2)));
1215_GL_CXXALIAS_RPL (read, ssize_t, (int fd, void *buf, size_t count));
1216# else
1217/* Need to cast, because on mingw, the third parameter is
1218 unsigned int count
1219 and the return type is 'int'. */
1220_GL_CXXALIAS_SYS_CAST (read, ssize_t, (int fd, void *buf, size_t count));
1221# endif
1222_GL_CXXALIASWARN (read);
1223#endif
1224
1225
9b36a80c
LC		 1226#if @GNULIB_READLINK@
1227/* Read the contents of the symbolic link FILE and place the first BUFSIZE
1228 bytes of it into BUF. Return the number of bytes placed into BUF if
1229 successful, otherwise -1 and errno set.
35428fb6
LC		 1230 See the POSIX:2008 specification
1231 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/readlink.html>. */
f4c79b3c
LC		 1232# if @REPLACE_READLINK@
1233# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1234# define readlink rpl_readlink
1235# endif
1236_GL_FUNCDECL_RPL (readlink, ssize_t,
1237 (const char *file, char *buf, size_t bufsize)
1238 _GL_ARG_NONNULL ((1, 2)));
1239_GL_CXXALIAS_RPL (readlink, ssize_t,
1240 (const char *file, char *buf, size_t bufsize));
1241# else
1242# if !@HAVE_READLINK@
1243_GL_FUNCDECL_SYS (readlink, ssize_t,
1244 (const char *file, char *buf, size_t bufsize)
1245 _GL_ARG_NONNULL ((1, 2)));
1246# endif
1247_GL_CXXALIAS_SYS (readlink, ssize_t,
1248 (const char *file, char *buf, size_t bufsize));
9b36a80c 1249# endif
f4c79b3c 1250_GL_CXXALIASWARN (readlink);
9b36a80c
LC		 1251#elif defined GNULIB_POSIXCHECK
1252# undef readlink
61cd9dc9
LC		 1253# if HAVE_RAW_DECL_READLINK
1254_GL_WARN_ON_USE (readlink, "readlink is unportable - "
1255 "use gnulib module readlink for portability");
1256# endif
9b36a80c
LC		 1257#endif
1258
1259
8912421c
LC		 1260#if @GNULIB_READLINKAT@
1261# if !@HAVE_READLINKAT@
f4c79b3c
LC		 1262_GL_FUNCDECL_SYS (readlinkat, ssize_t,
1263 (int fd, char const *file, char *buf, size_t len)
1264 _GL_ARG_NONNULL ((2, 3)));
8912421c 1265# endif
f4c79b3c
LC		 1266_GL_CXXALIAS_SYS (readlinkat, ssize_t,
1267 (int fd, char const *file, char *buf, size_t len));
1268_GL_CXXALIASWARN (readlinkat);
8912421c
LC		 1269#elif defined GNULIB_POSIXCHECK
1270# undef readlinkat
61cd9dc9
LC		 1271# if HAVE_RAW_DECL_READLINKAT
1272_GL_WARN_ON_USE (readlinkat, "readlinkat is not portable - "
9157d901 1273 "use gnulib module readlinkat for portability");
61cd9dc9 1274# endif
8912421c
LC		 1275#endif
1276
1277
1278#if @GNULIB_RMDIR@
8912421c 1279/* Remove the directory DIR. */
f4c79b3c
LC		 1280# if @REPLACE_RMDIR@
1281# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1282# define rmdir rpl_rmdir
1283# endif
1284_GL_FUNCDECL_RPL (rmdir, int, (char const *name) _GL_ARG_NONNULL ((1)));
1285_GL_CXXALIAS_RPL (rmdir, int, (char const *name));
1286# else
1287_GL_CXXALIAS_SYS (rmdir, int, (char const *name));
8912421c 1288# endif
f4c79b3c 1289_GL_CXXALIASWARN (rmdir);
8912421c
LC		 1290#elif defined GNULIB_POSIXCHECK
1291# undef rmdir
61cd9dc9
LC		 1292# if HAVE_RAW_DECL_RMDIR
1293_GL_WARN_ON_USE (rmdir, "rmdir is unportable - "
1294 "use gnulib module rmdir for portability");
1295# endif
8912421c
LC		 1296#endif
1297
1298
7f1ea859
LC		 1299#if @GNULIB_SETHOSTNAME@
1300/* Set the host name of the machine.
