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/* Substitute for and wrapper around <unistd.h>.
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Copyright (C) 2003-2010 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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@PRAGMA_SYSTEM_HEADER@
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/* Special invocation convention:
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- On mingw, several headers, including <winsock2.h>, include <unistd.h>,
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but we need to ensure that both the system <unistd.h> and <winsock2.h>
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are completely included before we replace gethostname. */
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#if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@ \
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&& !defined _GL_WINSOCK2_H_WITNESS && defined _WINSOCK2_H
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/* <unistd.h> is being indirectly included for the first time from
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<winsock2.h>; avoid declaring any overrides. */
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# @INCLUDE_NEXT@ @NEXT_UNISTD_H@
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# error unexpected; report this to bug-gnulib@gnu.org
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# define _GL_WINSOCK2_H_WITNESS
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/* Normal invocation. */
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#elif !defined _GL_UNISTD_H
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/* The include_next requires a split double-inclusion guard. */
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# @INCLUDE_NEXT@ @NEXT_UNISTD_H@
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/* Get all possible declarations of gethostname(). */
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#if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@ \
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&& !defined _GL_INCLUDING_WINSOCK2_H
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# define _GL_INCLUDING_WINSOCK2_H
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# include <winsock2.h>
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# undef _GL_INCLUDING_WINSOCK2_H
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#if !defined _GL_UNISTD_H && !defined _GL_INCLUDING_WINSOCK2_H
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/* NetBSD 5.0 mis-defines NULL. Also get size_t. */
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/* mingw doesn't define the SEEK_* or *_FILENO macros in <unistd.h>. */
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/* Cygwin 1.7.1 declares symlinkat in <stdio.h>, not in <unistd.h>. */
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/* But avoid namespace pollution on glibc systems. */
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#if (!(defined SEEK_CUR && defined SEEK_END && defined SEEK_SET) \
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|| (@GNULIB_SYMLINKAT@ || defined GNULIB_POSIXCHECK)) \
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&& ! defined __GLIBC__
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/* Cygwin 1.7.1 declares unlinkat in <fcntl.h>, not in <unistd.h>. */
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/* But avoid namespace pollution on glibc systems. */
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#if (@GNULIB_UNLINKAT@ || defined GNULIB_POSIXCHECK) && ! defined __GLIBC__
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/* mingw fails to declare _exit in <unistd.h>. */
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/* mingw, BeOS, Haiku declare environ in <stdlib.h>, not in <unistd.h>. */
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/* Solaris declares getcwd not only in <unistd.h> but also in <stdlib.h>. */
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/* But avoid namespace pollution on glibc systems. */
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/* mingw declares getcwd in <io.h>, not in <unistd.h>. */
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#if ((@GNULIB_GETCWD@ || defined GNULIB_POSIXCHECK) \
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&& ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__))
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#if (@GNULIB_WRITE@ || @GNULIB_READLINK@ || @GNULIB_READLINKAT@ \
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|| @GNULIB_PREAD@ || @GNULIB_PWRITE@ || defined GNULIB_POSIXCHECK)
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# include <sys/types.h>
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/* Get getopt(), optarg, optind, opterr, optopt.
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But avoid namespace pollution on glibc systems. */
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#if @GNULIB_UNISTD_H_GETOPT@ && !defined __GLIBC__ && !defined _GL_SYSTEM_GETOPT
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/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
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/* The definition of _GL_ARG_NONNULL is copied here. */
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/* The definition of _GL_WARN_ON_USE is copied here. */
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#if @GNULIB_GETHOSTNAME@
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/* Get all possible declarations of gethostname(). */
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# if @UNISTD_H_HAVE_WINSOCK2_H@
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# if !defined _GL_SYS_SOCKET_H
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# define socket socket_used_without_including_sys_socket_h
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# define connect connect_used_without_including_sys_socket_h
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# define accept accept_used_without_including_sys_socket_h
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# define bind bind_used_without_including_sys_socket_h
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# define getpeername getpeername_used_without_including_sys_socket_h
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# define getsockname getsockname_used_without_including_sys_socket_h
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# define getsockopt getsockopt_used_without_including_sys_socket_h
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# define listen listen_used_without_including_sys_socket_h
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# define recv recv_used_without_including_sys_socket_h
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# define send send_used_without_including_sys_socket_h
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# define recvfrom recvfrom_used_without_including_sys_socket_h
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# define sendto sendto_used_without_including_sys_socket_h
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# define setsockopt setsockopt_used_without_including_sys_socket_h
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# define shutdown shutdown_used_without_including_sys_socket_h
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_GL_WARN_ON_USE (socket,
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"socket() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (connect,
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"connect() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (accept,
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"accept() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (bind,
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"bind() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (getpeername,
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"getpeername() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (getsockname,
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"getsockname() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (getsockopt,
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"getsockopt() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (listen,
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"listen() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (recv,
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"recv() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (send,
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"send() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (recvfrom,
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"recvfrom() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (sendto,
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"sendto() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (setsockopt,
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"setsockopt() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (shutdown,
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"shutdown() used without including <sys/socket.h>");
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# if !defined _GL_SYS_SELECT_H
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# define select select_used_without_including_sys_select_h
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_GL_WARN_ON_USE (select,
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"select() used without including <sys/select.h>");
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/* OS/2 EMX lacks these macros. */
