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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. |
2e528b49 | 23 | * Copyright (c) 2013 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> | |
32 | #include <sys/systm.h> | |
33 | #include <sys/sysmacros.h> | |
34 | #include <sys/resource.h> | |
35 | #include <sys/mntent.h> | |
36 | #include <sys/mkdev.h> | |
37 | #include <sys/u8_textprep.h> | |
38 | #include <sys/dsl_dataset.h> | |
39 | #include <sys/vfs.h> | |
40 | #include <sys/vfs_opreg.h> | |
41 | #include <sys/vnode.h> | |
42 | #include <sys/file.h> | |
43 | #include <sys/kmem.h> | |
44 | #include <sys/errno.h> | |
45 | #include <sys/unistd.h> | |
46 | #include <sys/mode.h> | |
47 | #include <sys/atomic.h> | |
48 | #include <vm/pvn.h> | |
49 | #include "fs/fs_subr.h" | |
50 | #include <sys/zfs_dir.h> | |
51 | #include <sys/zfs_acl.h> | |
52 | #include <sys/zfs_ioctl.h> | |
53 | #include <sys/zfs_rlock.h> | |
54 | #include <sys/zfs_fuid.h> | |
3558fd73 | 55 | #include <sys/zfs_vnops.h> |
ebe7e575 | 56 | #include <sys/zfs_ctldir.h> |
428870ff | 57 | #include <sys/dnode.h> |
34dc7c2f BB |
58 | #include <sys/fs/zfs.h> |
59 | #include <sys/kidmap.h> | |
3558fd73 | 60 | #include <sys/zpl.h> |
34dc7c2f BB |
61 | #endif /* _KERNEL */ |
62 | ||
63 | #include <sys/dmu.h> | |
64 | #include <sys/refcount.h> | |
65 | #include <sys/stat.h> | |
66 | #include <sys/zap.h> | |
67 | #include <sys/zfs_znode.h> | |
428870ff BB |
68 | #include <sys/sa.h> |
69 | #include <sys/zfs_sa.h> | |
572e2857 | 70 | #include <sys/zfs_stat.h> |
34dc7c2f BB |
71 | |
72 | #include "zfs_prop.h" | |
428870ff | 73 | #include "zfs_comutil.h" |
34dc7c2f | 74 | |
b128c09f BB |
75 | /* |
76 | * Define ZNODE_STATS to turn on statistic gathering. By default, it is only | |
77 | * turned on when DEBUG is also defined. | |
78 | */ | |
79 | #ifdef DEBUG | |
80 | #define ZNODE_STATS | |
81 | #endif /* DEBUG */ | |
82 | ||
83 | #ifdef ZNODE_STATS | |
84 | #define ZNODE_STAT_ADD(stat) ((stat)++) | |
85 | #else | |
86 | #define ZNODE_STAT_ADD(stat) /* nothing */ | |
87 | #endif /* ZNODE_STATS */ | |
88 | ||
34dc7c2f BB |
89 | /* |
90 | * Functions needed for userland (ie: libzpool) are not put under | |
91 | * #ifdef_KERNEL; the rest of the functions have dependencies | |
92 | * (such as VFS logic) that will not compile easily in userland. | |
93 | */ | |
94 | #ifdef _KERNEL | |
9babb374 | 95 | |
b128c09f | 96 | static kmem_cache_t *znode_cache = NULL; |
34dc7c2f | 97 | |
34dc7c2f BB |
98 | /*ARGSUSED*/ |
99 | static int | |
b128c09f | 100 | zfs_znode_cache_constructor(void *buf, void *arg, int kmflags) |
34dc7c2f BB |
101 | { |
102 | znode_t *zp = buf; | |
103 | ||
3558fd73 | 104 | inode_init_once(ZTOI(zp)); |
b128c09f BB |
105 | list_link_init(&zp->z_link_node); |
106 | ||
34dc7c2f | 107 | mutex_init(&zp->z_lock, NULL, MUTEX_DEFAULT, NULL); |
34dc7c2f BB |
108 | rw_init(&zp->z_parent_lock, NULL, RW_DEFAULT, NULL); |
109 | rw_init(&zp->z_name_lock, NULL, RW_DEFAULT, NULL); | |
110 | mutex_init(&zp->z_acl_lock, NULL, MUTEX_DEFAULT, NULL); | |
82a37189 | 111 | rw_init(&zp->z_xattr_lock, NULL, RW_DEFAULT, NULL); |
34dc7c2f BB |
112 | |
113 | mutex_init(&zp->z_range_lock, NULL, MUTEX_DEFAULT, NULL); | |
114 | avl_create(&zp->z_range_avl, zfs_range_compare, | |
115 | sizeof (rl_t), offsetof(rl_t, r_node)); | |
116 | ||
b128c09f | 117 | zp->z_dirlocks = NULL; |
45d1cae3 | 118 | zp->z_acl_cached = NULL; |
82a37189 | 119 | zp->z_xattr_cached = NULL; |
e89260a1 | 120 | zp->z_xattr_parent = NULL; |
572e2857 | 121 | zp->z_moved = 0; |
34dc7c2f BB |
122 | return (0); |
123 | } | |
124 | ||
125 | /*ARGSUSED*/ | |
126 | static void | |
b128c09f | 127 | zfs_znode_cache_destructor(void *buf, void *arg) |
34dc7c2f BB |
128 | { |
129 | znode_t *zp = buf; | |
130 | ||
b128c09f | 131 | ASSERT(!list_link_active(&zp->z_link_node)); |
34dc7c2f | 132 | mutex_destroy(&zp->z_lock); |
34dc7c2f BB |
133 | rw_destroy(&zp->z_parent_lock); |
134 | rw_destroy(&zp->z_name_lock); | |
135 | mutex_destroy(&zp->z_acl_lock); | |
82a37189 | 136 | rw_destroy(&zp->z_xattr_lock); |
34dc7c2f BB |
137 | avl_destroy(&zp->z_range_avl); |
138 | mutex_destroy(&zp->z_range_lock); | |
139 | ||
b128c09f | 140 | ASSERT(zp->z_dirlocks == NULL); |
45d1cae3 | 141 | ASSERT(zp->z_acl_cached == NULL); |
82a37189 | 142 | ASSERT(zp->z_xattr_cached == NULL); |
e89260a1 | 143 | ASSERT(zp->z_xattr_parent == NULL); |
b128c09f BB |
144 | } |
145 | ||
34dc7c2f BB |
146 | void |
147 | zfs_znode_init(void) | |
148 | { | |
149 | /* | |
150 | * Initialize zcache | |
151 | */ | |
152 | ASSERT(znode_cache == NULL); | |
153 | znode_cache = kmem_cache_create("zfs_znode_cache", | |
154 | sizeof (znode_t), 0, zfs_znode_cache_constructor, | |
3558fd73 | 155 | zfs_znode_cache_destructor, NULL, NULL, NULL, KMC_KMEM); |
34dc7c2f BB |
156 | } |
157 | ||
158 | void | |
159 | zfs_znode_fini(void) | |
160 | { | |
34dc7c2f BB |
161 | /* |
162 | * Cleanup zcache | |
163 | */ | |
164 | if (znode_cache) | |
165 | kmem_cache_destroy(znode_cache); | |
166 | znode_cache = NULL; | |
167 | } | |
168 | ||
34dc7c2f | 169 | int |
3558fd73 | 170 | zfs_create_share_dir(zfs_sb_t *zsb, dmu_tx_t *tx) |
34dc7c2f | 171 | { |
3c9609b3 | 172 | #ifdef HAVE_SMB_SHARE |
9babb374 BB |
173 | zfs_acl_ids_t acl_ids; |
174 | vattr_t vattr; | |
175 | znode_t *sharezp; | |
176 | vnode_t *vp; | |
177 | znode_t *zp; | |
178 | int error; | |
34dc7c2f | 179 | |
9babb374 | 180 | vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; |
3558fd73 | 181 | vattr.va_mode = S_IFDIR | 0555; |
9babb374 BB |
182 | vattr.va_uid = crgetuid(kcred); |
183 | vattr.va_gid = crgetgid(kcred); | |
34dc7c2f | 184 | |
691f6ac4 | 185 | sharezp = kmem_cache_alloc(znode_cache, KM_PUSHPAGE); |
572e2857 | 186 | sharezp->z_moved = 0; |
9babb374 BB |
187 | sharezp->z_unlinked = 0; |
188 | sharezp->z_atime_dirty = 0; | |
189 | sharezp->z_zfsvfs = zfsvfs; | |
428870ff | 190 | sharezp->z_is_sa = zfsvfs->z_use_sa; |
34dc7c2f | 191 | |
9babb374 BB |
192 | vp = ZTOV(sharezp); |
193 | vn_reinit(vp); | |
194 | vp->v_type = VDIR; | |
34dc7c2f | 195 | |
9babb374 BB |
196 | VERIFY(0 == zfs_acl_ids_create(sharezp, IS_ROOT_NODE, &vattr, |
197 | kcred, NULL, &acl_ids)); | |
428870ff | 198 | zfs_mknode(sharezp, &vattr, tx, kcred, IS_ROOT_NODE, &zp, &acl_ids); |
9babb374 BB |
199 | ASSERT3P(zp, ==, sharezp); |
200 | ASSERT(!vn_in_dnlc(ZTOV(sharezp))); /* not valid to move */ | |
201 | POINTER_INVALIDATE(&sharezp->z_zfsvfs); | |
202 | error = zap_add(zfsvfs->z_os, MASTER_NODE_OBJ, | |
203 | ZFS_SHARES_DIR, 8, 1, &sharezp->z_id, tx); | |
204 | zfsvfs->z_shares_dir = sharezp->z_id; | |
205 | ||
206 | zfs_acl_ids_free(&acl_ids); | |
3558fd73 | 207 | // ZTOV(sharezp)->v_count = 0; |
428870ff | 208 | sa_handle_destroy(sharezp->z_sa_hdl); |
9babb374 | 209 | kmem_cache_free(znode_cache, sharezp); |
34dc7c2f | 210 | |
9babb374 | 211 | return (error); |
9ee7fac5 BB |
212 | #else |
213 | return (0); | |
3c9609b3 | 214 | #endif /* HAVE_SMB_SHARE */ |
34dc7c2f BB |
215 | } |
216 | ||
34dc7c2f | 217 | static void |
3558fd73 | 218 | zfs_znode_sa_init(zfs_sb_t *zsb, znode_t *zp, |
428870ff | 219 | dmu_buf_t *db, dmu_object_type_t obj_type, sa_handle_t *sa_hdl) |
34dc7c2f | 220 | { |
3558fd73 | 221 | ASSERT(MUTEX_HELD(ZFS_OBJ_MUTEX(zsb, zp->z_id))); |
34dc7c2f BB |
222 | |
223 | mutex_enter(&zp->z_lock); | |
224 | ||
428870ff BB |
225 | ASSERT(zp->z_sa_hdl == NULL); |
226 | ASSERT(zp->z_acl_cached == NULL); | |
227 | if (sa_hdl == NULL) { | |
3558fd73 | 228 | VERIFY(0 == sa_handle_get_from_db(zsb->z_os, db, zp, |
428870ff BB |
229 | SA_HDL_SHARED, &zp->z_sa_hdl)); |
230 | } else { | |
231 | zp->z_sa_hdl = sa_hdl; | |
232 | sa_set_userp(sa_hdl, zp); | |
233 | } | |
34dc7c2f | 234 | |
428870ff | 235 | zp->z_is_sa = (obj_type == DMU_OT_SA) ? B_TRUE : B_FALSE; |
34dc7c2f | 236 | |
34dc7c2f | 237 | mutex_exit(&zp->z_lock); |
34dc7c2f BB |
238 | } |
239 | ||
240 | void | |
241 | zfs_znode_dmu_fini(znode_t *zp) | |
242 | { | |
3558fd73 | 243 | ASSERT(MUTEX_HELD(ZFS_OBJ_MUTEX(ZTOZSB(zp), zp->z_id)) || |
b128c09f | 244 | zp->z_unlinked || |
3558fd73 | 245 | RW_WRITE_HELD(&ZTOZSB(zp)->z_teardown_inactive_lock)); |
428870ff BB |
246 | |
247 | sa_handle_destroy(zp->z_sa_hdl); | |
248 | zp->z_sa_hdl = NULL; | |
34dc7c2f BB |
249 | } |
250 | ||
251 | /* | |
3558fd73 BB |
252 | * Called by new_inode() to allocate a new inode. |
253 | */ | |
254 | int | |
255 | zfs_inode_alloc(struct super_block *sb, struct inode **ip) | |
256 | { | |
257 | znode_t *zp; | |
258 | ||
691f6ac4 | 259 | zp = kmem_cache_alloc(znode_cache, KM_PUSHPAGE); |
3558fd73 BB |
260 | *ip = ZTOI(zp); |
261 | ||
262 | return (0); | |
263 | } | |
264 | ||
265 | /* | |
266 | * Called in multiple places when an inode should be destroyed. | |
267 | */ | |
268 | void | |
269 | zfs_inode_destroy(struct inode *ip) | |
270 | { | |
271 | znode_t *zp = ITOZ(ip); | |
272 | zfs_sb_t *zsb = ZTOZSB(zp); | |
273 | ||
ebe7e575 BB |
274 | if (zfsctl_is_node(ip)) |
275 | zfsctl_inode_destroy(ip); | |
276 | ||
3558fd73 | 277 | mutex_enter(&zsb->z_znodes_lock); |
7b3e34ba BB |
278 | if (list_link_active(&zp->z_link_node)) { |
279 | list_remove(&zsb->z_all_znodes, zp); | |
280 | zsb->z_nr_znodes--; | |
281 | } | |
3558fd73 BB |
282 | mutex_exit(&zsb->z_znodes_lock); |
283 | ||
284 | if (zp->z_acl_cached) { | |
285 | zfs_acl_free(zp->z_acl_cached); | |
