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Commit | Line | Data |
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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> | |
3558fd73 | 54 | #include <sys/zfs_vnops.h> |
ebe7e575 | 55 | #include <sys/zfs_ctldir.h> |
428870ff | 56 | #include <sys/dnode.h> |
34dc7c2f BB |
57 | #include <sys/fs/zfs.h> |
58 | #include <sys/kidmap.h> | |
3558fd73 | 59 | #include <sys/zpl.h> |
34dc7c2f BB |
60 | #endif /* _KERNEL */ |
61 | ||
62 | #include <sys/dmu.h> | |
63 | #include <sys/refcount.h> | |
64 | #include <sys/stat.h> | |
65 | #include <sys/zap.h> | |
66 | #include <sys/zfs_znode.h> | |
428870ff BB |
67 | #include <sys/sa.h> |
68 | #include <sys/zfs_sa.h> | |
572e2857 | 69 | #include <sys/zfs_stat.h> |
34dc7c2f BB |
70 | |
71 | #include "zfs_prop.h" | |
428870ff | 72 | #include "zfs_comutil.h" |
34dc7c2f | 73 | |
b128c09f BB |
74 | /* |
75 | * Define ZNODE_STATS to turn on statistic gathering. By default, it is only | |
76 | * turned on when DEBUG is also defined. | |
77 | */ | |
78 | #ifdef DEBUG | |
79 | #define ZNODE_STATS | |
80 | #endif /* DEBUG */ | |
81 | ||
82 | #ifdef ZNODE_STATS | |
83 | #define ZNODE_STAT_ADD(stat) ((stat)++) | |
84 | #else | |
85 | #define ZNODE_STAT_ADD(stat) /* nothing */ | |
86 | #endif /* ZNODE_STATS */ | |
87 | ||
34dc7c2f BB |
88 | /* |
89 | * Functions needed for userland (ie: libzpool) are not put under | |
90 | * #ifdef_KERNEL; the rest of the functions have dependencies | |
91 | * (such as VFS logic) that will not compile easily in userland. | |
92 | */ | |
93 | #ifdef _KERNEL | |
9babb374 | 94 | |
b128c09f | 95 | static kmem_cache_t *znode_cache = NULL; |
34dc7c2f | 96 | |
34dc7c2f BB |
97 | /*ARGSUSED*/ |
98 | static int | |
b128c09f | 99 | zfs_znode_cache_constructor(void *buf, void *arg, int kmflags) |
34dc7c2f BB |
100 | { |
101 | znode_t *zp = buf; | |
102 | ||
3558fd73 | 103 | inode_init_once(ZTOI(zp)); |
b128c09f BB |
104 | list_link_init(&zp->z_link_node); |
105 | ||
34dc7c2f | 106 | mutex_init(&zp->z_lock, NULL, MUTEX_DEFAULT, NULL); |
34dc7c2f BB |
107 | rw_init(&zp->z_parent_lock, NULL, RW_DEFAULT, NULL); |
108 | rw_init(&zp->z_name_lock, NULL, RW_DEFAULT, NULL); | |
109 | mutex_init(&zp->z_acl_lock, NULL, MUTEX_DEFAULT, NULL); | |
82a37189 | 110 | rw_init(&zp->z_xattr_lock, NULL, RW_DEFAULT, NULL); |
34dc7c2f BB |
111 | |
112 | mutex_init(&zp->z_range_lock, NULL, MUTEX_DEFAULT, NULL); | |
113 | avl_create(&zp->z_range_avl, zfs_range_compare, | |
114 | sizeof (rl_t), offsetof(rl_t, r_node)); | |
115 | ||
b128c09f | 116 | zp->z_dirlocks = NULL; |
45d1cae3 | 117 | zp->z_acl_cached = NULL; |
82a37189 | 118 | zp->z_xattr_cached = NULL; |
e89260a1 | 119 | zp->z_xattr_parent = NULL; |
572e2857 | 120 | zp->z_moved = 0; |
34dc7c2f BB |
121 | return (0); |
122 | } | |
123 | ||
124 | /*ARGSUSED*/ | |
125 | static void | |
b128c09f | 126 | zfs_znode_cache_destructor(void *buf, void *arg) |
34dc7c2f BB |
127 | { |
128 | znode_t *zp = buf; | |
129 | ||
b128c09f | 130 | ASSERT(!list_link_active(&zp->z_link_node)); |
34dc7c2f | 131 | mutex_destroy(&zp->z_lock); |
34dc7c2f BB |
132 | rw_destroy(&zp->z_parent_lock); |
133 | rw_destroy(&zp->z_name_lock); | |
134 | mutex_destroy(&zp->z_acl_lock); | |
82a37189 | 135 | rw_destroy(&zp->z_xattr_lock); |
34dc7c2f BB |
136 | avl_destroy(&zp->z_range_avl); |
137 | mutex_destroy(&zp->z_range_lock); | |
138 | ||
b128c09f | 139 | ASSERT(zp->z_dirlocks == NULL); |
45d1cae3 | 140 | ASSERT(zp->z_acl_cached == NULL); |
82a37189 | 141 | ASSERT(zp->z_xattr_cached == NULL); |
e89260a1 | 142 | ASSERT(zp->z_xattr_parent == NULL); |
b128c09f BB |
143 | } |
144 | ||
34dc7c2f BB |
145 | void |
146 | zfs_znode_init(void) | |
147 | { | |
148 | /* | |
149 | * Initialize zcache | |
150 | */ | |
151 | ASSERT(znode_cache == NULL); | |
152 | znode_cache = kmem_cache_create("zfs_znode_cache", | |
153 | sizeof (znode_t), 0, zfs_znode_cache_constructor, | |
3558fd73 | 154 | zfs_znode_cache_destructor, NULL, NULL, NULL, KMC_KMEM); |
34dc7c2f BB |
155 | } |
156 | ||
157 | void | |
158 | zfs_znode_fini(void) | |
159 | { | |
34dc7c2f BB |
160 | /* |
161 | * Cleanup zcache | |
162 | */ | |
163 | if (znode_cache) | |
164 | kmem_cache_destroy(znode_cache); | |
165 | znode_cache = NULL; | |
166 | } | |
167 | ||
34dc7c2f | 168 | int |
3558fd73 | 169 | zfs_create_share_dir(zfs_sb_t *zsb, dmu_tx_t *tx) |
34dc7c2f | 170 | { |
3c9609b3 | 171 | #ifdef HAVE_SMB_SHARE |
9babb374 BB |
172 | zfs_acl_ids_t acl_ids; |
173 | vattr_t vattr; | |
174 | znode_t *sharezp; | |
175 | vnode_t *vp; | |
176 | znode_t *zp; | |
177 | int error; | |
34dc7c2f | 178 | |
9babb374 | 179 | vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; |
3558fd73 | 180 | vattr.va_mode = S_IFDIR | 0555; |
9babb374 BB |
181 | vattr.va_uid = crgetuid(kcred); |
182 | vattr.va_gid = crgetgid(kcred); | |
34dc7c2f | 183 | |
691f6ac4 | 184 | sharezp = kmem_cache_alloc(znode_cache, KM_PUSHPAGE); |
572e2857 | 185 | sharezp->z_moved = 0; |
9babb374 BB |
186 | sharezp->z_unlinked = 0; |
187 | sharezp->z_atime_dirty = 0; | |
188 | sharezp->z_zfsvfs = zfsvfs; | |
428870ff | 189 | sharezp->z_is_sa = zfsvfs->z_use_sa; |
34dc7c2f | 190 | |
9babb374 BB |
191 | vp = ZTOV(sharezp); |
192 | vn_reinit(vp); | |
193 | vp->v_type = VDIR; | |
34dc7c2f | 194 | |
9babb374 BB |
195 | VERIFY(0 == zfs_acl_ids_create(sharezp, IS_ROOT_NODE, &vattr, |
196 | kcred, NULL, &acl_ids)); | |
428870ff | 197 | zfs_mknode(sharezp, &vattr, tx, kcred, IS_ROOT_NODE, &zp, &acl_ids); |
9babb374 BB |
198 | ASSERT3P(zp, ==, sharezp); |
199 | ASSERT(!vn_in_dnlc(ZTOV(sharezp))); /* not valid to move */ | |
200 | POINTER_INVALIDATE(&sharezp->z_zfsvfs); | |
201 | error = zap_add(zfsvfs->z_os, MASTER_NODE_OBJ, | |
202 | ZFS_SHARES_DIR, 8, 1, &sharezp->z_id, tx); | |
203 | zfsvfs->z_shares_dir = sharezp->z_id; | |
204 | ||
205 | zfs_acl_ids_free(&acl_ids); | |
3558fd73 | 206 | // ZTOV(sharezp)->v_count = 0; |
428870ff | 207 | sa_handle_destroy(sharezp->z_sa_hdl); |
9babb374 | 208 | kmem_cache_free(znode_cache, sharezp); |
34dc7c2f | 209 | |
9babb374 | 210 | return (error); |
9ee7fac5 BB |
211 | #else |
212 | return (0); | |
3c9609b3 | 213 | #endif /* HAVE_SMB_SHARE */ |
34dc7c2f BB |
214 | } |
215 | ||
34dc7c2f | 216 | static void |
3558fd73 | 217 | zfs_znode_sa_init(zfs_sb_t *zsb, znode_t *zp, |
428870ff | 218 | dmu_buf_t *db, dmu_object_type_t obj_type, sa_handle_t *sa_hdl) |
34dc7c2f | 219 | { |
3558fd73 | 220 | ASSERT(MUTEX_HELD(ZFS_OBJ_MUTEX(zsb, zp->z_id))); |
34dc7c2f BB |
221 | |
222 | mutex_enter(&zp->z_lock); | |
223 | ||
428870ff BB |
224 | ASSERT(zp->z_sa_hdl == NULL); |
225 | ASSERT(zp->z_acl_cached == NULL); | |
226 | if (sa_hdl == NULL) { | |
3558fd73 | 227 | VERIFY(0 == sa_handle_get_from_db(zsb->z_os, db, zp, |
428870ff BB |
228 | SA_HDL_SHARED, &zp->z_sa_hdl)); |
229 | } else { | |
230 | zp->z_sa_hdl = sa_hdl; | |
231 | sa_set_userp(sa_hdl, zp); | |
232 | } | |
34dc7c2f | 233 | |
428870ff | 234 | zp->z_is_sa = (obj_type == DMU_OT_SA) ? B_TRUE : B_FALSE; |
34dc7c2f | 235 | |
34dc7c2f | 236 | mutex_exit(&zp->z_lock); |
34dc7c2f BB |
237 | } |
238 | ||
239 | void | |
240 | zfs_znode_dmu_fini(znode_t *zp) | |
241 | { | |
3558fd73 | 242 | ASSERT(MUTEX_HELD(ZFS_OBJ_MUTEX(ZTOZSB(zp), zp->z_id)) || |
b128c09f | 243 | zp->z_unlinked || |
3558fd73 | 244 | RW_WRITE_HELD(&ZTOZSB(zp)->z_teardown_inactive_lock)); |
428870ff BB |
245 | |
246 | sa_handle_destroy(zp->z_sa_hdl); | |
247 | zp->z_sa_hdl = NULL; | |
34dc7c2f BB |
248 | } |
249 | ||
250 | /* | |
3558fd73 BB |
251 | * Called by new_inode() to allocate a new inode. |
252 | */ | |
253 | int | |
254 | zfs_inode_alloc(struct super_block *sb, struct inode **ip) | |
255 | { | |
256 | znode_t *zp; | |
257 | ||
691f6ac4 | 258 | zp = kmem_cache_alloc(znode_cache, KM_PUSHPAGE); |
3558fd73 BB |
259 | *ip = ZTOI(zp); |
260 | ||
261 | return (0); | |
262 | } | |
263 | ||
264 | /* | |
265 | * Called in multiple places when an inode should be destroyed. | |
266 | */ | |
267 | void | |
268 | zfs_inode_destroy(struct inode *ip) | |
269 | { | |
270 | znode_t *zp = ITOZ(ip); | |
271 | zfs_sb_t *zsb = ZTOZSB(zp); | |
272 | ||
ebe7e575 BB |
273 | if (zfsctl_is_node(ip)) |
274 | zfsctl_inode_destroy(ip); | |
275 | ||
3558fd73 | 276 | mutex_enter(&zsb->z_znodes_lock); |
7b3e34ba BB |
277 | if (list_link_active(&zp->z_link_node)) { |
278 | list_remove(&zsb->z_all_znodes, zp); | |
279 | zsb->z_nr_znodes--; | |
