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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)
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