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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> |
05805494 | 59 | #include <linux/vfs_compat.h> |
428870ff | 60 | #include "zfs_comutil.h" |
34dc7c2f | 61 | |
1c2555ef BB |
62 | enum { |
63 | TOKEN_RO, | |
64 | TOKEN_RW, | |
65 | TOKEN_SETUID, | |
66 | TOKEN_NOSETUID, | |
67 | TOKEN_EXEC, | |
68 | TOKEN_NOEXEC, | |
69 | TOKEN_DEVICES, | |
70 | TOKEN_NODEVICES, | |
71 | TOKEN_DIRXATTR, | |
72 | TOKEN_SAXATTR, | |
73 | TOKEN_XATTR, | |
74 | TOKEN_NOXATTR, | |
75 | TOKEN_ATIME, | |
76 | TOKEN_NOATIME, | |
77 | TOKEN_RELATIME, | |
78 | TOKEN_NORELATIME, | |
79 | TOKEN_NBMAND, | |
80 | TOKEN_NONBMAND, | |
81 | TOKEN_MNTPOINT, | |
82 | TOKEN_LAST, | |
83 | }; | |
84 | ||
85 | static const match_table_t zpl_tokens = { | |
86 | { TOKEN_RO, MNTOPT_RO }, | |
87 | { TOKEN_RW, MNTOPT_RW }, | |
88 | { TOKEN_SETUID, MNTOPT_SETUID }, | |
89 | { TOKEN_NOSETUID, MNTOPT_NOSETUID }, | |
90 | { TOKEN_EXEC, MNTOPT_EXEC }, | |
91 | { TOKEN_NOEXEC, MNTOPT_NOEXEC }, | |
92 | { TOKEN_DEVICES, MNTOPT_DEVICES }, | |
93 | { TOKEN_NODEVICES, MNTOPT_NODEVICES }, | |
94 | { TOKEN_DIRXATTR, MNTOPT_DIRXATTR }, | |
95 | { TOKEN_SAXATTR, MNTOPT_SAXATTR }, | |
96 | { TOKEN_XATTR, MNTOPT_XATTR }, | |
97 | { TOKEN_NOXATTR, MNTOPT_NOXATTR }, | |
98 | { TOKEN_ATIME, MNTOPT_ATIME }, | |
99 | { TOKEN_NOATIME, MNTOPT_NOATIME }, | |
100 | { TOKEN_RELATIME, MNTOPT_RELATIME }, | |
101 | { TOKEN_NORELATIME, MNTOPT_NORELATIME }, | |
102 | { TOKEN_NBMAND, MNTOPT_NBMAND }, | |
103 | { TOKEN_NONBMAND, MNTOPT_NONBMAND }, | |
104 | { TOKEN_MNTPOINT, MNTOPT_MNTPOINT "=%s" }, | |
105 | { TOKEN_LAST, NULL }, | |
106 | }; | |
107 | ||
108 | static void | |
109 | zfsvfs_vfs_free(vfs_t *vfsp) | |
110 | { | |
111 | if (vfsp != NULL) { | |
112 | if (vfsp->vfs_mntpoint != NULL) | |
113 | strfree(vfsp->vfs_mntpoint); | |
114 | ||
115 | kmem_free(vfsp, sizeof (vfs_t)); | |
116 | } | |
117 | } | |
118 | ||
119 | static int | |
120 | zfsvfs_parse_option(char *option, int token, substring_t *args, vfs_t *vfsp) | |
121 | { | |
122 | switch (token) { | |
123 | case TOKEN_RO: | |
124 | vfsp->vfs_readonly = B_TRUE; | |
125 | vfsp->vfs_do_readonly = B_TRUE; | |
126 | break; | |
127 | case TOKEN_RW: | |
128 | vfsp->vfs_readonly = B_FALSE; | |
129 | vfsp->vfs_do_readonly = B_TRUE; | |
130 | break; | |
131 | case TOKEN_SETUID: | |
132 | vfsp->vfs_setuid = B_TRUE; | |
133 | vfsp->vfs_do_setuid = B_TRUE; | |
134 | break; | |
135 | case TOKEN_NOSETUID: | |
136 | vfsp->vfs_setuid = B_FALSE; | |
137 | vfsp->vfs_do_setuid = B_TRUE; | |
138 | break; | |
139 | case TOKEN_EXEC: | |
140 | vfsp->vfs_exec = B_TRUE; | |
141 | vfsp->vfs_do_exec = B_TRUE; | |
142 | break; | |
143 | case TOKEN_NOEXEC: | |
144 | vfsp->vfs_exec = B_FALSE; | |
145 | vfsp->vfs_do_exec = B_TRUE; | |
146 | break; | |
147 | case TOKEN_DEVICES: | |
148 | vfsp->vfs_devices = B_TRUE; | |
149 | vfsp->vfs_do_devices = B_TRUE; | |
150 | break; | |
151 | case TOKEN_NODEVICES: | |
152 | vfsp->vfs_devices = B_FALSE; | |
153 | vfsp->vfs_do_devices = B_TRUE; | |
154 | break; | |
155 | case TOKEN_DIRXATTR: | |
156 | vfsp->vfs_xattr = ZFS_XATTR_DIR; | |
157 | vfsp->vfs_do_xattr = B_TRUE; | |
158 | break; | |
159 | case TOKEN_SAXATTR: | |
160 | vfsp->vfs_xattr = ZFS_XATTR_SA; | |
161 | vfsp->vfs_do_xattr = B_TRUE; | |
162 | break; | |
163 | case TOKEN_XATTR: | |
164 | vfsp->vfs_xattr = ZFS_XATTR_DIR; | |
165 | vfsp->vfs_do_xattr = B_TRUE; | |
166 | break; | |
167 | case TOKEN_NOXATTR: | |
168 | vfsp->vfs_xattr = ZFS_XATTR_OFF; | |
169 | vfsp->vfs_do_xattr = B_TRUE; | |
170 | break; | |
171 | case TOKEN_ATIME: | |
172 | vfsp->vfs_atime = B_TRUE; | |
173 | vfsp->vfs_do_atime = B_TRUE; | |
174 | break; | |
175 | case TOKEN_NOATIME: | |
176 | vfsp->vfs_atime = B_FALSE; | |
177 | vfsp->vfs_do_atime = B_TRUE; | |
178 | break; | |
179 | case TOKEN_RELATIME: | |
180 | vfsp->vfs_relatime = B_TRUE; | |
181 | vfsp->vfs_do_relatime = B_TRUE; | |
182 | break; | |
183 | case TOKEN_NORELATIME: | |
184 | vfsp->vfs_relatime = B_FALSE; | |
185 | vfsp->vfs_do_relatime = B_TRUE; | |
186 | break; | |
187 | case TOKEN_NBMAND: | |
188 | vfsp->vfs_nbmand = B_TRUE; | |
189 | vfsp->vfs_do_nbmand = B_TRUE; | |
190 | break; | |
191 | case TOKEN_NONBMAND: | |
192 | vfsp->vfs_nbmand = B_FALSE; | |
193 | vfsp->vfs_do_nbmand = B_TRUE; | |
194 | break; | |
195 | case TOKEN_MNTPOINT: | |
196 | vfsp->vfs_mntpoint = match_strdup(&args[0]); | |
197 | if (vfsp->vfs_mntpoint == NULL) | |
198 | return (SET_ERROR(ENOMEM)); | |
199 | ||
200 | break; | |
201 | default: | |
202 | break; | |
203 | } | |
204 | ||
205 | return (0); | |
206 | } | |
207 | ||
208 | /* | |
209 | * Parse the raw mntopts and return a vfs_t describing the options. | |
210 | */ | |
211 | static int | |
212 | zfsvfs_parse_options(char *mntopts, vfs_t **vfsp) | |
213 | { | |
214 | vfs_t *tmp_vfsp; | |
215 | int error; | |
216 | ||
217 | tmp_vfsp = kmem_zalloc(sizeof (vfs_t), KM_SLEEP); | |
218 | ||
219 | if (mntopts != NULL) { | |
220 | substring_t args[MAX_OPT_ARGS]; | |
221 | char *tmp_mntopts, *p, *t; | |
222 | int token; | |
223 | ||
224 | tmp_mntopts = t = strdup(mntopts); | |
225 | if (tmp_mntopts == NULL) | |
226 | return (SET_ERROR(ENOMEM)); | |
227 | ||
228 | while ((p = strsep(&t, ",")) != NULL) { | |
229 | if (!*p) | |
230 | continue; | |
231 | ||
232 | args[0].to = args[0].from = NULL; | |
233 | token = match_token(p, zpl_tokens, args); | |
234 | error = zfsvfs_parse_option(p, token, args, tmp_vfsp); | |
235 | if (error) { | |
236 | strfree(tmp_mntopts); | |
237 | zfsvfs_vfs_free(tmp_vfsp); | |
238 | return (error); | |
239 | } | |
240 | } | |
241 | ||
242 | strfree(tmp_mntopts); | |
243 | } | |
244 | ||
245 | *vfsp = tmp_vfsp; | |
246 | ||
247 | return (0); | |
248 | } | |
249 | ||
250 | boolean_t | |
251 | zfs_is_readonly(zfsvfs_t *zfsvfs) | |
252 | { | |
05805494 | 253 | return (!!(zfsvfs->z_sb->s_flags & SB_RDONLY)); |
1c2555ef BB |
254 | } |
255 | ||
34dc7c2f BB |
256 | /*ARGSUSED*/ |
257 | int | |
03f9ba9d | 258 | zfs_sync(struct super_block *sb, int wait, cred_t *cr) |
34dc7c2f | 259 | { |
0037b49e | 260 | zfsvfs_t *zfsvfs = sb->s_fs_info; |
03f9ba9d | 261 | |
03f9ba9d BB |
262 | /* |
263 | * Semantically, the only requirement is that the sync be initiated. | |
264 | * The DMU syncs out txgs frequently, so there's nothing to do. | |
265 | */ | |
266 | if (!wait) | |
267 | return (0); | |
268 | ||
0037b49e | 269 | if (zfsvfs != NULL) { |
34dc7c2f BB |
270 | /* |
271 | * Sync a specific filesystem. | |
272 | */ | |
9babb374 | 273 | dsl_pool_t *dp; |
34dc7c2f | 274 | |
0037b49e BB |
275 | ZFS_ENTER(zfsvfs); |
276 | dp = dmu_objset_pool(zfsvfs->z_os); | |
9babb374 BB |
277 | |
278 | /* | |
279 | * If the system is shutting down, then skip any | |
280 | * filesystems which may exist on a suspended pool. | |
281 | */ | |
03f9ba9d | 282 | if (spa_suspended(dp->dp_spa)) { |
0037b49e | 283 | ZFS_EXIT(zfsvfs); |
9babb374 BB |
284 | return (0); |
285 | } | |
286 | ||
0037b49e BB |
287 | if (zfsvfs->z_log != NULL) |
288 | zil_commit(zfsvfs->z_log, 0); | |
428870ff | 289 | |
0037b49e | 290 | ZFS_EXIT(zfsvfs); |
34dc7c2f BB |
291 | } else { |
292 | /* | |
293 | * Sync all ZFS filesystems. This is what happens when you | |
294 | * run sync(1M). Unlike other filesystems, ZFS honors the | |
295 | * request by waiting for all pools to commit all dirty data. | |
296 | */ | |
297 | spa_sync_allpools(); | |
298 | } | |
299 | ||
300 | return (0); | |
301 | } | |
302 | ||
34dc7c2f BB |
303 | static void |
304 | atime_changed_cb(void *arg, uint64_t newval) | |
305 | { | |
0037b49e | 306 | ((zfsvfs_t *)arg)->z_atime = newval; |
34dc7c2f BB |
307 | } |
308 | ||
6d111134 TC |
309 | static void |
310 | relatime_changed_cb(void *arg, uint64_t newval) | |
311 | { | |
0037b49e | 312 | ((zfsvfs_t *)arg)->z_relatime = newval; |
6d111134 TC |
313 | } |
314 | ||
34dc7c2f BB |
315 | static void |
316 | xattr_changed_cb(void *arg, uint64_t newval) | |
317 | { | |
0037b49e | 318 | zfsvfs_t *zfsvfs = arg; |
34dc7c2f | 319 | |
82a37189 | 320 | if (newval == ZFS_XATTR_OFF) { |
0037b49e | 321 | zfsvfs->z_flags &= ~ZSB_XATTR; |
82a37189 | 322 | } else { |
0037b49e | 323 | zfsvfs->z_flags |= ZSB_XATTR; |
82a37189 BB |
324 | |
325 | if (newval == ZFS_XATTR_SA) | |
0037b49e | 326 | zfsvfs->z_xattr_sa = B_TRUE; |
82a37189 | 327 | else |
0037b49e | 328 | zfsvfs->z_xattr_sa = B_FALSE; |
82a37189 | 329 | } |
34dc7c2f BB |
330 | } |
331 | ||
023699cd MM |
332 | static void |
333 | acltype_changed_cb(void *arg, uint64_t newval) | |
334 | { | |
0037b49e | 335 | zfsvfs_t *zfsvfs = arg; |
023699cd MM |
336 | |
337 | switch (newval) { | |
338 | case ZFS_ACLTYPE_OFF: | |
0037b49e | 339 | zfsvfs->z_acl_type = ZFS_ACLTYPE_OFF; |
05805494 | 340 | zfsvfs->z_sb->s_flags &= ~SB_POSIXACL; |
023699cd MM |
341 | break; |
342 | case ZFS_ACLTYPE_POSIXACL: | |
b695c34e | 343 | #ifdef CONFIG_FS_POSIX_ACL |
0037b49e | 344 | zfsvfs->z_acl_type = ZFS_ACLTYPE_POSIXACL; |
05805494 | 345 | zfsvfs->z_sb->s_flags |= SB_POSIXACL; |
b695c34e | 346 | #else |
0037b49e | 347 | zfsvfs->z_acl_type = ZFS_ACLTYPE_OFF; |
05805494 | 348 | zfsvfs->z_sb->s_flags &= ~SB_POSIXACL; |
b695c34e | 349 | #endif /* CONFIG_FS_POSIX_ACL */ |
023699cd MM |
350 | break; |
351 | default: | |
352 | break; | |
353 | } | |
354 | } | |
355 | ||
34dc7c2f BB |
356 | static void |
357 | blksz_changed_cb(void *arg, uint64_t newval) | |
358 | { | |
0037b49e BB |
359 | zfsvfs_t *zfsvfs = arg; |
360 | ASSERT3U(newval, <=, spa_maxblocksize(dmu_objset_spa(zfsvfs->z_os))); | |
f1512ee6 MA |
361 | ASSERT3U(newval, >=, SPA_MINBLOCKSIZE); |
362 | ASSERT(ISP2(newval)); | |
34dc7c2f | 363 | |
0037b49e | 364 | zfsvfs->z_max_blksz = newval; |
34dc7c2f BB |
365 | } |
366 | ||
367 | static void | |
368 | readonly_changed_cb(void *arg, uint64_t newval) | |
369 | { | |
0037b49e BB |
370 | zfsvfs_t *zfsvfs = arg; |
371 | struct super_block *sb = zfsvfs->z_sb; | |
34dc7c2f | 372 | |
2cf7f52b BB |
373 | if (sb == NULL) |
374 | return; | |
375 | ||
376 | if (newval) | |
05805494 | 377 | sb->s_flags |= SB_RDONLY; |
2cf7f52b | 378 | else |
05805494 | 379 | sb->s_flags &= ~SB_RDONLY; |
34dc7c2f BB |
380 | } |
381 | ||
382 | static void | |
383 | devices_changed_cb(void *arg, uint64_t newval) | |
384 | { | |
34dc7c2f BB |
385 | } |
386 | ||
387 | static void | |
388 | setuid_changed_cb(void *arg, uint64_t newval) | |
389 | { | |
34dc7c2f BB |
390 | } |
391 | ||
392 | static void | |
393 | exec_changed_cb(void *arg, uint64_t newval) | |
394 | { | |
34dc7c2f BB |
395 | } |
396 | ||
34dc7c2f BB |
397 | static void |
398 | nbmand_changed_cb(void *arg, uint64_t newval) | |
399 | { | |
0037b49e BB |
400 | zfsvfs_t *zfsvfs = arg; |
401 | struct super_block *sb = zfsvfs->z_sb; | |
3558fd73 | 402 | |
2cf7f52b BB |
403 | if (sb == NULL) |
404 | return; | |
405 | ||
406 | if (newval == TRUE) | |
05805494 | 407 | sb->s_flags |= SB_MANDLOCK; |
2cf7f52b | 408 | else |
05805494 | 409 | sb->s_flags &= ~SB_MANDLOCK; |
34dc7c2f BB |
410 | } |
411 | ||
412 | static void | |
413 | snapdir_changed_cb(void *arg, uint64_t newval) | |
414 | { | |
0037b49e | 415 | ((zfsvfs_t *)arg)->z_show_ctldir = newval; |
34dc7c2f BB |
416 | } |
417 | ||
418 | static void | |
419 | vscan_changed_cb(void *arg, uint64_t newval) | |
420 | { | |
0037b49e | 421 | ((zfsvfs_t *)arg)->z_vscan = newval; |
34dc7c2f BB |
422 | } |
423 | ||
34dc7c2f BB |
424 | static void |
425 | acl_inherit_changed_cb(void *arg, uint64_t newval) | |
426 | { | |
0037b49e | 427 | ((zfsvfs_t *)arg)->z_acl_inherit = newval; |
