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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. |
5d43cc9a | 23 | * Copyright (c) 2012, 2018 by Delphix. All rights reserved. |
34dc7c2f BB |
24 | */ |
25 | ||
26 | /* Portions Copyright 2007 Jeremy Teo */ | |
27 | ||
34dc7c2f BB |
28 | #ifdef _KERNEL |
29 | #include <sys/types.h> | |
30 | #include <sys/param.h> | |
31 | #include <sys/time.h> | |
34dc7c2f | 32 | #include <sys/sysmacros.h> |
34dc7c2f | 33 | #include <sys/mntent.h> |
34dc7c2f BB |
34 | #include <sys/u8_textprep.h> |
35 | #include <sys/dsl_dataset.h> | |
36 | #include <sys/vfs.h> | |
34dc7c2f BB |
37 | #include <sys/vnode.h> |
38 | #include <sys/file.h> | |
39 | #include <sys/kmem.h> | |
40 | #include <sys/errno.h> | |
34dc7c2f | 41 | #include <sys/atomic.h> |
34dc7c2f BB |
42 | #include <sys/zfs_dir.h> |
43 | #include <sys/zfs_acl.h> | |
44 | #include <sys/zfs_ioctl.h> | |
45 | #include <sys/zfs_rlock.h> | |
46 | #include <sys/zfs_fuid.h> | |
3558fd73 | 47 | #include <sys/zfs_vnops.h> |
ebe7e575 | 48 | #include <sys/zfs_ctldir.h> |
428870ff | 49 | #include <sys/dnode.h> |
34dc7c2f | 50 | #include <sys/fs/zfs.h> |
3558fd73 | 51 | #include <sys/zpl.h> |
34dc7c2f BB |
52 | #endif /* _KERNEL */ |
53 | ||
54 | #include <sys/dmu.h> | |
f1512ee6 | 55 | #include <sys/dmu_objset.h> |
50c957f7 | 56 | #include <sys/dmu_tx.h> |
27d96d22 | 57 | #include <sys/zfs_refcount.h> |
34dc7c2f BB |
58 | #include <sys/stat.h> |
59 | #include <sys/zap.h> | |
60 | #include <sys/zfs_znode.h> | |
428870ff BB |
61 | #include <sys/sa.h> |
62 | #include <sys/zfs_sa.h> | |
572e2857 | 63 | #include <sys/zfs_stat.h> |
34dc7c2f BB |
64 | |
65 | #include "zfs_prop.h" | |
428870ff | 66 | #include "zfs_comutil.h" |
34dc7c2f BB |
67 | |
68 | /* | |
69 | * Functions needed for userland (ie: libzpool) are not put under | |
70 | * #ifdef_KERNEL; the rest of the functions have dependencies | |
71 | * (such as VFS logic) that will not compile easily in userland. | |
72 | */ | |
73 | #ifdef _KERNEL | |
9babb374 | 74 | |
b128c09f | 75 | static kmem_cache_t *znode_cache = NULL; |
c96c36fa | 76 | static kmem_cache_t *znode_hold_cache = NULL; |
0720116d | 77 | unsigned int zfs_object_mutex_size = ZFS_OBJ_MTX_SZ; |
34dc7c2f | 78 | |
dcec0a12 AP |
79 | /* |
80 | * This is used by the test suite so that it can delay znodes from being | |
81 | * freed in order to inspect the unlinked set. | |
82 | */ | |
18168da7 | 83 | static int zfs_unlink_suspend_progress = 0; |
dcec0a12 | 84 | |
5d43cc9a MA |
85 | /* |
86 | * This callback is invoked when acquiring a RL_WRITER or RL_APPEND lock on | |
87 | * z_rangelock. It will modify the offset and length of the lock to reflect | |
88 | * znode-specific information, and convert RL_APPEND to RL_WRITER. This is | |
89 | * called with the rangelock_t's rl_lock held, which avoids races. | |
90 | */ | |
91 | static void | |
bd4dde8e | 92 | zfs_rangelock_cb(zfs_locked_range_t *new, void *arg) |
5d43cc9a MA |
93 | { |
94 | znode_t *zp = arg; | |
95 | ||
96 | /* | |
97 | * If in append mode, convert to writer and lock starting at the | |
98 | * current end of file. | |
99 | */ | |
100 | if (new->lr_type == RL_APPEND) { | |
101 | new->lr_offset = zp->z_size; | |
102 | new->lr_type = RL_WRITER; | |
103 | } | |
104 | ||
105 | /* | |
106 | * If we need to grow the block size then lock the whole file range. | |
107 | */ | |
108 | uint64_t end_size = MAX(zp->z_size, new->lr_offset + new->lr_length); | |
109 | if (end_size > zp->z_blksz && (!ISP2(zp->z_blksz) || | |
110 | zp->z_blksz < ZTOZSB(zp)->z_max_blksz)) { | |
111 | new->lr_offset = 0; | |
112 | new->lr_length = UINT64_MAX; | |
113 | } | |
114 | } | |
115 | ||
34dc7c2f BB |
116 | /*ARGSUSED*/ |
117 | static int | |
b128c09f | 118 | zfs_znode_cache_constructor(void *buf, void *arg, int kmflags) |
34dc7c2f BB |
119 | { |
120 | znode_t *zp = buf; | |
121 | ||
3558fd73 | 122 | inode_init_once(ZTOI(zp)); |
b128c09f BB |
123 | list_link_init(&zp->z_link_node); |
124 | ||
34dc7c2f | 125 | mutex_init(&zp->z_lock, NULL, MUTEX_DEFAULT, NULL); |
34dc7c2f | 126 | rw_init(&zp->z_parent_lock, NULL, RW_DEFAULT, NULL); |
448d7aaa | 127 | rw_init(&zp->z_name_lock, NULL, RW_NOLOCKDEP, NULL); |
34dc7c2f | 128 | mutex_init(&zp->z_acl_lock, NULL, MUTEX_DEFAULT, NULL); |
82a37189 | 129 | rw_init(&zp->z_xattr_lock, NULL, RW_DEFAULT, NULL); |
34dc7c2f | 130 | |
2cc479d0 | 131 | zfs_rangelock_init(&zp->z_rangelock, zfs_rangelock_cb, zp); |
34dc7c2f | 132 | |
b128c09f | 133 | zp->z_dirlocks = NULL; |
45d1cae3 | 134 | zp->z_acl_cached = NULL; |
82a37189 | 135 | zp->z_xattr_cached = NULL; |
98701490 | 136 | zp->z_xattr_parent = 0; |
34dc7c2f BB |
137 | return (0); |
138 | } | |
139 | ||
140 | /*ARGSUSED*/ | |
141 | static void | |
b128c09f | 142 | zfs_znode_cache_destructor(void *buf, void *arg) |
34dc7c2f BB |
143 | { |
144 | znode_t *zp = buf; | |
145 | ||
b128c09f | 146 | ASSERT(!list_link_active(&zp->z_link_node)); |
34dc7c2f | 147 | mutex_destroy(&zp->z_lock); |
34dc7c2f BB |
148 | rw_destroy(&zp->z_parent_lock); |
149 | rw_destroy(&zp->z_name_lock); | |
150 | mutex_destroy(&zp->z_acl_lock); | |
82a37189 | 151 | rw_destroy(&zp->z_xattr_lock); |
2cc479d0 | 152 | zfs_rangelock_fini(&zp->z_rangelock); |
34dc7c2f | 153 | |
c903a756 RM |
154 | ASSERT3P(zp->z_dirlocks, ==, NULL); |
155 | ASSERT3P(zp->z_acl_cached, ==, NULL); | |
156 | ASSERT3P(zp->z_xattr_cached, ==, NULL); | |
b128c09f BB |
157 | } |
158 | ||
c96c36fa BB |
159 | static int |
160 | zfs_znode_hold_cache_constructor(void *buf, void *arg, int kmflags) | |
161 | { | |
162 | znode_hold_t *zh = buf; | |
163 | ||
164 | mutex_init(&zh->zh_lock, NULL, MUTEX_DEFAULT, NULL); | |
424fd7c3 | 165 | zfs_refcount_create(&zh->zh_refcount); |
c96c36fa BB |
166 | zh->zh_obj = ZFS_NO_OBJECT; |
167 | ||
168 | return (0); | |
169 | } | |
170 | ||
171 | static void | |
172 | zfs_znode_hold_cache_destructor(void *buf, void *arg) | |
173 | { | |
174 | znode_hold_t *zh = buf; | |
175 | ||
176 | mutex_destroy(&zh->zh_lock); | |
424fd7c3 | 177 | zfs_refcount_destroy(&zh->zh_refcount); |
c96c36fa BB |
178 | } |
179 | ||
34dc7c2f BB |
180 | void |
181 | zfs_znode_init(void) | |
182 | { | |
183 | /* | |
5074bfe8 TC |
184 | * Initialize zcache. The KMC_SLAB hint is used in order that it be |
185 | * backed by kmalloc() when on the Linux slab in order that any | |
186 | * wait_on_bit() operations on the related inode operate properly. | |
34dc7c2f BB |
187 | */ |
188 | ASSERT(znode_cache == NULL); | |
189 | znode_cache = kmem_cache_create("zfs_znode_cache", | |
190 | sizeof (znode_t), 0, zfs_znode_cache_constructor, | |
5074bfe8 | 191 | zfs_znode_cache_destructor, NULL, NULL, NULL, KMC_SLAB); |
c96c36fa BB |
192 | |
193 | ASSERT(znode_hold_cache == NULL); | |
194 | znode_hold_cache = kmem_cache_create("zfs_znode_hold_cache", | |
195 | sizeof (znode_hold_t), 0, zfs_znode_hold_cache_constructor, | |
196 | zfs_znode_hold_cache_destructor, NULL, NULL, NULL, 0); | |
34dc7c2f BB |
197 | } |
198 | ||
199 | void | |
200 | zfs_znode_fini(void) | |
201 | { | |
34dc7c2f BB |
202 | /* |
203 | * Cleanup zcache | |
204 | */ | |
205 | if (znode_cache) | |
206 | kmem_cache_destroy(znode_cache); | |
207 | znode_cache = NULL; | |
c96c36fa BB |
208 | |
209 | if (znode_hold_cache) | |
210 | kmem_cache_destroy(znode_hold_cache); | |
211 | znode_hold_cache = NULL; | |
212 | } | |
213 | ||
214 | /* | |
215 | * The zfs_znode_hold_enter() / zfs_znode_hold_exit() functions are used to | |
216 | * serialize access to a znode and its SA buffer while the object is being | |
217 | * created or destroyed. This kind of locking would normally reside in the | |
218 | * znode itself but in this case that's impossible because the znode and SA | |
219 | * buffer may not yet exist. Therefore the locking is handled externally | |
bf169e9f | 220 | * with an array of mutexes and AVLs trees which contain per-object locks. |
c96c36fa BB |
221 | * |
222 | * In zfs_znode_hold_enter() a per-object lock is created as needed, inserted | |
223 | * in to the correct AVL tree and finally the per-object lock is held. In | |
224 | * zfs_znode_hold_exit() the process is reversed. The per-object lock is | |
225 | * released, removed from the AVL tree and destroyed if there are no waiters. | |
226 | * | |
227 | * This scheme has two important properties: | |
228 | * | |
229 | * 1) No memory allocations are performed while holding one of the z_hold_locks. | |
230 | * This ensures evict(), which can be called from direct memory reclaim, will | |
231 | * never block waiting on a z_hold_locks which just happens to have hashed | |
232 | * to the same index. | |
233 | * | |
234 | * 2) All locks used to serialize access to an object are per-object and never | |
235 | * shared. This minimizes lock contention without creating a large number | |
236 | * of dedicated locks. | |
237 | * | |
238 | * On the downside it does require znode_lock_t structures to be frequently | |
239 | * allocated and freed. However, because these are backed by a kmem cache | |
240 | * and very short lived this cost is minimal. | |
241 | */ | |
242 | int | |
243 | zfs_znode_hold_compare(const void *a, const void *b) | |
244 | { | |
ee36c709 GN |
245 | const znode_hold_t *zh_a = (const znode_hold_t *)a; |
246 | const znode_hold_t *zh_b = (const znode_hold_t *)b; | |
247 | ||
ca577779 | 248 | return (TREE_CMP(zh_a->zh_obj, zh_b->zh_obj)); |
c96c36fa BB |
249 | } |
250 | ||
65c7cc49 | 251 | static boolean_t __maybe_unused |
0037b49e | 252 | zfs_znode_held(zfsvfs_t *zfsvfs, uint64_t obj) |
c96c36fa BB |
253 | { |
254 | znode_hold_t *zh, search; | |
0037b49e | 255 | int i = ZFS_OBJ_HASH(zfsvfs, obj); |
37c56346 | 256 | boolean_t held; |
c96c36fa BB |
257 | |
258 | search.zh_obj = obj; | |
259 | ||
0037b49e BB |
260 | mutex_enter(&zfsvfs->z_hold_locks[i]); |
261 | zh = avl_find(&zfsvfs->z_hold_trees[i], &search, NULL); | |
37c56346 | 262 | held = (zh && MUTEX_HELD(&zh->zh_lock)) ? B_TRUE : B_FALSE; |
0037b49e | 263 | mutex_exit(&zfsvfs->z_hold_locks[i]); |
c96c36fa | 264 | |
37c56346 | 265 | return (held); |
c96c36fa BB |
266 | } |
267 | ||
268 | static znode_hold_t * | |
0037b49e | 269 | zfs_znode_hold_enter(zfsvfs_t *zfsvfs, uint64_t obj) |
c96c36fa BB |
270 | { |
271 | znode_hold_t *zh, *zh_new, search; | |
0037b49e | 272 | int i = ZFS_OBJ_HASH(zfsvfs, obj); |
c96c36fa BB |
273 | boolean_t found = B_FALSE; |
274 | ||
275 | zh_new = kmem_cache_alloc(znode_hold_cache, KM_SLEEP); | |
276 | zh_new->zh_obj = obj; | |
277 | search.zh_obj = obj; | |
278 | ||
0037b49e BB |
279 | mutex_enter(&zfsvfs->z_hold_locks[i]); |
280 | zh = avl_find(&zfsvfs->z_hold_trees[i], &search, NULL); | |
c96c36fa BB |
281 | if (likely(zh == NULL)) { |
282 | zh = zh_new; | |
0037b49e | 283 | avl_add(&zfsvfs->z_hold_trees[i], zh); |
c96c36fa BB |
284 | } else { |
285 | ASSERT3U(zh->zh_obj, ==, obj); | |
286 | found = B_TRUE; | |
287 | } | |
c13060e4 | 288 | zfs_refcount_add(&zh->zh_refcount, NULL); |
0037b49e | 289 | mutex_exit(&zfsvfs->z_hold_locks[i]); |
c96c36fa BB |
290 | |
291 | if (found == B_TRUE) | |
292 | kmem_cache_free(znode_hold_cache, zh_new); | |
293 | ||
294 | ASSERT(MUTEX_NOT_HELD(&zh->zh_lock)); | |
