[apple/xnu.git] / bsd / vfs / vfs_conf.c

/*
 * Copyright (c) 2000-2019 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 *
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
/*
 * Copyright (c) 1989, 1993, 1995
 *	The Regents of the University of California.  All rights reserved.
 *
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
 *
 *	@(#)vfs_conf.c	8.11 (Berkeley) 5/10/95
 */
/*
 * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce
 * support for mandatory and extensible security protections.  This notice
 * is included in support of clause 2.2 (b) of the Apple Public License,
 * Version 2.0.
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mount_internal.h>
#include <sys/vnode_internal.h>

/*
 * These define the root filesystem, device, and root filesystem type.
 */
struct mount *rootfs;
struct vnode *rootvnode;

#ifdef CONFIG_IMGSRC_ACCESS
struct vnode *imgsrc_rootvnodes[MAX_IMAGEBOOT_NESTING]; /* [0] -> source volume, [1] -> first disk image */
#endif /* CONFIG_IMGSRC_ACCESS */

int (*mountroot)(void) = NULL;

/*
 * Set up the initial array of known filesystem types.
 */
extern  struct vfsops mfs_vfsops;
extern  int mfs_mountroot(mount_t, vnode_t, vfs_context_t);     /* dead */
extern  struct vfsops nfs_vfsops;
extern  int nfs_mountroot(void);
extern  struct vfsops afs_vfsops;
extern  struct vfsops null_vfsops;
extern  struct vfsops devfs_vfsops;
extern  const struct vfsops routefs_vfsops;
extern  struct vfsops nullfs_vfsops;

#if MOCKFS
extern  struct vfsops mockfs_vfsops;
extern  int mockfs_mountroot(mount_t, vnode_t, vfs_context_t);
#endif /* MOCKFS */

/*
 * For nfs_mountroot(void) cast.  nfs_mountroot ignores its parameters, if
 * invoked through this table.
 */
typedef int (*mountroot_t)(mount_t, vnode_t, vfs_context_t);

enum fs_type_num {
	FT_NFS = 2,
	FT_DEVFS = 19,
	FT_SYNTHFS = 20,
	FT_ROUTEFS = 21,
	FT_NULLFS = 22,
	FT_MOCKFS  = 0x6D6F636B
};

/*
 * Set up the filesystem operations for vnodes.
 */
static struct vfstable vfstbllist[] = {
	/* Sun-compatible Network Filesystem */
#if NFSCLIENT
	{
		.vfc_vfsops = &nfs_vfsops,
		.vfc_name = "nfs",
		.vfc_typenum = FT_NFS,
		.vfc_refcount = 0,
		.vfc_flags = 0,
		.vfc_mountroot = NULL,
		.vfc_next = NULL,
		.vfc_reserved1 = 0,
		.vfc_reserved2 = 0,
		.vfc_vfsflags = VFC_VFSGENERICARGS | VFC_VFSPREFLIGHT | VFC_VFS64BITREADY | VFC_VFSREADDIR_EXTENDED,
		.vfc_descptr = NULL,
		.vfc_descsize = 0,
		.vfc_sysctl = NULL
	},
#endif /* NFSCLIENT */

	/* Device Filesystem */
#if DEVFS
#if CONFIG_MACF
	{
		.vfc_vfsops = &devfs_vfsops,
		.vfc_name = "devfs",
		.vfc_typenum = FT_DEVFS,
		.vfc_refcount = 0,
		.vfc_flags = MNT_MULTILABEL,
		.vfc_mountroot = NULL,
		.vfc_next = NULL,
		.vfc_reserved1 = 0,
		.vfc_reserved2 = 0,
		.vfc_vfsflags = VFC_VFSGENERICARGS | VFC_VFS64BITREADY,
		.vfc_descptr = NULL,
		.vfc_descsize = 0,
		.vfc_sysctl = NULL
	},
#else /* !CONFIG_MAC */
	{
		.vfc_vfsops = &devfs_vfsops,
		.vfc_name = "devfs",
		.vfc_typenum = FT_DEVFS,
		.vfc_refcount = 0,
		.vfc_flags = 0,
		.vfc_mountroot = NULL,
		.vfc_next = NULL,
		.vfc_reserved1 = 0,
		.vfc_reserved2 = 0,
		.vfc_vfsflags = VFC_VFSGENERICARGS | VFC_VFS64BITREADY,
		.vfc_descptr = NULL,
		.vfc_descsize = 0,
		.vfc_sysctl = NULL
	},
#endif /* CONFIG_MAC */
#endif /* DEVFS */

