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 int (*mountroot)(void) = NULL;
  81
  82 /*
  83  * Set up the initial array of known filesystem types.
  84  */
  85 extern  struct vfsops ufs_vfsops;
  86 #if FFS
  87 extern  int ffs_mountroot(mount_t, vnode_t, vfs_context_t);
  88 #endif
  89 extern  struct vfsops mfs_vfsops;
  90 extern  int mfs_mountroot(mount_t, vnode_t, vfs_context_t);     /* dead */
  91 extern  struct vfsops hfs_vfsops;
  92 extern  int hfs_mountroot(mount_t, vnode_t, vfs_context_t);
  93 extern  struct vfsops cd9660_vfsops;
  94 extern  int cd9660_mountroot(mount_t, vnode_t, vfs_context_t);
  95 extern  struct vfsops nfs_vfsops;
  96 extern  int nfs_mountroot(void);
  97 extern  struct vfsops afs_vfsops;
  98 extern  struct vfsops null_vfsops;
  99 extern  struct vfsops union_vfsops;
 100 extern  struct vfsops fdesc_vfsops;
 101 extern  struct vfsops devfs_vfsops;
 102
 103 /*
 104  * For nfs_mountroot(void) cast.  nfs_mountroot ignores its parameters, if
 105  * invoked through this table.
 106  */
 107 typedef int (*mountroot_t)(mount_t, vnode_t, vfs_context_t);
 108
 109 /*
 110  * Set up the filesystem operations for vnodes.
 111  */
 112 static struct vfstable vfstbllist[] = {
 113         /* HFS/HFS+ Filesystem */
 114 #if HFS
 115         { &hfs_vfsops, "hfs", 17, 0, (MNT_LOCAL | MNT_DOVOLFS), hfs_mountroot, NULL, 1, {{0}}, VFC_VFSLOCALARGS | VFC_VFSREADDIR_EXTENDED, NULL, 0, 1},
 116 #endif
 117
 118         /* Fast Filesystem */
 119 #if FFS
 120         { &ufs_vfsops, "ufs", 1, 0, MNT_LOCAL, ffs_mountroot, NULL, 0, {{0}}, VFC_VFSLOCALARGS | VFC_VFSREADDIR_EXTENDED, NULL, 0, 0},
 121 #endif
 122
 123         /* ISO9660 (aka CDROM) Filesystem */
 124 #if CD9660
 125         { &cd9660_vfsops, "cd9660", 14, 0, MNT_LOCAL, cd9660_mountroot, NULL, 0, {{0}}, VFC_VFSLOCALARGS, NULL, 0, 0},
 126 #endif
 127
 128         /* Memory-based Filesystem */
 129 #if MFS
 130         { &mfs_vfsops, "mfs", 3, 0, MNT_LOCAL, mfs_mountroot, NULL, 0, {{0}}, VFC_VFSGENERICARGS , NULL, 0, 0},
 131 #endif
 132
 133         /* Sun-compatible Network Filesystem */
 134 #if NFSCLIENT
 135         { &nfs_vfsops, "nfs", 2, 0, 0, (mountroot_t)nfs_mountroot, NULL, 1, {{0}}, VFC_VFSGENERICARGS|VFC_VFSPREFLIGHT, NULL, 0, 1},
 136 #endif
 137
 138         /* Andrew Filesystem */
 139 #if AFS
 140         { &afs_vfsops, "andrewfs", 13, 0, 0, afs_mountroot, NULL, 0, {{0}}, VFC_VFSGENERICARGS , NULL, 0, 0},
 141 #endif
 142
 143         /* Loopback (Minimal) Filesystem Layer */
 144 #if NULLFS
 145         { &null_vfsops, "loopback", 9, 0, 0, NULL, NULL, 0, {{0}}, VFC_VFSGENERICARGS , NULL, 0, 0},
 146 #endif
 147
 148         /* Union (translucent) Filesystem */
 149 #if UNION
 150         { &union_vfsops, "unionfs", 15, 0, 0, NULL, NULL, 1, {{0}}, VFC_VFSGENERICARGS , NULL, 0, 0},
 151 #endif
 152
 153         /* File Descriptor Filesystem */
 154 #if FDESC
 155         { &fdesc_vfsops, "fdesc", 7, 0, 0, NULL, NULL, 0, {{0}}, VFC_VFSGENERICARGS , NULL, 0, 0},
 156 #endif
 157
 158         /* Device Filesystem */
 159 #if DEVFS
 160 #if CONFIG_MACF
 161         { &devfs_vfsops, "devfs", 19, 0, MNT_MULTILABEL, NULL, NULL, 0, {{0}}, VFC_VFSGENERICARGS , NULL, 0, 0},
 162 #else
 163         { &devfs_vfsops, "devfs", 19, 0, 0, NULL, NULL, 0, {{0}}, VFC_VFSGENERICARGS , NULL, 0, 0},
 164 #endif /* MAC */
 165 #endif
 166
 167
 168         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, {{0}}, 0, NULL, 0, 0},
 169         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, {{0}}, 0, NULL, 0, 0},
 170         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, {{0}}, 0, NULL, 0, 0},
 171         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, {{0}}, 0, NULL, 0, 0},
 172         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, {{0}}, 0, NULL, 0, 0},
 173         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, {{0}}, 0, NULL, 0, 0},
 174         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, {{0}}, 0, NULL, 0, 0},
 175         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, {{0}}, 0, NULL, 0, 0},
 176         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, {{0}}, 0, NULL, 0, 0},
 177         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, {{0}}, 0, NULL, 0, 0},
 178         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, {{0}}, 0, NULL, 0, 0},
 179         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, {{0}}, 0, NULL, 0, 0},
 180         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, {{0}}, 0, NULL, 0, 0},
 181         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, {{0}}, 0, NULL, 0, 0},
 182         {NULL, "<unassigned>", 0, 0, 0, NULL, NULL, 0, {{0}}, 0, NULL, 0, 0}
 183 };
 184
 185 /*
 186  * Initially the size of the list, vfs_init will set maxvfsconf
 187  * to the highest defined type number.
