/* Substitute for and wrapper around <unistd.h>.
- Copyright (C) 2003-2009 Free Software Foundation, Inc.
+ Copyright (C) 2003-2010 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)
+ 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,
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
+/* Special invocation convention:
+ - On mingw, several headers, including <winsock2.h>, include <unistd.h>,
+ but we need to ensure that both the system <unistd.h> and <winsock2.h>
+ are completely included before we replace gethostname. */
+#if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@ \
+ && !defined _GL_WINSOCK2_H_WITNESS && defined _WINSOCK2_H
+/* <unistd.h> is being indirectly included for the first time from
+ <winsock2.h>; avoid declaring any overrides. */
+# if @HAVE_UNISTD_H@
+# @INCLUDE_NEXT@ @NEXT_UNISTD_H@
+# else
+# error unexpected; report this to bug-gnulib@gnu.org
+# endif
+# define _GL_WINSOCK2_H_WITNESS
+
+/* Normal invocation. */
+#elif !defined _GL_UNISTD_H
+
/* The include_next requires a split double-inclusion guard. */
#if @HAVE_UNISTD_H@
# @INCLUDE_NEXT@ @NEXT_UNISTD_H@
#endif
-#ifndef _GL_UNISTD_H
+/* Get all possible declarations of gethostname(). */
+#if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@ \
+ && !defined _GL_INCLUDING_WINSOCK2_H
+# define _GL_INCLUDING_WINSOCK2_H
+# include <winsock2.h>
+# undef _GL_INCLUDING_WINSOCK2_H
+#endif
+
+#if !defined _GL_UNISTD_H && !defined _GL_INCLUDING_WINSOCK2_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)
+/* Cygwin 1.7.1 declares symlinkat in <stdio.h>, not in <unistd.h>. */
+/* But avoid namespace pollution on glibc systems. */
+#if (!(defined SEEK_CUR && defined SEEK_END && defined SEEK_SET) \
+ || (@GNULIB_SYMLINKAT@ || defined GNULIB_POSIXCHECK)) \
+ && ! defined __GLIBC__
# include <stdio.h>
#endif
+/* Cygwin 1.7.1 declares unlinkat in <fcntl.h>, not in <unistd.h>. */
+/* But avoid namespace pollution on glibc systems. */
+#if (@GNULIB_UNLINKAT@ || defined GNULIB_POSIXCHECK) && ! defined __GLIBC__
+# include <fcntl.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>
+/* Solaris declares getcwd not only in <unistd.h> but also in <stdlib.h>. */
+/* But avoid namespace pollution on glibc systems. */
+#ifndef __GLIBC__
+# include <stdlib.h>
+#endif
+
+/* mingw declares getcwd in <io.h>, not in <unistd.h>. */
+#if ((@GNULIB_GETCWD@ || defined GNULIB_POSIXCHECK) \
+ && ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__))
+# include <io.h>
+#endif
-#if @GNULIB_WRITE@ && @REPLACE_WRITE@ && @GNULIB_UNISTD_H_SIGPIPE@
+#if (@GNULIB_WRITE@ || @GNULIB_READLINK@ || @GNULIB_READLINKAT@ \
+ || @GNULIB_PREAD@ || @GNULIB_PWRITE@ || defined GNULIB_POSIXCHECK)
/* Get ssize_t. */
# include <sys/types.h>
#endif
+/* Get getopt(), optarg, optind, opterr, optopt.
+ But avoid namespace pollution on glibc systems. */
+#if @GNULIB_UNISTD_H_GETOPT@ && !defined __GLIBC__ && !defined _GL_SYSTEM_GETOPT
+# include <getopt.h>
+#endif
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
+
+/* The definition of _GL_ARG_NONNULL is copied here. */
+
+/* The definition of _GL_WARN_ON_USE is copied here. */
+
+
#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
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# 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
+# else
+ _GL_WARN_ON_USE (socket,
+ "socket() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (connect,
+ "connect() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (accept,
+ "accept() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (bind,
+ "bind() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (getpeername,
+ "getpeername() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (getsockname,
+ "getsockname() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (getsockopt,
+ "getsockopt() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (listen,
+ "listen() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (recv,
+ "recv() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (send,
+ "send() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (recvfrom,
+ "recvfrom() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (sendto,
+ "sendto() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (setsockopt,
+ "setsockopt() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (shutdown,
+ "shutdown() used without including <sys/socket.h>");
+# endif
# endif
# if !defined _GL_SYS_SELECT_H
-# undef select
-# define select select_used_without_including_sys_select_h
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef select
+# define select select_used_without_including_sys_select_h
+# else
+ _GL_WARN_ON_USE (select,
+ "select() used without including <sys/select.h>");
+# endif
# endif
# endif
#endif
-/* The definition of GL_LINK_WARNING is copied here. */
-
/* OS/2 EMX lacks these macros. */
#ifndef STDIN_FILENO
# define STDERR_FILENO 2
#endif
+/* Ensure *_OK macros exist. */
+#ifndef F_OK
+# define F_OK 0
+# define X_OK 1
+# define W_OK 2
