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34dc7c2f BB |
1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
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 | /* | |
428870ff | 22 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
a448a255 | 23 | * Copyright (c) 2012, 2018 by Delphix. All rights reserved. |
34dc7c2f BB |
24 | */ |
25 | ||
428870ff BB |
26 | /* Portions Copyright 2010 Robert Milkowski */ |
27 | ||
34dc7c2f BB |
28 | #include <sys/types.h> |
29 | #include <sys/param.h> | |
34dc7c2f BB |
30 | #include <sys/sysmacros.h> |
31 | #include <sys/kmem.h> | |
32 | #include <sys/pathname.h> | |
33 | #include <sys/vnode.h> | |
34 | #include <sys/vfs.h> | |
34dc7c2f | 35 | #include <sys/mntent.h> |
34dc7c2f | 36 | #include <sys/cmn_err.h> |
34dc7c2f | 37 | #include <sys/zfs_znode.h> |
3558fd73 | 38 | #include <sys/zfs_vnops.h> |
34dc7c2f BB |
39 | #include <sys/zfs_dir.h> |
40 | #include <sys/zil.h> | |
41 | #include <sys/fs/zfs.h> | |
42 | #include <sys/dmu.h> | |
43 | #include <sys/dsl_prop.h> | |
44 | #include <sys/dsl_dataset.h> | |
45 | #include <sys/dsl_deleg.h> | |
46 | #include <sys/spa.h> | |
47 | #include <sys/zap.h> | |
428870ff | 48 | #include <sys/sa.h> |
a94addd9 | 49 | #include <sys/sa_impl.h> |
34dc7c2f BB |
50 | #include <sys/policy.h> |
51 | #include <sys/atomic.h> | |
34dc7c2f | 52 | #include <sys/zfs_ioctl.h> |
ebe7e575 | 53 | #include <sys/zfs_ctldir.h> |
34dc7c2f | 54 | #include <sys/zfs_fuid.h> |
34dc7c2f | 55 | #include <sys/sunddi.h> |
34dc7c2f BB |
56 | #include <sys/dmu_objset.h> |
57 | #include <sys/spa_boot.h> | |
3558fd73 | 58 | #include <sys/zpl.h> |
428870ff | 59 | #include "zfs_comutil.h" |
34dc7c2f | 60 | |
1c2555ef BB |
61 | enum { |
62 | TOKEN_RO, | |
63 | TOKEN_RW, | |
64 | TOKEN_SETUID, | |
65 | TOKEN_NOSETUID, | |
66 | TOKEN_EXEC, | |
67 | TOKEN_NOEXEC, | |
68 | TOKEN_DEVICES, | |
69 | TOKEN_NODEVICES, | |
70 | TOKEN_DIRXATTR, | |
71 | TOKEN_SAXATTR, | |
72 | TOKEN_XATTR, | |
73 | TOKEN_NOXATTR, | |
74 | TOKEN_ATIME, | |
75 | TOKEN_NOATIME, | |
76 | TOKEN_RELATIME, | |
77 | TOKEN_NORELATIME, | |
78 | TOKEN_NBMAND, | |
79 | TOKEN_NONBMAND, | |
80 | TOKEN_MNTPOINT, | |
81 | TOKEN_LAST, | |
82 | }; | |
83 | ||
84 | static const match_table_t zpl_tokens = { | |
85 | { TOKEN_RO, MNTOPT_RO }, | |
86 | { TOKEN_RW, MNTOPT_RW }, | |
87 | { TOKEN_SETUID, MNTOPT_SETUID }, | |
88 | { TOKEN_NOSETUID, MNTOPT_NOSETUID }, | |
89 | { TOKEN_EXEC, MNTOPT_EXEC }, | |
90 | { TOKEN_NOEXEC, MNTOPT_NOEXEC }, | |
91 | { TOKEN_DEVICES, MNTOPT_DEVICES }, | |
92 | { TOKEN_NODEVICES, MNTOPT_NODEVICES }, | |
93 | { TOKEN_DIRXATTR, MNTOPT_DIRXATTR }, | |
94 | { TOKEN_SAXATTR, MNTOPT_SAXATTR }, | |
95 | { TOKEN_XATTR, MNTOPT_XATTR }, | |
96 | { TOKEN_NOXATTR, MNTOPT_NOXATTR }, | |
97 | { TOKEN_ATIME, MNTOPT_ATIME }, | |
98 | { TOKEN_NOATIME, MNTOPT_NOATIME }, | |
99 | { TOKEN_RELATIME, MNTOPT_RELATIME }, | |
100 | { TOKEN_NORELATIME, MNTOPT_NORELATIME }, | |
101 | { TOKEN_NBMAND, MNTOPT_NBMAND }, | |
102 | { TOKEN_NONBMAND, MNTOPT_NONBMAND }, | |
103 | { TOKEN_MNTPOINT, MNTOPT_MNTPOINT "=%s" }, | |
104 | { TOKEN_LAST, NULL }, | |
105 | }; | |
106 | ||
107 | static void | |
108 | zfsvfs_vfs_free(vfs_t *vfsp) | |
109 | { | |
110 | if (vfsp != NULL) { | |
111 | if (vfsp->vfs_mntpoint != NULL) | |
112 | strfree(vfsp->vfs_mntpoint); | |
113 | ||
114 | kmem_free(vfsp, sizeof (vfs_t)); | |
115 | } | |
116 | } | |
117 | ||
118 | static int | |
119 | zfsvfs_parse_option(char *option, int token, substring_t *args, vfs_t *vfsp) | |
120 | { | |
121 | switch (token) { | |
122 | case TOKEN_RO: | |
123 | vfsp->vfs_readonly = B_TRUE; | |
124 | vfsp->vfs_do_readonly = B_TRUE; | |
125 | break; | |
126 | case TOKEN_RW: | |
127 | vfsp->vfs_readonly = B_FALSE; | |
128 | vfsp->vfs_do_readonly = B_TRUE; | |
129 | break; | |
130 | case TOKEN_SETUID: | |
131 | vfsp->vfs_setuid = B_TRUE; | |
132 | vfsp->vfs_do_setuid = B_TRUE; | |
133 | break; | |
134 | case TOKEN_NOSETUID: | |
135 | vfsp->vfs_setuid = B_FALSE; | |
136 | vfsp->vfs_do_setuid = B_TRUE; | |
137 | break; | |
138 | case TOKEN_EXEC: | |
139 | vfsp->vfs_exec = B_TRUE; | |
140 | vfsp->vfs_do_exec = B_TRUE; | |
141 | break; | |
142 | case TOKEN_NOEXEC: | |
143 | vfsp->vfs_exec = B_FALSE; | |
144 | vfsp->vfs_do_exec = B_TRUE; | |
145 | break; | |
146 | case TOKEN_DEVICES: | |
147 | vfsp->vfs_devices = B_TRUE; | |
148 | vfsp->vfs_do_devices = B_TRUE; | |
149 | break; | |
150 | case TOKEN_NODEVICES: | |
151 | vfsp->vfs_devices = B_FALSE; | |
152 | vfsp->vfs_do_devices = B_TRUE; | |
153 | break; | |
154 | case TOKEN_DIRXATTR: | |
155 | vfsp->vfs_xattr = ZFS_XATTR_DIR; | |
156 | vfsp->vfs_do_xattr = B_TRUE; | |
157 | break; | |
158 | case TOKEN_SAXATTR: | |
159 | vfsp->vfs_xattr = ZFS_XATTR_SA; | |
160 | vfsp->vfs_do_xattr = B_TRUE; | |
161 | break; | |
162 | case TOKEN_XATTR: | |
163 | vfsp->vfs_xattr = ZFS_XATTR_DIR; | |
164 | vfsp->vfs_do_xattr = B_TRUE; | |
165 | break; | |
166 | case TOKEN_NOXATTR: | |
167 | vfsp->vfs_xattr = ZFS_XATTR_OFF; | |
168 | vfsp->vfs_do_xattr = B_TRUE; | |
169 | break; | |
170 | case TOKEN_ATIME: | |
171 | vfsp->vfs_atime = B_TRUE; | |
172 | vfsp->vfs_do_atime = B_TRUE; | |
173 | break; | |
174 | case TOKEN_NOATIME: | |
175 | vfsp->vfs_atime = B_FALSE; | |
176 | vfsp->vfs_do_atime = B_TRUE; | |
177 | break; | |
178 | case TOKEN_RELATIME: | |
179 | vfsp->vfs_relatime = B_TRUE; | |
180 | vfsp->vfs_do_relatime = B_TRUE; | |
181 | break; | |
182 | case TOKEN_NORELATIME: | |
183 | vfsp->vfs_relatime = B_FALSE; | |
184 | vfsp->vfs_do_relatime = B_TRUE; | |
185 | break; | |
186 | case TOKEN_NBMAND: | |
187 | vfsp->vfs_nbmand = B_TRUE; | |
188 | vfsp->vfs_do_nbmand = B_TRUE; | |
189 | break; | |
190 | case TOKEN_NONBMAND: | |
191 | vfsp->vfs_nbmand = B_FALSE; | |
192 | vfsp->vfs_do_nbmand = B_TRUE; | |
193 | break; | |
194 | case TOKEN_MNTPOINT: | |
195 | vfsp->vfs_mntpoint = match_strdup(&args[0]); | |
196 | if (vfsp->vfs_mntpoint == NULL) | |
197 | return (SET_ERROR(ENOMEM)); | |
198 | ||
199 | break; | |
200 | default: | |
201 | break; | |
202 | } | |
203 | ||
204 | return (0); | |
205 | } | |
206 | ||
207 | /* | |
208 | * Parse the raw mntopts and return a vfs_t describing the options. | |
209 | */ | |
210 | static int | |
211 | zfsvfs_parse_options(char *mntopts, vfs_t **vfsp) | |
212 | { | |
213 | vfs_t *tmp_vfsp; | |
214 | int error; | |
215 | ||
216 | tmp_vfsp = kmem_zalloc(sizeof (vfs_t), KM_SLEEP); | |
217 | ||
218 | if (mntopts != NULL) { | |
219 | substring_t args[MAX_OPT_ARGS]; | |
220 | char *tmp_mntopts, *p, *t; | |
221 | int token; | |
222 | ||
223 | tmp_mntopts = t = strdup(mntopts); | |
224 | if (tmp_mntopts == NULL) | |
225 | return (SET_ERROR(ENOMEM)); | |
226 | ||
227 | while ((p = strsep(&t, ",")) != NULL) { | |
228 | if (!*p) | |
229 | continue; | |
230 | ||
231 | args[0].to = args[0].from = NULL; | |
232 | token = match_token(p, zpl_tokens, args); | |
233 | error = zfsvfs_parse_option(p, token, args, tmp_vfsp); | |
234 | if (error) { | |
235 | strfree(tmp_mntopts); | |
236 | zfsvfs_vfs_free(tmp_vfsp); | |
237 | return (error); | |
238 | } | |
239 | } | |
240 | ||
241 | strfree(tmp_mntopts); | |
242 | } | |
243 | ||
244 | *vfsp = tmp_vfsp; | |
245 | ||
246 | return (0); | |
247 | } | |
248 | ||
249 | boolean_t | |
250 | zfs_is_readonly(zfsvfs_t *zfsvfs) | |
251 | { | |
252 | return (!!(zfsvfs->z_sb->s_flags & MS_RDONLY)); | |
253 | } | |
254 | ||
34dc7c2f BB |
255 | /*ARGSUSED*/ |
256 | int | |
03f9ba9d | 257 | zfs_sync(struct super_block *sb, int wait, cred_t *cr) |
34dc7c2f | 258 | { |
0037b49e | 259 | zfsvfs_t *zfsvfs = sb->s_fs_info; |
03f9ba9d | 260 | |
34dc7c2f BB |
261 | /* |
262 | * Data integrity is job one. We don't want a compromised kernel | |
263 | * writing to the storage pool, so we never sync during panic. | |
264 | */ | |
d5e53f9d | 265 | if (unlikely(oops_in_progress)) |
34dc7c2f BB |
266 | return (0); |
267 | ||
03f9ba9d BB |
268 | /* |
269 | * Semantically, the only requirement is that the sync be initiated. | |
270 | * The DMU syncs out txgs frequently, so there's nothing to do. | |
271 | */ | |
272 | if (!wait) | |
273 | return (0); | |
274 | ||
0037b49e | 275 | if (zfsvfs != NULL) { |
34dc7c2f BB |
276 | /* |
277 | * Sync a specific filesystem. | |
278 | */ | |
9babb374 | 279 | dsl_pool_t *dp; |
34dc7c2f | 280 | |
0037b49e BB |
281 | ZFS_ENTER(zfsvfs); |
282 | dp = dmu_objset_pool(zfsvfs->z_os); | |
9babb374 BB |
283 | |
284 | /* | |
285 | * If the system is shutting down, then skip any | |
286 | * filesystems which may exist on a suspended pool. | |
287 | */ | |
03f9ba9d | 288 | if (spa_suspended(dp->dp_spa)) { |
0037b49e | 289 | ZFS_EXIT(zfsvfs); |
9babb374 BB |
290 | return (0); |
291 | } | |
292 | ||
0037b49e BB |
293 | if (zfsvfs->z_log != NULL) |
294 | zil_commit(zfsvfs->z_log, 0); | |
428870ff | 295 | |
0037b49e | 296 | ZFS_EXIT(zfsvfs); |
34dc7c2f BB |
297 | } else { |
298 | /* | |
299 | * Sync all ZFS filesystems. This is what happens when you | |
300 | * run sync(1M). Unlike other filesystems, ZFS honors the | |
301 | * request by waiting for all pools to commit all dirty data. | |
302 | */ | |
303 | spa_sync_allpools(); | |
304 | } | |
305 | ||
306 | return (0); | |
307 | } | |
308 | ||
34dc7c2f BB |
309 | static void |
310 | atime_changed_cb(void *arg, uint64_t newval) | |
311 | { | |
0037b49e | 312 | ((zfsvfs_t *)arg)->z_atime = newval; |
34dc7c2f BB |
313 | } |
314 | ||
6d111134 TC |
315 | static void |
316 | relatime_changed_cb(void *arg, uint64_t newval) | |
317 | { | |
0037b49e | 318 | ((zfsvfs_t *)arg)->z_relatime = newval; |
6d111134 TC |
319 | } |
320 | ||
34dc7c2f BB |
321 | static void |
322 | xattr_changed_cb(void *arg, uint64_t newval) | |
323 | { | |
0037b49e | 324 | zfsvfs_t *zfsvfs = arg; |
34dc7c2f | 325 | |
82a37189 | 326 | if (newval == ZFS_XATTR_OFF) { |
0037b49e | 327 | zfsvfs->z_flags &= ~ZSB_XATTR; |
82a37189 | 328 | } else { |
0037b49e | 329 | zfsvfs->z_flags |= ZSB_XATTR; |
82a37189 BB |
330 | |
331 | if (newval == ZFS_XATTR_SA) | |
0037b49e | 332 | zfsvfs->z_xattr_sa = B_TRUE; |
82a37189 | 333 | else |
0037b49e | 334 | zfsvfs->z_xattr_sa = B_FALSE; |
82a37189 | 335 | } |
34dc7c2f BB |
336 | } |
337 | ||
023699cd MM |
338 | static void |
339 | acltype_changed_cb(void *arg, uint64_t newval) | |
340 | { | |
0037b49e | 341 | zfsvfs_t *zfsvfs = arg; |
023699cd MM |
342 | |
343 | switch (newval) { | |
344 | case ZFS_ACLTYPE_OFF: | |
0037b49e BB |
345 | zfsvfs->z_acl_type = ZFS_ACLTYPE_OFF; |
346 | zfsvfs->z_sb->s_flags &= ~MS_POSIXACL; | |
023699cd MM |
347 | break; |
348 | case ZFS_ACLTYPE_POSIXACL: | |
b695c34e | 349 | #ifdef CONFIG_FS_POSIX_ACL |
0037b49e BB |
350 | zfsvfs->z_acl_type = ZFS_ACLTYPE_POSIXACL; |
351 | zfsvfs->z_sb->s_flags |= MS_POSIXACL; | |
b695c34e | 352 | #else |
0037b49e BB |
353 | zfsvfs->z_acl_type = ZFS_ACLTYPE_OFF; |
354 | zfsvfs->z_sb->s_flags &= ~MS_POSIXACL; | |
b695c34e | 355 | #endif /* CONFIG_FS_POSIX_ACL */ |
023699cd MM |
356 | break; |
357 | default: | |
358 | break; | |
359 | } | |
360 | } | |
361 | ||
34dc7c2f BB |
362 | static void |
363 | blksz_changed_cb(void *arg, uint64_t newval) | |
364 | { | |
0037b49e BB |
365 | zfsvfs_t *zfsvfs = arg; |
366 | ASSERT3U(newval, <=, spa_maxblocksize(dmu_objset_spa(zfsvfs->z_os))); | |
f1512ee6 MA |
367 | ASSERT3U(newval, >=, SPA_MINBLOCKSIZE); |
368 | ASSERT(ISP2(newval)); | |
34dc7c2f | 369 | |
0037b49e | 370 | zfsvfs->z_max_blksz = newval; |
34dc7c2f BB |
371 | } |
372 | ||
373 | static void | |
374 | readonly_changed_cb(void *arg, uint64_t newval) | |
375 | { | |
0037b49e BB |
