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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> |
428870ff | 55 | #include <sys/dnode.h> |
34dc7c2f BB |
56 | #include <sys/fs/zfs.h> |
57 | #include <sys/kidmap.h> | |
3558fd73 | 58 | #include <sys/zpl.h> |
34dc7c2f BB |
59 | #endif /* _KERNEL */ |
60 | ||
61 | #include <sys/dmu.h> | |
62 | #include <sys/refcount.h> | |
63 | #include <sys/stat.h> | |
64 | #include <sys/zap.h> | |
65 | #include <sys/zfs_znode.h> | |
428870ff BB |
66 | #include <sys/sa.h> |
67 | #include <sys/zfs_sa.h> | |
572e2857 | 68 | #include <sys/zfs_stat.h> |
34dc7c2f BB |
69 | |
70 | #include "zfs_prop.h" | |
428870ff | 71 | #include "zfs_comutil.h" |
34dc7c2f | 72 | |
b128c09f BB |
73 | /* |
74 | * Define ZNODE_STATS to turn on statistic gathering. By default, it is only | |
75 | * turned on when DEBUG is also defined. | |
76 | */ | |
77 | #ifdef DEBUG | |
78 | #define ZNODE_STATS | |
79 | #endif /* DEBUG */ | |
80 | ||
81 | #ifdef ZNODE_STATS | |
82 | #define ZNODE_STAT_ADD(stat) ((stat)++) | |
83 | #else | |
84 | #define ZNODE_STAT_ADD(stat) /* nothing */ | |
85 | #endif /* ZNODE_STATS */ | |
86 | ||
34dc7c2f BB |
87 | /* |
88 | * Functions needed for userland (ie: libzpool) are not put under | |
89 | * #ifdef_KERNEL; the rest of the functions have dependencies | |
90 | * (such as VFS logic) that will not compile easily in userland. | |
91 | */ | |
92 | #ifdef _KERNEL | |
9babb374 | 93 | |
b128c09f | 94 | static kmem_cache_t *znode_cache = NULL; |
34dc7c2f | 95 | |
34dc7c2f BB |
96 | /*ARGSUSED*/ |
97 | static int | |
b128c09f | 98 | zfs_znode_cache_constructor(void *buf, void *arg, int kmflags) |
34dc7c2f BB |
99 | { |
100 | znode_t *zp = buf; | |
101 | ||
3558fd73 | 102 | inode_init_once(ZTOI(zp)); |
b128c09f BB |
103 | list_link_init(&zp->z_link_node); |
104 | ||
34dc7c2f | 105 | mutex_init(&zp->z_lock, NULL, MUTEX_DEFAULT, NULL); |
34dc7c2f BB |
106 | rw_init(&zp->z_parent_lock, NULL, RW_DEFAULT, NULL); |
107 | rw_init(&zp->z_name_lock, NULL, RW_DEFAULT, NULL); | |
108 | mutex_init(&zp->z_acl_lock, NULL, MUTEX_DEFAULT, NULL); | |
109 | ||
110 | mutex_init(&zp->z_range_lock, NULL, MUTEX_DEFAULT, NULL); | |
111 | avl_create(&zp->z_range_avl, zfs_range_compare, | |
112 | sizeof (rl_t), offsetof(rl_t, r_node)); | |
113 | ||
b128c09f | 114 | zp->z_dirlocks = NULL; |
45d1cae3 | 115 | zp->z_acl_cached = NULL; |
572e2857 | 116 | zp->z_moved = 0; |
34dc7c2f BB |
117 | return (0); |
118 | } | |
119 | ||
120 | /*ARGSUSED*/ | |
121 | static void | |
b128c09f | 122 | zfs_znode_cache_destructor(void *buf, void *arg) |
34dc7c2f BB |
123 | { |
124 | znode_t *zp = buf; | |
125 | ||
b128c09f | 126 | ASSERT(!list_link_active(&zp->z_link_node)); |
34dc7c2f | 127 | mutex_destroy(&zp->z_lock); |
34dc7c2f BB |
128 | rw_destroy(&zp->z_parent_lock); |
129 | rw_destroy(&zp->z_name_lock); | |
130 | mutex_destroy(&zp->z_acl_lock); | |
131 | avl_destroy(&zp->z_range_avl); | |
132 | mutex_destroy(&zp->z_range_lock); | |
133 | ||
b128c09f | 134 | ASSERT(zp->z_dirlocks == NULL); |
45d1cae3 | 135 | ASSERT(zp->z_acl_cached == NULL); |
b128c09f BB |
136 | } |
137 | ||
34dc7c2f BB |
138 | void |
139 | zfs_znode_init(void) | |
140 | { | |
141 | /* | |
142 | * Initialize zcache | |
143 | */ | |
144 | ASSERT(znode_cache == NULL); | |
145 | znode_cache = kmem_cache_create("zfs_znode_cache", | |
146 | sizeof (znode_t), 0, zfs_znode_cache_constructor, | |
3558fd73 | 147 | zfs_znode_cache_destructor, NULL, NULL, NULL, KMC_KMEM); |
34dc7c2f BB |
148 | } |
149 | ||
150 | void | |
151 | zfs_znode_fini(void) | |
152 | { | |
34dc7c2f BB |
153 | /* |
154 | * Cleanup zcache | |
155 | */ | |
156 | if (znode_cache) | |
157 | kmem_cache_destroy(znode_cache); | |
158 | znode_cache = NULL; | |
159 | } | |
160 | ||
34dc7c2f | 161 | int |
3558fd73 | 162 | zfs_create_share_dir(zfs_sb_t *zsb, dmu_tx_t *tx) |
34dc7c2f | 163 | { |
9ee7fac5 | 164 | #ifdef HAVE_SHARE |
9babb374 BB |
165 | zfs_acl_ids_t acl_ids; |
166 | vattr_t vattr; | |
167 | znode_t *sharezp; | |
168 | vnode_t *vp; | |
169 | znode_t *zp; | |
170 | int error; | |
34dc7c2f | 171 | |
9babb374 | 172 | vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; |
3558fd73 | 173 | vattr.va_mode = S_IFDIR | 0555; |
9babb374 BB |
174 | vattr.va_uid = crgetuid(kcred); |
175 | vattr.va_gid = crgetgid(kcred); | |
34dc7c2f | 176 | |
9babb374 | 177 | sharezp = kmem_cache_alloc(znode_cache, KM_SLEEP); |
572e2857 | 178 | sharezp->z_moved = 0; |
9babb374 BB |
179 | sharezp->z_unlinked = 0; |
180 | sharezp->z_atime_dirty = 0; | |
181 | sharezp->z_zfsvfs = zfsvfs; | |
428870ff | 182 | sharezp->z_is_sa = zfsvfs->z_use_sa; |
34dc7c2f | 183 | |
9babb374 BB |
184 | vp = ZTOV(sharezp); |
185 | vn_reinit(vp); | |
186 | vp->v_type = VDIR; | |
34dc7c2f | 187 | |
9babb374 BB |
188 | VERIFY(0 == zfs_acl_ids_create(sharezp, IS_ROOT_NODE, &vattr, |
189 | kcred, NULL, &acl_ids)); | |
428870ff | 190 | zfs_mknode(sharezp, &vattr, tx, kcred, IS_ROOT_NODE, &zp, &acl_ids); |
9babb374 BB |
191 | ASSERT3P(zp, ==, sharezp); |
192 | ASSERT(!vn_in_dnlc(ZTOV(sharezp))); /* not valid to move */ | |
193 | POINTER_INVALIDATE(&sharezp->z_zfsvfs); | |
194 | error = zap_add(zfsvfs->z_os, MASTER_NODE_OBJ, | |
195 | ZFS_SHARES_DIR, 8, 1, &sharezp->z_id, tx); | |
196 | zfsvfs->z_shares_dir = sharezp->z_id; | |
197 | ||
198 | zfs_acl_ids_free(&acl_ids); | |
3558fd73 | 199 | // ZTOV(sharezp)->v_count = 0; |
428870ff | 200 | sa_handle_destroy(sharezp->z_sa_hdl); |
9babb374 | 201 | kmem_cache_free(znode_cache, sharezp); |
34dc7c2f | 202 | |
9babb374 | 203 | return (error); |
9ee7fac5 BB |
204 | #else |
205 | return (0); | |
206 | #endif /* HAVE_SHARE */ | |
34dc7c2f BB |
207 | } |
208 | ||
209 | /* | |
210 | * define a couple of values we need available | |
211 | * for both 64 and 32 bit environments. | |
212 | */ | |
213 | #ifndef NBITSMINOR64 | |
214 | #define NBITSMINOR64 32 | |
215 | #endif | |
216 | #ifndef MAXMAJ64 | |
217 | #define MAXMAJ64 0xffffffffUL | |
218 | #endif | |
219 | #ifndef MAXMIN64 | |
220 | #define MAXMIN64 0xffffffffUL | |
221 | #endif | |
222 | ||
223 | /* | |
224 | * Create special expldev for ZFS private use. | |
225 | * Can't use standard expldev since it doesn't do | |
226 | * what we want. The standard expldev() takes a | |
227 | * dev32_t in LP64 and expands it to a long dev_t. | |
228 | * We need an interface that takes a dev32_t in ILP32 | |
229 | * and expands it to a long dev_t. | |
230 | */ | |
231 | static uint64_t | |
232 | zfs_expldev(dev_t dev) | |
233 | { | |
234 | #ifndef _LP64 | |
235 | major_t major = (major_t)dev >> NBITSMINOR32 & MAXMAJ32; | |
236 | return (((uint64_t)major << NBITSMINOR64) | | |
237 | ((minor_t)dev & MAXMIN32)); | |
238 | #else | |
239 | return (dev); | |
240 | #endif | |
241 | } | |
242 | ||
34dc7c2f | 243 | static void |
3558fd73 | 244 | zfs_znode_sa_init(zfs_sb_t *zsb, znode_t *zp, |
428870ff | 245 | dmu_buf_t *db, dmu_object_type_t obj_type, sa_handle_t *sa_hdl) |
34dc7c2f | 246 | { |
3558fd73 | 247 | ASSERT(MUTEX_HELD(ZFS_OBJ_MUTEX(zsb, zp->z_id))); |
34dc7c2f BB |
248 | |
249 | mutex_enter(&zp->z_lock); | |
250 | ||
428870ff BB |
251 | ASSERT(zp->z_sa_hdl == NULL); |
252 | ASSERT(zp->z_acl_cached == NULL); | |
253 | if (sa_hdl == NULL) { | |
3558fd73 | 254 | VERIFY(0 == sa_handle_get_from_db(zsb->z_os, db, zp, |
428870ff BB |
255 | SA_HDL_SHARED, &zp->z_sa_hdl)); |
256 | } else { | |
