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- Committer: Bazaar Package Importer
- Author(s): Samuel Thibault
- Date: 2010-01-12 23:48:47 UTC
- mto: (1.1.4 upstream) (5.2.1 experimental)
- mto: This revision was merged to the branch mainline in revision 8.
- Revision ID: james.westby@ubuntu.com-20100112234847-ph9xdk3lrjdox6ks
Import upstream version 1.8.0
- files added:
- COPYING.LIB
- build-aux
- gnulib
- gnulib/m4
- m4
- man
- tests/table_test_corpuses
- files removed:
- config.guess
- files modified:
- COPYING
added
removed
gnulib/unistd.in.h
1
/* Substitute for and wrapper around <unistd.h>.
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Copyright (C) 2003-2009 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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14
You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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#ifndef _GL_UNISTD_H
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20
#if __GNUC__ >= 3
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@PRAGMA_SYSTEM_HEADER@
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#endif
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24
/* The include_next requires a split double-inclusion guard. */
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#if @HAVE_UNISTD_H@
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# @INCLUDE_NEXT@ @NEXT_UNISTD_H@
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#endif
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29
#ifndef _GL_UNISTD_H
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#define _GL_UNISTD_H
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/* NetBSD 5.0 mis-defines NULL. Also get size_t. */
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#include <stddef.h>
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/* mingw doesn't define the SEEK_* or *_FILENO macros in <unistd.h>. */
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#if !(defined SEEK_CUR && defined SEEK_END && defined SEEK_SET)
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# include <stdio.h>
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#endif
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/* mingw fails to declare _exit in <unistd.h>. */
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/* mingw, BeOS, Haiku declare environ in <stdlib.h>, not in <unistd.h>. */
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#include <stdlib.h>
43
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#if ((@GNULIB_WRITE@ && @REPLACE_WRITE@ && @GNULIB_UNISTD_H_SIGPIPE@) \
45
|| (@GNULIB_READLINK@ && (!@HAVE_READLINK@ || @REPLACE_READLINK@)) \
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|| (@GNULIB_READLINKAT@ && !@HAVE_READLINKAT@))
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/* Get ssize_t. */
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# include <sys/types.h>
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#endif
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51
/* Get getopt(), optarg, optind, opterr, optopt. */
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#if @GNULIB_UNISTD_H_GETOPT@ && !defined _GL_SYSTEM_GETOPT
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# include <getopt.h>
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#endif
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56
#if @GNULIB_GETHOSTNAME@
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/* Get all possible declarations of gethostname(). */
58
# if @UNISTD_H_HAVE_WINSOCK2_H@
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# include <winsock2.h>
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# if !defined _GL_SYS_SOCKET_H
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# undef socket
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# define socket socket_used_without_including_sys_socket_h
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# undef connect
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# define connect connect_used_without_including_sys_socket_h
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# undef accept
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# define accept accept_used_without_including_sys_socket_h
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# undef bind
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# define bind bind_used_without_including_sys_socket_h
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# undef getpeername
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# define getpeername getpeername_used_without_including_sys_socket_h
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# undef getsockname
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# define getsockname getsockname_used_without_including_sys_socket_h
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# undef getsockopt
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# define getsockopt getsockopt_used_without_including_sys_socket_h
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# undef listen
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# define listen listen_used_without_including_sys_socket_h
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# undef recv
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# define recv recv_used_without_including_sys_socket_h
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# undef send
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# define send send_used_without_including_sys_socket_h
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# undef recvfrom
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# define recvfrom recvfrom_used_without_including_sys_socket_h
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# undef sendto
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# define sendto sendto_used_without_including_sys_socket_h
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# undef setsockopt
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# define setsockopt setsockopt_used_without_including_sys_socket_h
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# undef shutdown
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# define shutdown shutdown_used_without_including_sys_socket_h
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# endif
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# if !defined _GL_SYS_SELECT_H
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# undef select
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# define select select_used_without_including_sys_select_h
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# endif
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# endif
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#endif
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/* The definition of GL_LINK_WARNING is copied here. */
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/* OS/2 EMX lacks these macros. */
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#ifndef STDIN_FILENO
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# define STDIN_FILENO 0
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#endif
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#ifndef STDOUT_FILENO
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# define STDOUT_FILENO 1
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#endif
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#ifndef STDERR_FILENO
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# define STDERR_FILENO 2
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#endif
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/* Ensure *_OK macros exist. */
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#ifndef F_OK
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# define F_OK 0
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# define X_OK 1
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# define W_OK 2
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# define R_OK 4
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#endif
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119
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/* Declare overridden functions. */
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if @GNULIB_CHOWN@
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# if @REPLACE_CHOWN@
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# ifndef REPLACE_CHOWN
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# define REPLACE_CHOWN 1
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# endif
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# if REPLACE_CHOWN
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/* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
134
to GID (if GID is not -1). Follow symbolic links.
