Mercurial > illumos > illumos-gate
annotate usr/src/uts/common/fs/hsfs/hsfs_vfsops.c @ 1488:196daa2cf3db
PSARC/2006/034 fsstat
PSARC/2006/116 fsstat update
6335370 RFE: Need generic file system observability (e.g., fsstat)
author | rsb |
---|---|
date | Sat, 25 Feb 2006 01:33:06 -0800 |
parents | 1aef26bcfa0e |
children | 8188e64c9073 |
rev | line source |
---|---|
0 | 1 /* |
2 * CDDL HEADER START | |
3 * | |
4 * The contents of this file are subject to the terms of the | |
1025
1aef26bcfa0e
6300064 hsfs_spec.h has developed a southern drawl.
frankho
parents:
494
diff
changeset
|
5 * Common Development and Distribution License (the "License"). |
1aef26bcfa0e
6300064 hsfs_spec.h has developed a southern drawl.
frankho
parents:
494
diff
changeset
|
6 * You may not use this file except in compliance with the License. |
0 | 7 * |
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
9 * or http://www.opensolaris.org/os/licensing. | |
10 * See the License for the specific language governing permissions | |
11 * and limitations under the License. | |
12 * | |
13 * When distributing Covered Code, include this CDDL HEADER in each | |
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 * If applicable, add the following below this CDDL HEADER, with the | |
16 * fields enclosed by brackets "[]" replaced with your own identifying | |
17 * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 * | |
19 * CDDL HEADER END | |
20 */ | |
21 /* | |
1488 | 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. |
0 | 23 * Use is subject to license terms. |
24 */ | |
25 | |
26 #pragma ident "%Z%%M% %I% %E% SMI" | |
27 | |
28 /* | |
29 * VFS operations for High Sierra filesystem | |
30 */ | |
31 | |
32 #include <sys/types.h> | |
33 #include <sys/isa_defs.h> | |
34 #include <sys/t_lock.h> | |
35 #include <sys/param.h> | |
36 #include <sys/systm.h> | |
37 #include <sys/sysmacros.h> | |
38 #include <sys/kmem.h> | |
39 #include <sys/signal.h> | |
40 #include <sys/user.h> | |
41 #include <sys/proc.h> | |
42 #include <sys/disp.h> | |
43 #include <sys/buf.h> | |
44 #include <sys/pathname.h> | |
45 #include <sys/vfs.h> | |
46 #include <sys/vnode.h> | |
47 #include <sys/file.h> | |
48 #include <sys/uio.h> | |
49 #include <sys/conf.h> | |
50 #include <sys/policy.h> | |
51 | |
52 #include <vm/page.h> | |
53 | |
54 #include <sys/fs/snode.h> | |
55 #include <sys/fs/hsfs_spec.h> | |
56 #include <sys/fs/hsfs_isospec.h> | |
57 #include <sys/fs/hsfs_node.h> | |
58 #include <sys/fs/hsfs_impl.h> | |
59 #include <sys/fs/hsfs_susp.h> | |
60 #include <sys/fs/hsfs_rrip.h> | |
61 | |
62 #include <sys/statvfs.h> | |
63 #include <sys/mount.h> | |
64 #include <sys/mntent.h> | |
65 #include <sys/swap.h> | |
66 #include <sys/errno.h> | |
67 #include <sys/debug.h> | |
68 #include "fs/fs_subr.h" | |
69 #include <sys/cmn_err.h> | |
70 #include <sys/bootconf.h> | |
71 | |
72 /* | |
73 * These are needed for the CDROMREADOFFSET Code | |
74 */ | |
75 #include <sys/cdio.h> | |
76 #include <sys/sunddi.h> | |
77 | |
78 #define HSFS_CLKSET | |
79 | |
80 #include <sys/modctl.h> | |
81 | |
82 /* | |
83 * Options for mount. | |
84 */ | |
85 #define HOPT_GLOBAL MNTOPT_GLOBAL | |
86 #define HOPT_NOGLOBAL MNTOPT_NOGLOBAL | |
87 #define HOPT_MAPLCASE "maplcase" | |
88 #define HOPT_NOMAPLCASE "nomaplcase" | |
89 #define HOPT_NOTRAILDOT "notraildot" | |
90 #define HOPT_TRAILDOT "traildot" | |
91 #define HOPT_NRR "nrr" | |
92 #define HOPT_RR "rr" | |
93 #define HOPT_RO MNTOPT_RO | |
94 | |
95 static char *global_cancel[] = { HOPT_NOGLOBAL, NULL }; | |
96 static char *noglobal_cancel[] = { HOPT_GLOBAL, NULL }; | |
97 static char *mapl_cancel[] = { HOPT_NOMAPLCASE, NULL }; | |
98 static char *nomapl_cancel[] = { HOPT_MAPLCASE, NULL }; | |
99 static char *ro_cancel[] = { MNTOPT_RW, NULL }; | |
100 static char *rr_cancel[] = { HOPT_NRR, NULL }; | |
101 static char *nrr_cancel[] = { HOPT_RR, NULL }; | |
102 static char *trail_cancel[] = { HOPT_NOTRAILDOT, NULL }; | |
103 static char *notrail_cancel[] = { HOPT_TRAILDOT, NULL }; | |
104 | |
105 static mntopt_t hsfs_options[] = { | |
106 { HOPT_GLOBAL, global_cancel, NULL, 0, NULL }, | |
107 { HOPT_NOGLOBAL, noglobal_cancel, NULL, MO_DEFAULT, NULL }, | |
108 { HOPT_MAPLCASE, mapl_cancel, NULL, MO_DEFAULT, NULL }, | |
109 { HOPT_NOMAPLCASE, nomapl_cancel, NULL, 0, NULL }, | |
110 { HOPT_RO, ro_cancel, NULL, MO_DEFAULT, NULL }, | |
111 { HOPT_RR, rr_cancel, NULL, MO_DEFAULT, NULL }, | |
112 { HOPT_NRR, nrr_cancel, NULL, 0, NULL }, | |
113 { HOPT_TRAILDOT, trail_cancel, NULL, MO_DEFAULT, NULL }, | |
114 { HOPT_NOTRAILDOT, notrail_cancel, NULL, 0, NULL }, | |
115 }; | |
116 | |
117 static mntopts_t hsfs_proto_opttbl = { | |
118 sizeof (hsfs_options) / sizeof (mntopt_t), | |
119 hsfs_options | |
120 }; | |
121 | |
122 static int hsfsinit(int, char *); | |
123 | |
124 static vfsdef_t vfw = { | |
125 VFSDEF_VERSION, | |
126 "hsfs", | |
127 hsfsinit, | |
1488 | 128 VSW_HASPROTO|VSW_STATS, /* We don't suppport remounting */ |
0 | 129 &hsfs_proto_opttbl |
130 }; | |
131 | |
132 static struct modlfs modlfs = { | |
133 &mod_fsops, "filesystem for HSFS", &vfw | |
134 }; | |
135 | |