286 | zp->z_acl_cached = NULL; | |
287 | } | |
288 | ||
82a37189 BB |
289 | if (zp->z_xattr_cached) { |
290 | nvlist_free(zp->z_xattr_cached); | |
291 | zp->z_xattr_cached = NULL; | |
292 | } | |
293 | ||
e89260a1 | 294 | if (zp->z_xattr_parent) { |
0a50679c | 295 | zfs_iput_async(ZTOI(zp->z_xattr_parent)); |
e89260a1 BB |
296 | zp->z_xattr_parent = NULL; |
297 | } | |
298 | ||
3558fd73 BB |
299 | kmem_cache_free(znode_cache, zp); |
300 | } | |
301 | ||
302 | static void | |
303 | zfs_inode_set_ops(zfs_sb_t *zsb, struct inode *ip) | |
304 | { | |
aa6d8c10 | 305 | uint64_t rdev = 0; |
3558fd73 BB |
306 | |
307 | switch (ip->i_mode & S_IFMT) { | |
308 | case S_IFREG: | |
309 | ip->i_op = &zpl_inode_operations; | |
310 | ip->i_fop = &zpl_file_operations; | |
311 | ip->i_mapping->a_ops = &zpl_address_space_operations; | |
312 | break; | |
313 | ||
314 | case S_IFDIR: | |
315 | ip->i_op = &zpl_dir_inode_operations; | |
316 | ip->i_fop = &zpl_dir_file_operations; | |
317 | ITOZ(ip)->z_zn_prefetch = B_TRUE; | |
318 | break; | |
319 | ||
320 | case S_IFLNK: | |
321 | ip->i_op = &zpl_symlink_inode_operations; | |
322 | break; | |
323 | ||
aa6d8c10 NB |
324 | /* |
325 | * rdev is only stored in a SA only for device files. | |
326 | */ | |
3558fd73 BB |
327 | case S_IFCHR: |
328 | case S_IFBLK: | |
3558fd73 BB |
329 | VERIFY(sa_lookup(ITOZ(ip)->z_sa_hdl, SA_ZPL_RDEV(zsb), |
330 | &rdev, sizeof (rdev)) == 0); | |
aa6d8c10 NB |
331 | /*FALLTHROUGH*/ |
332 | case S_IFIFO: | |
333 | case S_IFSOCK: | |
3558fd73 BB |
334 | init_special_inode(ip, ip->i_mode, rdev); |
335 | ip->i_op = &zpl_special_inode_operations; | |
336 | break; | |
337 | ||
338 | default: | |
339 | printk("ZFS: Invalid mode: 0x%x\n", ip->i_mode); | |
340 | VERIFY(0); | |
341 | } | |
342 | } | |
343 | ||
344 | /* | |
345 | * Construct a znode+inode and initialize. | |
34dc7c2f BB |
346 | * |
347 | * This does not do a call to dmu_set_user() that is | |
348 | * up to the caller to do, in case you don't want to | |
349 | * return the znode | |
350 | */ | |
351 | static znode_t * | |
3558fd73 | 352 | zfs_znode_alloc(zfs_sb_t *zsb, dmu_buf_t *db, int blksz, |
c85b224f | 353 | dmu_object_type_t obj_type, uint64_t obj, sa_handle_t *hdl, |
7b3e34ba | 354 | struct inode *dip) |
34dc7c2f BB |
355 | { |
356 | znode_t *zp; | |
3558fd73 | 357 | struct inode *ip; |
7f89ae6b | 358 | uint64_t mode; |
428870ff | 359 | uint64_t parent; |
428870ff BB |
360 | sa_bulk_attr_t bulk[9]; |
361 | int count = 0; | |
34dc7c2f | 362 | |
3558fd73 | 363 | ASSERT(zsb != NULL); |
34dc7c2f | 364 | |
3558fd73 BB |
365 | ip = new_inode(zsb->z_sb); |
366 | if (ip == NULL) | |
367 | return (NULL); | |
7304b6e5 | 368 | |
3558fd73 | 369 | zp = ITOZ(ip); |
34dc7c2f | 370 | ASSERT(zp->z_dirlocks == NULL); |
ebe7e575 BB |
371 | ASSERT3P(zp->z_acl_cached, ==, NULL); |
372 | ASSERT3P(zp->z_xattr_cached, ==, NULL); | |
e89260a1 | 373 | ASSERT3P(zp->z_xattr_parent, ==, NULL); |
572e2857 | 374 | zp->z_moved = 0; |
428870ff | 375 | zp->z_sa_hdl = NULL; |
34dc7c2f BB |
376 | zp->z_unlinked = 0; |
377 | zp->z_atime_dirty = 0; | |
378 | zp->z_mapcnt = 0; | |
34dc7c2f BB |
379 | zp->z_id = db->db_object; |
380 | zp->z_blksz = blksz; | |
381 | zp->z_seq = 0x7A4653; | |
382 | zp->z_sync_cnt = 0; | |
ebe7e575 BB |
383 | zp->z_is_zvol = B_FALSE; |
384 | zp->z_is_mapped = B_FALSE; | |
385 | zp->z_is_ctldir = B_FALSE; | |
7b3e34ba | 386 | zp->z_is_stale = B_FALSE; |
34dc7c2f | 387 | |
3558fd73 BB |
388 | zfs_znode_sa_init(zsb, zp, db, obj_type, hdl); |
389 | ||
7f89ae6b | 390 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zsb), NULL, &mode, 8); |
3558fd73 BB |
391 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zsb), NULL, &zp->z_gen, 8); |
392 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zsb), NULL, &zp->z_size, 8); | |
393 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_LINKS(zsb), NULL, &zp->z_links, 8); | |
394 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zsb), NULL, | |
428870ff | 395 | &zp->z_pflags, 8); |
3558fd73 | 396 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_PARENT(zsb), NULL, |
7304b6e5 | 397 | &parent, 8); |
3558fd73 | 398 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zsb), NULL, |
428870ff | 399 | &zp->z_atime, 16); |
3558fd73 BB |
400 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zsb), NULL, &zp->z_uid, 8); |
401 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zsb), NULL, &zp->z_gid, 8); | |
428870ff BB |
402 | |
403 | if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count) != 0 || zp->z_gen == 0) { | |
404 | if (hdl == NULL) | |
405 | sa_handle_destroy(zp->z_sa_hdl); | |
34dc7c2f | 406 | |
3558fd73 | 407 | goto error; |
34dc7c2f | 408 | } |
7304b6e5 | 409 | |
7f89ae6b BB |
410 | zp->z_mode = mode; |
411 | ||
e89260a1 BB |
412 | /* |
413 | * xattr znodes hold a reference on their unique parent | |
414 | */ | |
415 | if (dip && zp->z_pflags & ZFS_XATTR) { | |
416 | igrab(dip); | |
417 | zp->z_xattr_parent = ITOZ(dip); | |
418 | } | |
419 | ||
3558fd73 | 420 | ip->i_ino = obj; |
5f35b190 | 421 | zfs_inode_update(zp); |
3558fd73 BB |
422 | zfs_inode_set_ops(zsb, ip); |
423 | ||
7b3e34ba BB |
424 | /* |
425 | * The only way insert_inode_locked() can fail is if the ip->i_ino | |
426 | * number is already hashed for this super block. This can never | |
427 | * happen because the inode numbers map 1:1 with the object numbers. | |
428 | * | |
429 | * The one exception is rolling back a mounted file system, but in | |
430 | * this case all the active inode are unhashed during the rollback. | |
431 | */ | |
432 | VERIFY3S(insert_inode_locked(ip), ==, 0); | |
c85b224f | 433 | |
3558fd73 BB |
434 | mutex_enter(&zsb->z_znodes_lock); |
435 | list_insert_tail(&zsb->z_all_znodes, zp); | |
ab26409d | 436 | zsb->z_nr_znodes++; |
b128c09f | 437 | membar_producer(); |
3558fd73 | 438 | mutex_exit(&zsb->z_znodes_lock); |
b128c09f | 439 | |
3558fd73 | 440 | unlock_new_inode(ip); |
34dc7c2f | 441 | return (zp); |
3558fd73 BB |
442 | |
443 | error: | |
444 | unlock_new_inode(ip); | |
445 | iput(ip); | |
d1d7e268 | 446 | return (NULL); |
34dc7c2f BB |
447 | } |
448 | ||
9d317793 RY |
449 | void |
450 | zfs_set_inode_flags(znode_t *zp, struct inode *ip) | |
451 | { | |
452 | /* | |
453 | * Linux and Solaris have different sets of file attributes, so we | |
454 | * restrict this conversion to the intersection of the two. | |
455 | */ | |
456 | ||
457 | if (zp->z_pflags & ZFS_IMMUTABLE) | |
458 | ip->i_flags |= S_IMMUTABLE; | |
459 | else | |
460 | ip->i_flags &= ~S_IMMUTABLE; | |
461 | ||
462 | if (zp->z_pflags & ZFS_APPENDONLY) | |
463 | ip->i_flags |= S_APPEND; | |
464 | else | |
465 | ip->i_flags &= ~S_APPEND; | |
466 | } | |
467 | ||
960e08fe BB |
468 | /* |
469 | * Update the embedded inode given the znode. We should work toward | |
470 | * eliminating this function as soon as possible by removing values | |
471 | * which are duplicated between the znode and inode. If the generic | |
472 | * inode has the correct field it should be used, and the ZFS code | |
473 | * updated to access the inode. This can be done incrementally. | |
474 | */ | |
475 | void | |
476 | zfs_inode_update(znode_t *zp) | |
477 | { | |
3558fd73 BB |
478 | zfs_sb_t *zsb; |
479 | struct inode *ip; | |
960e08fe BB |
480 | uint32_t blksize; |
481 | uint64_t atime[2], mtime[2], ctime[2]; | |
482 | ||
483 | ASSERT(zp != NULL); | |
3558fd73 BB |
484 | zsb = ZTOZSB(zp); |
485 | ip = ZTOI(zp); | |
486 | ||
ebe7e575 BB |
487 | /* Skip .zfs control nodes which do not exist on disk. */ |
488 | if (zfsctl_is_node(ip)) | |
489 | return; | |
490 | ||
3558fd73 BB |
491 | sa_lookup(zp->z_sa_hdl, SA_ZPL_ATIME(zsb), &atime, 16); |
492 | sa_lookup(zp->z_sa_hdl, SA_ZPL_MTIME(zsb), &mtime, 16); | |
493 | sa_lookup(zp->z_sa_hdl, SA_ZPL_CTIME(zsb), &ctime, 16); | |
494 | ||
495 | spin_lock(&ip->i_lock); | |
496 | ip->i_generation = zp->z_gen; | |
570d6edf RY |
497 | ip->i_uid = SUID_TO_KUID(zp->z_uid); |
498 | ip->i_gid = SGID_TO_KGID(zp->z_gid); | |
28eb9213 | 499 | set_nlink(ip, zp->z_links); |
3558fd73 | 500 | ip->i_mode = zp->z_mode; |
9d317793 | 501 | zfs_set_inode_flags(zp, ip); |
3558fd73 | 502 | ip->i_blkbits = SPA_MINBLOCKSHIFT; |
960e08fe | 503 | dmu_object_size_from_db(sa_get_db(zp->z_sa_hdl), &blksize, |
3558fd73 | 504 | (u_longlong_t *)&ip->i_blocks); |
960e08fe | 505 | |
3558fd73 BB |
506 | ZFS_TIME_DECODE(&ip->i_atime, atime); |
507 | ZFS_TIME_DECODE(&ip->i_mtime, mtime); | |
508 | ZFS_TIME_DECODE(&ip->i_ctime, ctime); | |
960e08fe | 509 | |
3558fd73 BB |
510 | i_size_write(ip, zp->z_size); |
511 | spin_unlock(&ip->i_lock); | |
960e08fe BB |
512 | } |
513 | ||
1e8db771 BB |
514 | /* |
515 | * Safely mark an inode dirty. Inodes which are part of a read-only | |
516 | * file system or snapshot may not be dirtied. | |
517 | */ | |
518 | void | |
519 | zfs_mark_inode_dirty(struct inode *ip) | |
520 | { | |
521 | zfs_sb_t *zsb = ITOZSB(ip); | |
522 | ||
523 | if (zfs_is_readonly(zsb) || dmu_objset_is_snapshot(zsb->z_os)) | |
524 | return; | |
525 | ||
526 | mark_inode_dirty(ip); | |
527 | } | |
528 | ||
428870ff BB |
529 | static uint64_t empty_xattr; |
530 | static uint64_t pad[4]; | |
531 | static zfs_acl_phys_t acl_phys; | |
34dc7c2f BB |
532 | /* |
533 | * Create a new DMU object to hold a zfs znode. | |
534 | * | |
535 | * IN: dzp - parent directory for new znode | |
