New module 'uniwbrk/table'.

[gnulib.git] / lib / unistd.in.h

diff --git a/lib/unistd.in.h b/lib/unistd.in.h
index d949c99..d8276b1 100644 (file)
--- a/lib/unistd.in.h
+++ b/lib/unistd.in.h
@@ -1,5 +1,5 @@
 /* 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
@@ -29,12 +29,13 @@
 #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@
@@ -42,9 +43,61 @@
 # 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
@@ -284,9 +337,16 @@ extern int getdtablesize (void);
    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 !@HAVE_GETHOSTNAME@
+# 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) \
@@ -426,6 +486,23 @@ extern int lchown (char const *file, uid_t owner, gid_t group);
 #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.