136 static struct modlinkage modlinkage = { | |
137 MODREV_1, (void *)&modlfs, NULL | |
138 }; | |
139 | |
140 char _depends_on[] = "fs/specfs"; | |
141 | |
142 int | |
143 _init() | |
144 { | |
145 return (mod_install(&modlinkage)); | |
146 } | |
147 | |
148 int | |
149 _fini() | |
150 { | |
151 return (EBUSY); | |
152 } | |
153 | |
154 int | |
155 _info(struct modinfo *modinfop) | |
156 { | |
157 return (mod_info(&modlinkage, modinfop)); | |
158 } | |
159 | |
160 #define BDEVFLAG(dev) ((devopsp[getmajor(dev)])->devo_cb_ops->cb_flag) | |
161 | |
162 kmutex_t hs_mounttab_lock; | |
163 struct hsfs *hs_mounttab = NULL; | |
164 | |
165 /* default mode, uid, gid */ | |
166 mode_t hsfs_default_mode = 0555; | |
167 uid_t hsfs_default_uid = 0; | |
168 gid_t hsfs_default_gid = 3; | |
169 | |
170 static int hsfs_mount(struct vfs *vfsp, struct vnode *mvp, | |
171 struct mounta *uap, struct cred *cr); | |
172 static int hsfs_unmount(struct vfs *vfsp, int, struct cred *cr); | |
173 static int hsfs_root(struct vfs *vfsp, struct vnode **vpp); | |
174 static int hsfs_statvfs(struct vfs *vfsp, struct statvfs64 *sbp); | |
175 static int hsfs_vget(struct vfs *vfsp, struct vnode **vpp, struct fid *fidp); | |
176 static int hsfs_mountroot(struct vfs *, enum whymountroot); | |
177 | |
178 static int hs_mountfs(struct vfs *vfsp, dev_t dev, char *path, | |
179 mode_t mode, int flags, struct cred *cr, int isroot); | |
180 static int hs_findhsvol(struct hsfs *fsp, struct vnode *vp, | |
181 struct hs_volume *hvp); | |
182 static int hs_parsehsvol(struct hsfs *fsp, uchar_t *volp, | |
183 struct hs_volume *hvp); | |
184 static int hs_findisovol(struct hsfs *fsp, struct vnode *vp, | |
185 struct hs_volume *hvp); | |
186 static int hs_parseisovol(struct hsfs *fsp, uchar_t *volp, | |
187 struct hs_volume *hvp); | |
188 static void hs_copylabel(struct hs_volume *, unsigned char *); | |
189 static int hs_getmdev(struct vfs *, char *fspec, int flags, dev_t *pdev, | |
190 mode_t *mode, cred_t *cr); | |
191 static int hs_findvoldesc(dev_t rdev, int desc_sec); | |
192 | |
193 static int hsfsfstype; | |
194 | |
195 static int | |
196 hsfsinit(int fstype, char *name) | |
197 { | |
198 static const fs_operation_def_t hsfs_vfsops_template[] = { | |
199 VFSNAME_MOUNT, hsfs_mount, | |
200 VFSNAME_UNMOUNT, hsfs_unmount, | |
201 VFSNAME_ROOT, hsfs_root, | |
202 VFSNAME_STATVFS, hsfs_statvfs, | |
203 VFSNAME_VGET, hsfs_vget, | |
204 VFSNAME_MOUNTROOT, hsfs_mountroot, | |
205 NULL, NULL | |
206 }; | |
207 int error; | |
208 | |
209 error = vfs_setfsops(fstype, hsfs_vfsops_template, NULL); | |
210 if (error != 0) { | |
211 cmn_err(CE_WARN, "hsfsinit: bad vfs ops template"); | |
212 return (error); | |
213 } | |
214 | |
215 error = vn_make_ops(name, hsfs_vnodeops_template, &hsfs_vnodeops); | |
216 if (error != 0) { | |
217 (void) vfs_freevfsops_by_type(fstype); | |
218 cmn_err(CE_WARN, "hsfsinit: bad vnode ops template"); | |
219 return (error); | |
220 } | |
221 | |
222 hsfsfstype = fstype; | |
223 mutex_init(&hs_mounttab_lock, NULL, MUTEX_DEFAULT, NULL); | |
224 hs_init_hsnode_cache(); | |
225 return (0); | |
226 } | |
227 | |
228 /*ARGSUSED*/ | |
229 static int | |
230 hsfs_mount(struct vfs *vfsp, struct vnode *mvp, | |
231 struct mounta *uap, struct cred *cr) | |
232 { | |
233 int vnode_busy; | |
234 dev_t dev; | |
235 struct pathname dpn; | |
236 int error; | |
237 mode_t mode; | |
238 int flags; /* this will hold the mount specific data */ | |
239 | |
240 if ((error = secpolicy_fs_mount(cr, mvp, vfsp)) != 0) | |
241 return (error); | |
242 | |
243 if (mvp->v_type != VDIR) | |
244 return (ENOTDIR); | |
245 | |
246 /* mount option must be read only, else mount will be rejected */ | |
247 if (!(uap->flags & MS_RDONLY)) | |
248 return (EROFS); | |
249 | |
250 /* | |
251 * We already told the framework that we don't support remounting. | |
252 */ | |
253 ASSERT(!(uap->flags & MS_REMOUNT)); | |
254 | |
255 mutex_enter(&mvp->v_lock); | |
256 vnode_busy = (mvp->v_count != 1) || (mvp->v_flag & VROOT); | |
257 mutex_exit(&mvp->v_lock); | |
258 | |
259 if ((uap->flags & MS_OVERLAY) == 0 && vnode_busy) { | |
260 return (EBUSY); | |
261 } | |
262 | |
263 /* | |
264 * Check for the options that actually affect things | |
265 * at our level. | |
266 */ | |
267 flags = 0; | |
268 if (vfs_optionisset(vfsp, HOPT_NOMAPLCASE, NULL)) | |
269 flags |= HSFSMNT_NOMAPLCASE; | |
270 if (vfs_optionisset(vfsp, HOPT_NOTRAILDOT, NULL)) | |
271 flags |= HSFSMNT_NOTRAILDOT; | |
272 if (vfs_optionisset(vfsp, HOPT_NRR, NULL)) | |
273 flags |= HSFSMNT_NORRIP; | |
274 | |
275 error = pn_get(uap->dir, (uap->flags & MS_SYSSPACE) ? | |
276 UIO_SYSSPACE : UIO_USERSPACE, &dpn); | |
277 if (error) | |
278 return (error); | |
279 | |
280 if ((error = hs_getmdev(vfsp, uap->spec, uap->flags, &dev, | |
281 &mode, cr)) != 0) { | |
282 pn_free(&dpn); | |
283 return (error); | |
284 } | |
285 | |
286 /* | |
287 * If the device is a tape, return error | |
288 */ | |
289 if ((BDEVFLAG(dev) & D_TAPE) == D_TAPE) { | |
290 pn_free(&dpn); | |
291 return (ENOTBLK); | |
292 } | |
293 | |
294 /* | |
295 * Mount the filesystem. | |
296 */ | |