536 | * vap - file attributes for new znode | |
537 | * tx - dmu transaction id for zap operations | |
538 | * cr - credentials of caller | |
539 | * flag - flags: | |
540 | * IS_ROOT_NODE - new object will be root | |
541 | * IS_XATTR - new object is an attribute | |
34dc7c2f BB |
542 | * bonuslen - length of bonus buffer |
543 | * setaclp - File/Dir initial ACL | |
544 | * fuidp - Tracks fuid allocation. | |
545 | * | |
546 | * OUT: zpp - allocated znode | |
547 | * | |
548 | */ | |
549 | void | |
550 | zfs_mknode(znode_t *dzp, vattr_t *vap, dmu_tx_t *tx, cred_t *cr, | |
428870ff | 551 | uint_t flag, znode_t **zpp, zfs_acl_ids_t *acl_ids) |
34dc7c2f | 552 | { |
428870ff BB |
553 | uint64_t crtime[2], atime[2], mtime[2], ctime[2]; |
554 | uint64_t mode, size, links, parent, pflags; | |
572e2857 | 555 | uint64_t dzp_pflags = 0; |
428870ff | 556 | uint64_t rdev = 0; |
3558fd73 | 557 | zfs_sb_t *zsb = ZTOZSB(dzp); |
428870ff | 558 | dmu_buf_t *db; |
34dc7c2f BB |
559 | timestruc_t now; |
560 | uint64_t gen, obj; | |
428870ff BB |
561 | int bonuslen; |
562 | sa_handle_t *sa_hdl; | |
563 | dmu_object_type_t obj_type; | |
f30484af | 564 | sa_bulk_attr_t *sa_attrs; |
428870ff BB |
565 | int cnt = 0; |
566 | zfs_acl_locator_cb_t locate = { 0 }; | |
34dc7c2f | 567 | |
3558fd73 | 568 | if (zsb->z_replay) { |
34dc7c2f | 569 | obj = vap->va_nodeid; |
34dc7c2f BB |
570 | now = vap->va_ctime; /* see zfs_replay_create() */ |
571 | gen = vap->va_nblocks; /* ditto */ | |
572 | } else { | |
573 | obj = 0; | |
574 | gethrestime(&now); | |
575 | gen = dmu_tx_get_txg(tx); | |
576 | } | |
577 | ||
3558fd73 | 578 | obj_type = zsb->z_use_sa ? DMU_OT_SA : DMU_OT_ZNODE; |
428870ff BB |
579 | bonuslen = (obj_type == DMU_OT_SA) ? |
580 | DN_MAX_BONUSLEN : ZFS_OLD_ZNODE_PHYS_SIZE; | |
581 | ||
34dc7c2f BB |
582 | /* |
583 | * Create a new DMU object. | |
584 | */ | |
585 | /* | |
586 | * There's currently no mechanism for pre-reading the blocks that will | |
572e2857 | 587 | * be needed to allocate a new object, so we accept the small chance |
34dc7c2f BB |
588 | * that there will be an i/o error and we will fail one of the |
589 | * assertions below. | |
590 | */ | |
3558fd73 BB |
591 | if (S_ISDIR(vap->va_mode)) { |
592 | if (zsb->z_replay) { | |
b0bc7a84 | 593 | VERIFY0(zap_create_claim_norm(zsb->z_os, obj, |
3558fd73 | 594 | zsb->z_norm, DMU_OT_DIRECTORY_CONTENTS, |
b0bc7a84 | 595 | obj_type, bonuslen, tx)); |
34dc7c2f | 596 | } else { |
3558fd73 BB |
597 | obj = zap_create_norm(zsb->z_os, |
598 | zsb->z_norm, DMU_OT_DIRECTORY_CONTENTS, | |
428870ff | 599 | obj_type, bonuslen, tx); |
34dc7c2f BB |
600 | } |
601 | } else { | |
3558fd73 | 602 | if (zsb->z_replay) { |
b0bc7a84 | 603 | VERIFY0(dmu_object_claim(zsb->z_os, obj, |
34dc7c2f | 604 | DMU_OT_PLAIN_FILE_CONTENTS, 0, |
b0bc7a84 | 605 | obj_type, bonuslen, tx)); |
34dc7c2f | 606 | } else { |
3558fd73 | 607 | obj = dmu_object_alloc(zsb->z_os, |
34dc7c2f | 608 | DMU_OT_PLAIN_FILE_CONTENTS, 0, |
428870ff | 609 | obj_type, bonuslen, tx); |
34dc7c2f BB |
610 | } |
611 | } | |
34dc7c2f | 612 | |
3558fd73 BB |
613 | ZFS_OBJ_HOLD_ENTER(zsb, obj); |
614 | VERIFY(0 == sa_buf_hold(zsb->z_os, obj, NULL, &db)); | |
34dc7c2f BB |
615 | |
616 | /* | |
617 | * If this is the root, fix up the half-initialized parent pointer | |
618 | * to reference the just-allocated physical data area. | |
619 | */ | |
620 | if (flag & IS_ROOT_NODE) { | |
34dc7c2f | 621 | dzp->z_id = obj; |
428870ff BB |
622 | } else { |
623 | dzp_pflags = dzp->z_pflags; | |
34dc7c2f BB |
624 | } |
625 | ||
626 | /* | |
627 | * If parent is an xattr, so am I. | |
628 | */ | |
428870ff | 629 | if (dzp_pflags & ZFS_XATTR) { |
34dc7c2f | 630 | flag |= IS_XATTR; |
34dc7c2f BB |
631 | } |
632 | ||
3558fd73 | 633 | if (zsb->z_use_fuids) |
428870ff BB |
634 | pflags = ZFS_ARCHIVE | ZFS_AV_MODIFIED; |
635 | else | |
636 | pflags = 0; | |
34dc7c2f | 637 | |
3558fd73 | 638 | if (S_ISDIR(vap->va_mode)) { |
428870ff BB |
639 | size = 2; /* contents ("." and "..") */ |
640 | links = (flag & (IS_ROOT_NODE | IS_XATTR)) ? 2 : 1; | |
641 | } else { | |
642 | size = links = 0; | |
34dc7c2f BB |
643 | } |
644 | ||
aa6d8c10 | 645 | if (S_ISBLK(vap->va_mode) || S_ISCHR(vap->va_mode)) |
dc1d7665 | 646 | rdev = vap->va_rdev; |
428870ff BB |
647 | |
648 | parent = dzp->z_id; | |
649 | mode = acl_ids->z_mode; | |
34dc7c2f | 650 | if (flag & IS_XATTR) |
428870ff | 651 | pflags |= ZFS_XATTR; |
34dc7c2f | 652 | |
428870ff BB |
653 | /* |
654 | * No execs denied will be deterimed when zfs_mode_compute() is called. | |
655 | */ | |
656 | pflags |= acl_ids->z_aclp->z_hints & | |
657 | (ZFS_ACL_TRIVIAL|ZFS_INHERIT_ACE|ZFS_ACL_AUTO_INHERIT| | |
658 | ZFS_ACL_DEFAULTED|ZFS_ACL_PROTECTED); | |
34dc7c2f | 659 | |
428870ff BB |
660 | ZFS_TIME_ENCODE(&now, crtime); |
661 | ZFS_TIME_ENCODE(&now, ctime); | |
34dc7c2f | 662 | |
3558fd73 | 663 | if (vap->va_mask & ATTR_ATIME) { |
428870ff | 664 | ZFS_TIME_ENCODE(&vap->va_atime, atime); |
34dc7c2f | 665 | } else { |
428870ff | 666 | ZFS_TIME_ENCODE(&now, atime); |
34dc7c2f BB |
667 | } |
668 | ||
3558fd73 | 669 | if (vap->va_mask & ATTR_MTIME) { |
428870ff BB |
670 | ZFS_TIME_ENCODE(&vap->va_mtime, mtime); |
671 | } else { | |
672 | ZFS_TIME_ENCODE(&now, mtime); | |
673 | } | |
674 | ||
675 | /* Now add in all of the "SA" attributes */ | |
3558fd73 | 676 | VERIFY(0 == sa_handle_get_from_db(zsb->z_os, db, NULL, SA_HDL_SHARED, |
428870ff BB |
677 | &sa_hdl)); |
678 | ||
679 | /* | |
680 | * Setup the array of attributes to be replaced/set on the new file | |
681 | * | |
682 | * order for DMU_OT_ZNODE is critical since it needs to be constructed | |
683 | * in the old znode_phys_t format. Don't change this ordering | |
684 | */ | |
d1d7e268 | 685 | sa_attrs = kmem_alloc(sizeof (sa_bulk_attr_t) * ZPL_END, KM_PUSHPAGE); |
428870ff BB |
686 | |
687 | if (obj_type == DMU_OT_ZNODE) { | |
3558fd73 | 688 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ATIME(zsb), |
428870ff | 689 | NULL, &atime, 16); |
3558fd73 | 690 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MTIME(zsb), |
428870ff | 691 | NULL, &mtime, 16); |
3558fd73 | 692 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CTIME(zsb), |
428870ff | 693 | NULL, &ctime, 16); |
3558fd73 | 694 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CRTIME(zsb), |
428870ff | 695 | NULL, &crtime, 16); |
3558fd73 | 696 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GEN(zsb), |
428870ff | 697 | NULL, &gen, 8); |
3558fd73 | 698 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MODE(zsb), |
428870ff | 699 | NULL, &mode, 8); |
3558fd73 | 700 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_SIZE(zsb), |
428870ff | 701 | NULL, &size, 8); |
3558fd73 | 702 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PARENT(zsb), |
428870ff | 703 | NULL, &parent, 8); |
34dc7c2f | 704 | } else { |
3558fd73 | 705 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MODE(zsb), |
428870ff | 706 | NULL, &mode, 8); |
3558fd73 | 707 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_SIZE(zsb), |
428870ff | 708 | NULL, &size, 8); |
3558fd73 | 709 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GEN(zsb), |
428870ff | 710 | NULL, &gen, 8); |
3558fd73 BB |
711 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_UID(zsb), |
712 | NULL, &acl_ids->z_fuid, 8); | |
713 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GID(zsb), | |
714 | NULL, &acl_ids->z_fgid, 8); | |
715 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PARENT(zsb), | |
428870ff | 716 | NULL, &parent, 8); |
3558fd73 | 717 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_FLAGS(zsb), |
428870ff | 718 | NULL, &pflags, 8); |
3558fd73 | 719 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ATIME(zsb), |
428870ff | 720 | NULL, &atime, 16); |
3558fd73 | 721 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MTIME(zsb), |
428870ff | 722 | NULL, &mtime, 16); |
3558fd73 | 723 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CTIME(zsb), |
428870ff | 724 | NULL, &ctime, 16); |
3558fd73 | 725 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CRTIME(zsb), |
428870ff BB |
726 | NULL, &crtime, 16); |
727 | } | |
728 | ||
3558fd73 | 729 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_LINKS(zsb), NULL, &links, 8); |
428870ff BB |
730 | |
731 | if (obj_type == DMU_OT_ZNODE) { | |
3558fd73 | 732 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_XATTR(zsb), NULL, |
428870ff | 733 | &empty_xattr, 8); |
34dc7c2f | 734 | } |
428870ff | 735 | if (obj_type == DMU_OT_ZNODE || |
aa6d8c10 | 736 | (S_ISBLK(vap->va_mode) || S_ISCHR(vap->va_mode))) { |
3558fd73 | 737 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_RDEV(zsb), |
428870ff | 738 | NULL, &rdev, 8); |
428870ff BB |
739 | } |
740 | if (obj_type == DMU_OT_ZNODE) { | |
3558fd73 | 741 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_FLAGS(zsb), |
428870ff | 742 | NULL, &pflags, 8); |
3558fd73 | 743 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_UID(zsb), NULL, |
428870ff | 744 | &acl_ids->z_fuid, 8); |
3558fd73 | 745 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GID(zsb), NULL, |
428870ff | 746 | &acl_ids->z_fgid, 8); |
3558fd73 | 747 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PAD(zsb), NULL, pad, |
428870ff | 748 | sizeof (uint64_t) * 4); |
3558fd73 | 749 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ZNODE_ACL(zsb), NULL, |
