/* 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
#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
-#if ((@GNULIB_WRITE@ && @REPLACE_WRITE@ && @GNULIB_UNISTD_H_SIGPIPE@) \
- || (@GNULIB_READLINK@ && (!@HAVE_READLINK@ || @REPLACE_READLINK@)) \
- || (@GNULIB_READLINKAT@ && !@HAVE_READLINKAT@))
+/* 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@ || @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@ && !defined _GL_SYSTEM_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
# include <winsock2.h>
# if !defined _GL_SYS_SOCKET_H
# undef socket
-# define socket socket_used_without_including_sys_socket_h
+# define socket socket_used_without_including_sys_socket_h
# undef connect
-# define connect connect_used_without_including_sys_socket_h
+# define connect connect_used_without_including_sys_socket_h
# undef accept
-# define accept accept_used_without_including_sys_socket_h
+# define accept accept_used_without_including_sys_socket_h
# undef bind
-# define bind bind_used_without_including_sys_socket_h
+# define bind bind_used_without_including_sys_socket_h
# undef getpeername
-# define getpeername getpeername_used_without_including_sys_socket_h
+# define getpeername getpeername_used_without_including_sys_socket_h
# undef getsockname
-# define getsockname getsockname_used_without_including_sys_socket_h
+# define getsockname getsockname_used_without_including_sys_socket_h
# undef getsockopt
-# define getsockopt getsockopt_used_without_including_sys_socket_h
+# define getsockopt getsockopt_used_without_including_sys_socket_h
# undef listen
-# define listen listen_used_without_including_sys_socket_h
+# define listen listen_used_without_including_sys_socket_h
# undef recv
-# define recv recv_used_without_including_sys_socket_h
+# define recv recv_used_without_including_sys_socket_h
# undef send
-# define send send_used_without_including_sys_socket_h
+# define send send_used_without_including_sys_socket_h
# undef recvfrom
-# define recvfrom recvfrom_used_without_including_sys_socket_h
+# define recvfrom recvfrom_used_without_including_sys_socket_h
# undef sendto
-# define sendto sendto_used_without_including_sys_socket_h
+# define sendto sendto_used_without_including_sys_socket_h
# undef setsockopt
-# define setsockopt setsockopt_used_without_including_sys_socket_h
+# define setsockopt setsockopt_used_without_including_sys_socket_h
# undef shutdown
-# define shutdown shutdown_used_without_including_sys_socket_h
+# define shutdown shutdown_used_without_including_sys_socket_h
# endif
# if !defined _GL_SYS_SELECT_H
# undef select
-# define select select_used_without_including_sys_select_h
+# define select select_used_without_including_sys_select_h
# endif
# endif
#endif
/* The definition of GL_LINK_WARNING is copied here. */
+/* The definition of _GL_ARG_NONNULL is copied here. */
+
/* OS/2 EMX lacks these macros. */
#ifndef STDIN_FILENO
Return 0 if successful, otherwise -1 and errno set.