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# define STDIN_FILENO 0
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#ifndef STDOUT_FILENO
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# define STDOUT_FILENO 1
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#ifndef STDERR_FILENO
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# define STDERR_FILENO 2
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/* Ensure *_OK macros exist. */
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/* Declare overridden functions. */
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#if defined GNULIB_POSIXCHECK
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/* The access() function is a security risk. */
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_GL_WARN_ON_USE (access, "the access function is a security risk - "
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"use the gnulib module faccessat instead");
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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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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# define chown rpl_chown
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_GL_FUNCDECL_RPL (chown, int, (const char *file, uid_t uid, gid_t gid)
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_GL_ARG_NONNULL ((1)));
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_GL_CXXALIAS_RPL (chown, int, (const char *file, uid_t uid, gid_t gid));
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_GL_FUNCDECL_SYS (chown, int, (const char *file, uid_t uid, gid_t gid)
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_GL_ARG_NONNULL ((1)));
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_GL_CXXALIAS_SYS (chown, int, (const char *file, uid_t uid, gid_t gid));
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_GL_CXXALIASWARN (chown);
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#elif defined GNULIB_POSIXCHECK
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# if HAVE_RAW_DECL_CHOWN
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_GL_WARN_ON_USE (chown, "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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/* Automatically included by modules that need a replacement for close. */
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# define close rpl_close
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_GL_FUNCDECL_RPL (close, int, (int fd));
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_GL_CXXALIAS_RPL (close, int, (int fd));
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_GL_CXXALIAS_SYS (close, int, (int fd));
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_GL_CXXALIASWARN (close);
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#elif @UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS@
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# define close close_used_without_requesting_gnulib_module_close
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#elif defined GNULIB_POSIXCHECK
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/* Assume close is always declared. */
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_GL_WARN_ON_USE (close, "close does not portably work on sockets - "
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"use gnulib module close for portability");
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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_GL_FUNCDECL_RPL (dup, int, (int oldfd));
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_GL_CXXALIAS_RPL (dup, int, (int oldfd));
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_GL_CXXALIAS_SYS (dup, int, (int oldfd));
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_GL_CXXALIASWARN (dup);
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/* Copy the file descriptor OLDFD into file descriptor NEWFD. Do nothing if
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NEWFD = OLDFD, otherwise close NEWFD first if it is open.
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Return newfd if successful, otherwise -1 and errno set.
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See the POSIX:2001 specification
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<http://www.opengroup.org/susv3xsh/dup2.html>. */
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# define dup2 rpl_dup2
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_GL_FUNCDECL_RPL (dup2, int, (int oldfd, int newfd));
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_GL_CXXALIAS_RPL (dup2, int, (int oldfd, int newfd));
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_GL_FUNCDECL_SYS (dup2, int, (int oldfd, int newfd));
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_GL_CXXALIAS_SYS (dup2, int, (int oldfd, int newfd));
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_GL_CXXALIASWARN (dup2);
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#elif defined GNULIB_POSIXCHECK
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# if HAVE_RAW_DECL_DUP2
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_GL_WARN_ON_USE (dup2, "dup2 is unportable - "
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"use gnulib module dup2 for portability");
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/* Copy the file descriptor OLDFD into file descriptor NEWFD, with the
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The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
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and O_TEXT, O_BINARY (defined in "binary-io.h").
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Close NEWFD first if it is open.
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Return newfd if successful, otherwise -1 and errno set.
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See the Linux man page at
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<http://www.kernel.org/doc/man-pages/online/pages/man2/dup3.2.html>. */
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# define dup3 rpl_dup3
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_GL_FUNCDECL_RPL (dup3, int, (int oldfd, int newfd, int flags));
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_GL_CXXALIAS_RPL (dup3, int, (int oldfd, int newfd, int flags));
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_GL_FUNCDECL_SYS (dup3, int, (int oldfd, int newfd, int flags));
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_GL_CXXALIAS_SYS (dup3, int, (int oldfd, int newfd, int flags));
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_GL_CXXALIASWARN (dup3);
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#elif defined GNULIB_POSIXCHECK
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# if HAVE_RAW_DECL_DUP3
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_GL_WARN_ON_USE (dup3, "dup3 is unportable - "
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"use gnulib module dup3 for portability");
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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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extern char **environ;
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#elif defined GNULIB_POSIXCHECK
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# if HAVE_RAW_DECL_ENVIRON
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static inline char ***
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_GL_WARN_ON_USE (rpl_environ, "environ is unportable - "
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"use gnulib module environ for portability");
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# define environ (*rpl_environ ())
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#if @GNULIB_EUIDACCESS@
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/* Like access(), except that it uses the effective user id and group id of
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the current process. */
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# if !@HAVE_EUIDACCESS@
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_GL_FUNCDECL_SYS (euidaccess, int, (const char *filename, int mode)
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_GL_ARG_NONNULL ((1)));
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_GL_CXXALIAS_SYS (euidaccess, int, (const char *filename, int mode));
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_GL_CXXALIASWARN (euidaccess);
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# if defined GNULIB_POSIXCHECK
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/* Like access(), this function is a security risk. */
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_GL_WARN_ON_USE (euidaccess, "the euidaccess function is a security risk - "
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"use the gnulib module faccessat instead");
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#elif defined GNULIB_POSIXCHECK
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# if HAVE_RAW_DECL_EUIDACCESS
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_GL_WARN_ON_USE (euidaccess, "euidaccess is unportable - "
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"use gnulib module euidaccess for portability");
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#if @GNULIB_FACCESSAT@
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# if !@HAVE_FACCESSAT@
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_GL_FUNCDECL_SYS (faccessat, int,
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(int fd, char const *file, int mode, int flag)