424fd7c3 | 295 | ASSERT3S(zfs_refcount_count(&zh->zh_refcount), >, 0); |
c96c36fa BB |
296 | mutex_enter(&zh->zh_lock); |
297 | ||
298 | return (zh); | |
299 | } | |
300 | ||
301 | static void | |
0037b49e | 302 | zfs_znode_hold_exit(zfsvfs_t *zfsvfs, znode_hold_t *zh) |
c96c36fa | 303 | { |
0037b49e | 304 | int i = ZFS_OBJ_HASH(zfsvfs, zh->zh_obj); |
c96c36fa BB |
305 | boolean_t remove = B_FALSE; |
306 | ||
0037b49e | 307 | ASSERT(zfs_znode_held(zfsvfs, zh->zh_obj)); |
424fd7c3 | 308 | ASSERT3S(zfs_refcount_count(&zh->zh_refcount), >, 0); |
c96c36fa BB |
309 | mutex_exit(&zh->zh_lock); |
310 | ||
0037b49e | 311 | mutex_enter(&zfsvfs->z_hold_locks[i]); |
424fd7c3 | 312 | if (zfs_refcount_remove(&zh->zh_refcount, NULL) == 0) { |
0037b49e | 313 | avl_remove(&zfsvfs->z_hold_trees[i], zh); |
c96c36fa BB |
314 | remove = B_TRUE; |
315 | } | |
0037b49e | 316 | mutex_exit(&zfsvfs->z_hold_locks[i]); |
c96c36fa BB |
317 | |
318 | if (remove == B_TRUE) | |
319 | kmem_cache_free(znode_hold_cache, zh); | |
34dc7c2f BB |
320 | } |
321 | ||
13a9a6f5 MM |
322 | dev_t |
323 | zfs_cmpldev(uint64_t dev) | |
324 | { | |
325 | return (dev); | |
326 | } | |
327 | ||
34dc7c2f | 328 | static void |
0037b49e | 329 | zfs_znode_sa_init(zfsvfs_t *zfsvfs, znode_t *zp, |
428870ff | 330 | dmu_buf_t *db, dmu_object_type_t obj_type, sa_handle_t *sa_hdl) |
34dc7c2f | 331 | { |
0037b49e | 332 | ASSERT(zfs_znode_held(zfsvfs, zp->z_id)); |
34dc7c2f BB |
333 | |
334 | mutex_enter(&zp->z_lock); | |
335 | ||
428870ff BB |
336 | ASSERT(zp->z_sa_hdl == NULL); |
337 | ASSERT(zp->z_acl_cached == NULL); | |
338 | if (sa_hdl == NULL) { | |
0037b49e | 339 | VERIFY(0 == sa_handle_get_from_db(zfsvfs->z_os, db, zp, |
428870ff BB |
340 | SA_HDL_SHARED, &zp->z_sa_hdl)); |
341 | } else { | |
342 | zp->z_sa_hdl = sa_hdl; | |
343 | sa_set_userp(sa_hdl, zp); | |
344 | } | |
34dc7c2f | 345 | |
428870ff | 346 | zp->z_is_sa = (obj_type == DMU_OT_SA) ? B_TRUE : B_FALSE; |
34dc7c2f | 347 | |
34dc7c2f | 348 | mutex_exit(&zp->z_lock); |
34dc7c2f BB |
349 | } |
350 | ||
351 | void | |
352 | zfs_znode_dmu_fini(znode_t *zp) | |
353 | { | |
c96c36fa | 354 | ASSERT(zfs_znode_held(ZTOZSB(zp), zp->z_id) || zp->z_unlinked || |
3558fd73 | 355 | RW_WRITE_HELD(&ZTOZSB(zp)->z_teardown_inactive_lock)); |
428870ff BB |
356 | |
357 | sa_handle_destroy(zp->z_sa_hdl); | |
358 | zp->z_sa_hdl = NULL; | |
34dc7c2f BB |
359 | } |
360 | ||
361 | /* | |
3558fd73 BB |
362 | * Called by new_inode() to allocate a new inode. |
363 | */ | |
364 | int | |
365 | zfs_inode_alloc(struct super_block *sb, struct inode **ip) | |
366 | { | |
367 | znode_t *zp; | |
368 | ||
79c76d5b | 369 | zp = kmem_cache_alloc(znode_cache, KM_SLEEP); |
3558fd73 BB |
370 | *ip = ZTOI(zp); |
371 | ||
372 | return (0); | |
373 | } | |
374 | ||
375 | /* | |
376 | * Called in multiple places when an inode should be destroyed. | |
377 | */ | |
378 | void | |
379 | zfs_inode_destroy(struct inode *ip) | |
380 | { | |
381 | znode_t *zp = ITOZ(ip); | |
0037b49e | 382 | zfsvfs_t *zfsvfs = ZTOZSB(zp); |
3558fd73 | 383 | |
0037b49e | 384 | mutex_enter(&zfsvfs->z_znodes_lock); |
7b3e34ba | 385 | if (list_link_active(&zp->z_link_node)) { |
0037b49e BB |
386 | list_remove(&zfsvfs->z_all_znodes, zp); |
387 | zfsvfs->z_nr_znodes--; | |
7b3e34ba | 388 | } |
0037b49e | 389 | mutex_exit(&zfsvfs->z_znodes_lock); |
3558fd73 BB |
390 | |
391 | if (zp->z_acl_cached) { | |
392 | zfs_acl_free(zp->z_acl_cached); | |
393 | zp->z_acl_cached = NULL; | |
394 | } | |
395 | ||
82a37189 BB |
396 | if (zp->z_xattr_cached) { |
397 | nvlist_free(zp->z_xattr_cached); | |
398 | zp->z_xattr_cached = NULL; | |
399 | } | |
400 | ||
3558fd73 BB |
401 | kmem_cache_free(znode_cache, zp); |
402 | } | |
403 | ||
404 | static void | |
0037b49e | 405 | zfs_inode_set_ops(zfsvfs_t *zfsvfs, struct inode *ip) |
3558fd73 | 406 | { |
aa6d8c10 | 407 | uint64_t rdev = 0; |
3558fd73 BB |
408 | |
409 | switch (ip->i_mode & S_IFMT) { | |
410 | case S_IFREG: | |
411 | ip->i_op = &zpl_inode_operations; | |
412 | ip->i_fop = &zpl_file_operations; | |
413 | ip->i_mapping->a_ops = &zpl_address_space_operations; | |
414 | break; | |
415 | ||
416 | case S_IFDIR: | |
417 | ip->i_op = &zpl_dir_inode_operations; | |
418 | ip->i_fop = &zpl_dir_file_operations; | |
419 | ITOZ(ip)->z_zn_prefetch = B_TRUE; | |
420 | break; | |
421 | ||
422 | case S_IFLNK: | |
423 | ip->i_op = &zpl_symlink_inode_operations; | |
424 | break; | |
425 | ||
aa6d8c10 NB |
426 | /* |
427 | * rdev is only stored in a SA only for device files. | |
428 | */ | |
3558fd73 BB |
429 | case S_IFCHR: |
430 | case S_IFBLK: | |
0037b49e | 431 | (void) sa_lookup(ITOZ(ip)->z_sa_hdl, SA_ZPL_RDEV(zfsvfs), &rdev, |
53b1d979 | 432 | sizeof (rdev)); |
6954c22f | 433 | fallthrough; |
aa6d8c10 NB |
434 | case S_IFIFO: |
435 | case S_IFSOCK: | |
3558fd73 BB |
436 | init_special_inode(ip, ip->i_mode, rdev); |
437 | ip->i_op = &zpl_special_inode_operations; | |
438 | break; | |
439 | ||
440 | default: | |
53b1d979 BB |
441 | zfs_panic_recover("inode %llu has invalid mode: 0x%x\n", |
442 | (u_longlong_t)ip->i_ino, ip->i_mode); | |
443 | ||
444 | /* Assume the inode is a file and attempt to continue */ | |
445 | ip->i_mode = S_IFREG | 0644; | |
446 | ip->i_op = &zpl_inode_operations; | |
447 | ip->i_fop = &zpl_file_operations; | |
448 | ip->i_mapping->a_ops = &zpl_address_space_operations; | |
449 | break; | |
3558fd73 BB |
450 | } |
451 | } | |
452 | ||
65c7cc49 | 453 | static void |
7bb1325f CC |
454 | zfs_set_inode_flags(znode_t *zp, struct inode *ip) |
455 | { | |
456 | /* | |
457 | * Linux and Solaris have different sets of file attributes, so we | |
458 | * restrict this conversion to the intersection of the two. | |
459 | */ | |
a5248129 CC |
460 | #ifdef HAVE_INODE_SET_FLAGS |
461 | unsigned int flags = 0; | |
462 | if (zp->z_pflags & ZFS_IMMUTABLE) | |
463 | flags |= S_IMMUTABLE; | |
464 | if (zp->z_pflags & ZFS_APPENDONLY) | |
465 | flags |= S_APPEND; | |
7bb1325f | 466 | |
a5248129 CC |
467 | inode_set_flags(ip, flags, S_IMMUTABLE|S_APPEND); |
468 | #else | |
7bb1325f CC |
469 | if (zp->z_pflags & ZFS_IMMUTABLE) |
470 | ip->i_flags |= S_IMMUTABLE; | |
471 | else | |
472 | ip->i_flags &= ~S_IMMUTABLE; | |
473 | ||
474 | if (zp->z_pflags & ZFS_APPENDONLY) | |
475 | ip->i_flags |= S_APPEND; | |
476 | else | |
477 | ip->i_flags &= ~S_APPEND; | |
a5248129 | 478 | #endif |
7bb1325f CC |
479 | } |
480 | ||
704cd075 | 481 | /* |
fc273894 | 482 | * Update the embedded inode given the znode. |
704cd075 | 483 | */ |
9f5f0019 | 484 | void |
fc273894 | 485 | zfs_znode_update_vfs(znode_t *zp) |
704cd075 | 486 | { |
0037b49e | 487 | zfsvfs_t *zfsvfs; |
704cd075 CC |
488 | struct inode *ip; |
489 | uint32_t blksize; | |
490 | u_longlong_t i_blocks; | |
704cd075 CC |
491 | |
492 | ASSERT(zp != NULL); | |
0037b49e | 493 | zfsvfs = ZTOZSB(zp); |
704cd075 CC |
494 | ip = ZTOI(zp); |
495 | ||
496 | /* Skip .zfs control nodes which do not exist on disk. */ | |
497 | if (zfsctl_is_node(ip)) | |
498 | return; | |
499 | ||
704cd075 CC |
500 | dmu_object_size_from_db(sa_get_db(zp->z_sa_hdl), &blksize, &i_blocks); |
501 | ||
502 | spin_lock(&ip->i_lock); | |
e53d678d | 503 | ip->i_mode = zp->z_mode; |
704cd075 | 504 | ip->i_blocks = i_blocks; |
704cd075 CC |
505 | i_size_write(ip, zp->z_size); |
506 | spin_unlock(&ip->i_lock); | |
507 | } | |
508 | ||
704cd075 | 509 | |
3558fd73 BB |
510 | /* |
511 | * Construct a znode+inode and initialize. | |
34dc7c2f BB |
512 | * |
513 | * This does not do a call to dmu_set_user() that is | |
514 | * up to the caller to do, in case you don't want to | |
515 | * return the znode | |
516 | */ | |
517 | static znode_t * | |
0037b49e | 518 | zfs_znode_alloc(zfsvfs_t *zfsvfs, dmu_buf_t *db, int blksz, |
1a688994 | 519 | dmu_object_type_t obj_type, sa_handle_t *hdl) |
34dc7c2f BB |
520 | { |
521 | znode_t *zp; | |
3558fd73 | 522 | struct inode *ip; |
7f89ae6b | 523 | uint64_t mode; |
428870ff | 524 | uint64_t parent; |
278f2236 | 525 | uint64_t tmp_gen; |
dfbc8630 | 526 | uint64_t links; |
2c6abf15 | 527 | uint64_t z_uid, z_gid; |
abbf0bd4 | 528 | uint64_t atime[2], mtime[2], ctime[2], btime[2]; |
9c5167d1 | 529 | uint64_t projid = ZFS_DEFAULT_PROJID; |
abbf0bd4 | 530 | sa_bulk_attr_t bulk[12]; |
428870ff | 531 | int count = 0; |
34dc7c2f | 532 | |
0037b49e | 533 | ASSERT(zfsvfs != NULL); |
34dc7c2f | 534 | |
0037b49e | 535 | ip = new_inode(zfsvfs->z_sb); |
3558fd73 BB |
536 | if (ip == NULL) |
537 | return (NULL); | |
7304b6e5 | 538 | |
3558fd73 | 539 | zp = ITOZ(ip); |
34dc7c2f | 540 | ASSERT(zp->z_dirlocks == NULL); |
ebe7e575 BB |
541 | ASSERT3P(zp->z_acl_cached, ==, NULL); |
542 | ASSERT3P(zp->z_xattr_cached, ==, NULL); | |
a43570c5 TK |
543 | zp->z_unlinked = B_FALSE; |
544 | zp->z_atime_dirty = B_FALSE; | |
a43570c5 TK |
545 | zp->z_is_mapped = B_FALSE; |
546 | zp->z_is_ctldir = B_FALSE; | |
547 | zp->z_is_stale = B_FALSE; | |
e7a2fa70 | 548 | zp->z_suspended = B_FALSE; |
428870ff | 549 | zp->z_sa_hdl = NULL; |
34dc7c2f | 550 | zp->z_mapcnt = 0; |
34dc7c2f BB |
551 | zp->z_id = db->db_object; |
552 | zp->z_blksz = blksz; | |
553 | zp->z_seq = 0x7A4653; | |
554 | zp->z_sync_cnt = 0; | |
555 | ||
0037b49e | 556 | zfs_znode_sa_init(zfsvfs, zp, db, obj_type, hdl); |
3558fd73 | 557 | |
0037b49e BB |
558 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zfsvfs), NULL, &mode, 8); |
559 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zfsvfs), NULL, &tmp_gen, 8); | |
560 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zfsvfs), NULL, | |
561 | &zp->z_size, 8); | |
562 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_LINKS(zfsvfs), NULL, &links, 8); | |
563 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), NULL, | |
428870ff | 564 | &zp->z_pflags, 8); |
0037b49e | 565 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_PARENT(zfsvfs), NULL, |
7304b6e5 | 566 | &parent, 8); |
0037b49e BB |
567 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zfsvfs), NULL, &z_uid, 8); |
568 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zfsvfs), NULL, &z_gid, 8); | |
569 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zfsvfs), NULL, &atime, 16); | |
570 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zfsvfs), NULL, &mtime, 16); | |
571 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zfsvfs), NULL, &ctime, 16); | |
abbf0bd4 | 572 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CRTIME(zfsvfs), NULL, &btime, 16); |
428870ff | 573 | |
9c5167d1 NF |
574 | if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count) != 0 || tmp_gen == 0 || |
575 | (dmu_objset_projectquota_enabled(zfsvfs->z_os) && | |
576 | (zp->z_pflags & ZFS_PROJID) && | |
577 | sa_lookup(zp->z_sa_hdl, SA_ZPL_PROJID(zfsvfs), &projid, 8) != 0)) { | |
428870ff BB |
578 | if (hdl == NULL) |
579 | sa_handle_destroy(zp->z_sa_hdl); | |
07d63f0c | 580 | zp->z_sa_hdl = NULL; |
3558fd73 | 581 | goto error; |
34dc7c2f | 582 | } |
7304b6e5 | 583 | |
9c5167d1 | 584 | zp->z_projid = projid; |
12fa7f34 | 585 | zp->z_mode = ip->i_mode = mode; |
278f2236 | 586 | ip->i_generation = (uint32_t)tmp_gen; |
ba2fe6af | 587 | ip->i_blkbits = SPA_MINBLOCKSHIFT; |
dfbc8630 | 588 | set_nlink(ip, (uint32_t)links); |
2c6abf15 NB |
