--- /dev/null
+/* Substitute for and wrapper around <unistd.h>.
+ Copyright (C) 2004-2007 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software Foundation,
+ Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#ifndef _GL_UNISTD_H
+#define _GL_UNISTD_H
+
+#if @HAVE_UNISTD_H@
+# include @ABSOLUTE_UNISTD_H@
+#endif
+
+
+/* The definition of GL_LINK_WARNING is copied here. */
+
+
+/* Declare overridden functions. */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#if @GNULIB_CHOWN@
+# if @REPLACE_CHOWN@
+/* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
+ to GID (if GID is not -1).
+ Return 0 if successful, otherwise -1 and errno set.
+ See the POSIX:2001 specification
+ <http://www.opengroup.org/susv3xsh/chown.html>. */
+# define chown rpl_chown
+extern int chown (const char *file, uid_t uid, gid_t gid);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef chown
+# define chown(f,u,g) \
+ (GL_LINK_WARNING ("chown fails to follow symlinks on some systems and " \
+ "doesn't treat a uid or gid of -1 on some systems - " \
+ "use gnulib module chown for portability"), \
+ chown (f, u, g))
+#endif
+
+
+#if @GNULIB_DUP2@
+# if !@HAVE_DUP2@
+/* Copy the file descriptor OLDFD into file descriptor NEWFD. Do nothing if
+ NEWFD = OLDFD, otherwise close NEWFD first if it is open.
+ Return 0 if successful, otherwise -1 and errno set.
+ See the POSIX:2001 specification
+ <http://www.opengroup.org/susv3xsh/dup2.html>. */
+extern int dup2 (int oldfd, int newfd);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef dup2
+# define dup2(o,n) \
+ (GL_LINK_WARNING ("dup2 is unportable - " \
+ "use gnulib module dup2 for portability"), \
+ dup2 (o, n))
+#endif
+
+
+#if @GNULIB_FCHDIR@
+# if @REPLACE_FCHDIR@
+
+/* Change the process' current working directory to the directory on which
+ the given file descriptor is open.
+ Return 0 if successful, otherwise -1 and errno set.
+ See the POSIX:2001 specification
+ <http://www.opengroup.org/susv3xsh/fchdir.html>. */
+extern int fchdir (int /*fd*/);
+
+# define close rpl_close
+extern int close (int);
+# define dup rpl_dup
+extern int dup (int);
+# define dup2 rpl_dup2
+extern int dup2 (int, int);
+
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef fchdir
+# define fchdir(f) \
+ (GL_LINK_WARNING ("fchdir is unportable - " \
+ "use gnulib module fchdir for portability"), \
+ fchdir (f))
+#endif
+
+
+#if @GNULIB_FTRUNCATE@
+# if !@HAVE_FTRUNCATE@
+/* Change the size of the file to which FD is opened to become equal to LENGTH.
+ Return 0 if successful, otherwise -1 and errno set.
+ See the POSIX:2001 specification
+ <http://www.opengroup.org/susv3xsh/ftruncate.html>. */
+extern int ftruncate (int fd, off_t length);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef ftruncate
+# define ftruncate(f,l) \
+ (GL_LINK_WARNING ("ftruncate is unportable - " \
+ "use gnulib module ftruncate for portability"), \
+ ftruncate (f, l))
+#endif
+
+
+#if @GNULIB_GETCWD@
+/* Include the headers that might declare getcwd so that they will not
+ cause confusion if included after this file. */
+# include <stdlib.h>
+# if @REPLACE_GETCWD@
+/* Get the name of the current working directory, and put it in SIZE bytes
+ of BUF.
+ Return BUF if successful, or NULL if the directory couldn't be determined
+ or SIZE was too small.
+ See the POSIX:2001 specification
+ <http://www.opengroup.org/susv3xsh/getcwd.html>.
+ Additionally, the gnulib module 'getcwd' guarantees the following GNU
+ extension: If BUF is NULL, an array is allocated with 'malloc'; the array
+ is SIZE bytes long, unless SIZE == 0, in which case it is as big as
+ necessary. */
+# define getcwd rpl_getcwd
+extern char * getcwd (char *buf, size_t size);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef getcwd
+# define getcwd(b,s) \
+ (GL_LINK_WARNING ("getcwd is unportable - " \
+ "use gnulib module getcwd for portability"), \
+ getcwd (b, s))
+#endif
+
+
+#if @GNULIB_GETLOGIN_R@
+/* Copies the user's login name to NAME.
+ The array pointed to by NAME has room for SIZE bytes.
+
+ Returns 0 if successful. Upon error, an error number is returned, or -1 in
+ the case that the login name cannot be found but no specific error is
+ provided (this case is hopefully rare but is left open by the POSIX spec).
+
+ See <http://www.opengroup.org/susv3xsh/getlogin.html>.
+ */
+# if !@HAVE_DECL_GETLOGIN_R@
+# include <stddef.h>
+extern int getlogin_r (char *name, size_t size);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef getlogin_r
+# define getlogin_r(n,s) \
+ (GL_LINK_WARNING ("getlogin_r is unportable - " \
+ "use gnulib module getlogin_r for portability"), \
+ getlogin_r (n, s))
+#endif
+
+
+#if @GNULIB_READLINK@
+/* Read the contents of the symbolic link FILE and place the first BUFSIZE
+ bytes of it into BUF. Return the number of bytes placed into BUF if
+ successful, otherwise -1 and errno set.
+ See the POSIX:2001 specification
+ <http://www.opengroup.org/susv3xsh/readlink.html>. */
+# if !@HAVE_READLINK@
+# include <stddef.h>
+extern int readlink (const char *file, char *buf, size_t bufsize);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef readlink
+# define readlink(f,b,s) \
+ (GL_LINK_WARNING ("readlink is unportable - " \
+ "use gnulib module readlink for portability"), \
+ readlink (f, b, s))
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* _GL_UNISTD_H */
projects / gzip / blobdiff