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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 | /* | |
22 | * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. | |
23 | */ | |
24 | ||
25 | #include <sys/zfs_context.h> | |
26 | #include <sys/types.h> | |
27 | #include <sys/param.h> | |
28 | #include <sys/systm.h> | |
29 | #include <sys/sysmacros.h> | |
30 | #include <sys/dmu.h> | |
31 | #include <sys/dmu_impl.h> | |
32 | #include <sys/dmu_objset.h> | |
33 | #include <sys/dbuf.h> | |
34 | #include <sys/dnode.h> | |
35 | #include <sys/zap.h> | |
36 | #include <sys/sa.h> | |
37 | #include <sys/sunddi.h> | |
38 | #include <sys/sa_impl.h> | |
39 | #include <sys/dnode.h> | |
40 | #include <sys/errno.h> | |
41 | #include <sys/zfs_context.h> | |
42 | ||
43 | /* | |
44 | * ZFS System attributes: | |
45 | * | |
46 | * A generic mechanism to allow for arbitrary attributes | |
47 | * to be stored in a dnode. The data will be stored in the bonus buffer of | |
48 | * the dnode and if necessary a special "spill" block will be used to handle | |
49 | * overflow situations. The spill block will be sized to fit the data | |
50 | * from 512 - 128K. When a spill block is used the BP (blkptr_t) for the | |
51 | * spill block is stored at the end of the current bonus buffer. Any | |
52 | * attributes that would be in the way of the blkptr_t will be relocated | |
53 | * into the spill block. | |
54 | * | |
55 | * Attribute registration: | |
56 | * | |
57 | * Stored persistently on a per dataset basis | |
58 | * a mapping between attribute "string" names and their actual attribute | |
59 | * numeric values, length, and byteswap function. The names are only used | |
60 | * during registration. All attributes are known by their unique attribute | |
61 | * id value. If an attribute can have a variable size then the value | |
62 | * 0 will be used to indicate this. | |
63 | * | |
64 | * Attribute Layout: | |
65 | * | |
66 | * Attribute layouts are a way to compactly store multiple attributes, but | |
67 | * without taking the overhead associated with managing each attribute | |
68 | * individually. Since you will typically have the same set of attributes | |
69 | * stored in the same order a single table will be used to represent that | |
70 | * layout. The ZPL for example will usually have only about 10 different | |
71 | * layouts (regular files, device files, symlinks, | |
72 | * regular files + scanstamp, files/dir with extended attributes, and then | |
73 | * you have the possibility of all of those minus ACL, because it would | |
74 | * be kicked out into the spill block) | |
75 | * | |
76 | * Layouts are simply an array of the attributes and their | |
77 | * ordering i.e. [0, 1, 4, 5, 2] | |
78 | * | |
79 | * Each distinct layout is given a unique layout number and that is whats | |
80 | * stored in the header at the beginning of the SA data buffer. | |
81 | * | |
82 | * A layout only covers a single dbuf (bonus or spill). If a set of | |
83 | * attributes is split up between the bonus buffer and a spill buffer then | |
84 | * two different layouts will be used. This allows us to byteswap the | |
85 | * spill without looking at the bonus buffer and keeps the on disk format of | |
86 | * the bonus and spill buffer the same. | |
87 | * | |
88 | * Adding a single attribute will cause the entire set of attributes to | |
89 | * be rewritten and could result in a new layout number being constructed | |
90 | * as part of the rewrite if no such layout exists for the new set of | |
91 | * attribues. The new attribute will be appended to the end of the already | |
92 | * existing attributes. | |
93 | * | |
94 | * Both the attribute registration and attribute layout information are | |
95 | * stored in normal ZAP attributes. Their should be a small number of | |
96 | * known layouts and the set of attributes is assumed to typically be quite | |
97 | * small. | |
98 | * | |
99 | * The registered attributes and layout "table" information is maintained | |
100 | * in core and a special "sa_os_t" is attached to the objset_t. | |
101 | * | |
102 | * A special interface is provided to allow for quickly applying | |
103 | * a large set of attributes at once. sa_replace_all_by_template() is | |
104 | * used to set an array of attributes. This is used by the ZPL when | |
105 | * creating a brand new file. The template that is passed into the function | |
106 | * specifies the attribute, size for variable length attributes, location of | |
107 | * data and special "data locator" function if the data isn't in a contiguous | |
108 | * location. | |
109 | * | |
110 | * Byteswap implications: | |
111 | * Since the SA attributes are not entirely self describing we can't do | |
112 | * the normal byteswap processing. The special ZAP layout attribute and | |
113 | * attribute registration attributes define the byteswap function and the | |
114 | * size of the attributes, unless it is variable sized. | |
115 | * The normal ZFS byteswapping infrastructure assumes you don't need | |
116 | * to read any objects in order to do the necessary byteswapping. Whereas | |
117 | * SA attributes can only be properly byteswapped if the dataset is opened | |
118 | * and the layout/attribute ZAP attributes are available. Because of this | |
119 | * the SA attributes will be byteswapped when they are first accessed by | |
120 | * the SA code that will read the SA data. | |
121 | */ | |
122 | ||
123 | typedef void (sa_iterfunc_t)(void *hdr, void *addr, sa_attr_type_t, | |
124 | uint16_t length, int length_idx, boolean_t, void *userp); | |
125 | ||
126 | static int sa_build_index(sa_handle_t *hdl, sa_buf_type_t buftype); | |
127 | static void sa_idx_tab_hold(objset_t *os, sa_idx_tab_t *idx_tab); | |
128 | static void *sa_find_idx_tab(objset_t *os, dmu_object_type_t bonustype, | |
129 | void *data); | |
130 | static void sa_idx_tab_rele(objset_t *os, void *arg); | |
131 | static void sa_copy_data(sa_data_locator_t *func, void *start, void *target, | |
132 | int buflen); | |
133 | static int sa_modify_attrs(sa_handle_t *hdl, sa_attr_type_t newattr, | |
134 | sa_data_op_t action, sa_data_locator_t *locator, void *datastart, | |
135 | uint16_t buflen, dmu_tx_t *tx); | |
136 | ||
137 | arc_byteswap_func_t *sa_bswap_table[] = { | |