589 | zfs_uid_write(ip, z_uid); |
590 | zfs_gid_write(ip, z_gid); | |
7bb1325f | 591 | zfs_set_inode_flags(zp, ip); |
7f89ae6b | 592 | |
98701490 CC |
593 | /* Cache the xattr parent id */ |
594 | if (zp->z_pflags & ZFS_XATTR) | |
595 | zp->z_xattr_parent = parent; | |
596 | ||
9f5f0019 NB |
597 | ZFS_TIME_DECODE(&ip->i_atime, atime); |
598 | ZFS_TIME_DECODE(&ip->i_mtime, mtime); | |
599 | ZFS_TIME_DECODE(&ip->i_ctime, ctime); | |
abbf0bd4 | 600 | ZFS_TIME_DECODE(&zp->z_btime, btime); |
9f5f0019 | 601 | |
1a688994 | 602 | ip->i_ino = zp->z_id; |
fc273894 | 603 | zfs_znode_update_vfs(zp); |
0037b49e | 604 | zfs_inode_set_ops(zfsvfs, ip); |
3558fd73 | 605 | |
7b3e34ba BB |
606 | /* |
607 | * The only way insert_inode_locked() can fail is if the ip->i_ino | |
608 | * number is already hashed for this super block. This can never | |
609 | * happen because the inode numbers map 1:1 with the object numbers. | |
610 | * | |
afa7b348 PZ |
611 | * Exceptions include rolling back a mounted file system, either |
612 | * from the zfs rollback or zfs recv command. | |
613 | * | |
614 | * Active inodes are unhashed during the rollback, but since zrele | |
615 | * can happen asynchronously, we can't guarantee they've been | |
616 | * unhashed. This can cause hash collisions in unlinked drain | |
617 | * processing so do not hash unlinked znodes. | |
7b3e34ba | 618 | */ |
afa7b348 PZ |
619 | if (links > 0) |
620 | VERIFY3S(insert_inode_locked(ip), ==, 0); | |
c85b224f | 621 | |
0037b49e BB |
622 | mutex_enter(&zfsvfs->z_znodes_lock); |
623 | list_insert_tail(&zfsvfs->z_all_znodes, zp); | |
624 | zfsvfs->z_nr_znodes++; | |
0037b49e | 625 | mutex_exit(&zfsvfs->z_znodes_lock); |
b128c09f | 626 | |
afa7b348 PZ |
627 | if (links > 0) |
628 | unlock_new_inode(ip); | |
34dc7c2f | 629 | return (zp); |
3558fd73 BB |
630 | |
631 | error: | |
3558fd73 | 632 | iput(ip); |
d1d7e268 | 633 | return (NULL); |
34dc7c2f BB |
634 | } |
635 | ||
1e8db771 BB |
636 | /* |
637 | * Safely mark an inode dirty. Inodes which are part of a read-only | |
638 | * file system or snapshot may not be dirtied. | |
639 | */ | |
640 | void | |
641 | zfs_mark_inode_dirty(struct inode *ip) | |
642 | { | |
0037b49e | 643 | zfsvfs_t *zfsvfs = ITOZSB(ip); |
1e8db771 | 644 | |
0037b49e | 645 | if (zfs_is_readonly(zfsvfs) || dmu_objset_is_snapshot(zfsvfs->z_os)) |
1e8db771 BB |
646 | return; |
647 | ||
648 | mark_inode_dirty(ip); | |
649 | } | |
650 | ||
428870ff BB |
651 | static uint64_t empty_xattr; |
652 | static uint64_t pad[4]; | |
653 | static zfs_acl_phys_t acl_phys; | |
34dc7c2f BB |
654 | /* |
655 | * Create a new DMU object to hold a zfs znode. | |
656 | * | |
657 | * IN: dzp - parent directory for new znode | |
658 | * vap - file attributes for new znode | |
659 | * tx - dmu transaction id for zap operations | |
660 | * cr - credentials of caller | |
661 | * flag - flags: | |
662 | * IS_ROOT_NODE - new object will be root | |
841a7a98 | 663 | * IS_TMPFILE - new object is of O_TMPFILE |
34dc7c2f | 664 | * IS_XATTR - new object is an attribute |
841a7a98 | 665 | * acl_ids - ACL related attributes |
34dc7c2f | 666 | * |
841a7a98 | 667 | * OUT: zpp - allocated znode (set to dzp if IS_ROOT_NODE) |
34dc7c2f BB |
668 | * |
669 | */ | |
670 | void | |
671 | zfs_mknode(znode_t *dzp, vattr_t *vap, dmu_tx_t *tx, cred_t *cr, | |
428870ff | 672 | uint_t flag, znode_t **zpp, zfs_acl_ids_t *acl_ids) |
34dc7c2f | 673 | { |
428870ff BB |
674 | uint64_t crtime[2], atime[2], mtime[2], ctime[2]; |
675 | uint64_t mode, size, links, parent, pflags; | |
9c5167d1 | 676 | uint64_t projid = ZFS_DEFAULT_PROJID; |
428870ff | 677 | uint64_t rdev = 0; |
0037b49e | 678 | zfsvfs_t *zfsvfs = ZTOZSB(dzp); |
428870ff | 679 | dmu_buf_t *db; |
6413c95f | 680 | inode_timespec_t now; |
34dc7c2f | 681 | uint64_t gen, obj; |
428870ff | 682 | int bonuslen; |
50c957f7 | 683 | int dnodesize; |
428870ff BB |
684 | sa_handle_t *sa_hdl; |
685 | dmu_object_type_t obj_type; | |
f30484af | 686 | sa_bulk_attr_t *sa_attrs; |
428870ff BB |
687 | int cnt = 0; |
688 | zfs_acl_locator_cb_t locate = { 0 }; | |
c96c36fa | 689 | znode_hold_t *zh; |
34dc7c2f | 690 | |
0037b49e | 691 | if (zfsvfs->z_replay) { |
34dc7c2f | 692 | obj = vap->va_nodeid; |
34dc7c2f BB |
693 | now = vap->va_ctime; /* see zfs_replay_create() */ |
694 | gen = vap->va_nblocks; /* ditto */ | |
50c957f7 | 695 | dnodesize = vap->va_fsid; /* ditto */ |
34dc7c2f BB |
696 | } else { |
697 | obj = 0; | |
698 | gethrestime(&now); | |
699 | gen = dmu_tx_get_txg(tx); | |
0037b49e | 700 | dnodesize = dmu_objset_dnodesize(zfsvfs->z_os); |
34dc7c2f BB |
701 | } |
702 | ||
50c957f7 NB |
703 | if (dnodesize == 0) |
704 | dnodesize = DNODE_MIN_SIZE; | |
705 | ||
0037b49e | 706 | obj_type = zfsvfs->z_use_sa ? DMU_OT_SA : DMU_OT_ZNODE; |
50c957f7 | 707 | |
428870ff | 708 | bonuslen = (obj_type == DMU_OT_SA) ? |
50c957f7 | 709 | DN_BONUS_SIZE(dnodesize) : ZFS_OLD_ZNODE_PHYS_SIZE; |
428870ff | 710 | |
34dc7c2f BB |
711 | /* |
712 | * Create a new DMU object. | |
713 | */ | |
714 | /* | |
715 | * There's currently no mechanism for pre-reading the blocks that will | |
572e2857 | 716 | * be needed to allocate a new object, so we accept the small chance |
34dc7c2f BB |
717 | * that there will be an i/o error and we will fail one of the |
718 | * assertions below. | |
719 | */ | |
3558fd73 | 720 | if (S_ISDIR(vap->va_mode)) { |
0037b49e BB |
721 | if (zfsvfs->z_replay) { |
722 | VERIFY0(zap_create_claim_norm_dnsize(zfsvfs->z_os, obj, | |
723 | zfsvfs->z_norm, DMU_OT_DIRECTORY_CONTENTS, | |
50c957f7 | 724 | obj_type, bonuslen, dnodesize, tx)); |
34dc7c2f | 725 | } else { |
0037b49e BB |
726 | obj = zap_create_norm_dnsize(zfsvfs->z_os, |
727 | zfsvfs->z_norm, DMU_OT_DIRECTORY_CONTENTS, | |
50c957f7 | 728 | obj_type, bonuslen, dnodesize, tx); |
34dc7c2f BB |
729 | } |
730 | } else { | |
0037b49e BB |
731 | if (zfsvfs->z_replay) { |
732 | VERIFY0(dmu_object_claim_dnsize(zfsvfs->z_os, obj, | |
34dc7c2f | 733 | DMU_OT_PLAIN_FILE_CONTENTS, 0, |
50c957f7 | 734 | obj_type, bonuslen, dnodesize, tx)); |
34dc7c2f | 735 | } else { |
0037b49e | 736 | obj = dmu_object_alloc_dnsize(zfsvfs->z_os, |
34dc7c2f | 737 | DMU_OT_PLAIN_FILE_CONTENTS, 0, |
50c957f7 | 738 | obj_type, bonuslen, dnodesize, tx); |
34dc7c2f BB |
739 | } |
740 | } | |
34dc7c2f | 741 | |
0037b49e | 742 | zh = zfs_znode_hold_enter(zfsvfs, obj); |
9631681b | 743 | VERIFY0(sa_buf_hold(zfsvfs->z_os, obj, NULL, &db)); |
34dc7c2f BB |
744 | |
745 | /* | |
746 | * If this is the root, fix up the half-initialized parent pointer | |
747 | * to reference the just-allocated physical data area. | |
748 | */ | |
749 | if (flag & IS_ROOT_NODE) { | |
34dc7c2f BB |
750 | dzp->z_id = obj; |
751 | } | |
752 | ||
753 | /* | |
754 | * If parent is an xattr, so am I. | |
755 | */ | |
9c5167d1 | 756 | if (dzp->z_pflags & ZFS_XATTR) { |
34dc7c2f | 757 | flag |= IS_XATTR; |
34dc7c2f BB |
758 | } |
759 | ||
0037b49e | 760 | if (zfsvfs->z_use_fuids) |
428870ff BB |
761 | pflags = ZFS_ARCHIVE | ZFS_AV_MODIFIED; |
762 | else | |
763 | pflags = 0; | |
34dc7c2f | 764 | |
3558fd73 | 765 | if (S_ISDIR(vap->va_mode)) { |
428870ff | 766 | size = 2; /* contents ("." and "..") */ |
dfbc8630 | 767 | links = 2; |
428870ff | 768 | } else { |
dfbc8630 | 769 | size = 0; |
ace1eae8 | 770 | links = (flag & IS_TMPFILE) ? 0 : 1; |
34dc7c2f BB |
771 | } |
772 | ||
aa6d8c10 | 773 | if (S_ISBLK(vap->va_mode) || S_ISCHR(vap->va_mode)) |
dc1d7665 | 774 | rdev = vap->va_rdev; |
428870ff BB |
775 | |
776 | parent = dzp->z_id; | |
777 | mode = acl_ids->z_mode; | |
34dc7c2f | 778 | if (flag & IS_XATTR) |
428870ff | 779 | pflags |= ZFS_XATTR; |
34dc7c2f | 780 | |
9c5167d1 NF |
781 | if (S_ISREG(vap->va_mode) || S_ISDIR(vap->va_mode)) { |
782 | /* | |
783 | * With ZFS_PROJID flag, we can easily know whether there is | |
784 | * project ID stored on disk or not. See zfs_space_delta_cb(). | |
785 | */ | |
786 | if (obj_type != DMU_OT_ZNODE && | |
787 | dmu_objset_projectquota_enabled(zfsvfs->z_os)) | |
788 | pflags |= ZFS_PROJID; | |
789 | ||
790 | /* | |
791 | * Inherit project ID from parent if required. | |
792 | */ | |
793 | projid = zfs_inherit_projid(dzp); | |
794 | if (dzp->z_pflags & ZFS_PROJINHERIT) | |
795 | pflags |= ZFS_PROJINHERIT; | |
796 | } | |
797 | ||
428870ff | 798 | /* |
e1cfd73f | 799 | * No execs denied will be determined when zfs_mode_compute() is called. |
428870ff BB |
800 | */ |
801 | pflags |= acl_ids->z_aclp->z_hints & | |
802 | (ZFS_ACL_TRIVIAL|ZFS_INHERIT_ACE|ZFS_ACL_AUTO_INHERIT| | |
803 | ZFS_ACL_DEFAULTED|ZFS_ACL_PROTECTED); | |
34dc7c2f | 804 | |
428870ff BB |
805 | ZFS_TIME_ENCODE(&now, crtime); |
806 | ZFS_TIME_ENCODE(&now, ctime); | |
34dc7c2f | 807 | |
3558fd73 | 808 | if (vap->va_mask & ATTR_ATIME) { |
428870ff | 809 | ZFS_TIME_ENCODE(&vap->va_atime, atime); |
34dc7c2f | 810 | } else { |
428870ff | 811 | ZFS_TIME_ENCODE(&now, atime); |
34dc7c2f BB |
812 | } |
813 | ||
3558fd73 | 814 | if (vap->va_mask & ATTR_MTIME) { |
428870ff BB |
815 | ZFS_TIME_ENCODE(&vap->va_mtime, mtime); |
816 | } else { | |
817 | ZFS_TIME_ENCODE(&now, mtime); | |
818 | } | |
819 | ||
820 | /* Now add in all of the "SA" attributes */ | |
0037b49e | 821 | VERIFY(0 == sa_handle_get_from_db(zfsvfs->z_os, db, NULL, SA_HDL_SHARED, |
428870ff BB |
822 | &sa_hdl)); |
823 | ||
824 | /* | |
825 | * Setup the array of attributes to be replaced/set on the new file | |
826 | * | |
827 | * order for DMU_OT_ZNODE is critical since it needs to be constructed | |
828 | * in the old znode_phys_t format. Don't change this ordering | |
829 | */ | |
79c76d5b | 830 | sa_attrs = kmem_alloc(sizeof (sa_bulk_attr_t) * ZPL_END, KM_SLEEP); |
428870ff BB |
831 | |
832 | if (obj_type == DMU_OT_ZNODE) { | |
0037b49e | 833 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ATIME(zfsvfs), |
428870ff | 834 | NULL, &atime, 16); |
0037b49e | 835 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MTIME(zfsvfs), |
428870ff | 836 | NULL, &mtime, 16); |
0037b49e | 837 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CTIME(zfsvfs), |
428870ff | 838 | NULL, &ctime, 16); |
0037b49e | 839 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CRTIME(zfsvfs), |
428870ff | 840 | NULL, &crtime, 16); |
0037b49e | 841 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GEN(zfsvfs), |
428870ff | 842 | NULL, &gen, 8); |
0037b49e | 843 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MODE(zfsvfs), |
428870ff | 844 | NULL, &mode, 8); |
0037b49e | 845 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_SIZE(zfsvfs), |
428870ff | 846 | NULL, &size, 8); |
0037b49e | 847 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PARENT(zfsvfs), |
428870ff | 848 | NULL, &parent, 8); |
34dc7c2f | 849 | } else { |
0037b49e | 850 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MODE(zfsvfs), |
428870ff | 851 | NULL, &mode, 8); |
0037b49e | 852 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_SIZE(zfsvfs), |
428870ff | 853 | NULL, &size, 8); |
0037b49e | 854 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GEN(zfsvfs), |
428870ff | 855 | NULL, &gen, 8); |
0037b49e | 856 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_UID(zfsvfs), |
3558fd73 | 857 | NULL, &acl_ids->z_fuid, 8); |