See the POSIX:2001 specification
<http://www.opengroup.org/susv3xsh/chown.html>. */
-extern int chown (const char *file, uid_t uid, gid_t gid);
+extern int chown (const char *file, uid_t uid, gid_t gid)
+ _GL_ARG_NONNULL ((1));
# endif
#elif defined GNULIB_POSIXCHECK
# undef chown
# if !@HAVE_EUIDACCESS@
/* 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);
+extern int euidaccess (const char *filename, int mode) _GL_ARG_NONNULL ((1));
# endif
#elif defined GNULIB_POSIXCHECK
# undef euidaccess
#if @GNULIB_FACCESSAT@
# if !@HAVE_FACCESSAT@
-int faccessat (int fd, char const *file, int mode, int flag);
+extern int faccessat (int fd, char const *file, int mode, int flag)
+ _GL_ARG_NONNULL ((2));
# endif
#elif defined GNULIB_POSIXCHECK
# undef faccessat
-# define faccessat(d,n,m,f) \
+# define faccessat(d,n,m,f) \
(GL_LINK_WARNING ("faccessat is not portable - " \
"use gnulib module faccessat for portability"), \
faccessat (d, n, m, f))
extern int fchdir (int /*fd*/);
/* Gnulib internal hooks needed to maintain the fchdir metadata. */
-extern int _gl_register_fd (int fd, const char *filename);
+extern int _gl_register_fd (int fd, const char *filename)
+ _GL_ARG_NONNULL ((2));
extern void _gl_unregister_fd (int fd);
extern int _gl_register_dup (int oldfd, int newfd);
extern const char *_gl_directory_name (int fd);
# define fchownat rpl_fchownat
# endif
# if !@HAVE_FCHOWNAT@ || @REPLACE_FCHOWNAT@
-extern int fchownat (int fd, char const *file, uid_t owner, gid_t group, int flag);
+extern int fchownat (int fd, char const *file, uid_t owner, gid_t group, int flag)
+ _GL_ARG_NONNULL ((2));
# endif
#elif defined GNULIB_POSIXCHECK
# undef fchownat
-# define fchownat(d,n,o,g,f) \
+# define fchownat(d,n,o,g,f) \
(GL_LINK_WARNING ("fchownat is not portable - " \
"use gnulib module openat for portability"), \
fchownat (d, n, o, g, f))
#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.
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);
+extern int getdomainname(char *name, size_t len) _GL_ARG_NONNULL ((1));
# endif
#elif defined GNULIB_POSIXCHECK
# undef getdomainname
# define gethostname rpl_gethostname
# endif
# if @UNISTD_H_HAVE_WINSOCK2_H@ || !@HAVE_GETHOSTNAME@
-extern int gethostname(char *name, size_t len);
+extern int gethostname(char *name, size_t len) _GL_ARG_NONNULL ((1));
# endif
#elif @UNISTD_H_HAVE_WINSOCK2_H@
# undef gethostname
#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@
+extern char *getlogin (void);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef getlogin
+# define getlogin() \
+ (GL_LINK_WARNING ("getlogin is unportable - " \
+ "use gnulib module getlogin for portability"), \
+ getlogin ())
+#endif
+
+
#if @GNULIB_GETLOGIN_R@
/* Copies the user's login name to NAME.
The array pointed to by NAME has room for SIZE bytes.
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);
+extern int getlogin_r (char *name, size_t size) _GL_ARG_NONNULL ((1));
# endif
#elif defined GNULIB_POSIXCHECK
# undef getlogin_r
Return 0 if successful, otherwise -1 and errno set.
See the POSIX:2001 specification
<http://www.opengroup.org/susv3xsh/lchown.html>. */
-extern int lchown (char const *file, uid_t owner, gid_t group);
+extern int lchown (char const *file, uid_t owner, gid_t group)
+ _GL_ARG_NONNULL ((1));
# endif
#elif defined GNULIB_POSIXCHECK
# undef lchown
See POSIX:2001 specification
<http://www.opengroup.org/susv3xsh/link.html>. */
# if !@HAVE_LINK@ || @REPLACE_LINK@
-extern int link (const char *path1, const char *path2);
+extern int link (const char *path1, const char *path2)
+ _GL_ARG_NONNULL ((1, 2));
# endif
#elif defined GNULIB_POSIXCHECK
# undef link
Return 0 if successful, otherwise -1 and errno set. */
