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Extending FreeBSD UIO Struct
[mirror_zfs.git] / module / zfs / sa.c
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428870ff
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 */
9ae529ec 21
428870ff
BB		 22/*
23 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
f6d4ce8e 24 * Copyright (c) 2013, 2017 by Delphix. All rights reserved.
0c66c32d 25 * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
428870ff
BB		 26 */
27
28#include <sys/zfs_context.h>
29#include <sys/types.h>
30#include <sys/param.h>
428870ff
BB		 31#include <sys/sysmacros.h>
32#include <sys/dmu.h>
33#include <sys/dmu_impl.h>
34#include <sys/dmu_objset.h>
50c957f7 35#include <sys/dmu_tx.h>
428870ff
BB		 36#include <sys/dbuf.h>
37#include <sys/dnode.h>
38#include <sys/zap.h>
39#include <sys/sa.h>
40#include <sys/sunddi.h>
41#include <sys/sa_impl.h>
428870ff
BB		 42#include <sys/errno.h>
43#include <sys/zfs_context.h>
44
9c5167d1
NF		 45#ifdef _KERNEL
46#include <sys/zfs_znode.h>
47#endif
48
428870ff
BB		 49/*
50 * ZFS System attributes:
51 *
52 * A generic mechanism to allow for arbitrary attributes
53 * to be stored in a dnode. The data will be stored in the bonus buffer of
54 * the dnode and if necessary a special "spill" block will be used to handle
55 * overflow situations. The spill block will be sized to fit the data
56 * from 512 - 128K. When a spill block is used the BP (blkptr_t) for the
57 * spill block is stored at the end of the current bonus buffer. Any
58 * attributes that would be in the way of the blkptr_t will be relocated
59 * into the spill block.
60 *
61 * Attribute registration:
62 *
63 * Stored persistently on a per dataset basis
64 * a mapping between attribute "string" names and their actual attribute
65 * numeric values, length, and byteswap function. The names are only used
66 * during registration. All attributes are known by their unique attribute
67 * id value. If an attribute can have a variable size then the value
68 * 0 will be used to indicate this.
69 *
70 * Attribute Layout:
71 *
72 * Attribute layouts are a way to compactly store multiple attributes, but
73 * without taking the overhead associated with managing each attribute
74 * individually. Since you will typically have the same set of attributes
75 * stored in the same order a single table will be used to represent that
76 * layout. The ZPL for example will usually have only about 10 different
77 * layouts (regular files, device files, symlinks,
78 * regular files + scanstamp, files/dir with extended attributes, and then
79 * you have the possibility of all of those minus ACL, because it would
80 * be kicked out into the spill block)
81 *
82 * Layouts are simply an array of the attributes and their
83 * ordering i.e. [0, 1, 4, 5, 2]
84 *
e1cfd73f 85 * Each distinct layout is given a unique layout number and that is what's
428870ff
BB		 86 * stored in the header at the beginning of the SA data buffer.
87 *
88 * A layout only covers a single dbuf (bonus or spill). If a set of
89 * attributes is split up between the bonus buffer and a spill buffer then
90 * two different layouts will be used. This allows us to byteswap the
91 * spill without looking at the bonus buffer and keeps the on disk format of
92 * the bonus and spill buffer the same.
93 *
94 * Adding a single attribute will cause the entire set of attributes to
95 * be rewritten and could result in a new layout number being constructed
96 * as part of the rewrite if no such layout exists for the new set of
e1cfd73f 97 * attributes. The new attribute will be appended to the end of the already
428870ff
BB		 98 * existing attributes.
99 *
100 * Both the attribute registration and attribute layout information are
101 * stored in normal ZAP attributes. Their should be a small number of
102 * known layouts and the set of attributes is assumed to typically be quite
103 * small.
104 *
105 * The registered attributes and layout "table" information is maintained
106 * in core and a special "sa_os_t" is attached to the objset_t.
107 *
108 * A special interface is provided to allow for quickly applying
109 * a large set of attributes at once. sa_replace_all_by_template() is
110 * used to set an array of attributes. This is used by the ZPL when
111 * creating a brand new file. The template that is passed into the function
112 * specifies the attribute, size for variable length attributes, location of
113 * data and special "data locator" function if the data isn't in a contiguous
114 * location.
115 *
116 * Byteswap implications:
d3cc8b15 117 *
428870ff
BB		 118 * Since the SA attributes are not entirely self describing we can't do
119 * the normal byteswap processing. The special ZAP layout attribute and
120 * attribute registration attributes define the byteswap function and the
121 * size of the attributes, unless it is variable sized.
122 * The normal ZFS byteswapping infrastructure assumes you don't need
123 * to read any objects in order to do the necessary byteswapping. Whereas
124 * SA attributes can only be properly byteswapped if the dataset is opened
125 * and the layout/attribute ZAP attributes are available. Because of this
126 * the SA attributes will be byteswapped when they are first accessed by
127 * the SA code that will read the SA data.
128 */
129
130typedef void (sa_iterfunc_t)(void *hdr, void *addr, sa_attr_type_t,
131 uint16_t length, int length_idx, boolean_t, void *userp);
132
133static int sa_build_index(sa_handle_t *hdl, sa_buf_type_t buftype);
134static void sa_idx_tab_hold(objset_t *os, sa_idx_tab_t *idx_tab);
f6d4ce8e
MA		 135static sa_idx_tab_t *sa_find_idx_tab(objset_t *os, dmu_object_type_t bonustype,
136 sa_hdr_phys_t *hdr);
428870ff
BB		 137static void sa_idx_tab_rele(objset_t *os, void *arg);
138static void sa_copy_data(sa_data_locator_t *func, void *start, void *target,
139 int buflen);
140static int sa_modify_attrs(sa_handle_t *hdl, sa_attr_type_t newattr,
141 sa_data_op_t action, sa_data_locator_t *locator, void *datastart,
142 uint16_t buflen, dmu_tx_t *tx);
143
b01615d5 144arc_byteswap_func_t sa_bswap_table[] = {
428870ff
BB		 145 byteswap_uint64_array,
146 byteswap_uint32_array,
147 byteswap_uint16_array,
148 byteswap_uint8_array,
149 zfs_acl_byteswap,
150};
151
33a19e0f
BB		 152#ifdef HAVE_EFFICIENT_UNALIGNED_ACCESS
153#define SA_COPY_DATA(f, s, t, l) \
154do { \
155 if (f == NULL) { \
156 if (l == 8) { \
157 *(uint64_t *)t = *(uint64_t *)s; \
158 } else if (l == 16) { \
159 *(uint64_t *)t = *(uint64_t *)s; \
160 *(uint64_t *)((uintptr_t)t + 8) = \
161 *(uint64_t *)((uintptr_t)s + 8); \
162 } else { \
163 bcopy(s, t, l); \
164 } \
165 } else { \
166 sa_copy_data(f, s, t, l); \
167 } \
168} while (0)
169#else
170#define SA_COPY_DATA(f, s, t, l) sa_copy_data(f, s, t, l)
171#endif
428870ff
BB		 172
173/*
174 * This table is fixed and cannot be changed. Its purpose is to
175 * allow the SA code to work with both old/new ZPL file systems.
176 * It contains the list of legacy attributes. These attributes aren't
177 * stored in the "attribute" registry zap objects, since older ZPL file systems
178 * won't have the registry. Only objsets of type ZFS_TYPE_FILESYSTEM will
179 * use this static table.
180 */
181sa_attr_reg_t sa_legacy_attrs[] = {
182 {"ZPL_ATIME", sizeof (uint64_t) * 2, SA_UINT64_ARRAY, 0},
183 {"ZPL_MTIME", sizeof (uint64_t) * 2, SA_UINT64_ARRAY, 1},
184 {"ZPL_CTIME", sizeof (uint64_t) * 2, SA_UINT64_ARRAY, 2},
185 {"ZPL_CRTIME", sizeof (uint64_t) * 2, SA_UINT64_ARRAY, 3},
186 {"ZPL_GEN", sizeof (uint64_t), SA_UINT64_ARRAY, 4},
187 {"ZPL_MODE", sizeof (uint64_t), SA_UINT64_ARRAY, 5},
188 {"ZPL_SIZE", sizeof (uint64_t), SA_UINT64_ARRAY, 6},
189 {"ZPL_PARENT", sizeof (uint64_t), SA_UINT64_ARRAY, 7},
190 {"ZPL_LINKS", sizeof (uint64_t), SA_UINT64_ARRAY, 8},
191 {"ZPL_XATTR", sizeof (uint64_t), SA_UINT64_ARRAY, 9},
192 {"ZPL_RDEV", sizeof (uint64_t), SA_UINT64_ARRAY, 10},
193 {"ZPL_FLAGS", sizeof (uint64_t), SA_UINT64_ARRAY, 11},
194 {"ZPL_UID", sizeof (uint64_t), SA_UINT64_ARRAY, 12},
195 {"ZPL_GID", sizeof (uint64_t), SA_UINT64_ARRAY, 13},
196 {"ZPL_PAD", sizeof (uint64_t) * 4, SA_UINT64_ARRAY, 14},
197 {"ZPL_ZNODE_ACL", 88, SA_UINT8_ARRAY, 15},
198};
199
200/*
428870ff
BB		 201 * This is only used for objects of type DMU_OT_ZNODE
202 */
203sa_attr_type_t sa_legacy_zpl_layout[] = {
204 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
205};
206
207/*
208 * Special dummy layout used for buffers with no attributes.