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_GL_ARG_NONNULL ((2)));
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_GL_CXXALIAS_SYS (faccessat, int,
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(int fd, char const *file, int mode, int flag));
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_GL_CXXALIASWARN (faccessat);
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#elif defined GNULIB_POSIXCHECK
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# if HAVE_RAW_DECL_FACCESSAT
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_GL_WARN_ON_USE (faccessat, "faccessat is not portable - "
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"use gnulib module faccessat for portability");
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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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_GL_FUNCDECL_SYS (fchdir, int, (int /*fd*/));
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/* Gnulib internal hooks needed to maintain the fchdir metadata. */
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_GL_EXTERN_C int _gl_register_fd (int fd, const char *filename)
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_GL_ARG_NONNULL ((2));
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_GL_EXTERN_C void _gl_unregister_fd (int fd);
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_GL_EXTERN_C int _gl_register_dup (int oldfd, int newfd);
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_GL_EXTERN_C const char *_gl_directory_name (int fd);
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_GL_CXXALIAS_SYS (fchdir, int, (int /*fd*/));
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_GL_CXXALIASWARN (fchdir);
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#elif defined GNULIB_POSIXCHECK
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# if HAVE_RAW_DECL_FCHDIR
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_GL_WARN_ON_USE (fchdir, "fchdir is unportable - "
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"use gnulib module fchdir for portability");
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#if @GNULIB_FCHOWNAT@
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# if @REPLACE_FCHOWNAT@
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# define fchownat rpl_fchownat
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_GL_FUNCDECL_RPL (fchownat, int, (int fd, char const *file,
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uid_t owner, gid_t group, int flag)
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_GL_ARG_NONNULL ((2)));
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_GL_CXXALIAS_RPL (fchownat, int, (int fd, char const *file,
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uid_t owner, gid_t group, int flag));
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# if !@HAVE_FCHOWNAT@
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_GL_FUNCDECL_SYS (fchownat, int, (int fd, char const *file,
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uid_t owner, gid_t group, int flag)
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_GL_ARG_NONNULL ((2)));
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_GL_CXXALIAS_SYS (fchownat, int, (int fd, char const *file,
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uid_t owner, gid_t group, int flag));
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_GL_CXXALIASWARN (fchownat);
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#elif defined GNULIB_POSIXCHECK
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# if HAVE_RAW_DECL_FCHOWNAT
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_GL_WARN_ON_USE (fchownat, "fchownat is not portable - "
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"use gnulib module openat for portability");
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/* Synchronize changes to a file.
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Return 0 if successful, otherwise -1 and errno set.
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See POSIX:2001 specification
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<http://www.opengroup.org/susv3xsh/fsync.html>. */
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_GL_FUNCDECL_SYS (fsync, int, (int fd));
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_GL_CXXALIAS_SYS (fsync, int, (int fd));
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_GL_CXXALIASWARN (fsync);
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#elif defined GNULIB_POSIXCHECK
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# if HAVE_RAW_DECL_FSYNC
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_GL_WARN_ON_USE (fsync, "fsync is unportable - "
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"use gnulib module fsync for portability");
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#if @GNULIB_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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# if !@HAVE_FTRUNCATE@
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_GL_FUNCDECL_SYS (ftruncate, int, (int fd, off_t length));
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_GL_CXXALIAS_SYS (ftruncate, int, (int fd, off_t length));
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_GL_CXXALIASWARN (ftruncate);
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#elif defined GNULIB_POSIXCHECK
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# if HAVE_RAW_DECL_FTRUNCATE
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_GL_WARN_ON_USE (ftruncate, "ftruncate is unportable - "
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"use gnulib module ftruncate for portability");
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/* Get the name of the current working directory, and put it in SIZE bytes
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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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# if @REPLACE_GETCWD@
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# define getcwd rpl_getcwd
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_GL_FUNCDECL_RPL (getcwd, char *, (char *buf, size_t size));
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_GL_CXXALIAS_RPL (getcwd, char *, (char *buf, size_t size));
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/* Need to cast, because on mingw, the second parameter is
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_GL_CXXALIAS_SYS_CAST (getcwd, char *, (char *buf, size_t size));
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_GL_CXXALIASWARN (getcwd);
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#elif defined GNULIB_POSIXCHECK
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# if HAVE_RAW_DECL_GETCWD
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_GL_WARN_ON_USE (getcwd, "getcwd is unportable - "
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"use gnulib module getcwd for portability");
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#if @GNULIB_GETDOMAINNAME@
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/* Return the NIS domain name of the machine.
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WARNING! The NIS domain name is unrelated to the fully qualified host name
543
of the machine. It is also unrelated to email addresses.
544
WARNING! The NIS domain name is usually the empty string or "(none)" when
547
Put up to LEN bytes of the NIS domain name into NAME.
548
Null terminate it if the name is shorter than LEN.
549
If the NIS domain name is longer than LEN, set errno = EINVAL and return -1.
550
Return 0 if successful, otherwise set errno and return -1. */
551
# if !@HAVE_GETDOMAINNAME@
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_GL_FUNCDECL_SYS (getdomainname, int, (char *name, size_t len)
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_GL_ARG_NONNULL ((1)));
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/* Need to cast, because on MacOS X 10.5 systems, the second parameter is
557
_GL_CXXALIAS_SYS_CAST (getdomainname, int, (char *name, size_t len));
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_GL_CXXALIASWARN (getdomainname);
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#elif defined GNULIB_POSIXCHECK
560
# undef getdomainname
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# if HAVE_RAW_DECL_GETDOMAINNAME
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_GL_WARN_ON_USE (getdomainname, "getdomainname is unportable - "
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"use gnulib module getdomainname for portability");
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#if @GNULIB_GETDTABLESIZE@
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/* Return the maximum number of file descriptors in the current process.
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In POSIX, this is same as sysconf (_SC_OPEN_MAX). */
571
# if !@HAVE_GETDTABLESIZE@
572
_GL_FUNCDECL_SYS (getdtablesize, int, (void));
574
_GL_CXXALIAS_SYS (getdtablesize, int, (void));
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_GL_CXXALIASWARN (getdtablesize);
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#elif defined GNULIB_POSIXCHECK
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# undef getdtablesize
578
# if HAVE_RAW_DECL_GETDTABLESIZE
579
_GL_WARN_ON_USE (getdtablesize, "getdtablesize is unportable - "
580
"use gnulib module getdtablesize for portability");
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#if @GNULIB_GETGROUPS@
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/* Return the supplemental groups that the current process belongs to.