#ifndef __LP64__
#endif /* __LP64__ */

#if NULLFS
	{
		.vfc_vfsops = &nullfs_vfsops,
		.vfc_name = "nullfs",
		.vfc_typenum = FT_NULLFS,
		.vfc_refcount = 0,
		.vfc_flags = MNT_DONTBROWSE | MNT_RDONLY,
		.vfc_mountroot = NULL,
		.vfc_next = NULL,
		.vfc_reserved1 = 0,
		.vfc_reserved2 = 0,
		.vfc_vfsflags = VFC_VFS64BITREADY,
		.vfc_descptr = NULL,
		.vfc_descsize = 0,
		.vfc_sysctl = NULL
	},
#endif /* NULLFS */

#if MOCKFS
	/* If we are configured for it, mockfs should always be the last standard entry (and thus the last FS we attempt mountroot with) */
	{
		.vfc_vfsops = &mockfs_vfsops,
		.vfc_name = "mockfs",
		.vfc_typenum = FT_MOCKFS,
		.vfc_refcount = 0,
		.vfc_flags = MNT_LOCAL,
		.vfc_mountroot = mockfs_mountroot,
		.vfc_next = NULL,
		.vfc_reserved1 = 0,
		.vfc_reserved2 = 0,
		.vfc_vfsflags = VFC_VFSGENERICARGS,
		.vfc_descptr = NULL,
		.vfc_descsize = 0,
		.vfc_sysctl = NULL
	},
#endif /* MOCKFS */

#if ROUTEFS
	/* If we are configured for it, mockfs should always be the last standard entry (and thus the last FS we attempt mountroot with) */
	{
		.vfc_vfsops = &routefs_vfsops,
		.vfc_name = "routefs",
		.vfc_typenum = FT_ROUTEFS,
		.vfc_refcount = 0,
		.vfc_flags = MNT_LOCAL,
		.vfc_mountroot = NULL,
		.vfc_next = NULL,
		.vfc_reserved1 = 0,
		.vfc_reserved2 = 0,
		.vfc_vfsflags = VFC_VFSGENERICARGS | VFC_VFS64BITREADY,
		.vfc_descptr = NULL,
		.vfc_descsize = 0,
		.vfc_sysctl = NULL
	},
#endif /* ROUTEFS */

	{
		.vfc_vfsops = NULL,
		.vfc_name = "<unassigned>",
		.vfc_typenum = 0,
		.vfc_refcount = 0,
		.vfc_flags = 0,
		.vfc_mountroot = NULL,
		.vfc_next = NULL,
		.vfc_reserved1 = 0,
		.vfc_reserved2 = 0,
		.vfc_vfsflags = 0,
		.vfc_descptr = NULL,
		.vfc_descsize = 0,
		.vfc_sysctl = NULL
	},
	{
		.vfc_vfsops = NULL,
		.vfc_name = "<unassigned>",
		.vfc_typenum = 0,
		.vfc_refcount = 0,
		.vfc_flags = 0,
		.vfc_mountroot = NULL,
		.vfc_next = NULL,
		.vfc_reserved1 = 0,
		.vfc_reserved2 = 0,
		.vfc_vfsflags = 0,
		.vfc_descptr = NULL,
		.vfc_descsize = 0,
		.vfc_sysctl = NULL
	},
};

/*
 * vfs_init will set maxvfstypenum to the highest defined type number.
 */
const int maxvfsslots = sizeof(vfstbllist) / sizeof(struct vfstable);
int numused_vfsslots = 0;
int numregistered_fses = 0;
int maxvfstypenum = VT_NON + 1;
struct vfstable *vfsconf = vfstbllist;