280 | } | |
3558fd73 BB |
281 | mutex_exit(&zsb->z_znodes_lock); |
282 | ||
283 | if (zp->z_acl_cached) { | |
284 | zfs_acl_free(zp->z_acl_cached); | |
285 | zp->z_acl_cached = NULL; | |
286 | } | |
287 | ||
82a37189 BB |
288 | if (zp->z_xattr_cached) { |
289 | nvlist_free(zp->z_xattr_cached); | |
290 | zp->z_xattr_cached = NULL; | |
291 | } | |
292 | ||
e89260a1 BB |
293 | if (zp->z_xattr_parent) { |
294 | iput(ZTOI(zp->z_xattr_parent)); | |
295 | zp->z_xattr_parent = NULL; | |
296 | } | |
297 | ||
3558fd73 BB |
298 | kmem_cache_free(znode_cache, zp); |
299 | } | |
300 | ||
301 | static void | |
302 | zfs_inode_set_ops(zfs_sb_t *zsb, struct inode *ip) | |
303 | { | |
aa6d8c10 | 304 | uint64_t rdev = 0; |
3558fd73 BB |
305 | |
306 | switch (ip->i_mode & S_IFMT) { | |
307 | case S_IFREG: | |
308 | ip->i_op = &zpl_inode_operations; | |
309 | ip->i_fop = &zpl_file_operations; | |
310 | ip->i_mapping->a_ops = &zpl_address_space_operations; | |
311 | break; | |
312 | ||
313 | case S_IFDIR: | |
314 | ip->i_op = &zpl_dir_inode_operations; | |
315 | ip->i_fop = &zpl_dir_file_operations; | |
316 | ITOZ(ip)->z_zn_prefetch = B_TRUE; | |
317 | break; | |
318 | ||
319 | case S_IFLNK: | |
320 | ip->i_op = &zpl_symlink_inode_operations; | |
321 | break; | |
322 | ||
aa6d8c10 NB |
323 | /* |
324 | * rdev is only stored in a SA only for device files. | |
325 | */ | |
3558fd73 BB |
326 | case S_IFCHR: |
327 | case S_IFBLK: | |
3558fd73 BB |
328 | VERIFY(sa_lookup(ITOZ(ip)->z_sa_hdl, SA_ZPL_RDEV(zsb), |
329 | &rdev, sizeof (rdev)) == 0); | |
aa6d8c10 NB |
330 | /*FALLTHROUGH*/ |
331 | case S_IFIFO: | |
332 | case S_IFSOCK: | |
3558fd73 BB |
333 | init_special_inode(ip, ip->i_mode, rdev); |
334 | ip->i_op = &zpl_special_inode_operations; | |
335 | break; | |
336 | ||
337 | default: | |
338 | printk("ZFS: Invalid mode: 0x%x\n", ip->i_mode); | |
339 | VERIFY(0); | |
340 | } | |
341 | } | |
342 | ||
343 | /* | |
344 | * Construct a znode+inode and initialize. | |
34dc7c2f BB |
345 | * |
346 | * This does not do a call to dmu_set_user() that is | |
347 | * up to the caller to do, in case you don't want to | |
348 | * return the znode | |
349 | */ | |
350 | static znode_t * | |
3558fd73 | 351 | zfs_znode_alloc(zfs_sb_t *zsb, dmu_buf_t *db, int blksz, |
c85b224f | 352 | dmu_object_type_t obj_type, uint64_t obj, sa_handle_t *hdl, |
7b3e34ba | 353 | struct inode *dip) |
34dc7c2f BB |
354 | { |
355 | znode_t *zp; | |
3558fd73 | 356 | struct inode *ip; |
428870ff | 357 | uint64_t parent; |
428870ff BB |
358 | sa_bulk_attr_t bulk[9]; |
359 | int count = 0; | |
34dc7c2f | 360 | |
3558fd73 | 361 | ASSERT(zsb != NULL); |
34dc7c2f | 362 | |
3558fd73 BB |
363 | ip = new_inode(zsb->z_sb); |
364 | if (ip == NULL) | |
365 | return (NULL); | |
7304b6e5 | 366 | |
3558fd73 | 367 | zp = ITOZ(ip); |
34dc7c2f | 368 | ASSERT(zp->z_dirlocks == NULL); |
ebe7e575 BB |
369 | ASSERT3P(zp->z_acl_cached, ==, NULL); |
370 | ASSERT3P(zp->z_xattr_cached, ==, NULL); | |
e89260a1 | 371 | ASSERT3P(zp->z_xattr_parent, ==, NULL); |
572e2857 | 372 | zp->z_moved = 0; |
428870ff | 373 | zp->z_sa_hdl = NULL; |
34dc7c2f BB |
374 | zp->z_unlinked = 0; |
375 | zp->z_atime_dirty = 0; | |
376 | zp->z_mapcnt = 0; | |
34dc7c2f BB |
377 | zp->z_id = db->db_object; |
378 | zp->z_blksz = blksz; | |
379 | zp->z_seq = 0x7A4653; | |
380 | zp->z_sync_cnt = 0; | |
ebe7e575 BB |
381 | zp->z_is_zvol = B_FALSE; |
382 | zp->z_is_mapped = B_FALSE; | |
383 | zp->z_is_ctldir = B_FALSE; | |
7b3e34ba | 384 | zp->z_is_stale = B_FALSE; |
34dc7c2f | 385 | |
3558fd73 BB |
386 | zfs_znode_sa_init(zsb, zp, db, obj_type, hdl); |
387 | ||
388 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zsb), NULL, &zp->z_mode, 8); | |
389 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zsb), NULL, &zp->z_gen, 8); | |
390 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zsb), NULL, &zp->z_size, 8); | |
391 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_LINKS(zsb), NULL, &zp->z_links, 8); | |
392 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zsb), NULL, | |
428870ff | 393 | &zp->z_pflags, 8); |
3558fd73 | 394 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_PARENT(zsb), NULL, |
7304b6e5 | 395 | &parent, 8); |
3558fd73 | 396 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zsb), NULL, |
428870ff | 397 | &zp->z_atime, 16); |
3558fd73 BB |
398 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zsb), NULL, &zp->z_uid, 8); |
399 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zsb), NULL, &zp->z_gid, 8); | |
428870ff BB |
400 | |
401 | if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count) != 0 || zp->z_gen == 0) { | |
402 | if (hdl == NULL) | |
403 | sa_handle_destroy(zp->z_sa_hdl); | |
34dc7c2f | 404 | |
3558fd73 | 405 | goto error; |
34dc7c2f | 406 | } |
7304b6e5 | 407 | |
e89260a1 BB |
408 | /* |
409 | * xattr znodes hold a reference on their unique parent | |
410 | */ | |
411 | if (dip && zp->z_pflags & ZFS_XATTR) { | |
412 | igrab(dip); | |
413 | zp->z_xattr_parent = ITOZ(dip); | |
414 | } | |
415 | ||
3558fd73 | 416 | ip->i_ino = obj; |
5f35b190 | 417 | zfs_inode_update(zp); |
3558fd73 BB |
418 | zfs_inode_set_ops(zsb, ip); |
419 | ||
7b3e34ba BB |
420 | /* |
421 | * The only way insert_inode_locked() can fail is if the ip->i_ino | |
422 | * number is already hashed for this super block. This can never | |
423 | * happen because the inode numbers map 1:1 with the object numbers. | |
424 | * | |
425 | * The one exception is rolling back a mounted file system, but in | |
426 | * this case all the active inode are unhashed during the rollback. | |
427 | */ | |
428 | VERIFY3S(insert_inode_locked(ip), ==, 0); | |
c85b224f | 429 | |
3558fd73 BB |
430 | mutex_enter(&zsb->z_znodes_lock); |
431 | list_insert_tail(&zsb->z_all_znodes, zp); | |
ab26409d | 432 | zsb->z_nr_znodes++; |
b128c09f | 433 | membar_producer(); |
3558fd73 | 434 | mutex_exit(&zsb->z_znodes_lock); |
b128c09f | 435 | |
3558fd73 | 436 | unlock_new_inode(ip); |
34dc7c2f | 437 | return (zp); |
3558fd73 BB |
438 | |
439 | error: | |
440 | unlock_new_inode(ip); | |
441 | iput(ip); | |
442 | return NULL; | |
34dc7c2f BB |
443 | } |
444 | ||
960e08fe BB |
445 | /* |
446 | * Update the embedded inode given the znode. We should work toward | |
447 | * eliminating this function as soon as possible by removing values | |
448 | * which are duplicated between the znode and inode. If the generic | |
449 | * inode has the correct field it should be used, and the ZFS code | |
450 | * updated to access the inode. This can be done incrementally. | |
451 | */ | |
452 | void | |
453 | zfs_inode_update(znode_t *zp) | |
454 | { | |
3558fd73 BB |
455 | zfs_sb_t *zsb; |
456 | struct inode *ip; | |
960e08fe BB |
457 | uint32_t blksize; |
458 | uint64_t atime[2], mtime[2], ctime[2]; | |
459 | ||
460 | ASSERT(zp != NULL); | |
3558fd73 BB |
461 | zsb = ZTOZSB(zp); |
462 | ip = ZTOI(zp); | |
463 | ||
ebe7e575 BB |
464 | /* Skip .zfs control nodes which do not exist on disk. */ |
465 | if (zfsctl_is_node(ip)) | |
466 | return; | |
467 | ||
3558fd73 BB |
468 | sa_lookup(zp->z_sa_hdl, SA_ZPL_ATIME(zsb), &atime, 16); |
469 | sa_lookup(zp->z_sa_hdl, SA_ZPL_MTIME(zsb), &mtime, 16); | |
470 | sa_lookup(zp->z_sa_hdl, SA_ZPL_CTIME(zsb), &ctime, 16); | |
471 | ||
472 | spin_lock(&ip->i_lock); | |
473 | ip->i_generation = zp->z_gen; | |
474 | ip->i_uid = zp->z_uid; | |
475 | ip->i_gid = zp->z_gid; | |
28eb9213 | 476 | set_nlink(ip, zp->z_links); |
3558fd73 BB |
477 | ip->i_mode = zp->z_mode; |
478 | ip->i_blkbits = SPA_MINBLOCKSHIFT; | |
960e08fe | 479 | dmu_object_size_from_db(sa_get_db(zp->z_sa_hdl), &blksize, |
3558fd73 | 480 | (u_longlong_t *)&ip->i_blocks); |
960e08fe | 481 | |
3558fd73 BB |
482 | ZFS_TIME_DECODE(&ip->i_atime, atime); |
483 | ZFS_TIME_DECODE(&ip->i_mtime, mtime); | |
484 | ZFS_TIME_DECODE(&ip->i_ctime, ctime); | |
960e08fe | 485 | |
3558fd73 BB |
486 | i_size_write(ip, zp->z_size); |
487 | spin_unlock(&ip->i_lock); | |
960e08fe BB |
488 | } |
489 | ||
428870ff BB |
490 | static uint64_t empty_xattr; |
491 | static uint64_t pad[4]; | |
492 | static zfs_acl_phys_t acl_phys; | |
34dc7c2f BB |
493 | /* |
494 | * Create a new DMU object to hold a zfs znode. | |
495 | * | |
496 | * IN: dzp - parent directory for new znode | |
497 | * vap - file attributes for new znode | |
498 | * tx - dmu transaction id for zap operations | |
499 | * cr - credentials of caller | |
