bsd/vfs/vfs_conf.c

   1 /*
   2  * Copyright (c) 2000-2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  26 /*
  27  * Copyright (c) 1989, 1993, 1995
  28  *      The Regents of the University of California.  All rights reserved.
  29  *
  30  * Redistribution and use in source and binary forms, with or without
  31  * modification, are permitted provided that the following conditions
  32  * are met:
  33  * 1. Redistributions of source code must retain the above copyright
  34  *    notice, this list of conditions and the following disclaimer.
  35  * 2. Redistributions in binary form must reproduce the above copyright
  36  *    notice, this list of conditions and the following disclaimer in the
  37  *    documentation and/or other materials provided with the distribution.
  38  * 3. All advertising materials mentioning features or use of this software
  39  *    must display the following acknowledgement:
  40  *      This product includes software developed by the University of
  41  *      California, Berkeley and its contributors.
  42  * 4. Neither the name of the University nor the names of its contributors
  43  *    may be used to endorse or promote products derived from this software
  44  *    without specific prior written permission.
  45  *
  46  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  47  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  48  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  49  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  50  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  51  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  52  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  53  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  54  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  55  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  56  * SUCH DAMAGE.
  57  *
  58  *      @(#)vfs_conf.c  8.11 (Berkeley) 5/10/95
  59  */
  60
  61 #include <sys/param.h>
  62 #include <sys/systm.h>
  63 #include <sys/mount.h>
  64 #include <sys/vnode.h>
  65
  66 /*
  67  * These define the root filesystem, device, and root filesystem type.
  68  */
  69 struct mount *rootfs;
  70 struct vnode *rootvnode;
  71 int (*mountroot)() = NULL;
  72
  73 /*
  74  * Set up the initial array of known filesystem types.
  75  */
  76 extern  struct vfsops ufs_vfsops;
  77 extern  int ffs_mountroot();
  78 extern  struct vfsops mfs_vfsops;
  79 extern  int mfs_mountroot();
  80 extern  struct vfsops hfs_vfsops;
  81 extern  int hfs_mountroot();
  82 extern  struct vfsops volfs_vfsops;
  83 extern  struct vfsops cd9660_vfsops;
  84 extern  int cd9660_mountroot();
  85 extern  struct vfsops nfs_vfsops;
  86 extern  int nfs_mountroot();
  87 extern  struct vfsops afs_vfsops;
  88 extern  struct vfsops null_vfsops;
  89 extern  struct vfsops union_vfsops;
  90 extern  struct vfsops fdesc_vfsops;
  91 extern  struct vfsops devfs_vfsops;
  92
  93 /*
  94  * Set up the filesystem operations for vnodes.
  95  */
  96 static struct vfsconf vfsconflist[] = {
  97         /* HFS/HFS+ Filesystem */
  98 #if HFS
  99         { &hfs_vfsops, "hfs", 17, 0, MNT_LOCAL | MNT_DOVOLFS, hfs_mountroot, NULL },
 100 #endif
 101
 102         /* Fast Filesystem */
 103 #if FFS
 104         { &ufs_vfsops, "ufs", 1, 0, MNT_LOCAL, ffs_mountroot, NULL },
 105 #endif
 106
 107         /* ISO9660 (aka CDROM) Filesystem */
 108 #if CD9660
 109         { &cd9660_vfsops, "cd9660", 14, 0, MNT_LOCAL, cd9660_mountroot, NULL },
 110 #endif
 111
 112         /* Memory-based Filesystem */
 113 #if MFS
 114         { &mfs_vfsops, "mfs", 3, 0, MNT_LOCAL, mfs_mountroot, NULL },
 115 #endif
 116
 117         /* Sun-compatible Network Filesystem */
 118 #if NFSCLIENT
 119         { &nfs_vfsops, "nfs", 2, 0, 0, nfs_mountroot, NULL },
 120 #endif
 121
 122         /* Andrew Filesystem */
 123 #if AFS
 124         { &afs_vfsops, "andrewfs", 13, 0, 0, afs_mountroot, NULL },
 125 #endif
 126
 127         /* Loopback (Minimal) Filesystem Layer */
 128 #if NULLFS
 129         { &null_vfsops, "loopback", 9, 0, 0, NULL, NULL },
 130 #endif
 131
 132         /* Union (translucent) Filesystem */
 133 #if UNION
 134         { &union_vfsops, "union", 15, 0, 0, NULL, NULL },
 135 #endif
 136
 137         /* File Descriptor Filesystem */
 138 #if FDESC
 139         { &fdesc_vfsops, "fdesc", 7, 0, 0, NULL, NULL },
 140 #endif
 141
 142         /* Volume ID Filesystem */
 143 #if VOLFS
 144         { &volfs_vfsops, "volfs", 18, 0, 0, NULL, NULL },
 145 #endif
 146
 147         /* Device Filesystem */
 148 #if DEVFS
 149         { &devfs_vfsops, "devfs", 19, 0, 0, NULL, NULL },
 150 #endif
 151
 152         {0},
 153         {0},
 154         {0},
 155         {0},
 156         {0},
 157         {0},
 158         {0},
 159         {0},
 160         {0},
 161         {0},
 162         {0},
 163         {0},
 164         {0},
 165         {0}
 166 };
 167
 168 /*
 169  * Initially the size of the list, vfs_init will set maxvfsconf
 170  * to the highest defined type number.