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Return 0 if successful, otherwise -1 and errno set.
136
See the POSIX:2001 specification
137
<http://www.opengroup.org/susv3xsh/chown.html>. */
138
# define chown rpl_chown
139
extern int chown (const char *file, uid_t uid, gid_t gid);
140
# endif
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# endif
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#elif defined GNULIB_POSIXCHECK
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# undef chown
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# define chown(f,u,g) \
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(GL_LINK_WARNING ("chown fails to follow symlinks on some systems and " \
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"doesn't treat a uid or gid of -1 on some systems - " \
147
"use gnulib module chown for portability"), \
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chown (f, u, g))
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#endif
150
151
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#if @GNULIB_CLOSE@
153
# if @REPLACE_CLOSE@
154
/* Automatically included by modules that need a replacement for close. */
155
# undef close
156
# define close rpl_close
157
extern int close (int);
158
# endif
159
#elif @UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@
160
# undef close
161
# define close close_used_without_requesting_gnulib_module_close
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#elif defined GNULIB_POSIXCHECK
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# undef close
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# define close(f) \
165
(GL_LINK_WARNING ("close does not portably work on sockets - " \
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"use gnulib module close for portability"), \
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close (f))
168
#endif
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#if @REPLACE_DUP@
172
# define dup rpl_dup
173
extern int dup (int);
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#endif
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#if @GNULIB_DUP2@
178
# if @REPLACE_DUP2@
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# define dup2 rpl_dup2
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# endif
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# if !@HAVE_DUP2@ || @REPLACE_DUP2@
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/* Copy the file descriptor OLDFD into file descriptor NEWFD. Do nothing if
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NEWFD = OLDFD, otherwise close NEWFD first if it is open.
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Return newfd if successful, otherwise -1 and errno set.
185
See the POSIX:2001 specification
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<http://www.opengroup.org/susv3xsh/dup2.html>. */
187
extern int dup2 (int oldfd, int newfd);
188
# endif
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#elif defined GNULIB_POSIXCHECK
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# undef dup2
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# define dup2(o,n) \
192
(GL_LINK_WARNING ("dup2 is unportable - " \
193
"use gnulib module dup2 for portability"), \
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dup2 (o, n))
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#endif
196
197
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#if @GNULIB_DUP3@
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/* Copy the file descriptor OLDFD into file descriptor NEWFD, with the
200
specified flags.
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The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
202
and O_TEXT, O_BINARY (defined in "binary-io.h").
203
Close NEWFD first if it is open.
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Return newfd if successful, otherwise -1 and errno set.
205
See the Linux man page at
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<http://www.kernel.org/doc/man-pages/online/pages/man2/dup3.2.html>. */
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# if @HAVE_DUP3@
208
# define dup3 rpl_dup3
209
# endif
210
extern int dup3 (int oldfd, int newfd, int flags);
211
#elif defined GNULIB_POSIXCHECK
212
# undef dup3
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# define dup3(o,n,f) \
214
(GL_LINK_WARNING ("dup3 is unportable - " \
215
"use gnulib module dup3 for portability"), \
216
dup3 (o, n, f))
217
#endif
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219
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#if @GNULIB_ENVIRON@
221
# if !@HAVE_DECL_ENVIRON@
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/* Set of environment variables and values. An array of strings of the form
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"VARIABLE=VALUE", terminated with a NULL. */
224
# if defined __APPLE__ && defined __MACH__
225
# include <crt_externs.h>
226
# define environ (*_NSGetEnviron ())
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# else
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extern char **environ;
229
# endif
230
# endif
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#elif defined GNULIB_POSIXCHECK
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# undef environ
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# define environ \
234
(GL_LINK_WARNING ("environ is unportable - " \
235
"use gnulib module environ for portability"), \
236
environ)
237
#endif
238
239
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#if @GNULIB_EUIDACCESS@
241
# if !@HAVE_EUIDACCESS@
242
/* Like access(), except that it uses the effective user id and group id of
243
the current process. */
244
extern int euidaccess (const char *filename, int mode);
245
# endif
246
#elif defined GNULIB_POSIXCHECK
247
# undef euidaccess
248
# define euidaccess(f,m) \
249
(GL_LINK_WARNING ("euidaccess is unportable - " \
250
"use gnulib module euidaccess for portability"), \
251
euidaccess (f, m))
252
#endif
253
254
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#if @GNULIB_FACCESSAT@
256
# if !@HAVE_FACCESSAT@
257
int faccessat (int fd, char const *file, int mode, int flag);
258
# endif
259
#elif defined GNULIB_POSIXCHECK
260
# undef faccessat
261
# define faccessat(d,n,m,f) \
262
(GL_LINK_WARNING ("faccessat is not portable - " \
263
"use gnulib module faccessat for portability"), \
264
faccessat (d, n, m, f))
265
#endif
266
267
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#if @GNULIB_FCHDIR@
269
# if @REPLACE_FCHDIR@
270
/* Change the process' current working directory to the directory on which
271
the given file descriptor is open.