257 | zp->z_sa_hdl = sa_hdl; | |
258 | sa_set_userp(sa_hdl, zp); | |
259 | } | |
34dc7c2f | 260 | |
428870ff | 261 | zp->z_is_sa = (obj_type == DMU_OT_SA) ? B_TRUE : B_FALSE; |
34dc7c2f | 262 | |
34dc7c2f | 263 | mutex_exit(&zp->z_lock); |
34dc7c2f BB |
264 | } |
265 | ||
266 | void | |
267 | zfs_znode_dmu_fini(znode_t *zp) | |
268 | { | |
3558fd73 | 269 | ASSERT(MUTEX_HELD(ZFS_OBJ_MUTEX(ZTOZSB(zp), zp->z_id)) || |
b128c09f | 270 | zp->z_unlinked || |
3558fd73 | 271 | RW_WRITE_HELD(&ZTOZSB(zp)->z_teardown_inactive_lock)); |
428870ff BB |
272 | |
273 | sa_handle_destroy(zp->z_sa_hdl); | |
274 | zp->z_sa_hdl = NULL; | |
34dc7c2f BB |
275 | } |
276 | ||
277 | /* | |
3558fd73 BB |
278 | * Called by new_inode() to allocate a new inode. |
279 | */ | |
280 | int | |
281 | zfs_inode_alloc(struct super_block *sb, struct inode **ip) | |
282 | { | |
283 | znode_t *zp; | |
284 | ||
285 | zp = kmem_cache_alloc(znode_cache, KM_SLEEP); | |
286 | *ip = ZTOI(zp); | |
287 | ||
288 | return (0); | |
289 | } | |
290 | ||
291 | /* | |
292 | * Called in multiple places when an inode should be destroyed. | |
293 | */ | |
294 | void | |
295 | zfs_inode_destroy(struct inode *ip) | |
296 | { | |
297 | znode_t *zp = ITOZ(ip); | |
298 | zfs_sb_t *zsb = ZTOZSB(zp); | |
299 | ||
300 | mutex_enter(&zsb->z_znodes_lock); | |
301 | list_remove(&zsb->z_all_znodes, zp); | |
302 | mutex_exit(&zsb->z_znodes_lock); | |
303 | ||
304 | if (zp->z_acl_cached) { | |
305 | zfs_acl_free(zp->z_acl_cached); | |
306 | zp->z_acl_cached = NULL; | |
307 | } | |
308 | ||
309 | kmem_cache_free(znode_cache, zp); | |
310 | } | |
311 | ||
312 | static void | |
313 | zfs_inode_set_ops(zfs_sb_t *zsb, struct inode *ip) | |
314 | { | |
315 | uint64_t rdev; | |
316 | ||
317 | switch (ip->i_mode & S_IFMT) { | |
318 | case S_IFREG: | |
319 | ip->i_op = &zpl_inode_operations; | |
320 | ip->i_fop = &zpl_file_operations; | |
321 | ip->i_mapping->a_ops = &zpl_address_space_operations; | |
322 | break; | |
323 | ||
324 | case S_IFDIR: | |
325 | ip->i_op = &zpl_dir_inode_operations; | |
326 | ip->i_fop = &zpl_dir_file_operations; | |
327 | ITOZ(ip)->z_zn_prefetch = B_TRUE; | |
328 | break; | |
329 | ||
330 | case S_IFLNK: | |
331 | ip->i_op = &zpl_symlink_inode_operations; | |
332 | break; | |
333 | ||
334 | case S_IFCHR: | |
335 | case S_IFBLK: | |
336 | case S_IFIFO: | |
337 | case S_IFSOCK: | |
338 | VERIFY(sa_lookup(ITOZ(ip)->z_sa_hdl, SA_ZPL_RDEV(zsb), | |
339 | &rdev, sizeof (rdev)) == 0); | |
340 | init_special_inode(ip, ip->i_mode, rdev); | |
341 | ip->i_op = &zpl_special_inode_operations; | |
342 | break; | |
343 | ||
344 | default: | |
345 | printk("ZFS: Invalid mode: 0x%x\n", ip->i_mode); | |
346 | VERIFY(0); | |
347 | } | |
348 | } | |
349 | ||
350 | /* | |
351 | * Construct a znode+inode and initialize. | |
34dc7c2f BB |
352 | * |
353 | * This does not do a call to dmu_set_user() that is | |
354 | * up to the caller to do, in case you don't want to | |
355 | * return the znode | |
356 | */ | |
357 | static znode_t * | |
3558fd73 BB |
358 | zfs_znode_alloc(zfs_sb_t *zsb, dmu_buf_t *db, int blksz, |
359 | dmu_object_type_t obj_type, uint64_t obj, sa_handle_t *hdl) | |
34dc7c2f BB |
360 | { |
361 | znode_t *zp; | |
3558fd73 | 362 | struct inode *ip; |
428870ff | 363 | uint64_t parent; |
428870ff BB |
364 | sa_bulk_attr_t bulk[9]; |
365 | int count = 0; | |
34dc7c2f | 366 | |
3558fd73 | 367 | ASSERT(zsb != NULL); |
34dc7c2f | 368 | |
3558fd73 BB |
369 | ip = new_inode(zsb->z_sb); |
370 | if (ip == NULL) | |
371 | return (NULL); | |
7304b6e5 | 372 | |
3558fd73 | 373 | zp = ITOZ(ip); |
34dc7c2f | 374 | ASSERT(zp->z_dirlocks == NULL); |
572e2857 | 375 | zp->z_moved = 0; |
428870ff | 376 | zp->z_sa_hdl = NULL; |
34dc7c2f BB |
377 | zp->z_unlinked = 0; |
378 | zp->z_atime_dirty = 0; | |
379 | zp->z_mapcnt = 0; | |
34dc7c2f BB |
380 | zp->z_id = db->db_object; |
381 | zp->z_blksz = blksz; | |
382 | zp->z_seq = 0x7A4653; | |
383 | zp->z_sync_cnt = 0; | |
384 | ||
3558fd73 BB |
385 | zfs_znode_sa_init(zsb, zp, db, obj_type, hdl); |
386 | ||
387 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zsb), NULL, &zp->z_mode, 8); | |
388 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zsb), NULL, &zp->z_gen, 8); | |
389 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zsb), NULL, &zp->z_size, 8); | |
390 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_LINKS(zsb), NULL, &zp->z_links, 8); | |
391 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zsb), NULL, | |
428870ff | 392 | &zp->z_pflags, 8); |
3558fd73 | 393 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_PARENT(zsb), NULL, |
7304b6e5 | 394 | &parent, 8); |
3558fd73 | 395 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zsb), NULL, |
428870ff | 396 | &zp->z_atime, 16); |
3558fd73 BB |
397 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zsb), NULL, &zp->z_uid, 8); |
398 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zsb), NULL, &zp->z_gid, 8); | |
428870ff BB |
399 | |
400 | if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count) != 0 || zp->z_gen == 0) { | |
401 | if (hdl == NULL) | |
402 | sa_handle_destroy(zp->z_sa_hdl); | |
34dc7c2f | 403 | |
3558fd73 | 404 | goto error; |
34dc7c2f | 405 | } |
7304b6e5 | 406 | |
3558fd73 BB |
407 | ip->i_ino = obj; |
408 | ip->i_mode = zp->z_mode; | |
409 | ip->i_mtime = ip->i_atime = ip->i_ctime = CURRENT_TIME_SEC; | |
410 | zfs_inode_set_ops(zsb, ip); | |
411 | ||
412 | if (insert_inode_locked(ip)) | |
413 | goto error; | |
7304b6e5 | 414 | |
3558fd73 BB |
415 | mutex_enter(&zsb->z_znodes_lock); |
416 | list_insert_tail(&zsb->z_all_znodes, zp); | |
b128c09f | 417 | membar_producer(); |
3558fd73 | 418 | mutex_exit(&zsb->z_znodes_lock); |
b128c09f | 419 | |
3558fd73 | 420 | unlock_new_inode(ip); |
34dc7c2f | 421 | return (zp); |
3558fd73 BB |
422 | |
423 | error: | |
424 | unlock_new_inode(ip); | |
425 | iput(ip); | |
426 | return NULL; | |
34dc7c2f BB |
427 | } |
428 | ||
960e08fe BB |
429 | /* |
430 | * Update the embedded inode given the znode. We should work toward | |
431 | * eliminating this function as soon as possible by removing values | |
432 | * which are duplicated between the znode and inode. If the generic | |
433 | * inode has the correct field it should be used, and the ZFS code | |
434 | * updated to access the inode. This can be done incrementally. | |
435 | */ | |
436 | void | |
437 | zfs_inode_update(znode_t *zp) | |
438 | { | |
3558fd73 BB |
439 | zfs_sb_t *zsb; |
440 | struct inode *ip; | |
960e08fe BB |
441 | uint32_t blksize; |
442 | uint64_t atime[2], mtime[2], ctime[2]; | |
443 | ||
444 | ASSERT(zp != NULL); | |
3558fd73 BB |
445 | zsb = ZTOZSB(zp); |
446 | ip = ZTOI(zp); | |
447 | ||
448 | sa_lookup(zp->z_sa_hdl, SA_ZPL_ATIME(zsb), &atime, 16); | |
449 | sa_lookup(zp->z_sa_hdl, SA_ZPL_MTIME(zsb), &mtime, 16); | |
450 | sa_lookup(zp->z_sa_hdl, SA_ZPL_CTIME(zsb), &ctime, 16); | |
451 | ||
452 | spin_lock(&ip->i_lock); | |
453 | ip->i_generation = zp->z_gen; | |
454 | ip->i_uid = zp->z_uid; | |
455 | ip->i_gid = zp->z_gid; | |
456 | ip->i_nlink = zp->z_links; | |
457 | ip->i_mode = zp->z_mode; | |
458 | ip->i_blkbits = SPA_MINBLOCKSHIFT; | |
960e08fe | 459 | dmu_object_size_from_db(sa_get_db(zp->z_sa_hdl), &blksize, |
3558fd73 | 460 | (u_longlong_t *)&ip->i_blocks); |
960e08fe | 461 | |
3558fd73 BB |
462 | ZFS_TIME_DECODE(&ip->i_atime, atime); |
463 | ZFS_TIME_DECODE(&ip->i_mtime, mtime); | |