297 error = hs_mountfs(vfsp, dev, dpn.pn_path, mode, flags, cr, 0); | |
298 pn_free(&dpn); | |
299 return (error); | |
300 } | |
301 | |
302 /*ARGSUSED*/ | |
303 static int | |
304 hsfs_unmount( | |
305 struct vfs *vfsp, | |
306 int flag, | |
307 struct cred *cr) | |
308 { | |
309 struct hsfs **tspp; | |
310 struct hsfs *fsp; | |
311 | |
312 if (secpolicy_fs_unmount(cr, vfsp) != 0) | |
313 return (EPERM); | |
314 | |
315 /* | |
316 * forced unmount is not supported by this file system | |
317 * and thus, ENOTSUP is being returned. | |
318 */ | |
319 if (flag & MS_FORCE) | |
320 return (ENOTSUP); | |
321 | |
322 fsp = VFS_TO_HSFS(vfsp); | |
323 | |
324 if (fsp->hsfs_rootvp->v_count != 1) | |
325 return (EBUSY); | |
326 | |
327 /* destroy all old pages and hsnodes for this vfs */ | |
328 if (hs_synchash(vfsp)) | |
329 return (EBUSY); | |
330 | |
331 mutex_enter(&hs_mounttab_lock); | |
332 for (tspp = &hs_mounttab; *tspp != NULL; tspp = &(*tspp)->hsfs_next) { | |
333 if (*tspp == fsp) | |
334 break; | |
335 } | |
336 if (*tspp == NULL) { | |
337 mutex_exit(&hs_mounttab_lock); | |
338 panic("hsfs_unmount: vfs not mounted?"); | |
339 /*NOTREACHED*/ | |
340 } | |
341 | |
342 *tspp = fsp->hsfs_next; | |
343 | |
344 mutex_exit(&hs_mounttab_lock); | |
345 | |
346 (void) VOP_CLOSE(fsp->hsfs_devvp, FREAD, 1, (offset_t)0, cr); | |
347 VN_RELE(fsp->hsfs_devvp); | |
348 /* free path table space */ | |
349 if (fsp->hsfs_ptbl != NULL) | |
350 kmem_free(fsp->hsfs_ptbl, | |
351 (size_t)fsp->hsfs_vol.ptbl_len); | |
352 /* free path table index table */ | |
353 if (fsp->hsfs_ptbl_idx != NULL) | |
354 kmem_free(fsp->hsfs_ptbl_idx, (size_t) | |
355 (fsp->hsfs_ptbl_idx_size * sizeof (struct ptable_idx))); | |
356 | |
357 /* free "mounted on" pathame */ | |
358 if (fsp->hsfs_fsmnt != NULL) | |
359 kmem_free(fsp->hsfs_fsmnt, strlen(fsp->hsfs_fsmnt) + 1); | |
360 | |
361 mutex_destroy(&fsp->hsfs_free_lock); | |
362 rw_destroy(&fsp->hsfs_hash_lock); | |
363 | |
364 kmem_free(fsp, sizeof (*fsp)); | |
365 return (0); | |
366 } | |
367 | |
368 /*ARGSUSED*/ | |
369 static int | |
370 hsfs_root(struct vfs *vfsp, struct vnode **vpp) | |
371 { | |
372 *vpp = (VFS_TO_HSFS(vfsp))->hsfs_rootvp; | |
373 VN_HOLD(*vpp); | |
374 return (0); | |
375 } | |
376 | |
377 /*ARGSUSED*/ | |
378 static int | |
379 hsfs_statvfs(struct vfs *vfsp, struct statvfs64 *sbp) | |
380 { | |
381 struct hsfs *fsp; | |
382 dev32_t d32; | |
383 | |
384 fsp = VFS_TO_HSFS(vfsp); | |
385 if (fsp->hsfs_magic != HSFS_MAGIC) | |
386 return (EINVAL); | |
387 bzero(sbp, sizeof (*sbp)); | |
388 sbp->f_bsize = vfsp->vfs_bsize; | |
389 sbp->f_frsize = sbp->f_bsize; /* no fragment, same as block size */ | |
390 sbp->f_blocks = (fsblkcnt64_t)fsp->hsfs_vol.vol_size; | |
391 | |
392 sbp->f_bfree = (fsblkcnt64_t)0; | |
393 sbp->f_bavail = (fsblkcnt64_t)0; | |
394 sbp->f_files = (fsfilcnt64_t)-1; | |
395 sbp->f_ffree = (fsfilcnt64_t)0; | |
396 sbp->f_favail = (fsfilcnt64_t)0; | |
397 (void) cmpldev(&d32, vfsp->vfs_dev); | |
398 sbp->f_fsid = d32; | |
399 (void) strcpy(sbp->f_basetype, vfssw[vfsp->vfs_fstype].vsw_name); | |
400 sbp->f_flag = vf_to_stf(vfsp->vfs_flag); | |
401 sbp->f_namemax = fsp->hsfs_namemax; | |
402 (void) strcpy(sbp->f_fstr, fsp->hsfs_vol.vol_id); | |
403 | |
404 return (0); | |
405 } | |
406 | |
407 /* | |
408 * Previously nodeid was declared as uint32_t. This has been changed | |
409 * to conform better with the ISO9660 standard. The standard states that | |
410 * a LBN can be a 32 bit number, as the MAKE_NODEID macro shifts this | |
411 * LBN 11 places left (LBN_TO_BYTE) and then shifts the result 5 right | |
412 * (divide by 32) we are left with the potential of an overflow if | |
413 * confined to a 32 bit value. | |
414 */ | |
415 | |
416 static int | |
417 hsfs_vget(struct vfs *vfsp, struct vnode **vpp, struct fid *fidp) | |
418 { | |
419 struct hsfid *fid; | |
420 struct hsfs *fsp; | |
421 ino64_t nodeid; | |
422 int error; | |
423 | |
424 fsp = (struct hsfs *)VFS_TO_HSFS(vfsp); | |
425 fid = (struct hsfid *)fidp; | |
426 | |
427 /* | |
428 * Look for vnode on hashlist. | |
429 * If found, it's now active and the refcnt was incremented. | |
430 */ | |
431 | |
432 rw_enter(&fsp->hsfs_hash_lock, RW_READER); | |
433 | |
434 nodeid = (ino64_t)MAKE_NODEID(fid->hf_dir_lbn, fid->hf_dir_off, vfsp); | |
435 | |
436 if ((*vpp = hs_findhash(nodeid, vfsp)) == NULL) { | |
437 /* | |
438 * Not in cache, so we need to remake it. | |
439 * hs_remakenode() will read the directory entry | |
440 * and then check again to see if anyone else has | |
441 * put it in the cache. | |
442 */ | |
443 rw_exit(&fsp->hsfs_hash_lock); | |
444 error = hs_remakenode(fid->hf_dir_lbn, (uint_t)fid->hf_dir_off, | |
445 vfsp, vpp); | |
446 return (error); | |
447 } | |
448 rw_exit(&fsp->hsfs_hash_lock); | |
449 return (0); | |
450 } | |
451 | |
452 | |
453 #define CHECKSUM_SIZE (64 * 1024) | |
454 | |
455 /* | |
456 * Compute a CD-ROM fsid by checksumming the first 64K of data on the CD | |
457 * We use the 'fsp' argument to determine the location of the root | |
458 * directory entry, and we start reading from there. | |
459 */ | |