587
It is unspecified whether the effective group id is in the list.
588
If N is 0, return the group count; otherwise, N describes how many
589
entries are available in GROUPS. Return -1 and set errno if N is
590
not 0 and not large enough. Fails with ENOSYS on some systems. */
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# if @REPLACE_GETGROUPS@
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# define getgroups rpl_getgroups
596
_GL_FUNCDECL_RPL (getgroups, int, (int n, gid_t *groups));
597
_GL_CXXALIAS_RPL (getgroups, int, (int n, gid_t *groups));
599
# if !@HAVE_GETGROUPS@
600
_GL_FUNCDECL_SYS (getgroups, int, (int n, gid_t *groups));
602
_GL_CXXALIAS_SYS (getgroups, int, (int n, gid_t *groups));
604
_GL_CXXALIASWARN (getgroups);
605
#elif defined GNULIB_POSIXCHECK
607
# if HAVE_RAW_DECL_GETGROUPS
608
_GL_WARN_ON_USE (getgroups, "getgroups is unportable - "
609
"use gnulib module getgroups for portability");
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#if @GNULIB_GETHOSTNAME@
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/* Return the standard host name of the machine.
616
WARNING! The host name may or may not be fully qualified.
618
Put up to LEN bytes of the host name into NAME.
619
Null terminate it if the name is shorter than LEN.
620
If the host name is longer than LEN, set errno = EINVAL and return -1.
621
Return 0 if successful, otherwise set errno and return -1. */
622
# if @UNISTD_H_HAVE_WINSOCK2_H@
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# define gethostname rpl_gethostname
627
_GL_FUNCDECL_RPL (gethostname, int, (char *name, size_t len)
628
_GL_ARG_NONNULL ((1)));
629
_GL_CXXALIAS_RPL (gethostname, int, (char *name, size_t len));
631
# if !@HAVE_GETHOSTNAME@
632
_GL_FUNCDECL_SYS (gethostname, int, (char *name, size_t len)
633
_GL_ARG_NONNULL ((1)));
635
/* Need to cast, because on Solaris 10 systems, the second parameter is
637
_GL_CXXALIAS_SYS_CAST (gethostname, int, (char *name, size_t len));
639
_GL_CXXALIASWARN (gethostname);
640
#elif @UNISTD_H_HAVE_WINSOCK2_H@
642
# define gethostname gethostname_used_without_requesting_gnulib_module_gethostname
643
#elif defined GNULIB_POSIXCHECK
645
# if HAVE_RAW_DECL_GETHOSTNAME
646
_GL_WARN_ON_USE (gethostname, "gethostname is unportable - "
647
"use gnulib module gethostname for portability");
652
#if @GNULIB_GETLOGIN@
653
/* Returns the user's login name, or NULL if it cannot be found. Upon error,
654
returns NULL with errno set.
656
See <http://www.opengroup.org/susv3xsh/getlogin.html>.
658
Most programs don't need to use this function, because the information is
659
available through environment variables:
660
${LOGNAME-$USER} on Unix platforms,
661
$USERNAME on native Windows platforms.
663
# if !@HAVE_GETLOGIN@
664
_GL_FUNCDECL_SYS (getlogin, char *, (void));
666
_GL_CXXALIAS_SYS (getlogin, char *, (void));
667
_GL_CXXALIASWARN (getlogin);
668
#elif defined GNULIB_POSIXCHECK
670
# if HAVE_RAW_DECL_GETLOGIN
671
_GL_WARN_ON_USE (getlogin, "getlogin is unportable - "
672
"use gnulib module getlogin for portability");
677
#if @GNULIB_GETLOGIN_R@
678
/* Copies the user's login name to NAME.
679
The array pointed to by NAME has room for SIZE bytes.
681
Returns 0 if successful. Upon error, an error number is returned, or -1 in
682
the case that the login name cannot be found but no specific error is
683
provided (this case is hopefully rare but is left open by the POSIX spec).
685
See <http://www.opengroup.org/susv3xsh/getlogin.html>.
687
Most programs don't need to use this function, because the information is
688
available through environment variables:
689
${LOGNAME-$USER} on Unix platforms,
690
$USERNAME on native Windows platforms.