1301 The host name may or may not be fully qualified.
1302
1303 Put LEN bytes of NAME into the host name.
1304 Return 0 if successful, otherwise, set errno and return -1.
1305
1306 Platforms with no ability to set the hostname return -1 and set
1307 errno = ENOSYS. */
1308# if !@HAVE_SETHOSTNAME@ || !@HAVE_DECL_SETHOSTNAME@
1309_GL_FUNCDECL_SYS (sethostname, int, (const char *name, size_t len)
1310 _GL_ARG_NONNULL ((1)));
1311# endif
1312/* Need to cast, because on Solaris 11 2011-10, MacOS X 10.5, IRIX 6.5
1313 and FreeBSD 6.4 the second parameter is int. On Solaris 11
1314 2011-10, the first parameter is not const. */
1315_GL_CXXALIAS_SYS_CAST (sethostname, int, (const char *name, size_t len));
1316_GL_CXXALIASWARN (sethostname);
1317#elif defined GNULIB_POSIXCHECK
1318# undef sethostname
1319# if HAVE_RAW_DECL_SETHOSTNAME
1320_GL_WARN_ON_USE (sethostname, "sethostname is unportable - "
1321 "use gnulib module sethostname for portability");
1322# endif
1323#endif
1324
1325
9b36a80c
LC		 1326#if @GNULIB_SLEEP@
1327/* Pause the execution of the current thread for N seconds.
1328 Returns the number of seconds left to sleep.
35428fb6
LC		 1329 See the POSIX:2008 specification
1330 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/sleep.html>. */
f4c79b3c
LC		 1331# if @REPLACE_SLEEP@
1332# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1333# undef sleep
1334# define sleep rpl_sleep
1335# endif
1336_GL_FUNCDECL_RPL (sleep, unsigned int, (unsigned int n));
1337_GL_CXXALIAS_RPL (sleep, unsigned int, (unsigned int n));
1338# else
1339# if !@HAVE_SLEEP@
1340_GL_FUNCDECL_SYS (sleep, unsigned int, (unsigned int n));
1341# endif
1342_GL_CXXALIAS_SYS (sleep, unsigned int, (unsigned int n));
9b36a80c 1343# endif
f4c79b3c 1344_GL_CXXALIASWARN (sleep);
9b36a80c
LC		 1345#elif defined GNULIB_POSIXCHECK
1346# undef sleep
61cd9dc9
LC		 1347# if HAVE_RAW_DECL_SLEEP
1348_GL_WARN_ON_USE (sleep, "sleep is unportable - "
1349 "use gnulib module sleep for portability");
1350# endif
9b36a80c
LC		 1351#endif
1352
1353
8912421c
LC		 1354#if @GNULIB_SYMLINK@
1355# if @REPLACE_SYMLINK@
f4c79b3c
LC		 1356# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1357# undef symlink
1358# define symlink rpl_symlink
1359# endif
1360_GL_FUNCDECL_RPL (symlink, int, (char const *contents, char const *file)
1361 _GL_ARG_NONNULL ((1, 2)));
1362_GL_CXXALIAS_RPL (symlink, int, (char const *contents, char const *file));
1363# else
1364# if !@HAVE_SYMLINK@
1365_GL_FUNCDECL_SYS (symlink, int, (char const *contents, char const *file)
1366 _GL_ARG_NONNULL ((1, 2)));
1367# endif
1368_GL_CXXALIAS_SYS (symlink, int, (char const *contents, char const *file));
8912421c 1369# endif
f4c79b3c 1370_GL_CXXALIASWARN (symlink);
8912421c
LC		 1371#elif defined GNULIB_POSIXCHECK
1372# undef symlink
61cd9dc9
