bsd/vfs/vfs_conf.c

   1 /*
   2  * Copyright (c) 2000-2004 Apple Computer, 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 #include <sys/param.h>
  65 #include <sys/systm.h>
  66 #include <sys/mount_internal.h>
  67 #include <sys/vnode_internal.h>
  68
  69 /*
  70  * These define the root filesystem, device, and root filesystem type.
  71  */
  72 struct mount *rootfs;
  73 struct vnode *rootvnode;
  74 int (*mountroot)() = NULL;
  75
  76 /*
  77  * Set up the initial array of known filesystem types.
  78  */
  79 extern  struct vfsops ufs_vfsops;
  80 #if FFS
  81 extern  int ffs_mountroot();
  82 #endif
  83 extern  struct vfsops mfs_vfsops;
  84 extern  int mfs_mountroot();
  85 extern  struct vfsops hfs_vfsops;
  86 extern  int hfs_mountroot();
  87 extern  struct vfsops volfs_vfsops;
  88 extern  struct vfsops cd9660_vfsops;
  89 extern  int cd9660_mountroot();
  90 extern  struct vfsops nfs_vfsops;
  91 extern  int nfs_mountroot();
  92 extern  struct vfsops afs_vfsops;
  93 extern  struct vfsops null_vfsops;
  94 extern  struct vfsops union_vfsops;
  95 extern  struct vfsops fdesc_vfsops;
  96 extern  struct vfsops devfs_vfsops;
  97
  98 /*
  99  * Set up the filesystem operations for vnodes.
 100  */
 101 static struct vfstable vfsconflist[] = {
 102         /* HFS/HFS+ Filesystem */
 103 #if HFS
 104         { &hfs_vfsops, "hfs", 17, 0, MNT_LOCAL | MNT_DOVOLFS, hfs_mountroot, NULL, 0, {0}, VFC_VFSLOCALARGS, 0, 0 },
 105 #endif
 106
 107         /* Fast Filesystem */
 108 #if FFS
 109         { &ufs_vfsops, "ufs", 1, 0, MNT_LOCAL, ffs_mountroot, NULL, 0, {0}, VFC_VFSLOCALARGS, 0, 0  },
 110 #endif
 111
 112         /* ISO9660 (aka CDROM) Filesystem */
 113 #if CD9660
 114         { &cd9660_vfsops, "cd9660", 14, 0, MNT_LOCAL, cd9660_mountroot, NULL, 0, {0}, VFC_VFSLOCALARGS, 0, 0 },
 115 #endif
 116
 117         /* Memory-based Filesystem */
 118 #if MFS
 119         { &mfs_vfsops, "mfs", 3, 0, MNT_LOCAL, mfs_mountroot, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 120 #endif
 121
 122         /* Sun-compatible Network Filesystem */
 123 #if NFSCLIENT
 124         { &nfs_vfsops, "nfs", 2, 0, 0, nfs_mountroot, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 125 #endif
 126
 127         /* Andrew Filesystem */
 128 #if AFS
 129         { &afs_vfsops, "andrewfs", 13, 0, 0, afs_mountroot, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 130 #endif
 131
 132         /* Loopback (Minimal) Filesystem Layer */
 133 #if NULLFS
 134         { &null_vfsops, "loopback", 9, 0, 0, NULL, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 135 #endif
 136
 137         /* Union (translucent) Filesystem */
 138 #if UNION
 139         { &union_vfsops, "union", 15, 0, 0, NULL, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 140 #endif
 141
 142         /* File Descriptor Filesystem */
 143 #if FDESC
 144         { &fdesc_vfsops, "fdesc", 7, 0, 0, NULL, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 145 #endif
 146
 147         /* Volume ID Filesystem */
 148 #if VOLFS
 149         { &volfs_vfsops, "volfs", 18, 0, 0, NULL, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 150 #endif
 151
 152         /* Device Filesystem */
 153 #if DEVFS
 154         { &devfs_vfsops, "devfs", 19, 0, 0, NULL, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 155 #endif
 156
 157         {0},
 158         {0},
 159         {0},
 160         {0},
 161         {0},
 162         {0},
 163         {0},
 164         {0},
 165         {0},
 166         {0},
 167         {0},
 168         {0},
 169         {0},
 170         {0}
 171 };
 172
 173 /*
 174  * Initially the size of the list, vfs_init will set maxvfsconf
 175  * to the highest defined type number.