272
Return 0 if successful, otherwise -1 and errno set.
273
See the POSIX:2001 specification
274
<http://www.opengroup.org/susv3xsh/fchdir.html>. */
275
extern int fchdir (int /*fd*/);
276
277
/* Gnulib internal hooks needed to maintain the fchdir metadata. */
278
extern int _gl_register_fd (int fd, const char *filename);
279
extern void _gl_unregister_fd (int fd);
280
extern int _gl_register_dup (int oldfd, int newfd);
281
extern const char *_gl_directory_name (int fd);
282
283
# endif
284
#elif defined GNULIB_POSIXCHECK
285
# undef fchdir
286
# define fchdir(f) \
287
(GL_LINK_WARNING ("fchdir is unportable - " \
288
"use gnulib module fchdir for portability"), \
289
fchdir (f))
290
#endif
291
292
293
#if @GNULIB_FCHOWNAT@
294
# if @REPLACE_FCHOWNAT@
295
# undef fchownat
296
# define fchownat rpl_fchownat
297
# endif
298
# if !@HAVE_FCHOWNAT@ || @REPLACE_FCHOWNAT@
299
extern int fchownat (int fd, char const *file, uid_t owner, gid_t group, int flag);
300
# endif
301
#elif defined GNULIB_POSIXCHECK
302
# undef fchownat
303
# define fchownat(d,n,o,g,f) \
304
(GL_LINK_WARNING ("fchownat is not portable - " \
305
"use gnulib module openat for portability"), \
306
fchownat (d, n, o, g, f))
307
#endif
308
309
310
#if @GNULIB_FSYNC@
311
/* Synchronize changes to a file.
312
Return 0 if successful, otherwise -1 and errno set.
313
See POSIX:2001 specification
314
<http://www.opengroup.org/susv3xsh/fsync.html>. */
315
# if !@HAVE_FSYNC@
316
extern int fsync (int fd);
317
# endif
318
#elif defined GNULIB_POSIXCHECK
319
# undef fsync
320
# define fsync(fd) \
321
(GL_LINK_WARNING ("fsync is unportable - " \
322
"use gnulib module fsync for portability"), \
323
fsync (fd))
324
#endif
325
326
327
#if @GNULIB_FTRUNCATE@
328
# if !@HAVE_FTRUNCATE@
329
/* Change the size of the file to which FD is opened to become equal to LENGTH.
330
Return 0 if successful, otherwise -1 and errno set.
331
See the POSIX:2001 specification
332
<http://www.opengroup.org/susv3xsh/ftruncate.html>. */
333
extern int ftruncate (int fd, off_t length);
334
# endif
335
#elif defined GNULIB_POSIXCHECK
336
# undef ftruncate
337
# define ftruncate(f,l) \
338
(GL_LINK_WARNING ("ftruncate is unportable - " \
339
"use gnulib module ftruncate for portability"), \
340
ftruncate (f, l))
341
#endif
342
343
344
#if @GNULIB_GETCWD@
345
/* Include the headers that might declare getcwd so that they will not
346
cause confusion if included after this file. */
347
# include <stdlib.h>
348
# if @REPLACE_GETCWD@
349
/* Get the name of the current working directory, and put it in SIZE bytes
350
of BUF.