+# define R_OK 4
+#endif
+
+
/* Declare overridden functions. */
-#ifdef __cplusplus
-extern "C" {
+
+#if defined GNULIB_POSIXCHECK
+/* The access() function is a security risk. */
+_GL_WARN_ON_USE (access, "the access function is a security risk - "
+ "use the gnulib module faccessat instead");
#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>. */
+# if @REPLACE_CHOWN@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef chown
# define chown rpl_chown
-extern int chown (const char *file, uid_t uid, gid_t gid);
# endif
+_GL_FUNCDECL_RPL (chown, int, (const char *file, uid_t uid, gid_t gid)
+ _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (chown, int, (const char *file, uid_t uid, gid_t gid));
+# else
+# if !@HAVE_CHOWN@
+_GL_FUNCDECL_SYS (chown, int, (const char *file, uid_t uid, gid_t gid)
+ _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (chown, int, (const char *file, uid_t uid, gid_t gid));
# endif
+_GL_CXXALIASWARN (chown);
#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))
+# if HAVE_RAW_DECL_CHOWN
+_GL_WARN_ON_USE (chown, "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");
+# endif
#endif
#if @GNULIB_CLOSE@
-# if @UNISTD_H_HAVE_WINSOCK2_H@
-/* Need a gnulib internal function. */
-# define HAVE__GL_CLOSE_FD_MAYBE_SOCKET 1
-# endif
# if @REPLACE_CLOSE@
/* Automatically included by modules that need a replacement for close. */
-# undef close
-# define close rpl_close
-extern int close (int);
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef close
+# define close rpl_close
+# endif
+_GL_FUNCDECL_RPL (close, int, (int fd));
+_GL_CXXALIAS_RPL (close, int, (int fd));
+# else
+_GL_CXXALIAS_SYS (close, int, (int fd));
# endif
-#elif @UNISTD_H_HAVE_WINSOCK2_H@
+_GL_CXXALIASWARN (close);
+#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))
+/* Assume close is always declared. */
+_GL_WARN_ON_USE (close, "close does not portably work on sockets - "
+ "use gnulib module close for portability");
#endif
+#if @REPLACE_DUP@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define dup rpl_dup
+# endif
+_GL_FUNCDECL_RPL (dup, int, (int oldfd));
+_GL_CXXALIAS_RPL (dup, int, (int oldfd));
+#else
+_GL_CXXALIAS_SYS (dup, int, (int oldfd));
+#endif
+_GL_CXXALIASWARN (dup);
+
+
#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.
+ 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);
+# if @REPLACE_DUP2@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define dup2 rpl_dup2
+# endif
+_GL_FUNCDECL_RPL (dup2, int, (int oldfd, int newfd));
+_GL_CXXALIAS_RPL (dup2, int, (int oldfd, int newfd));
+# else
+# if !@HAVE_DUP2@
+_GL_FUNCDECL_SYS (dup2, int, (int oldfd, int newfd));
+# endif
+_GL_CXXALIAS_SYS (dup2, int, (int oldfd, int newfd));
# endif
+_GL_CXXALIASWARN (dup2);
#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))
+# if HAVE_RAW_DECL_DUP2
+_GL_WARN_ON_USE (dup2, "dup2 is unportable - "
+ "use gnulib module dup2 for portability");
+# endif
+#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@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define dup3 rpl_dup3
+# endif
+_GL_FUNCDECL_RPL (dup3, int, (int oldfd, int newfd, int flags));
+_GL_CXXALIAS_RPL (dup3, int, (int oldfd, int newfd, int flags));
+# else
+_GL_FUNCDECL_SYS (dup3, int, (int oldfd, int newfd, int flags));
+_GL_CXXALIAS_SYS (dup3, int, (int oldfd, int newfd, int flags));
+# endif
+_GL_CXXALIASWARN (dup3);
+#elif defined GNULIB_POSIXCHECK
+# undef dup3
+# if HAVE_RAW_DECL_DUP3
+_GL_WARN_ON_USE (dup3, "dup3 is unportable - "
+ "use gnulib module dup3 for portability");
+# endif
#endif
# include <crt_externs.h>
# define environ (*_NSGetEnviron ())
# else
+# ifdef __cplusplus
+extern "C" {
+# endif
extern char **environ;
+# ifdef __cplusplus
+}
+# endif
# endif
# endif
#elif defined GNULIB_POSIXCHECK
-# undef environ
-# define environ \
- (GL_LINK_WARNING ("environ is unportable - " \
- "use gnulib module environ for portability"), \
- environ)
+# if HAVE_RAW_DECL_ENVIRON
+static inline char ***
+rpl_environ (void)
+{
+ return &environ;
+}
+_GL_WARN_ON_USE (rpl_environ, "environ is unportable - "
+ "use gnulib module environ for portability");
+# undef environ
+# define environ (*rpl_environ ())
+# endif
#endif
#if @GNULIB_EUIDACCESS@
-# if !@HAVE_EUIDACCESS@
-/* Like access(), except that is uses the effective user id and group id of
+/* Like access(), except that it uses the effective user id and group id of
the current process. */
-extern int euidaccess (const char *filename, int mode);
+# if !@HAVE_EUIDACCESS@
+_GL_FUNCDECL_SYS (euidaccess, int, (const char *filename, int mode)
+ _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (euidaccess, int, (const char *filename, int mode));
+_GL_CXXALIASWARN (euidaccess);
+# if defined GNULIB_POSIXCHECK
+/* Like access(), this function is a security risk. */
+_GL_WARN_ON_USE (euidaccess, "the euidaccess function is a security risk - "
+ "use the gnulib module faccessat instead");
# 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))
+# if HAVE_RAW_DECL_EUIDACCESS
