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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. |
34dc7c2f BB |
23 | */ |
24 | ||
25 | /* Portions Copyright 2007 Jeremy Teo */ | |
26 | ||
34dc7c2f BB |
27 | #ifdef _KERNEL |
28 | #include <sys/types.h> | |
29 | #include <sys/param.h> | |
30 | #include <sys/time.h> | |
31 | #include <sys/systm.h> | |
32 | #include <sys/sysmacros.h> | |
33 | #include <sys/resource.h> | |
34 | #include <sys/mntent.h> | |
35 | #include <sys/mkdev.h> | |
36 | #include <sys/u8_textprep.h> | |
37 | #include <sys/dsl_dataset.h> | |
38 | #include <sys/vfs.h> | |
39 | #include <sys/vfs_opreg.h> | |
40 | #include <sys/vnode.h> | |
41 | #include <sys/file.h> | |
42 | #include <sys/kmem.h> | |
43 | #include <sys/errno.h> | |
44 | #include <sys/unistd.h> | |
45 | #include <sys/mode.h> | |
46 | #include <sys/atomic.h> | |
47 | #include <vm/pvn.h> | |
48 | #include "fs/fs_subr.h" | |
49 | #include <sys/zfs_dir.h> | |
50 | #include <sys/zfs_acl.h> | |
51 | #include <sys/zfs_ioctl.h> | |
52 | #include <sys/zfs_rlock.h> | |
53 | #include <sys/zfs_fuid.h> | |
428870ff | 54 | #include <sys/dnode.h> |
34dc7c2f BB |
55 | #include <sys/fs/zfs.h> |
56 | #include <sys/kidmap.h> | |
57 | #endif /* _KERNEL */ | |
58 | ||
59 | #include <sys/dmu.h> | |
60 | #include <sys/refcount.h> | |
61 | #include <sys/stat.h> | |
62 | #include <sys/zap.h> | |
63 | #include <sys/zfs_znode.h> | |
428870ff BB |
64 | #include <sys/sa.h> |
65 | #include <sys/zfs_sa.h> | |
34dc7c2f BB |
66 | |
67 | #include "zfs_prop.h" | |
428870ff | 68 | #include "zfs_comutil.h" |
34dc7c2f | 69 | |
b128c09f BB |
70 | /* |
71 | * Define ZNODE_STATS to turn on statistic gathering. By default, it is only | |
72 | * turned on when DEBUG is also defined. | |
73 | */ | |
74 | #ifdef DEBUG | |
75 | #define ZNODE_STATS | |
76 | #endif /* DEBUG */ | |
77 | ||
78 | #ifdef ZNODE_STATS | |
79 | #define ZNODE_STAT_ADD(stat) ((stat)++) | |
80 | #else | |
81 | #define ZNODE_STAT_ADD(stat) /* nothing */ | |
82 | #endif /* ZNODE_STATS */ | |
83 | ||
84 | #define POINTER_IS_VALID(p) (!((uintptr_t)(p) & 0x3)) | |
85 | #define POINTER_INVALIDATE(pp) (*(pp) = (void *)((uintptr_t)(*(pp)) | 0x1)) | |
86 | ||
34dc7c2f BB |
87 | /* |
88 | * Functions needed for userland (ie: libzpool) are not put under | |
89 | * #ifdef_KERNEL; the rest of the functions have dependencies | |
90 | * (such as VFS logic) that will not compile easily in userland. | |
91 | */ | |
92 | #ifdef _KERNEL | |
9babb374 BB |
93 | /* |
94 | * Needed to close a small window in zfs_znode_move() that allows the zfsvfs to | |
95 | * be freed before it can be safely accessed. | |
96 | */ | |
97 | krwlock_t zfsvfs_lock; | |
98 | ||
b128c09f | 99 | static kmem_cache_t *znode_cache = NULL; |
34dc7c2f BB |
100 | |
101 | /*ARGSUSED*/ | |
102 | static void | |
103 | znode_evict_error(dmu_buf_t *dbuf, void *user_ptr) | |
104 | { | |
105 | /* | |
106 | * We should never drop all dbuf refs without first clearing | |
107 | * the eviction callback. | |
108 | */ | |
109 | panic("evicting znode %p\n", user_ptr); | |
110 | } | |
111 | ||
112 | /*ARGSUSED*/ | |
113 | static int | |
b128c09f | 114 | zfs_znode_cache_constructor(void *buf, void *arg, int kmflags) |
34dc7c2f BB |
115 | { |
116 | znode_t *zp = buf; | |
117 | ||
b128c09f BB |
118 | ASSERT(!POINTER_IS_VALID(zp->z_zfsvfs)); |
119 | ||
120 | zp->z_vnode = vn_alloc(kmflags); | |
121 | if (zp->z_vnode == NULL) { | |
122 | return (-1); | |
123 | } | |
124 | ZTOV(zp)->v_data = zp; | |
125 | ||
126 | list_link_init(&zp->z_link_node); | |
127 | ||
34dc7c2f | 128 | mutex_init(&zp->z_lock, NULL, MUTEX_DEFAULT, NULL); |
34dc7c2f BB |
129 | rw_init(&zp->z_parent_lock, NULL, RW_DEFAULT, NULL); |
130 | rw_init(&zp->z_name_lock, NULL, RW_DEFAULT, NULL); | |
131 | mutex_init(&zp->z_acl_lock, NULL, MUTEX_DEFAULT, NULL); | |
132 | ||
133 | mutex_init(&zp->z_range_lock, NULL, MUTEX_DEFAULT, NULL); | |
134 | avl_create(&zp->z_range_avl, zfs_range_compare, | |
135 | sizeof (rl_t), offsetof(rl_t, r_node)); | |
136 | ||
b128c09f | 137 | zp->z_dirlocks = NULL; |
45d1cae3 | 138 | zp->z_acl_cached = NULL; |
34dc7c2f BB |
139 | return (0); |
140 | } | |
141 | ||
142 | /*ARGSUSED*/ | |
143 | static void | |
b128c09f | 144 | zfs_znode_cache_destructor(void *buf, void *arg) |
34dc7c2f BB |
145 | { |
146 | znode_t *zp = buf; | |
147 | ||
b128c09f BB |
148 | ASSERT(!POINTER_IS_VALID(zp->z_zfsvfs)); |
149 | ASSERT(ZTOV(zp)->v_data == zp); | |
150 | vn_free(ZTOV(zp)); | |
151 | ASSERT(!list_link_active(&zp->z_link_node)); | |
34dc7c2f | 152 | mutex_destroy(&zp->z_lock); |
34dc7c2f BB |
153 | rw_destroy(&zp->z_parent_lock); |
154 | rw_destroy(&zp->z_name_lock); | |
155 | mutex_destroy(&zp->z_acl_lock); | |
156 | avl_destroy(&zp->z_range_avl); | |
157 | mutex_destroy(&zp->z_range_lock); | |
158 | ||
b128c09f | 159 | ASSERT(zp->z_dirlocks == NULL); |
45d1cae3 | 160 | ASSERT(zp->z_acl_cached == NULL); |
b128c09f BB |
161 | } |
162 | ||
163 | #ifdef ZNODE_STATS | |
164 | static struct { | |
165 | uint64_t zms_zfsvfs_invalid; | |
9babb374 | 166 | uint64_t zms_zfsvfs_recheck1; |
b128c09f | 167 | uint64_t zms_zfsvfs_unmounted; |
9babb374 | 168 | uint64_t zms_zfsvfs_recheck2; |
b128c09f BB |
169 | uint64_t zms_obj_held; |
170 | uint64_t zms_vnode_locked; | |
171 | uint64_t zms_not_only_dnlc; | |
172 | } znode_move_stats; | |
173 | #endif /* ZNODE_STATS */ | |
174 | ||
175 | static void | |
176 | zfs_znode_move_impl(znode_t *ozp, znode_t *nzp) | |
177 | { | |
178 | vnode_t *vp; | |
179 | ||
180 | /* Copy fields. */ | |
181 | nzp->z_zfsvfs = ozp->z_zfsvfs; | |
182 | ||
183 | /* Swap vnodes. */ | |
184 | vp = nzp->z_vnode; | |
185 | nzp->z_vnode = ozp->z_vnode; | |
186 | ozp->z_vnode = vp; /* let destructor free the overwritten vnode */ | |
187 | ZTOV(ozp)->v_data = ozp; | |
188 | ZTOV(nzp)->v_data = nzp; | |
189 | ||
190 | nzp->z_id = ozp->z_id; | |
191 | ASSERT(ozp->z_dirlocks == NULL); /* znode not in use */ | |
192 | ASSERT(avl_numnodes(&ozp->z_range_avl) == 0); | |
193 | nzp->z_unlinked = ozp->z_unlinked; | |
194 | nzp->z_atime_dirty = ozp->z_atime_dirty; | |
195 | nzp->z_zn_prefetch = ozp->z_zn_prefetch; | |
196 | nzp->z_blksz = ozp->z_blksz; | |
197 | nzp->z_seq = ozp->z_seq; | |
198 | nzp->z_mapcnt = ozp->z_mapcnt; | |
199 | nzp->z_last_itx = ozp->z_last_itx; | |
200 | nzp->z_gen = ozp->z_gen; | |
201 | nzp->z_sync_cnt = ozp->z_sync_cnt; | |
428870ff BB |
202 | nzp->z_is_sa = ozp->z_is_sa; |
203 | nzp->z_sa_hdl = ozp->z_sa_hdl; | |
204 | bcopy(ozp->z_atime, nzp->z_atime, sizeof (uint64_t) * 2); | |
205 | nzp->z_links = ozp->z_links; | |
206 | nzp->z_size = ozp->z_size; | |
207 | nzp->z_pflags = ozp->z_pflags; | |
208 | nzp->z_uid = ozp->z_uid; | |
209 | nzp->z_gid = ozp->z_gid; | |
210 | nzp->z_mode = ozp->z_mode; | |
b128c09f | 211 | |
45d1cae3 | 212 | /* |
428870ff BB |
213 | * Since this is just an idle znode and kmem is already dealing with |
214 | * memory pressure, release any cached ACL. | |
45d1cae3 BB |
215 | */ |
216 | if (ozp->z_acl_cached) { | |
217 | zfs_acl_free(ozp->z_acl_cached); | |
218 | ozp->z_acl_cached = NULL; | |
219 | } | |
220 | ||
428870ff | 221 | sa_set_userp(nzp->z_sa_hdl, nzp); |
b128c09f BB |
222 | |
223 | /* | |
224 | * Invalidate the original znode by clearing fields that provide a | |
225 | * pointer back to the znode. Set the low bit of the vfs pointer to | |
226 | * ensure that zfs_znode_move() recognizes the znode as invalid in any | |
227 | * subsequent callback. | |
228 | */ | |
428870ff | 229 | ozp->z_sa_hdl = NULL; |
b128c09f BB |
230 | POINTER_INVALIDATE(&ozp->z_zfsvfs); |
231 | } | |
232 | ||
b128c09f BB |
233 | /*ARGSUSED*/ |
234 | static kmem_cbrc_t | |
235 | zfs_znode_move(void *buf, void *newbuf, size_t size, void *arg) | |
236 | { | |
237 | znode_t *ozp = buf, *nzp = newbuf; | |
238 | zfsvfs_t *zfsvfs; | |
239 | vnode_t *vp; | |
240 | ||
241 | /* | |
242 | * The znode is on the file system's list of known znodes if the vfs | |
243 | * pointer is valid. We set the low bit of the vfs pointer when freeing | |
244 | * the znode to invalidate it, and the memory patterns written by kmem | |
245 | * (baddcafe and deadbeef) set at least one of the two low bits. A newly | |
246 | * created znode sets the vfs pointer last of all to indicate that the | |
247 | * znode is known and in a valid state to be moved by this function. | |
248 | */ | |
249 | zfsvfs = ozp->z_zfsvfs; | |
250 | if (!POINTER_IS_VALID(zfsvfs)) { | |
251 | ZNODE_STAT_ADD(znode_move_stats.zms_zfsvfs_invalid); | |
252 | return (KMEM_CBRC_DONT_KNOW); | |
253 | } | |
254 | ||
255 | /* | |
9babb374 BB |
256 | * Close a small window in which it's possible that the filesystem could |
257 | * be unmounted and freed, and zfsvfs, though valid in the previous | |
258 | * statement, could point to unrelated memory by the time we try to | |
259 | * prevent the filesystem from being unmounted. | |
260 | */ | |
261 | rw_enter(&zfsvfs_lock, RW_WRITER); | |
262 | if (zfsvfs != ozp->z_zfsvfs) { | |
263 | rw_exit(&zfsvfs_lock); | |
