1/*	$OpenBSD: vfs_init.c,v 1.44 2024/05/20 09:11:21 mvs Exp $	*/
2/*	$NetBSD: vfs_init.c,v 1.6 1996/02/09 19:00:58 christos Exp $	*/
3
4/*
5 * Copyright (c) 1989, 1993
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * This code is derived from software contributed
9 * to Berkeley by John Heidemann of the UCLA Ficus project.
10 *
11 * Source: * @(#)i405_init.c 2.10 92/04/27 UCLA Ficus project
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 *    notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 *    notice, this list of conditions and the following disclaimer in the
20 *    documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its contributors
22 *    may be used to endorse or promote products derived from this software
23 *    without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 *	@(#)vfs_init.c	8.3 (Berkeley) 1/4/94
38 */
39
40#include <sys/param.h>
41#include <sys/systm.h>
42#include <sys/mount.h>
43#include <sys/namei.h>
44#include <sys/vnode.h>
45#include <sys/pool.h>
46
47struct pool namei_pool;
48
49/* This defines the root filesystem. */
50struct vnode *rootvnode;
51
52/* Set up the filesystem operations for vnodes. */
53static struct vfsconf vfsconflist[] = {
54#ifdef FFS
55        { &ffs_vfsops, MOUNT_FFS, 1, 0, MNT_LOCAL | MNT_SWAPPABLE,
56	    sizeof(struct ufs_args) },
57#endif
58
59#ifdef MFS
60        { &mfs_vfsops, MOUNT_MFS, 3, 0, MNT_LOCAL,
61	    sizeof(struct mfs_args) },
62#endif
63
64#ifdef EXT2FS
65	{ &ext2fs_vfsops, MOUNT_EXT2FS, 17, 0, MNT_LOCAL | MNT_SWAPPABLE,
66	    sizeof(struct ufs_args) },
67#endif
68
69#ifdef CD9660
70        { &cd9660_vfsops, MOUNT_CD9660, 14, 0, MNT_LOCAL,
71	    sizeof(struct iso_args) },
72#endif
73
74#ifdef MSDOSFS
75        { &msdosfs_vfsops, MOUNT_MSDOS, 4, 0, MNT_LOCAL | MNT_SWAPPABLE,
76	    sizeof(struct msdosfs_args) },
77#endif
78
79#ifdef NFSCLIENT
80        { &nfs_vfsops, MOUNT_NFS, 2, 0, MNT_SWAPPABLE,
81	    sizeof(struct nfs_args) },
82#endif
83
84#ifdef NTFS
85	{ &ntfs_vfsops, MOUNT_NTFS, 6, 0, MNT_LOCAL,
86	    sizeof(struct ntfs_args) },
87#endif
88
89#ifdef UDF
90	{ &udf_vfsops, MOUNT_UDF, 13, 0, MNT_LOCAL,
91	    sizeof(struct iso_args) },
92#endif
93
94#ifdef FUSE
95	{ &fusefs_vfsops, MOUNT_FUSEFS, 18, 0, 0,
96	    sizeof(struct fusefs_args) },
97#endif
98
99#ifdef TMPFS
100	{ &tmpfs_vfsops, MOUNT_TMPFS, 19, 0, MNT_LOCAL,
101	    sizeof(struct tmpfs_args) },
102#endif
103};
104
105
106/*
107 * Initially the size of the list, vfsinit will set maxvfsconf
108 * to the highest defined type number.
109 */
110int maxvfsconf = sizeof(vfsconflist) / sizeof(struct vfsconf);
111
112/* Initialize the vnode structures and initialize each file system type. */
113void
114vfsinit(void)
115{
116	struct vfsconf *vfsp;
117	int i;
118
119	pool_init(&namei_pool, MAXPATHLEN, 0, IPL_NONE, PR_WAITOK, "namei",
120	    NULL);
121
122	/* Initialize the vnode table. */
123	vntblinit();
124
125	/* Initialize the vnode name cache. */
126	nchinit();
127
128	maxvfsconf = 0;
129	for (i = 0; i < nitems(vfsconflist); i++) {
130		vfsp = &vfsconflist[i];
131		if (vfsp->vfc_typenum > maxvfsconf)
132			maxvfsconf = vfsp->vfc_typenum;
133		if (vfsp->vfc_vfsops->vfs_init != NULL)
134			(*vfsp->vfc_vfsops->vfs_init)(vfsp);
135	}
136}
137
138struct vfsconf *
139vfs_byname(const char *name)
140{
141	int i;
142
143	for (i = 0; i < nitems(vfsconflist); i++) {
144		if (strcmp(vfsconflist[i].vfc_name, name) == 0)
145			return &vfsconflist[i];
146	}
147	return NULL;
148}
149
150struct vfsconf *
151vfs_bytypenum(int typenum)
152{
153	int i;
154
155	for (i = 0; i < nitems(vfsconflist); i++) {
156		if (vfsconflist[i].vfc_typenum == typenum)
157			return &vfsconflist[i];
158	}
159	return NULL;
160}
161