34dc7c2f BB |
428 | } |
429 | ||
1c2555ef BB |
430 | static int |
431 | zfs_register_callbacks(vfs_t *vfsp) | |
34dc7c2f BB |
432 | { |
433 | struct dsl_dataset *ds = NULL; | |
1c2555ef BB |
434 | objset_t *os = NULL; |
435 | zfsvfs_t *zfsvfs = NULL; | |
34dc7c2f BB |
436 | int error = 0; |
437 | ||
1c2555ef BB |
438 | ASSERT(vfsp); |
439 | zfsvfs = vfsp->vfs_data; | |
0037b49e | 440 | ASSERT(zfsvfs); |
1c2555ef | 441 | os = zfsvfs->z_os; |
0282c413 BB |
442 | |
443 | /* | |
444 | * The act of registering our callbacks will destroy any mount | |
445 | * options we may have. In order to enable temporary overrides | |
446 | * of mount options, we stash away the current values and | |
447 | * restore them after we register the callbacks. | |
448 | */ | |
0037b49e | 449 | if (zfs_is_readonly(zfsvfs) || !spa_writeable(dmu_objset_spa(os))) { |
1c2555ef BB |
450 | vfsp->vfs_do_readonly = B_TRUE; |
451 | vfsp->vfs_readonly = B_TRUE; | |
0282c413 | 452 | } |
34dc7c2f BB |
453 | |
454 | /* | |
455 | * Register property callbacks. | |
456 | * | |
457 | * It would probably be fine to just check for i/o error from | |
458 | * the first prop_register(), but I guess I like to go | |
459 | * overboard... | |
460 | */ | |
461 | ds = dmu_objset_ds(os); | |
13fe0198 | 462 | dsl_pool_config_enter(dmu_objset_pool(os), FTAG); |
3558fd73 | 463 | error = dsl_prop_register(ds, |
0037b49e | 464 | zfs_prop_to_name(ZFS_PROP_ATIME), atime_changed_cb, zfsvfs); |
98fad862 | 465 | error = error ? error : dsl_prop_register(ds, |
0037b49e | 466 | zfs_prop_to_name(ZFS_PROP_RELATIME), relatime_changed_cb, zfsvfs); |
34dc7c2f | 467 | error = error ? error : dsl_prop_register(ds, |
0037b49e | 468 | zfs_prop_to_name(ZFS_PROP_XATTR), xattr_changed_cb, zfsvfs); |
34dc7c2f | 469 | error = error ? error : dsl_prop_register(ds, |
0037b49e | 470 | zfs_prop_to_name(ZFS_PROP_RECORDSIZE), blksz_changed_cb, zfsvfs); |
34dc7c2f | 471 | error = error ? error : dsl_prop_register(ds, |
0037b49e | 472 | zfs_prop_to_name(ZFS_PROP_READONLY), readonly_changed_cb, zfsvfs); |
34dc7c2f | 473 | error = error ? error : dsl_prop_register(ds, |
0037b49e | 474 | zfs_prop_to_name(ZFS_PROP_DEVICES), devices_changed_cb, zfsvfs); |
34dc7c2f | 475 | error = error ? error : dsl_prop_register(ds, |
0037b49e | 476 | zfs_prop_to_name(ZFS_PROP_SETUID), setuid_changed_cb, zfsvfs); |
34dc7c2f | 477 | error = error ? error : dsl_prop_register(ds, |
0037b49e | 478 | zfs_prop_to_name(ZFS_PROP_EXEC), exec_changed_cb, zfsvfs); |
34dc7c2f | 479 | error = error ? error : dsl_prop_register(ds, |
0037b49e | 480 | zfs_prop_to_name(ZFS_PROP_SNAPDIR), snapdir_changed_cb, zfsvfs); |
34dc7c2f | 481 | error = error ? error : dsl_prop_register(ds, |
0037b49e | 482 | zfs_prop_to_name(ZFS_PROP_ACLTYPE), acltype_changed_cb, zfsvfs); |
023699cd | 483 | error = error ? error : dsl_prop_register(ds, |
0037b49e BB |
484 | zfs_prop_to_name(ZFS_PROP_ACLINHERIT), acl_inherit_changed_cb, |
485 | zfsvfs); | |
34dc7c2f | 486 | error = error ? error : dsl_prop_register(ds, |
0037b49e | 487 | zfs_prop_to_name(ZFS_PROP_VSCAN), vscan_changed_cb, zfsvfs); |
2cf7f52b | 488 | error = error ? error : dsl_prop_register(ds, |
0037b49e | 489 | zfs_prop_to_name(ZFS_PROP_NBMAND), nbmand_changed_cb, zfsvfs); |
13fe0198 | 490 | dsl_pool_config_exit(dmu_objset_pool(os), FTAG); |
34dc7c2f BB |
491 | if (error) |
492 | goto unregister; | |
493 | ||
0282c413 BB |
494 | /* |
495 | * Invoke our callbacks to restore temporary mount options. | |
496 | */ | |
1c2555ef BB |
497 | if (vfsp->vfs_do_readonly) |
498 | readonly_changed_cb(zfsvfs, vfsp->vfs_readonly); | |
499 | if (vfsp->vfs_do_setuid) | |
500 | setuid_changed_cb(zfsvfs, vfsp->vfs_setuid); | |
501 | if (vfsp->vfs_do_exec) | |
502 | exec_changed_cb(zfsvfs, vfsp->vfs_exec); | |
503 | if (vfsp->vfs_do_devices) | |
504 | devices_changed_cb(zfsvfs, vfsp->vfs_devices); | |
505 | if (vfsp->vfs_do_xattr) | |
506 | xattr_changed_cb(zfsvfs, vfsp->vfs_xattr); | |
507 | if (vfsp->vfs_do_atime) | |
508 | atime_changed_cb(zfsvfs, vfsp->vfs_atime); | |
509 | if (vfsp->vfs_do_relatime) | |
510 | relatime_changed_cb(zfsvfs, vfsp->vfs_relatime); | |
511 | if (vfsp->vfs_do_nbmand) | |
512 | nbmand_changed_cb(zfsvfs, vfsp->vfs_nbmand); | |
c9ada6d5 | 513 | |
34dc7c2f BB |
514 | return (0); |
515 | ||
516 | unregister: | |
0037b49e | 517 | dsl_prop_unregister_all(ds, zfsvfs); |
3558fd73 | 518 | return (error); |
34dc7c2f BB |
519 | } |
520 | ||
428870ff BB |
521 | static int |
522 | zfs_space_delta_cb(dmu_object_type_t bonustype, void *data, | |
9c5167d1 | 523 | uint64_t *userp, uint64_t *groupp, uint64_t *projectp) |
9babb374 | 524 | { |
9c5167d1 NF |
525 | sa_hdr_phys_t sa; |
526 | sa_hdr_phys_t *sap = data; | |
527 | uint64_t flags; | |
528 | int hdrsize; | |
529 | boolean_t swap = B_FALSE; | |
530 | ||
428870ff BB |
531 | /* |
532 | * Is it a valid type of object to track? | |
533 | */ | |
534 | if (bonustype != DMU_OT_ZNODE && bonustype != DMU_OT_SA) | |
2e528b49 | 535 | return (SET_ERROR(ENOENT)); |
9babb374 | 536 | |
428870ff BB |
537 | /* |
538 | * If we have a NULL data pointer | |
539 | * then assume the id's aren't changing and | |
540 | * return EEXIST to the dmu to let it know to | |
541 | * use the same ids | |
542 | */ | |
543 | if (data == NULL) | |
2e528b49 | 544 | return (SET_ERROR(EEXIST)); |
9babb374 | 545 | |
428870ff | 546 | if (bonustype == DMU_OT_ZNODE) { |
a94addd9 | 547 | znode_phys_t *znp = data; |
428870ff BB |
548 | *userp = znp->zp_uid; |
549 | *groupp = znp->zp_gid; | |
9c5167d1 NF |
550 | *projectp = ZFS_DEFAULT_PROJID; |
551 | return (0); | |
552 | } | |
553 | ||
554 | if (sap->sa_magic == 0) { | |
555 | /* | |
556 | * This should only happen for newly created files | |
557 | * that haven't had the znode data filled in yet. | |
558 | */ | |
559 | *userp = 0; | |
560 | *groupp = 0; | |
561 | *projectp = ZFS_DEFAULT_PROJID; | |
562 | return (0); | |
563 | } | |
564 | ||
565 | sa = *sap; | |
566 | if (sa.sa_magic == BSWAP_32(SA_MAGIC)) { | |
567 | sa.sa_magic = SA_MAGIC; | |
568 | sa.sa_layout_info = BSWAP_16(sa.sa_layout_info); | |
569 | swap = B_TRUE; | |
9babb374 | 570 | } else { |
9c5167d1 NF |
571 | VERIFY3U(sa.sa_magic, ==, SA_MAGIC); |
572 | } | |
a94addd9 | 573 | |
9c5167d1 NF |
574 | hdrsize = sa_hdrsize(&sa); |
575 | VERIFY3U(hdrsize, >=, sizeof (sa_hdr_phys_t)); | |
576 | ||
577 | *userp = *((uint64_t *)((uintptr_t)data + hdrsize + SA_UID_OFFSET)); | |
578 | *groupp = *((uint64_t *)((uintptr_t)data + hdrsize + SA_GID_OFFSET)); | |
579 | flags = *((uint64_t *)((uintptr_t)data + hdrsize + SA_FLAGS_OFFSET)); | |
580 | if (swap) | |
581 | flags = BSWAP_64(flags); | |
582 | ||
583 | if (flags & ZFS_PROJID) | |
584 | *projectp = *((uint64_t *)((uintptr_t)data + hdrsize + | |
585 | SA_PROJID_OFFSET)); | |
586 | else | |
587 | *projectp = ZFS_DEFAULT_PROJID; | |
588 | ||
589 | if (swap) { | |
590 | *userp = BSWAP_64(*userp); | |
591 | *groupp = BSWAP_64(*groupp); | |
592 | *projectp = BSWAP_64(*projectp); | |
9babb374 | 593 | } |
13fe0198 | 594 | return (0); |
9babb374 BB |
595 | } |
596 | ||
597 | static void | |
0037b49e | 598 | fuidstr_to_sid(zfsvfs_t *zfsvfs, const char *fuidstr, |
9babb374 BB |
599 | char *domainbuf, int buflen, uid_t *ridp) |
600 | { | |
9babb374 BB |
601 | uint64_t fuid; |
602 | const char *domain; | |
603 | ||
e19572e4 | 604 | fuid = zfs_strtonum(fuidstr, NULL); |
9babb374 | 605 | |
0037b49e | 606 | domain = zfs_fuid_find_by_idx(zfsvfs, FUID_INDEX(fuid)); |
9babb374 BB |
607 | if (domain) |
608 | (void) strlcpy(domainbuf, domain, buflen); | |
609 | else | |
610 | domainbuf[0] = '\0'; | |
611 | *ridp = FUID_RID(fuid); | |
612 | } | |
613 | ||
614 | static uint64_t | |
0037b49e | 615 | zfs_userquota_prop_to_obj(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type) |
9babb374 BB |
616 | { |
617 | switch (type) { | |
618 | case ZFS_PROP_USERUSED: | |
1de321e6 | 619 | case ZFS_PROP_USEROBJUSED: |
9babb374 BB |
620 | return (DMU_USERUSED_OBJECT); |
621 | case ZFS_PROP_GROUPUSED: | |
1de321e6 | 622 | case ZFS_PROP_GROUPOBJUSED: |
9babb374 | 623 | return (DMU_GROUPUSED_OBJECT); |
9c5167d1 NF |
624 | case ZFS_PROP_PROJECTUSED: |
625 | case ZFS_PROP_PROJECTOBJUSED: | |
626 | return (DMU_PROJECTUSED_OBJECT); | |
9babb374 | 627 | case ZFS_PROP_USERQUOTA: |
0037b49e | 628 | return (zfsvfs->z_userquota_obj); |
9babb374 | 629 | case ZFS_PROP_GROUPQUOTA: |
0037b49e | 630 | return (zfsvfs->z_groupquota_obj); |
1de321e6 | 631 | case ZFS_PROP_USEROBJQUOTA: |
0037b49e | 632 | return (zfsvfs->z_userobjquota_obj); |
1de321e6 | 633 | case ZFS_PROP_GROUPOBJQUOTA: |
0037b49e | 634 | return (zfsvfs->z_groupobjquota_obj); |
9c5167d1 NF |
635 | case ZFS_PROP_PROJECTQUOTA: |
636 | return (zfsvfs->z_projectquota_obj); | |
637 | case ZFS_PROP_PROJECTOBJQUOTA: | |
638 | return (zfsvfs->z_projectobjquota_obj); | |
149e873a | 639 | default: |
1de321e6 | 640 | return (ZFS_NO_OBJECT); |
9babb374 | 641 | } |
9babb374 BB |
642 | } |
643 | ||
644 | int | |
0037b49e | 645 | zfs_userspace_many(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type, |
9babb374 BB |
646 | uint64_t *cookiep, void *vbuf, uint64_t *bufsizep) |
647 | { | |
648 | int error; | |
649 | zap_cursor_t zc; | |
650 | zap_attribute_t za; | |
651 | zfs_useracct_t *buf = vbuf; | |
652 | uint64_t obj; | |
1de321e6 | 653 | int offset = 0; |
9babb374 | 654 | |
0037b49e | 655 | if (!dmu_objset_userspace_present(zfsvfs->z_os)) |
2e528b49 | 656 | return (SET_ERROR(ENOTSUP)); |
9babb374 | 657 | |
9c5167d1 NF |
658 | if ((type == ZFS_PROP_PROJECTQUOTA || type == ZFS_PROP_PROJECTUSED || |
659 | type == ZFS_PROP_PROJECTOBJQUOTA || | |
660 | type == ZFS_PROP_PROJECTOBJUSED) && | |
661 | !dmu_objset_projectquota_present(zfsvfs->z_os)) | |
662 | return (SET_ERROR(ENOTSUP)); | |
663 | ||
1de321e6 | 664 | if ((type == ZFS_PROP_USEROBJUSED || type == ZFS_PROP_GROUPOBJUSED || |
9c5167d1 NF |
665 | type == ZFS_PROP_USEROBJQUOTA || type == ZFS_PROP_GROUPOBJQUOTA || |
666 | type == ZFS_PROP_PROJECTOBJUSED || | |
667 | type == ZFS_PROP_PROJECTOBJQUOTA) && | |
0037b49e | 668 | !dmu_objset_userobjspace_present(zfsvfs->z_os)) |
1de321e6 JX |
669 | return (SET_ERROR(ENOTSUP)); |
670 | ||
0037b49e | 671 | obj = zfs_userquota_prop_to_obj(zfsvfs, type); |
1de321e6 | 672 | if (obj == ZFS_NO_OBJECT) { |
9babb374 BB |
673 | *bufsizep = 0; |
674 | return (0); | |
675 | } | |
676 | ||
9c5167d1 NF |
677 | if (type == ZFS_PROP_USEROBJUSED || type == ZFS_PROP_GROUPOBJUSED || |
678 | type == ZFS_PROP_PROJECTOBJUSED) | |
1de321e6 JX |
679 | offset = DMU_OBJACCT_PREFIX_LEN; |
680 | ||
0037b49e | 681 | for (zap_cursor_init_serialized(&zc, zfsvfs->z_os, obj, *cookiep); |
9babb374 BB |
682 | (error = zap_cursor_retrieve(&zc, &za)) == 0; |
683 | zap_cursor_advance(&zc)) { | |
684 | if ((uintptr_t)buf - (uintptr_t)vbuf + sizeof (zfs_useracct_t) > | |
685 | *bufsizep) | |
686 | break; | |
687 | ||
1de321e6 JX |
688 | /* |
689 | * skip object quota (with zap name prefix DMU_OBJACCT_PREFIX) | |
690 | * when dealing with block quota and vice versa. | |
691 | */ | |
692 | if ((offset > 0) != (strncmp(za.za_name, DMU_OBJACCT_PREFIX, | |
693 | DMU_OBJACCT_PREFIX_LEN) == 0)) | |
694 | continue; | |
695 | ||
0037b49e | 696 | fuidstr_to_sid(zfsvfs, za.za_name + offset, |
9babb374 BB |
697 | buf->zu_domain, sizeof (buf->zu_domain), &buf->zu_rid); |
698 | ||
699 | buf->zu_space = za.za_first_integer; | |
700 | buf++; | |
701 | } | |
702 | if (error == ENOENT) | |
703 | error = 0; | |
704 | ||