351
Return BUF if successful, or NULL if the directory couldn't be determined
352
or SIZE was too small.
353
See the POSIX:2001 specification
354
<http://www.opengroup.org/susv3xsh/getcwd.html>.
355
Additionally, the gnulib module 'getcwd' guarantees the following GNU
356
extension: If BUF is NULL, an array is allocated with 'malloc'; the array
357
is SIZE bytes long, unless SIZE == 0, in which case it is as big as
358
necessary. */
359
# define getcwd rpl_getcwd
360
extern char * getcwd (char *buf, size_t size);
361
# endif
362
#elif defined GNULIB_POSIXCHECK
363
# undef getcwd
364
# define getcwd(b,s) \
365
(GL_LINK_WARNING ("getcwd is unportable - " \
366
"use gnulib module getcwd for portability"), \
367
getcwd (b, s))
368
#endif
369
370
371
#if @GNULIB_GETDOMAINNAME@
372
/* Return the NIS domain name of the machine.
373
WARNING! The NIS domain name is unrelated to the fully qualified host name
374
of the machine. It is also unrelated to email addresses.
375
WARNING! The NIS domain name is usually the empty string or "(none)" when
376
not using NIS.
377
378
Put up to LEN bytes of the NIS domain name into NAME.
379
Null terminate it if the name is shorter than LEN.
380
If the NIS domain name is longer than LEN, set errno = EINVAL and return -1.
381
Return 0 if successful, otherwise set errno and return -1. */
382
# if !@HAVE_GETDOMAINNAME@
383
extern int getdomainname(char *name, size_t len);
384
# endif
385
#elif defined GNULIB_POSIXCHECK
386
# undef getdomainname
387
# define getdomainname(n,l) \
388
(GL_LINK_WARNING ("getdomainname is unportable - " \
389
"use gnulib module getdomainname for portability"), \
390
getdomainname (n, l))
391
#endif
392
393
394
#if @GNULIB_GETDTABLESIZE@
395
# if !@HAVE_GETDTABLESIZE@
396
/* Return the maximum number of file descriptors in the current process.
397
In POSIX, this is same as sysconf (_SC_OPEN_MAX). */
398
extern int getdtablesize (void);
399
# endif
400
#elif defined GNULIB_POSIXCHECK
401
# undef getdtablesize
402
# define getdtablesize() \
403
(GL_LINK_WARNING ("getdtablesize is unportable - " \
404
"use gnulib module getdtablesize for portability"), \
405
getdtablesize ())
406
#endif
407
408
409
#if @GNULIB_GETHOSTNAME@
410
/* Return the standard host name of the machine.
411
WARNING! The host name may or may not be fully qualified.
412
413
Put up to LEN bytes of the host name into NAME.
414
Null terminate it if the name is shorter than LEN.
415
If the host name is longer than LEN, set errno = EINVAL and return -1.
416
Return 0 if successful, otherwise set errno and return -1. */
417
# if @UNISTD_H_HAVE_WINSOCK2_H@
418
# undef gethostname
419
# define gethostname rpl_gethostname
420
# endif
421
# if @UNISTD_H_HAVE_WINSOCK2_H@ || !@HAVE_GETHOSTNAME@
422
extern int gethostname(char *name, size_t len);
423
# endif
424
#elif @UNISTD_H_HAVE_WINSOCK2_H@
425
# undef gethostname
426
# define gethostname gethostname_used_without_requesting_gnulib_module_gethostname
427
#elif defined GNULIB_POSIXCHECK
428
# undef gethostname
429
# define gethostname(n,l) \
430
(GL_LINK_WARNING ("gethostname is unportable - " \
431
"use gnulib module gethostname for portability"), \
432
gethostname (n, l))
433
#endif
434
435
436
#if @GNULIB_GETLOGIN_R@
437
/* Copies the user's login name to NAME.
438
The array pointed to by NAME has room for SIZE bytes.
439
440
Returns 0 if successful. Upon error, an error number is returned, or -1 in
441
the case that the login name cannot be found but no specific error is
442
provided (this case is hopefully rare but is left open by the POSIX spec).
443
444
See <http://www.opengroup.org/susv3xsh/getlogin.html>.