0037b49e | 858 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GID(zfsvfs), |
3558fd73 | 859 | NULL, &acl_ids->z_fgid, 8); |
0037b49e | 860 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PARENT(zfsvfs), |
428870ff | 861 | NULL, &parent, 8); |
0037b49e | 862 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_FLAGS(zfsvfs), |
428870ff | 863 | NULL, &pflags, 8); |
0037b49e | 864 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ATIME(zfsvfs), |
428870ff | 865 | NULL, &atime, 16); |
0037b49e | 866 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MTIME(zfsvfs), |
428870ff | 867 | NULL, &mtime, 16); |
0037b49e | 868 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CTIME(zfsvfs), |
428870ff | 869 | NULL, &ctime, 16); |
0037b49e | 870 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CRTIME(zfsvfs), |
428870ff BB |
871 | NULL, &crtime, 16); |
872 | } | |
873 | ||
0037b49e | 874 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_LINKS(zfsvfs), NULL, &links, 8); |
428870ff BB |
875 | |
876 | if (obj_type == DMU_OT_ZNODE) { | |
0037b49e | 877 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_XATTR(zfsvfs), NULL, |
428870ff | 878 | &empty_xattr, 8); |
9c5167d1 NF |
879 | } else if (dmu_objset_projectquota_enabled(zfsvfs->z_os) && |
880 | pflags & ZFS_PROJID) { | |
881 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PROJID(zfsvfs), | |
882 | NULL, &projid, 8); | |
34dc7c2f | 883 | } |
428870ff | 884 | if (obj_type == DMU_OT_ZNODE || |
aa6d8c10 | 885 | (S_ISBLK(vap->va_mode) || S_ISCHR(vap->va_mode))) { |
0037b49e | 886 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_RDEV(zfsvfs), |
428870ff | 887 | NULL, &rdev, 8); |
428870ff BB |
888 | } |
889 | if (obj_type == DMU_OT_ZNODE) { | |
0037b49e | 890 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_FLAGS(zfsvfs), |
428870ff | 891 | NULL, &pflags, 8); |
0037b49e | 892 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_UID(zfsvfs), NULL, |
428870ff | 893 | &acl_ids->z_fuid, 8); |
0037b49e | 894 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GID(zfsvfs), NULL, |
428870ff | 895 | &acl_ids->z_fgid, 8); |
0037b49e | 896 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PAD(zfsvfs), NULL, pad, |
428870ff | 897 | sizeof (uint64_t) * 4); |
0037b49e | 898 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ZNODE_ACL(zfsvfs), NULL, |
428870ff BB |
899 | &acl_phys, sizeof (zfs_acl_phys_t)); |
900 | } else if (acl_ids->z_aclp->z_version >= ZFS_ACL_VERSION_FUID) { | |
0037b49e | 901 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_DACL_COUNT(zfsvfs), NULL, |
428870ff BB |
902 | &acl_ids->z_aclp->z_acl_count, 8); |
903 | locate.cb_aclp = acl_ids->z_aclp; | |
0037b49e | 904 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_DACL_ACES(zfsvfs), |
428870ff BB |
905 | zfs_acl_data_locator, &locate, |
906 | acl_ids->z_aclp->z_acl_bytes); | |
907 | mode = zfs_mode_compute(mode, acl_ids->z_aclp, &pflags, | |
908 | acl_ids->z_fuid, acl_ids->z_fgid); | |
909 | } | |
910 | ||
911 | VERIFY(sa_replace_all_by_template(sa_hdl, sa_attrs, cnt, tx) == 0); | |
34dc7c2f | 912 | |
34dc7c2f | 913 | if (!(flag & IS_ROOT_NODE)) { |
8d703987 BB |
914 | /* |
915 | * The call to zfs_znode_alloc() may fail if memory is low | |
916 | * via the call path: alloc_inode() -> inode_init_always() -> | |
917 | * security_inode_alloc() -> inode_alloc_security(). Since | |
918 | * the existing code is written such that zfs_mknode() can | |
919 | * not fail retry until sufficient memory has been reclaimed. | |
920 | */ | |
921 | do { | |
1a688994 | 922 | *zpp = zfs_znode_alloc(zfsvfs, db, 0, obj_type, sa_hdl); |
8d703987 BB |
923 | } while (*zpp == NULL); |
924 | ||
7b3e34ba BB |
925 | VERIFY(*zpp != NULL); |
926 | VERIFY(dzp != NULL); | |
34dc7c2f BB |
927 | } else { |
928 | /* | |
929 | * If we are creating the root node, the "parent" we | |
930 | * passed in is the znode for the root. | |
931 | */ | |
932 | *zpp = dzp; | |
428870ff BB |
933 | |
934 | (*zpp)->z_sa_hdl = sa_hdl; | |
34dc7c2f | 935 | } |
428870ff BB |
936 | |
937 | (*zpp)->z_pflags = pflags; | |
12fa7f34 | 938 | (*zpp)->z_mode = ZTOI(*zpp)->i_mode = mode; |
50c957f7 | 939 | (*zpp)->z_dnodesize = dnodesize; |
9c5167d1 | 940 | (*zpp)->z_projid = projid; |
428870ff | 941 | |
428870ff BB |
942 | if (obj_type == DMU_OT_ZNODE || |
943 | acl_ids->z_aclp->z_version < ZFS_ACL_VERSION_FUID) { | |
b0bc7a84 | 944 | VERIFY0(zfs_aclset_common(*zpp, acl_ids->z_aclp, cr, tx)); |
428870ff | 945 | } |
d1d7e268 | 946 | kmem_free(sa_attrs, sizeof (sa_bulk_attr_t) * ZPL_END); |
0037b49e | 947 | zfs_znode_hold_exit(zfsvfs, zh); |
34dc7c2f BB |
948 | } |
949 | ||
5484965a | 950 | /* |
d3cc8b15 WA |
951 | * Update in-core attributes. It is assumed the caller will be doing an |
952 | * sa_bulk_update to push the changes out. | |
5484965a BB |
953 | */ |
954 | void | |
955 | zfs_xvattr_set(znode_t *zp, xvattr_t *xvap, dmu_tx_t *tx) | |
956 | { | |
957 | xoptattr_t *xoap; | |
7bb1325f | 958 | boolean_t update_inode = B_FALSE; |
5484965a BB |
959 | |
960 | xoap = xva_getxoptattr(xvap); | |
961 | ASSERT(xoap); | |
962 | ||
963 | if (XVA_ISSET_REQ(xvap, XAT_CREATETIME)) { | |
964 | uint64_t times[2]; | |
965 | ZFS_TIME_ENCODE(&xoap->xoa_createtime, times); | |
966 | (void) sa_update(zp->z_sa_hdl, SA_ZPL_CRTIME(ZTOZSB(zp)), | |
967 | ×, sizeof (times), tx); | |
968 | XVA_SET_RTN(xvap, XAT_CREATETIME); | |
969 | } | |
970 | if (XVA_ISSET_REQ(xvap, XAT_READONLY)) { | |
971 | ZFS_ATTR_SET(zp, ZFS_READONLY, xoap->xoa_readonly, | |
972 | zp->z_pflags, tx); | |
973 | XVA_SET_RTN(xvap, XAT_READONLY); | |
974 | } | |
975 | if (XVA_ISSET_REQ(xvap, XAT_HIDDEN)) { | |
976 | ZFS_ATTR_SET(zp, ZFS_HIDDEN, xoap->xoa_hidden, | |
977 | zp->z_pflags, tx); | |
978 | XVA_SET_RTN(xvap, XAT_HIDDEN); | |
979 | } | |
980 | if (XVA_ISSET_REQ(xvap, XAT_SYSTEM)) { | |
981 | ZFS_ATTR_SET(zp, ZFS_SYSTEM, xoap->xoa_system, | |
982 | zp->z_pflags, tx); | |
983 | XVA_SET_RTN(xvap, XAT_SYSTEM); | |
984 | } | |
985 | if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE)) { | |
986 | ZFS_ATTR_SET(zp, ZFS_ARCHIVE, xoap->xoa_archive, | |
987 | zp->z_pflags, tx); | |
988 | XVA_SET_RTN(xvap, XAT_ARCHIVE); | |
989 | } | |
990 | if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE)) { | |
991 | ZFS_ATTR_SET(zp, ZFS_IMMUTABLE, xoap->xoa_immutable, | |
992 | zp->z_pflags, tx); | |
993 | XVA_SET_RTN(xvap, XAT_IMMUTABLE); | |
64c688d7 | 994 | |
7bb1325f | 995 | update_inode = B_TRUE; |
5484965a BB |
996 | } |
997 | if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK)) { | |
998 | ZFS_ATTR_SET(zp, ZFS_NOUNLINK, xoap->xoa_nounlink, | |
999 | zp->z_pflags, tx); | |
1000 | XVA_SET_RTN(xvap, XAT_NOUNLINK); | |
1001 | } | |
1002 | if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY)) { | |
1003 | ZFS_ATTR_SET(zp, ZFS_APPENDONLY, xoap->xoa_appendonly, | |
1004 | zp->z_pflags, tx); | |
1005 | XVA_SET_RTN(xvap, XAT_APPENDONLY); | |
64c688d7 | 1006 | |
7bb1325f | 1007 | update_inode = B_TRUE; |
5484965a BB |
1008 | } |
1009 | if (XVA_ISSET_REQ(xvap, XAT_NODUMP)) { | |
1010 | ZFS_ATTR_SET(zp, ZFS_NODUMP, xoap->xoa_nodump, | |
1011 | zp->z_pflags, tx); | |
1012 | XVA_SET_RTN(xvap, XAT_NODUMP); | |
1013 | } | |
1014 | if (XVA_ISSET_REQ(xvap, XAT_OPAQUE)) { | |
1015 | ZFS_ATTR_SET(zp, ZFS_OPAQUE, xoap->xoa_opaque, | |
1016 | zp->z_pflags, tx); | |
1017 | XVA_SET_RTN(xvap, XAT_OPAQUE); | |
1018 | } | |
1019 | if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED)) { | |
1020 | ZFS_ATTR_SET(zp, ZFS_AV_QUARANTINED, | |
1021 | xoap->xoa_av_quarantined, zp->z_pflags, tx); | |
1022 | XVA_SET_RTN(xvap, XAT_AV_QUARANTINED); | |
1023 | } | |
1024 | if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED)) { | |
1025 | ZFS_ATTR_SET(zp, ZFS_AV_MODIFIED, xoap->xoa_av_modified, | |
1026 | zp->z_pflags, tx); | |
1027 | XVA_SET_RTN(xvap, XAT_AV_MODIFIED); | |
1028 | } | |
1029 | if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP)) { | |
1030 | zfs_sa_set_scanstamp(zp, xvap, tx); | |
1031 | XVA_SET_RTN(xvap, XAT_AV_SCANSTAMP); | |
1032 | } | |
1033 | if (XVA_ISSET_REQ(xvap, XAT_REPARSE)) { | |
1034 | ZFS_ATTR_SET(zp, ZFS_REPARSE, xoap->xoa_reparse, | |
1035 | zp->z_pflags, tx); | |
1036 | XVA_SET_RTN(xvap, XAT_REPARSE); | |
1037 | } | |
1038 | if (XVA_ISSET_REQ(xvap, XAT_OFFLINE)) { | |
1039 | ZFS_ATTR_SET(zp, ZFS_OFFLINE, xoap->xoa_offline, | |
1040 | zp->z_pflags, tx); | |
1041 | XVA_SET_RTN(xvap, XAT_OFFLINE); | |
1042 | } | |
1043 | if (XVA_ISSET_REQ(xvap, XAT_SPARSE)) { | |
1044 | ZFS_ATTR_SET(zp, ZFS_SPARSE, xoap->xoa_sparse, | |
1045 | zp->z_pflags, tx); | |
1046 | XVA_SET_RTN(xvap, XAT_SPARSE); | |
1047 | } | |
9c5167d1 NF |
1048 | if (XVA_ISSET_REQ(xvap, XAT_PROJINHERIT)) { |
1049 | ZFS_ATTR_SET(zp, ZFS_PROJINHERIT, xoap->xoa_projinherit, | |
1050 | zp->z_pflags, tx); | |
1051 | XVA_SET_RTN(xvap, XAT_PROJINHERIT); | |
1052 | } | |
7bb1325f CC |
1053 | |
1054 | if (update_inode) | |
1055 | zfs_set_inode_flags(zp, ZTOI(zp)); | |
5484965a BB |
1056 | } |
1057 | ||
34dc7c2f | 1058 | int |
0037b49e | 1059 | zfs_zget(zfsvfs_t *zfsvfs, uint64_t obj_num, znode_t **zpp) |
34dc7c2f BB |
1060 | { |
1061 | dmu_object_info_t doi; | |
1062 | dmu_buf_t *db; | |
1063 | znode_t *zp; | |
c96c36fa | 1064 | znode_hold_t *zh; |
34dc7c2f | 1065 | int err; |
428870ff | 1066 | sa_handle_t *hdl; |
34dc7c2f BB |
1067 | |
1068 | *zpp = NULL; | |
1069 | ||
6f9548c4 | 1070 | again: |
0037b49e | 1071 | zh = zfs_znode_hold_enter(zfsvfs, obj_num); |
34dc7c2f | 1072 | |
0037b49e | 1073 | err = sa_buf_hold(zfsvfs->z_os, obj_num, NULL, &db); |
34dc7c2f | 1074 | if (err) { |
0037b49e | 1075 | zfs_znode_hold_exit(zfsvfs, zh); |
34dc7c2f BB |
1076 | return (err); |
1077 | } | |
1078 | ||
1079 | dmu_object_info_from_db(db, &doi); | |
428870ff BB |
1080 | if (doi.doi_bonus_type != DMU_OT_SA && |
1081 | (doi.doi_bonus_type != DMU_OT_ZNODE || | |
1082 | (doi.doi_bonus_type == DMU_OT_ZNODE && | |
1083 | doi.doi_bonus_size < sizeof (znode_phys_t)))) { | |
1084 | sa_buf_rele(db, NULL); | |
0037b49e | 1085 | zfs_znode_hold_exit(zfsvfs, zh); |
2e528b49 | 1086 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
1087 | } |
1088 | ||
428870ff BB |
1089 | hdl = dmu_buf_get_user(db); |
1090 | if (hdl != NULL) { | |
36df2843 | 1091 | zp = sa_get_userdata(hdl); |
34dc7c2f | 1092 | |
8ac67298 | 1093 | |
34dc7c2f | 1094 | /* |
428870ff BB |
1095 | * Since "SA" does immediate eviction we |
1096 | * should never find a sa handle that doesn't | |
1097 | * know about the znode. | |
34dc7c2f | 1098 | */ |
428870ff BB |
1099 | |
1100 | ASSERT3P(zp, !=, NULL); | |
1101 | ||
1102 | mutex_enter(&zp->z_lock); | |
34dc7c2f | 1103 | ASSERT3U(zp->z_id, ==, obj_num); |
98701490 | 1104 | /* |
41e1aa2a | 1105 | * If zp->z_unlinked is set, the znode is already marked |
0c468138 MFO |
1106 | * for deletion and should not be discovered. Check this |
1107 | * after checking igrab() due to fsetxattr() & O_TMPFILE. | |
41e1aa2a | 1108 | * |
98701490 CC |
1109 | * If igrab() returns NULL the VFS has independently |
1110 | * determined the inode should be evicted and has | |
1111 | * called iput_final() to start the eviction process. | |
1112 | * The SA handle is still valid but because the VFS | |