464 | ZFS_TIME_DECODE(&ip->i_ctime, ctime); | |
960e08fe | 465 | |
3558fd73 BB |
466 | i_size_write(ip, zp->z_size); |
467 | spin_unlock(&ip->i_lock); | |
960e08fe BB |
468 | } |
469 | ||
428870ff BB |
470 | static uint64_t empty_xattr; |
471 | static uint64_t pad[4]; | |
472 | static zfs_acl_phys_t acl_phys; | |
34dc7c2f BB |
473 | /* |
474 | * Create a new DMU object to hold a zfs znode. | |
475 | * | |
476 | * IN: dzp - parent directory for new znode | |
477 | * vap - file attributes for new znode | |
478 | * tx - dmu transaction id for zap operations | |
479 | * cr - credentials of caller | |
480 | * flag - flags: | |
481 | * IS_ROOT_NODE - new object will be root | |
482 | * IS_XATTR - new object is an attribute | |
34dc7c2f BB |
483 | * bonuslen - length of bonus buffer |
484 | * setaclp - File/Dir initial ACL | |
485 | * fuidp - Tracks fuid allocation. | |
486 | * | |
487 | * OUT: zpp - allocated znode | |
488 | * | |
489 | */ | |
490 | void | |
491 | zfs_mknode(znode_t *dzp, vattr_t *vap, dmu_tx_t *tx, cred_t *cr, | |
428870ff | 492 | uint_t flag, znode_t **zpp, zfs_acl_ids_t *acl_ids) |
34dc7c2f | 493 | { |
428870ff BB |
494 | uint64_t crtime[2], atime[2], mtime[2], ctime[2]; |
495 | uint64_t mode, size, links, parent, pflags; | |
572e2857 | 496 | uint64_t dzp_pflags = 0; |
428870ff | 497 | uint64_t rdev = 0; |
3558fd73 | 498 | zfs_sb_t *zsb = ZTOZSB(dzp); |
428870ff | 499 | dmu_buf_t *db; |
34dc7c2f BB |
500 | timestruc_t now; |
501 | uint64_t gen, obj; | |
502 | int err; | |
428870ff BB |
503 | int bonuslen; |
504 | sa_handle_t *sa_hdl; | |
505 | dmu_object_type_t obj_type; | |
f30484af | 506 | sa_bulk_attr_t *sa_attrs; |
428870ff BB |
507 | int cnt = 0; |
508 | zfs_acl_locator_cb_t locate = { 0 }; | |
34dc7c2f | 509 | |
3558fd73 | 510 | if (zsb->z_replay) { |
34dc7c2f | 511 | obj = vap->va_nodeid; |
34dc7c2f BB |
512 | now = vap->va_ctime; /* see zfs_replay_create() */ |
513 | gen = vap->va_nblocks; /* ditto */ | |
514 | } else { | |
515 | obj = 0; | |
516 | gethrestime(&now); | |
517 | gen = dmu_tx_get_txg(tx); | |
518 | } | |
519 | ||
3558fd73 | 520 | obj_type = zsb->z_use_sa ? DMU_OT_SA : DMU_OT_ZNODE; |
428870ff BB |
521 | bonuslen = (obj_type == DMU_OT_SA) ? |
522 | DN_MAX_BONUSLEN : ZFS_OLD_ZNODE_PHYS_SIZE; | |
523 | ||
34dc7c2f BB |
524 | /* |
525 | * Create a new DMU object. | |
526 | */ | |
527 | /* | |
528 | * There's currently no mechanism for pre-reading the blocks that will | |
572e2857 | 529 | * be needed to allocate a new object, so we accept the small chance |
34dc7c2f BB |
530 | * that there will be an i/o error and we will fail one of the |
531 | * assertions below. | |
532 | */ | |
3558fd73 BB |
533 | if (S_ISDIR(vap->va_mode)) { |
534 | if (zsb->z_replay) { | |
535 | err = zap_create_claim_norm(zsb->z_os, obj, | |
536 | zsb->z_norm, DMU_OT_DIRECTORY_CONTENTS, | |
428870ff | 537 | obj_type, bonuslen, tx); |
34dc7c2f BB |
538 | ASSERT3U(err, ==, 0); |
539 | } else { | |
3558fd73 BB |
540 | obj = zap_create_norm(zsb->z_os, |
541 | zsb->z_norm, DMU_OT_DIRECTORY_CONTENTS, | |
428870ff | 542 | obj_type, bonuslen, tx); |
34dc7c2f BB |
543 | } |
544 | } else { | |
3558fd73 BB |
545 | if (zsb->z_replay) { |
546 | err = dmu_object_claim(zsb->z_os, obj, | |
34dc7c2f | 547 | DMU_OT_PLAIN_FILE_CONTENTS, 0, |
428870ff | 548 | obj_type, bonuslen, tx); |
34dc7c2f BB |
549 | ASSERT3U(err, ==, 0); |
550 | } else { | |
3558fd73 | 551 | obj = dmu_object_alloc(zsb->z_os, |
34dc7c2f | 552 | DMU_OT_PLAIN_FILE_CONTENTS, 0, |
428870ff | 553 | obj_type, bonuslen, tx); |
34dc7c2f BB |
554 | } |
555 | } | |
34dc7c2f | 556 | |
3558fd73 BB |
557 | ZFS_OBJ_HOLD_ENTER(zsb, obj); |
558 | VERIFY(0 == sa_buf_hold(zsb->z_os, obj, NULL, &db)); | |
34dc7c2f BB |
559 | |
560 | /* | |
561 | * If this is the root, fix up the half-initialized parent pointer | |
562 | * to reference the just-allocated physical data area. | |
563 | */ | |
564 | if (flag & IS_ROOT_NODE) { | |
34dc7c2f | 565 | dzp->z_id = obj; |
428870ff BB |
566 | } else { |
567 | dzp_pflags = dzp->z_pflags; | |
34dc7c2f BB |
568 | } |
569 | ||
570 | /* | |
571 | * If parent is an xattr, so am I. | |
572 | */ | |
428870ff | 573 | if (dzp_pflags & ZFS_XATTR) { |
34dc7c2f | 574 | flag |= IS_XATTR; |
34dc7c2f BB |
575 | } |
576 | ||
3558fd73 | 577 | if (zsb->z_use_fuids) |
428870ff BB |
578 | pflags = ZFS_ARCHIVE | ZFS_AV_MODIFIED; |
579 | else | |
580 | pflags = 0; | |
34dc7c2f | 581 | |
3558fd73 | 582 | if (S_ISDIR(vap->va_mode)) { |
428870ff BB |
583 | size = 2; /* contents ("." and "..") */ |
584 | links = (flag & (IS_ROOT_NODE | IS_XATTR)) ? 2 : 1; | |
585 | } else { | |
586 | size = links = 0; | |
34dc7c2f BB |
587 | } |
588 | ||
d8fd1054 BB |
589 | if (S_ISBLK(vap->va_mode) || S_ISCHR(vap->va_mode) || |
590 | S_ISFIFO(vap->va_mode) || S_ISSOCK(vap->va_mode)) | |
428870ff | 591 | rdev = zfs_expldev(vap->va_rdev); |
428870ff BB |
592 | |
593 | parent = dzp->z_id; | |
594 | mode = acl_ids->z_mode; | |
34dc7c2f | 595 | if (flag & IS_XATTR) |
428870ff | 596 | pflags |= ZFS_XATTR; |
34dc7c2f | 597 | |
428870ff BB |
598 | /* |
599 | * No execs denied will be deterimed when zfs_mode_compute() is called. | |
600 | */ | |
601 | pflags |= acl_ids->z_aclp->z_hints & | |
602 | (ZFS_ACL_TRIVIAL|ZFS_INHERIT_ACE|ZFS_ACL_AUTO_INHERIT| | |
603 | ZFS_ACL_DEFAULTED|ZFS_ACL_PROTECTED); | |
34dc7c2f | 604 | |
428870ff BB |
605 | ZFS_TIME_ENCODE(&now, crtime); |
606 | ZFS_TIME_ENCODE(&now, ctime); | |
34dc7c2f | 607 | |
3558fd73 | 608 | if (vap->va_mask & ATTR_ATIME) { |
428870ff | 609 | ZFS_TIME_ENCODE(&vap->va_atime, atime); |
34dc7c2f | 610 | } else { |
428870ff | 611 | ZFS_TIME_ENCODE(&now, atime); |
34dc7c2f BB |
612 | } |
613 | ||
3558fd73 | 614 | if (vap->va_mask & ATTR_MTIME) { |
428870ff BB |
615 | ZFS_TIME_ENCODE(&vap->va_mtime, mtime); |
616 | } else { | |
617 | ZFS_TIME_ENCODE(&now, mtime); | |
618 | } | |
619 | ||
620 | /* Now add in all of the "SA" attributes */ | |
3558fd73 | 621 | VERIFY(0 == sa_handle_get_from_db(zsb->z_os, db, NULL, SA_HDL_SHARED, |
428870ff BB |
622 | &sa_hdl)); |
623 | ||
624 | /* | |
625 | * Setup the array of attributes to be replaced/set on the new file | |
626 | * | |
627 | * order for DMU_OT_ZNODE is critical since it needs to be constructed | |
628 | * in the old znode_phys_t format. Don't change this ordering | |
629 | */ | |
f30484af | 630 | sa_attrs = kmem_alloc(sizeof(sa_bulk_attr_t) * ZPL_END, KM_SLEEP); |
428870ff BB |
631 | |
632 | if (obj_type == DMU_OT_ZNODE) { | |
3558fd73 | 633 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ATIME(zsb), |
428870ff | 634 | NULL, &atime, 16); |
3558fd73 | 635 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MTIME(zsb), |
428870ff | 636 | NULL, &mtime, 16); |
3558fd73 | 637 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CTIME(zsb), |
428870ff | 638 | NULL, &ctime, 16); |
3558fd73 | 639 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CRTIME(zsb), |
428870ff | 640 | NULL, &crtime, 16); |
3558fd73 | 641 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GEN(zsb), |
428870ff | 642 | NULL, &gen, 8); |
3558fd73 | 643 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MODE(zsb), |
428870ff | 644 | NULL, &mode, 8); |
3558fd73 | 645 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_SIZE(zsb), |
428870ff | 646 | NULL, &size, 8); |
3558fd73 | 647 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PARENT(zsb), |