460 static int | |
461 compute_cdrom_id(struct hsfs *fsp, vnode_t *devvp) | |
462 { | |
463 uint_t secno; | |
464 struct hs_volume *hsvp = &fsp->hsfs_vol; | |
465 struct buf *bp; | |
466 int error; | |
467 int fsid; | |
468 | |
469 secno = hsvp->root_dir.ext_lbn >> hsvp->lbn_secshift; | |
494
e082e44c7fce
6244328 hsfs not resistant against malformed ISO9660 filesystems, crashes/hangs
frankho
parents:
0
diff
changeset
|
470 bp = bread(devvp->v_rdev, secno * 4, CHECKSUM_SIZE); |
0 | 471 error = geterror(bp); |
494
e082e44c7fce
6244328 hsfs not resistant against malformed ISO9660 filesystems, crashes/hangs
frankho
parents:
0
diff
changeset
|
472 |
e082e44c7fce
6244328 hsfs not resistant against malformed ISO9660 filesystems, crashes/hangs
frankho
parents:
0
diff
changeset
|
473 /* |
e082e44c7fce
6244328 hsfs not resistant against malformed ISO9660 filesystems, crashes/hangs
frankho
parents:
0
diff
changeset
|
474 * An error on read or a partial read means we asked |
e082e44c7fce
6244328 hsfs not resistant against malformed ISO9660 filesystems, crashes/hangs
frankho
parents:
0
diff
changeset
|
475 * for a nonexistant/corrupted piece of the device |
e082e44c7fce
6244328 hsfs not resistant against malformed ISO9660 filesystems, crashes/hangs
frankho
parents:
0
diff
changeset
|
476 * (including past-the-end of the media). Don't |
e082e44c7fce
6244328 hsfs not resistant against malformed ISO9660 filesystems, crashes/hangs
frankho
parents:
0
diff
changeset
|
477 * try to use the checksumming method then. |
e082e44c7fce
6244328 hsfs not resistant against malformed ISO9660 filesystems, crashes/hangs
frankho
parents:
0
diff
changeset
|
478 */ |
e082e44c7fce
6244328 hsfs not resistant against malformed ISO9660 filesystems, crashes/hangs
frankho
parents:
0
diff
changeset
|
479 if (!error && bp->b_bcount == CHECKSUM_SIZE) { |
0 | 480 int *ibuf = (int *)bp->b_un.b_addr; |
481 int i; | |
482 | |
483 fsid = 0; | |
484 | |
494
e082e44c7fce
6244328 hsfs not resistant against malformed ISO9660 filesystems, crashes/hangs
frankho
parents:
0
diff
changeset
|
485 for (i = 0; i < CHECKSUM_SIZE / sizeof (int); i++) |
0 | 486 fsid ^= ibuf[ i ]; |
494
e082e44c7fce
6244328 hsfs not resistant against malformed ISO9660 filesystems, crashes/hangs
frankho
parents:
0
diff
changeset
|
487 } else { |
e082e44c7fce
6244328 hsfs not resistant against malformed ISO9660 filesystems, crashes/hangs
frankho
parents:
0
diff
changeset
|
488 /* |
e082e44c7fce
6244328 hsfs not resistant against malformed ISO9660 filesystems, crashes/hangs
frankho
parents:
0
diff
changeset
|
489 * Fallback - use creation date |
e082e44c7fce
6244328 hsfs not resistant against malformed ISO9660 filesystems, crashes/hangs
frankho
parents:
0
diff
changeset
|
490 */ |
0 | 491 fsid = hsvp->cre_date.tv_sec; |
494
e082e44c7fce
6244328 hsfs not resistant against malformed ISO9660 filesystems, crashes/hangs
frankho
parents:
0
diff
changeset
|
492 } |
0 | 493 |
494 brelse(bp); | |
495 | |
496 return (fsid); | |
497 } | |
498 | |
499 | |
500 /*ARGSUSED*/ | |
501 static int | |
502 hs_mountfs( | |
503 struct vfs *vfsp, | |
504 dev_t dev, | |
505 char *path, | |
506 mode_t mode, | |
507 int mount_flags, | |
508 struct cred *cr, | |
509 int isroot) | |
510 { | |
511 struct vnode *devvp; | |
512 struct hsfs *tsp; | |
513 struct hsfs *fsp = NULL; | |
514 struct vattr vap; | |
515 struct hsnode *hp; | |
516 int error; | |
517 struct timeval tv; | |
518 int fsid; | |
519 int use_rrip = (mount_flags & HSFSMNT_NORRIP) == 0; | |
520 | |
521 /* | |
522 * Open the device | |
523 */ | |
524 devvp = makespecvp(dev, VBLK); | |
525 ASSERT(devvp != 0); | |
526 | |
527 /* | |
528 * Open the target device (file) for read only. | |
529 */ | |
530 if (error = VOP_OPEN(&devvp, FREAD, cr)) { | |
531 VN_RELE(devvp); | |
532 return (error); | |
533 } | |
534 | |
535 /* | |
536 * Refuse to go any further if this | |
537 * device is being used for swapping | |
538 */ | |
539 if (IS_SWAPVP(common_specvp(devvp))) { | |
540 error = EBUSY; | |
541 goto cleanup; | |
542 } | |
543 | |
544 vap.va_mask = AT_SIZE; | |
545 if ((error = VOP_GETATTR(devvp, &vap, ATTR_COMM, cr)) != 0) { | |
546 cmn_err(CE_NOTE, "Cannot get attributes of the CD-ROM driver"); | |
547 goto cleanup; | |
548 } | |
549 | |
550 /* | |
551 * Make sure we have a nonzero size partition. | |
552 * The current version of the SD driver will *not* fail the open | |
553 * of such a partition so we have to check for it here. | |
554 */ | |
555 if (vap.va_size == 0) { | |
556 error = ENXIO; | |
557 goto cleanup; | |
558 } | |
559 | |
560 /* | |
561 * Init a new hsfs structure. | |
562 */ | |
563 fsp = kmem_zalloc(sizeof (*fsp), KM_SLEEP); | |
564 | |
565 /* hardwire perms, uid, gid */ | |
566 fsp->hsfs_vol.vol_uid = hsfs_default_uid; | |
567 fsp->hsfs_vol.vol_gid = hsfs_default_gid; | |
568 fsp->hsfs_vol.vol_prot = hsfs_default_mode; | |
569 | |
570 /* | |
571 * Look for a Standard File Structure Volume Descriptor, | |
572 * of which there must be at least one. | |
573 * If found, check for volume size consistency. | |
574 */ | |
1025
1aef26bcfa0e
6300064 hsfs_spec.h has developed a southern drawl.
