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490019cf | 1 | /* |
cb323159 | 2 | * Copyright (c) 2019 Apple Inc. All rights reserved. |
490019cf A |
3 | * |
4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ | |
0a7de745 | 5 | * |
490019cf A |
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. | |
0a7de745 | 14 | * |
490019cf A |
15 | * Please obtain a copy of the License at |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. | |
0a7de745 | 17 | * |
490019cf A |
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. | |
0a7de745 | 25 | * |
490019cf A |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
27 | */ | |
28 | ||
29 | #include <sys/param.h> | |
30 | #include <sys/systm.h> | |
31 | #include <sys/kernel.h> | |
32 | #include <sys/vnode_internal.h> | |
33 | #include <sys/proc.h> | |
34 | #include <sys/kauth.h> | |
35 | #include <sys/mount_internal.h> | |
36 | #include <sys/fcntl.h> | |
37 | #include <sys/unistd.h> | |
38 | #include <sys/malloc.h> | |
39 | #include <vfs/vfs_support.h> | |
40 | ||
41 | #include <libkern/OSAtomic.h> | |
42 | ||
43 | #if CONFIG_MACF | |
44 | #include <security/mac_framework.h> | |
45 | #endif | |
46 | ||
47 | #include "routefs.h" | |
48 | ||
49 | static int routefs_init(__unused struct vfsconf *vfsp); | |
50 | static int routefs_mount(struct mount *mp, __unused vnode_t devvp, __unused user_addr_t data, vfs_context_t ctx); | |
51 | static int routefs_start(__unused struct mount *mp, __unused int flags, __unused vfs_context_t ctx); | |
52 | static int routefs_unmount( struct mount *mp, int mntflags, __unused vfs_context_t ctx); | |
53 | static int routefs_root(struct mount *mp, struct vnode **vpp, __unused vfs_context_t ctx); | |
54 | static int routefs_statfs( struct mount *mp, struct vfsstatfs *sbp, __unused vfs_context_t ctx); | |
55 | static int routefs_vfs_getattr(__unused mount_t mp, struct vfs_attr *fsap, __unused vfs_context_t ctx); | |
56 | static int routefs_sync(__unused struct mount *mp, __unused int waitfor, __unused vfs_context_t ctx); | |
57 | static int routefs_vget(__unused struct mount *mp, __unused ino64_t ino, __unused struct vnode **vpp, __unused vfs_context_t ctx); | |
0a7de745 A |
58 | static int routefs_fhtovp(__unused struct mount *mp, __unused int fhlen, __unused unsigned char *fhp, __unused struct vnode **vpp, __unused vfs_context_t ctx); |
59 | static int routefs_vptofh(__unused struct vnode *vp, __unused int *fhlenp, __unused unsigned char *fhp, __unused vfs_context_t ctx); | |
490019cf | 60 | static int routefs_sysctl(__unused int *name, __unused u_int namelen, __unused user_addr_t oldp, |
0a7de745 A |
61 | __unused size_t *oldlenp, __unused user_addr_t newp, |
62 | __unused size_t newlen, __unused vfs_context_t ctx); | |
490019cf A |
63 | static int routefserr_lookup(__unused struct vnop_lookup_args * args); |
64 | ||
65 | static int routefserr_setlabel(__unused struct vnop_setlabel_args * args); | |
66 | ||
67 | ||
68 | lck_grp_t * routefs_lck_grp; | |
69 | lck_grp_attr_t * routefs_lck_grp_attr; | |
70 | lck_attr_t * routefs_lck_attr; | |