692
# if !@HAVE_DECL_GETLOGIN_R@
693
_GL_FUNCDECL_SYS (getlogin_r, int, (char *name, size_t size)
694
_GL_ARG_NONNULL ((1)));
696
/* Need to cast, because on Solaris 10 systems, the second argument is
698
_GL_CXXALIAS_SYS_CAST (getlogin_r, int, (char *name, size_t size));
699
_GL_CXXALIASWARN (getlogin_r);
700
#elif defined GNULIB_POSIXCHECK
702
# if HAVE_RAW_DECL_GETLOGIN_R
703
_GL_WARN_ON_USE (getlogin_r, "getlogin_r is unportable - "
704
"use gnulib module getlogin_r for portability");
709
#if @GNULIB_GETPAGESIZE@
710
# if @REPLACE_GETPAGESIZE@
711
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
712
# define getpagesize rpl_getpagesize
714
_GL_FUNCDECL_RPL (getpagesize, int, (void));
715
_GL_CXXALIAS_RPL (getpagesize, int, (void));
717
# if !@HAVE_GETPAGESIZE@
718
# if !defined getpagesize
719
/* This is for POSIX systems. */
720
# if !defined _gl_getpagesize && defined _SC_PAGESIZE
721
# if ! (defined __VMS && __VMS_VER < 70000000)
722
# define _gl_getpagesize() sysconf (_SC_PAGESIZE)
725
/* This is for older VMS. */
726
# if !defined _gl_getpagesize && defined __VMS
728
# define _gl_getpagesize() 8192
730
# define _gl_getpagesize() 512
733
/* This is for BeOS. */
734
# if !defined _gl_getpagesize && @HAVE_OS_H@
736
# if defined B_PAGE_SIZE
737
# define _gl_getpagesize() B_PAGE_SIZE
740
/* This is for AmigaOS4.0. */
741
# if !defined _gl_getpagesize && defined __amigaos4__
742
# define _gl_getpagesize() 2048
744
/* This is for older Unix systems. */
745
# if !defined _gl_getpagesize && @HAVE_SYS_PARAM_H@
746
# include <sys/param.h>
747
# ifdef EXEC_PAGESIZE
748
# define _gl_getpagesize() EXEC_PAGESIZE
754
# define _gl_getpagesize() (NBPG * CLSIZE)
757
# define _gl_getpagesize() NBPC
762
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
763
# define getpagesize() _gl_getpagesize ()
768
return _gl_getpagesize ();
773
/* Need to cast, because on Cygwin 1.5.x systems, the return type is size_t. */
774
_GL_CXXALIAS_SYS_CAST (getpagesize, int, (void));
776
# if @HAVE_DECL_GETPAGESIZE@
777
_GL_CXXALIASWARN (getpagesize);
779
#elif defined GNULIB_POSIXCHECK
781
# if HAVE_RAW_DECL_GETPAGESIZE
782
_GL_WARN_ON_USE (getpagesize, "getpagesize is unportable - "
783
"use gnulib module getpagesize for portability");
788
#if @GNULIB_GETUSERSHELL@
789
/* Return the next valid login shell on the system, or NULL when the end of
790
the list has been reached. */
791
# if !@HAVE_DECL_GETUSERSHELL@
792
_GL_FUNCDECL_SYS (getusershell, char *, (void));
794
_GL_CXXALIAS_SYS (getusershell, char *, (void));
795
_GL_CXXALIASWARN (getusershell);
796
#elif defined GNULIB_POSIXCHECK
798
# if HAVE_RAW_DECL_GETUSERSHELL
799
_GL_WARN_ON_USE (getusershell, "getusershell is unportable - "
800
"use gnulib module getusershell for portability");
804
#if @GNULIB_GETUSERSHELL@
805
/* Rewind to pointer that is advanced at each getusershell() call. */
806
# if !@HAVE_DECL_GETUSERSHELL@
807
_GL_FUNCDECL_SYS (setusershell, void, (void));
809
_GL_CXXALIAS_SYS (setusershell, void, (void));
810
_GL_CXXALIASWARN (setusershell);
811
#elif defined GNULIB_POSIXCHECK
813
# if HAVE_RAW_DECL_SETUSERSHELL
814
_GL_WARN_ON_USE (setusershell, "setusershell is unportable - "
815
"use gnulib module getusershell for portability");
819
#if @GNULIB_GETUSERSHELL@
820
/* Free the pointer that is advanced at each getusershell() call and
821
associated resources. */
822
# if !@HAVE_DECL_GETUSERSHELL@
823
_GL_FUNCDECL_SYS (endusershell, void, (void));
825
_GL_CXXALIAS_SYS (endusershell, void, (void));
826
_GL_CXXALIASWARN (endusershell);
827
#elif defined GNULIB_POSIXCHECK
829
# if HAVE_RAW_DECL_ENDUSERSHELL
830
_GL_WARN_ON_USE (endusershell, "endusershell is unportable - "
831
"use gnulib module getusershell for portability");
837
/* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
838
to GID (if GID is not -1). Do not follow symbolic links.
839
Return 0 if successful, otherwise -1 and errno set.
840
See the POSIX:2001 specification
841
<http://www.opengroup.org/susv3xsh/lchown.html>. */
842
# if @REPLACE_LCHOWN@
843
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
845
# define lchown rpl_lchown
847
_GL_FUNCDECL_RPL (lchown, int, (char const *file, uid_t owner, gid_t group)
848
_GL_ARG_NONNULL ((1)));
849
_GL_CXXALIAS_RPL (lchown, int, (char const *file, uid_t owner, gid_t group));
852
_GL_FUNCDECL_SYS (lchown, int, (char const *file, uid_t owner, gid_t group)
853
_GL_ARG_NONNULL ((1)));
855
_GL_CXXALIAS_SYS (lchown, int, (char const *file, uid_t owner, gid_t group));
857
_GL_CXXALIASWARN (lchown);
858
#elif defined GNULIB_POSIXCHECK
860
# if HAVE_RAW_DECL_LCHOWN
861
_GL_WARN_ON_USE (lchown, "lchown is unportable to pre-POSIX.1-2001 systems - "
862
"use gnulib module lchown for portability");
868
/* Create a new hard link for an existing file.
869
Return 0 if successful, otherwise -1 and errno set.
870
See POSIX:2001 specification
871
<http://www.opengroup.org/susv3xsh/link.html>. */
873
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
874
# define link rpl_link
876
_GL_FUNCDECL_RPL (link, int, (const char *path1, const char *path2)
877
_GL_ARG_NONNULL ((1, 2)));
878
_GL_CXXALIAS_RPL (link, int, (const char *path1, const char *path2));
881
_GL_FUNCDECL_SYS (link, int, (const char *path1, const char *path2)
882
_GL_ARG_NONNULL ((1, 2)));
884
_GL_CXXALIAS_SYS (link, int, (const char *path1, const char *path2));
886
_GL_CXXALIASWARN (link);
887
#elif defined GNULIB_POSIXCHECK
889
# if HAVE_RAW_DECL_LINK
890
_GL_WARN_ON_USE (link, "link is unportable - "
891
"use gnulib module link for portability");
897
/* Create a new hard link for an existing file, relative to two
898
directories. FLAG controls whether symlinks are followed.