376 | zfsvfs_t *zfsvfs = arg; |
377 | struct super_block *sb = zfsvfs->z_sb; | |
34dc7c2f | 378 | |
2cf7f52b BB |
379 | if (sb == NULL) |
380 | return; | |
381 | ||
382 | if (newval) | |
3558fd73 | 383 | sb->s_flags |= MS_RDONLY; |
2cf7f52b | 384 | else |
3558fd73 | 385 | sb->s_flags &= ~MS_RDONLY; |
34dc7c2f BB |
386 | } |
387 | ||
388 | static void | |
389 | devices_changed_cb(void *arg, uint64_t newval) | |
390 | { | |
34dc7c2f BB |
391 | } |
392 | ||
393 | static void | |
394 | setuid_changed_cb(void *arg, uint64_t newval) | |
395 | { | |
34dc7c2f BB |
396 | } |
397 | ||
398 | static void | |
399 | exec_changed_cb(void *arg, uint64_t newval) | |
400 | { | |
34dc7c2f BB |
401 | } |
402 | ||
34dc7c2f BB |
403 | static void |
404 | nbmand_changed_cb(void *arg, uint64_t newval) | |
405 | { | |
0037b49e BB |
406 | zfsvfs_t *zfsvfs = arg; |
407 | struct super_block *sb = zfsvfs->z_sb; | |
3558fd73 | 408 | |
2cf7f52b BB |
409 | if (sb == NULL) |
410 | return; | |
411 | ||
412 | if (newval == TRUE) | |
3558fd73 | 413 | sb->s_flags |= MS_MANDLOCK; |
2cf7f52b | 414 | else |
3558fd73 | 415 | sb->s_flags &= ~MS_MANDLOCK; |
34dc7c2f BB |
416 | } |
417 | ||
418 | static void | |
419 | snapdir_changed_cb(void *arg, uint64_t newval) | |
420 | { | |
0037b49e | 421 | ((zfsvfs_t *)arg)->z_show_ctldir = newval; |
34dc7c2f BB |
422 | } |
423 | ||
424 | static void | |
425 | vscan_changed_cb(void *arg, uint64_t newval) | |
426 | { | |
0037b49e | 427 | ((zfsvfs_t *)arg)->z_vscan = newval; |
34dc7c2f BB |
428 | } |
429 | ||
34dc7c2f BB |
430 | static void |
431 | acl_inherit_changed_cb(void *arg, uint64_t newval) | |
432 | { | |
0037b49e | 433 | ((zfsvfs_t *)arg)->z_acl_inherit = newval; |
34dc7c2f BB |
434 | } |
435 | ||
1c2555ef BB |
436 | static int |
437 | zfs_register_callbacks(vfs_t *vfsp) | |
34dc7c2f BB |
438 | { |
439 | struct dsl_dataset *ds = NULL; | |
1c2555ef BB |
440 | objset_t *os = NULL; |
441 | zfsvfs_t *zfsvfs = NULL; | |
34dc7c2f BB |
442 | int error = 0; |
443 | ||
1c2555ef BB |
444 | ASSERT(vfsp); |
445 | zfsvfs = vfsp->vfs_data; | |
0037b49e | 446 | ASSERT(zfsvfs); |
1c2555ef | 447 | os = zfsvfs->z_os; |
0282c413 BB |
448 | |
449 | /* | |
450 | * The act of registering our callbacks will destroy any mount | |
451 | * options we may have. In order to enable temporary overrides | |
452 | * of mount options, we stash away the current values and | |
453 | * restore them after we register the callbacks. | |
454 | */ | |
0037b49e | 455 | if (zfs_is_readonly(zfsvfs) || !spa_writeable(dmu_objset_spa(os))) { |
1c2555ef BB |
456 | vfsp->vfs_do_readonly = B_TRUE; |
457 | vfsp->vfs_readonly = B_TRUE; | |
0282c413 | 458 | } |
34dc7c2f BB |
459 | |
460 | /* | |
461 | * Register property callbacks. | |
462 | * | |
463 | * It would probably be fine to just check for i/o error from | |
464 | * the first prop_register(), but I guess I like to go | |
465 | * overboard... | |
466 | */ | |
467 | ds = dmu_objset_ds(os); | |
13fe0198 | 468 | dsl_pool_config_enter(dmu_objset_pool(os), FTAG); |
3558fd73 | 469 | error = dsl_prop_register(ds, |
0037b49e | 470 | zfs_prop_to_name(ZFS_PROP_ATIME), atime_changed_cb, zfsvfs); |
98fad862 | 471 | error = error ? error : dsl_prop_register(ds, |
0037b49e | 472 | zfs_prop_to_name(ZFS_PROP_RELATIME), relatime_changed_cb, zfsvfs); |
34dc7c2f | 473 | error = error ? error : dsl_prop_register(ds, |
0037b49e | 474 | zfs_prop_to_name(ZFS_PROP_XATTR), xattr_changed_cb, zfsvfs); |
34dc7c2f | 475 | error = error ? error : dsl_prop_register(ds, |
0037b49e | 476 | zfs_prop_to_name(ZFS_PROP_RECORDSIZE), blksz_changed_cb, zfsvfs); |
34dc7c2f | 477 | error = error ? error : dsl_prop_register(ds, |
0037b49e | 478 | zfs_prop_to_name(ZFS_PROP_READONLY), readonly_changed_cb, zfsvfs); |
34dc7c2f | 479 | error = error ? error : dsl_prop_register(ds, |
0037b49e | 480 | zfs_prop_to_name(ZFS_PROP_DEVICES), devices_changed_cb, zfsvfs); |
34dc7c2f | 481 | error = error ? error : dsl_prop_register(ds, |
0037b49e | 482 | zfs_prop_to_name(ZFS_PROP_SETUID), setuid_changed_cb, zfsvfs); |
34dc7c2f | 483 | error = error ? error : dsl_prop_register(ds, |
0037b49e | 484 | zfs_prop_to_name(ZFS_PROP_EXEC), exec_changed_cb, zfsvfs); |
34dc7c2f | 485 | error = error ? error : dsl_prop_register(ds, |
0037b49e | 486 | zfs_prop_to_name(ZFS_PROP_SNAPDIR), snapdir_changed_cb, zfsvfs); |
34dc7c2f | 487 | error = error ? error : dsl_prop_register(ds, |
0037b49e | 488 | zfs_prop_to_name(ZFS_PROP_ACLTYPE), acltype_changed_cb, zfsvfs); |
023699cd | 489 | error = error ? error : dsl_prop_register(ds, |
0037b49e BB |
490 | zfs_prop_to_name(ZFS_PROP_ACLINHERIT), acl_inherit_changed_cb, |
491 | zfsvfs); | |
34dc7c2f | 492 | error = error ? error : dsl_prop_register(ds, |
0037b49e | 493 | zfs_prop_to_name(ZFS_PROP_VSCAN), vscan_changed_cb, zfsvfs); |
2cf7f52b | 494 | error = error ? error : dsl_prop_register(ds, |
0037b49e | 495 | zfs_prop_to_name(ZFS_PROP_NBMAND), nbmand_changed_cb, zfsvfs); |
13fe0198 | 496 | dsl_pool_config_exit(dmu_objset_pool(os), FTAG); |
34dc7c2f BB |
497 | if (error) |
498 | goto unregister; | |
499 | ||
0282c413 BB |
500 | /* |
501 | * Invoke our callbacks to restore temporary mount options. | |
502 | */ | |
1c2555ef BB |
503 | if (vfsp->vfs_do_readonly) |
504 | readonly_changed_cb(zfsvfs, vfsp->vfs_readonly); | |
505 | if (vfsp->vfs_do_setuid) | |
506 | setuid_changed_cb(zfsvfs, vfsp->vfs_setuid); | |
507 | if (vfsp->vfs_do_exec) | |
508 | exec_changed_cb(zfsvfs, vfsp->vfs_exec); | |
509 | if (vfsp->vfs_do_devices) | |
510 | devices_changed_cb(zfsvfs, vfsp->vfs_devices); | |
511 | if (vfsp->vfs_do_xattr) | |
512 | xattr_changed_cb(zfsvfs, vfsp->vfs_xattr); | |
513 | if (vfsp->vfs_do_atime) | |
514 | atime_changed_cb(zfsvfs, vfsp->vfs_atime); | |
515 | if (vfsp->vfs_do_relatime) | |
516 | relatime_changed_cb(zfsvfs, vfsp->vfs_relatime); | |
517 | if (vfsp->vfs_do_nbmand) | |
518 | nbmand_changed_cb(zfsvfs, vfsp->vfs_nbmand); | |
c9ada6d5 | 519 | |
34dc7c2f BB |
520 | return (0); |
521 | ||
522 | unregister: | |
0037b49e | 523 | dsl_prop_unregister_all(ds, zfsvfs); |
3558fd73 | 524 | return (error); |
34dc7c2f BB |
525 | } |
526 | ||
428870ff BB |
527 | static int |
528 | zfs_space_delta_cb(dmu_object_type_t bonustype, void *data, | |
9c5167d1 | 529 | uint64_t *userp, uint64_t *groupp, uint64_t *projectp) |
9babb374 | 530 | { |
9c5167d1 NF |
531 | sa_hdr_phys_t sa; |
532 | sa_hdr_phys_t *sap = data; | |
533 | uint64_t flags; | |
534 | int hdrsize; | |
535 | boolean_t swap = B_FALSE; | |
536 | ||
428870ff BB |
537 | /* |
538 | * Is it a valid type of object to track? | |
539 | */ | |
540 | if (bonustype != DMU_OT_ZNODE && bonustype != DMU_OT_SA) | |
2e528b49 | 541 | return (SET_ERROR(ENOENT)); |
9babb374 | 542 | |
428870ff BB |
543 | /* |
544 | * If we have a NULL data pointer | |
545 | * then assume the id's aren't changing and | |
546 | * return EEXIST to the dmu to let it know to | |
547 | * use the same ids | |
548 | */ | |
549 | if (data == NULL) | |
2e528b49 | 550 | return (SET_ERROR(EEXIST)); |
9babb374 | 551 | |
428870ff | 552 | if (bonustype == DMU_OT_ZNODE) { |
a94addd9 | 553 | znode_phys_t *znp = data; |
428870ff BB |
554 | *userp = znp->zp_uid; |
555 | *groupp = znp->zp_gid; | |
9c5167d1 NF |
556 | *projectp = ZFS_DEFAULT_PROJID; |
557 | return (0); | |
558 | } | |
559 | ||
560 | if (sap->sa_magic == 0) { | |
561 | /* | |
562 | * This should only happen for newly created files | |
563 | * that haven't had the znode data filled in yet. | |
564 | */ | |
565 | *userp = 0; | |
566 | *groupp = 0; | |
567 | *projectp = ZFS_DEFAULT_PROJID; | |
568 | return (0); | |
569 | } | |
570 | ||
571 | sa = *sap; | |
572 | if (sa.sa_magic == BSWAP_32(SA_MAGIC)) { | |
573 | sa.sa_magic = SA_MAGIC; | |
574 | sa.sa_layout_info = BSWAP_16(sa.sa_layout_info); | |
575 | swap = B_TRUE; | |
9babb374 | 576 | } else { |
9c5167d1 NF |
577 | VERIFY3U(sa.sa_magic, ==, SA_MAGIC); |
578 | } | |
a94addd9 | 579 | |
9c5167d1 NF |
580 | hdrsize = sa_hdrsize(&sa); |
581 | VERIFY3U(hdrsize, >=, sizeof (sa_hdr_phys_t)); | |
582 | ||
583 | *userp = *((uint64_t *)((uintptr_t)data + hdrsize + SA_UID_OFFSET)); | |
584 | *groupp = *((uint64_t *)((uintptr_t)data + hdrsize + SA_GID_OFFSET)); | |
585 | flags = *((uint64_t *)((uintptr_t)data + hdrsize + SA_FLAGS_OFFSET)); | |
586 | if (swap) | |
587 | flags = BSWAP_64(flags); | |
588 | ||
589 | if (flags & ZFS_PROJID) | |
590 | *projectp = *((uint64_t *)((uintptr_t)data + hdrsize + | |
591 | SA_PROJID_OFFSET)); | |
592 | else | |
593 | *projectp = ZFS_DEFAULT_PROJID; | |
594 | ||
595 | if (swap) { | |
596 | *userp = BSWAP_64(*userp); | |
597 | *groupp = BSWAP_64(*groupp); | |
598 | *projectp = BSWAP_64(*projectp); | |
9babb374 | 599 | } |
13fe0198 | 600 | return (0); |
9babb374 BB |
601 | } |
602 | ||
603 | static void | |
0037b49e | 604 | fuidstr_to_sid(zfsvfs_t *zfsvfs, const char *fuidstr, |
9babb374 BB |
605 | char *domainbuf, int buflen, uid_t *ridp) |
606 | { | |
9babb374 BB |
607 | uint64_t fuid; |
608 | const char *domain; | |
609 | ||
e19572e4 | 610 | fuid = zfs_strtonum(fuidstr, NULL); |
9babb374 | 611 | |
0037b49e | 612 | domain = zfs_fuid_find_by_idx(zfsvfs, FUID_INDEX(fuid)); |
9babb374 BB |
613 | if (domain) |
614 | (void) strlcpy(domainbuf, domain, buflen); | |
615 | else | |
616 | domainbuf[0] = '\0'; | |
617 | *ridp = FUID_RID(fuid); | |
618 | } | |
619 | ||
620 | static uint64_t | |
0037b49e | 621 | zfs_userquota_prop_to_obj(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type) |
9babb374 BB |
622 | { |
623 | switch (type) { | |
624 | case ZFS_PROP_USERUSED: | |
1de321e6 | 625 | case ZFS_PROP_USEROBJUSED: |
9babb374 BB |
626 | return (DMU_USERUSED_OBJECT); |
627 | case ZFS_PROP_GROUPUSED: | |
1de321e6 | 628 | case ZFS_PROP_GROUPOBJUSED: |
9babb374 | 629 | return (DMU_GROUPUSED_OBJECT); |
9c5167d1 NF |
630 | case ZFS_PROP_PROJECTUSED: |
631 | case ZFS_PROP_PROJECTOBJUSED: | |
632 | return (DMU_PROJECTUSED_OBJECT); | |
9babb374 | 633 | case ZFS_PROP_USERQUOTA: |
0037b49e | 634 | return (zfsvfs->z_userquota_obj); |
9babb374 | 635 | case ZFS_PROP_GROUPQUOTA: |
0037b49e | 636 | return (zfsvfs->z_groupquota_obj); |
1de321e6 | 637 | case ZFS_PROP_USEROBJQUOTA: |
0037b49e | 638 | return (zfsvfs->z_userobjquota_obj); |
1de321e6 | 639 | case ZFS_PROP_GROUPOBJQUOTA: |
0037b49e | 640 | return (zfsvfs->z_groupobjquota_obj); |
9c5167d1 NF |
641 | case ZFS_PROP_PROJECTQUOTA: |
642 | return (zfsvfs->z_projectquota_obj); | |
643 | case ZFS_PROP_PROJECTOBJQUOTA: | |
644 | return (zfsvfs->z_projectobjquota_obj); | |
149e873a | 645 | default: |
1de321e6 | 646 | return (ZFS_NO_OBJECT); |
9babb374 | 647 | } |
9babb374 BB |
648 | } |
649 | ||
650 | int | |
0037b49e | 651 | zfs_userspace_many(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type, |
9babb374 BB |
652 | uint64_t *cookiep, void *vbuf, uint64_t *bufsizep) |
653 | { | |
654 | int error; | |
655 | zap_cursor_t zc; | |
656 | zap_attribute_t za; | |
657 | zfs_useracct_t *buf = vbuf; | |
658 | uint64_t obj; | |
1de321e6 | 659 | int offset = 0; |
9babb374 | 660 | |
0037b49e | 661 | if (!dmu_objset_userspace_present(zfsvfs->z_os)) |
2e528b49 | 662 | return (SET_ERROR(ENOTSUP)); |
9babb374 | 663 | |
9c5167d1 NF |
664 | if ((type == ZFS_PROP_PROJECTQUOTA || type == ZFS_PROP_PROJECTUSED || |
665 | type == ZFS_PROP_PROJECTOBJQUOTA || | |
666 | type == ZFS_PROP_PROJECTOBJUSED) && | |
667 | !dmu_objset_projectquota_present(zfsvfs->z_os)) | |
668 | return (SET_ERROR(ENOTSUP)); | |
669 | ||
1de321e6 | 670 | if ((type == ZFS_PROP_USEROBJUSED || type == ZFS_PROP_GROUPOBJUSED || |