428870ff BB |
750 | &acl_phys, sizeof (zfs_acl_phys_t)); |
751 | } else if (acl_ids->z_aclp->z_version >= ZFS_ACL_VERSION_FUID) { | |
3558fd73 | 752 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_DACL_COUNT(zsb), NULL, |
428870ff BB |
753 | &acl_ids->z_aclp->z_acl_count, 8); |
754 | locate.cb_aclp = acl_ids->z_aclp; | |
3558fd73 | 755 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_DACL_ACES(zsb), |
428870ff BB |
756 | zfs_acl_data_locator, &locate, |
757 | acl_ids->z_aclp->z_acl_bytes); | |
758 | mode = zfs_mode_compute(mode, acl_ids->z_aclp, &pflags, | |
759 | acl_ids->z_fuid, acl_ids->z_fgid); | |
760 | } | |
761 | ||
762 | VERIFY(sa_replace_all_by_template(sa_hdl, sa_attrs, cnt, tx) == 0); | |
34dc7c2f | 763 | |
34dc7c2f | 764 | if (!(flag & IS_ROOT_NODE)) { |
c85b224f | 765 | *zpp = zfs_znode_alloc(zsb, db, 0, obj_type, obj, sa_hdl, |
7b3e34ba BB |
766 | ZTOI(dzp)); |
767 | VERIFY(*zpp != NULL); | |
768 | VERIFY(dzp != NULL); | |
34dc7c2f BB |
769 | } else { |
770 | /* | |
771 | * If we are creating the root node, the "parent" we | |
772 | * passed in is the znode for the root. | |
773 | */ | |
774 | *zpp = dzp; | |
428870ff BB |
775 | |
776 | (*zpp)->z_sa_hdl = sa_hdl; | |
34dc7c2f | 777 | } |
428870ff BB |
778 | |
779 | (*zpp)->z_pflags = pflags; | |
780 | (*zpp)->z_mode = mode; | |
781 | ||
428870ff BB |
782 | if (obj_type == DMU_OT_ZNODE || |
783 | acl_ids->z_aclp->z_version < ZFS_ACL_VERSION_FUID) { | |
b0bc7a84 | 784 | VERIFY0(zfs_aclset_common(*zpp, acl_ids->z_aclp, cr, tx)); |
428870ff | 785 | } |
d1d7e268 | 786 | kmem_free(sa_attrs, sizeof (sa_bulk_attr_t) * ZPL_END); |
3558fd73 | 787 | ZFS_OBJ_HOLD_EXIT(zsb, obj); |
34dc7c2f BB |
788 | } |
789 | ||
5484965a | 790 | /* |
d3cc8b15 WA |
791 | * Update in-core attributes. It is assumed the caller will be doing an |
792 | * sa_bulk_update to push the changes out. | |
5484965a BB |
793 | */ |
794 | void | |
795 | zfs_xvattr_set(znode_t *zp, xvattr_t *xvap, dmu_tx_t *tx) | |
796 | { | |
797 | xoptattr_t *xoap; | |
798 | ||
799 | xoap = xva_getxoptattr(xvap); | |
800 | ASSERT(xoap); | |
801 | ||
802 | if (XVA_ISSET_REQ(xvap, XAT_CREATETIME)) { | |
803 | uint64_t times[2]; | |
804 | ZFS_TIME_ENCODE(&xoap->xoa_createtime, times); | |
805 | (void) sa_update(zp->z_sa_hdl, SA_ZPL_CRTIME(ZTOZSB(zp)), | |
806 | ×, sizeof (times), tx); | |
807 | XVA_SET_RTN(xvap, XAT_CREATETIME); | |
808 | } | |
809 | if (XVA_ISSET_REQ(xvap, XAT_READONLY)) { | |
810 | ZFS_ATTR_SET(zp, ZFS_READONLY, xoap->xoa_readonly, | |
811 | zp->z_pflags, tx); | |
812 | XVA_SET_RTN(xvap, XAT_READONLY); | |
813 | } | |
814 | if (XVA_ISSET_REQ(xvap, XAT_HIDDEN)) { | |
815 | ZFS_ATTR_SET(zp, ZFS_HIDDEN, xoap->xoa_hidden, | |
816 | zp->z_pflags, tx); | |
817 | XVA_SET_RTN(xvap, XAT_HIDDEN); | |
818 | } | |
819 | if (XVA_ISSET_REQ(xvap, XAT_SYSTEM)) { | |
820 | ZFS_ATTR_SET(zp, ZFS_SYSTEM, xoap->xoa_system, | |
821 | zp->z_pflags, tx); | |
822 | XVA_SET_RTN(xvap, XAT_SYSTEM); | |
823 | } | |
824 | if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE)) { | |
825 | ZFS_ATTR_SET(zp, ZFS_ARCHIVE, xoap->xoa_archive, | |
826 | zp->z_pflags, tx); | |
827 | XVA_SET_RTN(xvap, XAT_ARCHIVE); | |
828 | } | |
829 | if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE)) { | |
830 | ZFS_ATTR_SET(zp, ZFS_IMMUTABLE, xoap->xoa_immutable, | |
831 | zp->z_pflags, tx); | |
832 | XVA_SET_RTN(xvap, XAT_IMMUTABLE); | |
833 | } | |
834 | if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK)) { | |
835 | ZFS_ATTR_SET(zp, ZFS_NOUNLINK, xoap->xoa_nounlink, | |
836 | zp->z_pflags, tx); | |
837 | XVA_SET_RTN(xvap, XAT_NOUNLINK); | |
838 | } | |
839 | if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY)) { | |
840 | ZFS_ATTR_SET(zp, ZFS_APPENDONLY, xoap->xoa_appendonly, | |
841 | zp->z_pflags, tx); | |
842 | XVA_SET_RTN(xvap, XAT_APPENDONLY); | |
843 | } | |
844 | if (XVA_ISSET_REQ(xvap, XAT_NODUMP)) { | |
845 | ZFS_ATTR_SET(zp, ZFS_NODUMP, xoap->xoa_nodump, | |
846 | zp->z_pflags, tx); | |
847 | XVA_SET_RTN(xvap, XAT_NODUMP); | |
848 | } | |
849 | if (XVA_ISSET_REQ(xvap, XAT_OPAQUE)) { | |
850 | ZFS_ATTR_SET(zp, ZFS_OPAQUE, xoap->xoa_opaque, | |
851 | zp->z_pflags, tx); | |
852 | XVA_SET_RTN(xvap, XAT_OPAQUE); | |
853 | } | |
854 | if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED)) { | |
855 | ZFS_ATTR_SET(zp, ZFS_AV_QUARANTINED, | |
856 | xoap->xoa_av_quarantined, zp->z_pflags, tx); | |
857 | XVA_SET_RTN(xvap, XAT_AV_QUARANTINED); | |
858 | } | |
859 | if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED)) { | |
860 | ZFS_ATTR_SET(zp, ZFS_AV_MODIFIED, xoap->xoa_av_modified, | |
861 | zp->z_pflags, tx); | |
862 | XVA_SET_RTN(xvap, XAT_AV_MODIFIED); | |
863 | } | |
864 | if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP)) { | |
865 | zfs_sa_set_scanstamp(zp, xvap, tx); | |
866 | XVA_SET_RTN(xvap, XAT_AV_SCANSTAMP); | |
867 | } | |
868 | if (XVA_ISSET_REQ(xvap, XAT_REPARSE)) { | |
869 | ZFS_ATTR_SET(zp, ZFS_REPARSE, xoap->xoa_reparse, | |
870 | zp->z_pflags, tx); | |
871 | XVA_SET_RTN(xvap, XAT_REPARSE); | |
872 | } | |
873 | if (XVA_ISSET_REQ(xvap, XAT_OFFLINE)) { | |
874 | ZFS_ATTR_SET(zp, ZFS_OFFLINE, xoap->xoa_offline, | |
875 | zp->z_pflags, tx); | |
876 | XVA_SET_RTN(xvap, XAT_OFFLINE); | |
877 | } | |
878 | if (XVA_ISSET_REQ(xvap, XAT_SPARSE)) { | |
879 | ZFS_ATTR_SET(zp, ZFS_SPARSE, xoap->xoa_sparse, | |
880 | zp->z_pflags, tx); | |
881 | XVA_SET_RTN(xvap, XAT_SPARSE); | |
882 | } | |
883 | } | |
884 | ||
34dc7c2f | 885 | int |
3558fd73 | 886 | zfs_zget(zfs_sb_t *zsb, uint64_t obj_num, znode_t **zpp) |
34dc7c2f BB |
887 | { |
888 | dmu_object_info_t doi; | |
889 | dmu_buf_t *db; | |
890 | znode_t *zp; | |
891 | int err; | |
428870ff | 892 | sa_handle_t *hdl; |
34dc7c2f BB |
893 | |
894 | *zpp = NULL; | |
895 | ||
6f9548c4 | 896 | again: |
3558fd73 | 897 | ZFS_OBJ_HOLD_ENTER(zsb, obj_num); |
34dc7c2f | 898 | |
3558fd73 | 899 | err = sa_buf_hold(zsb->z_os, obj_num, NULL, &db); |
34dc7c2f | 900 | if (err) { |
3558fd73 | 901 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
34dc7c2f BB |
902 | return (err); |
903 | } | |
904 | ||
905 | dmu_object_info_from_db(db, &doi); | |
428870ff BB |
906 | if (doi.doi_bonus_type != DMU_OT_SA && |
907 | (doi.doi_bonus_type != DMU_OT_ZNODE || | |
908 | (doi.doi_bonus_type == DMU_OT_ZNODE && | |
909 | doi.doi_bonus_size < sizeof (znode_phys_t)))) { | |
910 | sa_buf_rele(db, NULL); | |
3558fd73 | 911 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
2e528b49 | 912 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
913 | } |
914 | ||
428870ff BB |
915 | hdl = dmu_buf_get_user(db); |
916 | if (hdl != NULL) { | |
36df2843 | 917 | zp = sa_get_userdata(hdl); |
34dc7c2f | 918 | |
8ac67298 | 919 | |
34dc7c2f | 920 | /* |
428870ff BB |
921 | * Since "SA" does immediate eviction we |
922 | * should never find a sa handle that doesn't | |
923 | * know about the znode. | |
34dc7c2f | 924 | */ |
428870ff BB |
925 | |
926 | ASSERT3P(zp, !=, NULL); | |
927 | ||
928 | mutex_enter(&zp->z_lock); | |
34dc7c2f BB |
929 | ASSERT3U(zp->z_id, ==, obj_num); |
930 | if (zp->z_unlinked) { | |
2e528b49 | 931 | err = SET_ERROR(ENOENT); |
34dc7c2f | 932 | } else { |
6f9548c4 RY |
933 | /* |
934 | * If igrab() returns NULL the VFS has independently | |
935 | * determined the inode should be evicted and has | |
936 | * called iput_final() to start the eviction process. | |
937 | * The SA handle is still valid but because the VFS | |
938 | * requires that the eviction succeed we must drop | |
939 | * our locks and references to allow the eviction to | |
940 | * complete. The zfs_zget() may then be retried. | |
941 | * | |
942 | * This unlikely case could be optimized by registering | |
943 | * a sops->drop_inode() callback. The callback would | |
944 | * need to detect the active SA hold thereby informing | |
945 | * the VFS that this inode should not be evicted. | |
946 | */ | |
947 | if (igrab(ZTOI(zp)) == NULL) { | |
948 | mutex_exit(&zp->z_lock); | |
949 | sa_buf_rele(db, NULL); | |
950 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); | |
951 | goto again; | |
952 | } | |
34dc7c2f BB |
953 | *zpp = zp; |
954 | err = 0; | |
955 | } | |
34dc7c2f | 956 | mutex_exit(&zp->z_lock); |
f3ad9cd6 | 957 | sa_buf_rele(db, NULL); |
3558fd73 | 958 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
34dc7c2f BB |
959 | return (err); |
960 | } | |
961 | ||
962 | /* | |
3558fd73 | 963 | * Not found create new znode/vnode but only if file exists. |
428870ff BB |
964 | * |
965 | * There is a small window where zfs_vget() could | |
966 | * find this object while a file create is still in | |
967 | * progress. This is checked for in zfs_znode_alloc() | |
968 | * | |
969 | * if zfs_znode_alloc() fails it will drop the hold on the | |
970 | * bonus buffer. | |
34dc7c2f | 971 | */ |
3558fd73 | 972 | zp = zfs_znode_alloc(zsb, db, doi.doi_data_block_size, |
7b3e34ba | 973 | doi.doi_bonus_type, obj_num, NULL, NULL); |
428870ff | 974 | if (zp == NULL) { |
2e528b49 | 975 | err = SET_ERROR(ENOENT); |
428870ff BB |
976 | } else { |
977 | *zpp = zp; | |
978 | } | |
3558fd73 | 979 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
428870ff | 980 | return (err); |
34dc7c2f BB |
981 | } |
982 | ||
983 | int | |
984 | zfs_rezget(znode_t *zp) | |
985 | { | |
3558fd73 | 986 | zfs_sb_t *zsb = ZTOZSB(zp); |
34dc7c2f BB |
987 | dmu_object_info_t doi; |