LC		 1373# if HAVE_RAW_DECL_SYMLINK
1374_GL_WARN_ON_USE (symlink, "symlink is not portable - "
1375 "use gnulib module symlink for portability");
1376# endif
8912421c
LC		 1377#endif
1378
1379
1380#if @GNULIB_SYMLINKAT@
1381# if !@HAVE_SYMLINKAT@
f4c79b3c
LC		 1382_GL_FUNCDECL_SYS (symlinkat, int,
1383 (char const *contents, int fd, char const *file)
1384 _GL_ARG_NONNULL ((1, 3)));
8912421c 1385# endif
f4c79b3c
LC		 1386_GL_CXXALIAS_SYS (symlinkat, int,
1387 (char const *contents, int fd, char const *file));
1388_GL_CXXALIASWARN (symlinkat);
8912421c
LC		 1389#elif defined GNULIB_POSIXCHECK
1390# undef symlinkat
61cd9dc9
LC		 1391# if HAVE_RAW_DECL_SYMLINKAT
1392_GL_WARN_ON_USE (symlinkat, "symlinkat is not portable - "
1393 "use gnulib module symlinkat for portability");
1394# endif
8912421c
LC		 1395#endif
1396
1397
a927b6c1
LC		 1398#if @GNULIB_TTYNAME_R@
1399/* Store at most BUFLEN characters of the pathname of the terminal FD is
1400 open on in BUF. Return 0 on success, otherwise an error number. */
1401# if @REPLACE_TTYNAME_R@
1402# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1403# undef ttyname_r
1404# define ttyname_r rpl_ttyname_r
1405# endif
1406_GL_FUNCDECL_RPL (ttyname_r, int,
1407 (int fd, char *buf, size_t buflen) _GL_ARG_NONNULL ((2)));
1408_GL_CXXALIAS_RPL (ttyname_r, int,
1409 (int fd, char *buf, size_t buflen));
1410# else
ab4d62ad 1411# if !@HAVE_DECL_TTYNAME_R@
a927b6c1
LC		 1412_GL_FUNCDECL_SYS (ttyname_r, int,
1413 (int fd, char *buf, size_t buflen) _GL_ARG_NONNULL ((2)));
1414# endif
1415_GL_CXXALIAS_SYS (ttyname_r, int,
1416 (int fd, char *buf, size_t buflen));
1417# endif
1418_GL_CXXALIASWARN (ttyname_r);
1419#elif defined GNULIB_POSIXCHECK
1420# undef ttyname_r
1421# if HAVE_RAW_DECL_TTYNAME_R
1422_GL_WARN_ON_USE (ttyname_r, "ttyname_r is not portable - "
1423 "use gnulib module ttyname_r for portability");
1424# endif
1425#endif
1426
1427
8912421c
LC		 1428#if @GNULIB_UNLINK@
1429# if @REPLACE_UNLINK@
f4c79b3c
LC		 1430# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1431# undef unlink
1432# define unlink rpl_unlink
1433# endif
1434_GL_FUNCDECL_RPL (unlink, int, (char const *file) _GL_ARG_NONNULL ((1)));
1435_GL_CXXALIAS_RPL (unlink, int, (char const *file));
1436# else
1437_GL_CXXALIAS_SYS (unlink, int, (char const *file));
8912421c 1438# endif
f4c79b3c 1439_GL_CXXALIASWARN (unlink);
8912421c
LC		 1440#elif defined GNULIB_POSIXCHECK
1441# undef unlink
61cd9dc9
LC		 1442# if HAVE_RAW_DECL_UNLINK
1443_GL_WARN_ON_USE (unlink, "unlink is not portable - "
1444 "use gnulib module unlink for portability");
1445# endif
8912421c
LC		 1446#endif
1447
1448
1449#if @GNULIB_UNLINKAT@
1450# if @REPLACE_UNLINKAT@
f4c79b3c
LC		 1451# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1452# undef unlinkat
1453# define unlinkat rpl_unlinkat
1454# endif