138 | byteswap_uint64_array, | |
139 | byteswap_uint32_array, | |
140 | byteswap_uint16_array, | |
141 | byteswap_uint8_array, | |
142 | zfs_acl_byteswap, | |
143 | }; | |
144 | ||
145 | #define SA_COPY_DATA(f, s, t, l) \ | |
146 | { \ | |
147 | if (f == NULL) { \ | |
148 | if (l == 8) { \ | |
149 | *(uint64_t *)t = *(uint64_t *)s; \ | |
150 | } else if (l == 16) { \ | |
151 | *(uint64_t *)t = *(uint64_t *)s; \ | |
152 | *(uint64_t *)((uintptr_t)t + 8) = \ | |
153 | *(uint64_t *)((uintptr_t)s + 8); \ | |
154 | } else { \ | |
155 | bcopy(s, t, l); \ | |
156 | } \ | |
157 | } else \ | |
158 | sa_copy_data(f, s, t, l); \ | |
159 | } | |
160 | ||
161 | /* | |
162 | * This table is fixed and cannot be changed. Its purpose is to | |
163 | * allow the SA code to work with both old/new ZPL file systems. | |
164 | * It contains the list of legacy attributes. These attributes aren't | |
165 | * stored in the "attribute" registry zap objects, since older ZPL file systems | |
166 | * won't have the registry. Only objsets of type ZFS_TYPE_FILESYSTEM will | |
167 | * use this static table. | |
168 | */ | |
169 | sa_attr_reg_t sa_legacy_attrs[] = { | |
170 | {"ZPL_ATIME", sizeof (uint64_t) * 2, SA_UINT64_ARRAY, 0}, | |
171 | {"ZPL_MTIME", sizeof (uint64_t) * 2, SA_UINT64_ARRAY, 1}, | |
172 | {"ZPL_CTIME", sizeof (uint64_t) * 2, SA_UINT64_ARRAY, 2}, | |
173 | {"ZPL_CRTIME", sizeof (uint64_t) * 2, SA_UINT64_ARRAY, 3}, | |
174 | {"ZPL_GEN", sizeof (uint64_t), SA_UINT64_ARRAY, 4}, | |
175 | {"ZPL_MODE", sizeof (uint64_t), SA_UINT64_ARRAY, 5}, | |
176 | {"ZPL_SIZE", sizeof (uint64_t), SA_UINT64_ARRAY, 6}, | |
177 | {"ZPL_PARENT", sizeof (uint64_t), SA_UINT64_ARRAY, 7}, | |
178 | {"ZPL_LINKS", sizeof (uint64_t), SA_UINT64_ARRAY, 8}, | |
179 | {"ZPL_XATTR", sizeof (uint64_t), SA_UINT64_ARRAY, 9}, | |
180 | {"ZPL_RDEV", sizeof (uint64_t), SA_UINT64_ARRAY, 10}, | |
181 | {"ZPL_FLAGS", sizeof (uint64_t), SA_UINT64_ARRAY, 11}, | |
182 | {"ZPL_UID", sizeof (uint64_t), SA_UINT64_ARRAY, 12}, | |
183 | {"ZPL_GID", sizeof (uint64_t), SA_UINT64_ARRAY, 13}, | |
184 | {"ZPL_PAD", sizeof (uint64_t) * 4, SA_UINT64_ARRAY, 14}, | |
185 | {"ZPL_ZNODE_ACL", 88, SA_UINT8_ARRAY, 15}, | |
186 | }; | |
187 | ||
188 | /* | |
189 | * ZPL legacy layout | |
190 | * This is only used for objects of type DMU_OT_ZNODE | |
191 | */ | |
192 | sa_attr_type_t sa_legacy_zpl_layout[] = { | |
193 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 | |
194 | }; | |
195 | ||
196 | /* | |
197 | * Special dummy layout used for buffers with no attributes. | |
198 | */ | |
199 | ||
200 | sa_attr_type_t sa_dummy_zpl_layout[] = { 0 }; | |
201 | ||
202 | static int sa_legacy_attr_count = 16; | |
203 | static kmem_cache_t *sa_cache = NULL; | |
82a37189 | 204 | static kmem_cache_t *spill_cache = NULL; |
428870ff BB |
205 | |
206 | /*ARGSUSED*/ | |
207 | static int | |
208 | sa_cache_constructor(void *buf, void *unused, int kmflag) | |
209 | { | |
210 | sa_handle_t *hdl = buf; | |
211 | ||
212 | hdl->sa_bonus_tab = NULL; | |
213 | hdl->sa_spill_tab = NULL; | |
214 | hdl->sa_os = NULL; | |
215 | hdl->sa_userp = NULL; | |
216 | hdl->sa_bonus = NULL; | |
217 | hdl->sa_spill = NULL; | |
218 | mutex_init(&hdl->sa_lock, NULL, MUTEX_DEFAULT, NULL); | |
219 | return (0); | |
220 | } | |
221 | ||
222 | /*ARGSUSED*/ | |
223 | static void | |
224 | sa_cache_destructor(void *buf, void *unused) | |
225 | { | |
226 | sa_handle_t *hdl = buf; | |
227 | mutex_destroy(&hdl->sa_lock); | |
228 | } | |
229 | ||
230 | void | |
231 | sa_cache_init(void) | |
232 | { | |
233 | sa_cache = kmem_cache_create("sa_cache", | |
234 | sizeof (sa_handle_t), 0, sa_cache_constructor, | |
235 | sa_cache_destructor, NULL, NULL, NULL, 0); | |
82a37189 BB |
236 | spill_cache = kmem_cache_create("spill_cache", |
237 | SPA_MAXBLOCKSIZE, 0, NULL, NULL, NULL, NULL, NULL, 0); | |
428870ff BB |
238 | } |
239 | ||
240 | void | |
241 | sa_cache_fini(void) | |
242 | { | |
243 | if (sa_cache) | |
244 | kmem_cache_destroy(sa_cache); | |
82a37189 BB |
245 | |
246 | if (spill_cache) | |
247 | kmem_cache_destroy(spill_cache); | |
248 | } | |
249 | ||
250 | void * | |
251 | sa_spill_alloc(int flags) | |
252 | { | |
253 | return kmem_cache_alloc(spill_cache, flags); | |
254 | } | |
255 | ||
256 | void | |
257 | sa_spill_free(void *obj) | |
258 | { | |
259 | kmem_cache_free(spill_cache, obj); | |
428870ff BB |
260 | } |
261 | ||
262 | static int | |
263 | layout_num_compare(const void *arg1, const void *arg2) | |
264 | { | |
265 | const sa_lot_t *node1 = arg1; | |
266 | const sa_lot_t *node2 = arg2; | |
267 | ||
268 | if (node1->lot_num > node2->lot_num) | |
269 | return (1); | |
270 | else if (node1->lot_num < node2->lot_num) | |
271 | return (-1); | |
272 | return (0); | |
273 | } | |
274 | ||
275 | static int | |
276 | layout_hash_compare(const void *arg1, const void *arg2) | |
277 | { | |
278 | const sa_lot_t *node1 = arg1; | |
279 | const sa_lot_t *node2 = arg2; | |
280 | ||
281 | if (node1->lot_hash > node2->lot_hash) | |
282 | return (1); | |
283 | if (node1->lot_hash < node2->lot_hash) | |
284 | return (-1); | |
285 | if (node1->lot_instance > node2->lot_instance) | |
286 | return (1); | |
287 | if (node1->lot_instance < node2->lot_instance) | |
288 | return (-1); | |
289 | return (0); | |
290 | } | |
291 | ||
292 | boolean_t | |
293 | sa_layout_equal(sa_lot_t *tbf, sa_attr_type_t *attrs, int count) | |
294 | { | |
295 | int i; | |
296 | ||
297 | if (count != tbf->lot_attr_count) | |
298 | return (1); | |
299 | ||
300 | for (i = 0; i != count; i++) { | |
301 | if (attrs[i] != tbf->lot_attrs[i]) | |
302 | return (1); | |
303 | } | |
304 | return (0); | |
305 | } | |
306 | ||
307 | #define SA_ATTR_HASH(attr) (zfs_crc64_table[(-1ULL ^ attr) & 0xFF]) | |
308 | ||
309 | static uint64_t | |
310 | sa_layout_info_hash(sa_attr_type_t *attrs, int attr_count) | |
311 | { | |
312 | int i; | |
313 | uint64_t crc = -1ULL; | |
314 | ||
315 | for (i = 0; i != attr_count; i++) | |
316 | crc ^= SA_ATTR_HASH(attrs[i]); | |
317 | ||
318 | return (crc); | |
319 | } | |
320 | ||
572e2857 BB |
321 | static int |
322 | sa_get_spill(sa_handle_t *hdl) | |
428870ff BB |
323 | { |
324 | int rc; | |
325 | if (hdl->sa_spill == NULL) { | |
326 | if ((rc = dmu_spill_hold_existing(hdl->sa_bonus, NULL, | |