264 | ZNODE_STAT_ADD(znode_move_stats.zms_zfsvfs_recheck1); | |
265 | return (KMEM_CBRC_DONT_KNOW); | |
266 | } | |
267 | ||
268 | /* | |
269 | * If the znode is still valid, then so is the file system. We know that | |
270 | * no valid file system can be freed while we hold zfsvfs_lock, so we | |
271 | * can safely ensure that the filesystem is not and will not be | |
272 | * unmounted. The next statement is equivalent to ZFS_ENTER(). | |
b128c09f | 273 | */ |
9babb374 BB |
274 | rrw_enter(&zfsvfs->z_teardown_lock, RW_READER, FTAG); |
275 | if (zfsvfs->z_unmounted) { | |
276 | ZFS_EXIT(zfsvfs); | |
277 | rw_exit(&zfsvfs_lock); | |
b128c09f BB |
278 | ZNODE_STAT_ADD(znode_move_stats.zms_zfsvfs_unmounted); |
279 | return (KMEM_CBRC_DONT_KNOW); | |
280 | } | |
9babb374 | 281 | rw_exit(&zfsvfs_lock); |
b128c09f BB |
282 | |
283 | mutex_enter(&zfsvfs->z_znodes_lock); | |
284 | /* | |
285 | * Recheck the vfs pointer in case the znode was removed just before | |
286 | * acquiring the lock. | |
287 | */ | |
288 | if (zfsvfs != ozp->z_zfsvfs) { | |
289 | mutex_exit(&zfsvfs->z_znodes_lock); | |
290 | ZFS_EXIT(zfsvfs); | |
9babb374 | 291 | ZNODE_STAT_ADD(znode_move_stats.zms_zfsvfs_recheck2); |
b128c09f BB |
292 | return (KMEM_CBRC_DONT_KNOW); |
293 | } | |
294 | ||
295 | /* | |
296 | * At this point we know that as long as we hold z_znodes_lock, the | |
297 | * znode cannot be freed and fields within the znode can be safely | |
298 | * accessed. Now, prevent a race with zfs_zget(). | |
299 | */ | |
300 | if (ZFS_OBJ_HOLD_TRYENTER(zfsvfs, ozp->z_id) == 0) { | |
301 | mutex_exit(&zfsvfs->z_znodes_lock); | |
302 | ZFS_EXIT(zfsvfs); | |
303 | ZNODE_STAT_ADD(znode_move_stats.zms_obj_held); | |
304 | return (KMEM_CBRC_LATER); | |
305 | } | |
306 | ||
307 | vp = ZTOV(ozp); | |
308 | if (mutex_tryenter(&vp->v_lock) == 0) { | |
309 | ZFS_OBJ_HOLD_EXIT(zfsvfs, ozp->z_id); | |
310 | mutex_exit(&zfsvfs->z_znodes_lock); | |
311 | ZFS_EXIT(zfsvfs); | |
312 | ZNODE_STAT_ADD(znode_move_stats.zms_vnode_locked); | |
313 | return (KMEM_CBRC_LATER); | |
314 | } | |
315 | ||
316 | /* Only move znodes that are referenced _only_ by the DNLC. */ | |
317 | if (vp->v_count != 1 || !vn_in_dnlc(vp)) { | |
318 | mutex_exit(&vp->v_lock); | |
319 | ZFS_OBJ_HOLD_EXIT(zfsvfs, ozp->z_id); | |
320 | mutex_exit(&zfsvfs->z_znodes_lock); | |
321 | ZFS_EXIT(zfsvfs); | |
322 | ZNODE_STAT_ADD(znode_move_stats.zms_not_only_dnlc); | |
323 | return (KMEM_CBRC_LATER); | |
324 | } | |
325 | ||
326 | /* | |
327 | * The znode is known and in a valid state to move. We're holding the | |
328 | * locks needed to execute the critical section. | |
329 | */ | |
330 | zfs_znode_move_impl(ozp, nzp); | |
331 | mutex_exit(&vp->v_lock); | |
332 | ZFS_OBJ_HOLD_EXIT(zfsvfs, ozp->z_id); | |
333 | ||
334 | list_link_replace(&ozp->z_link_node, &nzp->z_link_node); | |
335 | mutex_exit(&zfsvfs->z_znodes_lock); | |
336 | ZFS_EXIT(zfsvfs); | |
337 | ||
338 | return (KMEM_CBRC_YES); | |
34dc7c2f BB |
339 | } |
340 | ||
341 | void | |
342 | zfs_znode_init(void) | |
343 | { | |
344 | /* | |
345 | * Initialize zcache | |
346 | */ | |
9babb374 | 347 | rw_init(&zfsvfs_lock, NULL, RW_DEFAULT, NULL); |
34dc7c2f BB |
348 | ASSERT(znode_cache == NULL); |
349 | znode_cache = kmem_cache_create("zfs_znode_cache", | |
350 | sizeof (znode_t), 0, zfs_znode_cache_constructor, | |
351 | zfs_znode_cache_destructor, NULL, NULL, NULL, 0); | |
b128c09f | 352 | kmem_cache_set_move(znode_cache, zfs_znode_move); |
34dc7c2f BB |
353 | } |
354 | ||
355 | void | |
356 | zfs_znode_fini(void) | |
357 | { | |
358 | /* | |
359 | * Cleanup vfs & vnode ops | |
360 | */ | |
361 | zfs_remove_op_tables(); | |
362 | ||
363 | /* | |
364 | * Cleanup zcache | |
365 | */ | |
366 | if (znode_cache) | |
367 | kmem_cache_destroy(znode_cache); | |
368 | znode_cache = NULL; | |
9babb374 | 369 | rw_destroy(&zfsvfs_lock); |
34dc7c2f BB |
370 | } |
371 | ||
372 | struct vnodeops *zfs_dvnodeops; | |
373 | struct vnodeops *zfs_fvnodeops; | |
374 | struct vnodeops *zfs_symvnodeops; | |
375 | struct vnodeops *zfs_xdvnodeops; | |
376 | struct vnodeops *zfs_evnodeops; | |
9babb374 | 377 | struct vnodeops *zfs_sharevnodeops; |
34dc7c2f BB |
378 | |
379 | void | |
380 | zfs_remove_op_tables() | |
381 | { | |
382 | /* | |
383 | * Remove vfs ops | |
384 | */ | |
385 | ASSERT(zfsfstype); | |
386 | (void) vfs_freevfsops_by_type(zfsfstype); | |
387 | zfsfstype = 0; | |
388 | ||
389 | /* | |
390 | * Remove vnode ops | |
391 | */ | |
392 | if (zfs_dvnodeops) | |
393 | vn_freevnodeops(zfs_dvnodeops); | |
394 | if (zfs_fvnodeops) | |
395 | vn_freevnodeops(zfs_fvnodeops); | |
396 | if (zfs_symvnodeops) | |
397 | vn_freevnodeops(zfs_symvnodeops); | |
398 | if (zfs_xdvnodeops) | |
399 | vn_freevnodeops(zfs_xdvnodeops); | |
400 | if (zfs_evnodeops) | |
401 | vn_freevnodeops(zfs_evnodeops); | |
9babb374 BB |
402 | if (zfs_sharevnodeops) |
403 | vn_freevnodeops(zfs_sharevnodeops); | |
34dc7c2f BB |
404 | |
405 | zfs_dvnodeops = NULL; | |
406 | zfs_fvnodeops = NULL; | |
407 | zfs_symvnodeops = NULL; | |
408 | zfs_xdvnodeops = NULL; | |
409 | zfs_evnodeops = NULL; | |
9babb374 | 410 | zfs_sharevnodeops = NULL; |
34dc7c2f BB |
411 | } |
412 | ||
413 | extern const fs_operation_def_t zfs_dvnodeops_template[]; | |
414 | extern const fs_operation_def_t zfs_fvnodeops_template[]; | |
415 | extern const fs_operation_def_t zfs_xdvnodeops_template[]; | |
416 | extern const fs_operation_def_t zfs_symvnodeops_template[]; | |
417 | extern const fs_operation_def_t zfs_evnodeops_template[]; | |
9babb374 | 418 | extern const fs_operation_def_t zfs_sharevnodeops_template[]; |
34dc7c2f BB |
419 | |
420 | int | |
421 | zfs_create_op_tables() | |
422 | { | |
423 | int error; | |
424 | ||
425 | /* | |
426 | * zfs_dvnodeops can be set if mod_remove() calls mod_installfs() | |
427 | * due to a failure to remove the the 2nd modlinkage (zfs_modldrv). | |
428 | * In this case we just return as the ops vectors are already set up. | |
429 | */ | |
430 | if (zfs_dvnodeops) | |
431 | return (0); | |
432 | ||
433 | error = vn_make_ops(MNTTYPE_ZFS, zfs_dvnodeops_template, | |
434 | &zfs_dvnodeops); | |
435 | if (error) | |
436 | return (error); | |
437 | ||
438 | error = vn_make_ops(MNTTYPE_ZFS, zfs_fvnodeops_template, | |
439 | &zfs_fvnodeops); | |
440 | if (error) | |
441 | return (error); | |
442 | ||
443 | error = vn_make_ops(MNTTYPE_ZFS, zfs_symvnodeops_template, | |
444 | &zfs_symvnodeops); | |
445 | if (error) | |
446 | return (error); | |
447 | ||
448 | error = vn_make_ops(MNTTYPE_ZFS, zfs_xdvnodeops_template, | |
449 | &zfs_xdvnodeops); | |
450 | if (error) | |
451 | return (error); | |
452 | ||
453 | error = vn_make_ops(MNTTYPE_ZFS, zfs_evnodeops_template, | |
454 | &zfs_evnodeops); | |
9babb374 BB |
455 | if (error) |
456 | return (error); | |
457 | ||
458 | error = vn_make_ops(MNTTYPE_ZFS, zfs_sharevnodeops_template, | |
459 | &zfs_sharevnodeops); | |
34dc7c2f BB |
460 | |
461 | return (error); | |
462 | } | |
463 | ||
34dc7c2f | 464 | int |
9babb374 | 465 | zfs_create_share_dir(zfsvfs_t *zfsvfs, dmu_tx_t *tx) |
34dc7c2f | 466 | { |
9babb374 BB |
467 | zfs_acl_ids_t acl_ids; |
468 | vattr_t vattr; | |
469 | znode_t *sharezp; | |
470 | vnode_t *vp; | |
471 | znode_t *zp; | |
472 | int error; | |
34dc7c2f | 473 | |
9babb374 BB |
474 | vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; |
475 | vattr.va_type = VDIR; | |
476 | vattr.va_mode = S_IFDIR|0555; | |
477 | vattr.va_uid = crgetuid(kcred); | |
478 | vattr.va_gid = crgetgid(kcred); | |
34dc7c2f | 479 | |
9babb374 BB |
480 | sharezp = kmem_cache_alloc(znode_cache, KM_SLEEP); |
481 | sharezp->z_unlinked = 0; | |
482 | sharezp->z_atime_dirty = 0; | |
483 | sharezp->z_zfsvfs = zfsvfs; | |
428870ff | 484 | sharezp->z_is_sa = zfsvfs->z_use_sa; |
34dc7c2f | 485 | |
9babb374 BB |
486 | vp = ZTOV(sharezp); |
487 | vn_reinit(vp); | |
488 | vp->v_type = VDIR; | |
34dc7c2f | 489 | |
9babb374 BB |
490 | VERIFY(0 == zfs_acl_ids_create(sharezp, IS_ROOT_NODE, &vattr, |
491 | kcred, NULL, &acl_ids)); | |
428870ff | 492 | zfs_mknode(sharezp, &vattr, tx, kcred, IS_ROOT_NODE, &zp, &acl_ids); |
9babb374 BB |
493 | ASSERT3P(zp, ==, sharezp); |
494 | ASSERT(!vn_in_dnlc(ZTOV(sharezp))); /* not valid to move */ | |
495 | POINTER_INVALIDATE(&sharezp->z_zfsvfs); | |
496 | error = zap_add(zfsvfs->z_os, MASTER_NODE_OBJ, | |
497 | ZFS_SHARES_DIR, 8, 1, &sharezp->z_id, tx); | |
498 | zfsvfs->z_shares_dir = sharezp->z_id; | |
499 | ||
500 | zfs_acl_ids_free(&acl_ids); | |
501 | ZTOV(sharezp)->v_count = 0; | |
428870ff | 502 | sa_handle_destroy(sharezp->z_sa_hdl); |
9babb374 | 503 | kmem_cache_free(znode_cache, sharezp); |
34dc7c2f | 504 | |
9babb374 | 505 | return (error); |
34dc7c2f BB |
506 | } |
507 | ||
508 | /* | |
509 | * define a couple of values we need available | |
510 | * for both 64 and 32 bit environments. | |
511 | */ | |
512 | #ifndef NBITSMINOR64 | |
513 | #define NBITSMINOR64 32 | |
514 | #endif | |
515 | #ifndef MAXMAJ64 | |