+_GL_WARN_ON_USE (euidaccess, "euidaccess is unportable - "
+ "use gnulib module euidaccess for portability");
+# endif
#endif
-#if @GNULIB_FCHDIR@
-# if @REPLACE_FCHDIR@
+#if @GNULIB_FACCESSAT@
+# if !@HAVE_FACCESSAT@
+_GL_FUNCDECL_SYS (faccessat, int,
+ (int fd, char const *file, int mode, int flag)
+ _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (faccessat, int,
+ (int fd, char const *file, int mode, int flag));
+_GL_CXXALIASWARN (faccessat);
+#elif defined GNULIB_POSIXCHECK
+# undef faccessat
+# if HAVE_RAW_DECL_FACCESSAT
+_GL_WARN_ON_USE (faccessat, "faccessat is not portable - "
+ "use gnulib module faccessat for portability");
+# endif
+#endif
+
+#if @GNULIB_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*/);
+# if ! @HAVE_FCHDIR@
+_GL_FUNCDECL_SYS (fchdir, int, (int /*fd*/));
-# define dup rpl_dup
-extern int dup (int);
-# define dup2 rpl_dup2
-extern int dup2 (int, int);
+/* Gnulib internal hooks needed to maintain the fchdir metadata. */
+_GL_EXTERN_C int _gl_register_fd (int fd, const char *filename)
+ _GL_ARG_NONNULL ((2));
+_GL_EXTERN_C void _gl_unregister_fd (int fd);
+_GL_EXTERN_C int _gl_register_dup (int oldfd, int newfd);
+_GL_EXTERN_C const char *_gl_directory_name (int fd);
# endif
+_GL_CXXALIAS_SYS (fchdir, int, (int /*fd*/));
+_GL_CXXALIASWARN (fchdir);
#elif defined GNULIB_POSIXCHECK
# undef fchdir
-# define fchdir(f) \
- (GL_LINK_WARNING ("fchdir is unportable - " \
- "use gnulib module fchdir for portability"), \
- fchdir (f))
+# if HAVE_RAW_DECL_FCHDIR
+_GL_WARN_ON_USE (fchdir, "fchdir is unportable - "
+ "use gnulib module fchdir for portability");
+# endif
+#endif
+
+
+#if @GNULIB_FCHOWNAT@
+# if @REPLACE_FCHOWNAT@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef fchownat
+# define fchownat rpl_fchownat
+# endif
+_GL_FUNCDECL_RPL (fchownat, int, (int fd, char const *file,
+ uid_t owner, gid_t group, int flag)
+ _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (fchownat, int, (int fd, char const *file,
+ uid_t owner, gid_t group, int flag));
+# else
+# if !@HAVE_FCHOWNAT@
+_GL_FUNCDECL_SYS (fchownat, int, (int fd, char const *file,
+ uid_t owner, gid_t group, int flag)
+ _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (fchownat, int, (int fd, char const *file,
+ uid_t owner, gid_t group, int flag));
+# endif
+_GL_CXXALIASWARN (fchownat);
+#elif defined GNULIB_POSIXCHECK
+# undef fchownat
+# if HAVE_RAW_DECL_FCHOWNAT
+_GL_WARN_ON_USE (fchownat, "fchownat is not portable - "
+ "use gnulib module openat for portability");
+# endif
#endif
See POSIX:2001 specification
<http://www.opengroup.org/susv3xsh/fsync.html>. */
# if !@HAVE_FSYNC@
-extern int fsync (int fd);
+_GL_FUNCDECL_SYS (fsync, int, (int fd));
# endif
+_GL_CXXALIAS_SYS (fsync, int, (int fd));
+_GL_CXXALIASWARN (fsync);
#elif defined GNULIB_POSIXCHECK
# undef fsync
-# define fsync(fd) \
- (GL_LINK_WARNING ("fsync is unportable - " \
- "use gnulib module fsync for portability"), \
- fsync (fd))
+# if HAVE_RAW_DECL_FSYNC
+_GL_WARN_ON_USE (fsync, "fsync is unportable - "
+ "use gnulib module fsync for portability");
+# endif
#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);
+# if !@HAVE_FTRUNCATE@
+_GL_FUNCDECL_SYS (ftruncate, int, (int fd, off_t length));
# endif
+_GL_CXXALIAS_SYS (ftruncate, int, (int fd, off_t length));
+_GL_CXXALIASWARN (ftruncate);
#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))
+# if HAVE_RAW_DECL_FTRUNCATE
+_GL_WARN_ON_USE (ftruncate, "ftruncate is unportable - "
+ "use gnulib module ftruncate for portability");
+# endif
#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
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);
+# if @REPLACE_GETCWD@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define getcwd rpl_getcwd
+# endif
+_GL_FUNCDECL_RPL (getcwd, char *, (char *buf, size_t size));
+_GL_CXXALIAS_RPL (getcwd, char *, (char *buf, size_t size));
+# else
+/* Need to cast, because on mingw, the second parameter is
+ int size. */
+_GL_CXXALIAS_SYS_CAST (getcwd, char *, (char *buf, size_t size));
# endif
+_GL_CXXALIASWARN (getcwd);
#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))
+# if HAVE_RAW_DECL_GETCWD
+_GL_WARN_ON_USE (getcwd, "getcwd is unportable - "
+ "use gnulib module getcwd for portability");
+# endif
#endif
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);
+_GL_FUNCDECL_SYS (getdomainname, int, (char *name, size_t len)
+ _GL_ARG_NONNULL ((1)));
# endif
+/* Need to cast, because on MacOS X 10.5 systems, the second parameter is
+ int len. */
+_GL_CXXALIAS_SYS_CAST (getdomainname, int, (char *name, size_t len));
+_GL_CXXALIASWARN (getdomainname);
#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))
+# if HAVE_RAW_DECL_GETDOMAINNAME
+_GL_WARN_ON_USE (getdomainname, "getdomainname is unportable - "
+ "use gnulib module getdomainname for portability");
+# endif
#endif
#if @GNULIB_GETDTABLESIZE@
+/* Return the maximum number of file descriptors in the current process.