327 | &hdl->sa_spill)) == 0) | |
328 | VERIFY(0 == sa_build_index(hdl, SA_SPILL)); | |
329 | } else { | |
330 | rc = 0; | |
331 | } | |
332 | ||
572e2857 | 333 | return (rc); |
428870ff BB |
334 | } |
335 | ||
336 | /* | |
337 | * Main attribute lookup/update function | |
338 | * returns 0 for success or non zero for failures | |
339 | * | |
340 | * Operates on bulk array, first failure will abort further processing | |
341 | */ | |
342 | int | |
343 | sa_attr_op(sa_handle_t *hdl, sa_bulk_attr_t *bulk, int count, | |
344 | sa_data_op_t data_op, dmu_tx_t *tx) | |
345 | { | |
346 | sa_os_t *sa = hdl->sa_os->os_sa; | |
347 | int i; | |
348 | int error = 0; | |
349 | sa_buf_type_t buftypes; | |
350 | ||
351 | buftypes = 0; | |
352 | ||
353 | ASSERT(count > 0); | |
354 | for (i = 0; i != count; i++) { | |
355 | ASSERT(bulk[i].sa_attr <= hdl->sa_os->os_sa->sa_num_attrs); | |
356 | ||
357 | bulk[i].sa_addr = NULL; | |
358 | /* First check the bonus buffer */ | |
359 | ||
360 | if (hdl->sa_bonus_tab && TOC_ATTR_PRESENT( | |
361 | hdl->sa_bonus_tab->sa_idx_tab[bulk[i].sa_attr])) { | |
362 | SA_ATTR_INFO(sa, hdl->sa_bonus_tab, | |
363 | SA_GET_HDR(hdl, SA_BONUS), | |
364 | bulk[i].sa_attr, bulk[i], SA_BONUS, hdl); | |
365 | if (tx && !(buftypes & SA_BONUS)) { | |
366 | dmu_buf_will_dirty(hdl->sa_bonus, tx); | |
367 | buftypes |= SA_BONUS; | |
368 | } | |
369 | } | |
572e2857 BB |
370 | if (bulk[i].sa_addr == NULL && |
371 | ((error = sa_get_spill(hdl)) == 0)) { | |
428870ff BB |
372 | if (TOC_ATTR_PRESENT( |
373 | hdl->sa_spill_tab->sa_idx_tab[bulk[i].sa_attr])) { | |
374 | SA_ATTR_INFO(sa, hdl->sa_spill_tab, | |
375 | SA_GET_HDR(hdl, SA_SPILL), | |
376 | bulk[i].sa_attr, bulk[i], SA_SPILL, hdl); | |
377 | if (tx && !(buftypes & SA_SPILL) && | |
378 | bulk[i].sa_size == bulk[i].sa_length) { | |
379 | dmu_buf_will_dirty(hdl->sa_spill, tx); | |
380 | buftypes |= SA_SPILL; | |
381 | } | |
382 | } | |
383 | } | |
572e2857 BB |
384 | if (error && error != ENOENT) { |
385 | return ((error == ECKSUM) ? EIO : error); | |
386 | } | |
387 | ||
428870ff BB |
388 | switch (data_op) { |
389 | case SA_LOOKUP: | |
390 | if (bulk[i].sa_addr == NULL) | |
391 | return (ENOENT); | |
392 | if (bulk[i].sa_data) { | |
393 | SA_COPY_DATA(bulk[i].sa_data_func, | |
394 | bulk[i].sa_addr, bulk[i].sa_data, | |
395 | bulk[i].sa_size); | |
396 | } | |
397 | continue; | |
398 | ||
399 | case SA_UPDATE: | |
400 | /* existing rewrite of attr */ | |
401 | if (bulk[i].sa_addr && | |
402 | bulk[i].sa_size == bulk[i].sa_length) { | |
403 | SA_COPY_DATA(bulk[i].sa_data_func, | |
404 | bulk[i].sa_data, bulk[i].sa_addr, | |
405 | bulk[i].sa_length); | |
406 | continue; | |
407 | } else if (bulk[i].sa_addr) { /* attr size change */ | |
408 | error = sa_modify_attrs(hdl, bulk[i].sa_attr, | |
409 | SA_REPLACE, bulk[i].sa_data_func, | |
410 | bulk[i].sa_data, bulk[i].sa_length, tx); | |
411 | } else { /* adding new attribute */ | |
412 | error = sa_modify_attrs(hdl, bulk[i].sa_attr, | |
413 | SA_ADD, bulk[i].sa_data_func, | |
414 | bulk[i].sa_data, bulk[i].sa_length, tx); | |
415 | } | |
416 | if (error) | |
417 | return (error); | |
418 | break; | |
e75c13c3 BB |
419 | default: |
420 | break; | |
428870ff BB |
421 | } |
422 | } | |
423 | return (error); | |
424 | } | |
425 | ||
426 | static sa_lot_t * | |
427 | sa_add_layout_entry(objset_t *os, sa_attr_type_t *attrs, int attr_count, | |
428 | uint64_t lot_num, uint64_t hash, boolean_t zapadd, dmu_tx_t *tx) | |
429 | { | |
430 | sa_os_t *sa = os->os_sa; | |
431 | sa_lot_t *tb, *findtb; | |
432 | int i; | |
433 | avl_index_t loc; | |
434 | ||
435 | ASSERT(MUTEX_HELD(&sa->sa_lock)); | |
b8d06fca | 436 | tb = kmem_zalloc(sizeof (sa_lot_t), KM_PUSHPAGE); |
428870ff BB |
437 | tb->lot_attr_count = attr_count; |
438 | tb->lot_attrs = kmem_alloc(sizeof (sa_attr_type_t) * attr_count, | |
b8d06fca | 439 | KM_PUSHPAGE); |
428870ff BB |
440 | bcopy(attrs, tb->lot_attrs, sizeof (sa_attr_type_t) * attr_count); |
441 | tb->lot_num = lot_num; | |
442 | tb->lot_hash = hash; | |
443 | tb->lot_instance = 0; | |
444 | ||
445 | if (zapadd) { | |
446 | char attr_name[8]; | |
447 | ||
448 | if (sa->sa_layout_attr_obj == 0) { | |
428870ff BB |
449 | sa->sa_layout_attr_obj = zap_create(os, |
450 | DMU_OT_SA_ATTR_LAYOUTS, DMU_OT_NONE, 0, tx); | |
572e2857 BB |
451 | VERIFY(zap_add(os, sa->sa_master_obj, SA_LAYOUTS, 8, 1, |
452 | &sa->sa_layout_attr_obj, tx) == 0); | |
428870ff BB |
453 | } |
454 | ||
455 | (void) snprintf(attr_name, sizeof (attr_name), | |
456 | "%d", (int)lot_num); | |
457 | VERIFY(0 == zap_update(os, os->os_sa->sa_layout_attr_obj, | |
458 | attr_name, 2, attr_count, attrs, tx)); | |
459 | } | |
460 | ||
461 | list_create(&tb->lot_idx_tab, sizeof (sa_idx_tab_t), | |
462 | offsetof(sa_idx_tab_t, sa_next)); | |
463 | ||
464 | for (i = 0; i != attr_count; i++) { | |
465 | if (sa->sa_attr_table[tb->lot_attrs[i]].sa_length == 0) | |
466 | tb->lot_var_sizes++; | |
467 | } | |
468 | ||
469 | avl_add(&sa->sa_layout_num_tree, tb); | |
470 | ||
471 | /* verify we don't have a hash collision */ | |
472 | if ((findtb = avl_find(&sa->sa_layout_hash_tree, tb, &loc)) != NULL) { | |
473 | for (; findtb && findtb->lot_hash == hash; | |
474 | findtb = AVL_NEXT(&sa->sa_layout_hash_tree, findtb)) { | |
475 | if (findtb->lot_instance != tb->lot_instance) | |
476 | break; | |
477 | tb->lot_instance++; | |
478 | } | |
479 | } | |
480 | avl_add(&sa->sa_layout_hash_tree, tb); | |
481 | return (tb); | |
482 | } | |
483 | ||
484 | static void | |
485 | sa_find_layout(objset_t *os, uint64_t hash, sa_attr_type_t *attrs, | |
486 | int count, dmu_tx_t *tx, sa_lot_t **lot) | |
487 | { | |
488 | sa_lot_t *tb, tbsearch; | |
489 | avl_index_t loc; | |
490 | sa_os_t *sa = os->os_sa; | |
491 | boolean_t found = B_FALSE; | |
492 | ||
493 | mutex_enter(&sa->sa_lock); | |
494 | tbsearch.lot_hash = hash; | |
495 | tbsearch.lot_instance = 0; | |
496 | tb = avl_find(&sa->sa_layout_hash_tree, &tbsearch, &loc); | |
497 | if (tb) { | |
498 | for (; tb && tb->lot_hash == hash; | |
499 | tb = AVL_NEXT(&sa->sa_layout_hash_tree, tb)) { | |
500 | if (sa_layout_equal(tb, attrs, count) == 0) { | |
501 | found = B_TRUE; | |
502 | break; | |
503 | } | |
504 | } | |
505 | } | |
506 | if (!found) { | |