 188  */
 189 int maxvfsslots = sizeof(vfstbllist) / sizeof (struct vfstable);
 190 int numused_vfsslots = 0;
 191 int maxvfsconf = sizeof(vfstbllist) / sizeof (struct vfstable);
 192 struct vfstable *vfsconf = vfstbllist;
 193
 194 /*
 195  *
 196  * vfs_opv_descs enumerates the list of vnode classes, each with it's own
 197  * vnode operation vector.  It is consulted at system boot to build operation
 198  * vectors.  It is NULL terminated.
 199  *
 200  */
 201 #if FFS
 202 extern struct vnodeopv_desc ffs_vnodeop_opv_desc;
 203 extern struct vnodeopv_desc ffs_specop_opv_desc;
 204 extern struct vnodeopv_desc ffs_fifoop_opv_desc;
 205 #endif
 206 extern struct vnodeopv_desc mfs_vnodeop_opv_desc;
 207 extern struct vnodeopv_desc dead_vnodeop_opv_desc;
 208 #if FIFO && SOCKETS
 209 extern struct vnodeopv_desc fifo_vnodeop_opv_desc;
 210 #endif /* SOCKETS */
 211 extern struct vnodeopv_desc spec_vnodeop_opv_desc;
 212 extern struct vnodeopv_desc nfsv2_vnodeop_opv_desc;
 213 extern struct vnodeopv_desc spec_nfsv2nodeop_opv_desc;
 214 extern struct vnodeopv_desc fifo_nfsv2nodeop_opv_desc;
 215 extern struct vnodeopv_desc nfsv4_vnodeop_opv_desc;
 216 extern struct vnodeopv_desc spec_nfsv4nodeop_opv_desc;
 217 extern struct vnodeopv_desc fifo_nfsv4nodeop_opv_desc;
 218 extern struct vnodeopv_desc fdesc_vnodeop_opv_desc;
 219 extern struct vnodeopv_desc null_vnodeop_opv_desc;
 220 extern struct vnodeopv_desc hfs_vnodeop_opv_desc;
 221 extern struct vnodeopv_desc hfs_specop_opv_desc;
 222 extern struct vnodeopv_desc hfs_fifoop_opv_desc;
 223 extern struct vnodeopv_desc cd9660_vnodeop_opv_desc;
 224 extern struct vnodeopv_desc cd9660_cdxaop_opv_desc;
 225 extern struct vnodeopv_desc cd9660_specop_opv_desc;
 226 extern struct vnodeopv_desc cd9660_fifoop_opv_desc;
 227 extern struct vnodeopv_desc union_vnodeop_opv_desc;
 228 extern struct vnodeopv_desc devfs_vnodeop_opv_desc;
 229 extern struct vnodeopv_desc devfs_spec_vnodeop_opv_desc;
 230
 231 struct vnodeopv_desc *vfs_opv_descs[] = {
 232 #if FFS
 233         &ffs_vnodeop_opv_desc,
 234         &ffs_specop_opv_desc,
 235 #if FIFO
 236         &ffs_fifoop_opv_desc,
 237 #endif
 238 #endif
 239         &dead_vnodeop_opv_desc,
 240 #if FIFO && SOCKETS
 241         &fifo_vnodeop_opv_desc,
 242 #endif
 243         &spec_vnodeop_opv_desc,
 244 #if MFS
 245         &mfs_vnodeop_opv_desc,
 246 #endif
 247 #if NFSCLIENT
 248         &nfsv2_vnodeop_opv_desc,
 249         &spec_nfsv2nodeop_opv_desc,
 250         &nfsv4_vnodeop_opv_desc,
 251         &spec_nfsv4nodeop_opv_desc,
 252 #if FIFO
 253         &fifo_nfsv2nodeop_opv_desc,
 254         &fifo_nfsv4nodeop_opv_desc,
 255 #endif
 256 #endif
 257 #if FDESC
 258         &fdesc_vnodeop_opv_desc,
 259 #endif
 260 #if NULLFS
 261         &null_vnodeop_opv_desc,
 262 #endif
 263 #if HFS
 264         &hfs_vnodeop_opv_desc,
 265         &hfs_specop_opv_desc,
 266 #if FIFO
 267         &hfs_fifoop_opv_desc,
 268 #endif
 269 #endif
 270 #if CD9660
 271         &cd9660_vnodeop_opv_desc,
 272         &cd9660_cdxaop_opv_desc,
 273         &cd9660_specop_opv_desc,
 274 #if FIFO
 275         &cd9660_fifoop_opv_desc,
 276 #endif
 277 #endif
 278 #if UNION
 279         &union_vnodeop_opv_desc,
 280 #endif
 281 #if DEVFS
 282         &devfs_vnodeop_opv_desc,
 283         &devfs_spec_vnodeop_opv_desc,
 284 #endif
 285         NULL
 286 };