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 |
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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, |
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23 | * Please see the License for the specific language governing rights and |
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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 | |