1 /* 2 * Copyright (c) 2000-2019 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_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 License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ 29 /* 30 * Copyright (c) 1989, 1993, 1995 31 * The Regents of the University of California. All rights reserved. 32 * 33 * Redistribution and use in source and binary forms, with or without 34 * modification, are permitted provided that the following conditions 35 * are met: 36 * 1. Redistributions of source code must retain the above copyright 37 * notice, this list of conditions and the following disclaimer. 38 * 2. Redistributions in binary form must reproduce the above copyright 39 * notice, this list of conditions and the following disclaimer in the 40 * documentation and/or other materials provided with the distribution. 41 * 3. All advertising materials mentioning features or use of this software 42 * must display the following acknowledgement: 43 * This product includes software developed by the University of 44 * California, Berkeley and its contributors. 45 * 4. Neither the name of the University nor the names of its contributors 46 * may be used to endorse or promote products derived from this software 47 * without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 59 * SUCH DAMAGE. 60 * 61 * @(#)vfs_conf.c 8.11 (Berkeley) 5/10/95 62 */ 63 /* 64 * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce 65 * support for mandatory and extensible security protections. This notice 66 * is included in support of clause 2.2 (b) of the Apple Public License, 67 * Version 2.0. 68 */ 69 70 #include <sys/param.h> 71 #include <sys/systm.h> 72 #include <sys/mount_internal.h> 73 #include <sys/vnode_internal.h> 74 75 #include <nfs/nfs_conf.h> 76 77 /* 78 * These define the root filesystem, device, and root filesystem type. 79 */ 80 struct mount *rootfs; 81 struct vnode *rootvnode; 82 83 #ifdef CONFIG_IMGSRC_ACCESS 84 struct vnode *imgsrc_rootvnodes[MAX_IMAGEBOOT_NESTING]; /* [0] -> source volume, [1] -> first disk image */ 85 #endif /* CONFIG_IMGSRC_ACCESS */ 86 87 int (*mountroot)(void) = NULL; 88 89 /* 90 * Set up the initial array of known filesystem types. 91 */ 92 extern struct vfsops mfs_vfsops; 93 extern int mfs_mountroot(mount_t, vnode_t, vfs_context_t); /* dead */ 94 extern struct vfsops afs_vfsops; 95 extern struct vfsops null_vfsops; 96 extern struct vfsops devfs_vfsops; 97 extern const struct vfsops routefs_vfsops; 98 extern struct vfsops nullfs_vfsops; 99 extern struct vfsops bindfs_vfsops; 100 101 #if MOCKFS 102 extern struct vfsops mockfs_vfsops; 103 extern int mockfs_mountroot(mount_t, vnode_t, vfs_context_t); 104 #endif /* MOCKFS */ 105 106 enum fs_type_num { 107 FT_DEVFS = 19, 108 FT_SYNTHFS = 20, 109 FT_ROUTEFS = 21, 110 FT_NULLFS = 22, 111 FT_BINDFS = 23, 112 FT_MOCKFS = 0x6D6F636B 113 }; 114 115 int fstypenumstart = FT_BINDFS + 1; 116 /* 117 * Set up the filesystem operations for vnodes. 