445
*/
446
# if !@HAVE_DECL_GETLOGIN_R@
447
extern int getlogin_r (char *name, size_t size);
448
# endif
449
#elif defined GNULIB_POSIXCHECK
450
# undef getlogin_r
451
# define getlogin_r(n,s) \
452
(GL_LINK_WARNING ("getlogin_r is unportable - " \
453
"use gnulib module getlogin_r for portability"), \
454
getlogin_r (n, s))
455
#endif
456
457
458
#if @GNULIB_GETPAGESIZE@
459
# if @REPLACE_GETPAGESIZE@
460
# define getpagesize rpl_getpagesize
461
extern int getpagesize (void);
462
# elif !@HAVE_GETPAGESIZE@
463
/* This is for POSIX systems. */
464
# if !defined getpagesize && defined _SC_PAGESIZE
465
# if ! (defined __VMS && __VMS_VER < 70000000)
466
# define getpagesize() sysconf (_SC_PAGESIZE)
467
# endif
468
# endif
469
/* This is for older VMS. */
470
# if !defined getpagesize && defined __VMS
471
# ifdef __ALPHA
472
# define getpagesize() 8192
473
# else
474
# define getpagesize() 512
475
# endif
476
# endif
477
/* This is for BeOS. */
478
# if !defined getpagesize && @HAVE_OS_H@
479
# include <OS.h>
480
# if defined B_PAGE_SIZE
481
# define getpagesize() B_PAGE_SIZE
482
# endif
483
# endif
484
/* This is for AmigaOS4.0. */
485
# if !defined getpagesize && defined __amigaos4__
486
# define getpagesize() 2048
487
# endif
488
/* This is for older Unix systems. */
489
# if !defined getpagesize && @HAVE_SYS_PARAM_H@
490
# include <sys/param.h>
491
# ifdef EXEC_PAGESIZE
492
# define getpagesize() EXEC_PAGESIZE
493
# else
494
# ifdef NBPG
495
# ifndef CLSIZE
496
# define CLSIZE 1
497
# endif
498
# define getpagesize() (NBPG * CLSIZE)
499
# else
500
# ifdef NBPC
501
# define getpagesize() NBPC
502
# endif
503
# endif
504
# endif
505
# endif
506
# endif
507
#elif defined GNULIB_POSIXCHECK
508
# undef getpagesize
509
# define getpagesize() \
510
(GL_LINK_WARNING ("getpagesize is unportable - " \
511
"use gnulib module getpagesize for portability"), \
512
getpagesize ())
513
#endif
514
515
516
#if @GNULIB_GETUSERSHELL@
517
# if !@HAVE_GETUSERSHELL@
518
/* Return the next valid login shell on the system, or NULL when the end of
519
the list has been reached. */
520
extern char *getusershell (void);
521
/* Rewind to pointer that is advanced at each getusershell() call. */
522
extern void setusershell (void);
523
/* Free the pointer that is advanced at each getusershell() call and
524
associated resources. */
525
extern void endusershell (void);
526
# endif
527
#elif defined GNULIB_POSIXCHECK
528
# undef getusershell
529
# define getusershell() \
530
(GL_LINK_WARNING ("getusershell is unportable - " \
531
"use gnulib module getusershell for portability"), \
532
getusershell ())
533
# undef setusershell
534
# define setusershell() \
535
(GL_LINK_WARNING ("setusershell is unportable - " \
536
"use gnulib module getusershell for portability"), \
537
setusershell ())
538
# undef endusershell
539
# define endusershell() \
540
(GL_LINK_WARNING ("endusershell is unportable - " \
541
"use gnulib module getusershell for portability"), \
542
endusershell ())
543
#endif
544
545
546
#if @GNULIB_LCHOWN@
547
# if @REPLACE_LCHOWN@
548
/* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
549
to GID (if GID is not -1). Do not follow symbolic links.
550
Return 0 if successful, otherwise -1 and errno set.
551
See the POSIX:2001 specification
552
<http://www.opengroup.org/susv3xsh/lchown.html>. */
553
# define lchown rpl_lchown
554
extern int lchown (char const *file, uid_t owner, gid_t group);
555
# endif
556
#elif defined GNULIB_POSIXCHECK
557
# undef lchown
558
# define lchown(f,u,g) \
559
(GL_LINK_WARNING ("lchown is unportable to pre-POSIX.1-2001 " \
560
"systems - use gnulib module lchown for portability"), \
561
lchown (f, u, g))
562
#endif
563
564
565
#if @GNULIB_LINK@
566
# if @REPLACE_LINK@
567
# define link rpl_link
568
# endif
569
/* Create a new hard link for an existing file.