705 | ASSERT3U((uintptr_t)buf - (uintptr_t)vbuf, <=, *bufsizep); | |
706 | *bufsizep = (uintptr_t)buf - (uintptr_t)vbuf; | |
707 | *cookiep = zap_cursor_serialize(&zc); | |
708 | zap_cursor_fini(&zc); | |
709 | return (error); | |
710 | } | |
711 | ||
712 | /* | |
713 | * buf must be big enough (eg, 32 bytes) | |
714 | */ | |
715 | static int | |
0037b49e | 716 | id_to_fuidstr(zfsvfs_t *zfsvfs, const char *domain, uid_t rid, |
9babb374 BB |
717 | char *buf, boolean_t addok) |
718 | { | |
719 | uint64_t fuid; | |
720 | int domainid = 0; | |
721 | ||
722 | if (domain && domain[0]) { | |
0037b49e | 723 | domainid = zfs_fuid_find_by_domain(zfsvfs, domain, NULL, addok); |
9babb374 | 724 | if (domainid == -1) |
2e528b49 | 725 | return (SET_ERROR(ENOENT)); |
9babb374 BB |
726 | } |
727 | fuid = FUID_ENCODE(domainid, rid); | |
728 | (void) sprintf(buf, "%llx", (longlong_t)fuid); | |
729 | return (0); | |
730 | } | |
731 | ||
732 | int | |
0037b49e | 733 | zfs_userspace_one(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type, |
9babb374 BB |
734 | const char *domain, uint64_t rid, uint64_t *valp) |
735 | { | |
1de321e6 JX |
736 | char buf[20 + DMU_OBJACCT_PREFIX_LEN]; |
737 | int offset = 0; | |
9babb374 BB |
738 | int err; |
739 | uint64_t obj; | |
740 | ||
741 | *valp = 0; | |
742 | ||
0037b49e | 743 | if (!dmu_objset_userspace_present(zfsvfs->z_os)) |
2e528b49 | 744 | return (SET_ERROR(ENOTSUP)); |
9babb374 | 745 | |
1de321e6 | 746 | if ((type == ZFS_PROP_USEROBJUSED || type == ZFS_PROP_GROUPOBJUSED || |
9c5167d1 NF |
747 | type == ZFS_PROP_USEROBJQUOTA || type == ZFS_PROP_GROUPOBJQUOTA || |
748 | type == ZFS_PROP_PROJECTOBJUSED || | |
749 | type == ZFS_PROP_PROJECTOBJQUOTA) && | |
0037b49e | 750 | !dmu_objset_userobjspace_present(zfsvfs->z_os)) |
1de321e6 JX |
751 | return (SET_ERROR(ENOTSUP)); |
752 | ||
9c5167d1 NF |
753 | if (type == ZFS_PROP_PROJECTQUOTA || type == ZFS_PROP_PROJECTUSED || |
754 | type == ZFS_PROP_PROJECTOBJQUOTA || | |
755 | type == ZFS_PROP_PROJECTOBJUSED) { | |
756 | if (!dmu_objset_projectquota_present(zfsvfs->z_os)) | |
757 | return (SET_ERROR(ENOTSUP)); | |
758 | if (!zpl_is_valid_projid(rid)) | |
759 | return (SET_ERROR(EINVAL)); | |
760 | } | |
761 | ||
0037b49e | 762 | obj = zfs_userquota_prop_to_obj(zfsvfs, type); |
1de321e6 | 763 | if (obj == ZFS_NO_OBJECT) |
9babb374 BB |
764 | return (0); |
765 | ||
9c5167d1 NF |
766 | if (type == ZFS_PROP_USEROBJUSED || type == ZFS_PROP_GROUPOBJUSED || |
767 | type == ZFS_PROP_PROJECTOBJUSED) { | |
ed15d544 | 768 | strlcpy(buf, DMU_OBJACCT_PREFIX, DMU_OBJACCT_PREFIX_LEN + 1); |
1de321e6 JX |
769 | offset = DMU_OBJACCT_PREFIX_LEN; |
770 | } | |
771 | ||
0037b49e | 772 | err = id_to_fuidstr(zfsvfs, domain, rid, buf + offset, B_FALSE); |
9babb374 BB |
773 | if (err) |
774 | return (err); | |
775 | ||
0037b49e | 776 | err = zap_lookup(zfsvfs->z_os, obj, buf, 8, 1, valp); |
9babb374 BB |
777 | if (err == ENOENT) |
778 | err = 0; | |
779 | return (err); | |
780 | } | |
781 | ||
782 | int | |
0037b49e | 783 | zfs_set_userquota(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type, |
9babb374 BB |
784 | const char *domain, uint64_t rid, uint64_t quota) |
785 | { | |
786 | char buf[32]; | |
787 | int err; | |
788 | dmu_tx_t *tx; | |
789 | uint64_t *objp; | |
790 | boolean_t fuid_dirtied; | |
791 | ||
0037b49e | 792 | if (zfsvfs->z_version < ZPL_VERSION_USERSPACE) |
2e528b49 | 793 | return (SET_ERROR(ENOTSUP)); |
9babb374 | 794 | |
1de321e6 JX |
795 | switch (type) { |
796 | case ZFS_PROP_USERQUOTA: | |
0037b49e | 797 | objp = &zfsvfs->z_userquota_obj; |
1de321e6 JX |
798 | break; |
799 | case ZFS_PROP_GROUPQUOTA: | |
0037b49e | 800 | objp = &zfsvfs->z_groupquota_obj; |
1de321e6 JX |
801 | break; |
802 | case ZFS_PROP_USEROBJQUOTA: | |
0037b49e | 803 | objp = &zfsvfs->z_userobjquota_obj; |
1de321e6 JX |
804 | break; |
805 | case ZFS_PROP_GROUPOBJQUOTA: | |
0037b49e | 806 | objp = &zfsvfs->z_groupobjquota_obj; |
1de321e6 | 807 | break; |
9c5167d1 NF |
808 | case ZFS_PROP_PROJECTQUOTA: |
809 | if (!dmu_objset_projectquota_enabled(zfsvfs->z_os)) | |
810 | return (SET_ERROR(ENOTSUP)); | |
811 | if (!zpl_is_valid_projid(rid)) | |
812 | return (SET_ERROR(EINVAL)); | |
813 | ||
814 | objp = &zfsvfs->z_projectquota_obj; | |
815 | break; | |
816 | case ZFS_PROP_PROJECTOBJQUOTA: | |
817 | if (!dmu_objset_projectquota_enabled(zfsvfs->z_os)) | |
818 | return (SET_ERROR(ENOTSUP)); | |
819 | if (!zpl_is_valid_projid(rid)) | |
820 | return (SET_ERROR(EINVAL)); | |
821 | ||
822 | objp = &zfsvfs->z_projectobjquota_obj; | |
823 | break; | |
1de321e6 JX |
824 | default: |
825 | return (SET_ERROR(EINVAL)); | |
826 | } | |
9babb374 | 827 | |
0037b49e | 828 | err = id_to_fuidstr(zfsvfs, domain, rid, buf, B_TRUE); |
9babb374 BB |
829 | if (err) |
830 | return (err); | |
0037b49e | 831 | fuid_dirtied = zfsvfs->z_fuid_dirty; |
9babb374 | 832 | |
0037b49e | 833 | tx = dmu_tx_create(zfsvfs->z_os); |
9babb374 BB |
834 | dmu_tx_hold_zap(tx, *objp ? *objp : DMU_NEW_OBJECT, B_TRUE, NULL); |
835 | if (*objp == 0) { | |
836 | dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, B_TRUE, | |
837 | zfs_userquota_prop_prefixes[type]); | |
838 | } | |
839 | if (fuid_dirtied) | |
0037b49e | 840 | zfs_fuid_txhold(zfsvfs, tx); |
9babb374 BB |
841 | err = dmu_tx_assign(tx, TXG_WAIT); |
842 | if (err) { | |
843 | dmu_tx_abort(tx); | |
844 | return (err); | |
845 | } | |
846 | ||
0037b49e | 847 | mutex_enter(&zfsvfs->z_lock); |
9babb374 | 848 | if (*objp == 0) { |
0037b49e | 849 | *objp = zap_create(zfsvfs->z_os, DMU_OT_USERGROUP_QUOTA, |
9babb374 | 850 | DMU_OT_NONE, 0, tx); |
0037b49e | 851 | VERIFY(0 == zap_add(zfsvfs->z_os, MASTER_NODE_OBJ, |
9babb374 BB |
852 | zfs_userquota_prop_prefixes[type], 8, 1, objp, tx)); |
853 | } | |
0037b49e | 854 | mutex_exit(&zfsvfs->z_lock); |
9babb374 BB |
855 | |
856 | if (quota == 0) { | |
0037b49e | 857 | err = zap_remove(zfsvfs->z_os, *objp, buf, tx); |
9babb374 BB |
858 | if (err == ENOENT) |
859 | err = 0; | |
860 | } else { | |
0037b49e | 861 | err = zap_update(zfsvfs->z_os, *objp, buf, 8, 1, "a, tx); |
9babb374 BB |
862 | } |
863 | ASSERT(err == 0); | |
864 | if (fuid_dirtied) | |
0037b49e | 865 | zfs_fuid_sync(zfsvfs, tx); |
9babb374 BB |
866 | dmu_tx_commit(tx); |
867 | return (err); | |
868 | } | |
869 | ||
1de321e6 | 870 | boolean_t |
9c5167d1 | 871 | zfs_id_overobjquota(zfsvfs_t *zfsvfs, uint64_t usedobj, uint64_t id) |
1de321e6 JX |
872 | { |
873 | char buf[20 + DMU_OBJACCT_PREFIX_LEN]; | |
9c5167d1 | 874 | uint64_t used, quota, quotaobj; |
1de321e6 JX |
875 | int err; |
876 | ||
0037b49e | 877 | if (!dmu_objset_userobjspace_present(zfsvfs->z_os)) { |
c0daec32 AB |
878 | if (dmu_objset_userobjspace_upgradable(zfsvfs->z_os)) { |
879 | dsl_pool_config_enter( | |
880 | dmu_objset_pool(zfsvfs->z_os), FTAG); | |
9c5167d1 | 881 | dmu_objset_id_quota_upgrade(zfsvfs->z_os); |
c0daec32 AB |
882 | dsl_pool_config_exit( |
883 | dmu_objset_pool(zfsvfs->z_os), FTAG); | |
884 | } | |
1de321e6 JX |
885 | return (B_FALSE); |
886 | } | |
887 | ||
9c5167d1 NF |
888 | if (usedobj == DMU_PROJECTUSED_OBJECT) { |
889 | if (!dmu_objset_projectquota_present(zfsvfs->z_os)) { | |
890 | if (dmu_objset_projectquota_upgradable(zfsvfs->z_os)) { | |
891 | dsl_pool_config_enter( | |
892 | dmu_objset_pool(zfsvfs->z_os), FTAG); | |
893 | dmu_objset_id_quota_upgrade(zfsvfs->z_os); | |
894 | dsl_pool_config_exit( | |
895 | dmu_objset_pool(zfsvfs->z_os), FTAG); | |
896 | } | |
897 | return (B_FALSE); | |
898 | } | |
899 | quotaobj = zfsvfs->z_projectobjquota_obj; | |
900 | } else if (usedobj == DMU_USERUSED_OBJECT) { | |
901 | quotaobj = zfsvfs->z_userobjquota_obj; | |
902 | } else if (usedobj == DMU_GROUPUSED_OBJECT) { | |
903 | quotaobj = zfsvfs->z_groupobjquota_obj; | |
904 | } else { | |
905 | return (B_FALSE); | |
906 | } | |
0037b49e | 907 | if (quotaobj == 0 || zfsvfs->z_replay) |
1de321e6 JX |
908 | return (B_FALSE); |
909 | ||
9c5167d1 | 910 | (void) sprintf(buf, "%llx", (longlong_t)id); |
0037b49e | 911 | err = zap_lookup(zfsvfs->z_os, quotaobj, buf, 8, 1, "a); |
1de321e6 JX |
912 | if (err != 0) |
913 | return (B_FALSE); | |
914 | ||
9c5167d1 | 915 | (void) sprintf(buf, DMU_OBJACCT_PREFIX "%llx", (longlong_t)id); |
0037b49e | 916 | err = zap_lookup(zfsvfs->z_os, usedobj, buf, 8, 1, &used); |
1de321e6 JX |
917 | if (err != 0) |
918 | return (B_FALSE); | |
919 | return (used >= quota); | |
920 | } | |
921 | ||
9babb374 | 922 | boolean_t |
9c5167d1 | 923 | zfs_id_overblockquota(zfsvfs_t *zfsvfs, uint64_t usedobj, uint64_t id) |
9babb374 | 924 | { |
1de321e6 | 925 | char buf[20]; |
9c5167d1 | 926 | uint64_t used, quota, quotaobj; |
9babb374 BB |
927 | int err; |
928 | ||
9c5167d1 NF |
929 | if (usedobj == DMU_PROJECTUSED_OBJECT) { |
930 | if (!dmu_objset_projectquota_present(zfsvfs->z_os)) { | |
931 | if (dmu_objset_projectquota_upgradable(zfsvfs->z_os)) { | |
932 | dsl_pool_config_enter( | |
933 | dmu_objset_pool(zfsvfs->z_os), FTAG); | |
934 | dmu_objset_id_quota_upgrade(zfsvfs->z_os); | |
935 | dsl_pool_config_exit( | |
936 | dmu_objset_pool(zfsvfs->z_os), FTAG); | |
937 | } | |
938 | return (B_FALSE); | |
939 | } | |
940 | quotaobj = zfsvfs->z_projectquota_obj; | |
941 | } else if (usedobj == DMU_USERUSED_OBJECT) { | |
942 | quotaobj = zfsvfs->z_userquota_obj; | |
943 | } else if (usedobj == DMU_GROUPUSED_OBJECT) { | |
944 | quotaobj = zfsvfs->z_groupquota_obj; | |
945 | } else { | |
946 | return (B_FALSE); | |
947 | } | |
0037b49e | 948 | if (quotaobj == 0 || zfsvfs->z_replay) |
9babb374 BB |
949 | return (B_FALSE); |
950 | ||
9c5167d1 | 951 | (void) sprintf(buf, "%llx", (longlong_t)id); |
0037b49e | 952 | err = zap_lookup(zfsvfs->z_os, quotaobj, buf, 8, 1, "a); |
9babb374 BB |
953 | if (err != 0) |
954 | return (B_FALSE); | |
955 | ||
0037b49e | 956 | err = zap_lookup(zfsvfs->z_os, usedobj, buf, 8, 1, &used); |
9babb374 BB |
957 | if (err != 0) |
958 | return (B_FALSE); | |
959 | return (used >= quota); | |
960 | } | |
961 | ||
428870ff | 962 | boolean_t |
9c5167d1 | 963 | zfs_id_overquota(zfsvfs_t *zfsvfs, uint64_t usedobj, uint64_t id) |
428870ff | 964 | { |
9c5167d1 NF |
965 | return (zfs_id_overblockquota(zfsvfs, usedobj, id) || |
966 | zfs_id_overobjquota(zfsvfs, usedobj, id)); | |
428870ff BB |
967 | } |
968 | ||
8614ddf9 MA |
969 | /* |
970 | * Associate this zfsvfs with the given objset, which must be owned. | |
971 | * This will cache a bunch of on-disk state from the objset in the | |
972 | * zfsvfs. | |
973 | */ | |
974 | static int | |
975 | zfsvfs_init(zfsvfs_t *zfsvfs, objset_t *os) | |
9babb374 | 976 | { |
8614ddf9 MA |
977 | int error; |
978 | uint64_t val; | |
0282c413 | 979 | |
0037b49e BB |
980 | zfsvfs->z_max_blksz = SPA_OLD_MAXBLOCKSIZE; |
981 | zfsvfs->z_show_ctldir = ZFS_SNAPDIR_VISIBLE; | |
982 | zfsvfs->z_os = os; | |
9babb374 | 983 | |
0037b49e | 984 | error = zfs_get_zplprop(os, ZFS_PROP_VERSION, &zfsvfs->z_version); |
8614ddf9 MA |
985 | if (error != 0) |
986 | return (error); | |
987 | if (zfsvfs->z_version > | |
988 | zfs_zpl_version_map(spa_version(dmu_objset_spa(os)))) { | |
989 | (void) printk("Can't mount a version %lld file system " | |
990 | "on a version %lld pool\n. Pool must be upgraded to mount " | |
991 | "this file system.", (u_longlong_t)zfsvfs->z_version, | |
992 | (u_longlong_t)spa_version(dmu_objset_spa(os))); | |
993 | return (SET_ERROR(ENOTSUP)); | |
9babb374 | 994 | } |
8614ddf9 MA |
995 | error = zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &val); |
996 | if (error != 0) | |
997 | return (error); | |