899
Return 0 if successful, otherwise -1 and errno set. */
900
# if @REPLACE_LINKAT@
901
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
903
# define linkat rpl_linkat
905
_GL_FUNCDECL_RPL (linkat, int,
906
(int fd1, const char *path1, int fd2, const char *path2,
908
_GL_ARG_NONNULL ((2, 4)));
909
_GL_CXXALIAS_RPL (linkat, int,
910
(int fd1, const char *path1, int fd2, const char *path2,
914
_GL_FUNCDECL_SYS (linkat, int,
915
(int fd1, const char *path1, int fd2, const char *path2,
917
_GL_ARG_NONNULL ((2, 4)));
919
_GL_CXXALIAS_SYS (linkat, int,
920
(int fd1, const char *path1, int fd2, const char *path2,
923
_GL_CXXALIASWARN (linkat);
924
#elif defined GNULIB_POSIXCHECK
926
# if HAVE_RAW_DECL_LINKAT
927
_GL_WARN_ON_USE (linkat, "linkat is unportable - "
928
"use gnulib module linkat for portability");
934
/* Set the offset of FD relative to SEEK_SET, SEEK_CUR, or SEEK_END.
935
Return the new offset if successful, otherwise -1 and errno set.
936
See the POSIX:2001 specification
937
<http://www.opengroup.org/susv3xsh/lseek.html>. */
939
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
940
# define lseek rpl_lseek
942
_GL_FUNCDECL_RPL (lseek, off_t, (int fd, off_t offset, int whence));
943
_GL_CXXALIAS_RPL (lseek, off_t, (int fd, off_t offset, int whence));
945
_GL_CXXALIAS_SYS (lseek, off_t, (int fd, off_t offset, int whence));
947
_GL_CXXALIASWARN (lseek);
948
#elif defined GNULIB_POSIXCHECK
950
# if HAVE_RAW_DECL_LSEEK
951
_GL_WARN_ON_USE (lseek, "lseek does not fail with ESPIPE on pipes on some "
952
"systems - use gnulib module lseek for portability");
958
/* Create a pipe, applying the given flags when opening the read-end of the
959
pipe and the write-end of the pipe.
960
The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
961
and O_TEXT, O_BINARY (defined in "binary-io.h").
962
Store the read-end as fd[0] and the write-end as fd[1].
963
Return 0 upon success, or -1 with errno set upon failure.
964
See also the Linux man page at
965
<http://www.kernel.org/doc/man-pages/online/pages/man2/pipe2.2.html>. */
967
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
968
# define pipe2 rpl_pipe2
970
_GL_FUNCDECL_RPL (pipe2, int, (int fd[2], int flags) _GL_ARG_NONNULL ((1)));
971
_GL_CXXALIAS_RPL (pipe2, int, (int fd[2], int flags));
973
_GL_FUNCDECL_SYS (pipe2, int, (int fd[2], int flags) _GL_ARG_NONNULL ((1)));
974
_GL_CXXALIAS_SYS (pipe2, int, (int fd[2], int flags));
976
_GL_CXXALIASWARN (pipe2);
977
#elif defined GNULIB_POSIXCHECK
979
# if HAVE_RAW_DECL_PIPE2
980
_GL_WARN_ON_USE (pipe2, "pipe2 is unportable - "
981
"use gnulib module pipe2 for portability");
987
/* Read at most BUFSIZE bytes from FD into BUF, starting at OFFSET.
988
Return the number of bytes placed into BUF if successful, otherwise
989
set errno and return -1. 0 indicates EOF. See the POSIX:2001
990
specification <http://www.opengroup.org/susv3xsh/pread.html>. */
992
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
993
# define pread rpl_pread
995
_GL_FUNCDECL_RPL (pread, ssize_t,
996
(int fd, void *buf, size_t bufsize, off_t offset)
997
_GL_ARG_NONNULL ((2)));
998
_GL_CXXALIAS_RPL (pread, ssize_t,
999
(int fd, void *buf, size_t bufsize, off_t offset));
1002
_GL_FUNCDECL_SYS (pread, ssize_t,
1003
(int fd, void *buf, size_t bufsize, off_t offset)
1004
_GL_ARG_NONNULL ((2)));
1006
_GL_CXXALIAS_SYS (pread, ssize_t,
1007
(int fd, void *buf, size_t bufsize, off_t offset));
1009
_GL_CXXALIASWARN (pread);
1010
#elif defined GNULIB_POSIXCHECK
1012
# if HAVE_RAW_DECL_PREAD
1013
_GL_WARN_ON_USE (pread, "pread is unportable - "
1014
"use gnulib module pread for portability");
1020
/* Write at most BUFSIZE bytes from BUF into FD, starting at OFFSET.
