+++ /dev/null
-/* Substitute for and wrapper around <unistd.h>.
- Copyright (C) 2003-2009 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 3, 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
-
-#if __GNUC__ >= 3
-@PRAGMA_SYSTEM_HEADER@
-#endif
-
-/* The include_next requires a split double-inclusion guard. */
-#if @HAVE_UNISTD_H@
-# @INCLUDE_NEXT@ @NEXT_UNISTD_H@
-#endif
-
-#ifndef _GL_UNISTD_H
-#define _GL_UNISTD_H
-
-/* NetBSD 5.0 mis-defines NULL. Also get size_t. */
-#include <stddef.h>
-
-/* mingw doesn't define the SEEK_* or *_FILENO macros in <unistd.h>. */
-#if !(defined SEEK_CUR && defined SEEK_END && defined SEEK_SET)
-# include <stdio.h>
-#endif
-
-/* mingw fails to declare _exit in <unistd.h>. */
-/* mingw, BeOS, Haiku declare environ in <stdlib.h>, not in <unistd.h>. */
-#include <stdlib.h>
-
-#if @GNULIB_WRITE@ && @REPLACE_WRITE@ && @GNULIB_UNISTD_H_SIGPIPE@
-/* Get ssize_t. */
-# include <sys/types.h>
-#endif
-
-/* Get getopt(), optarg, optind, opterr, optopt. */
-#if @GNULIB_UNISTD_H_GETOPT@
-# include <getopt.h>
-#endif
-
-#if @GNULIB_GETHOSTNAME@
-/* Get all possible declarations of gethostname(). */
-# if @UNISTD_H_HAVE_WINSOCK2_H@
-# include <winsock2.h>
-# if !defined _GL_SYS_SOCKET_H
-# undef socket
-# define socket socket_used_without_including_sys_socket_h
-# undef connect
-# define connect connect_used_without_including_sys_socket_h
-# undef accept
-# define accept accept_used_without_including_sys_socket_h
-# undef bind
-# define bind bind_used_without_including_sys_socket_h
-# undef getpeername
-# define getpeername getpeername_used_without_including_sys_socket_h
-# undef getsockname
-# define getsockname getsockname_used_without_including_sys_socket_h
-# undef getsockopt
-# define getsockopt getsockopt_used_without_including_sys_socket_h
-# undef listen
-# define listen listen_used_without_including_sys_socket_h
-# undef recv
-# define recv recv_used_without_including_sys_socket_h
-# undef send
-# define send send_used_without_including_sys_socket_h
-# undef recvfrom
-# define recvfrom recvfrom_used_without_including_sys_socket_h
-# undef sendto
-# define sendto sendto_used_without_including_sys_socket_h
-# undef setsockopt
-# define setsockopt setsockopt_used_without_including_sys_socket_h
-# undef shutdown
-# define shutdown shutdown_used_without_including_sys_socket_h
-# endif
-# if !defined _GL_SYS_SELECT_H
-# undef select
-# define select select_used_without_including_sys_select_h
-# endif
-# endif
-#endif
-
-/* The definition of GL_LINK_WARNING is copied here. */
-
-
-/* OS/2 EMX lacks these macros. */
-#ifndef STDIN_FILENO
-# define STDIN_FILENO 0
-#endif
-#ifndef STDOUT_FILENO
-# define STDOUT_FILENO 1
-#endif
-#ifndef STDERR_FILENO
-# define STDERR_FILENO 2
-#endif
-
-/* Declare overridden functions. */
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-
-#if @GNULIB_CHOWN@
-# if @REPLACE_CHOWN@
-# ifndef REPLACE_CHOWN
-# define REPLACE_CHOWN 1
-# endif
-# 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). Follow symbolic links.
- 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
-# 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_CLOSE@
-# if @REPLACE_CLOSE@
-/* Automatically included by modules that need a replacement for close. */
-# undef close
-# define close rpl_close
-extern int close (int);
-# endif
-#elif @UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@
-# undef close
-# define close close_used_without_requesting_gnulib_module_close
-#elif defined GNULIB_POSIXCHECK
-# undef close
-# define close(f) \
- (GL_LINK_WARNING ("close does not portably work on sockets - " \
- "use gnulib module close for portability"), \
- close (f))
-#endif
-
-
-#if @GNULIB_DUP2@
-# if @REPLACE_DUP2@
-# define dup2 rpl_dup2
-# endif
-# if !@HAVE_DUP2@ || @REPLACE_DUP2@
-/* Copy the file descriptor OLDFD into file descriptor NEWFD. Do nothing if
- NEWFD = OLDFD, otherwise close NEWFD first if it is open.