998 | zfsvfs->z_norm = (int)val; | |
9babb374 | 999 | |
8614ddf9 MA |
1000 | error = zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &val); |
1001 | if (error != 0) | |
1002 | return (error); | |
1003 | zfsvfs->z_utf8 = (val != 0); | |
9babb374 | 1004 | |
8614ddf9 MA |
1005 | error = zfs_get_zplprop(os, ZFS_PROP_CASE, &val); |
1006 | if (error != 0) | |
1007 | return (error); | |
1008 | zfsvfs->z_case = (uint_t)val; | |
9babb374 | 1009 | |
8614ddf9 MA |
1010 | if ((error = zfs_get_zplprop(os, ZFS_PROP_ACLTYPE, &val)) != 0) |
1011 | return (error); | |
1012 | zfsvfs->z_acl_type = (uint_t)val; | |
023699cd | 1013 | |
9babb374 BB |
1014 | /* |
1015 | * Fold case on file systems that are always or sometimes case | |
1016 | * insensitive. | |
1017 | */ | |
0037b49e BB |
1018 | if (zfsvfs->z_case == ZFS_CASE_INSENSITIVE || |
1019 | zfsvfs->z_case == ZFS_CASE_MIXED) | |
1020 | zfsvfs->z_norm |= U8_TEXTPREP_TOUPPER; | |
9babb374 | 1021 | |
0037b49e BB |
1022 | zfsvfs->z_use_fuids = USE_FUIDS(zfsvfs->z_version, zfsvfs->z_os); |
1023 | zfsvfs->z_use_sa = USE_SA(zfsvfs->z_version, zfsvfs->z_os); | |
428870ff | 1024 | |
8614ddf9 | 1025 | uint64_t sa_obj = 0; |
0037b49e | 1026 | if (zfsvfs->z_use_sa) { |
428870ff BB |
1027 | /* should either have both of these objects or none */ |
1028 | error = zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS, 8, 1, | |
1029 | &sa_obj); | |
8614ddf9 MA |
1030 | if (error != 0) |
1031 | return (error); | |
82a37189 | 1032 | |
8614ddf9 MA |
1033 | error = zfs_get_zplprop(os, ZFS_PROP_XATTR, &val); |
1034 | if ((error == 0) && (val == ZFS_XATTR_SA)) | |
0037b49e | 1035 | zfsvfs->z_xattr_sa = B_TRUE; |
428870ff BB |
1036 | } |
1037 | ||
9babb374 | 1038 | error = zap_lookup(os, MASTER_NODE_OBJ, ZFS_ROOT_OBJ, 8, 1, |
0037b49e | 1039 | &zfsvfs->z_root); |
8614ddf9 MA |
1040 | if (error != 0) |
1041 | return (error); | |
0037b49e | 1042 | ASSERT(zfsvfs->z_root != 0); |
9babb374 BB |
1043 | |
1044 | error = zap_lookup(os, MASTER_NODE_OBJ, ZFS_UNLINKED_SET, 8, 1, | |
0037b49e | 1045 | &zfsvfs->z_unlinkedobj); |
8614ddf9 MA |
1046 | if (error != 0) |
1047 | return (error); | |
9babb374 BB |
1048 | |
1049 | error = zap_lookup(os, MASTER_NODE_OBJ, | |
1050 | zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA], | |
0037b49e | 1051 | 8, 1, &zfsvfs->z_userquota_obj); |
8614ddf9 MA |
1052 | if (error == ENOENT) |
1053 | zfsvfs->z_userquota_obj = 0; | |
1054 | else if (error != 0) | |
1055 | return (error); | |
9babb374 BB |
1056 | |
1057 | error = zap_lookup(os, MASTER_NODE_OBJ, | |
1058 | zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA], | |
0037b49e | 1059 | 8, 1, &zfsvfs->z_groupquota_obj); |
8614ddf9 MA |
1060 | if (error == ENOENT) |
1061 | zfsvfs->z_groupquota_obj = 0; | |
1062 | else if (error != 0) | |
1063 | return (error); | |
9babb374 | 1064 | |
9c5167d1 NF |
1065 | error = zap_lookup(os, MASTER_NODE_OBJ, |
1066 | zfs_userquota_prop_prefixes[ZFS_PROP_PROJECTQUOTA], | |
1067 | 8, 1, &zfsvfs->z_projectquota_obj); | |
1068 | if (error == ENOENT) | |
1069 | zfsvfs->z_projectquota_obj = 0; | |
1070 | else if (error != 0) | |
1071 | return (error); | |
1072 | ||
1de321e6 JX |
1073 | error = zap_lookup(os, MASTER_NODE_OBJ, |
1074 | zfs_userquota_prop_prefixes[ZFS_PROP_USEROBJQUOTA], | |
0037b49e | 1075 | 8, 1, &zfsvfs->z_userobjquota_obj); |
8614ddf9 MA |
1076 | if (error == ENOENT) |
1077 | zfsvfs->z_userobjquota_obj = 0; | |
1078 | else if (error != 0) | |
1079 | return (error); | |
1de321e6 JX |
1080 | |
1081 | error = zap_lookup(os, MASTER_NODE_OBJ, | |
1082 | zfs_userquota_prop_prefixes[ZFS_PROP_GROUPOBJQUOTA], | |
0037b49e | 1083 | 8, 1, &zfsvfs->z_groupobjquota_obj); |
8614ddf9 MA |
1084 | if (error == ENOENT) |
1085 | zfsvfs->z_groupobjquota_obj = 0; | |
1086 | else if (error != 0) | |
1087 | return (error); | |
1de321e6 | 1088 | |
9c5167d1 NF |
1089 | error = zap_lookup(os, MASTER_NODE_OBJ, |
1090 | zfs_userquota_prop_prefixes[ZFS_PROP_PROJECTOBJQUOTA], | |
1091 | 8, 1, &zfsvfs->z_projectobjquota_obj); | |
1092 | if (error == ENOENT) | |
1093 | zfsvfs->z_projectobjquota_obj = 0; | |
1094 | else if (error != 0) | |
1095 | return (error); | |
1096 | ||
9babb374 | 1097 | error = zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES, 8, 1, |
0037b49e | 1098 | &zfsvfs->z_fuid_obj); |
8614ddf9 MA |
1099 | if (error == ENOENT) |
1100 | zfsvfs->z_fuid_obj = 0; | |
1101 | else if (error != 0) | |
1102 | return (error); | |
9babb374 BB |
1103 | |
1104 | error = zap_lookup(os, MASTER_NODE_OBJ, ZFS_SHARES_DIR, 8, 1, | |
0037b49e | 1105 | &zfsvfs->z_shares_dir); |
8614ddf9 MA |
1106 | if (error == ENOENT) |
1107 | zfsvfs->z_shares_dir = 0; | |
1108 | else if (error != 0) | |
1109 | return (error); | |
1110 | ||
04a3b079 TC |
1111 | error = sa_setup(os, sa_obj, zfs_attr_table, ZPL_END, |
1112 | &zfsvfs->z_attr_table); | |
1113 | if (error != 0) | |
1114 | return (error); | |
1115 | ||
1116 | if (zfsvfs->z_version >= ZPL_VERSION_SA) | |
1117 | sa_register_update_callback(os, zfs_sa_upgrade); | |
1118 | ||
8614ddf9 MA |
1119 | return (0); |
1120 | } | |
1121 | ||
1122 | int | |
163a8c28 | 1123 | zfsvfs_create(const char *osname, boolean_t readonly, zfsvfs_t **zfvp) |
8614ddf9 MA |
1124 | { |
1125 | objset_t *os; | |
1126 | zfsvfs_t *zfsvfs; | |
1127 | int error; | |
163a8c28 | 1128 | boolean_t ro = (readonly || (strchr(osname, '@') != NULL)); |
8614ddf9 MA |
1129 | |
1130 | zfsvfs = kmem_zalloc(sizeof (zfsvfs_t), KM_SLEEP); | |
1131 | ||
163a8c28 | 1132 | error = dmu_objset_own(osname, DMU_OST_ZFS, ro, B_TRUE, zfsvfs, &os); |
d99a0153 | 1133 | if (error != 0) { |
8614ddf9 MA |
1134 | kmem_free(zfsvfs, sizeof (zfsvfs_t)); |
1135 | return (error); | |
1136 | } | |
1137 | ||
d99a0153 CW |
1138 | error = zfsvfs_create_impl(zfvp, zfsvfs, os); |
1139 | if (error != 0) { | |
1140 | dmu_objset_disown(os, B_TRUE, zfsvfs); | |
1141 | } | |
1142 | return (error); | |
1143 | } | |
1144 | ||
04a3b079 TC |
1145 | |
1146 | /* | |
1147 | * Note: zfsvfs is assumed to be malloc'd, and will be freed by this function | |
1148 | * on a failure. Do not pass in a statically allocated zfsvfs. | |
1149 | */ | |
d99a0153 CW |
1150 | int |
1151 | zfsvfs_create_impl(zfsvfs_t **zfvp, zfsvfs_t *zfsvfs, objset_t *os) | |
1152 | { | |
1153 | int error; | |
1154 | ||
8614ddf9 MA |
1155 | zfsvfs->z_vfs = NULL; |
1156 | zfsvfs->z_sb = NULL; | |
1157 | zfsvfs->z_parent = zfsvfs; | |
9babb374 | 1158 | |
0037b49e BB |
1159 | mutex_init(&zfsvfs->z_znodes_lock, NULL, MUTEX_DEFAULT, NULL); |
1160 | mutex_init(&zfsvfs->z_lock, NULL, MUTEX_DEFAULT, NULL); | |
1161 | list_create(&zfsvfs->z_all_znodes, sizeof (znode_t), | |
9babb374 | 1162 | offsetof(znode_t, z_link_node)); |
0037b49e BB |
1163 | rrm_init(&zfsvfs->z_teardown_lock, B_FALSE); |
1164 | rw_init(&zfsvfs->z_teardown_inactive_lock, NULL, RW_DEFAULT, NULL); | |
1165 | rw_init(&zfsvfs->z_fuid_lock, NULL, RW_DEFAULT, NULL); | |
d07b7c7f | 1166 | |
8614ddf9 MA |
1167 | int size = MIN(1 << (highbit64(zfs_object_mutex_size) - 1), |
1168 | ZFS_OBJ_MTX_MAX); | |
0037b49e BB |
1169 | zfsvfs->z_hold_size = size; |
1170 | zfsvfs->z_hold_trees = vmem_zalloc(sizeof (avl_tree_t) * size, | |
1171 | KM_SLEEP); | |
1172 | zfsvfs->z_hold_locks = vmem_zalloc(sizeof (kmutex_t) * size, KM_SLEEP); | |
8614ddf9 | 1173 | for (int i = 0; i != size; i++) { |
0037b49e | 1174 | avl_create(&zfsvfs->z_hold_trees[i], zfs_znode_hold_compare, |
c96c36fa | 1175 | sizeof (znode_hold_t), offsetof(znode_hold_t, zh_node)); |
0037b49e | 1176 | mutex_init(&zfsvfs->z_hold_locks[i], NULL, MUTEX_DEFAULT, NULL); |
c96c36fa | 1177 | } |
9babb374 | 1178 | |
8614ddf9 MA |
1179 | error = zfsvfs_init(zfsvfs, os); |
1180 | if (error != 0) { | |
8614ddf9 | 1181 | *zfvp = NULL; |
04a3b079 | 1182 | zfsvfs_free(zfsvfs); |
8614ddf9 MA |
1183 | return (error); |
1184 | } | |
1185 | ||
dcec0a12 AP |
1186 | zfsvfs->z_drain_task = TASKQID_INVALID; |
1187 | zfsvfs->z_draining = B_FALSE; | |
1188 | zfsvfs->z_drain_cancel = B_TRUE; | |
1189 | ||
0037b49e | 1190 | *zfvp = zfsvfs; |
9babb374 | 1191 | return (0); |
9babb374 BB |
1192 | } |
1193 | ||
8614ddf9 | 1194 | static int |
f298b24d | 1195 | zfsvfs_setup(zfsvfs_t *zfsvfs, boolean_t mounting) |
34dc7c2f | 1196 | { |
34dc7c2f | 1197 | int error; |
ae76f45c TC |
1198 | boolean_t readonly = zfs_is_readonly(zfsvfs); |
1199 | ||
1c2555ef | 1200 | error = zfs_register_callbacks(zfsvfs->z_vfs); |
34dc7c2f BB |
1201 | if (error) |
1202 | return (error); | |
1203 | ||
0037b49e | 1204 | zfsvfs->z_log = zil_open(zfsvfs->z_os, zfs_get_data); |
9babb374 | 1205 | |
34dc7c2f BB |
1206 | /* |
1207 | * If we are not mounting (ie: online recv), then we don't | |
1208 | * have to worry about replaying the log as we blocked all | |
1209 | * operations out since we closed the ZIL. | |
1210 | */ | |
1211 | if (mounting) { | |
dcec0a12 AP |
1212 | ASSERT3P(zfsvfs->z_kstat.dk_kstats, ==, NULL); |
1213 | dataset_kstats_create(&zfsvfs->z_kstat, zfsvfs->z_os); | |
1214 | ||
34dc7c2f BB |
1215 | /* |
1216 | * During replay we remove the read only flag to | |
1217 | * allow replays to succeed. | |
1218 | */ | |
dcec0a12 | 1219 | if (readonly != 0) { |
0037b49e | 1220 | readonly_changed_cb(zfsvfs, B_FALSE); |
dcec0a12 AP |
1221 | } else { |
1222 | zap_stats_t zs; | |
1223 | if (zap_get_stats(zfsvfs->z_os, zfsvfs->z_unlinkedobj, | |
1224 | &zs) == 0) { | |
1225 | dataset_kstats_update_nunlinks_kstat( | |
1226 | &zfsvfs->z_kstat, zs.zs_num_entries); | |
1227 | } | |
1228 | dprintf_ds(zfsvfs->z_os->os_dsl_dataset, | |
1229 | "num_entries in unlinked set: %llu", | |
1230 | zs.zs_num_entries); | |
0037b49e | 1231 | zfs_unlinked_drain(zfsvfs); |
dcec0a12 | 1232 | } |
34dc7c2f | 1233 | |
428870ff BB |
1234 | /* |
1235 | * Parse and replay the intent log. | |
1236 | * | |
1237 | * Because of ziltest, this must be done after | |
1238 | * zfs_unlinked_drain(). (Further note: ziltest | |
1239 | * doesn't use readonly mounts, where | |
1240 | * zfs_unlinked_drain() isn't called.) This is because | |
1241 | * ziltest causes spa_sync() to think it's committed, | |
1242 | * but actually it is not, so the intent log contains | |
1243 | * many txg's worth of changes. | |
1244 | * | |
1245 | * In particular, if object N is in the unlinked set in | |
1246 | * the last txg to actually sync, then it could be | |
1247 | * actually freed in a later txg and then reallocated | |
1248 | * in a yet later txg. This would write a "create | |
1249 | * object N" record to the intent log. Normally, this | |
1250 | * would be fine because the spa_sync() would have | |
1251 | * written out the fact that object N is free, before | |
1252 | * we could write the "create object N" intent log | |
1253 | * record. | |
1254 | * | |
1255 | * But when we are in ziltest mode, we advance the "open | |
1256 | * txg" without actually spa_sync()-ing the changes to | |
1257 | * disk. So we would see that object N is still | |
1258 | * allocated and in the unlinked set, and there is an | |
1259 | * intent log record saying to allocate it. | |
1260 | */ | |
0037b49e | 1261 | if (spa_writeable(dmu_objset_spa(zfsvfs->z_os))) { |
572e2857 | 1262 | if (zil_replay_disable) { |
0037b49e | 1263 | zil_destroy(zfsvfs->z_log, B_FALSE); |
572e2857 | 1264 | } else { |
0037b49e BB |
1265 | zfsvfs->z_replay = B_TRUE; |
1266 | zil_replay(zfsvfs->z_os, zfsvfs, | |
572e2857 | 1267 | zfs_replay_vector); |
0037b49e | 1268 | zfsvfs->z_replay = B_FALSE; |
572e2857 | 1269 | } |
fb5f0bc8 | 1270 | } |
2cf7f52b BB |
1271 | |
