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[grub2.git] / grub-core / gnulib / unistd.in.h
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4d8d554a
CW		 1/* Substitute for and wrapper around <unistd.h>.
2 Copyright (C) 2003-2013 Free Software Foundation, Inc.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3, or (at your option)
7 any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, see <http://www.gnu.org/licenses/>. */
16
17#ifndef _@GUARD_PREFIX@_UNISTD_H
18
19#if __GNUC__ >= 3
20@PRAGMA_SYSTEM_HEADER@
21#endif
22@PRAGMA_COLUMNS@
23
24/* The include_next requires a split double-inclusion guard. */
25#if @HAVE_UNISTD_H@
26# @INCLUDE_NEXT@ @NEXT_UNISTD_H@
27#endif
28
29/* Get all possible declarations of gethostname(). */
30#if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@ \
31 && !defined _GL_INCLUDING_WINSOCK2_H
32# define _GL_INCLUDING_WINSOCK2_H
33# include <winsock2.h>
34# undef _GL_INCLUDING_WINSOCK2_H
35#endif
36
37#if !defined _@GUARD_PREFIX@_UNISTD_H && !defined _GL_INCLUDING_WINSOCK2_H
38#define _@GUARD_PREFIX@_UNISTD_H
39
40/* NetBSD 5.0 mis-defines NULL. Also get size_t. */
41#include <stddef.h>
42
43/* mingw doesn't define the SEEK_* or *_FILENO macros in <unistd.h>. */
44/* Cygwin 1.7.1 declares symlinkat in <stdio.h>, not in <unistd.h>. */
45/* But avoid namespace pollution on glibc systems. */
46#if (!(defined SEEK_CUR && defined SEEK_END && defined SEEK_SET) \
47 || ((@GNULIB_SYMLINKAT@ || defined GNULIB_POSIXCHECK) \
48 && defined __CYGWIN__)) \
49 && ! defined __GLIBC__
50# include <stdio.h>
51#endif
52
53/* Cygwin 1.7.1 declares unlinkat in <fcntl.h>, not in <unistd.h>. */
54/* But avoid namespace pollution on glibc systems. */
55#if (@GNULIB_UNLINKAT@ || defined GNULIB_POSIXCHECK) && defined __CYGWIN__ \
56 && ! defined __GLIBC__
57# include <fcntl.h>
58#endif
59
60/* mingw fails to declare _exit in <unistd.h>. */
61/* mingw, MSVC, BeOS, Haiku declare environ in <stdlib.h>, not in
62 <unistd.h>. */
63/* Solaris declares getcwd not only in <unistd.h> but also in <stdlib.h>. */
64/* OSF Tru64 Unix cannot see gnulib rpl_strtod when system <stdlib.h> is
65 included here. */
66/* But avoid namespace pollution on glibc systems. */
67#if !defined __GLIBC__ && !defined __osf__
68# define __need_system_stdlib_h
69# include <stdlib.h>
70# undef __need_system_stdlib_h
71#endif
72
73/* Native Windows platforms declare chdir, getcwd, rmdir in
74 <io.h> and/or <direct.h>, not in <unistd.h>.
75 They also declare access(), chmod(), close(), dup(), dup2(), isatty(),
76 lseek(), read(), unlink(), write() in <io.h>. */
77#if ((@GNULIB_CHDIR@ || @GNULIB_GETCWD@ || @GNULIB_RMDIR@ \
78 || defined GNULIB_POSIXCHECK) \
79 && ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__))
80# include <io.h> /* mingw32, mingw64 */
81# include <direct.h> /* mingw64, MSVC 9 */
82#elif (@GNULIB_CLOSE@ || @GNULIB_DUP@ || @GNULIB_DUP2@ || @GNULIB_ISATTY@ \
83 || @GNULIB_LSEEK@ || @GNULIB_READ@ || @GNULIB_UNLINK@ || @GNULIB_WRITE@ \
84 || defined GNULIB_POSIXCHECK) \
85 && ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__)
86# include <io.h>
87#endif
88
89/* AIX and OSF/1 5.1 declare getdomainname in <netdb.h>, not in <unistd.h>.
90 NonStop Kernel declares gethostname in <netdb.h>, not in <unistd.h>. */
91/* But avoid namespace pollution on glibc systems. */
92#if ((@GNULIB_GETDOMAINNAME@ && (defined _AIX || defined __osf__)) \
93 || (@GNULIB_GETHOSTNAME@ && defined __TANDEM)) \
94 && !defined __GLIBC__
95# include <netdb.h>
96#endif
97
98/* MSVC defines off_t in <sys/types.h>.
99 May also define off_t to a 64-bit type on native Windows. */
100#if !@HAVE_UNISTD_H@ || @WINDOWS_64_BIT_OFF_T@
101/* Get off_t. */
102# include <sys/types.h>
103#endif
104
105#if (@GNULIB_READ@ || @GNULIB_WRITE@ \
106 || @GNULIB_READLINK@ || @GNULIB_READLINKAT@ \
107 || @GNULIB_PREAD@ || @GNULIB_PWRITE@ || defined GNULIB_POSIXCHECK)
108/* Get ssize_t. */
109# include <sys/types.h>
110#endif
111
112/* Get getopt(), optarg, optind, opterr, optopt.
113 But avoid namespace pollution on glibc systems. */
114#if @GNULIB_UNISTD_H_GETOPT@ && !defined __GLIBC__ && !defined _GL_SYSTEM_GETOPT
115# define __need_getopt
116# include <getopt.h>
117#endif
118
119_GL_INLINE_HEADER_BEGIN
120#ifndef _GL_UNISTD_INLINE
121# define _GL_UNISTD_INLINE _GL_INLINE
122#endif
123
124/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
125
126/* The definition of _GL_ARG_NONNULL is copied here. */
127
128/* The definition of _GL_WARN_ON_USE is copied here. */
129
130
131/* Hide some function declarations from <winsock2.h>. */
132
133#if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@
134# if !defined _@GUARD_PREFIX@_SYS_SOCKET_H
135# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
136# undef socket
137# define socket socket_used_without_including_sys_socket_h
138# undef connect
139# define connect connect_used_without_including_sys_socket_h
140# undef accept
141# define accept accept_used_without_including_sys_socket_h
142# undef bind
143# define bind bind_used_without_including_sys_socket_h
144# undef getpeername
145# define getpeername getpeername_used_without_including_sys_socket_h
146# undef getsockname
147# define getsockname getsockname_used_without_including_sys_socket_h
148# undef getsockopt
149# define getsockopt getsockopt_used_without_including_sys_socket_h
150# undef listen
151# define listen listen_used_without_including_sys_socket_h
152# undef recv
153# define recv recv_used_without_including_sys_socket_h
154# undef send
155# define send send_used_without_including_sys_socket_h
156# undef recvfrom
157# define recvfrom recvfrom_used_without_including_sys_socket_h
158# undef sendto
159# define sendto sendto_used_without_including_sys_socket_h
160# undef setsockopt
161# define setsockopt setsockopt_used_without_including_sys_socket_h
162# undef shutdown
163# define shutdown shutdown_used_without_including_sys_socket_h
164# else
165 _GL_WARN_ON_USE (socket,
166 "socket() used without including <sys/socket.h>");
167 _GL_WARN_ON_USE (connect,
168 "connect() used without including <sys/socket.h>");
169 _GL_WARN_ON_USE (accept,
170 "accept() used without including <sys/socket.h>");
171 _GL_WARN_ON_USE (bind,
172 "bind() used without including <sys/socket.h>");
173 _GL_WARN_ON_USE (getpeername,
174 "getpeername() used without including <sys/socket.h>");
175 _GL_WARN_ON_USE (getsockname,
176 "getsockname() used without including <sys/socket.h>");
177 _GL_WARN_ON_USE (getsockopt,
178 "getsockopt() used without including <sys/socket.h>");
179 _GL_WARN_ON_USE (listen,
180 "listen() used without including <sys/socket.h>");
181 _GL_WARN_ON_USE (recv,
182 "recv() used without including <sys/socket.h>");
183 _GL_WARN_ON_USE (send,
184 "send() used without including <sys/socket.h>");
185 _GL_WARN_ON_USE (recvfrom,
186 "recvfrom() used without including <sys/socket.h>");
187 _GL_WARN_ON_USE (sendto,
188 "sendto() used without including <sys/socket.h>");
189 _GL_WARN_ON_USE (setsockopt,
190 "setsockopt() used without including <sys/socket.h>");
191 _GL_WARN_ON_USE (shutdown,
192 "shutdown() used without including <sys/socket.h>");
193# endif
194# endif
195# if !defined _@GUARD_PREFIX@_SYS_SELECT_H
196# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
197# undef select
198# define select select_used_without_including_sys_select_h
199# else
200 _GL_WARN_ON_USE (select,
201 "select() used without including <sys/select.h>");
202# endif
203# endif
204#endif
205
206
207/* OS/2 EMX lacks these macros. */
208#ifndef STDIN_FILENO
209# define STDIN_FILENO 0
210#endif
211#ifndef STDOUT_FILENO
212# define STDOUT_FILENO 1
213#endif
214#ifndef STDERR_FILENO
215# define STDERR_FILENO 2
216#endif
217
218/* Ensure *_OK macros exist. */
219#ifndef F_OK
220# define F_OK 0
221# define X_OK 1
222# define W_OK 2
223# define R_OK 4
224#endif
225
226
227/* Declare overridden functions. */
228
229
230#if defined GNULIB_POSIXCHECK
231/* The access() function is a security risk. */
232_GL_WARN_ON_USE (access, "the access function is a security risk - "
233 "use the gnulib module faccessat instead");
234#endif
235
236
237#if @GNULIB_CHDIR@
238_GL_CXXALIAS_SYS (chdir, int, (const char *file) _GL_ARG_NONNULL ((1)));
239_GL_CXXALIASWARN (chdir);
240#elif defined GNULIB_POSIXCHECK
241# undef chdir
242# if HAVE_RAW_DECL_CHDIR
243_GL_WARN_ON_USE (chown, "chdir is not always in <unistd.h> - "
244 "use gnulib module chdir for portability");
245# endif
246#endif
247
248
249#if @GNULIB_CHOWN@
250/* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
251 to GID (if GID is not -1). Follow symbolic links.