500 | * flag - flags: | |
501 | * IS_ROOT_NODE - new object will be root | |
502 | * IS_XATTR - new object is an attribute | |
34dc7c2f BB |
503 | * bonuslen - length of bonus buffer |
504 | * setaclp - File/Dir initial ACL | |
505 | * fuidp - Tracks fuid allocation. | |
506 | * | |
507 | * OUT: zpp - allocated znode | |
508 | * | |
509 | */ | |
510 | void | |
511 | zfs_mknode(znode_t *dzp, vattr_t *vap, dmu_tx_t *tx, cred_t *cr, | |
428870ff | 512 | uint_t flag, znode_t **zpp, zfs_acl_ids_t *acl_ids) |
34dc7c2f | 513 | { |
428870ff BB |
514 | uint64_t crtime[2], atime[2], mtime[2], ctime[2]; |
515 | uint64_t mode, size, links, parent, pflags; | |
572e2857 | 516 | uint64_t dzp_pflags = 0; |
428870ff | 517 | uint64_t rdev = 0; |
3558fd73 | 518 | zfs_sb_t *zsb = ZTOZSB(dzp); |
428870ff | 519 | dmu_buf_t *db; |
34dc7c2f BB |
520 | timestruc_t now; |
521 | uint64_t gen, obj; | |
522 | int err; | |
428870ff BB |
523 | int bonuslen; |
524 | sa_handle_t *sa_hdl; | |
525 | dmu_object_type_t obj_type; | |
f30484af | 526 | sa_bulk_attr_t *sa_attrs; |
428870ff BB |
527 | int cnt = 0; |
528 | zfs_acl_locator_cb_t locate = { 0 }; | |
34dc7c2f | 529 | |
3558fd73 | 530 | if (zsb->z_replay) { |
34dc7c2f | 531 | obj = vap->va_nodeid; |
34dc7c2f BB |
532 | now = vap->va_ctime; /* see zfs_replay_create() */ |
533 | gen = vap->va_nblocks; /* ditto */ | |
534 | } else { | |
535 | obj = 0; | |
536 | gethrestime(&now); | |
537 | gen = dmu_tx_get_txg(tx); | |
538 | } | |
539 | ||
3558fd73 | 540 | obj_type = zsb->z_use_sa ? DMU_OT_SA : DMU_OT_ZNODE; |
428870ff BB |
541 | bonuslen = (obj_type == DMU_OT_SA) ? |
542 | DN_MAX_BONUSLEN : ZFS_OLD_ZNODE_PHYS_SIZE; | |
543 | ||
34dc7c2f BB |
544 | /* |
545 | * Create a new DMU object. | |
546 | */ | |
547 | /* | |
548 | * There's currently no mechanism for pre-reading the blocks that will | |
572e2857 | 549 | * be needed to allocate a new object, so we accept the small chance |
34dc7c2f BB |
550 | * that there will be an i/o error and we will fail one of the |
551 | * assertions below. | |
552 | */ | |
3558fd73 BB |
553 | if (S_ISDIR(vap->va_mode)) { |
554 | if (zsb->z_replay) { | |
555 | err = zap_create_claim_norm(zsb->z_os, obj, | |
556 | zsb->z_norm, DMU_OT_DIRECTORY_CONTENTS, | |
428870ff | 557 | obj_type, bonuslen, tx); |
34dc7c2f BB |
558 | ASSERT3U(err, ==, 0); |
559 | } else { | |
3558fd73 BB |
560 | obj = zap_create_norm(zsb->z_os, |
561 | zsb->z_norm, DMU_OT_DIRECTORY_CONTENTS, | |
428870ff | 562 | obj_type, bonuslen, tx); |
34dc7c2f BB |
563 | } |
564 | } else { | |
3558fd73 BB |
565 | if (zsb->z_replay) { |
566 | err = dmu_object_claim(zsb->z_os, obj, | |
34dc7c2f | 567 | DMU_OT_PLAIN_FILE_CONTENTS, 0, |
428870ff | 568 | obj_type, bonuslen, tx); |
34dc7c2f BB |
569 | ASSERT3U(err, ==, 0); |
570 | } else { | |
3558fd73 | 571 | obj = dmu_object_alloc(zsb->z_os, |
34dc7c2f | 572 | DMU_OT_PLAIN_FILE_CONTENTS, 0, |
428870ff | 573 | obj_type, bonuslen, tx); |
34dc7c2f BB |
574 | } |
575 | } | |
34dc7c2f | 576 | |
3558fd73 BB |
577 | ZFS_OBJ_HOLD_ENTER(zsb, obj); |
578 | VERIFY(0 == sa_buf_hold(zsb->z_os, obj, NULL, &db)); | |
34dc7c2f BB |
579 | |
580 | /* | |
581 | * If this is the root, fix up the half-initialized parent pointer | |
582 | * to reference the just-allocated physical data area. | |
583 | */ | |
584 | if (flag & IS_ROOT_NODE) { | |
34dc7c2f | 585 | dzp->z_id = obj; |
428870ff BB |
586 | } else { |
587 | dzp_pflags = dzp->z_pflags; | |
34dc7c2f BB |
588 | } |
589 | ||
590 | /* | |
591 | * If parent is an xattr, so am I. | |
592 | */ | |
428870ff | 593 | if (dzp_pflags & ZFS_XATTR) { |
34dc7c2f | 594 | flag |= IS_XATTR; |
34dc7c2f BB |
595 | } |
596 | ||
3558fd73 | 597 | if (zsb->z_use_fuids) |
428870ff BB |
598 | pflags = ZFS_ARCHIVE | ZFS_AV_MODIFIED; |
599 | else | |
600 | pflags = 0; | |
34dc7c2f | 601 | |
3558fd73 | 602 | if (S_ISDIR(vap->va_mode)) { |
428870ff BB |
603 | size = 2; /* contents ("." and "..") */ |
604 | links = (flag & (IS_ROOT_NODE | IS_XATTR)) ? 2 : 1; | |
605 | } else { | |
606 | size = links = 0; | |
34dc7c2f BB |
607 | } |
608 | ||
aa6d8c10 | 609 | if (S_ISBLK(vap->va_mode) || S_ISCHR(vap->va_mode)) |
dc1d7665 | 610 | rdev = vap->va_rdev; |
428870ff BB |
611 | |
612 | parent = dzp->z_id; | |
613 | mode = acl_ids->z_mode; | |
34dc7c2f | 614 | if (flag & IS_XATTR) |
428870ff | 615 | pflags |= ZFS_XATTR; |
34dc7c2f | 616 | |
428870ff BB |
617 | /* |
618 | * No execs denied will be deterimed when zfs_mode_compute() is called. | |
619 | */ | |
620 | pflags |= acl_ids->z_aclp->z_hints & | |
621 | (ZFS_ACL_TRIVIAL|ZFS_INHERIT_ACE|ZFS_ACL_AUTO_INHERIT| | |
622 | ZFS_ACL_DEFAULTED|ZFS_ACL_PROTECTED); | |
34dc7c2f | 623 | |
428870ff BB |
624 | ZFS_TIME_ENCODE(&now, crtime); |
625 | ZFS_TIME_ENCODE(&now, ctime); | |
34dc7c2f | 626 | |
3558fd73 | 627 | if (vap->va_mask & ATTR_ATIME) { |
428870ff | 628 | ZFS_TIME_ENCODE(&vap->va_atime, atime); |
34dc7c2f | 629 | } else { |
428870ff | 630 | ZFS_TIME_ENCODE(&now, atime); |
34dc7c2f BB |
631 | } |
632 | ||
3558fd73 | 633 | if (vap->va_mask & ATTR_MTIME) { |
428870ff BB |
634 | ZFS_TIME_ENCODE(&vap->va_mtime, mtime); |
635 | } else { | |
636 | ZFS_TIME_ENCODE(&now, mtime); | |
637 | } | |
638 | ||
639 | /* Now add in all of the "SA" attributes */ | |
3558fd73 | 640 | VERIFY(0 == sa_handle_get_from_db(zsb->z_os, db, NULL, SA_HDL_SHARED, |
428870ff BB |
641 | &sa_hdl)); |
642 | ||
643 | /* | |
644 | * Setup the array of attributes to be replaced/set on the new file | |
645 | * | |
646 | * order for DMU_OT_ZNODE is critical since it needs to be constructed | |
647 | * in the old znode_phys_t format. Don't change this ordering | |
648 | */ | |
b8d06fca | 649 | sa_attrs = kmem_alloc(sizeof(sa_bulk_attr_t) * ZPL_END, KM_PUSHPAGE); |
428870ff BB |
650 | |
651 | if (obj_type == DMU_OT_ZNODE) { | |
3558fd73 | 652 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ATIME(zsb), |
428870ff | 653 | NULL, &atime, 16); |
3558fd73 | 654 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MTIME(zsb), |
428870ff | 655 | NULL, &mtime, 16); |
3558fd73 | 656 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CTIME(zsb), |
428870ff | 657 | NULL, &ctime, 16); |
3558fd73 | 658 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CRTIME(zsb), |
428870ff | 659 | NULL, &crtime, 16); |
3558fd73 | 660 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GEN(zsb), |
428870ff | 661 | NULL, &gen, 8); |
3558fd73 | 662 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MODE(zsb), |
428870ff | 663 | NULL, &mode, 8); |
3558fd73 | 664 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_SIZE(zsb), |
428870ff | 665 | NULL, &size, 8); |
3558fd73 | 666 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PARENT(zsb), |
428870ff | 667 | NULL, &parent, 8); |
34dc7c2f | 668 | } else { |
3558fd73 | 669 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MODE(zsb), |
428870ff | 670 | NULL, &mode, 8); |
3558fd73 | 671 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_SIZE(zsb), |
428870ff | 672 | NULL, &size, 8); |
3558fd73 | 673 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GEN(zsb), |
428870ff | 674 | NULL, &gen, 8); |
3558fd73 BB |
675 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_UID(zsb), |
676 | NULL, &acl_ids->z_fuid, 8); | |
677 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GID(zsb), | |
678 | NULL, &acl_ids->z_fgid, 8); | |
679 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PARENT(zsb), | |
428870ff | 680 | NULL, &parent, 8); |
3558fd73 | 681 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_FLAGS(zsb), |
428870ff | 682 | NULL, &pflags, 8); |
3558fd73 | 683 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ATIME(zsb), |
428870ff | 684 | NULL, &atime, 16); |
3558fd73 | 685 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MTIME(zsb), |
428870ff | 686 | NULL, &mtime, 16); |
3558fd73 | 687 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CTIME(zsb), |
428870ff | 688 | NULL, &ctime, 16); |
3558fd73 | 689 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CRTIME(zsb), |
428870ff BB |
690 | NULL, &crtime, 16); |
691 | } | |
692 | ||
3558fd73 | 693 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_LINKS(zsb), NULL, &links, 8); |
428870ff BB |
694 | |
695 | if (obj_type == DMU_OT_ZNODE) { | |
3558fd73 | 696 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_XATTR(zsb), NULL, |
428870ff | 697 | &empty_xattr, 8); |