1272 | /* restore readonly bit */ | |
1273 | if (readonly != 0) | |
0037b49e | 1274 | readonly_changed_cb(zfsvfs, B_TRUE); |
34dc7c2f BB |
1275 | } |
1276 | ||
9775e988 | 1277 | /* |
0037b49e | 1278 | * Set the objset user_ptr to track its zfsvfs. |
9775e988 | 1279 | */ |
0037b49e BB |
1280 | mutex_enter(&zfsvfs->z_os->os_user_ptr_lock); |
1281 | dmu_objset_set_user(zfsvfs->z_os, zfsvfs); | |
1282 | mutex_exit(&zfsvfs->z_os->os_user_ptr_lock); | |
9775e988 | 1283 | |
34dc7c2f BB |
1284 | return (0); |
1285 | } | |
1286 | ||
9babb374 | 1287 | void |
f298b24d | 1288 | zfsvfs_free(zfsvfs_t *zfsvfs) |
34dc7c2f | 1289 | { |
0037b49e | 1290 | int i, size = zfsvfs->z_hold_size; |
9babb374 | 1291 | |
0037b49e | 1292 | zfs_fuid_destroy(zfsvfs); |
9babb374 | 1293 | |
0037b49e BB |
1294 | mutex_destroy(&zfsvfs->z_znodes_lock); |
1295 | mutex_destroy(&zfsvfs->z_lock); | |
1296 | list_destroy(&zfsvfs->z_all_znodes); | |
1297 | rrm_destroy(&zfsvfs->z_teardown_lock); | |
1298 | rw_destroy(&zfsvfs->z_teardown_inactive_lock); | |
1299 | rw_destroy(&zfsvfs->z_fuid_lock); | |
c96c36fa | 1300 | for (i = 0; i != size; i++) { |
0037b49e BB |
1301 | avl_destroy(&zfsvfs->z_hold_trees[i]); |
1302 | mutex_destroy(&zfsvfs->z_hold_locks[i]); | |
c96c36fa | 1303 | } |
0037b49e BB |
1304 | vmem_free(zfsvfs->z_hold_trees, sizeof (avl_tree_t) * size); |
1305 | vmem_free(zfsvfs->z_hold_locks, sizeof (kmutex_t) * size); | |
1c2555ef | 1306 | zfsvfs_vfs_free(zfsvfs->z_vfs); |
a448a255 | 1307 | dataset_kstats_destroy(&zfsvfs->z_kstat); |
0037b49e | 1308 | kmem_free(zfsvfs, sizeof (zfsvfs_t)); |
34dc7c2f BB |
1309 | } |
1310 | ||
9babb374 | 1311 | static void |
0037b49e | 1312 | zfs_set_fuid_feature(zfsvfs_t *zfsvfs) |
9babb374 | 1313 | { |
0037b49e BB |
1314 | zfsvfs->z_use_fuids = USE_FUIDS(zfsvfs->z_version, zfsvfs->z_os); |
1315 | zfsvfs->z_use_sa = USE_SA(zfsvfs->z_version, zfsvfs->z_os); | |
9babb374 | 1316 | } |
34dc7c2f BB |
1317 | |
1318 | void | |
0037b49e | 1319 | zfs_unregister_callbacks(zfsvfs_t *zfsvfs) |
34dc7c2f | 1320 | { |
0037b49e | 1321 | objset_t *os = zfsvfs->z_os; |
34dc7c2f | 1322 | |
0eb21616 | 1323 | if (!dmu_objset_is_snapshot(os)) |
0037b49e | 1324 | dsl_prop_unregister_all(dmu_objset_ds(os), zfsvfs); |
34dc7c2f BB |
1325 | } |
1326 | ||
bc3e15e3 | 1327 | #ifdef HAVE_MLSLABEL |
428870ff | 1328 | /* |
d3cc8b15 WA |
1329 | * Check that the hex label string is appropriate for the dataset being |
1330 | * mounted into the global_zone proper. | |
428870ff | 1331 | * |
d3cc8b15 WA |
1332 | * Return an error if the hex label string is not default or |
1333 | * admin_low/admin_high. For admin_low labels, the corresponding | |
1334 | * dataset must be readonly. | |
428870ff BB |
1335 | */ |
1336 | int | |
1337 | zfs_check_global_label(const char *dsname, const char *hexsl) | |
1338 | { | |
1339 | if (strcasecmp(hexsl, ZFS_MLSLABEL_DEFAULT) == 0) | |
1340 | return (0); | |
1341 | if (strcasecmp(hexsl, ADMIN_HIGH) == 0) | |
1342 | return (0); | |
1343 | if (strcasecmp(hexsl, ADMIN_LOW) == 0) { | |
1344 | /* must be readonly */ | |
1345 | uint64_t rdonly; | |
1346 | ||
1347 | if (dsl_prop_get_integer(dsname, | |
1348 | zfs_prop_to_name(ZFS_PROP_READONLY), &rdonly, NULL)) | |
2e528b49 | 1349 | return (SET_ERROR(EACCES)); |
428870ff BB |
1350 | return (rdonly ? 0 : EACCES); |
1351 | } | |
2e528b49 | 1352 | return (SET_ERROR(EACCES)); |
428870ff | 1353 | } |
bc3e15e3 | 1354 | #endif /* HAVE_MLSLABEL */ |
428870ff | 1355 | |
9c5167d1 NF |
1356 | static int |
1357 | zfs_statfs_project(zfsvfs_t *zfsvfs, znode_t *zp, struct kstatfs *statp, | |
1358 | uint32_t bshift) | |
1359 | { | |
1360 | char buf[20 + DMU_OBJACCT_PREFIX_LEN]; | |
1361 | uint64_t offset = DMU_OBJACCT_PREFIX_LEN; | |
1362 | uint64_t quota; | |
1363 | uint64_t used; | |
1364 | int err; | |
1365 | ||
1366 | strlcpy(buf, DMU_OBJACCT_PREFIX, DMU_OBJACCT_PREFIX_LEN + 1); | |
1367 | err = id_to_fuidstr(zfsvfs, NULL, zp->z_projid, buf + offset, B_FALSE); | |
1368 | if (err) | |
1369 | return (err); | |
1370 | ||
1371 | if (zfsvfs->z_projectquota_obj == 0) | |
1372 | goto objs; | |
1373 | ||
1374 | err = zap_lookup(zfsvfs->z_os, zfsvfs->z_projectquota_obj, | |
1375 | buf + offset, 8, 1, "a); | |
1376 | if (err == ENOENT) | |
1377 | goto objs; | |
1378 | else if (err) | |
1379 | return (err); | |
1380 | ||
1381 | err = zap_lookup(zfsvfs->z_os, DMU_PROJECTUSED_OBJECT, | |
1382 | buf + offset, 8, 1, &used); | |
1383 | if (unlikely(err == ENOENT)) { | |
1384 | uint32_t blksize; | |
1385 | u_longlong_t nblocks; | |
1386 | ||
1387 | /* | |
1388 | * Quota accounting is async, so it is possible race case. | |
1389 | * There is at least one object with the given project ID. | |
1390 | */ | |
1391 | sa_object_size(zp->z_sa_hdl, &blksize, &nblocks); | |
1392 | if (unlikely(zp->z_blksz == 0)) | |
1393 | blksize = zfsvfs->z_max_blksz; | |
1394 | ||
1395 | used = blksize * nblocks; | |
1396 | } else if (err) { | |
1397 | return (err); | |
1398 | } | |
1399 | ||
1400 | statp->f_blocks = quota >> bshift; | |
1401 | statp->f_bfree = (quota > used) ? ((quota - used) >> bshift) : 0; | |
1402 | statp->f_bavail = statp->f_bfree; | |
1403 | ||
1404 | objs: | |
1405 | if (zfsvfs->z_projectobjquota_obj == 0) | |
1406 | return (0); | |
1407 | ||
1408 | err = zap_lookup(zfsvfs->z_os, zfsvfs->z_projectobjquota_obj, | |
1409 | buf + offset, 8, 1, "a); | |
1410 | if (err == ENOENT) | |
1411 | return (0); | |
1412 | else if (err) | |
1413 | return (err); | |
1414 | ||
1415 | err = zap_lookup(zfsvfs->z_os, DMU_PROJECTUSED_OBJECT, | |
1416 | buf, 8, 1, &used); | |
1417 | if (unlikely(err == ENOENT)) { | |
1418 | /* | |
1419 | * Quota accounting is async, so it is possible race case. | |
1420 | * There is at least one object with the given project ID. | |
1421 | */ | |
1422 | used = 1; | |
1423 | } else if (err) { | |
1424 | return (err); | |
1425 | } | |
1426 | ||
1427 | statp->f_files = quota; | |
1428 | statp->f_ffree = (quota > used) ? (quota - used) : 0; | |
1429 | ||
1430 | return (0); | |
1431 | } | |
1432 | ||
e5c39b95 | 1433 | int |
3558fd73 | 1434 | zfs_statvfs(struct dentry *dentry, struct kstatfs *statp) |
34dc7c2f | 1435 | { |
0037b49e | 1436 | zfsvfs_t *zfsvfs = dentry->d_sb->s_fs_info; |
34dc7c2f | 1437 | uint64_t refdbytes, availbytes, usedobjs, availobjs; |
9c5167d1 | 1438 | int err = 0; |
34dc7c2f | 1439 | |
0037b49e | 1440 | ZFS_ENTER(zfsvfs); |
34dc7c2f | 1441 | |
0037b49e | 1442 | dmu_objset_space(zfsvfs->z_os, |
34dc7c2f BB |
1443 | &refdbytes, &availbytes, &usedobjs, &availobjs); |
1444 | ||
e897a23e | 1445 | uint64_t fsid = dmu_objset_fsid_guid(zfsvfs->z_os); |
34dc7c2f | 1446 | /* |
05ff35c6 BB |
1447 | * The underlying storage pool actually uses multiple block |
1448 | * size. Under Solaris frsize (fragment size) is reported as | |
1449 | * the smallest block size we support, and bsize (block size) | |
1450 | * as the filesystem's maximum block size. Unfortunately, | |
1451 | * under Linux the fragment size and block size are often used | |
1452 | * interchangeably. Thus we are forced to report both of them | |
1453 | * as the filesystem's maximum block size. | |
34dc7c2f | 1454 | */ |
0037b49e BB |
1455 | statp->f_frsize = zfsvfs->z_max_blksz; |
1456 | statp->f_bsize = zfsvfs->z_max_blksz; | |
e897a23e | 1457 | uint32_t bshift = fls(statp->f_bsize) - 1; |
34dc7c2f BB |
1458 | |
1459 | /* | |
3558fd73 BB |
1460 | * The following report "total" blocks of various kinds in |
1461 | * the file system, but reported in terms of f_bsize - the | |
1462 | * "preferred" size. | |
34dc7c2f BB |
1463 | */ |
1464 | ||
83c796c5 PZ |
1465 | /* Round up so we never have a filesytem using 0 blocks. */ |
1466 | refdbytes = P2ROUNDUP(refdbytes, statp->f_bsize); | |
3558fd73 BB |
1467 | statp->f_blocks = (refdbytes + availbytes) >> bshift; |
1468 | statp->f_bfree = availbytes >> bshift; | |
34dc7c2f BB |
1469 | statp->f_bavail = statp->f_bfree; /* no root reservation */ |
1470 | ||
1471 | /* | |
1472 | * statvfs() should really be called statufs(), because it assumes | |
1473 | * static metadata. ZFS doesn't preallocate files, so the best | |
1474 | * we can do is report the max that could possibly fit in f_files, | |
1475 | * and that minus the number actually used in f_ffree. | |
e897a23e | 1476 | * For f_ffree, report the smaller of the number of objects available |
34dc7c2f BB |
1477 | * and the number of blocks (each object will take at least a block). |
1478 | */ | |
baab0630 | 1479 | statp->f_ffree = MIN(availobjs, availbytes >> DNODE_SHIFT); |
34dc7c2f | 1480 | statp->f_files = statp->f_ffree + usedobjs; |
04f9432d CP |
1481 | statp->f_fsid.val[0] = (uint32_t)fsid; |
1482 | statp->f_fsid.val[1] = (uint32_t)(fsid >> 32); | |
3558fd73 | 1483 | statp->f_type = ZFS_SUPER_MAGIC; |
eca7b760 | 1484 | statp->f_namelen = MAXNAMELEN - 1; |
34dc7c2f BB |
1485 | |
1486 | /* | |
3558fd73 | 1487 | * We have all of 40 characters to stuff a string here. |
34dc7c2f BB |
1488 | * Is there anything useful we could/should provide? |
1489 | */ | |
3558fd73 | 1490 | bzero(statp->f_spare, sizeof (statp->f_spare)); |
34dc7c2f | 1491 | |
9c5167d1 NF |
1492 | if (dmu_objset_projectquota_enabled(zfsvfs->z_os) && |
1493 | dmu_objset_projectquota_present(zfsvfs->z_os)) { | |
1494 | znode_t *zp = ITOZ(dentry->d_inode); | |
1495 | ||
1496 | if (zp->z_pflags & ZFS_PROJINHERIT && zp->z_projid && | |
1497 | zpl_is_valid_projid(zp->z_projid)) | |
1498 | err = zfs_statfs_project(zfsvfs, zp, statp, bshift); | |
1499 | } | |
1500 | ||
0037b49e | 1501 | ZFS_EXIT(zfsvfs); |
9c5167d1 | 1502 | return (err); |
34dc7c2f BB |
1503 | } |
1504 | ||
e5c39b95 | 1505 | int |
0037b49e | 1506 | zfs_root(zfsvfs_t *zfsvfs, struct inode **ipp) |
34dc7c2f | 1507 | { |
34dc7c2f BB |
1508 | znode_t *rootzp; |
1509 | int error; | |
1510 | ||
0037b49e | 1511 | ZFS_ENTER(zfsvfs); |
34dc7c2f | 1512 | |
0037b49e | 1513 | error = zfs_zget(zfsvfs, zfsvfs->z_root, &rootzp); |
34dc7c2f | 1514 | if (error == 0) |
3558fd73 | 1515 | *ipp = ZTOI(rootzp); |
34dc7c2f | 1516 | |
0037b49e | 1517 | ZFS_EXIT(zfsvfs); |
34dc7c2f BB |
1518 | return (error); |
1519 | } | |
1520 | ||
09fb30e5 | 1521 | #ifdef HAVE_D_PRUNE_ALIASES |
218b4e0a BB |
1522 | /* |
1523 | * Linux kernels older than 3.1 do not support a per-filesystem shrinker. | |
1524 | * To accommodate this we must improvise and manually walk the list of znodes | |
1525 | * attempting to prune dentries in order to be able to drop the inodes. | |
1526 | * | |
1527 | * To avoid scanning the same znodes multiple times they are always rotated | |
1528 | * to the end of the z_all_znodes list. New znodes are inserted at the | |
1529 | * end of the list so we're always scanning the oldest znodes first. | |
1530 | */ | |
1531 | static int | |
f298b24d | 1532 | zfs_prune_aliases(zfsvfs_t *zfsvfs, unsigned long nr_to_scan) |
218b4e0a BB |
1533 | { |
1534 | znode_t **zp_array, *zp; | |
1535 | int max_array = MIN(nr_to_scan, PAGE_SIZE * 8 / sizeof (znode_t *)); | |
1536 | int objects = 0; | |
1537 | int i = 0, j = 0; | |
1538 | ||
1539 | zp_array = kmem_zalloc(max_array * sizeof (znode_t *), KM_SLEEP); | |
1540 | ||
0037b49e BB |
1541 | mutex_enter(&zfsvfs->z_znodes_lock); |
1542 | while ((zp = list_head(&zfsvfs->z_all_znodes)) != NULL) { | |
218b4e0a BB |
1543 | |
1544 | if ((i++ > nr_to_scan) || (j >= max_array)) | |
1545 | break; | |
1546 | ||
1547 | ASSERT(list_link_active(&zp->z_link_node)); | |
0037b49e BB |
1548 | list_remove(&zfsvfs->z_all_znodes, zp); |
1549 | list_insert_tail(&zfsvfs->z_all_znodes, zp); | |