118 */ 119 static struct vfstable vfstbllist[] = { 120 /* Device Filesystem */ 121 #if DEVFS 122 #if CONFIG_MACF 123 { 124 .vfc_vfsops = &devfs_vfsops, 125 .vfc_name = "devfs", 126 .vfc_typenum = FT_DEVFS, 127 .vfc_refcount = 0, 128 .vfc_flags = MNT_MULTILABEL, 129 .vfc_mountroot = NULL, 130 .vfc_next = NULL, 131 .vfc_reserved1 = 0, 132 .vfc_reserved2 = 0, 133 .vfc_vfsflags = VFC_VFSGENERICARGS | VFC_VFS64BITREADY, 134 .vfc_descptr = NULL, 135 .vfc_descsize = 0, 136 .vfc_sysctl = NULL 137 }, 138 #else /* !CONFIG_MAC */ 139 { 140 .vfc_vfsops = &devfs_vfsops, 141 .vfc_name = "devfs", 142 .vfc_typenum = FT_DEVFS, 143 .vfc_refcount = 0, 144 .vfc_flags = 0, 145 .vfc_mountroot = NULL, 146 .vfc_next = NULL, 147 .vfc_reserved1 = 0, 148 .vfc_reserved2 = 0, 149 .vfc_vfsflags = VFC_VFSGENERICARGS | VFC_VFS64BITREADY, 150 .vfc_descptr = NULL, 151 .vfc_descsize = 0, 152 .vfc_sysctl = NULL 153 }, 154 #endif /* CONFIG_MAC */ 155 #endif /* DEVFS */ 156 157 #ifndef __LP64__ 158 #endif /* __LP64__ */ 159 160 #if NULLFS 161 { 162 .vfc_vfsops = &nullfs_vfsops, 163 .vfc_name = "nullfs", 164 .vfc_typenum = FT_NULLFS, 165 .vfc_refcount = 0, 166 .vfc_flags = MNT_DONTBROWSE | MNT_RDONLY, 167 .vfc_mountroot = NULL, 168 .vfc_next = NULL, 169 .vfc_reserved1 = 0, 170 .vfc_reserved2 = 0, 171 .vfc_vfsflags = VFC_VFS64BITREADY, 172 .vfc_descptr = NULL, 173 .vfc_descsize = 0, 174 .vfc_sysctl = NULL 175 }, 176 #endif /* NULLFS */ 177 178 #if BINDFS 179 { 180 .vfc_vfsops = &bindfs_vfsops, 181 .vfc_name = "bindfs", 182 .vfc_typenum = FT_BINDFS, 183 .vfc_refcount = 0, 184 .vfc_flags = MNT_DONTBROWSE | MNT_RDONLY, 185 .vfc_mountroot = NULL, 186 .vfc_next = NULL, 187 .vfc_reserved1 = 0, 188 .vfc_reserved2 = 0, 189 .vfc_vfsflags = VFC_VFS64BITREADY, 190 .vfc_descptr = NULL, 191 .vfc_descsize = 0, 192 .vfc_sysctl = NULL 193 }, 194 #endif /* BINDFS */ 195 196 #if MOCKFS 197 /* If we are configured for it, mockfs should always be the last standard entry (and thus the last FS we attempt mountroot with) */ 198 { 199 .vfc_vfsops = &mockfs_vfsops, 200 .vfc_name = "mockfs", 201 .vfc_typenum = FT_MOCKFS, 202 .vfc_refcount = 0, 203 .vfc_flags = MNT_LOCAL, 204 .vfc_mountroot = mockfs_mountroot, 205 .vfc_next = NULL, 206 .vfc_reserved1 = 0, 207 .vfc_reserved2 = 0, 208 .vfc_vfsflags = VFC_VFSGENERICARGS, 209 .vfc_descptr = NULL, 210 .vfc_descsize = 0, 211 .vfc_sysctl = NULL 212 }, 213 #endif /* MOCKFS */ 214 215 #if ROUTEFS 216 /* If we are configured for it, mockfs should always be the last standard entry (and thus the last FS we attempt mountroot with) */ 217 { 218 .vfc_vfsops = &routefs_vfsops, 219 .vfc_name = "routefs", 220 .vfc_typenum = FT_ROUTEFS, 221 .vfc_refcount = 0, 222 .vfc_flags = MNT_LOCAL, 223 .vfc_mountroot = NULL, 224 .vfc_next = NULL, 225 .vfc_reserved1 = 0, 226 .vfc_reserved2 = 