507 | tb = sa_add_layout_entry(os, attrs, count, | |
508 | avl_numnodes(&sa->sa_layout_num_tree), hash, B_TRUE, tx); | |
509 | } | |
510 | mutex_exit(&sa->sa_lock); | |
511 | *lot = tb; | |
512 | } | |
513 | ||
514 | static int | |
515 | sa_resize_spill(sa_handle_t *hdl, uint32_t size, dmu_tx_t *tx) | |
516 | { | |
517 | int error; | |
518 | uint32_t blocksize; | |
519 | ||
520 | if (size == 0) { | |
521 | blocksize = SPA_MINBLOCKSIZE; | |
522 | } else if (size > SPA_MAXBLOCKSIZE) { | |
523 | ASSERT(0); | |
524 | return (EFBIG); | |
525 | } else { | |
526 | blocksize = P2ROUNDUP_TYPED(size, SPA_MINBLOCKSIZE, uint32_t); | |
527 | } | |
528 | ||
529 | error = dbuf_spill_set_blksz(hdl->sa_spill, blocksize, tx); | |
530 | ASSERT(error == 0); | |
531 | return (error); | |
532 | } | |
533 | ||
534 | static void | |
535 | sa_copy_data(sa_data_locator_t *func, void *datastart, void *target, int buflen) | |
536 | { | |
537 | if (func == NULL) { | |
538 | bcopy(datastart, target, buflen); | |
539 | } else { | |
540 | boolean_t start; | |
541 | int bytes; | |
542 | void *dataptr; | |
543 | void *saptr = target; | |
544 | uint32_t length; | |
545 | ||
546 | start = B_TRUE; | |
547 | bytes = 0; | |
548 | while (bytes < buflen) { | |
549 | func(&dataptr, &length, buflen, start, datastart); | |
550 | bcopy(dataptr, saptr, length); | |
551 | saptr = (void *)((caddr_t)saptr + length); | |
552 | bytes += length; | |
553 | start = B_FALSE; | |
554 | } | |
555 | } | |
556 | } | |
557 | ||
558 | /* | |
559 | * Determine several different sizes | |
560 | * first the sa header size | |
561 | * the number of bytes to be stored | |
562 | * if spill would occur the index in the attribute array is returned | |
563 | * | |
564 | * the boolean will_spill will be set when spilling is necessary. It | |
565 | * is only set when the buftype is SA_BONUS | |
566 | */ | |
567 | static int | |
568 | sa_find_sizes(sa_os_t *sa, sa_bulk_attr_t *attr_desc, int attr_count, | |
569 | dmu_buf_t *db, sa_buf_type_t buftype, int *index, int *total, | |
570 | boolean_t *will_spill) | |
571 | { | |
572 | int var_size = 0; | |
573 | int i; | |
574 | int full_space; | |
575 | int hdrsize; | |
576 | boolean_t done = B_FALSE; | |
577 | ||
578 | if (buftype == SA_BONUS && sa->sa_force_spill) { | |
579 | *total = 0; | |
580 | *index = 0; | |
581 | *will_spill = B_TRUE; | |
582 | return (0); | |
583 | } | |
584 | ||
585 | *index = -1; | |
586 | *total = 0; | |
587 | ||
588 | if (buftype == SA_BONUS) | |
589 | *will_spill = B_FALSE; | |
590 | ||
591 | hdrsize = (SA_BONUSTYPE_FROM_DB(db) == DMU_OT_ZNODE) ? 0 : | |
592 | sizeof (sa_hdr_phys_t); | |
593 | ||
594 | full_space = (buftype == SA_BONUS) ? DN_MAX_BONUSLEN : db->db_size; | |
595 | ||
596 | for (i = 0; i != attr_count; i++) { | |
597 | boolean_t is_var_sz; | |
598 | ||
599 | *total += attr_desc[i].sa_length; | |
600 | if (done) | |
601 | goto next; | |
602 | ||
603 | is_var_sz = (SA_REGISTERED_LEN(sa, attr_desc[i].sa_attr) == 0); | |
604 | if (is_var_sz) { | |
605 | var_size++; | |
606 | } | |
607 | ||
608 | if (is_var_sz && var_size > 1) { | |
609 | if (P2ROUNDUP(hdrsize + sizeof (uint16_t), 8) + | |
610 | *total < full_space) { | |
611 | hdrsize += sizeof (uint16_t); | |
612 | } else { | |
613 | done = B_TRUE; | |
614 | *index = i; | |
615 | if (buftype == SA_BONUS) | |
616 | *will_spill = B_TRUE; | |
617 | continue; | |
618 | } | |
619 | } | |
620 | ||
621 | /* | |
622 | * find index of where spill *could* occur. | |
623 | * Then continue to count of remainder attribute | |
624 | * space. The sum is used later for sizing bonus | |
625 | * and spill buffer. | |
626 | */ | |
627 | if (buftype == SA_BONUS && *index == -1 && | |
c4751676 | 628 | (*total + P2ROUNDUP(hdrsize, 8)) > |
428870ff BB |
629 | (full_space - sizeof (blkptr_t))) { |
630 | *index = i; | |
631 | done = B_TRUE; | |
632 | } | |
633 | ||
634 | next: | |
c4751676 | 635 | if ((*total + P2ROUNDUP(hdrsize, 8)) > full_space && |
428870ff BB |
636 | buftype == SA_BONUS) |
637 | *will_spill = B_TRUE; | |
638 | } | |
639 | ||
640 | hdrsize = P2ROUNDUP(hdrsize, 8); | |
641 | return (hdrsize); | |
642 | } | |
643 | ||
644 | #define BUF_SPACE_NEEDED(total, header) (total + header) | |
645 | ||
646 | /* | |
647 | * Find layout that corresponds to ordering of attributes | |
648 | * If not found a new layout number is created and added to | |
649 | * persistent layout tables. | |
650 | */ | |
651 | static int | |
652 | sa_build_layouts(sa_handle_t *hdl, sa_bulk_attr_t *attr_desc, int attr_count, | |
653 | dmu_tx_t *tx) | |
654 | { | |
655 | sa_os_t *sa = hdl->sa_os->os_sa; | |
656 | uint64_t hash; | |
657 | sa_buf_type_t buftype; | |
658 | sa_hdr_phys_t *sahdr; | |
659 | void *data_start; | |
660 | int buf_space; | |
661 | sa_attr_type_t *attrs, *attrs_start; | |
662 | int i, lot_count; | |
d4ed6673 | 663 | int hdrsize, spillhdrsize = 0; |
428870ff BB |
664 | int used; |
665 | dmu_object_type_t bonustype; | |
666 | sa_lot_t *lot; | |
667 | int len_idx; | |
668 | int spill_used; | |
669 | boolean_t spilling; | |
670 | ||
671 | dmu_buf_will_dirty(hdl->sa_bonus, tx); | |
672 | bonustype = SA_BONUSTYPE_FROM_DB(hdl->sa_bonus); | |
673 | ||
674 | /* first determine bonus header size and sum of all attributes */ | |
675 | hdrsize = sa_find_sizes(sa, attr_desc, attr_count, hdl->sa_bonus, | |
676 | SA_BONUS, &i, &used, &spilling); | |
677 | ||
678 | if (used > SPA_MAXBLOCKSIZE) | |
679 | return (EFBIG); | |
680 | ||
681 | VERIFY(0 == dmu_set_bonus(hdl->sa_bonus, spilling ? | |
682 | MIN(DN_MAX_BONUSLEN - sizeof (blkptr_t), used + hdrsize) : | |
683 | used + hdrsize, tx)); | |
684 | ||
685 | ASSERT((bonustype == DMU_OT_ZNODE && spilling == 0) || | |
686 | bonustype == DMU_OT_SA); | |
687 | ||
688 | /* setup and size spill buffer when needed */ | |
689 | if (spilling) { | |
690 | boolean_t dummy; | |
691 | ||
692 | if (hdl->sa_spill == NULL) { | |
572e2857 BB |
693 | VERIFY(dmu_spill_hold_by_bonus(hdl->sa_bonus, NULL, |
694 | &hdl->sa_spill) == 0); | |
428870ff BB |
695 | } |
696 | dmu_buf_will_dirty(hdl->sa_spill, tx); | |
697 | ||
698 | spillhdrsize = sa_find_sizes(sa, &attr_desc[i], | |
699 | attr_count - i, hdl->sa_spill, SA_SPILL, &i, | |
700 | &spill_used, &dummy); | |
701 | ||
702 | if (spill_used > SPA_MAXBLOCKSIZE) | |