 176  */
 177 int maxvfsslots = sizeof(vfsconflist) / sizeof (struct vfsconf);
 178 int numused_vfsslots = 0;
 179 int maxvfsconf = sizeof(vfsconflist) / sizeof (struct vfsconf);
 180 struct vfstable *vfsconf = vfsconflist;
 181
 182 /*
 183  *
 184  * vfs_opv_descs enumerates the list of vnode classes, each with it's own
 185  * vnode operation vector.  It is consulted at system boot to build operation
 186  * vectors.  It is NULL terminated.
 187  *
 188  */
 189 #if FFS
 190 extern struct vnodeopv_desc ffs_vnodeop_opv_desc;
 191 extern struct vnodeopv_desc ffs_specop_opv_desc;
 192 extern struct vnodeopv_desc ffs_fifoop_opv_desc;
 193 #endif
 194 extern struct vnodeopv_desc mfs_vnodeop_opv_desc;
 195 extern struct vnodeopv_desc dead_vnodeop_opv_desc;
 196 extern struct vnodeopv_desc fifo_vnodeop_opv_desc;
 197 extern struct vnodeopv_desc spec_vnodeop_opv_desc;
 198 extern struct vnodeopv_desc nfsv2_vnodeop_opv_desc;
 199 extern struct vnodeopv_desc spec_nfsv2nodeop_opv_desc;
 200 extern struct vnodeopv_desc fifo_nfsv2nodeop_opv_desc;
 201 extern struct vnodeopv_desc fdesc_vnodeop_opv_desc;
 202 extern struct vnodeopv_desc null_vnodeop_opv_desc;
 203 extern struct vnodeopv_desc hfs_vnodeop_opv_desc;
 204 extern struct vnodeopv_desc hfs_specop_opv_desc;
 205 extern struct vnodeopv_desc hfs_fifoop_opv_desc;
 206 extern struct vnodeopv_desc volfs_vnodeop_opv_desc;
 207 extern struct vnodeopv_desc cd9660_vnodeop_opv_desc;
 208 extern struct vnodeopv_desc cd9660_cdxaop_opv_desc;
 209 extern struct vnodeopv_desc cd9660_specop_opv_desc;
 210 extern struct vnodeopv_desc cd9660_fifoop_opv_desc;
 211 extern struct vnodeopv_desc union_vnodeop_opv_desc;
 212 extern struct vnodeopv_desc devfs_vnodeop_opv_desc;
 213 extern struct vnodeopv_desc devfs_spec_vnodeop_opv_desc;
 214
 215 struct vnodeopv_desc *vfs_opv_descs[] = {
 216 #if FFS
 217         &ffs_vnodeop_opv_desc,
 218         &ffs_specop_opv_desc,
 219 #if FIFO
 220         &ffs_fifoop_opv_desc,
 221 #endif
 222 #endif
 223         &dead_vnodeop_opv_desc,
 224 #if FIFO
 225         &fifo_vnodeop_opv_desc,
 226 #endif
 227         &spec_vnodeop_opv_desc,
 228 #if MFS
 229         &mfs_vnodeop_opv_desc,
 230 #endif
 231 #if NFSCLIENT
 232         &nfsv2_vnodeop_opv_desc,
 233         &spec_nfsv2nodeop_opv_desc,
 234 #if FIFO
 235         &fifo_nfsv2nodeop_opv_desc,
 236 #endif
 237 #endif
 238 #if FDESC
 239         &fdesc_vnodeop_opv_desc,
 240 #endif
 241 #if NULLFS
 242         &null_vnodeop_opv_desc,
 243 #endif
 244 #if HFS
 245         &hfs_vnodeop_opv_desc,
 246         &hfs_specop_opv_desc,
 247 #if FIFO
 248         &hfs_fifoop_opv_desc,
 249 #endif
 250 #endif
 251 #if CD9660
 252         &cd9660_vnodeop_opv_desc,
 253         &cd9660_cdxaop_opv_desc,
 254         &cd9660_specop_opv_desc,
 255 #if FIFO
 256         &cd9660_fifoop_opv_desc,
 257 #endif
 258 #endif
 259 #if UNION
 260         &union_vnodeop_opv_desc,
 261 #endif
 262 #if VOLFS
 263         &volfs_vnodeop_opv_desc,
 264 #endif
 265 #if DEVFS
 266         &devfs_vnodeop_opv_desc,
 267         &devfs_spec_vnodeop_opv_desc,
 268 #endif
 269         NULL
 270 };