218b4e0a BB |
1550 | |
1551 | /* Skip active znodes and .zfs entries */ | |
1552 | if (MUTEX_HELD(&zp->z_lock) || zp->z_is_ctldir) | |
1553 | continue; | |
1554 | ||
1555 | if (igrab(ZTOI(zp)) == NULL) | |
1556 | continue; | |
1557 | ||
1558 | zp_array[j] = zp; | |
1559 | j++; | |
1560 | } | |
0037b49e | 1561 | mutex_exit(&zfsvfs->z_znodes_lock); |
218b4e0a BB |
1562 | |
1563 | for (i = 0; i < j; i++) { | |
1564 | zp = zp_array[i]; | |
1565 | ||
1566 | ASSERT3P(zp, !=, NULL); | |
1567 | d_prune_aliases(ZTOI(zp)); | |
1568 | ||
1569 | if (atomic_read(&ZTOI(zp)->i_count) == 1) | |
1570 | objects++; | |
1571 | ||
1572 | iput(ZTOI(zp)); | |
1573 | } | |
1574 | ||
1575 | kmem_free(zp_array, max_array * sizeof (znode_t *)); | |
1576 | ||
1577 | return (objects); | |
1578 | } | |
1579 | #endif /* HAVE_D_PRUNE_ALIASES */ | |
1580 | ||
2cbb06b5 BB |
1581 | /* |
1582 | * The ARC has requested that the filesystem drop entries from the dentry | |
1583 | * and inode caches. This can occur when the ARC needs to free meta data | |
1584 | * blocks but can't because they are all pinned by entries in these caches. | |
1585 | */ | |
ab26409d | 1586 | int |
f298b24d | 1587 | zfs_prune(struct super_block *sb, unsigned long nr_to_scan, int *objects) |
ab26409d | 1588 | { |
0037b49e | 1589 | zfsvfs_t *zfsvfs = sb->s_fs_info; |
2cbb06b5 BB |
1590 | int error = 0; |
1591 | #if defined(HAVE_SHRINK) || defined(HAVE_SPLIT_SHRINKER_CALLBACK) | |
ab26409d BB |
1592 | struct shrinker *shrinker = &sb->s_shrink; |
1593 | struct shrink_control sc = { | |
1594 | .nr_to_scan = nr_to_scan, | |
1595 | .gfp_mask = GFP_KERNEL, | |
1596 | }; | |
2cbb06b5 | 1597 | #endif |
ab26409d | 1598 | |
0037b49e | 1599 | ZFS_ENTER(zfsvfs); |
2cbb06b5 | 1600 | |
90947b23 TC |
1601 | #if defined(HAVE_SPLIT_SHRINKER_CALLBACK) && \ |
1602 | defined(SHRINK_CONTROL_HAS_NID) && \ | |
1603 | defined(SHRINKER_NUMA_AWARE) | |
1604 | if (sb->s_shrink.flags & SHRINKER_NUMA_AWARE) { | |
1605 | *objects = 0; | |
02730c33 | 1606 | for_each_online_node(sc.nid) { |
90947b23 | 1607 | *objects += (*shrinker->scan_objects)(shrinker, &sc); |
02730c33 | 1608 | } |
90947b23 TC |
1609 | } else { |
1610 | *objects = (*shrinker->scan_objects)(shrinker, &sc); | |
1611 | } | |
09fb30e5 | 1612 | |
90947b23 | 1613 | #elif defined(HAVE_SPLIT_SHRINKER_CALLBACK) |
3c832b8c | 1614 | *objects = (*shrinker->scan_objects)(shrinker, &sc); |
2cbb06b5 | 1615 | #elif defined(HAVE_SHRINK) |
ab26409d | 1616 | *objects = (*shrinker->shrink)(shrinker, &sc); |
218b4e0a | 1617 | #elif defined(HAVE_D_PRUNE_ALIASES) |
09fb30e5 | 1618 | #define D_PRUNE_ALIASES_IS_DEFAULT |
f298b24d | 1619 | *objects = zfs_prune_aliases(zfsvfs, nr_to_scan); |
2cbb06b5 | 1620 | #else |
218b4e0a | 1621 | #error "No available dentry and inode cache pruning mechanism." |
3c832b8c | 1622 | #endif |
09fb30e5 TC |
1623 | |
1624 | #if defined(HAVE_D_PRUNE_ALIASES) && !defined(D_PRUNE_ALIASES_IS_DEFAULT) | |
1625 | #undef D_PRUNE_ALIASES_IS_DEFAULT | |
1626 | /* | |
f298b24d | 1627 | * Fall back to zfs_prune_aliases if the kernel's per-superblock |
09fb30e5 TC |
1628 | * shrinker couldn't free anything, possibly due to the inodes being |
1629 | * allocated in a different memcg. | |
1630 | */ | |
1631 | if (*objects == 0) | |
f298b24d | 1632 | *objects = zfs_prune_aliases(zfsvfs, nr_to_scan); |
09fb30e5 TC |
1633 | #endif |
1634 | ||
0037b49e | 1635 | ZFS_EXIT(zfsvfs); |
ab26409d | 1636 | |
0037b49e | 1637 | dprintf_ds(zfsvfs->z_os->os_dsl_dataset, |
2cbb06b5 BB |
1638 | "pruning, nr_to_scan=%lu objects=%d error=%d\n", |
1639 | nr_to_scan, *objects, error); | |
1640 | ||
1641 | return (error); | |
ab26409d | 1642 | } |
ab26409d | 1643 | |
34dc7c2f | 1644 | /* |
0037b49e | 1645 | * Teardown the zfsvfs_t. |
34dc7c2f | 1646 | * |
a08abc1b | 1647 | * Note, if 'unmounting' is FALSE, we return with the 'z_teardown_lock' |
34dc7c2f BB |
1648 | * and 'z_teardown_inactive_lock' held. |
1649 | */ | |
f298b24d | 1650 | static int |
0037b49e | 1651 | zfsvfs_teardown(zfsvfs_t *zfsvfs, boolean_t unmounting) |
34dc7c2f BB |
1652 | { |
1653 | znode_t *zp; | |
1654 | ||
dcec0a12 AP |
1655 | zfs_unlinked_drain_stop_wait(zfsvfs); |
1656 | ||
fd23720a BB |
1657 | /* |
1658 | * If someone has not already unmounted this file system, | |
1659 | * drain the iput_taskq to ensure all active references to the | |
0037b49e | 1660 | * zfsvfs_t have been handled only then can it be safely destroyed. |
fd23720a | 1661 | */ |
0037b49e | 1662 | if (zfsvfs->z_os) { |
f0da4d15 CD |
1663 | /* |
1664 | * If we're unmounting we have to wait for the list to | |
1665 | * drain completely. | |
1666 | * | |
1667 | * If we're not unmounting there's no guarantee the list | |
1668 | * will drain completely, but iputs run from the taskq | |
1669 | * may add the parents of dir-based xattrs to the taskq | |
1670 | * so we want to wait for these. | |
1671 | * | |
1672 | * We can safely read z_nr_znodes without locking because the | |
1673 | * VFS has already blocked operations which add to the | |
1674 | * z_all_znodes list and thus increment z_nr_znodes. | |
1675 | */ | |
1676 | int round = 0; | |
0037b49e | 1677 | while (zfsvfs->z_nr_znodes > 0) { |
c5528b9b | 1678 | taskq_wait_outstanding(dsl_pool_iput_taskq( |
0037b49e | 1679 | dmu_objset_pool(zfsvfs->z_os)), 0); |
f0da4d15 CD |
1680 | if (++round > 1 && !unmounting) |
1681 | break; | |
1682 | } | |
1683 | } | |
fd23720a | 1684 | |
0037b49e | 1685 | rrm_enter(&zfsvfs->z_teardown_lock, RW_WRITER, FTAG); |
34dc7c2f BB |
1686 | |
1687 | if (!unmounting) { | |
1688 | /* | |
ceb43b93 BB |
1689 | * We purge the parent filesystem's super block as the |
1690 | * parent filesystem and all of its snapshots have their | |
1691 | * inode's super block set to the parent's filesystem's | |
1692 | * super block. Note, 'z_parent' is self referential | |
1693 | * for non-snapshots. | |
34dc7c2f | 1694 | */ |
0037b49e | 1695 | shrink_dcache_sb(zfsvfs->z_parent->z_sb); |
34dc7c2f BB |
1696 | } |
1697 | ||
1698 | /* | |
1699 | * Close the zil. NB: Can't close the zil while zfs_inactive | |
1700 | * threads are blocked as zil_close can call zfs_inactive. | |
1701 | */ | |
0037b49e BB |
1702 | if (zfsvfs->z_log) { |
1703 | zil_close(zfsvfs->z_log); | |
1704 | zfsvfs->z_log = NULL; | |
34dc7c2f BB |
1705 | } |
1706 | ||
0037b49e | 1707 | rw_enter(&zfsvfs->z_teardown_inactive_lock, RW_WRITER); |
34dc7c2f BB |
1708 | |
1709 | /* | |
1710 | * If we are not unmounting (ie: online recv) and someone already | |
1711 | * unmounted this file system while we were doing the switcheroo, | |
1712 | * or a reopen of z_os failed then just bail out now. | |
1713 | */ | |
0037b49e BB |
1714 | if (!unmounting && (zfsvfs->z_unmounted || zfsvfs->z_os == NULL)) { |
1715 | rw_exit(&zfsvfs->z_teardown_inactive_lock); | |
1716 | rrm_exit(&zfsvfs->z_teardown_lock, FTAG); | |
2e528b49 | 1717 | return (SET_ERROR(EIO)); |
34dc7c2f BB |
1718 | } |
1719 | ||
1720 | /* | |
7b3e34ba BB |
1721 | * At this point there are no VFS ops active, and any new VFS ops |
1722 | * will fail with EIO since we have z_teardown_lock for writer (only | |
1723 | * relevant for forced unmount). | |
34dc7c2f BB |
1724 | * |
1725 | * Release all holds on dbufs. | |
1726 | */ | |
f0da4d15 | 1727 | if (!unmounting) { |
0037b49e BB |
1728 | mutex_enter(&zfsvfs->z_znodes_lock); |
1729 | for (zp = list_head(&zfsvfs->z_all_znodes); zp != NULL; | |
1730 | zp = list_next(&zfsvfs->z_all_znodes, zp)) { | |
f0da4d15 CD |
1731 | if (zp->z_sa_hdl) |
1732 | zfs_znode_dmu_fini(zp); | |
1733 | } | |
0037b49e | 1734 | mutex_exit(&zfsvfs->z_znodes_lock); |
7b3e34ba | 1735 | } |
34dc7c2f BB |
1736 | |
1737 | /* | |
7b3e34ba | 1738 | * If we are unmounting, set the unmounted flag and let new VFS ops |
34dc7c2f | 1739 | * unblock. zfs_inactive will have the unmounted behavior, and all |
7b3e34ba | 1740 | * other VFS ops will fail with EIO. |
34dc7c2f BB |
1741 | */ |
1742 | if (unmounting) { | |
0037b49e BB |
1743 | zfsvfs->z_unmounted = B_TRUE; |
1744 | rw_exit(&zfsvfs->z_teardown_inactive_lock); | |
1745 | rrm_exit(&zfsvfs->z_teardown_lock, FTAG); | |
34dc7c2f BB |
1746 | } |
1747 | ||
1748 | /* | |
1749 | * z_os will be NULL if there was an error in attempting to reopen | |
0037b49e | 1750 | * zfsvfs, so just return as the properties had already been |
3558fd73 | 1751 | * |
34dc7c2f BB |
1752 | * unregistered and cached data had been evicted before. |
1753 | */ | |
0037b49e | 1754 | if (zfsvfs->z_os == NULL) |
34dc7c2f BB |
1755 | return (0); |
1756 | ||
1757 | /* | |
1758 | * Unregister properties. | |
1759 | */ | |
0037b49e | 1760 | zfs_unregister_callbacks(zfsvfs); |
34dc7c2f BB |
1761 | |
1762 | /* | |
47ab01a1 TC |
1763 | * Evict cached data. We must write out any dirty data before |
1764 | * disowning the dataset. | |
34dc7c2f | 1765 | */ |
47ab01a1 | 1766 | if (!zfs_is_readonly(zfsvfs)) |
0037b49e BB |
1767 | txg_wait_synced(dmu_objset_pool(zfsvfs->z_os), 0); |
1768 | dmu_objset_evict_dbufs(zfsvfs->z_os); | |
34dc7c2f BB |
1769 | |
1770 | return (0); | |
1771 | } | |
1772 | ||
3e6c9433 | 1773 | #if !defined(HAVE_2ARGS_BDI_SETUP_AND_REGISTER) && \ |
8c45def2 | 1774 | !defined(HAVE_3ARGS_BDI_SETUP_AND_REGISTER) |
5547c2f1 | 1775 | atomic_long_t zfs_bdi_seq = ATOMIC_LONG_INIT(0); |
8c45def2 | 1776 | #endif |
76659dc1 | 1777 | |
e5c39b95 | 1778 | int |
1c2555ef | 1779 | zfs_domount(struct super_block *sb, zfs_mnt_t *zm, int silent) |
34dc7c2f | 1780 | { |
1c2555ef | 1781 | const char *osname = zm->mnt_osname; |
3558fd73 BB |
1782 | struct inode *root_inode; |
1783 | uint64_t recordsize; | |
1c2555ef | 1784 | int error = 0; |
163a8c28 TC |
1785 | zfsvfs_t *zfsvfs = NULL; |
1786 | vfs_t *vfs = NULL; | |
1c2555ef BB |
1787 | |
1788 | ASSERT(zm); | |
1789 | ASSERT(osname); | |
34dc7c2f | 1790 | |
163a8c28 | 1791 | error = zfsvfs_parse_options(zm->mnt_data, &vfs); |
3558fd73 BB |
1792 | if (error) |
1793 | return (error); | |
1794 | ||
163a8c28 TC |
1795 | error = zfsvfs_create(osname, vfs->vfs_readonly, &zfsvfs); |
1796 | if (error) { | |
1797 | zfsvfs_vfs_free(vfs); | |
1c2555ef | 1798 | goto out; |
163a8c28 | 1799 | } |
1c2555ef | 1800 | |
3558fd73 | 1801 | if ((error = dsl_prop_get_integer(osname, "recordsize", |
163a8c28 TC |
1802 | &recordsize, NULL))) { |
1803 | zfsvfs_vfs_free(vfs); | |
3558fd73 | 1804 | goto out; |
163a8c28 | 1805 | } |
3558fd73 | 1806 | |
163a8c28 TC |
1807 | vfs->vfs_data = zfsvfs; |
1808 | zfsvfs->z_vfs = vfs; | |
0037b49e BB |
1809 | zfsvfs->z_sb = sb; |
1810 | sb->s_fs_info = zfsvfs; | |
3558fd73 BB |
1811 | sb->s_magic = ZFS_SUPER_MAGIC; |
1812 | sb->s_maxbytes = MAX_LFS_FILESIZE; | |
1813 | sb->s_time_gran = 1; | |
1814 | sb->s_blocksize = recordsize; | |
1815 | sb->s_blocksize_bits = ilog2(recordsize); | |
5547c2f1 | 1816 | |
7dae2c81 | 1817 | error = -zpl_bdi_setup(sb, "zfs"); |
5547c2f1 BB |
1818 | if (error) |
1819 | goto out; | |
3558fd73 | 1820 | |
7dae2c81 BB |
1821 | sb->s_bdi->ra_pages = 0; |
1822 | ||
3558fd73 BB |
1823 | /* Set callback operations for the file system. */ |
1824 | sb->s_op = &zpl_super_operations; | |
1825 | sb->s_xattr = zpl_xattr_handlers; | |
055656d4 | 1826 | sb->s_export_op = &zpl_export_operations; |
ee930353 BB |
1827 | #ifdef HAVE_S_D_OP |
1828 | sb->s_d_op = &zpl_dentry_operations; | |
1829 | #endif /* HAVE_S_D_OP */ | |
3558fd73 BB |
1830 | |
1831 | /* Set features for file system. */ | |
0037b49e | 1832 | zfs_set_fuid_feature(zfsvfs); |
3558fd73 | 1833 | |
0037b49e | 1834 | if (dmu_objset_is_snapshot(zfsvfs->z_os)) { |