209 */
428870ff
BB		 210sa_attr_type_t sa_dummy_zpl_layout[] = { 0 };
211
51c9163f 212static int sa_legacy_attr_count = ARRAY_SIZE(sa_legacy_attrs);
428870ff
BB		 213static kmem_cache_t *sa_cache = NULL;
214
215/*ARGSUSED*/
216static int
217sa_cache_constructor(void *buf, void *unused, int kmflag)
218{
219 sa_handle_t *hdl = buf;
220
428870ff
BB		 221 mutex_init(&hdl->sa_lock, NULL, MUTEX_DEFAULT, NULL);
222 return (0);
223}
224
225/*ARGSUSED*/
226static void
227sa_cache_destructor(void *buf, void *unused)
228{
229 sa_handle_t *hdl = buf;
230 mutex_destroy(&hdl->sa_lock);
231}
232
233void
234sa_cache_init(void)
235{
236 sa_cache = kmem_cache_create("sa_cache",
237 sizeof (sa_handle_t), 0, sa_cache_constructor,
238 sa_cache_destructor, NULL, NULL, NULL, 0);
239}
240
241void
242sa_cache_fini(void)
243{
244 if (sa_cache)
245 kmem_cache_destroy(sa_cache);
246}
247
248static int
249layout_num_compare(const void *arg1, const void *arg2)
250{
ee36c709
GN		 251 const sa_lot_t *node1 = (const sa_lot_t *)arg1;
252 const sa_lot_t *node2 = (const sa_lot_t *)arg2;
428870ff 253
ca577779 254 return (TREE_CMP(node1->lot_num, node2->lot_num));
428870ff
BB		 255}
256
257static int
258layout_hash_compare(const void *arg1, const void *arg2)
259{
ee36c709
GN		 260 const sa_lot_t *node1 = (const sa_lot_t *)arg1;
261 const sa_lot_t *node2 = (const sa_lot_t *)arg2;
428870ff 262
ca577779 263 int cmp = TREE_CMP(node1->lot_hash, node2->lot_hash);
ee36c709
GN		 264 if (likely(cmp))
265 return (cmp);
266
ca577779 267 return (TREE_CMP(node1->lot_instance, node2->lot_instance));
428870ff
BB		 268}
269
65c7cc49 270static boolean_t
428870ff
BB		 271sa_layout_equal(sa_lot_t *tbf, sa_attr_type_t *attrs, int count)
272{
273 int i;
274
275 if (count != tbf->lot_attr_count)
276 return (1);
277
278 for (i = 0; i != count; i++) {
279 if (attrs[i] != tbf->lot_attrs[i])
280 return (1);
281 }
282 return (0);
283}
284
285#define SA_ATTR_HASH(attr) (zfs_crc64_table[(-1ULL ^ attr) & 0xFF])
286
287static uint64_t
288sa_layout_info_hash(sa_attr_type_t *attrs, int attr_count)
289{
290 int i;
291 uint64_t crc = -1ULL;
292
293 for (i = 0; i != attr_count; i++)
294 crc ^= SA_ATTR_HASH(attrs[i]);
295
296 return (crc);
297}
298
572e2857
BB		 299static int
300sa_get_spill(sa_handle_t *hdl)
428870ff
BB		 301{
302 int rc;
303 if (hdl->sa_spill == NULL) {
304 if ((rc = dmu_spill_hold_existing(hdl->sa_bonus, NULL,
305 &hdl->sa_spill)) == 0)
306 VERIFY(0 == sa_build_index(hdl, SA_SPILL));
307 } else {
308 rc = 0;
309 }
310
572e2857 311 return (rc);
428870ff
BB		 312}
313
314/*
315 * Main attribute lookup/update function
316 * returns 0 for success or non zero for failures
317 *
318 * Operates on bulk array, first failure will abort further processing
319 */
65c7cc49 320static int
428870ff
BB		 321sa_attr_op(sa_handle_t *hdl, sa_bulk_attr_t *bulk, int count,
322 sa_data_op_t data_op, dmu_tx_t *tx)
323{
324 sa_os_t *sa = hdl->sa_os->os_sa;
325 int i;
326 int error = 0;
327 sa_buf_type_t buftypes;
328
329 buftypes = 0;
330
331 ASSERT(count > 0);
332 for (i = 0; i != count; i++) {
333 ASSERT(bulk[i].sa_attr <= hdl->sa_os->os_sa->sa_num_attrs);
334
335 bulk[i].sa_addr = NULL;
336 /* First check the bonus buffer */
337
338 if (hdl->sa_bonus_tab && TOC_ATTR_PRESENT(
339 hdl->sa_bonus_tab->sa_idx_tab[bulk[i].sa_attr])) {
340 SA_ATTR_INFO(sa, hdl->sa_bonus_tab,
341 SA_GET_HDR(hdl, SA_BONUS),
342 bulk[i].sa_attr, bulk[i], SA_BONUS, hdl);
343 if (tx && !(buftypes & SA_BONUS)) {
344 dmu_buf_will_dirty(hdl->sa_bonus, tx);
345 buftypes |= SA_BONUS;
346 }
347 }
572e2857
BB		 348 if (bulk[i].sa_addr == NULL &&
349 ((error = sa_get_spill(hdl)) == 0)) {
428870ff
BB		 350 if (TOC_ATTR_PRESENT(
351 hdl->sa_spill_tab->sa_idx_tab[bulk[i].sa_attr])) {
352 SA_ATTR_INFO(sa, hdl->sa_spill_tab,
353 SA_GET_HDR(hdl, SA_SPILL),
354 bulk[i].sa_attr, bulk[i], SA_SPILL, hdl);
355 if (tx && !(buftypes & SA_SPILL) &&
356 bulk[i].sa_size == bulk[i].sa_length) {
357 dmu_buf_will_dirty(hdl->sa_spill, tx);
358 buftypes |= SA_SPILL;
359 }
360 }
361 }
572e2857
BB		 362 if (error && error != ENOENT) {
363 return ((error == ECKSUM) ? EIO : error);
364 }
365
428870ff
BB		 366 switch (data_op) {
367 case SA_LOOKUP:
368 if (bulk[i].sa_addr == NULL)
2e528b49 369 return (SET_ERROR(ENOENT));
428870ff
BB		 370 if (bulk[i].sa_data) {
371 SA_COPY_DATA(bulk[i].sa_data_func,
372 bulk[i].sa_addr, bulk[i].sa_data,
373 bulk[i].sa_size);
374 }
375 continue;
376
377 case SA_UPDATE:
378 /* existing rewrite of attr */
379 if (bulk[i].sa_addr &&
380 bulk[i].sa_size == bulk[i].sa_length) {
381 SA_COPY_DATA(bulk[i].sa_data_func,
382 bulk[i].sa_data, bulk[i].sa_addr,
383 bulk[i].sa_length);
384 continue;
385 } else if (bulk[i].sa_addr) { /* attr size change */
386 error = sa_modify_attrs(hdl, bulk[i].sa_attr,
387 SA_REPLACE, bulk[i].sa_data_func,
388 bulk[i].sa_data, bulk[i].sa_length, tx);
389 } else { /* adding new attribute */
390 error = sa_modify_attrs(hdl, bulk[i].sa_attr,
391 SA_ADD, bulk[i].sa_data_func,
392 bulk[i].sa_data, bulk[i].sa_length, tx);
393 }
394 if (error)
395 return (error);
396 break;
e75c13c3
BB		 397 default:
398 break;
428870ff
BB		 399 }
400 }
401 return (error);
402}
403
404static sa_lot_t *
405sa_add_layout_entry(objset_t *os, sa_attr_type_t *attrs, int attr_count,
406 uint64_t lot_num, uint64_t hash, boolean_t zapadd, dmu_tx_t *tx)
407{
408 sa_os_t *sa = os->os_sa;
409 sa_lot_t *tb, *findtb;
410 int i;
411 avl_index_t loc;
412
413 ASSERT(MUTEX_HELD(&sa->sa_lock));
79c76d5b 414 tb = kmem_zalloc(sizeof (sa_lot_t), KM_SLEEP);
428870ff
BB		 415 tb->lot_attr_count = attr_count;
416 tb->lot_attrs = kmem_alloc(sizeof (sa_attr_type_t) * attr_count,
79c76d5b 417 KM_SLEEP);
428870ff
BB		 418 bcopy(attrs, tb->lot_attrs, sizeof (sa_attr_type_t) * attr_count);
419 tb->lot_num = lot_num;
420 tb->lot_hash = hash;
421 tb->lot_instance = 0;
422
423 if (zapadd) {
424 char attr_name[8];
425
426 if (sa->sa_layout_attr_obj == 0) {
9ae529ec
CS		 427 sa->sa_layout_attr_obj = zap_create_link(os,
428 DMU_OT_SA_ATTR_LAYOUTS,
429 sa->sa_master_obj, SA_LAYOUTS, tx);
428870ff
BB		 430 }
431
432 (void) snprintf(attr_name, sizeof (attr_name),
433 "%d", (int)lot_num);
434 VERIFY(0 == zap_update(os, os->os_sa->sa_layout_attr_obj,
435 attr_name, 2, attr_count, attrs, tx));
436 }
437
438 list_create(&tb->lot_idx_tab, sizeof (sa_idx_tab_t),
439 offsetof(sa_idx_tab_t, sa_next));
440
441 for (i = 0; i != attr_count; i++) {
442 if (sa->sa_attr_table[tb->lot_attrs[i]].sa_length == 0)
443 tb->lot_var_sizes++;
444 }
445
446 avl_add(&sa->sa_layout_num_tree, tb);
447
448 /* verify we don't have a hash collision */
449 if ((findtb = avl_find(&sa->sa_layout_hash_tree, tb, &loc)) != NULL) {
450 for (; findtb && findtb->lot_hash == hash;
451 findtb = AVL_NEXT(&sa->sa_layout_hash_tree, findtb)) {
452 if (findtb->lot_instance != tb->lot_instance)
453 break;
454 tb->lot_instance++;
455 }
456 }
457 avl_add(&sa->sa_layout_hash_tree, tb);
458 return (tb);
459}
460
461static void
462sa_find_layout(objset_t *os, uint64_t hash, sa_attr_type_t *attrs,
463 int count, dmu_tx_t *tx, sa_lot_t **lot)
464{
465 sa_lot_t *tb, tbsearch;
466 avl_index_t loc;
467 sa_os_t *sa = os->os_sa;
468 boolean_t found = B_FALSE;
469
470 mutex_enter(&sa->sa_lock);
471 tbsearch.lot_hash = hash;
472 tbsearch.lot_instance = 0;
473 tb = avl_find(&sa->sa_layout_hash_tree, &tbsearch, &loc);
474 if (tb) {
475 for (; tb && tb->lot_hash == hash;
476 tb = AVL_NEXT(&sa->sa_layout_hash_tree, tb)) {
477 if (sa_layout_equal(tb, attrs, count) == 0) {
478 found = B_TRUE;
479 break;
480 }
481 }
482 }
483 if (!found) {
484 tb = sa_add_layout_entry(os, attrs, count,
485 avl_numnodes(&sa->sa_layout_num_tree), hash, B_TRUE, tx);
486 }
487 mutex_exit(&sa->sa_lock);
488 *lot = tb;
489}
490
491static int
492sa_resize_spill(sa_handle_t *hdl, uint32_t size, dmu_tx_t *tx)
493{
494 int error;
495 uint32_t blocksize;
496
497 if (size == 0) {
498 blocksize = SPA_MINBLOCKSIZE;
f1512ee6 499 } else if (size > SPA_OLD_MAXBLOCKSIZE) {
428870ff 500 ASSERT(0);
2e528b49 501 return (SET_ERROR(EFBIG));
428870ff
BB		 502 } else {
503 blocksize = P2ROUNDUP_TYPED(size, SPA_MINBLOCKSIZE, uint32_t);
504 }
505
506 error = dbuf_spill_set_blksz(hdl->sa_spill, blocksize, tx);
507 ASSERT(error == 0);
508 return (error);
509}
510
511static void
512sa_copy_data(sa_data_locator_t *func, void *datastart, void *target, int buflen)
513{
514 if (func == NULL) {
515 bcopy(datastart, target, buflen);
516 } else {
517 boolean_t start;
518 int bytes;
519 void *dataptr;
520 void *saptr = target;
521 uint32_t length;
522
523 start = B_TRUE;
524 bytes = 0;
525 while (bytes < buflen) {
526 func(&dataptr, &length, buflen, start, datastart);
527 bcopy(dataptr, saptr, length);
528 saptr = (void *)((caddr_t)saptr + length);
529 bytes += length;
530 start = B_FALSE;
531 }
532 }
533}
534
535/*
a62d1b02
NB		 536 * Determine several different values pertaining to system attribute
537 * buffers.
428870ff 538 *
a62d1b02
NB		 539 * Return the size of the sa_hdr_phys_t header for the buffer. Each
540 * variable length attribute except the first contributes two bytes to
541 * the header size, which is then rounded up to an 8-byte boundary.
542 *
543 * The following output parameters are also computed.
544 *
545 * index - The index of the first attribute in attr_desc that will
546 * spill over. Only valid if will_spill is set.
547 *
548 * total - The total number of bytes of all system attributes described
549 * in attr_desc.
550 *
551 * will_spill - Set when spilling is necessary. It is only set when
552 * the buftype is SA_BONUS.
428870ff
BB		 553 */
554static int
555sa_find_sizes(sa_os_t *sa, sa_bulk_attr_t *attr_desc, int attr_count,
50c957f7
NB		 556 dmu_buf_t *db, sa_buf_type_t buftype, int full_space, int *index,
557 int *total, boolean_t *will_spill)
428870ff 558{
a62d1b02 559 int var_size_count = 0;
428870ff 560 int i;
428870ff 561 int hdrsize;
472e7c60 562 int extra_hdrsize;
428870ff
BB		 563
564 if (buftype == SA_BONUS && sa->sa_force_spill) {
565 *total = 0;
566 *index = 0;
567 *will_spill = B_TRUE;
568 return (0);
569 }
570
571 *index = -1;
572 *total = 0;
472e7c60 573 *will_spill = B_FALSE;
428870ff 574
472e7c60 575 extra_hdrsize = 0;
428870ff
BB		 576 hdrsize = (SA_BONUSTYPE_FROM_DB(db) == DMU_OT_ZNODE) ? 0 :
577 sizeof (sa_hdr_phys_t);
578
67629d0f 579 ASSERT(IS_P2ALIGNED(full_space, 8));
428870ff
BB		 580
581 for (i = 0; i != attr_count; i++) {
83021b47 582 boolean_t is_var_sz, might_spill_here;
a62d1b02 583 int tmp_hdrsize;
428870ff 584
67629d0f 585 *total = P2ROUNDUP(*total, 8);
428870ff 586 *total += attr_desc[i].sa_length;
472e7c60
JP		 587 if (*will_spill)
588 continue;
428870ff
BB		 589
590 is_var_sz = (SA_REGISTERED_LEN(sa, attr_desc[i].sa_attr) == 0);
a62d1b02
NB		 591 if (is_var_sz)
592 var_size_count++;
593
594 /*
595 * Calculate what the SA header size would be if this
596 * attribute doesn't spill.
597 */
598 tmp_hdrsize = hdrsize + ((is_var_sz && var_size_count > 1) ?
599 sizeof (uint16_t) : 0);
428870ff 600
a62d1b02
NB		 601 /*
602 * Check whether this attribute spans into the space
603 * that would be used by the spill block pointer should
604 * a spill block be needed.
