bsd/vfs/vfs_conf.c

   1 /*
   2  * Copyright (c) 2000-2007 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  */
  78 struct mount *rootfs;
  79 struct vnode *rootvnode;
  80
  81 #ifdef CONFIG_IMGSRC_ACCESS
  82 struct vnode *imgsrc_rootvnodes[MAX_IMAGEBOOT_NESTING]; /* [0] -> source volume, [1] -> first disk image */
  83 #endif /* CONFIG_IMGSRC_ACCESS */
  84
  85 int (*mountroot)(void) = NULL;
  86
  87 /*
  88  * Set up the initial array of known filesystem types.
  89  */
  90 extern  struct vfsops mfs_vfsops;
  91 extern  int mfs_mountroot(mount_t, vnode_t, vfs_context_t);     /* dead */
  92 extern  struct vfsops hfs_vfsops;
  93 extern  int hfs_mountroot(mount_t, vnode_t, vfs_context_t);
  94 extern  struct vfsops nfs_vfsops;
  95 extern  int nfs_mountroot(void);
  96 extern  struct vfsops afs_vfsops;
  97 extern  struct vfsops null_vfsops;
  98 extern  struct vfsops devfs_vfsops;
  99
 100 #if MOCKFS
 101 extern  struct vfsops mockfs_vfsops;
 102 extern  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  */
 109 typedef int (*mountroot_t)(mount_t, vnode_t, vfs_context_t);
 110
 111 /*
 112  * Set up the filesystem operations for vnodes.
 113  */
 114 static struct vfstable vfstbllist[] = {
 115         /* HFS/HFS+ Filesystem */
 116 #if HFS
 117         { &hfs_vfsops, "hfs", 17, 0, (MNT_LOCAL | MNT_DOVOLFS), hfs_mountroot, NULL, 0, 0, VFC_VFSLOCALARGS | VFC_VFSREADDIR_EXTENDED | VFC_VFS64BITREADY | VFC_VFSVNOP_PAGEOUTV2 | VFC_VFSVNOP_PAGEINV2, NULL, 0},
 118 #endif
 119
 120         /* Memory-based Filesystem */
 121
 122 #ifndef __LP64__
 123 #if MFS
 124         { &mfs_vfsops, "mfs", 3, 0, MNT_LOCAL, mfs_mountroot, NULL, 0, 0, VFC_VFSGENERICARGS, NULL, 0},
 125 #endif
 126 #endif /* __LP64__ */
 127
 128         /* Sun-compatible Network Filesystem */
 129 #if NFSCLIENT
 130         { &nfs_vfsops, "nfs", 2, 0, 0, NULL, NULL, 0, 0, VFC_VFSGENERICARGS | VFC_VFSPREFLIGHT | VFC_VFS64BITREADY | VFC_VFSREADDIR_EXTENDED, NULL, 0},
 131 #endif
 132
 133         /* Andrew Filesystem */
 134 #ifndef __LP64__
 135 #if AFS
 136         { &afs_vfsops, "andrewfs", 13, 0, 0, afs_mountroot, NULL, 0, 0, VFC_VFSGENERICARGS , NULL, 0},
 137 #endif
 138 #endif /* __LP64__ */
 139
 140         /* Device Filesystem */
 141 #if DEVFS
 142 #if CONFIG_MACF
 143         { &devfs_vfsops, "devfs", 19, 0, (MNT_DONTBROWSE | MNT_MULTILABEL), NULL, NULL, 0, 0, VFC_VFSGENERICARGS | VFC_VFS64BITREADY, NULL, 0},
 144 #else
 145         { &devfs_vfsops, "devfs", 19, 0, MNT_DONTBROWSE, NULL, NULL, 0, 0, VFC_VFSGENERICARGS | VFC_VFS64BITREADY, NULL, 0},
 146 #endif /* MAC */
 147 #endif
 148
 149 #ifndef __LP64__
 150 #endif /* __LP64__ */
 151
 152 #if MOCKFS
 153         /* If we are configured for it, mockfs should always be the last standard entry (and thus the last FS we attempt mountroot with) */
 154         { &mockfs_vfsops, "mockfs", 0x6D6F636B, 0, MNT_LOCAL, mockfs_mountroot, NULL, 0, 0, VFC_VFSGENERICARGS, NULL, 0},
 155 #endif /* MOCKFS */
 156
 157         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, 0, 0, NULL, 0},
 158         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, 0, 0, NULL, 0},
 159         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, 0, 0, NULL, 0},
 160         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, 0, 0, NULL, 0},
 161         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, 0, 0, NULL, 0},
 162         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, 0, 0, NULL, 0},
 163         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, 0, 0, NULL, 0},
 164         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, 0, 0, NULL, 0},
 165         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, 0, 0, NULL, 0},
 166         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, 0, 0, NULL, 0},
 167         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, 0, 0, NULL, 0},
 168         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, 0, 0, NULL, 0},
 169         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, 0, 0, NULL, 0},
 170         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, 0, 0, NULL, 0},
 171         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, 0, 0, NULL, 0}
 172 };
 173
 174 /*
 175  * Initially the size of the list, vfs_init will set maxvfsconf
 176  * to the highest defined type number.