frankho
parents:
494
diff
changeset
|
575 error = hs_findisovol(fsp, devvp, &fsp->hsfs_vol); |
1aef26bcfa0e
6300064 hsfs_spec.h has developed a southern drawl.
frankho
parents:
494
diff
changeset
|
576 if (error == EINVAL) /* no iso 9660 - try high sierra ... */ |
1aef26bcfa0e
6300064 hsfs_spec.h has developed a southern drawl.
frankho
parents:
494
diff
changeset
|
577 error = hs_findhsvol(fsp, devvp, &fsp->hsfs_vol); |
0 | 578 |
579 if (error) | |
580 goto cleanup; | |
581 | |
582 /* | |
583 * Generate a file system ID from the CD-ROM, | |
584 * and check it for uniqueness. | |
585 * | |
586 * What we are aiming for is some chance of integrity | |
587 * across disk change. That is, if a client has an fhandle, | |
588 * it will be valid as long as the same disk is mounted. | |
589 */ | |
590 fsid = compute_cdrom_id(fsp, devvp); | |
591 | |
592 mutex_enter(&hs_mounttab_lock); | |
593 | |
594 if (fsid == 0 || fsid == -1) { | |
595 uniqtime(&tv); | |
596 fsid = tv.tv_sec; | |
597 } else /* make sure that the fsid is unique */ | |
598 for (tsp = hs_mounttab; tsp != NULL; tsp = tsp->hsfs_next) { | |
599 if (fsid == tsp->hsfs_vfs->vfs_fsid.val[0]) { | |
600 uniqtime(&tv); | |
601 fsid = tv.tv_sec; | |
602 break; | |
603 } | |
604 } | |
605 | |
606 fsp->hsfs_next = hs_mounttab; | |
607 hs_mounttab = fsp; | |
608 | |
609 fsp->hsfs_devvp = devvp; | |
610 fsp->hsfs_vfs = vfsp; | |
611 fsp->hsfs_fsmnt = kmem_alloc(strlen(path) + 1, KM_SLEEP); | |
612 (void) strcpy(fsp->hsfs_fsmnt, path); | |
613 | |
614 mutex_init(&fsp->hsfs_free_lock, NULL, MUTEX_DEFAULT, NULL); | |
615 rw_init(&fsp->hsfs_hash_lock, NULL, RW_DEFAULT, NULL); | |
616 | |
617 vfsp->vfs_data = (caddr_t)fsp; | |
618 vfsp->vfs_dev = dev; | |
619 vfsp->vfs_fstype = hsfsfstype; | |
620 vfsp->vfs_bsize = fsp->hsfs_vol.lbn_size; /* %% */ | |
621 vfsp->vfs_fsid.val[0] = fsid; | |
622 vfsp->vfs_fsid.val[1] = hsfsfstype; | |
623 | |
624 /* | |
625 * If the root directory does not appear to be | |
626 * valid, use what it points to as "." instead. | |
627 * Some Defense Mapping Agency disks are non-conformant | |
628 * in this way. | |
629 */ | |
630 if (!hsfs_valid_dir(&fsp->hsfs_vol.root_dir)) { | |
631 hs_log_bogus_disk_warning(fsp, HSFS_ERR_BAD_ROOT_DIR, 0); | |
632 if (hs_remakenode(fsp->hsfs_vol.root_dir.ext_lbn, | |
633 (uint_t)0, vfsp, &fsp->hsfs_rootvp)) { | |
634 error = EINVAL; | |
1025
1aef26bcfa0e
6300064 hsfs_spec.h has developed a southern drawl.
frankho
parents:
494
diff
changeset
|
635 hs_mounttab = hs_mounttab->hsfs_next; |
1aef26bcfa0e
6300064 hsfs_spec.h has developed a southern drawl.
frankho
parents:
494
diff
changeset
|
636 mutex_destroy(&fsp->hsfs_free_lock); |
1aef26bcfa0e
6300064 hsfs_spec.h has developed a southern drawl.
frankho
parents:
494
diff
changeset
|
637 rw_destroy(&fsp->hsfs_hash_lock); |
1aef26bcfa0e
6300064 hsfs_spec.h has developed a southern drawl.