570
Return 0 if successful, otherwise -1 and errno set.
571
See POSIX:2001 specification
572
<http://www.opengroup.org/susv3xsh/link.html>. */
573
# if !@HAVE_LINK@ || @REPLACE_LINK@
574
extern int link (const char *path1, const char *path2);
575
# endif
576
#elif defined GNULIB_POSIXCHECK
577
# undef link
578
# define link(path1,path2) \
579
(GL_LINK_WARNING ("link is unportable - " \
580
"use gnulib module link for portability"), \
581
link (path1, path2))
582
#endif
583
584
#if @GNULIB_LINKAT@
585
# if @REPLACE_LINKAT@
586
# undef linkat
587
# define linkat rpl_linkat
588
# endif
589
/* Create a new hard link for an existing file, relative to two
590
directories. FLAG controls whether symlinks are followed.
591
Return 0 if successful, otherwise -1 and errno set. */
592
# if !@HAVE_LINKAT@ || @REPLACE_LINKAT@
593
extern int linkat (int fd1, const char *path1, int fd2, const char *path2,
594
int flag);
595
# endif
596
#elif defined GNULIB_POSIXCHECK
597
# undef linkat
598
# define link(f1,path1,f2,path2,f) \
599
(GL_LINK_WARNING ("linkat is unportable - " \
600
"use gnulib module linkat for portability"), \
601
linkat (f1, path1, f2, path2,f))
602
#endif
603
604
#if @GNULIB_LSEEK@
605
# if @REPLACE_LSEEK@
606
/* Set the offset of FD relative to SEEK_SET, SEEK_CUR, or SEEK_END.
607
Return the new offset if successful, otherwise -1 and errno set.
608
See the POSIX:2001 specification
609
<http://www.opengroup.org/susv3xsh/lseek.html>. */
610
# define lseek rpl_lseek
611
extern off_t lseek (int fd, off_t offset, int whence);
612
# endif
613
#elif defined GNULIB_POSIXCHECK
614
# undef lseek
615
# define lseek(f,o,w) \
616
(GL_LINK_WARNING ("lseek does not fail with ESPIPE on pipes on some " \
617
"systems - use gnulib module lseek for portability"), \
618
lseek (f, o, w))
619
#endif
620
621
622
#if @GNULIB_PIPE2@
623
/* Create a pipe, applying the given flags when opening the read-end of the
624
pipe and the write-end of the pipe.
625
The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
626
and O_TEXT, O_BINARY (defined in "binary-io.h").
627
Store the read-end as fd[0] and the write-end as fd[1].
628
Return 0 upon success, or -1 with errno set upon failure.
629
See also the Linux man page at
630
<http://www.kernel.org/doc/man-pages/online/pages/man2/pipe2.2.html>. */
631
# if @HAVE_PIPE2@
632
# define pipe2 rpl_pipe2
633
# endif
634
extern int pipe2 (int fd[2], int flags);
635
#elif defined GNULIB_POSIXCHECK
636
# undef pipe2
637
# define pipe2(f,o) \
638
(GL_LINK_WARNING ("pipe2 is unportable - " \
639
"use gnulib module pipe2 for portability"), \
640
pipe2 (f, o))
641
#endif
642
643
644
#if @GNULIB_READLINK@
645
# if @REPLACE_READLINK@
646
# define readlink rpl_readlink
647
# endif
648
/* Read the contents of the symbolic link FILE and place the first BUFSIZE
649
bytes of it into BUF. Return the number of bytes placed into BUF if
650
successful, otherwise -1 and errno set.