71 | lck_mtx_t routefs_mutex; | |
72 | ||
73 | #define ROUTEFS_LOCK() lck_mtx_lock(&routefs_mutex) | |
74 | #define ROUTEFS_UNLOCK() lck_mtx_unlock(&routefs_mutex) | |
75 | static int _lock_inited = 0; | |
76 | static boolean_t _fs_alreadyMounted = FALSE; /* atleast a mount of this filesystem is present */ | |
77 | ||
78 | static int | |
79 | routefs_init(__unused struct vfsconf *vfsp) | |
80 | { | |
0a7de745 A |
81 | routefs_lck_grp_attr = lck_grp_attr_alloc_init(); |
82 | routefs_lck_grp = lck_grp_alloc_init("routefs_lock", routefs_lck_grp_attr); | |
83 | routefs_lck_attr = lck_attr_alloc_init(); | |
84 | lck_mtx_init(&routefs_mutex, routefs_lck_grp, routefs_lck_attr); | |
85 | _lock_inited = 1; | |
86 | ||
87 | return 0; | |
490019cf A |
88 | } |
89 | ||
90 | static int | |
0a7de745 | 91 | routefs_mount(struct mount *mp, __unused vnode_t devvp, user_addr_t data, vfs_context_t ctx) |
490019cf | 92 | { |
0a7de745 A |
93 | struct routefs_mount *routefs_mp_p = NULL; /* routefs specific mount info */ |
94 | int error = EINVAL; | |
95 | struct routefs_args * rargs = (struct routefs_args *)data; | |
96 | ||
490019cf A |
97 | /*- |
98 | * If they just want to update, we don't need to do anything. | |
99 | */ | |
0a7de745 | 100 | if (mp->mnt_flag & MNT_UPDATE) { |
490019cf A |
101 | return 0; |
102 | } | |
103 | ||
0a7de745 A |
104 | |
105 | /* check for root mount only */ | |
106 | if ((error = proc_suser(current_proc())) != 0) { | |
107 | goto out; | |
108 | } | |
109 | ||
110 | if (vfs_iskernelmount(mp) == FALSE) { | |
111 | error = EPERM; | |
112 | goto out; | |
113 | } | |
114 | ||
115 | if (_fs_alreadyMounted == TRUE) { | |
116 | /* if a filesystem is mounted, it needs to be unmounted prior to mount again */ | |
117 | error = EPERM; | |
118 | goto out; | |
119 | } | |
120 | ||
490019cf A |
121 | /* Advisory locking should be handled at the VFS layer */ |
122 | vfs_setlocklocal(mp); | |
123 | ||
124 | /*- | |
125 | * Well, it's not an update, it's a real mount request. | |
126 | * Time to get dirty. | |
127 | * HERE we should check to see if we are already mounted here. | |
128 | */ | |
129 | ||
130 | MALLOC(routefs_mp_p, struct routefs_mount *, sizeof(struct routefs_mount), | |
0a7de745 A |
131 | M_TEMP, M_WAITOK); |
132 | if (routefs_mp_p == NULL) { | |
133 | return ENOMEM; | |
134 | } | |
490019cf | 135 | bzero(routefs_mp_p, sizeof(*routefs_mp_p)); |
0a7de745 | 136 | |
490019cf A |
137 | routefs_mp_p->route_mount = mp; |
138 | ||
0a7de745 A |
139 | if (rargs->route_rvp == NULLVP) { |
140 | error = EACCES; | |
141 | goto out; | |
142 | } | |
143 | ||
144 | strlcpy(routefs_mp_p->route_path, rargs->route_path, MAXPATHLEN); | |
145 | routefs_mp_p->route_rvp = rargs->route_rvp; | |
146 | routefs_mp_p->route_vpvid = vnode_vid(rargs->route_rvp); | |
147 | ||
148 | if (vnode_ref(routefs_mp_p->route_rvp) != 0) { | |
149 | error = EACCES; | |
150 | goto out; | |
151 | } | |
152 | ||
153 | /* | |
490019cf A |
154 | * Fill out some fields |
155 | */ | |
156 | __IGNORE_WCASTALIGN(mp->mnt_data = (qaddr_t)routefs_mp_p); | |