516 | #define MAXMAJ64 0xffffffffUL | |
517 | #endif | |
518 | #ifndef MAXMIN64 | |
519 | #define MAXMIN64 0xffffffffUL | |
520 | #endif | |
521 | ||
522 | /* | |
523 | * Create special expldev for ZFS private use. | |
524 | * Can't use standard expldev since it doesn't do | |
525 | * what we want. The standard expldev() takes a | |
526 | * dev32_t in LP64 and expands it to a long dev_t. | |
527 | * We need an interface that takes a dev32_t in ILP32 | |
528 | * and expands it to a long dev_t. | |
529 | */ | |
530 | static uint64_t | |
531 | zfs_expldev(dev_t dev) | |
532 | { | |
533 | #ifndef _LP64 | |
534 | major_t major = (major_t)dev >> NBITSMINOR32 & MAXMAJ32; | |
535 | return (((uint64_t)major << NBITSMINOR64) | | |
536 | ((minor_t)dev & MAXMIN32)); | |
537 | #else | |
538 | return (dev); | |
539 | #endif | |
540 | } | |
541 | ||
542 | /* | |
543 | * Special cmpldev for ZFS private use. | |
544 | * Can't use standard cmpldev since it takes | |
545 | * a long dev_t and compresses it to dev32_t in | |
546 | * LP64. We need to do a compaction of a long dev_t | |
547 | * to a dev32_t in ILP32. | |
548 | */ | |
549 | dev_t | |
550 | zfs_cmpldev(uint64_t dev) | |
551 | { | |
552 | #ifndef _LP64 | |
553 | minor_t minor = (minor_t)dev & MAXMIN64; | |
554 | major_t major = (major_t)(dev >> NBITSMINOR64) & MAXMAJ64; | |
555 | ||
556 | if (major > MAXMAJ32 || minor > MAXMIN32) | |
557 | return (NODEV32); | |
558 | ||
559 | return (((dev32_t)major << NBITSMINOR32) | minor); | |
560 | #else | |
561 | return (dev); | |
562 | #endif | |
563 | } | |
564 | ||
565 | static void | |
428870ff BB |
566 | zfs_znode_sa_init(zfsvfs_t *zfsvfs, znode_t *zp, |
567 | dmu_buf_t *db, dmu_object_type_t obj_type, sa_handle_t *sa_hdl) | |
34dc7c2f | 568 | { |
b128c09f BB |
569 | ASSERT(!POINTER_IS_VALID(zp->z_zfsvfs) || (zfsvfs == zp->z_zfsvfs)); |
570 | ASSERT(MUTEX_HELD(ZFS_OBJ_MUTEX(zfsvfs, zp->z_id))); | |
34dc7c2f BB |
571 | |
572 | mutex_enter(&zp->z_lock); | |
573 | ||
428870ff BB |
574 | ASSERT(zp->z_sa_hdl == NULL); |
575 | ASSERT(zp->z_acl_cached == NULL); | |
576 | if (sa_hdl == NULL) { | |
577 | VERIFY(0 == sa_handle_get_from_db(zfsvfs->z_os, db, zp, | |
578 | SA_HDL_SHARED, &zp->z_sa_hdl)); | |
579 | } else { | |
580 | zp->z_sa_hdl = sa_hdl; | |
581 | sa_set_userp(sa_hdl, zp); | |
582 | } | |
34dc7c2f | 583 | |
428870ff | 584 | zp->z_is_sa = (obj_type == DMU_OT_SA) ? B_TRUE : B_FALSE; |
34dc7c2f BB |
585 | |
586 | /* | |
587 | * Slap on VROOT if we are the root znode | |
588 | */ | |
589 | if (zp->z_id == zfsvfs->z_root) | |
590 | ZTOV(zp)->v_flag |= VROOT; | |
591 | ||
592 | mutex_exit(&zp->z_lock); | |
593 | vn_exists(ZTOV(zp)); | |
594 | } | |
595 | ||
596 | void | |
597 | zfs_znode_dmu_fini(znode_t *zp) | |
598 | { | |
b128c09f BB |
599 | ASSERT(MUTEX_HELD(ZFS_OBJ_MUTEX(zp->z_zfsvfs, zp->z_id)) || |
600 | zp->z_unlinked || | |
34dc7c2f | 601 | RW_WRITE_HELD(&zp->z_zfsvfs->z_teardown_inactive_lock)); |
428870ff BB |
602 | |
603 | sa_handle_destroy(zp->z_sa_hdl); | |
604 | zp->z_sa_hdl = NULL; | |
34dc7c2f BB |
605 | } |
606 | ||
607 | /* | |
608 | * Construct a new znode/vnode and intialize. | |
609 | * | |
610 | * This does not do a call to dmu_set_user() that is | |
611 | * up to the caller to do, in case you don't want to | |
612 | * return the znode | |
613 | */ | |
614 | static znode_t * | |
428870ff BB |
615 | zfs_znode_alloc(zfsvfs_t *zfsvfs, dmu_buf_t *db, int blksz, |
616 | dmu_object_type_t obj_type, sa_handle_t *hdl) | |
34dc7c2f BB |
617 | { |
618 | znode_t *zp; | |
619 | vnode_t *vp; | |
428870ff BB |
620 | uint64_t mode; |
621 | uint64_t parent; | |
622 | uint64_t uid, gid; | |
623 | sa_bulk_attr_t bulk[9]; | |
624 | int count = 0; | |
34dc7c2f BB |
625 | |
626 | zp = kmem_cache_alloc(znode_cache, KM_SLEEP); | |
627 | ||
628 | ASSERT(zp->z_dirlocks == NULL); | |
b128c09f | 629 | ASSERT(!POINTER_IS_VALID(zp->z_zfsvfs)); |
34dc7c2f | 630 | |
b128c09f BB |
631 | /* |
632 | * Defer setting z_zfsvfs until the znode is ready to be a candidate for | |
633 | * the zfs_znode_move() callback. | |
634 | */ | |
428870ff | 635 | zp->z_sa_hdl = NULL; |
34dc7c2f BB |
636 | zp->z_unlinked = 0; |
637 | zp->z_atime_dirty = 0; | |
638 | zp->z_mapcnt = 0; | |
639 | zp->z_last_itx = 0; | |
640 | zp->z_id = db->db_object; | |
641 | zp->z_blksz = blksz; | |
642 | zp->z_seq = 0x7A4653; | |
643 | zp->z_sync_cnt = 0; | |
644 | ||
645 | vp = ZTOV(zp); | |
646 | vn_reinit(vp); | |
647 | ||
428870ff BB |
648 | zfs_znode_sa_init(zfsvfs, zp, db, obj_type, hdl); |
649 | ||
650 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zfsvfs), NULL, &mode, 8); | |
651 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zfsvfs), NULL, &zp->z_gen, 8); | |
652 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zfsvfs), NULL, | |
653 | &zp->z_size, 8); | |
654 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_LINKS(zfsvfs), NULL, | |
655 | &zp->z_links, 8); | |
656 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), NULL, | |
657 | &zp->z_pflags, 8); | |
658 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_PARENT(zfsvfs), NULL, &parent, 8); | |
659 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zfsvfs), NULL, | |
660 | &zp->z_atime, 16); | |
661 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zfsvfs), NULL, | |
662 | &uid, 8); | |
663 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zfsvfs), NULL, | |
664 | &gid, 8); | |
665 | ||
666 | if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count) != 0 || zp->z_gen == 0) { | |
667 | if (hdl == NULL) | |
668 | sa_handle_destroy(zp->z_sa_hdl); | |
669 | kmem_cache_free(znode_cache, zp); | |
670 | return (NULL); | |
671 | } | |
34dc7c2f | 672 | |
428870ff BB |
673 | zp->z_uid = zfs_fuid_map_id(zfsvfs, uid, CRED(), ZFS_OWNER); |
674 | zp->z_gid = zfs_fuid_map_id(zfsvfs, gid, CRED(), ZFS_GROUP); | |
675 | zp->z_mode = mode; | |
34dc7c2f | 676 | vp->v_vfsp = zfsvfs->z_parent->z_vfs; |
428870ff BB |
677 | |
678 | vp->v_type = IFTOVT((mode_t)mode); | |
34dc7c2f BB |
679 | |
680 | switch (vp->v_type) { | |
681 | case VDIR: | |
428870ff | 682 | if (zp->z_pflags & ZFS_XATTR) { |
34dc7c2f BB |
683 | vn_setops(vp, zfs_xdvnodeops); |
684 | vp->v_flag |= V_XATTRDIR; | |
685 | } else { | |
686 | vn_setops(vp, zfs_dvnodeops); | |
687 | } | |
688 | zp->z_zn_prefetch = B_TRUE; /* z_prefetch default is enabled */ | |
689 | break; | |
690 | case VBLK: | |
691 | case VCHR: | |
428870ff BB |
692 | { |
693 | uint64_t rdev; | |
694 | VERIFY(sa_lookup(zp->z_sa_hdl, SA_ZPL_RDEV(zfsvfs), | |
695 | &rdev, sizeof (rdev)) == 0); | |
696 | ||
697 | vp->v_rdev = zfs_cmpldev(rdev); | |
698 | } | |
34dc7c2f BB |
699 | /*FALLTHROUGH*/ |
700 | case VFIFO: | |
701 | case VSOCK: | |
702 | case VDOOR: | |
703 | vn_setops(vp, zfs_fvnodeops); | |
704 | break; | |
705 | case VREG: | |
706 | vp->v_flag |= VMODSORT; | |
428870ff BB |
707 | if (parent == zfsvfs->z_shares_dir) { |
708 | ASSERT(uid == 0 && gid == 0); | |
9babb374 | 709 | vn_setops(vp, zfs_sharevnodeops); |
428870ff | 710 | } else { |
9babb374 | 711 | vn_setops(vp, zfs_fvnodeops); |
428870ff | 712 | } |
34dc7c2f BB |
713 | break; |
714 | case VLNK: | |
715 | vn_setops(vp, zfs_symvnodeops); | |
716 | break; | |
717 | default: | |
718 | vn_setops(vp, zfs_evnodeops); | |
719 | break; | |
720 | } | |
721 | ||
b128c09f BB |
722 | mutex_enter(&zfsvfs->z_znodes_lock); |
723 | list_insert_tail(&zfsvfs->z_all_znodes, zp); | |
724 | membar_producer(); | |
725 | /* | |
726 | * Everything else must be valid before assigning z_zfsvfs makes the | |
727 | * znode eligible for zfs_znode_move(). | |
728 | */ | |
729 | zp->z_zfsvfs = zfsvfs; | |
730 | mutex_exit(&zfsvfs->z_znodes_lock); | |
731 | ||
34dc7c2f BB |
732 | VFS_HOLD(zfsvfs->z_vfs); |
733 | return (zp); | |
734 | } | |
735 | ||
428870ff BB |
736 | static uint64_t empty_xattr; |
737 | static uint64_t pad[4]; | |
738 | static zfs_acl_phys_t acl_phys; | |
34dc7c2f BB |
739 | /* |
740 | * Create a new DMU object to hold a zfs znode. | |
741 | * | |
742 | * IN: dzp - parent directory for new znode | |
743 | * vap - file attributes for new znode | |
744 | * tx - dmu transaction id for zap operations | |
745 | * cr - credentials of caller | |
746 | * flag - flags: | |
747 | * IS_ROOT_NODE - new object will be root | |
748 | * IS_XATTR - new object is an attribute | |
34dc7c2f BB |
749 | * bonuslen - length of bonus buffer |
750 | * setaclp - File/Dir initial ACL | |
751 | * fuidp - Tracks fuid allocation. | |
752 | * | |
753 | * OUT: zpp - allocated znode | |
754 | * | |
755 | */ | |
756 | void | |
757 | zfs_mknode(znode_t *dzp, vattr_t *vap, dmu_tx_t *tx, cred_t *cr, | |
428870ff | 758 | uint_t flag, znode_t **zpp, zfs_acl_ids_t *acl_ids) |
34dc7c2f | 759 | { |
428870ff BB |
760 | uint64_t crtime[2], atime[2], mtime[2], ctime[2]; |
761 | uint64_t mode, size, links, parent, pflags; | |
762 | uint64_t dzp_pflags = 0; | |
763 | uint64_t rdev = 0; | |
34dc7c2f | 764 | zfsvfs_t *zfsvfs = dzp->z_zfsvfs; |
428870ff | 765 | dmu_buf_t *db; |
34dc7c2f BB |
