bsd/vfs/vfs_conf.c

   1 /*
   2  * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  23 /*
  24  * Copyright (c) 1989, 1993, 1995
  25  *      The Regents of the University of California.  All rights reserved.
  26  *
  27  * Redistribution and use in source and binary forms, with or without
  28  * modification, are permitted provided that the following conditions
  29  * are met:
  30  * 1. Redistributions of source code must retain the above copyright
  31  *    notice, this list of conditions and the following disclaimer.
  32  * 2. Redistributions in binary form must reproduce the above copyright
  33  *    notice, this list of conditions and the following disclaimer in the
  34  *    documentation and/or other materials provided with the distribution.
  35  * 3. All advertising materials mentioning features or use of this software
  36  *    must display the following acknowledgement:
  37  *      This product includes software developed by the University of
  38  *      California, Berkeley and its contributors.
  39  * 4. Neither the name of the University nor the names of its contributors
  40  *    may be used to endorse or promote products derived from this software
  41  *    without specific prior written permission.
  42  *
  43  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  44  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  45  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  46  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  47  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  48  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  49  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  50  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  51  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  52  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  53  * SUCH DAMAGE.
  54  *
  55  *      @(#)vfs_conf.c  8.11 (Berkeley) 5/10/95
  56  */
  57
  58 #include <sys/param.h>
  59 #include <sys/systm.h>
  60 #include <sys/mount_internal.h>
  61 #include <sys/vnode_internal.h>
  62
  63 /*
  64  * These define the root filesystem, device, and root filesystem type.
  65  */
  66 struct mount *rootfs;
  67 struct vnode *rootvnode;
  68 int (*mountroot)() = NULL;
  69
  70 /*
  71  * Set up the initial array of known filesystem types.
  72  */
  73 extern  struct vfsops ufs_vfsops;
  74 #if FFS
  75 extern  int ffs_mountroot();
  76 #endif
  77 extern  struct vfsops mfs_vfsops;
  78 extern  int mfs_mountroot();
  79 extern  struct vfsops hfs_vfsops;
  80 extern  int hfs_mountroot();
  81 extern  struct vfsops volfs_vfsops;
  82 extern  struct vfsops cd9660_vfsops;
  83 extern  int cd9660_mountroot();
  84 extern  struct vfsops nfs_vfsops;
  85 extern  int nfs_mountroot();
  86 extern  struct vfsops afs_vfsops;
  87 extern  struct vfsops null_vfsops;
  88 extern  struct vfsops union_vfsops;
  89 extern  struct vfsops fdesc_vfsops;
  90 extern  struct vfsops devfs_vfsops;
  91
  92 /*
  93  * Set up the filesystem operations for vnodes.
  94  */
  95 static struct vfstable vfsconflist[] = {
  96         /* HFS/HFS+ Filesystem */
  97 #if HFS
  98         { &hfs_vfsops, "hfs", 17, 0, MNT_LOCAL | MNT_DOVOLFS, hfs_mountroot, NULL, 0, {0}, VFC_VFSLOCALARGS, 0, 0 },
  99 #endif
 100
 101         /* Fast Filesystem */
 102 #if FFS
 103         { &ufs_vfsops, "ufs", 1, 0, MNT_LOCAL, ffs_mountroot, NULL, 0, {0}, VFC_VFSLOCALARGS, 0, 0  },
 104 #endif
 105
 106         /* ISO9660 (aka CDROM) Filesystem */
 107 #if CD9660
 108         { &cd9660_vfsops, "cd9660", 14, 0, MNT_LOCAL, cd9660_mountroot, NULL, 0, {0}, VFC_VFSLOCALARGS, 0, 0 },
 109 #endif
 110
 111         /* Memory-based Filesystem */
 112 #if MFS
 113         { &mfs_vfsops, "mfs", 3, 0, MNT_LOCAL, mfs_mountroot, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 114 #endif
 115
 116         /* Sun-compatible Network Filesystem */
 117 #if NFSCLIENT
 118         { &nfs_vfsops, "nfs", 2, 0, 0, nfs_mountroot, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 119 #endif
 120
 121         /* Andrew Filesystem */
 122 #if AFS
 123         { &afs_vfsops, "andrewfs", 13, 0, 0, afs_mountroot, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 124 #endif
 125
 126         /* Loopback (Minimal) Filesystem Layer */
 127 #if NULLFS
 128         { &null_vfsops, "loopback", 9, 0, 0, NULL, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 129 #endif
 130
 131         /* Union (translucent) Filesystem */
 132 #if UNION
 133         { &union_vfsops, "union", 15, 0, 0, NULL, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 134 #endif
 135
 136         /* File Descriptor Filesystem */
 137 #if FDESC
 138         { &fdesc_vfsops, "fdesc", 7, 0, 0, NULL, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 139 #endif
 140
 141         /* Volume ID Filesystem */
 142 #if VOLFS
 143         { &volfs_vfsops, "volfs", 18, 0, 0, NULL, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 144 #endif
 145
 146         /* Device Filesystem */
 147 #if DEVFS
 148         { &devfs_vfsops, "devfs", 19, 0, 0, NULL, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 149 #endif
 150
 151         {0},
 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 };
 166
 167 /*
 168  * Initially the size of the list, vfs_init will set maxvfsconf
 169  * to the highest defined type number.