428870ff | 648 | NULL, &parent, 8); |
34dc7c2f | 649 | } else { |
3558fd73 | 650 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MODE(zsb), |
428870ff | 651 | NULL, &mode, 8); |
3558fd73 | 652 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_SIZE(zsb), |
428870ff | 653 | NULL, &size, 8); |
3558fd73 | 654 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GEN(zsb), |
428870ff | 655 | NULL, &gen, 8); |
3558fd73 BB |
656 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_UID(zsb), |
657 | NULL, &acl_ids->z_fuid, 8); | |
658 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GID(zsb), | |
659 | NULL, &acl_ids->z_fgid, 8); | |
660 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PARENT(zsb), | |
428870ff | 661 | NULL, &parent, 8); |
3558fd73 | 662 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_FLAGS(zsb), |
428870ff | 663 | NULL, &pflags, 8); |
3558fd73 | 664 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ATIME(zsb), |
428870ff | 665 | NULL, &atime, 16); |
3558fd73 | 666 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_MTIME(zsb), |
428870ff | 667 | NULL, &mtime, 16); |
3558fd73 | 668 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CTIME(zsb), |
428870ff | 669 | NULL, &ctime, 16); |
3558fd73 | 670 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_CRTIME(zsb), |
428870ff BB |
671 | NULL, &crtime, 16); |
672 | } | |
673 | ||
3558fd73 | 674 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_LINKS(zsb), NULL, &links, 8); |
428870ff BB |
675 | |
676 | if (obj_type == DMU_OT_ZNODE) { | |
3558fd73 | 677 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_XATTR(zsb), NULL, |
428870ff | 678 | &empty_xattr, 8); |
34dc7c2f | 679 | } |
428870ff | 680 | if (obj_type == DMU_OT_ZNODE || |
d8fd1054 BB |
681 | (S_ISBLK(vap->va_mode) || S_ISCHR(vap->va_mode) || |
682 | S_ISFIFO(vap->va_mode) || S_ISSOCK(vap->va_mode))) { | |
3558fd73 | 683 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_RDEV(zsb), |
428870ff | 684 | NULL, &rdev, 8); |
428870ff BB |
685 | } |
686 | if (obj_type == DMU_OT_ZNODE) { | |
3558fd73 | 687 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_FLAGS(zsb), |
428870ff | 688 | NULL, &pflags, 8); |
3558fd73 | 689 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_UID(zsb), NULL, |
428870ff | 690 | &acl_ids->z_fuid, 8); |
3558fd73 | 691 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_GID(zsb), NULL, |
428870ff | 692 | &acl_ids->z_fgid, 8); |
3558fd73 | 693 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PAD(zsb), NULL, pad, |
428870ff | 694 | sizeof (uint64_t) * 4); |
3558fd73 | 695 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ZNODE_ACL(zsb), NULL, |
428870ff BB |
696 | &acl_phys, sizeof (zfs_acl_phys_t)); |
697 | } else if (acl_ids->z_aclp->z_version >= ZFS_ACL_VERSION_FUID) { | |
3558fd73 | 698 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_DACL_COUNT(zsb), NULL, |
428870ff BB |
699 | &acl_ids->z_aclp->z_acl_count, 8); |
700 | locate.cb_aclp = acl_ids->z_aclp; | |
3558fd73 | 701 | SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_DACL_ACES(zsb), |
428870ff BB |
702 | zfs_acl_data_locator, &locate, |
703 | acl_ids->z_aclp->z_acl_bytes); | |
704 | mode = zfs_mode_compute(mode, acl_ids->z_aclp, &pflags, | |
705 | acl_ids->z_fuid, acl_ids->z_fgid); | |
706 | } | |
707 | ||
708 | VERIFY(sa_replace_all_by_template(sa_hdl, sa_attrs, cnt, tx) == 0); | |
34dc7c2f | 709 | |
34dc7c2f | 710 | if (!(flag & IS_ROOT_NODE)) { |
3558fd73 | 711 | *zpp = zfs_znode_alloc(zsb, db, 0, obj_type, obj, sa_hdl); |
428870ff | 712 | ASSERT(*zpp != NULL); |
3558fd73 BB |
713 | ASSERT(dzp != NULL); |
714 | err = zpl_xattr_security_init(ZTOI(*zpp), ZTOI(dzp)); | |
715 | ASSERT3S(err, ==, 0); | |
34dc7c2f BB |
716 | } else { |
717 | /* | |
718 | * If we are creating the root node, the "parent" we | |
719 | * passed in is the znode for the root. | |
720 | */ | |
721 | *zpp = dzp; | |
428870ff BB |
722 | |
723 | (*zpp)->z_sa_hdl = sa_hdl; | |
34dc7c2f | 724 | } |
428870ff BB |
725 | |
726 | (*zpp)->z_pflags = pflags; | |
727 | (*zpp)->z_mode = mode; | |
728 | ||
428870ff BB |
729 | if (obj_type == DMU_OT_ZNODE || |
730 | acl_ids->z_aclp->z_version < ZFS_ACL_VERSION_FUID) { | |
731 | err = zfs_aclset_common(*zpp, acl_ids->z_aclp, cr, tx); | |
149e873a | 732 | ASSERT3S(err, ==, 0); |
428870ff | 733 | } |
f30484af | 734 | kmem_free(sa_attrs, sizeof(sa_bulk_attr_t) * ZPL_END); |
3558fd73 | 735 | ZFS_OBJ_HOLD_EXIT(zsb, obj); |
34dc7c2f BB |
736 | } |
737 | ||
738 | int | |
3558fd73 | 739 | zfs_zget(zfs_sb_t *zsb, uint64_t obj_num, znode_t **zpp) |
34dc7c2f BB |
740 | { |
741 | dmu_object_info_t doi; | |
742 | dmu_buf_t *db; | |
743 | znode_t *zp; | |
744 | int err; | |
428870ff | 745 | sa_handle_t *hdl; |
34dc7c2f BB |
746 | |
747 | *zpp = NULL; | |
748 | ||
3558fd73 | 749 | ZFS_OBJ_HOLD_ENTER(zsb, obj_num); |
34dc7c2f | 750 | |
3558fd73 | 751 | err = sa_buf_hold(zsb->z_os, obj_num, NULL, &db); |
34dc7c2f | 752 | if (err) { |
3558fd73 | 753 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
34dc7c2f BB |
754 | return (err); |
755 | } | |
756 | ||
757 | dmu_object_info_from_db(db, &doi); | |
428870ff BB |
758 | if (doi.doi_bonus_type != DMU_OT_SA && |
759 | (doi.doi_bonus_type != DMU_OT_ZNODE || | |
760 | (doi.doi_bonus_type == DMU_OT_ZNODE && | |
761 | doi.doi_bonus_size < sizeof (znode_phys_t)))) { | |
762 | sa_buf_rele(db, NULL); | |
3558fd73 | 763 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
34dc7c2f BB |
764 | return (EINVAL); |
765 | } | |
766 | ||
428870ff BB |
767 | hdl = dmu_buf_get_user(db); |
768 | if (hdl != NULL) { | |
769 | zp = sa_get_userdata(hdl); | |
770 | ||
34dc7c2f BB |
771 | |
772 | /* | |
428870ff BB |
773 | * Since "SA" does immediate eviction we |
774 | * should never find a sa handle that doesn't | |
775 | * know about the znode. | |
34dc7c2f | 776 | */ |
428870ff BB |
777 | |
778 | ASSERT3P(zp, !=, NULL); | |
779 | ||
780 | mutex_enter(&zp->z_lock); | |
34dc7c2f BB |
781 | ASSERT3U(zp->z_id, ==, obj_num); |
782 | if (zp->z_unlinked) { | |
783 | err = ENOENT; | |
784 | } else { | |
3558fd73 | 785 | igrab(ZTOI(zp)); |
34dc7c2f BB |
786 | *zpp = zp; |
787 | err = 0; | |
788 | } | |
428870ff | 789 | sa_buf_rele(db, NULL); |
34dc7c2f | 790 | mutex_exit(&zp->z_lock); |
3558fd73 | 791 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
34dc7c2f BB |
792 | return (err); |
793 | } | |
794 | ||
795 | /* | |
3558fd73 | 796 | * Not found create new znode/vnode but only if file exists. |
428870ff BB |
797 | * |
798 | * There is a small window where zfs_vget() could | |
799 | * find this object while a file create is still in | |
800 | * progress. This is checked for in zfs_znode_alloc() | |
801 | * | |
802 | * if zfs_znode_alloc() fails it will drop the hold on the | |
803 | * bonus buffer. | |
34dc7c2f | 804 | */ |
3558fd73 BB |
805 | zp = zfs_znode_alloc(zsb, db, doi.doi_data_block_size, |
806 | doi.doi_bonus_type, obj_num, NULL); | |
428870ff BB |
807 | if (zp == NULL) { |
808 | err = ENOENT; | |
809 | } else { | |
810 | *zpp = zp; | |
811 | } | |
3558fd73 | 812 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
428870ff | 813 | return (err); |
34dc7c2f BB |
814 | } |
815 | ||
816 | int | |
817 | zfs_rezget(znode_t *zp) | |
818 | { | |
3558fd73 | 819 | zfs_sb_t *zsb = ZTOZSB(zp); |
34dc7c2f BB |
820 | dmu_object_info_t doi; |
821 | dmu_buf_t *db; | |