+ In POSIX, this is same as sysconf (_SC_OPEN_MAX). */
# if !@HAVE_GETDTABLESIZE@
-/* Return the maximum number of file descriptors in the current process. */
-extern int getdtablesize (void);
+_GL_FUNCDECL_SYS (getdtablesize, int, (void));
# endif
+_GL_CXXALIAS_SYS (getdtablesize, int, (void));
+_GL_CXXALIASWARN (getdtablesize);
#elif defined GNULIB_POSIXCHECK
# undef getdtablesize
-# define getdtablesize() \
- (GL_LINK_WARNING ("getdtablesize is unportable - " \
- "use gnulib module getdtablesize for portability"), \
- getdtablesize ())
+# if HAVE_RAW_DECL_GETDTABLESIZE
+_GL_WARN_ON_USE (getdtablesize, "getdtablesize is unportable - "
+ "use gnulib module getdtablesize for portability");
+# endif
+#endif
+
+
+#if @GNULIB_GETGROUPS@
+/* Return the supplemental groups that the current process belongs to.
+ It is unspecified whether the effective group id is in the list.
+ If N is 0, return the group count; otherwise, N describes how many
+ entries are available in GROUPS. Return -1 and set errno if N is
+ not 0 and not large enough. Fails with ENOSYS on some systems. */
+# if @REPLACE_GETGROUPS@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef getgroups
+# define getgroups rpl_getgroups
+# endif
+_GL_FUNCDECL_RPL (getgroups, int, (int n, gid_t *groups));
+_GL_CXXALIAS_RPL (getgroups, int, (int n, gid_t *groups));
+# else
+# if !@HAVE_GETGROUPS@
+_GL_FUNCDECL_SYS (getgroups, int, (int n, gid_t *groups));
+# endif
+_GL_CXXALIAS_SYS (getgroups, int, (int n, gid_t *groups));
+# endif
+_GL_CXXALIASWARN (getgroups);
+#elif defined GNULIB_POSIXCHECK
+# undef getgroups
+# if HAVE_RAW_DECL_GETGROUPS
+_GL_WARN_ON_USE (getgroups, "getgroups is unportable - "
+ "use gnulib module getgroups for portability");
+# endif
#endif
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);
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef gethostname
+# define gethostname rpl_gethostname
+# endif
+_GL_FUNCDECL_RPL (gethostname, int, (char *name, size_t len)
+ _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (gethostname, int, (char *name, size_t len));
+# else
+# if !@HAVE_GETHOSTNAME@
+_GL_FUNCDECL_SYS (gethostname, int, (char *name, size_t len)
+ _GL_ARG_NONNULL ((1)));
+# endif
+/* Need to cast, because on Solaris 10 systems, the second parameter is
+ int len. */
+_GL_CXXALIAS_SYS_CAST (gethostname, int, (char *name, size_t len));
# endif
+_GL_CXXALIASWARN (gethostname);
#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))
+# if HAVE_RAW_DECL_GETHOSTNAME
+_GL_WARN_ON_USE (gethostname, "gethostname is unportable - "
+ "use gnulib module gethostname for portability");
+# endif
+#endif
+
+
+#if @GNULIB_GETLOGIN@
+/* Returns the user's login name, or NULL if it cannot be found. Upon error,
+ returns NULL with errno set.
+
+ See <http://www.opengroup.org/susv3xsh/getlogin.html>.
+
+ Most programs don't need to use this function, because the information is
+ available through environment variables:
+ ${LOGNAME-$USER} on Unix platforms,
+ $USERNAME on native Windows platforms.
+ */
+# if !@HAVE_GETLOGIN@
+_GL_FUNCDECL_SYS (getlogin, char *, (void));
+# endif
+_GL_CXXALIAS_SYS (getlogin, char *, (void));
+_GL_CXXALIASWARN (getlogin);
+#elif defined GNULIB_POSIXCHECK
+# undef getlogin
+# if HAVE_RAW_DECL_GETLOGIN
+_GL_WARN_ON_USE (getlogin, "getlogin is unportable - "
+ "use gnulib module getlogin for portability");
+# endif
#endif
provided (this case is hopefully rare but is left open by the POSIX spec).
See <http://www.opengroup.org/susv3xsh/getlogin.html>.
+
+ Most programs don't need to use this function, because the information is
+ available through environment variables:
+ ${LOGNAME-$USER} on Unix platforms,
+ $USERNAME on native Windows platforms.