9c5167d1 NF |
671 | type == ZFS_PROP_USEROBJQUOTA || type == ZFS_PROP_GROUPOBJQUOTA || |
672 | type == ZFS_PROP_PROJECTOBJUSED || | |
673 | type == ZFS_PROP_PROJECTOBJQUOTA) && | |
0037b49e | 674 | !dmu_objset_userobjspace_present(zfsvfs->z_os)) |
1de321e6 JX |
675 | return (SET_ERROR(ENOTSUP)); |
676 | ||
0037b49e | 677 | obj = zfs_userquota_prop_to_obj(zfsvfs, type); |
1de321e6 | 678 | if (obj == ZFS_NO_OBJECT) { |
9babb374 BB |
679 | *bufsizep = 0; |
680 | return (0); | |
681 | } | |
682 | ||
9c5167d1 NF |
683 | if (type == ZFS_PROP_USEROBJUSED || type == ZFS_PROP_GROUPOBJUSED || |
684 | type == ZFS_PROP_PROJECTOBJUSED) | |
1de321e6 JX |
685 | offset = DMU_OBJACCT_PREFIX_LEN; |
686 | ||
0037b49e | 687 | for (zap_cursor_init_serialized(&zc, zfsvfs->z_os, obj, *cookiep); |
9babb374 BB |
688 | (error = zap_cursor_retrieve(&zc, &za)) == 0; |
689 | zap_cursor_advance(&zc)) { | |
690 | if ((uintptr_t)buf - (uintptr_t)vbuf + sizeof (zfs_useracct_t) > | |
691 | *bufsizep) | |
692 | break; | |
693 | ||
1de321e6 JX |
694 | /* |
695 | * skip object quota (with zap name prefix DMU_OBJACCT_PREFIX) | |
696 | * when dealing with block quota and vice versa. | |
697 | */ | |
698 | if ((offset > 0) != (strncmp(za.za_name, DMU_OBJACCT_PREFIX, | |
699 | DMU_OBJACCT_PREFIX_LEN) == 0)) | |
700 | continue; | |
701 | ||
0037b49e | 702 | fuidstr_to_sid(zfsvfs, za.za_name + offset, |
9babb374 BB |
703 | buf->zu_domain, sizeof (buf->zu_domain), &buf->zu_rid); |
704 | ||
705 | buf->zu_space = za.za_first_integer; | |
706 | buf++; | |
707 | } | |
708 | if (error == ENOENT) | |
709 | error = 0; | |
710 | ||
711 | ASSERT3U((uintptr_t)buf - (uintptr_t)vbuf, <=, *bufsizep); | |
712 | *bufsizep = (uintptr_t)buf - (uintptr_t)vbuf; | |
713 | *cookiep = zap_cursor_serialize(&zc); | |
714 | zap_cursor_fini(&zc); | |
715 | return (error); | |
716 | } | |
717 | ||
718 | /* | |
719 | * buf must be big enough (eg, 32 bytes) | |
720 | */ | |
721 | static int | |
0037b49e | 722 | id_to_fuidstr(zfsvfs_t *zfsvfs, const char *domain, uid_t rid, |
9babb374 BB |
723 | char *buf, boolean_t addok) |
724 | { | |
725 | uint64_t fuid; | |
726 | int domainid = 0; | |
727 | ||
728 | if (domain && domain[0]) { | |
0037b49e | 729 | domainid = zfs_fuid_find_by_domain(zfsvfs, domain, NULL, addok); |
9babb374 | 730 | if (domainid == -1) |
2e528b49 | 731 | return (SET_ERROR(ENOENT)); |
9babb374 BB |
732 | } |
733 | fuid = FUID_ENCODE(domainid, rid); | |
734 | (void) sprintf(buf, "%llx", (longlong_t)fuid); | |
735 | return (0); | |
736 | } | |
737 | ||
738 | int | |
0037b49e | 739 | zfs_userspace_one(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type, |
9babb374 BB |
740 | const char *domain, uint64_t rid, uint64_t *valp) |
741 | { | |
1de321e6 JX |
742 | char buf[20 + DMU_OBJACCT_PREFIX_LEN]; |
743 | int offset = 0; | |
9babb374 BB |
744 | int err; |
745 | uint64_t obj; | |
746 | ||
747 | *valp = 0; | |
748 | ||
0037b49e | 749 | if (!dmu_objset_userspace_present(zfsvfs->z_os)) |
2e528b49 | 750 | return (SET_ERROR(ENOTSUP)); |
9babb374 | 751 | |
1de321e6 | 752 | if ((type == ZFS_PROP_USEROBJUSED || type == ZFS_PROP_GROUPOBJUSED || |
9c5167d1 NF |
753 | type == ZFS_PROP_USEROBJQUOTA || type == ZFS_PROP_GROUPOBJQUOTA || |
754 | type == ZFS_PROP_PROJECTOBJUSED || | |
755 | type == ZFS_PROP_PROJECTOBJQUOTA) && | |
0037b49e | 756 | !dmu_objset_userobjspace_present(zfsvfs->z_os)) |
1de321e6 JX |
757 | return (SET_ERROR(ENOTSUP)); |
758 | ||
9c5167d1 NF |
759 | if (type == ZFS_PROP_PROJECTQUOTA || type == ZFS_PROP_PROJECTUSED || |
760 | type == ZFS_PROP_PROJECTOBJQUOTA || | |
761 | type == ZFS_PROP_PROJECTOBJUSED) { | |
762 | if (!dmu_objset_projectquota_present(zfsvfs->z_os)) | |
763 | return (SET_ERROR(ENOTSUP)); | |
764 | if (!zpl_is_valid_projid(rid)) | |
765 | return (SET_ERROR(EINVAL)); | |
766 | } | |
767 | ||
0037b49e | 768 | obj = zfs_userquota_prop_to_obj(zfsvfs, type); |
1de321e6 | 769 | if (obj == ZFS_NO_OBJECT) |
9babb374 BB |
770 | return (0); |
771 | ||
9c5167d1 NF |
772 | if (type == ZFS_PROP_USEROBJUSED || type == ZFS_PROP_GROUPOBJUSED || |
773 | type == ZFS_PROP_PROJECTOBJUSED) { | |
ed15d544 | 774 | strlcpy(buf, DMU_OBJACCT_PREFIX, DMU_OBJACCT_PREFIX_LEN + 1); |
1de321e6 JX |
775 | offset = DMU_OBJACCT_PREFIX_LEN; |
776 | } | |
777 | ||
0037b49e | 778 | err = id_to_fuidstr(zfsvfs, domain, rid, buf + offset, B_FALSE); |
9babb374 BB |
779 | if (err) |
780 | return (err); | |
781 | ||
0037b49e | 782 | err = zap_lookup(zfsvfs->z_os, obj, buf, 8, 1, valp); |
9babb374 BB |
783 | if (err == ENOENT) |
784 | err = 0; | |
785 | return (err); | |
786 | } | |
787 | ||
788 | int | |
0037b49e | 789 | zfs_set_userquota(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type, |
9babb374 BB |
790 | const char *domain, uint64_t rid, uint64_t quota) |
791 | { | |
792 | char buf[32]; | |
793 | int err; | |
794 | dmu_tx_t *tx; | |
795 | uint64_t *objp; | |
796 | boolean_t fuid_dirtied; | |
797 | ||
0037b49e | 798 | if (zfsvfs->z_version < ZPL_VERSION_USERSPACE) |
2e528b49 | 799 | return (SET_ERROR(ENOTSUP)); |
9babb374 | 800 | |
1de321e6 JX |
801 | switch (type) { |
802 | case ZFS_PROP_USERQUOTA: | |
0037b49e | 803 | objp = &zfsvfs->z_userquota_obj; |
1de321e6 JX |
804 | break; |
805 | case ZFS_PROP_GROUPQUOTA: | |
0037b49e | 806 | objp = &zfsvfs->z_groupquota_obj; |
1de321e6 JX |
807 | break; |
808 | case ZFS_PROP_USEROBJQUOTA: | |
0037b49e | 809 | objp = &zfsvfs->z_userobjquota_obj; |
1de321e6 JX |
810 | break; |
811 | case ZFS_PROP_GROUPOBJQUOTA: | |
0037b49e | 812 | objp = &zfsvfs->z_groupobjquota_obj; |
1de321e6 | 813 | break; |
9c5167d1 NF |
814 | case ZFS_PROP_PROJECTQUOTA: |
815 | if (!dmu_objset_projectquota_enabled(zfsvfs->z_os)) | |
816 | return (SET_ERROR(ENOTSUP)); | |
817 | if (!zpl_is_valid_projid(rid)) | |
818 | return (SET_ERROR(EINVAL)); | |
819 | ||
820 | objp = &zfsvfs->z_projectquota_obj; | |
821 | break; | |
822 | case ZFS_PROP_PROJECTOBJQUOTA: | |
823 | if (!dmu_objset_projectquota_enabled(zfsvfs->z_os)) | |
824 | return (SET_ERROR(ENOTSUP)); | |
825 | if (!zpl_is_valid_projid(rid)) | |
826 | return (SET_ERROR(EINVAL)); | |
827 | ||
828 | objp = &zfsvfs->z_projectobjquota_obj; | |
829 | break; | |
1de321e6 JX |
830 | default: |
831 | return (SET_ERROR(EINVAL)); | |
832 | } | |
9babb374 | 833 | |
0037b49e | 834 | err = id_to_fuidstr(zfsvfs, domain, rid, buf, B_TRUE); |
9babb374 BB |
835 | if (err) |
836 | return (err); | |
0037b49e | 837 | fuid_dirtied = zfsvfs->z_fuid_dirty; |
9babb374 | 838 | |
0037b49e | 839 | tx = dmu_tx_create(zfsvfs->z_os); |
9babb374 BB |
840 | dmu_tx_hold_zap(tx, *objp ? *objp : DMU_NEW_OBJECT, B_TRUE, NULL); |
841 | if (*objp == 0) { | |
842 | dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, B_TRUE, | |
843 | zfs_userquota_prop_prefixes[type]); | |
844 | } | |
845 | if (fuid_dirtied) | |
0037b49e | 846 | zfs_fuid_txhold(zfsvfs, tx); |
9babb374 BB |
847 | err = dmu_tx_assign(tx, TXG_WAIT); |
848 | if (err) { | |
849 | dmu_tx_abort(tx); | |
850 | return (err); | |
851 | } | |
852 | ||
0037b49e | 853 | mutex_enter(&zfsvfs->z_lock); |
9babb374 | 854 | if (*objp == 0) { |
0037b49e | 855 | *objp = zap_create(zfsvfs->z_os, DMU_OT_USERGROUP_QUOTA, |
9babb374 | 856 | DMU_OT_NONE, 0, tx); |
0037b49e | 857 | VERIFY(0 == zap_add(zfsvfs->z_os, MASTER_NODE_OBJ, |
9babb374 BB |
858 | zfs_userquota_prop_prefixes[type], 8, 1, objp, tx)); |
859 | } | |
0037b49e | 860 | mutex_exit(&zfsvfs->z_lock); |
9babb374 BB |
861 | |
862 | if (quota == 0) { | |
0037b49e | 863 | err = zap_remove(zfsvfs->z_os, *objp, buf, tx); |
9babb374 BB |
864 | if (err == ENOENT) |
865 | err = 0; | |
866 | } else { | |
0037b49e | 867 | err = zap_update(zfsvfs->z_os, *objp, buf, 8, 1, "a, tx); |
9babb374 BB |
868 | } |
869 | ASSERT(err == 0); | |
870 | if (fuid_dirtied) | |
0037b49e | 871 | zfs_fuid_sync(zfsvfs, tx); |
9babb374 BB |
872 | dmu_tx_commit(tx); |
873 | return (err); | |
874 | } | |
875 | ||
1de321e6 | 876 | boolean_t |
9c5167d1 | 877 | zfs_id_overobjquota(zfsvfs_t *zfsvfs, uint64_t usedobj, uint64_t id) |
1de321e6 JX |
878 | { |
879 | char buf[20 + DMU_OBJACCT_PREFIX_LEN]; | |
9c5167d1 | 880 | uint64_t used, quota, quotaobj; |
1de321e6 JX |
881 | int err; |
882 | ||
0037b49e | 883 | if (!dmu_objset_userobjspace_present(zfsvfs->z_os)) { |
c0daec32 AB |
884 | if (dmu_objset_userobjspace_upgradable(zfsvfs->z_os)) { |
885 | dsl_pool_config_enter( | |
886 | dmu_objset_pool(zfsvfs->z_os), FTAG); | |
9c5167d1 | 887 | dmu_objset_id_quota_upgrade(zfsvfs->z_os); |
c0daec32 AB |
888 | dsl_pool_config_exit( |
889 | dmu_objset_pool(zfsvfs->z_os), FTAG); | |
890 | } | |
1de321e6 JX |
891 | return (B_FALSE); |
892 | } | |
893 | ||
9c5167d1 NF |
894 | if (usedobj == DMU_PROJECTUSED_OBJECT) { |
895 | if (!dmu_objset_projectquota_present(zfsvfs->z_os)) { | |
896 | if (dmu_objset_projectquota_upgradable(zfsvfs->z_os)) { | |
897 | dsl_pool_config_enter( | |
898 | dmu_objset_pool(zfsvfs->z_os), FTAG); | |
899 | dmu_objset_id_quota_upgrade(zfsvfs->z_os); | |
900 | dsl_pool_config_exit( | |
901 | dmu_objset_pool(zfsvfs->z_os), FTAG); | |
902 | } | |
903 | return (B_FALSE); | |
904 | } | |
905 | quotaobj = zfsvfs->z_projectobjquota_obj; | |
906 | } else if (usedobj == DMU_USERUSED_OBJECT) { | |
907 | quotaobj = zfsvfs->z_userobjquota_obj; | |
908 | } else if (usedobj == DMU_GROUPUSED_OBJECT) { | |
909 | quotaobj = zfsvfs->z_groupobjquota_obj; | |
910 | } else { | |
911 | return (B_FALSE); | |
912 | } | |
0037b49e | 913 | if (quotaobj == 0 || zfsvfs->z_replay) |
1de321e6 JX |
914 | return (B_FALSE); |
915 | ||
9c5167d1 | 916 | (void) sprintf(buf, "%llx", (longlong_t)id); |
0037b49e | 917 | err = zap_lookup(zfsvfs->z_os, quotaobj, buf, 8, 1, "a); |
1de321e6 JX |
918 | if (err != 0) |
919 | return (B_FALSE); | |
920 | ||
9c5167d1 | 921 | (void) sprintf(buf, DMU_OBJACCT_PREFIX "%llx", (longlong_t)id); |
0037b49e | 922 | err = zap_lookup(zfsvfs->z_os, usedobj, buf, 8, 1, &used); |
1de321e6 JX |
923 | if (err != 0) |
924 | return (B_FALSE); | |
925 | return (used >= quota); | |
926 | } | |
927 | ||
9babb374 | 928 | boolean_t |
9c5167d1 | 929 | zfs_id_overblockquota(zfsvfs_t *zfsvfs, uint64_t usedobj, uint64_t id) |
9babb374 | 930 | { |
1de321e6 | 931 | char buf[20]; |
9c5167d1 | 932 | uint64_t used, quota, quotaobj; |
9babb374 BB |
933 | int err; |
934 | ||
9c5167d1 NF |
935 | if (usedobj == DMU_PROJECTUSED_OBJECT) { |
936 | if (!dmu_objset_projectquota_present(zfsvfs->z_os)) { | |
937 | if (dmu_objset_projectquota_upgradable(zfsvfs->z_os)) { | |
938 | dsl_pool_config_enter( | |
939 | dmu_objset_pool(zfsvfs->z_os), FTAG); | |
940 | dmu_objset_id_quota_upgrade(zfsvfs->z_os); | |
941 | dsl_pool_config_exit( | |
942 | dmu_objset_pool(zfsvfs->z_os), FTAG); | |
943 | } | |
944 | return (B_FALSE); | |
945 | } | |
946 | quotaobj = zfsvfs->z_projectquota_obj; | |
947 | } else if (usedobj == DMU_USERUSED_OBJECT) { | |
948 | quotaobj = zfsvfs->z_userquota_obj; | |
949 | } else if (usedobj == DMU_GROUPUSED_OBJECT) { | |
950 | quotaobj = zfsvfs->z_groupquota_obj; | |
951 | } else { | |
952 | return (B_FALSE); | |
953 | } | |
0037b49e | 954 | if (quotaobj == 0 || zfsvfs->z_replay) |
9babb374 BB |
955 | return (B_FALSE); |
956 | ||
9c5167d1 | 957 | (void) sprintf(buf, "%llx", (longlong_t)id); |
0037b49e | 958 | err = zap_lookup(zfsvfs->z_os, quotaobj, buf, 8, 1, "a); |
9babb374 BB |
959 | if (err != 0) |
960 | return (B_FALSE); | |
961 | ||
0037b49e | 962 | err = zap_lookup(zfsvfs->z_os, usedobj, buf, 8, 1, &used); |
9babb374 BB |
963 | if (err != 0) |
964 | return (B_FALSE); | |
