bsd/vfs/vfs_conf.c

   1 /*
   2  * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_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
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  31 /*
  32  * Copyright (c) 1989, 1993, 1995
  33  *      The Regents of the University of California.  All rights reserved.
  34  *
  35  * Redistribution and use in source and binary forms, with or without
  36  * modification, are permitted provided that the following conditions
  37  * are met:
  38  * 1. Redistributions of source code must retain the above copyright
  39  *    notice, this list of conditions and the following disclaimer.
  40  * 2. Redistributions in binary form must reproduce the above copyright
  41  *    notice, this list of conditions and the following disclaimer in the
  42  *    documentation and/or other materials provided with the distribution.
  43  * 3. All advertising materials mentioning features or use of this software
  44  *    must display the following acknowledgement:
  45  *      This product includes software developed by the University of
  46  *      California, Berkeley and its contributors.
  47  * 4. Neither the name of the University nor the names of its contributors
  48  *    may be used to endorse or promote products derived from this software
  49  *    without specific prior written permission.
  50  *
  51  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  52  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  53  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  54  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  55  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  56  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  57  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  58  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  59  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  60  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  61  * SUCH DAMAGE.
  62  *
  63  *      @(#)vfs_conf.c  8.11 (Berkeley) 5/10/95
  64  */
  65
  66 #include <sys/param.h>
  67 #include <sys/systm.h>
  68 #include <sys/mount_internal.h>
  69 #include <sys/vnode_internal.h>
  70
  71 /*
  72  * These define the root filesystem, device, and root filesystem type.
  73  */
  74 struct mount *rootfs;
  75 struct vnode *rootvnode;
  76 int (*mountroot)() = NULL;
  77
  78 /*
  79  * Set up the initial array of known filesystem types.
  80  */
  81 extern  struct vfsops ufs_vfsops;
  82 #if FFS
  83 extern  int ffs_mountroot();
  84 #endif
  85 extern  struct vfsops mfs_vfsops;
  86 extern  int mfs_mountroot();
  87 extern  struct vfsops hfs_vfsops;
  88 extern  int hfs_mountroot();
  89 extern  struct vfsops volfs_vfsops;
  90 extern  struct vfsops cd9660_vfsops;
  91 extern  int cd9660_mountroot();
  92 extern  struct vfsops nfs_vfsops;
  93 extern  int nfs_mountroot();
  94 extern  struct vfsops afs_vfsops;
  95 extern  struct vfsops null_vfsops;
  96 extern  struct vfsops union_vfsops;
  97 extern  struct vfsops fdesc_vfsops;
  98 extern  struct vfsops devfs_vfsops;
  99
 100 /*
 101  * Set up the filesystem operations for vnodes.
 102  */
 103 static struct vfstable vfsconflist[] = {
 104         /* HFS/HFS+ Filesystem */
 105 #if HFS
 106         { &hfs_vfsops, "hfs", 17, 0, MNT_LOCAL | MNT_DOVOLFS, hfs_mountroot, NULL, 0, {0}, VFC_VFSLOCALARGS, 0, 0 },
 107 #endif
 108
 109         /* Fast Filesystem */
 110 #if FFS
 111         { &ufs_vfsops, "ufs", 1, 0, MNT_LOCAL, ffs_mountroot, NULL, 0, {0}, VFC_VFSLOCALARGS, 0, 0  },
 112 #endif
 113
 114         /* ISO9660 (aka CDROM) Filesystem */
 115 #if CD9660
 116         { &cd9660_vfsops, "cd9660", 14, 0, MNT_LOCAL, cd9660_mountroot, NULL, 0, {0}, VFC_VFSLOCALARGS, 0, 0 },
 117 #endif
 118
 119         /* Memory-based Filesystem */
 120 #if MFS
 121         { &mfs_vfsops, "mfs", 3, 0, MNT_LOCAL, mfs_mountroot, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 122 #endif
 123
 124         /* Sun-compatible Network Filesystem */
 125 #if NFSCLIENT
 126         { &nfs_vfsops, "nfs", 2, 0, 0, nfs_mountroot, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 127 #endif
 128
 129         /* Andrew Filesystem */
 130 #if AFS
 131         { &afs_vfsops, "andrewfs", 13, 0, 0, afs_mountroot, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 132 #endif
 133
 134         /* Loopback (Minimal) Filesystem Layer */
 135 #if NULLFS
 136         { &null_vfsops, "loopback", 9, 0, 0, NULL, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 137 #endif
 138
 139         /* Union (translucent) Filesystem */
 140 #if UNION
 141         { &union_vfsops, "union", 15, 0, 0, NULL, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 142 #endif
 143
 144         /* File Descriptor Filesystem */
 145 #if FDESC
 146         { &fdesc_vfsops, "fdesc", 7, 0, 0, NULL, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 147 #endif
 148
 149         /* Volume ID Filesystem */
 150 #if VOLFS
 151         { &volfs_vfsops, "volfs", 18, 0, 0, NULL, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 152 #endif
 153
 154         /* Device Filesystem */
 155 #if DEVFS
 156         { &devfs_vfsops, "devfs", 19, 0, 0, NULL, NULL, 0, {0}, VFC_VFSGENERICARGS , 0, 0},
 157 #endif
 158
 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         {0},
 172         {0}
 173 };
 174
 175 /*
 176  * Initially the size of the list, vfs_init will set maxvfsconf
 177  * to the highest defined type number.