766 | timestruc_t now; |
767 | uint64_t gen, obj; | |
768 | int err; | |
428870ff BB |
769 | int bonuslen; |
770 | sa_handle_t *sa_hdl; | |
771 | dmu_object_type_t obj_type; | |
772 | sa_bulk_attr_t sa_attrs[ZPL_END]; | |
773 | int cnt = 0; | |
774 | zfs_acl_locator_cb_t locate = { 0 }; | |
34dc7c2f BB |
775 | |
776 | ASSERT(vap && (vap->va_mask & (AT_TYPE|AT_MODE)) == (AT_TYPE|AT_MODE)); | |
777 | ||
fb5f0bc8 | 778 | if (zfsvfs->z_replay) { |
34dc7c2f | 779 | obj = vap->va_nodeid; |
34dc7c2f BB |
780 | now = vap->va_ctime; /* see zfs_replay_create() */ |
781 | gen = vap->va_nblocks; /* ditto */ | |
782 | } else { | |
783 | obj = 0; | |
784 | gethrestime(&now); | |
785 | gen = dmu_tx_get_txg(tx); | |
786 | } | |
787 | ||
428870ff BB |
788 | obj_type = zfsvfs->z_use_sa ? DMU_OT_SA : DMU_OT_ZNODE; |
789 | bonuslen = (obj_type == DMU_OT_SA) ? | |
790 | DN_MAX_BONUSLEN : ZFS_OLD_ZNODE_PHYS_SIZE; | |
791 | ||
34dc7c2f BB |
792 | /* |
793 | * Create a new DMU object. | |
794 | */ | |
795 | /* | |
796 | * There's currently no mechanism for pre-reading the blocks that will | |
797 | * be to needed allocate a new object, so we accept the small chance | |
798 | * that there will be an i/o error and we will fail one of the | |
799 | * assertions below. | |
800 | */ | |
801 | if (vap->va_type == VDIR) { | |
428870ff | 802 | if (zfsvfs->z_replay) { |
34dc7c2f BB |
803 | err = zap_create_claim_norm(zfsvfs->z_os, obj, |
804 | zfsvfs->z_norm, DMU_OT_DIRECTORY_CONTENTS, | |
428870ff | 805 | obj_type, bonuslen, tx); |
34dc7c2f BB |
806 | ASSERT3U(err, ==, 0); |
807 | } else { | |
808 | obj = zap_create_norm(zfsvfs->z_os, | |
809 | zfsvfs->z_norm, DMU_OT_DIRECTORY_CONTENTS, | |
428870ff | 810 | obj_type, bonuslen, tx); |
34dc7c2f BB |
811 | } |
812 | } else { | |
428870ff | 813 | if (zfsvfs->z_replay) { |
34dc7c2f BB |
814 | err = dmu_object_claim(zfsvfs->z_os, obj, |
815 | DMU_OT_PLAIN_FILE_CONTENTS, 0, | |
428870ff | 816 | obj_type, bonuslen, tx); |
34dc7c2f BB |
817 | ASSERT3U(err, ==, 0); |
818 | } else { | |
819 | obj = dmu_object_alloc(zfsvfs->z_os, | |
820 | DMU_OT_PLAIN_FILE_CONTENTS, 0, | |
428870ff | 821 | obj_type, bonuslen, tx); |
34dc7c2f BB |
822 | } |
823 | } | |
34dc7c2f | 824 | |
428870ff BB |
825 | ZFS_OBJ_HOLD_ENTER(zfsvfs, obj); |
826 | VERIFY(0 == sa_buf_hold(zfsvfs->z_os, obj, NULL, &db)); | |
34dc7c2f BB |
827 | |
828 | /* | |
829 | * If this is the root, fix up the half-initialized parent pointer | |
830 | * to reference the just-allocated physical data area. | |
831 | */ | |
832 | if (flag & IS_ROOT_NODE) { | |
34dc7c2f | 833 | dzp->z_id = obj; |
428870ff BB |
834 | } else { |
835 | dzp_pflags = dzp->z_pflags; | |
34dc7c2f BB |
836 | } |
837 | ||
838 | /* | |
839 | * If parent is an xattr, so am I. | |
840 | */ | |
428870ff | 841 | if (dzp_pflags & ZFS_XATTR) { |
34dc7c2f | 842 | flag |= IS_XATTR; |
34dc7c2f BB |
843 | } |
844 | ||
845 | if (zfsvfs->z_use_fuids) | |
428870ff BB |
846 | pflags = ZFS_ARCHIVE | ZFS_AV_MODIFIED; |
847 | else | |
848 | pflags = 0; | |
34dc7c2f BB |
849 | |
850 | if (vap->va_type == VDIR) { | |
428870ff BB |
851 | size = 2; /* contents ("." and "..") */ |
852 | links = (flag & (IS_ROOT_NODE | IS_XATTR)) ? 2 : 1; | |
853 | } else { | |
854 | size = links = 0; | |
34dc7c2f BB |
855 | } |
856 | ||
428870ff BB |
857 | if (vap->va_type == VBLK || vap->va_type == VCHR) { |
858 | rdev = zfs_expldev(vap->va_rdev); | |
859 | } | |
860 | ||
861 | parent = dzp->z_id; | |
862 | mode = acl_ids->z_mode; | |
34dc7c2f | 863 | if (flag & IS_XATTR) |
428870ff | 864 | pflags |= ZFS_XATTR; |
34dc7c2f | 865 | |
428870ff BB |
866 | /* |
867 | * No execs denied will be deterimed when zfs_mode_compute() is called. | |
868 | */ | |
869 | pflags |= acl_ids->z_aclp->z_hints & | |
870 | (ZFS_ACL_TRIVIAL|ZFS_INHERIT_ACE|ZFS_ACL_AUTO_INHERIT| | |
871 | ZFS_ACL_DEFAULTED|ZFS_ACL_PROTECTED); | |
34dc7c2f | 872 | |
428870ff BB |
873 | ZFS_TIME_ENCODE(&now, crtime); |
874 | ZFS_TIME_ENCODE(&now, ctime); | |
34dc7c2f BB |
875 | |
876 | if (vap->va_mask & AT_ATIME) { | |
428870ff | 877 | ZFS_TIME_ENCODE(&vap->va_atime, atime); |
34dc7c2f | 878 | } else { |
428870ff | 879 | ZFS_TIME_ENCODE(&now, atime); |
34dc7c2f BB |
880 | } |
881 | ||
882 | if (vap->va_mask & AT_MTIME) { | |
428870ff BB |
883 | ZFS_TIME_ENCODE(&vap->va_mtime, mtime); |
884 | } else { | |
885 | ZFS_TIME_ENCODE(&now, mtime); | |
886 | } | |
887 | ||
888 | /* Now add in all of the "SA" attributes */ | |
889 | VERIFY(0 == sa_handle_get_from_db(zfsvfs->z_os, db, NULL, SA_HDL_SHARED, | |
890 | &sa_hdl)); | |
891 | ||
892 | /* | |
893 | * Setup the array of attributes to be replaced/set on the new file | |
894 | * | |
895 | * order for DMU_OT_ZNODE is critical since it needs to be constructed | |
896 | * in the old znode_phys_t format. Don't change this ordering | |
897 | */ | |
898 | ||
899 | if (obj_type == DMU_OT_ZNODE) { | |
900 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ATIME(zfsvfs), | |
901 | NULL, &atime, 16); | |
902 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MTIME(zfsvfs), | |
903 | NULL, &mtime, 16); | |
904 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CTIME(zfsvfs), | |
905 | NULL, &ctime, 16); | |
906 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CRTIME(zfsvfs), | |
907 | NULL, &crtime, 16); | |
908 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GEN(zfsvfs), | |
909 | NULL, &gen, 8); | |
910 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MODE(zfsvfs), | |
911 | NULL, &mode, 8); | |
912 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_SIZE(zfsvfs), | |
913 | NULL, &size, 8); | |
914 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PARENT(zfsvfs), | |
915 | NULL, &parent, 8); | |
34dc7c2f | 916 | } else { |
428870ff BB |
917 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MODE(zfsvfs), |
918 | NULL, &mode, 8); | |
919 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_SIZE(zfsvfs), | |
920 | NULL, &size, 8); | |
921 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GEN(zfsvfs), | |
922 | NULL, &gen, 8); | |
923 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_UID(zfsvfs), NULL, | |
924 | &acl_ids->z_fuid, 8); | |
925 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GID(zfsvfs), NULL, | |
926 | &acl_ids->z_fgid, 8); | |
927 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PARENT(zfsvfs), | |
928 | NULL, &parent, 8); | |
929 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_FLAGS(zfsvfs), | |
930 | NULL, &pflags, 8); | |
931 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ATIME(zfsvfs), | |
932 | NULL, &atime, 16); | |
933 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MTIME(zfsvfs), | |
934 | NULL, &mtime, 16); | |
935 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CTIME(zfsvfs), | |
936 | NULL, &ctime, 16); | |
937 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CRTIME(zfsvfs), | |
938 | NULL, &crtime, 16); | |
939 | } | |
940 | ||
941 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_LINKS(zfsvfs), NULL, &links, 8); | |
942 | ||
943 | if (obj_type == DMU_OT_ZNODE) { | |
944 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_XATTR(zfsvfs), NULL, | |
945 | &empty_xattr, 8); | |
34dc7c2f | 946 | } |
428870ff BB |
947 | if (obj_type == DMU_OT_ZNODE || |
948 | (vap->va_type == VBLK || vap->va_type == VCHR)) { | |
949 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_RDEV(zfsvfs), | |
950 | NULL, &rdev, 8); | |
951 | ||
952 | } | |
953 | if (obj_type == DMU_OT_ZNODE) { | |
954 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_FLAGS(zfsvfs), | |
955 | NULL, &pflags, 8); | |
956 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_UID(zfsvfs), NULL, | |
957 | &acl_ids->z_fuid, 8); | |
958 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GID(zfsvfs), NULL, | |
959 | &acl_ids->z_fgid, 8); | |
960 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PAD(zfsvfs), NULL, pad, | |
961 | sizeof (uint64_t) * 4); | |
962 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ZNODE_ACL(zfsvfs), NULL, | |
963 | &acl_phys, sizeof (zfs_acl_phys_t)); | |
964 | } else if (acl_ids->z_aclp->z_version >= ZFS_ACL_VERSION_FUID) { | |
965 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_DACL_COUNT(zfsvfs), NULL, | |
966 | &acl_ids->z_aclp->z_acl_count, 8); | |
967 | locate.cb_aclp = acl_ids->z_aclp; | |
968 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_DACL_ACES(zfsvfs), | |
969 | zfs_acl_data_locator, &locate, | |
970 | acl_ids->z_aclp->z_acl_bytes); | |
971 | mode = zfs_mode_compute(mode, acl_ids->z_aclp, &pflags, | |
972 | acl_ids->z_fuid, acl_ids->z_fgid); | |
973 | } | |
974 | ||
975 | VERIFY(sa_replace_all_by_template(sa_hdl, sa_attrs, cnt, tx) == 0); | |
34dc7c2f | 976 | |
34dc7c2f | 977 | if (!(flag & IS_ROOT_NODE)) { |
428870ff BB |
978 | *zpp = zfs_znode_alloc(zfsvfs, db, 0, obj_type, sa_hdl); |
979 | ASSERT(*zpp != NULL); | |
34dc7c2f BB |
980 | } else { |
981 | /* | |
982 | * If we are creating the root node, the "parent" we | |