ea3f0419 | 157 | mp->mnt_vfsstat.f_fsid.val[0] = (int32_t)VM_KERNEL_ADDRHASH(routefs_mp_p); |
490019cf A |
158 | mp->mnt_vfsstat.f_fsid.val[1] = vfs_typenum(mp); |
159 | mp->mnt_flag |= MNT_LOCAL; | |
160 | ||
161 | /*- | |
162 | * Copy in the name of the directory the filesystem | |
163 | * is to be mounted on. | |
164 | * And we clear the remainder of the character strings | |
165 | * to be tidy. | |
166 | */ | |
0a7de745 | 167 | |
490019cf | 168 | bzero(mp->mnt_vfsstat.f_mntfromname, MAXPATHLEN); |
0a7de745 | 169 | bcopy("routefs", mp->mnt_vfsstat.f_mntfromname, 5); |
490019cf | 170 | (void)routefs_statfs(mp, &mp->mnt_vfsstat, ctx); |
0a7de745 | 171 | _fs_alreadyMounted = TRUE; /* yep, fs is in play now */ |
490019cf A |
172 | error = 0; |
173 | out: | |
0a7de745 A |
174 | if (error != 0) { |
175 | if (routefs_mp_p != NULL) { | |
176 | FREE(routefs_mp_p, M_TEMP); | |
177 | } | |
178 | } | |
490019cf A |
179 | return error; |
180 | } | |
181 | ||
182 | ||
183 | static int | |
184 | routefs_start(__unused struct mount *mp, __unused int flags, __unused vfs_context_t ctx) | |
185 | { | |
186 | return 0; | |
187 | } | |
188 | ||
189 | /*- | |
190 | * Unmount the filesystem described by mp. | |
191 | */ | |
192 | static int | |
193 | routefs_unmount( struct mount *mp, int mntflags, __unused vfs_context_t ctx) | |
194 | { | |
195 | struct routefs_mount *routefs_mp_p = (struct routefs_mount *)mp->mnt_data; | |
196 | int flags = 0; | |
197 | int force = 0; | |
198 | int error; | |
0a7de745 A |
199 | |
200 | /* check for root unmount only */ | |
201 | if ((error = proc_suser(current_proc())) != 0) { | |
202 | return error; | |
203 | } | |
490019cf A |
204 | |
205 | if (mntflags & MNT_FORCE) { | |
206 | flags |= FORCECLOSE; | |
207 | force = 1; | |
208 | } | |
0a7de745 A |
209 | /* giveup the ioref of vnode, no longer need it */ |
210 | if (routefs_mp_p->route_rvp != NULLVP) { | |
211 | if (vnode_getwithref(routefs_mp_p->route_rvp) == 0) { | |
212 | vnode_rele(routefs_mp_p->route_rvp); | |
213 | vnode_put(routefs_mp_p->route_rvp); | |
214 | routefs_mp_p->route_rvp = NULLVP; | |
215 | } | |
216 | } | |
217 | /* no vnodes, ignore any errors */ | |
218 | (void)vflush(mp, NULLVP, flags); | |
219 | FREE(routefs_mp_p, M_TEMP); | |
490019cf A |
220 | mp->mnt_data = (qaddr_t)0; |
221 | mp->mnt_flag &= ~MNT_LOCAL; | |
0a7de745 | 222 | _fs_alreadyMounted = FALSE; /* unmounted the fs, only one allowed at a time */ |
490019cf A |
223 | return 0; |
224 | } | |
225 | ||
226 | /* return the address of the root vnode in *vpp */ | |
227 | static int | |
228 | routefs_root(struct mount *mp, struct vnode **vpp, __unused vfs_context_t ctx) | |
229 | { | |
230 | struct routefs_mount *routefs_mp_p = (struct routefs_mount *)(mp->mnt_data); | |
0a7de745 A |
231 | int error = 0; |
232 | ||
233 | /* check for nullvp incase its being rolled */ | |
234 | if (routefs_mp_p->route_rvp == NULLVP) { | |
235 | ROUTEFS_LOCK(); | |
236 | if (routefs_mp_p->route_rvp == NULLVP) { | |
237 | ROUTEFS_UNLOCK(); | |
238 | error = EACCES; | |
239 | goto out; | |
240 | } | |