/*
 *
 * vfs_opv_descs enumerates the list of vnode classes, each with it's own
 * vnode operation vector.  It is consulted at system boot to build operation
 * vectors.  It is NULL terminated.
 *
 */
extern struct vnodeopv_desc mfs_vnodeop_opv_desc;
extern const struct vnodeopv_desc dead_vnodeop_opv_desc;
#if FIFO && SOCKETS
extern const struct vnodeopv_desc fifo_vnodeop_opv_desc;
#endif /* SOCKETS */
extern const struct vnodeopv_desc spec_vnodeop_opv_desc;
extern const struct vnodeopv_desc nfsv2_vnodeop_opv_desc;
extern const struct vnodeopv_desc spec_nfsv2nodeop_opv_desc;
extern const struct vnodeopv_desc fifo_nfsv2nodeop_opv_desc;
#if CONFIG_NFS4
extern const struct vnodeopv_desc nfsv4_vnodeop_opv_desc;
extern const struct vnodeopv_desc spec_nfsv4nodeop_opv_desc;
extern const struct vnodeopv_desc fifo_nfsv4nodeop_opv_desc;
#endif
extern struct vnodeopv_desc null_vnodeop_opv_desc;
extern struct vnodeopv_desc devfs_vnodeop_opv_desc;
extern struct vnodeopv_desc devfs_spec_vnodeop_opv_desc;
#if FDESC
extern struct vnodeopv_desc devfs_devfd_vnodeop_opv_desc;
extern const struct vnodeopv_desc devfs_fdesc_vnodeop_opv_desc;
#endif /* FDESC */

#if MOCKFS
extern const struct vnodeopv_desc mockfs_vnodeop_opv_desc;
#endif /* MOCKFS */

extern const struct vnodeopv_desc nullfs_vnodeop_opv_desc;