252 Return 0 if successful, otherwise -1 and errno set.
253 See the POSIX:2008 specification
254 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/chown.html. */
255# if @REPLACE_CHOWN@
256# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
257# undef chown
258# define chown rpl_chown
259# endif
260_GL_FUNCDECL_RPL (chown, int, (const char *file, uid_t uid, gid_t gid)
261 _GL_ARG_NONNULL ((1)));
262_GL_CXXALIAS_RPL (chown, int, (const char *file, uid_t uid, gid_t gid));
263# else
264# if !@HAVE_CHOWN@
265_GL_FUNCDECL_SYS (chown, int, (const char *file, uid_t uid, gid_t gid)
266 _GL_ARG_NONNULL ((1)));
267# endif
268_GL_CXXALIAS_SYS (chown, int, (const char *file, uid_t uid, gid_t gid));
269# endif
270_GL_CXXALIASWARN (chown);
271#elif defined GNULIB_POSIXCHECK
272# undef chown
273# if HAVE_RAW_DECL_CHOWN
274_GL_WARN_ON_USE (chown, "chown fails to follow symlinks on some systems and "
275 "doesn't treat a uid or gid of -1 on some systems - "
276 "use gnulib module chown for portability");
277# endif
278#endif
279
280
281#if @GNULIB_CLOSE@
282# if @REPLACE_CLOSE@
283/* Automatically included by modules that need a replacement for close. */
284# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
285# undef close
286# define close rpl_close
287# endif
288_GL_FUNCDECL_RPL (close, int, (int fd));
289_GL_CXXALIAS_RPL (close, int, (int fd));
290# else
291_GL_CXXALIAS_SYS (close, int, (int fd));
292# endif
293_GL_CXXALIASWARN (close);
294#elif @UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@
295# undef close
296# define close close_used_without_requesting_gnulib_module_close
297#elif defined GNULIB_POSIXCHECK
298# undef close
299/* Assume close is always declared. */
300_GL_WARN_ON_USE (close, "close does not portably work on sockets - "
301 "use gnulib module close for portability");
302#endif
303
304
305#if @GNULIB_DUP@
306# if @REPLACE_DUP@
307# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
308# define dup rpl_dup
309# endif
310_GL_FUNCDECL_RPL (dup, int, (int oldfd));
311_GL_CXXALIAS_RPL (dup, int, (int oldfd));
312# else
313_GL_CXXALIAS_SYS (dup, int, (int oldfd));
314# endif
315_GL_CXXALIASWARN (dup);
316#elif defined GNULIB_POSIXCHECK
317# undef dup
318# if HAVE_RAW_DECL_DUP
319_GL_WARN_ON_USE (dup, "dup is unportable - "
320 "use gnulib module dup for portability");
321# endif
322#endif
323
324
325#if @GNULIB_DUP2@
326/* Copy the file descriptor OLDFD into file descriptor NEWFD. Do nothing if
327 NEWFD = OLDFD, otherwise close NEWFD first if it is open.
328 Return newfd if successful, otherwise -1 and errno set.
329 See the POSIX:2008 specification
330 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/dup2.html>. */
331# if @REPLACE_DUP2@
332# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
333# define dup2 rpl_dup2
334# endif
335_GL_FUNCDECL_RPL (dup2, int, (int oldfd, int newfd));
336_GL_CXXALIAS_RPL (dup2, int, (int oldfd, int newfd));
337# else
338# if !@HAVE_DUP2@
339_GL_FUNCDECL_SYS (dup2, int, (int oldfd, int newfd));
340# endif
341_GL_CXXALIAS_SYS (dup2, int, (int oldfd, int newfd));
342# endif
343_GL_CXXALIASWARN (dup2);
344#elif defined GNULIB_POSIXCHECK
345# undef dup2
346# if HAVE_RAW_DECL_DUP2
347_GL_WARN_ON_USE (dup2, "dup2 is unportable - "
348 "use gnulib module dup2 for portability");
349# endif
350#endif
351
352
353#if @GNULIB_DUP3@
354/* Copy the file descriptor OLDFD into file descriptor NEWFD, with the
355 specified flags.
356 The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
357 and O_TEXT, O_BINARY (defined in "binary-io.h").