703 | return (EFBIG); | |
704 | ||
705 | buf_space = hdl->sa_spill->db_size - spillhdrsize; | |
706 | if (BUF_SPACE_NEEDED(spill_used, spillhdrsize) > | |
707 | hdl->sa_spill->db_size) | |
708 | VERIFY(0 == sa_resize_spill(hdl, | |
709 | BUF_SPACE_NEEDED(spill_used, spillhdrsize), tx)); | |
710 | } | |
711 | ||
712 | /* setup starting pointers to lay down data */ | |
713 | data_start = (void *)((uintptr_t)hdl->sa_bonus->db_data + hdrsize); | |
714 | sahdr = (sa_hdr_phys_t *)hdl->sa_bonus->db_data; | |
715 | buftype = SA_BONUS; | |
716 | ||
717 | if (spilling) | |
718 | buf_space = (sa->sa_force_spill) ? | |
719 | 0 : SA_BLKPTR_SPACE - hdrsize; | |
720 | else | |
721 | buf_space = hdl->sa_bonus->db_size - hdrsize; | |
722 | ||
723 | attrs_start = attrs = kmem_alloc(sizeof (sa_attr_type_t) * attr_count, | |
b8d06fca | 724 | KM_PUSHPAGE); |
428870ff BB |
725 | lot_count = 0; |
726 | ||
727 | for (i = 0, len_idx = 0, hash = -1ULL; i != attr_count; i++) { | |
728 | uint16_t length; | |
729 | ||
730 | attrs[i] = attr_desc[i].sa_attr; | |
731 | length = SA_REGISTERED_LEN(sa, attrs[i]); | |
732 | if (length == 0) | |
733 | length = attr_desc[i].sa_length; | |
734 | ||
735 | if (buf_space < length) { /* switch to spill buffer */ | |
572e2857 | 736 | VERIFY(bonustype == DMU_OT_SA); |
428870ff BB |
737 | if (buftype == SA_BONUS && !sa->sa_force_spill) { |
738 | sa_find_layout(hdl->sa_os, hash, attrs_start, | |
739 | lot_count, tx, &lot); | |
740 | SA_SET_HDR(sahdr, lot->lot_num, hdrsize); | |
741 | } | |
742 | ||
743 | buftype = SA_SPILL; | |
744 | hash = -1ULL; | |
745 | len_idx = 0; | |
746 | ||
747 | sahdr = (sa_hdr_phys_t *)hdl->sa_spill->db_data; | |
748 | sahdr->sa_magic = SA_MAGIC; | |
749 | data_start = (void *)((uintptr_t)sahdr + | |
750 | spillhdrsize); | |
751 | attrs_start = &attrs[i]; | |
752 | buf_space = hdl->sa_spill->db_size - spillhdrsize; | |
753 | lot_count = 0; | |
754 | } | |
755 | hash ^= SA_ATTR_HASH(attrs[i]); | |
756 | attr_desc[i].sa_addr = data_start; | |
757 | attr_desc[i].sa_size = length; | |
758 | SA_COPY_DATA(attr_desc[i].sa_data_func, attr_desc[i].sa_data, | |
759 | data_start, length); | |
760 | if (sa->sa_attr_table[attrs[i]].sa_length == 0) { | |
761 | sahdr->sa_lengths[len_idx++] = length; | |
762 | } | |
763 | data_start = (void *)P2ROUNDUP(((uintptr_t)data_start + | |
764 | length), 8); | |
765 | buf_space -= P2ROUNDUP(length, 8); | |
766 | lot_count++; | |
767 | } | |
768 | ||
769 | sa_find_layout(hdl->sa_os, hash, attrs_start, lot_count, tx, &lot); | |
572e2857 BB |
770 | |
771 | /* | |
772 | * Verify that old znodes always have layout number 0. | |
773 | * Must be DMU_OT_SA for arbitrary layouts | |
774 | */ | |
775 | VERIFY((bonustype == DMU_OT_ZNODE && lot->lot_num == 0) || | |
776 | (bonustype == DMU_OT_SA && lot->lot_num > 1)); | |
777 | ||
428870ff BB |
778 | if (bonustype == DMU_OT_SA) { |
779 | SA_SET_HDR(sahdr, lot->lot_num, | |
780 | buftype == SA_BONUS ? hdrsize : spillhdrsize); | |
781 | } | |
782 | ||
783 | kmem_free(attrs, sizeof (sa_attr_type_t) * attr_count); | |
784 | if (hdl->sa_bonus_tab) { | |
785 | sa_idx_tab_rele(hdl->sa_os, hdl->sa_bonus_tab); | |
786 | hdl->sa_bonus_tab = NULL; | |
787 | } | |
788 | if (!sa->sa_force_spill) | |
789 | VERIFY(0 == sa_build_index(hdl, SA_BONUS)); | |
790 | if (hdl->sa_spill) { | |
791 | sa_idx_tab_rele(hdl->sa_os, hdl->sa_spill_tab); | |
792 | if (!spilling) { | |
793 | /* | |
794 | * remove spill block that is no longer needed. | |
428870ff BB |
795 | */ |
796 | dmu_buf_rele(hdl->sa_spill, NULL); | |
797 | hdl->sa_spill = NULL; | |
798 | hdl->sa_spill_tab = NULL; | |
799 | VERIFY(0 == dmu_rm_spill(hdl->sa_os, | |
800 | sa_handle_object(hdl), tx)); | |
801 | } else { | |
802 | VERIFY(0 == sa_build_index(hdl, SA_SPILL)); | |
803 | } | |
804 | } | |
805 | ||
806 | return (0); | |
807 | } | |
808 | ||
809 | static void | |
572e2857 BB |
810 | sa_free_attr_table(sa_os_t *sa) |
811 | { | |
812 | int i; | |
813 | ||
814 | if (sa->sa_attr_table == NULL) | |
815 | return; | |
816 | ||
817 | for (i = 0; i != sa->sa_num_attrs; i++) { | |
818 | if (sa->sa_attr_table[i].sa_name) | |
819 | kmem_free(sa->sa_attr_table[i].sa_name, | |
820 | strlen(sa->sa_attr_table[i].sa_name) + 1); | |
821 | } | |
822 | ||
823 | kmem_free(sa->sa_attr_table, | |
824 | sizeof (sa_attr_table_t) * sa->sa_num_attrs); | |
825 | ||
826 | sa->sa_attr_table = NULL; | |
827 | } | |
828 | ||
829 | static int | |
428870ff BB |
830 | sa_attr_table_setup(objset_t *os, sa_attr_reg_t *reg_attrs, int count) |
831 | { | |
832 | sa_os_t *sa = os->os_sa; | |
833 | uint64_t sa_attr_count = 0; | |
d4ed6673 | 834 | uint64_t sa_reg_count = 0; |
428870ff BB |
835 | int error = 0; |
836 | uint64_t attr_value; | |
837 | sa_attr_table_t *tb; | |
838 | zap_cursor_t zc; | |
839 | zap_attribute_t za; | |
840 | int registered_count = 0; | |
841 | int i; | |
842 | dmu_objset_type_t ostype = dmu_objset_type(os); | |
843 | ||
844 | sa->sa_user_table = | |
b8d06fca | 845 | kmem_zalloc(count * sizeof (sa_attr_type_t), KM_PUSHPAGE); |
428870ff BB |
846 | sa->sa_user_table_sz = count * sizeof (sa_attr_type_t); |
847 | ||
572e2857 BB |
848 | if (sa->sa_reg_attr_obj != 0) { |
849 | error = zap_count(os, sa->sa_reg_attr_obj, | |
850 | &sa_attr_count); | |
851 | ||
852 | /* | |
853 | * Make sure we retrieved a count and that it isn't zero | |
854 | */ | |
855 | if (error || (error == 0 && sa_attr_count == 0)) { | |
856 | if (error == 0) | |
857 | error = EINVAL; | |
858 | goto bail; | |
859 | } | |
860 | sa_reg_count = sa_attr_count; | |
861 | } | |
428870ff BB |
862 | |
863 | if (ostype == DMU_OST_ZFS && sa_attr_count == 0) | |
864 | sa_attr_count += sa_legacy_attr_count; | |
865 | ||
866 | /* Allocate attribute numbers for attributes that aren't registered */ | |
867 | for (i = 0; i != count; i++) { | |
868 | boolean_t found = B_FALSE; | |
869 | int j; | |
870 | ||
871 | if (ostype == DMU_OST_ZFS) { | |
872 | for (j = 0; j != sa_legacy_attr_count; j++) { | |
873 | if (strcmp(reg_attrs[i].sa_name, | |
874 | sa_legacy_attrs[j].sa_name) == 0) { | |
875 | sa->sa_user_table[i] = | |
876 | sa_legacy_attrs[j].sa_attr; | |
877 | found = B_TRUE; | |
878 | } | |
879 | } | |
880 | } | |
881 | if (found) | |
882 | continue; | |
883 | ||