const struct vnodeopv_desc *vfs_opv_descs[] = {
	&dead_vnodeop_opv_desc,
#if FIFO && SOCKETS
	&fifo_vnodeop_opv_desc,
#endif
	&spec_vnodeop_opv_desc,
#if MFS
	&mfs_vnodeop_opv_desc,
#endif
#if NFSCLIENT
	&nfsv2_vnodeop_opv_desc,
	&spec_nfsv2nodeop_opv_desc,
#if CONFIG_NFS4
	&nfsv4_vnodeop_opv_desc,
	&spec_nfsv4nodeop_opv_desc,
#endif
#if FIFO
	&fifo_nfsv2nodeop_opv_desc,
#if CONFIG_NFS4
	&fifo_nfsv4nodeop_opv_desc,
#endif /* CONFIG_NFS4 */
#endif /* FIFO */
#endif /* NFSCLIENT */
#if DEVFS
	&devfs_vnodeop_opv_desc,
	&devfs_spec_vnodeop_opv_desc,
#if FDESC
	&devfs_devfd_vnodeop_opv_desc,
	&devfs_fdesc_vnodeop_opv_desc,
#endif /* FDESC */
#endif /* DEVFS */
#if NULLFS
	&nullfs_vnodeop_opv_desc,
#endif /* NULLFS */
#if MOCKFS
	&mockfs_vnodeop_opv_desc,
#endif /* MOCKFS */
	NULL
};
Commit	Line	Data
1c79356b	1	/*
cb323159	2	* Copyright (c) 2000-2019 Apple Inc. All rights reserved.
5d5c5d0d	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
0a7de745	5	*
2d21ac55 A	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.
0a7de745	14	*
2d21ac55 A	15	* Please obtain a copy of the License at
2d21ac55 A	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
0a7de745	17	*
2d21ac55 A	18	* The Original Code and all software distributed under the License are
2d21ac55 A	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	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.
0a7de745	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	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	*/
2d21ac55 A	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	*/
1c79356b A	69
	70	#include <sys/param.h>
	71	#include <sys/systm.h>
91447636 A	72	#include <sys/mount_internal.h>
91447636 A	73	#include <sys/vnode_internal.h>
1c79356b A	74
	75	/*
	76	* These define the root filesystem, device, and root filesystem type.
	77	*/
	78	struct mount *rootfs;
	79	struct vnode *rootvnode;
b7266188 A	80
b7266188 A	81	#ifdef CONFIG_IMGSRC_ACCESS
0a7de745	82	struct vnode imgsrc_rootvnodes[MAX_IMAGEBOOT_NESTING]; / [0] -> source volume, [1] -> first disk image */
6d2010ae	83	#endif /* CONFIG_IMGSRC_ACCESS */
b7266188	84
2d21ac55	85	int (*mountroot)(void) = NULL;
1c79356b A	86
	87	/*
	88	* Set up the initial array of known filesystem types.
	89	*/
0a7de745 A	90	extern struct vfsops mfs_vfsops;
	91	extern int mfs_mountroot(mount_t, vnode_t, vfs_context_t); /* dead */
	92	extern struct vfsops nfs_vfsops;
	93	extern int nfs_mountroot(void);
	94	extern struct vfsops afs_vfsops;
	95	extern struct vfsops null_vfsops;
	96	extern struct vfsops devfs_vfsops;
cb323159	97	extern const struct vfsops routefs_vfsops;
39037602	98	extern struct vfsops nullfs_vfsops;
1c79356b	99
39236c6e	100	#if MOCKFS
0a7de745 A	101	extern struct vfsops mockfs_vfsops;
0a7de745 A	102	extern int mockfs_mountroot(mount_t, vnode_t, vfs_context_t);
39236c6e A	103	#endif /* MOCKFS */
39236c6e A	104
2d21ac55 A	105	/*
	106	* For nfs_mountroot(void) cast. nfs_mountroot ignores its parameters, if
	107	* invoked through this table.
	108	*/
	109	typedef int (*mountroot_t)(mount_t, vnode_t, vfs_context_t);
	110
fe8ab488 A	111	enum fs_type_num {
fe8ab488 A	112	FT_NFS = 2,
fe8ab488 A	113	FT_DEVFS = 19,
fe8ab488 A	114	FT_SYNTHFS = 20,
490019cf	115	FT_ROUTEFS = 21,
39037602	116	FT_NULLFS = 22,
fe8ab488 A	117	FT_MOCKFS = 0x6D6F636B
	118	};
	119
1c79356b A	120	/*
	121	* Set up the filesystem operations for vnodes.
	122	*/
6601e61a	123	static struct vfstable vfstbllist[] = {
1c79356b A	124	/* Sun-compatible Network Filesystem */
1c79356b A	125	#if NFSCLIENT
cb323159 A	126	{
	127	.vfc_vfsops = &nfs_vfsops,