983 | * passed in is the znode for the root. | |
984 | */ | |
985 | *zpp = dzp; | |
428870ff BB |
986 | |
987 | (*zpp)->z_sa_hdl = sa_hdl; | |
34dc7c2f | 988 | } |
428870ff BB |
989 | |
990 | (*zpp)->z_pflags = pflags; | |
991 | (*zpp)->z_mode = mode; | |
992 | ||
9babb374 | 993 | if (vap->va_mask & AT_XVATTR) |
428870ff BB |
994 | zfs_xvattr_set(*zpp, (xvattr_t *)vap, tx); |
995 | ||
996 | if (obj_type == DMU_OT_ZNODE || | |
997 | acl_ids->z_aclp->z_version < ZFS_ACL_VERSION_FUID) { | |
998 | err = zfs_aclset_common(*zpp, acl_ids->z_aclp, cr, tx); | |
999 | ASSERT3P(err, ==, 0); | |
1000 | } | |
1001 | ZFS_OBJ_HOLD_EXIT(zfsvfs, obj); | |
34dc7c2f BB |
1002 | } |
1003 | ||
428870ff BB |
1004 | /* |
1005 | * zfs_xvattr_set only updates the in-core attributes | |
1006 | * it is assumed the caller will be doing an sa_bulk_update | |
1007 | * to push the changes out | |
1008 | */ | |
34dc7c2f | 1009 | void |
428870ff | 1010 | zfs_xvattr_set(znode_t *zp, xvattr_t *xvap, dmu_tx_t *tx) |
34dc7c2f BB |
1011 | { |
1012 | xoptattr_t *xoap; | |
1013 | ||
1014 | xoap = xva_getxoptattr(xvap); | |
1015 | ASSERT(xoap); | |
1016 | ||
1017 | if (XVA_ISSET_REQ(xvap, XAT_CREATETIME)) { | |
428870ff BB |
1018 | uint64_t times[2]; |
1019 | ZFS_TIME_ENCODE(&xoap->xoa_createtime, times); | |
1020 | (void) sa_update(zp->z_sa_hdl, SA_ZPL_CRTIME(zp->z_zfsvfs), | |
1021 | ×, sizeof (times), tx); | |
34dc7c2f BB |
1022 | XVA_SET_RTN(xvap, XAT_CREATETIME); |
1023 | } | |
1024 | if (XVA_ISSET_REQ(xvap, XAT_READONLY)) { | |
428870ff BB |
1025 | ZFS_ATTR_SET(zp, ZFS_READONLY, xoap->xoa_readonly, |
1026 | zp->z_pflags, tx); | |
34dc7c2f BB |
1027 | XVA_SET_RTN(xvap, XAT_READONLY); |
1028 | } | |
1029 | if (XVA_ISSET_REQ(xvap, XAT_HIDDEN)) { | |
428870ff BB |
1030 | ZFS_ATTR_SET(zp, ZFS_HIDDEN, xoap->xoa_hidden, |
1031 | zp->z_pflags, tx); | |
34dc7c2f BB |
1032 | XVA_SET_RTN(xvap, XAT_HIDDEN); |
1033 | } | |
1034 | if (XVA_ISSET_REQ(xvap, XAT_SYSTEM)) { | |
428870ff BB |
1035 | ZFS_ATTR_SET(zp, ZFS_SYSTEM, xoap->xoa_system, |
1036 | zp->z_pflags, tx); | |
34dc7c2f BB |
1037 | XVA_SET_RTN(xvap, XAT_SYSTEM); |
1038 | } | |
1039 | if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE)) { | |
428870ff BB |
1040 | ZFS_ATTR_SET(zp, ZFS_ARCHIVE, xoap->xoa_archive, |
1041 | zp->z_pflags, tx); | |
34dc7c2f BB |
1042 | XVA_SET_RTN(xvap, XAT_ARCHIVE); |
1043 | } | |
1044 | if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE)) { | |
428870ff BB |
1045 | ZFS_ATTR_SET(zp, ZFS_IMMUTABLE, xoap->xoa_immutable, |
1046 | zp->z_pflags, tx); | |
34dc7c2f BB |
1047 | XVA_SET_RTN(xvap, XAT_IMMUTABLE); |
1048 | } | |
1049 | if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK)) { | |
428870ff BB |
1050 | ZFS_ATTR_SET(zp, ZFS_NOUNLINK, xoap->xoa_nounlink, |
1051 | zp->z_pflags, tx); | |
34dc7c2f BB |
1052 | XVA_SET_RTN(xvap, XAT_NOUNLINK); |
1053 | } | |
1054 | if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY)) { | |
428870ff BB |
1055 | ZFS_ATTR_SET(zp, ZFS_APPENDONLY, xoap->xoa_appendonly, |
1056 | zp->z_pflags, tx); | |
34dc7c2f BB |
1057 | XVA_SET_RTN(xvap, XAT_APPENDONLY); |
1058 | } | |
1059 | if (XVA_ISSET_REQ(xvap, XAT_NODUMP)) { | |
428870ff BB |
1060 | ZFS_ATTR_SET(zp, ZFS_NODUMP, xoap->xoa_nodump, |
1061 | zp->z_pflags, tx); | |
34dc7c2f BB |
1062 | XVA_SET_RTN(xvap, XAT_NODUMP); |
1063 | } | |
1064 | if (XVA_ISSET_REQ(xvap, XAT_OPAQUE)) { | |
428870ff BB |
1065 | ZFS_ATTR_SET(zp, ZFS_OPAQUE, xoap->xoa_opaque, |
1066 | zp->z_pflags, tx); | |
34dc7c2f BB |
1067 | XVA_SET_RTN(xvap, XAT_OPAQUE); |
1068 | } | |
1069 | if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED)) { | |
1070 | ZFS_ATTR_SET(zp, ZFS_AV_QUARANTINED, | |
428870ff | 1071 | xoap->xoa_av_quarantined, zp->z_pflags, tx); |
34dc7c2f BB |
1072 | XVA_SET_RTN(xvap, XAT_AV_QUARANTINED); |
1073 | } | |
1074 | if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED)) { | |
428870ff BB |
1075 | ZFS_ATTR_SET(zp, ZFS_AV_MODIFIED, xoap->xoa_av_modified, |
1076 | zp->z_pflags, tx); | |
34dc7c2f BB |
1077 | XVA_SET_RTN(xvap, XAT_AV_MODIFIED); |
1078 | } | |
1079 | if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP)) { | |
428870ff | 1080 | zfs_sa_set_scanstamp(zp, xvap, tx); |
34dc7c2f BB |
1081 | XVA_SET_RTN(xvap, XAT_AV_SCANSTAMP); |
1082 | } | |
428870ff BB |
1083 | if (XVA_ISSET_REQ(xvap, XAT_REPARSE)) { |
1084 | ZFS_ATTR_SET(zp, ZFS_REPARSE, xoap->xoa_reparse, | |
1085 | zp->z_pflags, tx); | |
1086 | XVA_SET_RTN(xvap, XAT_REPARSE); | |
1087 | } | |
34dc7c2f BB |
1088 | } |
1089 | ||
1090 | int | |
1091 | zfs_zget(zfsvfs_t *zfsvfs, uint64_t obj_num, znode_t **zpp) | |
1092 | { | |
1093 | dmu_object_info_t doi; | |
1094 | dmu_buf_t *db; | |
1095 | znode_t *zp; | |
1096 | int err; | |
428870ff | 1097 | sa_handle_t *hdl; |
34dc7c2f BB |
1098 | |
1099 | *zpp = NULL; | |
1100 | ||
1101 | ZFS_OBJ_HOLD_ENTER(zfsvfs, obj_num); | |
1102 | ||
428870ff | 1103 | err = sa_buf_hold(zfsvfs->z_os, obj_num, NULL, &db); |
34dc7c2f BB |
1104 | if (err) { |
1105 | ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); | |
1106 | return (err); | |
1107 | } | |
1108 | ||
1109 | dmu_object_info_from_db(db, &doi); | |
428870ff BB |
1110 | if (doi.doi_bonus_type != DMU_OT_SA && |
1111 | (doi.doi_bonus_type != DMU_OT_ZNODE || | |
1112 | (doi.doi_bonus_type == DMU_OT_ZNODE && | |
1113 | doi.doi_bonus_size < sizeof (znode_phys_t)))) { | |
1114 | sa_buf_rele(db, NULL); | |
34dc7c2f BB |
1115 | ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); |
1116 | return (EINVAL); | |
1117 | } | |
1118 | ||
428870ff BB |
1119 | hdl = dmu_buf_get_user(db); |
1120 | if (hdl != NULL) { | |
1121 | zp = sa_get_userdata(hdl); | |
1122 | ||
34dc7c2f BB |
1123 | |
1124 | /* | |
428870ff BB |
1125 | * Since "SA" does immediate eviction we |
1126 | * should never find a sa handle that doesn't | |
1127 | * know about the znode. | |
34dc7c2f | 1128 | */ |
428870ff BB |
1129 | |
1130 | ASSERT3P(zp, !=, NULL); | |
1131 | ||
1132 | mutex_enter(&zp->z_lock); | |
34dc7c2f BB |
1133 | ASSERT3U(zp->z_id, ==, obj_num); |
1134 | if (zp->z_unlinked) { | |
1135 | err = ENOENT; | |
1136 | } else { | |
1137 | VN_HOLD(ZTOV(zp)); | |
1138 | *zpp = zp; | |
1139 | err = 0; | |
1140 | } | |
428870ff | 1141 | sa_buf_rele(db, NULL); |
34dc7c2f BB |
1142 | mutex_exit(&zp->z_lock); |
1143 | ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); | |
1144 | return (err); | |
1145 | } | |
1146 | ||
1147 | /* | |
1148 | * Not found create new znode/vnode | |
428870ff BB |
1149 | * but only if file exists. |
1150 | * | |
1151 | * There is a small window where zfs_vget() could | |
1152 | * find this object while a file create is still in | |
1153 | * progress. This is checked for in zfs_znode_alloc() | |
1154 | * | |
1155 | * if zfs_znode_alloc() fails it will drop the hold on the | |
1156 | * bonus buffer. | |
34dc7c2f | 1157 | */ |
428870ff BB |
1158 | zp = zfs_znode_alloc(zfsvfs, db, doi.doi_data_block_size, |
1159 | doi.doi_bonus_type, NULL); | |
1160 | if (zp == NULL) { | |
1161 | err = ENOENT; | |
1162 | } else { | |
1163 | *zpp = zp; | |
1164 | } | |
34dc7c2f | 1165 | ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); |
428870ff | 1166 | return (err); |
34dc7c2f BB |
1167 | } |
1168 | ||
1169 | int | |
1170 | zfs_rezget(znode_t *zp) | |
1171 | { | |
1172 | zfsvfs_t *zfsvfs = zp->z_zfsvfs; | |
1173 | dmu_object_info_t doi; | |
1174 | dmu_buf_t *db; | |
1175 | uint64_t obj_num = zp->z_id; | |
428870ff BB |
1176 | uint64_t mode; |
1177 | uint64_t uid, gid; | |
1178 | sa_bulk_attr_t bulk[8]; | |
34dc7c2f | 1179 | int err; |
428870ff BB |
1180 | int count = 0; |
1181 | uint64_t gen; | |
34dc7c2f BB |
1182 | |
1183 | ZFS_OBJ_HOLD_ENTER(zfsvfs, obj_num); | |
1184 | ||
428870ff BB |
1185 | mutex_enter(&zp->z_acl_lock); |
1186 | if (zp->z_acl_cached) { | |
1187 | zfs_acl_free(zp->z_acl_cached); | |
1188 | zp->z_acl_cached = NULL; | |
1189 | } | |
1190 | ||
1191 | mutex_exit(&zp->z_acl_lock); | |
1192 | ASSERT(zp->z_sa_hdl == NULL); | |
1193 | err = sa_buf_hold(zfsvfs->z_os, obj_num, NULL, &db); | |
34dc7c2f BB |
1194 | if (err) { |
1195 | ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); | |
1196 | return (err); | |
1197 | } | |
1198 | ||
1199 | dmu_object_info_from_db(db, &doi); | |
428870ff BB |
1200 | if (doi.doi_bonus_type != DMU_OT_SA && |
1201 | (doi.doi_bonus_type != DMU_OT_ZNODE || | |
1202 | (doi.doi_bonus_type == DMU_OT_ZNODE && | |
1203 | doi.doi_bonus_size < sizeof (znode_phys_t)))) { | |
1204 | sa_buf_rele(db, NULL); | |
34dc7c2f BB |
1205 | ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); |
1206 | return (EINVAL); | |
1207 | } | |
1208 | ||
428870ff BB |
1209 | zfs_znode_sa_init(zfsvfs, zp, db, doi.doi_bonus_type, NULL); |
1210 | ||
1211 | /* reload cached values */ | |
1212 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zfsvfs), NULL, | |
1213 | &gen, sizeof (gen)); | |
1214 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zfsvfs), NULL, | |
1215 | &zp->z_size, sizeof (zp->z_size)); | |
1216 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_LINKS(zfsvfs), NULL, | |