1113 | * requires that the eviction succeed we must drop | |
1114 | * our locks and references to allow the eviction to | |
1115 | * complete. The zfs_zget() may then be retried. | |
1116 | * | |
1117 | * This unlikely case could be optimized by registering | |
1118 | * a sops->drop_inode() callback. The callback would | |
1119 | * need to detect the active SA hold thereby informing | |
1120 | * the VFS that this inode should not be evicted. | |
1121 | */ | |
0c468138 MFO |
1122 | if (igrab(ZTOI(zp)) == NULL) { |
1123 | if (zp->z_unlinked) | |
1124 | err = SET_ERROR(ENOENT); | |
1125 | else | |
1126 | err = SET_ERROR(EAGAIN); | |
41e1aa2a HAS |
1127 | } else { |
1128 | *zpp = zp; | |
1129 | err = 0; | |
34dc7c2f | 1130 | } |
41e1aa2a | 1131 | |
34dc7c2f | 1132 | mutex_exit(&zp->z_lock); |
f3ad9cd6 | 1133 | sa_buf_rele(db, NULL); |
0037b49e | 1134 | zfs_znode_hold_exit(zfsvfs, zh); |
41e1aa2a HAS |
1135 | |
1136 | if (err == EAGAIN) { | |
1137 | /* inode might need this to finish evict */ | |
1138 | cond_resched(); | |
1139 | goto again; | |
1140 | } | |
34dc7c2f BB |
1141 | return (err); |
1142 | } | |
1143 | ||
1144 | /* | |
3558fd73 | 1145 | * Not found create new znode/vnode but only if file exists. |
428870ff BB |
1146 | * |
1147 | * There is a small window where zfs_vget() could | |
1148 | * find this object while a file create is still in | |
1149 | * progress. This is checked for in zfs_znode_alloc() | |
1150 | * | |
1151 | * if zfs_znode_alloc() fails it will drop the hold on the | |
1152 | * bonus buffer. | |
34dc7c2f | 1153 | */ |
0037b49e | 1154 | zp = zfs_znode_alloc(zfsvfs, db, doi.doi_data_block_size, |
1a688994 | 1155 | doi.doi_bonus_type, NULL); |
428870ff | 1156 | if (zp == NULL) { |
2e528b49 | 1157 | err = SET_ERROR(ENOENT); |
428870ff BB |
1158 | } else { |
1159 | *zpp = zp; | |
1160 | } | |
0037b49e | 1161 | zfs_znode_hold_exit(zfsvfs, zh); |
428870ff | 1162 | return (err); |
34dc7c2f BB |
1163 | } |
1164 | ||
1165 | int | |
1166 | zfs_rezget(znode_t *zp) | |
1167 | { | |
0037b49e | 1168 | zfsvfs_t *zfsvfs = ZTOZSB(zp); |
34dc7c2f BB |
1169 | dmu_object_info_t doi; |
1170 | dmu_buf_t *db; | |
1171 | uint64_t obj_num = zp->z_id; | |
428870ff | 1172 | uint64_t mode; |
dfbc8630 | 1173 | uint64_t links; |
abbf0bd4 | 1174 | sa_bulk_attr_t bulk[11]; |
34dc7c2f | 1175 | int err; |
428870ff BB |
1176 | int count = 0; |
1177 | uint64_t gen; | |
2c6abf15 | 1178 | uint64_t z_uid, z_gid; |
abbf0bd4 | 1179 | uint64_t atime[2], mtime[2], ctime[2], btime[2]; |
9c5167d1 | 1180 | uint64_t projid = ZFS_DEFAULT_PROJID; |
c96c36fa | 1181 | znode_hold_t *zh; |
34dc7c2f | 1182 | |
cbecb4fb CC |
1183 | /* |
1184 | * skip ctldir, otherwise they will always get invalidated. This will | |
1185 | * cause funny behaviour for the mounted snapdirs. Especially for | |
1186 | * Linux >= 3.18, d_invalidate will detach the mountpoint and prevent | |
1187 | * anyone automount it again as long as someone is still using the | |
1188 | * detached mount. | |
1189 | */ | |
1190 | if (zp->z_is_ctldir) | |
1191 | return (0); | |
1192 | ||
0037b49e | 1193 | zh = zfs_znode_hold_enter(zfsvfs, obj_num); |
34dc7c2f | 1194 | |
428870ff BB |
1195 | mutex_enter(&zp->z_acl_lock); |
1196 | if (zp->z_acl_cached) { | |
1197 | zfs_acl_free(zp->z_acl_cached); | |
1198 | zp->z_acl_cached = NULL; | |
1199 | } | |
428870ff | 1200 | mutex_exit(&zp->z_acl_lock); |
7b3e34ba | 1201 | |
228b461b | 1202 | rw_enter(&zp->z_xattr_lock, RW_WRITER); |
7b3e34ba BB |
1203 | if (zp->z_xattr_cached) { |
1204 | nvlist_free(zp->z_xattr_cached); | |
1205 | zp->z_xattr_cached = NULL; | |
1206 | } | |
7b3e34ba BB |
1207 | rw_exit(&zp->z_xattr_lock); |
1208 | ||
428870ff | 1209 | ASSERT(zp->z_sa_hdl == NULL); |
0037b49e | 1210 | err = sa_buf_hold(zfsvfs->z_os, obj_num, NULL, &db); |
34dc7c2f | 1211 | if (err) { |
0037b49e | 1212 | zfs_znode_hold_exit(zfsvfs, zh); |
34dc7c2f BB |
1213 | return (err); |
1214 | } | |
1215 | ||
1216 | dmu_object_info_from_db(db, &doi); | |
428870ff BB |
1217 | if (doi.doi_bonus_type != DMU_OT_SA && |
1218 | (doi.doi_bonus_type != DMU_OT_ZNODE || | |
1219 | (doi.doi_bonus_type == DMU_OT_ZNODE && | |
1220 | doi.doi_bonus_size < sizeof (znode_phys_t)))) { | |
1221 | sa_buf_rele(db, NULL); | |
0037b49e | 1222 | zfs_znode_hold_exit(zfsvfs, zh); |
2e528b49 | 1223 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
1224 | } |
1225 | ||
0037b49e | 1226 | zfs_znode_sa_init(zfsvfs, zp, db, doi.doi_bonus_type, NULL); |
428870ff BB |
1227 | |
1228 | /* reload cached values */ | |
0037b49e | 1229 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zfsvfs), NULL, |
428870ff | 1230 | &gen, sizeof (gen)); |
0037b49e | 1231 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zfsvfs), NULL, |
428870ff | 1232 | &zp->z_size, sizeof (zp->z_size)); |
0037b49e | 1233 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_LINKS(zfsvfs), NULL, |
dfbc8630 | 1234 | &links, sizeof (links)); |
0037b49e | 1235 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), NULL, |
428870ff | 1236 | &zp->z_pflags, sizeof (zp->z_pflags)); |
0037b49e | 1237 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zfsvfs), NULL, |
2c6abf15 | 1238 | &z_uid, sizeof (z_uid)); |
0037b49e | 1239 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zfsvfs), NULL, |
2c6abf15 | 1240 | &z_gid, sizeof (z_gid)); |
0037b49e | 1241 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zfsvfs), NULL, |
428870ff | 1242 | &mode, sizeof (mode)); |
0037b49e | 1243 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zfsvfs), NULL, |
9f5f0019 | 1244 | &atime, 16); |
0037b49e | 1245 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zfsvfs), NULL, |
9f5f0019 | 1246 | &mtime, 16); |
0037b49e | 1247 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zfsvfs), NULL, |
9f5f0019 | 1248 | &ctime, 16); |
abbf0bd4 | 1249 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CRTIME(zfsvfs), NULL, &btime, 16); |
428870ff | 1250 | |
428870ff BB |
1251 | if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count)) { |
1252 | zfs_znode_dmu_fini(zp); | |
0037b49e | 1253 | zfs_znode_hold_exit(zfsvfs, zh); |
2e528b49 | 1254 | return (SET_ERROR(EIO)); |
428870ff BB |
1255 | } |
1256 | ||
9c5167d1 NF |
1257 | if (dmu_objset_projectquota_enabled(zfsvfs->z_os)) { |
1258 | err = sa_lookup(zp->z_sa_hdl, SA_ZPL_PROJID(zfsvfs), | |
1259 | &projid, 8); | |
1260 | if (err != 0 && err != ENOENT) { | |
1261 | zfs_znode_dmu_fini(zp); | |
1262 | zfs_znode_hold_exit(zfsvfs, zh); | |
1263 | return (SET_ERROR(err)); | |
1264 | } | |
1265 | } | |
1266 | ||
1267 | zp->z_projid = projid; | |
12fa7f34 | 1268 | zp->z_mode = ZTOI(zp)->i_mode = mode; |
2c6abf15 NB |
1269 | zfs_uid_write(ZTOI(zp), z_uid); |
1270 | zfs_gid_write(ZTOI(zp), z_gid); | |
572e2857 | 1271 | |
9f5f0019 NB |
1272 | ZFS_TIME_DECODE(&ZTOI(zp)->i_atime, atime); |
1273 | ZFS_TIME_DECODE(&ZTOI(zp)->i_mtime, mtime); | |
1274 | ZFS_TIME_DECODE(&ZTOI(zp)->i_ctime, ctime); | |
abbf0bd4 | 1275 | ZFS_TIME_DECODE(&zp->z_btime, btime); |
9f5f0019 | 1276 | |
3ce85b5e | 1277 | if ((uint32_t)gen != ZTOI(zp)->i_generation) { |
428870ff | 1278 | zfs_znode_dmu_fini(zp); |
0037b49e | 1279 | zfs_znode_hold_exit(zfsvfs, zh); |
2e528b49 | 1280 | return (SET_ERROR(EIO)); |
34dc7c2f BB |
1281 | } |
1282 | ||
dfbc8630 | 1283 | set_nlink(ZTOI(zp), (uint32_t)links); |
7bb1325f | 1284 | zfs_set_inode_flags(zp, ZTOI(zp)); |
dfbc8630 | 1285 | |
34dc7c2f | 1286 | zp->z_blksz = doi.doi_data_block_size; |
a43570c5 | 1287 | zp->z_atime_dirty = B_FALSE; |
fc273894 | 1288 | zfs_znode_update_vfs(zp); |
34dc7c2f | 1289 | |
6a218566 AG |
1290 | /* |
1291 | * If the file has zero links, then it has been unlinked on the send | |
1292 | * side and it must be in the received unlinked set. | |
1293 | * We call zfs_znode_dmu_fini() now to prevent any accesses to the | |
e1cfd73f | 1294 | * stale data and to prevent automatic removal of the file in |
6a218566 AG |
1295 | * zfs_zinactive(). The file will be removed either when it is removed |
1296 | * on the send side and the next incremental stream is received or | |
1297 | * when the unlinked set gets processed. | |
1298 | */ | |
1299 | zp->z_unlinked = (ZTOI(zp)->i_nlink == 0); | |
1300 | if (zp->z_unlinked) | |
1301 | zfs_znode_dmu_fini(zp); | |
1302 | ||
0037b49e | 1303 | zfs_znode_hold_exit(zfsvfs, zh); |
34dc7c2f BB |
1304 | |
1305 | return (0); | |
1306 | } | |
1307 | ||
1308 | void | |
1309 | zfs_znode_delete(znode_t *zp, dmu_tx_t *tx) | |
1310 | { | |
0037b49e BB |
1311 | zfsvfs_t *zfsvfs = ZTOZSB(zp); |
1312 | objset_t *os = zfsvfs->z_os; | |
34dc7c2f | 1313 | uint64_t obj = zp->z_id; |
572e2857 | 1314 | uint64_t acl_obj = zfs_external_acl(zp); |
c96c36fa | 1315 | znode_hold_t *zh; |
34dc7c2f | 1316 | |
0037b49e | 1317 | zh = zfs_znode_hold_enter(zfsvfs, obj); |
572e2857 BB |
1318 | if (acl_obj) { |
1319 | VERIFY(!zp->z_is_sa); | |
b128c09f | 1320 | VERIFY(0 == dmu_object_free(os, acl_obj, tx)); |
572e2857 | 1321 | } |
b128c09f | 1322 | VERIFY(0 == dmu_object_free(os, obj, tx)); |
34dc7c2f | 1323 | zfs_znode_dmu_fini(zp); |
0037b49e | 1324 | zfs_znode_hold_exit(zfsvfs, zh); |
34dc7c2f BB |
1325 | } |
1326 | ||
1327 | void | |
1328 | zfs_zinactive(znode_t *zp) | |
1329 | { | |
0037b49e | 1330 | zfsvfs_t *zfsvfs = ZTOZSB(zp); |
34dc7c2f | 1331 | uint64_t z_id = zp->z_id; |
c96c36fa | 1332 | znode_hold_t *zh; |
34dc7c2f | 1333 | |
428870ff | 1334 | ASSERT(zp->z_sa_hdl); |
34dc7c2f BB |
1335 | |
1336 | /* | |
d6bd8eaa | 1337 | * Don't allow a zfs_zget() while were trying to release this znode. |
34dc7c2f | 1338 | */ |
0037b49e | 1339 | zh = zfs_znode_hold_enter(zfsvfs, z_id); |
d6bd8eaa | 1340 | |
34dc7c2f | 1341 | mutex_enter(&zp->z_lock); |
34dc7c2f BB |
1342 | |
1343 | /* | |
6a218566 AG |
1344 | * If this was the last reference to a file with no links, remove |
1345 | * the file from the file system unless the file system is mounted | |
1346 | * read-only. That can happen, for example, if the file system was | |
1347 | * originally read-write, the file was opened, then unlinked and | |
1348 | * the file system was made read-only before the file was finally | |
1349 | * closed. The file will remain in the unlinked set. | |
34dc7c2f BB |
1350 | */ |
1351 | if (zp->z_unlinked) { | |
6a218566 | 1352 | ASSERT(!zfsvfs->z_issnap); |
dcec0a12 | 1353 | if (!zfs_is_readonly(zfsvfs) && !zfs_unlink_suspend_progress) { |
6a218566 AG |
1354 | mutex_exit(&zp->z_lock); |
1355 | zfs_znode_hold_exit(zfsvfs, zh); | |
1356 | zfs_rmnode(zp); | |
1357 | return; | |
1358 | } | |
34dc7c2f | 1359 | } |
428870ff | 1360 | |
34dc7c2f BB |
1361 | mutex_exit(&zp->z_lock); |
1362 | zfs_znode_dmu_fini(zp); | |
d6bd8eaa | 1363 | |
0037b49e | 1364 | zfs_znode_hold_exit(zfsvfs, zh); |
34dc7c2f BB |
1365 | } |
1366 | ||
9c53e516 TK |
1367 | #if defined(HAVE_INODE_TIMESPEC64_TIMES) |
1368 | #define zfs_compare_timespec timespec64_compare | |
1369 | #else | |
1370 | #define zfs_compare_timespec timespec_compare | |
1371 | #endif | |
1372 | ||
1373 | /* | |
1374 | * Determine whether the znode's atime must be updated. The logic mostly | |
1375 | * duplicates the Linux kernel's relatime_need_update() functionality. | |