651
See the POSIX:2001 specification
652
<http://www.opengroup.org/susv3xsh/readlink.html>. */
653
# if !@HAVE_READLINK@ || @REPLACE_READLINK@
654
extern ssize_t readlink (const char *file, char *buf, size_t bufsize);
655
# endif
656
#elif defined GNULIB_POSIXCHECK
657
# undef readlink
658
# define readlink(f,b,s) \
659
(GL_LINK_WARNING ("readlink is unportable - " \
660
"use gnulib module readlink for portability"), \
661
readlink (f, b, s))
662
#endif
663
664
665
#if @GNULIB_READLINKAT@
666
# if !@HAVE_READLINKAT@
667
ssize_t readlinkat (int fd, char const *file, char *buf, size_t len);
668
# endif
669
#elif defined GNULIB_POSIXCHECK
670
# undef readlinkat
671
# define readlinkat(d,n,b,l) \
672
(GL_LINK_WARNING ("readlinkat is not portable - " \
673
"use gnulib module symlinkat for portability"), \
674
readlinkat (d, n, b, l))
675
#endif
676
677
678
#if @GNULIB_RMDIR@
679
# if @REPLACE_RMDIR@
680
# define rmdir rpl_rmdir
681
/* Remove the directory DIR. */
682
extern int rmdir (char const *name);
683
# endif
684
#elif defined GNULIB_POSIXCHECK
685
# undef rmdir
686
# define rmdir(n) \
687
(GL_LINK_WARNING ("rmdir is unportable - " \
688
"use gnulib module rmdir for portability"), \
689
rmdir (n))
690
#endif
691
692
693
#if @GNULIB_SLEEP@
694
/* Pause the execution of the current thread for N seconds.
695
Returns the number of seconds left to sleep.
696
See the POSIX:2001 specification
697
<http://www.opengroup.org/susv3xsh/sleep.html>. */
698
# if !@HAVE_SLEEP@
699
extern unsigned int sleep (unsigned int n);
700
# endif
701
#elif defined GNULIB_POSIXCHECK
702
# undef sleep
703
# define sleep(n) \
704
(GL_LINK_WARNING ("sleep is unportable - " \
705
"use gnulib module sleep for portability"), \
706
sleep (n))
707
#endif
708
709
710
#if @GNULIB_SYMLINK@
711
# if @REPLACE_SYMLINK@
712
# undef symlink
713
# define symlink rpl_symlink
714
# endif
715
# if !@HAVE_SYMLINK@ || @REPLACE_SYMLINK@
716
int symlink (char const *contents, char const *file);
717
# endif
718
#elif defined GNULIB_POSIXCHECK
719
# undef symlink
720
# define symlink(c,n) \
721
(GL_LINK_WARNING ("symlink is not portable - " \
722
"use gnulib module symlink for portability"), \
723
symlink (c, n))
724
#endif
725
726
727
#if @GNULIB_SYMLINKAT@
728
# if !@HAVE_SYMLINKAT@
729
int symlinkat (char const *contents, int fd, char const *file);
730
# endif
731
#elif defined GNULIB_POSIXCHECK
732
# undef symlinkat
733
# define symlinkat(c,d,n) \
734
(GL_LINK_WARNING ("symlinkat is not portable - " \
735
"use gnulib module symlinkat for portability"), \
736
symlinkat (c, d, n))
737
#endif
738
739
740
#if @GNULIB_UNLINK@
741
# if @REPLACE_UNLINK@
742
# undef unlink
743
# define unlink rpl_unlink
744
extern int unlink (char const *file);
745
# endif
746
#elif defined GNULIB_POSIXCHECK
747
# undef unlink
748
# define unlink(n) \
749
(GL_LINK_WARNING ("unlink is not portable - " \
750
"use gnulib module unlink for portability"), \
751
unlink (n))
752
#endif
753
754
755
#if @GNULIB_UNLINKAT@
756
# if @REPLACE_UNLINKAT@
757
# undef unlinkat
758
# define unlinkat rpl_unlinkat
759
# endif
760
# if !@HAVE_UNLINKAT@ || @REPLACE_UNLINKAT@
761
extern int unlinkat (int fd, char const *file, int flag);
762
# endif
763
#elif defined GNULIB_POSIXCHECK
764
# undef unlinkat
765
# define unlinkat(d,n,f) \
766
(GL_LINK_WARNING ("unlinkat is not portable - " \
767
"use gnulib module openat for portability"), \
768
unlinkat (d, n, f))
769
#endif
770
771
772
#if @GNULIB_WRITE@ && @REPLACE_WRITE@ && @GNULIB_UNISTD_H_SIGPIPE@
773
/* Write up to COUNT bytes starting at BUF to file descriptor FD.
774
See the POSIX:2001 specification
775
<http://www.opengroup.org/susv3xsh/write.html>. */
776
# undef write
777
# define write rpl_write
778
extern ssize_t write (int fd, const void *buf, size_t count);
779
#endif
780
781
782
#ifdef __cplusplus
783
}
784
#endif
785
786
787
#endif /* _GL_UNISTD_H */
788
#endif /* _GL_UNISTD_H */
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