822 | uint64_t obj_num = zp->z_id; | |
428870ff | 823 | uint64_t mode; |
428870ff | 824 | sa_bulk_attr_t bulk[8]; |
34dc7c2f | 825 | int err; |
428870ff BB |
826 | int count = 0; |
827 | uint64_t gen; | |
34dc7c2f | 828 | |
3558fd73 | 829 | ZFS_OBJ_HOLD_ENTER(zsb, obj_num); |
34dc7c2f | 830 | |
428870ff BB |
831 | mutex_enter(&zp->z_acl_lock); |
832 | if (zp->z_acl_cached) { | |
833 | zfs_acl_free(zp->z_acl_cached); | |
834 | zp->z_acl_cached = NULL; | |
835 | } | |
836 | ||
837 | mutex_exit(&zp->z_acl_lock); | |
838 | ASSERT(zp->z_sa_hdl == NULL); | |
3558fd73 | 839 | err = sa_buf_hold(zsb->z_os, obj_num, NULL, &db); |
34dc7c2f | 840 | if (err) { |
3558fd73 | 841 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
34dc7c2f BB |
842 | return (err); |
843 | } | |
844 | ||
845 | dmu_object_info_from_db(db, &doi); | |
428870ff BB |
846 | if (doi.doi_bonus_type != DMU_OT_SA && |
847 | (doi.doi_bonus_type != DMU_OT_ZNODE || | |
848 | (doi.doi_bonus_type == DMU_OT_ZNODE && | |
849 | doi.doi_bonus_size < sizeof (znode_phys_t)))) { | |
850 | sa_buf_rele(db, NULL); | |
3558fd73 | 851 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
34dc7c2f BB |
852 | return (EINVAL); |
853 | } | |
854 | ||
3558fd73 | 855 | zfs_znode_sa_init(zsb, zp, db, doi.doi_bonus_type, NULL); |
428870ff BB |
856 | |
857 | /* reload cached values */ | |
3558fd73 | 858 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zsb), NULL, |
428870ff | 859 | &gen, sizeof (gen)); |
3558fd73 | 860 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zsb), NULL, |
428870ff | 861 | &zp->z_size, sizeof (zp->z_size)); |
3558fd73 | 862 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_LINKS(zsb), NULL, |
428870ff | 863 | &zp->z_links, sizeof (zp->z_links)); |
3558fd73 | 864 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zsb), NULL, |
428870ff | 865 | &zp->z_pflags, sizeof (zp->z_pflags)); |
3558fd73 | 866 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zsb), NULL, |
428870ff | 867 | &zp->z_atime, sizeof (zp->z_atime)); |
3558fd73 | 868 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zsb), NULL, |
572e2857 | 869 | &zp->z_uid, sizeof (zp->z_uid)); |
3558fd73 | 870 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zsb), NULL, |
572e2857 | 871 | &zp->z_gid, sizeof (zp->z_gid)); |
3558fd73 | 872 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zsb), NULL, |
428870ff BB |
873 | &mode, sizeof (mode)); |
874 | ||
428870ff BB |
875 | if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count)) { |
876 | zfs_znode_dmu_fini(zp); | |
3558fd73 | 877 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
428870ff BB |
878 | return (EIO); |
879 | } | |
880 | ||
572e2857 BB |
881 | zp->z_mode = mode; |
882 | ||
428870ff BB |
883 | if (gen != zp->z_gen) { |
884 | zfs_znode_dmu_fini(zp); | |
3558fd73 | 885 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
34dc7c2f BB |
886 | return (EIO); |
887 | } | |
888 | ||
428870ff | 889 | zp->z_unlinked = (zp->z_links == 0); |
34dc7c2f BB |
890 | zp->z_blksz = doi.doi_data_block_size; |
891 | ||
3558fd73 | 892 | ZFS_OBJ_HOLD_EXIT(zsb, obj_num); |
34dc7c2f BB |
893 | |
894 | return (0); | |
895 | } | |
896 | ||
897 | void | |
898 | zfs_znode_delete(znode_t *zp, dmu_tx_t *tx) | |
899 | { | |
3558fd73 BB |
900 | zfs_sb_t *zsb = ZTOZSB(zp); |
901 | objset_t *os = zsb->z_os; | |
34dc7c2f | 902 | uint64_t obj = zp->z_id; |
572e2857 | 903 | uint64_t acl_obj = zfs_external_acl(zp); |
34dc7c2f | 904 | |
3558fd73 | 905 | ZFS_OBJ_HOLD_ENTER(zsb, obj); |
572e2857 BB |
906 | if (acl_obj) { |
907 | VERIFY(!zp->z_is_sa); | |
b128c09f | 908 | VERIFY(0 == dmu_object_free(os, acl_obj, tx)); |
572e2857 | 909 | } |
b128c09f | 910 | VERIFY(0 == dmu_object_free(os, obj, tx)); |
34dc7c2f | 911 | zfs_znode_dmu_fini(zp); |
3558fd73 | 912 | ZFS_OBJ_HOLD_EXIT(zsb, obj); |
34dc7c2f BB |
913 | } |
914 | ||
915 | void | |
916 | zfs_zinactive(znode_t *zp) | |
917 | { | |
3558fd73 | 918 | zfs_sb_t *zsb = ZTOZSB(zp); |
34dc7c2f BB |
919 | uint64_t z_id = zp->z_id; |
920 | ||
428870ff | 921 | ASSERT(zp->z_sa_hdl); |
34dc7c2f BB |
922 | |
923 | /* | |
924 | * Don't allow a zfs_zget() while were trying to release this znode | |
925 | */ | |
3558fd73 | 926 | ZFS_OBJ_HOLD_ENTER(zsb, z_id); |
34dc7c2f | 927 | mutex_enter(&zp->z_lock); |
34dc7c2f BB |
928 | |
929 | /* | |
930 | * If this was the last reference to a file with no links, | |
931 | * remove the file from the file system. | |
932 | */ | |
933 | if (zp->z_unlinked) { | |
934 | mutex_exit(&zp->z_lock); | |
3558fd73 | 935 | ZFS_OBJ_HOLD_EXIT(zsb, z_id); |
34dc7c2f BB |
936 | zfs_rmnode(zp); |
937 | return; | |
938 | } | |
428870ff | 939 | |
34dc7c2f BB |
940 | mutex_exit(&zp->z_lock); |
941 | zfs_znode_dmu_fini(zp); | |
3558fd73 | 942 | ZFS_OBJ_HOLD_EXIT(zsb, z_id); |
34dc7c2f BB |
943 | } |
944 | ||
945 | void | |
428870ff BB |
946 | zfs_tstamp_update_setup(znode_t *zp, uint_t flag, uint64_t mtime[2], |
947 | uint64_t ctime[2], boolean_t have_tx) | |
34dc7c2f BB |
948 | { |
949 | timestruc_t now; | |
950 | ||
34dc7c2f BB |
951 | gethrestime(&now); |
952 | ||
428870ff | 953 | if (have_tx) { /* will sa_bulk_update happen really soon? */ |
34dc7c2f BB |
954 | zp->z_atime_dirty = 0; |
955 | zp->z_seq++; | |
956 | } else { | |
957 | zp->z_atime_dirty = 1; | |
958 | } | |
959 | ||
3558fd73 | 960 | if (flag & ATTR_ATIME) { |
428870ff BB |
961 | ZFS_TIME_ENCODE(&now, zp->z_atime); |
962 | } | |
34dc7c2f | 963 | |
3558fd73 | 964 | if (flag & ATTR_MTIME) { |
428870ff | 965 | ZFS_TIME_ENCODE(&now, mtime); |
3558fd73 | 966 | if (ZTOZSB(zp)->z_use_fuids) { |
428870ff BB |
967 | zp->z_pflags |= (ZFS_ARCHIVE | |
968 | ZFS_AV_MODIFIED); | |
969 | } | |
34dc7c2f BB |
970 | } |
971 | ||
3558fd73 | 972 | if (flag & ATTR_CTIME) { |
428870ff | 973 | ZFS_TIME_ENCODE(&now, ctime); |
3558fd73 | 974 | if (ZTOZSB(zp)->z_use_fuids) |
428870ff | 975 | zp->z_pflags |= ZFS_ARCHIVE; |
34dc7c2f BB |
976 | } |
977 | } | |
978 | ||
34dc7c2f BB |
979 | /* |
980 | * Grow the block size for a file. | |
981 | * | |
982 | * IN: zp - znode of file to free data in. | |
983 | * size - requested block size | |
984 | * tx - open transaction. | |
985 | * | |
986 | * NOTE: this function assumes that the znode is write locked. | |
987 | */ | |
988 | void | |
989 | zfs_grow_blocksize(znode_t *zp, uint64_t size, dmu_tx_t *tx) | |
990 | { | |
991 | int error; | |
992 | u_longlong_t dummy; | |
993 | ||
994 | if (size <= zp->z_blksz) | |
995 | return; | |
996 | /* | |
997 | * If the file size is already greater than the current blocksize, | |
998 | * we will not grow. If there is more than one block in a file, | |
999 | * the blocksize cannot change. | |
1000 | */ | |
428870ff | 1001 | if (zp->z_blksz && zp->z_size > zp->z_blksz) |
34dc7c2f BB |
1002 | return; |
1003 | ||
3558fd73 | 1004 | error = dmu_object_set_blocksize(ZTOZSB(zp)->z_os, zp->z_id, |
34dc7c2f | 1005 | size, 0, tx); |
428870ff | 1006 | |
34dc7c2f BB |
1007 | if (error == ENOTSUP) |
1008 | return; | |
1009 | ASSERT3U(error, ==, 0); | |
1010 | ||
1011 | /* What blocksize did we actually get? */ | |
428870ff | 1012 | dmu_object_size_from_db(sa_get_db(zp->z_sa_hdl), &zp->z_blksz, &dummy); |
34dc7c2f BB |
1013 | } |
1014 | ||
3558fd73 | 1015 | #ifdef HAVE_MMAP |
34dc7c2f BB |
1016 | /* |
1017 | * This is a dummy interface used when pvn_vplist_dirty() should *not* | |
1018 | * be calling back into the fs for a putpage(). E.g.: when truncating | |