605 */
83021b47
TC		 606 might_spill_here =
607 buftype == SA_BONUS && *index == -1 &&
a62d1b02 608 (*total + P2ROUNDUP(tmp_hdrsize, 8)) >
83021b47
TC		 609 (full_space - sizeof (blkptr_t));
610
a62d1b02 611 if (is_var_sz && var_size_count > 1) {
472e7c60 612 if (buftype == SA_SPILL ||
a62d1b02 613 tmp_hdrsize + *total < full_space) {
36f86f73 614 /*
472e7c60
JP		 615 * Record the extra header size in case this
616 * increase needs to be reversed due to
617 * spill-over.
36f86f73 618 */
a62d1b02 619 hdrsize = tmp_hdrsize;
83021b47 620 if (*index != -1 || might_spill_here)
472e7c60 621 extra_hdrsize += sizeof (uint16_t);
428870ff 622 } else {
472e7c60
JP		 623 ASSERT(buftype == SA_BONUS);
624 if (*index == -1)
625 *index = i;
626 *will_spill = B_TRUE;
428870ff
BB		 627 continue;
628 }
629 }
630
631 /*
a62d1b02
NB		 632 * Store index of where spill *could* occur. Then
633 * continue to count the remaining attribute sizes. The
634 * sum is used later for sizing bonus and spill buffer.
428870ff 635 */
83021b47 636 if (might_spill_here)
428870ff 637 *index = i;
428870ff 638
c4751676 639 if ((*total + P2ROUNDUP(hdrsize, 8)) > full_space &&
428870ff
BB		 640 buftype == SA_BONUS)
641 *will_spill = B_TRUE;
642 }
643
472e7c60
JP		 644 if (*will_spill)
645 hdrsize -= extra_hdrsize;
36f86f73 646
428870ff
BB		 647 hdrsize = P2ROUNDUP(hdrsize, 8);
648 return (hdrsize);
649}
650
651#define BUF_SPACE_NEEDED(total, header) (total + header)
652
653/*
654 * Find layout that corresponds to ordering of attributes
655 * If not found a new layout number is created and added to
656 * persistent layout tables.
657 */
658static int
659sa_build_layouts(sa_handle_t *hdl, sa_bulk_attr_t *attr_desc, int attr_count,
660 dmu_tx_t *tx)
661{
662 sa_os_t *sa = hdl->sa_os->os_sa;
663 uint64_t hash;
664 sa_buf_type_t buftype;
665 sa_hdr_phys_t *sahdr;
666 void *data_start;
428870ff
BB		 667 sa_attr_type_t *attrs, *attrs_start;
668 int i, lot_count;
50c957f7 669 int dnodesize;
a62d1b02 670 int spill_idx;
a117a6d6
GW		 671 int hdrsize;
672 int spillhdrsize = 0;
428870ff
BB		 673 int used;
674 dmu_object_type_t bonustype;
675 sa_lot_t *lot;
676 int len_idx;
677 int spill_used;
50c957f7 678 int bonuslen;
428870ff
BB		 679 boolean_t spilling;
680
681 dmu_buf_will_dirty(hdl->sa_bonus, tx);
682 bonustype = SA_BONUSTYPE_FROM_DB(hdl->sa_bonus);
50c957f7
NB		 683 dmu_object_dnsize_from_db(hdl->sa_bonus, &dnodesize);
684 bonuslen = DN_BONUS_SIZE(dnodesize);
428870ff
BB		 685
686 /* first determine bonus header size and sum of all attributes */
687 hdrsize = sa_find_sizes(sa, attr_desc, attr_count, hdl->sa_bonus,
50c957f7 688 SA_BONUS, bonuslen, &spill_idx, &used, &spilling);
428870ff 689
f1512ee6 690 if (used > SPA_OLD_MAXBLOCKSIZE)
2e528b49 691 return (SET_ERROR(EFBIG));
428870ff 692
50c957f7
NB		 693 VERIFY0(dmu_set_bonus(hdl->sa_bonus, spilling ?
694 MIN(bonuslen - sizeof (blkptr_t), used + hdrsize) :
428870ff
BB		 695 used + hdrsize, tx));
696
697 ASSERT((bonustype == DMU_OT_ZNODE && spilling == 0) ||
698 bonustype == DMU_OT_SA);
699
700 /* setup and size spill buffer when needed */
701 if (spilling) {
702 boolean_t dummy;
703
704 if (hdl->sa_spill == NULL) {
e7504d7a 705 VERIFY(dmu_spill_hold_by_bonus(hdl->sa_bonus, 0, NULL,
572e2857 706 &hdl->sa_spill) == 0);
428870ff
BB		 707 }
708 dmu_buf_will_dirty(hdl->sa_spill, tx);
709
a62d1b02 710 spillhdrsize = sa_find_sizes(sa, &attr_desc[spill_idx],
50c957f7
NB		 711 attr_count - spill_idx, hdl->sa_spill, SA_SPILL,
712 hdl->sa_spill->db_size, &i, &spill_used, &dummy);
428870ff 713
f1512ee6 714 if (spill_used > SPA_OLD_MAXBLOCKSIZE)
2e528b49 715 return (SET_ERROR(EFBIG));
428870ff 716
428870ff
BB		 717 if (BUF_SPACE_NEEDED(spill_used, spillhdrsize) >
718 hdl->sa_spill->db_size)
719 VERIFY(0 == sa_resize_spill(hdl,
720 BUF_SPACE_NEEDED(spill_used, spillhdrsize), tx));
721 }
722
723 /* setup starting pointers to lay down data */
724 data_start = (void *)((uintptr_t)hdl->sa_bonus->db_data + hdrsize);
725 sahdr = (sa_hdr_phys_t *)hdl->sa_bonus->db_data;
726 buftype = SA_BONUS;
727
428870ff 728 attrs_start = attrs = kmem_alloc(sizeof (sa_attr_type_t) * attr_count,
79c76d5b 729 KM_SLEEP);
428870ff
BB		 730 lot_count = 0;
731
732 for (i = 0, len_idx = 0, hash = -1ULL; i != attr_count; i++) {
733 uint16_t length;
734
67629d0f 735 ASSERT(IS_P2ALIGNED(data_start, 8));
428870ff
BB		 736 attrs[i] = attr_desc[i].sa_attr;
737 length = SA_REGISTERED_LEN(sa, attrs[i]);
738 if (length == 0)
739 length = attr_desc[i].sa_length;
740
a62d1b02 741 if (spilling && i == spill_idx) { /* switch to spill buffer */
572e2857 742 VERIFY(bonustype == DMU_OT_SA);
428870ff
BB		 743 if (buftype == SA_BONUS && !sa->sa_force_spill) {
744 sa_find_layout(hdl->sa_os, hash, attrs_start,
745 lot_count, tx, &lot);
746 SA_SET_HDR(sahdr, lot->lot_num, hdrsize);
747 }
748
749 buftype = SA_SPILL;
750 hash = -1ULL;
751 len_idx = 0;
752
753 sahdr = (sa_hdr_phys_t *)hdl->sa_spill->db_data;
754 sahdr->sa_magic = SA_MAGIC;
755 data_start = (void *)((uintptr_t)sahdr +
756 spillhdrsize);
757 attrs_start = &attrs[i];
428870ff
BB		 758 lot_count = 0;
759 }
760 hash ^= SA_ATTR_HASH(attrs[i]);
761 attr_desc[i].sa_addr = data_start;
762 attr_desc[i].sa_size = length;
763 SA_COPY_DATA(attr_desc[i].sa_data_func, attr_desc[i].sa_data,
764 data_start, length);
765 if (sa->sa_attr_table[attrs[i]].sa_length == 0) {
766 sahdr->sa_lengths[len_idx++] = length;
767 }
768 data_start = (void *)P2ROUNDUP(((uintptr_t)data_start +
769 length), 8);
428870ff
BB		 770 lot_count++;
771 }
772
773 sa_find_layout(hdl->sa_os, hash, attrs_start, lot_count, tx, &lot);
572e2857
BB		 774
775 /*
776 * Verify that old znodes always have layout number 0.
777 * Must be DMU_OT_SA for arbitrary layouts
778 */
779 VERIFY((bonustype == DMU_OT_ZNODE && lot->lot_num == 0) ||
780 (bonustype == DMU_OT_SA && lot->lot_num > 1));
781
428870ff
BB		 782 if (bonustype == DMU_OT_SA) {
783 SA_SET_HDR(sahdr, lot->lot_num,
784 buftype == SA_BONUS ? hdrsize : spillhdrsize);
785 }
786
787 kmem_free(attrs, sizeof (sa_attr_type_t) * attr_count);
788 if (hdl->sa_bonus_tab) {
789 sa_idx_tab_rele(hdl->sa_os, hdl->sa_bonus_tab);
790 hdl->sa_bonus_tab = NULL;
791 }
792 if (!sa->sa_force_spill)
793 VERIFY(0 == sa_build_index(hdl, SA_BONUS));
794 if (hdl->sa_spill) {
795 sa_idx_tab_rele(hdl->sa_os, hdl->sa_spill_tab);
796 if (!spilling) {
797 /*
798 * remove spill block that is no longer needed.
428870ff
BB		 799 */
800 dmu_buf_rele(hdl->sa_spill, NULL);
801 hdl->sa_spill = NULL;
802 hdl->sa_spill_tab = NULL;
803 VERIFY(0 == dmu_rm_spill(hdl->sa_os,
804 sa_handle_object(hdl), tx));
805 } else {
806 VERIFY(0 == sa_build_index(hdl, SA_SPILL));
807 }
808 }
809
810 return (0);
811}
812
813static void
572e2857
BB		 814sa_free_attr_table(sa_os_t *sa)
815{
816 int i;
817
818 if (sa->sa_attr_table == NULL)
819 return;
820
821 for (i = 0; i != sa->sa_num_attrs; i++) {
822 if (sa->sa_attr_table[i].sa_name)
823 kmem_free(sa->sa_attr_table[i].sa_name,
824 strlen(sa->sa_attr_table[i].sa_name) + 1);
825 }
826
827 kmem_free(sa->sa_attr_table,
828 sizeof (sa_attr_table_t) * sa->sa_num_attrs);
829
830 sa->sa_attr_table = NULL;
831}
832
833static int
428870ff
BB		 834sa_attr_table_setup(objset_t *os, sa_attr_reg_t *reg_attrs, int count)
835{
836 sa_os_t *sa = os->os_sa;
837 uint64_t sa_attr_count = 0;
d4ed6673 838 uint64_t sa_reg_count = 0;
428870ff
BB		 839 int error = 0;
840 uint64_t attr_value;
841 sa_attr_table_t *tb;
842 zap_cursor_t zc;
843 zap_attribute_t za;
844 int registered_count = 0;
845 int i;
846 dmu_objset_type_t ostype = dmu_objset_type(os);
847
848 sa->sa_user_table =
79c76d5b 849 kmem_zalloc(count * sizeof (sa_attr_type_t), KM_SLEEP);
428870ff
BB		 850 sa->sa_user_table_sz = count * sizeof (sa_attr_type_t);
851
572e2857
BB		 852 if (sa->sa_reg_attr_obj != 0) {
853 error = zap_count(os, sa->sa_reg_attr_obj,
854 &sa_attr_count);
855
856 /*
857 * Make sure we retrieved a count and that it isn't zero
858 */
859 if (error || (error == 0 && sa_attr_count == 0)) {
860 if (error == 0)
2e528b49 861 error = SET_ERROR(EINVAL);
572e2857
BB		 862 goto bail;
863 }
864 sa_reg_count = sa_attr_count;
865 }
428870ff
BB		 866
867 if (ostype == DMU_OST_ZFS && sa_attr_count == 0)
868 sa_attr_count += sa_legacy_attr_count;
869
870 /* Allocate attribute numbers for attributes that aren't registered */
871 for (i = 0; i != count; i++) {
872 boolean_t found = B_FALSE;
873 int j;
874
875 if (ostype == DMU_OST_ZFS) {
876 for (j = 0; j != sa_legacy_attr_count; j++) {
877 if (strcmp(reg_attrs[i].sa_name,
878 sa_legacy_attrs[j].sa_name) == 0) {
879 sa->sa_user_table[i] =
880 sa_legacy_attrs[j].sa_attr;
881 found = B_TRUE;
882 }
883 }
884 }
885 if (found)
886 continue;
887
888 if (sa->sa_reg_attr_obj)
889 error = zap_lookup(os, sa->sa_reg_attr_obj,
890 reg_attrs[i].sa_name, 8, 1, &attr_value);
891 else
2e528b49 892 error = SET_ERROR(ENOENT);
428870ff 893 switch (error) {
428870ff
BB		 894 case ENOENT:
895 sa->sa_user_table[i] = (sa_attr_type_t)sa_attr_count;
896 sa_attr_count++;
897 break;
898 case 0:
899 sa->sa_user_table[i] = ATTR_NUM(attr_value);
900 break;
572e2857
BB		 901 default:
902 goto bail;
428870ff
BB		 903 }
904 }
905
572e2857
BB		 906 sa->sa_num_attrs = sa_attr_count;
907 tb = sa->sa_attr_table =
79c76d5b 908 kmem_zalloc(sizeof (sa_attr_table_t) * sa_attr_count, KM_SLEEP);
428870ff
BB		 909
910 /*
911 * Attribute table is constructed from requested attribute list,
912 * previously foreign registered attributes, and also the legacy
913 * ZPL set of attributes.