frankho
parents:
494
diff
changeset
|
638 kmem_free(fsp->hsfs_fsmnt, strlen(path) + 1); |
494
e082e44c7fce
6244328 hsfs not resistant against malformed ISO9660 filesystems, crashes/hangs
frankho
parents:
0
diff
changeset
|
639 mutex_exit(&hs_mounttab_lock); |
0 | 640 goto cleanup; |
641 } | |
642 } else { | |
643 fsp->hsfs_rootvp = hs_makenode(&fsp->hsfs_vol.root_dir, | |
644 fsp->hsfs_vol.root_dir.ext_lbn, 0, vfsp); | |
645 } | |
646 | |
647 /* mark vnode as VROOT */ | |
648 fsp->hsfs_rootvp->v_flag |= VROOT; | |
649 | |
650 /* Here we take care of some special case stuff for mountroot */ | |
651 if (isroot) { | |
652 fsp->hsfs_rootvp->v_rdev = devvp->v_rdev; | |
653 rootvp = fsp->hsfs_rootvp; | |
654 } | |
655 | |
656 /* XXX - ignore the path table for now */ | |
657 fsp->hsfs_ptbl = NULL; | |
658 hp = VTOH(fsp->hsfs_rootvp); | |
659 hp->hs_ptbl_idx = NULL; | |
660 | |
661 if (use_rrip) | |
662 hs_check_root_dirent(fsp->hsfs_rootvp, &(hp->hs_dirent)); | |
663 | |
664 fsp->hsfs_namemax = IS_RRIP_IMPLEMENTED(fsp) | |
665 ? RRIP_FILE_NAMELEN | |
666 : ISO_FILE_NAMELEN; | |
667 /* | |
668 * if RRIP, don't copy NOMAPLCASE or NOTRAILDOT to hsfs_flags | |
669 */ | |
670 if (IS_RRIP_IMPLEMENTED(fsp)) | |
671 mount_flags &= ~(HSFSMNT_NOMAPLCASE | HSFSMNT_NOTRAILDOT); | |
672 | |
673 fsp->hsfs_flags = mount_flags; | |
674 | |
675 /* set the magic word */ | |
676 fsp->hsfs_magic = HSFS_MAGIC; | |
677 mutex_exit(&hs_mounttab_lock); | |
678 | |
679 return (0); | |
680 | |
681 cleanup: | |
682 (void) VOP_CLOSE(devvp, FREAD, 1, (offset_t)0, cr); | |
683 VN_RELE(devvp); | |
684 if (fsp) | |
685 kmem_free(fsp, sizeof (*fsp)); | |
686 return (error); | |
687 } | |
688 | |
689 /* | |
690 * hs_findhsvol() | |
691 * | |
692 * Locate the Standard File Structure Volume Descriptor and | |
693 * parse it into an hs_volume structure. | |
694 * | |
695 * XXX - May someday want to look for Coded Character Set FSVD, too. | |
696 */ | |
697 static int | |
698 hs_findhsvol(struct hsfs *fsp, struct vnode *vp, struct hs_volume *hvp) | |
699 { | |
700 struct buf *secbp; | |
701 int i; | |
702 uchar_t *volp; | |
703 int error; | |
704 uint_t secno; | |
705 | |
706 secno = hs_findvoldesc(vp->v_rdev, HS_VOLDESC_SEC); | |
707 secbp = bread(vp->v_rdev, secno * 4, HS_SECTOR_SIZE); | |
708 error = geterror(secbp); | |
709 | |
710 if (error != 0) { | |
711 cmn_err(CE_NOTE, "hs_findhsvol: bread: error=(%d)", error); | |
712 brelse(secbp); | |
713 return (error); | |
714 } | |
715 | |
716 volp = (uchar_t *)secbp->b_un.b_addr; | |
717 | |
718 while (HSV_DESC_TYPE(volp) != VD_EOV) { | |
719 for (i = 0; i < HSV_ID_STRLEN; i++) | |
720 if (HSV_STD_ID(volp)[i] != HSV_ID_STRING[i]) | |
721 goto cantfind; | |
722 if (HSV_STD_VER(volp) != HSV_ID_VER) | |
723 goto cantfind; | |
724 switch (HSV_DESC_TYPE(volp)) { | |
725 case VD_SFS: | |
726 /* Standard File Structure */ | |
727 fsp->hsfs_vol_type = HS_VOL_TYPE_HS; | |
728 error = hs_parsehsvol(fsp, volp, hvp); | |
729 brelse(secbp); | |
730 return (error); | |
731 | |
732 case VD_CCFS: | |
733 /* Coded Character File Structure */ | |
734 case VD_BOOT: | |
735 case VD_UNSPEC: | |
736 case VD_EOV: | |
737 break; | |
738 } | |
739 brelse(secbp); | |
740 ++secno; | |
741 secbp = bread(vp->v_rdev, secno * 4, HS_SECTOR_SIZE); | |
742 | |
743 error = geterror(secbp); | |
744 | |
745 if (error != 0) { | |
746 cmn_err(CE_NOTE, "hs_findhsvol: bread: error=(%d)", | |
747 error); | |
748 brelse(secbp); | |
749 return (error); | |
750 } | |
751 | |
752 volp = (uchar_t *)secbp->b_un.b_addr; | |
753 } | |
754 cantfind: | |
755 brelse(secbp); | |
756 return (EINVAL); | |
757 } | |
758 | |
759 /* | |
760 * hs_parsehsvol | |
761 * | |
762 * Parse the Standard File Structure Volume Descriptor into | |
763 * an hs_volume structure. We can't just bcopy it into the | |
764 * structure because of byte-ordering problems. | |
765 * | |
766 */ | |
767 static int | |
768 hs_parsehsvol(struct hsfs *fsp, uchar_t *volp, struct hs_volume *hvp) | |
769 { | |
770 hvp->vol_size = HSV_VOL_SIZE(volp); | |
771 hvp->lbn_size = HSV_BLK_SIZE(volp); | |
772 if (hvp->lbn_size == 0) { | |
773 cmn_err(CE_NOTE, "hs_parsehsvol: logical block size in the " | |
774 "SFSVD is zero"); | |
775 return (EINVAL); | |
776 } | |
777 hvp->lbn_shift = ffs((long)hvp->lbn_size) - 1; | |
778 hvp->lbn_secshift = ffs((long)howmany(HS_SECTOR_SIZE, | |
779 (int)hvp->lbn_size)) - 1; | |
780 hvp->lbn_maxoffset = hvp->lbn_size - 1; | |
781 hs_parse_longdate(HSV_cre_date(volp), &hvp->cre_date); | |
782 hs_parse_longdate(HSV_mod_date(volp), &hvp->mod_date); | |
783 hvp->file_struct_ver = HSV_FILE_STRUCT_VER(volp); | |
784 hvp->ptbl_len = HSV_PTBL_SIZE(volp); | |
785 hvp->vol_set_size = (ushort_t)HSV_SET_SIZE(volp); | |
786 hvp->vol_set_seq = (ushort_t)HSV_SET_SEQ(volp); | |
787 #if defined(_LITTLE_ENDIAN) | |
788 hvp->ptbl_lbn = HSV_PTBL_MAN_LS(volp); | |
789 #else | |
790 hvp->ptbl_lbn = HSV_PTBL_MAN_MS(volp); | |
791 #endif | |
792 hs_copylabel(hvp, HSV_VOL_ID(volp)); | |
793 | |
794 /* | |
795 * Make sure that lbn_size is a power of two and otherwise valid. | |
796 */ | |
797 if (hvp->lbn_size & ~(1 << hvp->lbn_shift)) { | |
798 cmn_err(CE_NOTE, | |
799 "hsfs: %d-byte logical block size not supported", | |