965 | return (used >= quota); | |
966 | } | |
967 | ||
428870ff | 968 | boolean_t |
9c5167d1 | 969 | zfs_id_overquota(zfsvfs_t *zfsvfs, uint64_t usedobj, uint64_t id) |
428870ff | 970 | { |
9c5167d1 NF |
971 | return (zfs_id_overblockquota(zfsvfs, usedobj, id) || |
972 | zfs_id_overobjquota(zfsvfs, usedobj, id)); | |
428870ff BB |
973 | } |
974 | ||
8614ddf9 MA |
975 | /* |
976 | * Associate this zfsvfs with the given objset, which must be owned. | |
977 | * This will cache a bunch of on-disk state from the objset in the | |
978 | * zfsvfs. | |
979 | */ | |
980 | static int | |
981 | zfsvfs_init(zfsvfs_t *zfsvfs, objset_t *os) | |
9babb374 | 982 | { |
8614ddf9 MA |
983 | int error; |
984 | uint64_t val; | |
0282c413 | 985 | |
0037b49e BB |
986 | zfsvfs->z_max_blksz = SPA_OLD_MAXBLOCKSIZE; |
987 | zfsvfs->z_show_ctldir = ZFS_SNAPDIR_VISIBLE; | |
988 | zfsvfs->z_os = os; | |
9babb374 | 989 | |
0037b49e | 990 | error = zfs_get_zplprop(os, ZFS_PROP_VERSION, &zfsvfs->z_version); |
8614ddf9 MA |
991 | if (error != 0) |
992 | return (error); | |
993 | if (zfsvfs->z_version > | |
994 | zfs_zpl_version_map(spa_version(dmu_objset_spa(os)))) { | |
995 | (void) printk("Can't mount a version %lld file system " | |
996 | "on a version %lld pool\n. Pool must be upgraded to mount " | |
997 | "this file system.", (u_longlong_t)zfsvfs->z_version, | |
998 | (u_longlong_t)spa_version(dmu_objset_spa(os))); | |
999 | return (SET_ERROR(ENOTSUP)); | |
9babb374 | 1000 | } |
8614ddf9 MA |
1001 | error = zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &val); |
1002 | if (error != 0) | |
1003 | return (error); | |
1004 | zfsvfs->z_norm = (int)val; | |
9babb374 | 1005 | |
8614ddf9 MA |
1006 | error = zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &val); |
1007 | if (error != 0) | |
1008 | return (error); | |
1009 | zfsvfs->z_utf8 = (val != 0); | |
9babb374 | 1010 | |
8614ddf9 MA |
1011 | error = zfs_get_zplprop(os, ZFS_PROP_CASE, &val); |
1012 | if (error != 0) | |
1013 | return (error); | |
1014 | zfsvfs->z_case = (uint_t)val; | |
9babb374 | 1015 | |
8614ddf9 MA |
1016 | if ((error = zfs_get_zplprop(os, ZFS_PROP_ACLTYPE, &val)) != 0) |
1017 | return (error); | |
1018 | zfsvfs->z_acl_type = (uint_t)val; | |
023699cd | 1019 | |
9babb374 BB |
1020 | /* |
1021 | * Fold case on file systems that are always or sometimes case | |
1022 | * insensitive. | |
1023 | */ | |
0037b49e BB |
1024 | if (zfsvfs->z_case == ZFS_CASE_INSENSITIVE || |
1025 | zfsvfs->z_case == ZFS_CASE_MIXED) | |
1026 | zfsvfs->z_norm |= U8_TEXTPREP_TOUPPER; | |
9babb374 | 1027 | |
0037b49e BB |
1028 | zfsvfs->z_use_fuids = USE_FUIDS(zfsvfs->z_version, zfsvfs->z_os); |
1029 | zfsvfs->z_use_sa = USE_SA(zfsvfs->z_version, zfsvfs->z_os); | |
428870ff | 1030 | |
8614ddf9 | 1031 | uint64_t sa_obj = 0; |
0037b49e | 1032 | if (zfsvfs->z_use_sa) { |
428870ff BB |
1033 | /* should either have both of these objects or none */ |
1034 | error = zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS, 8, 1, | |
1035 | &sa_obj); | |
8614ddf9 MA |
1036 | if (error != 0) |
1037 | return (error); | |
82a37189 | 1038 | |
8614ddf9 MA |
1039 | error = zfs_get_zplprop(os, ZFS_PROP_XATTR, &val); |
1040 | if ((error == 0) && (val == ZFS_XATTR_SA)) | |
0037b49e | 1041 | zfsvfs->z_xattr_sa = B_TRUE; |
428870ff BB |
1042 | } |
1043 | ||
572e2857 | 1044 | error = sa_setup(os, sa_obj, zfs_attr_table, ZPL_END, |
0037b49e | 1045 | &zfsvfs->z_attr_table); |
8614ddf9 MA |
1046 | if (error != 0) |
1047 | return (error); | |
428870ff | 1048 | |
0037b49e | 1049 | if (zfsvfs->z_version >= ZPL_VERSION_SA) |
428870ff | 1050 | sa_register_update_callback(os, zfs_sa_upgrade); |
9babb374 BB |
1051 | |
1052 | error = zap_lookup(os, MASTER_NODE_OBJ, ZFS_ROOT_OBJ, 8, 1, | |
0037b49e | 1053 | &zfsvfs->z_root); |
8614ddf9 MA |
1054 | if (error != 0) |
1055 | return (error); | |
0037b49e | 1056 | ASSERT(zfsvfs->z_root != 0); |
9babb374 BB |
1057 | |
1058 | error = zap_lookup(os, MASTER_NODE_OBJ, ZFS_UNLINKED_SET, 8, 1, | |
0037b49e | 1059 | &zfsvfs->z_unlinkedobj); |
8614ddf9 MA |
1060 | if (error != 0) |
1061 | return (error); | |
9babb374 BB |
1062 | |
1063 | error = zap_lookup(os, MASTER_NODE_OBJ, | |
1064 | zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA], | |
0037b49e | 1065 | 8, 1, &zfsvfs->z_userquota_obj); |
8614ddf9 MA |
1066 | if (error == ENOENT) |
1067 | zfsvfs->z_userquota_obj = 0; | |
1068 | else if (error != 0) | |
1069 | return (error); | |
9babb374 BB |
1070 | |
1071 | error = zap_lookup(os, MASTER_NODE_OBJ, | |
1072 | zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA], | |
0037b49e | 1073 | 8, 1, &zfsvfs->z_groupquota_obj); |
8614ddf9 MA |
1074 | if (error == ENOENT) |
1075 | zfsvfs->z_groupquota_obj = 0; | |
1076 | else if (error != 0) | |
1077 | return (error); | |
9babb374 | 1078 | |
9c5167d1 NF |
1079 | error = zap_lookup(os, MASTER_NODE_OBJ, |
1080 | zfs_userquota_prop_prefixes[ZFS_PROP_PROJECTQUOTA], | |
1081 | 8, 1, &zfsvfs->z_projectquota_obj); | |
1082 | if (error == ENOENT) | |
1083 | zfsvfs->z_projectquota_obj = 0; | |
1084 | else if (error != 0) | |
1085 | return (error); | |
1086 | ||
1de321e6 JX |
1087 | error = zap_lookup(os, MASTER_NODE_OBJ, |
1088 | zfs_userquota_prop_prefixes[ZFS_PROP_USEROBJQUOTA], | |
0037b49e | 1089 | 8, 1, &zfsvfs->z_userobjquota_obj); |
8614ddf9 MA |
1090 | if (error == ENOENT) |
1091 | zfsvfs->z_userobjquota_obj = 0; | |
1092 | else if (error != 0) | |
1093 | return (error); | |
1de321e6 JX |
1094 | |
1095 | error = zap_lookup(os, MASTER_NODE_OBJ, | |
1096 | zfs_userquota_prop_prefixes[ZFS_PROP_GROUPOBJQUOTA], | |
0037b49e | 1097 | 8, 1, &zfsvfs->z_groupobjquota_obj); |
8614ddf9 MA |
1098 | if (error == ENOENT) |
1099 | zfsvfs->z_groupobjquota_obj = 0; | |
1100 | else if (error != 0) | |
1101 | return (error); | |
1de321e6 | 1102 | |
9c5167d1 NF |
1103 | error = zap_lookup(os, MASTER_NODE_OBJ, |
1104 | zfs_userquota_prop_prefixes[ZFS_PROP_PROJECTOBJQUOTA], | |
1105 | 8, 1, &zfsvfs->z_projectobjquota_obj); | |
1106 | if (error == ENOENT) | |
1107 | zfsvfs->z_projectobjquota_obj = 0; | |
1108 | else if (error != 0) | |
1109 | return (error); | |
1110 | ||
9babb374 | 1111 | error = zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES, 8, 1, |
0037b49e | 1112 | &zfsvfs->z_fuid_obj); |
8614ddf9 MA |
1113 | if (error == ENOENT) |
1114 | zfsvfs->z_fuid_obj = 0; | |
1115 | else if (error != 0) | |
1116 | return (error); | |
9babb374 BB |
1117 | |
1118 | error = zap_lookup(os, MASTER_NODE_OBJ, ZFS_SHARES_DIR, 8, 1, | |
0037b49e | 1119 | &zfsvfs->z_shares_dir); |
8614ddf9 MA |
1120 | if (error == ENOENT) |
1121 | zfsvfs->z_shares_dir = 0; | |
1122 | else if (error != 0) | |
1123 | return (error); | |
1124 | ||
1125 | return (0); | |
1126 | } | |
1127 | ||
1128 | int | |
163a8c28 | 1129 | zfsvfs_create(const char *osname, boolean_t readonly, zfsvfs_t **zfvp) |
8614ddf9 MA |
1130 | { |
1131 | objset_t *os; | |
1132 | zfsvfs_t *zfsvfs; | |
1133 | int error; | |
163a8c28 | 1134 | boolean_t ro = (readonly || (strchr(osname, '@') != NULL)); |
8614ddf9 MA |
1135 | |
1136 | zfsvfs = kmem_zalloc(sizeof (zfsvfs_t), KM_SLEEP); | |
1137 | ||
163a8c28 | 1138 | error = dmu_objset_own(osname, DMU_OST_ZFS, ro, B_TRUE, zfsvfs, &os); |
d99a0153 | 1139 | if (error != 0) { |
8614ddf9 MA |
1140 | kmem_free(zfsvfs, sizeof (zfsvfs_t)); |
1141 | return (error); | |
1142 | } | |
1143 | ||
d99a0153 CW |
1144 | error = zfsvfs_create_impl(zfvp, zfsvfs, os); |
1145 | if (error != 0) { | |
1146 | dmu_objset_disown(os, B_TRUE, zfsvfs); | |
1147 | } | |
1148 | return (error); | |
1149 | } | |
1150 | ||
1151 | int | |
1152 | zfsvfs_create_impl(zfsvfs_t **zfvp, zfsvfs_t *zfsvfs, objset_t *os) | |
1153 | { | |
1154 | int error; | |
1155 | ||
8614ddf9 MA |
1156 | zfsvfs->z_vfs = NULL; |
1157 | zfsvfs->z_sb = NULL; | |
1158 | zfsvfs->z_parent = zfsvfs; | |
9babb374 | 1159 | |
0037b49e BB |
1160 | mutex_init(&zfsvfs->z_znodes_lock, NULL, MUTEX_DEFAULT, NULL); |
1161 | mutex_init(&zfsvfs->z_lock, NULL, MUTEX_DEFAULT, NULL); | |
1162 | list_create(&zfsvfs->z_all_znodes, sizeof (znode_t), | |
9babb374 | 1163 | offsetof(znode_t, z_link_node)); |
0037b49e BB |
1164 | rrm_init(&zfsvfs->z_teardown_lock, B_FALSE); |
1165 | rw_init(&zfsvfs->z_teardown_inactive_lock, NULL, RW_DEFAULT, NULL); | |
1166 | rw_init(&zfsvfs->z_fuid_lock, NULL, RW_DEFAULT, NULL); | |
d07b7c7f | 1167 | |
8614ddf9 MA |
1168 | int size = MIN(1 << (highbit64(zfs_object_mutex_size) - 1), |
1169 | ZFS_OBJ_MTX_MAX); | |
0037b49e BB |
1170 | zfsvfs->z_hold_size = size; |
1171 | zfsvfs->z_hold_trees = vmem_zalloc(sizeof (avl_tree_t) * size, | |
1172 | KM_SLEEP); | |
1173 | zfsvfs->z_hold_locks = vmem_zalloc(sizeof (kmutex_t) * size, KM_SLEEP); | |
8614ddf9 | 1174 | for (int i = 0; i != size; i++) { |
0037b49e | 1175 | avl_create(&zfsvfs->z_hold_trees[i], zfs_znode_hold_compare, |
c96c36fa | 1176 | sizeof (znode_hold_t), offsetof(znode_hold_t, zh_node)); |
0037b49e | 1177 | mutex_init(&zfsvfs->z_hold_locks[i], NULL, MUTEX_DEFAULT, NULL); |
c96c36fa | 1178 | } |
9babb374 | 1179 | |
8614ddf9 MA |
1180 | error = zfsvfs_init(zfsvfs, os); |
1181 | if (error != 0) { | |
8614ddf9 MA |
1182 | *zfvp = NULL; |
1183 | kmem_free(zfsvfs, sizeof (zfsvfs_t)); | |
1184 | return (error); | |
1185 | } | |
1186 | ||
0037b49e | 1187 | *zfvp = zfsvfs; |
9babb374 | 1188 | return (0); |
9babb374 BB |
1189 | } |
1190 | ||
8614ddf9 | 1191 | static int |
f298b24d | 1192 | zfsvfs_setup(zfsvfs_t *zfsvfs, boolean_t mounting) |
34dc7c2f | 1193 | { |
34dc7c2f | 1194 | int error; |
ae76f45c TC |
1195 | boolean_t readonly = zfs_is_readonly(zfsvfs); |
1196 | ||
1c2555ef | 1197 | error = zfs_register_callbacks(zfsvfs->z_vfs); |
34dc7c2f BB |
1198 | if (error) |
1199 | return (error); | |
1200 | ||
0037b49e | 1201 | zfsvfs->z_log = zil_open(zfsvfs->z_os, zfs_get_data); |
9babb374 | 1202 | |
34dc7c2f BB |
1203 | /* |
1204 | * If we are not mounting (ie: online recv), then we don't | |
1205 | * have to worry about replaying the log as we blocked all | |
1206 | * operations out since we closed the ZIL. | |
1207 | */ | |
1208 | if (mounting) { | |
1209 | /* | |
1210 | * During replay we remove the read only flag to | |
1211 | * allow replays to succeed. | |
1212 | */ | |
fb5f0bc8 | 1213 | if (readonly != 0) |
0037b49e | 1214 | readonly_changed_cb(zfsvfs, B_FALSE); |
fb5f0bc8 | 1215 | else |
0037b49e | 1216 | zfs_unlinked_drain(zfsvfs); |
34dc7c2f | 1217 | |
428870ff BB |
1218 | /* |
1219 | * Parse and replay the intent log. | |
1220 | * | |
1221 | * Because of ziltest, this must be done after | |
1222 | * zfs_unlinked_drain(). (Further note: ziltest | |
1223 | * doesn't use readonly mounts, where | |
1224 | * zfs_unlinked_drain() isn't called.) This is because | |
1225 | * ziltest causes spa_sync() to think it's committed, | |
1226 | * but actually it is not, so the intent log contains | |
1227 | * many txg's worth of changes. | |
1228 | * | |
1229 | * In particular, if object N is in the unlinked set in | |
1230 | * the last txg to actually sync, then it could be | |
1231 | * actually freed in a later txg and then reallocated | |
1232 | * in a yet later txg. This would write a "create | |
1233 | * object N" record to the intent log. Normally, this | |
1234 | * would be fine because the spa_sync() would have | |
1235 | * written out the fact that object N is free, before | |
1236 | * we could write the "create object N" intent log | |
1237 | * record. | |
1238 | * | |
1239 | * But when we are in ziltest mode, we advance the "open | |
1240 | * txg" without actually spa_sync()-ing the changes to | |