1217 | &zp->z_links, sizeof (zp->z_links)); | |
1218 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), NULL, | |
1219 | &zp->z_pflags, sizeof (zp->z_pflags)); | |
1220 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zfsvfs), NULL, | |
1221 | &zp->z_atime, sizeof (zp->z_atime)); | |
1222 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zfsvfs), NULL, | |
1223 | &uid, sizeof (uid)); | |
1224 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zfsvfs), NULL, | |
1225 | &gid, sizeof (gid)); | |
1226 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zfsvfs), NULL, | |
1227 | &mode, sizeof (mode)); | |
1228 | ||
1229 | zp->z_mode = mode; | |
1230 | ||
1231 | if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count)) { | |
1232 | zfs_znode_dmu_fini(zp); | |
1233 | ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); | |
1234 | return (EIO); | |
1235 | } | |
1236 | ||
1237 | if (gen != zp->z_gen) { | |
1238 | zfs_znode_dmu_fini(zp); | |
34dc7c2f BB |
1239 | ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); |
1240 | return (EIO); | |
1241 | } | |
1242 | ||
428870ff BB |
1243 | zp->z_uid = zfs_fuid_map_id(zfsvfs, uid, CRED(), ZFS_OWNER); |
1244 | zp->z_gid = zfs_fuid_map_id(zfsvfs, gid, CRED(), ZFS_GROUP); | |
1245 | zp->z_unlinked = (zp->z_links == 0); | |
34dc7c2f BB |
1246 | zp->z_blksz = doi.doi_data_block_size; |
1247 | ||
1248 | ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num); | |
1249 | ||
1250 | return (0); | |
1251 | } | |
1252 | ||
1253 | void | |
1254 | zfs_znode_delete(znode_t *zp, dmu_tx_t *tx) | |
1255 | { | |
1256 | zfsvfs_t *zfsvfs = zp->z_zfsvfs; | |
b128c09f | 1257 | objset_t *os = zfsvfs->z_os; |
34dc7c2f | 1258 | uint64_t obj = zp->z_id; |
428870ff | 1259 | uint64_t acl_obj = ZFS_EXTERNAL_ACL(zp); |
34dc7c2f BB |
1260 | |
1261 | ZFS_OBJ_HOLD_ENTER(zfsvfs, obj); | |
b128c09f BB |
1262 | if (acl_obj) |
1263 | VERIFY(0 == dmu_object_free(os, acl_obj, tx)); | |
1264 | VERIFY(0 == dmu_object_free(os, obj, tx)); | |
34dc7c2f BB |
1265 | zfs_znode_dmu_fini(zp); |
1266 | ZFS_OBJ_HOLD_EXIT(zfsvfs, obj); | |
1267 | zfs_znode_free(zp); | |
1268 | } | |
1269 | ||
1270 | void | |
1271 | zfs_zinactive(znode_t *zp) | |
1272 | { | |
1273 | vnode_t *vp = ZTOV(zp); | |
1274 | zfsvfs_t *zfsvfs = zp->z_zfsvfs; | |
1275 | uint64_t z_id = zp->z_id; | |
1276 | ||
428870ff | 1277 | ASSERT(zp->z_sa_hdl); |
34dc7c2f BB |
1278 | |
1279 | /* | |
1280 | * Don't allow a zfs_zget() while were trying to release this znode | |
1281 | */ | |
1282 | ZFS_OBJ_HOLD_ENTER(zfsvfs, z_id); | |
1283 | ||
1284 | mutex_enter(&zp->z_lock); | |
1285 | mutex_enter(&vp->v_lock); | |
1286 | vp->v_count--; | |
1287 | if (vp->v_count > 0 || vn_has_cached_data(vp)) { | |
1288 | /* | |
1289 | * If the hold count is greater than zero, somebody has | |
1290 | * obtained a new reference on this znode while we were | |
1291 | * processing it here, so we are done. If we still have | |
1292 | * mapped pages then we are also done, since we don't | |
1293 | * want to inactivate the znode until the pages get pushed. | |
1294 | * | |
1295 | * XXX - if vn_has_cached_data(vp) is true, but count == 0, | |
1296 | * this seems like it would leave the znode hanging with | |
1297 | * no chance to go inactive... | |
1298 | */ | |
1299 | mutex_exit(&vp->v_lock); | |
1300 | mutex_exit(&zp->z_lock); | |
1301 | ZFS_OBJ_HOLD_EXIT(zfsvfs, z_id); | |
1302 | return; | |
1303 | } | |
1304 | mutex_exit(&vp->v_lock); | |
1305 | ||
1306 | /* | |
1307 | * If this was the last reference to a file with no links, | |
1308 | * remove the file from the file system. | |
1309 | */ | |
1310 | if (zp->z_unlinked) { | |
1311 | mutex_exit(&zp->z_lock); | |
1312 | ZFS_OBJ_HOLD_EXIT(zfsvfs, z_id); | |
1313 | zfs_rmnode(zp); | |
1314 | return; | |
1315 | } | |
428870ff | 1316 | |
34dc7c2f BB |
1317 | mutex_exit(&zp->z_lock); |
1318 | zfs_znode_dmu_fini(zp); | |
1319 | ZFS_OBJ_HOLD_EXIT(zfsvfs, z_id); | |
1320 | zfs_znode_free(zp); | |
1321 | } | |
1322 | ||
1323 | void | |
1324 | zfs_znode_free(znode_t *zp) | |
1325 | { | |
1326 | zfsvfs_t *zfsvfs = zp->z_zfsvfs; | |
1327 | ||
1328 | vn_invalid(ZTOV(zp)); | |
1329 | ||
b128c09f BB |
1330 | ASSERT(ZTOV(zp)->v_count == 0); |
1331 | ||
34dc7c2f | 1332 | mutex_enter(&zfsvfs->z_znodes_lock); |
b128c09f | 1333 | POINTER_INVALIDATE(&zp->z_zfsvfs); |
34dc7c2f BB |
1334 | list_remove(&zfsvfs->z_all_znodes, zp); |
1335 | mutex_exit(&zfsvfs->z_znodes_lock); | |
1336 | ||
45d1cae3 BB |
1337 | if (zp->z_acl_cached) { |
1338 | zfs_acl_free(zp->z_acl_cached); | |
1339 | zp->z_acl_cached = NULL; | |
1340 | } | |
1341 | ||
34dc7c2f BB |
1342 | kmem_cache_free(znode_cache, zp); |
1343 | ||
1344 | VFS_RELE(zfsvfs->z_vfs); | |
1345 | } | |
1346 | ||
1347 | void | |
428870ff BB |
1348 | zfs_tstamp_update_setup(znode_t *zp, uint_t flag, uint64_t mtime[2], |
1349 | uint64_t ctime[2], boolean_t have_tx) | |
34dc7c2f BB |
1350 | { |
1351 | timestruc_t now; | |
1352 | ||
34dc7c2f BB |
1353 | gethrestime(&now); |
1354 | ||
428870ff | 1355 | if (have_tx) { /* will sa_bulk_update happen really soon? */ |
34dc7c2f BB |
1356 | zp->z_atime_dirty = 0; |
1357 | zp->z_seq++; | |
1358 | } else { | |
1359 | zp->z_atime_dirty = 1; | |
1360 | } | |
1361 | ||
428870ff BB |
1362 | if (flag & AT_ATIME) { |
1363 | ZFS_TIME_ENCODE(&now, zp->z_atime); | |
1364 | } | |
34dc7c2f BB |
1365 | |
1366 | if (flag & AT_MTIME) { | |
428870ff BB |
1367 | ZFS_TIME_ENCODE(&now, mtime); |
1368 | if (zp->z_zfsvfs->z_use_fuids) { | |
1369 | zp->z_pflags |= (ZFS_ARCHIVE | | |
1370 | ZFS_AV_MODIFIED); | |
1371 | } | |
34dc7c2f BB |
1372 | } |
1373 | ||
1374 | if (flag & AT_CTIME) { | |
428870ff | 1375 | ZFS_TIME_ENCODE(&now, ctime); |
34dc7c2f | 1376 | if (zp->z_zfsvfs->z_use_fuids) |
428870ff | 1377 | zp->z_pflags |= ZFS_ARCHIVE; |
34dc7c2f BB |
1378 | } |
1379 | } | |
1380 | ||
34dc7c2f BB |
1381 | /* |
1382 | * Grow the block size for a file. | |
1383 | * | |
1384 | * IN: zp - znode of file to free data in. | |
1385 | * size - requested block size | |
1386 | * tx - open transaction. | |
1387 | * | |
1388 | * NOTE: this function assumes that the znode is write locked. | |
1389 | */ | |
1390 | void | |
1391 | zfs_grow_blocksize(znode_t *zp, uint64_t size, dmu_tx_t *tx) | |
1392 | { | |
1393 | int error; | |
1394 | u_longlong_t dummy; | |
1395 | ||
1396 | if (size <= zp->z_blksz) | |
1397 | return; | |
1398 | /* | |
1399 | * If the file size is already greater than the current blocksize, | |
1400 | * we will not grow. If there is more than one block in a file, | |
1401 | * the blocksize cannot change. | |
1402 | */ | |
428870ff | 1403 | if (zp->z_blksz && zp->z_size > zp->z_blksz) |
34dc7c2f BB |
1404 | return; |
1405 | ||
1406 | error = dmu_object_set_blocksize(zp->z_zfsvfs->z_os, zp->z_id, | |
1407 | size, 0, tx); | |
428870ff | 1408 | |
34dc7c2f BB |
1409 | if (error == ENOTSUP) |
1410 | return; | |
1411 | ASSERT3U(error, ==, 0); | |
1412 | ||
1413 | /* What blocksize did we actually get? */ | |
428870ff | 1414 | dmu_object_size_from_db(sa_get_db(zp->z_sa_hdl), &zp->z_blksz, &dummy); |
34dc7c2f BB |
1415 | } |
1416 | ||
1417 | /* | |
1418 | * This is a dummy interface used when pvn_vplist_dirty() should *not* | |
1419 | * be calling back into the fs for a putpage(). E.g.: when truncating | |
1420 | * a file, the pages being "thrown away* don't need to be written out. | |
1421 | */ | |
1422 | /* ARGSUSED */ | |
1423 | static int | |
1424 | zfs_no_putpage(vnode_t *vp, page_t *pp, u_offset_t *offp, size_t *lenp, | |
1425 | int flags, cred_t *cr) | |
1426 | { | |
1427 | ASSERT(0); | |
1428 | return (0); | |
1429 | } | |
1430 | ||
1431 | /* | |
b128c09f | 1432 | * Increase the file length |
34dc7c2f BB |
1433 | * |
1434 | * IN: zp - znode of file to free data in. | |
b128c09f | 1435 | * end - new end-of-file |
34dc7c2f BB |
1436 | * |
1437 | * RETURN: 0 if success | |
1438 | * error code if failure | |
1439 | */ | |
b128c09f BB |
1440 | static int |
1441 | zfs_extend(znode_t *zp, uint64_t end) | |
34dc7c2f | 1442 | { |
34dc7c2f | 1443 | zfsvfs_t *zfsvfs = zp->z_zfsvfs; |
b128c09f | 1444 | dmu_tx_t *tx; |
34dc7c2f | 1445 | rl_t *rl; |
b128c09f | 1446 | uint64_t newblksz; |
34dc7c2f BB |
1447 | int error; |
1448 | ||
34dc7c2f | 1449 | /* |
b128c09f | 1450 | * We will change zp_size, lock the whole file. |
34dc7c2f | 1451 | */ |
b128c09f | 1452 | rl = zfs_range_lock(zp, 0, UINT64_MAX, RL_WRITER); |
34dc7c2f BB |
1453 | |
1454 | /* | |
1455 | * Nothing to do if file already at desired length. | |
1456 | */ | |
428870ff | 1457 | if (end <= zp->z_size) { |
34dc7c2f BB |
1458 | zfs_range_unlock(rl); |
1459 | return (0); | |
1460 | } | |
b128c09f | 1461 | top: |
34dc7c2f | 1462 | tx = dmu_tx_create(zfsvfs->z_os); |
428870ff BB |
1463 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); |
1464 | zfs_sa_upgrade_txholds(tx, zp); | |
b128c09f | 1465 | if (end > zp->z_blksz && |
34dc7c2f BB |
1466 | (!ISP2(zp->z_blksz) || zp->z_blksz < zfsvfs->z_max_blksz)) { |
1467 | /* | |