3558fd73 BB |
1835 | uint64_t pval; |
1836 | ||
0037b49e BB |
1837 | atime_changed_cb(zfsvfs, B_FALSE); |
1838 | readonly_changed_cb(zfsvfs, B_TRUE); | |
d1d7e268 MK |
1839 | if ((error = dsl_prop_get_integer(osname, |
1840 | "xattr", &pval, NULL))) | |
3558fd73 | 1841 | goto out; |
0037b49e | 1842 | xattr_changed_cb(zfsvfs, pval); |
d1d7e268 MK |
1843 | if ((error = dsl_prop_get_integer(osname, |
1844 | "acltype", &pval, NULL))) | |
023699cd | 1845 | goto out; |
0037b49e BB |
1846 | acltype_changed_cb(zfsvfs, pval); |
1847 | zfsvfs->z_issnap = B_TRUE; | |
1848 | zfsvfs->z_os->os_sync = ZFS_SYNC_DISABLED; | |
1849 | zfsvfs->z_snap_defer_time = jiffies; | |
1850 | ||
1851 | mutex_enter(&zfsvfs->z_os->os_user_ptr_lock); | |
1852 | dmu_objset_set_user(zfsvfs->z_os, zfsvfs); | |
1853 | mutex_exit(&zfsvfs->z_os->os_user_ptr_lock); | |
3558fd73 | 1854 | } else { |
f298b24d | 1855 | if ((error = zfsvfs_setup(zfsvfs, B_TRUE))) |
be88e733 | 1856 | goto out; |
34dc7c2f BB |
1857 | } |
1858 | ||
3558fd73 | 1859 | /* Allocate a root inode for the filesystem. */ |
0037b49e | 1860 | error = zfs_root(zfsvfs, &root_inode); |
3558fd73 BB |
1861 | if (error) { |
1862 | (void) zfs_umount(sb); | |
1863 | goto out; | |
34dc7c2f BB |
1864 | } |
1865 | ||
3558fd73 | 1866 | /* Allocate a root dentry for the filesystem */ |
6a0936ba | 1867 | sb->s_root = d_make_root(root_inode); |
3558fd73 BB |
1868 | if (sb->s_root == NULL) { |
1869 | (void) zfs_umount(sb); | |
2e528b49 | 1870 | error = SET_ERROR(ENOMEM); |
3558fd73 BB |
1871 | goto out; |
1872 | } | |
ebe7e575 | 1873 | |
0037b49e BB |
1874 | if (!zfsvfs->z_issnap) |
1875 | zfsctl_create(zfsvfs); | |
2cbb06b5 | 1876 | |
0037b49e | 1877 | zfsvfs->z_arc_prune = arc_add_prune_callback(zpl_prune_sb, sb); |
3558fd73 BB |
1878 | out: |
1879 | if (error) { | |
163a8c28 TC |
1880 | if (zfsvfs != NULL) { |
1881 | dmu_objset_disown(zfsvfs->z_os, B_TRUE, zfsvfs); | |
1882 | zfsvfs_free(zfsvfs); | |
1883 | } | |
be88e733 CC |
1884 | /* |
1885 | * make sure we don't have dangling sb->s_fs_info which | |
1886 | * zfs_preumount will use. | |
1887 | */ | |
1888 | sb->s_fs_info = NULL; | |
3558fd73 | 1889 | } |
34dc7c2f | 1890 | |
3558fd73 BB |
1891 | return (error); |
1892 | } | |
3558fd73 | 1893 | |
ebe7e575 BB |
1894 | /* |
1895 | * Called when an unmount is requested and certain sanity checks have | |
1896 | * already passed. At this point no dentries or inodes have been reclaimed | |
1897 | * from their respective caches. We drop the extra reference on the .zfs | |
1898 | * control directory to allow everything to be reclaimed. All snapshots | |
1899 | * must already have been unmounted to reach this point. | |
1900 | */ | |
1901 | void | |
1902 | zfs_preumount(struct super_block *sb) | |
1903 | { | |
0037b49e | 1904 | zfsvfs_t *zfsvfs = sb->s_fs_info; |
ebe7e575 | 1905 | |
0037b49e BB |
1906 | /* zfsvfs is NULL when zfs_domount fails during mount */ |
1907 | if (zfsvfs) { | |
dcec0a12 | 1908 | zfs_unlinked_drain_stop_wait(zfsvfs); |
278bee93 | 1909 | zfsctl_destroy(sb->s_fs_info); |
be88e733 CC |
1910 | /* |
1911 | * Wait for iput_async before entering evict_inodes in | |
1912 | * generic_shutdown_super. The reason we must finish before | |
1913 | * evict_inodes is when lazytime is on, or when zfs_purgedir | |
1914 | * calls zfs_zget, iput would bump i_count from 0 to 1. This | |
1915 | * would race with the i_count check in evict_inodes. This means | |
1916 | * it could destroy the inode while we are still using it. | |
1917 | * | |
1918 | * We wait for two passes. xattr directories in the first pass | |
1919 | * may add xattr entries in zfs_purgedir, so in the second pass | |
1920 | * we wait for them. We don't use taskq_wait here because it is | |
1921 | * a pool wide taskq. Other mounted filesystems can constantly | |
1922 | * do iput_async and there's no guarantee when taskq will be | |
1923 | * empty. | |
1924 | */ | |
1925 | taskq_wait_outstanding(dsl_pool_iput_taskq( | |
0037b49e | 1926 | dmu_objset_pool(zfsvfs->z_os)), 0); |
be88e733 | 1927 | taskq_wait_outstanding(dsl_pool_iput_taskq( |
0037b49e | 1928 | dmu_objset_pool(zfsvfs->z_os)), 0); |
be88e733 | 1929 | } |
ebe7e575 | 1930 | } |
ebe7e575 BB |
1931 | |
1932 | /* | |
1933 | * Called once all other unmount released tear down has occurred. | |
1934 | * It is our responsibility to release any remaining infrastructure. | |
1935 | */ | |
3558fd73 BB |
1936 | /*ARGSUSED*/ |
1937 | int | |
1938 | zfs_umount(struct super_block *sb) | |
1939 | { | |
0037b49e | 1940 | zfsvfs_t *zfsvfs = sb->s_fs_info; |
3558fd73 BB |
1941 | objset_t *os; |
1942 | ||
b5256303 TC |
1943 | if (zfsvfs->z_arc_prune != NULL) |
1944 | arc_remove_prune_callback(zfsvfs->z_arc_prune); | |
0037b49e BB |
1945 | VERIFY(zfsvfs_teardown(zfsvfs, B_TRUE) == 0); |
1946 | os = zfsvfs->z_os; | |
7dae2c81 | 1947 | zpl_bdi_destroy(sb); |
76659dc1 | 1948 | |
34dc7c2f BB |
1949 | /* |
1950 | * z_os will be NULL if there was an error in | |
0037b49e | 1951 | * attempting to reopen zfsvfs. |
34dc7c2f BB |
1952 | */ |
1953 | if (os != NULL) { | |
1954 | /* | |
1955 | * Unset the objset user_ptr. | |
1956 | */ | |
428870ff | 1957 | mutex_enter(&os->os_user_ptr_lock); |
34dc7c2f | 1958 | dmu_objset_set_user(os, NULL); |
428870ff | 1959 | mutex_exit(&os->os_user_ptr_lock); |
34dc7c2f BB |
1960 | |
1961 | /* | |
b128c09f | 1962 | * Finally release the objset |
34dc7c2f | 1963 | */ |
b5256303 | 1964 | dmu_objset_disown(os, B_TRUE, zfsvfs); |
34dc7c2f BB |
1965 | } |
1966 | ||
f298b24d | 1967 | zfsvfs_free(zfsvfs); |
34dc7c2f BB |
1968 | return (0); |
1969 | } | |
1970 | ||
0de19dad | 1971 | int |
1c2555ef | 1972 | zfs_remount(struct super_block *sb, int *flags, zfs_mnt_t *zm) |
0de19dad | 1973 | { |
0037b49e | 1974 | zfsvfs_t *zfsvfs = sb->s_fs_info; |
1c2555ef | 1975 | vfs_t *vfsp; |
08de8c16 | 1976 | boolean_t issnap = dmu_objset_is_snapshot(zfsvfs->z_os); |
0282c413 BB |
1977 | int error; |
1978 | ||
08de8c16 | 1979 | if ((issnap || !spa_writeable(dmu_objset_spa(zfsvfs->z_os))) && |
05805494 TH |
1980 | !(*flags & SB_RDONLY)) { |
1981 | *flags |= SB_RDONLY; | |
08de8c16 | 1982 | return (EROFS); |
1983 | } | |
1984 | ||
1c2555ef BB |
1985 | error = zfsvfs_parse_options(zm->mnt_data, &vfsp); |
1986 | if (error) | |
1987 | return (error); | |
1988 | ||
05805494 | 1989 | if (!zfs_is_readonly(zfsvfs) && (*flags & SB_RDONLY)) |
47ab01a1 TC |
1990 | txg_wait_synced(dmu_objset_pool(zfsvfs->z_os), 0); |
1991 | ||
0037b49e | 1992 | zfs_unregister_callbacks(zfsvfs); |
1c2555ef BB |
1993 | zfsvfs_vfs_free(zfsvfs->z_vfs); |
1994 | ||
1995 | vfsp->vfs_data = zfsvfs; | |
1996 | zfsvfs->z_vfs = vfsp; | |
08de8c16 | 1997 | if (!issnap) |
1998 | (void) zfs_register_callbacks(vfsp); | |
0282c413 BB |
1999 | |
2000 | return (error); | |
0de19dad | 2001 | } |
0de19dad | 2002 | |
e5c39b95 | 2003 | int |
2cf7f52b | 2004 | zfs_vget(struct super_block *sb, struct inode **ipp, fid_t *fidp) |
34dc7c2f | 2005 | { |
0037b49e | 2006 | zfsvfs_t *zfsvfs = sb->s_fs_info; |
34dc7c2f BB |
2007 | znode_t *zp; |
2008 | uint64_t object = 0; | |
2009 | uint64_t fid_gen = 0; | |
2010 | uint64_t gen_mask; | |
2011 | uint64_t zp_gen; | |
3558fd73 | 2012 | int i, err; |
34dc7c2f | 2013 | |
3558fd73 | 2014 | *ipp = NULL; |
34dc7c2f | 2015 | |
9b77d1c9 CC |
2016 | if (fidp->fid_len == SHORT_FID_LEN || fidp->fid_len == LONG_FID_LEN) { |
2017 | zfid_short_t *zfid = (zfid_short_t *)fidp; | |
2018 | ||
2019 | for (i = 0; i < sizeof (zfid->zf_object); i++) | |
2020 | object |= ((uint64_t)zfid->zf_object[i]) << (8 * i); | |
34dc7c2f | 2021 | |
9b77d1c9 CC |
2022 | for (i = 0; i < sizeof (zfid->zf_gen); i++) |
2023 | fid_gen |= ((uint64_t)zfid->zf_gen[i]) << (8 * i); | |
2024 | } else { | |
2025 | return (SET_ERROR(EINVAL)); | |
2026 | } | |
2027 | ||
2028 | /* LONG_FID_LEN means snapdirs */ | |
34dc7c2f BB |
2029 | if (fidp->fid_len == LONG_FID_LEN) { |
2030 | zfid_long_t *zlfid = (zfid_long_t *)fidp; | |
2031 | uint64_t objsetid = 0; | |
2032 | uint64_t setgen = 0; | |
2033 | ||
2034 | for (i = 0; i < sizeof (zlfid->zf_setid); i++) | |
2035 | objsetid |= ((uint64_t)zlfid->zf_setid[i]) << (8 * i); | |
2036 | ||
2037 | for (i = 0; i < sizeof (zlfid->zf_setgen); i++) | |
2038 | setgen |= ((uint64_t)zlfid->zf_setgen[i]) << (8 * i); | |
2039 | ||
9b77d1c9 CC |
2040 | if (objsetid != ZFSCTL_INO_SNAPDIRS - object) { |
2041 | dprintf("snapdir fid: objsetid (%llu) != " | |
2042 | "ZFSCTL_INO_SNAPDIRS (%llu) - object (%llu)\n", | |
2043 | objsetid, ZFSCTL_INO_SNAPDIRS, object); | |
34dc7c2f | 2044 | |
2e528b49 | 2045 | return (SET_ERROR(EINVAL)); |
9b77d1c9 | 2046 | } |
ebe7e575 | 2047 | |
9b77d1c9 CC |
2048 | if (fid_gen > 1 || setgen != 0) { |
2049 | dprintf("snapdir fid: fid_gen (%llu) and setgen " | |
2050 | "(%llu)\n", fid_gen, setgen); | |
2051 | return (SET_ERROR(EINVAL)); | |
2052 | } | |
34dc7c2f | 2053 | |
9b77d1c9 | 2054 | return (zfsctl_snapdir_vget(sb, objsetid, fid_gen, ipp)); |
34dc7c2f BB |
2055 | } |
2056 | ||
0037b49e | 2057 | ZFS_ENTER(zfsvfs); |
34dc7c2f BB |
2058 | /* A zero fid_gen means we are in the .zfs control directories */ |
2059 | if (fid_gen == 0 && | |
2060 | (object == ZFSCTL_INO_ROOT || object == ZFSCTL_INO_SNAPDIR)) { | |
0037b49e | 2061 | *ipp = zfsvfs->z_ctldir; |
3558fd73 | 2062 | ASSERT(*ipp != NULL); |
34dc7c2f | 2063 | if (object == ZFSCTL_INO_SNAPDIR) { |
ebe7e575 BB |
2064 | VERIFY(zfsctl_root_lookup(*ipp, "snapshot", ipp, |
2065 | 0, kcred, NULL, NULL) == 0); | |
34dc7c2f | 2066 | } else { |
3558fd73 | 2067 | igrab(*ipp); |
34dc7c2f | 2068 | } |
0037b49e | 2069 | ZFS_EXIT(zfsvfs); |
34dc7c2f BB |
2070 | return (0); |
2071 | } | |
2072 | ||
2073 | gen_mask = -1ULL >> (64 - 8 * i); | |
2074 | ||
29e57d15 | 2075 | dprintf("getting %llu [%llu mask %llx]\n", object, fid_gen, gen_mask); |
0037b49e BB |
2076 | if ((err = zfs_zget(zfsvfs, object, &zp))) { |
2077 | ZFS_EXIT(zfsvfs); | |
34dc7c2f BB |
2078 | return (err); |
2079 | } | |
7938c2ac CC |
2080 | |
2081 | /* Don't export xattr stuff */ | |
2082 | if (zp->z_pflags & ZFS_XATTR) { | |
2083 | iput(ZTOI(zp)); | |
0037b49e | 2084 | ZFS_EXIT(zfsvfs); |
7938c2ac CC |
2085 | return (SET_ERROR(ENOENT)); |
2086 | } | |
2087 | ||
0037b49e | 2088 | (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_GEN(zfsvfs), &zp_gen, |
428870ff BB |
2089 | sizeof (uint64_t)); |
2090 | zp_gen = zp_gen & gen_mask; | |
34dc7c2f BB |
2091 | if (zp_gen == 0) |
2092 | zp_gen = 1; | |
0037b49e | 2093 | if ((fid_gen == 0) && (zfsvfs->z_root == object)) |
0500e835 | 2094 | fid_gen = zp_gen; |
34dc7c2f | 2095 | if (zp->z_unlinked || zp_gen != fid_gen) { |
29e57d15 NB |
2096 | dprintf("znode gen (%llu) != fid gen (%llu)\n", zp_gen, |
2097 | fid_gen); | |
3558fd73 | 2098 | iput(ZTOI(zp)); |
0037b49e | 2099 | ZFS_EXIT(zfsvfs); |
6c253064 | 2100 | return (SET_ERROR(ENOENT)); |
34dc7c2f BB |
2101 | } |
2102 | ||
3558fd73 BB |
2103 | *ipp = ZTOI(zp); |
2104 | if (*ipp) | |
2105 | zfs_inode_update(ITOZ(*ipp)); | |
960e08fe | 2106 | |
0037b49e | 2107 | ZFS_EXIT(zfsvfs); |
34dc7c2f BB |
2108 | return (0); |
2109 | } | |
2110 | ||
2111 | /* | |
0037b49e | 2112 | * Block out VFS ops and close zfsvfs_t |
34dc7c2f BB |
2113 | * |
2114 | * Note, if successful, then we return with the 'z_teardown_lock' and | |
831baf06 KW |
2115 | * 'z_teardown_inactive_lock' write held. We leave ownership of the underlying |
2116 | * dataset and objset intact so that they can be atomically handed off during | |
2117 | * a subsequent rollback or recv operation and the resume thereafter. | |