914 */
915
916 if (sa->sa_reg_attr_obj) {
917 for (zap_cursor_init(&zc, os, sa->sa_reg_attr_obj);
572e2857 918 (error = zap_cursor_retrieve(&zc, &za)) == 0;
428870ff
BB		 919 zap_cursor_advance(&zc)) {
920 uint64_t value;
921 value = za.za_first_integer;
922
923 registered_count++;
924 tb[ATTR_NUM(value)].sa_attr = ATTR_NUM(value);
925 tb[ATTR_NUM(value)].sa_length = ATTR_LENGTH(value);
926 tb[ATTR_NUM(value)].sa_byteswap = ATTR_BSWAP(value);
927 tb[ATTR_NUM(value)].sa_registered = B_TRUE;
928
929 if (tb[ATTR_NUM(value)].sa_name) {
930 continue;
931 }
932 tb[ATTR_NUM(value)].sa_name =
79c76d5b 933 kmem_zalloc(strlen(za.za_name) +1, KM_SLEEP);
428870ff
BB		 934 (void) strlcpy(tb[ATTR_NUM(value)].sa_name, za.za_name,
935 strlen(za.za_name) +1);
936 }
937 zap_cursor_fini(&zc);
572e2857
BB		 938 /*
939 * Make sure we processed the correct number of registered
940 * attributes
941 */
942 if (registered_count != sa_reg_count) {
943 ASSERT(error != 0);
944 goto bail;
945 }
946
428870ff
BB		 947 }
948
949 if (ostype == DMU_OST_ZFS) {
950 for (i = 0; i != sa_legacy_attr_count; i++) {
951 if (tb[i].sa_name)
952 continue;
953 tb[i].sa_attr = sa_legacy_attrs[i].sa_attr;
954 tb[i].sa_length = sa_legacy_attrs[i].sa_length;
955 tb[i].sa_byteswap = sa_legacy_attrs[i].sa_byteswap;
956 tb[i].sa_registered = B_FALSE;
957 tb[i].sa_name =
958 kmem_zalloc(strlen(sa_legacy_attrs[i].sa_name) +1,
79c76d5b 959 KM_SLEEP);
428870ff
BB		 960 (void) strlcpy(tb[i].sa_name,
961 sa_legacy_attrs[i].sa_name,
962 strlen(sa_legacy_attrs[i].sa_name) + 1);
963 }
964 }
965
966 for (i = 0; i != count; i++) {
967 sa_attr_type_t attr_id;
968
969 attr_id = sa->sa_user_table[i];
970 if (tb[attr_id].sa_name)
971 continue;
972
973 tb[attr_id].sa_length = reg_attrs[i].sa_length;
974 tb[attr_id].sa_byteswap = reg_attrs[i].sa_byteswap;
975 tb[attr_id].sa_attr = attr_id;
976 tb[attr_id].sa_name =
79c76d5b 977 kmem_zalloc(strlen(reg_attrs[i].sa_name) + 1, KM_SLEEP);
428870ff
BB		 978 (void) strlcpy(tb[attr_id].sa_name, reg_attrs[i].sa_name,
979 strlen(reg_attrs[i].sa_name) + 1);
980 }
981
572e2857 982 sa->sa_need_attr_registration =
428870ff 983 (sa_attr_count != registered_count);
572e2857
BB		 984
985 return (0);
986bail:
987 kmem_free(sa->sa_user_table, count * sizeof (sa_attr_type_t));
988 sa->sa_user_table = NULL;
989 sa_free_attr_table(sa);
523d5ce0
TH		 990 ASSERT(error != 0);
991 return (error);
428870ff
BB		 992}
993
572e2857
BB		 994int
995sa_setup(objset_t *os, uint64_t sa_obj, sa_attr_reg_t *reg_attrs, int count,
996 sa_attr_type_t **user_table)
428870ff
BB		 997{
998 zap_cursor_t zc;
999 zap_attribute_t za;
1000 sa_os_t *sa;
1001 dmu_objset_type_t ostype = dmu_objset_type(os);
1002 sa_attr_type_t *tb;
572e2857 1003 int error;
428870ff 1004
13fe0198 1005 mutex_enter(&os->os_user_ptr_lock);
428870ff
BB		 1006 if (os->os_sa) {
1007 mutex_enter(&os->os_sa->sa_lock);
13fe0198 1008 mutex_exit(&os->os_user_ptr_lock);
428870ff
BB		 1009 tb = os->os_sa->sa_user_table;
1010 mutex_exit(&os->os_sa->sa_lock);
572e2857
BB		 1011 *user_table = tb;
1012 return (0);
428870ff
BB		 1013 }
1014
79c76d5b 1015 sa = kmem_zalloc(sizeof (sa_os_t), KM_SLEEP);
3beb0a76 1016 mutex_init(&sa->sa_lock, NULL, MUTEX_NOLOCKDEP, NULL);
428870ff
BB		 1017 sa->sa_master_obj = sa_obj;
1018
572e2857 1019 os->os_sa = sa;
428870ff 1020 mutex_enter(&sa->sa_lock);
13fe0198 1021 mutex_exit(&os->os_user_ptr_lock);
428870ff
BB		 1022 avl_create(&sa->sa_layout_num_tree, layout_num_compare,
1023 sizeof (sa_lot_t), offsetof(sa_lot_t, lot_num_node));
1024 avl_create(&sa->sa_layout_hash_tree, layout_hash_compare,
1025 sizeof (sa_lot_t), offsetof(sa_lot_t, lot_hash_node));
1026
1027 if (sa_obj) {
428870ff
BB		 1028 error = zap_lookup(os, sa_obj, SA_LAYOUTS,
1029 8, 1, &sa->sa_layout_attr_obj);
572e2857
BB		 1030 if (error != 0 && error != ENOENT)
1031 goto fail;
428870ff
BB		 1032 error = zap_lookup(os, sa_obj, SA_REGISTRY,
1033 8, 1, &sa->sa_reg_attr_obj);
572e2857
BB		 1034 if (error != 0 && error != ENOENT)
1035 goto fail;
428870ff
BB		 1036 }
1037
572e2857
BB		 1038 if ((error = sa_attr_table_setup(os, reg_attrs, count)) != 0)
1039 goto fail;
428870ff
BB		 1040
1041 if (sa->sa_layout_attr_obj != 0) {
572e2857
BB		 1042 uint64_t layout_count;
1043
1044 error = zap_count(os, sa->sa_layout_attr_obj,
1045 &layout_count);
1046
1047 /*
1048 * Layout number count should be > 0
1049 */
1050 if (error || (error == 0 && layout_count == 0)) {
1051 if (error == 0)
2e528b49 1052 error = SET_ERROR(EINVAL);
572e2857
BB		 1053 goto fail;
1054 }
1055
428870ff 1056 for (zap_cursor_init(&zc, os, sa->sa_layout_attr_obj);
572e2857 1057 (error = zap_cursor_retrieve(&zc, &za)) == 0;
428870ff
BB		 1058 zap_cursor_advance(&zc)) {
1059 sa_attr_type_t *lot_attrs;
1060 uint64_t lot_num;
1061
1062 lot_attrs = kmem_zalloc(sizeof (sa_attr_type_t) *
79c76d5b 1063 za.za_num_integers, KM_SLEEP);
428870ff 1064
572e2857
BB		 1065 if ((error = (zap_lookup(os, sa->sa_layout_attr_obj,
1066 za.za_name, 2, za.za_num_integers,
1067 lot_attrs))) != 0) {
1068 kmem_free(lot_attrs, sizeof (sa_attr_type_t) *
1069 za.za_num_integers);
1070 break;
1071 }
428870ff
BB		 1072 VERIFY(ddi_strtoull(za.za_name, NULL, 10,
1073 (unsigned long long *)&lot_num) == 0);
1074
1075 (void) sa_add_layout_entry(os, lot_attrs,
1076 za.za_num_integers, lot_num,
1077 sa_layout_info_hash(lot_attrs,
1078 za.za_num_integers), B_FALSE, NULL);
1079 kmem_free(lot_attrs, sizeof (sa_attr_type_t) *
1080 za.za_num_integers);
1081 }
1082 zap_cursor_fini(&zc);
572e2857
BB		 1083
1084 /*
1085 * Make sure layout count matches number of entries added
1086 * to AVL tree
1087 */
1088 if (avl_numnodes(&sa->sa_layout_num_tree) != layout_count) {
1089 ASSERT(error != 0);
1090 goto fail;
1091 }
428870ff
BB		 1092 }
1093
1094 /* Add special layout number for old ZNODES */
1095 if (ostype == DMU_OST_ZFS) {
1096 (void) sa_add_layout_entry(os, sa_legacy_zpl_layout,
1097 sa_legacy_attr_count, 0,
1098 sa_layout_info_hash(sa_legacy_zpl_layout,
1099 sa_legacy_attr_count), B_FALSE, NULL);
1100
1101 (void) sa_add_layout_entry(os, sa_dummy_zpl_layout, 0, 1,
1102 0, B_FALSE, NULL);
1103 }
572e2857 1104 *user_table = os->os_sa->sa_user_table;
428870ff 1105 mutex_exit(&sa->sa_lock);
572e2857
BB		 1106 return (0);
1107fail:
1108 os->os_sa = NULL;
1109 sa_free_attr_table(sa);
1110 if (sa->sa_user_table)
1111 kmem_free(sa->sa_user_table, sa->sa_user_table_sz);
1112 mutex_exit(&sa->sa_lock);
58c4aa00
JL		 1113 avl_destroy(&sa->sa_layout_hash_tree);
1114 avl_destroy(&sa->sa_layout_num_tree);
1115 mutex_destroy(&sa->sa_lock);
572e2857
BB		 1116 kmem_free(sa, sizeof (sa_os_t));
1117 return ((error == ECKSUM) ? EIO : error);
428870ff
BB		 1118}
1119
1120void
1121sa_tear_down(objset_t *os)
1122{
1123 sa_os_t *sa = os->os_sa;
1124 sa_lot_t *layout;
1125 void *cookie;
428870ff
BB		 1126
1127 kmem_free(sa->sa_user_table, sa->sa_user_table_sz);
1128
1129 /* Free up attr table */
1130
572e2857 1131 sa_free_attr_table(sa);
428870ff
BB		 1132
1133 cookie = NULL;
d1d7e268
MK		 1134 while ((layout =
1135 avl_destroy_nodes(&sa->sa_layout_hash_tree, &cookie))) {
428870ff 1136 sa_idx_tab_t *tab;
c65aa5b2 1137 while ((tab = list_head(&layout->lot_idx_tab))) {
424fd7c3 1138 ASSERT(zfs_refcount_count(&tab->sa_refcount));
428870ff
BB		 1139 sa_idx_tab_rele(os, tab);
1140 }
1141 }
1142
1143 cookie = NULL;
d1d7e268 1144 while ((layout = avl_destroy_nodes(&sa->sa_layout_num_tree, &cookie))) {
428870ff
BB		 1145 kmem_free(layout->lot_attrs,
1146 sizeof (sa_attr_type_t) * layout->lot_attr_count);
1147 kmem_free(layout, sizeof (sa_lot_t));
1148 }
1149
1150 avl_destroy(&sa->sa_layout_hash_tree);
1151 avl_destroy(&sa->sa_layout_num_tree);
58c4aa00 1152 mutex_destroy(&sa->sa_lock);
428870ff
BB		 1153
1154 kmem_free(sa, sizeof (sa_os_t));
1155 os->os_sa = NULL;
1156}
1157
65c7cc49 1158static void
428870ff
BB		 1159sa_build_idx_tab(void *hdr, void *attr_addr, sa_attr_type_t attr,
1160 uint16_t length, int length_idx, boolean_t var_length, void *userp)
1161{
1162 sa_idx_tab_t *idx_tab = userp;
1163
1164 if (var_length) {
1165 ASSERT(idx_tab->sa_variable_lengths);
1166 idx_tab->sa_variable_lengths[length_idx] = length;
1167 }
1168 TOC_ATTR_ENCODE(idx_tab->sa_idx_tab[attr], length_idx,
1169 (uint32_t)((uintptr_t)attr_addr - (uintptr_t)hdr));
1170}
1171
1172static void
1173sa_attr_iter(objset_t *os, sa_hdr_phys_t *hdr, dmu_object_type_t type,
1174 sa_iterfunc_t func, sa_lot_t *tab, void *userp)
1175{
1176 void *data_start;
1177 sa_lot_t *tb = tab;
1178 sa_lot_t search;
1179 avl_index_t loc;
1180 sa_os_t *sa = os->os_sa;
1181 int i;