*/
# if !@HAVE_DECL_GETLOGIN_R@
-# include <stddef.h>
-extern int getlogin_r (char *name, size_t size);
+_GL_FUNCDECL_SYS (getlogin_r, int, (char *name, size_t size)
+ _GL_ARG_NONNULL ((1)));
# endif
+/* Need to cast, because on Solaris 10 systems, the second argument is
+ int size. */
+_GL_CXXALIAS_SYS_CAST (getlogin_r, int, (char *name, size_t size));
+_GL_CXXALIASWARN (getlogin_r);
#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))
+# if HAVE_RAW_DECL_GETLOGIN_R
+_GL_WARN_ON_USE (getlogin_r, "getlogin_r is unportable - "
+ "use gnulib module getlogin_r for portability");
+# endif
#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
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define getpagesize rpl_getpagesize
# endif
+_GL_FUNCDECL_RPL (getpagesize, int, (void));
+_GL_CXXALIAS_RPL (getpagesize, int, (void));
+# else
+# if !@HAVE_GETPAGESIZE@
+# if !defined getpagesize
+/* This is for POSIX systems. */
+# if !defined _gl_getpagesize && defined _SC_PAGESIZE
+# if ! (defined __VMS && __VMS_VER < 70000000)
+# define _gl_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
+# if !defined _gl_getpagesize && defined __VMS
+# ifdef __ALPHA
+# define _gl_getpagesize() 8192
+# else
+# define _gl_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
+# if !defined _gl_getpagesize && @HAVE_OS_H@
+# include <OS.h>
+# if defined B_PAGE_SIZE
+# define _gl_getpagesize() B_PAGE_SIZE
+# endif
+# endif
/* This is for AmigaOS4.0. */
-# if !defined getpagesize && defined __amigaos4__
-# define getpagesize() 2048
-# endif
+# if !defined _gl_getpagesize && defined __amigaos4__
+# define _gl_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
+# if !defined _gl_getpagesize && @HAVE_SYS_PARAM_H@
+# include <sys/param.h>
+# ifdef EXEC_PAGESIZE
+# define _gl_getpagesize() EXEC_PAGESIZE
+# else
+# ifdef NBPG
+# ifndef CLSIZE
+# define CLSIZE 1
+# endif
+# define _gl_getpagesize() (NBPG * CLSIZE)
+# else
+# ifdef NBPC
+# define _gl_getpagesize() NBPC
+# endif
+# endif
# endif
-# define getpagesize() (NBPG * CLSIZE)
+# endif
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define getpagesize() _gl_getpagesize ()
# else
-# ifdef NBPC
-# define getpagesize() NBPC
-# endif
+static inline int
+getpagesize ()
+{
+ return _gl_getpagesize ();
+}
# endif
# endif
# endif
+/* Need to cast, because on Cygwin 1.5.x systems, the return type is size_t. */
+_GL_CXXALIAS_SYS_CAST (getpagesize, int, (void));
+# endif
+# if @HAVE_DECL_GETPAGESIZE@
+_GL_CXXALIASWARN (getpagesize);
# endif
#elif defined GNULIB_POSIXCHECK
# undef getpagesize
-# define getpagesize() \
- (GL_LINK_WARNING ("getpagesize is unportable - " \
- "use gnulib module getpagesize for portability"), \
- getpagesize ())
+# if HAVE_RAW_DECL_GETPAGESIZE
+_GL_WARN_ON_USE (getpagesize, "getpagesize is unportable - "
+ "use gnulib module getpagesize for portability");
+# endif
#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);
+# if !@HAVE_DECL_GETUSERSHELL@
+_GL_FUNCDECL_SYS (getusershell, char *, (void));
+# endif
+_GL_CXXALIAS_SYS (getusershell, char *, (void));
+_GL_CXXALIASWARN (getusershell);
+#elif defined GNULIB_POSIXCHECK
+# undef getusershell
+# if HAVE_RAW_DECL_GETUSERSHELL
+_GL_WARN_ON_USE (getusershell, "getusershell is unportable - "
+ "use gnulib module getusershell for portability");
+# endif
+#endif
+
+#if @GNULIB_GETUSERSHELL@
/* Rewind to pointer that is advanced at each getusershell() call. */
-extern void setusershell (void);
+# if !@HAVE_DECL_GETUSERSHELL@
+_GL_FUNCDECL_SYS (setusershell, void, (void));
+# endif
+_GL_CXXALIAS_SYS (setusershell, void, (void));
+_GL_CXXALIASWARN (setusershell);
+#elif defined GNULIB_POSIXCHECK
+# undef setusershell
+# if HAVE_RAW_DECL_SETUSERSHELL
+_GL_WARN_ON_USE (setusershell, "setusershell is unportable - "
+ "use gnulib module getusershell for portability");
+# endif
+#endif
+
+#if @GNULIB_GETUSERSHELL@
/* Free the pointer that is advanced at each getusershell() call and
associated resources. */
-extern void endusershell (void);
+# if !@HAVE_DECL_GETUSERSHELL@
+_GL_FUNCDECL_SYS (endusershell, void, (void));
# endif
+_GL_CXXALIAS_SYS (endusershell, void, (void));
+_GL_CXXALIASWARN (endusershell);
#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 ())
+# if HAVE_RAW_DECL_ENDUSERSHELL
+_GL_WARN_ON_USE (endusershell, "endusershell is unportable - "
+ "use gnulib module getusershell for portability");
+# endif
#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);
+# if @REPLACE_LCHOWN@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef lchown
+# define lchown rpl_lchown
+# endif
+_GL_FUNCDECL_RPL (lchown, int, (char const *file, uid_t owner, gid_t group)
+ _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (lchown, int, (char const *file, uid_t owner, gid_t group));
+# else
+# if !@HAVE_LCHOWN@
+_GL_FUNCDECL_SYS (lchown, int, (char const *file, uid_t owner, gid_t group)
+ _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (lchown, int, (char const *file, uid_t owner, gid_t group));
# endif
+_GL_CXXALIASWARN (lchown);
#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))
+# if HAVE_RAW_DECL_LCHOWN
+_GL_WARN_ON_USE (lchown, "lchown is unportable to pre-POSIX.1-2001 systems - "
+ "use gnulib module lchown for portability");
+# endif
#endif
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);
+# if @REPLACE_LINK@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define link rpl_link
+# endif
+_GL_FUNCDECL_RPL (link, int, (const char *path1, const char *path2)
+ _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (link, int, (const char *path1, const char *path2));
+# else
+# if !@HAVE_LINK@
+_GL_FUNCDECL_SYS (link, int, (const char *path1, const char *path2)
+ _GL_ARG_NONNULL ((1, 2)));
+# endif
+_GL_CXXALIAS_SYS (link, int, (const char *path1, const char *path2));
# endif
+_GL_CXXALIASWARN (link);
#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))
+# if HAVE_RAW_DECL_LINK
+_GL_WARN_ON_USE (link, "link is unportable - "
+ "use gnulib module link for portability");
+# endif
+#endif
+
+
+#if @GNULIB_LINKAT@
+/* Create a new hard link for an existing file, relative to two
+ directories. FLAG controls whether symlinks are followed.