358 Close NEWFD first if it is open.
359 Return newfd if successful, otherwise -1 and errno set.
360 See the Linux man page at
361 <http://www.kernel.org/doc/man-pages/online/pages/man2/dup3.2.html>. */
362# if @HAVE_DUP3@
363# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
364# define dup3 rpl_dup3
365# endif
366_GL_FUNCDECL_RPL (dup3, int, (int oldfd, int newfd, int flags));
367_GL_CXXALIAS_RPL (dup3, int, (int oldfd, int newfd, int flags));
368# else
369_GL_FUNCDECL_SYS (dup3, int, (int oldfd, int newfd, int flags));
370_GL_CXXALIAS_SYS (dup3, int, (int oldfd, int newfd, int flags));
371# endif
372_GL_CXXALIASWARN (dup3);
373#elif defined GNULIB_POSIXCHECK
374# undef dup3
375# if HAVE_RAW_DECL_DUP3
376_GL_WARN_ON_USE (dup3, "dup3 is unportable - "
377 "use gnulib module dup3 for portability");
378# endif
379#endif
380
381
382#if @GNULIB_ENVIRON@
383# if !@HAVE_DECL_ENVIRON@
384/* Set of environment variables and values. An array of strings of the form
385 "VARIABLE=VALUE", terminated with a NULL. */
386# if defined __APPLE__ && defined __MACH__
387# include <crt_externs.h>
388# define environ (*_NSGetEnviron ())
389# else
390# ifdef __cplusplus
391extern "C" {
392# endif
393extern char **environ;
394# ifdef __cplusplus
395}
396# endif
397# endif
398# endif
399#elif defined GNULIB_POSIXCHECK
400# if HAVE_RAW_DECL_ENVIRON
401_GL_UNISTD_INLINE char ***
402rpl_environ (void)
403{
404 return &environ;
405}
406_GL_WARN_ON_USE (rpl_environ, "environ is unportable - "
407 "use gnulib module environ for portability");
408# undef environ
409# define environ (*rpl_environ ())
410# endif
411#endif
412
413
414#if @GNULIB_EUIDACCESS@
415/* Like access(), except that it uses the effective user id and group id of
416 the current process. */
417# if !@HAVE_EUIDACCESS@
418_GL_FUNCDECL_SYS (euidaccess, int, (const char *filename, int mode)
419 _GL_ARG_NONNULL ((1)));
420# endif
421_GL_CXXALIAS_SYS (euidaccess, int, (const char *filename, int mode));
422_GL_CXXALIASWARN (euidaccess);
423# if defined GNULIB_POSIXCHECK
424/* Like access(), this function is a security risk. */
425_GL_WARN_ON_USE (euidaccess, "the euidaccess function is a security risk - "
426 "use the gnulib module faccessat instead");
427# endif
428#elif defined GNULIB_POSIXCHECK
429# undef euidaccess
430# if HAVE_RAW_DECL_EUIDACCESS
431_GL_WARN_ON_USE (euidaccess, "euidaccess is unportable - "
432 "use gnulib module euidaccess for portability");
433# endif
434#endif
435
436
437#if @GNULIB_FACCESSAT@
438# if !@HAVE_FACCESSAT@
439_GL_FUNCDECL_SYS (faccessat, int,
440 (int fd, char const *file, int mode, int flag)
441 _GL_ARG_NONNULL ((2)));
442# endif
443_GL_CXXALIAS_SYS (faccessat, int,
444 (int fd, char const *file, int mode, int flag));
445_GL_CXXALIASWARN (faccessat);
446#elif defined GNULIB_POSIXCHECK
447# undef faccessat
448# if HAVE_RAW_DECL_FACCESSAT
449_GL_WARN_ON_USE (faccessat, "faccessat is not portable - "
450 "use gnulib module faccessat for portability");
451# endif
452#endif
453
454
455#if @GNULIB_FCHDIR@
456/* Change the process' current working directory to the directory on which
457 the given file descriptor is open.
458 Return 0 if successful, otherwise -1 and errno set.
459 See the POSIX:2008 specification
460 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/fchdir.html>. */
461# if ! @HAVE_FCHDIR@
462_GL_FUNCDECL_SYS (fchdir, int, (int /*fd*/));
463
464/* Gnulib internal hooks needed to maintain the fchdir metadata. */
465_GL_EXTERN_C int _gl_register_fd (int fd, const char *filename)
466 _GL_ARG_NONNULL ((2));
467_GL_EXTERN_C void _gl_unregister_fd (int fd);
468_GL_EXTERN_C int _gl_register_dup (int oldfd, int newfd);
469_GL_EXTERN_C const char *_gl_directory_name (int fd);
470
471# else
472# if !@HAVE_DECL_FCHDIR@
473_GL_FUNCDECL_SYS (fchdir, int, (int /*fd*/));
474# endif
475# endif
476_GL_CXXALIAS_SYS (fchdir, int, (int /*fd*/));
477_GL_CXXALIASWARN (fchdir);
478#elif defined GNULIB_POSIXCHECK
479# undef fchdir
480# if HAVE_RAW_DECL_FCHDIR
481_GL_WARN_ON_USE (fchdir, "fchdir is unportable - "
482 "use gnulib module fchdir for portability");
483# endif
484#endif
485
486
487#if @GNULIB_FCHOWNAT@
488# if @REPLACE_FCHOWNAT@
489# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
490# undef fchownat
491# define fchownat rpl_fchownat
492# endif
493_GL_FUNCDECL_RPL (fchownat, int, (int fd, char const *file,
494 uid_t owner, gid_t group, int flag)
495 _GL_ARG_NONNULL ((2)));
496_GL_CXXALIAS_RPL (fchownat, int, (int fd, char const *file,
497 uid_t owner, gid_t group, int flag));
498# else
499# if !@HAVE_FCHOWNAT@
500_GL_FUNCDECL_SYS (fchownat, int, (int fd, char const *file,
501 uid_t owner, gid_t group, int flag)
502 _GL_ARG_NONNULL ((2)));
503# endif
504_GL_CXXALIAS_SYS (fchownat, int, (int fd, char const *file,
505 uid_t owner, gid_t group, int flag));
506# endif
507_GL_CXXALIASWARN (fchownat);
508#elif defined GNULIB_POSIXCHECK
509# undef fchownat
510# if HAVE_RAW_DECL_FCHOWNAT
511_GL_WARN_ON_USE (fchownat, "fchownat is not portable - "
512 "use gnulib module openat for portability");
513# endif
514#endif
515
516
517#if @GNULIB_FDATASYNC@
518/* Synchronize changes to a file.
519 Return 0 if successful, otherwise -1 and errno set.
520 See POSIX:2008 specification
521 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/fdatasync.html>. */
522# if !@HAVE_FDATASYNC@ || !@HAVE_DECL_FDATASYNC@
523_GL_FUNCDECL_SYS (fdatasync, int, (int fd));
524# endif
525_GL_CXXALIAS_SYS (fdatasync, int, (int fd));
526_GL_CXXALIASWARN (fdatasync);
527#elif defined GNULIB_POSIXCHECK
528# undef fdatasync
529# if HAVE_RAW_DECL_FDATASYNC
530_GL_WARN_ON_USE (fdatasync, "fdatasync is unportable - "
531 "use gnulib module fdatasync for portability");
532# endif
533#endif
534
535
536#if @GNULIB_FSYNC@
537/* Synchronize changes, including metadata, to a file.
538 Return 0 if successful, otherwise -1 and errno set.
539 See POSIX:2008 specification
540 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/fsync.html>. */
541# if !@HAVE_FSYNC@
542_GL_FUNCDECL_SYS (fsync, int, (int fd));
543# endif
544_GL_CXXALIAS_SYS (fsync, int, (int fd));
545_GL_CXXALIASWARN (fsync);
546#elif defined GNULIB_POSIXCHECK
547# undef fsync
548# if HAVE_RAW_DECL_FSYNC
549_GL_WARN_ON_USE (fsync, "fsync is unportable - "
550 "use gnulib module fsync for portability");
551# endif
552#endif
553
554
555#if @GNULIB_FTRUNCATE@
556/* Change the size of the file to which FD is opened to become equal to LENGTH.
557 Return 0 if successful, otherwise -1 and errno set.
558 See the POSIX:2008 specification
559 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/ftruncate.html>. */
560# if @REPLACE_FTRUNCATE@
561# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
562# undef ftruncate
563# define ftruncate rpl_ftruncate
564# endif
565_GL_FUNCDECL_RPL (ftruncate, int, (int fd, off_t length));
566_GL_CXXALIAS_RPL (ftruncate, int, (int fd, off_t length));
567# else
568# if !@HAVE_FTRUNCATE@
569_GL_FUNCDECL_SYS (ftruncate, int, (int fd, off_t length));
570# endif
571_GL_CXXALIAS_SYS (ftruncate, int, (int fd, off_t length));
572# endif
573_GL_CXXALIASWARN (ftruncate);
574#elif defined GNULIB_POSIXCHECK
575# undef ftruncate
576# if HAVE_RAW_DECL_FTRUNCATE
577_GL_WARN_ON_USE (ftruncate, "ftruncate is unportable - "
578 "use gnulib module ftruncate for portability");
579# endif
580#endif
581
582
583#if @GNULIB_GETCWD@
584/* Get the name of the current working directory, and put it in SIZE bytes
585 of BUF.
586 Return BUF if successful, or NULL if the directory couldn't be determined
587 or SIZE was too small.
588 See the POSIX:2008 specification
589 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/getcwd.html>.