1182 uint16_t *length_start = NULL;
1183 uint8_t length_idx = 0;
1184
1185 if (tab == NULL) {
1186 search.lot_num = SA_LAYOUT_NUM(hdr, type);
1187 tb = avl_find(&sa->sa_layout_num_tree, &search, &loc);
1188 ASSERT(tb);
1189 }
1190
1191 if (IS_SA_BONUSTYPE(type)) {
1192 data_start = (void *)P2ROUNDUP(((uintptr_t)hdr +
1193 offsetof(sa_hdr_phys_t, sa_lengths) +
1194 (sizeof (uint16_t) * tb->lot_var_sizes)), 8);
1195 length_start = hdr->sa_lengths;
1196 } else {
1197 data_start = hdr;
1198 }
1199
1200 for (i = 0; i != tb->lot_attr_count; i++) {
1201 int attr_length, reg_length;
1202 uint8_t idx_len;
1203
1204 reg_length = sa->sa_attr_table[tb->lot_attrs[i]].sa_length;
1205 if (reg_length) {
1206 attr_length = reg_length;
1207 idx_len = 0;
1208 } else {
1209 attr_length = length_start[length_idx];
1210 idx_len = length_idx++;
1211 }
1212
1213 func(hdr, data_start, tb->lot_attrs[i], attr_length,
1214 idx_len, reg_length == 0 ? B_TRUE : B_FALSE, userp);
1215
1216 data_start = (void *)P2ROUNDUP(((uintptr_t)data_start +
1217 attr_length), 8);
1218 }
1219}
1220
1221/*ARGSUSED*/
65c7cc49 1222static void
428870ff
BB		 1223sa_byteswap_cb(void *hdr, void *attr_addr, sa_attr_type_t attr,
1224 uint16_t length, int length_idx, boolean_t variable_length, void *userp)
1225{
1226 sa_handle_t *hdl = userp;
1227 sa_os_t *sa = hdl->sa_os->os_sa;
1228
1229 sa_bswap_table[sa->sa_attr_table[attr].sa_byteswap](attr_addr, length);
1230}
1231
65c7cc49 1232static void
428870ff
BB		 1233sa_byteswap(sa_handle_t *hdl, sa_buf_type_t buftype)
1234{
1235 sa_hdr_phys_t *sa_hdr_phys = SA_GET_HDR(hdl, buftype);
1236 dmu_buf_impl_t *db;
428870ff
BB		 1237 int num_lengths = 1;
1238 int i;
2a8ba608 1239 sa_os_t *sa __maybe_unused = hdl->sa_os->os_sa;
428870ff
BB		 1240
1241 ASSERT(MUTEX_HELD(&sa->sa_lock));
1242 if (sa_hdr_phys->sa_magic == SA_MAGIC)
1243 return;
1244
1245 db = SA_GET_DB(hdl, buftype);
1246
1247 if (buftype == SA_SPILL) {
1248 arc_release(db->db_buf, NULL);
1249 arc_buf_thaw(db->db_buf);
1250 }
1251
1252 sa_hdr_phys->sa_magic = BSWAP_32(sa_hdr_phys->sa_magic);
1253 sa_hdr_phys->sa_layout_info = BSWAP_16(sa_hdr_phys->sa_layout_info);
1254
1255 /*
4e33ba4c 1256 * Determine number of variable lengths in header
428870ff
BB		 1257 * The standard 8 byte header has one for free and a
1258 * 16 byte header would have 4 + 1;
1259 */
1260 if (SA_HDR_SIZE(sa_hdr_phys) > 8)
1261 num_lengths += (SA_HDR_SIZE(sa_hdr_phys) - 8) >> 1;
1262 for (i = 0; i != num_lengths; i++)
1263 sa_hdr_phys->sa_lengths[i] =
1264 BSWAP_16(sa_hdr_phys->sa_lengths[i]);
1265
1266 sa_attr_iter(hdl->sa_os, sa_hdr_phys, DMU_OT_SA,
1267 sa_byteswap_cb, NULL, hdl);
1268
1269 if (buftype == SA_SPILL)
1270 arc_buf_freeze(((dmu_buf_impl_t *)hdl->sa_spill)->db_buf);
1271}
1272
1273static int
1274sa_build_index(sa_handle_t *hdl, sa_buf_type_t buftype)
1275{
1276 sa_hdr_phys_t *sa_hdr_phys;
1277 dmu_buf_impl_t *db = SA_GET_DB(hdl, buftype);
1278 dmu_object_type_t bonustype = SA_BONUSTYPE_FROM_DB(db);
1279 sa_os_t *sa = hdl->sa_os->os_sa;
1280 sa_idx_tab_t *idx_tab;
1281
1282 sa_hdr_phys = SA_GET_HDR(hdl, buftype);
1283
1284 mutex_enter(&sa->sa_lock);
1285
1286 /* Do we need to byteswap? */
1287
1288 /* only check if not old znode */
1289 if (IS_SA_BONUSTYPE(bonustype) && sa_hdr_phys->sa_magic != SA_MAGIC &&
1290 sa_hdr_phys->sa_magic != 0) {
fba33c38
NC		 1291 if (BSWAP_32(sa_hdr_phys->sa_magic) != SA_MAGIC) {
1292 mutex_exit(&sa->sa_lock);
1293 zfs_dbgmsg("Buffer Header: %x != SA_MAGIC:%x "
1294 "object=%#llx\n", sa_hdr_phys->sa_magic, SA_MAGIC,
1295 db->db.db_object);
1296 return (SET_ERROR(EIO));
1297 }
428870ff
BB		 1298 sa_byteswap(hdl, buftype);
1299 }
1300
1301 idx_tab = sa_find_idx_tab(hdl->sa_os, bonustype, sa_hdr_phys);
1302
1303 if (buftype == SA_BONUS)
1304 hdl->sa_bonus_tab = idx_tab;
1305 else
1306 hdl->sa_spill_tab = idx_tab;
1307
1308 mutex_exit(&sa->sa_lock);
1309 return (0);
1310}
1311
1312/*ARGSUSED*/
0c66c32d 1313static void
39efbde7 1314sa_evict_sync(void *dbu)
428870ff 1315{
0c66c32d 1316 panic("evicting sa dbuf\n");
428870ff
BB		 1317}
1318
1319static void
1320sa_idx_tab_rele(objset_t *os, void *arg)
1321{
1322 sa_os_t *sa = os->os_sa;
1323 sa_idx_tab_t *idx_tab = arg;
1324
1325 if (idx_tab == NULL)
1326 return;
1327
1328 mutex_enter(&sa->sa_lock);
424fd7c3 1329 if (zfs_refcount_remove(&idx_tab->sa_refcount, NULL) == 0) {
428870ff
BB		 1330 list_remove(&idx_tab->sa_layout->lot_idx_tab, idx_tab);
1331 if (idx_tab->sa_variable_lengths)
1332 kmem_free(idx_tab->sa_variable_lengths,
1333 sizeof (uint16_t) *
1334 idx_tab->sa_layout->lot_var_sizes);
424fd7c3 1335 zfs_refcount_destroy(&idx_tab->sa_refcount);
428870ff
BB		 1336 kmem_free(idx_tab->sa_idx_tab,
1337 sizeof (uint32_t) * sa->sa_num_attrs);
1338 kmem_free(idx_tab, sizeof (sa_idx_tab_t));
1339 }
1340 mutex_exit(&sa->sa_lock);
1341}
1342
1343static void
1344sa_idx_tab_hold(objset_t *os, sa_idx_tab_t *idx_tab)
1345{
2a8ba608 1346 sa_os_t *sa __maybe_unused = os->os_sa;
428870ff
BB		 1347
1348 ASSERT(MUTEX_HELD(&sa->sa_lock));
c13060e4 1349 (void) zfs_refcount_add(&idx_tab->sa_refcount, NULL);
428870ff
BB		 1350}
1351
0ece356d
BB		 1352void
1353sa_spill_rele(sa_handle_t *hdl)
1354{
1355 mutex_enter(&hdl->sa_lock);
1356 if (hdl->sa_spill) {
1357 sa_idx_tab_rele(hdl->sa_os, hdl->sa_spill_tab);
1358 dmu_buf_rele(hdl->sa_spill, NULL);
1359 hdl->sa_spill = NULL;
1360 hdl->sa_spill_tab = NULL;
1361 }
1362 mutex_exit(&hdl->sa_lock);
1363}
1364
428870ff
BB		 1365void
1366sa_handle_destroy(sa_handle_t *hdl)
1367{
0c66c32d
JG		 1368 dmu_buf_t *db = hdl->sa_bonus;
1369
428870ff 1370 mutex_enter(&hdl->sa_lock);
0c66c32d 1371 (void) dmu_buf_remove_user(db, &hdl->sa_dbu);
428870ff 1372
63b33e87 1373 if (hdl->sa_bonus_tab)
428870ff 1374 sa_idx_tab_rele(hdl->sa_os, hdl->sa_bonus_tab);
63b33e87
JG		 1375
1376 if (hdl->sa_spill_tab)
428870ff 1377 sa_idx_tab_rele(hdl->sa_os, hdl->sa_spill_tab);
428870ff
BB		 1378
1379 dmu_buf_rele(hdl->sa_bonus, NULL);
1380
1381 if (hdl->sa_spill)
0eb8ba6a 1382 dmu_buf_rele(hdl->sa_spill, NULL);
428870ff
BB		 1383 mutex_exit(&hdl->sa_lock);
1384
1385 kmem_cache_free(sa_cache, hdl);
1386}
1387
1388int
1389sa_handle_get_from_db(objset_t *os, dmu_buf_t *db, void *userp,
1390 sa_handle_type_t hdl_type, sa_handle_t **handlepp)
1391{
1392 int error = 0;
0c66c32d 1393 sa_handle_t *handle = NULL;
428870ff 1394#ifdef ZFS_DEBUG
1fde1e37
BB		 1395 dmu_object_info_t doi;
1396
428870ff
BB		 1397 dmu_object_info_from_db(db, &doi);
1398 ASSERT(doi.doi_bonus_type == DMU_OT_SA ||
1399 doi.doi_bonus_type == DMU_OT_ZNODE);
1400#endif
1401 /* find handle, if it exists */
1402 /* if one doesn't exist then create a new one, and initialize it */
1403
0c66c32d
JG		 1404 if (hdl_type == SA_HDL_SHARED)
1405 handle = dmu_buf_get_user(db);
1406
428870ff 1407 if (handle == NULL) {
0c66c32d
JG		 1408 sa_handle_t *winner = NULL;
1409
428870ff 1410 handle = kmem_cache_alloc(sa_cache, KM_SLEEP);
39efbde7
GM		 1411 handle->sa_dbu.dbu_evict_func_sync = NULL;
1412 handle->sa_dbu.dbu_evict_func_async = NULL;
428870ff
BB		 1413 handle->sa_userp = userp;
1414 handle->sa_bonus = db;
1415 handle->sa_os = os;
1416 handle->sa_spill = NULL;
63b33e87
JG		 1417 handle->sa_bonus_tab = NULL;
1418 handle->sa_spill_tab = NULL;
428870ff
BB		 1419
1420 error = sa_build_index(handle, SA_BONUS);
428870ff 1421
0c66c32d 1422 if (hdl_type == SA_HDL_SHARED) {
39efbde7
GM		 1423 dmu_buf_init_user(&handle->sa_dbu, sa_evict_sync, NULL,
1424 NULL);
0c66c32d
JG		 1425 winner = dmu_buf_set_user_ie(db, &handle->sa_dbu);
1426 }
1427
1428 if (winner != NULL) {
428870ff 1429 kmem_cache_free(sa_cache, handle);
0c66c32d 1430 handle = winner;
428870ff
BB		 1431 }
1432 }
1433 *handlepp = handle;
1434
1435 return (error);
1436}
1437
1438int
1439sa_handle_get(objset_t *objset, uint64_t objid, void *userp,
1440 sa_handle_type_t hdl_type, sa_handle_t **handlepp)
1441{
1442 dmu_buf_t *db;
1443 int error;
1444
c65aa5b2 1445 if ((error = dmu_bonus_hold(objset, objid, NULL, &db)))
428870ff
BB		 1446 return (error);
1447
1448 return (sa_handle_get_from_db(objset, db, userp, hdl_type,
1449 handlepp));
1450}
1451
1452int
1453sa_buf_hold(objset_t *objset, uint64_t obj_num, void *tag, dmu_buf_t **db)
1454{
1455 return (dmu_bonus_hold(objset, obj_num, tag, db));
1456}
1457
1458void
1459sa_buf_rele(dmu_buf_t *db, void *tag)
1460{
1461 dmu_buf_rele(db, tag);
1462}
1463
65c7cc49 1464static int
428870ff
BB		 1465sa_lookup_impl(sa_handle_t *hdl, sa_bulk_attr_t *bulk, int count)
1466{
1467 ASSERT(hdl);
1468 ASSERT(MUTEX_HELD(&hdl->sa_lock));
1469 return (sa_attr_op(hdl, bulk, count, SA_LOOKUP, NULL));