34dc7c2f | 698 | } |
428870ff | 699 | if (obj_type == DMU_OT_ZNODE || |
aa6d8c10 | 700 | (S_ISBLK(vap->va_mode) || S_ISCHR(vap->va_mode))) { |
3558fd73 | 701 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_RDEV(zsb), |
428870ff | 702 | NULL, &rdev, 8); |
428870ff BB |
703 | } |
704 | if (obj_type == DMU_OT_ZNODE) { | |
3558fd73 | 705 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_FLAGS(zsb), |
428870ff | 706 | NULL, &pflags, 8); |
3558fd73 | 707 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_UID(zsb), NULL, |
428870ff | 708 | &acl_ids->z_fuid, 8); |
3558fd73 | 709 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GID(zsb), NULL, |
428870ff | 710 | &acl_ids->z_fgid, 8); |
3558fd73 | 711 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PAD(zsb), NULL, pad, |
428870ff | 712 | sizeof (uint64_t) * 4); |
3558fd73 | 713 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ZNODE_ACL(zsb), NULL, |
428870ff BB |
714 | &acl_phys, sizeof (zfs_acl_phys_t)); |
715 | } else if (acl_ids->z_aclp->z_version >= ZFS_ACL_VERSION_FUID) { | |
3558fd73 | 716 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_DACL_COUNT(zsb), NULL, |
428870ff BB |
717 | &acl_ids->z_aclp->z_acl_count, 8); |
718 | locate.cb_aclp = acl_ids->z_aclp; | |
3558fd73 | 719 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_DACL_ACES(zsb), |
428870ff BB |
720 | zfs_acl_data_locator, &locate, |
721 | acl_ids->z_aclp->z_acl_bytes); | |
722 | mode = zfs_mode_compute(mode, acl_ids->z_aclp, &pflags, | |
723 | acl_ids->z_fuid, acl_ids->z_fgid); | |
724 | } | |
725 | ||
726 | VERIFY(sa_replace_all_by_template(sa_hdl, sa_attrs, cnt, tx) == 0); | |
34dc7c2f | 727 | |
34dc7c2f | 728 | if (!(flag & IS_ROOT_NODE)) { |
c85b224f | 729 | *zpp = zfs_znode_alloc(zsb, db, 0, obj_type, obj, sa_hdl, |
7b3e34ba BB |
730 | ZTOI(dzp)); |
731 | VERIFY(*zpp != NULL); | |
732 | VERIFY(dzp != NULL); | |
34dc7c2f BB |
733 | } else { |
734 | /* | |
735 | * If we are creating the root node, the "parent" we | |
736 | * passed in is the znode for the root. | |
737 | */ | |
738 | *zpp = dzp; | |
428870ff BB |
739 | |
740 | (*zpp)->z_sa_hdl = sa_hdl; | |
34dc7c2f | 741 | } |
428870ff BB |
742 | |
743 | (*zpp)->z_pflags = pflags; | |
744 | (*zpp)->z_mode = mode; | |
745 | ||
428870ff BB |
746 | if (obj_type == DMU_OT_ZNODE || |
747 | acl_ids->z_aclp->z_version < ZFS_ACL_VERSION_FUID) { | |
748 | err = zfs_aclset_common(*zpp, acl_ids->z_aclp, cr, tx); | |
149e873a | 749 | ASSERT3S(err, ==, 0); |
428870ff | 750 | } |
f30484af | 751 | kmem_free(sa_attrs, sizeof(sa_bulk_attr_t) * ZPL_END); |
3558fd73 | 752 | ZFS_OBJ_HOLD_EXIT(zsb, obj); |
34dc7c2f BB |
753 | } |
754 | ||
5484965a BB |
755 | /* |
756 | * zfs_xvattr_set only updates the in-core attributes | |
757 | * it is assumed the caller will be doing an sa_bulk_update | |
758 | * to push the changes out | |
759 | */ | |
760 | void | |
761 | zfs_xvattr_set(znode_t *zp, xvattr_t *xvap, dmu_tx_t *tx) | |
762 | { | |
763 | xoptattr_t *xoap; | |
764 | ||
765 | xoap = xva_getxoptattr(xvap); | |
766 | ASSERT(xoap); | |
767 | ||
768 | if (XVA_ISSET_REQ(xvap, XAT_CREATETIME)) { | |
769 | uint64_t times[2]; | |
770 | ZFS_TIME_ENCODE(&xoap->xoa_createtime, times); | |
771 | (void) sa_update(zp->z_sa_hdl, SA_ZPL_CRTIME(ZTOZSB(zp)), | |
772 | ×, sizeof (times), tx); | |
773 | XVA_SET_RTN(xvap, XAT_CREATETIME); | |
774 | } | |
775 | if (XVA_ISSET_REQ(xvap, XAT_READONLY)) { | |
776 | ZFS_ATTR_SET(zp, ZFS_READONLY, xoap->xoa_readonly, | |
777 | zp->z_pflags, tx); | |
778 | XVA_SET_RTN(xvap, XAT_READONLY); | |
779 | } | |
780 | if (XVA_ISSET_REQ(xvap, XAT_HIDDEN)) { | |
781 | ZFS_ATTR_SET(zp, ZFS_HIDDEN, xoap->xoa_hidden, | |
782 | zp->z_pflags, tx); | |
783 | XVA_SET_RTN(xvap, XAT_HIDDEN); | |
784 | } | |
785 | if (XVA_ISSET_REQ(xvap, XAT_SYSTEM)) { | |
786 | ZFS_ATTR_SET(zp, ZFS_SYSTEM, xoap->xoa_system, | |
787 | zp->z_pflags, tx); | |
788 | XVA_SET_RTN(xvap, XAT_SYSTEM); | |
789 | } | |
790 | if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE)) { | |
791 | ZFS_ATTR_SET(zp, ZFS_ARCHIVE, xoap->xoa_archive, | |
792 | zp->z_pflags, tx); | |
793 | XVA_SET_RTN(xvap, XAT_ARCHIVE); | |
794 | } | |
795 | if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE)) { | |
796 | ZFS_ATTR_SET(zp, ZFS_IMMUTABLE, xoap->xoa_immutable, | |
797 | zp->z_pflags, tx); | |
798 | XVA_SET_RTN(xvap, XAT_IMMUTABLE); | |
799 | } | |
800 | if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK)) { | |
801 | ZFS_ATTR_SET(zp, ZFS_NOUNLINK, xoap->xoa_nounlink, | |
802 | zp->z_pflags, tx); | |
803 | XVA_SET_RTN(xvap, XAT_NOUNLINK); | |
804 | } | |
805 | if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY)) { | |
806 | ZFS_ATTR_SET(zp, ZFS_APPENDONLY, xoap->xoa_appendonly, | |
807 | zp->z_pflags, tx); | |
808 | XVA_SET_RTN(xvap, XAT_APPENDONLY); | |
809 | } | |
810 | if (XVA_ISSET_REQ(xvap, XAT_NODUMP)) { | |
811 | ZFS_ATTR_SET(zp, ZFS_NODUMP, xoap->xoa_nodump, | |
812 | zp->z_pflags, tx); | |
813 | XVA_SET_RTN(xvap, XAT_NODUMP); | |
814 | } | |
815 | if (XVA_ISSET_REQ(xvap, XAT_OPAQUE)) { | |
816 | ZFS_ATTR_SET(zp, ZFS_OPAQUE, xoap->xoa_opaque, | |
817 | zp->z_pflags, tx); | |
818 | XVA_SET_RTN(xvap, XAT_OPAQUE); | |
819 | } | |
820 | if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED)) { | |
821 | ZFS_ATTR_SET(zp, ZFS_AV_QUARANTINED, | |
822 | xoap->xoa_av_quarantined, zp->z_pflags, tx); | |
823 | XVA_SET_RTN(xvap, XAT_AV_QUARANTINED); | |
824 | } | |
825 | if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED)) { | |
826 | ZFS_ATTR_SET(zp, ZFS_AV_MODIFIED, xoap->xoa_av_modified, | |
827 | zp->z_pflags, tx); | |
828 | XVA_SET_RTN(xvap, XAT_AV_MODIFIED); | |
829 | } | |
830 | if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP)) { | |
831 | zfs_sa_set_scanstamp(zp, xvap, tx); | |
832 | XVA_SET_RTN(xvap, XAT_AV_SCANSTAMP); | |
833 | } | |
834 | if (XVA_ISSET_REQ(xvap, XAT_REPARSE)) { | |
835 | ZFS_ATTR_SET(zp, ZFS_REPARSE, xoap->xoa_reparse, | |
836 | zp->z_pflags, tx); | |
837 | XVA_SET_RTN(xvap, XAT_REPARSE); | |
838 | } | |
839 | if (XVA_ISSET_REQ(xvap, XAT_OFFLINE)) { | |
840 | ZFS_ATTR_SET(zp, ZFS_OFFLINE, xoap->xoa_offline, | |
841 | zp->z_pflags, tx); | |
842 | XVA_SET_RTN(xvap, XAT_OFFLINE); | |
843 | } | |
844 | if (XVA_ISSET_REQ(xvap, XAT_SPARSE)) { | |
845 | ZFS_ATTR_SET(zp, ZFS_SPARSE, xoap->xoa_sparse, | |
846 | zp->z_pflags, tx); | |
847 | XVA_SET_RTN(xvap, XAT_SPARSE); | |
848 | } | |
849 | } | |
850 | ||
34dc7c2f | 851 | int |
3558fd73 | 852 | zfs_zget(zfs_sb_t *zsb, uint64_t obj_num, znode_t **zpp) |
34dc7c2f BB |
853 | { |
854 | dmu_object_info_t doi; | |
855 | dmu_buf_t *db; | |
856 | znode_t *zp; | |
857 | int err; | |
428870ff | 858 | sa_handle_t *hdl; |
36df2843 | 859 | struct inode *ip; |
34dc7c2f BB |
860 | |
861 | *zpp = NULL; | |
862 | ||
36df2843 GB |
863 | again: |
864 | ip = ilookup(zsb->z_sb, obj_num); | |
865 | ||
3558fd73 | 866 | ZFS_OBJ_HOLD_ENTER(zsb, obj_num); |
34dc7c2f | 867 | |
3558fd73 | 868 | err = sa_buf_hold(zsb->z_os, obj_num, NULL, &db); |
34dc7c2f | 869 | if (err) { |
3558fd73 | 870 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
36df2843 | 871 | iput(ip); |
34dc7c2f BB |
872 | return (err); |
873 | } | |
874 | ||
875 | dmu_object_info_from_db(db, &doi); | |
428870ff BB |
876 | if (doi.doi_bonus_type != DMU_OT_SA && |
877 | (doi.doi_bonus_type != DMU_OT_ZNODE || | |
878 | (doi.doi_bonus_type == DMU_OT_ZNODE && | |
879 | doi.doi_bonus_size < sizeof (znode_phys_t)))) { | |
880 | sa_buf_rele(db, NULL); | |
3558fd73 | 881 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
36df2843 | 882 | iput(ip); |
34dc7c2f BB |
883 | return (EINVAL); |
884 | } | |
885 | ||
428870ff BB |
886 | hdl = dmu_buf_get_user(db); |
887 | if (hdl != NULL) { | |
36df2843 GB |
888 | if (ip == NULL) { |
889 | /* | |
890 | * ilookup returned NULL, which means | |
891 | * the znode is dying - but the SA handle isn't | |
892 | * quite dead yet, we need to drop any locks | |
893 | * we're holding, re-schedule the task and try again. | |
894 | */ | |
895 | sa_buf_rele(db, NULL); | |
896 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); | |
897 | ||
898 | schedule(); | |
899 | goto again; | |
900 | } | |
428870ff | 901 | |
36df2843 | 902 | zp = sa_get_userdata(hdl); |
34dc7c2f BB |
903 | |
904 | /* | |
428870ff BB |
905 | * Since "SA" does immediate eviction we |
906 | * should never find a sa handle that doesn't | |
907 | * know about the znode. | |