34dc7c2f BB |
2118 | */ |
2119 | int | |
0037b49e | 2120 | zfs_suspend_fs(zfsvfs_t *zfsvfs) |
34dc7c2f BB |
2121 | { |
2122 | int error; | |
2123 | ||
0037b49e | 2124 | if ((error = zfsvfs_teardown(zfsvfs, B_FALSE)) != 0) |
34dc7c2f | 2125 | return (error); |
7b3e34ba | 2126 | |
34dc7c2f BB |
2127 | return (0); |
2128 | } | |
2129 | ||
2130 | /* | |
8614ddf9 MA |
2131 | * Rebuild SA and release VOPs. Note that ownership of the underlying dataset |
2132 | * is an invariant across any of the operations that can be performed while the | |
2133 | * filesystem was suspended. Whether it succeeded or failed, the preconditions | |
2134 | * are the same: the relevant objset and associated dataset are owned by | |
2135 | * zfsvfs, held, and long held on entry. | |
34dc7c2f BB |
2136 | */ |
2137 | int | |
0037b49e | 2138 | zfs_resume_fs(zfsvfs_t *zfsvfs, dsl_dataset_t *ds) |
34dc7c2f | 2139 | { |
2008e920 | 2140 | int err, err2; |
831baf06 | 2141 | znode_t *zp; |
34dc7c2f | 2142 | |
0037b49e BB |
2143 | ASSERT(RRM_WRITE_HELD(&zfsvfs->z_teardown_lock)); |
2144 | ASSERT(RW_WRITE_HELD(&zfsvfs->z_teardown_inactive_lock)); | |
34dc7c2f | 2145 | |
831baf06 | 2146 | /* |
ec923db2 GM |
2147 | * We already own this, so just update the objset_t, as the one we |
2148 | * had before may have been evicted. | |
831baf06 | 2149 | */ |
8614ddf9 | 2150 | objset_t *os; |
0037b49e | 2151 | VERIFY3P(ds->ds_owner, ==, zfsvfs); |
ec923db2 | 2152 | VERIFY(dsl_dataset_long_held(ds)); |
8614ddf9 | 2153 | VERIFY0(dmu_objset_from_ds(ds, &os)); |
c1fabe79 | 2154 | |
8614ddf9 MA |
2155 | err = zfsvfs_init(zfsvfs, os); |
2156 | if (err != 0) | |
831baf06 | 2157 | goto bail; |
34dc7c2f | 2158 | |
f298b24d | 2159 | VERIFY(zfsvfs_setup(zfsvfs, B_FALSE) == 0); |
c1fabe79 | 2160 | |
0037b49e BB |
2161 | zfs_set_fuid_feature(zfsvfs); |
2162 | zfsvfs->z_rollback_time = jiffies; | |
34dc7c2f | 2163 | |
831baf06 KW |
2164 | /* |
2165 | * Attempt to re-establish all the active inodes with their | |
2166 | * dbufs. If a zfs_rezget() fails, then we unhash the inode | |
2167 | * and mark it stale. This prevents a collision if a new | |
2168 | * inode/object is created which must use the same inode | |
2169 | * number. The stale inode will be be released when the | |
2170 | * VFS prunes the dentry holding the remaining references | |
2171 | * on the stale inode. | |
2172 | */ | |
0037b49e BB |
2173 | mutex_enter(&zfsvfs->z_znodes_lock); |
2174 | for (zp = list_head(&zfsvfs->z_all_znodes); zp; | |
2175 | zp = list_next(&zfsvfs->z_all_znodes, zp)) { | |
2008e920 TC |
2176 | err2 = zfs_rezget(zp); |
2177 | if (err2) { | |
831baf06 KW |
2178 | remove_inode_hash(ZTOI(zp)); |
2179 | zp->z_is_stale = B_TRUE; | |
34dc7c2f | 2180 | } |
34dc7c2f | 2181 | } |
0037b49e | 2182 | mutex_exit(&zfsvfs->z_znodes_lock); |
34dc7c2f | 2183 | |
dcec0a12 AP |
2184 | if (!zfs_is_readonly(zfsvfs) && !zfsvfs->z_unmounted) { |
2185 | /* | |
2186 | * zfs_suspend_fs() could have interrupted freeing | |
2187 | * of dnodes. We need to restart this freeing so | |
2188 | * that we don't "leak" the space. | |
2189 | */ | |
2190 | zfs_unlinked_drain(zfsvfs); | |
2191 | } | |
2192 | ||
428870ff | 2193 | bail: |
7b3e34ba | 2194 | /* release the VFS ops */ |
0037b49e BB |
2195 | rw_exit(&zfsvfs->z_teardown_inactive_lock); |
2196 | rrm_exit(&zfsvfs->z_teardown_lock, FTAG); | |
34dc7c2f BB |
2197 | |
2198 | if (err) { | |
2199 | /* | |
831baf06 KW |
2200 | * Since we couldn't setup the sa framework, try to force |
2201 | * unmount this file system. | |
34dc7c2f | 2202 | */ |
0037b49e BB |
2203 | if (zfsvfs->z_os) |
2204 | (void) zfs_umount(zfsvfs->z_sb); | |
34dc7c2f BB |
2205 | } |
2206 | return (err); | |
2207 | } | |
2208 | ||
34dc7c2f | 2209 | int |
0037b49e | 2210 | zfs_set_version(zfsvfs_t *zfsvfs, uint64_t newvers) |
34dc7c2f BB |
2211 | { |
2212 | int error; | |
0037b49e | 2213 | objset_t *os = zfsvfs->z_os; |
34dc7c2f | 2214 | dmu_tx_t *tx; |
34dc7c2f BB |
2215 | |
2216 | if (newvers < ZPL_VERSION_INITIAL || newvers > ZPL_VERSION) | |
2e528b49 | 2217 | return (SET_ERROR(EINVAL)); |
34dc7c2f | 2218 | |
0037b49e | 2219 | if (newvers < zfsvfs->z_version) |
2e528b49 | 2220 | return (SET_ERROR(EINVAL)); |
34dc7c2f | 2221 | |
428870ff | 2222 | if (zfs_spa_version_map(newvers) > |
0037b49e | 2223 | spa_version(dmu_objset_spa(zfsvfs->z_os))) |
2e528b49 | 2224 | return (SET_ERROR(ENOTSUP)); |
428870ff | 2225 | |
34dc7c2f | 2226 | tx = dmu_tx_create(os); |
9babb374 | 2227 | dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, B_FALSE, ZPL_VERSION_STR); |
0037b49e | 2228 | if (newvers >= ZPL_VERSION_SA && !zfsvfs->z_use_sa) { |
428870ff BB |
2229 | dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, B_TRUE, |
2230 | ZFS_SA_ATTRS); | |
2231 | dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL); | |
2232 | } | |
34dc7c2f BB |
2233 | error = dmu_tx_assign(tx, TXG_WAIT); |
2234 | if (error) { | |
2235 | dmu_tx_abort(tx); | |
9babb374 BB |
2236 | return (error); |
2237 | } | |
428870ff | 2238 | |
9babb374 BB |
2239 | error = zap_update(os, MASTER_NODE_OBJ, ZPL_VERSION_STR, |
2240 | 8, 1, &newvers, tx); | |
2241 | ||
2242 | if (error) { | |
2243 | dmu_tx_commit(tx); | |
2244 | return (error); | |
34dc7c2f | 2245 | } |
34dc7c2f | 2246 | |
0037b49e | 2247 | if (newvers >= ZPL_VERSION_SA && !zfsvfs->z_use_sa) { |
428870ff BB |
2248 | uint64_t sa_obj; |
2249 | ||
0037b49e | 2250 | ASSERT3U(spa_version(dmu_objset_spa(zfsvfs->z_os)), >=, |
428870ff BB |
2251 | SPA_VERSION_SA); |
2252 | sa_obj = zap_create(os, DMU_OT_SA_MASTER_NODE, | |
2253 | DMU_OT_NONE, 0, tx); | |
2254 | ||
2255 | error = zap_add(os, MASTER_NODE_OBJ, | |
2256 | ZFS_SA_ATTRS, 8, 1, &sa_obj, tx); | |
c99c9001 | 2257 | ASSERT0(error); |
428870ff BB |
2258 | |
2259 | VERIFY(0 == sa_set_sa_object(os, sa_obj)); | |
2260 | sa_register_update_callback(os, zfs_sa_upgrade); | |
2261 | } | |
2262 | ||
6f1ffb06 | 2263 | spa_history_log_internal_ds(dmu_objset_ds(os), "upgrade", tx, |
0037b49e | 2264 | "from %llu to %llu", zfsvfs->z_version, newvers); |
9babb374 | 2265 | |
34dc7c2f BB |
2266 | dmu_tx_commit(tx); |
2267 | ||
0037b49e | 2268 | zfsvfs->z_version = newvers; |
2e5dc449 | 2269 | os->os_version = newvers; |
9babb374 | 2270 | |
0037b49e | 2271 | zfs_set_fuid_feature(zfsvfs); |
9babb374 BB |
2272 | |
2273 | return (0); | |
34dc7c2f BB |
2274 | } |
2275 | ||
2276 | /* | |
2277 | * Read a property stored within the master node. | |
2278 | */ | |
2279 | int | |
2280 | zfs_get_zplprop(objset_t *os, zfs_prop_t prop, uint64_t *value) | |
2281 | { | |
2e5dc449 MA |
2282 | uint64_t *cached_copy = NULL; |
2283 | ||
2284 | /* | |
2285 | * Figure out where in the objset_t the cached copy would live, if it | |
2286 | * is available for the requested property. | |
2287 | */ | |
2288 | if (os != NULL) { | |
2289 | switch (prop) { | |
2290 | case ZFS_PROP_VERSION: | |
2291 | cached_copy = &os->os_version; | |
2292 | break; | |
2293 | case ZFS_PROP_NORMALIZE: | |
2294 | cached_copy = &os->os_normalization; | |
2295 | break; | |
2296 | case ZFS_PROP_UTF8ONLY: | |
2297 | cached_copy = &os->os_utf8only; | |
2298 | break; | |
2299 | case ZFS_PROP_CASE: | |
2300 | cached_copy = &os->os_casesensitivity; | |
2301 | break; | |
2302 | default: | |
2303 | break; | |
2304 | } | |
2305 | } | |
2306 | if (cached_copy != NULL && *cached_copy != OBJSET_PROP_UNINITIALIZED) { | |
2307 | *value = *cached_copy; | |
2308 | return (0); | |
2309 | } | |
34dc7c2f BB |
2310 | |
2311 | /* | |
2e5dc449 MA |
2312 | * If the property wasn't cached, look up the file system's value for |
2313 | * the property. For the version property, we look up a slightly | |
2314 | * different string. | |
34dc7c2f | 2315 | */ |
2e5dc449 MA |
2316 | const char *pname; |
2317 | int error = ENOENT; | |
34dc7c2f BB |
2318 | if (prop == ZFS_PROP_VERSION) |
2319 | pname = ZPL_VERSION_STR; | |
2320 | else | |
2321 | pname = zfs_prop_to_name(prop); | |
2322 | ||
87a275d9 AG |
2323 | if (os != NULL) { |
2324 | ASSERT3U(os->os_phys->os_type, ==, DMU_OST_ZFS); | |
b128c09f | 2325 | error = zap_lookup(os, MASTER_NODE_OBJ, pname, 8, 1, value); |
87a275d9 | 2326 | } |
34dc7c2f BB |
2327 | |
2328 | if (error == ENOENT) { | |
2329 | /* No value set, use the default value */ | |
2330 | switch (prop) { | |
2331 | case ZFS_PROP_VERSION: | |
2332 | *value = ZPL_VERSION; | |
2333 | break; | |
2334 | case ZFS_PROP_NORMALIZE: | |
2335 | case ZFS_PROP_UTF8ONLY: | |
2336 | *value = 0; | |
2337 | break; | |
2338 | case ZFS_PROP_CASE: | |
2339 | *value = ZFS_CASE_SENSITIVE; | |
2340 | break; | |
023699cd MM |
2341 | case ZFS_PROP_ACLTYPE: |
2342 | *value = ZFS_ACLTYPE_OFF; | |
2343 | break; | |
34dc7c2f BB |
2344 | default: |
2345 | return (error); | |
2346 | } | |
2347 | error = 0; | |
2348 | } | |
2e5dc449 MA |
2349 | |
2350 | /* | |
2351 | * If one of the methods for getting the property value above worked, | |
2352 | * copy it into the objset_t's cache. | |
2353 | */ | |
2354 | if (error == 0 && cached_copy != NULL) { | |
2355 | *cached_copy = *value; | |
2356 | } | |
2357 | ||
34dc7c2f BB |
2358 | return (error); |
2359 | } | |
3558fd73 | 2360 | |
a08abc1b GM |
2361 | /* |
2362 | * Return true if the coresponding vfs's unmounted flag is set. | |
2363 | * Otherwise return false. | |
2364 | * If this function returns true we know VFS unmount has been initiated. | |
2365 | */ | |
2366 | boolean_t | |
2367 | zfs_get_vfs_flag_unmounted(objset_t *os) | |
2368 | { | |
0037b49e | 2369 | zfsvfs_t *zfvp; |
a08abc1b GM |
2370 | boolean_t unmounted = B_FALSE; |
2371 | ||
2372 | ASSERT(dmu_objset_type(os) == DMU_OST_ZFS); | |
2373 | ||
2374 | mutex_enter(&os->os_user_ptr_lock); | |
2375 | zfvp = dmu_objset_get_user(os); | |
2376 | if (zfvp != NULL && zfvp->z_unmounted) | |
2377 | unmounted = B_TRUE; | |
2378 | mutex_exit(&os->os_user_ptr_lock); | |
2379 | ||
2380 | return (unmounted); | |
2381 | } | |
2382 | ||
3558fd73 BB |
2383 | void |
2384 | zfs_init(void) | |
2385 | { | |
ebe7e575 | 2386 | zfsctl_init(); |
3558fd73 BB |
2387 | zfs_znode_init(); |
2388 | dmu_objset_register_type(DMU_OST_ZFS, zfs_space_delta_cb); | |
2389 | register_filesystem(&zpl_fs_type); | |
2390 | } | |
2391 | ||
2392 | void | |
2393 | zfs_fini(void) | |
2394 | { | |
8e71ab99 CC |
2395 | /* |
2396 | * we don't use outstanding because zpl_posix_acl_free might add more. | |
2397 | */ | |
57ddcda1 | 2398 | taskq_wait(system_delay_taskq); |
8e71ab99 | 2399 | taskq_wait(system_taskq); |
3558fd73 BB |
2400 | unregister_filesystem(&zpl_fs_type); |
2401 | zfs_znode_fini(); | |
ebe7e575 | 2402 | zfsctl_fini(); |
3558fd73 | 2403 | } |
f298b24d | 2404 | |
93ce2b4c | 2405 | #if defined(_KERNEL) |
f298b24d BB |
2406 | EXPORT_SYMBOL(zfs_suspend_fs); |
2407 | EXPORT_SYMBOL(zfs_resume_fs); | |
2408 | EXPORT_SYMBOL(zfs_userspace_one); | |
2409 | EXPORT_SYMBOL(zfs_userspace_many); | |
2410 | EXPORT_SYMBOL(zfs_set_userquota); | |
9c5167d1 NF |
2411 | EXPORT_SYMBOL(zfs_id_overblockquota); |
2412 | EXPORT_SYMBOL(zfs_id_overobjquota); | |
2413 | EXPORT_SYMBOL(zfs_id_overquota); | |
f298b24d BB |
2414 | EXPORT_SYMBOL(zfs_set_version); |
2415 | EXPORT_SYMBOL(zfsvfs_create); | |
2416 | EXPORT_SYMBOL(zfsvfs_free); | |
2417 | EXPORT_SYMBOL(zfs_is_readonly); | |
2418 | EXPORT_SYMBOL(zfs_domount); | |
2419 | EXPORT_SYMBOL(zfs_preumount); | |
2420 | EXPORT_SYMBOL(zfs_umount); | |
2421 | EXPORT_SYMBOL(zfs_remount); | |
2422 | EXPORT_SYMBOL(zfs_statvfs); | |
2423 | EXPORT_SYMBOL(zfs_vget); | |
2424 | EXPORT_SYMBOL(zfs_prune); | |
2425 | #endif |