1470}
1471
9c5167d1
NF		 1472static int
1473sa_lookup_locked(sa_handle_t *hdl, sa_attr_type_t attr, void *buf,
1474 uint32_t buflen)
428870ff
BB		 1475{
1476 int error;
1477 sa_bulk_attr_t bulk;
1478
43b4935e
NB		 1479 VERIFY3U(buflen, <=, SA_ATTR_MAX_LEN);
1480
428870ff
BB		 1481 bulk.sa_attr = attr;
1482 bulk.sa_data = buf;
1483 bulk.sa_length = buflen;
1484 bulk.sa_data_func = NULL;
1485
1486 ASSERT(hdl);
428870ff 1487 error = sa_lookup_impl(hdl, &bulk, 1);
9c5167d1
NF		 1488 return (error);
1489}
1490
1491int
1492sa_lookup(sa_handle_t *hdl, sa_attr_type_t attr, void *buf, uint32_t buflen)
1493{
1494 int error;
1495
1496 mutex_enter(&hdl->sa_lock);
1497 error = sa_lookup_locked(hdl, attr, buf, buflen);
428870ff 1498 mutex_exit(&hdl->sa_lock);
9c5167d1 1499
428870ff
BB		 1500 return (error);
1501}
1502
1503#ifdef _KERNEL
1504int
d0cd9a5c 1505sa_lookup_uio(sa_handle_t *hdl, sa_attr_type_t attr, zfs_uio_t *uio)
428870ff
BB		 1506{
1507 int error;
1508 sa_bulk_attr_t bulk;
1509
1510 bulk.sa_data = NULL;
1511 bulk.sa_attr = attr;
1512 bulk.sa_data_func = NULL;
1513
1514 ASSERT(hdl);
1515
1516 mutex_enter(&hdl->sa_lock);
572e2857 1517 if ((error = sa_attr_op(hdl, &bulk, 1, SA_LOOKUP, NULL)) == 0) {
d0cd9a5c
BA		 1518 error = zfs_uiomove((void *)bulk.sa_addr, MIN(bulk.sa_size,
1519 zfs_uio_resid(uio)), UIO_READ, uio);
428870ff
BB		 1520 }
1521 mutex_exit(&hdl->sa_lock);
1522 return (error);
428870ff 1523}
9c5167d1
NF		 1524
1525/*
1526 * For the existed object that is upgraded from old system, its ondisk layout
1527 * has no slot for the project ID attribute. But quota accounting logic needs
1528 * to access related slots by offset directly. So we need to adjust these old
1529 * objects' layout to make the project ID to some unified and fixed offset.
1530 */
1531int
1532sa_add_projid(sa_handle_t *hdl, dmu_tx_t *tx, uint64_t projid)
1533{
1534 znode_t *zp = sa_get_userdata(hdl);
1535 dmu_buf_t *db = sa_get_db(hdl);
1536 zfsvfs_t *zfsvfs = ZTOZSB(zp);
1537 int count = 0, err = 0;
1538 sa_bulk_attr_t *bulk, *attrs;
1539 zfs_acl_locator_cb_t locate = { 0 };
1540 uint64_t uid, gid, mode, rdev, xattr = 0, parent, gen, links;
1541 uint64_t crtime[2], mtime[2], ctime[2], atime[2];
1542 zfs_acl_phys_t znode_acl = { 0 };
1543 char scanstamp[AV_SCANSTAMP_SZ];
1544
1545 if (zp->z_acl_cached == NULL) {
1546 zfs_acl_t *aclp;
1547
1548 mutex_enter(&zp->z_acl_lock);
1549 err = zfs_acl_node_read(zp, B_FALSE, &aclp, B_FALSE);
1550 mutex_exit(&zp->z_acl_lock);
1551 if (err != 0 && err != ENOENT)
1552 return (err);
1553 }
1554
1555 bulk = kmem_zalloc(sizeof (sa_bulk_attr_t) * ZPL_END, KM_SLEEP);
1556 attrs = kmem_zalloc(sizeof (sa_bulk_attr_t) * ZPL_END, KM_SLEEP);
1557 mutex_enter(&hdl->sa_lock);
1558 mutex_enter(&zp->z_lock);
1559
1560 err = sa_lookup_locked(hdl, SA_ZPL_PROJID(zfsvfs), &projid,
1561 sizeof (uint64_t));
1562 if (unlikely(err == 0))
1563 /* Someone has added project ID attr by race. */
1564 err = EEXIST;
1565 if (err != ENOENT)
1566 goto out;
1567
1568 /* First do a bulk query of the attributes that aren't cached */
1569 if (zp->z_is_sa) {
1570 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zfsvfs), NULL,
1571 &mode, 8);
1572 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zfsvfs), NULL,
1573 &gen, 8);
1574 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zfsvfs), NULL,
1575 &uid, 8);
1576 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zfsvfs), NULL,
1577 &gid, 8);
1578 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_PARENT(zfsvfs), NULL,
1579 &parent, 8);
1580 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zfsvfs), NULL,
1581 &atime, 16);
1582 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zfsvfs), NULL,
1583 &mtime, 16);
1584 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zfsvfs), NULL,
1585 &ctime, 16);
1586 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CRTIME(zfsvfs), NULL,
1587 &crtime, 16);
6360e277 1588 if (Z_ISBLK(ZTOTYPE(zp)) || Z_ISCHR(ZTOTYPE(zp)))
9c5167d1
NF		 1589 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_RDEV(zfsvfs), NULL,
1590 &rdev, 8);
1591 } else {
1592 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zfsvfs), NULL,
1593 &atime, 16);
1594 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zfsvfs), NULL,
1595 &mtime, 16);
1596 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zfsvfs), NULL,
1597 &ctime, 16);
1598 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CRTIME(zfsvfs), NULL,
1599 &crtime, 16);
1600 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zfsvfs), NULL,
1601 &gen, 8);
1602 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zfsvfs), NULL,
1603 &mode, 8);
1604 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_PARENT(zfsvfs), NULL,
1605 &parent, 8);
1606 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_XATTR(zfsvfs), NULL,
1607 &xattr, 8);
1608 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_RDEV(zfsvfs), NULL,
1609 &rdev, 8);
1610 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zfsvfs), NULL,
1611 &uid, 8);
1612 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zfsvfs), NULL,
1613 &gid, 8);
1614 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ZNODE_ACL(zfsvfs), NULL,
1615 &znode_acl, 88);
1616 }
1617 err = sa_bulk_lookup_locked(hdl, bulk, count);
1618 if (err != 0)
1619 goto out;
1620
1621 err = sa_lookup_locked(hdl, SA_ZPL_XATTR(zfsvfs), &xattr, 8);
1622 if (err != 0 && err != ENOENT)
1623 goto out;
1624
1625 zp->z_projid = projid;
1626 zp->z_pflags |= ZFS_PROJID;
6360e277 1627 links = ZTONLNK(zp);
9c5167d1
NF		 1628 count = 0;
1629 err = 0;
1630
1631 SA_ADD_BULK_ATTR(attrs, count, SA_ZPL_MODE(zfsvfs), NULL, &mode, 8);
1632 SA_ADD_BULK_ATTR(attrs, count, SA_ZPL_SIZE(zfsvfs), NULL,
1633 &zp->z_size, 8);
1634 SA_ADD_BULK_ATTR(attrs, count, SA_ZPL_GEN(zfsvfs), NULL, &gen, 8);
1635 SA_ADD_BULK_ATTR(attrs, count, SA_ZPL_UID(zfsvfs), NULL, &uid, 8);
1636 SA_ADD_BULK_ATTR(attrs, count, SA_ZPL_GID(zfsvfs), NULL, &gid, 8);
1637 SA_ADD_BULK_ATTR(attrs, count, SA_ZPL_PARENT(zfsvfs), NULL, &parent, 8);
1638 SA_ADD_BULK_ATTR(attrs, count, SA_ZPL_FLAGS(zfsvfs), NULL,
1639 &zp->z_pflags, 8);
1640 SA_ADD_BULK_ATTR(attrs, count, SA_ZPL_ATIME(zfsvfs), NULL, &atime, 16);
1641 SA_ADD_BULK_ATTR(attrs, count, SA_ZPL_MTIME(zfsvfs), NULL, &mtime, 16);
1642 SA_ADD_BULK_ATTR(attrs, count, SA_ZPL_CTIME(zfsvfs), NULL, &ctime, 16);
1643 SA_ADD_BULK_ATTR(attrs, count, SA_ZPL_CRTIME(zfsvfs), NULL,
1644 &crtime, 16);
1645 SA_ADD_BULK_ATTR(attrs, count, SA_ZPL_LINKS(zfsvfs), NULL, &links, 8);
1646 SA_ADD_BULK_ATTR(attrs, count, SA_ZPL_PROJID(zfsvfs), NULL, &projid, 8);
1647
6360e277 1648 if (Z_ISBLK(ZTOTYPE(zp)) || Z_ISCHR(ZTOTYPE(zp)))
9c5167d1
NF		 1649 SA_ADD_BULK_ATTR(attrs, count, SA_ZPL_RDEV(zfsvfs), NULL,
1650 &rdev, 8);
1651
1652 if (zp->z_acl_cached != NULL) {
1653 SA_ADD_BULK_ATTR(attrs, count, SA_ZPL_DACL_COUNT(zfsvfs), NULL,
1654 &zp->z_acl_cached->z_acl_count, 8);
1655 if (zp->z_acl_cached->z_version < ZFS_ACL_VERSION_FUID)
1656 zfs_acl_xform(zp, zp->z_acl_cached, CRED());
1657 locate.cb_aclp = zp->z_acl_cached;
1658 SA_ADD_BULK_ATTR(attrs, count, SA_ZPL_DACL_ACES(zfsvfs),
1659 zfs_acl_data_locator, &locate,
1660 zp->z_acl_cached->z_acl_bytes);
1661 }
1662
1663 if (xattr)
1664 SA_ADD_BULK_ATTR(attrs, count, SA_ZPL_XATTR(zfsvfs), NULL,
1665 &xattr, 8);
1666
1667 if (zp->z_pflags & ZFS_BONUS_SCANSTAMP) {
1668 bcopy((caddr_t)db->db_data + ZFS_OLD_ZNODE_PHYS_SIZE,
1669 scanstamp, AV_SCANSTAMP_SZ);
1670 SA_ADD_BULK_ATTR(attrs, count, SA_ZPL_SCANSTAMP(zfsvfs), NULL,
1671 scanstamp, AV_SCANSTAMP_SZ);
1672 zp->z_pflags &= ~ZFS_BONUS_SCANSTAMP;
1673 }
1674
1675 VERIFY(dmu_set_bonustype(db, DMU_OT_SA, tx) == 0);
1676 VERIFY(sa_replace_all_by_template_locked(hdl, attrs, count, tx) == 0);
1677 if (znode_acl.z_acl_extern_obj) {
1678 VERIFY(0 == dmu_object_free(zfsvfs->z_os,
1679 znode_acl.z_acl_extern_obj, tx));
1680 }
1681
1682 zp->z_is_sa = B_TRUE;
1683
1684out:
1685 mutex_exit(&zp->z_lock);
1686 mutex_exit(&hdl->sa_lock);
1687 kmem_free(attrs, sizeof (sa_bulk_attr_t) * ZPL_END);
1688 kmem_free(bulk, sizeof (sa_bulk_attr_t) * ZPL_END);
1689 return (err);
1690}
428870ff
BB		 1691#endif
1692
f6d4ce8e
MA		 1693static sa_idx_tab_t *
1694sa_find_idx_tab(objset_t *os, dmu_object_type_t bonustype, sa_hdr_phys_t *hdr)
428870ff
BB		 1695{
1696 sa_idx_tab_t *idx_tab;
428870ff
BB		 1697 sa_os_t *sa = os->os_sa;
1698 sa_lot_t *tb, search;
1699 avl_index_t loc;
1700
1701 /*
1702 * Deterimine layout number. If SA node and header == 0 then
1703 * force the index table to the dummy "1" empty layout.