- Return newfd 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_DUP3@
-/* Copy the file descriptor OLDFD into file descriptor NEWFD, with the
- specified flags.
- The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
- and O_TEXT, O_BINARY (defined in "binary-io.h").
- Close NEWFD first if it is open.
- Return newfd if successful, otherwise -1 and errno set.
- See the Linux man page at
- <http://www.kernel.org/doc/man-pages/online/pages/man2/dup3.2.html>. */
-# if @HAVE_DUP3@
-# define dup3 rpl_dup3
-# endif
-extern int dup3 (int oldfd, int newfd, int flags);
-#elif defined GNULIB_POSIXCHECK
-# undef dup3
-# define dup3(o,n,f) \
- (GL_LINK_WARNING ("dup3 is unportable - " \
- "use gnulib module dup3 for portability"), \
- dup3 (o, n, f))
-#endif
-
-
-#if @GNULIB_ENVIRON@
-# if !@HAVE_DECL_ENVIRON@
-/* Set of environment variables and values. An array of strings of the form
- "VARIABLE=VALUE", terminated with a NULL. */
-# if defined __APPLE__ && defined __MACH__
-# include <crt_externs.h>
-# define environ (*_NSGetEnviron ())
-# else
-extern char **environ;
-# endif
-# endif
-#elif defined GNULIB_POSIXCHECK
-# undef environ
-# define environ \
- (GL_LINK_WARNING ("environ is unportable - " \
- "use gnulib module environ for portability"), \
- environ)
-#endif
-
-
-#if @GNULIB_EUIDACCESS@
-# if !@HAVE_EUIDACCESS@
-/* Like access(), except that is uses the effective user id and group id of
- the current process. */
-extern int euidaccess (const char *filename, int mode);
-# endif
-#elif defined GNULIB_POSIXCHECK
-# undef euidaccess
-# define euidaccess(f,m) \
- (GL_LINK_WARNING ("euidaccess is unportable - " \
- "use gnulib module euidaccess for portability"), \
- euidaccess (f, m))
-#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 dup rpl_dup
-extern int dup (int);
-
-/* Gnulib internal hooks needed to maintain the fchdir metadata. */
-extern int _gl_register_fd (int fd, const char *filename);
-extern void _gl_unregister_fd (int fd);
-extern int _gl_register_dup (int oldfd, int newfd);
-extern const char *_gl_directory_name (int fd);
-
-# 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_FSYNC@
-/* Synchronize changes to a file.
- Return 0 if successful, otherwise -1 and errno set.
- See POSIX:2001 specification
- <http://www.opengroup.org/susv3xsh/fsync.html>. */
-# if !@HAVE_FSYNC@
-extern int fsync (int fd);
-# endif
-#elif defined GNULIB_POSIXCHECK
-# undef fsync
-# define fsync(fd) \
- (GL_LINK_WARNING ("fsync is unportable - " \
- "use gnulib module fsync for portability"), \
- fsync (fd))
-#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_GETDOMAINNAME@
-/* Return the NIS domain name of the machine.
- WARNING! The NIS domain name is unrelated to the fully qualified host name
- of the machine. It is also unrelated to email addresses.
- WARNING! The NIS domain name is usually the empty string or "(none)" when
- not using NIS.
-
- Put up to LEN bytes of the NIS domain name into NAME.
- Null terminate it if the name is shorter than LEN.
- If the NIS domain name is longer than LEN, set errno = EINVAL and return -1.
- Return 0 if successful, otherwise set errno and return -1. */
-# if !@HAVE_GETDOMAINNAME@
-extern int getdomainname(char *name, size_t len);
-# endif
-#elif defined GNULIB_POSIXCHECK
-# undef getdomainname
-# define getdomainname(n,l) \
- (GL_LINK_WARNING ("getdomainname is unportable - " \
- "use gnulib module getdomainname for portability"), \
- getdomainname (n, l))
-#endif
-
-
-#if @GNULIB_GETDTABLESIZE@
-# if !@HAVE_GETDTABLESIZE@
-/* Return the maximum number of file descriptors in the current process.