241 | ROUTEFS_UNLOCK(); | |
242 | } | |
243 | if (vnode_getwithvid(routefs_mp_p->route_rvp, routefs_mp_p->route_vpvid) != 0) { | |
244 | /* only one in the path., since no vnodes with this, you can hold across this call */ | |
245 | ROUTEFS_LOCK(); | |
246 | if (vnode_getwithref(routefs_mp_p->route_rvp) == 0) { | |
247 | vnode_rele(routefs_mp_p->route_rvp); | |
248 | vnode_put(routefs_mp_p->route_rvp); | |
249 | routefs_mp_p->route_rvp = NULLVP; | |
250 | routefs_mp_p->route_vpvid = -1; | |
251 | error = vnode_lookup(routefs_mp_p->route_path, FREAD | O_DIRECTORY, &routefs_mp_p->route_rvp, ctx); | |
252 | if (error == 0) { | |
253 | routefs_mp_p->route_vpvid = vnode_vid(routefs_mp_p->route_rvp); | |
254 | } | |
255 | } else { | |
256 | error = EACCES; | |
257 | } | |
258 | ROUTEFS_UNLOCK(); | |
259 | ||
260 | if (error != 0) { | |
261 | goto out; | |
262 | } | |
263 | } | |
264 | *vpp = routefs_mp_p->route_rvp; | |
490019cf A |
265 | out: |
266 | return error; | |
267 | } | |
268 | ||
269 | static int | |
270 | routefs_statfs( struct mount *mp, struct vfsstatfs *sbp, __unused vfs_context_t ctx) | |
271 | { | |
272 | struct routefs_mount *routefs_mp_p = (struct routefs_mount *)mp->mnt_data; | |
273 | ||
274 | /*- | |
275 | * Fill in the stat block. | |
276 | */ | |
277 | //sbp->f_type = mp->mnt_vfsstat.f_type; | |
0a7de745 | 278 | sbp->f_flags = 0; /* XXX */ |
490019cf A |
279 | sbp->f_bsize = 512; |
280 | sbp->f_iosize = 512; | |
0a7de745 | 281 | sbp->f_blocks = (sizeof(struct routefs_mount) + sbp->f_bsize) / sbp->f_bsize; |
490019cf A |
282 | sbp->f_bfree = 0; |
283 | sbp->f_bavail = 0; | |
284 | sbp->f_files = 0; | |
285 | sbp->f_ffree = 0; | |
ea3f0419 | 286 | sbp->f_fsid.val[0] = (int32_t)VM_KERNEL_ADDRHASH(routefs_mp_p); |
490019cf A |
287 | sbp->f_fsid.val[1] = vfs_typenum(mp); |
288 | ||
289 | return 0; | |
290 | } | |
291 | ||
292 | static int | |
293 | routefs_vfs_getattr(__unused mount_t mp, struct vfs_attr *fsap, __unused vfs_context_t ctx) | |
294 | { | |
295 | VFSATTR_RETURN(fsap, f_objcount, 1); | |
296 | VFSATTR_RETURN(fsap, f_maxobjcount, 1); | |
297 | VFSATTR_RETURN(fsap, f_bsize, 512); | |
298 | VFSATTR_RETURN(fsap, f_iosize, 512); | |
299 | if (VFSATTR_IS_ACTIVE(fsap, f_blocks) || VFSATTR_IS_ACTIVE(fsap, f_bused)) { | |
0a7de745 | 300 | fsap->f_blocks = (sizeof(struct routefs_mount) + fsap->f_bsize) / fsap->f_bsize; |
490019cf A |
301 | fsap->f_bused = fsap->f_blocks; |
302 | VFSATTR_SET_SUPPORTED(fsap, f_blocks); | |
303 | VFSATTR_SET_SUPPORTED(fsap, f_bused); | |
304 | } | |
305 | VFSATTR_RETURN(fsap, f_bfree, 0); | |
306 | VFSATTR_RETURN(fsap, f_bavail, 0); | |
307 | VFSATTR_RETURN(fsap, f_files, 0); | |
308 | VFSATTR_RETURN(fsap, f_ffree, 0); | |
309 | VFSATTR_RETURN(fsap, f_fssubtype, 0); | |
0a7de745 | 310 | |
490019cf A |
311 | if (VFSATTR_IS_ACTIVE(fsap, f_capabilities)) { |
312 | fsap->f_capabilities.capabilities[VOL_CAPABILITIES_FORMAT] = | |
0a7de745 A |
313 | VOL_CAP_FMT_SYMBOLICLINKS | |
314 | VOL_CAP_FMT_HARDLINKS | | |
315 | VOL_CAP_FMT_NO_ROOT_TIMES | | |
316 | VOL_CAP_FMT_CASE_SENSITIVE | | |