1704 *
1705 * The layout number would only be zero for a newly created file
1706 * that has not added any attributes yet, or with crypto enabled which
1707 * doesn't write any attributes to the bonus buffer.
1708 */
1709
1710 search.lot_num = SA_LAYOUT_NUM(hdr, bonustype);
1711
1712 tb = avl_find(&sa->sa_layout_num_tree, &search, &loc);
1713
1714 /* Verify header size is consistent with layout information */
1715 ASSERT(tb);
d6320ddb
BB		 1716 ASSERT((IS_SA_BONUSTYPE(bonustype) &&
1717 SA_HDR_SIZE_MATCH_LAYOUT(hdr, tb)) || !IS_SA_BONUSTYPE(bonustype) ||
428870ff
BB		 1718 (IS_SA_BONUSTYPE(bonustype) && hdr->sa_layout_info == 0));
1719
1720 /*
1721 * See if any of the already existing TOC entries can be reused?
1722 */
1723
1724 for (idx_tab = list_head(&tb->lot_idx_tab); idx_tab;
1725 idx_tab = list_next(&tb->lot_idx_tab, idx_tab)) {
1726 boolean_t valid_idx = B_TRUE;
1727 int i;
1728
1729 if (tb->lot_var_sizes != 0 &&
1730 idx_tab->sa_variable_lengths != NULL) {
1731 for (i = 0; i != tb->lot_var_sizes; i++) {
1732 if (hdr->sa_lengths[i] !=
1733 idx_tab->sa_variable_lengths[i]) {
1734 valid_idx = B_FALSE;
1735 break;
1736 }
1737 }
1738 }
1739 if (valid_idx) {
1740 sa_idx_tab_hold(os, idx_tab);
1741 return (idx_tab);
1742 }
1743 }
1744
1745 /* No such luck, create a new entry */
79c76d5b 1746 idx_tab = kmem_zalloc(sizeof (sa_idx_tab_t), KM_SLEEP);
428870ff 1747 idx_tab->sa_idx_tab =
79c76d5b 1748 kmem_zalloc(sizeof (uint32_t) * sa->sa_num_attrs, KM_SLEEP);
428870ff 1749 idx_tab->sa_layout = tb;
424fd7c3 1750 zfs_refcount_create(&idx_tab->sa_refcount);
428870ff
BB		 1751 if (tb->lot_var_sizes)
1752 idx_tab->sa_variable_lengths = kmem_alloc(sizeof (uint16_t) *
79c76d5b 1753 tb->lot_var_sizes, KM_SLEEP);
428870ff
BB		 1754
1755 sa_attr_iter(os, hdr, bonustype, sa_build_idx_tab,
1756 tb, idx_tab);
1757 sa_idx_tab_hold(os, idx_tab); /* one hold for consumer */
1758 sa_idx_tab_hold(os, idx_tab); /* one for layout */
1759 list_insert_tail(&tb->lot_idx_tab, idx_tab);
1760 return (idx_tab);
1761}
1762
1763void
1764sa_default_locator(void **dataptr, uint32_t *len, uint32_t total_len,
1765 boolean_t start, void *userdata)
1766{
1767 ASSERT(start);
1768
1769 *dataptr = userdata;
1770 *len = total_len;
1771}
1772
1773static void
1774sa_attr_register_sync(sa_handle_t *hdl, dmu_tx_t *tx)
1775{
1776 uint64_t attr_value = 0;
1777 sa_os_t *sa = hdl->sa_os->os_sa;
1778 sa_attr_table_t *tb = sa->sa_attr_table;
1779 int i;
1780
1781 mutex_enter(&sa->sa_lock);
1782
b8864a23 1783 if (!sa->sa_need_attr_registration || sa->sa_master_obj == 0) {
428870ff
BB		 1784 mutex_exit(&sa->sa_lock);
1785 return;
1786 }
1787
b8864a23 1788 if (sa->sa_reg_attr_obj == 0) {
9ae529ec
CS		 1789 sa->sa_reg_attr_obj = zap_create_link(hdl->sa_os,
1790 DMU_OT_SA_ATTR_REGISTRATION,
1791 sa->sa_master_obj, SA_REGISTRY, tx);
428870ff
BB		 1792 }
1793 for (i = 0; i != sa->sa_num_attrs; i++) {
1794 if (sa->sa_attr_table[i].sa_registered)
1795 continue;
1796 ATTR_ENCODE(attr_value, tb[i].sa_attr, tb[i].sa_length,
1797 tb[i].sa_byteswap);
1798 VERIFY(0 == zap_update(hdl->sa_os, sa->sa_reg_attr_obj,
1799 tb[i].sa_name, 8, 1, &attr_value, tx));
1800 tb[i].sa_registered = B_TRUE;
1801 }
1802 sa->sa_need_attr_registration = B_FALSE;
1803 mutex_exit(&sa->sa_lock);
1804}
1805
1806/*
1807 * Replace all attributes with attributes specified in template.
1808 * If dnode had a spill buffer then those attributes will be
1809 * also be replaced, possibly with just an empty spill block
1810 *
1811 * This interface is intended to only be used for bulk adding of
1812 * attributes for a new file. It will also be used by the ZPL
1813 * when converting and old formatted znode to native SA support.
1814 */
1815int
1816sa_replace_all_by_template_locked(sa_handle_t *hdl, sa_bulk_attr_t *attr_desc,
1817 int attr_count, dmu_tx_t *tx)
1818{
1819 sa_os_t *sa = hdl->sa_os->os_sa;
1820
1821 if (sa->sa_need_attr_registration)
1822 sa_attr_register_sync(hdl, tx);
1823 return (sa_build_layouts(hdl, attr_desc, attr_count, tx));
1824}
1825
1826int
1827sa_replace_all_by_template(sa_handle_t *hdl, sa_bulk_attr_t *attr_desc,
1828 int attr_count, dmu_tx_t *tx)
1829{
1830 int error;
1831
1832 mutex_enter(&hdl->sa_lock);
1833 error = sa_replace_all_by_template_locked(hdl, attr_desc,
1834 attr_count, tx);
1835 mutex_exit(&hdl->sa_lock);
1836 return (error);
1837}
1838
1839/*
76fe529b
GM		 1840 * Add/remove a single attribute or replace a variable-sized attribute value
1841 * with a value of a different size, and then rewrite the entire set
428870ff 1842 * of attributes.
76fe529b
GM		 1843 * Same-length attribute value replacement (including fixed-length attributes)
1844 * is handled more efficiently by the upper layers.
428870ff
BB		 1845 */
1846static int
1847sa_modify_attrs(sa_handle_t *hdl, sa_attr_type_t newattr,
1848 sa_data_op_t action, sa_data_locator_t *locator, void *datastart,
1849 uint16_t buflen, dmu_tx_t *tx)
1850{
1851 sa_os_t *sa = hdl->sa_os->os_sa;
572e2857
BB		 1852 dmu_buf_impl_t *db = (dmu_buf_impl_t *)hdl->sa_bonus;
1853 dnode_t *dn;
428870ff
BB		 1854 sa_bulk_attr_t *attr_desc;
1855 void *old_data[2];
1856 int bonus_attr_count = 0;
82a37189 1857 int bonus_data_size = 0;
81971b13 1858 int spill_data_size = 0;
428870ff
BB		 1859 int spill_attr_count = 0;
1860 int error;
76fe529b 1861 uint16_t length, reg_length;
428870ff
BB		 1862 int i, j, k, length_idx;
1863 sa_hdr_phys_t *hdr;
1864 sa_idx_tab_t *idx_tab;
1865 int attr_count;
1866 int count;
1867
1868 ASSERT(MUTEX_HELD(&hdl->sa_lock));
1869
1870 /* First make of copy of the old data */
1871
572e2857
BB		 1872 DB_DNODE_ENTER(db);
1873 dn = DB_DNODE(db);
1874 if (dn->dn_bonuslen != 0) {
428870ff
BB		 1875 bonus_data_size = hdl->sa_bonus->db_size;
1876 old_data[0] = kmem_alloc(bonus_data_size, KM_SLEEP);
1877 bcopy(hdl->sa_bonus->db_data, old_data[0],
1878 hdl->sa_bonus->db_size);
1879 bonus_attr_count = hdl->sa_bonus_tab->sa_layout->lot_attr_count;
1880 } else {
1881 old_data[0] = NULL;
1882 }
572e2857 1883 DB_DNODE_EXIT(db);
428870ff
BB		 1884
1885 /* Bring spill buffer online if it isn't currently */
1886
572e2857 1887 if ((error = sa_get_spill(hdl)) == 0) {
81971b13 1888 spill_data_size = hdl->sa_spill->db_size;
a3fd9d9e 1889 old_data[1] = vmem_alloc(spill_data_size, KM_SLEEP);
428870ff
BB		 1890 bcopy(hdl->sa_spill->db_data, old_data[1],
1891 hdl->sa_spill->db_size);
1892 spill_attr_count =
1893 hdl->sa_spill_tab->sa_layout->lot_attr_count;
572e2857
BB		 1894 } else if (error && error != ENOENT) {
1895 if (old_data[0])
1896 kmem_free(old_data[0], bonus_data_size);
1897 return (error);
428870ff
BB		 1898 } else {
1899 old_data[1] = NULL;
1900 }
1901
1902 /* build descriptor of all attributes */
1903
1904 attr_count = bonus_attr_count + spill_attr_count;
1905 if (action == SA_ADD)
1906 attr_count++;
1907 else if (action == SA_REMOVE)
1908 attr_count--;
1909
1910 attr_desc = kmem_zalloc(sizeof (sa_bulk_attr_t) * attr_count, KM_SLEEP);
1911
1912 /*
1913 * loop through bonus and spill buffer if it exists, and
1914 * build up new attr_descriptor to reset the attributes
1915 */
1916 k = j = 0;
1917 count = bonus_attr_count;
1918 hdr = SA_GET_HDR(hdl, SA_BONUS);
1919 idx_tab = SA_IDX_TAB_GET(hdl, SA_BONUS);
1920 for (; k != 2; k++) {
5d862cb0
TC		 1921 /*
1922 * Iterate over each attribute in layout. Fetch the
1923 * size of variable-length attributes needing rewrite
1924 * from sa_lengths[].
1925 */
428870ff
BB		 1926 for (i = 0, length_idx = 0; i != count; i++) {
1927 sa_attr_type_t attr;
1928
1929 attr = idx_tab->sa_layout->lot_attrs[i];
76fe529b
GM		 1930 reg_length = SA_REGISTERED_LEN(sa, attr);
1931 if (reg_length == 0) {
1932 length = hdr->sa_lengths[length_idx];
1933 length_idx++;
1934 } else {
1935 length = reg_length;
1936 }
428870ff 1937 if (attr == newattr) {
76fe529b
GM		 1938 /*
1939 * There is nothing to do for SA_REMOVE,
1940 * so it is just skipped.
1941 */
b0cf0676 1942 if (action == SA_REMOVE)
428870ff 1943 continue;
76fe529b
GM		 1944
1945 /*
1946 * Duplicate attributes are not allowed, so the
1947 * action can not be SA_ADD here.
