/* $NetBSD: sysvbfs.c,v 1.19 2021/06/29 22:34:07 dholland Exp $ */

/* $NetBSD: sysvbfs.c,v 1.19 2021/06/29 22:34:07 dholland Exp $ */

/*-
* Copyright (c) 2004 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by UCHIYAMA Yasushi.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: sysvbfs.c,v 1.19 2021/06/29 22:34:07 dholland Exp $");

#include <sys/resource.h>
#include <sys/param.h>
#include <sys/vnode.h>
#include <sys/mount.h>
#include <sys/module.h>
#include <miscfs/genfs/genfs.h>
#include <miscfs/genfs/genfs_node.h>
#include <fs/sysvbfs/sysvbfs.h>

MODULE(MODULE_CLASS_VFS, sysvbfs, NULL);

/* External interfaces */

int (**sysvbfs_vnodeop_p)(void *); /* filled by getnewvnode (vnode.h) */

const struct vnodeopv_entry_desc sysvbfs_vnodeop_entries[] = {
{ &vop_default_desc, vn_default_error },
{ &vop_parsepath_desc, genfs_parsepath }, /* parsepath */
{ &vop_lookup_desc, sysvbfs_lookup }, /* lookup */
{ &vop_create_desc, sysvbfs_create }, /* create */
{ &vop_mknod_desc, genfs_eopnotsupp }, /* mknod */
{ &vop_open_desc, sysvbfs_open }, /* open */
{ &vop_close_desc, sysvbfs_close }, /* close */
{ &vop_access_desc, sysvbfs_access }, /* access */
{ &vop_accessx_desc, genfs_accessx }, /* accessx */
{ &vop_getattr_desc, sysvbfs_getattr }, /* getattr */
{ &vop_setattr_desc, sysvbfs_setattr }, /* setattr */
{ &vop_read_desc, sysvbfs_read }, /* read */
{ &vop_write_desc, sysvbfs_write }, /* write */
{ &vop_fallocate_desc, genfs_eopnotsupp }, /* fallocate */
{ &vop_fdiscard_desc, genfs_eopnotsupp }, /* fdiscard */
{ &vop_fcntl_desc, genfs_fcntl }, /* fcntl */
{ &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */
{ &vop_poll_desc, genfs_poll }, /* poll */
{ &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */
{ &vop_revoke_desc, genfs_revoke }, /* revoke */
{ &vop_mmap_desc, genfs_mmap }, /* mmap */
{ &vop_fsync_desc, sysvbfs_fsync }, /* fsync */
{ &vop_seek_desc, genfs_seek }, /* seek */
{ &vop_remove_desc, sysvbfs_remove }, /* remove */
{ &vop_link_desc, genfs_eopnotsupp }, /* link */
{ &vop_rename_desc, sysvbfs_rename }, /* rename */
{ &vop_mkdir_desc, genfs_eopnotsupp }, /* mkdir */
{ &vop_rmdir_desc, genfs_eopnotsupp }, /* rmdir */
{ &vop_symlink_desc, genfs_eopnotsupp }, /* symlink */
{ &vop_readdir_desc, sysvbfs_readdir }, /* readdir */
{ &vop_readlink_desc, genfs_eopnotsupp }, /* readlink */
{ &vop_abortop_desc, genfs_abortop }, /* abortop */
{ &vop_inactive_desc, sysvbfs_inactive }, /* inactive */
{ &vop_reclaim_desc, sysvbfs_reclaim }, /* reclaim */
{ &vop_lock_desc, genfs_lock }, /* lock */
{ &vop_unlock_desc, genfs_unlock }, /* unlock */
{ &vop_bmap_desc, sysvbfs_bmap }, /* bmap */
{ &vop_strategy_desc, sysvbfs_strategy }, /* strategy */
{ &vop_print_desc, sysvbfs_print }, /* print */
{ &vop_islocked_desc, genfs_islocked }, /* islocked */
{ &vop_pathconf_desc, sysvbfs_pathconf }, /* pathconf */
{ &vop_advlock_desc, sysvbfs_advlock }, /* advlock */
{ &vop_bwrite_desc, vn_bwrite }, /* bwrite */
{ &vop_getpages_desc, genfs_getpages }, /* getpages */
{ &vop_putpages_desc, genfs_putpages }, /* putpages */
{ NULL, NULL }
};

const struct vnodeopv_desc sysvbfs_vnodeop_opv_desc = {
&sysvbfs_vnodeop_p,
sysvbfs_vnodeop_entries
};

const struct vnodeopv_desc *sysvbfs_vnodeopv_descs[] = {
&sysvbfs_vnodeop_opv_desc,
NULL,
};

const struct genfs_ops sysvbfs_genfsops = {
.gop_size = genfs_size,
.gop_alloc = sysvbfs_gop_alloc,
.gop_write = genfs_gop_write,
.gop_putrange = genfs_gop_putrange,
};

struct vfsops sysvbfs_vfsops = {
.vfs_name = MOUNT_SYSVBFS,
.vfs_min_mount_data = sizeof (struct sysvbfs_args),
.vfs_mount = sysvbfs_mount,
.vfs_start = sysvbfs_start,
.vfs_unmount = sysvbfs_unmount,
.vfs_root = sysvbfs_root,
.vfs_quotactl = (void *)eopnotsupp,
.vfs_statvfs = sysvbfs_statvfs,
.vfs_sync = sysvbfs_sync,
.vfs_vget = sysvbfs_vget,
.vfs_loadvnode = sysvbfs_loadvnode,
.vfs_fhtovp = sysvbfs_fhtovp,
.vfs_vptofh = sysvbfs_vptofh,
.vfs_init = sysvbfs_init,
.vfs_reinit = sysvbfs_reinit,
.vfs_done = sysvbfs_done,
.vfs_snapshot = (void *)eopnotsupp,
.vfs_extattrctl = vfs_stdextattrctl,
.vfs_suspendctl = genfs_suspendctl,
.vfs_renamelock_enter = genfs_renamelock_enter,
.vfs_renamelock_exit = genfs_renamelock_exit,
.vfs_fsync = (void *)eopnotsupp,
.vfs_opv_descs = sysvbfs_vnodeopv_descs
};

static int
sysvbfs_modcmd(modcmd_t cmd, void *arg)
{

switch (cmd) {
case MODULE_CMD_INIT:
return vfs_attach(&sysvbfs_vfsops);
case MODULE_CMD_FINI:
return vfs_detach(&sysvbfs_vfsops);
default:
return ENOTTY;
}
}