1468 | * We are growing the file past the current block size. | |
1469 | */ | |
1470 | if (zp->z_blksz > zp->z_zfsvfs->z_max_blksz) { | |
1471 | ASSERT(!ISP2(zp->z_blksz)); | |
b128c09f | 1472 | newblksz = MIN(end, SPA_MAXBLOCKSIZE); |
34dc7c2f | 1473 | } else { |
b128c09f | 1474 | newblksz = MIN(end, zp->z_zfsvfs->z_max_blksz); |
34dc7c2f | 1475 | } |
b128c09f BB |
1476 | dmu_tx_hold_write(tx, zp->z_id, 0, newblksz); |
1477 | } else { | |
1478 | newblksz = 0; | |
34dc7c2f BB |
1479 | } |
1480 | ||
fb5f0bc8 | 1481 | error = dmu_tx_assign(tx, TXG_NOWAIT); |
34dc7c2f | 1482 | if (error) { |
fb5f0bc8 | 1483 | if (error == ERESTART) { |
34dc7c2f | 1484 | dmu_tx_wait(tx); |
b128c09f BB |
1485 | dmu_tx_abort(tx); |
1486 | goto top; | |
1487 | } | |
34dc7c2f BB |
1488 | dmu_tx_abort(tx); |
1489 | zfs_range_unlock(rl); | |
1490 | return (error); | |
1491 | } | |
1492 | ||
b128c09f BB |
1493 | if (newblksz) |
1494 | zfs_grow_blocksize(zp, newblksz, tx); | |
34dc7c2f | 1495 | |
428870ff BB |
1496 | zp->z_size = end; |
1497 | ||
1498 | VERIFY(0 == sa_update(zp->z_sa_hdl, SA_ZPL_SIZE(zp->z_zfsvfs), | |
1499 | &zp->z_size, sizeof (zp->z_size), tx)); | |
34dc7c2f | 1500 | |
b128c09f | 1501 | zfs_range_unlock(rl); |
34dc7c2f | 1502 | |
b128c09f | 1503 | dmu_tx_commit(tx); |
34dc7c2f | 1504 | |
b128c09f BB |
1505 | return (0); |
1506 | } | |
1507 | ||
1508 | /* | |
1509 | * Free space in a file. | |
1510 | * | |
1511 | * IN: zp - znode of file to free data in. | |
1512 | * off - start of section to free. | |
1513 | * len - length of section to free. | |
1514 | * | |
1515 | * RETURN: 0 if success | |
1516 | * error code if failure | |
1517 | */ | |
1518 | static int | |
1519 | zfs_free_range(znode_t *zp, uint64_t off, uint64_t len) | |
1520 | { | |
1521 | zfsvfs_t *zfsvfs = zp->z_zfsvfs; | |
1522 | rl_t *rl; | |
1523 | int error; | |
1524 | ||
1525 | /* | |
1526 | * Lock the range being freed. | |
1527 | */ | |
1528 | rl = zfs_range_lock(zp, off, len, RL_WRITER); | |
1529 | ||
1530 | /* | |
1531 | * Nothing to do if file already at desired length. | |
1532 | */ | |
428870ff | 1533 | if (off >= zp->z_size) { |
b128c09f BB |
1534 | zfs_range_unlock(rl); |
1535 | return (0); | |
34dc7c2f BB |
1536 | } |
1537 | ||
428870ff BB |
1538 | if (off + len > zp->z_size) |
1539 | len = zp->z_size - off; | |
b128c09f BB |
1540 | |
1541 | error = dmu_free_long_range(zfsvfs->z_os, zp->z_id, off, len); | |
1542 | ||
34dc7c2f BB |
1543 | zfs_range_unlock(rl); |
1544 | ||
b128c09f BB |
1545 | return (error); |
1546 | } | |
1547 | ||
1548 | /* | |
1549 | * Truncate a file | |
1550 | * | |
1551 | * IN: zp - znode of file to free data in. | |
1552 | * end - new end-of-file. | |
1553 | * | |
1554 | * RETURN: 0 if success | |
1555 | * error code if failure | |
1556 | */ | |
1557 | static int | |
1558 | zfs_trunc(znode_t *zp, uint64_t end) | |
1559 | { | |
1560 | zfsvfs_t *zfsvfs = zp->z_zfsvfs; | |
1561 | vnode_t *vp = ZTOV(zp); | |
1562 | dmu_tx_t *tx; | |
1563 | rl_t *rl; | |
1564 | int error; | |
1565 | ||
1566 | /* | |
1567 | * We will change zp_size, lock the whole file. | |
1568 | */ | |
1569 | rl = zfs_range_lock(zp, 0, UINT64_MAX, RL_WRITER); | |
1570 | ||
1571 | /* | |
1572 | * Nothing to do if file already at desired length. | |
1573 | */ | |
428870ff | 1574 | if (end >= zp->z_size) { |
b128c09f BB |
1575 | zfs_range_unlock(rl); |
1576 | return (0); | |
1577 | } | |
1578 | ||
1579 | error = dmu_free_long_range(zfsvfs->z_os, zp->z_id, end, -1); | |
1580 | if (error) { | |
1581 | zfs_range_unlock(rl); | |
1582 | return (error); | |
1583 | } | |
1584 | top: | |
1585 | tx = dmu_tx_create(zfsvfs->z_os); | |
428870ff BB |
1586 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); |
1587 | zfs_sa_upgrade_txholds(tx, zp); | |
fb5f0bc8 | 1588 | error = dmu_tx_assign(tx, TXG_NOWAIT); |
b128c09f | 1589 | if (error) { |
fb5f0bc8 | 1590 | if (error == ERESTART) { |
b128c09f BB |
1591 | dmu_tx_wait(tx); |
1592 | dmu_tx_abort(tx); | |
1593 | goto top; | |
1594 | } | |
1595 | dmu_tx_abort(tx); | |
1596 | zfs_range_unlock(rl); | |
1597 | return (error); | |
1598 | } | |
b128c09f | 1599 | |
428870ff BB |
1600 | zp->z_size = end; |
1601 | ||
1602 | VERIFY(0 == sa_update(zp->z_sa_hdl, SA_ZPL_SIZE(zp->z_zfsvfs), | |
1603 | &zp->z_size, sizeof (zp->z_size), tx)); | |
b128c09f | 1604 | |
34dc7c2f BB |
1605 | dmu_tx_commit(tx); |
1606 | ||
1607 | /* | |
1608 | * Clear any mapped pages in the truncated region. This has to | |
1609 | * happen outside of the transaction to avoid the possibility of | |
1610 | * a deadlock with someone trying to push a page that we are | |
1611 | * about to invalidate. | |
1612 | */ | |
b128c09f | 1613 | if (vn_has_cached_data(vp)) { |
34dc7c2f | 1614 | page_t *pp; |
b128c09f BB |
1615 | uint64_t start = end & PAGEMASK; |
1616 | int poff = end & PAGEOFFSET; | |
34dc7c2f BB |
1617 | |
1618 | if (poff != 0 && (pp = page_lookup(vp, start, SE_SHARED))) { | |
1619 | /* | |
1620 | * We need to zero a partial page. | |
1621 | */ | |
1622 | pagezero(pp, poff, PAGESIZE - poff); | |
1623 | start += PAGESIZE; | |
1624 | page_unlock(pp); | |
1625 | } | |
1626 | error = pvn_vplist_dirty(vp, start, zfs_no_putpage, | |
1627 | B_INVAL | B_TRUNC, NULL); | |
1628 | ASSERT(error == 0); | |
1629 | } | |
d164b209 BB |
1630 | |
1631 | zfs_range_unlock(rl); | |
34dc7c2f BB |
1632 | |
1633 | return (0); | |
1634 | } | |
1635 | ||
b128c09f BB |
1636 | /* |
1637 | * Free space in a file | |
1638 | * | |
1639 | * IN: zp - znode of file to free data in. | |
1640 | * off - start of range | |
1641 | * len - end of range (0 => EOF) | |
1642 | * flag - current file open mode flags. | |
1643 | * log - TRUE if this action should be logged | |
1644 | * | |
1645 | * RETURN: 0 if success | |
1646 | * error code if failure | |
1647 | */ | |
1648 | int | |
1649 | zfs_freesp(znode_t *zp, uint64_t off, uint64_t len, int flag, boolean_t log) | |
1650 | { | |
1651 | vnode_t *vp = ZTOV(zp); | |
1652 | dmu_tx_t *tx; | |
1653 | zfsvfs_t *zfsvfs = zp->z_zfsvfs; | |
1654 | zilog_t *zilog = zfsvfs->z_log; | |
428870ff BB |
1655 | uint64_t mode; |
1656 | uint64_t mtime[2], ctime[2]; | |
1657 | sa_bulk_attr_t bulk[3]; | |
1658 | int count = 0; | |
b128c09f BB |
1659 | int error; |
1660 | ||
428870ff BB |
1661 | if ((error = sa_lookup(zp->z_sa_hdl, SA_ZPL_MODE(zfsvfs), &mode, |
1662 | sizeof (mode))) != 0) | |
1663 | return (error); | |
1664 | ||
1665 | if (off > zp->z_size) { | |
b128c09f BB |
1666 | error = zfs_extend(zp, off+len); |
1667 | if (error == 0 && log) | |
1668 | goto log; | |
1669 | else | |
1670 | return (error); | |
1671 | } | |
1672 | ||
1673 | /* | |
1674 | * Check for any locks in the region to be freed. | |
1675 | */ | |
428870ff BB |
1676 | |
1677 | if (MANDLOCK(vp, (mode_t)mode)) { | |
1678 | uint64_t length = (len ? len : zp->z_size - off); | |
b128c09f BB |
1679 | if (error = chklock(vp, FWRITE, off, length, flag, NULL)) |
1680 | return (error); | |
1681 | } | |
1682 | ||
1683 | if (len == 0) { | |
1684 | error = zfs_trunc(zp, off); | |
1685 | } else { | |
1686 | if ((error = zfs_free_range(zp, off, len)) == 0 && | |
428870ff | 1687 | off + len > zp->z_size) |
b128c09f BB |
1688 | error = zfs_extend(zp, off+len); |
1689 | } | |
1690 | if (error || !log) | |
1691 | return (error); | |
1692 | log: | |
1693 | tx = dmu_tx_create(zfsvfs->z_os); | |
428870ff BB |
1694 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); |
1695 | zfs_sa_upgrade_txholds(tx, zp); | |
fb5f0bc8 | 1696 | error = dmu_tx_assign(tx, TXG_NOWAIT); |
b128c09f | 1697 | if (error) { |
fb5f0bc8 | 1698 | if (error == ERESTART) { |
b128c09f BB |
1699 | dmu_tx_wait(tx); |
1700 | dmu_tx_abort(tx); | |
1701 | goto log; | |
1702 | } | |
1703 | dmu_tx_abort(tx); | |
1704 | return (error); | |
1705 | } | |
1706 | ||
428870ff BB |
1707 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zfsvfs), NULL, mtime, 16); |
1708 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zfsvfs), NULL, ctime, 16); | |
1709 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), | |
1710 | NULL, &zp->z_pflags, 8); | |
1711 | zfs_tstamp_update_setup(zp, CONTENT_MODIFIED, mtime, ctime, B_TRUE); | |
1712 | error = sa_bulk_update(zp->z_sa_hdl, bulk, count, tx); | |
1713 | ASSERT(error == 0); | |
1714 | ||
b128c09f BB |
1715 | zfs_log_truncate(zilog, tx, TX_TRUNCATE, zp, off, len); |
1716 | ||
1717 | dmu_tx_commit(tx); | |
1718 | return (0); | |
1719 | } | |
1720 | ||
34dc7c2f BB |
1721 | void |
1722 | zfs_create_fs(objset_t *os, cred_t *cr, nvlist_t *zplprops, dmu_tx_t *tx) | |
1723 | { | |
1724 | zfsvfs_t zfsvfs; | |
428870ff | 1725 | uint64_t moid, obj, sa_obj, version; |
34dc7c2f BB |
1726 | uint64_t sense = ZFS_CASE_SENSITIVE; |
1727 | uint64_t norm = 0; | |
1728 | nvpair_t *elem; | |
1729 | int error; | |
428870ff | 1730 | int i; |
34dc7c2f BB |
1731 | znode_t *rootzp = NULL; |
1732 | vnode_t *vp; | |
1733 | vattr_t vattr; | |
1734 | znode_t *zp; | |
9babb374 | 1735 | zfs_acl_ids_t acl_ids; |
34dc7c2f BB |
1736 | |
1737 | /* | |