34dc7c2f | 908 | */ |
428870ff BB |
909 | |
910 | ASSERT3P(zp, !=, NULL); | |
911 | ||
912 | mutex_enter(&zp->z_lock); | |
34dc7c2f BB |
913 | ASSERT3U(zp->z_id, ==, obj_num); |
914 | if (zp->z_unlinked) { | |
915 | err = ENOENT; | |
916 | } else { | |
3558fd73 | 917 | igrab(ZTOI(zp)); |
34dc7c2f BB |
918 | *zpp = zp; |
919 | err = 0; | |
920 | } | |
428870ff | 921 | sa_buf_rele(db, NULL); |
34dc7c2f | 922 | mutex_exit(&zp->z_lock); |
3558fd73 | 923 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
36df2843 | 924 | iput(ip); |
34dc7c2f BB |
925 | return (err); |
926 | } | |
927 | ||
36df2843 GB |
928 | ASSERT3P(ip, ==, NULL); |
929 | ||
34dc7c2f | 930 | /* |
3558fd73 | 931 | * Not found create new znode/vnode but only if file exists. |
428870ff BB |
932 | * |
933 | * There is a small window where zfs_vget() could | |
934 | * find this object while a file create is still in | |
935 | * progress. This is checked for in zfs_znode_alloc() | |
936 | * | |
937 | * if zfs_znode_alloc() fails it will drop the hold on the | |
938 | * bonus buffer. | |
34dc7c2f | 939 | */ |
3558fd73 | 940 | zp = zfs_znode_alloc(zsb, db, doi.doi_data_block_size, |
7b3e34ba | 941 | doi.doi_bonus_type, obj_num, NULL, NULL); |
428870ff BB |
942 | if (zp == NULL) { |
943 | err = ENOENT; | |
944 | } else { | |
945 | *zpp = zp; | |
946 | } | |
3558fd73 | 947 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
428870ff | 948 | return (err); |
34dc7c2f BB |
949 | } |
950 | ||
951 | int | |
952 | zfs_rezget(znode_t *zp) | |
953 | { | |
3558fd73 | 954 | zfs_sb_t *zsb = ZTOZSB(zp); |
34dc7c2f BB |
955 | dmu_object_info_t doi; |
956 | dmu_buf_t *db; | |
957 | uint64_t obj_num = zp->z_id; | |
428870ff | 958 | uint64_t mode; |
428870ff | 959 | sa_bulk_attr_t bulk[8]; |
34dc7c2f | 960 | int err; |
428870ff BB |
961 | int count = 0; |
962 | uint64_t gen; | |
34dc7c2f | 963 | |
3558fd73 | 964 | ZFS_OBJ_HOLD_ENTER(zsb, obj_num); |
34dc7c2f | 965 | |
428870ff BB |
966 | mutex_enter(&zp->z_acl_lock); |
967 | if (zp->z_acl_cached) { | |
968 | zfs_acl_free(zp->z_acl_cached); | |
969 | zp->z_acl_cached = NULL; | |
970 | } | |
428870ff | 971 | mutex_exit(&zp->z_acl_lock); |
7b3e34ba BB |
972 | |
973 | rw_enter(&zp->z_xattr_lock, RW_WRITER); | |
974 | if (zp->z_xattr_cached) { | |
975 | nvlist_free(zp->z_xattr_cached); | |
976 | zp->z_xattr_cached = NULL; | |
977 | } | |
978 | ||
979 | if (zp->z_xattr_parent) { | |
980 | iput(ZTOI(zp->z_xattr_parent)); | |
981 | zp->z_xattr_parent = NULL; | |
982 | } | |
983 | rw_exit(&zp->z_xattr_lock); | |
984 | ||
428870ff | 985 | ASSERT(zp->z_sa_hdl == NULL); |
3558fd73 | 986 | err = sa_buf_hold(zsb->z_os, obj_num, NULL, &db); |
34dc7c2f | 987 | if (err) { |
3558fd73 | 988 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
34dc7c2f BB |
989 | return (err); |
990 | } | |
991 | ||
992 | dmu_object_info_from_db(db, &doi); | |
428870ff BB |
993 | if (doi.doi_bonus_type != DMU_OT_SA && |
994 | (doi.doi_bonus_type != DMU_OT_ZNODE || | |
995 | (doi.doi_bonus_type == DMU_OT_ZNODE && | |
996 | doi.doi_bonus_size < sizeof (znode_phys_t)))) { | |
997 | sa_buf_rele(db, NULL); | |
3558fd73 | 998 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
34dc7c2f BB |
999 | return (EINVAL); |
1000 | } | |
1001 | ||
3558fd73 | 1002 | zfs_znode_sa_init(zsb, zp, db, doi.doi_bonus_type, NULL); |
428870ff BB |
1003 | |
1004 | /* reload cached values */ | |
3558fd73 | 1005 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zsb), NULL, |
428870ff | 1006 | &gen, sizeof (gen)); |
3558fd73 | 1007 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zsb), NULL, |
428870ff | 1008 | &zp->z_size, sizeof (zp->z_size)); |
3558fd73 | 1009 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_LINKS(zsb), NULL, |
428870ff | 1010 | &zp->z_links, sizeof (zp->z_links)); |
3558fd73 | 1011 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zsb), NULL, |
428870ff | 1012 | &zp->z_pflags, sizeof (zp->z_pflags)); |
3558fd73 | 1013 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zsb), NULL, |
428870ff | 1014 | &zp->z_atime, sizeof (zp->z_atime)); |
3558fd73 | 1015 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zsb), NULL, |
572e2857 | 1016 | &zp->z_uid, sizeof (zp->z_uid)); |
3558fd73 | 1017 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zsb), NULL, |
572e2857 | 1018 | &zp->z_gid, sizeof (zp->z_gid)); |
3558fd73 | 1019 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zsb), NULL, |
428870ff BB |
1020 | &mode, sizeof (mode)); |
1021 | ||
428870ff BB |
1022 | if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count)) { |
1023 | zfs_znode_dmu_fini(zp); | |
3558fd73 | 1024 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
428870ff BB |
1025 | return (EIO); |
1026 | } | |
1027 | ||
572e2857 BB |
1028 | zp->z_mode = mode; |
1029 | ||
428870ff BB |
1030 | if (gen != zp->z_gen) { |
1031 | zfs_znode_dmu_fini(zp); | |
3558fd73 | 1032 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
34dc7c2f BB |
1033 | return (EIO); |
1034 | } | |
1035 | ||
428870ff | 1036 | zp->z_unlinked = (zp->z_links == 0); |
34dc7c2f | 1037 | zp->z_blksz = doi.doi_data_block_size; |
7b3e34ba | 1038 | zfs_inode_update(zp); |
34dc7c2f | 1039 | |
3558fd73 | 1040 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
34dc7c2f BB |
1041 | |
1042 | return (0); | |
1043 | } | |
1044 | ||
1045 | void | |
1046 | zfs_znode_delete(znode_t *zp, dmu_tx_t *tx) | |
1047 | { | |
3558fd73 BB |
1048 | zfs_sb_t *zsb = ZTOZSB(zp); |
1049 | objset_t *os = zsb->z_os; | |
34dc7c2f | 1050 | uint64_t obj = zp->z_id; |
572e2857 | 1051 | uint64_t acl_obj = zfs_external_acl(zp); |
34dc7c2f | 1052 | |
3558fd73 | 1053 | ZFS_OBJ_HOLD_ENTER(zsb, obj); |
572e2857 BB |
1054 | if (acl_obj) { |
1055 | VERIFY(!zp->z_is_sa); | |
b128c09f | 1056 | VERIFY(0 == dmu_object_free(os, acl_obj, tx)); |
572e2857 | 1057 | } |
b128c09f | 1058 | VERIFY(0 == dmu_object_free(os, obj, tx)); |
34dc7c2f | 1059 | zfs_znode_dmu_fini(zp); |
3558fd73 | 1060 | ZFS_OBJ_HOLD_EXIT(zsb, obj); |
34dc7c2f BB |
1061 | } |
1062 | ||
1063 | void | |
1064 | zfs_zinactive(znode_t *zp) | |
1065 | { | |
3558fd73 | 1066 | zfs_sb_t *zsb = ZTOZSB(zp); |
34dc7c2f | 1067 | uint64_t z_id = zp->z_id; |
d6bd8eaa | 1068 | boolean_t drop_mutex = 0; |
34dc7c2f | 1069 | |
428870ff | 1070 | ASSERT(zp->z_sa_hdl); |
34dc7c2f BB |
1071 | |
1072 | /* | |
d6bd8eaa BB |
1073 | * Don't allow a zfs_zget() while were trying to release this znode. |
1074 | * | |
1075 | * Linux allows direct memory reclaim which means that any KM_SLEEP | |
1076 | * allocation may trigger inode eviction. This can lead to a deadlock | |
1077 | * through the ->shrink_icache_memory()->evict()->zfs_inactive()-> | |
1078 | * zfs_zinactive() call path. To avoid this deadlock the process | |
1079 | * must not reacquire the mutex when it is already holding it. | |
34dc7c2f | 1080 | */ |
d6bd8eaa BB |
1081 | if (!ZFS_OBJ_HOLD_OWNED(zsb, z_id)) { |
1082 | ZFS_OBJ_HOLD_ENTER(zsb, z_id); | |
1083 | drop_mutex = 1; | |
1084 | } | |
1085 | ||
34dc7c2f | 1086 | mutex_enter(&zp->z_lock); |
34dc7c2f BB |
1087 | |
1088 | /* | |
1089 | * If this was the last reference to a file with no links, | |
1090 | * remove the file from the file system. | |
1091 | */ | |
1092 | if (zp->z_unlinked) { | |
1093 | mutex_exit(&zp->z_lock); | |
d6bd8eaa BB |
1094 | |
1095 | if (drop_mutex) | |
1096 | ZFS_OBJ_HOLD_EXIT(zsb, z_id); | |
1097 | ||
34dc7c2f BB |
1098 | zfs_rmnode(zp); |
1099 | return; | |
1100 | } | |
428870ff | 1101 | |
34dc7c2f BB |
1102 | mutex_exit(&zp->z_lock); |
1103 | zfs_znode_dmu_fini(zp); | |
d6bd8eaa BB |
1104 | |
1105 | if (drop_mutex) | |
1106 | ZFS_OBJ_HOLD_EXIT(zsb, z_id); | |
34dc7c2f BB |
1107 | } |
1108 | ||
1109 | void | |
428870ff BB |
1110 | zfs_tstamp_update_setup(znode_t *zp, uint_t flag, uint64_t mtime[2], |
1111 | uint64_t ctime[2], boolean_t have_tx) | |
34dc7c2f BB |
1112 | { |
1113 | timestruc_t now; | |
1114 | ||
34dc7c2f BB |
1115 | gethrestime(&now); |
1116 | ||
428870ff | 1117 | if (have_tx) { /* will sa_bulk_update happen really soon? */ |
34dc7c2f BB |
1118 | zp->z_atime_dirty = 0; |
1119 | zp->z_seq++; | |
1120 | } else { | |
1121 | zp->z_atime_dirty = 1; | |
1122 | } | |
1123 | ||
3558fd73 | 1124 | if (flag & ATTR_ATIME) { |
428870ff BB |
1125 | ZFS_TIME_ENCODE(&now, zp->z_atime); |
1126 | } | |
34dc7c2f | 1127 | |
3558fd73 | 1128 | if (flag & ATTR_MTIME) { |