317 | VOL_CAP_FMT_CASE_PRESERVING | | |
318 | VOL_CAP_FMT_FAST_STATFS | | |
319 | VOL_CAP_FMT_2TB_FILESIZE | | |
320 | VOL_CAP_FMT_HIDDEN_FILES; | |
490019cf | 321 | fsap->f_capabilities.capabilities[VOL_CAPABILITIES_INTERFACES] = |
0a7de745 | 322 | VOL_CAP_INT_ATTRLIST; |
490019cf A |
323 | fsap->f_capabilities.capabilities[VOL_CAPABILITIES_RESERVED1] = 0; |
324 | fsap->f_capabilities.capabilities[VOL_CAPABILITIES_RESERVED2] = 0; | |
0a7de745 | 325 | |
490019cf | 326 | fsap->f_capabilities.valid[VOL_CAPABILITIES_FORMAT] = |
0a7de745 A |
327 | VOL_CAP_FMT_PERSISTENTOBJECTIDS | |
328 | VOL_CAP_FMT_SYMBOLICLINKS | | |
329 | VOL_CAP_FMT_HARDLINKS | | |
330 | VOL_CAP_FMT_JOURNAL | | |
331 | VOL_CAP_FMT_JOURNAL_ACTIVE | | |
332 | VOL_CAP_FMT_NO_ROOT_TIMES | | |
333 | VOL_CAP_FMT_SPARSE_FILES | | |
334 | VOL_CAP_FMT_ZERO_RUNS | | |
335 | VOL_CAP_FMT_CASE_SENSITIVE | | |
336 | VOL_CAP_FMT_CASE_PRESERVING | | |
337 | VOL_CAP_FMT_FAST_STATFS | | |
338 | VOL_CAP_FMT_2TB_FILESIZE | | |
339 | VOL_CAP_FMT_OPENDENYMODES | | |
340 | VOL_CAP_FMT_HIDDEN_FILES | | |
341 | VOL_CAP_FMT_PATH_FROM_ID | | |
342 | VOL_CAP_FMT_NO_VOLUME_SIZES; | |
490019cf | 343 | fsap->f_capabilities.valid[VOL_CAPABILITIES_INTERFACES] = |
0a7de745 A |
344 | VOL_CAP_INT_SEARCHFS | |
345 | VOL_CAP_INT_ATTRLIST | | |
346 | VOL_CAP_INT_NFSEXPORT | | |
347 | VOL_CAP_INT_READDIRATTR | | |
348 | VOL_CAP_INT_EXCHANGEDATA | | |
349 | VOL_CAP_INT_COPYFILE | | |
350 | VOL_CAP_INT_ALLOCATE | | |
351 | VOL_CAP_INT_VOL_RENAME | | |
352 | VOL_CAP_INT_ADVLOCK | | |
353 | VOL_CAP_INT_FLOCK | | |
354 | VOL_CAP_INT_EXTENDED_SECURITY | | |
355 | VOL_CAP_INT_USERACCESS | | |
356 | VOL_CAP_INT_MANLOCK | | |
357 | VOL_CAP_INT_EXTENDED_ATTR | | |
358 | VOL_CAP_INT_NAMEDSTREAMS; | |
490019cf A |
359 | fsap->f_capabilities.valid[VOL_CAPABILITIES_RESERVED1] = 0; |
360 | fsap->f_capabilities.valid[VOL_CAPABILITIES_RESERVED2] = 0; | |
0a7de745 | 361 | |
490019cf A |
362 | VFSATTR_SET_SUPPORTED(fsap, f_capabilities); |
363 | } | |
0a7de745 | 364 | |
490019cf A |
365 | if (VFSATTR_IS_ACTIVE(fsap, f_attributes)) { |
366 | fsap->f_attributes.validattr.commonattr = | |
0a7de745 A |
367 | ATTR_CMN_NAME | ATTR_CMN_DEVID | ATTR_CMN_FSID | |
368 | ATTR_CMN_OBJTYPE | ATTR_CMN_OBJTAG | ATTR_CMN_OBJID | | |
369 | ATTR_CMN_PAROBJID | | |
370 | ATTR_CMN_MODTIME | ATTR_CMN_CHGTIME | ATTR_CMN_ACCTIME | | |
371 | ATTR_CMN_OWNERID | ATTR_CMN_GRPID | ATTR_CMN_ACCESSMASK | | |
372 | ATTR_CMN_FLAGS | ATTR_CMN_USERACCESS | ATTR_CMN_FILEID; | |
490019cf | 373 | fsap->f_attributes.validattr.volattr = |
0a7de745 A |
374 | ATTR_VOL_FSTYPE | ATTR_VOL_SIZE | ATTR_VOL_SPACEFREE | |
375 | ATTR_VOL_SPACEAVAIL | ATTR_VOL_MINALLOCATION | | |
376 | ATTR_VOL_OBJCOUNT | ATTR_VOL_MAXOBJCOUNT | | |
377 | ATTR_VOL_MOUNTPOINT | ATTR_VOL_MOUNTFLAGS | | |
378 | ATTR_VOL_MOUNTEDDEVICE | ATTR_VOL_CAPABILITIES | | |
379 | ATTR_VOL_ATTRIBUTES; | |
490019cf | 380 | fsap->f_attributes.validattr.dirattr = |
0a7de745 | 381 | ATTR_DIR_LINKCOUNT | ATTR_DIR_MOUNTSTATUS; |
490019cf | 382 | fsap->f_attributes.validattr.fileattr = |
0a7de745 A |