1019 | * a file, the pages being "thrown away* don't need to be written out. | |
1020 | */ | |
1021 | /* ARGSUSED */ | |
1022 | static int | |
1023 | zfs_no_putpage(vnode_t *vp, page_t *pp, u_offset_t *offp, size_t *lenp, | |
1024 | int flags, cred_t *cr) | |
1025 | { | |
1026 | ASSERT(0); | |
1027 | return (0); | |
1028 | } | |
3558fd73 | 1029 | #endif /* HAVE_MMAP */ |
34dc7c2f BB |
1030 | |
1031 | /* | |
b128c09f | 1032 | * Increase the file length |
34dc7c2f BB |
1033 | * |
1034 | * IN: zp - znode of file to free data in. | |
b128c09f | 1035 | * end - new end-of-file |
34dc7c2f BB |
1036 | * |
1037 | * RETURN: 0 if success | |
1038 | * error code if failure | |
1039 | */ | |
b128c09f BB |
1040 | static int |
1041 | zfs_extend(znode_t *zp, uint64_t end) | |
34dc7c2f | 1042 | { |
3558fd73 | 1043 | zfs_sb_t *zsb = ZTOZSB(zp); |
b128c09f | 1044 | dmu_tx_t *tx; |
34dc7c2f | 1045 | rl_t *rl; |
b128c09f | 1046 | uint64_t newblksz; |
34dc7c2f BB |
1047 | int error; |
1048 | ||
34dc7c2f | 1049 | /* |
b128c09f | 1050 | * We will change zp_size, lock the whole file. |
34dc7c2f | 1051 | */ |
b128c09f | 1052 | rl = zfs_range_lock(zp, 0, UINT64_MAX, RL_WRITER); |
34dc7c2f BB |
1053 | |
1054 | /* | |
1055 | * Nothing to do if file already at desired length. | |
1056 | */ | |
428870ff | 1057 | if (end <= zp->z_size) { |
34dc7c2f BB |
1058 | zfs_range_unlock(rl); |
1059 | return (0); | |
1060 | } | |
b128c09f | 1061 | top: |
3558fd73 | 1062 | tx = dmu_tx_create(zsb->z_os); |
428870ff BB |
1063 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); |
1064 | zfs_sa_upgrade_txholds(tx, zp); | |
b128c09f | 1065 | if (end > zp->z_blksz && |
3558fd73 | 1066 | (!ISP2(zp->z_blksz) || zp->z_blksz < zsb->z_max_blksz)) { |
34dc7c2f BB |
1067 | /* |
1068 | * We are growing the file past the current block size. | |
1069 | */ | |
3558fd73 | 1070 | if (zp->z_blksz > ZTOZSB(zp)->z_max_blksz) { |
34dc7c2f | 1071 | ASSERT(!ISP2(zp->z_blksz)); |
b128c09f | 1072 | newblksz = MIN(end, SPA_MAXBLOCKSIZE); |
34dc7c2f | 1073 | } else { |
3558fd73 | 1074 | newblksz = MIN(end, ZTOZSB(zp)->z_max_blksz); |
34dc7c2f | 1075 | } |
b128c09f BB |
1076 | dmu_tx_hold_write(tx, zp->z_id, 0, newblksz); |
1077 | } else { | |
1078 | newblksz = 0; | |
34dc7c2f BB |
1079 | } |
1080 | ||
fb5f0bc8 | 1081 | error = dmu_tx_assign(tx, TXG_NOWAIT); |
34dc7c2f | 1082 | if (error) { |
fb5f0bc8 | 1083 | if (error == ERESTART) { |
34dc7c2f | 1084 | dmu_tx_wait(tx); |
b128c09f BB |
1085 | dmu_tx_abort(tx); |
1086 | goto top; | |
1087 | } | |
34dc7c2f BB |
1088 | dmu_tx_abort(tx); |
1089 | zfs_range_unlock(rl); | |
1090 | return (error); | |
1091 | } | |
1092 | ||
b128c09f BB |
1093 | if (newblksz) |
1094 | zfs_grow_blocksize(zp, newblksz, tx); | |
34dc7c2f | 1095 | |
428870ff BB |
1096 | zp->z_size = end; |
1097 | ||
3558fd73 | 1098 | VERIFY(0 == sa_update(zp->z_sa_hdl, SA_ZPL_SIZE(ZTOZSB(zp)), |
428870ff | 1099 | &zp->z_size, sizeof (zp->z_size), tx)); |
34dc7c2f | 1100 | |
b128c09f | 1101 | zfs_range_unlock(rl); |
34dc7c2f | 1102 | |
b128c09f | 1103 | dmu_tx_commit(tx); |
34dc7c2f | 1104 | |
b128c09f BB |
1105 | return (0); |
1106 | } | |
1107 | ||
1108 | /* | |
1109 | * Free space in a file. | |
1110 | * | |
1111 | * IN: zp - znode of file to free data in. | |
1112 | * off - start of section to free. | |
1113 | * len - length of section to free. | |
1114 | * | |
3558fd73 | 1115 | * RETURN: 0 if success |
b128c09f BB |
1116 | * error code if failure |
1117 | */ | |
1118 | static int | |
1119 | zfs_free_range(znode_t *zp, uint64_t off, uint64_t len) | |
1120 | { | |
3558fd73 | 1121 | zfs_sb_t *zsb = ZTOZSB(zp); |
b128c09f BB |
1122 | rl_t *rl; |
1123 | int error; | |
1124 | ||
1125 | /* | |
1126 | * Lock the range being freed. | |
1127 | */ | |
1128 | rl = zfs_range_lock(zp, off, len, RL_WRITER); | |
1129 | ||
1130 | /* | |
1131 | * Nothing to do if file already at desired length. | |
1132 | */ | |
428870ff | 1133 | if (off >= zp->z_size) { |
b128c09f BB |
1134 | zfs_range_unlock(rl); |
1135 | return (0); | |
34dc7c2f BB |
1136 | } |
1137 | ||
428870ff BB |
1138 | if (off + len > zp->z_size) |
1139 | len = zp->z_size - off; | |
b128c09f | 1140 | |
3558fd73 | 1141 | error = dmu_free_long_range(zsb->z_os, zp->z_id, off, len); |
b128c09f | 1142 | |
34dc7c2f BB |
1143 | zfs_range_unlock(rl); |
1144 | ||
b128c09f BB |
1145 | return (error); |
1146 | } | |
1147 | ||
1148 | /* | |
1149 | * Truncate a file | |
1150 | * | |
1151 | * IN: zp - znode of file to free data in. | |
1152 | * end - new end-of-file. | |
1153 | * | |
3558fd73 | 1154 | * RETURN: 0 if success |
b128c09f BB |
1155 | * error code if failure |
1156 | */ | |
1157 | static int | |
1158 | zfs_trunc(znode_t *zp, uint64_t end) | |
1159 | { | |
3558fd73 | 1160 | zfs_sb_t *zsb = ZTOZSB(zp); |
b128c09f BB |
1161 | dmu_tx_t *tx; |
1162 | rl_t *rl; | |
1163 | int error; | |
572e2857 BB |
1164 | sa_bulk_attr_t bulk[2]; |
1165 | int count = 0; | |
b128c09f BB |
1166 | |
1167 | /* | |
1168 | * We will change zp_size, lock the whole file. | |
1169 | */ | |
1170 | rl = zfs_range_lock(zp, 0, UINT64_MAX, RL_WRITER); | |
1171 | ||
1172 | /* | |
1173 | * Nothing to do if file already at desired length. | |
1174 | */ | |
428870ff | 1175 | if (end >= zp->z_size) { |
b128c09f BB |
1176 | zfs_range_unlock(rl); |
1177 | return (0); | |
1178 | } | |
1179 | ||
3558fd73 | 1180 | error = dmu_free_long_range(zsb->z_os, zp->z_id, end, -1); |
b128c09f BB |
1181 | if (error) { |
1182 | zfs_range_unlock(rl); | |
1183 | return (error); | |
1184 | } | |
1185 | top: | |
3558fd73 | 1186 | tx = dmu_tx_create(zsb->z_os); |
428870ff BB |
1187 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); |
1188 | zfs_sa_upgrade_txholds(tx, zp); | |
fb5f0bc8 | 1189 | error = dmu_tx_assign(tx, TXG_NOWAIT); |
b128c09f | 1190 | if (error) { |
fb5f0bc8 | 1191 | if (error == ERESTART) { |
b128c09f BB |
1192 | dmu_tx_wait(tx); |
1193 | dmu_tx_abort(tx); | |
1194 | goto top; | |
1195 | } | |
1196 | dmu_tx_abort(tx); | |
1197 | zfs_range_unlock(rl); | |
1198 | return (error); | |
1199 | } | |
b128c09f | 1200 | |
428870ff | 1201 | zp->z_size = end; |
3558fd73 | 1202 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zsb), |
572e2857 | 1203 | NULL, &zp->z_size, sizeof (zp->z_size)); |
428870ff | 1204 | |
572e2857 BB |
1205 | if (end == 0) { |
1206 | zp->z_pflags &= ~ZFS_SPARSE; | |
3558fd73 | 1207 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zsb), |
572e2857 BB |
1208 | NULL, &zp->z_pflags, 8); |
1209 | } | |
1210 | VERIFY(sa_bulk_update(zp->z_sa_hdl, bulk, count, tx) == 0); | |
b128c09f | 1211 | |
34dc7c2f BB |
1212 | dmu_tx_commit(tx); |
1213 | ||
d164b209 | 1214 | zfs_range_unlock(rl); |
34dc7c2f BB |
1215 | |
1216 | return (0); | |
1217 | } | |
1218 | ||
b128c09f BB |
1219 | /* |
1220 | * Free space in a file | |
1221 | * | |
1222 | * IN: zp - znode of file to free data in. | |
1223 | * off - start of range | |
1224 | * len - end of range (0 => EOF) | |
1225 | * flag - current file open mode flags. | |
1226 | * log - TRUE if this action should be logged | |
1227 | * | |
3558fd73 | 1228 | * RETURN: 0 if success |
b128c09f BB |
1229 | * error code if failure |
1230 | */ | |
1231 | int | |
1232 | zfs_freesp(znode_t *zp, uint64_t off, uint64_t len, int flag, boolean_t log) | |
1233 | { | |
3558fd73 BB |
1234 | #ifdef HAVE_MANDLOCKS |
1235 | struct inode *ip = ZTOI(zp); | |