428870ff | 1129 | ZFS_TIME_ENCODE(&now, mtime); |
3558fd73 | 1130 | if (ZTOZSB(zp)->z_use_fuids) { |
428870ff BB |
1131 | zp->z_pflags |= (ZFS_ARCHIVE | |
1132 | ZFS_AV_MODIFIED); | |
1133 | } | |
34dc7c2f BB |
1134 | } |
1135 | ||
3558fd73 | 1136 | if (flag & ATTR_CTIME) { |
428870ff | 1137 | ZFS_TIME_ENCODE(&now, ctime); |
3558fd73 | 1138 | if (ZTOZSB(zp)->z_use_fuids) |
428870ff | 1139 | zp->z_pflags |= ZFS_ARCHIVE; |
34dc7c2f BB |
1140 | } |
1141 | } | |
1142 | ||
34dc7c2f BB |
1143 | /* |
1144 | * Grow the block size for a file. | |
1145 | * | |
1146 | * IN: zp - znode of file to free data in. | |
1147 | * size - requested block size | |
1148 | * tx - open transaction. | |
1149 | * | |
1150 | * NOTE: this function assumes that the znode is write locked. | |
1151 | */ | |
1152 | void | |
1153 | zfs_grow_blocksize(znode_t *zp, uint64_t size, dmu_tx_t *tx) | |
1154 | { | |
1155 | int error; | |
1156 | u_longlong_t dummy; | |
1157 | ||
1158 | if (size <= zp->z_blksz) | |
1159 | return; | |
1160 | /* | |
1161 | * If the file size is already greater than the current blocksize, | |
1162 | * we will not grow. If there is more than one block in a file, | |
1163 | * the blocksize cannot change. | |
1164 | */ | |
428870ff | 1165 | if (zp->z_blksz && zp->z_size > zp->z_blksz) |
34dc7c2f BB |
1166 | return; |
1167 | ||
3558fd73 | 1168 | error = dmu_object_set_blocksize(ZTOZSB(zp)->z_os, zp->z_id, |
34dc7c2f | 1169 | size, 0, tx); |
428870ff | 1170 | |
34dc7c2f BB |
1171 | if (error == ENOTSUP) |
1172 | return; | |
1173 | ASSERT3U(error, ==, 0); | |
1174 | ||
1175 | /* What blocksize did we actually get? */ | |
428870ff | 1176 | dmu_object_size_from_db(sa_get_db(zp->z_sa_hdl), &zp->z_blksz, &dummy); |
34dc7c2f BB |
1177 | } |
1178 | ||
34dc7c2f | 1179 | /* |
b128c09f | 1180 | * Increase the file length |
34dc7c2f BB |
1181 | * |
1182 | * IN: zp - znode of file to free data in. | |
b128c09f | 1183 | * end - new end-of-file |
34dc7c2f BB |
1184 | * |
1185 | * RETURN: 0 if success | |
1186 | * error code if failure | |
1187 | */ | |
b128c09f BB |
1188 | static int |
1189 | zfs_extend(znode_t *zp, uint64_t end) | |
34dc7c2f | 1190 | { |
3558fd73 | 1191 | zfs_sb_t *zsb = ZTOZSB(zp); |
b128c09f | 1192 | dmu_tx_t *tx; |
34dc7c2f | 1193 | rl_t *rl; |
b128c09f | 1194 | uint64_t newblksz; |
34dc7c2f BB |
1195 | int error; |
1196 | ||
34dc7c2f | 1197 | /* |
b128c09f | 1198 | * We will change zp_size, lock the whole file. |
34dc7c2f | 1199 | */ |
b128c09f | 1200 | rl = zfs_range_lock(zp, 0, UINT64_MAX, RL_WRITER); |
34dc7c2f BB |
1201 | |
1202 | /* | |
1203 | * Nothing to do if file already at desired length. | |
1204 | */ | |
428870ff | 1205 | if (end <= zp->z_size) { |
34dc7c2f BB |
1206 | zfs_range_unlock(rl); |
1207 | return (0); | |
1208 | } | |
b128c09f | 1209 | top: |
3558fd73 | 1210 | tx = dmu_tx_create(zsb->z_os); |
428870ff BB |
1211 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); |
1212 | zfs_sa_upgrade_txholds(tx, zp); | |
b128c09f | 1213 | if (end > zp->z_blksz && |
3558fd73 | 1214 | (!ISP2(zp->z_blksz) || zp->z_blksz < zsb->z_max_blksz)) { |
34dc7c2f BB |
1215 | /* |
1216 | * We are growing the file past the current block size. | |
1217 | */ | |
3558fd73 | 1218 | if (zp->z_blksz > ZTOZSB(zp)->z_max_blksz) { |
34dc7c2f | 1219 | ASSERT(!ISP2(zp->z_blksz)); |
b128c09f | 1220 | newblksz = MIN(end, SPA_MAXBLOCKSIZE); |
34dc7c2f | 1221 | } else { |
3558fd73 | 1222 | newblksz = MIN(end, ZTOZSB(zp)->z_max_blksz); |
34dc7c2f | 1223 | } |
b128c09f BB |
1224 | dmu_tx_hold_write(tx, zp->z_id, 0, newblksz); |
1225 | } else { | |
1226 | newblksz = 0; | |
34dc7c2f BB |
1227 | } |
1228 | ||
fb5f0bc8 | 1229 | error = dmu_tx_assign(tx, TXG_NOWAIT); |
34dc7c2f | 1230 | if (error) { |
fb5f0bc8 | 1231 | if (error == ERESTART) { |
34dc7c2f | 1232 | dmu_tx_wait(tx); |
b128c09f BB |
1233 | dmu_tx_abort(tx); |
1234 | goto top; | |
1235 | } | |
34dc7c2f BB |
1236 | dmu_tx_abort(tx); |
1237 | zfs_range_unlock(rl); | |
1238 | return (error); | |
1239 | } | |
1240 | ||
b128c09f BB |
1241 | if (newblksz) |
1242 | zfs_grow_blocksize(zp, newblksz, tx); | |
34dc7c2f | 1243 | |
428870ff BB |
1244 | zp->z_size = end; |
1245 | ||
3558fd73 | 1246 | VERIFY(0 == sa_update(zp->z_sa_hdl, SA_ZPL_SIZE(ZTOZSB(zp)), |
428870ff | 1247 | &zp->z_size, sizeof (zp->z_size), tx)); |
34dc7c2f | 1248 | |
b128c09f | 1249 | zfs_range_unlock(rl); |
34dc7c2f | 1250 | |
b128c09f | 1251 | dmu_tx_commit(tx); |
34dc7c2f | 1252 | |
b128c09f BB |
1253 | return (0); |
1254 | } | |
1255 | ||
1256 | /* | |
1257 | * Free space in a file. | |
1258 | * | |
1259 | * IN: zp - znode of file to free data in. | |
1260 | * off - start of section to free. | |
1261 | * len - length of section to free. | |
1262 | * | |
3558fd73 | 1263 | * RETURN: 0 if success |
b128c09f BB |
1264 | * error code if failure |
1265 | */ | |
1266 | static int | |
1267 | zfs_free_range(znode_t *zp, uint64_t off, uint64_t len) | |
1268 | { | |
3558fd73 | 1269 | zfs_sb_t *zsb = ZTOZSB(zp); |
b128c09f BB |
1270 | rl_t *rl; |
1271 | int error; | |
1272 | ||
1273 | /* | |
1274 | * Lock the range being freed. | |
1275 | */ | |
1276 | rl = zfs_range_lock(zp, off, len, RL_WRITER); | |
1277 | ||
1278 | /* | |
1279 | * Nothing to do if file already at desired length. | |
1280 | */ | |
428870ff | 1281 | if (off >= zp->z_size) { |
b128c09f BB |
1282 | zfs_range_unlock(rl); |
1283 | return (0); | |
34dc7c2f BB |
1284 | } |
1285 | ||
428870ff BB |
1286 | if (off + len > zp->z_size) |
1287 | len = zp->z_size - off; | |
b128c09f | 1288 | |
3558fd73 | 1289 | error = dmu_free_long_range(zsb->z_os, zp->z_id, off, len); |
b128c09f | 1290 | |
34dc7c2f BB |
1291 | zfs_range_unlock(rl); |
1292 | ||
b128c09f BB |
1293 | return (error); |
1294 | } | |
1295 | ||
1296 | /* | |
1297 | * Truncate a file | |
1298 | * | |
1299 | * IN: zp - znode of file to free data in. | |
1300 | * end - new end-of-file. | |
1301 | * | |
3558fd73 | 1302 | * RETURN: 0 if success |
b128c09f BB |
1303 | * error code if failure |
1304 | */ | |
1305 | static int | |
1306 | zfs_trunc(znode_t *zp, uint64_t end) | |
1307 | { | |
3558fd73 | 1308 | zfs_sb_t *zsb = ZTOZSB(zp); |
b128c09f BB |
1309 | dmu_tx_t *tx; |
1310 | rl_t *rl; | |
1311 | int error; | |
572e2857 BB |
1312 | sa_bulk_attr_t bulk[2]; |
1313 | int count = 0; | |
b128c09f BB |
1314 | |
1315 | /* | |
1316 | * We will change zp_size, lock the whole file. | |
1317 | */ | |
1318 | rl = zfs_range_lock(zp, 0, UINT64_MAX, RL_WRITER); | |
1319 | ||
1320 | /* | |
1321 | * Nothing to do if file already at desired length. | |
1322 | */ | |
428870ff | 1323 | if (end >= zp->z_size) { |
b128c09f BB |
1324 | zfs_range_unlock(rl); |
1325 | return (0); | |
1326 | } | |
1327 | ||
3558fd73 | 1328 | error = dmu_free_long_range(zsb->z_os, zp->z_id, end, -1); |
b128c09f BB |
1329 | if (error) { |
1330 | zfs_range_unlock(rl); | |
1331 | return (error); | |
1332 | } | |
1333 | top: | |
3558fd73 | 1334 | tx = dmu_tx_create(zsb->z_os); |
428870ff BB |
1335 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); |
1336 | zfs_sa_upgrade_txholds(tx, zp); | |
fb5f0bc8 | 1337 | error = dmu_tx_assign(tx, TXG_NOWAIT); |
b128c09f | 1338 | if (error) { |
fb5f0bc8 | 1339 | if (error == ERESTART) { |
b128c09f BB |
1340 | dmu_tx_wait(tx); |
1341 | dmu_tx_abort(tx); | |
1342 | goto top; | |
1343 | } | |
1344 | dmu_tx_abort(tx); | |
1345 | zfs_range_unlock(rl); | |
1346 | return (error); | |
1347 | } | |
b128c09f | 1348 | |
428870ff | 1349 | zp->z_size = end; |
3558fd73 | 1350 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zsb), |
572e2857 | 1351 | NULL, &zp->z_size, sizeof (zp->z_size)); |
428870ff | 1352 | |
572e2857 BB |
1353 | if (end == 0) { |
1354 | zp->z_pflags &= ~ZFS_SPARSE; | |
3558fd73 | 1355 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zsb), |
572e2857 BB |
1356 | NULL, &zp->z_pflags, 8); |
1357 | } | |
1358 | VERIFY(sa_bulk_update(zp->z_sa_hdl, bulk, count, tx) == 0); | |
b128c09f | 1359 | |
34dc7c2f BB |
1360 | dmu_tx_commit(tx); |
1361 | ||
d164b209 | 1362 | zfs_range_unlock(rl); |
34dc7c2f BB |
1363 | |
1364 | return (0); | |
1365 | } | |
1366 | ||
b128c09f BB |
1367 | /* |
1368 | * Free space in a file | |
1369 | * | |
1370 | * IN: zp - znode of file to free data in. | |
1371 | * off - start of range | |
1372 | * len - end of range (0 => EOF) | |
1373 | * flag - current file open mode flags. | |
1374 | * log - TRUE if this action should be logged | |
1375 | * | |