383 | ATTR_FILE_LINKCOUNT | ATTR_FILE_TOTALSIZE | |
384 | ATTR_FILE_IOBLOCKSIZE | ATTR_FILE_DEVTYPE | | |
385 | ATTR_FILE_DATALENGTH; | |
490019cf | 386 | fsap->f_attributes.validattr.forkattr = 0; |
0a7de745 | 387 | |
490019cf | 388 | fsap->f_attributes.nativeattr.commonattr = |
0a7de745 A |
389 | ATTR_CMN_NAME | ATTR_CMN_DEVID | ATTR_CMN_FSID | |
390 | ATTR_CMN_OBJTYPE | ATTR_CMN_OBJTAG | ATTR_CMN_OBJID | | |
391 | ATTR_CMN_PAROBJID | | |
392 | ATTR_CMN_MODTIME | ATTR_CMN_CHGTIME | ATTR_CMN_ACCTIME | | |
393 | ATTR_CMN_OWNERID | ATTR_CMN_GRPID | ATTR_CMN_ACCESSMASK | | |
394 | ATTR_CMN_FLAGS | ATTR_CMN_USERACCESS | ATTR_CMN_FILEID; | |
490019cf | 395 | fsap->f_attributes.nativeattr.volattr = |
0a7de745 A |
396 | ATTR_VOL_FSTYPE | ATTR_VOL_SIZE | ATTR_VOL_SPACEFREE | |
397 | ATTR_VOL_SPACEAVAIL | ATTR_VOL_MINALLOCATION | | |
398 | ATTR_VOL_OBJCOUNT | ATTR_VOL_MAXOBJCOUNT | | |
399 | ATTR_VOL_MOUNTPOINT | ATTR_VOL_MOUNTFLAGS | | |
400 | ATTR_VOL_MOUNTEDDEVICE | ATTR_VOL_CAPABILITIES | | |
401 | ATTR_VOL_ATTRIBUTES; | |
490019cf | 402 | fsap->f_attributes.nativeattr.dirattr = |
0a7de745 | 403 | ATTR_DIR_MOUNTSTATUS; |
490019cf | 404 | fsap->f_attributes.nativeattr.fileattr = |
0a7de745 A |
405 | ATTR_FILE_LINKCOUNT | ATTR_FILE_TOTALSIZE | |
406 | ATTR_FILE_IOBLOCKSIZE | ATTR_FILE_DEVTYPE | | |
407 | ATTR_FILE_DATALENGTH; | |
490019cf A |
408 | fsap->f_attributes.nativeattr.forkattr = 0; |
409 | ||
410 | VFSATTR_SET_SUPPORTED(fsap, f_attributes); | |
411 | } | |
0a7de745 | 412 | |
490019cf A |
413 | return 0; |
414 | } | |
415 | ||
416 | static int | |
417 | routefs_sync(__unused struct mount *mp, __unused int waitfor, __unused vfs_context_t ctx) | |
418 | { | |
0a7de745 | 419 | return 0; |
490019cf A |
420 | } |
421 | ||
422 | ||
423 | static int | |
424 | routefs_vget(__unused struct mount *mp, __unused ino64_t ino, __unused struct vnode **vpp, __unused vfs_context_t ctx) | |
425 | { | |
426 | return ENOTSUP; | |
427 | } | |
428 | ||
429 | static int | |
0a7de745 | 430 | routefs_fhtovp(__unused struct mount *mp, __unused int fhlen, __unused unsigned char *fhp, __unused struct vnode **vpp, __unused vfs_context_t ctx) |
490019cf | 431 | { |
0a7de745 | 432 | return EINVAL; |
490019cf A |
433 | } |
434 | ||
435 | ||
436 | static int | |
0a7de745 | 437 | routefs_vptofh(__unused struct vnode *vp, __unused int *fhlenp, __unused unsigned char *fhp, __unused vfs_context_t ctx) |
490019cf | 438 | { |
0a7de745 | 439 | return EINVAL; |
490019cf A |
440 | } |
441 | ||
442 | static int | |
443 | routefs_sysctl(__unused int *name, __unused u_int namelen, __unused user_addr_t oldp, | |
0a7de745 A |
444 | __unused size_t *oldlenp, __unused user_addr_t newp, |
445 | __unused size_t newlen, __unused vfs_context_t ctx) | |
490019cf | 446 | { |
0a7de745 | 447 | return ENOTSUP; |
490019cf A |
448 | } |
449 | ||
450 | #include <sys/namei.h> | |
451 | #define MOBILE_DIR_PATH "/private/var/mobile" | |
452 | /* | |
453 | * Function: routefs_kernel_mount | |
454 | * Purpose: | |
455 | * Mount routefs at the given mount point from within the kernel. | |