1021
Return the number of bytes written if successful, otherwise
1022
set errno and return -1. 0 indicates nothing written. See the
1023
POSIX:2001 specification
1024
<http://www.opengroup.org/susv3xsh/pwrite.html>. */
1025
# if @REPLACE_PWRITE@
1026
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1027
# define pwrite rpl_pwrite
1029
_GL_FUNCDECL_RPL (pwrite, ssize_t,
1030
(int fd, const void *buf, size_t bufsize, off_t offset)
1031
_GL_ARG_NONNULL ((2)));
1032
_GL_CXXALIAS_RPL (pwrite, ssize_t,
1033
(int fd, const void *buf, size_t bufsize, off_t offset));
1036
_GL_FUNCDECL_SYS (pwrite, ssize_t,
1037
(int fd, const void *buf, size_t bufsize, off_t offset)
1038
_GL_ARG_NONNULL ((2)));
1040
_GL_CXXALIAS_SYS (pwrite, ssize_t,
1041
(int fd, const void *buf, size_t bufsize, off_t offset));
1043
_GL_CXXALIASWARN (pwrite);
1044
#elif defined GNULIB_POSIXCHECK
1046
# if HAVE_RAW_DECL_PWRITE
1047
_GL_WARN_ON_USE (pwrite, "pwrite is unportable - "
1048
"use gnulib module pwrite for portability");
1053
#if @GNULIB_READLINK@
1054
/* Read the contents of the symbolic link FILE and place the first BUFSIZE
1055
bytes of it into BUF. Return the number of bytes placed into BUF if
1056
successful, otherwise -1 and errno set.
1057
See the POSIX:2001 specification
1058
<http://www.opengroup.org/susv3xsh/readlink.html>. */
1059
# if @REPLACE_READLINK@
1060
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1061
# define readlink rpl_readlink
1063
_GL_FUNCDECL_RPL (readlink, ssize_t,
1064
(const char *file, char *buf, size_t bufsize)
1065
_GL_ARG_NONNULL ((1, 2)));
1066
_GL_CXXALIAS_RPL (readlink, ssize_t,
1067
(const char *file, char *buf, size_t bufsize));
1069
# if !@HAVE_READLINK@
1070
_GL_FUNCDECL_SYS (readlink, ssize_t,
1071
(const char *file, char *buf, size_t bufsize)
1072
_GL_ARG_NONNULL ((1, 2)));
1074
_GL_CXXALIAS_SYS (readlink, ssize_t,
1075
(const char *file, char *buf, size_t bufsize));
1077
_GL_CXXALIASWARN (readlink);
1078
#elif defined GNULIB_POSIXCHECK
1080
# if HAVE_RAW_DECL_READLINK
1081
_GL_WARN_ON_USE (readlink, "readlink is unportable - "
1082
"use gnulib module readlink for portability");
1087
#if @GNULIB_READLINKAT@
1088
# if !@HAVE_READLINKAT@
1089
_GL_FUNCDECL_SYS (readlinkat, ssize_t,
1090
(int fd, char const *file, char *buf, size_t len)
1091
_GL_ARG_NONNULL ((2, 3)));
1093
_GL_CXXALIAS_SYS (readlinkat, ssize_t,
1094
(int fd, char const *file, char *buf, size_t len));
1095
_GL_CXXALIASWARN (readlinkat);
1096
#elif defined GNULIB_POSIXCHECK
1098
# if HAVE_RAW_DECL_READLINKAT
1099
_GL_WARN_ON_USE (readlinkat, "readlinkat is not portable - "
1100
"use gnulib module readlinkat for portability");
1106
/* Remove the directory DIR. */
1107
# if @REPLACE_RMDIR@
1108
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1109
# define rmdir rpl_rmdir
1111
_GL_FUNCDECL_RPL (rmdir, int, (char const *name) _GL_ARG_NONNULL ((1)));
1112
_GL_CXXALIAS_RPL (rmdir, int, (char const *name));
1114
_GL_CXXALIAS_SYS (rmdir, int, (char const *name));
1116
_GL_CXXALIASWARN (rmdir);
1117
#elif defined GNULIB_POSIXCHECK
1119
# if HAVE_RAW_DECL_RMDIR
1120
_GL_WARN_ON_USE (rmdir, "rmdir is unportable - "
1121
"use gnulib module rmdir for portability");
1127
/* Pause the execution of the current thread for N seconds.
1128
Returns the number of seconds left to sleep.
1129
See the POSIX:2001 specification
1130
<http://www.opengroup.org/susv3xsh/sleep.html>. */
1131
# if @REPLACE_SLEEP@
1132
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1134
# define sleep rpl_sleep
1136
_GL_FUNCDECL_RPL (sleep, unsigned int, (unsigned int n));
1137
_GL_CXXALIAS_RPL (sleep, unsigned int, (unsigned int n));
1140
_GL_FUNCDECL_SYS (sleep, unsigned int, (unsigned int n));
1142
_GL_CXXALIAS_SYS (sleep, unsigned int, (unsigned int n));
1144
_GL_CXXALIASWARN (sleep);
1145
#elif defined GNULIB_POSIXCHECK
1147
# if HAVE_RAW_DECL_SLEEP
1148
_GL_WARN_ON_USE (sleep, "sleep is unportable - "
1149
"use gnulib module sleep for portability");
1154
#if @GNULIB_SYMLINK@
1155
# if @REPLACE_SYMLINK@
1156
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1158
# define symlink rpl_symlink
1160
_GL_FUNCDECL_RPL (symlink, int, (char const *contents, char const *file)
1161
_GL_ARG_NONNULL ((1, 2)));
1162
_GL_CXXALIAS_RPL (symlink, int, (char const *contents, char const *file));
1164
# if !@HAVE_SYMLINK@
1165
_GL_FUNCDECL_SYS (symlink, int, (char const *contents, char const *file)
1166
_GL_ARG_NONNULL ((1, 2)));
1168
_GL_CXXALIAS_SYS (symlink, int, (char const *contents, char const *file));