3558fd73 | 1376 | * RETURN: 0 if success |
b128c09f BB |
1377 | * error code if failure |
1378 | */ | |
1379 | int | |
1380 | zfs_freesp(znode_t *zp, uint64_t off, uint64_t len, int flag, boolean_t log) | |
1381 | { | |
3558fd73 | 1382 | struct inode *ip = ZTOI(zp); |
b128c09f | 1383 | dmu_tx_t *tx; |
3558fd73 BB |
1384 | zfs_sb_t *zsb = ZTOZSB(zp); |
1385 | zilog_t *zilog = zsb->z_log; | |
428870ff BB |
1386 | uint64_t mode; |
1387 | uint64_t mtime[2], ctime[2]; | |
1388 | sa_bulk_attr_t bulk[3]; | |
1389 | int count = 0; | |
b128c09f BB |
1390 | int error; |
1391 | ||
3558fd73 | 1392 | if ((error = sa_lookup(zp->z_sa_hdl, SA_ZPL_MODE(zsb), &mode, |
428870ff BB |
1393 | sizeof (mode))) != 0) |
1394 | return (error); | |
1395 | ||
1396 | if (off > zp->z_size) { | |
b128c09f BB |
1397 | error = zfs_extend(zp, off+len); |
1398 | if (error == 0 && log) | |
1399 | goto log; | |
1400 | else | |
1401 | return (error); | |
1402 | } | |
1403 | ||
1404 | /* | |
1405 | * Check for any locks in the region to be freed. | |
1406 | */ | |
a89c3e0b | 1407 | if (ip->i_flock && mandatory_lock(ip)) { |
428870ff | 1408 | uint64_t length = (len ? len : zp->z_size - off); |
a89c3e0b RP |
1409 | if (!lock_may_write(ip, off, length)) |
1410 | return (EAGAIN); | |
b128c09f BB |
1411 | } |
1412 | ||
1413 | if (len == 0) { | |
1414 | error = zfs_trunc(zp, off); | |
1415 | } else { | |
1416 | if ((error = zfs_free_range(zp, off, len)) == 0 && | |
428870ff | 1417 | off + len > zp->z_size) |
b128c09f BB |
1418 | error = zfs_extend(zp, off+len); |
1419 | } | |
1420 | if (error || !log) | |
1421 | return (error); | |
1422 | log: | |
3558fd73 | 1423 | tx = dmu_tx_create(zsb->z_os); |
428870ff BB |
1424 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); |
1425 | zfs_sa_upgrade_txholds(tx, zp); | |
fb5f0bc8 | 1426 | error = dmu_tx_assign(tx, TXG_NOWAIT); |
b128c09f | 1427 | if (error) { |
fb5f0bc8 | 1428 | if (error == ERESTART) { |
b128c09f BB |
1429 | dmu_tx_wait(tx); |
1430 | dmu_tx_abort(tx); | |
1431 | goto log; | |
1432 | } | |
1433 | dmu_tx_abort(tx); | |
1434 | return (error); | |
1435 | } | |
1436 | ||
3558fd73 BB |
1437 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zsb), NULL, mtime, 16); |
1438 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zsb), NULL, ctime, 16); | |
1439 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zsb), | |
428870ff BB |
1440 | NULL, &zp->z_pflags, 8); |
1441 | zfs_tstamp_update_setup(zp, CONTENT_MODIFIED, mtime, ctime, B_TRUE); | |
1442 | error = sa_bulk_update(zp->z_sa_hdl, bulk, count, tx); | |
1443 | ASSERT(error == 0); | |
1444 | ||
b128c09f BB |
1445 | zfs_log_truncate(zilog, tx, TX_TRUNCATE, zp, off, len); |
1446 | ||
1447 | dmu_tx_commit(tx); | |
960e08fe | 1448 | zfs_inode_update(zp); |
b128c09f BB |
1449 | return (0); |
1450 | } | |
1451 | ||
34dc7c2f BB |
1452 | void |
1453 | zfs_create_fs(objset_t *os, cred_t *cr, nvlist_t *zplprops, dmu_tx_t *tx) | |
1454 | { | |
22872ff5 BB |
1455 | struct super_block *sb; |
1456 | zfs_sb_t *zsb; | |
428870ff | 1457 | uint64_t moid, obj, sa_obj, version; |
22872ff5 | 1458 | uint64_t sense = ZFS_CASE_SENSITIVE; |
34dc7c2f BB |
1459 | uint64_t norm = 0; |
1460 | nvpair_t *elem; | |
1461 | int error; | |
22872ff5 BB |
1462 | int i; |
1463 | znode_t *rootzp = NULL; | |
1464 | vattr_t vattr; | |
1465 | znode_t *zp; | |
1466 | zfs_acl_ids_t acl_ids; | |
34dc7c2f BB |
1467 | |
1468 | /* | |
1469 | * First attempt to create master node. | |
1470 | */ | |
1471 | /* | |
1472 | * In an empty objset, there are no blocks to read and thus | |
1473 | * there can be no i/o errors (which we assert below). | |
1474 | */ | |
1475 | moid = MASTER_NODE_OBJ; | |
1476 | error = zap_create_claim(os, moid, DMU_OT_MASTER_NODE, | |
1477 | DMU_OT_NONE, 0, tx); | |
1478 | ASSERT(error == 0); | |
1479 | ||
1480 | /* | |
1481 | * Set starting attributes. | |
1482 | */ | |
428870ff | 1483 | version = zfs_zpl_version_map(spa_version(dmu_objset_spa(os))); |
34dc7c2f BB |
1484 | elem = NULL; |
1485 | while ((elem = nvlist_next_nvpair(zplprops, elem)) != NULL) { | |
1486 | /* For the moment we expect all zpl props to be uint64_ts */ | |
1487 | uint64_t val; | |
1488 | char *name; | |
1489 | ||
1490 | ASSERT(nvpair_type(elem) == DATA_TYPE_UINT64); | |
1491 | VERIFY(nvpair_value_uint64(elem, &val) == 0); | |
1492 | name = nvpair_name(elem); | |
1493 | if (strcmp(name, zfs_prop_to_name(ZFS_PROP_VERSION)) == 0) { | |
9babb374 BB |
1494 | if (val < version) |
1495 | version = val; | |
34dc7c2f BB |
1496 | } else { |
1497 | error = zap_update(os, moid, name, 8, 1, &val, tx); | |
1498 | } | |
1499 | ASSERT(error == 0); | |
1500 | if (strcmp(name, zfs_prop_to_name(ZFS_PROP_NORMALIZE)) == 0) | |
1501 | norm = val; | |
22872ff5 BB |
1502 | else if (strcmp(name, zfs_prop_to_name(ZFS_PROP_CASE)) == 0) |
1503 | sense = val; | |
34dc7c2f BB |
1504 | } |
1505 | ASSERT(version != 0); | |
9babb374 | 1506 | error = zap_update(os, moid, ZPL_VERSION_STR, 8, 1, &version, tx); |
34dc7c2f | 1507 | |
428870ff BB |
1508 | /* |
1509 | * Create zap object used for SA attribute registration | |
1510 | */ | |
1511 | ||
1512 | if (version >= ZPL_VERSION_SA) { | |
1513 | sa_obj = zap_create(os, DMU_OT_SA_MASTER_NODE, | |
1514 | DMU_OT_NONE, 0, tx); | |
1515 | error = zap_add(os, moid, ZFS_SA_ATTRS, 8, 1, &sa_obj, tx); | |
1516 | ASSERT(error == 0); | |
1517 | } else { | |
1518 | sa_obj = 0; | |
1519 | } | |
34dc7c2f BB |
1520 | /* |
1521 | * Create a delete queue. | |
1522 | */ | |
9babb374 | 1523 | obj = zap_create(os, DMU_OT_UNLINKED_SET, DMU_OT_NONE, 0, tx); |
34dc7c2f | 1524 | |
9babb374 | 1525 | error = zap_add(os, moid, ZFS_UNLINKED_SET, 8, 1, &obj, tx); |
34dc7c2f BB |
1526 | ASSERT(error == 0); |
1527 | ||
9babb374 | 1528 | /* |
22872ff5 BB |
1529 | * Create root znode. Create minimal znode/inode/zsb/sb |
1530 | * to allow zfs_mknode to work. | |
9babb374 | 1531 | */ |
22872ff5 BB |
1532 | vattr.va_mask = ATTR_MODE|ATTR_UID|ATTR_GID; |
1533 | vattr.va_mode = S_IFDIR|0755; | |
1534 | vattr.va_uid = crgetuid(cr); | |
1535 | vattr.va_gid = crgetgid(cr); | |
1536 | ||
b8d06fca | 1537 | rootzp = kmem_cache_alloc(znode_cache, KM_PUSHPAGE); |
22872ff5 BB |
1538 | rootzp->z_moved = 0; |
1539 | rootzp->z_unlinked = 0; | |
1540 | rootzp->z_atime_dirty = 0; | |
1541 | rootzp->z_is_sa = USE_SA(version, os); | |
1542 | ||
004324ec | 1543 | zsb = kmem_zalloc(sizeof (zfs_sb_t), KM_PUSHPAGE | KM_NODEBUG); |
22872ff5 BB |
1544 | zsb->z_os = os; |
1545 | zsb->z_parent = zsb; | |
1546 | zsb->z_version = version; | |
1547 | zsb->z_use_fuids = USE_FUIDS(version, os); | |
1548 | zsb->z_use_sa = USE_SA(version, os); | |
1549 | zsb->z_norm = norm; | |
1550 | ||
b8d06fca | 1551 | sb = kmem_zalloc(sizeof (struct super_block), KM_PUSHPAGE); |
22872ff5 BB |
1552 | sb->s_fs_info = zsb; |
1553 | ||
1554 | ZTOI(rootzp)->i_sb = sb; | |
1555 | ||
1556 | error = sa_setup(os, sa_obj, zfs_attr_table, ZPL_END, | |
1557 | &zsb->z_attr_table); | |
9babb374 | 1558 | |
22872ff5 | 1559 | ASSERT(error == 0); |
9babb374 | 1560 | |
60101509 | 1561 | /* |
22872ff5 BB |
1562 | * Fold case on file systems that are always or sometimes case |
1563 | * insensitive. | |
60101509 | 1564 | */ |
22872ff5 BB |
1565 | if (sense == ZFS_CASE_INSENSITIVE || sense == ZFS_CASE_MIXED) |
1566 | zsb->z_norm |= U8_TEXTPREP_TOUPPER; | |
60101509 | 1567 | |
22872ff5 BB |
1568 | mutex_init(&zsb->z_znodes_lock, NULL, MUTEX_DEFAULT, NULL); |
1569 | list_create(&zsb->z_all_znodes, sizeof (znode_t), | |
1570 | offsetof(znode_t, z_link_node)); | |
60101509 | 1571 | |
22872ff5 BB |
1572 | for (i = 0; i != ZFS_OBJ_MTX_SZ; i++) |
1573 | mutex_init(&zsb->z_hold_mtx[i], NULL, MUTEX_DEFAULT, NULL); | |
60101509 | 1574 | |
22872ff5 BB |
1575 | VERIFY(0 == zfs_acl_ids_create(rootzp, IS_ROOT_NODE, &vattr, |
1576 | cr, NULL, &acl_ids)); | |
1577 | zfs_mknode(rootzp, &vattr, tx, cr, IS_ROOT_NODE, &zp, &acl_ids); | |
1578 | ASSERT3P(zp, ==, rootzp); | |
1579 | error = zap_add(os, moid, ZFS_ROOT_OBJ, 8, 1, &rootzp->z_id, tx); | |
1580 | ASSERT(error == 0); | |
1581 | zfs_acl_ids_free(&acl_ids); | |
60101509 | 1582 | |
22872ff5 BB |
1583 | atomic_set(&ZTOI(rootzp)->i_count, 0); |
1584 | sa_handle_destroy(rootzp->z_sa_hdl); | |
22872ff5 BB |
1585 | kmem_cache_free(znode_cache, rootzp); |
1586 | ||
1587 | /* | |
1588 | * Create shares directory | |
1589 | */ | |
22872ff5 | 1590 | error = zfs_create_share_dir(zsb, tx); |