0, 227 .vfc_vfsflags = VFC_VFSGENERICARGS | VFC_VFS64BITREADY, 228 .vfc_descptr = NULL, 229 .vfc_descsize = 0, 230 .vfc_sysctl = NULL 231 }, 232 #endif /* ROUTEFS */ 233 234 { 235 .vfc_vfsops = NULL, 236 .vfc_name = "<unassigned>", 237 .vfc_typenum = 0, 238 .vfc_refcount = 0, 239 .vfc_flags = 0, 240 .vfc_mountroot = NULL, 241 .vfc_next = NULL, 242 .vfc_reserved1 = 0, 243 .vfc_reserved2 = 0, 244 .vfc_vfsflags = 0, 245 .vfc_descptr = NULL, 246 .vfc_descsize = 0, 247 .vfc_sysctl = NULL 248 }, 249 { 250 .vfc_vfsops = NULL, 251 .vfc_name = "<unassigned>", 252 .vfc_typenum = 0, 253 .vfc_refcount = 0, 254 .vfc_flags = 0, 255 .vfc_mountroot = NULL, 256 .vfc_next = NULL, 257 .vfc_reserved1 = 0, 258 .vfc_reserved2 = 0, 259 .vfc_vfsflags = 0, 260 .vfc_descptr = NULL, 261 .vfc_descsize = 0, 262 .vfc_sysctl = NULL 263 }, 264 }; 265 266 /* 267 * vfs_init will set maxvfstypenum to the highest defined type number. 268 */ 269 const int maxvfsslots = sizeof(vfstbllist) / sizeof(struct vfstable); 270 int numused_vfsslots = 0; 271 int numregistered_fses = 0; 272 int maxvfstypenum = VT_NON + 1; 273 struct vfstable *vfsconf = vfstbllist; 274 275 /* 276 * 277 * vfs_opv_descs enumerates the list of vnode classes, each with it's own 278 * vnode operation vector. It is consulted at system boot to build operation 279 * vectors. It is NULL terminated. 280 * 281 */ 282 extern struct vnodeopv_desc mfs_vnodeop_opv_desc; 283 extern const struct vnodeopv_desc dead_vnodeop_opv_desc; 284 #if FIFO && SOCKETS 285 extern const struct vnodeopv_desc fifo_vnodeop_opv_desc; 286 #endif /* SOCKETS */ 287 extern const struct vnodeopv_desc spec_vnodeop_opv_desc; 288 extern struct vnodeopv_desc null_vnodeop_opv_desc; 289 extern struct vnodeopv_desc devfs_vnodeop_opv_desc; 290 extern struct vnodeopv_desc devfs_spec_vnodeop_opv_desc; 291 #if FDESC 292 extern struct vnodeopv_desc devfs_devfd_vnodeop_opv_desc; 293 extern const struct vnodeopv_desc devfs_fdesc_vnodeop_opv_desc; 294 #endif /* FDESC */ 295 296 #if MOCKFS 297 extern const struct vnodeopv_desc mockfs_vnodeop_opv_desc; 298 #endif /* MOCKFS */ 299 300 extern const struct vnodeopv_desc nullfs_vnodeop_opv_desc; 301 extern const struct vnodeopv_desc bindfs_vnodeop_opv_desc; 302 303 const struct vnodeopv_desc *vfs_opv_descs[] = { 304 &dead_vnodeop_opv_desc, 305 #if FIFO && SOCKETS 306 &fifo_vnodeop_opv_desc, 307 #endif 308 &spec_vnodeop_opv_desc, 309 #if MFS 310 &mfs_vnodeop_opv_desc, 311 #endif 312 #if DEVFS 313 &devfs_vnodeop_opv_desc, 314 &devfs_spec_vnodeop_opv_desc, 315 #if FDESC 316 &devfs_devfd_vnodeop_opv_desc, 317 &devfs_fdesc_vnodeop_opv_desc, 318 #endif /* FDESC */ 319 #endif /* DEVFS */ 320 #if NULLFS 321 &nullfs_vnodeop_opv_desc, 322 #endif /* NULLFS */ 323 #if BINDFS 324 &bindfs_vnodeop_opv_desc, 325 #endif /* BINDFS */ 326 #if MOCKFS 327 &mockfs_vnodeop_opv_desc, 328 #endif /* MOCKFS */ 329 NULL 330 }; 331