884 | if (sa->sa_reg_attr_obj) | |
885 | error = zap_lookup(os, sa->sa_reg_attr_obj, | |
886 | reg_attrs[i].sa_name, 8, 1, &attr_value); | |
887 | else | |
888 | error = ENOENT; | |
889 | switch (error) { | |
428870ff BB |
890 | case ENOENT: |
891 | sa->sa_user_table[i] = (sa_attr_type_t)sa_attr_count; | |
892 | sa_attr_count++; | |
893 | break; | |
894 | case 0: | |
895 | sa->sa_user_table[i] = ATTR_NUM(attr_value); | |
896 | break; | |
572e2857 BB |
897 | default: |
898 | goto bail; | |
428870ff BB |
899 | } |
900 | } | |
901 | ||
572e2857 BB |
902 | sa->sa_num_attrs = sa_attr_count; |
903 | tb = sa->sa_attr_table = | |
b8d06fca | 904 | kmem_zalloc(sizeof (sa_attr_table_t) * sa_attr_count, KM_PUSHPAGE); |
428870ff BB |
905 | |
906 | /* | |
907 | * Attribute table is constructed from requested attribute list, | |
908 | * previously foreign registered attributes, and also the legacy | |
909 | * ZPL set of attributes. | |
910 | */ | |
911 | ||
912 | if (sa->sa_reg_attr_obj) { | |
913 | for (zap_cursor_init(&zc, os, sa->sa_reg_attr_obj); | |
572e2857 | 914 | (error = zap_cursor_retrieve(&zc, &za)) == 0; |
428870ff BB |
915 | zap_cursor_advance(&zc)) { |
916 | uint64_t value; | |
917 | value = za.za_first_integer; | |
918 | ||
919 | registered_count++; | |
920 | tb[ATTR_NUM(value)].sa_attr = ATTR_NUM(value); | |
921 | tb[ATTR_NUM(value)].sa_length = ATTR_LENGTH(value); | |
922 | tb[ATTR_NUM(value)].sa_byteswap = ATTR_BSWAP(value); | |
923 | tb[ATTR_NUM(value)].sa_registered = B_TRUE; | |
924 | ||
925 | if (tb[ATTR_NUM(value)].sa_name) { | |
926 | continue; | |
927 | } | |
928 | tb[ATTR_NUM(value)].sa_name = | |
b8d06fca | 929 | kmem_zalloc(strlen(za.za_name) +1, KM_PUSHPAGE); |
428870ff BB |
930 | (void) strlcpy(tb[ATTR_NUM(value)].sa_name, za.za_name, |
931 | strlen(za.za_name) +1); | |
932 | } | |
933 | zap_cursor_fini(&zc); | |
572e2857 BB |
934 | /* |
935 | * Make sure we processed the correct number of registered | |
936 | * attributes | |
937 | */ | |
938 | if (registered_count != sa_reg_count) { | |
939 | ASSERT(error != 0); | |
940 | goto bail; | |
941 | } | |
942 | ||
428870ff BB |
943 | } |
944 | ||
945 | if (ostype == DMU_OST_ZFS) { | |
946 | for (i = 0; i != sa_legacy_attr_count; i++) { | |
947 | if (tb[i].sa_name) | |
948 | continue; | |
949 | tb[i].sa_attr = sa_legacy_attrs[i].sa_attr; | |
950 | tb[i].sa_length = sa_legacy_attrs[i].sa_length; | |
951 | tb[i].sa_byteswap = sa_legacy_attrs[i].sa_byteswap; | |
952 | tb[i].sa_registered = B_FALSE; | |
953 | tb[i].sa_name = | |
954 | kmem_zalloc(strlen(sa_legacy_attrs[i].sa_name) +1, | |
b8d06fca | 955 | KM_PUSHPAGE); |
428870ff BB |
956 | (void) strlcpy(tb[i].sa_name, |
957 | sa_legacy_attrs[i].sa_name, | |
958 | strlen(sa_legacy_attrs[i].sa_name) + 1); | |
959 | } | |
960 | } | |
961 | ||
962 | for (i = 0; i != count; i++) { | |
963 | sa_attr_type_t attr_id; | |
964 | ||
965 | attr_id = sa->sa_user_table[i]; | |
966 | if (tb[attr_id].sa_name) | |
967 | continue; | |
968 | ||
969 | tb[attr_id].sa_length = reg_attrs[i].sa_length; | |
970 | tb[attr_id].sa_byteswap = reg_attrs[i].sa_byteswap; | |
971 | tb[attr_id].sa_attr = attr_id; | |
972 | tb[attr_id].sa_name = | |
b8d06fca | 973 | kmem_zalloc(strlen(reg_attrs[i].sa_name) + 1, KM_PUSHPAGE); |
428870ff BB |
974 | (void) strlcpy(tb[attr_id].sa_name, reg_attrs[i].sa_name, |
975 | strlen(reg_attrs[i].sa_name) + 1); | |
976 | } | |
977 | ||
572e2857 | 978 | sa->sa_need_attr_registration = |
428870ff | 979 | (sa_attr_count != registered_count); |
572e2857 BB |
980 | |
981 | return (0); | |
982 | bail: | |
983 | kmem_free(sa->sa_user_table, count * sizeof (sa_attr_type_t)); | |
984 | sa->sa_user_table = NULL; | |
985 | sa_free_attr_table(sa); | |
986 | return ((error != 0) ? error : EINVAL); | |
428870ff BB |
987 | } |
988 | ||
572e2857 BB |
989 | int |
990 | sa_setup(objset_t *os, uint64_t sa_obj, sa_attr_reg_t *reg_attrs, int count, | |
991 | sa_attr_type_t **user_table) | |
428870ff BB |
992 | { |
993 | zap_cursor_t zc; | |
994 | zap_attribute_t za; | |
995 | sa_os_t *sa; | |
996 | dmu_objset_type_t ostype = dmu_objset_type(os); | |
997 | sa_attr_type_t *tb; | |
572e2857 | 998 | int error; |
428870ff BB |
999 | |
1000 | mutex_enter(&os->os_lock); | |
1001 | if (os->os_sa) { | |
1002 | mutex_enter(&os->os_sa->sa_lock); | |
1003 | mutex_exit(&os->os_lock); | |
1004 | tb = os->os_sa->sa_user_table; | |
1005 | mutex_exit(&os->os_sa->sa_lock); | |
572e2857 BB |
1006 | *user_table = tb; |
1007 | return (0); | |
428870ff BB |
1008 | } |
1009 | ||
b8d06fca | 1010 | sa = kmem_zalloc(sizeof (sa_os_t), KM_PUSHPAGE); |
428870ff BB |
1011 | mutex_init(&sa->sa_lock, NULL, MUTEX_DEFAULT, NULL); |
1012 | sa->sa_master_obj = sa_obj; | |
1013 | ||
572e2857 | 1014 | os->os_sa = sa; |
428870ff BB |
1015 | mutex_enter(&sa->sa_lock); |
1016 | mutex_exit(&os->os_lock); | |
1017 | avl_create(&sa->sa_layout_num_tree, layout_num_compare, | |
1018 | sizeof (sa_lot_t), offsetof(sa_lot_t, lot_num_node)); | |
1019 | avl_create(&sa->sa_layout_hash_tree, layout_hash_compare, | |
1020 | sizeof (sa_lot_t), offsetof(sa_lot_t, lot_hash_node)); | |
1021 | ||
1022 | if (sa_obj) { | |
428870ff BB |
1023 | error = zap_lookup(os, sa_obj, SA_LAYOUTS, |
1024 | 8, 1, &sa->sa_layout_attr_obj); | |
572e2857 BB |
1025 | if (error != 0 && error != ENOENT) |
1026 | goto fail; | |
428870ff BB |
1027 | error = zap_lookup(os, sa_obj, SA_REGISTRY, |
1028 | 8, 1, &sa->sa_reg_attr_obj); | |
572e2857 BB |
1029 | if (error != 0 && error != ENOENT) |
1030 | goto fail; | |
428870ff BB |
1031 | } |
1032 | ||
572e2857 BB |
1033 | if ((error = sa_attr_table_setup(os, reg_attrs, count)) != 0) |
1034 | goto fail; | |
428870ff BB |
1035 | |
1036 | if (sa->sa_layout_attr_obj != 0) { | |
572e2857 BB |
1037 | uint64_t layout_count; |
1038 | ||
1039 | error = zap_count(os, sa->sa_layout_attr_obj, | |
1040 | &layout_count); | |
1041 | ||
1042 | /* | |
1043 | * Layout number count should be > 0 | |
1044 | */ | |
1045 | if (error || (error == 0 && layout_count == 0)) { | |
1046 | if (error == 0) | |
1047 | error = EINVAL; | |
1048 | goto fail; | |
1049 | } | |
1050 | ||
428870ff | 1051 | for (zap_cursor_init(&zc, os, sa->sa_layout_attr_obj); |
572e2857 | 1052 | (error = zap_cursor_retrieve(&zc, &za)) == 0; |
428870ff BB |