456 | */ | |
457 | int | |
458 | routefs_kernel_mount(char * routepath) | |
459 | { | |
0a7de745 | 460 | int error = EINVAL; |
490019cf A |
461 | vfs_context_t ctx = vfs_context_kernel(); |
462 | char fsname[] = "routefs"; | |
0a7de745 A |
463 | struct routefs_args args; |
464 | char mounthere[] = MOBILE_DIR_PATH; /* !const because of internal casting */ | |
465 | ||
466 | bzero(&args, sizeof(struct routefs_args)); | |
467 | strlcpy(args.route_path, routepath, MAXPATHLEN); | |
468 | error = vnode_lookup(args.route_path, FREAD | O_DIRECTORY, &args.route_rvp, ctx); | |
469 | if (error) { | |
470 | goto out; | |
490019cf A |
471 | } |
472 | ||
0a7de745 A |
473 | if (!vnode_isdir(args.route_rvp)) { |
474 | error = EACCES; | |
475 | goto out; | |
476 | } | |
490019cf | 477 | |
0a7de745 | 478 | error = kernel_mount(fsname, NULLVP, NULLVP, mounthere, &args, 0, MNT_DONTBROWSE, KERNEL_MOUNT_NOAUTH, ctx); |
490019cf A |
479 | if (error) { |
480 | goto out; | |
481 | } | |
482 | ||
483 | out: | |
0a7de745 A |
484 | if (args.route_rvp != NULLVP) { |
485 | (void) vnode_put(args.route_rvp); | |
486 | } | |
487 | return error; | |
490019cf A |
488 | } |
489 | ||
cb323159 | 490 | const struct vfsops routefs_vfsops = { |
490019cf A |
491 | .vfs_mount = routefs_mount, |
492 | .vfs_start = routefs_start, | |
493 | .vfs_unmount = routefs_unmount, | |
494 | .vfs_root = routefs_root, | |
495 | .vfs_getattr = routefs_vfs_getattr, | |
496 | .vfs_sync = routefs_sync, | |
497 | .vfs_vget = routefs_vget, | |
498 | .vfs_fhtovp = routefs_fhtovp, | |
499 | .vfs_vptofh = routefs_vptofh, | |
500 | .vfs_init = routefs_init, | |
501 | .vfs_sysctl = routefs_sysctl, | |
502 | // There are other VFS ops that we do not support | |
503 | }; | |
504 | ||
0a7de745 A |
505 | static int |
506 | routefserr_lookup(__unused struct vnop_lookup_args * args) | |
490019cf | 507 | { |
0a7de745 | 508 | return ENOTSUP; |
490019cf A |
509 | } |
510 | ||
0a7de745 A |
511 | static int |
512 | routefserr_setlabel(__unused struct vnop_setlabel_args * args) | |
490019cf | 513 | { |
0a7de745 | 514 | return ENOTSUP; |
490019cf A |
515 | } |
516 | ||
517 | #define VOPFUNC int (*)(void *) | |
518 | ||
519 | /* The following ops are used by directories and symlinks */ | |
0a7de745 | 520 | int(**routefs_vnodeop_p)(void *); |
cb323159 A |
521 | static const struct vnodeopv_entry_desc routefs_vnodeop_entries[] = { |
522 | { .opve_op = &vnop_default_desc, .opve_impl = (VOPFUNC)vn_default_error }, | |
523 | { .opve_op = &vnop_lookup_desc, .opve_impl = (VOPFUNC)routefserr_lookup }, /* lookup */ | |
524 | { .opve_op = &vnop_create_desc, .opve_impl = (VOPFUNC)err_create }, /* create */ | |
525 | { .opve_op = &vnop_whiteout_desc, .opve_impl = (VOPFUNC)err_whiteout }, /* whiteout */ | |
526 | { .opve_op = &vnop_mknod_desc, .opve_impl = (VOPFUNC)err_mknod }, /* mknod */ | |
527 | { .opve_op = &vnop_open_desc, .opve_impl = (VOPFUNC)err_open }, /* open */ | |
528 | { .opve_op = &vnop_close_desc, .opve_impl = (VOPFUNC)err_close }, /* close */ | |
529 | { .opve_op = &vnop_getattr_desc, .opve_impl = (VOPFUNC)err_getattr }, /* getattr */ | |