1455_GL_FUNCDECL_RPL (unlinkat, int, (int fd, char const *file, int flag)
1456 _GL_ARG_NONNULL ((2)));
1457_GL_CXXALIAS_RPL (unlinkat, int, (int fd, char const *file, int flag));
1458# else
1459# if !@HAVE_UNLINKAT@
1460_GL_FUNCDECL_SYS (unlinkat, int, (int fd, char const *file, int flag)
1461 _GL_ARG_NONNULL ((2)));
1462# endif
1463_GL_CXXALIAS_SYS (unlinkat, int, (int fd, char const *file, int flag));
8912421c 1464# endif
f4c79b3c 1465_GL_CXXALIASWARN (unlinkat);
8912421c
LC		 1466#elif defined GNULIB_POSIXCHECK
1467# undef unlinkat
61cd9dc9
LC		 1468# if HAVE_RAW_DECL_UNLINKAT
1469_GL_WARN_ON_USE (unlinkat, "unlinkat is not portable - "
1470 "use gnulib module openat for portability");
1471# endif
8912421c
LC		 1472#endif
1473
1474
414e4441 1475#if @GNULIB_USLEEP@
414e4441
LC		 1476/* Pause the execution of the current thread for N microseconds.
1477 Returns 0 on completion, or -1 on range error.
1478 See the POSIX:2001 specification
35428fb6 1479 <http://www.opengroup.org/susv3xsh/usleep.html>. */
f4c79b3c
LC		 1480# if @REPLACE_USLEEP@
1481# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1482# undef usleep
1483# define usleep rpl_usleep
1484# endif
1485_GL_FUNCDECL_RPL (usleep, int, (useconds_t n));
1486_GL_CXXALIAS_RPL (usleep, int, (useconds_t n));
1487# else
1488# if !@HAVE_USLEEP@
1489_GL_FUNCDECL_SYS (usleep, int, (useconds_t n));
1490# endif
1491_GL_CXXALIAS_SYS (usleep, int, (useconds_t n));
414e4441 1492# endif
f4c79b3c 1493_GL_CXXALIASWARN (usleep);
414e4441
LC		 1494#elif defined GNULIB_POSIXCHECK
1495# undef usleep
61cd9dc9
LC		 1496# if HAVE_RAW_DECL_USLEEP
1497_GL_WARN_ON_USE (usleep, "usleep is unportable - "
1498 "use gnulib module usleep for portability");
1499# endif
414e4441
LC		 1500#endif
1501
1502
f4c79b3c 1503#if @GNULIB_WRITE@
9b36a80c 1504/* Write up to COUNT bytes starting at BUF to file descriptor FD.
35428fb6
LC		 1505 See the POSIX:2008 specification
1506 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/write.html>. */
1507# if @REPLACE_WRITE@
f4c79b3c
LC		 1508# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1509# undef write
1510# define write rpl_write
1511# endif
1512_GL_FUNCDECL_RPL (write, ssize_t, (int fd, const void *buf, size_t count)
1513 _GL_ARG_NONNULL ((2)));
1514_GL_CXXALIAS_RPL (write, ssize_t, (int fd, const void *buf, size_t count));
1515# else
a927b6c1
LC		 1516/* Need to cast, because on mingw, the third parameter is
1517 unsigned int count
1518 and the return type is 'int'. */
1519_GL_CXXALIAS_SYS_CAST (write, ssize_t, (int fd, const void *buf, size_t count));
f4c79b3c
LC		 1520# endif
1521_GL_CXXALIASWARN (write);
9b36a80c
LC		 1522#endif
1523
1524
3d458a81
AW		 1525#endif /* _@GUARD_PREFIX@_UNISTD_H */
1526#endif /* _@GUARD_PREFIX@_UNISTD_H */
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