1170
_GL_CXXALIASWARN (symlink);
1171
#elif defined GNULIB_POSIXCHECK
1173
# if HAVE_RAW_DECL_SYMLINK
1174
_GL_WARN_ON_USE (symlink, "symlink is not portable - "
1175
"use gnulib module symlink for portability");
1180
#if @GNULIB_SYMLINKAT@
1181
# if !@HAVE_SYMLINKAT@
1182
_GL_FUNCDECL_SYS (symlinkat, int,
1183
(char const *contents, int fd, char const *file)
1184
_GL_ARG_NONNULL ((1, 3)));
1186
_GL_CXXALIAS_SYS (symlinkat, int,
1187
(char const *contents, int fd, char const *file));
1188
_GL_CXXALIASWARN (symlinkat);
1189
#elif defined GNULIB_POSIXCHECK
1191
# if HAVE_RAW_DECL_SYMLINKAT
1192
_GL_WARN_ON_USE (symlinkat, "symlinkat is not portable - "
1193
"use gnulib module symlinkat for portability");
1198
#if @GNULIB_TTYNAME_R@
1199
/* Store at most BUFLEN characters of the pathname of the terminal FD is
1200
open on in BUF. Return 0 on success, otherwise an error number. */
1201
# if @REPLACE_TTYNAME_R@
1202
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1204
# define ttyname_r rpl_ttyname_r
1206
_GL_FUNCDECL_RPL (ttyname_r, int,
1207
(int fd, char *buf, size_t buflen) _GL_ARG_NONNULL ((2)));
1208
_GL_CXXALIAS_RPL (ttyname_r, int,
1209
(int fd, char *buf, size_t buflen));
1211
# if !@HAVE_TTYNAME_R@
1212
_GL_FUNCDECL_SYS (ttyname_r, int,
1213
(int fd, char *buf, size_t buflen) _GL_ARG_NONNULL ((2)));
1215
_GL_CXXALIAS_SYS (ttyname_r, int,
1216
(int fd, char *buf, size_t buflen));
1218
_GL_CXXALIASWARN (ttyname_r);
1219
#elif defined GNULIB_POSIXCHECK
1221
# if HAVE_RAW_DECL_TTYNAME_R
1222
_GL_WARN_ON_USE (ttyname_r, "ttyname_r is not portable - "
1223
"use gnulib module ttyname_r for portability");
1229
# if @REPLACE_UNLINK@
1230
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1232
# define unlink rpl_unlink
1234
_GL_FUNCDECL_RPL (unlink, int, (char const *file) _GL_ARG_NONNULL ((1)));
1235
_GL_CXXALIAS_RPL (unlink, int, (char const *file));
1237
_GL_CXXALIAS_SYS (unlink, int, (char const *file));
1239
_GL_CXXALIASWARN (unlink);
1240
#elif defined GNULIB_POSIXCHECK
1242
# if HAVE_RAW_DECL_UNLINK
1243
_GL_WARN_ON_USE (unlink, "unlink is not portable - "
1244
"use gnulib module unlink for portability");
1249
#if @GNULIB_UNLINKAT@
1250
# if @REPLACE_UNLINKAT@
1251
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1253
# define unlinkat rpl_unlinkat
1255
_GL_FUNCDECL_RPL (unlinkat, int, (int fd, char const *file, int flag)
1256
_GL_ARG_NONNULL ((2)));
1257
_GL_CXXALIAS_RPL (unlinkat, int, (int fd, char const *file, int flag));
1259
# if !@HAVE_UNLINKAT@
1260
_GL_FUNCDECL_SYS (unlinkat, int, (int fd, char const *file, int flag)
1261
_GL_ARG_NONNULL ((2)));
1263
_GL_CXXALIAS_SYS (unlinkat, int, (int fd, char const *file, int flag));
1265
_GL_CXXALIASWARN (unlinkat);
1266
#elif defined GNULIB_POSIXCHECK
1268
# if HAVE_RAW_DECL_UNLINKAT
1269
_GL_WARN_ON_USE (unlinkat, "unlinkat is not portable - "
1270
"use gnulib module openat for portability");
1276
/* Pause the execution of the current thread for N microseconds.
1277
Returns 0 on completion, or -1 on range error.
1278
See the POSIX:2001 specification
1279
<http://www.opengroup.org/susv3xsh/sleep.html>. */
1280
# if @REPLACE_USLEEP@
1281
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1283
# define usleep rpl_usleep
1285
_GL_FUNCDECL_RPL (usleep, int, (useconds_t n));
1286
_GL_CXXALIAS_RPL (usleep, int, (useconds_t n));
1289
_GL_FUNCDECL_SYS (usleep, int, (useconds_t n));
1291
_GL_CXXALIAS_SYS (usleep, int, (useconds_t n));
1293
_GL_CXXALIASWARN (usleep);
1294
#elif defined GNULIB_POSIXCHECK
1296
# if HAVE_RAW_DECL_USLEEP
1297
_GL_WARN_ON_USE (usleep, "usleep is unportable - "
1298
"use gnulib module usleep for portability");
1304
/* Write up to COUNT bytes starting at BUF to file descriptor FD.
1305
See the POSIX:2001 specification
1306
<http://www.opengroup.org/susv3xsh/write.html>. */
1307
# if @REPLACE_WRITE@ && @GNULIB_UNISTD_H_SIGPIPE@
1308
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1310
# define write rpl_write
1312
_GL_FUNCDECL_RPL (write, ssize_t, (int fd, const void *buf, size_t count)
1313
_GL_ARG_NONNULL ((2)));
1314
_GL_CXXALIAS_RPL (write, ssize_t, (int fd, const void *buf, size_t count));
1316
/* Need to cast, because on mingw, the third parameter is
1318
and the return type is 'int'. */
1319
_GL_CXXALIAS_SYS_CAST (write, ssize_t, (int fd, const void *buf, size_t count));
1321
_GL_CXXALIASWARN (write);
1325
#endif /* _GL_UNISTD_H */
1326
#endif /* _GL_UNISTD_H */
added
removed
grub-core/gnulib/unistd.in.h
