diff options
Diffstat (limited to 'lib/unistd.in.h')
| -rw-r--r-- | lib/unistd.in.h | 1193 |
1 files changed, 947 insertions, 246 deletions
diff --git a/lib/unistd.in.h b/lib/unistd.in.h index 19bf5be8..fa82bbf2 100644 --- a/lib/unistd.in.h +++ b/lib/unistd.in.h @@ -1,5 +1,5 @@ /* 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 Lesser General Public License as published by @@ -15,85 +15,171 @@ 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@ || defined GNULIB_POSIXCHECK) /* Get ssize_t. */ # include <sys/types.h> #endif -/* Get getopt(), optarg, optind, opterr, optopt. */ -#if @GNULIB_UNISTD_H_GETOPT@ +/* 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 @@ -106,75 +192,147 @@ # 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 @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 +_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 @GNULIB_DUP2@ -# if @REPLACE_DUP2@ -# define dup2 rpl_dup2 +#if @REPLACE_DUP@ +# if !(defined __cplusplus && defined GNULIB_NAMESPACE) +# define dup rpl_dup # endif -# if !@HAVE_DUP2@ || @REPLACE_DUP2@ +_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@ /* Copy the file descriptor OLDFD into file descriptor NEWFD. Do nothing if NEWFD = OLDFD, otherwise close NEWFD first if it is open. Return newfd if successful, otherwise -1 and errno set. See the POSIX:2001 specification <http://www.opengroup.org/susv3xsh/dup2.html>. */ -extern int dup2 (int oldfd, int newfd); +# 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 @@ -186,59 +344,126 @@ extern int dup2 (int oldfd, int newfd); # 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); - -# if @REPLACE_DUP2@ -# undef dup2 -# endif -# define dup2 rpl_dup2_fchdir -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 @@ -248,39 +473,39 @@ extern int dup2 (int, int); 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 @@ -291,15 +516,24 @@ extern int ftruncate (int fd, off_t length); 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 @@ -315,28 +549,65 @@ extern char * getcwd (char *buf, size_t size); 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 @@ -349,21 +620,57 @@ extern int getdtablesize (void); 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 @@ -376,123 +683,184 @@ extern int gethostname(char *name, size_t len); 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@ -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 @@ -501,33 +869,150 @@ extern int lchown (char const *file, uid_t owner, gid_t group); 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 @@ -537,15 +1022,70 @@ extern int link (const char *path1, const char *path2); successful, otherwise -1 and errno set. See the POSIX:2001 specification <http://www.opengroup.org/susv3xsh/readlink.html>. */ -# if !@HAVE_READLINK@ -extern int readlink (const char *file, char *buf, size_t bufsize); +# 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 symlinkat 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 @@ -554,36 +1094,197 @@ extern int readlink (const char *file, char *buf, size_t bufsize); 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 |