590 Additionally, the gnulib module 'getcwd' guarantees the following GNU
591 extension: If BUF is NULL, an array is allocated with 'malloc'; the array
592 is SIZE bytes long, unless SIZE == 0, in which case it is as big as
593 necessary. */
594# if @REPLACE_GETCWD@
595# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
596# define getcwd rpl_getcwd
597# endif
598_GL_FUNCDECL_RPL (getcwd, char *, (char *buf, size_t size));
599_GL_CXXALIAS_RPL (getcwd, char *, (char *buf, size_t size));
600# else
601/* Need to cast, because on mingw, the second parameter is
602 int size. */
603_GL_CXXALIAS_SYS_CAST (getcwd, char *, (char *buf, size_t size));
604# endif
605_GL_CXXALIASWARN (getcwd);
606#elif defined GNULIB_POSIXCHECK
607# undef getcwd
608# if HAVE_RAW_DECL_GETCWD
609_GL_WARN_ON_USE (getcwd, "getcwd is unportable - "
610 "use gnulib module getcwd for portability");
611# endif
612#endif
613
614
615#if @GNULIB_GETDOMAINNAME@
616/* Return the NIS domain name of the machine.
617 WARNING! The NIS domain name is unrelated to the fully qualified host name
618 of the machine. It is also unrelated to email addresses.
619 WARNING! The NIS domain name is usually the empty string or "(none)" when
620 not using NIS.
621
622 Put up to LEN bytes of the NIS domain name into NAME.
623 Null terminate it if the name is shorter than LEN.
624 If the NIS domain name is longer than LEN, set errno = EINVAL and return -1.
625 Return 0 if successful, otherwise set errno and return -1. */
626# if @REPLACE_GETDOMAINNAME@
627# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
628# undef getdomainname
629# define getdomainname rpl_getdomainname
630# endif
631_GL_FUNCDECL_RPL (getdomainname, int, (char *name, size_t len)
632 _GL_ARG_NONNULL ((1)));
633_GL_CXXALIAS_RPL (getdomainname, int, (char *name, size_t len));
634# else
635# if !@HAVE_DECL_GETDOMAINNAME@
636_GL_FUNCDECL_SYS (getdomainname, int, (char *name, size_t len)
637 _GL_ARG_NONNULL ((1)));
638# endif
639_GL_CXXALIAS_SYS (getdomainname, int, (char *name, size_t len));
640# endif
641_GL_CXXALIASWARN (getdomainname);
642#elif defined GNULIB_POSIXCHECK
643# undef getdomainname
644# if HAVE_RAW_DECL_GETDOMAINNAME
645_GL_WARN_ON_USE (getdomainname, "getdomainname is unportable - "
646 "use gnulib module getdomainname for portability");
647# endif
648#endif
649
650
651#if @GNULIB_GETDTABLESIZE@
652/* Return the maximum number of file descriptors in the current process.
653 In POSIX, this is same as sysconf (_SC_OPEN_MAX). */
654# if !@HAVE_GETDTABLESIZE@
655_GL_FUNCDECL_SYS (getdtablesize, int, (void));
656# endif
657_GL_CXXALIAS_SYS (getdtablesize, int, (void));
658_GL_CXXALIASWARN (getdtablesize);
659#elif defined GNULIB_POSIXCHECK
660# undef getdtablesize
661# if HAVE_RAW_DECL_GETDTABLESIZE
662_GL_WARN_ON_USE (getdtablesize, "getdtablesize is unportable - "
663 "use gnulib module getdtablesize for portability");
664# endif
665#endif
666
667
668#if @GNULIB_GETGROUPS@
669/* Return the supplemental groups that the current process belongs to.
670 It is unspecified whether the effective group id is in the list.
671 If N is 0, return the group count; otherwise, N describes how many
672 entries are available in GROUPS. Return -1 and set errno if N is
673 not 0 and not large enough. Fails with ENOSYS on some systems. */
674# if @REPLACE_GETGROUPS@
675# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
676# undef getgroups
677# define getgroups rpl_getgroups
678# endif
679_GL_FUNCDECL_RPL (getgroups, int, (int n, gid_t *groups));
680_GL_CXXALIAS_RPL (getgroups, int, (int n, gid_t *groups));
681# else
682# if !@HAVE_GETGROUPS@
683_GL_FUNCDECL_SYS (getgroups, int, (int n, gid_t *groups));
684# endif
685_GL_CXXALIAS_SYS (getgroups, int, (int n, gid_t *groups));
686# endif
687_GL_CXXALIASWARN (getgroups);
688#elif defined GNULIB_POSIXCHECK
689# undef getgroups
690# if HAVE_RAW_DECL_GETGROUPS
691_GL_WARN_ON_USE (getgroups, "getgroups is unportable - "
692 "use gnulib module getgroups for portability");
693# endif
694#endif
695
696
697#if @GNULIB_GETHOSTNAME@
698/* Return the standard host name of the machine.
699 WARNING! The host name may or may not be fully qualified.
700
701 Put up to LEN bytes of the host name into NAME.
702 Null terminate it if the name is shorter than LEN.
703 If the host name is longer than LEN, set errno = EINVAL and return -1.
704 Return 0 if successful, otherwise set errno and return -1. */
705# if @UNISTD_H_HAVE_WINSOCK2_H@
706# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
707# undef gethostname
708# define gethostname rpl_gethostname
709# endif
710_GL_FUNCDECL_RPL (gethostname, int, (char *name, size_t len)
711 _GL_ARG_NONNULL ((1)));
712_GL_CXXALIAS_RPL (gethostname, int, (char *name, size_t len));
713# else
714# if !@HAVE_GETHOSTNAME@
715_GL_FUNCDECL_SYS (gethostname, int, (char *name, size_t len)
716 _GL_ARG_NONNULL ((1)));
717# endif
718/* Need to cast, because on Solaris 10 and OSF/1 5.1 systems, the second
719 parameter is
720 int len. */
721_GL_CXXALIAS_SYS_CAST (gethostname, int, (char *name, size_t len));
722# endif
723_GL_CXXALIASWARN (gethostname);
724#elif @UNISTD_H_HAVE_WINSOCK2_H@
725# undef gethostname
726# define gethostname gethostname_used_without_requesting_gnulib_module_gethostname
727#elif defined GNULIB_POSIXCHECK
728# undef gethostname
729# if HAVE_RAW_DECL_GETHOSTNAME
730_GL_WARN_ON_USE (gethostname, "gethostname is unportable - "
731 "use gnulib module gethostname for portability");
732# endif
733#endif
734
735
736#if @GNULIB_GETLOGIN@
737/* Returns the user's login name, or NULL if it cannot be found. Upon error,
738 returns NULL with errno set.
739
740 See <http://www.opengroup.org/susv3xsh/getlogin.html>.
741
742 Most programs don't need to use this function, because the information is
743 available through environment variables:
744 ${LOGNAME-$USER} on Unix platforms,
745 $USERNAME on native Windows platforms.
746 */
747# if !@HAVE_GETLOGIN@
748_GL_FUNCDECL_SYS (getlogin, char *, (void));
749# endif
750_GL_CXXALIAS_SYS (getlogin, char *, (void));
751_GL_CXXALIASWARN (getlogin);
752#elif defined GNULIB_POSIXCHECK
753# undef getlogin
754# if HAVE_RAW_DECL_GETLOGIN
755_GL_WARN_ON_USE (getlogin, "getlogin is unportable - "
756 "use gnulib module getlogin for portability");
757# endif
758#endif
759
760
761#if @GNULIB_GETLOGIN_R@
762/* Copies the user's login name to NAME.
763 The array pointed to by NAME has room for SIZE bytes.
764
765 Returns 0 if successful. Upon error, an error number is returned, or -1 in
766 the case that the login name cannot be found but no specific error is
767 provided (this case is hopefully rare but is left open by the POSIX spec).
768
769 See <http://www.opengroup.org/susv3xsh/getlogin.html>.
770
771 Most programs don't need to use this function, because the information is
772 available through environment variables:
773 ${LOGNAME-$USER} on Unix platforms,
774 $USERNAME on native Windows platforms.
