1 /* $NetBSD: sysvbfs.c,v 1.19 2021/06/29 22:34:07 dholland Exp $ */
2
3 /*-
4 * Copyright (c) 2004 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by UCHIYAMA Yasushi.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: sysvbfs.c,v 1.19 2021/06/29 22:34:07 dholland Exp $");
34
35 #include <sys/resource.h>
36 #include <sys/param.h>
37 #include <sys/vnode.h>
38 #include <sys/mount.h>
39 #include <sys/module.h>
40 #include <miscfs/genfs/genfs.h>
41 #include <miscfs/genfs/genfs_node.h>
42 #include <fs/sysvbfs/sysvbfs.h>
43
44 MODULE(MODULE_CLASS_VFS, sysvbfs, NULL);
45
46 /* External interfaces */
47
48 int (**sysvbfs_vnodeop_p)(void *); /* filled by getnewvnode (vnode.h) */
49
50 const struct vnodeopv_entry_desc sysvbfs_vnodeop_entries[] = {
51 { &vop_default_desc, vn_default_error },
52 { &vop_parsepath_desc, genfs_parsepath }, /* parsepath */
53 { &vop_lookup_desc, sysvbfs_lookup }, /* lookup */
54 { &vop_create_desc, sysvbfs_create }, /* create */
55 { &vop_mknod_desc, genfs_eopnotsupp }, /* mknod */
56 { &vop_open_desc, sysvbfs_open }, /* open */
57 { &vop_close_desc, sysvbfs_close }, /* close */
58 { &vop_access_desc, sysvbfs_access }, /* access */
59 { &vop_accessx_desc, genfs_accessx }, /* accessx */
60 { &vop_getattr_desc, sysvbfs_getattr }, /* getattr */
61 { &vop_setattr_desc, sysvbfs_setattr }, /* setattr */
62 { &vop_read_desc, sysvbfs_read }, /* read */
63 { &vop_write_desc, sysvbfs_write }, /* write */
64 { &vop_fallocate_desc, genfs_eopnotsupp }, /* fallocate */
65 { &vop_fdiscard_desc, genfs_eopnotsupp }, /* fdiscard */
66 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */
67 { &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */
68 { &vop_poll_desc, genfs_poll }, /* poll */
69 { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */
70 { &vop_revoke_desc, genfs_revoke }, /* revoke */
71 { &vop_mmap_desc, genfs_mmap }, /* mmap */
72 { &vop_fsync_desc, sysvbfs_fsync }, /* fsync */
73 { &vop_seek_desc, genfs_seek }, /* seek */
74 { &vop_remove_desc, sysvbfs_remove }, /* remove */
75 { &vop_link_desc, genfs_eopnotsupp }, /* link */
76 { &vop_rename_desc, sysvbfs_rename }, /* rename */
77 { &vop_mkdir_desc, genfs_eopnotsupp }, /* mkdir */
78 { &vop_rmdir_desc, genfs_eopnotsupp }, /* rmdir */
79 { &vop_symlink_desc, genfs_eopnotsupp }, /* symlink */
80 { &vop_readdir_desc, sysvbfs_readdir }, /* readdir */
81 { &vop_readlink_desc, genfs_eopnotsupp }, /* readlink */
82 { &vop_abortop_desc, genfs_abortop }, /* abortop */
83 { &vop_inactive_desc, sysvbfs_inactive }, /* inactive */
84 { &vop_reclaim_desc, sysvbfs_reclaim }, /* reclaim */
85 { &vop_lock_desc, genfs_lock }, /* lock */
86 { &vop_unlock_desc, genfs_unlock }, /* unlock */
87 { &vop_bmap_desc, sysvbfs_bmap }, /* bmap */
88 { &vop_strategy_desc, sysvbfs_strategy }, /* strategy */
89 { &vop_print_desc, sysvbfs_print }, /* print */
90 { &vop_islocked_desc, genfs_islocked }, /* islocked */
91 { &vop_pathconf_desc, sysvbfs_pathconf }, /* pathconf */
92 { &vop_advlock_desc, sysvbfs_advlock }, /* advlock */
93 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */
94 { &vop_getpages_desc, genfs_getpages }, /* getpages */
95 { &vop_putpages_desc, genfs_putpages }, /* putpages */
96 { NULL, NULL }
97 };
98
99 const struct vnodeopv_desc sysvbfs_vnodeop_opv_desc = {
100 &sysvbfs_vnodeop_p,
101 sysvbfs_vnodeop_entries
102 };
103
104 const struct vnodeopv_desc *sysvbfs_vnodeopv_descs[] = {
105 &sysvbfs_vnodeop_opv_desc,
106 NULL,
107 };
108
109 const struct genfs_ops sysvbfs_genfsops = {
110 .gop_size = genfs_size,
111 .gop_alloc = sysvbfs_gop_alloc,
112 .gop_write = genfs_gop_write,
113 .gop_putrange = genfs_gop_putrange,
114 };
115
116 struct vfsops sysvbfs_vfsops = {
117 .vfs_name = MOUNT_SYSVBFS,
118 .vfs_min_mount_data = sizeof (struct sysvbfs_args),
119 .vfs_mount = sysvbfs_mount,
120 .vfs_start = sysvbfs_start,
121 .vfs_unmount = sysvbfs_unmount,
122 .vfs_root = sysvbfs_root,
123 .vfs_quotactl = (void *)eopnotsupp,
124 .vfs_statvfs = sysvbfs_statvfs,
125 .vfs_sync = sysvbfs_sync,
126 .vfs_vget = sysvbfs_vget,
127 .vfs_loadvnode = sysvbfs_loadvnode,
128 .vfs_fhtovp = sysvbfs_fhtovp,
129 .vfs_vptofh = sysvbfs_vptofh,
130 .vfs_init = sysvbfs_init,
131 .vfs_reinit = sysvbfs_reinit,
132 .vfs_done = sysvbfs_done,
133 .vfs_snapshot = (void *)eopnotsupp,
134 .vfs_extattrctl = vfs_stdextattrctl,
135 .vfs_suspendctl = genfs_suspendctl,
136 .vfs_renamelock_enter = genfs_renamelock_enter,
137 .vfs_renamelock_exit = genfs_renamelock_exit,
138 .vfs_fsync = (void *)eopnotsupp,
139 .vfs_opv_descs = sysvbfs_vnodeopv_descs
140 };
141
142 static int
sysvbfs_modcmd(modcmd_t cmd,void * arg)143 sysvbfs_modcmd(modcmd_t cmd, void *arg)
144 {
145
146 switch (cmd) {
147 case MODULE_CMD_INIT:
148 return vfs_attach(&sysvbfs_vfsops);
149 case MODULE_CMD_FINI:
150 return vfs_detach(&sysvbfs_vfsops);
151 default:
152 return ENOTTY;
153 }
154 }
155