- In POSIX, this is same as sysconf (_SC_OPEN_MAX). */
-extern int getdtablesize (void);
-# endif
-#elif defined GNULIB_POSIXCHECK
-# undef getdtablesize
-# define getdtablesize() \
- (GL_LINK_WARNING ("getdtablesize is unportable - " \
- "use gnulib module getdtablesize for portability"), \
- getdtablesize ())
-#endif
-
-
-#if @GNULIB_GETHOSTNAME@
-/* Return the standard host name of the machine.
- WARNING! The host name may or may not be fully qualified.
-
- Put up to LEN bytes of the host name into NAME.
- Null terminate it if the name is shorter than LEN.
- If the host name is longer than LEN, set errno = EINVAL and return -1.
- Return 0 if successful, otherwise set errno and return -1. */
-# if @UNISTD_H_HAVE_WINSOCK2_H@
-# undef gethostname
-# define gethostname rpl_gethostname
-# endif
-# if @UNISTD_H_HAVE_WINSOCK2_H@ || !@HAVE_GETHOSTNAME@
-extern int gethostname(char *name, size_t len);
-# endif
-#elif @UNISTD_H_HAVE_WINSOCK2_H@
-# undef gethostname
-# define gethostname gethostname_used_without_requesting_gnulib_module_gethostname
-#elif defined GNULIB_POSIXCHECK
-# undef gethostname
-# define gethostname(n,l) \
- (GL_LINK_WARNING ("gethostname is unportable - " \
- "use gnulib module gethostname for portability"), \
- gethostname (n, l))
-#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@
-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_GETPAGESIZE@
-# if @REPLACE_GETPAGESIZE@
-# define getpagesize rpl_getpagesize
-extern int getpagesize (void);
-# elif !@HAVE_GETPAGESIZE@
-/* This is for POSIX systems. */
-# if !defined getpagesize && defined _SC_PAGESIZE
-# if ! (defined __VMS && __VMS_VER < 70000000)
-# define getpagesize() sysconf (_SC_PAGESIZE)
-# endif
-# endif
-/* This is for older VMS. */
-# if !defined getpagesize && defined __VMS
-# ifdef __ALPHA
-# define getpagesize() 8192
-# else
-# define getpagesize() 512
-# endif
-# endif
-/* This is for BeOS. */
-# if !defined getpagesize && @HAVE_OS_H@
-# include <OS.h>
-# if defined B_PAGE_SIZE
-# define getpagesize() B_PAGE_SIZE
-# endif
-# endif
-/* This is for AmigaOS4.0. */
-# if !defined getpagesize && defined __amigaos4__
-# define getpagesize() 2048
-# endif
-/* This is for older Unix systems. */
-# if !defined getpagesize && @HAVE_SYS_PARAM_H@
-# include <sys/param.h>
-# ifdef EXEC_PAGESIZE
-# define getpagesize() EXEC_PAGESIZE
-# else
-# ifdef NBPG
-# ifndef CLSIZE
-# define CLSIZE 1
-# endif
-# define getpagesize() (NBPG * CLSIZE)
-# else
-# ifdef NBPC
-# define getpagesize() NBPC
-# endif
-# endif
-# endif
-# endif
-# endif
-#elif defined GNULIB_POSIXCHECK
-# undef getpagesize
-# define getpagesize() \
- (GL_LINK_WARNING ("getpagesize is unportable - " \
- "use gnulib module getpagesize for portability"), \
- getpagesize ())
-#endif
-
-
-#if @GNULIB_GETUSERSHELL@
-# if !@HAVE_GETUSERSHELL@
-/* Return the next valid login shell on the system, or NULL when the end of
- the list has been reached. */
-extern char *getusershell (void);
-/* Rewind to pointer that is advanced at each getusershell() call. */
-extern void setusershell (void);
-/* Free the pointer that is advanced at each getusershell() call and
- associated resources. */
-extern void endusershell (void);
-# endif
-#elif defined GNULIB_POSIXCHECK
-# undef getusershell
-# define getusershell() \
- (GL_LINK_WARNING ("getusershell is unportable - " \
- "use gnulib module getusershell for portability"), \
- getusershell ())
-# undef setusershell
-# define setusershell() \
- (GL_LINK_WARNING ("setusershell is unportable - " \
- "use gnulib module getusershell for portability"), \
- setusershell ())
-# undef endusershell
-# define endusershell() \
- (GL_LINK_WARNING ("endusershell is unportable - " \
- "use gnulib module getusershell for portability"), \
- endusershell ())
-#endif
-
-
-#if @GNULIB_LCHOWN@
-# if @REPLACE_LCHOWN@
-/* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
- to GID (if GID is not -1). Do not follow symbolic links.
