59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
/* Copyright (C) 1991-2022 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 Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <stddef.h>
|
|
#include <unistd.h>
|
|
#include <hurd.h>
|
|
|
|
/* Make a link to FROM called TO. */
|
|
int
|
|
__link (const char *from, 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 (todir, linknode, toname, 1);
|
|
__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)
|