1376 | * This function is only called if the underlying filesystem actually has | |
1377 | * atime updates enabled. | |
1378 | */ | |
1379 | boolean_t | |
1380 | zfs_relatime_need_update(const struct inode *ip) | |
6d111134 | 1381 | { |
9c53e516 TK |
1382 | inode_timespec_t now; |
1383 | ||
1384 | gethrestime(&now); | |
1385 | /* | |
1386 | * In relatime mode, only update the atime if the previous atime | |
1387 | * is earlier than either the ctime or mtime or if at least a day | |
1388 | * has passed since the last update of atime. | |
1389 | */ | |
1390 | if (zfs_compare_timespec(&ip->i_mtime, &ip->i_atime) >= 0) | |
1391 | return (B_TRUE); | |
1392 | ||
1393 | if (zfs_compare_timespec(&ip->i_ctime, &ip->i_atime) >= 0) | |
1394 | return (B_TRUE); | |
6d111134 | 1395 | |
9c53e516 TK |
1396 | if ((hrtime_t)now.tv_sec - (hrtime_t)ip->i_atime.tv_sec >= 24*60*60) |
1397 | return (B_TRUE); | |
6d111134 | 1398 | |
9c53e516 | 1399 | return (B_FALSE); |
6d111134 TC |
1400 | } |
1401 | ||
6d111134 TC |
1402 | /* |
1403 | * Prepare to update znode time stamps. | |
1404 | * | |
1405 | * IN: zp - znode requiring timestamp update | |
0df9673f | 1406 | * flag - ATTR_MTIME, ATTR_CTIME flags |
6d111134 | 1407 | * |
0df9673f | 1408 | * OUT: zp - z_seq |
6d111134 TC |
1409 | * mtime - new mtime |
1410 | * ctime - new ctime | |
1411 | * | |
0df9673f CC |
1412 | * Note: We don't update atime here, because we rely on Linux VFS to do |
1413 | * atime updating. | |
6d111134 | 1414 | */ |
34dc7c2f | 1415 | void |
428870ff | 1416 | zfs_tstamp_update_setup(znode_t *zp, uint_t flag, uint64_t mtime[2], |
0df9673f | 1417 | uint64_t ctime[2]) |
34dc7c2f | 1418 | { |
6413c95f | 1419 | inode_timespec_t now; |
34dc7c2f | 1420 | |
34dc7c2f BB |
1421 | gethrestime(&now); |
1422 | ||
0df9673f | 1423 | zp->z_seq++; |
34dc7c2f | 1424 | |
3558fd73 | 1425 | if (flag & ATTR_MTIME) { |
428870ff | 1426 | ZFS_TIME_ENCODE(&now, mtime); |
9f5f0019 | 1427 | ZFS_TIME_DECODE(&(ZTOI(zp)->i_mtime), mtime); |
3558fd73 | 1428 | if (ZTOZSB(zp)->z_use_fuids) { |
428870ff BB |
1429 | zp->z_pflags |= (ZFS_ARCHIVE | |
1430 | ZFS_AV_MODIFIED); | |
1431 | } | |
34dc7c2f BB |
1432 | } |
1433 | ||
3558fd73 | 1434 | if (flag & ATTR_CTIME) { |
428870ff | 1435 | ZFS_TIME_ENCODE(&now, ctime); |
9f5f0019 | 1436 | ZFS_TIME_DECODE(&(ZTOI(zp)->i_ctime), ctime); |
3558fd73 | 1437 | if (ZTOZSB(zp)->z_use_fuids) |
428870ff | 1438 | zp->z_pflags |= ZFS_ARCHIVE; |
34dc7c2f BB |
1439 | } |
1440 | } | |
1441 | ||
34dc7c2f BB |
1442 | /* |
1443 | * Grow the block size for a file. | |
1444 | * | |
1445 | * IN: zp - znode of file to free data in. | |
1446 | * size - requested block size | |
1447 | * tx - open transaction. | |
1448 | * | |
1449 | * NOTE: this function assumes that the znode is write locked. | |
1450 | */ | |
1451 | void | |
1452 | zfs_grow_blocksize(znode_t *zp, uint64_t size, dmu_tx_t *tx) | |
1453 | { | |
1454 | int error; | |
1455 | u_longlong_t dummy; | |
1456 | ||
1457 | if (size <= zp->z_blksz) | |
1458 | return; | |
1459 | /* | |
1460 | * If the file size is already greater than the current blocksize, | |
1461 | * we will not grow. If there is more than one block in a file, | |
1462 | * the blocksize cannot change. | |
1463 | */ | |
428870ff | 1464 | if (zp->z_blksz && zp->z_size > zp->z_blksz) |
34dc7c2f BB |
1465 | return; |
1466 | ||
3558fd73 | 1467 | error = dmu_object_set_blocksize(ZTOZSB(zp)->z_os, zp->z_id, |
34dc7c2f | 1468 | size, 0, tx); |
428870ff | 1469 | |
34dc7c2f BB |
1470 | if (error == ENOTSUP) |
1471 | return; | |
c99c9001 | 1472 | ASSERT0(error); |
34dc7c2f BB |
1473 | |
1474 | /* What blocksize did we actually get? */ | |
428870ff | 1475 | dmu_object_size_from_db(sa_get_db(zp->z_sa_hdl), &zp->z_blksz, &dummy); |
34dc7c2f BB |
1476 | } |
1477 | ||
34dc7c2f | 1478 | /* |
b128c09f | 1479 | * Increase the file length |
34dc7c2f BB |
1480 | * |
1481 | * IN: zp - znode of file to free data in. | |
b128c09f | 1482 | * end - new end-of-file |
34dc7c2f | 1483 | * |
19d55079 | 1484 | * RETURN: 0 on success, error code on failure |
34dc7c2f | 1485 | */ |
b128c09f BB |
1486 | static int |
1487 | zfs_extend(znode_t *zp, uint64_t end) | |
34dc7c2f | 1488 | { |
0037b49e | 1489 | zfsvfs_t *zfsvfs = ZTOZSB(zp); |
b128c09f | 1490 | dmu_tx_t *tx; |
bd4dde8e | 1491 | zfs_locked_range_t *lr; |
b128c09f | 1492 | uint64_t newblksz; |
34dc7c2f BB |
1493 | int error; |
1494 | ||
34dc7c2f | 1495 | /* |
b128c09f | 1496 | * We will change zp_size, lock the whole file. |
34dc7c2f | 1497 | */ |
2cc479d0 | 1498 | lr = zfs_rangelock_enter(&zp->z_rangelock, 0, UINT64_MAX, RL_WRITER); |
34dc7c2f BB |
1499 | |
1500 | /* | |
1501 | * Nothing to do if file already at desired length. | |
1502 | */ | |
428870ff | 1503 | if (end <= zp->z_size) { |
2cc479d0 | 1504 | zfs_rangelock_exit(lr); |
34dc7c2f BB |
1505 | return (0); |
1506 | } | |
0037b49e | 1507 | tx = dmu_tx_create(zfsvfs->z_os); |
428870ff BB |
1508 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); |
1509 | zfs_sa_upgrade_txholds(tx, zp); | |
b128c09f | 1510 | if (end > zp->z_blksz && |
0037b49e | 1511 | (!ISP2(zp->z_blksz) || zp->z_blksz < zfsvfs->z_max_blksz)) { |
34dc7c2f BB |
1512 | /* |
1513 | * We are growing the file past the current block size. | |
1514 | */ | |
3558fd73 | 1515 | if (zp->z_blksz > ZTOZSB(zp)->z_max_blksz) { |
f1512ee6 MA |
1516 | /* |
1517 | * File's blocksize is already larger than the | |
1518 | * "recordsize" property. Only let it grow to | |
1519 | * the next power of 2. | |
1520 | */ | |
34dc7c2f | 1521 | ASSERT(!ISP2(zp->z_blksz)); |
f1512ee6 | 1522 | newblksz = MIN(end, 1 << highbit64(zp->z_blksz)); |
34dc7c2f | 1523 | } else { |
3558fd73 | 1524 | newblksz = MIN(end, ZTOZSB(zp)->z_max_blksz); |
34dc7c2f | 1525 | } |
b128c09f BB |
1526 | dmu_tx_hold_write(tx, zp->z_id, 0, newblksz); |
1527 | } else { | |
1528 | newblksz = 0; | |
34dc7c2f BB |
1529 | } |
1530 | ||
384f8a09 | 1531 | error = dmu_tx_assign(tx, TXG_WAIT); |
34dc7c2f | 1532 | if (error) { |
34dc7c2f | 1533 | dmu_tx_abort(tx); |
2cc479d0 | 1534 | zfs_rangelock_exit(lr); |
34dc7c2f BB |
1535 | return (error); |
1536 | } | |
1537 | ||
b128c09f BB |
1538 | if (newblksz) |
1539 | zfs_grow_blocksize(zp, newblksz, tx); | |
34dc7c2f | 1540 | |
428870ff BB |
1541 | zp->z_size = end; |
1542 | ||
3558fd73 | 1543 | VERIFY(0 == sa_update(zp->z_sa_hdl, SA_ZPL_SIZE(ZTOZSB(zp)), |
428870ff | 1544 | &zp->z_size, sizeof (zp->z_size), tx)); |
34dc7c2f | 1545 | |
2cc479d0 | 1546 | zfs_rangelock_exit(lr); |
34dc7c2f | 1547 | |
b128c09f | 1548 | dmu_tx_commit(tx); |
34dc7c2f | 1549 | |
b128c09f BB |
1550 | return (0); |
1551 | } | |
1552 | ||
223df016 TC |
1553 | /* |
1554 | * zfs_zero_partial_page - Modeled after update_pages() but | |
1555 | * with different arguments and semantics for use by zfs_freesp(). | |
1556 | * | |
1557 | * Zeroes a piece of a single page cache entry for zp at offset | |
1558 | * start and length len. | |
1559 | * | |
1560 | * Caller must acquire a range lock on the file for the region | |
1561 | * being zeroed in order that the ARC and page cache stay in sync. | |
1562 | */ | |
1563 | static void | |
1564 | zfs_zero_partial_page(znode_t *zp, uint64_t start, uint64_t len) | |
1565 | { | |
1566 | struct address_space *mp = ZTOI(zp)->i_mapping; | |
1567 | struct page *pp; | |
1568 | int64_t off; | |
1569 | void *pb; | |
1570 | ||
8b1899d3 | 1571 | ASSERT((start & PAGE_MASK) == ((start + len - 1) & PAGE_MASK)); |
223df016 | 1572 | |
8b1899d3 BB |
1573 | off = start & (PAGE_SIZE - 1); |
1574 | start &= PAGE_MASK; | |
223df016 | 1575 | |
8b1899d3 | 1576 | pp = find_lock_page(mp, start >> PAGE_SHIFT); |
223df016 TC |
1577 | if (pp) { |
1578 | if (mapping_writably_mapped(mp)) | |
1579 | flush_dcache_page(pp); | |
1580 | ||
1581 | pb = kmap(pp); | |
1582 | bzero(pb + off, len); | |
1583 | kunmap(pp); | |
1584 | ||
1585 | if (mapping_writably_mapped(mp)) | |
1586 | flush_dcache_page(pp); | |
1587 | ||
1588 | mark_page_accessed(pp); | |
1589 | SetPageUptodate(pp); | |
1590 | ClearPageError(pp); | |
1591 | unlock_page(pp); | |
8b1899d3 | 1592 | put_page(pp); |
223df016 TC |
1593 | } |
1594 | } | |
1595 | ||
b128c09f BB |
1596 | /* |
1597 | * Free space in a file. | |
1598 | * | |
1599 | * IN: zp - znode of file to free data in. | |
1600 | * off - start of section to free. | |
1601 | * len - length of section to free. | |
1602 | * | |
19d55079 | 1603 | * RETURN: 0 on success, error code on failure |
b128c09f BB |
1604 | */ |
1605 | static int | |
1606 | zfs_free_range(znode_t *zp, uint64_t off, uint64_t len) | |
1607 | { | |
0037b49e | 1608 | zfsvfs_t *zfsvfs = ZTOZSB(zp); |
bd4dde8e | 1609 | zfs_locked_range_t *lr; |
b128c09f BB |
1610 | int error; |
1611 | ||
1612 | /* | |
1613 | * Lock the range being freed. | |
1614 | */ | |
2cc479d0 | 1615 | lr = zfs_rangelock_enter(&zp->z_rangelock, off, len, RL_WRITER); |
b128c09f BB |
1616 | |
1617 | /* | |
1618 | * Nothing to do if file already at desired length. | |
1619 | */ | |
428870ff | 1620 | if (off >= zp->z_size) { |
2cc479d0 | 1621 | zfs_rangelock_exit(lr); |
b128c09f | 1622 | return (0); |
34dc7c2f BB |
1623 | } |
1624 | ||
428870ff BB |
1625 | if (off + len > zp->z_size) |
1626 | len = zp->z_size - off; | |
b128c09f | 1627 | |
0037b49e | 1628 | error = dmu_free_long_range(zfsvfs->z_os, zp->z_id, off, len); |
b128c09f | 1629 | |
223df016 TC |
1630 | /* |
1631 | * Zero partial page cache entries. This must be done under a | |
1632 | * range lock in order to keep the ARC and page cache in sync. | |
1633 | */ | |
1634 | if (zp->z_is_mapped) { | |
1635 | loff_t first_page, last_page, page_len; | |
1636 | loff_t first_page_offset, last_page_offset; | |
1637 | ||
1638 | /* first possible full page in hole */ | |
8b1899d3 | 1639 | first_page = (off + PAGE_SIZE - 1) >> PAGE_SHIFT; |
223df016 | 1640 | /* last page of hole */ |
8b1899d3 | 1641 | last_page = (off + len) >> PAGE_SHIFT; |
223df016 TC |
1642 | |
1643 | /* offset of first_page */ | |
8b1899d3 | 1644 | first_page_offset = first_page << PAGE_SHIFT; |
223df016 | 1645 | /* offset of last_page */ |
8b1899d3 | 1646 | last_page_offset = last_page << PAGE_SHIFT; |
223df016 | 1647 | |
cb08f063 TC |
1648 | /* truncate whole pages */ |
1649 | if (last_page_offset > first_page_offset) { | |
1650 | truncate_inode_pages_range(ZTOI(zp)->i_mapping, | |
1651 | first_page_offset, last_page_offset - 1); | |
1652 | } | |
1653 | ||
1654 | /* truncate sub-page ranges */ | |
223df016 TC |
1655 | if (first_page > last_page) { |
1656 | /* entire punched area within a single page */ | |
1657 | zfs_zero_partial_page(zp, off, len); | |
1658 | } else { | |
1659 | /* beginning of punched area at the end of a page */ | |
1660 | page_len = first_page_offset - off; | |
1661 | if (page_len > 0) | |
1662 | zfs_zero_partial_page(zp, off, page_len); | |
1663 | ||
1664 | /* end of punched area at the beginning of a page */ | |
1665 | page_len = off + len - last_page_offset; | |
1666 | if (page_len > 0) | |
1667 | zfs_zero_partial_page(zp, last_page_offset, | |
1668 | page_len); | |
1669 | } | |
1670 | } | |
2cc479d0 | 1671 | zfs_rangelock_exit(lr); |
34dc7c2f | 1672 | |
b128c09f BB |
1673 | return (error); |
1674 | } | |
1675 | ||