1053 | zap_cursor_advance(&zc)) { |
1054 | sa_attr_type_t *lot_attrs; | |
1055 | uint64_t lot_num; | |
1056 | ||
1057 | lot_attrs = kmem_zalloc(sizeof (sa_attr_type_t) * | |
b8d06fca | 1058 | za.za_num_integers, KM_PUSHPAGE); |
428870ff | 1059 | |
572e2857 BB |
1060 | if ((error = (zap_lookup(os, sa->sa_layout_attr_obj, |
1061 | za.za_name, 2, za.za_num_integers, | |
1062 | lot_attrs))) != 0) { | |
1063 | kmem_free(lot_attrs, sizeof (sa_attr_type_t) * | |
1064 | za.za_num_integers); | |
1065 | break; | |
1066 | } | |
428870ff BB |
1067 | VERIFY(ddi_strtoull(za.za_name, NULL, 10, |
1068 | (unsigned long long *)&lot_num) == 0); | |
1069 | ||
1070 | (void) sa_add_layout_entry(os, lot_attrs, | |
1071 | za.za_num_integers, lot_num, | |
1072 | sa_layout_info_hash(lot_attrs, | |
1073 | za.za_num_integers), B_FALSE, NULL); | |
1074 | kmem_free(lot_attrs, sizeof (sa_attr_type_t) * | |
1075 | za.za_num_integers); | |
1076 | } | |
1077 | zap_cursor_fini(&zc); | |
572e2857 BB |
1078 | |
1079 | /* | |
1080 | * Make sure layout count matches number of entries added | |
1081 | * to AVL tree | |
1082 | */ | |
1083 | if (avl_numnodes(&sa->sa_layout_num_tree) != layout_count) { | |
1084 | ASSERT(error != 0); | |
1085 | goto fail; | |
1086 | } | |
428870ff BB |
1087 | } |
1088 | ||
1089 | /* Add special layout number for old ZNODES */ | |
1090 | if (ostype == DMU_OST_ZFS) { | |
1091 | (void) sa_add_layout_entry(os, sa_legacy_zpl_layout, | |
1092 | sa_legacy_attr_count, 0, | |
1093 | sa_layout_info_hash(sa_legacy_zpl_layout, | |
1094 | sa_legacy_attr_count), B_FALSE, NULL); | |
1095 | ||
1096 | (void) sa_add_layout_entry(os, sa_dummy_zpl_layout, 0, 1, | |
1097 | 0, B_FALSE, NULL); | |
1098 | } | |
572e2857 | 1099 | *user_table = os->os_sa->sa_user_table; |
428870ff | 1100 | mutex_exit(&sa->sa_lock); |
572e2857 BB |
1101 | return (0); |
1102 | fail: | |
1103 | os->os_sa = NULL; | |
1104 | sa_free_attr_table(sa); | |
1105 | if (sa->sa_user_table) | |
1106 | kmem_free(sa->sa_user_table, sa->sa_user_table_sz); | |
1107 | mutex_exit(&sa->sa_lock); | |
1108 | kmem_free(sa, sizeof (sa_os_t)); | |
1109 | return ((error == ECKSUM) ? EIO : error); | |
428870ff BB |
1110 | } |
1111 | ||
1112 | void | |
1113 | sa_tear_down(objset_t *os) | |
1114 | { | |
1115 | sa_os_t *sa = os->os_sa; | |
1116 | sa_lot_t *layout; | |
1117 | void *cookie; | |
428870ff BB |
1118 | |
1119 | kmem_free(sa->sa_user_table, sa->sa_user_table_sz); | |
1120 | ||
1121 | /* Free up attr table */ | |
1122 | ||
572e2857 | 1123 | sa_free_attr_table(sa); |
428870ff BB |
1124 | |
1125 | cookie = NULL; | |
c65aa5b2 | 1126 | while ((layout = avl_destroy_nodes(&sa->sa_layout_hash_tree, &cookie))){ |
428870ff | 1127 | sa_idx_tab_t *tab; |
c65aa5b2 | 1128 | while ((tab = list_head(&layout->lot_idx_tab))) { |
428870ff BB |
1129 | ASSERT(refcount_count(&tab->sa_refcount)); |
1130 | sa_idx_tab_rele(os, tab); | |
1131 | } | |
1132 | } | |
1133 | ||
1134 | cookie = NULL; | |
c65aa5b2 | 1135 | while ((layout = avl_destroy_nodes(&sa->sa_layout_num_tree, &cookie))){ |
428870ff BB |
1136 | kmem_free(layout->lot_attrs, |
1137 | sizeof (sa_attr_type_t) * layout->lot_attr_count); | |
1138 | kmem_free(layout, sizeof (sa_lot_t)); | |
1139 | } | |
1140 | ||
1141 | avl_destroy(&sa->sa_layout_hash_tree); | |
1142 | avl_destroy(&sa->sa_layout_num_tree); | |
1143 | ||
1144 | kmem_free(sa, sizeof (sa_os_t)); | |
1145 | os->os_sa = NULL; | |
1146 | } | |
1147 | ||
1148 | void | |
1149 | sa_build_idx_tab(void *hdr, void *attr_addr, sa_attr_type_t attr, | |
1150 | uint16_t length, int length_idx, boolean_t var_length, void *userp) | |
1151 | { | |
1152 | sa_idx_tab_t *idx_tab = userp; | |
1153 | ||
1154 | if (var_length) { | |
1155 | ASSERT(idx_tab->sa_variable_lengths); | |
1156 | idx_tab->sa_variable_lengths[length_idx] = length; | |
1157 | } | |
1158 | TOC_ATTR_ENCODE(idx_tab->sa_idx_tab[attr], length_idx, | |
1159 | (uint32_t)((uintptr_t)attr_addr - (uintptr_t)hdr)); | |
1160 | } | |
1161 | ||
1162 | static void | |
1163 | sa_attr_iter(objset_t *os, sa_hdr_phys_t *hdr, dmu_object_type_t type, | |
1164 | sa_iterfunc_t func, sa_lot_t *tab, void *userp) | |
1165 | { | |
1166 | void *data_start; | |
1167 | sa_lot_t *tb = tab; | |
1168 | sa_lot_t search; | |
1169 | avl_index_t loc; | |
1170 | sa_os_t *sa = os->os_sa; | |
1171 | int i; | |
1172 | uint16_t *length_start = NULL; | |
1173 | uint8_t length_idx = 0; | |
1174 | ||
1175 | if (tab == NULL) { | |
1176 | search.lot_num = SA_LAYOUT_NUM(hdr, type); | |
1177 | tb = avl_find(&sa->sa_layout_num_tree, &search, &loc); | |
1178 | ASSERT(tb); | |
1179 | } | |
1180 | ||
1181 | if (IS_SA_BONUSTYPE(type)) { | |
1182 | data_start = (void *)P2ROUNDUP(((uintptr_t)hdr + | |
1183 | offsetof(sa_hdr_phys_t, sa_lengths) + | |
1184 | (sizeof (uint16_t) * tb->lot_var_sizes)), 8); | |
1185 | length_start = hdr->sa_lengths; | |
1186 | } else { | |
1187 | data_start = hdr; | |
1188 | } | |
1189 | ||
1190 | for (i = 0; i != tb->lot_attr_count; i++) { | |
1191 | int attr_length, reg_length; | |
1192 | uint8_t idx_len; | |
1193 | ||
1194 | reg_length = sa->sa_attr_table[tb->lot_attrs[i]].sa_length; | |
1195 | if (reg_length) { | |
1196 | attr_length = reg_length; | |
1197 | idx_len = 0; | |
1198 | } else { | |
1199 | attr_length = length_start[length_idx]; | |
1200 | idx_len = length_idx++; | |
1201 | } | |
1202 | ||
1203 | func(hdr, data_start, tb->lot_attrs[i], attr_length, | |
1204 | idx_len, reg_length == 0 ? B_TRUE : B_FALSE, userp); | |
1205 | ||
1206 | data_start = (void *)P2ROUNDUP(((uintptr_t)data_start + | |
1207 | attr_length), 8); | |
1208 | } | |
1209 | } | |
1210 | ||
1211 | /*ARGSUSED*/ | |
1212 | void | |
1213 | sa_byteswap_cb(void *hdr, void *attr_addr, sa_attr_type_t attr, | |
1214 | uint16_t length, int length_idx, boolean_t variable_length, void *userp) | |
1215 | { | |
1216 | sa_handle_t *hdl = userp; | |
1217 | sa_os_t *sa = hdl->sa_os->os_sa; | |
1218 | ||
1219 | sa_bswap_table[sa->sa_attr_table[attr].sa_byteswap](attr_addr, length); | |
1220 | } | |
1221 | ||
1222 | void | |
1223 | sa_byteswap(sa_handle_t *hdl, sa_buf_type_t buftype) | |
1224 | { | |
1225 | sa_hdr_phys_t *sa_hdr_phys = SA_GET_HDR(hdl, buftype); | |
1226 | dmu_buf_impl_t *db; | |
428870ff BB |
1227 | int num_lengths = 1; |