1236 | #endif /* HAVE_MANDLOCKS */ | |
b128c09f | 1237 | dmu_tx_t *tx; |
3558fd73 BB |
1238 | zfs_sb_t *zsb = ZTOZSB(zp); |
1239 | zilog_t *zilog = zsb->z_log; | |
428870ff BB |
1240 | uint64_t mode; |
1241 | uint64_t mtime[2], ctime[2]; | |
1242 | sa_bulk_attr_t bulk[3]; | |
1243 | int count = 0; | |
b128c09f BB |
1244 | int error; |
1245 | ||
3558fd73 | 1246 | if ((error = sa_lookup(zp->z_sa_hdl, SA_ZPL_MODE(zsb), &mode, |
428870ff BB |
1247 | sizeof (mode))) != 0) |
1248 | return (error); | |
1249 | ||
1250 | if (off > zp->z_size) { | |
b128c09f BB |
1251 | error = zfs_extend(zp, off+len); |
1252 | if (error == 0 && log) | |
1253 | goto log; | |
1254 | else | |
1255 | return (error); | |
1256 | } | |
1257 | ||
3558fd73 | 1258 | #ifdef HAVE_MANDLOCKS |
b128c09f BB |
1259 | /* |
1260 | * Check for any locks in the region to be freed. | |
1261 | */ | |
428870ff | 1262 | |
3558fd73 | 1263 | if (MANDLOCK(ip, (mode_t)mode)) { |
428870ff | 1264 | uint64_t length = (len ? len : zp->z_size - off); |
3558fd73 | 1265 | if (error = chklock(ip, FWRITE, off, length, flag, NULL)) |
b128c09f BB |
1266 | return (error); |
1267 | } | |
3558fd73 | 1268 | #endif /* HAVE_MANDLOCKS */ |
b128c09f BB |
1269 | |
1270 | if (len == 0) { | |
1271 | error = zfs_trunc(zp, off); | |
1272 | } else { | |
1273 | if ((error = zfs_free_range(zp, off, len)) == 0 && | |
428870ff | 1274 | off + len > zp->z_size) |
b128c09f BB |
1275 | error = zfs_extend(zp, off+len); |
1276 | } | |
1277 | if (error || !log) | |
1278 | return (error); | |
1279 | log: | |
3558fd73 | 1280 | tx = dmu_tx_create(zsb->z_os); |
428870ff BB |
1281 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); |
1282 | zfs_sa_upgrade_txholds(tx, zp); | |
fb5f0bc8 | 1283 | error = dmu_tx_assign(tx, TXG_NOWAIT); |
b128c09f | 1284 | if (error) { |
fb5f0bc8 | 1285 | if (error == ERESTART) { |
b128c09f BB |
1286 | dmu_tx_wait(tx); |
1287 | dmu_tx_abort(tx); | |
1288 | goto log; | |
1289 | } | |
1290 | dmu_tx_abort(tx); | |
1291 | return (error); | |
1292 | } | |
1293 | ||
3558fd73 BB |
1294 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zsb), NULL, mtime, 16); |
1295 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zsb), NULL, ctime, 16); | |
1296 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zsb), | |
428870ff BB |
1297 | NULL, &zp->z_pflags, 8); |
1298 | zfs_tstamp_update_setup(zp, CONTENT_MODIFIED, mtime, ctime, B_TRUE); | |
1299 | error = sa_bulk_update(zp->z_sa_hdl, bulk, count, tx); | |
1300 | ASSERT(error == 0); | |
1301 | ||
b128c09f BB |
1302 | zfs_log_truncate(zilog, tx, TX_TRUNCATE, zp, off, len); |
1303 | ||
1304 | dmu_tx_commit(tx); | |
960e08fe | 1305 | zfs_inode_update(zp); |
b128c09f BB |
1306 | return (0); |
1307 | } | |
1308 | ||
34dc7c2f BB |
1309 | void |
1310 | zfs_create_fs(objset_t *os, cred_t *cr, nvlist_t *zplprops, dmu_tx_t *tx) | |
1311 | { | |
428870ff | 1312 | uint64_t moid, obj, sa_obj, version; |
34dc7c2f BB |
1313 | uint64_t norm = 0; |
1314 | nvpair_t *elem; | |
1315 | int error; | |
60101509 BB |
1316 | timestruc_t now; |
1317 | dmu_buf_t *db; | |
1318 | znode_phys_t *pzp; | |
34dc7c2f BB |
1319 | |
1320 | /* | |
1321 | * First attempt to create master node. | |
1322 | */ | |
1323 | /* | |
1324 | * In an empty objset, there are no blocks to read and thus | |
1325 | * there can be no i/o errors (which we assert below). | |
1326 | */ | |
1327 | moid = MASTER_NODE_OBJ; | |
1328 | error = zap_create_claim(os, moid, DMU_OT_MASTER_NODE, | |
1329 | DMU_OT_NONE, 0, tx); | |
1330 | ASSERT(error == 0); | |
1331 | ||
1332 | /* | |
1333 | * Set starting attributes. | |
1334 | */ | |
428870ff | 1335 | version = zfs_zpl_version_map(spa_version(dmu_objset_spa(os))); |
34dc7c2f BB |
1336 | elem = NULL; |
1337 | while ((elem = nvlist_next_nvpair(zplprops, elem)) != NULL) { | |
1338 | /* For the moment we expect all zpl props to be uint64_ts */ | |
1339 | uint64_t val; | |
1340 | char *name; | |
1341 | ||
1342 | ASSERT(nvpair_type(elem) == DATA_TYPE_UINT64); | |
1343 | VERIFY(nvpair_value_uint64(elem, &val) == 0); | |
1344 | name = nvpair_name(elem); | |
1345 | if (strcmp(name, zfs_prop_to_name(ZFS_PROP_VERSION)) == 0) { | |
9babb374 BB |
1346 | if (val < version) |
1347 | version = val; | |
34dc7c2f BB |
1348 | } else { |
1349 | error = zap_update(os, moid, name, 8, 1, &val, tx); | |
1350 | } | |
1351 | ASSERT(error == 0); | |
1352 | if (strcmp(name, zfs_prop_to_name(ZFS_PROP_NORMALIZE)) == 0) | |
1353 | norm = val; | |
34dc7c2f BB |
1354 | } |
1355 | ASSERT(version != 0); | |
9babb374 | 1356 | error = zap_update(os, moid, ZPL_VERSION_STR, 8, 1, &version, tx); |
34dc7c2f | 1357 | |
428870ff BB |
1358 | /* |
1359 | * Create zap object used for SA attribute registration | |
1360 | */ | |
1361 | ||
1362 | if (version >= ZPL_VERSION_SA) { | |
1363 | sa_obj = zap_create(os, DMU_OT_SA_MASTER_NODE, | |
1364 | DMU_OT_NONE, 0, tx); | |
1365 | error = zap_add(os, moid, ZFS_SA_ATTRS, 8, 1, &sa_obj, tx); | |
1366 | ASSERT(error == 0); | |
1367 | } else { | |
1368 | sa_obj = 0; | |
1369 | } | |
34dc7c2f BB |
1370 | /* |
1371 | * Create a delete queue. | |
1372 | */ | |
9babb374 | 1373 | obj = zap_create(os, DMU_OT_UNLINKED_SET, DMU_OT_NONE, 0, tx); |
34dc7c2f | 1374 | |
9babb374 | 1375 | error = zap_add(os, moid, ZFS_UNLINKED_SET, 8, 1, &obj, tx); |
34dc7c2f BB |
1376 | ASSERT(error == 0); |
1377 | ||
9babb374 | 1378 | /* |
eb28321e BB |
1379 | * Create root znode with code free of VFS dependencies. This |
1380 | * is important because without a registered filesystem and super | |
1381 | * block all the required VFS hooks will be missing. The critical | |
1382 | * thing is to just crete the required root znode. | |
9babb374 | 1383 | */ |
60101509 BB |
1384 | obj = zap_create_norm(os, norm, DMU_OT_DIRECTORY_CONTENTS, |
1385 | DMU_OT_ZNODE, sizeof (znode_phys_t), tx); | |
9babb374 | 1386 | |
60101509 BB |
1387 | VERIFY(0 == dmu_bonus_hold(os, obj, FTAG, &db)); |
1388 | dmu_buf_will_dirty(db, tx); | |
9babb374 | 1389 | |
60101509 BB |
1390 | /* |
1391 | * Initialize the znode physical data to zero. | |
1392 | */ | |
1393 | ASSERT(db->db_size >= sizeof (znode_phys_t)); | |
1394 | bzero(db->db_data, db->db_size); | |
1395 | pzp = db->db_data; | |
1396 | ||
1397 | if (USE_FUIDS(version, os)) | |
1398 | pzp->zp_flags = ZFS_ARCHIVE | ZFS_AV_MODIFIED; | |
1399 | ||
1400 | pzp->zp_size = 2; /* "." and ".." */ | |
1401 | pzp->zp_links = 2; | |
1402 | pzp->zp_parent = obj; | |
1403 | pzp->zp_gen = dmu_tx_get_txg(tx); | |
1404 | pzp->zp_mode = S_IFDIR | 0755; | |
1405 | pzp->zp_flags = ZFS_ACL_TRIVIAL; | |
1406 | ||
1407 | gethrestime(&now); | |
1408 | ||
1409 | ZFS_TIME_ENCODE(&now, pzp->zp_crtime); | |
1410 | ZFS_TIME_ENCODE(&now, pzp->zp_ctime); | |
1411 | ZFS_TIME_ENCODE(&now, pzp->zp_atime); | |
1412 | ZFS_TIME_ENCODE(&now, pzp->zp_mtime); | |
1413 | ||
1414 | error = zap_add(os, moid, ZFS_ROOT_OBJ, 8, 1, &obj, tx); | |
9babb374 | 1415 | ASSERT(error == 0); |
428870ff | 1416 | |
60101509 | 1417 | dmu_buf_rele(db, FTAG); |
34dc7c2f BB |
1418 | } |
1419 | ||
1420 | #endif /* _KERNEL */ | |
428870ff | 1421 | |
34dc7c2f | 1422 | static int |
572e2857 BB |
1423 | zfs_sa_setup(objset_t *osp, sa_attr_type_t **sa_table) |
1424 | { | |
1425 | uint64_t sa_obj = 0; | |
1426 | int error; | |
1427 | ||
1428 | error = zap_lookup(osp, MASTER_NODE_OBJ, ZFS_SA_ATTRS, 8, 1, &sa_obj); | |
1429 | if (error != 0 && error != ENOENT) | |