775 */
776# if @REPLACE_GETLOGIN_R@
777# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
778# define getlogin_r rpl_getlogin_r
779# endif
780_GL_FUNCDECL_RPL (getlogin_r, int, (char *name, size_t size)
781 _GL_ARG_NONNULL ((1)));
782_GL_CXXALIAS_RPL (getlogin_r, int, (char *name, size_t size));
783# else
784# if !@HAVE_DECL_GETLOGIN_R@
785_GL_FUNCDECL_SYS (getlogin_r, int, (char *name, size_t size)
786 _GL_ARG_NONNULL ((1)));
787# endif
788/* Need to cast, because on Solaris 10 systems, the second argument is
789 int size. */
790_GL_CXXALIAS_SYS_CAST (getlogin_r, int, (char *name, size_t size));
791# endif
792_GL_CXXALIASWARN (getlogin_r);
793#elif defined GNULIB_POSIXCHECK
794# undef getlogin_r
795# if HAVE_RAW_DECL_GETLOGIN_R
796_GL_WARN_ON_USE (getlogin_r, "getlogin_r is unportable - "
797 "use gnulib module getlogin_r for portability");
798# endif
799#endif
800
801
802#if @GNULIB_GETPAGESIZE@
803# if @REPLACE_GETPAGESIZE@
804# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
805# define getpagesize rpl_getpagesize
806# endif
807_GL_FUNCDECL_RPL (getpagesize, int, (void));
808_GL_CXXALIAS_RPL (getpagesize, int, (void));
809# else
810# if !@HAVE_GETPAGESIZE@
811# if !defined getpagesize
812/* This is for POSIX systems. */
813# if !defined _gl_getpagesize && defined _SC_PAGESIZE
814# if ! (defined __VMS && __VMS_VER < 70000000)
815# define _gl_getpagesize() sysconf (_SC_PAGESIZE)
816# endif
817# endif
818/* This is for older VMS. */
819# if !defined _gl_getpagesize && defined __VMS
820# ifdef __ALPHA
821# define _gl_getpagesize() 8192
822# else
823# define _gl_getpagesize() 512
824# endif
825# endif
826/* This is for BeOS. */
827# if !defined _gl_getpagesize && @HAVE_OS_H@
828# include <OS.h>
829# if defined B_PAGE_SIZE
830# define _gl_getpagesize() B_PAGE_SIZE
831# endif
832# endif
833/* This is for AmigaOS4.0. */
834# if !defined _gl_getpagesize && defined __amigaos4__
835# define _gl_getpagesize() 2048
836# endif
837/* This is for older Unix systems. */
838# if !defined _gl_getpagesize && @HAVE_SYS_PARAM_H@
839# include <sys/param.h>
840# ifdef EXEC_PAGESIZE
841# define _gl_getpagesize() EXEC_PAGESIZE
842# else
843# ifdef NBPG
844# ifndef CLSIZE
845# define CLSIZE 1
846# endif
847# define _gl_getpagesize() (NBPG * CLSIZE)
848# else
849# ifdef NBPC
850# define _gl_getpagesize() NBPC
851# endif
852# endif
853# endif
854# endif
855# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
856# define getpagesize() _gl_getpagesize ()
857# else
858# if !GNULIB_defined_getpagesize_function
859_GL_UNISTD_INLINE int
860getpagesize ()
861{
862 return _gl_getpagesize ();
863}
864# define GNULIB_defined_getpagesize_function 1
865# endif
866# endif
867# endif
868# endif
869/* Need to cast, because on Cygwin 1.5.x systems, the return type is size_t. */
870_GL_CXXALIAS_SYS_CAST (getpagesize, int, (void));
871# endif
872# if @HAVE_DECL_GETPAGESIZE@
873_GL_CXXALIASWARN (getpagesize);
874# endif
875#elif defined GNULIB_POSIXCHECK
876# undef getpagesize
877# if HAVE_RAW_DECL_GETPAGESIZE
878_GL_WARN_ON_USE (getpagesize, "getpagesize is unportable - "
879 "use gnulib module getpagesize for portability");
880# endif
881#endif
882
883
884#if @GNULIB_GETUSERSHELL@
885/* Return the next valid login shell on the system, or NULL when the end of
886 the list has been reached. */
887# if !@HAVE_DECL_GETUSERSHELL@
888_GL_FUNCDECL_SYS (getusershell, char *, (void));
889# endif
890_GL_CXXALIAS_SYS (getusershell, char *, (void));
891_GL_CXXALIASWARN (getusershell);
892#elif defined GNULIB_POSIXCHECK
893# undef getusershell
894# if HAVE_RAW_DECL_GETUSERSHELL
895_GL_WARN_ON_USE (getusershell, "getusershell is unportable - "
896 "use gnulib module getusershell for portability");
897# endif
898#endif
899
900#if @GNULIB_GETUSERSHELL@
901/* Rewind to pointer that is advanced at each getusershell() call. */
902# if !@HAVE_DECL_GETUSERSHELL@
903_GL_FUNCDECL_SYS (setusershell, void, (void));
904# endif
905_GL_CXXALIAS_SYS (setusershell, void, (void));
906_GL_CXXALIASWARN (setusershell);
907#elif defined GNULIB_POSIXCHECK
908# undef setusershell
909# if HAVE_RAW_DECL_SETUSERSHELL
910_GL_WARN_ON_USE (setusershell, "setusershell is unportable - "
911 "use gnulib module getusershell for portability");
912# endif
913#endif
914
915#if @GNULIB_GETUSERSHELL@
916/* Free the pointer that is advanced at each getusershell() call and
917 associated resources. */
918# if !@HAVE_DECL_GETUSERSHELL@
919_GL_FUNCDECL_SYS (endusershell, void, (void));
920# endif
921_GL_CXXALIAS_SYS (endusershell, void, (void));
922_GL_CXXALIASWARN (endusershell);
923#elif defined GNULIB_POSIXCHECK
924# undef endusershell
925# if HAVE_RAW_DECL_ENDUSERSHELL
926_GL_WARN_ON_USE (endusershell, "endusershell is unportable - "
927 "use gnulib module getusershell for portability");
928# endif
929#endif
930
931
932#if @GNULIB_GROUP_MEMBER@
933/* Determine whether group id is in calling user's group list. */
934# if !@HAVE_GROUP_MEMBER@
935_GL_FUNCDECL_SYS (group_member, int, (gid_t gid));
936# endif
937_GL_CXXALIAS_SYS (group_member, int, (gid_t gid));
938_GL_CXXALIASWARN (group_member);
939#elif defined GNULIB_POSIXCHECK
940# undef group_member
941# if HAVE_RAW_DECL_GROUP_MEMBER
942_GL_WARN_ON_USE (group_member, "group_member is unportable - "
943 "use gnulib module group-member for portability");
944# endif
945#endif
946
947
948#if @GNULIB_ISATTY@
949# if @REPLACE_ISATTY@
950# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
951# undef isatty
952# define isatty rpl_isatty
953# endif
954_GL_FUNCDECL_RPL (isatty, int, (int fd));
955_GL_CXXALIAS_RPL (isatty, int, (int fd));
956# else
957_GL_CXXALIAS_SYS (isatty, int, (int fd));
958# endif
959_GL_CXXALIASWARN (isatty);
960#elif defined GNULIB_POSIXCHECK
961# undef isatty
962# if HAVE_RAW_DECL_ISATTY
963_GL_WARN_ON_USE (isatty, "isatty has portability problems on native Windows - "
964 "use gnulib module isatty for portability");
965# endif
966#endif
967
968
969#if @GNULIB_LCHOWN@
970/* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
971 to GID (if GID is not -1). Do not follow symbolic links.