1241 | * disk. So we would see that object N is still | |
1242 | * allocated and in the unlinked set, and there is an | |
1243 | * intent log record saying to allocate it. | |
1244 | */ | |
0037b49e | 1245 | if (spa_writeable(dmu_objset_spa(zfsvfs->z_os))) { |
572e2857 | 1246 | if (zil_replay_disable) { |
0037b49e | 1247 | zil_destroy(zfsvfs->z_log, B_FALSE); |
572e2857 | 1248 | } else { |
0037b49e BB |
1249 | zfsvfs->z_replay = B_TRUE; |
1250 | zil_replay(zfsvfs->z_os, zfsvfs, | |
572e2857 | 1251 | zfs_replay_vector); |
0037b49e | 1252 | zfsvfs->z_replay = B_FALSE; |
572e2857 | 1253 | } |
fb5f0bc8 | 1254 | } |
2cf7f52b BB |
1255 | |
1256 | /* restore readonly bit */ | |
1257 | if (readonly != 0) | |
0037b49e | 1258 | readonly_changed_cb(zfsvfs, B_TRUE); |
a448a255 SD |
1259 | |
1260 | ASSERT3P(zfsvfs->z_kstat.dk_kstats, ==, NULL); | |
1261 | dataset_kstats_create(&zfsvfs->z_kstat, zfsvfs->z_os); | |
34dc7c2f BB |
1262 | } |
1263 | ||
9775e988 | 1264 | /* |
0037b49e | 1265 | * Set the objset user_ptr to track its zfsvfs. |
9775e988 | 1266 | */ |
0037b49e BB |
1267 | mutex_enter(&zfsvfs->z_os->os_user_ptr_lock); |
1268 | dmu_objset_set_user(zfsvfs->z_os, zfsvfs); | |
1269 | mutex_exit(&zfsvfs->z_os->os_user_ptr_lock); | |
9775e988 | 1270 | |
34dc7c2f BB |
1271 | return (0); |
1272 | } | |
1273 | ||
9babb374 | 1274 | void |
f298b24d | 1275 | zfsvfs_free(zfsvfs_t *zfsvfs) |
34dc7c2f | 1276 | { |
0037b49e | 1277 | int i, size = zfsvfs->z_hold_size; |
9babb374 | 1278 | |
0037b49e | 1279 | zfs_fuid_destroy(zfsvfs); |
9babb374 | 1280 | |
0037b49e BB |
1281 | mutex_destroy(&zfsvfs->z_znodes_lock); |
1282 | mutex_destroy(&zfsvfs->z_lock); | |
1283 | list_destroy(&zfsvfs->z_all_znodes); | |
1284 | rrm_destroy(&zfsvfs->z_teardown_lock); | |
1285 | rw_destroy(&zfsvfs->z_teardown_inactive_lock); | |
1286 | rw_destroy(&zfsvfs->z_fuid_lock); | |
c96c36fa | 1287 | for (i = 0; i != size; i++) { |
0037b49e BB |
1288 | avl_destroy(&zfsvfs->z_hold_trees[i]); |
1289 | mutex_destroy(&zfsvfs->z_hold_locks[i]); | |
c96c36fa | 1290 | } |
0037b49e BB |
1291 | vmem_free(zfsvfs->z_hold_trees, sizeof (avl_tree_t) * size); |
1292 | vmem_free(zfsvfs->z_hold_locks, sizeof (kmutex_t) * size); | |
1c2555ef | 1293 | zfsvfs_vfs_free(zfsvfs->z_vfs); |
a448a255 | 1294 | dataset_kstats_destroy(&zfsvfs->z_kstat); |
0037b49e | 1295 | kmem_free(zfsvfs, sizeof (zfsvfs_t)); |
34dc7c2f BB |
1296 | } |
1297 | ||
9babb374 | 1298 | static void |
0037b49e | 1299 | zfs_set_fuid_feature(zfsvfs_t *zfsvfs) |
9babb374 | 1300 | { |
0037b49e BB |
1301 | zfsvfs->z_use_fuids = USE_FUIDS(zfsvfs->z_version, zfsvfs->z_os); |
1302 | zfsvfs->z_use_sa = USE_SA(zfsvfs->z_version, zfsvfs->z_os); | |
9babb374 | 1303 | } |
34dc7c2f BB |
1304 | |
1305 | void | |
0037b49e | 1306 | zfs_unregister_callbacks(zfsvfs_t *zfsvfs) |
34dc7c2f | 1307 | { |
0037b49e | 1308 | objset_t *os = zfsvfs->z_os; |
34dc7c2f | 1309 | |
0eb21616 | 1310 | if (!dmu_objset_is_snapshot(os)) |
0037b49e | 1311 | dsl_prop_unregister_all(dmu_objset_ds(os), zfsvfs); |
34dc7c2f BB |
1312 | } |
1313 | ||
bc3e15e3 | 1314 | #ifdef HAVE_MLSLABEL |
428870ff | 1315 | /* |
d3cc8b15 WA |
1316 | * Check that the hex label string is appropriate for the dataset being |
1317 | * mounted into the global_zone proper. | |
428870ff | 1318 | * |
d3cc8b15 WA |
1319 | * Return an error if the hex label string is not default or |
1320 | * admin_low/admin_high. For admin_low labels, the corresponding | |
1321 | * dataset must be readonly. | |
428870ff BB |
1322 | */ |
1323 | int | |
1324 | zfs_check_global_label(const char *dsname, const char *hexsl) | |
1325 | { | |
1326 | if (strcasecmp(hexsl, ZFS_MLSLABEL_DEFAULT) == 0) | |
1327 | return (0); | |
1328 | if (strcasecmp(hexsl, ADMIN_HIGH) == 0) | |
1329 | return (0); | |
1330 | if (strcasecmp(hexsl, ADMIN_LOW) == 0) { | |
1331 | /* must be readonly */ | |
1332 | uint64_t rdonly; | |
1333 | ||
1334 | if (dsl_prop_get_integer(dsname, | |
1335 | zfs_prop_to_name(ZFS_PROP_READONLY), &rdonly, NULL)) | |
2e528b49 | 1336 | return (SET_ERROR(EACCES)); |
428870ff BB |
1337 | return (rdonly ? 0 : EACCES); |
1338 | } | |
2e528b49 | 1339 | return (SET_ERROR(EACCES)); |
428870ff | 1340 | } |
bc3e15e3 | 1341 | #endif /* HAVE_MLSLABEL */ |
428870ff | 1342 | |
9c5167d1 NF |
1343 | static int |
1344 | zfs_statfs_project(zfsvfs_t *zfsvfs, znode_t *zp, struct kstatfs *statp, | |
1345 | uint32_t bshift) | |
1346 | { | |
1347 | char buf[20 + DMU_OBJACCT_PREFIX_LEN]; | |
1348 | uint64_t offset = DMU_OBJACCT_PREFIX_LEN; | |
1349 | uint64_t quota; | |
1350 | uint64_t used; | |
1351 | int err; | |
1352 | ||
1353 | strlcpy(buf, DMU_OBJACCT_PREFIX, DMU_OBJACCT_PREFIX_LEN + 1); | |
1354 | err = id_to_fuidstr(zfsvfs, NULL, zp->z_projid, buf + offset, B_FALSE); | |
1355 | if (err) | |
1356 | return (err); | |
1357 | ||
1358 | if (zfsvfs->z_projectquota_obj == 0) | |
1359 | goto objs; | |
1360 | ||
1361 | err = zap_lookup(zfsvfs->z_os, zfsvfs->z_projectquota_obj, | |
1362 | buf + offset, 8, 1, "a); | |
1363 | if (err == ENOENT) | |
1364 | goto objs; | |
1365 | else if (err) | |
1366 | return (err); | |
1367 | ||
1368 | err = zap_lookup(zfsvfs->z_os, DMU_PROJECTUSED_OBJECT, | |
1369 | buf + offset, 8, 1, &used); | |
1370 | if (unlikely(err == ENOENT)) { | |
1371 | uint32_t blksize; | |
1372 | u_longlong_t nblocks; | |
1373 | ||
1374 | /* | |
1375 | * Quota accounting is async, so it is possible race case. | |
1376 | * There is at least one object with the given project ID. | |
1377 | */ | |
1378 | sa_object_size(zp->z_sa_hdl, &blksize, &nblocks); | |
1379 | if (unlikely(zp->z_blksz == 0)) | |
1380 | blksize = zfsvfs->z_max_blksz; | |
1381 | ||
1382 | used = blksize * nblocks; | |
1383 | } else if (err) { | |
1384 | return (err); | |
1385 | } | |
1386 | ||
1387 | statp->f_blocks = quota >> bshift; | |
1388 | statp->f_bfree = (quota > used) ? ((quota - used) >> bshift) : 0; | |
1389 | statp->f_bavail = statp->f_bfree; | |
1390 | ||
1391 | objs: | |
1392 | if (zfsvfs->z_projectobjquota_obj == 0) | |
1393 | return (0); | |
1394 | ||
1395 | err = zap_lookup(zfsvfs->z_os, zfsvfs->z_projectobjquota_obj, | |
1396 | buf + offset, 8, 1, "a); | |
1397 | if (err == ENOENT) | |
1398 | return (0); | |
1399 | else if (err) | |
1400 | return (err); | |
1401 | ||
1402 | err = zap_lookup(zfsvfs->z_os, DMU_PROJECTUSED_OBJECT, | |
1403 | buf, 8, 1, &used); | |
1404 | if (unlikely(err == ENOENT)) { | |
1405 | /* | |
1406 | * Quota accounting is async, so it is possible race case. | |
1407 | * There is at least one object with the given project ID. | |
1408 | */ | |
1409 | used = 1; | |
1410 | } else if (err) { | |
1411 | return (err); | |
1412 | } | |
1413 | ||
1414 | statp->f_files = quota; | |
1415 | statp->f_ffree = (quota > used) ? (quota - used) : 0; | |
1416 | ||
1417 | return (0); | |
1418 | } | |
1419 | ||
e5c39b95 | 1420 | int |
3558fd73 | 1421 | zfs_statvfs(struct dentry *dentry, struct kstatfs *statp) |
34dc7c2f | 1422 | { |
0037b49e | 1423 | zfsvfs_t *zfsvfs = dentry->d_sb->s_fs_info; |
34dc7c2f | 1424 | uint64_t refdbytes, availbytes, usedobjs, availobjs; |
9c5167d1 | 1425 | int err = 0; |
34dc7c2f | 1426 | |
0037b49e | 1427 | ZFS_ENTER(zfsvfs); |
34dc7c2f | 1428 | |
0037b49e | 1429 | dmu_objset_space(zfsvfs->z_os, |
34dc7c2f BB |
1430 | &refdbytes, &availbytes, &usedobjs, &availobjs); |
1431 | ||
e897a23e | 1432 | uint64_t fsid = dmu_objset_fsid_guid(zfsvfs->z_os); |
34dc7c2f | 1433 | /* |
05ff35c6 BB |
1434 | * The underlying storage pool actually uses multiple block |
1435 | * size. Under Solaris frsize (fragment size) is reported as | |
1436 | * the smallest block size we support, and bsize (block size) | |
1437 | * as the filesystem's maximum block size. Unfortunately, | |
1438 | * under Linux the fragment size and block size are often used | |
1439 | * interchangeably. Thus we are forced to report both of them | |
1440 | * as the filesystem's maximum block size. | |
34dc7c2f | 1441 | */ |
0037b49e BB |
1442 | statp->f_frsize = zfsvfs->z_max_blksz; |
1443 | statp->f_bsize = zfsvfs->z_max_blksz; | |
e897a23e | 1444 | uint32_t bshift = fls(statp->f_bsize) - 1; |
34dc7c2f BB |
1445 | |
1446 | /* | |
3558fd73 BB |
1447 | * The following report "total" blocks of various kinds in |
1448 | * the file system, but reported in terms of f_bsize - the | |
1449 | * "preferred" size. | |
34dc7c2f BB |
1450 | */ |
1451 | ||
3558fd73 BB |
1452 | statp->f_blocks = (refdbytes + availbytes) >> bshift; |
1453 | statp->f_bfree = availbytes >> bshift; | |
34dc7c2f BB |
1454 | statp->f_bavail = statp->f_bfree; /* no root reservation */ |
1455 | ||
1456 | /* | |
1457 | * statvfs() should really be called statufs(), because it assumes | |
1458 | * static metadata. ZFS doesn't preallocate files, so the best | |
1459 | * we can do is report the max that could possibly fit in f_files, | |
1460 | * and that minus the number actually used in f_ffree. | |
e897a23e | 1461 | * For f_ffree, report the smaller of the number of objects available |
34dc7c2f BB |
1462 | * and the number of blocks (each object will take at least a block). |
1463 | */ | |
baab0630 | 1464 | statp->f_ffree = MIN(availobjs, availbytes >> DNODE_SHIFT); |
34dc7c2f | 1465 | statp->f_files = statp->f_ffree + usedobjs; |
04f9432d CP |
1466 | statp->f_fsid.val[0] = (uint32_t)fsid; |
1467 | statp->f_fsid.val[1] = (uint32_t)(fsid >> 32); | |
3558fd73 | 1468 | statp->f_type = ZFS_SUPER_MAGIC; |
eca7b760 | 1469 | statp->f_namelen = MAXNAMELEN - 1; |
34dc7c2f BB |
1470 | |
1471 | /* | |
3558fd73 | 1472 | * We have all of 40 characters to stuff a string here. |
34dc7c2f BB |
1473 | * Is there anything useful we could/should provide? |
1474 | */ | |
3558fd73 | 1475 | bzero(statp->f_spare, sizeof (statp->f_spare)); |
34dc7c2f | 1476 | |
9c5167d1 NF |
1477 | if (dmu_objset_projectquota_enabled(zfsvfs->z_os) && |
1478 | dmu_objset_projectquota_present(zfsvfs->z_os)) { | |
1479 | znode_t *zp = ITOZ(dentry->d_inode); | |
1480 | ||
1481 | if (zp->z_pflags & ZFS_PROJINHERIT && zp->z_projid && | |
1482 | zpl_is_valid_projid(zp->z_projid)) | |
1483 | err = zfs_statfs_project(zfsvfs, zp, statp, bshift); | |
1484 | } | |
1485 | ||
0037b49e | 1486 | ZFS_EXIT(zfsvfs); |
9c5167d1 | 1487 | return (err); |
34dc7c2f BB |
1488 | } |
1489 | ||
e5c39b95 | 1490 | int |
0037b49e | 1491 | zfs_root(zfsvfs_t *zfsvfs, struct inode **ipp) |
34dc7c2f | 1492 | { |
34dc7c2f BB |
1493 | znode_t *rootzp; |
1494 | int error; | |
1495 | ||
0037b49e | 1496 | ZFS_ENTER(zfsvfs); |
34dc7c2f | 1497 | |
0037b49e | 1498 | error = zfs_zget(zfsvfs, zfsvfs->z_root, &rootzp); |
34dc7c2f | 1499 | if (error == 0) |
3558fd73 | 1500 | *ipp = ZTOI(rootzp); |
34dc7c2f | 1501 | |
0037b49e | 1502 | ZFS_EXIT(zfsvfs); |
34dc7c2f BB |
1503 | return (error); |
1504 | } | |
1505 | ||
09fb30e5 | 1506 | #ifdef HAVE_D_PRUNE_ALIASES |
218b4e0a BB |
1507 | /* |
1508 | * Linux kernels older than 3.1 do not support a per-filesystem shrinker. | |
1509 | * To accommodate this we must improvise and manually walk the list of znodes | |
1510 | * attempting to prune dentries in order to be able to drop the inodes. | |
1511 | * | |
1512 | * To avoid scanning the same znodes multiple times they are always rotated | |
1513 | * to the end of the z_all_znodes list. New znodes are inserted at the | |
1514 | * end of the list so we're always scanning the oldest znodes first. | |
1515 | */ | |
1516 | static int | |
f298b24d | 1517 | zfs_prune_aliases(zfsvfs_t *zfsvfs, unsigned long nr_to_scan) |
218b4e0a BB |
1518 | { |
1519 | znode_t **zp_array, *zp; | |