 177  */
 178 int maxvfsslots = sizeof(vfstbllist) / sizeof (struct vfstable);
 179 int numused_vfsslots = 0;
 180 int maxvfsconf = sizeof(vfstbllist) / sizeof (struct vfstable);
 181 struct vfstable *vfsconf = vfstbllist;
 182
 183 /*
 184  *
 185  * vfs_opv_descs enumerates the list of vnode classes, each with it's own
 186  * vnode operation vector.  It is consulted at system boot to build operation
 187  * vectors.  It is NULL terminated.
 188  *
 189  */
 190 extern struct vnodeopv_desc mfs_vnodeop_opv_desc;
 191 extern struct vnodeopv_desc dead_vnodeop_opv_desc;
 192 #if FIFO && SOCKETS
 193 extern struct vnodeopv_desc fifo_vnodeop_opv_desc;
 194 #endif /* SOCKETS */
 195 extern struct vnodeopv_desc spec_vnodeop_opv_desc;
 196 extern struct vnodeopv_desc nfsv2_vnodeop_opv_desc;
 197 extern struct vnodeopv_desc spec_nfsv2nodeop_opv_desc;
 198 extern struct vnodeopv_desc fifo_nfsv2nodeop_opv_desc;
 199 extern struct vnodeopv_desc nfsv4_vnodeop_opv_desc;
 200 extern struct vnodeopv_desc spec_nfsv4nodeop_opv_desc;
 201 extern struct vnodeopv_desc fifo_nfsv4nodeop_opv_desc;
 202 extern struct vnodeopv_desc null_vnodeop_opv_desc;
 203 extern struct vnodeopv_desc hfs_vnodeop_opv_desc;
 204 #if CONFIG_HFS_STD
 205 extern struct vnodeopv_desc hfs_std_vnodeop_opv_desc;
 206 #endif
 207 extern struct vnodeopv_desc hfs_specop_opv_desc;
 208 extern struct vnodeopv_desc hfs_fifoop_opv_desc;
 209 extern struct vnodeopv_desc devfs_vnodeop_opv_desc;
 210 extern struct vnodeopv_desc devfs_spec_vnodeop_opv_desc;
 211 #if FDESC
 212 extern struct vnodeopv_desc devfs_devfd_vnodeop_opv_desc;
 213 extern struct vnodeopv_desc devfs_fdesc_vnodeop_opv_desc;
 214 #endif /* FDESC */
 215
 216 #if MOCKFS
 217 extern struct vnodeopv_desc mockfs_vnodeop_opv_desc;
 218 #endif /* MOCKFS */
 219
 220 struct vnodeopv_desc *vfs_opv_descs[] = {
 221         &dead_vnodeop_opv_desc,
 222 #if FIFO && SOCKETS
 223         &fifo_vnodeop_opv_desc,
 224 #endif
 225         &spec_vnodeop_opv_desc,
 226 #if MFS
 227         &mfs_vnodeop_opv_desc,
 228 #endif
 229 #if NFSCLIENT
 230         &nfsv2_vnodeop_opv_desc,
 231         &spec_nfsv2nodeop_opv_desc,
 232         &nfsv4_vnodeop_opv_desc,
 233         &spec_nfsv4nodeop_opv_desc,
 234 #if FIFO
 235         &fifo_nfsv2nodeop_opv_desc,
 236         &fifo_nfsv4nodeop_opv_desc,
 237 #endif
 238 #endif
 239 #if HFS
 240         &hfs_vnodeop_opv_desc,
 241 #if CONFIG_HFS_STD
 242         &hfs_std_vnodeop_opv_desc,
 243 #endif
 244         &hfs_specop_opv_desc,
 245 #if FIFO
 246         &hfs_fifoop_opv_desc,
 247 #endif
 248 #endif
 249 #if DEVFS
 250         &devfs_vnodeop_opv_desc,
 251         &devfs_spec_vnodeop_opv_desc,
 252 #if FDESC
 253         &devfs_devfd_vnodeop_opv_desc,
 254         &devfs_fdesc_vnodeop_opv_desc,
 255 #endif /* FDESC */
 256 #endif /* DEVFS */
 257 #if MOCKFS
 258         &mockfs_vnodeop_opv_desc,
 259 #endif /* MOCKFS */
 260         NULL
 261 };