972 Return 0 if successful, otherwise -1 and errno set.
973 See the POSIX:2008 specification
974 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/lchown.html>. */
975# if @REPLACE_LCHOWN@
976# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
977# undef lchown
978# define lchown rpl_lchown
979# endif
980_GL_FUNCDECL_RPL (lchown, int, (char const *file, uid_t owner, gid_t group)
981 _GL_ARG_NONNULL ((1)));
982_GL_CXXALIAS_RPL (lchown, int, (char const *file, uid_t owner, gid_t group));
983# else
984# if !@HAVE_LCHOWN@
985_GL_FUNCDECL_SYS (lchown, int, (char const *file, uid_t owner, gid_t group)
986 _GL_ARG_NONNULL ((1)));
987# endif
988_GL_CXXALIAS_SYS (lchown, int, (char const *file, uid_t owner, gid_t group));
989# endif
990_GL_CXXALIASWARN (lchown);
991#elif defined GNULIB_POSIXCHECK
992# undef lchown
993# if HAVE_RAW_DECL_LCHOWN
994_GL_WARN_ON_USE (lchown, "lchown is unportable to pre-POSIX.1-2001 systems - "
995 "use gnulib module lchown for portability");
996# endif
997#endif
998
999
1000#if @GNULIB_LINK@
1001/* Create a new hard link for an existing file.
1002 Return 0 if successful, otherwise -1 and errno set.
1003 See POSIX:2008 specification
1004 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/link.html>. */
1005# if @REPLACE_LINK@
1006# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1007# define link rpl_link
1008# endif
1009_GL_FUNCDECL_RPL (link, int, (const char *path1, const char *path2)
1010 _GL_ARG_NONNULL ((1, 2)));
1011_GL_CXXALIAS_RPL (link, int, (const char *path1, const char *path2));
1012# else
1013# if !@HAVE_LINK@
1014_GL_FUNCDECL_SYS (link, int, (const char *path1, const char *path2)
1015 _GL_ARG_NONNULL ((1, 2)));
1016# endif
1017_GL_CXXALIAS_SYS (link, int, (const char *path1, const char *path2));
1018# endif
1019_GL_CXXALIASWARN (link);
1020#elif defined GNULIB_POSIXCHECK
1021# undef link
1022# if HAVE_RAW_DECL_LINK
1023_GL_WARN_ON_USE (link, "link is unportable - "
1024 "use gnulib module link for portability");
1025# endif
1026#endif
1027
1028
1029#if @GNULIB_LINKAT@
1030/* Create a new hard link for an existing file, relative to two
1031 directories. FLAG controls whether symlinks are followed.
1032 Return 0 if successful, otherwise -1 and errno set. */
1033# if @REPLACE_LINKAT@
1034# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1035# undef linkat
1036# define linkat rpl_linkat
1037# endif
1038_GL_FUNCDECL_RPL (linkat, int,
1039 (int fd1, const char *path1, int fd2, const char *path2,
1040 int flag)
1041 _GL_ARG_NONNULL ((2, 4)));
1042_GL_CXXALIAS_RPL (linkat, int,
1043 (int fd1, const char *path1, int fd2, const char *path2,
1044 int flag));
1045# else
1046# if !@HAVE_LINKAT@
1047_GL_FUNCDECL_SYS (linkat, int,
1048 (int fd1, const char *path1, int fd2, const char *path2,
1049 int flag)
1050 _GL_ARG_NONNULL ((2, 4)));
1051# endif
1052_GL_CXXALIAS_SYS (linkat, int,
1053 (int fd1, const char *path1, int fd2, const char *path2,
1054 int flag));
1055# endif
1056_GL_CXXALIASWARN (linkat);
1057#elif defined GNULIB_POSIXCHECK
1058# undef linkat
1059# if HAVE_RAW_DECL_LINKAT
1060_GL_WARN_ON_USE (linkat, "linkat is unportable - "
1061 "use gnulib module linkat for portability");
1062# endif
1063#endif
1064
1065
1066#if @GNULIB_LSEEK@
1067/* Set the offset of FD relative to SEEK_SET, SEEK_CUR, or SEEK_END.
1068 Return the new offset if successful, otherwise -1 and errno set.
1069 See the POSIX:2008 specification
1070 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/lseek.html>. */
1071# if @REPLACE_LSEEK@
1072# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1073# define lseek rpl_lseek
1074# endif
1075_GL_FUNCDECL_RPL (lseek, off_t, (int fd, off_t offset, int whence));
1076_GL_CXXALIAS_RPL (lseek, off_t, (int fd, off_t offset, int whence));
1077# else
1078_GL_CXXALIAS_SYS (lseek, off_t, (int fd, off_t offset, int whence));
1079# endif
1080_GL_CXXALIASWARN (lseek);
1081#elif defined GNULIB_POSIXCHECK
1082# undef lseek
1083# if HAVE_RAW_DECL_LSEEK
1084_GL_WARN_ON_USE (lseek, "lseek does not fail with ESPIPE on pipes on some "
1085 "systems - use gnulib module lseek for portability");
1086# endif
1087#endif
1088
1089
1090#if @GNULIB_PIPE@
1091/* Create a pipe, defaulting to O_BINARY mode.
1092 Store the read-end as fd[0] and the write-end as fd[1].
1093 Return 0 upon success, or -1 with errno set upon failure. */
1094# if !@HAVE_PIPE@
1095_GL_FUNCDECL_SYS (pipe, int, (int fd[2]) _GL_ARG_NONNULL ((1)));
1096# endif
1097_GL_CXXALIAS_SYS (pipe, int, (int fd[2]));
1098_GL_CXXALIASWARN (pipe);
1099#elif defined GNULIB_POSIXCHECK
1100# undef pipe
1101# if HAVE_RAW_DECL_PIPE
1102_GL_WARN_ON_USE (pipe, "pipe is unportable - "
1103 "use gnulib module pipe-posix for portability");
1104# endif
1105#endif
1106
1107
1108#if @GNULIB_PIPE2@
1109/* Create a pipe, applying the given flags when opening the read-end of the
1110 pipe and the write-end of the pipe.
1111 The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
1112 and O_TEXT, O_BINARY (defined in "binary-io.h").
1113 Store the read-end as fd[0] and the write-end as fd[1].
1114 Return 0 upon success, or -1 with errno set upon failure.
1115 See also the Linux man page at
1116 <http://www.kernel.org/doc/man-pages/online/pages/man2/pipe2.2.html>. */
1117# if @HAVE_PIPE2@
1118# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1119# define pipe2 rpl_pipe2
1120# endif
1121_GL_FUNCDECL_RPL (pipe2, int, (int fd[2], int flags) _GL_ARG_NONNULL ((1)));
1122_GL_CXXALIAS_RPL (pipe2, int, (int fd[2], int flags));
1123# else
1124_GL_FUNCDECL_SYS (pipe2, int, (int fd[2], int flags) _GL_ARG_NONNULL ((1)));
1125_GL_CXXALIAS_SYS (pipe2, int, (int fd[2], int flags));
1126# endif
1127_GL_CXXALIASWARN (pipe2);
1128#elif defined GNULIB_POSIXCHECK
1129# undef pipe2
1130# if HAVE_RAW_DECL_PIPE2
1131_GL_WARN_ON_USE (pipe2, "pipe2 is unportable - "
1132 "use gnulib module pipe2 for portability");
1133# endif
1134#endif
1135
1136
1137#if @GNULIB_PREAD@
1138/* Read at most BUFSIZE bytes from FD into BUF, starting at OFFSET.
1139 Return the number of bytes placed into BUF if successful, otherwise
1140 set errno and return -1. 0 indicates EOF.
1141 See the POSIX:2008 specification
1142 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/pread.html>. */
1143# if @REPLACE_PREAD@
1144# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1145# undef pread
1146# define pread rpl_pread
1147# endif
1148_GL_FUNCDECL_RPL (pread, ssize_t,
1149 (int fd, void *buf, size_t bufsize, off_t offset)
1150 _GL_ARG_NONNULL ((2)));
1151_GL_CXXALIAS_RPL (pread, ssize_t,
1152 (int fd, void *buf, size_t bufsize, off_t offset));
1153# else
1154# if !@HAVE_PREAD@
1155_GL_FUNCDECL_SYS (pread, ssize_t,
1156 (int fd, void *buf, size_t bufsize, off_t offset)
1157 _GL_ARG_NONNULL ((2)));
1158# endif
1159_GL_CXXALIAS_SYS (pread, ssize_t,
1160 (int fd, void *buf, size_t bufsize, off_t offset));
1161# endif
1162_GL_CXXALIASWARN (pread);
1163#elif defined GNULIB_POSIXCHECK
1164# undef pread
1165# if HAVE_RAW_DECL_PREAD
1166_GL_WARN_ON_USE (pread, "pread is unportable - "
1167 "use gnulib module pread for portability");
1168# endif
1169#endif
1170
1171
1172#if @GNULIB_PWRITE@
1173/* Write at most BUFSIZE bytes from BUF into FD, starting at OFFSET.