1520 | int max_array = MIN(nr_to_scan, PAGE_SIZE * 8 / sizeof (znode_t *)); | |
1521 | int objects = 0; | |
1522 | int i = 0, j = 0; | |
1523 | ||
1524 | zp_array = kmem_zalloc(max_array * sizeof (znode_t *), KM_SLEEP); | |
1525 | ||
0037b49e BB |
1526 | mutex_enter(&zfsvfs->z_znodes_lock); |
1527 | while ((zp = list_head(&zfsvfs->z_all_znodes)) != NULL) { | |
218b4e0a BB |
1528 | |
1529 | if ((i++ > nr_to_scan) || (j >= max_array)) | |
1530 | break; | |
1531 | ||
1532 | ASSERT(list_link_active(&zp->z_link_node)); | |
0037b49e BB |
1533 | list_remove(&zfsvfs->z_all_znodes, zp); |
1534 | list_insert_tail(&zfsvfs->z_all_znodes, zp); | |
218b4e0a BB |
1535 | |
1536 | /* Skip active znodes and .zfs entries */ | |
1537 | if (MUTEX_HELD(&zp->z_lock) || zp->z_is_ctldir) | |
1538 | continue; | |
1539 | ||
1540 | if (igrab(ZTOI(zp)) == NULL) | |
1541 | continue; | |
1542 | ||
1543 | zp_array[j] = zp; | |
1544 | j++; | |
1545 | } | |
0037b49e | 1546 | mutex_exit(&zfsvfs->z_znodes_lock); |
218b4e0a BB |
1547 | |
1548 | for (i = 0; i < j; i++) { | |
1549 | zp = zp_array[i]; | |
1550 | ||
1551 | ASSERT3P(zp, !=, NULL); | |
1552 | d_prune_aliases(ZTOI(zp)); | |
1553 | ||
1554 | if (atomic_read(&ZTOI(zp)->i_count) == 1) | |
1555 | objects++; | |
1556 | ||
1557 | iput(ZTOI(zp)); | |
1558 | } | |
1559 | ||
1560 | kmem_free(zp_array, max_array * sizeof (znode_t *)); | |
1561 | ||
1562 | return (objects); | |
1563 | } | |
1564 | #endif /* HAVE_D_PRUNE_ALIASES */ | |
1565 | ||
2cbb06b5 BB |
1566 | /* |
1567 | * The ARC has requested that the filesystem drop entries from the dentry | |
1568 | * and inode caches. This can occur when the ARC needs to free meta data | |
1569 | * blocks but can't because they are all pinned by entries in these caches. | |
1570 | */ | |
ab26409d | 1571 | int |
f298b24d | 1572 | zfs_prune(struct super_block *sb, unsigned long nr_to_scan, int *objects) |
ab26409d | 1573 | { |
0037b49e | 1574 | zfsvfs_t *zfsvfs = sb->s_fs_info; |
2cbb06b5 BB |
1575 | int error = 0; |
1576 | #if defined(HAVE_SHRINK) || defined(HAVE_SPLIT_SHRINKER_CALLBACK) | |
ab26409d BB |
1577 | struct shrinker *shrinker = &sb->s_shrink; |
1578 | struct shrink_control sc = { | |
1579 | .nr_to_scan = nr_to_scan, | |
1580 | .gfp_mask = GFP_KERNEL, | |
1581 | }; | |
2cbb06b5 | 1582 | #endif |
ab26409d | 1583 | |
0037b49e | 1584 | ZFS_ENTER(zfsvfs); |
2cbb06b5 | 1585 | |
90947b23 TC |
1586 | #if defined(HAVE_SPLIT_SHRINKER_CALLBACK) && \ |
1587 | defined(SHRINK_CONTROL_HAS_NID) && \ | |
1588 | defined(SHRINKER_NUMA_AWARE) | |
1589 | if (sb->s_shrink.flags & SHRINKER_NUMA_AWARE) { | |
1590 | *objects = 0; | |
02730c33 | 1591 | for_each_online_node(sc.nid) { |
90947b23 | 1592 | *objects += (*shrinker->scan_objects)(shrinker, &sc); |
02730c33 | 1593 | } |
90947b23 TC |
1594 | } else { |
1595 | *objects = (*shrinker->scan_objects)(shrinker, &sc); | |
1596 | } | |
09fb30e5 | 1597 | |
90947b23 | 1598 | #elif defined(HAVE_SPLIT_SHRINKER_CALLBACK) |
3c832b8c | 1599 | *objects = (*shrinker->scan_objects)(shrinker, &sc); |
2cbb06b5 | 1600 | #elif defined(HAVE_SHRINK) |
ab26409d | 1601 | *objects = (*shrinker->shrink)(shrinker, &sc); |
218b4e0a | 1602 | #elif defined(HAVE_D_PRUNE_ALIASES) |
09fb30e5 | 1603 | #define D_PRUNE_ALIASES_IS_DEFAULT |
f298b24d | 1604 | *objects = zfs_prune_aliases(zfsvfs, nr_to_scan); |
2cbb06b5 | 1605 | #else |
218b4e0a | 1606 | #error "No available dentry and inode cache pruning mechanism." |
3c832b8c | 1607 | #endif |
09fb30e5 TC |
1608 | |
1609 | #if defined(HAVE_D_PRUNE_ALIASES) && !defined(D_PRUNE_ALIASES_IS_DEFAULT) | |
1610 | #undef D_PRUNE_ALIASES_IS_DEFAULT | |
1611 | /* | |
f298b24d | 1612 | * Fall back to zfs_prune_aliases if the kernel's per-superblock |
09fb30e5 TC |
1613 | * shrinker couldn't free anything, possibly due to the inodes being |
1614 | * allocated in a different memcg. | |
1615 | */ | |
1616 | if (*objects == 0) | |
f298b24d | 1617 | *objects = zfs_prune_aliases(zfsvfs, nr_to_scan); |
09fb30e5 TC |
1618 | #endif |
1619 | ||
0037b49e | 1620 | ZFS_EXIT(zfsvfs); |
ab26409d | 1621 | |
0037b49e | 1622 | dprintf_ds(zfsvfs->z_os->os_dsl_dataset, |
2cbb06b5 BB |
1623 | "pruning, nr_to_scan=%lu objects=%d error=%d\n", |
1624 | nr_to_scan, *objects, error); | |
1625 | ||
1626 | return (error); | |
ab26409d | 1627 | } |
ab26409d | 1628 | |
34dc7c2f | 1629 | /* |
0037b49e | 1630 | * Teardown the zfsvfs_t. |
34dc7c2f | 1631 | * |
a08abc1b | 1632 | * Note, if 'unmounting' is FALSE, we return with the 'z_teardown_lock' |
34dc7c2f BB |
1633 | * and 'z_teardown_inactive_lock' held. |
1634 | */ | |
f298b24d | 1635 | static int |
0037b49e | 1636 | zfsvfs_teardown(zfsvfs_t *zfsvfs, boolean_t unmounting) |
34dc7c2f BB |
1637 | { |
1638 | znode_t *zp; | |
1639 | ||
fd23720a BB |
1640 | /* |
1641 | * If someone has not already unmounted this file system, | |
1642 | * drain the iput_taskq to ensure all active references to the | |
0037b49e | 1643 | * zfsvfs_t have been handled only then can it be safely destroyed. |
fd23720a | 1644 | */ |
0037b49e | 1645 | if (zfsvfs->z_os) { |
f0da4d15 CD |
1646 | /* |
1647 | * If we're unmounting we have to wait for the list to | |
1648 | * drain completely. | |
1649 | * | |
1650 | * If we're not unmounting there's no guarantee the list | |
1651 | * will drain completely, but iputs run from the taskq | |
1652 | * may add the parents of dir-based xattrs to the taskq | |
1653 | * so we want to wait for these. | |
1654 | * | |
1655 | * We can safely read z_nr_znodes without locking because the | |
1656 | * VFS has already blocked operations which add to the | |
1657 | * z_all_znodes list and thus increment z_nr_znodes. | |
1658 | */ | |
1659 | int round = 0; | |
0037b49e | 1660 | while (zfsvfs->z_nr_znodes > 0) { |
c5528b9b | 1661 | taskq_wait_outstanding(dsl_pool_iput_taskq( |
0037b49e | 1662 | dmu_objset_pool(zfsvfs->z_os)), 0); |
f0da4d15 CD |
1663 | if (++round > 1 && !unmounting) |
1664 | break; | |
1665 | } | |
1666 | } | |
fd23720a | 1667 | |
0037b49e | 1668 | rrm_enter(&zfsvfs->z_teardown_lock, RW_WRITER, FTAG); |
34dc7c2f BB |
1669 | |
1670 | if (!unmounting) { | |
1671 | /* | |
ceb43b93 BB |
1672 | * We purge the parent filesystem's super block as the |
1673 | * parent filesystem and all of its snapshots have their | |
1674 | * inode's super block set to the parent's filesystem's | |
1675 | * super block. Note, 'z_parent' is self referential | |
1676 | * for non-snapshots. | |
34dc7c2f | 1677 | */ |
0037b49e | 1678 | shrink_dcache_sb(zfsvfs->z_parent->z_sb); |
34dc7c2f BB |
1679 | } |
1680 | ||
1681 | /* | |
1682 | * Close the zil. NB: Can't close the zil while zfs_inactive | |
1683 | * threads are blocked as zil_close can call zfs_inactive. | |
1684 | */ | |
0037b49e BB |
1685 | if (zfsvfs->z_log) { |
1686 | zil_close(zfsvfs->z_log); | |
1687 | zfsvfs->z_log = NULL; | |
34dc7c2f BB |
1688 | } |
1689 | ||
0037b49e | 1690 | rw_enter(&zfsvfs->z_teardown_inactive_lock, RW_WRITER); |
34dc7c2f BB |
1691 | |
1692 | /* | |
1693 | * If we are not unmounting (ie: online recv) and someone already | |
1694 | * unmounted this file system while we were doing the switcheroo, | |
1695 | * or a reopen of z_os failed then just bail out now. | |
1696 | */ | |
0037b49e BB |
1697 | if (!unmounting && (zfsvfs->z_unmounted || zfsvfs->z_os == NULL)) { |
1698 | rw_exit(&zfsvfs->z_teardown_inactive_lock); | |
1699 | rrm_exit(&zfsvfs->z_teardown_lock, FTAG); | |
2e528b49 | 1700 | return (SET_ERROR(EIO)); |
34dc7c2f BB |
1701 | } |
1702 | ||
1703 | /* | |
7b3e34ba BB |
1704 | * At this point there are no VFS ops active, and any new VFS ops |
1705 | * will fail with EIO since we have z_teardown_lock for writer (only | |
1706 | * relevant for forced unmount). | |
34dc7c2f BB |
1707 | * |
1708 | * Release all holds on dbufs. | |
1709 | */ | |
f0da4d15 | 1710 | if (!unmounting) { |
0037b49e BB |
1711 | mutex_enter(&zfsvfs->z_znodes_lock); |
1712 | for (zp = list_head(&zfsvfs->z_all_znodes); zp != NULL; | |
1713 | zp = list_next(&zfsvfs->z_all_znodes, zp)) { | |
f0da4d15 CD |
1714 | if (zp->z_sa_hdl) |
1715 | zfs_znode_dmu_fini(zp); | |
1716 | } | |
0037b49e | 1717 | mutex_exit(&zfsvfs->z_znodes_lock); |
7b3e34ba | 1718 | } |
34dc7c2f BB |
1719 | |
1720 | /* | |
7b3e34ba | 1721 | * If we are unmounting, set the unmounted flag and let new VFS ops |
34dc7c2f | 1722 | * unblock. zfs_inactive will have the unmounted behavior, and all |
7b3e34ba | 1723 | * other VFS ops will fail with EIO. |
34dc7c2f BB |
1724 | */ |
1725 | if (unmounting) { | |
0037b49e BB |
1726 | zfsvfs->z_unmounted = B_TRUE; |
1727 | rw_exit(&zfsvfs->z_teardown_inactive_lock); | |
1728 | rrm_exit(&zfsvfs->z_teardown_lock, FTAG); | |
34dc7c2f BB |
1729 | } |
1730 | ||
1731 | /* | |
1732 | * z_os will be NULL if there was an error in attempting to reopen | |
0037b49e | 1733 | * zfsvfs, so just return as the properties had already been |
3558fd73 | 1734 | * |
34dc7c2f BB |
1735 | * unregistered and cached data had been evicted before. |
1736 | */ | |
0037b49e | 1737 | if (zfsvfs->z_os == NULL) |
34dc7c2f BB |
1738 | return (0); |
1739 | ||
1740 | /* | |
1741 | * Unregister properties. | |
1742 | */ | |
0037b49e | 1743 | zfs_unregister_callbacks(zfsvfs); |
34dc7c2f BB |
1744 | |
1745 | /* | |
47ab01a1 TC |
1746 | * Evict cached data. We must write out any dirty data before |
1747 | * disowning the dataset. | |
34dc7c2f | 1748 | */ |
47ab01a1 | 1749 | if (!zfs_is_readonly(zfsvfs)) |
0037b49e BB |
1750 | txg_wait_synced(dmu_objset_pool(zfsvfs->z_os), 0); |
1751 | dmu_objset_evict_dbufs(zfsvfs->z_os); | |
34dc7c2f BB |
1752 | |
1753 | return (0); | |
1754 | } | |
1755 | ||
3e6c9433 | 1756 | #if !defined(HAVE_2ARGS_BDI_SETUP_AND_REGISTER) && \ |
8c45def2 | 1757 | !defined(HAVE_3ARGS_BDI_SETUP_AND_REGISTER) |
5547c2f1 | 1758 | atomic_long_t zfs_bdi_seq = ATOMIC_LONG_INIT(0); |
8c45def2 | 1759 | #endif |
76659dc1 | 1760 | |
e5c39b95 | 1761 | int |
1c2555ef | 1762 | zfs_domount(struct super_block *sb, zfs_mnt_t *zm, int silent) |
34dc7c2f | 1763 | { |
1c2555ef | 1764 | const char *osname = zm->mnt_osname; |
3558fd73 BB |
1765 | struct inode *root_inode; |
1766 | uint64_t recordsize; | |
1c2555ef | 1767 | int error = 0; |
163a8c28 TC |
1768 | zfsvfs_t *zfsvfs = NULL; |
1769 | vfs_t *vfs = NULL; | |
1c2555ef BB |
1770 | |
1771 | ASSERT(zm); | |
1772 | ASSERT(osname); | |
34dc7c2f | 1773 | |
163a8c28 | 1774 | error = zfsvfs_parse_options(zm->mnt_data, &vfs); |
3558fd73 BB |
1775 | if (error) |
1776 | return (error); | |
1777 | ||
163a8c28 TC |
1778 | error = zfsvfs_create(osname, vfs->vfs_readonly, &zfsvfs); |
1779 | if (error) { | |
1780 | zfsvfs_vfs_free(vfs); | |
1c2555ef | 1781 | goto out; |
163a8c28 | 1782 | } |
1c2555ef | 1783 | |
3558fd73 | 1784 | if ((error = dsl_prop_get_integer(osname, "recordsize", |
163a8c28 TC |
1785 | &recordsize, NULL))) { |
1786 | zfsvfs_vfs_free(vfs); | |
3558fd73 | 1787 | goto out; |
163a8c28 | 1788 | } |
3558fd73 | 1789 | |
163a8c28 TC |
1790 | vfs->vfs_data = zfsvfs; |
1791 | zfsvfs->z_vfs = vfs; | |
0037b49e BB |
1792 | zfsvfs->z_sb = sb; |
1793 | sb->s_fs_info = zfsvfs; | |
3558fd73 BB |
1794 | sb->s_magic = ZFS_SUPER_MAGIC; |
1795 | sb->s_maxbytes = MAX_LFS_FILESIZE; | |
1796 | sb->s_time_gran = 1; | |
1797 | sb->s_blocksize = recordsize; | |
1798 | sb->s_blocksize_bits = ilog2(recordsize); | |
5547c2f1 | 1799 | |
7dae2c81 | 1800 | error = -zpl_bdi_setup(sb, "zfs"); |
5547c2f1 BB |
1801 | if (error) |
1802 | goto out; | |
3558fd73 | 1803 | |
7dae2c81 BB |
1804 | sb->s_bdi->ra_pages = 0; |
1805 | ||
3558fd73 BB |