800 hvp->lbn_size); | |
801 return (EINVAL); | |
802 } | |
803 return (hs_parsedir(fsp, HSV_ROOT_DIR(volp), &hvp->root_dir, | |
804 (char *)NULL, (int *)NULL)); | |
805 } | |
806 | |
807 /* | |
808 * hs_findisovol() | |
809 * | |
810 * Locate the Primary Volume Descriptor | |
811 * parse it into an hs_volume structure. | |
812 * | |
813 * XXX - Supplementary, Partition not yet done | |
814 */ | |
815 static int | |
816 hs_findisovol(struct hsfs *fsp, struct vnode *vp, | |
817 struct hs_volume *hvp) | |
818 { | |
819 struct buf *secbp; | |
820 int i; | |
821 uchar_t *volp; | |
822 int error; | |
823 uint_t secno; | |
824 int foundpvd = 0; | |
825 | |
826 secno = hs_findvoldesc(vp->v_rdev, ISO_VOLDESC_SEC); | |
827 secbp = bread(vp->v_rdev, secno * 4, ISO_SECTOR_SIZE); | |
828 error = geterror(secbp); | |
829 | |
830 if (error != 0) { | |
831 cmn_err(CE_NOTE, "hs_findisovol: bread: error=(%d)", error); | |
832 brelse(secbp); | |
833 return (error); | |
834 } | |
835 | |
836 volp = (uchar_t *)secbp->b_un.b_addr; | |
837 | |
838 while ((enum iso_voldesc_type) ISO_DESC_TYPE(volp) != ISO_VD_EOV) { | |
839 for (i = 0; i < ISO_ID_STRLEN; i++) | |
840 if (ISO_STD_ID(volp)[i] != ISO_ID_STRING[i]) | |
841 goto cantfind; | |
842 if (ISO_STD_VER(volp) != ISO_ID_VER) | |
843 goto cantfind; | |
844 switch (ISO_DESC_TYPE(volp)) { | |
845 case ISO_VD_PVD: | |
846 /* Standard File Structure */ | |
847 if (foundpvd != 1) { | |
848 fsp->hsfs_vol_type = HS_VOL_TYPE_ISO; | |
849 if (error = hs_parseisovol(fsp, volp, hvp)) { | |
850 brelse(secbp); | |
851 return (error); | |
852 } | |
853 foundpvd = 1; | |
854 } | |
855 break; | |
856 case ISO_VD_SVD: | |
857 /* Supplementary Volume Descriptor */ | |
858 break; | |
859 case ISO_VD_BOOT: | |
860 break; | |
861 case ISO_VD_VPD: | |
862 /* currently cannot handle partition */ | |
863 break; | |
864 case VD_EOV: | |
865 break; | |
866 } | |
867 brelse(secbp); | |
868 ++secno; | |
869 secbp = bread(vp->v_rdev, secno * 4, HS_SECTOR_SIZE); | |
870 error = geterror(secbp); | |
871 | |
872 if (error != 0) { | |
873 cmn_err(CE_NOTE, "hs_findisovol: bread: error=(%d)", | |
874 error); | |
875 brelse(secbp); | |
876 return (error); | |
877 } | |
878 | |
879 volp = (uchar_t *)secbp->b_un.b_addr; | |
880 } | |
881 if (foundpvd) { | |
882 brelse(secbp); | |
883 return (0); | |
884 } | |
885 cantfind: | |
886 brelse(secbp); | |
887 return (EINVAL); | |
888 } | |
889 /* | |
890 * hs_parseisovol | |
891 * | |
892 * Parse the Primary Volume Descriptor into an hs_volume structure. | |
893 * | |
894 */ | |
895 static int | |
896 hs_parseisovol(struct hsfs *fsp, uchar_t *volp, struct hs_volume *hvp) | |
897 { | |
898 hvp->vol_size = ISO_VOL_SIZE(volp); | |
899 hvp->lbn_size = ISO_BLK_SIZE(volp); | |
900 if (hvp->lbn_size == 0) { | |
901 cmn_err(CE_NOTE, "hs_parseisovol: logical block size in the " | |
902 "PVD is zero"); | |
903 return (EINVAL); | |
904 } | |
905 hvp->lbn_shift = ffs((long)hvp->lbn_size) - 1; | |
906 hvp->lbn_secshift = ffs((long)howmany(ISO_SECTOR_SIZE, | |
907 (int)hvp->lbn_size)) - 1; | |
908 hvp->lbn_maxoffset = hvp->lbn_size - 1; | |
909 hs_parse_longdate(ISO_cre_date(volp), &hvp->cre_date); | |
910 hs_parse_longdate(ISO_mod_date(volp), &hvp->mod_date); | |
911 hvp->file_struct_ver = ISO_FILE_STRUCT_VER(volp); | |
912 hvp->ptbl_len = ISO_PTBL_SIZE(volp); | |
913 hvp->vol_set_size = (ushort_t)ISO_SET_SIZE(volp); | |
914 hvp->vol_set_seq = (ushort_t)ISO_SET_SEQ(volp); | |
915 #if defined(_LITTLE_ENDIAN) | |
916 hvp->ptbl_lbn = ISO_PTBL_MAN_LS(volp); | |
917 #else | |
918 hvp->ptbl_lbn = ISO_PTBL_MAN_MS(volp); | |
919 #endif | |
920 hs_copylabel(hvp, ISO_VOL_ID(volp)); | |
921 | |
922 /* | |
923 * Make sure that lbn_size is a power of two and otherwise valid. | |
924 */ | |
925 if (hvp->lbn_size & ~(1 << hvp->lbn_shift)) { | |
926 cmn_err(CE_NOTE, | |
927 "hsfs: %d-byte logical block size not supported", | |
928 hvp->lbn_size); | |
929 return (EINVAL); | |
930 } | |
931 return (hs_parsedir(fsp, ISO_ROOT_DIR(volp), &hvp->root_dir, | |
932 (char *)NULL, (int *)NULL)); | |
933 } | |
934 | |
935 /* | |
936 * Common code for mount and umount. | |
937 * Check that the user's argument is a reasonable | |
938 * thing on which to mount, and return the device number if so. | |
939 */ | |
940 static int | |
941 hs_getmdev(struct vfs *vfsp, char *fspec, int flags, dev_t *pdev, mode_t *mode, | |
942 cred_t *cr) | |
943 { | |
944 int error; | |
945 struct vnode *vp; | |
946 struct vattr vap; | |
947 dev_t dev; | |
948 | |
949 /* | |
950 * Get the device to be mounted | |
951 */ | |
952 error = lookupname(fspec, (flags & MS_SYSSPACE) ? | |
953 UIO_SYSSPACE : UIO_USERSPACE, FOLLOW, NULLVPP, &vp); | |
954 if (error) { | |
955 if (error == ENOENT) { | |
956 return (ENODEV); /* needs translation */ | |
957 } | |
958 return (error); | |
959 } | |
960 if (vp->v_type != VBLK) { | |
961 VN_RELE(vp); | |
962 return (ENOTBLK); | |
963 } | |
964 /* | |
965 * Can we read from the device? | |
966 */ | |
967 if ((error = VOP_ACCESS(vp, VREAD, 0, cr)) != 0 || | |
968 (error = secpolicy_spec_open(cr, vp, FREAD)) != 0) { | |
969 VN_RELE(vp); | |
970 return (error); | |
971 } | |
972 | |
973 vap.va_mask = AT_MODE; /* get protection mode */ | |