9babb374 | 1591 | ASSERT(error == 0); |
428870ff | 1592 | |
22872ff5 BB |
1593 | for (i = 0; i != ZFS_OBJ_MTX_SZ; i++) |
1594 | mutex_destroy(&zsb->z_hold_mtx[i]); | |
2708f716 BB |
1595 | |
1596 | kmem_free(sb, sizeof (struct super_block)); | |
1597 | kmem_free(zsb, sizeof (zfs_sb_t)); | |
34dc7c2f | 1598 | } |
34dc7c2f | 1599 | #endif /* _KERNEL */ |
428870ff | 1600 | |
34dc7c2f | 1601 | static int |
572e2857 BB |
1602 | zfs_sa_setup(objset_t *osp, sa_attr_type_t **sa_table) |
1603 | { | |
1604 | uint64_t sa_obj = 0; | |
1605 | int error; | |
1606 | ||
1607 | error = zap_lookup(osp, MASTER_NODE_OBJ, ZFS_SA_ATTRS, 8, 1, &sa_obj); | |
1608 | if (error != 0 && error != ENOENT) | |
1609 | return (error); | |
1610 | ||
1611 | error = sa_setup(osp, sa_obj, zfs_attr_table, ZPL_END, sa_table); | |
1612 | return (error); | |
1613 | } | |
1614 | ||
1615 | static int | |
1616 | zfs_grab_sa_handle(objset_t *osp, uint64_t obj, sa_handle_t **hdlp, | |
7b8518cb | 1617 | dmu_buf_t **db, void *tag) |
34dc7c2f | 1618 | { |
34dc7c2f | 1619 | dmu_object_info_t doi; |
34dc7c2f | 1620 | int error; |
428870ff | 1621 | |
7b8518cb | 1622 | if ((error = sa_buf_hold(osp, obj, tag, db)) != 0) |
34dc7c2f BB |
1623 | return (error); |
1624 | ||
572e2857 | 1625 | dmu_object_info_from_db(*db, &doi); |
428870ff BB |
1626 | if ((doi.doi_bonus_type != DMU_OT_SA && |
1627 | doi.doi_bonus_type != DMU_OT_ZNODE) || | |
d6320ddb BB |
1628 | (doi.doi_bonus_type == DMU_OT_ZNODE && |
1629 | doi.doi_bonus_size < sizeof (znode_phys_t))) { | |
7b8518cb | 1630 | sa_buf_rele(*db, tag); |
572e2857 | 1631 | return (ENOTSUP); |
34dc7c2f BB |
1632 | } |
1633 | ||
572e2857 BB |
1634 | error = sa_handle_get(osp, obj, NULL, SA_HDL_PRIVATE, hdlp); |
1635 | if (error != 0) { | |
7b8518cb | 1636 | sa_buf_rele(*db, tag); |
428870ff BB |
1637 | return (error); |
1638 | } | |
1639 | ||
572e2857 BB |
1640 | return (0); |
1641 | } | |
1642 | ||
1643 | void | |
7b8518cb | 1644 | zfs_release_sa_handle(sa_handle_t *hdl, dmu_buf_t *db, void *tag) |
572e2857 BB |
1645 | { |
1646 | sa_handle_destroy(hdl); | |
7b8518cb | 1647 | sa_buf_rele(db, tag); |
572e2857 BB |
1648 | } |
1649 | ||
1650 | /* | |
1651 | * Given an object number, return its parent object number and whether | |
1652 | * or not the object is an extended attribute directory. | |
1653 | */ | |
1654 | static int | |
1655 | zfs_obj_to_pobj(sa_handle_t *hdl, sa_attr_type_t *sa_table, uint64_t *pobjp, | |
1656 | int *is_xattrdir) | |
1657 | { | |
1658 | uint64_t parent; | |
1659 | uint64_t pflags; | |
1660 | uint64_t mode; | |
1661 | sa_bulk_attr_t bulk[3]; | |
1662 | int count = 0; | |
1663 | int error; | |
1664 | ||
1665 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_PARENT], NULL, | |
1666 | &parent, sizeof (parent)); | |
428870ff | 1667 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_FLAGS], NULL, |
572e2857 | 1668 | &pflags, sizeof (pflags)); |
428870ff | 1669 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_MODE], NULL, |
572e2857 | 1670 | &mode, sizeof (mode)); |
428870ff | 1671 | |
572e2857 | 1672 | if ((error = sa_bulk_lookup(hdl, bulk, count)) != 0) |
428870ff | 1673 | return (error); |
572e2857 | 1674 | |
428870ff BB |
1675 | *pobjp = parent; |
1676 | *is_xattrdir = ((pflags & ZFS_XATTR) != 0) && S_ISDIR(mode); | |
34dc7c2f BB |
1677 | |
1678 | return (0); | |
1679 | } | |
1680 | ||
572e2857 BB |
1681 | /* |
1682 | * Given an object number, return some zpl level statistics | |
1683 | */ | |
1684 | static int | |
1685 | zfs_obj_to_stats_impl(sa_handle_t *hdl, sa_attr_type_t *sa_table, | |
1686 | zfs_stat_t *sb) | |
34dc7c2f | 1687 | { |
572e2857 BB |
1688 | sa_bulk_attr_t bulk[4]; |
1689 | int count = 0; | |
1690 | ||
1691 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_MODE], NULL, | |
1692 | &sb->zs_mode, sizeof (sb->zs_mode)); | |
1693 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_GEN], NULL, | |
1694 | &sb->zs_gen, sizeof (sb->zs_gen)); | |
1695 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_LINKS], NULL, | |
1696 | &sb->zs_links, sizeof (sb->zs_links)); | |
1697 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_CTIME], NULL, | |
1698 | &sb->zs_ctime, sizeof (sb->zs_ctime)); | |
1699 | ||
1700 | return (sa_bulk_lookup(hdl, bulk, count)); | |
1701 | } | |
1702 | ||
1703 | static int | |
1704 | zfs_obj_to_path_impl(objset_t *osp, uint64_t obj, sa_handle_t *hdl, | |
1705 | sa_attr_type_t *sa_table, char *buf, int len) | |
1706 | { | |
1707 | sa_handle_t *sa_hdl; | |
1708 | sa_handle_t *prevhdl = NULL; | |
1709 | dmu_buf_t *prevdb = NULL; | |
1710 | dmu_buf_t *sa_db = NULL; | |
34dc7c2f BB |
1711 | char *path = buf + len - 1; |
1712 | int error; | |
1713 | ||
1714 | *path = '\0'; | |
572e2857 | 1715 | sa_hdl = hdl; |
428870ff | 1716 | |
34dc7c2f BB |
1717 | for (;;) { |
1718 | uint64_t pobj; | |
1719 | char component[MAXNAMELEN + 2]; | |
1720 | size_t complen; | |
1721 | int is_xattrdir; | |
1722 | ||
572e2857 | 1723 | if (prevdb) |
7b8518cb | 1724 | zfs_release_sa_handle(prevhdl, prevdb, FTAG); |
572e2857 BB |
1725 | |
1726 | if ((error = zfs_obj_to_pobj(sa_hdl, sa_table, &pobj, | |
1727 | &is_xattrdir)) != 0) | |
34dc7c2f BB |
1728 | break; |
1729 | ||
1730 | if (pobj == obj) { | |
1731 | if (path[0] != '/') | |
1732 | *--path = '/'; | |
1733 | break; | |
1734 | } | |
1735 | ||
1736 | component[0] = '/'; | |
1737 | if (is_xattrdir) { | |
1738 | (void) sprintf(component + 1, "<xattrdir>"); | |
1739 | } else { | |
1740 | error = zap_value_search(osp, pobj, obj, | |
1741 | ZFS_DIRENT_OBJ(-1ULL), component + 1); | |
1742 | if (error != 0) | |
1743 | break; | |
1744 | } | |
1745 | ||
1746 | complen = strlen(component); | |
1747 | path -= complen; | |
1748 | ASSERT(path >= buf); | |
1749 | bcopy(component, path, complen); | |
1750 | obj = pobj; | |
572e2857 BB |
1751 | |
1752 | if (sa_hdl != hdl) { | |
1753 | prevhdl = sa_hdl; | |
1754 | prevdb = sa_db; | |
1755 | } | |
7b8518cb | 1756 | error = zfs_grab_sa_handle(osp, obj, &sa_hdl, &sa_db, FTAG); |
572e2857 BB |
1757 | if (error != 0) { |
1758 | sa_hdl = prevhdl; | |
1759 | sa_db = prevdb; | |
1760 | break; | |
1761 | } | |
1762 | } | |
1763 | ||
1764 | if (sa_hdl != NULL && sa_hdl != hdl) { | |
1765 | ASSERT(sa_db != NULL); | |
7b8518cb | 1766 | zfs_release_sa_handle(sa_hdl, sa_db, FTAG); |
34dc7c2f BB |
1767 | } |
1768 | ||
1769 | if (error == 0) | |
1770 | (void) memmove(buf, path, buf + len - path); | |
428870ff | 1771 | |
34dc7c2f BB |
1772 | return (error); |
1773 | } | |
572e2857 BB |
1774 | |
1775 | int | |
1776 | zfs_obj_to_path(objset_t *osp, uint64_t obj, char *buf, int len) | |
1777 | { | |
1778 | sa_attr_type_t *sa_table; | |
1779 | sa_handle_t *hdl; | |
1780 | dmu_buf_t *db; | |
1781 | int error; | |
1782 | ||
1783 | error = zfs_sa_setup(osp, &sa_table); | |
1784 | if (error != 0) | |
1785 | return (error); | |
1786 | ||
7b8518cb | 1787 | error = zfs_grab_sa_handle(osp, obj, &hdl, &db, FTAG); |
572e2857 BB |
1788 | if (error != 0) |
1789 | return (error); | |
1790 | ||
1791 | error = zfs_obj_to_path_impl(osp, obj, hdl, sa_table, buf, len); | |
1792 | ||
7b8518cb | 1793 | zfs_release_sa_handle(hdl, db, FTAG); |
572e2857 BB |
1794 | return (error); |
1795 | } | |
1796 | ||
1797 | int | |
1798 | zfs_obj_to_stats(objset_t *osp, uint64_t obj, zfs_stat_t *sb, | |
1799 | char *buf, int len) | |
1800 | { | |
1801 | char *path = buf + len - 1; | |
1802 | sa_attr_type_t *sa_table; | |
1803 | sa_handle_t *hdl; | |
1804 | dmu_buf_t *db; | |
1805 | int error; | |
1806 | ||
1807 | *path = '\0'; | |
1808 | ||
1809 | error = zfs_sa_setup(osp, &sa_table); | |
1810 | if (error != 0) | |
1811 | return (error); | |
1812 | ||
7b8518cb | 1813 | error = zfs_grab_sa_handle(osp, obj, &hdl, &db, FTAG); |
572e2857 BB |
1814 | if (error != 0) |
1815 | return (error); | |
1816 | ||
1817 | error = zfs_obj_to_stats_impl(hdl, sa_table, sb); | |
1818 | if (error != 0) { | |
7b8518cb | 1819 | zfs_release_sa_handle(hdl, db, FTAG); |
572e2857 BB |
1820 | return (error); |
1821 | } | |
1822 | ||
1823 | error = zfs_obj_to_path_impl(osp, obj, hdl, sa_table, buf, len); | |
1824 | ||
7b8518cb | 1825 | zfs_release_sa_handle(hdl, db, FTAG); |
572e2857 BB |
1826 | return (error); |
1827 | } | |
c28b2279 BB |
1828 | |
1829 | #if defined(_KERNEL) && defined(HAVE_SPL) | |
1830 | EXPORT_SYMBOL(zfs_create_fs); | |
1831 | EXPORT_SYMBOL(zfs_obj_to_path); | |
1832 | #endif |