1/*
2 * Copyright (c) 2000-2014 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
29/*
30 * Copyright (c) 1989, 1993, 1995
31 *	The Regents of the University of California.  All rights reserved.
32 *
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
35 * are met:
36 * 1. Redistributions of source code must retain the above copyright
37 *    notice, this list of conditions and the following disclaimer.
38 * 2. Redistributions in binary form must reproduce the above copyright
39 *    notice, this list of conditions and the following disclaimer in the
40 *    documentation and/or other materials provided with the distribution.
41 * 3. All advertising materials mentioning features or use of this software
42 *    must display the following acknowledgement:
43 *	This product includes software developed by the University of
44 *	California, Berkeley and its contributors.
45 * 4. Neither the name of the University nor the names of its contributors
46 *    may be used to endorse or promote products derived from this software
47 *    without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59 * SUCH DAMAGE.
60 *
61 *	@(#)vfs_conf.c	8.11 (Berkeley) 5/10/95
62 */
63/*
64 * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce
65 * support for mandatory and extensible security protections.  This notice
66 * is included in support of clause 2.2 (b) of the Apple Public License,
67 * Version 2.0.
68 */
69
70#include <sys/param.h>
71#include <sys/systm.h>
72#include <sys/mount_internal.h>
73#include <sys/vnode_internal.h>
74
75/*
76 * These define the root filesystem, device, and root filesystem type.
77 */
78struct mount *rootfs;
79struct vnode *rootvnode;
80
81#ifdef CONFIG_IMGSRC_ACCESS
82struct vnode *imgsrc_rootvnodes[MAX_IMAGEBOOT_NESTING];	/* [0] -> source volume, [1] -> first disk image */
83#endif /* CONFIG_IMGSRC_ACCESS */
84
85int (*mountroot)(void) = NULL;
86
87/*
88 * Set up the initial array of known filesystem types.
89 */
90extern	struct vfsops mfs_vfsops;
91extern	int mfs_mountroot(mount_t, vnode_t, vfs_context_t);	/* dead */
92extern  struct vfsops hfs_vfsops;
93extern	int hfs_mountroot(mount_t, vnode_t, vfs_context_t);
94extern	struct vfsops nfs_vfsops;
95extern	int nfs_mountroot(void);
96extern	struct vfsops afs_vfsops;
97extern	struct vfsops null_vfsops;
98extern	struct vfsops devfs_vfsops;
99
100#if MOCKFS
101extern	struct vfsops mockfs_vfsops;
102extern	int mockfs_mountroot(mount_t, vnode_t, vfs_context_t);
103#endif /* MOCKFS */
104
105/*
106 * For nfs_mountroot(void) cast.  nfs_mountroot ignores its parameters, if
107 * invoked through this table.
108 */
109typedef int (*mountroot_t)(mount_t, vnode_t, vfs_context_t);
110
111enum fs_type_num {
112	FT_NFS = 2,
113	FT_HFS = 17,
114	FT_DEVFS = 19,
115	FT_SYNTHFS = 20,
116	FT_MOCKFS  = 0x6D6F636B
117};
118
119/*
120 * Set up the filesystem operations for vnodes.
121 */
122static struct vfstable vfstbllist[] = {
123	/* HFS/HFS+ Filesystem */
124#if HFS
125	{ &hfs_vfsops, "hfs", FT_HFS, 0, (MNT_LOCAL | MNT_DOVOLFS), hfs_mountroot, NULL, 0, 0, VFC_VFSLOCALARGS | VFC_VFSREADDIR_EXTENDED | VFC_VFS64BITREADY | VFC_VFSVNOP_PAGEOUTV2 | VFC_VFSVNOP_PAGEINV2
126#if CONFIG_SECLUDED_RENAME
127	| VFC_VFSVNOP_SECLUDE_RENAME
128#endif
129	, NULL, 0, NULL},
130#endif
131
132	/* Sun-compatible Network Filesystem */
133#if NFSCLIENT
134	{ &nfs_vfsops, "nfs", FT_NFS, 0, 0, NULL, NULL, 0, 0, VFC_VFSGENERICARGS | VFC_VFSPREFLIGHT | VFC_VFS64BITREADY | VFC_VFSREADDIR_EXTENDED, NULL, 0, NULL},
135#endif
136
137	/* Device Filesystem */
138#if DEVFS
139#if CONFIG_MACF
140	{ &devfs_vfsops, "devfs", FT_DEVFS, 0, MNT_MULTILABEL, NULL, NULL, 0, 0, VFC_VFSGENERICARGS | VFC_VFS64BITREADY, NULL, 0, NULL},
141#else
142	{ &devfs_vfsops, "devfs", FT_DEVFS, 0, 0, NULL, NULL, 0, 0, VFC_VFSGENERICARGS | VFC_VFS64BITREADY, NULL, 0, NULL},
143#endif /* MAC */
144#endif
145
146#ifndef __LP64__
147#endif /* __LP64__ */
148
149#if MOCKFS
150	/* If we are configured for it, mockfs should always be the last standard entry (and thus the last FS we attempt mountroot with) */
151	{ &mockfs_vfsops, "mockfs", FT_MOCKFS, 0, MNT_LOCAL, mockfs_mountroot, NULL, 0, 0, VFC_VFSGENERICARGS, NULL, 0, NULL},
152#endif /* MOCKFS */
153
154	{NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, 0, 0, NULL, 0, NULL},
155	{NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, 0, 0, NULL, 0, NULL},
156};
157
158/*
159 * vfs_init will set maxvfstypenum to the highest defined type number.
