bsd/vfs/vfs_conf.c

   1 /*
   2  * Copyright (c) 2000 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 lfs_vfsops;
  76 extern  int lfs_mountroot();
  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 procfs_vfsops;
  88 extern  struct vfsops null_vfsops;
  89 extern  struct vfsops union_vfsops;
  90 extern  struct vfsops umap_vfsops;
  91 extern  struct vfsops portal_vfsops;
  92 extern  struct vfsops fdesc_vfsops;
  93 extern  struct vfsops kernfs_vfsops;
  94 extern  struct vfsops devfs_vfsops;
  95
  96 /*
  97  * Set up the filesystem operations for vnodes.
  98  */
  99 static struct vfsconf vfsconflist[] = {
 100         /* HFS/HFS+ Filesystem */
 101 #if HFS
 102         { &hfs_vfsops, "hfs", 17, 0, MNT_LOCAL | MNT_DOVOLFS, hfs_mountroot, NULL },
 103 #endif
 104
 105         /* Fast Filesystem */
 106 #if FFS
 107         { &ufs_vfsops, "ufs", 1, 0, MNT_LOCAL, ffs_mountroot, NULL },
 108 #endif
 109
 110         /* ISO9660 (aka CDROM) Filesystem */
 111 #if CD9660
 112         { &cd9660_vfsops, "cd9660", 14, 0, MNT_LOCAL | MNT_DOVOLFS, cd9660_mountroot, NULL },
 113 #endif
 114
 115         /* Log-based Filesystem */
 116 #if LFS
 117         { &lfs_vfsops, "lfs", 5, 0, MNT_LOCAL, lfs_mountroot, NULL },
 118 #endif
 119
 120         /* Memory-based Filesystem */
 121 #if MFS
 122         { &mfs_vfsops, "mfs", 3, 0, MNT_LOCAL, mfs_mountroot, NULL },
 123 #endif
 124
 125         /* Sun-compatible Network Filesystem */
 126 #if NFSCLIENT
 127         { &nfs_vfsops, "nfs", 2, 0, 0, nfs_mountroot, NULL },
 128 #endif
 129
 130         /* Andrew Filesystem */
 131 #if AFS
 132         { &afs_vfsops, "andrewfs", 13, 0, 0, afs_mountroot, NULL },
 133 #endif
 134
 135         /* /proc Filesystem */
 136 #if PROCFS
 137         { &procfs_vfsops, "procfs", 12, 0, 0, NULL, NULL },
 138 #endif
 139
 140         /* Loopback (Minimal) Filesystem Layer */
 141 #if NULLFS
 142         { &null_vfsops, "loopback", 9, 0, 0, NULL, NULL },
 143 #endif
 144
 145         /* Union (translucent) Filesystem */
 146 #if UNION
 147         { &union_vfsops, "union", 15, 0, 0, NULL, NULL },
 148 #endif
 149
 150         /* User/Group Identifer Remapping Filesystem */
 151 #if UMAPFS
 152         { &umap_vfsops, "umap", 10, 0, 0, NULL, NULL },
 153 #endif
 154
 155         /* Portal Filesystem */
 156 #if PORTAL
 157         { &portal_vfsops, "portal", 8, 0, 0, NULL, NULL },
 158 #endif
 159
 160         /* File Descriptor Filesystem */
 161 #if FDESC
 162         { &fdesc_vfsops, "fdesc", 7, 0, 0, NULL, NULL },
 163 #endif
 164
 165         /* Kernel Information Filesystem */
 166 #if KERNFS
 167         { &kernfs_vfsops, "kernfs", 11, 0, 0, NULL, NULL },
 168 #endif
 169
 170         /* Volume ID Filesystem */
 171 #if VOLFS
 172         { &volfs_vfsops, "volfs", 18, 0, 0, NULL, NULL },
 173 #endif
 174         /* Device Filesystem */
 175 #if DEVFS
 176         { &devfs_vfsops, "devfs", 19, 0, 0, NULL, NULL },
 177 #endif
 178         {0},
 179         {0},
 180         {0},
 181         {0},
 182         {0},
 183         {0},
 184         {0},
 185         {0},
 186         {0},
 187         {0}
 188 };
 189
 190 /*
 191  * Initially the size of the list, vfs_init will set maxvfsconf
 192  * to the highest defined type number.
 193  */
 194 int maxvfsslots = sizeof(vfsconflist) / sizeof (struct vfsconf);
 195 int numused_vfsslots = 0;
 196 int maxvfsconf = sizeof(vfsconflist) / sizeof (struct vfsconf);
 197 struct vfsconf *vfsconf = vfsconflist;
 198
 199 /*
 200  *
 201  * vfs_opv_descs enumerates the list of vnode classes, each with it's own
 202  * vnode operation vector.  It is consulted at system boot to build operation
 203  * vectors.  It is NULL terminated.