988 | dmu_buf_t *db; | |
989 | uint64_t obj_num = zp->z_id; | |
428870ff | 990 | uint64_t mode; |
428870ff | 991 | sa_bulk_attr_t bulk[8]; |
34dc7c2f | 992 | int err; |
428870ff BB |
993 | int count = 0; |
994 | uint64_t gen; | |
34dc7c2f | 995 | |
3558fd73 | 996 | ZFS_OBJ_HOLD_ENTER(zsb, obj_num); |
34dc7c2f | 997 | |
428870ff BB |
998 | mutex_enter(&zp->z_acl_lock); |
999 | if (zp->z_acl_cached) { | |
1000 | zfs_acl_free(zp->z_acl_cached); | |
1001 | zp->z_acl_cached = NULL; | |
1002 | } | |
428870ff | 1003 | mutex_exit(&zp->z_acl_lock); |
7b3e34ba BB |
1004 | |
1005 | rw_enter(&zp->z_xattr_lock, RW_WRITER); | |
1006 | if (zp->z_xattr_cached) { | |
1007 | nvlist_free(zp->z_xattr_cached); | |
1008 | zp->z_xattr_cached = NULL; | |
1009 | } | |
1010 | ||
1011 | if (zp->z_xattr_parent) { | |
2d501583 | 1012 | zfs_iput_async(ZTOI(zp->z_xattr_parent)); |
7b3e34ba BB |
1013 | zp->z_xattr_parent = NULL; |
1014 | } | |
1015 | rw_exit(&zp->z_xattr_lock); | |
1016 | ||
428870ff | 1017 | ASSERT(zp->z_sa_hdl == NULL); |
3558fd73 | 1018 | err = sa_buf_hold(zsb->z_os, obj_num, NULL, &db); |
34dc7c2f | 1019 | if (err) { |
3558fd73 | 1020 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
34dc7c2f BB |
1021 | return (err); |
1022 | } | |
1023 | ||
1024 | dmu_object_info_from_db(db, &doi); | |
428870ff BB |
1025 | if (doi.doi_bonus_type != DMU_OT_SA && |
1026 | (doi.doi_bonus_type != DMU_OT_ZNODE || | |
1027 | (doi.doi_bonus_type == DMU_OT_ZNODE && | |
1028 | doi.doi_bonus_size < sizeof (znode_phys_t)))) { | |
1029 | sa_buf_rele(db, NULL); | |
3558fd73 | 1030 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
2e528b49 | 1031 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
1032 | } |
1033 | ||
3558fd73 | 1034 | zfs_znode_sa_init(zsb, zp, db, doi.doi_bonus_type, NULL); |
428870ff BB |
1035 | |
1036 | /* reload cached values */ | |
3558fd73 | 1037 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zsb), NULL, |
428870ff | 1038 | &gen, sizeof (gen)); |
3558fd73 | 1039 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zsb), NULL, |
428870ff | 1040 | &zp->z_size, sizeof (zp->z_size)); |
3558fd73 | 1041 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_LINKS(zsb), NULL, |
428870ff | 1042 | &zp->z_links, sizeof (zp->z_links)); |
3558fd73 | 1043 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zsb), NULL, |
428870ff | 1044 | &zp->z_pflags, sizeof (zp->z_pflags)); |
3558fd73 | 1045 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zsb), NULL, |
428870ff | 1046 | &zp->z_atime, sizeof (zp->z_atime)); |
3558fd73 | 1047 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zsb), NULL, |
572e2857 | 1048 | &zp->z_uid, sizeof (zp->z_uid)); |
3558fd73 | 1049 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zsb), NULL, |
572e2857 | 1050 | &zp->z_gid, sizeof (zp->z_gid)); |
3558fd73 | 1051 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zsb), NULL, |
428870ff BB |
1052 | &mode, sizeof (mode)); |
1053 | ||
428870ff BB |
1054 | if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count)) { |
1055 | zfs_znode_dmu_fini(zp); | |
3558fd73 | 1056 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
2e528b49 | 1057 | return (SET_ERROR(EIO)); |
428870ff BB |
1058 | } |
1059 | ||
572e2857 BB |
1060 | zp->z_mode = mode; |
1061 | ||
428870ff BB |
1062 | if (gen != zp->z_gen) { |
1063 | zfs_znode_dmu_fini(zp); | |
3558fd73 | 1064 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
2e528b49 | 1065 | return (SET_ERROR(EIO)); |
34dc7c2f BB |
1066 | } |
1067 | ||
428870ff | 1068 | zp->z_unlinked = (zp->z_links == 0); |
34dc7c2f | 1069 | zp->z_blksz = doi.doi_data_block_size; |
7b3e34ba | 1070 | zfs_inode_update(zp); |
34dc7c2f | 1071 | |
3558fd73 | 1072 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
34dc7c2f BB |
1073 | |
1074 | return (0); | |
1075 | } | |
1076 | ||
1077 | void | |
1078 | zfs_znode_delete(znode_t *zp, dmu_tx_t *tx) | |
1079 | { | |
3558fd73 BB |
1080 | zfs_sb_t *zsb = ZTOZSB(zp); |
1081 | objset_t *os = zsb->z_os; | |
34dc7c2f | 1082 | uint64_t obj = zp->z_id; |
572e2857 | 1083 | uint64_t acl_obj = zfs_external_acl(zp); |
34dc7c2f | 1084 | |
3558fd73 | 1085 | ZFS_OBJ_HOLD_ENTER(zsb, obj); |
572e2857 BB |
1086 | if (acl_obj) { |
1087 | VERIFY(!zp->z_is_sa); | |
b128c09f | 1088 | VERIFY(0 == dmu_object_free(os, acl_obj, tx)); |
572e2857 | 1089 | } |
b128c09f | 1090 | VERIFY(0 == dmu_object_free(os, obj, tx)); |
34dc7c2f | 1091 | zfs_znode_dmu_fini(zp); |
3558fd73 | 1092 | ZFS_OBJ_HOLD_EXIT(zsb, obj); |
34dc7c2f BB |
1093 | } |
1094 | ||
1095 | void | |
1096 | zfs_zinactive(znode_t *zp) | |
1097 | { | |
3558fd73 | 1098 | zfs_sb_t *zsb = ZTOZSB(zp); |
34dc7c2f | 1099 | uint64_t z_id = zp->z_id; |
d6bd8eaa | 1100 | boolean_t drop_mutex = 0; |
34dc7c2f | 1101 | |
428870ff | 1102 | ASSERT(zp->z_sa_hdl); |
34dc7c2f BB |
1103 | |
1104 | /* | |
d6bd8eaa BB |
1105 | * Don't allow a zfs_zget() while were trying to release this znode. |
1106 | * | |
1107 | * Linux allows direct memory reclaim which means that any KM_SLEEP | |
1108 | * allocation may trigger inode eviction. This can lead to a deadlock | |
1109 | * through the ->shrink_icache_memory()->evict()->zfs_inactive()-> | |
1110 | * zfs_zinactive() call path. To avoid this deadlock the process | |
1111 | * must not reacquire the mutex when it is already holding it. | |
34dc7c2f | 1112 | */ |
d6bd8eaa BB |
1113 | if (!ZFS_OBJ_HOLD_OWNED(zsb, z_id)) { |
1114 | ZFS_OBJ_HOLD_ENTER(zsb, z_id); | |
1115 | drop_mutex = 1; | |
1116 | } | |
1117 | ||
34dc7c2f | 1118 | mutex_enter(&zp->z_lock); |
34dc7c2f BB |
1119 | |
1120 | /* | |
1121 | * If this was the last reference to a file with no links, | |
1122 | * remove the file from the file system. | |
1123 | */ | |
1124 | if (zp->z_unlinked) { | |
1125 | mutex_exit(&zp->z_lock); | |
d6bd8eaa BB |
1126 | |
1127 | if (drop_mutex) | |
1128 | ZFS_OBJ_HOLD_EXIT(zsb, z_id); | |
1129 | ||
34dc7c2f BB |
1130 | zfs_rmnode(zp); |
1131 | return; | |
1132 | } | |
428870ff | 1133 | |
34dc7c2f BB |
1134 | mutex_exit(&zp->z_lock); |
1135 | zfs_znode_dmu_fini(zp); | |
d6bd8eaa BB |
1136 | |
1137 | if (drop_mutex) | |
1138 | ZFS_OBJ_HOLD_EXIT(zsb, z_id); | |
34dc7c2f BB |
1139 | } |
1140 | ||
6d111134 TC |
1141 | static inline int |
1142 | zfs_compare_timespec(struct timespec *t1, struct timespec *t2) | |
1143 | { | |
1144 | if (t1->tv_sec < t2->tv_sec) | |
1145 | return (-1); | |
1146 | ||
1147 | if (t1->tv_sec > t2->tv_sec) | |
1148 | return (1); | |
1149 | ||
1150 | return (t1->tv_nsec - t2->tv_nsec); | |
1151 | } | |
1152 | ||
1153 | /* | |
1154 | * Determine whether the znode's atime must be updated. The logic mostly | |
1155 | * duplicates the Linux kernel's relatime_need_update() functionality. | |
1156 | * This function is only called if the underlying filesystem actually has | |
1157 | * atime updates enabled. | |
1158 | */ | |
1159 | static inline boolean_t | |
1160 | zfs_atime_need_update(znode_t *zp, timestruc_t *now) | |
1161 | { | |
1162 | if (!ZTOZSB(zp)->z_relatime) | |
1163 | return (B_TRUE); | |
1164 | ||
1165 | /* | |
1166 | * In relatime mode, only update the atime if the previous atime | |
1167 | * is earlier than either the ctime or mtime or if at least a day | |
1168 | * has passed since the last update of atime. | |
1169 | */ | |
1170 | if (zfs_compare_timespec(&ZTOI(zp)->i_mtime, &ZTOI(zp)->i_atime) >= 0) | |
1171 | return (B_TRUE); | |
1172 | ||
1173 | if (zfs_compare_timespec(&ZTOI(zp)->i_ctime, &ZTOI(zp)->i_atime) >= 0) | |
1174 | return (B_TRUE); | |
1175 | ||
1176 | if ((long)now->tv_sec - ZTOI(zp)->i_atime.tv_sec >= 24*60*60) | |
1177 | return (B_TRUE); | |
1178 | ||
1179 | return (B_FALSE); | |
1180 | } | |
1181 | ||
1182 | /* | |
1183 | * Prepare to update znode time stamps. | |
1184 | * | |
1185 | * IN: zp - znode requiring timestamp update | |
1186 | * flag - ATTR_MTIME, ATTR_CTIME, ATTR_ATIME flags | |
1187 | * have_tx - true of caller is creating a new txg | |
1188 | * | |
1189 | * OUT: zp - new atime (via underlying inode's i_atime) | |
1190 | * mtime - new mtime | |
1191 | * ctime - new ctime | |
1192 | * | |
1193 | * NOTE: The arguments are somewhat redundant. The following condition | |
1194 | * is always true: | |
1195 | * | |
1196 | * have_tx == !(flag & ATTR_ATIME) | |
1197 | */ | |
34dc7c2f | 1198 | void |
428870ff BB |
1199 | zfs_tstamp_update_setup(znode_t *zp, uint_t flag, uint64_t mtime[2], |
1200 | uint64_t ctime[2], boolean_t have_tx) | |
34dc7c2f BB |
1201 | { |
1202 | timestruc_t now; | |
1203 | ||
6d111134 | 1204 | ASSERT(have_tx == !(flag & ATTR_ATIME)); |
34dc7c2f BB |
1205 | gethrestime(&now); |
1206 | ||
6d111134 TC |
1207 | /* |
1208 | * NOTE: The following test intentionally does not update z_atime_dirty | |
1209 | * in the case where an ATIME update has been requested but for which | |
1210 | * the update is omitted due to relatime logic. The rationale being | |
1211 | * that if the flag was set somewhere else, we should leave it alone | |
1212 | * here. | |
1213 | */ | |
1214 | if (flag & ATTR_ATIME) { | |
1215 | if (zfs_atime_need_update(zp, &now)) { | |
1216 | ZFS_TIME_ENCODE(&now, zp->z_atime); | |
1217 | ZTOI(zp)->i_atime.tv_sec = zp->z_atime[0]; | |
1218 | ZTOI(zp)->i_atime.tv_nsec = zp->z_atime[1]; | |
1219 | zp->z_atime_dirty = 1; | |
1220 | } | |
1221 | } else { | |
34dc7c2f BB |
1222 | zp->z_atime_dirty = 0; |
1223 | zp->z_seq++; | |
428870ff | 1224 | } |