160 */
161const int maxvfsslots = sizeof(vfstbllist) / sizeof (struct vfstable);
162int numused_vfsslots = 0;
163int numregistered_fses = 0;
164int maxvfstypenum = VT_NON + 1;
165struct vfstable *vfsconf = vfstbllist;
166
167/*
168 *
169 * vfs_opv_descs enumerates the list of vnode classes, each with it's own
170 * vnode operation vector.  It is consulted at system boot to build operation
171 * vectors.  It is NULL terminated.
172 *
173 */
174extern struct vnodeopv_desc mfs_vnodeop_opv_desc;
175extern struct vnodeopv_desc dead_vnodeop_opv_desc;
176#if FIFO && SOCKETS
177extern struct vnodeopv_desc fifo_vnodeop_opv_desc;
178#endif /* SOCKETS */
179extern struct vnodeopv_desc spec_vnodeop_opv_desc;
180extern struct vnodeopv_desc nfsv2_vnodeop_opv_desc;
181extern struct vnodeopv_desc spec_nfsv2nodeop_opv_desc;
182extern struct vnodeopv_desc fifo_nfsv2nodeop_opv_desc;
183extern struct vnodeopv_desc nfsv4_vnodeop_opv_desc;
184extern struct vnodeopv_desc spec_nfsv4nodeop_opv_desc;
185extern struct vnodeopv_desc fifo_nfsv4nodeop_opv_desc;
186extern struct vnodeopv_desc null_vnodeop_opv_desc;
187extern struct vnodeopv_desc hfs_vnodeop_opv_desc;
188#if CONFIG_HFS_STD
189extern struct vnodeopv_desc hfs_std_vnodeop_opv_desc;
190#endif
191extern struct vnodeopv_desc hfs_specop_opv_desc;
192extern struct vnodeopv_desc hfs_fifoop_opv_desc;
193extern struct vnodeopv_desc devfs_vnodeop_opv_desc;
194extern struct vnodeopv_desc devfs_spec_vnodeop_opv_desc;
195#if FDESC
196extern struct vnodeopv_desc devfs_devfd_vnodeop_opv_desc;
197extern struct vnodeopv_desc devfs_fdesc_vnodeop_opv_desc;
198#endif /* FDESC */
199
200#if MOCKFS
201extern struct vnodeopv_desc mockfs_vnodeop_opv_desc;
202#endif /* MOCKFS */
203
204struct vnodeopv_desc *vfs_opv_descs[] = {
205	&dead_vnodeop_opv_desc,
206#if FIFO && SOCKETS
207	&fifo_vnodeop_opv_desc,
208#endif
209	&spec_vnodeop_opv_desc,
210#if MFS
211	&mfs_vnodeop_opv_desc,
212#endif
213#if NFSCLIENT
214	&nfsv2_vnodeop_opv_desc,
215	&spec_nfsv2nodeop_opv_desc,
216	&nfsv4_vnodeop_opv_desc,
217	&spec_nfsv4nodeop_opv_desc,
218#if FIFO
219	&fifo_nfsv2nodeop_opv_desc,
220	&fifo_nfsv4nodeop_opv_desc,
221#endif
222#endif
223#if HFS
224	&hfs_vnodeop_opv_desc,
225#if CONFIG_HFS_STD
226	&hfs_std_vnodeop_opv_desc,
227#endif
228	&hfs_specop_opv_desc,
229#if FIFO
230	&hfs_fifoop_opv_desc,
231#endif
232#endif
233#if DEVFS
234	&devfs_vnodeop_opv_desc,
235	&devfs_spec_vnodeop_opv_desc,
236#if FDESC
237	&devfs_devfd_vnodeop_opv_desc,
238	&devfs_fdesc_vnodeop_opv_desc,
239#endif /* FDESC */
240#endif /* DEVFS */
241#if MOCKFS
242	&mockfs_vnodeop_opv_desc,
243#endif /* MOCKFS */
244	NULL
245};
246