530 | { .opve_op = &vnop_setattr_desc, .opve_impl = (VOPFUNC)err_setattr }, /* setattr */ | |
531 | { .opve_op = &vnop_read_desc, .opve_impl = (VOPFUNC)err_read }, /* read */ | |
532 | { .opve_op = &vnop_write_desc, .opve_impl = (VOPFUNC)err_write }, /* write */ | |
533 | { .opve_op = &vnop_ioctl_desc, .opve_impl = (VOPFUNC)err_ioctl }, /* ioctl */ | |
534 | { .opve_op = &vnop_select_desc, .opve_impl = (VOPFUNC)err_select }, /* select */ | |
535 | { .opve_op = &vnop_revoke_desc, .opve_impl = (VOPFUNC)err_revoke }, /* revoke */ | |
536 | { .opve_op = &vnop_mmap_desc, .opve_impl = (VOPFUNC)err_mmap }, /* mmap */ | |
537 | { .opve_op = &vnop_fsync_desc, .opve_impl = (VOPFUNC)nop_fsync }, /* fsync */ | |
538 | { .opve_op = &vnop_remove_desc, .opve_impl = (VOPFUNC)err_remove }, /* remove */ | |
539 | { .opve_op = &vnop_link_desc, .opve_impl = (VOPFUNC)err_link }, /* link */ | |
540 | { .opve_op = &vnop_rename_desc, .opve_impl = (VOPFUNC)err_rename }, /* rename */ | |
541 | { .opve_op = &vnop_mkdir_desc, .opve_impl = (VOPFUNC)err_mkdir }, /* mkdir */ | |
542 | { .opve_op = &vnop_rmdir_desc, .opve_impl = (VOPFUNC)err_rmdir }, /* rmdir */ | |
543 | { .opve_op = &vnop_symlink_desc, .opve_impl = (VOPFUNC)err_symlink }, /* symlink */ | |
544 | { .opve_op = &vnop_readdir_desc, .opve_impl = (VOPFUNC)err_readdir }, /* readdir */ | |
545 | { .opve_op = &vnop_readlink_desc, .opve_impl = (VOPFUNC)err_readlink }, /* readlink */ | |
546 | { .opve_op = &vnop_inactive_desc, .opve_impl = (VOPFUNC)err_inactive }, /* inactive */ | |
547 | { .opve_op = &vnop_reclaim_desc, .opve_impl = (VOPFUNC)err_reclaim }, /* reclaim */ | |
548 | { .opve_op = &vnop_strategy_desc, .opve_impl = (VOPFUNC)err_strategy }, /* strategy */ | |
549 | { .opve_op = &vnop_pathconf_desc, .opve_impl = (VOPFUNC)err_pathconf }, /* pathconf */ | |
550 | { .opve_op = &vnop_advlock_desc, .opve_impl = (VOPFUNC)err_advlock }, /* advlock */ | |
551 | { .opve_op = &vnop_bwrite_desc, .opve_impl = (VOPFUNC)err_bwrite }, | |
552 | { .opve_op = &vnop_pagein_desc, .opve_impl = (VOPFUNC)err_pagein }, /* Pagein */ | |
553 | { .opve_op = &vnop_pageout_desc, .opve_impl = (VOPFUNC)err_pageout }, /* Pageout */ | |
554 | { .opve_op = &vnop_copyfile_desc, .opve_impl = (VOPFUNC)err_copyfile }, /* Copyfile */ | |
555 | { .opve_op = &vnop_blktooff_desc, .opve_impl = (VOPFUNC)err_blktooff }, /* blktooff */ | |
556 | { .opve_op = &vnop_offtoblk_desc, .opve_impl = (VOPFUNC)err_offtoblk }, /* offtoblk */ | |
557 | { .opve_op = &vnop_blockmap_desc, .opve_impl = (VOPFUNC)err_blockmap }, /* blockmap */ | |
490019cf | 558 | #if CONFIG_MACF |
cb323159 | 559 | { .opve_op = &vnop_setlabel_desc, .opve_impl = (VOPFUNC)routefserr_setlabel }, /* setlabel */ |
490019cf | 560 | #endif |
cb323159 | 561 | { .opve_op = (struct vnodeop_desc*)NULL, .opve_impl = (int (*)(void *))NULL } |
490019cf | 562 | }; |
cb323159 A |
563 | |
564 | const struct vnodeopv_desc routefs_vnodeop_opv_desc = | |
565 | { .opv_desc_vector_p = &routefs_vnodeop_p, .opv_desc_ops = routefs_vnodeop_entries }; |