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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /sysdeps/mach/hurd/link.c
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initial import
Diffstat (limited to 'sysdeps/mach/hurd/link.c')
-rw-r--r--sysdeps/mach/hurd/link.c60
1 files changed, 60 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/link.c b/sysdeps/mach/hurd/link.c
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+++ b/sysdeps/mach/hurd/link.c
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+/* Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <hurd.h>
+
+/* Make a link to FROM called TO. */
+int
+DEFUN(__link, (from, to), CONST char *from AND CONST char *to)
+{
+ error_t err;
+ file_t oldfile, linknode, todir;
+ char *toname;
+
+ oldfile = __file_name_lookup (from, 0, 0);
+ if (oldfile == MACH_PORT_NULL)
+ return -1;
+
+ /* The file_getlinknode RPC returns the port that should be passed to
+ the receiving filesystem (the one containing TODIR) in dir_link. */
+
+ err = __file_getlinknode (oldfile, &linknode);
+ __mach_port_deallocate (__mach_task_self (), oldfile);
+ if (err)
+ return __hurd_fail (err);
+
+ todir = __file_name_split (to, &toname);
+ if (todir != MACH_PORT_NULL)
+ {
+ err = __dir_link (linknode, todir, toname);
+ __mach_port_deallocate (__mach_task_self (), todir);
+ }
+ __mach_port_deallocate (__mach_task_self (), linknode);
+ if (todir == MACH_PORT_NULL)
+ return -1;
+
+ if (err)
+ return __hurd_fail (err);
+ return 0;
+}
+
+weak_alias (__link, link)