 204  *
 205  */
 206 extern struct vnodeopv_desc ffs_vnodeop_opv_desc;
 207 extern struct vnodeopv_desc ffs_specop_opv_desc;
 208 extern struct vnodeopv_desc ffs_fifoop_opv_desc;
 209 extern struct vnodeopv_desc lfs_vnodeop_opv_desc;
 210 extern struct vnodeopv_desc lfs_specop_opv_desc;
 211 extern struct vnodeopv_desc lfs_fifoop_opv_desc;
 212 extern struct vnodeopv_desc mfs_vnodeop_opv_desc;
 213 extern struct vnodeopv_desc dead_vnodeop_opv_desc;
 214 extern struct vnodeopv_desc fifo_vnodeop_opv_desc;
 215 extern struct vnodeopv_desc spec_vnodeop_opv_desc;
 216 extern struct vnodeopv_desc nfsv2_vnodeop_opv_desc;
 217 extern struct vnodeopv_desc spec_nfsv2nodeop_opv_desc;
 218 extern struct vnodeopv_desc fifo_nfsv2nodeop_opv_desc;
 219 extern struct vnodeopv_desc fdesc_vnodeop_opv_desc;
 220 extern struct vnodeopv_desc portal_vnodeop_opv_desc;
 221 extern struct vnodeopv_desc null_vnodeop_opv_desc;
 222 extern struct vnodeopv_desc umap_vnodeop_opv_desc;
 223 extern struct vnodeopv_desc kernfs_vnodeop_opv_desc;
 224 extern struct vnodeopv_desc procfs_vnodeop_opv_desc;
 225 extern struct vnodeopv_desc hfs_vnodeop_opv_desc;
 226 extern struct vnodeopv_desc hfs_specop_opv_desc;
 227 extern struct vnodeopv_desc hfs_fifoop_opv_desc;
 228 extern struct vnodeopv_desc volfs_vnodeop_opv_desc;
 229 extern struct vnodeopv_desc cd9660_vnodeop_opv_desc;
 230 extern struct vnodeopv_desc cd9660_specop_opv_desc;
 231 extern struct vnodeopv_desc cd9660_fifoop_opv_desc;
 232 extern struct vnodeopv_desc union_vnodeop_opv_desc;
 233 extern struct vnodeopv_desc procfs_vnodeop_opv_desc;
 234 extern struct vnodeopv_desc devfs_vnodeop_opv_desc;
 235 extern struct vnodeopv_desc devfs_spec_vnodeop_opv_desc;
 236
 237 struct vnodeopv_desc *vfs_opv_descs[] = {
 238         &ffs_vnodeop_opv_desc,
 239         &ffs_specop_opv_desc,
 240 #if FIFO
 241         &ffs_fifoop_opv_desc,
 242 #endif
 243         &dead_vnodeop_opv_desc,
 244 #if FIFO
 245         &fifo_vnodeop_opv_desc,
 246 #endif
 247         &spec_vnodeop_opv_desc,
 248 #if LFS
 249         &lfs_vnodeop_opv_desc,
 250         &lfs_specop_opv_desc,
 251 #if FIFO
 252         &lfs_fifoop_opv_desc,
 253 #endif
 254 #endif
 255 #if MFS
 256         &mfs_vnodeop_opv_desc,
 257 #endif
 258 #if NFSCLIENT
 259         &nfsv2_vnodeop_opv_desc,
 260         &spec_nfsv2nodeop_opv_desc,
 261 #if FIFO
 262         &fifo_nfsv2nodeop_opv_desc,
 263 #endif
 264 #endif
 265 #if FDESC
 266         &fdesc_vnodeop_opv_desc,
 267 #endif
 268 #if PORTAL
 269         &portal_vnodeop_opv_desc,
 270 #endif
 271 #if NULLFS
 272         &null_vnodeop_opv_desc,
 273 #endif
 274 #if UMAPFS
 275         &umap_vnodeop_opv_desc,
 276 #endif
 277 #if KERNFS
 278         &kernfs_vnodeop_opv_desc,
 279 #endif
 280 #if PROCFS
 281         &procfs_vnodeop_opv_desc,
 282 #endif
 283 #if HFS
 284         &hfs_vnodeop_opv_desc,
 285         &hfs_specop_opv_desc,
 286 #if FIFO
 287         &hfs_fifoop_opv_desc,
 288 #endif
 289 #endif
 290 #if CD9660
 291         &cd9660_vnodeop_opv_desc,
 292         &cd9660_specop_opv_desc,
 293 #if FIFO
 294         &cd9660_fifoop_opv_desc,
 295 #endif
 296 #endif
 297 #if UNION
 298         &union_vnodeop_opv_desc,
 299 #endif
 300 #if VOLFS
 301         &volfs_vnodeop_opv_desc,
 302 #endif
 303 #if DEVFS
 304         &devfs_vnodeop_opv_desc,
 305         &devfs_spec_vnodeop_opv_desc,
 306 #endif
 307         NULL
 308 };