1948 */
1949 ASSERT3S(action, ==, SA_REPLACE);
1950
1951 /*
1952 * Only a variable-sized attribute can be
1953 * replaced here, and its size must be changing.
1954 */
1955 ASSERT3U(reg_length, ==, 0);
1956 ASSERT3U(length, !=, buflen);
428870ff
BB		 1957 SA_ADD_BULK_ATTR(attr_desc, j, attr,
1958 locator, datastart, buflen);
1959 } else {
428870ff
BB		 1960 SA_ADD_BULK_ATTR(attr_desc, j, attr,
1961 NULL, (void *)
1962 (TOC_OFF(idx_tab->sa_idx_tab[attr]) +
1963 (uintptr_t)old_data[k]), length);
1964 }
1965 }
1966 if (k == 0 && hdl->sa_spill) {
1967 hdr = SA_GET_HDR(hdl, SA_SPILL);
1968 idx_tab = SA_IDX_TAB_GET(hdl, SA_SPILL);
1969 count = spill_attr_count;
1970 } else {
1971 break;
1972 }
1973 }
1974 if (action == SA_ADD) {
76fe529b
GM		 1975 reg_length = SA_REGISTERED_LEN(sa, newattr);
1976 IMPLY(reg_length != 0, reg_length == buflen);
428870ff 1977 SA_ADD_BULK_ATTR(attr_desc, j, newattr, locator,
76fe529b 1978 datastart, buflen);
428870ff 1979 }
76fe529b 1980 ASSERT3U(j, ==, attr_count);
428870ff
BB		 1981
1982 error = sa_build_layouts(hdl, attr_desc, attr_count, tx);
1983
1984 if (old_data[0])
1985 kmem_free(old_data[0], bonus_data_size);
1986 if (old_data[1])
a3fd9d9e 1987 vmem_free(old_data[1], spill_data_size);
428870ff
BB		 1988 kmem_free(attr_desc, sizeof (sa_bulk_attr_t) * attr_count);
1989
1990 return (error);
1991}
1992
1993static int
1994sa_bulk_update_impl(sa_handle_t *hdl, sa_bulk_attr_t *bulk, int count,
1995 dmu_tx_t *tx)
1996{
1997 int error;
1998 sa_os_t *sa = hdl->sa_os->os_sa;
1999 dmu_object_type_t bonustype;
a4758738 2000 dmu_buf_t *saved_spill;
428870ff
BB		 2001
2002 ASSERT(hdl);
2003 ASSERT(MUTEX_HELD(&hdl->sa_lock));
2004
a4758738
JW		 2005 bonustype = SA_BONUSTYPE_FROM_DB(SA_GET_DB(hdl, SA_BONUS));
2006 saved_spill = hdl->sa_spill;
2007
428870ff
BB		 2008 /* sync out registration table if necessary */
2009 if (sa->sa_need_attr_registration)
2010 sa_attr_register_sync(hdl, tx);
2011
2012 error = sa_attr_op(hdl, bulk, count, SA_UPDATE, tx);
2013 if (error == 0 && !IS_SA_BONUSTYPE(bonustype) && sa->sa_update_cb)
2014 sa->sa_update_cb(hdl, tx);
2015
a4758738
JW		 2016 /*
2017 * If saved_spill is NULL and current sa_spill is not NULL that
2018 * means we increased the refcount of the spill buffer through
2019 * sa_get_spill() or dmu_spill_hold_by_dnode(). Therefore we
2020 * must release the hold before calling dmu_tx_commit() to avoid
2021 * making a copy of this buffer in dbuf_sync_leaf() due to the
2022 * reference count now being greater than 1.
2023 */
2024 if (!saved_spill && hdl->sa_spill) {
2025 if (hdl->sa_spill_tab) {
2026 sa_idx_tab_rele(hdl->sa_os, hdl->sa_spill_tab);
2027 hdl->sa_spill_tab = NULL;
2028 }
2029
0eb8ba6a 2030 dmu_buf_rele(hdl->sa_spill, NULL);
a4758738
JW		 2031 hdl->sa_spill = NULL;
2032 }
2033
428870ff
BB		 2034 return (error);
2035}
2036
2037/*
2038 * update or add new attribute
2039 */
2040int
2041sa_update(sa_handle_t *hdl, sa_attr_type_t type,
2042 void *buf, uint32_t buflen, dmu_tx_t *tx)
2043{
2044 int error;
2045 sa_bulk_attr_t bulk;
2046
43b4935e
NB		 2047 VERIFY3U(buflen, <=, SA_ATTR_MAX_LEN);
2048
428870ff
BB		 2049 bulk.sa_attr = type;
2050 bulk.sa_data_func = NULL;
2051 bulk.sa_length = buflen;
2052 bulk.sa_data = buf;
2053
2054 mutex_enter(&hdl->sa_lock);
2055 error = sa_bulk_update_impl(hdl, &bulk, 1, tx);
2056 mutex_exit(&hdl->sa_lock);
2057 return (error);
2058}
2059
428870ff
BB		 2060/*
2061 * Return size of an attribute
2062 */
2063
2064int
2065sa_size(sa_handle_t *hdl, sa_attr_type_t attr, int *size)
2066{
2067 sa_bulk_attr_t bulk;
572e2857 2068 int error;
428870ff
BB		 2069
2070 bulk.sa_data = NULL;
2071 bulk.sa_attr = attr;
2072 bulk.sa_data_func = NULL;
2073
2074 ASSERT(hdl);
2075 mutex_enter(&hdl->sa_lock);
572e2857 2076 if ((error = sa_attr_op(hdl, &bulk, 1, SA_LOOKUP, NULL)) != 0) {
428870ff 2077 mutex_exit(&hdl->sa_lock);
572e2857 2078 return (error);
428870ff
BB		 2079 }
2080 *size = bulk.sa_size;
2081
2082 mutex_exit(&hdl->sa_lock);
2083 return (0);
2084}
2085
2086int
2087sa_bulk_lookup_locked(sa_handle_t *hdl, sa_bulk_attr_t *attrs, int count)
2088{
2089 ASSERT(hdl);
2090 ASSERT(MUTEX_HELD(&hdl->sa_lock));
2091 return (sa_lookup_impl(hdl, attrs, count));
2092}
2093
2094int
2095sa_bulk_lookup(sa_handle_t *hdl, sa_bulk_attr_t *attrs, int count)
2096{
2097 int error;
2098
2099 ASSERT(hdl);
2100 mutex_enter(&hdl->sa_lock);
2101 error = sa_bulk_lookup_locked(hdl, attrs, count);
2102 mutex_exit(&hdl->sa_lock);
2103 return (error);
2104}
2105
2106int
2107sa_bulk_update(sa_handle_t *hdl, sa_bulk_attr_t *attrs, int count, dmu_tx_t *tx)
2108{
2109 int error;
2110
2111 ASSERT(hdl);
2112 mutex_enter(&hdl->sa_lock);
2113 error = sa_bulk_update_impl(hdl, attrs, count, tx);
2114 mutex_exit(&hdl->sa_lock);
2115 return (error);
2116}
2117
2118int
2119sa_remove(sa_handle_t *hdl, sa_attr_type_t attr, dmu_tx_t *tx)
2120{
2121 int error;
2122
2123 mutex_enter(&hdl->sa_lock);
2124 error = sa_modify_attrs(hdl, attr, SA_REMOVE, NULL,
2125 NULL, 0, tx);
2126 mutex_exit(&hdl->sa_lock);
2127 return (error);
2128}
2129
2130void
2131sa_object_info(sa_handle_t *hdl, dmu_object_info_t *doi)
2132{
0eb8ba6a 2133 dmu_object_info_from_db(hdl->sa_bonus, doi);
428870ff
BB		 2134}
2135
2136void
2137sa_object_size(sa_handle_t *hdl, uint32_t *blksize, u_longlong_t *nblocks)
2138{
0eb8ba6a 2139 dmu_object_size_from_db(hdl->sa_bonus,
428870ff
BB		 2140 blksize, nblocks);
2141}
2142
428870ff
BB		 2143void
2144sa_set_userp(sa_handle_t *hdl, void *ptr)
2145{
2146 hdl->sa_userp = ptr;
2147}
2148
2149dmu_buf_t *
2150sa_get_db(sa_handle_t *hdl)
2151{
0eb8ba6a 2152 return (hdl->sa_bonus);
428870ff
BB		 2153}
2154
2155void *
2156sa_get_userdata(sa_handle_t *hdl)
2157{
2158 return (hdl->sa_userp);
2159}
2160
2161void
2162sa_register_update_callback_locked(objset_t *os, sa_update_cb_t *func)
2163{
2164 ASSERT(MUTEX_HELD(&os->os_sa->sa_lock));
2165 os->os_sa->sa_update_cb = func;
2166}
2167
2168void
2169sa_register_update_callback(objset_t *os, sa_update_cb_t *func)
2170{
2171
2172 mutex_enter(&os->os_sa->sa_lock);
2173 sa_register_update_callback_locked(os, func);
2174 mutex_exit(&os->os_sa->sa_lock);
2175}
2176
2177uint64_t
2178sa_handle_object(sa_handle_t *hdl)
2179{
2180 return (hdl->sa_bonus->db_object);
2181}
2182
2183boolean_t
2184sa_enabled(objset_t *os)
2185{
2186 return (os->os_sa == NULL);
2187}
2188
2189int
2190sa_set_sa_object(objset_t *os, uint64_t sa_object)
2191{
2192 sa_os_t *sa = os->os_sa;
2193
2194 if (sa->sa_master_obj)
2195 return (1);
2196
2197 sa->sa_master_obj = sa_object;
2198
2199 return (0);
2200}
2201
2202int
2203sa_hdrsize(void *arg)
2204{
2205 sa_hdr_phys_t *hdr = arg;
2206
2207 return (SA_HDR_SIZE(hdr));
2208}
2209
2210void
2211sa_handle_lock(sa_handle_t *hdl)
2212{
2213 ASSERT(hdl);
2214 mutex_enter(&hdl->sa_lock);
2215}
2216
2217void
2218sa_handle_unlock(sa_handle_t *hdl)
2219{
2220 ASSERT(hdl);
2221 mutex_exit(&hdl->sa_lock);
2222}
e45aa452
BB		 2223
2224#ifdef _KERNEL
2225EXPORT_SYMBOL(sa_handle_get);
2226EXPORT_SYMBOL(sa_handle_get_from_db);
2227EXPORT_SYMBOL(sa_handle_destroy);
2228EXPORT_SYMBOL(sa_buf_hold);
2229EXPORT_SYMBOL(sa_buf_rele);
0ece356d 2230EXPORT_SYMBOL(sa_spill_rele);
e45aa452
BB		 2231EXPORT_SYMBOL(sa_lookup);
2232EXPORT_SYMBOL(sa_update);
2233EXPORT_SYMBOL(sa_remove);
2234EXPORT_SYMBOL(sa_bulk_lookup);
2235EXPORT_SYMBOL(sa_bulk_lookup_locked);
2236EXPORT_SYMBOL(sa_bulk_update);
2237EXPORT_SYMBOL(sa_size);
e45aa452
BB		 2238EXPORT_SYMBOL(sa_object_info);
2239EXPORT_SYMBOL(sa_object_size);
e45aa452
BB		 2240EXPORT_SYMBOL(sa_get_userdata);
2241EXPORT_SYMBOL(sa_set_userp);
2242EXPORT_SYMBOL(sa_get_db);
2243EXPORT_SYMBOL(sa_handle_object);
2244EXPORT_SYMBOL(sa_register_update_callback);
2245EXPORT_SYMBOL(sa_setup);
2246EXPORT_SYMBOL(sa_replace_all_by_template);
2247EXPORT_SYMBOL(sa_replace_all_by_template_locked);
2248EXPORT_SYMBOL(sa_enabled);
2249EXPORT_SYMBOL(sa_cache_init);
2250EXPORT_SYMBOL(sa_cache_fini);
2251EXPORT_SYMBOL(sa_set_sa_object);
2252EXPORT_SYMBOL(sa_hdrsize);
2253EXPORT_SYMBOL(sa_handle_lock);
2254EXPORT_SYMBOL(sa_handle_unlock);
2255EXPORT_SYMBOL(sa_lookup_uio);
9c5167d1 2256EXPORT_SYMBOL(sa_add_projid);
e45aa452 2257#endif /* _KERNEL */
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