296 lines
7.2 KiB
C
296 lines
7.2 KiB
C
/* $NetBSD: ops_TEMPLATE.c,v 1.1.1.4 2001/05/13 17:50:15 veego Exp $ */
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/*
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* Copyright (c) 1997-2001 Erez Zadok
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* Copyright (c) 1990 Jan-Simon Pendry
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* Copyright (c) 1990 Imperial College of Science, Technology & Medicine
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Jan-Simon Pendry at Imperial College, London.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgment:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* %W% (Berkeley) %G%
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*
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* Id: ops_TEMPLATE.c,v 1.3.2.2 2001/01/12 23:28:57 ro Exp
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*
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*/
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/*
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* An empty template for an amd pseudo filesystem "foofs".
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*/
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/*
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* NOTE: if this is an Amd file system, prepend "amfs_" to all foofs symbols
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* and renamed the file name to amfs_foofs.c. If it is a native file system
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* (such as pcfs, isofs, or ffs), then you can keep the names as is, and
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* just rename the file to ops_foofs.c.
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif /* HAVE_CONFIG_H */
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#include <am_defs.h>
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#include <amd.h>
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/* forward declarations */
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static char *foofs_match(am_opts *fo);
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static int foofs_init(mntfs *mf);
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static int foofs_mount(am_node *mp);
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static int foofs_fmount(mntfs *mf);
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static int foofs_umount(am_node *mp);
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static int foofs_fumount(mntfs *mf);
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static am_node *foofs_lookuppn(am_node *mp, char *fname, int *error_return, int op);
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static int foofs_readdir(am_node *mp, nfscookie cookie, nfsdirlist *dp, nfsentry *ep, int count);
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static am_node *foofs_readlink(am_node *mp, int *error_return);
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static void foofs_mounted(mntfs *mf);
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static void foofs_umounted(am_node *mp);
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fserver *foofs_ffserver(mntfs *mf);
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/*
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* Foofs operations.
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* Define only those you need, others set to 0 (NULL)
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*/
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am_ops foofs_ops =
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{
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"foofs", /* name of file system */
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foofs_match, /* match */
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foofs_init, /* initialize */
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foofs_mount, /* mount vnode */
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foofs_fmount, /* mount vfs */
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foofs_umount, /* unmount vnode */
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foofs_fumount, /* unmount VFS */
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foofs_lookuppn, /* lookup path-name */
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foofs_readdir, /* read directory */
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foofs_readlink, /* read link */
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foofs_mounted, /* after-mount extra actions */
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foofs_umounted, /* after-umount extra actions */
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foofs_ffserver, /* find a file server */
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FS_MKMNT | FS_BACKGROUND | FS_AMQINFO /* flags */
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};
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/*
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* Check that f/s has all needed fields.
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* Returns: matched string if found, NULL otherwise.
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*/
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static char *
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foofs_match(am_opts *fo)
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{
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char *cp = "fill this with a way to find the match";
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plog(XLOG_INFO, "entering foofs_match...");
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if (cp)
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return cp; /* OK */
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return NULL; /* not OK */
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}
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/*
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* Initialize.
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* Returns: 0 if OK, non-zero (errno) if failed.
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*/
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static int
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foofs_init(mntfs *mf)
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{
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int error = 0;
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plog(XLOG_INFO, "entering foofs_init...");
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error = EPERM; /* XXX: fixme */
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return error;
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}
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/*
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* Mount vnode.
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* Returns: 0 if OK, non-zero (errno) if failed.
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*/
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static int
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foofs_mount(am_node *mp)
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{
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int error = 0;
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plog(XLOG_INFO, "entering foofs_mount...");
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error = EPERM; /* XXX: fixme */
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return error;
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}
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/*
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* Mount vfs.
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* Returns: 0 if OK, non-zero (errno) if failed.
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*/
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static int
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foofs_fmount(mntfs *mf)
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{
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int error = 0;
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plog(XLOG_INFO, "entering foofs_fmount...");
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error = EPERM; /* XXX: fixme */
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return error;
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}
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/*
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* Unmount vnode.
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* Returns: 0 if OK, non-zero (errno) if failed.
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*/
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static int
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foofs_umount(am_node *mp)
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{
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int error = 0;
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plog(XLOG_INFO, "entering foofs_umount...");
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error = EPERM; /* XXX: fixme */
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return error;
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}
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/*
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* Unmount VFS.
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* Returns: 0 if OK, non-zero (errno) if failed.
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*/
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static int
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foofs_fumount(mntfs *mf)
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{
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int error = 0;
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plog(XLOG_INFO, "entering foofs_fumount...");
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error = EPERM; /* XXX: fixme */
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return error;
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}
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/*
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* Lookup path-name.
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* Returns: the am_node that was found, or NULL if failed.
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* If failed, also fills in errno in error_return.
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*/
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static am_node *
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foofs_lookuppn(am_node *mp, char *fname, int *error_return, int op)
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{
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int error = 0;
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plog(XLOG_INFO, "entering foofs_lookuppn...");
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error = EPERM; /* XXX: fixme */
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*error_return = error;
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return NULL;
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}
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/*
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* Read directory.
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* Returns: 0 if OK, non-zero (errno) if failed.
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* If OK, fills in ep with chain of directory entries.
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*/
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static int
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foofs_readdir(am_node *mp, nfscookie cookie, nfsdirlist *dp, nfsentry *ep, int count)
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{
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int error = 0;
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plog(XLOG_INFO, "entering foofs_readdir...");
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error = EPERM; /* XXX: fixme */
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return error;
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}
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/*
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* Read link.
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* Returns: am_node found, or NULL if not found.
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* If failed, fills in errno in error_return.
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*/
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static am_node *
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foofs_readlink(am_node *mp, int *error_return)
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{
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int error = 0;
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plog(XLOG_INFO, "entering foofs_readlink...");
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error = EPERM; /* XXX: fixme */
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*error_return = error;
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return NULL;
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}
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/*
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* Async mount callback function.
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* After the base mount went OK, sometimes
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* there are additional actions that are needed. See union_mounted() and
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* toplvl_mounted().
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*/
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static void
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foofs_mounted(mntfs *mf)
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{
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plog(XLOG_INFO, "entering foofs_mounted...");
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return;
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}
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/*
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* Async unmount callback function.
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* After the base umount() succeeds, we may want to take extra actions,
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* such as informing remote mount daemons that we've unmounted them.
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* See amfs_auto_umounted(), host_umounted(), nfs_umounted().
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*/
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static void
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foofs_umounted(am_node *mp)
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{
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plog(XLOG_INFO, "entering foofs_umounted...");
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return;
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}
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/*
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* Find a file server.
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* Returns: fserver of found server, or NULL if not found.
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*/
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fserver *
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foofs_ffserver(mntfs *mf)
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{
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plog(XLOG_INFO, "entering foofs_ffserver...");
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return NULL;
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}
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