1738 | * First attempt to create master node. | |
1739 | */ | |
1740 | /* | |
1741 | * In an empty objset, there are no blocks to read and thus | |
1742 | * there can be no i/o errors (which we assert below). | |
1743 | */ | |
1744 | moid = MASTER_NODE_OBJ; | |
1745 | error = zap_create_claim(os, moid, DMU_OT_MASTER_NODE, | |
1746 | DMU_OT_NONE, 0, tx); | |
1747 | ASSERT(error == 0); | |
1748 | ||
1749 | /* | |
1750 | * Set starting attributes. | |
1751 | */ | |
428870ff | 1752 | version = zfs_zpl_version_map(spa_version(dmu_objset_spa(os))); |
34dc7c2f BB |
1753 | elem = NULL; |
1754 | while ((elem = nvlist_next_nvpair(zplprops, elem)) != NULL) { | |
1755 | /* For the moment we expect all zpl props to be uint64_ts */ | |
1756 | uint64_t val; | |
1757 | char *name; | |
1758 | ||
1759 | ASSERT(nvpair_type(elem) == DATA_TYPE_UINT64); | |
1760 | VERIFY(nvpair_value_uint64(elem, &val) == 0); | |
1761 | name = nvpair_name(elem); | |
1762 | if (strcmp(name, zfs_prop_to_name(ZFS_PROP_VERSION)) == 0) { | |
9babb374 BB |
1763 | if (val < version) |
1764 | version = val; | |
34dc7c2f BB |
1765 | } else { |
1766 | error = zap_update(os, moid, name, 8, 1, &val, tx); | |
1767 | } | |
1768 | ASSERT(error == 0); | |
1769 | if (strcmp(name, zfs_prop_to_name(ZFS_PROP_NORMALIZE)) == 0) | |
1770 | norm = val; | |
1771 | else if (strcmp(name, zfs_prop_to_name(ZFS_PROP_CASE)) == 0) | |
1772 | sense = val; | |
1773 | } | |
1774 | ASSERT(version != 0); | |
9babb374 | 1775 | error = zap_update(os, moid, ZPL_VERSION_STR, 8, 1, &version, tx); |
34dc7c2f | 1776 | |
428870ff BB |
1777 | /* |
1778 | * Create zap object used for SA attribute registration | |
1779 | */ | |
1780 | ||
1781 | if (version >= ZPL_VERSION_SA) { | |
1782 | sa_obj = zap_create(os, DMU_OT_SA_MASTER_NODE, | |
1783 | DMU_OT_NONE, 0, tx); | |
1784 | error = zap_add(os, moid, ZFS_SA_ATTRS, 8, 1, &sa_obj, tx); | |
1785 | ASSERT(error == 0); | |
1786 | } else { | |
1787 | sa_obj = 0; | |
1788 | } | |
34dc7c2f BB |
1789 | /* |
1790 | * Create a delete queue. | |
1791 | */ | |
9babb374 | 1792 | obj = zap_create(os, DMU_OT_UNLINKED_SET, DMU_OT_NONE, 0, tx); |
34dc7c2f | 1793 | |
9babb374 | 1794 | error = zap_add(os, moid, ZFS_UNLINKED_SET, 8, 1, &obj, tx); |
34dc7c2f BB |
1795 | ASSERT(error == 0); |
1796 | ||
1797 | /* | |
1798 | * Create root znode. Create minimal znode/vnode/zfsvfs | |
1799 | * to allow zfs_mknode to work. | |
1800 | */ | |
1801 | vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; | |
1802 | vattr.va_type = VDIR; | |
1803 | vattr.va_mode = S_IFDIR|0755; | |
1804 | vattr.va_uid = crgetuid(cr); | |
1805 | vattr.va_gid = crgetgid(cr); | |
1806 | ||
1807 | rootzp = kmem_cache_alloc(znode_cache, KM_SLEEP); | |
34dc7c2f BB |
1808 | rootzp->z_unlinked = 0; |
1809 | rootzp->z_atime_dirty = 0; | |
428870ff | 1810 | rootzp->z_is_sa = USE_SA(version, os); |
34dc7c2f BB |
1811 | |
1812 | vp = ZTOV(rootzp); | |
1813 | vn_reinit(vp); | |
1814 | vp->v_type = VDIR; | |
1815 | ||
1816 | bzero(&zfsvfs, sizeof (zfsvfs_t)); | |
1817 | ||
1818 | zfsvfs.z_os = os; | |
34dc7c2f BB |
1819 | zfsvfs.z_parent = &zfsvfs; |
1820 | zfsvfs.z_version = version; | |
1821 | zfsvfs.z_use_fuids = USE_FUIDS(version, os); | |
428870ff | 1822 | zfsvfs.z_use_sa = USE_SA(version, os); |
34dc7c2f | 1823 | zfsvfs.z_norm = norm; |
428870ff BB |
1824 | |
1825 | zfsvfs.z_attr_table = sa_setup(os, sa_obj, zfs_attr_table, ZPL_END); | |
1826 | ||
34dc7c2f BB |
1827 | /* |
1828 | * Fold case on file systems that are always or sometimes case | |
1829 | * insensitive. | |
1830 | */ | |
1831 | if (sense == ZFS_CASE_INSENSITIVE || sense == ZFS_CASE_MIXED) | |
1832 | zfsvfs.z_norm |= U8_TEXTPREP_TOUPPER; | |
1833 | ||
1834 | mutex_init(&zfsvfs.z_znodes_lock, NULL, MUTEX_DEFAULT, NULL); | |
1835 | list_create(&zfsvfs.z_all_znodes, sizeof (znode_t), | |
1836 | offsetof(znode_t, z_link_node)); | |
1837 | ||
428870ff BB |
1838 | for (i = 0; i != ZFS_OBJ_MTX_SZ; i++) |
1839 | mutex_init(&zfsvfs.z_hold_mtx[i], NULL, MUTEX_DEFAULT, NULL); | |
1840 | ||
b128c09f BB |
1841 | ASSERT(!POINTER_IS_VALID(rootzp->z_zfsvfs)); |
1842 | rootzp->z_zfsvfs = &zfsvfs; | |
9babb374 BB |
1843 | VERIFY(0 == zfs_acl_ids_create(rootzp, IS_ROOT_NODE, &vattr, |
1844 | cr, NULL, &acl_ids)); | |
428870ff | 1845 | zfs_mknode(rootzp, &vattr, tx, cr, IS_ROOT_NODE, &zp, &acl_ids); |
34dc7c2f | 1846 | ASSERT3P(zp, ==, rootzp); |
b128c09f | 1847 | ASSERT(!vn_in_dnlc(ZTOV(rootzp))); /* not valid to move */ |
34dc7c2f BB |
1848 | error = zap_add(os, moid, ZFS_ROOT_OBJ, 8, 1, &rootzp->z_id, tx); |
1849 | ASSERT(error == 0); | |
9babb374 | 1850 | zfs_acl_ids_free(&acl_ids); |
b128c09f | 1851 | POINTER_INVALIDATE(&rootzp->z_zfsvfs); |
34dc7c2f BB |
1852 | |
1853 | ZTOV(rootzp)->v_count = 0; | |
428870ff | 1854 | sa_handle_destroy(rootzp->z_sa_hdl); |
34dc7c2f | 1855 | kmem_cache_free(znode_cache, rootzp); |
9babb374 BB |
1856 | |
1857 | /* | |
1858 | * Create shares directory | |
1859 | */ | |
1860 | ||
1861 | error = zfs_create_share_dir(&zfsvfs, tx); | |
1862 | ||
1863 | ASSERT(error == 0); | |
428870ff BB |
1864 | |
1865 | for (i = 0; i != ZFS_OBJ_MTX_SZ; i++) | |
1866 | mutex_destroy(&zfsvfs.z_hold_mtx[i]); | |
34dc7c2f BB |
1867 | } |
1868 | ||
1869 | #endif /* _KERNEL */ | |
428870ff | 1870 | |
34dc7c2f BB |
1871 | /* |
1872 | * Given an object number, return its parent object number and whether | |
1873 | * or not the object is an extended attribute directory. | |
1874 | */ | |
1875 | static int | |
428870ff BB |
1876 | zfs_obj_to_pobj(objset_t *osp, uint64_t obj, uint64_t *pobjp, int *is_xattrdir, |
1877 | sa_attr_type_t *sa_table) | |
34dc7c2f BB |
1878 | { |
1879 | dmu_buf_t *db; | |
1880 | dmu_object_info_t doi; | |
34dc7c2f | 1881 | int error; |
428870ff BB |
1882 | uint64_t parent; |
1883 | uint64_t pflags; | |
1884 | uint64_t mode; | |
1885 | sa_bulk_attr_t bulk[3]; | |
1886 | sa_handle_t *hdl; | |
1887 | int count = 0; | |
1888 | ||
1889 | if ((error = sa_buf_hold(osp, obj, FTAG, &db)) != 0) | |
34dc7c2f BB |
1890 | return (error); |
1891 | ||
1892 | dmu_object_info_from_db(db, &doi); | |
428870ff BB |
1893 | if ((doi.doi_bonus_type != DMU_OT_SA && |
1894 | doi.doi_bonus_type != DMU_OT_ZNODE) || | |
1895 | doi.doi_bonus_type == DMU_OT_ZNODE && | |
34dc7c2f | 1896 | doi.doi_bonus_size < sizeof (znode_phys_t)) { |
428870ff | 1897 | sa_buf_rele(db, FTAG); |
34dc7c2f BB |
1898 | return (EINVAL); |
1899 | } | |
1900 | ||
428870ff BB |
1901 | if ((error = sa_handle_get(osp, obj, NULL, SA_HDL_PRIVATE, |
1902 | &hdl)) != 0) { | |
1903 | sa_buf_rele(db, FTAG); | |
1904 | return (error); | |
1905 | } | |
1906 | ||
1907 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_PARENT], | |
1908 | NULL, &parent, 8); | |
1909 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_FLAGS], NULL, | |
1910 | &pflags, 8); | |
1911 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_MODE], NULL, | |
1912 | &mode, 8); | |
1913 | ||
1914 | if ((error = sa_bulk_lookup(hdl, bulk, count)) != 0) { | |
1915 | sa_buf_rele(db, FTAG); | |
1916 | sa_handle_destroy(hdl); | |
1917 | return (error); | |
1918 | } | |
1919 | *pobjp = parent; | |
1920 | *is_xattrdir = ((pflags & ZFS_XATTR) != 0) && S_ISDIR(mode); | |
1921 | sa_handle_destroy(hdl); | |
1922 | sa_buf_rele(db, FTAG); | |
34dc7c2f BB |
1923 | |
1924 | return (0); | |
1925 | } | |
1926 | ||
1927 | int | |
1928 | zfs_obj_to_path(objset_t *osp, uint64_t obj, char *buf, int len) | |
1929 | { | |
1930 | char *path = buf + len - 1; | |
428870ff | 1931 | sa_attr_type_t *sa_table; |
34dc7c2f | 1932 | int error; |
428870ff | 1933 | uint64_t sa_obj = 0; |
34dc7c2f BB |
1934 | |
1935 | *path = '\0'; | |
1936 | ||
428870ff BB |
1937 | error = zap_lookup(osp, MASTER_NODE_OBJ, ZFS_SA_ATTRS, 8, 1, &sa_obj); |
1938 | ||
1939 | if (error != 0 && error != ENOENT) | |
1940 | return (error); | |
1941 | ||
1942 | sa_table = sa_setup(osp, sa_obj, zfs_attr_table, ZPL_END); | |
1943 | ||
34dc7c2f BB |
1944 | for (;;) { |
1945 | uint64_t pobj; | |
1946 | char component[MAXNAMELEN + 2]; | |
1947 | size_t complen; | |
1948 | int is_xattrdir; | |
1949 | ||
1950 | if ((error = zfs_obj_to_pobj(osp, obj, &pobj, | |
428870ff | 1951 | &is_xattrdir, sa_table)) != 0) |
34dc7c2f BB |
1952 | break; |
1953 | ||
1954 | if (pobj == obj) { | |
1955 | if (path[0] != '/') | |
1956 | *--path = '/'; | |
1957 | break; | |
1958 | } | |
1959 | ||
1960 | component[0] = '/'; | |
1961 | if (is_xattrdir) { | |
1962 | (void) sprintf(component + 1, "<xattrdir>"); | |
1963 | } else { | |
1964 | error = zap_value_search(osp, pobj, obj, | |
1965 | ZFS_DIRENT_OBJ(-1ULL), component + 1); | |
1966 | if (error != 0) | |
1967 | break; | |
1968 | } | |
1969 | ||
1970 | complen = strlen(component); | |
1971 | path -= complen; | |
1972 | ASSERT(path >= buf); | |
1973 | bcopy(component, path, complen); | |
1974 | obj = pobj; | |
1975 | } | |
1976 | ||
1977 | if (error == 0) | |
1978 | (void) memmove(buf, path, buf + len - path); | |
428870ff | 1979 | |
34dc7c2f BB |
1980 | return (error); |
1981 | } |