	128	.vfc_name = "nfs",
	129	.vfc_typenum = FT_NFS,
	130	.vfc_refcount = 0,
	131	.vfc_flags = 0,
	132	.vfc_mountroot = NULL,
	133	.vfc_next = NULL,
	134	.vfc_reserved1 = 0,
	135	.vfc_reserved2 = 0,
	136	.vfc_vfsflags = VFC_VFSGENERICARGS \| VFC_VFSPREFLIGHT \| VFC_VFS64BITREADY \| VFC_VFSREADDIR_EXTENDED,
	137	.vfc_descptr = NULL,
	138	.vfc_descsize = 0,
	139	.vfc_sysctl = NULL
	140	},
	141	#endif /* NFSCLIENT */
1c79356b	142
1c79356b A	143	/* Device Filesystem */
1c79356b A	144	#if DEVFS
2d21ac55	145	#if CONFIG_MACF
cb323159 A	146	{
	147	.vfc_vfsops = &devfs_vfsops,
	148	.vfc_name = "devfs",
	149	.vfc_typenum = FT_DEVFS,
	150	.vfc_refcount = 0,
	151	.vfc_flags = MNT_MULTILABEL,
	152	.vfc_mountroot = NULL,
	153	.vfc_next = NULL,
	154	.vfc_reserved1 = 0,
	155	.vfc_reserved2 = 0,
	156	.vfc_vfsflags = VFC_VFSGENERICARGS \| VFC_VFS64BITREADY,
	157	.vfc_descptr = NULL,
	158	.vfc_descsize = 0,
	159	.vfc_sysctl = NULL
	160	},
	161	#else /* !CONFIG_MAC */
	162	{
	163	.vfc_vfsops = &devfs_vfsops,
	164	.vfc_name = "devfs",
	165	.vfc_typenum = FT_DEVFS,
	166	.vfc_refcount = 0,
	167	.vfc_flags = 0,
	168	.vfc_mountroot = NULL,
	169	.vfc_next = NULL,
	170	.vfc_reserved1 = 0,
	171	.vfc_reserved2 = 0,
	172	.vfc_vfsflags = VFC_VFSGENERICARGS \| VFC_VFS64BITREADY,
	173	.vfc_descptr = NULL,
	174	.vfc_descsize = 0,
	175	.vfc_sysctl = NULL
	176	},
	177	#endif /* CONFIG_MAC */
	178	#endif /* DEVFS */
9bccf70c	179
b0d623f7 A	180	#ifndef __LP64__
b0d623f7 A	181	#endif /* __LP64__ */
2d21ac55	182
39037602	183	#if NULLFS
cb323159 A	184	{
	185	.vfc_vfsops = &nullfs_vfsops,
	186	.vfc_name = "nullfs",
	187	.vfc_typenum = FT_NULLFS,
	188	.vfc_refcount = 0,
	189	.vfc_flags = MNT_DONTBROWSE \| MNT_RDONLY,
	190	.vfc_mountroot = NULL,
	191	.vfc_next = NULL,
	192	.vfc_reserved1 = 0,
	193	.vfc_reserved2 = 0,
	194	.vfc_vfsflags = VFC_VFS64BITREADY,
	195	.vfc_descptr = NULL,
	196	.vfc_descsize = 0,
	197	.vfc_sysctl = NULL
	198	},
39037602 A	199	#endif /* NULLFS */
39037602 A	200
39236c6e A	201	#if MOCKFS
39236c6e A	202	/* If we are configured for it, mockfs should always be the last standard entry (and thus the last FS we attempt mountroot with) */
cb323159 A	203	{
	204	.vfc_vfsops = &mockfs_vfsops,
	205	.vfc_name = "mockfs",
	206	.vfc_typenum = FT_MOCKFS,
	207	.vfc_refcount = 0,
	208	.vfc_flags = MNT_LOCAL,
	209	.vfc_mountroot = mockfs_mountroot,
	210	.vfc_next = NULL,
	211	.vfc_reserved1 = 0,
	212	.vfc_reserved2 = 0,
	213	.vfc_vfsflags = VFC_VFSGENERICARGS,
	214	.vfc_descptr = NULL,
	215	.vfc_descsize = 0,
	216	.vfc_sysctl = NULL
	217	},
39236c6e A	218	#endif /* MOCKFS */
39236c6e A	219
490019cf A	220	#if ROUTEFS
490019cf A	221	/* If we are configured for it, mockfs should always be the last standard entry (and thus the last FS we attempt mountroot with) */
cb323159 A	222	{
	223	.vfc_vfsops = &routefs_vfsops,
	224	.vfc_name = "routefs",
	225	.vfc_typenum = FT_ROUTEFS,
	226	.vfc_refcount = 0,
	227	.vfc_flags = MNT_LOCAL,
	228	.vfc_mountroot = NULL,
	229	.vfc_next = NULL,
	230	.vfc_reserved1 = 0,
	231	.vfc_reserved2 = 0,
	232	.vfc_vfsflags = VFC_VFSGENERICARGS \| VFC_VFS64BITREADY,
	233	.vfc_descptr = NULL,
	234	.vfc_descsize = 0,
	235	.vfc_sysctl = NULL
	236	},
490019cf	237	#endif /* ROUTEFS */
cb323159 A	238
	239	{
	240	.vfc_vfsops = NULL,
	241	.vfc_name = "<unassigned>",
	242	.vfc_typenum = 0,
	243	.vfc_refcount = 0,
	244	.vfc_flags = 0,
	245	.vfc_mountroot = NULL,
	246	.vfc_next = NULL,
	247	.vfc_reserved1 = 0,
	248	.vfc_reserved2 = 0,
	249	.vfc_vfsflags = 0,
	250	.vfc_descptr = NULL,
	251	.vfc_descsize = 0,
	252	.vfc_sysctl = NULL