1174 Return the number of bytes written if successful, otherwise
1175 set errno and return -1. 0 indicates nothing written. See the
1176 POSIX:2008 specification
1177 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/pwrite.html>. */
1178# if @REPLACE_PWRITE@
1179# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1180# undef pwrite
1181# define pwrite rpl_pwrite
1182# endif
1183_GL_FUNCDECL_RPL (pwrite, ssize_t,
1184 (int fd, const void *buf, size_t bufsize, off_t offset)
1185 _GL_ARG_NONNULL ((2)));
1186_GL_CXXALIAS_RPL (pwrite, ssize_t,
1187 (int fd, const void *buf, size_t bufsize, off_t offset));
1188# else
1189# if !@HAVE_PWRITE@
1190_GL_FUNCDECL_SYS (pwrite, ssize_t,
1191 (int fd, const void *buf, size_t bufsize, off_t offset)
1192 _GL_ARG_NONNULL ((2)));
1193# endif
1194_GL_CXXALIAS_SYS (pwrite, ssize_t,
1195 (int fd, const void *buf, size_t bufsize, off_t offset));
1196# endif
1197_GL_CXXALIASWARN (pwrite);
1198#elif defined GNULIB_POSIXCHECK
1199# undef pwrite
1200# if HAVE_RAW_DECL_PWRITE
1201_GL_WARN_ON_USE (pwrite, "pwrite is unportable - "
1202 "use gnulib module pwrite for portability");
1203# endif
1204#endif
1205
1206
1207#if @GNULIB_READ@
1208/* Read up to COUNT bytes from file descriptor FD into the buffer starting
1209 at BUF. See the POSIX:2008 specification
1210 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/read.html>. */
1211# if @REPLACE_READ@
1212# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1213# undef read
1214# define read rpl_read
1215# endif
1216_GL_FUNCDECL_RPL (read, ssize_t, (int fd, void *buf, size_t count)
1217 _GL_ARG_NONNULL ((2)));
1218_GL_CXXALIAS_RPL (read, ssize_t, (int fd, void *buf, size_t count));
1219# else
1220/* Need to cast, because on mingw, the third parameter is
1221 unsigned int count
1222 and the return type is 'int'. */
1223_GL_CXXALIAS_SYS_CAST (read, ssize_t, (int fd, void *buf, size_t count));
1224# endif
1225_GL_CXXALIASWARN (read);
1226#endif
1227
1228
1229#if @GNULIB_READLINK@
1230/* Read the contents of the symbolic link FILE and place the first BUFSIZE
1231 bytes of it into BUF. Return the number of bytes placed into BUF if
1232 successful, otherwise -1 and errno set.
1233 See the POSIX:2008 specification
1234 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/readlink.html>. */
1235# if @REPLACE_READLINK@
1236# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1237# define readlink rpl_readlink
1238# endif
1239_GL_FUNCDECL_RPL (readlink, ssize_t,
1240 (const char *file, char *buf, size_t bufsize)
1241 _GL_ARG_NONNULL ((1, 2)));
1242_GL_CXXALIAS_RPL (readlink, ssize_t,
1243 (const char *file, char *buf, size_t bufsize));
1244# else
1245# if !@HAVE_READLINK@
1246_GL_FUNCDECL_SYS (readlink, ssize_t,
1247 (const char *file, char *buf, size_t bufsize)
1248 _GL_ARG_NONNULL ((1, 2)));
1249# endif
1250_GL_CXXALIAS_SYS (readlink, ssize_t,
1251 (const char *file, char *buf, size_t bufsize));
1252# endif
1253_GL_CXXALIASWARN (readlink);
1254#elif defined GNULIB_POSIXCHECK
1255# undef readlink
1256# if HAVE_RAW_DECL_READLINK
1257_GL_WARN_ON_USE (readlink, "readlink is unportable - "
1258 "use gnulib module readlink for portability");
1259# endif
1260#endif
1261
1262
1263#if @GNULIB_READLINKAT@
1264# if !@HAVE_READLINKAT@
1265_GL_FUNCDECL_SYS (readlinkat, ssize_t,
1266 (int fd, char const *file, char *buf, size_t len)
1267 _GL_ARG_NONNULL ((2, 3)));
1268# endif
1269_GL_CXXALIAS_SYS (readlinkat, ssize_t,
1270 (int fd, char const *file, char *buf, size_t len));
1271_GL_CXXALIASWARN (readlinkat);
1272#elif defined GNULIB_POSIXCHECK
1273# undef readlinkat
1274# if HAVE_RAW_DECL_READLINKAT
1275_GL_WARN_ON_USE (readlinkat, "readlinkat is not portable - "
1276 "use gnulib module readlinkat for portability");
1277# endif
1278#endif
1279
1280
1281#if @GNULIB_RMDIR@
1282/* Remove the directory DIR. */
1283# if @REPLACE_RMDIR@
1284# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1285# define rmdir rpl_rmdir
1286# endif
1287_GL_FUNCDECL_RPL (rmdir, int, (char const *name) _GL_ARG_NONNULL ((1)));
1288_GL_CXXALIAS_RPL (rmdir, int, (char const *name));
1289# else
1290_GL_CXXALIAS_SYS (rmdir, int, (char const *name));
1291# endif
1292_GL_CXXALIASWARN (rmdir);
1293#elif defined GNULIB_POSIXCHECK
1294# undef rmdir
1295# if HAVE_RAW_DECL_RMDIR
1296_GL_WARN_ON_USE (rmdir, "rmdir is unportable - "
1297 "use gnulib module rmdir for portability");
1298# endif
1299#endif
1300
1301
1302#if @GNULIB_SETHOSTNAME@
1303/* Set the host name of the machine.
1304 The host name may or may not be fully qualified.
1305
1306 Put LEN bytes of NAME into the host name.
1307 Return 0 if successful, otherwise, set errno and return -1.
1308
1309 Platforms with no ability to set the hostname return -1 and set
1310 errno = ENOSYS. */
1311# if !@HAVE_SETHOSTNAME@ || !@HAVE_DECL_SETHOSTNAME@
1312_GL_FUNCDECL_SYS (sethostname, int, (const char *name, size_t len)
1313 _GL_ARG_NONNULL ((1)));
1314# endif
1315/* Need to cast, because on Solaris 11 2011-10, Mac OS X 10.5, IRIX 6.5
1316 and FreeBSD 6.4 the second parameter is int. On Solaris 11
1317 2011-10, the first parameter is not const. */
1318_GL_CXXALIAS_SYS_CAST (sethostname, int, (const char *name, size_t len));
1319_GL_CXXALIASWARN (sethostname);
1320#elif defined GNULIB_POSIXCHECK
1321# undef sethostname
1322# if HAVE_RAW_DECL_SETHOSTNAME
1323_GL_WARN_ON_USE (sethostname, "sethostname is unportable - "
1324 "use gnulib module sethostname for portability");
1325# endif
1326#endif
1327
1328
1329#if @GNULIB_SLEEP@
1330/* Pause the execution of the current thread for N seconds.