1676 | /* | |
1677 | * Truncate a file | |
1678 | * | |
1679 | * IN: zp - znode of file to free data in. | |
1680 | * end - new end-of-file. | |
1681 | * | |
19d55079 | 1682 | * RETURN: 0 on success, error code on failure |
b128c09f BB |
1683 | */ |
1684 | static int | |
1685 | zfs_trunc(znode_t *zp, uint64_t end) | |
1686 | { | |
0037b49e | 1687 | zfsvfs_t *zfsvfs = ZTOZSB(zp); |
b128c09f | 1688 | dmu_tx_t *tx; |
bd4dde8e | 1689 | zfs_locked_range_t *lr; |
b128c09f | 1690 | int error; |
572e2857 BB |
1691 | sa_bulk_attr_t bulk[2]; |
1692 | int count = 0; | |
b128c09f BB |
1693 | |
1694 | /* | |
1695 | * We will change zp_size, lock the whole file. | |
1696 | */ | |
2cc479d0 | 1697 | lr = zfs_rangelock_enter(&zp->z_rangelock, 0, UINT64_MAX, RL_WRITER); |
b128c09f BB |
1698 | |
1699 | /* | |
1700 | * Nothing to do if file already at desired length. | |
1701 | */ | |
428870ff | 1702 | if (end >= zp->z_size) { |
2cc479d0 | 1703 | zfs_rangelock_exit(lr); |
b128c09f BB |
1704 | return (0); |
1705 | } | |
1706 | ||
18a2485f FS |
1707 | error = dmu_free_long_range(zfsvfs->z_os, zp->z_id, end, |
1708 | DMU_OBJECT_END); | |
b128c09f | 1709 | if (error) { |
2cc479d0 | 1710 | zfs_rangelock_exit(lr); |
b128c09f BB |
1711 | return (error); |
1712 | } | |
0037b49e | 1713 | tx = dmu_tx_create(zfsvfs->z_os); |
428870ff BB |
1714 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); |
1715 | zfs_sa_upgrade_txholds(tx, zp); | |
19d55079 | 1716 | dmu_tx_mark_netfree(tx); |
7a8f0e80 | 1717 | error = dmu_tx_assign(tx, TXG_WAIT); |
b128c09f | 1718 | if (error) { |
b128c09f | 1719 | dmu_tx_abort(tx); |
2cc479d0 | 1720 | zfs_rangelock_exit(lr); |
b128c09f BB |
1721 | return (error); |
1722 | } | |
b128c09f | 1723 | |
428870ff | 1724 | zp->z_size = end; |
0037b49e | 1725 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zfsvfs), |
572e2857 | 1726 | NULL, &zp->z_size, sizeof (zp->z_size)); |
428870ff | 1727 | |
572e2857 BB |
1728 | if (end == 0) { |
1729 | zp->z_pflags &= ~ZFS_SPARSE; | |
0037b49e | 1730 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), |
572e2857 BB |
1731 | NULL, &zp->z_pflags, 8); |
1732 | } | |
1733 | VERIFY(sa_bulk_update(zp->z_sa_hdl, bulk, count, tx) == 0); | |
b128c09f | 1734 | |
34dc7c2f | 1735 | dmu_tx_commit(tx); |
2cc479d0 | 1736 | zfs_rangelock_exit(lr); |
34dc7c2f BB |
1737 | |
1738 | return (0); | |
1739 | } | |
1740 | ||
b128c09f BB |
1741 | /* |
1742 | * Free space in a file | |
1743 | * | |
1744 | * IN: zp - znode of file to free data in. | |
1745 | * off - start of range | |
1746 | * len - end of range (0 => EOF) | |
1747 | * flag - current file open mode flags. | |
1748 | * log - TRUE if this action should be logged | |
1749 | * | |
19d55079 | 1750 | * RETURN: 0 on success, error code on failure |
b128c09f BB |
1751 | */ |
1752 | int | |
1753 | zfs_freesp(znode_t *zp, uint64_t off, uint64_t len, int flag, boolean_t log) | |
1754 | { | |
b128c09f | 1755 | dmu_tx_t *tx; |
0037b49e BB |
1756 | zfsvfs_t *zfsvfs = ZTOZSB(zp); |
1757 | zilog_t *zilog = zfsvfs->z_log; | |
428870ff BB |
1758 | uint64_t mode; |
1759 | uint64_t mtime[2], ctime[2]; | |
1760 | sa_bulk_attr_t bulk[3]; | |
1761 | int count = 0; | |
b128c09f BB |
1762 | int error; |
1763 | ||
0037b49e | 1764 | if ((error = sa_lookup(zp->z_sa_hdl, SA_ZPL_MODE(zfsvfs), &mode, |
428870ff BB |
1765 | sizeof (mode))) != 0) |
1766 | return (error); | |
1767 | ||
1768 | if (off > zp->z_size) { | |
b128c09f BB |
1769 | error = zfs_extend(zp, off+len); |
1770 | if (error == 0 && log) | |
1771 | goto log; | |
223df016 | 1772 | goto out; |
b128c09f BB |
1773 | } |
1774 | ||
b128c09f BB |
1775 | if (len == 0) { |
1776 | error = zfs_trunc(zp, off); | |
1777 | } else { | |
1778 | if ((error = zfs_free_range(zp, off, len)) == 0 && | |
428870ff | 1779 | off + len > zp->z_size) |
b128c09f BB |
1780 | error = zfs_extend(zp, off+len); |
1781 | } | |
1782 | if (error || !log) | |
223df016 | 1783 | goto out; |
b128c09f | 1784 | log: |
0037b49e | 1785 | tx = dmu_tx_create(zfsvfs->z_os); |
428870ff BB |
1786 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); |
1787 | zfs_sa_upgrade_txholds(tx, zp); | |
384f8a09 | 1788 | error = dmu_tx_assign(tx, TXG_WAIT); |
b128c09f | 1789 | if (error) { |
b128c09f | 1790 | dmu_tx_abort(tx); |
223df016 | 1791 | goto out; |
b128c09f BB |
1792 | } |
1793 | ||
0037b49e BB |
1794 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zfsvfs), NULL, mtime, 16); |
1795 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zfsvfs), NULL, ctime, 16); | |
1796 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), | |
428870ff | 1797 | NULL, &zp->z_pflags, 8); |
0df9673f | 1798 | zfs_tstamp_update_setup(zp, CONTENT_MODIFIED, mtime, ctime); |
428870ff BB |
1799 | error = sa_bulk_update(zp->z_sa_hdl, bulk, count, tx); |
1800 | ASSERT(error == 0); | |
1801 | ||
b128c09f BB |
1802 | zfs_log_truncate(zilog, tx, TX_TRUNCATE, zp, off, len); |
1803 | ||
1804 | dmu_tx_commit(tx); | |
223df016 | 1805 | |
fc273894 | 1806 | zfs_znode_update_vfs(zp); |
223df016 TC |
1807 | error = 0; |
1808 | ||
1809 | out: | |
1810 | /* | |
1811 | * Truncate the page cache - for file truncate operations, use | |
1812 | * the purpose-built API for truncations. For punching operations, | |
cb08f063 | 1813 | * the truncation is handled under a range lock in zfs_free_range. |
223df016 TC |
1814 | */ |
1815 | if (len == 0) | |
1816 | truncate_setsize(ZTOI(zp), off); | |
223df016 | 1817 | return (error); |
b128c09f BB |
1818 | } |
1819 | ||
34dc7c2f BB |
1820 | void |
1821 | zfs_create_fs(objset_t *os, cred_t *cr, nvlist_t *zplprops, dmu_tx_t *tx) | |
1822 | { | |
22872ff5 | 1823 | struct super_block *sb; |
0037b49e | 1824 | zfsvfs_t *zfsvfs; |
428870ff | 1825 | uint64_t moid, obj, sa_obj, version; |
22872ff5 | 1826 | uint64_t sense = ZFS_CASE_SENSITIVE; |
34dc7c2f BB |
1827 | uint64_t norm = 0; |
1828 | nvpair_t *elem; | |
c96c36fa | 1829 | int size; |
34dc7c2f | 1830 | int error; |
22872ff5 BB |
1831 | int i; |
1832 | znode_t *rootzp = NULL; | |
1833 | vattr_t vattr; | |
1834 | znode_t *zp; | |
1835 | zfs_acl_ids_t acl_ids; | |
34dc7c2f BB |
1836 | |
1837 | /* | |
1838 | * First attempt to create master node. | |
1839 | */ | |
1840 | /* | |
1841 | * In an empty objset, there are no blocks to read and thus | |
1842 | * there can be no i/o errors (which we assert below). | |
1843 | */ | |
1844 | moid = MASTER_NODE_OBJ; | |
1845 | error = zap_create_claim(os, moid, DMU_OT_MASTER_NODE, | |
1846 | DMU_OT_NONE, 0, tx); | |
1847 | ASSERT(error == 0); | |
1848 | ||
1849 | /* | |
1850 | * Set starting attributes. | |
1851 | */ | |
428870ff | 1852 | version = zfs_zpl_version_map(spa_version(dmu_objset_spa(os))); |
34dc7c2f BB |
1853 | elem = NULL; |
1854 | while ((elem = nvlist_next_nvpair(zplprops, elem)) != NULL) { | |
1855 | /* For the moment we expect all zpl props to be uint64_ts */ | |
1856 | uint64_t val; | |
1857 | char *name; | |
1858 | ||
1859 | ASSERT(nvpair_type(elem) == DATA_TYPE_UINT64); | |
1860 | VERIFY(nvpair_value_uint64(elem, &val) == 0); | |
1861 | name = nvpair_name(elem); | |
1862 | if (strcmp(name, zfs_prop_to_name(ZFS_PROP_VERSION)) == 0) { | |
9babb374 BB |
1863 | if (val < version) |
1864 | version = val; | |
34dc7c2f BB |
1865 | } else { |
1866 | error = zap_update(os, moid, name, 8, 1, &val, tx); | |
1867 | } | |
1868 | ASSERT(error == 0); | |
1869 | if (strcmp(name, zfs_prop_to_name(ZFS_PROP_NORMALIZE)) == 0) | |
1870 | norm = val; | |
22872ff5 BB |
1871 | else if (strcmp(name, zfs_prop_to_name(ZFS_PROP_CASE)) == 0) |
1872 | sense = val; | |
34dc7c2f BB |
1873 | } |
1874 | ASSERT(version != 0); | |
9babb374 | 1875 | error = zap_update(os, moid, ZPL_VERSION_STR, 8, 1, &version, tx); |
34dc7c2f | 1876 | |
428870ff BB |
1877 | /* |
1878 | * Create zap object used for SA attribute registration | |
1879 | */ | |
1880 | ||
1881 | if (version >= ZPL_VERSION_SA) { | |
1882 | sa_obj = zap_create(os, DMU_OT_SA_MASTER_NODE, | |
1883 | DMU_OT_NONE, 0, tx); | |
1884 | error = zap_add(os, moid, ZFS_SA_ATTRS, 8, 1, &sa_obj, tx); | |
1885 | ASSERT(error == 0); | |
1886 | } else { | |
1887 | sa_obj = 0; | |
1888 | } | |
34dc7c2f BB |
1889 | /* |
1890 | * Create a delete queue. | |
1891 | */ | |
9babb374 | 1892 | obj = zap_create(os, DMU_OT_UNLINKED_SET, DMU_OT_NONE, 0, tx); |
34dc7c2f | 1893 | |
9babb374 | 1894 | error = zap_add(os, moid, ZFS_UNLINKED_SET, 8, 1, &obj, tx); |
34dc7c2f BB |
1895 | ASSERT(error == 0); |
1896 | ||
9babb374 | 1897 | /* |
0037b49e | 1898 | * Create root znode. Create minimal znode/inode/zfsvfs/sb |
22872ff5 | 1899 | * to allow zfs_mknode to work. |
9babb374 | 1900 | */ |
22872ff5 BB |
1901 | vattr.va_mask = ATTR_MODE|ATTR_UID|ATTR_GID; |
1902 | vattr.va_mode = S_IFDIR|0755; | |
1903 | vattr.va_uid = crgetuid(cr); | |
1904 | vattr.va_gid = crgetgid(cr); | |
1905 | ||
79c76d5b | 1906 | rootzp = kmem_cache_alloc(znode_cache, KM_SLEEP); |
a43570c5 TK |
1907 | rootzp->z_unlinked = B_FALSE; |
1908 | rootzp->z_atime_dirty = B_FALSE; | |
22872ff5 | 1909 | rootzp->z_is_sa = USE_SA(version, os); |
9c5167d1 | 1910 | rootzp->z_pflags = 0; |
22872ff5 | 1911 | |
0037b49e BB |
1912 | zfsvfs = kmem_zalloc(sizeof (zfsvfs_t), KM_SLEEP); |
1913 | zfsvfs->z_os = os; | |
1914 | zfsvfs->z_parent = zfsvfs; | |
1915 | zfsvfs->z_version = version; | |
1916 | zfsvfs->z_use_fuids = USE_FUIDS(version, os); | |
1917 | zfsvfs->z_use_sa = USE_SA(version, os); | |
1918 | zfsvfs->z_norm = norm; | |
22872ff5 | 1919 | |
79c76d5b | 1920 | sb = kmem_zalloc(sizeof (struct super_block), KM_SLEEP); |
0037b49e | 1921 | sb->s_fs_info = zfsvfs; |
22872ff5 BB |
1922 | |
1923 | ZTOI(rootzp)->i_sb = sb; | |
1924 | ||
1925 | error = sa_setup(os, sa_obj, zfs_attr_table, ZPL_END, | |
0037b49e | 1926 | &zfsvfs->z_attr_table); |
9babb374 | 1927 | |
22872ff5 | 1928 | ASSERT(error == 0); |
9babb374 | 1929 | |
60101509 | 1930 | /* |
22872ff5 BB |
1931 | * Fold case on file systems that are always or sometimes case |
1932 | * insensitive. | |
60101509 | 1933 | */ |
22872ff5 | 1934 | if (sense == ZFS_CASE_INSENSITIVE || sense == ZFS_CASE_MIXED) |
0037b49e | 1935 | zfsvfs->z_norm |= U8_TEXTPREP_TOUPPER; |
60101509 | 1936 | |
0037b49e BB |
1937 | mutex_init(&zfsvfs->z_znodes_lock, NULL, MUTEX_DEFAULT, NULL); |
1938 | list_create(&zfsvfs->z_all_znodes, sizeof (znode_t), | |
22872ff5 | 1939 | offsetof(znode_t, z_link_node)); |
60101509 | 1940 | |
c96c36fa | 1941 | size = MIN(1 << (highbit64(zfs_object_mutex_size)-1), ZFS_OBJ_MTX_MAX); |
0037b49e BB |
1942 | zfsvfs->z_hold_size = size; |
1943 | zfsvfs->z_hold_trees = vmem_zalloc(sizeof (avl_tree_t) * size, | |
1944 | KM_SLEEP); | |
1945 | zfsvfs->z_hold_locks = vmem_zalloc(sizeof (kmutex_t) * size, KM_SLEEP); | |
c96c36fa | 1946 | for (i = 0; i != size; i++) { |
0037b49e | 1947 | avl_create(&zfsvfs->z_hold_trees[i], zfs_znode_hold_compare, |
c96c36fa | 1948 | sizeof (znode_hold_t), offsetof(znode_hold_t, zh_node)); |
0037b49e | 1949 | mutex_init(&zfsvfs->z_hold_locks[i], NULL, MUTEX_DEFAULT, NULL); |
c96c36fa | 1950 | } |
60101509 | 1951 | |
22872ff5 BB |
1952 | VERIFY(0 == zfs_acl_ids_create(rootzp, IS_ROOT_NODE, &vattr, |
1953 | cr, NULL, &acl_ids)); | |
1954 | zfs_mknode(rootzp, &vattr, tx, cr, IS_ROOT_NODE, &zp, &acl_ids); | |