- Return 0 if successful, otherwise -1 and errno set.
- See the POSIX:2001 specification
- <http://www.opengroup.org/susv3xsh/lchown.html>. */
-# define lchown rpl_lchown
-extern int lchown (char const *file, uid_t owner, gid_t group);
-# endif
-#elif defined GNULIB_POSIXCHECK
-# undef lchown
-# define lchown(f,u,g) \
- (GL_LINK_WARNING ("lchown is unportable to pre-POSIX.1-2001 " \
- "systems - use gnulib module lchown for portability"), \
- lchown (f, u, g))
-#endif
-
-
-#if @GNULIB_LINK@
-/* Create a new hard link for an existing file.
- Return 0 if successful, otherwise -1 and errno set.
- See POSIX:2001 specification
- <http://www.opengroup.org/susv3xsh/link.html>. */
-# if !@HAVE_LINK@
-extern int link (const char *path1, const char *path2);
-# endif
-#elif defined GNULIB_POSIXCHECK
-# undef link
-# define link(path1,path2) \
- (GL_LINK_WARNING ("link is unportable - " \
- "use gnulib module link for portability"), \
- link (path1, path2))
-#endif
-
-
-#if @GNULIB_LSEEK@
-# if @REPLACE_LSEEK@
-/* Set the offset of FD relative to SEEK_SET, SEEK_CUR, or SEEK_END.
- Return the new offset if successful, otherwise -1 and errno set.
- See the POSIX:2001 specification
- <http://www.opengroup.org/susv3xsh/lseek.html>. */
-# define lseek rpl_lseek
- extern off_t lseek (int fd, off_t offset, int whence);
-# endif
-#elif defined GNULIB_POSIXCHECK
-# undef lseek
-# define lseek(f,o,w) \
- (GL_LINK_WARNING ("lseek does not fail with ESPIPE on pipes on some " \
- "systems - use gnulib module lseek for portability"), \
- lseek (f, o, w))
-#endif
-
-
-#if @GNULIB_PIPE2@
-/* Create a pipe, applying the given flags when opening the read-end of the
- pipe and the write-end of the pipe.
- The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
- and O_TEXT, O_BINARY (defined in "binary-io.h").
- Store the read-end as fd[0] and the write-end as fd[1].
- Return 0 upon success, or -1 with errno set upon failure.
- See also the Linux man page at
- <http://www.kernel.org/doc/man-pages/online/pages/man2/pipe2.2.html>. */
-# if @HAVE_PIPE2@
-# define pipe2 rpl_pipe2
-# endif
-extern int pipe2 (int fd[2], int flags);
-#elif defined GNULIB_POSIXCHECK
-# undef pipe2
-# define pipe2(f,o) \
- (GL_LINK_WARNING ("pipe2 is unportable - " \
- "use gnulib module pipe2 for portability"), \
- pipe2 (f, o))
-#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@
-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
-
-
-#if @GNULIB_SLEEP@
-/* Pause the execution of the current thread for N seconds.
- Returns the number of seconds left to sleep.
- See the POSIX:2001 specification
- <http://www.opengroup.org/susv3xsh/sleep.html>. */
-# if !@HAVE_SLEEP@
-extern unsigned int sleep (unsigned int n);
-# endif
-#elif defined GNULIB_POSIXCHECK
-# undef sleep
-# define sleep(n) \
- (GL_LINK_WARNING ("sleep is unportable - " \
- "use gnulib module sleep for portability"), \
- sleep (n))
-#endif
-
-
-#if @GNULIB_WRITE@ && @REPLACE_WRITE@ && @GNULIB_UNISTD_H_SIGPIPE@
-/* Write up to COUNT bytes starting at BUF to file descriptor FD.
- See the POSIX:2001 specification
- <http://www.opengroup.org/susv3xsh/write.html>. */
-# undef write
-# define write rpl_write
-extern ssize_t write (int fd, const void *buf, size_t count);
-#endif
-
-
-#ifdef __cplusplus
-}
-#endif
-
-
-#endif /* _GL_UNISTD_H */
-#endif /* _GL_UNISTD_H */
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