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f15efcdf27
* tests/Makefile.am (test_scripts): Add vcpupin. (EXTRA_DIST): Add test-lib.sh. * tests/test-lib.sh: Testing framework, from coreutils. * tests/vcpupin: New file. * build-aux/mktempd: New file, from gnulib. * bootstrap: Add posix-shell and mktempd to the list of imported modules. * gnulib/m4/posix-shell.m4: New file, from gnulib.
341 lines
10 KiB
C
341 lines
10 KiB
C
/* Substitute for and wrapper around <unistd.h>.
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Copyright (C) 2004-2008 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 Lesser General Public License as published by
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the Free Software Foundation; either version 2.1, 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 Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser 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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/* 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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#ifndef _GL_UNISTD_H
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#define _GL_UNISTD_H
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/* mingw doesn't define the SEEK_* 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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#include <stdlib.h>
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/* The definition of GL_LINK_WARNING is copied here. */
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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
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to GID (if GID is not -1). Follow symbolic links.
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Return 0 if successful, otherwise -1 and errno set.
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See the POSIX:2001 specification
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<http://www.opengroup.org/susv3xsh/chown.html>. */
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# define chown rpl_chown
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extern int chown (const char *file, uid_t uid, gid_t gid);
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# 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 - " \
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"use gnulib module chown for portability"), \
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chown (f, u, g))
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#endif
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#if @GNULIB_DUP2@
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# if !@HAVE_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 0 if successful, otherwise -1 and errno set.
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See the POSIX:2001 specification
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<http://www.opengroup.org/susv3xsh/dup2.html>. */
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extern int dup2 (int oldfd, int newfd);
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# endif
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#elif defined GNULIB_POSIXCHECK
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# undef dup2
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# define dup2(o,n) \
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(GL_LINK_WARNING ("dup2 is unportable - " \
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"use gnulib module dup2 for portability"), \
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dup2 (o, n))
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#endif
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#if @GNULIB_ENVIRON@
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# 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. */
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# if defined __APPLE__ && defined __MACH__
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# include <crt_externs.h>
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# define environ (*_NSGetEnviron ())
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# else
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extern char **environ;
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# endif
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# endif
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#elif defined GNULIB_POSIXCHECK
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# undef environ
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# define environ \
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(GL_LINK_WARNING ("environ is unportable - " \
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"use gnulib module environ for portability"), \
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environ)
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#endif
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#if @GNULIB_FCHDIR@
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# if @REPLACE_FCHDIR@
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/* Change the process' current working directory to the directory on which
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the given file descriptor is open.
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Return 0 if successful, otherwise -1 and errno set.
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See the POSIX:2001 specification
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<http://www.opengroup.org/susv3xsh/fchdir.html>. */
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extern int fchdir (int /*fd*/);
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# define close rpl_close
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extern int close (int);
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# define dup rpl_dup
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extern int dup (int);
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# define dup2 rpl_dup2
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extern int dup2 (int, int);
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# endif
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#elif defined GNULIB_POSIXCHECK
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# undef fchdir
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# define fchdir(f) \
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(GL_LINK_WARNING ("fchdir is unportable - " \
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"use gnulib module fchdir for portability"), \
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fchdir (f))
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#endif
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#if @GNULIB_FTRUNCATE@
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# if !@HAVE_FTRUNCATE@
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/* Change the size of the file to which FD is opened to become equal to LENGTH.
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Return 0 if successful, otherwise -1 and errno set.
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See the POSIX:2001 specification
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<http://www.opengroup.org/susv3xsh/ftruncate.html>. */
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extern int ftruncate (int fd, off_t length);
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# endif
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#elif defined GNULIB_POSIXCHECK
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# undef ftruncate
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# define ftruncate(f,l) \
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(GL_LINK_WARNING ("ftruncate is unportable - " \
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"use gnulib module ftruncate for portability"), \
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ftruncate (f, l))
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#endif
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#if @GNULIB_GETCWD@
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/* Include the headers that might declare getcwd so that they will not
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cause confusion if included after this file. */
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# include <stdlib.h>
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# if @REPLACE_GETCWD@
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/* Get the name of the current working directory, and put it in SIZE bytes
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of BUF.
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Return BUF if successful, or NULL if the directory couldn't be determined
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or SIZE was too small.
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See the POSIX:2001 specification
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<http://www.opengroup.org/susv3xsh/getcwd.html>.
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Additionally, the gnulib module 'getcwd' guarantees the following GNU
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extension: If BUF is NULL, an array is allocated with 'malloc'; the array
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is SIZE bytes long, unless SIZE == 0, in which case it is as big as
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necessary. */
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# define getcwd rpl_getcwd
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extern char * getcwd (char *buf, size_t size);
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# endif
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#elif defined GNULIB_POSIXCHECK
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# undef getcwd
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# define getcwd(b,s) \
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(GL_LINK_WARNING ("getcwd is unportable - " \
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"use gnulib module getcwd for portability"), \
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getcwd (b, s))
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#endif
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#if @GNULIB_GETLOGIN_R@
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/* Copies the user's login name to NAME.
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The array pointed to by NAME has room for SIZE bytes.
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Returns 0 if successful. Upon error, an error number is returned, or -1 in
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the case that the login name cannot be found but no specific error is
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provided (this case is hopefully rare but is left open by the POSIX spec).