974 (void) VOP_GETATTR(vp, &vap, 0, CRED()); | |
975 *mode = vap.va_mode; | |
976 | |
977 dev = *pdev = vp->v_rdev; | |
978 VN_RELE(vp); | |
979 | |
980 /* | |
981 * Ensure that this device isn't already mounted, | |
982 * unless this is a REMOUNT request or we are told to suppress | |
983 * mount checks. | |
984 */ | |
985 if ((flags & MS_NOCHECK) == 0) { | |
986 if (vfs_devmounting(dev, vfsp)) | |
987 return (EBUSY); | |
988 if (vfs_devismounted(dev) && !(flags & MS_REMOUNT)) | |
989 return (EBUSY); | |
990 } | |
991 | |
992 if (getmajor(*pdev) >= devcnt) | |
993 return (ENXIO); | |
994 return (0); | |
995 } | |
996 | |
997 static void | |
998 hs_copylabel(struct hs_volume *hvp, unsigned char *label) | |
999 { | |
1000 /* cdrom volid is at most 32 bytes */ | |
1001 bcopy(label, hvp->vol_id, 32); | |
1002 hvp->vol_id[31] = NULL; | |
1003 } | |
1004 | |
1005 /* | |
1006 * Mount root file system. | |
1007 * "why" is ROOT_INIT on initial call, ROOT_REMOUNT if called to | |
1008 * remount the root file system, and ROOT_UNMOUNT if called to | |
1009 * unmount the root (e.g., as part of a system shutdown). | |
1010 * | |
1011 * XXX - this may be partially machine-dependent; it, along with the VFS_SWAPVP | |
1012 * operation, goes along with auto-configuration. A mechanism should be | |
1013 * provided by which machine-INdependent code in the kernel can say "get me the | |
1014 * right root file system" and "get me the right initial swap area", and have | |
1015 * that done in what may well be a machine-dependent fashion. | |
1016 * Unfortunately, it is also file-system-type dependent (NFS gets it via | |
1017 * bootparams calls, UFS gets it from various and sundry machine-dependent | |
1018 * mechanisms, as SPECFS does for swap). | |
1019 */ | |
1020 static int | |
1021 hsfs_mountroot(struct vfs *vfsp, enum whymountroot why) | |
1022 { | |
1023 int error; | |
1024 struct hsfs *fsp; | |
1025 struct hs_volume *fvolp; | |
1026 static int hsfsrootdone = 0; | |
1027 dev_t rootdev; | |
1028 mode_t mode = 0; | |
1029 | |
1030 if (why == ROOT_INIT) { | |
1031 if (hsfsrootdone++) | |
1032 return (EBUSY); | |
1033 rootdev = getrootdev(); | |
1034 if (rootdev == (dev_t)NODEV) | |
1035 return (ENODEV); | |
1036 vfsp->vfs_dev = rootdev; | |
1037 vfsp->vfs_flag |= VFS_RDONLY; | |
1038 } else if (why == ROOT_REMOUNT) { | |
1039 cmn_err(CE_NOTE, "hsfs_mountroot: ROOT_REMOUNT"); | |
1040 return (0); | |
1041 } else if (why == ROOT_UNMOUNT) { | |
1042 return (0); | |
1043 } | |
1044 error = vfs_lock(vfsp); | |
1045 if (error) { | |
1046 cmn_err(CE_NOTE, "hsfs_mountroot: couldn't get vfs_lock"); | |
1047 return (error); | |
1048 } | |
1049 | |
1050 error = hs_mountfs(vfsp, rootdev, "/", mode, 1, CRED(), 1); | |
1051 /* | |
1052 * XXX - assumes root device is not indirect, because we don't set | |
1053 * rootvp. Is rootvp used for anything? If so, make another arg | |
1054 * to mountfs. | |
1055 */ | |
1056 if (error) { | |
1057 vfs_unlock(vfsp); | |
1058 if (rootvp) { | |
1059 VN_RELE(rootvp); | |
1060 rootvp = (struct vnode *)0; | |
1061 } | |
1062 return (error); | |
1063 } | |
1064 if (why == ROOT_INIT) | |
1065 vfs_add((struct vnode *)0, vfsp, | |
1066 (vfsp->vfs_flag & VFS_RDONLY) ? MS_RDONLY : 0); | |
1067 vfs_unlock(vfsp); | |
1068 fsp = VFS_TO_HSFS(vfsp); | |
1069 fvolp = &fsp->hsfs_vol; | |
1070 #ifdef HSFS_CLKSET | |
1071 if (fvolp->cre_date.tv_sec == 0) { | |
1072 cmn_err(CE_NOTE, "hsfs_mountroot: cre_date.tv_sec == 0"); | |
1073 if (fvolp->mod_date.tv_sec == 0) { | |
1074 cmn_err(CE_NOTE, "hsfs_mountroot: mod_date.tv_sec == 0"); | |
1075 cmn_err(CE_NOTE, "hsfs_mountroot: clkset(-1L)"); | |
1076 clkset(-1L); | |
1077 } else | |
1078 clkset(fvolp->mod_date.tv_sec); | |
1079 } else | |
1080 clkset(fvolp->mod_date.tv_sec); | |
1081 #else /* HSFS_CLKSET */ | |
1082 clkset(-1L); | |
1083 #endif /* HSFS_CLKSET */ | |
1084 return (0); | |
1085 } | |
1086 | |
1087 /* | |
1088 * hs_findvoldesc() | |
1089 * | |
1090 * Return the sector where the volume descriptor lives. This is | |
1091 * a fixed value for "normal" cd-rom's, but can change for | |
1092 * multisession cd's. | |
1093 * | |
1094 * desc_sec is the same for high-sierra and iso 9660 formats, why | |
1095 * there are two differnt #defines used in the code for this is | |
1096 * beyond me. These are standards, cast in concrete, right? | |
1097 * To be general, however, this function supports passing in different | |
1098 * values. | |
1099 */ | |
1100 static int | |
1101 hs_findvoldesc(dev_t rdev, int desc_sec) | |
1102 { | |
1103 int secno; | |
1104 int error; | |
1105 int rval; /* ignored */ | |
1106 | |
1107 #ifdef CDROMREADOFFSET | |
1108 /* | |
1109 * Issue the Read Offset ioctl directly to the | |
1110 * device. Ignore any errors and set starting | |
1111 * secno to the default, otherwise add the | |
1112 * VOLDESC sector number to the offset. | |
1113 */ | |
1114 error = cdev_ioctl(rdev, CDROMREADOFFSET, (intptr_t)&secno, | |
1115 FNATIVE|FKIOCTL|FREAD, CRED(), &rval); | |
1116 if (error) { | |
1117 secno = desc_sec; | |
1118 } else { | |
1119 secno += desc_sec; | |
1120 } | |
1121 #else | |
1122 secno = desc_sec; | |
1123 #endif | |
1124 | |
1125 return (secno); | |
1126 } |