34dc7c2f | 1225 | |
3558fd73 | 1226 | if (flag & ATTR_MTIME) { |
428870ff | 1227 | ZFS_TIME_ENCODE(&now, mtime); |
3558fd73 | 1228 | if (ZTOZSB(zp)->z_use_fuids) { |
428870ff BB |
1229 | zp->z_pflags |= (ZFS_ARCHIVE | |
1230 | ZFS_AV_MODIFIED); | |
1231 | } | |
34dc7c2f BB |
1232 | } |
1233 | ||
3558fd73 | 1234 | if (flag & ATTR_CTIME) { |
428870ff | 1235 | ZFS_TIME_ENCODE(&now, ctime); |
3558fd73 | 1236 | if (ZTOZSB(zp)->z_use_fuids) |
428870ff | 1237 | zp->z_pflags |= ZFS_ARCHIVE; |
34dc7c2f BB |
1238 | } |
1239 | } | |
1240 | ||
34dc7c2f BB |
1241 | /* |
1242 | * Grow the block size for a file. | |
1243 | * | |
1244 | * IN: zp - znode of file to free data in. | |
1245 | * size - requested block size | |
1246 | * tx - open transaction. | |
1247 | * | |
1248 | * NOTE: this function assumes that the znode is write locked. | |
1249 | */ | |
1250 | void | |
1251 | zfs_grow_blocksize(znode_t *zp, uint64_t size, dmu_tx_t *tx) | |
1252 | { | |
1253 | int error; | |
1254 | u_longlong_t dummy; | |
1255 | ||
1256 | if (size <= zp->z_blksz) | |
1257 | return; | |
1258 | /* | |
1259 | * If the file size is already greater than the current blocksize, | |
1260 | * we will not grow. If there is more than one block in a file, | |
1261 | * the blocksize cannot change. | |
1262 | */ | |
428870ff | 1263 | if (zp->z_blksz && zp->z_size > zp->z_blksz) |
34dc7c2f BB |
1264 | return; |
1265 | ||
3558fd73 | 1266 | error = dmu_object_set_blocksize(ZTOZSB(zp)->z_os, zp->z_id, |
34dc7c2f | 1267 | size, 0, tx); |
428870ff | 1268 | |
34dc7c2f BB |
1269 | if (error == ENOTSUP) |
1270 | return; | |
c99c9001 | 1271 | ASSERT0(error); |
34dc7c2f BB |
1272 | |
1273 | /* What blocksize did we actually get? */ | |
428870ff | 1274 | dmu_object_size_from_db(sa_get_db(zp->z_sa_hdl), &zp->z_blksz, &dummy); |
34dc7c2f BB |
1275 | } |
1276 | ||
34dc7c2f | 1277 | /* |
b128c09f | 1278 | * Increase the file length |
34dc7c2f BB |
1279 | * |
1280 | * IN: zp - znode of file to free data in. | |
b128c09f | 1281 | * end - new end-of-file |
34dc7c2f | 1282 | * |
d3cc8b15 | 1283 | * RETURN: 0 on success, error code on failure |
34dc7c2f | 1284 | */ |
b128c09f BB |
1285 | static int |
1286 | zfs_extend(znode_t *zp, uint64_t end) | |
34dc7c2f | 1287 | { |
3558fd73 | 1288 | zfs_sb_t *zsb = ZTOZSB(zp); |
b128c09f | 1289 | dmu_tx_t *tx; |
34dc7c2f | 1290 | rl_t *rl; |
b128c09f | 1291 | uint64_t newblksz; |
34dc7c2f BB |
1292 | int error; |
1293 | ||
34dc7c2f | 1294 | /* |
b128c09f | 1295 | * We will change zp_size, lock the whole file. |
34dc7c2f | 1296 | */ |
b128c09f | 1297 | rl = zfs_range_lock(zp, 0, UINT64_MAX, RL_WRITER); |
34dc7c2f BB |
1298 | |
1299 | /* | |
1300 | * Nothing to do if file already at desired length. | |
1301 | */ | |
428870ff | 1302 | if (end <= zp->z_size) { |
34dc7c2f BB |
1303 | zfs_range_unlock(rl); |
1304 | return (0); | |
1305 | } | |
3558fd73 | 1306 | tx = dmu_tx_create(zsb->z_os); |
428870ff BB |
1307 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); |
1308 | zfs_sa_upgrade_txholds(tx, zp); | |
b128c09f | 1309 | if (end > zp->z_blksz && |
3558fd73 | 1310 | (!ISP2(zp->z_blksz) || zp->z_blksz < zsb->z_max_blksz)) { |
34dc7c2f BB |
1311 | /* |
1312 | * We are growing the file past the current block size. | |
1313 | */ | |
3558fd73 | 1314 | if (zp->z_blksz > ZTOZSB(zp)->z_max_blksz) { |
34dc7c2f | 1315 | ASSERT(!ISP2(zp->z_blksz)); |
b128c09f | 1316 | newblksz = MIN(end, SPA_MAXBLOCKSIZE); |
34dc7c2f | 1317 | } else { |
3558fd73 | 1318 | newblksz = MIN(end, ZTOZSB(zp)->z_max_blksz); |
34dc7c2f | 1319 | } |
b128c09f BB |
1320 | dmu_tx_hold_write(tx, zp->z_id, 0, newblksz); |
1321 | } else { | |
1322 | newblksz = 0; | |
34dc7c2f BB |
1323 | } |
1324 | ||
384f8a09 | 1325 | error = dmu_tx_assign(tx, TXG_WAIT); |
34dc7c2f | 1326 | if (error) { |
34dc7c2f BB |
1327 | dmu_tx_abort(tx); |
1328 | zfs_range_unlock(rl); | |
1329 | return (error); | |
1330 | } | |
1331 | ||
b128c09f BB |
1332 | if (newblksz) |
1333 | zfs_grow_blocksize(zp, newblksz, tx); | |
34dc7c2f | 1334 | |
428870ff BB |
1335 | zp->z_size = end; |
1336 | ||
3558fd73 | 1337 | VERIFY(0 == sa_update(zp->z_sa_hdl, SA_ZPL_SIZE(ZTOZSB(zp)), |
428870ff | 1338 | &zp->z_size, sizeof (zp->z_size), tx)); |
34dc7c2f | 1339 | |
b128c09f | 1340 | zfs_range_unlock(rl); |
34dc7c2f | 1341 | |
b128c09f | 1342 | dmu_tx_commit(tx); |
34dc7c2f | 1343 | |
b128c09f BB |
1344 | return (0); |
1345 | } | |
1346 | ||
223df016 TC |
1347 | /* |
1348 | * zfs_zero_partial_page - Modeled after update_pages() but | |
1349 | * with different arguments and semantics for use by zfs_freesp(). | |
1350 | * | |
1351 | * Zeroes a piece of a single page cache entry for zp at offset | |
1352 | * start and length len. | |
1353 | * | |
1354 | * Caller must acquire a range lock on the file for the region | |
1355 | * being zeroed in order that the ARC and page cache stay in sync. | |
1356 | */ | |
1357 | static void | |
1358 | zfs_zero_partial_page(znode_t *zp, uint64_t start, uint64_t len) | |
1359 | { | |
1360 | struct address_space *mp = ZTOI(zp)->i_mapping; | |
1361 | struct page *pp; | |
1362 | int64_t off; | |
1363 | void *pb; | |
1364 | ||
1365 | ASSERT((start & PAGE_CACHE_MASK) == | |
1366 | ((start + len - 1) & PAGE_CACHE_MASK)); | |
1367 | ||
1368 | off = start & (PAGE_CACHE_SIZE - 1); | |
1369 | start &= PAGE_CACHE_MASK; | |
1370 | ||
1371 | pp = find_lock_page(mp, start >> PAGE_CACHE_SHIFT); | |
1372 | if (pp) { | |
1373 | if (mapping_writably_mapped(mp)) | |
1374 | flush_dcache_page(pp); | |
1375 | ||
1376 | pb = kmap(pp); | |
1377 | bzero(pb + off, len); | |
1378 | kunmap(pp); | |
1379 | ||
1380 | if (mapping_writably_mapped(mp)) | |
1381 | flush_dcache_page(pp); | |
1382 | ||
1383 | mark_page_accessed(pp); | |
1384 | SetPageUptodate(pp); | |
1385 | ClearPageError(pp); | |
1386 | unlock_page(pp); | |
1387 | page_cache_release(pp); | |
1388 | } | |
1389 | } | |
1390 | ||
b128c09f BB |
1391 | /* |
1392 | * Free space in a file. | |
1393 | * | |
1394 | * IN: zp - znode of file to free data in. | |
1395 | * off - start of section to free. | |
1396 | * len - length of section to free. | |
1397 | * | |
d3cc8b15 | 1398 | * RETURN: 0 on success, error code on failure |
b128c09f BB |
1399 | */ |
1400 | static int | |
1401 | zfs_free_range(znode_t *zp, uint64_t off, uint64_t len) | |
1402 | { | |
3558fd73 | 1403 | zfs_sb_t *zsb = ZTOZSB(zp); |
b128c09f BB |
1404 | rl_t *rl; |
1405 | int error; | |
1406 | ||
1407 | /* | |
1408 | * Lock the range being freed. | |
1409 | */ | |
1410 | rl = zfs_range_lock(zp, off, len, RL_WRITER); | |
1411 | ||
1412 | /* | |
1413 | * Nothing to do if file already at desired length. | |
1414 | */ | |
428870ff | 1415 | if (off >= zp->z_size) { |
b128c09f BB |
1416 | zfs_range_unlock(rl); |
1417 | return (0); | |
34dc7c2f BB |
1418 | } |
1419 | ||
428870ff BB |
1420 | if (off + len > zp->z_size) |
1421 | len = zp->z_size - off; | |
b128c09f | 1422 | |
3558fd73 | 1423 | error = dmu_free_long_range(zsb->z_os, zp->z_id, off, len); |
b128c09f | 1424 | |
223df016 TC |
1425 | /* |
1426 | * Zero partial page cache entries. This must be done under a | |
1427 | * range lock in order to keep the ARC and page cache in sync. | |
1428 | */ | |
1429 | if (zp->z_is_mapped) { | |
1430 | loff_t first_page, last_page, page_len; | |
1431 | loff_t first_page_offset, last_page_offset; | |
1432 | ||
1433 | /* first possible full page in hole */ | |
1434 | first_page = (off + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT; | |
1435 | /* last page of hole */ | |
1436 | last_page = (off + len) >> PAGE_CACHE_SHIFT; | |
1437 | ||
1438 | /* offset of first_page */ | |
1439 | first_page_offset = first_page << PAGE_CACHE_SHIFT; | |
1440 | /* offset of last_page */ | |
1441 | last_page_offset = last_page << PAGE_CACHE_SHIFT; | |
1442 | ||
cb08f063 TC |
1443 | /* truncate whole pages */ |
1444 | if (last_page_offset > first_page_offset) { | |
1445 | truncate_inode_pages_range(ZTOI(zp)->i_mapping, | |
1446 | first_page_offset, last_page_offset - 1); | |
1447 | } | |
1448 | ||
1449 | /* truncate sub-page ranges */ | |
223df016 TC |
1450 | if (first_page > last_page) { |
1451 | /* entire punched area within a single page */ | |
1452 | zfs_zero_partial_page(zp, off, len); | |
1453 | } else { | |
1454 | /* beginning of punched area at the end of a page */ | |
1455 | page_len = first_page_offset - off; | |
1456 | if (page_len > 0) | |
1457 | zfs_zero_partial_page(zp, off, page_len); | |
1458 | ||
1459 | /* end of punched area at the beginning of a page */ | |
1460 | page_len = off + len - last_page_offset; | |
1461 | if (page_len > 0) | |
1462 | zfs_zero_partial_page(zp, last_page_offset, | |
1463 | page_len); | |
1464 | } | |
1465 | } | |
34dc7c2f BB |
1466 | zfs_range_unlock(rl); |
1467 | ||
b128c09f BB |
1468 | return (error); |
1469 | } | |
1470 | ||
1471 | /* | |
1472 | * Truncate a file | |
1473 | * | |
1474 | * IN: zp - znode of file to free data in. | |
1475 | * end - new end-of-file. | |
1476 | * | |
d3cc8b15 | 1477 | * RETURN: 0 on success, error code on failure |
b128c09f BB |
1478 | */ |
1479 | static int | |
1480 | zfs_trunc(znode_t *zp, uint64_t end) | |
1481 | { | |
3558fd73 | 1482 | zfs_sb_t *zsb = ZTOZSB(zp); |
b128c09f BB |
1483 | dmu_tx_t *tx; |
1484 | rl_t *rl; | |
1485 | int error; | |
572e2857 BB |
1486 | sa_bulk_attr_t bulk[2]; |
1487 | int count = 0; | |
b128c09f BB |
