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/*
* Copyright (c) 1997-2001 Erez Zadok
* Copyright (c) 1990 Jan-Simon Pendry
* Copyright (c) 1990 Imperial College of Science, Technology & Medicine
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Jan-Simon Pendry at Imperial College, London.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgment:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* %W% (Berkeley) %G%
*
* $Id: amfs_link.c,v 1.3.2.1 2001/01/10 03:23:02 ezk Exp $
*
*/
/*
* Symbol-link file system
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <am_defs.h>
#include <amd.h>
/*
* Ops structures
*/
am_ops amfs_link_ops =
{
"link",
amfs_link_match,
0, /* amfs_link_init */
amfs_auto_fmount,
amfs_link_fmount,
amfs_auto_fumount,
amfs_link_fumount,
amfs_error_lookuppn,
amfs_error_readdir,
0, /* amfs_link_readlink */
0, /* amfs_link_mounted */
0, /* amfs_link_umounted */
find_amfs_auto_srvr,
0
};
/*
* SFS needs a link.
*/
char *
amfs_link_match(am_opts *fo)
{
if (!fo->opt_fs) {
plog(XLOG_USER, "link: no fs specified");
return 0;
}
/*
* Bug report (14/12/89) from Jay Plett <jay@princeton.edu>
* If an automount point has the same name as an existing
* link type mount Amd hits a race condition and either hangs
* or causes a symlink loop.
*
* If fs begins with a '/' change the opt_fs & opt_sublink
* fields so that the fs option doesn't end up pointing at
* an existing symlink.
*
* If sublink is nil then set sublink to fs
* else set sublink to fs / sublink
*
* Finally set fs to ".".
*/
if (*fo->opt_fs == '/') {
char *fullpath;
char *link = fo->opt_sublink;
if (link) {
if (*link == '/')
fullpath = strdup(link);
else
fullpath = str3cat((char *) 0, fo->opt_fs, "/", link);
} else {
fullpath = strdup(fo->opt_fs);
}
if (fo->opt_sublink)
XFREE(fo->opt_sublink);
fo->opt_sublink = fullpath;
fo->opt_fs = str3cat(fo->opt_fs, ".", fullpath, "");
}
return strdup(fo->opt_fs);
}
int
amfs_link_fmount(mntfs *mf)
{
/*
* Wow - this is hard to implement! :-)
*/
return 0;
}
int
amfs_link_fumount(mntfs *mf)
{
return 0;
}
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