1331 Returns the number of seconds left to sleep.
1332 See the POSIX:2008 specification
1333 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/sleep.html>. */
1334# if @REPLACE_SLEEP@
1335# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1336# undef sleep
1337# define sleep rpl_sleep
1338# endif
1339_GL_FUNCDECL_RPL (sleep, unsigned int, (unsigned int n));
1340_GL_CXXALIAS_RPL (sleep, unsigned int, (unsigned int n));
1341# else
1342# if !@HAVE_SLEEP@
1343_GL_FUNCDECL_SYS (sleep, unsigned int, (unsigned int n));
1344# endif
1345_GL_CXXALIAS_SYS (sleep, unsigned int, (unsigned int n));
1346# endif
1347_GL_CXXALIASWARN (sleep);
1348#elif defined GNULIB_POSIXCHECK
1349# undef sleep
1350# if HAVE_RAW_DECL_SLEEP
1351_GL_WARN_ON_USE (sleep, "sleep is unportable - "
1352 "use gnulib module sleep for portability");
1353# endif
1354#endif
1355
1356
1357#if @GNULIB_SYMLINK@
1358# if @REPLACE_SYMLINK@
1359# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1360# undef symlink
1361# define symlink rpl_symlink
1362# endif
1363_GL_FUNCDECL_RPL (symlink, int, (char const *contents, char const *file)
1364 _GL_ARG_NONNULL ((1, 2)));
1365_GL_CXXALIAS_RPL (symlink, int, (char const *contents, char const *file));
1366# else
1367# if !@HAVE_SYMLINK@
1368_GL_FUNCDECL_SYS (symlink, int, (char const *contents, char const *file)
1369 _GL_ARG_NONNULL ((1, 2)));
1370# endif
1371_GL_CXXALIAS_SYS (symlink, int, (char const *contents, char const *file));
1372# endif
1373_GL_CXXALIASWARN (symlink);
1374#elif defined GNULIB_POSIXCHECK
1375# undef symlink
1376# if HAVE_RAW_DECL_SYMLINK
1377_GL_WARN_ON_USE (symlink, "symlink is not portable - "
1378 "use gnulib module symlink for portability");
1379# endif
1380#endif
1381
1382
1383#if @GNULIB_SYMLINKAT@
1384# if !@HAVE_SYMLINKAT@
1385_GL_FUNCDECL_SYS (symlinkat, int,
1386 (char const *contents, int fd, char const *file)
1387 _GL_ARG_NONNULL ((1, 3)));
1388# endif
1389_GL_CXXALIAS_SYS (symlinkat, int,
1390 (char const *contents, int fd, char const *file));
1391_GL_CXXALIASWARN (symlinkat);
1392#elif defined GNULIB_POSIXCHECK
1393# undef symlinkat
1394# if HAVE_RAW_DECL_SYMLINKAT
1395_GL_WARN_ON_USE (symlinkat, "symlinkat is not portable - "
1396 "use gnulib module symlinkat for portability");
1397# endif
1398#endif
1399
1400
1401#if @GNULIB_TTYNAME_R@
1402/* Store at most BUFLEN characters of the pathname of the terminal FD is
1403 open on in BUF. Return 0 on success, otherwise an error number. */
1404# if @REPLACE_TTYNAME_R@
1405# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1406# undef ttyname_r
1407# define ttyname_r rpl_ttyname_r
1408# endif
1409_GL_FUNCDECL_RPL (ttyname_r, int,
1410 (int fd, char *buf, size_t buflen) _GL_ARG_NONNULL ((2)));
1411_GL_CXXALIAS_RPL (ttyname_r, int,
1412 (int fd, char *buf, size_t buflen));
1413# else
1414# if !@HAVE_DECL_TTYNAME_R@
1415_GL_FUNCDECL_SYS (ttyname_r, int,
1416 (int fd, char *buf, size_t buflen) _GL_ARG_NONNULL ((2)));
1417# endif
1418_GL_CXXALIAS_SYS (ttyname_r, int,
1419 (int fd, char *buf, size_t buflen));
1420# endif
1421_GL_CXXALIASWARN (ttyname_r);
1422#elif defined GNULIB_POSIXCHECK
1423# undef ttyname_r
1424# if HAVE_RAW_DECL_TTYNAME_R
1425_GL_WARN_ON_USE (ttyname_r, "ttyname_r is not portable - "
1426 "use gnulib module ttyname_r for portability");
1427# endif
1428#endif
1429
1430
1431#if @GNULIB_UNLINK@
1432# if @REPLACE_UNLINK@
1433# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1434# undef unlink
1435# define unlink rpl_unlink
1436# endif
1437_GL_FUNCDECL_RPL (unlink, int, (char const *file) _GL_ARG_NONNULL ((1)));
1438_GL_CXXALIAS_RPL (unlink, int, (char const *file));
1439# else
1440_GL_CXXALIAS_SYS (unlink, int, (char const *file));
1441# endif
1442_GL_CXXALIASWARN (unlink);
1443#elif defined GNULIB_POSIXCHECK
1444# undef unlink
1445# if HAVE_RAW_DECL_UNLINK
1446_GL_WARN_ON_USE (unlink, "unlink is not portable - "
1447 "use gnulib module unlink for portability");
1448# endif
1449#endif
1450
1451
1452#if @GNULIB_UNLINKAT@
1453# if @REPLACE_UNLINKAT@
1454# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1455# undef unlinkat
1456# define unlinkat rpl_unlinkat
1457# endif
1458_GL_FUNCDECL_RPL (unlinkat, int, (int fd, char const *file, int flag)
1459 _GL_ARG_NONNULL ((2)));
1460_GL_CXXALIAS_RPL (unlinkat, int, (int fd, char const *file, int flag));
1461# else
1462# if !@HAVE_UNLINKAT@
1463_GL_FUNCDECL_SYS (unlinkat, int, (int fd, char const *file, int flag)
1464 _GL_ARG_NONNULL ((2)));
1465# endif
1466_GL_CXXALIAS_SYS (unlinkat, int, (int fd, char const *file, int flag));
1467# endif
1468_GL_CXXALIASWARN (unlinkat);
1469#elif defined GNULIB_POSIXCHECK
1470# undef unlinkat
1471# if HAVE_RAW_DECL_UNLINKAT
1472_GL_WARN_ON_USE (unlinkat, "unlinkat is not portable - "
1473 "use gnulib module openat for portability");
1474# endif
1475#endif
1476
1477
1478#if @GNULIB_USLEEP@
1479/* Pause the execution of the current thread for N microseconds.
1480 Returns 0 on completion, or -1 on range error.
1481 See the POSIX:2001 specification
1482 <http://www.opengroup.org/susv3xsh/usleep.html>. */
1483# if @REPLACE_USLEEP@
1484# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1485# undef usleep
1486# define usleep rpl_usleep
1487# endif
1488_GL_FUNCDECL_RPL (usleep, int, (useconds_t n));
1489_GL_CXXALIAS_RPL (usleep, int, (useconds_t n));
1490# else
1491# if !@HAVE_USLEEP@
1492_GL_FUNCDECL_SYS (usleep, int, (useconds_t n));
1493# endif
1494_GL_CXXALIAS_SYS (usleep, int, (useconds_t n));
1495# endif
1496_GL_CXXALIASWARN (usleep);
1497#elif defined GNULIB_POSIXCHECK
1498# undef usleep
1499# if HAVE_RAW_DECL_USLEEP
1500_GL_WARN_ON_USE (usleep, "usleep is unportable - "
1501 "use gnulib module usleep for portability");
1502# endif
1503#endif
1504
1505
1506#if @GNULIB_WRITE@
1507/* Write up to COUNT bytes starting at BUF to file descriptor FD.
1508 See the POSIX:2008 specification
1509 <http://pubs.opengroup.org/onlinepubs/9699919799/functions/write.html>. */
1510# if @REPLACE_WRITE@
1511# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1512# undef write
1513# define write rpl_write
1514# endif
1515_GL_FUNCDECL_RPL (write, ssize_t, (int fd, const void *buf, size_t count)
1516 _GL_ARG_NONNULL ((2)));
1517_GL_CXXALIAS_RPL (write, ssize_t, (int fd, const void *buf, size_t count));
1518# else
1519/* Need to cast, because on mingw, the third parameter is
1520 unsigned int count
1521 and the return type is 'int'. */
1522_GL_CXXALIAS_SYS_CAST (write, ssize_t, (int fd, const void *buf, size_t count));
1523# endif
1524_GL_CXXALIASWARN (write);
1525#endif
1526
1527_GL_INLINE_HEADER_END
1528
1529#endif /* _@GUARD_PREFIX@_UNISTD_H */
1530#endif /* _@GUARD_PREFIX@_UNISTD_H */
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