+ Return 0 if successful, otherwise -1 and errno set. */
+# if @REPLACE_LINKAT@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef linkat
+# define linkat rpl_linkat
+# endif
+_GL_FUNCDECL_RPL (linkat, int,
+ (int fd1, const char *path1, int fd2, const char *path2,
+ int flag)
+ _GL_ARG_NONNULL ((2, 4)));
+_GL_CXXALIAS_RPL (linkat, int,
+ (int fd1, const char *path1, int fd2, const char *path2,
+ int flag));
+# else
+# if !@HAVE_LINKAT@
+_GL_FUNCDECL_SYS (linkat, int,
+ (int fd1, const char *path1, int fd2, const char *path2,
+ int flag)
+ _GL_ARG_NONNULL ((2, 4)));
+# endif
+_GL_CXXALIAS_SYS (linkat, int,
+ (int fd1, const char *path1, int fd2, const char *path2,
+ int flag));
+# endif
+_GL_CXXALIASWARN (linkat);
+#elif defined GNULIB_POSIXCHECK
+# undef linkat
+# if HAVE_RAW_DECL_LINKAT
+_GL_WARN_ON_USE (linkat, "linkat is unportable - "
+ "use gnulib module linkat for portability");
+# endif
#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);
+# if @REPLACE_LSEEK@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define lseek rpl_lseek
+# endif
+_GL_FUNCDECL_RPL (lseek, off_t, (int fd, off_t offset, int whence));
+_GL_CXXALIAS_RPL (lseek, off_t, (int fd, off_t offset, int whence));
+# else
+_GL_CXXALIAS_SYS (lseek, off_t, (int fd, off_t offset, int whence));
# endif
+_GL_CXXALIASWARN (lseek);
#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))
+# if HAVE_RAW_DECL_LSEEK
+_GL_WARN_ON_USE (lseek, "lseek does not fail with ESPIPE on pipes on some "
+ "systems - use gnulib module lseek for portability");
+# endif
+#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@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define pipe2 rpl_pipe2
+# endif
+_GL_FUNCDECL_RPL (pipe2, int, (int fd[2], int flags) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pipe2, int, (int fd[2], int flags));
+# else
+_GL_FUNCDECL_SYS (pipe2, int, (int fd[2], int flags) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_SYS (pipe2, int, (int fd[2], int flags));
+# endif
+_GL_CXXALIASWARN (pipe2);
+#elif defined GNULIB_POSIXCHECK
+# undef pipe2
+# if HAVE_RAW_DECL_PIPE2
+_GL_WARN_ON_USE (pipe2, "pipe2 is unportable - "
+ "use gnulib module pipe2 for portability");
+# endif
+#endif
+
+
+#if @GNULIB_PREAD@
+/* Read at most BUFSIZE bytes from FD into BUF, starting at OFFSET.
+ Return the number of bytes placed into BUF if successful, otherwise
+ set errno and return -1. 0 indicates EOF. See the POSIX:2001
+ specification <http://www.opengroup.org/susv3xsh/pread.html>. */
+# if @REPLACE_PREAD@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define pread rpl_pread
+# endif
+_GL_FUNCDECL_RPL (pread, ssize_t,
+ (int fd, void *buf, size_t bufsize, off_t offset)
+ _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (pread, ssize_t,
+ (int fd, void *buf, size_t bufsize, off_t offset));
+# else
+# if !@HAVE_PREAD@
+_GL_FUNCDECL_SYS (pread, ssize_t,
+ (int fd, void *buf, size_t bufsize, off_t offset)
+ _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (pread, ssize_t,
+ (int fd, void *buf, size_t bufsize, off_t offset));
+# endif
+_GL_CXXALIASWARN (pread);
+#elif defined GNULIB_POSIXCHECK
+# undef pread
+# if HAVE_RAW_DECL_PREAD
+_GL_WARN_ON_USE (pread, "pread is unportable - "
+ "use gnulib module pread for portability");
+# endif
+#endif
+
+
+#if @GNULIB_PWRITE@
+/* Write at most BUFSIZE bytes from BUF into FD, starting at OFFSET.