1488 | |
1489 | /* | |
1490 | * We will change zp_size, lock the whole file. | |
1491 | */ | |
1492 | rl = zfs_range_lock(zp, 0, UINT64_MAX, RL_WRITER); | |
1493 | ||
1494 | /* | |
1495 | * Nothing to do if file already at desired length. | |
1496 | */ | |
428870ff | 1497 | if (end >= zp->z_size) { |
b128c09f BB |
1498 | zfs_range_unlock(rl); |
1499 | return (0); | |
1500 | } | |
1501 | ||
3558fd73 | 1502 | error = dmu_free_long_range(zsb->z_os, zp->z_id, end, -1); |
b128c09f BB |
1503 | if (error) { |
1504 | zfs_range_unlock(rl); | |
1505 | return (error); | |
1506 | } | |
3558fd73 | 1507 | tx = dmu_tx_create(zsb->z_os); |
428870ff BB |
1508 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); |
1509 | zfs_sa_upgrade_txholds(tx, zp); | |
7a8f0e80 | 1510 | error = dmu_tx_assign(tx, TXG_WAIT); |
b128c09f | 1511 | if (error) { |
b128c09f BB |
1512 | dmu_tx_abort(tx); |
1513 | zfs_range_unlock(rl); | |
1514 | return (error); | |
1515 | } | |
b128c09f | 1516 | |
428870ff | 1517 | zp->z_size = end; |
3558fd73 | 1518 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zsb), |
572e2857 | 1519 | NULL, &zp->z_size, sizeof (zp->z_size)); |
428870ff | 1520 | |
572e2857 BB |
1521 | if (end == 0) { |
1522 | zp->z_pflags &= ~ZFS_SPARSE; | |
3558fd73 | 1523 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zsb), |
572e2857 BB |
1524 | NULL, &zp->z_pflags, 8); |
1525 | } | |
1526 | VERIFY(sa_bulk_update(zp->z_sa_hdl, bulk, count, tx) == 0); | |
b128c09f | 1527 | |
34dc7c2f BB |
1528 | dmu_tx_commit(tx); |
1529 | ||
d164b209 | 1530 | zfs_range_unlock(rl); |
34dc7c2f BB |
1531 | |
1532 | return (0); | |
1533 | } | |
1534 | ||
b128c09f BB |
1535 | /* |
1536 | * Free space in a file | |
1537 | * | |
1538 | * IN: zp - znode of file to free data in. | |
1539 | * off - start of range | |
1540 | * len - end of range (0 => EOF) | |
1541 | * flag - current file open mode flags. | |
1542 | * log - TRUE if this action should be logged | |
1543 | * | |
d3cc8b15 | 1544 | * RETURN: 0 on success, error code on failure |
b128c09f BB |
1545 | */ |
1546 | int | |
1547 | zfs_freesp(znode_t *zp, uint64_t off, uint64_t len, int flag, boolean_t log) | |
1548 | { | |
b128c09f | 1549 | dmu_tx_t *tx; |
3558fd73 BB |
1550 | zfs_sb_t *zsb = ZTOZSB(zp); |
1551 | zilog_t *zilog = zsb->z_log; | |
428870ff BB |
1552 | uint64_t mode; |
1553 | uint64_t mtime[2], ctime[2]; | |
1554 | sa_bulk_attr_t bulk[3]; | |
1555 | int count = 0; | |
b128c09f BB |
1556 | int error; |
1557 | ||
3558fd73 | 1558 | if ((error = sa_lookup(zp->z_sa_hdl, SA_ZPL_MODE(zsb), &mode, |
428870ff BB |
1559 | sizeof (mode))) != 0) |
1560 | return (error); | |
1561 | ||
1562 | if (off > zp->z_size) { | |
b128c09f BB |
1563 | error = zfs_extend(zp, off+len); |
1564 | if (error == 0 && log) | |
1565 | goto log; | |
223df016 | 1566 | goto out; |
b128c09f BB |
1567 | } |
1568 | ||
b128c09f BB |
1569 | if (len == 0) { |
1570 | error = zfs_trunc(zp, off); | |
1571 | } else { | |
1572 | if ((error = zfs_free_range(zp, off, len)) == 0 && | |
428870ff | 1573 | off + len > zp->z_size) |
b128c09f BB |
1574 | error = zfs_extend(zp, off+len); |
1575 | } | |
1576 | if (error || !log) | |
223df016 | 1577 | goto out; |
b128c09f | 1578 | log: |
3558fd73 | 1579 | tx = dmu_tx_create(zsb->z_os); |
428870ff BB |
1580 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); |
1581 | zfs_sa_upgrade_txholds(tx, zp); | |
384f8a09 | 1582 | error = dmu_tx_assign(tx, TXG_WAIT); |
b128c09f | 1583 | if (error) { |
b128c09f | 1584 | dmu_tx_abort(tx); |
223df016 | 1585 | goto out; |
b128c09f BB |
1586 | } |
1587 | ||
3558fd73 BB |
1588 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zsb), NULL, mtime, 16); |
1589 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zsb), NULL, ctime, 16); | |
1590 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zsb), | |
428870ff BB |
1591 | NULL, &zp->z_pflags, 8); |
1592 | zfs_tstamp_update_setup(zp, CONTENT_MODIFIED, mtime, ctime, B_TRUE); | |
1593 | error = sa_bulk_update(zp->z_sa_hdl, bulk, count, tx); | |
1594 | ASSERT(error == 0); | |
1595 | ||
b128c09f BB |
1596 | zfs_log_truncate(zilog, tx, TX_TRUNCATE, zp, off, len); |
1597 | ||
1598 | dmu_tx_commit(tx); | |
223df016 | 1599 | |
960e08fe | 1600 | zfs_inode_update(zp); |
223df016 TC |
1601 | error = 0; |
1602 | ||
1603 | out: | |
1604 | /* | |
1605 | * Truncate the page cache - for file truncate operations, use | |
1606 | * the purpose-built API for truncations. For punching operations, | |
cb08f063 | 1607 | * the truncation is handled under a range lock in zfs_free_range. |
223df016 TC |
1608 | */ |
1609 | if (len == 0) | |
1610 | truncate_setsize(ZTOI(zp), off); | |
223df016 | 1611 | return (error); |
b128c09f BB |
1612 | } |
1613 | ||
34dc7c2f BB |
1614 | void |
1615 | zfs_create_fs(objset_t *os, cred_t *cr, nvlist_t *zplprops, dmu_tx_t *tx) | |
1616 | { | |
22872ff5 BB |
1617 | struct super_block *sb; |
1618 | zfs_sb_t *zsb; | |
428870ff | 1619 | uint64_t moid, obj, sa_obj, version; |
22872ff5 | 1620 | uint64_t sense = ZFS_CASE_SENSITIVE; |
34dc7c2f BB |
1621 | uint64_t norm = 0; |
1622 | nvpair_t *elem; | |
1623 | int error; | |
22872ff5 BB |
1624 | int i; |
1625 | znode_t *rootzp = NULL; | |
1626 | vattr_t vattr; | |
1627 | znode_t *zp; | |
1628 | zfs_acl_ids_t acl_ids; | |
34dc7c2f BB |
1629 | |
1630 | /* | |
1631 | * First attempt to create master node. | |
1632 | */ | |
1633 | /* | |
1634 | * In an empty objset, there are no blocks to read and thus | |
1635 | * there can be no i/o errors (which we assert below). | |
1636 | */ | |
1637 | moid = MASTER_NODE_OBJ; | |
1638 | error = zap_create_claim(os, moid, DMU_OT_MASTER_NODE, | |
1639 | DMU_OT_NONE, 0, tx); | |
1640 | ASSERT(error == 0); | |
1641 | ||
1642 | /* | |
1643 | * Set starting attributes. | |
1644 | */ | |
428870ff | 1645 | version = zfs_zpl_version_map(spa_version(dmu_objset_spa(os))); |
34dc7c2f BB |
1646 | elem = NULL; |
1647 | while ((elem = nvlist_next_nvpair(zplprops, elem)) != NULL) { | |
1648 | /* For the moment we expect all zpl props to be uint64_ts */ | |
1649 | uint64_t val; | |
1650 | char *name; | |
1651 | ||
1652 | ASSERT(nvpair_type(elem) == DATA_TYPE_UINT64); | |
1653 | VERIFY(nvpair_value_uint64(elem, &val) == 0); | |
1654 | name = nvpair_name(elem); | |
1655 | if (strcmp(name, zfs_prop_to_name(ZFS_PROP_VERSION)) == 0) { | |
9babb374 BB |
1656 | if (val < version) |
1657 | version = val; | |
34dc7c2f BB |
1658 | } else { |
1659 | error = zap_update(os, moid, name, 8, 1, &val, tx); | |
1660 | } | |
1661 | ASSERT(error == 0); | |
1662 | if (strcmp(name, zfs_prop_to_name(ZFS_PROP_NORMALIZE)) == 0) | |
1663 | norm = val; | |
22872ff5 BB |
1664 | else if (strcmp(name, zfs_prop_to_name(ZFS_PROP_CASE)) == 0) |
1665 | sense = val; | |
34dc7c2f BB |
1666 | } |
1667 | ASSERT(version != 0); | |
9babb374 | 1668 | error = zap_update(os, moid, ZPL_VERSION_STR, 8, 1, &version, tx); |
34dc7c2f | 1669 | |
428870ff BB |
1670 | /* |
1671 | * Create zap object used for SA attribute registration | |
1672 | */ | |
1673 | ||
1674 | if (version >= ZPL_VERSION_SA) { | |
1675 | sa_obj = zap_create(os, DMU_OT_SA_MASTER_NODE, | |
1676 | DMU_OT_NONE, 0, tx); | |
1677 | error = zap_add(os, moid, ZFS_SA_ATTRS, 8, 1, &sa_obj, tx); | |
1678 | ASSERT(error == 0); | |
1679 | } else { | |
1680 | sa_obj = 0; | |
1681 | } | |
34dc7c2f BB |
1682 | /* |
1683 | * Create a delete queue. | |
1684 | */ | |
9babb374 | 1685 | obj = zap_create(os, DMU_OT_UNLINKED_SET, DMU_OT_NONE, 0, tx); |
34dc7c2f | 1686 | |
9babb374 | 1687 | error = zap_add(os, moid, ZFS_UNLINKED_SET, 8, 1, &obj, tx); |
34dc7c2f BB |
1688 | ASSERT(error == 0); |
1689 | ||
9babb374 | 1690 | /* |
22872ff5 BB |
1691 | * Create root znode. Create minimal znode/inode/zsb/sb |
1692 | * to allow zfs_mknode to work. | |
9babb374 | 1693 | */ |
22872ff5 BB |
1694 | vattr.va_mask = ATTR_MODE|ATTR_UID|ATTR_GID; |
1695 | vattr.va_mode = S_IFDIR|0755; | |
1696 | vattr.va_uid = crgetuid(cr); | |
1697 | vattr.va_gid = crgetgid(cr); | |
1698 | ||
b8d06fca | 1699 | rootzp = kmem_cache_alloc(znode_cache, KM_PUSHPAGE); |
22872ff5 BB |
1700 | rootzp->z_moved = 0; |
1701 | rootzp->z_unlinked = 0; | |
1702 | rootzp->z_atime_dirty = 0; | |
1703 | rootzp->z_is_sa = USE_SA(version, os); | |
1704 | ||
efcd79a8 | 1705 | zsb = kmem_zalloc(sizeof (zfs_sb_t), KM_PUSHPAGE); |
22872ff5 BB |
1706 | zsb->z_os = os; |
1707 | zsb->z_parent = zsb; | |
1708 | zsb->z_version = version; | |
1709 | zsb->z_use_fuids = USE_FUIDS(version, os); | |
1710 | zsb->z_use_sa = USE_SA(version, os); | |
1711 | zsb->z_norm = norm; | |
1712 | ||
b8d06fca | 1713 | sb = kmem_zalloc(sizeof (struct super_block), KM_PUSHPAGE); |
22872ff5 BB |
1714 | sb->s_fs_info = zsb; |
1715 | ||
1716 | ZTOI(rootzp)->i_sb = sb; | |
1717 | ||
1718 | error = sa_setup(os, sa_obj, zfs_attr_table, ZPL_END, | |
1719 | &zsb->z_attr_table); | |
9babb374 | 1720 | |
22872ff5 | 1721 | ASSERT(error == 0); |
9babb374 | 1722 | |
60101509 | 1723 | /* |
22872ff5 BB |
1724 | * Fold case on file systems that are always or sometimes case |
1725 | * insensitive. | |
60101509 | 1726 | */ |
22872ff5 BB |
1727 | if (sense == ZFS_CASE_INSENSITIVE || sense == ZFS_CASE_MIXED) |
1728 | zsb->z_norm |= U8_TEXTPREP_TOUPPER; | |
60101509 | 1729 | |
22872ff5 BB |
1730 | mutex_init(&zsb->z_znodes_lock, NULL, MUTEX_DEFAULT, NULL); |
1731 | list_create(&zsb->z_all_znodes, sizeof (znode_t), | |