 171  */
 172 int maxvfsslots = sizeof(vfsconflist) / sizeof (struct vfsconf);
 173 int numused_vfsslots = 0;
 174 int maxvfsconf = sizeof(vfsconflist) / sizeof (struct vfsconf);
 175 struct vfsconf *vfsconf = vfsconflist;
 176
 177 /*
 178  *
 179  * vfs_opv_descs enumerates the list of vnode classes, each with it's own
 180  * vnode operation vector.  It is consulted at system boot to build operation
 181  * vectors.  It is NULL terminated.
 182  *
 183  */
 184 extern struct vnodeopv_desc ffs_vnodeop_opv_desc;
 185 extern struct vnodeopv_desc ffs_specop_opv_desc;
 186 extern struct vnodeopv_desc ffs_fifoop_opv_desc;
 187 extern struct vnodeopv_desc mfs_vnodeop_opv_desc;
 188 extern struct vnodeopv_desc dead_vnodeop_opv_desc;
 189 extern struct vnodeopv_desc fifo_vnodeop_opv_desc;
 190 extern struct vnodeopv_desc spec_vnodeop_opv_desc;
 191 extern struct vnodeopv_desc nfsv2_vnodeop_opv_desc;
 192 extern struct vnodeopv_desc spec_nfsv2nodeop_opv_desc;
 193 extern struct vnodeopv_desc fifo_nfsv2nodeop_opv_desc;
 194 extern struct vnodeopv_desc fdesc_vnodeop_opv_desc;
 195 extern struct vnodeopv_desc null_vnodeop_opv_desc;
 196 extern struct vnodeopv_desc hfs_vnodeop_opv_desc;
 197 extern struct vnodeopv_desc hfs_specop_opv_desc;
 198 extern struct vnodeopv_desc hfs_fifoop_opv_desc;
 199 extern struct vnodeopv_desc volfs_vnodeop_opv_desc;
 200 extern struct vnodeopv_desc cd9660_vnodeop_opv_desc;
 201 extern struct vnodeopv_desc cd9660_cdxaop_opv_desc;
 202 extern struct vnodeopv_desc cd9660_specop_opv_desc;
 203 extern struct vnodeopv_desc cd9660_fifoop_opv_desc;
 204 extern struct vnodeopv_desc union_vnodeop_opv_desc;
 205 extern struct vnodeopv_desc devfs_vnodeop_opv_desc;
 206 extern struct vnodeopv_desc devfs_spec_vnodeop_opv_desc;
 207
 208 struct vnodeopv_desc *vfs_opv_descs[] = {
 209         &ffs_vnodeop_opv_desc,
 210         &ffs_specop_opv_desc,
 211 #if FIFO
 212         &ffs_fifoop_opv_desc,
 213 #endif
 214         &dead_vnodeop_opv_desc,
 215 #if FIFO
 216         &fifo_vnodeop_opv_desc,
 217 #endif
 218         &spec_vnodeop_opv_desc,
 219 #if MFS
 220         &mfs_vnodeop_opv_desc,
 221 #endif
 222 #if NFSCLIENT
 223         &nfsv2_vnodeop_opv_desc,
 224         &spec_nfsv2nodeop_opv_desc,
 225 #if FIFO
 226         &fifo_nfsv2nodeop_opv_desc,
 227 #endif
 228 #endif
 229 #if FDESC
 230         &fdesc_vnodeop_opv_desc,
 231 #endif
 232 #if NULLFS
 233         &null_vnodeop_opv_desc,
 234 #endif
 235 #if HFS
 236         &hfs_vnodeop_opv_desc,
 237         &hfs_specop_opv_desc,
 238 #if FIFO
 239         &hfs_fifoop_opv_desc,
 240 #endif
 241 #endif
 242 #if CD9660
 243         &cd9660_vnodeop_opv_desc,
 244         &cd9660_cdxaop_opv_desc,
 245         &cd9660_specop_opv_desc,
 246 #if FIFO
 247         &cd9660_fifoop_opv_desc,
 248 #endif
 249 #endif
 250 #if UNION
 251         &union_vnodeop_opv_desc,
 252 #endif
 253 #if VOLFS
 254         &volfs_vnodeop_opv_desc,
 255 #endif
 256 #if DEVFS
 257         &devfs_vnodeop_opv_desc,
 258         &devfs_spec_vnodeop_opv_desc,
 259 #endif
 260         NULL
 261 };