1430 | return (error); | |
1431 | ||
1432 | error = sa_setup(osp, sa_obj, zfs_attr_table, ZPL_END, sa_table); | |
1433 | return (error); | |
1434 | } | |
1435 | ||
1436 | static int | |
1437 | zfs_grab_sa_handle(objset_t *osp, uint64_t obj, sa_handle_t **hdlp, | |
1438 | dmu_buf_t **db) | |
34dc7c2f | 1439 | { |
34dc7c2f | 1440 | dmu_object_info_t doi; |
34dc7c2f | 1441 | int error; |
428870ff | 1442 | |
572e2857 | 1443 | if ((error = sa_buf_hold(osp, obj, FTAG, db)) != 0) |
34dc7c2f BB |
1444 | return (error); |
1445 | ||
572e2857 | 1446 | dmu_object_info_from_db(*db, &doi); |
428870ff BB |
1447 | if ((doi.doi_bonus_type != DMU_OT_SA && |
1448 | doi.doi_bonus_type != DMU_OT_ZNODE) || | |
d6320ddb BB |
1449 | (doi.doi_bonus_type == DMU_OT_ZNODE && |
1450 | doi.doi_bonus_size < sizeof (znode_phys_t))) { | |
572e2857 BB |
1451 | sa_buf_rele(*db, FTAG); |
1452 | return (ENOTSUP); | |
34dc7c2f BB |
1453 | } |
1454 | ||
572e2857 BB |
1455 | error = sa_handle_get(osp, obj, NULL, SA_HDL_PRIVATE, hdlp); |
1456 | if (error != 0) { | |
1457 | sa_buf_rele(*db, FTAG); | |
428870ff BB |
1458 | return (error); |
1459 | } | |
1460 | ||
572e2857 BB |
1461 | return (0); |
1462 | } | |
1463 | ||
1464 | void | |
1465 | zfs_release_sa_handle(sa_handle_t *hdl, dmu_buf_t *db) | |
1466 | { | |
1467 | sa_handle_destroy(hdl); | |
1468 | sa_buf_rele(db, FTAG); | |
1469 | } | |
1470 | ||
1471 | /* | |
1472 | * Given an object number, return its parent object number and whether | |
1473 | * or not the object is an extended attribute directory. | |
1474 | */ | |
1475 | static int | |
1476 | zfs_obj_to_pobj(sa_handle_t *hdl, sa_attr_type_t *sa_table, uint64_t *pobjp, | |
1477 | int *is_xattrdir) | |
1478 | { | |
1479 | uint64_t parent; | |
1480 | uint64_t pflags; | |
1481 | uint64_t mode; | |
1482 | sa_bulk_attr_t bulk[3]; | |
1483 | int count = 0; | |
1484 | int error; | |
1485 | ||
1486 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_PARENT], NULL, | |
1487 | &parent, sizeof (parent)); | |
428870ff | 1488 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_FLAGS], NULL, |
572e2857 | 1489 | &pflags, sizeof (pflags)); |
428870ff | 1490 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_MODE], NULL, |
572e2857 | 1491 | &mode, sizeof (mode)); |
428870ff | 1492 | |
572e2857 | 1493 | if ((error = sa_bulk_lookup(hdl, bulk, count)) != 0) |
428870ff | 1494 | return (error); |
572e2857 | 1495 | |
428870ff BB |
1496 | *pobjp = parent; |
1497 | *is_xattrdir = ((pflags & ZFS_XATTR) != 0) && S_ISDIR(mode); | |
34dc7c2f BB |
1498 | |
1499 | return (0); | |
1500 | } | |
1501 | ||
572e2857 BB |
1502 | /* |
1503 | * Given an object number, return some zpl level statistics | |
1504 | */ | |
1505 | static int | |
1506 | zfs_obj_to_stats_impl(sa_handle_t *hdl, sa_attr_type_t *sa_table, | |
1507 | zfs_stat_t *sb) | |
34dc7c2f | 1508 | { |
572e2857 BB |
1509 | sa_bulk_attr_t bulk[4]; |
1510 | int count = 0; | |
1511 | ||
1512 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_MODE], NULL, | |
1513 | &sb->zs_mode, sizeof (sb->zs_mode)); | |
1514 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_GEN], NULL, | |
1515 | &sb->zs_gen, sizeof (sb->zs_gen)); | |
1516 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_LINKS], NULL, | |
1517 | &sb->zs_links, sizeof (sb->zs_links)); | |
1518 | SA_ADD_BULK_ATTR(bulk, count, sa_table[ZPL_CTIME], NULL, | |
1519 | &sb->zs_ctime, sizeof (sb->zs_ctime)); | |
1520 | ||
1521 | return (sa_bulk_lookup(hdl, bulk, count)); | |
1522 | } | |
1523 | ||
1524 | static int | |
1525 | zfs_obj_to_path_impl(objset_t *osp, uint64_t obj, sa_handle_t *hdl, | |
1526 | sa_attr_type_t *sa_table, char *buf, int len) | |
1527 | { | |
1528 | sa_handle_t *sa_hdl; | |
1529 | sa_handle_t *prevhdl = NULL; | |
1530 | dmu_buf_t *prevdb = NULL; | |
1531 | dmu_buf_t *sa_db = NULL; | |
34dc7c2f BB |
1532 | char *path = buf + len - 1; |
1533 | int error; | |
1534 | ||
1535 | *path = '\0'; | |
572e2857 | 1536 | sa_hdl = hdl; |
428870ff | 1537 | |
34dc7c2f BB |
1538 | for (;;) { |
1539 | uint64_t pobj; | |
1540 | char component[MAXNAMELEN + 2]; | |
1541 | size_t complen; | |
1542 | int is_xattrdir; | |
1543 | ||
572e2857 BB |
1544 | if (prevdb) |
1545 | zfs_release_sa_handle(prevhdl, prevdb); | |
1546 | ||
1547 | if ((error = zfs_obj_to_pobj(sa_hdl, sa_table, &pobj, | |
1548 | &is_xattrdir)) != 0) | |
34dc7c2f BB |
1549 | break; |
1550 | ||
1551 | if (pobj == obj) { | |
1552 | if (path[0] != '/') | |
1553 | *--path = '/'; | |
1554 | break; | |
1555 | } | |
1556 | ||
1557 | component[0] = '/'; | |
1558 | if (is_xattrdir) { | |
1559 | (void) sprintf(component + 1, "<xattrdir>"); | |
1560 | } else { | |
1561 | error = zap_value_search(osp, pobj, obj, | |
1562 | ZFS_DIRENT_OBJ(-1ULL), component + 1); | |
1563 | if (error != 0) | |
1564 | break; | |
1565 | } | |
1566 | ||
1567 | complen = strlen(component); | |
1568 | path -= complen; | |
1569 | ASSERT(path >= buf); | |
1570 | bcopy(component, path, complen); | |
1571 | obj = pobj; | |
572e2857 BB |
1572 | |
1573 | if (sa_hdl != hdl) { | |
1574 | prevhdl = sa_hdl; | |
1575 | prevdb = sa_db; | |
1576 | } | |
1577 | error = zfs_grab_sa_handle(osp, obj, &sa_hdl, &sa_db); | |
1578 | if (error != 0) { | |
1579 | sa_hdl = prevhdl; | |
1580 | sa_db = prevdb; | |
1581 | break; | |
1582 | } | |
1583 | } | |
1584 | ||
1585 | if (sa_hdl != NULL && sa_hdl != hdl) { | |
1586 | ASSERT(sa_db != NULL); | |
1587 | zfs_release_sa_handle(sa_hdl, sa_db); | |
34dc7c2f BB |
1588 | } |
1589 | ||
1590 | if (error == 0) | |
1591 | (void) memmove(buf, path, buf + len - path); | |
428870ff | 1592 | |
34dc7c2f BB |
1593 | return (error); |
1594 | } | |
572e2857 BB |
1595 | |
1596 | int | |
1597 | zfs_obj_to_path(objset_t *osp, uint64_t obj, char *buf, int len) | |
1598 | { | |
1599 | sa_attr_type_t *sa_table; | |
1600 | sa_handle_t *hdl; | |
1601 | dmu_buf_t *db; | |
1602 | int error; | |
1603 | ||
1604 | error = zfs_sa_setup(osp, &sa_table); | |
1605 | if (error != 0) | |
1606 | return (error); | |
1607 | ||
1608 | error = zfs_grab_sa_handle(osp, obj, &hdl, &db); | |
1609 | if (error != 0) | |
1610 | return (error); | |
1611 | ||
1612 | error = zfs_obj_to_path_impl(osp, obj, hdl, sa_table, buf, len); | |
1613 | ||
1614 | zfs_release_sa_handle(hdl, db); | |
1615 | return (error); | |
1616 | } | |
1617 | ||
1618 | int | |
1619 | zfs_obj_to_stats(objset_t *osp, uint64_t obj, zfs_stat_t *sb, | |
1620 | char *buf, int len) | |
1621 | { | |
1622 | char *path = buf + len - 1; | |
1623 | sa_attr_type_t *sa_table; | |
1624 | sa_handle_t *hdl; | |
1625 | dmu_buf_t *db; | |
1626 | int error; | |
1627 | ||
1628 | *path = '\0'; | |
1629 | ||
1630 | error = zfs_sa_setup(osp, &sa_table); | |
1631 | if (error != 0) | |
1632 | return (error); | |
1633 | ||
1634 | error = zfs_grab_sa_handle(osp, obj, &hdl, &db); | |
1635 | if (error != 0) | |
1636 | return (error); | |
1637 | ||
1638 | error = zfs_obj_to_stats_impl(hdl, sa_table, sb); | |
1639 | if (error != 0) { | |
1640 | zfs_release_sa_handle(hdl, db); | |
1641 | return (error); | |
1642 | } | |
1643 | ||
1644 | error = zfs_obj_to_path_impl(osp, obj, hdl, sa_table, buf, len); | |
1645 | ||
1646 | zfs_release_sa_handle(hdl, db); | |
1647 | return (error); | |
1648 | } | |
c28b2279 BB |
1649 | |
1650 | #if defined(_KERNEL) && defined(HAVE_SPL) | |
1651 | EXPORT_SYMBOL(zfs_create_fs); | |
1652 | EXPORT_SYMBOL(zfs_obj_to_path); | |
1653 | #endif |