# if !@HAVE_LINKAT@ || @REPLACE_LINKAT@
extern int linkat (int fd1, const char *path1, int fd2, const char *path2,
- int flag);
+ int flag)
+ _GL_ARG_NONNULL ((2, 4));
# endif
#elif defined GNULIB_POSIXCHECK
# undef linkat
-# define link(f1,path1,f2,path2,f) \
+# define linkat(f1,path1,f2,path2,f) \
(GL_LINK_WARNING ("linkat is unportable - " \
"use gnulib module linkat for portability"), \
linkat (f1, path1, f2, path2,f))
# if @HAVE_PIPE2@
# define pipe2 rpl_pipe2
# endif
-extern int pipe2 (int fd[2], int flags);
+extern int pipe2 (int fd[2], int flags) _GL_ARG_NONNULL ((1));
#elif defined GNULIB_POSIXCHECK
# undef pipe2
# define pipe2(f,o) \
set errno and return -1. 0 indicates EOF. See the POSIX:2001
specification <http://www.opengroup.org/susv3xsh/pread.html>. */
# if !@HAVE_PREAD@ || @REPLACE_PREAD@
- extern ssize_t pread (int fd, void *buf, size_t bufsize, off_t offset);
+ extern ssize_t pread (int fd, void *buf, size_t bufsize, off_t offset)
+ _GL_ARG_NONNULL ((2));
# endif
#elif defined GNULIB_POSIXCHECK
# undef pread
-# define pread(f,b,s,o) \
+# define pread(f,b,s,o) \
(GL_LINK_WARNING ("pread is unportable - " \
"use gnulib module pread for portability"), \
pread (f, b, s, o))
See the POSIX:2001 specification
<http://www.opengroup.org/susv3xsh/readlink.html>. */
# if !@HAVE_READLINK@ || @REPLACE_READLINK@
-extern ssize_t readlink (const char *file, char *buf, size_t bufsize);
+extern ssize_t readlink (const char *file, char *buf, size_t bufsize)
+ _GL_ARG_NONNULL ((1, 2));
# endif
#elif defined GNULIB_POSIXCHECK
# undef readlink
#if @GNULIB_READLINKAT@
# if !@HAVE_READLINKAT@
-ssize_t readlinkat (int fd, char const *file, char *buf, size_t len);
+extern ssize_t readlinkat (int fd, char const *file, char *buf, size_t len)
+ _GL_ARG_NONNULL ((2, 3));
# endif
#elif defined GNULIB_POSIXCHECK
# undef readlinkat
-# define readlinkat(d,n,b,l) \
+# define readlinkat(d,n,b,l) \
(GL_LINK_WARNING ("readlinkat is not portable - " \
"use gnulib module symlinkat for portability"), \
readlinkat (d, n, b, l))
# if @REPLACE_RMDIR@
# define rmdir rpl_rmdir
/* Remove the directory DIR. */
-extern int rmdir (char const *name);
+extern int rmdir (char const *name) _GL_ARG_NONNULL ((1));
# endif
#elif defined GNULIB_POSIXCHECK
# undef rmdir
# define symlink rpl_symlink
# endif
# if !@HAVE_SYMLINK@ || @REPLACE_SYMLINK@
-int symlink (char const *contents, char const *file);
+extern int symlink (char const *contents, char const *file)
+ _GL_ARG_NONNULL ((1, 2));
# endif
#elif defined GNULIB_POSIXCHECK
# undef symlink
-# define symlink(c,n) \
+# define symlink(c,n) \
(GL_LINK_WARNING ("symlink is not portable - " \
"use gnulib module symlink for portability"), \
symlink (c, n))
#if @GNULIB_SYMLINKAT@
# if !@HAVE_SYMLINKAT@
-int symlinkat (char const *contents, int fd, char const *file);
+extern int symlinkat (char const *contents, int fd, char const *file)
+ _GL_ARG_NONNULL ((1, 3));
# endif
#elif defined GNULIB_POSIXCHECK
# undef symlinkat
-# define symlinkat(c,d,n) \
+# define symlinkat(c,d,n) \
(GL_LINK_WARNING ("symlinkat is not portable - " \
"use gnulib module symlinkat for portability"), \
symlinkat (c, d, n))
# if @REPLACE_UNLINK@
# undef unlink
# define unlink rpl_unlink
-extern int unlink (char const *file);
+extern int unlink (char const *file) _GL_ARG_NONNULL ((1));
# endif
#elif defined GNULIB_POSIXCHECK
# undef unlink
# define unlinkat rpl_unlinkat
# endif
# if !@HAVE_UNLINKAT@ || @REPLACE_UNLINKAT@
-extern int unlinkat (int fd, char const *file, int flag);
+extern int unlinkat (int fd, char const *file, int flag) _GL_ARG_NONNULL ((2));
# endif
#elif defined GNULIB_POSIXCHECK
# undef unlinkat
<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);
+extern ssize_t write (int fd, const void *buf, size_t count)
+ _GL_ARG_NONNULL ((2));
#endif