+ Return the number of bytes written if successful, otherwise
+ set errno and return -1. 0 indicates nothing written. See the
+ POSIX:2001 specification
+ <http://www.opengroup.org/susv3xsh/pwrite.html>. */
+# if @REPLACE_PWRITE@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define pwrite rpl_pwrite
+# endif
+_GL_FUNCDECL_RPL (pwrite, ssize_t,
+ (int fd, const void *buf, size_t bufsize, off_t offset)
+ _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (pwrite, ssize_t,
+ (int fd, const void *buf, size_t bufsize, off_t offset));
+# else
+# if !@HAVE_PWRITE@
+_GL_FUNCDECL_SYS (pwrite, ssize_t,
+ (int fd, const void *buf, size_t bufsize, off_t offset)
+ _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (pwrite, ssize_t,
+ (int fd, const void *buf, size_t bufsize, off_t offset));
+# endif
+_GL_CXXALIASWARN (pwrite);
+#elif defined GNULIB_POSIXCHECK
+# undef pwrite
+# if HAVE_RAW_DECL_PWRITE
+_GL_WARN_ON_USE (pwrite, "pwrite is unportable - "
+ "use gnulib module pwrite for portability");
+# endif
#endif
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);
+# if @REPLACE_READLINK@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define readlink rpl_readlink
+# endif
+_GL_FUNCDECL_RPL (readlink, ssize_t,
+ (const char *file, char *buf, size_t bufsize)
+ _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (readlink, ssize_t,
+ (const char *file, char *buf, size_t bufsize));
+# else
+# if !@HAVE_READLINK@
+_GL_FUNCDECL_SYS (readlink, ssize_t,
+ (const char *file, char *buf, size_t bufsize)
+ _GL_ARG_NONNULL ((1, 2)));
+# endif
+_GL_CXXALIAS_SYS (readlink, ssize_t,
+ (const char *file, char *buf, size_t bufsize));
# endif
+_GL_CXXALIASWARN (readlink);
#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))
+# if HAVE_RAW_DECL_READLINK
+_GL_WARN_ON_USE (readlink, "readlink is unportable - "
+ "use gnulib module readlink for portability");
+# endif
+#endif
+
+
+#if @GNULIB_READLINKAT@
+# if !@HAVE_READLINKAT@
+_GL_FUNCDECL_SYS (readlinkat, ssize_t,
+ (int fd, char const *file, char *buf, size_t len)
+ _GL_ARG_NONNULL ((2, 3)));
+# endif
+_GL_CXXALIAS_SYS (readlinkat, ssize_t,
+ (int fd, char const *file, char *buf, size_t len));
+_GL_CXXALIASWARN (readlinkat);
+#elif defined GNULIB_POSIXCHECK
+# undef readlinkat
+# if HAVE_RAW_DECL_READLINKAT
+_GL_WARN_ON_USE (readlinkat, "readlinkat is not portable - "
+ "use gnulib module readlinkat for portability");
+# endif
+#endif
+
+
+#if @GNULIB_RMDIR@
+/* Remove the directory DIR. */
+# if @REPLACE_RMDIR@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define rmdir rpl_rmdir
+# endif
+_GL_FUNCDECL_RPL (rmdir, int, (char const *name) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (rmdir, int, (char const *name));
+# else
+_GL_CXXALIAS_SYS (rmdir, int, (char const *name));
+# endif
+_GL_CXXALIASWARN (rmdir);
+#elif defined GNULIB_POSIXCHECK
+# undef rmdir
+# if HAVE_RAW_DECL_RMDIR
+_GL_WARN_ON_USE (rmdir, "rmdir is unportable - "
+ "use gnulib module rmdir for portability");
+# endif
#endif
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);
+# if @REPLACE_SLEEP@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef sleep
+# define sleep rpl_sleep
+# endif
+_GL_FUNCDECL_RPL (sleep, unsigned int, (unsigned int n));
+_GL_CXXALIAS_RPL (sleep, unsigned int, (unsigned int n));
+# else
+# if !@HAVE_SLEEP@
+_GL_FUNCDECL_SYS (sleep, unsigned int, (unsigned int n));
+# endif
+_GL_CXXALIAS_SYS (sleep, unsigned int, (unsigned int n));
# endif
+_GL_CXXALIASWARN (sleep);
#elif defined GNULIB_POSIXCHECK
# undef sleep
-# define sleep(n) \
- (GL_LINK_WARNING ("sleep is unportable - " \
- "use gnulib module sleep for portability"), \
- sleep (n))
+# if HAVE_RAW_DECL_SLEEP
+_GL_WARN_ON_USE (sleep, "sleep is unportable - "
+ "use gnulib module sleep for portability");
+# endif
#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);
+#if @GNULIB_SYMLINK@
+# if @REPLACE_SYMLINK@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef symlink
+# define symlink rpl_symlink
+# endif
+_GL_FUNCDECL_RPL (symlink, int, (char const *contents, char const *file)
+ _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (symlink, int, (char const *contents, char const *file));
+# else
+# if !@HAVE_SYMLINK@
+_GL_FUNCDECL_SYS (symlink, int, (char const *contents, char const *file)
+ _GL_ARG_NONNULL ((1, 2)));
+# endif
+_GL_CXXALIAS_SYS (symlink, int, (char const *contents, char const *file));
+# endif
+_GL_CXXALIASWARN (symlink);
+#elif defined GNULIB_POSIXCHECK
+# undef symlink
+# if HAVE_RAW_DECL_SYMLINK
+_GL_WARN_ON_USE (symlink, "symlink is not portable - "
+ "use gnulib module symlink for portability");
