bsd/vfs/vfs_conf.c

   1 /*
   2  * Copyright (c) 2000-2002 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.h>
  61 #include <sys/vnode.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 extern  int ffs_mountroot();
  75 extern  struct vfsops mfs_vfsops;
  76 extern  int mfs_mountroot();
  77 extern  struct vfsops hfs_vfsops;
  78 extern  int hfs_mountroot();
  79 extern  struct vfsops volfs_vfsops;
  80 extern  struct vfsops cd9660_vfsops;
  81 extern  int cd9660_mountroot();
  82 extern  struct vfsops nfs_vfsops;
  83 extern  int nfs_mountroot();
  84 extern  struct vfsops afs_vfsops;
  85 extern  struct vfsops null_vfsops;
  86 extern  struct vfsops union_vfsops;
  87 extern  struct vfsops fdesc_vfsops;
  88 extern  struct vfsops devfs_vfsops;
  89
  90 /*
  91  * Set up the filesystem operations for vnodes.
  92  */
  93 static struct vfsconf vfsconflist[] = {
  94         /* HFS/HFS+ Filesystem */
  95 #if HFS
  96         { &hfs_vfsops, "hfs", 17, 0, MNT_LOCAL | MNT_DOVOLFS, hfs_mountroot, NULL },
  97 #endif
  98
  99         /* Fast Filesystem */
 100 #if FFS
 101         { &ufs_vfsops, "ufs", 1, 0, MNT_LOCAL, ffs_mountroot, NULL },
 102 #endif
 103
 104         /* ISO9660 (aka CDROM) Filesystem */
 105 #if CD9660
 106         { &cd9660_vfsops, "cd9660", 14, 0, MNT_LOCAL | MNT_DOVOLFS, cd9660_mountroot, NULL },
 107 #endif
 108
 109         /* Memory-based Filesystem */
 110 #if MFS
 111         { &mfs_vfsops, "mfs", 3, 0, MNT_LOCAL, mfs_mountroot, NULL },
 112 #endif
 113
 114         /* Sun-compatible Network Filesystem */
 115 #if NFSCLIENT
 116         { &nfs_vfsops, "nfs", 2, 0, 0, nfs_mountroot, NULL },
 117 #endif
 118
 119         /* Andrew Filesystem */
 120 #if AFS
 121         { &afs_vfsops, "andrewfs", 13, 0, 0, afs_mountroot, NULL },
 122 #endif
 123
 124         /* Loopback (Minimal) Filesystem Layer */
 125 #if NULLFS
 126         { &null_vfsops, "loopback", 9, 0, 0, NULL, NULL },
 127 #endif
 128
 129         /* Union (translucent) Filesystem */
 130 #if UNION
 131         { &union_vfsops, "union", 15, 0, 0, NULL, NULL },
 132 #endif
 133
 134         /* File Descriptor Filesystem */
 135 #if FDESC
 136         { &fdesc_vfsops, "fdesc", 7, 0, 0, NULL, NULL },
 137 #endif
 138
 139         /* Volume ID Filesystem */
 140 #if VOLFS
 141         { &volfs_vfsops, "volfs", 18, 0, 0, NULL, NULL },
 142 #endif
 143
 144         /* Device Filesystem */
 145 #if DEVFS
 146         { &devfs_vfsops, "devfs", 19, 0, 0, NULL, NULL },
 147 #endif
 148
 149         {0},
 150         {0},
 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 };
 164
 165 /*
 166  * Initially the size of the list, vfs_init will set maxvfsconf
 167  * to the highest defined type number.
 168  */
 169 int maxvfsslots = sizeof(vfsconflist) / sizeof (struct vfsconf);
 170 int numused_vfsslots = 0;
 171 int maxvfsconf = sizeof(vfsconflist) / sizeof (struct vfsconf);
 172 struct vfsconf *vfsconf = vfsconflist;
 173
 174 /*
 175  *
 176  * vfs_opv_descs enumerates the list of vnode classes, each with it's own
 177  * vnode operation vector.  It is consulted at system boot to build operation
 178  * vectors.  It is NULL terminated.
