/*
* Copyright (c) 1997-1999 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: ops_TEMPLATE.c,v 1.2 1999/01/10 21:53:48 ezk Exp $
*
*/
/*
* An empty template for an amd pseudo filesystem "foofs".
*/
/*
* NOTE: if this is an Amd file system, prepend "amfs_" to all foofs symbols
* and renamed the file name to amfs_foofs.c. If it is a native file system
* (such as pcfs, isofs, or ffs), then you can keep the names as is, and
* just rename the file to ops_foofs.c.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <am_defs.h>
#include <amd.h>
/* forward declarations */
static char * foofs_match(am_opts *fo);
static int foofs_init(mntfs *mf);
static int foofs_mount(am_node *mp);
static int foofs_fmount(mntfs *mf);
static int foofs_umount(am_node *mp);
static int foofs_fumount(mntfs *mf);
static am_node * foofs_lookuppn(am_node *mp, char *fname, int *error_return, int op);
static int foofs_readdir(am_node *mp, nfscookie cookie, nfsdirlist *dp, nfsentry *ep, int count);
static am_node * foofs_readlink(am_node *mp, int *error_return);
static void foofs_mounted(mntfs *mf);
static void foofs_umounted(am_node *mp);
fserver * foofs_ffserver(mntfs *mf);
/*
* Foofs operations.
* Define only those you need, others set to 0 (NULL)
*/
am_ops foofs_ops =
{
"foofs", /* name of file system */
foofs_match, /* match */
foofs_init, /* initialize */
foofs_mount, /* mount vnode */
foofs_fmount, /* mount vfs */
foofs_umount, /* unmount vnode */
foofs_fumount, /* unmount VFS */
foofs_lookuppn, /* lookup path-name */
foofs_readdir, /* read directory */
foofs_readlink, /* read link */
foofs_mounted, /* after-mount extra actions */
foofs_umounted, /* after-umount extra actions */
foofs_ffserver, /* find a file server */
FS_MKMNT | FS_BACKGROUND | FS_AMQINFO /* flags */
};
/*
* Check that f/s has all needed fields.
* Returns: matched string if found, NULL otherwise.
*/
static char *
foofs_match(am_opts *fo)
{
char *cp = "fill this with a way to find the match";
plog(XLOG_INFO, "entering foofs_match...");
if (cp)
return cp; /* OK */
return NULL; /* not OK */
}
/*
* Initialize.
* Returns: 0 if OK, non-zero (errno) if failed.
*/
static int
foofs_init(mntfs *mf)
{
int error = 0;
plog(XLOG_INFO, "entering foofs_init...");
error = EPERM; /* XXX: fixme */
return error;
}
/*
* Mount vnode.
* Returns: 0 if OK, non-zero (errno) if failed.
*/
static int
foofs_mount(am_node *mp)
{
int error = 0;
plog(XLOG_INFO, "entering foofs_mount...");
error = EPERM; /* XXX: fixme */
return error;
}
/*
* Mount vfs.
* Returns: 0 if OK, non-zero (errno) if failed.
*/
static int
foofs_fmount(mntfs *mf)
{
int error = 0;
plog(XLOG_INFO, "entering foofs_fmount...");
error = EPERM; /* XXX: fixme */
return error;
}
/*
* Unmount vnode.
* Returns: 0 if OK, non-zero (errno) if failed.
*/
static int
foofs_umount(am_node *mp)
{
int error = 0;
plog(XLOG_INFO, "entering foofs_umount...");
error = EPERM; /* XXX: fixme */
return error;
}
/*
* Unmount VFS.
* Returns: 0 if OK, non-zero (errno) if failed.
*/
static int
foofs_fumount(mntfs *mf)
{
int error = 0;
plog(XLOG_INFO, "entering foofs_fumount...");
error = EPERM; /* XXX: fixme */
return error;
}
/*
* Lookup path-name.
* Returns: the am_node that was found, or NULL if failed.
* If failed, also fills in errno in error_return.
*/
static am_node *
foofs_lookuppn(am_node *mp, char *fname, int *error_return, int op)
{
int error = 0;
plog(XLOG_INFO, "entering foofs_lookuppn...");
error = EPERM; /* XXX: fixme */
*error_return = error;
return NULL;
}
/*
* Read directory.
* Returns: 0 if OK, non-zero (errno) if failed.
* If OK, fills in ep with chain of directory entries.
*/
static int
foofs_readdir(am_node *mp, nfscookie cookie, nfsdirlist *dp, nfsentry *ep, int count)
{
int error = 0;
plog(XLOG_INFO, "entering foofs_readdir...");
error = EPERM; /* XXX: fixme */
return error;
}
/*
* Read link.
* Returns: am_node found, or NULL if not found.
* If failed, fills in errno in error_return.
*/
static am_node *
foofs_readlink(am_node *mp, int *error_return)
{
int error = 0;
plog(XLOG_INFO, "entering foofs_readlink...");
error = EPERM; /* XXX: fixme */
*error_return = error;
return NULL;
}
/*
* Async mount callback function.
* After the base mount went OK, sometimes
* there are additional actions that are needed. See union_mounted() and
* toplvl_mounted().
*/
static void
foofs_mounted(mntfs *mf)
{
plog(XLOG_INFO, "entering foofs_mounted...");
return;
}
/*
* Async unmount callback function.
* After the base umount() succeeds, we may want to take extra actions,
* such as informing remote mount daemons that we've unmounted them.
* See amfs_auto_umounted(), host_umounted(), nfs_umounted().
*/
static void
foofs_umounted(am_node *mp)
{
plog(XLOG_INFO, "entering foofs_umounted...");
return;
}
/*
* Find a file server.
* Returns: fserver of found server, or NULL if not found.
*/
fserver *
foofs_ffserver(mntfs *mf)
{
plog(XLOG_INFO, "entering foofs_ffserver...");
return NULL;
}