 178  */
 179 int maxvfsslots = sizeof(vfsconflist) / sizeof (struct vfsconf);
 180 int numused_vfsslots = 0;
 181 int maxvfsconf = sizeof(vfsconflist) / sizeof (struct vfsconf);
 182 struct vfstable *vfsconf = vfsconflist;
 183
 184 /*
 185  *
 186  * vfs_opv_descs enumerates the list of vnode classes, each with it's own
 187  * vnode operation vector.  It is consulted at system boot to build operation
 188  * vectors.  It is NULL terminated.
 189  *
 190  */
 191 #if FFS
 192 extern struct vnodeopv_desc ffs_vnodeop_opv_desc;
 193 extern struct vnodeopv_desc ffs_specop_opv_desc;
 194 extern struct vnodeopv_desc ffs_fifoop_opv_desc;
 195 #endif
 196 extern struct vnodeopv_desc mfs_vnodeop_opv_desc;
 197 extern struct vnodeopv_desc dead_vnodeop_opv_desc;
 198 extern struct vnodeopv_desc fifo_vnodeop_opv_desc;
 199 extern struct vnodeopv_desc spec_vnodeop_opv_desc;
 200 extern struct vnodeopv_desc nfsv2_vnodeop_opv_desc;
 201 extern struct vnodeopv_desc spec_nfsv2nodeop_opv_desc;
 202 extern struct vnodeopv_desc fifo_nfsv2nodeop_opv_desc;
 203 extern struct vnodeopv_desc fdesc_vnodeop_opv_desc;
 204 extern struct vnodeopv_desc null_vnodeop_opv_desc;
 205 extern struct vnodeopv_desc hfs_vnodeop_opv_desc;
 206 extern struct vnodeopv_desc hfs_specop_opv_desc;
 207 extern struct vnodeopv_desc hfs_fifoop_opv_desc;
 208 extern struct vnodeopv_desc volfs_vnodeop_opv_desc;
 209 extern struct vnodeopv_desc cd9660_vnodeop_opv_desc;
 210 extern struct vnodeopv_desc cd9660_cdxaop_opv_desc;
 211 extern struct vnodeopv_desc cd9660_specop_opv_desc;
 212 extern struct vnodeopv_desc cd9660_fifoop_opv_desc;
 213 extern struct vnodeopv_desc union_vnodeop_opv_desc;
 214 extern struct vnodeopv_desc devfs_vnodeop_opv_desc;
 215 extern struct vnodeopv_desc devfs_spec_vnodeop_opv_desc;
 216
 217 struct vnodeopv_desc *vfs_opv_descs[] = {
 218 #if FFS
 219         &ffs_vnodeop_opv_desc,
 220         &ffs_specop_opv_desc,
 221 #if FIFO
 222         &ffs_fifoop_opv_desc,
 223 #endif
 224 #endif
 225         &dead_vnodeop_opv_desc,
 226 #if FIFO
 227         &fifo_vnodeop_opv_desc,
 228 #endif
 229         &spec_vnodeop_opv_desc,
 230 #if MFS
 231         &mfs_vnodeop_opv_desc,
 232 #endif
 233 #if NFSCLIENT
 234         &nfsv2_vnodeop_opv_desc,
 235         &spec_nfsv2nodeop_opv_desc,
 236 #if FIFO
 237         &fifo_nfsv2nodeop_opv_desc,
 238 #endif
 239 #endif
 240 #if FDESC
 241         &fdesc_vnodeop_opv_desc,
 242 #endif
 243 #if NULLFS
 244         &null_vnodeop_opv_desc,
 245 #endif
 246 #if HFS
 247         &hfs_vnodeop_opv_desc,
 248         &hfs_specop_opv_desc,
 249 #if FIFO
 250         &hfs_fifoop_opv_desc,
 251 #endif
 252 #endif
 253 #if CD9660
 254         &cd9660_vnodeop_opv_desc,
 255         &cd9660_cdxaop_opv_desc,
 256         &cd9660_specop_opv_desc,
 257 #if FIFO
 258         &cd9660_fifoop_opv_desc,
 259 #endif
 260 #endif
 261 #if UNION
 262         &union_vnodeop_opv_desc,
 263 #endif
 264 #if VOLFS
 265         &volfs_vnodeop_opv_desc,
 266 #endif
 267 #if DEVFS
 268         &devfs_vnodeop_opv_desc,
 269         &devfs_spec_vnodeop_opv_desc,
 270 #endif
 271         NULL
 272 };