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See <http://www.opengroup.org/susv3xsh/getlogin.html>.
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*/
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# if !@HAVE_DECL_GETLOGIN_R@
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# include <stddef.h>
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extern int getlogin_r (char *name, size_t size);
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# endif
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#elif defined GNULIB_POSIXCHECK
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# undef getlogin_r
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# define getlogin_r(n,s) \
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(GL_LINK_WARNING ("getlogin_r is unportable - " \
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"use gnulib module getlogin_r for portability"), \
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getlogin_r (n, s))
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#endif
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#if @GNULIB_GETPAGESIZE@
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# if @REPLACE_GETPAGESIZE@
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# define getpagesize rpl_getpagesize
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extern int getpagesize (void);
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# elif !@HAVE_GETPAGESIZE@
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/* This is for POSIX systems. */
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# if !defined getpagesize && defined _SC_PAGESIZE
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# if ! (defined __VMS && __VMS_VER < 70000000)
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# define getpagesize() sysconf (_SC_PAGESIZE)
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# endif
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# endif
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/* This is for older VMS. */
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# if !defined getpagesize && defined __VMS
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# ifdef __ALPHA
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# define getpagesize() 8192
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# else
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# define getpagesize() 512
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# endif
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# endif
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/* This is for BeOS. */
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# if !defined getpagesize && @HAVE_OS_H@
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# include <OS.h>
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# if defined B_PAGE_SIZE
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# define getpagesize() B_PAGE_SIZE
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# endif
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# endif
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/* This is for AmigaOS4.0. */
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# if !defined getpagesize && defined __amigaos4__
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# define getpagesize() 2048
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# endif
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/* This is for older Unix systems. */
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# if !defined getpagesize && @HAVE_SYS_PARAM_H@
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# include <sys/param.h>
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# ifdef EXEC_PAGESIZE
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# define getpagesize() EXEC_PAGESIZE
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# else
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# ifdef NBPG
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# ifndef CLSIZE
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# define CLSIZE 1
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# endif
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# define getpagesize() (NBPG * CLSIZE)
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# else
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# ifdef NBPC
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# define getpagesize() NBPC
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# endif
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# endif
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# endif
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# endif
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# endif
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#elif defined GNULIB_POSIXCHECK
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# undef getpagesize
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# define getpagesize() \
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(GL_LINK_WARNING ("getpagesize is unportable - " \
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"use gnulib module getpagesize for portability"), \
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getpagesize ())
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#endif
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#if @GNULIB_LCHOWN@
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# if @REPLACE_LCHOWN@
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/* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
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to GID (if GID is not -1). Do not follow symbolic links.
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Return 0 if successful, otherwise -1 and errno set.
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See the POSIX:2001 specification
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<http://www.opengroup.org/susv3xsh/lchown.html>. */
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# define lchown rpl_lchown
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extern int lchown (char const *file, uid_t owner, gid_t group);
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# endif
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#elif defined GNULIB_POSIXCHECK
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# undef lchown
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# define lchown(f,u,g) \
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(GL_LINK_WARNING ("lchown is unportable to pre-POSIX.1-2001 " \
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"systems - use gnulib module lchown for portability"), \
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lchown (f, u, g))
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#endif
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#if @GNULIB_LSEEK@
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# if @REPLACE_LSEEK@
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/* Set the offset of FD relative to SEEK_SET, SEEK_CUR, or SEEK_END.
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Return the new offset if successful, otherwise -1 and errno set.
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See the POSIX:2001 specification
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<http://www.opengroup.org/susv3xsh/lseek.html>. */
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# define lseek rpl_lseek
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extern off_t lseek (int fd, off_t offset, int whence);
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# endif
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#elif defined GNULIB_POSIXCHECK
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# undef lseek
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# define lseek(f,o,w) \
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(GL_LINK_WARNING ("lseek does not fail with ESPIPE on pipes on some " \
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"systems - use gnulib module lseek for portability"), \
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lseek (f, o, w))
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#endif
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#if @GNULIB_READLINK@
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/* Read the contents of the symbolic link FILE and place the first BUFSIZE
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bytes of it into BUF. Return the number of bytes placed into BUF if
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successful, otherwise -1 and errno set.
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See the POSIX:2001 specification
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<http://www.opengroup.org/susv3xsh/readlink.html>. */
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# if !@HAVE_READLINK@
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# include <stddef.h>
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extern int readlink (const char *file, char *buf, size_t bufsize);
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# endif
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#elif defined GNULIB_POSIXCHECK
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# undef readlink
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# define readlink(f,b,s) \
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(GL_LINK_WARNING ("readlink is unportable - " \
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"use gnulib module readlink for portability"), \
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readlink (f, b, s))
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#endif
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#if @GNULIB_SLEEP@
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/* Pause the execution of the current thread for N seconds.
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Returns the number of seconds left to sleep.
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See the POSIX:2001 specification
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<http://www.opengroup.org/susv3xsh/sleep.html>. */
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# if !@HAVE_SLEEP@
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extern unsigned int sleep (unsigned int n);
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# endif
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#elif defined GNULIB_POSIXCHECK
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# undef sleep
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# define sleep(n) \
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(GL_LINK_WARNING ("sleep is unportable - " \
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"use gnulib module sleep for portability"), \
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sleep (n))
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _GL_UNISTD_H */
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#endif /* _GL_UNISTD_H */
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