 179  *
 180  */
 181 extern struct vnodeopv_desc ffs_vnodeop_opv_desc;
 182 extern struct vnodeopv_desc ffs_specop_opv_desc;
 183 extern struct vnodeopv_desc ffs_fifoop_opv_desc;
 184 extern struct vnodeopv_desc mfs_vnodeop_opv_desc;
 185 extern struct vnodeopv_desc dead_vnodeop_opv_desc;
 186 extern struct vnodeopv_desc fifo_vnodeop_opv_desc;
 187 extern struct vnodeopv_desc spec_vnodeop_opv_desc;
 188 extern struct vnodeopv_desc nfsv2_vnodeop_opv_desc;
 189 extern struct vnodeopv_desc spec_nfsv2nodeop_opv_desc;
 190 extern struct vnodeopv_desc fifo_nfsv2nodeop_opv_desc;
 191 extern struct vnodeopv_desc fdesc_vnodeop_opv_desc;
 192 extern struct vnodeopv_desc null_vnodeop_opv_desc;
 193 extern struct vnodeopv_desc hfs_vnodeop_opv_desc;
 194 extern struct vnodeopv_desc hfs_specop_opv_desc;
 195 extern struct vnodeopv_desc hfs_fifoop_opv_desc;
 196 extern struct vnodeopv_desc volfs_vnodeop_opv_desc;
 197 extern struct vnodeopv_desc cd9660_vnodeop_opv_desc;
 198 extern struct vnodeopv_desc cd9660_specop_opv_desc;
 199 extern struct vnodeopv_desc cd9660_fifoop_opv_desc;
 200 extern struct vnodeopv_desc union_vnodeop_opv_desc;
 201 extern struct vnodeopv_desc devfs_vnodeop_opv_desc;
 202 extern struct vnodeopv_desc devfs_spec_vnodeop_opv_desc;
 203
 204 struct vnodeopv_desc *vfs_opv_descs[] = {
 205         &ffs_vnodeop_opv_desc,
 206         &ffs_specop_opv_desc,
 207 #if FIFO
 208         &ffs_fifoop_opv_desc,
 209 #endif
 210         &dead_vnodeop_opv_desc,
 211 #if FIFO
 212         &fifo_vnodeop_opv_desc,
 213 #endif
 214         &spec_vnodeop_opv_desc,
 215 #if MFS
 216         &mfs_vnodeop_opv_desc,
 217 #endif
 218 #if NFSCLIENT
 219         &nfsv2_vnodeop_opv_desc,
 220         &spec_nfsv2nodeop_opv_desc,
 221 #if FIFO
 222         &fifo_nfsv2nodeop_opv_desc,
 223 #endif
 224 #endif
 225 #if FDESC
 226         &fdesc_vnodeop_opv_desc,
 227 #endif
 228 #if NULLFS
 229         &null_vnodeop_opv_desc,
 230 #endif
 231 #if HFS
 232         &hfs_vnodeop_opv_desc,
 233         &hfs_specop_opv_desc,
 234 #if FIFO
 235         &hfs_fifoop_opv_desc,
 236 #endif
 237 #endif
 238 #if CD9660
 239         &cd9660_vnodeop_opv_desc,
 240         &cd9660_specop_opv_desc,
 241 #if FIFO
 242         &cd9660_fifoop_opv_desc,
 243 #endif
 244 #endif
 245 #if UNION
 246         &union_vnodeop_opv_desc,
 247 #endif
 248 #if VOLFS
 249         &volfs_vnodeop_opv_desc,
 250 #endif
 251 #if DEVFS
 252         &devfs_vnodeop_opv_desc,
 253         &devfs_spec_vnodeop_opv_desc,
 254 #endif
 255         NULL
 256 };