1806 | /* Set callback operations for the file system. */ |
1807 | sb->s_op = &zpl_super_operations; | |
1808 | sb->s_xattr = zpl_xattr_handlers; | |
055656d4 | 1809 | sb->s_export_op = &zpl_export_operations; |
ee930353 BB |
1810 | #ifdef HAVE_S_D_OP |
1811 | sb->s_d_op = &zpl_dentry_operations; | |
1812 | #endif /* HAVE_S_D_OP */ | |
3558fd73 BB |
1813 | |
1814 | /* Set features for file system. */ | |
0037b49e | 1815 | zfs_set_fuid_feature(zfsvfs); |
3558fd73 | 1816 | |
0037b49e | 1817 | if (dmu_objset_is_snapshot(zfsvfs->z_os)) { |
3558fd73 BB |
1818 | uint64_t pval; |
1819 | ||
0037b49e BB |
1820 | atime_changed_cb(zfsvfs, B_FALSE); |
1821 | readonly_changed_cb(zfsvfs, B_TRUE); | |
d1d7e268 MK |
1822 | if ((error = dsl_prop_get_integer(osname, |
1823 | "xattr", &pval, NULL))) | |
3558fd73 | 1824 | goto out; |
0037b49e | 1825 | xattr_changed_cb(zfsvfs, pval); |
d1d7e268 MK |
1826 | if ((error = dsl_prop_get_integer(osname, |
1827 | "acltype", &pval, NULL))) | |
023699cd | 1828 | goto out; |
0037b49e BB |
1829 | acltype_changed_cb(zfsvfs, pval); |
1830 | zfsvfs->z_issnap = B_TRUE; | |
1831 | zfsvfs->z_os->os_sync = ZFS_SYNC_DISABLED; | |
1832 | zfsvfs->z_snap_defer_time = jiffies; | |
1833 | ||
1834 | mutex_enter(&zfsvfs->z_os->os_user_ptr_lock); | |
1835 | dmu_objset_set_user(zfsvfs->z_os, zfsvfs); | |
1836 | mutex_exit(&zfsvfs->z_os->os_user_ptr_lock); | |
3558fd73 | 1837 | } else { |
f298b24d | 1838 | if ((error = zfsvfs_setup(zfsvfs, B_TRUE))) |
be88e733 | 1839 | goto out; |
34dc7c2f BB |
1840 | } |
1841 | ||
3558fd73 | 1842 | /* Allocate a root inode for the filesystem. */ |
0037b49e | 1843 | error = zfs_root(zfsvfs, &root_inode); |
3558fd73 BB |
1844 | if (error) { |
1845 | (void) zfs_umount(sb); | |
1846 | goto out; | |
34dc7c2f BB |
1847 | } |
1848 | ||
3558fd73 | 1849 | /* Allocate a root dentry for the filesystem */ |
6a0936ba | 1850 | sb->s_root = d_make_root(root_inode); |
3558fd73 BB |
1851 | if (sb->s_root == NULL) { |
1852 | (void) zfs_umount(sb); | |
2e528b49 | 1853 | error = SET_ERROR(ENOMEM); |
3558fd73 BB |
1854 | goto out; |
1855 | } | |
ebe7e575 | 1856 | |
0037b49e BB |
1857 | if (!zfsvfs->z_issnap) |
1858 | zfsctl_create(zfsvfs); | |
2cbb06b5 | 1859 | |
0037b49e | 1860 | zfsvfs->z_arc_prune = arc_add_prune_callback(zpl_prune_sb, sb); |
3558fd73 BB |
1861 | out: |
1862 | if (error) { | |
163a8c28 TC |
1863 | if (zfsvfs != NULL) { |
1864 | dmu_objset_disown(zfsvfs->z_os, B_TRUE, zfsvfs); | |
1865 | zfsvfs_free(zfsvfs); | |
1866 | } | |
be88e733 CC |
1867 | /* |
1868 | * make sure we don't have dangling sb->s_fs_info which | |
1869 | * zfs_preumount will use. | |
1870 | */ | |
1871 | sb->s_fs_info = NULL; | |
3558fd73 | 1872 | } |
34dc7c2f | 1873 | |
3558fd73 BB |
1874 | return (error); |
1875 | } | |
3558fd73 | 1876 | |
ebe7e575 BB |
1877 | /* |
1878 | * Called when an unmount is requested and certain sanity checks have | |
1879 | * already passed. At this point no dentries or inodes have been reclaimed | |
1880 | * from their respective caches. We drop the extra reference on the .zfs | |
1881 | * control directory to allow everything to be reclaimed. All snapshots | |
1882 | * must already have been unmounted to reach this point. | |
1883 | */ | |
1884 | void | |
1885 | zfs_preumount(struct super_block *sb) | |
1886 | { | |
0037b49e | 1887 | zfsvfs_t *zfsvfs = sb->s_fs_info; |
ebe7e575 | 1888 | |
0037b49e BB |
1889 | /* zfsvfs is NULL when zfs_domount fails during mount */ |
1890 | if (zfsvfs) { | |
278bee93 | 1891 | zfsctl_destroy(sb->s_fs_info); |
be88e733 CC |
1892 | /* |
1893 | * Wait for iput_async before entering evict_inodes in | |
1894 | * generic_shutdown_super. The reason we must finish before | |
1895 | * evict_inodes is when lazytime is on, or when zfs_purgedir | |
1896 | * calls zfs_zget, iput would bump i_count from 0 to 1. This | |
1897 | * would race with the i_count check in evict_inodes. This means | |
1898 | * it could destroy the inode while we are still using it. | |
1899 | * | |
1900 | * We wait for two passes. xattr directories in the first pass | |
1901 | * may add xattr entries in zfs_purgedir, so in the second pass | |
1902 | * we wait for them. We don't use taskq_wait here because it is | |
1903 | * a pool wide taskq. Other mounted filesystems can constantly | |
1904 | * do iput_async and there's no guarantee when taskq will be | |
1905 | * empty. | |
1906 | */ | |
1907 | taskq_wait_outstanding(dsl_pool_iput_taskq( | |
0037b49e | 1908 | dmu_objset_pool(zfsvfs->z_os)), 0); |
be88e733 | 1909 | taskq_wait_outstanding(dsl_pool_iput_taskq( |
0037b49e | 1910 | dmu_objset_pool(zfsvfs->z_os)), 0); |
be88e733 | 1911 | } |
ebe7e575 | 1912 | } |
ebe7e575 BB |
1913 | |
1914 | /* | |
1915 | * Called once all other unmount released tear down has occurred. | |
1916 | * It is our responsibility to release any remaining infrastructure. | |
1917 | */ | |
3558fd73 BB |
1918 | /*ARGSUSED*/ |
1919 | int | |
1920 | zfs_umount(struct super_block *sb) | |
1921 | { | |
0037b49e | 1922 | zfsvfs_t *zfsvfs = sb->s_fs_info; |
3558fd73 BB |
1923 | objset_t *os; |
1924 | ||
b5256303 TC |
1925 | if (zfsvfs->z_arc_prune != NULL) |
1926 | arc_remove_prune_callback(zfsvfs->z_arc_prune); | |
0037b49e BB |
1927 | VERIFY(zfsvfs_teardown(zfsvfs, B_TRUE) == 0); |
1928 | os = zfsvfs->z_os; | |
7dae2c81 | 1929 | zpl_bdi_destroy(sb); |
76659dc1 | 1930 | |
34dc7c2f BB |
1931 | /* |
1932 | * z_os will be NULL if there was an error in | |
0037b49e | 1933 | * attempting to reopen zfsvfs. |
34dc7c2f BB |
1934 | */ |
1935 | if (os != NULL) { | |
1936 | /* | |
1937 | * Unset the objset user_ptr. | |
1938 | */ | |
428870ff | 1939 | mutex_enter(&os->os_user_ptr_lock); |
34dc7c2f | 1940 | dmu_objset_set_user(os, NULL); |
428870ff | 1941 | mutex_exit(&os->os_user_ptr_lock); |
34dc7c2f BB |
1942 | |
1943 | /* | |
b128c09f | 1944 | * Finally release the objset |
34dc7c2f | 1945 | */ |
b5256303 | 1946 | dmu_objset_disown(os, B_TRUE, zfsvfs); |
34dc7c2f BB |
1947 | } |
1948 | ||
f298b24d | 1949 | zfsvfs_free(zfsvfs); |
34dc7c2f BB |
1950 | return (0); |
1951 | } | |
1952 | ||
0de19dad | 1953 | int |
1c2555ef | 1954 | zfs_remount(struct super_block *sb, int *flags, zfs_mnt_t *zm) |
0de19dad | 1955 | { |
0037b49e | 1956 | zfsvfs_t *zfsvfs = sb->s_fs_info; |
1c2555ef | 1957 | vfs_t *vfsp; |
08de8c16 | 1958 | boolean_t issnap = dmu_objset_is_snapshot(zfsvfs->z_os); |
0282c413 BB |
1959 | int error; |
1960 | ||
08de8c16 | 1961 | if ((issnap || !spa_writeable(dmu_objset_spa(zfsvfs->z_os))) && |
1962 | !(*flags & MS_RDONLY)) { | |
1963 | *flags |= MS_RDONLY; | |
1964 | return (EROFS); | |
1965 | } | |
1966 | ||
1c2555ef BB |
1967 | error = zfsvfs_parse_options(zm->mnt_data, &vfsp); |
1968 | if (error) | |
1969 | return (error); | |
1970 | ||
47ab01a1 TC |
1971 | if (!zfs_is_readonly(zfsvfs) && (*flags & MS_RDONLY)) |
1972 | txg_wait_synced(dmu_objset_pool(zfsvfs->z_os), 0); | |
1973 | ||
0037b49e | 1974 | zfs_unregister_callbacks(zfsvfs); |
1c2555ef BB |
1975 | zfsvfs_vfs_free(zfsvfs->z_vfs); |
1976 | ||
1977 | vfsp->vfs_data = zfsvfs; | |
1978 | zfsvfs->z_vfs = vfsp; | |
08de8c16 | 1979 | if (!issnap) |
1980 | (void) zfs_register_callbacks(vfsp); | |
0282c413 BB |
1981 | |
1982 | return (error); | |
0de19dad | 1983 | } |
0de19dad | 1984 | |
e5c39b95 | 1985 | int |
2cf7f52b | 1986 | zfs_vget(struct super_block *sb, struct inode **ipp, fid_t *fidp) |
34dc7c2f | 1987 | { |
0037b49e | 1988 | zfsvfs_t *zfsvfs = sb->s_fs_info; |
34dc7c2f BB |
1989 | znode_t *zp; |
1990 | uint64_t object = 0; | |
1991 | uint64_t fid_gen = 0; | |
1992 | uint64_t gen_mask; | |
1993 | uint64_t zp_gen; | |
3558fd73 | 1994 | int i, err; |
34dc7c2f | 1995 | |
3558fd73 | 1996 | *ipp = NULL; |
34dc7c2f | 1997 | |
9b77d1c9 CC |
1998 | if (fidp->fid_len == SHORT_FID_LEN || fidp->fid_len == LONG_FID_LEN) { |
1999 | zfid_short_t *zfid = (zfid_short_t *)fidp; | |
2000 | ||
2001 | for (i = 0; i < sizeof (zfid->zf_object); i++) | |
2002 | object |= ((uint64_t)zfid->zf_object[i]) << (8 * i); | |
34dc7c2f | 2003 | |
9b77d1c9 CC |
2004 | for (i = 0; i < sizeof (zfid->zf_gen); i++) |
2005 | fid_gen |= ((uint64_t)zfid->zf_gen[i]) << (8 * i); | |
2006 | } else { | |
2007 | return (SET_ERROR(EINVAL)); | |
2008 | } | |
2009 | ||
2010 | /* LONG_FID_LEN means snapdirs */ | |
34dc7c2f BB |
2011 | if (fidp->fid_len == LONG_FID_LEN) { |
2012 | zfid_long_t *zlfid = (zfid_long_t *)fidp; | |
2013 | uint64_t objsetid = 0; | |
2014 | uint64_t setgen = 0; | |
2015 | ||
2016 | for (i = 0; i < sizeof (zlfid->zf_setid); i++) | |
2017 | objsetid |= ((uint64_t)zlfid->zf_setid[i]) << (8 * i); | |
2018 | ||
2019 | for (i = 0; i < sizeof (zlfid->zf_setgen); i++) | |
2020 | setgen |= ((uint64_t)zlfid->zf_setgen[i]) << (8 * i); | |
2021 | ||
9b77d1c9 CC |
2022 | if (objsetid != ZFSCTL_INO_SNAPDIRS - object) { |
2023 | dprintf("snapdir fid: objsetid (%llu) != " | |
2024 | "ZFSCTL_INO_SNAPDIRS (%llu) - object (%llu)\n", | |
2025 | objsetid, ZFSCTL_INO_SNAPDIRS, object); | |
34dc7c2f | 2026 | |
2e528b49 | 2027 | return (SET_ERROR(EINVAL)); |
9b77d1c9 | 2028 | } |
ebe7e575 | 2029 | |
9b77d1c9 CC |
2030 | if (fid_gen > 1 || setgen != 0) { |
2031 | dprintf("snapdir fid: fid_gen (%llu) and setgen " | |
2032 | "(%llu)\n", fid_gen, setgen); | |
2033 | return (SET_ERROR(EINVAL)); | |
2034 | } | |
34dc7c2f | 2035 | |
9b77d1c9 | 2036 | return (zfsctl_snapdir_vget(sb, objsetid, fid_gen, ipp)); |
34dc7c2f BB |
2037 | } |
2038 | ||
0037b49e | 2039 | ZFS_ENTER(zfsvfs); |
34dc7c2f BB |
2040 | /* A zero fid_gen means we are in the .zfs control directories */ |
2041 | if (fid_gen == 0 && | |
2042 | (object == ZFSCTL_INO_ROOT || object == ZFSCTL_INO_SNAPDIR)) { | |
0037b49e | 2043 | *ipp = zfsvfs->z_ctldir; |
3558fd73 | 2044 | ASSERT(*ipp != NULL); |
34dc7c2f | 2045 | if (object == ZFSCTL_INO_SNAPDIR) { |
ebe7e575 BB |
2046 | VERIFY(zfsctl_root_lookup(*ipp, "snapshot", ipp, |
2047 | 0, kcred, NULL, NULL) == 0); | |
34dc7c2f | 2048 | } else { |
3558fd73 | 2049 | igrab(*ipp); |
34dc7c2f | 2050 | } |
0037b49e | 2051 | ZFS_EXIT(zfsvfs); |
34dc7c2f BB |
2052 | return (0); |
2053 | } | |
2054 | ||
2055 | gen_mask = -1ULL >> (64 - 8 * i); | |
2056 | ||
29e57d15 | 2057 | dprintf("getting %llu [%llu mask %llx]\n", object, fid_gen, gen_mask); |
0037b49e BB |
2058 | if ((err = zfs_zget(zfsvfs, object, &zp))) { |
2059 | ZFS_EXIT(zfsvfs); | |
34dc7c2f BB |
2060 | return (err); |
2061 | } | |
7938c2ac CC |
2062 | |
2063 | /* Don't export xattr stuff */ | |
2064 | if (zp->z_pflags & ZFS_XATTR) { | |
2065 | iput(ZTOI(zp)); | |
0037b49e | 2066 | ZFS_EXIT(zfsvfs); |
7938c2ac CC |
2067 | return (SET_ERROR(ENOENT)); |
2068 | } | |
2069 | ||
0037b49e | 2070 | (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_GEN(zfsvfs), &zp_gen, |
428870ff BB |
2071 | sizeof (uint64_t)); |
2072 | zp_gen = zp_gen & gen_mask; | |
34dc7c2f BB |
2073 | if (zp_gen == 0) |
2074 | zp_gen = 1; | |
0037b49e | 2075 | if ((fid_gen == 0) && (zfsvfs->z_root == object)) |
0500e835 | 2076 | fid_gen = zp_gen; |
34dc7c2f | 2077 | if (zp->z_unlinked || zp_gen != fid_gen) { |
29e57d15 NB |
2078 | dprintf("znode gen (%llu) != fid gen (%llu)\n", zp_gen, |
2079 | fid_gen); | |
3558fd73 | 2080 | iput(ZTOI(zp)); |
0037b49e | 2081 | ZFS_EXIT(zfsvfs); |
6c253064 | 2082 | return (SET_ERROR(ENOENT)); |
34dc7c2f BB |
2083 | } |
2084 | ||
3558fd73 BB |
2085 | *ipp = ZTOI(zp); |
2086 | if (*ipp) | |
2087 | zfs_inode_update(ITOZ(*ipp)); | |
960e08fe | 2088 | |
0037b49e | 2089 | ZFS_EXIT(zfsvfs); |
34dc7c2f BB |
2090 | return (0); |
2091 | } | |
2092 | ||
2093 | /* | |
0037b49e | 2094 | * Block out VFS ops and close zfsvfs_t |