 170  */
 171 int maxvfsslots = sizeof(vfsconflist) / sizeof (struct vfsconf);
 172 int numused_vfsslots = 0;
 173 int maxvfsconf = sizeof(vfsconflist) / sizeof (struct vfsconf);
 174 struct vfstable *vfsconf = vfsconflist;
 175
 176 /*
 177  *
 178  * vfs_opv_descs enumerates the list of vnode classes, each with it's own
 179  * vnode operation vector.  It is consulted at system boot to build operation
 180  * vectors.  It is NULL terminated.
 181  *
 182  */
 183 #if FFS
 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 #endif
 188 extern struct vnodeopv_desc mfs_vnodeop_opv_desc;
 189 extern struct vnodeopv_desc dead_vnodeop_opv_desc;
 190 extern struct vnodeopv_desc fifo_vnodeop_opv_desc;
 191 extern struct vnodeopv_desc spec_vnodeop_opv_desc;
 192 extern struct vnodeopv_desc nfsv2_vnodeop_opv_desc;
 193 extern struct vnodeopv_desc spec_nfsv2nodeop_opv_desc;
 194 extern struct vnodeopv_desc fifo_nfsv2nodeop_opv_desc;
 195 extern struct vnodeopv_desc fdesc_vnodeop_opv_desc;
 196 extern struct vnodeopv_desc null_vnodeop_opv_desc;
 197 extern struct vnodeopv_desc hfs_vnodeop_opv_desc;
 198 extern struct vnodeopv_desc hfs_specop_opv_desc;
 199 extern struct vnodeopv_desc hfs_fifoop_opv_desc;
 200 extern struct vnodeopv_desc volfs_vnodeop_opv_desc;
 201 extern struct vnodeopv_desc cd9660_vnodeop_opv_desc;
 202 extern struct vnodeopv_desc cd9660_cdxaop_opv_desc;
 203 extern struct vnodeopv_desc cd9660_specop_opv_desc;
 204 extern struct vnodeopv_desc cd9660_fifoop_opv_desc;
 205 extern struct vnodeopv_desc union_vnodeop_opv_desc;
 206 extern struct vnodeopv_desc devfs_vnodeop_opv_desc;
 207 extern struct vnodeopv_desc devfs_spec_vnodeop_opv_desc;
 208
 209 struct vnodeopv_desc *vfs_opv_descs[] = {
 210 #if FFS
 211         &ffs_vnodeop_opv_desc,
 212         &ffs_specop_opv_desc,
 213 #if FIFO
 214         &ffs_fifoop_opv_desc,
 215 #endif
 216 #endif
 217         &dead_vnodeop_opv_desc,
 218 #if FIFO
 219         &fifo_vnodeop_opv_desc,
 220 #endif
 221         &spec_vnodeop_opv_desc,
 222 #if MFS
 223         &mfs_vnodeop_opv_desc,
 224 #endif
 225 #if NFSCLIENT
 226         &nfsv2_vnodeop_opv_desc,
 227         &spec_nfsv2nodeop_opv_desc,
 228 #if FIFO
 229         &fifo_nfsv2nodeop_opv_desc,
 230 #endif
 231 #endif
 232 #if FDESC
 233         &fdesc_vnodeop_opv_desc,
 234 #endif
 235 #if NULLFS
 236         &null_vnodeop_opv_desc,
 237 #endif
 238 #if HFS
 239         &hfs_vnodeop_opv_desc,
 240         &hfs_specop_opv_desc,
 241 #if FIFO
 242         &hfs_fifoop_opv_desc,
 243 #endif
 244 #endif
 245 #if CD9660
 246         &cd9660_vnodeop_opv_desc,
 247         &cd9660_cdxaop_opv_desc,
 248         &cd9660_specop_opv_desc,
 249 #if FIFO
 250         &cd9660_fifoop_opv_desc,
 251 #endif
 252 #endif
 253 #if UNION
 254         &union_vnodeop_opv_desc,
 255 #endif
 256 #if VOLFS
 257         &volfs_vnodeop_opv_desc,
 258 #endif
 259 #if DEVFS
 260         &devfs_vnodeop_opv_desc,
 261         &devfs_spec_vnodeop_opv_desc,
 262 #endif
 263         NULL
 264 };