+# endif
#endif
-#ifdef FCHDIR_REPLACEMENT
-/* gnulib internal function. */
-extern void _gl_unregister_fd (int fd);
+#if @GNULIB_SYMLINKAT@
+# if !@HAVE_SYMLINKAT@
+_GL_FUNCDECL_SYS (symlinkat, int,
+ (char const *contents, int fd, char const *file)
+ _GL_ARG_NONNULL ((1, 3)));
+# endif
+_GL_CXXALIAS_SYS (symlinkat, int,
+ (char const *contents, int fd, char const *file));
+_GL_CXXALIASWARN (symlinkat);
+#elif defined GNULIB_POSIXCHECK
+# undef symlinkat
+# if HAVE_RAW_DECL_SYMLINKAT
+_GL_WARN_ON_USE (symlinkat, "symlinkat is not portable - "
+ "use gnulib module symlinkat for portability");
+# endif
#endif
-#ifdef __cplusplus
-}
+#if @GNULIB_TTYNAME_R@
+/* Store at most BUFLEN characters of the pathname of the terminal FD is
+ open on in BUF. Return 0 on success, otherwise an error number. */
+# if @REPLACE_TTYNAME_R@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef ttyname_r
+# define ttyname_r rpl_ttyname_r
+# endif
+_GL_FUNCDECL_RPL (ttyname_r, int,
+ (int fd, char *buf, size_t buflen) _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (ttyname_r, int,
+ (int fd, char *buf, size_t buflen));
+# else
+# if !@HAVE_TTYNAME_R@
+_GL_FUNCDECL_SYS (ttyname_r, int,
+ (int fd, char *buf, size_t buflen) _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (ttyname_r, int,
+ (int fd, char *buf, size_t buflen));
+# endif
+_GL_CXXALIASWARN (ttyname_r);
+#elif defined GNULIB_POSIXCHECK
+# undef ttyname_r
+# if HAVE_RAW_DECL_TTYNAME_R
+_GL_WARN_ON_USE (ttyname_r, "ttyname_r is not portable - "
+ "use gnulib module ttyname_r for portability");
+# endif
+#endif
+
+
+#if @GNULIB_UNLINK@
+# if @REPLACE_UNLINK@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef unlink
+# define unlink rpl_unlink
+# endif
+_GL_FUNCDECL_RPL (unlink, int, (char const *file) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (unlink, int, (char const *file));
+# else
+_GL_CXXALIAS_SYS (unlink, int, (char const *file));
+# endif
+_GL_CXXALIASWARN (unlink);
+#elif defined GNULIB_POSIXCHECK
+# undef unlink
+# if HAVE_RAW_DECL_UNLINK
+_GL_WARN_ON_USE (unlink, "unlink is not portable - "
+ "use gnulib module unlink for portability");
+# endif
+#endif
+
+
+#if @GNULIB_UNLINKAT@
+# if @REPLACE_UNLINKAT@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef unlinkat
+# define unlinkat rpl_unlinkat
+# endif
+_GL_FUNCDECL_RPL (unlinkat, int, (int fd, char const *file, int flag)
+ _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (unlinkat, int, (int fd, char const *file, int flag));
+# else
+# if !@HAVE_UNLINKAT@
+_GL_FUNCDECL_SYS (unlinkat, int, (int fd, char const *file, int flag)
+ _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (unlinkat, int, (int fd, char const *file, int flag));
+# endif
+_GL_CXXALIASWARN (unlinkat);
+#elif defined GNULIB_POSIXCHECK
+# undef unlinkat
+# if HAVE_RAW_DECL_UNLINKAT
+_GL_WARN_ON_USE (unlinkat, "unlinkat is not portable - "
+ "use gnulib module openat for portability");
+# endif
+#endif
+
+
+#if @GNULIB_USLEEP@
+/* Pause the execution of the current thread for N microseconds.
+ Returns 0 on completion, or -1 on range error.
+ See the POSIX:2001 specification
+ <http://www.opengroup.org/susv3xsh/sleep.html>. */
+# if @REPLACE_USLEEP@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef usleep
+# define usleep rpl_usleep
+# endif
+_GL_FUNCDECL_RPL (usleep, int, (useconds_t n));
+_GL_CXXALIAS_RPL (usleep, int, (useconds_t n));
+# else
+# if !@HAVE_USLEEP@
+_GL_FUNCDECL_SYS (usleep, int, (useconds_t n));
+# endif
+_GL_CXXALIAS_SYS (usleep, int, (useconds_t n));
+# endif
+_GL_CXXALIASWARN (usleep);
+#elif defined GNULIB_POSIXCHECK
+# undef usleep
+# if HAVE_RAW_DECL_USLEEP
+_GL_WARN_ON_USE (usleep, "usleep is unportable - "
+ "use gnulib module usleep for portability");
+# endif
+#endif
+
+
+#if @GNULIB_WRITE@
+/* Write up to COUNT bytes starting at BUF to file descriptor FD.
+ See the POSIX:2001 specification
+ <http://www.opengroup.org/susv3xsh/write.html>. */
+# if @REPLACE_WRITE@ && @GNULIB_UNISTD_H_SIGPIPE@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef write
+# define write rpl_write
+# endif
+_GL_FUNCDECL_RPL (write, ssize_t, (int fd, const void *buf, size_t count)
+ _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (write, ssize_t, (int fd, const void *buf, size_t count));
+# else
+/* Need to cast, because on mingw, the third parameter is
+ unsigned int count
+ and the return type is 'int'. */
+_GL_CXXALIAS_SYS_CAST (write, ssize_t, (int fd, const void *buf, size_t count));
+# endif
+_GL_CXXALIASWARN (write);
#endif
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