/* Substitute for and wrapper around <unistd.h>.
- Copyright (C) 2003-2008 Free Software Foundation, Inc.
+ Copyright (C) 2003-2009 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#ifndef _GL_UNISTD_H
#define _GL_UNISTD_H
-/* mingw doesn't define the SEEK_* macros in <unistd.h>. */
+/* mingw doesn't define the SEEK_* or *_FILENO macros in <unistd.h>. */
#if !(defined SEEK_CUR && defined SEEK_END && defined SEEK_SET)
# include <stdio.h>
#endif
/* mingw fails to declare _exit in <unistd.h>. */
+/* mingw, BeOS, Haiku declare environ in <stdlib.h>, not in <unistd.h>. */
#include <stdlib.h>
#if @GNULIB_WRITE@ && @REPLACE_WRITE@ && @GNULIB_UNISTD_H_SIGPIPE@
# include <sys/types.h>
#endif
+#if @GNULIB_GETHOSTNAME@
+/* Get all possible declarations of gethostname(). */
+# if @UNISTD_H_HAVE_WINSOCK2_H@
+# include <winsock2.h>
+# if !defined _GL_SYS_SOCKET_H
+# undef socket
+# define socket socket_used_without_including_sys_socket_h
+# undef connect
+# define connect connect_used_without_including_sys_socket_h
+# undef accept
+# define accept accept_used_without_including_sys_socket_h
+# undef bind
+# define bind bind_used_without_including_sys_socket_h
+# undef getpeername
+# define getpeername getpeername_used_without_including_sys_socket_h
+# undef getsockname
+# define getsockname getsockname_used_without_including_sys_socket_h
+# undef getsockopt
+# define getsockopt getsockopt_used_without_including_sys_socket_h
+# undef listen
+# define listen listen_used_without_including_sys_socket_h
+# undef recv
+# define recv recv_used_without_including_sys_socket_h
+# undef send
+# define send send_used_without_including_sys_socket_h
+# undef recvfrom
+# define recvfrom recvfrom_used_without_including_sys_socket_h
+# undef sendto
+# define sendto sendto_used_without_including_sys_socket_h
+# undef setsockopt
+# define setsockopt setsockopt_used_without_including_sys_socket_h
+# undef shutdown
+# define shutdown shutdown_used_without_including_sys_socket_h
+# endif
+# if !defined _GL_SYS_SELECT_H
+# undef select
+# define select select_used_without_including_sys_select_h
+# endif
+# endif
+#endif
+
/* The definition of GL_LINK_WARNING is copied here. */
+/* OS/2 EMX lacks these macros. */
+#ifndef STDIN_FILENO
+# define STDIN_FILENO 0
+#endif
+#ifndef STDOUT_FILENO
+# define STDOUT_FILENO 1
+#endif
+#ifndef STDERR_FILENO
+# define STDERR_FILENO 2
+#endif
+
/* Declare overridden functions. */
#ifdef __cplusplus
#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
#endif
+#if @GNULIB_EUIDACCESS@
+# if !@HAVE_EUIDACCESS@
+/* Like access(), except that is uses the effective user id and group id of
+ the current process. */
+extern int euidaccess (const char *filename, int mode);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef euidaccess
+# define euidaccess(f,m) \
+ (GL_LINK_WARNING ("euidaccess is unportable - " \
+ "use gnulib module euidaccess for portability"), \
+ euidaccess (f, m))
+#endif
+
+
#if @GNULIB_FCHDIR@
# if @REPLACE_FCHDIR@
#endif
+#if @GNULIB_GETHOSTNAME@
+/* Return the standard host name of the machine.
+ WARNING! The host name may or may not be fully qualified.
+
+ Put up to LEN bytes of the host name into NAME.
+ Null terminate it if the name is shorter than LEN.
+ If the host name is longer than LEN, set errno = EINVAL and return -1.
+ Return 0 if successful, otherwise set errno and return -1. */
+# if @UNISTD_H_HAVE_WINSOCK2_H@
+# undef gethostname
+# define gethostname rpl_gethostname
+# endif
+# if @UNISTD_H_HAVE_WINSOCK2_H@ || !@HAVE_GETHOSTNAME@
+extern int gethostname(char *name, size_t len);
+# endif
+#elif @UNISTD_H_HAVE_WINSOCK2_H@
+# undef gethostname
+# define gethostname gethostname_used_without_requesting_gnulib_module_gethostname
+#elif defined GNULIB_POSIXCHECK
+# undef gethostname
+# define gethostname(n,l) \
+ (GL_LINK_WARNING ("gethostname is unportable - " \
+ "use gnulib module gethostname for portability"), \
+ gethostname (n, l))
+#endif
+
+
#if @GNULIB_GETLOGIN_R@
/* Copies the user's login name to NAME.
The array pointed to by NAME has room for SIZE bytes.
#endif
+#if @GNULIB_GETUSERSHELL@
+# if !@HAVE_GETUSERSHELL@
+/* Return the next valid login shell on the system, or NULL when the end of
+ the list has been reached. */
+extern char *getusershell (void);
+/* Rewind to pointer that is advanced at each getusershell() call. */
+extern void setusershell (void);
+/* Free the pointer that is advanced at each getusershell() call and
+ associated resources. */
+extern void endusershell (void);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef getusershell
+# define getusershell() \
+ (GL_LINK_WARNING ("getusershell is unportable - " \
+ "use gnulib module getusershell for portability"), \
+ getusershell ())
+# undef setusershell
+# define setusershell() \
+ (GL_LINK_WARNING ("setusershell is unportable - " \
+ "use gnulib module getusershell for portability"), \
+ setusershell ())
+# undef endusershell
+# define endusershell() \
+ (GL_LINK_WARNING ("endusershell is unportable - " \
+ "use gnulib module getusershell for portability"), \
+ endusershell ())
+#endif
+
+
#if @GNULIB_LCHOWN@
# if @REPLACE_LCHOWN@
/* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
#endif
+#if @GNULIB_LINK@
+/* Create a new hard link for an existing file.
+ Return 0 if successful, otherwise -1 and errno set.
+ See POSIX:2001 specification
+ <http://www.opengroup.org/susv3xsh/link.html>. */
+# if !@HAVE_LINK@
+extern int link (const char *path1, const char *path2);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef link
+# define link(path1,path2) \
+ (GL_LINK_WARNING ("link is unportable - " \
+ "use gnulib module link for portability"), \
+ link (path1, path2))
+#endif
+
+
#if @GNULIB_LSEEK@
# if @REPLACE_LSEEK@
/* Set the offset of FD relative to SEEK_SET, SEEK_CUR, or SEEK_END.
projects / gnulib.git / blobdiff