1955 | ASSERT3P(zp, ==, rootzp); | |
1956 | error = zap_add(os, moid, ZFS_ROOT_OBJ, 8, 1, &rootzp->z_id, tx); | |
1957 | ASSERT(error == 0); | |
1958 | zfs_acl_ids_free(&acl_ids); | |
60101509 | 1959 | |
22872ff5 BB |
1960 | atomic_set(&ZTOI(rootzp)->i_count, 0); |
1961 | sa_handle_destroy(rootzp->z_sa_hdl); | |
22872ff5 BB |
1962 | kmem_cache_free(znode_cache, rootzp); |
1963 | ||
c96c36fa | 1964 | for (i = 0; i != size; i++) { |
0037b49e BB |
1965 | avl_destroy(&zfsvfs->z_hold_trees[i]); |
1966 | mutex_destroy(&zfsvfs->z_hold_locks[i]); | |
c96c36fa | 1967 | } |
2708f716 | 1968 | |
c17486b2 GN |
1969 | mutex_destroy(&zfsvfs->z_znodes_lock); |
1970 | ||
0037b49e BB |
1971 | vmem_free(zfsvfs->z_hold_trees, sizeof (avl_tree_t) * size); |
1972 | vmem_free(zfsvfs->z_hold_locks, sizeof (kmutex_t) * size); | |
2708f716 | 1973 | kmem_free(sb, sizeof (struct super_block)); |
0037b49e | 1974 | kmem_free(zfsvfs, sizeof (zfsvfs_t)); |
34dc7c2f | 1975 | } |
34dc7c2f | 1976 | #endif /* _KERNEL */ |
428870ff | 1977 | |
34dc7c2f | 1978 | static int |
572e2857 BB |
1979 | zfs_sa_setup(objset_t *osp, sa_attr_type_t **sa_table) |
1980 | { | |
1981 | uint64_t sa_obj = 0; | |
1982 | int error; | |
1983 | ||
1984 | error = zap_lookup(osp, MASTER_NODE_OBJ, ZFS_SA_ATTRS, 8, 1, &sa_obj); | |
1985 | if (error != 0 && error != ENOENT) | |
1986 | return (error); | |
1987 | ||
1988 | error = sa_setup(osp, sa_obj, zfs_attr_table, ZPL_END, sa_table); | |
1989 | return (error); | |
1990 | } | |
1991 | ||
1992 | static int | |
1993 | zfs_grab_sa_handle(objset_t *osp, uint64_t obj, sa_handle_t **hdlp, | |
7b8518cb | 1994 | dmu_buf_t **db, void *tag) |
34dc7c2f | 1995 | { |
34dc7c2f | 1996 | dmu_object_info_t doi; |
34dc7c2f | 1997 | int error; |
428870ff | 1998 | |
7b8518cb | 1999 | if ((error = sa_buf_hold(osp, obj, tag, db)) != 0) |
34dc7c2f BB |
2000 | return (error); |
2001 | ||
572e2857 | 2002 | dmu_object_info_from_db(*db, &doi); |
428870ff BB |
2003 | if ((doi.doi_bonus_type != DMU_OT_SA && |
2004 | doi.doi_bonus_type != DMU_OT_ZNODE) || | |
d6320ddb BB |
2005 | (doi.doi_bonus_type == DMU_OT_ZNODE && |
2006 | doi.doi_bonus_size < sizeof (znode_phys_t))) { | |
7b8518cb | 2007 | sa_buf_rele(*db, tag); |
2e528b49 | 2008 | return (SET_ERROR(ENOTSUP)); |
34dc7c2f BB |
2009 | } |
2010 | ||
572e2857 BB |
2011 | error = sa_handle_get(osp, obj, NULL, SA_HDL_PRIVATE, hdlp); |
2012 | if (error != 0) { | |
7b8518cb | 2013 | sa_buf_rele(*db, tag); |
428870ff BB |
2014 | return (error); |
2015 | } | |
2016 | ||
572e2857 BB |
2017 | return (0); |
2018 | } | |
2019 | ||
65c7cc49 | 2020 | static void |
7b8518cb | 2021 | zfs_release_sa_handle(sa_handle_t *hdl, dmu_buf_t *db, void *tag) |
572e2857 BB |
2022 | { |
2023 | sa_handle_destroy(hdl); | |
7b8518cb | 2024 | sa_buf_rele(db, tag); |
572e2857 BB |
2025 | } |
2026 | ||
2027 | /* | |
2028 | * Given an object number, return its parent object number and whether | |
2029 | * or not the object is an extended attribute directory. | |
2030 | */ | |
2031 | static int | |
b23ad7f3 JJ |
2032 | zfs_obj_to_pobj(objset_t *osp, sa_handle_t *hdl, sa_attr_type_t *sa_table, |
2033 | uint64_t *pobjp, int *is_xattrdir) | |
572e2857 BB |
2034 | { |
2035 | uint64_t parent; | |
2036 | uint64_t pflags; | |
2037 | uint64_t mode; | |
b23ad7f3 | 2038 | uint64_t parent_mode; |
572e2857 | 2039 | sa_bulk_attr_t bulk[3]; |
b23ad7f3 JJ |
2040 | sa_handle_t *sa_hdl; |
2041 | dmu_buf_t *sa_db; | |
572e2857 BB |
2042 | int count = 0; |
2043 | int error; | |
2044 | ||
2045 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_PARENT], NULL, | |
2046 | &parent, sizeof (parent)); | |
428870ff | 2047 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_FLAGS], NULL, |
572e2857 | 2048 | &pflags, sizeof (pflags)); |
428870ff | 2049 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_MODE], NULL, |
572e2857 | 2050 | &mode, sizeof (mode)); |
428870ff | 2051 | |
572e2857 | 2052 | if ((error = sa_bulk_lookup(hdl, bulk, count)) != 0) |
428870ff | 2053 | return (error); |
572e2857 | 2054 | |
b23ad7f3 JJ |
2055 | /* |
2056 | * When a link is removed its parent pointer is not changed and will | |
2057 | * be invalid. There are two cases where a link is removed but the | |
2058 | * file stays around, when it goes to the delete queue and when there | |
2059 | * are additional links. | |
2060 | */ | |
2061 | error = zfs_grab_sa_handle(osp, parent, &sa_hdl, &sa_db, FTAG); | |
2062 | if (error != 0) | |
2063 | return (error); | |
2064 | ||
2065 | error = sa_lookup(sa_hdl, ZPL_MODE, &parent_mode, sizeof (parent_mode)); | |
2066 | zfs_release_sa_handle(sa_hdl, sa_db, FTAG); | |
2067 | if (error != 0) | |
2068 | return (error); | |
2069 | ||
428870ff | 2070 | *is_xattrdir = ((pflags & ZFS_XATTR) != 0) && S_ISDIR(mode); |
34dc7c2f | 2071 | |
b23ad7f3 JJ |
2072 | /* |
2073 | * Extended attributes can be applied to files, directories, etc. | |
2074 | * Otherwise the parent must be a directory. | |
2075 | */ | |
2076 | if (!*is_xattrdir && !S_ISDIR(parent_mode)) | |
ecb2b7dc | 2077 | return (SET_ERROR(EINVAL)); |
b23ad7f3 JJ |
2078 | |
2079 | *pobjp = parent; | |
2080 | ||
34dc7c2f BB |
2081 | return (0); |
2082 | } | |
2083 | ||
572e2857 BB |
2084 | /* |
2085 | * Given an object number, return some zpl level statistics | |
2086 | */ | |
2087 | static int | |
2088 | zfs_obj_to_stats_impl(sa_handle_t *hdl, sa_attr_type_t *sa_table, | |
2089 | zfs_stat_t *sb) | |
34dc7c2f | 2090 | { |
572e2857 BB |
2091 | sa_bulk_attr_t bulk[4]; |
2092 | int count = 0; | |
2093 | ||
2094 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_MODE], NULL, | |
2095 | &sb->zs_mode, sizeof (sb->zs_mode)); | |
2096 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_GEN], NULL, | |
2097 | &sb->zs_gen, sizeof (sb->zs_gen)); | |
2098 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_LINKS], NULL, | |
2099 | &sb->zs_links, sizeof (sb->zs_links)); | |
2100 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_CTIME], NULL, | |
2101 | &sb->zs_ctime, sizeof (sb->zs_ctime)); | |
2102 | ||
2103 | return (sa_bulk_lookup(hdl, bulk, count)); | |
2104 | } | |
2105 | ||
2106 | static int | |
2107 | zfs_obj_to_path_impl(objset_t *osp, uint64_t obj, sa_handle_t *hdl, | |
2108 | sa_attr_type_t *sa_table, char *buf, int len) | |
2109 | { | |
2110 | sa_handle_t *sa_hdl; | |
2111 | sa_handle_t *prevhdl = NULL; | |
2112 | dmu_buf_t *prevdb = NULL; | |
2113 | dmu_buf_t *sa_db = NULL; | |
34dc7c2f BB |
2114 | char *path = buf + len - 1; |
2115 | int error; | |
2116 | ||
2117 | *path = '\0'; | |
572e2857 | 2118 | sa_hdl = hdl; |
428870ff | 2119 | |
64c1dcef PD |
2120 | uint64_t deleteq_obj; |
2121 | VERIFY0(zap_lookup(osp, MASTER_NODE_OBJ, | |
2122 | ZFS_UNLINKED_SET, sizeof (uint64_t), 1, &deleteq_obj)); | |
2123 | error = zap_lookup_int(osp, deleteq_obj, obj); | |
2124 | if (error == 0) { | |
2125 | return (ESTALE); | |
2126 | } else if (error != ENOENT) { | |
2127 | return (error); | |
2128 | } | |
2129 | error = 0; | |
2130 | ||
34dc7c2f | 2131 | for (;;) { |
17897ce2 | 2132 | uint64_t pobj = 0; |
34dc7c2f BB |
2133 | char component[MAXNAMELEN + 2]; |
2134 | size_t complen; | |
17897ce2 | 2135 | int is_xattrdir = 0; |
34dc7c2f | 2136 | |
4f22619a KT |
2137 | if (prevdb) { |
2138 | ASSERT(prevhdl != NULL); | |
7b8518cb | 2139 | zfs_release_sa_handle(prevhdl, prevdb, FTAG); |
4f22619a | 2140 | } |
572e2857 | 2141 | |
b23ad7f3 | 2142 | if ((error = zfs_obj_to_pobj(osp, sa_hdl, sa_table, &pobj, |
572e2857 | 2143 | &is_xattrdir)) != 0) |
34dc7c2f BB |
2144 | break; |
2145 | ||
2146 | if (pobj == obj) { | |
2147 | if (path[0] != '/') | |
2148 | *--path = '/'; | |
2149 | break; | |
2150 | } | |
2151 | ||
2152 | component[0] = '/'; | |
2153 | if (is_xattrdir) { | |
2154 | (void) sprintf(component + 1, "<xattrdir>"); | |
2155 | } else { | |
2156 | error = zap_value_search(osp, pobj, obj, | |
2157 | ZFS_DIRENT_OBJ(-1ULL), component + 1); | |
2158 | if (error != 0) | |
2159 | break; | |
2160 | } | |
2161 | ||
2162 | complen = strlen(component); | |
2163 | path -= complen; | |
2164 | ASSERT(path >= buf); | |
2165 | bcopy(component, path, complen); | |
2166 | obj = pobj; | |
572e2857 BB |
2167 | |
2168 | if (sa_hdl != hdl) { | |
2169 | prevhdl = sa_hdl; | |
2170 | prevdb = sa_db; | |
2171 | } | |
7b8518cb | 2172 | error = zfs_grab_sa_handle(osp, obj, &sa_hdl, &sa_db, FTAG); |
572e2857 BB |
2173 | if (error != 0) { |
2174 | sa_hdl = prevhdl; | |
2175 | sa_db = prevdb; | |
2176 | break; | |
2177 | } | |
2178 | } | |
2179 | ||
2180 | if (sa_hdl != NULL && sa_hdl != hdl) { | |
2181 | ASSERT(sa_db != NULL); | |
7b8518cb | 2182 | zfs_release_sa_handle(sa_hdl, sa_db, FTAG); |
34dc7c2f BB |
2183 | } |
2184 | ||
2185 | if (error == 0) | |
2186 | (void) memmove(buf, path, buf + len - path); | |
428870ff | 2187 | |
34dc7c2f BB |
2188 | return (error); |
2189 | } | |
572e2857 BB |
2190 | |
2191 | int | |
2192 | zfs_obj_to_path(objset_t *osp, uint64_t obj, char *buf, int len) | |
2193 | { | |
2194 | sa_attr_type_t *sa_table; | |
2195 | sa_handle_t *hdl; | |
2196 | dmu_buf_t *db; | |
2197 | int error; | |
2198 | ||
2199 | error = zfs_sa_setup(osp, &sa_table); | |
2200 | if (error != 0) | |
2201 | return (error); | |
2202 | ||
7b8518cb | 2203 | error = zfs_grab_sa_handle(osp, obj, &hdl, &db, FTAG); |
572e2857 BB |
2204 | if (error != 0) |
2205 | return (error); | |
2206 | ||
2207 | error = zfs_obj_to_path_impl(osp, obj, hdl, sa_table, buf, len); | |
2208 | ||
7b8518cb | 2209 | zfs_release_sa_handle(hdl, db, FTAG); |
572e2857 BB |
2210 | return (error); |
2211 | } | |
2212 | ||
2213 | int | |
2214 | zfs_obj_to_stats(objset_t *osp, uint64_t obj, zfs_stat_t *sb, | |
2215 | char *buf, int len) | |
2216 | { | |
2217 | char *path = buf + len - 1; | |
2218 | sa_attr_type_t *sa_table; | |
2219 | sa_handle_t *hdl; | |
2220 | dmu_buf_t *db; | |
2221 | int error; | |
2222 | ||
2223 | *path = '\0'; | |
2224 | ||
2225 | error = zfs_sa_setup(osp, &sa_table); | |
2226 | if (error != 0) | |
2227 | return (error); | |
2228 | ||
7b8518cb | 2229 | error = zfs_grab_sa_handle(osp, obj, &hdl, &db, FTAG); |
572e2857 BB |
2230 | if (error != 0) |
2231 | return (error); | |
2232 | ||
2233 | error = zfs_obj_to_stats_impl(hdl, sa_table, sb); | |
2234 | if (error != 0) { | |
7b8518cb | 2235 | zfs_release_sa_handle(hdl, db, FTAG); |
572e2857 BB |
2236 | return (error); |
2237 | } | |
2238 | ||
2239 | error = zfs_obj_to_path_impl(osp, obj, hdl, sa_table, buf, len); | |
2240 | ||
7b8518cb | 2241 | zfs_release_sa_handle(hdl, db, FTAG); |
572e2857 BB |
2242 | return (error); |
2243 | } | |
c28b2279 | 2244 | |
93ce2b4c | 2245 | #if defined(_KERNEL) |
c28b2279 BB |
2246 | EXPORT_SYMBOL(zfs_create_fs); |
2247 | EXPORT_SYMBOL(zfs_obj_to_path); | |
0720116d | 2248 | |
02730c33 | 2249 | /* CSTYLED */ |
0720116d BB |
2250 | module_param(zfs_object_mutex_size, uint, 0644); |
2251 | MODULE_PARM_DESC(zfs_object_mutex_size, "Size of znode hold array"); | |
dcec0a12 AP |
2252 | module_param(zfs_unlink_suspend_progress, int, 0644); |
2253 | MODULE_PARM_DESC(zfs_unlink_suspend_progress, "Set to prevent async unlinks " | |
2254 | "(debug - leaks space into the unlinked set)"); | |
c28b2279 | 2255 | #endif |