	253	},
	254	{
	255	.vfc_vfsops = NULL,
	256	.vfc_name = "<unassigned>",
	257	.vfc_typenum = 0,
	258	.vfc_refcount = 0,
	259	.vfc_flags = 0,
	260	.vfc_mountroot = NULL,
	261	.vfc_next = NULL,
	262	.vfc_reserved1 = 0,
	263	.vfc_reserved2 = 0,
	264	.vfc_vfsflags = 0,
	265	.vfc_descptr = NULL,
	266	.vfc_descsize = 0,
	267	.vfc_sysctl = NULL
	268	},
1c79356b A	269	};
	270
	271	/*
fe8ab488	272	* vfs_init will set maxvfstypenum to the highest defined type number.
1c79356b	273	*/
0a7de745	274	const int maxvfsslots = sizeof(vfstbllist) / sizeof(struct vfstable);
1c79356b	275	int numused_vfsslots = 0;
fe8ab488 A	276	int numregistered_fses = 0;
fe8ab488 A	277	int maxvfstypenum = VT_NON + 1;
6601e61a	278	struct vfstable *vfsconf = vfstbllist;
1c79356b A	279
	280	/*
	281	*
	282	* vfs_opv_descs enumerates the list of vnode classes, each with it's own
	283	* vnode operation vector. It is consulted at system boot to build operation
	284	* vectors. It is NULL terminated.
	285	*
	286	*/
1c79356b	287	extern struct vnodeopv_desc mfs_vnodeop_opv_desc;
cb323159	288	extern const struct vnodeopv_desc dead_vnodeop_opv_desc;
2d21ac55	289	#if FIFO && SOCKETS
cb323159	290	extern const struct vnodeopv_desc fifo_vnodeop_opv_desc;
2d21ac55	291	#endif /* SOCKETS */
cb323159 A	292	extern const struct vnodeopv_desc spec_vnodeop_opv_desc;
	293	extern const struct vnodeopv_desc nfsv2_vnodeop_opv_desc;
	294	extern const struct vnodeopv_desc spec_nfsv2nodeop_opv_desc;
	295	extern const struct vnodeopv_desc fifo_nfsv2nodeop_opv_desc;
	296	#if CONFIG_NFS4
	297	extern const struct vnodeopv_desc nfsv4_vnodeop_opv_desc;
	298	extern const struct vnodeopv_desc spec_nfsv4nodeop_opv_desc;
	299	extern const struct vnodeopv_desc fifo_nfsv4nodeop_opv_desc;
	300	#endif
1c79356b	301	extern struct vnodeopv_desc null_vnodeop_opv_desc;
1c79356b A	302	extern struct vnodeopv_desc devfs_vnodeop_opv_desc;
1c79356b A	303	extern struct vnodeopv_desc devfs_spec_vnodeop_opv_desc;
b0d623f7 A	304	#if FDESC
b0d623f7 A	305	extern struct vnodeopv_desc devfs_devfd_vnodeop_opv_desc;
cb323159	306	extern const struct vnodeopv_desc devfs_fdesc_vnodeop_opv_desc;
b0d623f7	307	#endif /* FDESC */
1c79356b	308
39236c6e	309	#if MOCKFS
cb323159	310	extern const struct vnodeopv_desc mockfs_vnodeop_opv_desc;
39236c6e A	311	#endif /* MOCKFS */
39236c6e A	312
cb323159	313	extern const struct vnodeopv_desc nullfs_vnodeop_opv_desc;
39037602	314
cb323159	315	const struct vnodeopv_desc *vfs_opv_descs[] = {
1c79356b	316	&dead_vnodeop_opv_desc,
2d21ac55	317	#if FIFO && SOCKETS
1c79356b A	318	&fifo_vnodeop_opv_desc,
	319	#endif
	320	&spec_vnodeop_opv_desc,
1c79356b A	321	#if MFS
	322	&mfs_vnodeop_opv_desc,
	323	#endif
	324	#if NFSCLIENT
	325	&nfsv2_vnodeop_opv_desc,
	326	&spec_nfsv2nodeop_opv_desc,
cb323159	327	#if CONFIG_NFS4
2d21ac55 A	328	&nfsv4_vnodeop_opv_desc,
2d21ac55 A	329	&spec_nfsv4nodeop_opv_desc,
cb323159	330	#endif
1c79356b A	331	#if FIFO
1c79356b A	332	&fifo_nfsv2nodeop_opv_desc,
cb323159	333	#if CONFIG_NFS4
2d21ac55	334	&fifo_nfsv4nodeop_opv_desc,
cb323159 A	335	#endif /* CONFIG_NFS4 */
	336	#endif /* FIFO */
	337	#endif /* NFSCLIENT */
1c79356b A	338	#if DEVFS
	339	&devfs_vnodeop_opv_desc,
	340	&devfs_spec_vnodeop_opv_desc,
b0d623f7 A	341	#if FDESC
	342	&devfs_devfd_vnodeop_opv_desc,
	343	&devfs_fdesc_vnodeop_opv_desc,
	344	#endif /* FDESC */
	345	#endif /* DEVFS */
39037602 A	346	#if NULLFS
	347	&nullfs_vnodeop_opv_desc,
	348	#endif /* NULLFS */
39236c6e A	349	#if MOCKFS
	350	&mockfs_vnodeop_opv_desc,
	351	#endif /* MOCKFS */
1c79356b A	352	NULL
1c79356b A	353	};