1732 | offsetof(znode_t, z_link_node)); | |
60101509 | 1733 | |
22872ff5 BB |
1734 | for (i = 0; i != ZFS_OBJ_MTX_SZ; i++) |
1735 | mutex_init(&zsb->z_hold_mtx[i], NULL, MUTEX_DEFAULT, NULL); | |
60101509 | 1736 | |
22872ff5 BB |
1737 | VERIFY(0 == zfs_acl_ids_create(rootzp, IS_ROOT_NODE, &vattr, |
1738 | cr, NULL, &acl_ids)); | |
1739 | zfs_mknode(rootzp, &vattr, tx, cr, IS_ROOT_NODE, &zp, &acl_ids); | |
1740 | ASSERT3P(zp, ==, rootzp); | |
1741 | error = zap_add(os, moid, ZFS_ROOT_OBJ, 8, 1, &rootzp->z_id, tx); | |
1742 | ASSERT(error == 0); | |
1743 | zfs_acl_ids_free(&acl_ids); | |
60101509 | 1744 | |
22872ff5 BB |
1745 | atomic_set(&ZTOI(rootzp)->i_count, 0); |
1746 | sa_handle_destroy(rootzp->z_sa_hdl); | |
22872ff5 BB |
1747 | kmem_cache_free(znode_cache, rootzp); |
1748 | ||
1749 | /* | |
1750 | * Create shares directory | |
1751 | */ | |
22872ff5 | 1752 | error = zfs_create_share_dir(zsb, tx); |
9babb374 | 1753 | ASSERT(error == 0); |
428870ff | 1754 | |
22872ff5 BB |
1755 | for (i = 0; i != ZFS_OBJ_MTX_SZ; i++) |
1756 | mutex_destroy(&zsb->z_hold_mtx[i]); | |
2708f716 BB |
1757 | |
1758 | kmem_free(sb, sizeof (struct super_block)); | |
1759 | kmem_free(zsb, sizeof (zfs_sb_t)); | |
34dc7c2f | 1760 | } |
34dc7c2f | 1761 | #endif /* _KERNEL */ |
428870ff | 1762 | |
34dc7c2f | 1763 | static int |
572e2857 BB |
1764 | zfs_sa_setup(objset_t *osp, sa_attr_type_t **sa_table) |
1765 | { | |
1766 | uint64_t sa_obj = 0; | |
1767 | int error; | |
1768 | ||
1769 | error = zap_lookup(osp, MASTER_NODE_OBJ, ZFS_SA_ATTRS, 8, 1, &sa_obj); | |
1770 | if (error != 0 && error != ENOENT) | |
1771 | return (error); | |
1772 | ||
1773 | error = sa_setup(osp, sa_obj, zfs_attr_table, ZPL_END, sa_table); | |
1774 | return (error); | |
1775 | } | |
1776 | ||
1777 | static int | |
1778 | zfs_grab_sa_handle(objset_t *osp, uint64_t obj, sa_handle_t **hdlp, | |
7b8518cb | 1779 | dmu_buf_t **db, void *tag) |
34dc7c2f | 1780 | { |
34dc7c2f | 1781 | dmu_object_info_t doi; |
34dc7c2f | 1782 | int error; |
428870ff | 1783 | |
7b8518cb | 1784 | if ((error = sa_buf_hold(osp, obj, tag, db)) != 0) |
34dc7c2f BB |
1785 | return (error); |
1786 | ||
572e2857 | 1787 | dmu_object_info_from_db(*db, &doi); |
428870ff BB |
1788 | if ((doi.doi_bonus_type != DMU_OT_SA && |
1789 | doi.doi_bonus_type != DMU_OT_ZNODE) || | |
d6320ddb BB |
1790 | (doi.doi_bonus_type == DMU_OT_ZNODE && |
1791 | doi.doi_bonus_size < sizeof (znode_phys_t))) { | |
7b8518cb | 1792 | sa_buf_rele(*db, tag); |
2e528b49 | 1793 | return (SET_ERROR(ENOTSUP)); |
34dc7c2f BB |
1794 | } |
1795 | ||
572e2857 BB |
1796 | error = sa_handle_get(osp, obj, NULL, SA_HDL_PRIVATE, hdlp); |
1797 | if (error != 0) { | |
7b8518cb | 1798 | sa_buf_rele(*db, tag); |
428870ff BB |
1799 | return (error); |
1800 | } | |
1801 | ||
572e2857 BB |
1802 | return (0); |
1803 | } | |
1804 | ||
1805 | void | |
7b8518cb | 1806 | zfs_release_sa_handle(sa_handle_t *hdl, dmu_buf_t *db, void *tag) |
572e2857 BB |
1807 | { |
1808 | sa_handle_destroy(hdl); | |
7b8518cb | 1809 | sa_buf_rele(db, tag); |
572e2857 BB |
1810 | } |
1811 | ||
1812 | /* | |
1813 | * Given an object number, return its parent object number and whether | |
1814 | * or not the object is an extended attribute directory. | |
1815 | */ | |
1816 | static int | |
1817 | zfs_obj_to_pobj(sa_handle_t *hdl, sa_attr_type_t *sa_table, uint64_t *pobjp, | |
1818 | int *is_xattrdir) | |
1819 | { | |
1820 | uint64_t parent; | |
1821 | uint64_t pflags; | |
1822 | uint64_t mode; | |
1823 | sa_bulk_attr_t bulk[3]; | |
1824 | int count = 0; | |
1825 | int error; | |
1826 | ||
1827 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_PARENT], NULL, | |
1828 | &parent, sizeof (parent)); | |
428870ff | 1829 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_FLAGS], NULL, |
572e2857 | 1830 | &pflags, sizeof (pflags)); |
428870ff | 1831 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_MODE], NULL, |
572e2857 | 1832 | &mode, sizeof (mode)); |
428870ff | 1833 | |
572e2857 | 1834 | if ((error = sa_bulk_lookup(hdl, bulk, count)) != 0) |
428870ff | 1835 | return (error); |
572e2857 | 1836 | |
428870ff BB |
1837 | *pobjp = parent; |
1838 | *is_xattrdir = ((pflags & ZFS_XATTR) != 0) && S_ISDIR(mode); | |
34dc7c2f BB |
1839 | |
1840 | return (0); | |
1841 | } | |
1842 | ||
572e2857 BB |
1843 | /* |
1844 | * Given an object number, return some zpl level statistics | |
1845 | */ | |
1846 | static int | |
1847 | zfs_obj_to_stats_impl(sa_handle_t *hdl, sa_attr_type_t *sa_table, | |
1848 | zfs_stat_t *sb) | |
34dc7c2f | 1849 | { |
572e2857 BB |
1850 | sa_bulk_attr_t bulk[4]; |
1851 | int count = 0; | |
1852 | ||
1853 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_MODE], NULL, | |
1854 | &sb->zs_mode, sizeof (sb->zs_mode)); | |
1855 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_GEN], NULL, | |
1856 | &sb->zs_gen, sizeof (sb->zs_gen)); | |
1857 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_LINKS], NULL, | |
1858 | &sb->zs_links, sizeof (sb->zs_links)); | |
1859 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_CTIME], NULL, | |
1860 | &sb->zs_ctime, sizeof (sb->zs_ctime)); | |
1861 | ||
1862 | return (sa_bulk_lookup(hdl, bulk, count)); | |
1863 | } | |
1864 | ||
1865 | static int | |
1866 | zfs_obj_to_path_impl(objset_t *osp, uint64_t obj, sa_handle_t *hdl, | |
1867 | sa_attr_type_t *sa_table, char *buf, int len) | |
1868 | { | |
1869 | sa_handle_t *sa_hdl; | |
1870 | sa_handle_t *prevhdl = NULL; | |
1871 | dmu_buf_t *prevdb = NULL; | |
1872 | dmu_buf_t *sa_db = NULL; | |
34dc7c2f BB |
1873 | char *path = buf + len - 1; |
1874 | int error; | |
1875 | ||
1876 | *path = '\0'; | |
572e2857 | 1877 | sa_hdl = hdl; |
428870ff | 1878 | |
34dc7c2f | 1879 | for (;;) { |
17897ce2 | 1880 | uint64_t pobj = 0; |
34dc7c2f BB |
1881 | char component[MAXNAMELEN + 2]; |
1882 | size_t complen; | |
17897ce2 | 1883 | int is_xattrdir = 0; |
34dc7c2f | 1884 | |
572e2857 | 1885 | if (prevdb) |
7b8518cb | 1886 | zfs_release_sa_handle(prevhdl, prevdb, FTAG); |
572e2857 BB |
1887 | |
1888 | if ((error = zfs_obj_to_pobj(sa_hdl, sa_table, &pobj, | |
1889 | &is_xattrdir)) != 0) | |
34dc7c2f BB |
1890 | break; |
1891 | ||
1892 | if (pobj == obj) { | |
1893 | if (path[0] != '/') | |
1894 | *--path = '/'; | |
1895 | break; | |
1896 | } | |
1897 | ||
1898 | component[0] = '/'; | |
1899 | if (is_xattrdir) { | |
1900 | (void) sprintf(component + 1, "<xattrdir>"); | |
1901 | } else { | |
1902 | error = zap_value_search(osp, pobj, obj, | |
1903 | ZFS_DIRENT_OBJ(-1ULL), component + 1); | |
1904 | if (error != 0) | |
1905 | break; | |
1906 | } | |
1907 | ||
1908 | complen = strlen(component); | |
1909 | path -= complen; | |
1910 | ASSERT(path >= buf); | |
1911 | bcopy(component, path, complen); | |
1912 | obj = pobj; | |
572e2857 BB |
1913 | |
1914 | if (sa_hdl != hdl) { | |
1915 | prevhdl = sa_hdl; | |
1916 | prevdb = sa_db; | |
1917 | } | |
7b8518cb | 1918 | error = zfs_grab_sa_handle(osp, obj, &sa_hdl, &sa_db, FTAG); |
572e2857 BB |
1919 | if (error != 0) { |
1920 | sa_hdl = prevhdl; | |
1921 | sa_db = prevdb; | |
1922 | break; | |
1923 | } | |
1924 | } | |
1925 | ||
1926 | if (sa_hdl != NULL && sa_hdl != hdl) { | |
1927 | ASSERT(sa_db != NULL); | |
7b8518cb | 1928 | zfs_release_sa_handle(sa_hdl, sa_db, FTAG); |
34dc7c2f BB |
1929 | } |
1930 | ||
1931 | if (error == 0) | |
1932 | (void) memmove(buf, path, buf + len - path); | |
428870ff | 1933 | |
34dc7c2f BB |
1934 | return (error); |
1935 | } | |
572e2857 BB |
1936 | |
1937 | int | |
1938 | zfs_obj_to_path(objset_t *osp, uint64_t obj, char *buf, int len) | |
1939 | { | |
1940 | sa_attr_type_t *sa_table; | |
1941 | sa_handle_t *hdl; | |
1942 | dmu_buf_t *db; | |
1943 | int error; | |
1944 | ||
1945 | error = zfs_sa_setup(osp, &sa_table); | |
1946 | if (error != 0) | |
1947 | return (error); | |
1948 | ||
7b8518cb | 1949 | error = zfs_grab_sa_handle(osp, obj, &hdl, &db, FTAG); |
572e2857 BB |
1950 | if (error != 0) |
1951 | return (error); | |
1952 | ||
1953 | error = zfs_obj_to_path_impl(osp, obj, hdl, sa_table, buf, len); | |
1954 | ||
7b8518cb | 1955 | zfs_release_sa_handle(hdl, db, FTAG); |
572e2857 BB |
1956 | return (error); |
1957 | } | |
1958 | ||
1959 | int | |
1960 | zfs_obj_to_stats(objset_t *osp, uint64_t obj, zfs_stat_t *sb, | |
1961 | char *buf, int len) | |
1962 | { | |
1963 | char *path = buf + len - 1; | |
1964 | sa_attr_type_t *sa_table; | |
1965 | sa_handle_t *hdl; | |
1966 | dmu_buf_t *db; | |
1967 | int error; | |
1968 | ||
1969 | *path = '\0'; | |
1970 | ||
1971 | error = zfs_sa_setup(osp, &sa_table); | |
1972 | if (error != 0) | |
1973 | return (error); | |
1974 | ||
7b8518cb | 1975 | error = zfs_grab_sa_handle(osp, obj, &hdl, &db, FTAG); |
572e2857 BB |
1976 | if (error != 0) |
1977 | return (error); | |
1978 | ||
1979 | error = zfs_obj_to_stats_impl(hdl, sa_table, sb); | |
1980 | if (error != 0) { | |
7b8518cb | 1981 | zfs_release_sa_handle(hdl, db, FTAG); |
572e2857 BB |
1982 | return (error); |
1983 | } | |
1984 | ||
1985 | error = zfs_obj_to_path_impl(osp, obj, hdl, sa_table, buf, len); | |
1986 | ||
7b8518cb | 1987 | zfs_release_sa_handle(hdl, db, FTAG); |
572e2857 BB |
1988 | return (error); |
1989 | } | |
c28b2279 BB |
1990 | |
1991 | #if defined(_KERNEL) && defined(HAVE_SPL) | |
1992 | EXPORT_SYMBOL(zfs_create_fs); | |
1993 | EXPORT_SYMBOL(zfs_obj_to_path); | |
1994 | #endif |