34dc7c2f BB |
2095 | * |
2096 | * Note, if successful, then we return with the 'z_teardown_lock' and | |
831baf06 KW |
2097 | * 'z_teardown_inactive_lock' write held. We leave ownership of the underlying |
2098 | * dataset and objset intact so that they can be atomically handed off during | |
2099 | * a subsequent rollback or recv operation and the resume thereafter. | |
34dc7c2f BB |
2100 | */ |
2101 | int | |
0037b49e | 2102 | zfs_suspend_fs(zfsvfs_t *zfsvfs) |
34dc7c2f BB |
2103 | { |
2104 | int error; | |
2105 | ||
0037b49e | 2106 | if ((error = zfsvfs_teardown(zfsvfs, B_FALSE)) != 0) |
34dc7c2f | 2107 | return (error); |
7b3e34ba | 2108 | |
34dc7c2f BB |
2109 | return (0); |
2110 | } | |
2111 | ||
2112 | /* | |
8614ddf9 MA |
2113 | * Rebuild SA and release VOPs. Note that ownership of the underlying dataset |
2114 | * is an invariant across any of the operations that can be performed while the | |
2115 | * filesystem was suspended. Whether it succeeded or failed, the preconditions | |
2116 | * are the same: the relevant objset and associated dataset are owned by | |
2117 | * zfsvfs, held, and long held on entry. | |
34dc7c2f BB |
2118 | */ |
2119 | int | |
0037b49e | 2120 | zfs_resume_fs(zfsvfs_t *zfsvfs, dsl_dataset_t *ds) |
34dc7c2f | 2121 | { |
2008e920 | 2122 | int err, err2; |
831baf06 | 2123 | znode_t *zp; |
34dc7c2f | 2124 | |
0037b49e BB |
2125 | ASSERT(RRM_WRITE_HELD(&zfsvfs->z_teardown_lock)); |
2126 | ASSERT(RW_WRITE_HELD(&zfsvfs->z_teardown_inactive_lock)); | |
34dc7c2f | 2127 | |
831baf06 | 2128 | /* |
ec923db2 GM |
2129 | * We already own this, so just update the objset_t, as the one we |
2130 | * had before may have been evicted. | |
831baf06 | 2131 | */ |
8614ddf9 | 2132 | objset_t *os; |
0037b49e | 2133 | VERIFY3P(ds->ds_owner, ==, zfsvfs); |
ec923db2 | 2134 | VERIFY(dsl_dataset_long_held(ds)); |
8614ddf9 | 2135 | VERIFY0(dmu_objset_from_ds(ds, &os)); |
c1fabe79 | 2136 | |
8614ddf9 MA |
2137 | err = zfsvfs_init(zfsvfs, os); |
2138 | if (err != 0) | |
831baf06 | 2139 | goto bail; |
34dc7c2f | 2140 | |
f298b24d | 2141 | VERIFY(zfsvfs_setup(zfsvfs, B_FALSE) == 0); |
c1fabe79 | 2142 | |
0037b49e BB |
2143 | zfs_set_fuid_feature(zfsvfs); |
2144 | zfsvfs->z_rollback_time = jiffies; | |
34dc7c2f | 2145 | |
831baf06 KW |
2146 | /* |
2147 | * Attempt to re-establish all the active inodes with their | |
2148 | * dbufs. If a zfs_rezget() fails, then we unhash the inode | |
2149 | * and mark it stale. This prevents a collision if a new | |
2150 | * inode/object is created which must use the same inode | |
2151 | * number. The stale inode will be be released when the | |
2152 | * VFS prunes the dentry holding the remaining references | |
2153 | * on the stale inode. | |
2154 | */ | |
0037b49e BB |
2155 | mutex_enter(&zfsvfs->z_znodes_lock); |
2156 | for (zp = list_head(&zfsvfs->z_all_znodes); zp; | |
2157 | zp = list_next(&zfsvfs->z_all_znodes, zp)) { | |
2008e920 TC |
2158 | err2 = zfs_rezget(zp); |
2159 | if (err2) { | |
831baf06 KW |
2160 | remove_inode_hash(ZTOI(zp)); |
2161 | zp->z_is_stale = B_TRUE; | |
34dc7c2f | 2162 | } |
34dc7c2f | 2163 | } |
0037b49e | 2164 | mutex_exit(&zfsvfs->z_znodes_lock); |
34dc7c2f | 2165 | |
428870ff | 2166 | bail: |
7b3e34ba | 2167 | /* release the VFS ops */ |
0037b49e BB |
2168 | rw_exit(&zfsvfs->z_teardown_inactive_lock); |
2169 | rrm_exit(&zfsvfs->z_teardown_lock, FTAG); | |
34dc7c2f BB |
2170 | |
2171 | if (err) { | |
2172 | /* | |
831baf06 KW |
2173 | * Since we couldn't setup the sa framework, try to force |
2174 | * unmount this file system. | |
34dc7c2f | 2175 | */ |
0037b49e BB |
2176 | if (zfsvfs->z_os) |
2177 | (void) zfs_umount(zfsvfs->z_sb); | |
34dc7c2f BB |
2178 | } |
2179 | return (err); | |
2180 | } | |
2181 | ||
34dc7c2f | 2182 | int |
0037b49e | 2183 | zfs_set_version(zfsvfs_t *zfsvfs, uint64_t newvers) |
34dc7c2f BB |
2184 | { |
2185 | int error; | |
0037b49e | 2186 | objset_t *os = zfsvfs->z_os; |
34dc7c2f | 2187 | dmu_tx_t *tx; |
34dc7c2f BB |
2188 | |
2189 | if (newvers < ZPL_VERSION_INITIAL || newvers > ZPL_VERSION) | |
2e528b49 | 2190 | return (SET_ERROR(EINVAL)); |
34dc7c2f | 2191 | |
0037b49e | 2192 | if (newvers < zfsvfs->z_version) |
2e528b49 | 2193 | return (SET_ERROR(EINVAL)); |
34dc7c2f | 2194 | |
428870ff | 2195 | if (zfs_spa_version_map(newvers) > |
0037b49e | 2196 | spa_version(dmu_objset_spa(zfsvfs->z_os))) |
2e528b49 | 2197 | return (SET_ERROR(ENOTSUP)); |
428870ff | 2198 | |
34dc7c2f | 2199 | tx = dmu_tx_create(os); |
9babb374 | 2200 | dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, B_FALSE, ZPL_VERSION_STR); |
0037b49e | 2201 | if (newvers >= ZPL_VERSION_SA && !zfsvfs->z_use_sa) { |
428870ff BB |
2202 | dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, B_TRUE, |
2203 | ZFS_SA_ATTRS); | |
2204 | dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL); | |
2205 | } | |
34dc7c2f BB |
2206 | error = dmu_tx_assign(tx, TXG_WAIT); |
2207 | if (error) { | |
2208 | dmu_tx_abort(tx); | |
9babb374 BB |
2209 | return (error); |
2210 | } | |
428870ff | 2211 | |
9babb374 BB |
2212 | error = zap_update(os, MASTER_NODE_OBJ, ZPL_VERSION_STR, |
2213 | 8, 1, &newvers, tx); | |
2214 | ||
2215 | if (error) { | |
2216 | dmu_tx_commit(tx); | |
2217 | return (error); | |
34dc7c2f | 2218 | } |
34dc7c2f | 2219 | |
0037b49e | 2220 | if (newvers >= ZPL_VERSION_SA && !zfsvfs->z_use_sa) { |
428870ff BB |
2221 | uint64_t sa_obj; |
2222 | ||
0037b49e | 2223 | ASSERT3U(spa_version(dmu_objset_spa(zfsvfs->z_os)), >=, |
428870ff BB |
2224 | SPA_VERSION_SA); |
2225 | sa_obj = zap_create(os, DMU_OT_SA_MASTER_NODE, | |
2226 | DMU_OT_NONE, 0, tx); | |
2227 | ||
2228 | error = zap_add(os, MASTER_NODE_OBJ, | |
2229 | ZFS_SA_ATTRS, 8, 1, &sa_obj, tx); | |
c99c9001 | 2230 | ASSERT0(error); |
428870ff BB |
2231 | |
2232 | VERIFY(0 == sa_set_sa_object(os, sa_obj)); | |
2233 | sa_register_update_callback(os, zfs_sa_upgrade); | |
2234 | } | |
2235 | ||
6f1ffb06 | 2236 | spa_history_log_internal_ds(dmu_objset_ds(os), "upgrade", tx, |
0037b49e | 2237 | "from %llu to %llu", zfsvfs->z_version, newvers); |
9babb374 | 2238 | |
34dc7c2f BB |
2239 | dmu_tx_commit(tx); |
2240 | ||
0037b49e | 2241 | zfsvfs->z_version = newvers; |
2e5dc449 | 2242 | os->os_version = newvers; |
9babb374 | 2243 | |
0037b49e | 2244 | zfs_set_fuid_feature(zfsvfs); |
9babb374 BB |
2245 | |
2246 | return (0); | |
34dc7c2f BB |
2247 | } |
2248 | ||
2249 | /* | |
2250 | * Read a property stored within the master node. | |
2251 | */ | |
2252 | int | |
2253 | zfs_get_zplprop(objset_t *os, zfs_prop_t prop, uint64_t *value) | |
2254 | { | |
2e5dc449 MA |
2255 | uint64_t *cached_copy = NULL; |
2256 | ||
2257 | /* | |
2258 | * Figure out where in the objset_t the cached copy would live, if it | |
2259 | * is available for the requested property. | |
2260 | */ | |
2261 | if (os != NULL) { | |
2262 | switch (prop) { | |
2263 | case ZFS_PROP_VERSION: | |
2264 | cached_copy = &os->os_version; | |
2265 | break; | |
2266 | case ZFS_PROP_NORMALIZE: | |
2267 | cached_copy = &os->os_normalization; | |
2268 | break; | |
2269 | case ZFS_PROP_UTF8ONLY: | |
2270 | cached_copy = &os->os_utf8only; | |
2271 | break; | |
2272 | case ZFS_PROP_CASE: | |
2273 | cached_copy = &os->os_casesensitivity; | |
2274 | break; | |
2275 | default: | |
2276 | break; | |
2277 | } | |
2278 | } | |
2279 | if (cached_copy != NULL && *cached_copy != OBJSET_PROP_UNINITIALIZED) { | |
2280 | *value = *cached_copy; | |
2281 | return (0); | |
2282 | } | |
34dc7c2f BB |
2283 | |
2284 | /* | |
2e5dc449 MA |
2285 | * If the property wasn't cached, look up the file system's value for |
2286 | * the property. For the version property, we look up a slightly | |
2287 | * different string. | |
34dc7c2f | 2288 | */ |
2e5dc449 MA |
2289 | const char *pname; |
2290 | int error = ENOENT; | |
34dc7c2f BB |
2291 | if (prop == ZFS_PROP_VERSION) |
2292 | pname = ZPL_VERSION_STR; | |
2293 | else | |
2294 | pname = zfs_prop_to_name(prop); | |
2295 | ||
87a275d9 AG |
2296 | if (os != NULL) { |
2297 | ASSERT3U(os->os_phys->os_type, ==, DMU_OST_ZFS); | |
b128c09f | 2298 | error = zap_lookup(os, MASTER_NODE_OBJ, pname, 8, 1, value); |
87a275d9 | 2299 | } |
34dc7c2f BB |
2300 | |
2301 | if (error == ENOENT) { | |
2302 | /* No value set, use the default value */ | |
2303 | switch (prop) { | |
2304 | case ZFS_PROP_VERSION: | |
2305 | *value = ZPL_VERSION; | |
2306 | break; | |
2307 | case ZFS_PROP_NORMALIZE: | |
2308 | case ZFS_PROP_UTF8ONLY: | |
2309 | *value = 0; | |
2310 | break; | |
2311 | case ZFS_PROP_CASE: | |
2312 | *value = ZFS_CASE_SENSITIVE; | |
2313 | break; | |
023699cd MM |
2314 | case ZFS_PROP_ACLTYPE: |
2315 | *value = ZFS_ACLTYPE_OFF; | |
2316 | break; | |
34dc7c2f BB |
2317 | default: |
2318 | return (error); | |
2319 | } | |
2320 | error = 0; | |
2321 | } | |
2e5dc449 MA |
2322 | |
2323 | /* | |
2324 | * If one of the methods for getting the property value above worked, | |
2325 | * copy it into the objset_t's cache. | |
2326 | */ | |
2327 | if (error == 0 && cached_copy != NULL) { | |
2328 | *cached_copy = *value; | |
2329 | } | |
2330 | ||
34dc7c2f BB |
2331 | return (error); |
2332 | } | |
3558fd73 | 2333 | |
a08abc1b GM |
2334 | /* |
2335 | * Return true if the coresponding vfs's unmounted flag is set. | |
2336 | * Otherwise return false. | |
2337 | * If this function returns true we know VFS unmount has been initiated. | |
2338 | */ | |
2339 | boolean_t | |
2340 | zfs_get_vfs_flag_unmounted(objset_t *os) | |
2341 | { | |
0037b49e | 2342 | zfsvfs_t *zfvp; |
a08abc1b GM |
2343 | boolean_t unmounted = B_FALSE; |
2344 | ||
2345 | ASSERT(dmu_objset_type(os) == DMU_OST_ZFS); | |
2346 | ||
2347 | mutex_enter(&os->os_user_ptr_lock); | |
2348 | zfvp = dmu_objset_get_user(os); | |
2349 | if (zfvp != NULL && zfvp->z_unmounted) | |
2350 | unmounted = B_TRUE; | |
2351 | mutex_exit(&os->os_user_ptr_lock); | |
2352 | ||
2353 | return (unmounted); | |
2354 | } | |
2355 | ||
3558fd73 BB |
2356 | void |
2357 | zfs_init(void) | |
2358 | { | |
ebe7e575 | 2359 | zfsctl_init(); |
3558fd73 BB |
2360 | zfs_znode_init(); |
2361 | dmu_objset_register_type(DMU_OST_ZFS, zfs_space_delta_cb); | |
2362 | register_filesystem(&zpl_fs_type); | |
2363 | } | |
2364 | ||
2365 | void | |
2366 | zfs_fini(void) | |
2367 | { | |
8e71ab99 CC |
2368 | /* |
2369 | * we don't use outstanding because zpl_posix_acl_free might add more. | |
2370 | */ | |
57ddcda1 | 2371 | taskq_wait(system_delay_taskq); |
8e71ab99 | 2372 | taskq_wait(system_taskq); |
3558fd73 BB |
2373 | unregister_filesystem(&zpl_fs_type); |
2374 | zfs_znode_fini(); | |
ebe7e575 | 2375 | zfsctl_fini(); |
3558fd73 | 2376 | } |
f298b24d | 2377 | |
93ce2b4c | 2378 | #if defined(_KERNEL) |
f298b24d BB |
2379 | EXPORT_SYMBOL(zfs_suspend_fs); |
2380 | EXPORT_SYMBOL(zfs_resume_fs); | |
2381 | EXPORT_SYMBOL(zfs_userspace_one); | |
2382 | EXPORT_SYMBOL(zfs_userspace_many); | |
2383 | EXPORT_SYMBOL(zfs_set_userquota); | |
9c5167d1 NF |
2384 | EXPORT_SYMBOL(zfs_id_overblockquota); |
2385 | EXPORT_SYMBOL(zfs_id_overobjquota); | |
2386 | EXPORT_SYMBOL(zfs_id_overquota); | |
f298b24d BB |
2387 | EXPORT_SYMBOL(zfs_set_version); |
2388 | EXPORT_SYMBOL(zfsvfs_create); | |
2389 | EXPORT_SYMBOL(zfsvfs_free); | |
2390 | EXPORT_SYMBOL(zfs_is_readonly); | |
2391 | EXPORT_SYMBOL(zfs_domount); | |
2392 | EXPORT_SYMBOL(zfs_preumount); | |
2393 | EXPORT_SYMBOL(zfs_umount); | |
2394 | EXPORT_SYMBOL(zfs_remount); | |
2395 | EXPORT_SYMBOL(zfs_statvfs); | |
2396 | EXPORT_SYMBOL(zfs_vget); | |
2397 | EXPORT_SYMBOL(zfs_prune); | |
2398 | #endif |