1228 | int i; | |
1fde1e37 | 1229 | ASSERTV(sa_os_t *sa = hdl->sa_os->os_sa); |
428870ff BB |
1230 | |
1231 | ASSERT(MUTEX_HELD(&sa->sa_lock)); | |
1232 | if (sa_hdr_phys->sa_magic == SA_MAGIC) | |
1233 | return; | |
1234 | ||
1235 | db = SA_GET_DB(hdl, buftype); | |
1236 | ||
1237 | if (buftype == SA_SPILL) { | |
1238 | arc_release(db->db_buf, NULL); | |
1239 | arc_buf_thaw(db->db_buf); | |
1240 | } | |
1241 | ||
1242 | sa_hdr_phys->sa_magic = BSWAP_32(sa_hdr_phys->sa_magic); | |
1243 | sa_hdr_phys->sa_layout_info = BSWAP_16(sa_hdr_phys->sa_layout_info); | |
1244 | ||
1245 | /* | |
1246 | * Determine number of variable lenghts in header | |
1247 | * The standard 8 byte header has one for free and a | |
1248 | * 16 byte header would have 4 + 1; | |
1249 | */ | |
1250 | if (SA_HDR_SIZE(sa_hdr_phys) > 8) | |
1251 | num_lengths += (SA_HDR_SIZE(sa_hdr_phys) - 8) >> 1; | |
1252 | for (i = 0; i != num_lengths; i++) | |
1253 | sa_hdr_phys->sa_lengths[i] = | |
1254 | BSWAP_16(sa_hdr_phys->sa_lengths[i]); | |
1255 | ||
1256 | sa_attr_iter(hdl->sa_os, sa_hdr_phys, DMU_OT_SA, | |
1257 | sa_byteswap_cb, NULL, hdl); | |
1258 | ||
1259 | if (buftype == SA_SPILL) | |
1260 | arc_buf_freeze(((dmu_buf_impl_t *)hdl->sa_spill)->db_buf); | |
1261 | } | |
1262 | ||
1263 | static int | |
1264 | sa_build_index(sa_handle_t *hdl, sa_buf_type_t buftype) | |
1265 | { | |
1266 | sa_hdr_phys_t *sa_hdr_phys; | |
1267 | dmu_buf_impl_t *db = SA_GET_DB(hdl, buftype); | |
1268 | dmu_object_type_t bonustype = SA_BONUSTYPE_FROM_DB(db); | |
1269 | sa_os_t *sa = hdl->sa_os->os_sa; | |
1270 | sa_idx_tab_t *idx_tab; | |
1271 | ||
1272 | sa_hdr_phys = SA_GET_HDR(hdl, buftype); | |
1273 | ||
1274 | mutex_enter(&sa->sa_lock); | |
1275 | ||
1276 | /* Do we need to byteswap? */ | |
1277 | ||
1278 | /* only check if not old znode */ | |
1279 | if (IS_SA_BONUSTYPE(bonustype) && sa_hdr_phys->sa_magic != SA_MAGIC && | |
1280 | sa_hdr_phys->sa_magic != 0) { | |
1281 | VERIFY(BSWAP_32(sa_hdr_phys->sa_magic) == SA_MAGIC); | |
1282 | sa_byteswap(hdl, buftype); | |
1283 | } | |
1284 | ||
1285 | idx_tab = sa_find_idx_tab(hdl->sa_os, bonustype, sa_hdr_phys); | |
1286 | ||
1287 | if (buftype == SA_BONUS) | |
1288 | hdl->sa_bonus_tab = idx_tab; | |
1289 | else | |
1290 | hdl->sa_spill_tab = idx_tab; | |
1291 | ||
1292 | mutex_exit(&sa->sa_lock); | |
1293 | return (0); | |
1294 | } | |
1295 | ||
1296 | /*ARGSUSED*/ | |
1297 | void | |
1298 | sa_evict(dmu_buf_t *db, void *sap) | |
1299 | { | |
1300 | panic("evicting sa dbuf %p\n", (void *)db); | |
1301 | } | |
1302 | ||
1303 | static void | |
1304 | sa_idx_tab_rele(objset_t *os, void *arg) | |
1305 | { | |
1306 | sa_os_t *sa = os->os_sa; | |
1307 | sa_idx_tab_t *idx_tab = arg; | |
1308 | ||
1309 | if (idx_tab == NULL) | |
1310 | return; | |
1311 | ||
1312 | mutex_enter(&sa->sa_lock); | |
1313 | if (refcount_remove(&idx_tab->sa_refcount, NULL) == 0) { | |
1314 | list_remove(&idx_tab->sa_layout->lot_idx_tab, idx_tab); | |
1315 | if (idx_tab->sa_variable_lengths) | |
1316 | kmem_free(idx_tab->sa_variable_lengths, | |
1317 | sizeof (uint16_t) * | |
1318 | idx_tab->sa_layout->lot_var_sizes); | |
1319 | refcount_destroy(&idx_tab->sa_refcount); | |
1320 | kmem_free(idx_tab->sa_idx_tab, | |
1321 | sizeof (uint32_t) * sa->sa_num_attrs); | |
1322 | kmem_free(idx_tab, sizeof (sa_idx_tab_t)); | |
1323 | } | |
1324 | mutex_exit(&sa->sa_lock); | |
1325 | } | |
1326 | ||
1327 | static void | |
1328 | sa_idx_tab_hold(objset_t *os, sa_idx_tab_t *idx_tab) | |
1329 | { | |
1fde1e37 | 1330 | ASSERTV(sa_os_t *sa = os->os_sa); |
428870ff BB |
1331 | |
1332 | ASSERT(MUTEX_HELD(&sa->sa_lock)); | |
1333 | (void) refcount_add(&idx_tab->sa_refcount, NULL); | |
1334 | } | |
1335 | ||
0ece356d BB |
1336 | void |
1337 | sa_spill_rele(sa_handle_t *hdl) | |
1338 | { | |
1339 | mutex_enter(&hdl->sa_lock); | |
1340 | if (hdl->sa_spill) { | |
1341 | sa_idx_tab_rele(hdl->sa_os, hdl->sa_spill_tab); | |
1342 | dmu_buf_rele(hdl->sa_spill, NULL); | |
1343 | hdl->sa_spill = NULL; | |
1344 | hdl->sa_spill_tab = NULL; | |
1345 | } | |
1346 | mutex_exit(&hdl->sa_lock); | |
1347 | } | |
1348 | ||
428870ff BB |
1349 | void |
1350 | sa_handle_destroy(sa_handle_t *hdl) | |
1351 | { | |
1352 | mutex_enter(&hdl->sa_lock); | |
1353 | (void) dmu_buf_update_user((dmu_buf_t *)hdl->sa_bonus, hdl, | |
1354 | NULL, NULL, NULL); | |
1355 | ||
1356 | if (hdl->sa_bonus_tab) { | |
1357 | sa_idx_tab_rele(hdl->sa_os, hdl->sa_bonus_tab); | |
1358 | hdl->sa_bonus_tab = NULL; | |
1359 | } | |
1360 | if (hdl->sa_spill_tab) { | |
1361 | sa_idx_tab_rele(hdl->sa_os, hdl->sa_spill_tab); | |
1362 | hdl->sa_spill_tab = NULL; | |
1363 | } | |
1364 | ||
1365 | dmu_buf_rele(hdl->sa_bonus, NULL); | |
1366 | ||
1367 | if (hdl->sa_spill) | |
1368 | dmu_buf_rele((dmu_buf_t *)hdl->sa_spill, NULL); | |
1369 | mutex_exit(&hdl->sa_lock); | |
1370 | ||
1371 | kmem_cache_free(sa_cache, hdl); | |
1372 | } | |
1373 | ||
1374 | int | |
1375 | sa_handle_get_from_db(objset_t *os, dmu_buf_t *db, void *userp, | |
1376 | sa_handle_type_t hdl_type, sa_handle_t **handlepp) | |
1377 | { | |
1378 | int error = 0; | |
428870ff | 1379 | sa_handle_t *handle; |
428870ff | 1380 | #ifdef ZFS_DEBUG |
1fde1e37 BB |
1381 | dmu_object_info_t doi; |
1382 | ||
428870ff BB |
1383 | dmu_object_info_from_db(db, &doi); |
1384 | ASSERT(doi.doi_bonus_type == DMU_OT_SA || | |
1385 | doi.doi_bonus_type == DMU_OT_ZNODE); | |
1386 | #endif | |
1387 | /* find handle, if it exists */ | |
1388 | /* if one doesn't exist then create a new one, and initialize it */ | |
1389 | ||
1390 | handle = (hdl_type == SA_HDL_SHARED) ? dmu_buf_get_user(db) : NULL; | |
1391 | if (handle == NULL) { | |
1392 | sa_handle_t *newhandle; | |
1393 | handle = kmem_cache_alloc(sa_cache, KM_SLEEP); | |
1394 | handle->sa_userp = userp; | |
1395 | handle->sa_bonus = db; | |
1396 | handle->sa_os = os; | |
1397 | handle->sa_spill = NULL; | |
1398 | ||
1399 | error = sa_build_index(handle, SA_BONUS); | |
1400 | newhandle = (hdl_type == SA_HDL_SHARED) ? | |
1401 | dmu_buf_set_user_ie(db, handle, | |
1402 | NULL, sa_evict) : NULL; | |
1403 | ||
1404 | if (newhandle != NULL) { | |
1405 | kmem_cache_free(sa_cache, handle); | |
1406 | handle = newhandle; | |
1407 | } | |
1408 | } | |
1409 | *handlepp = handle; | |
1410 | ||
1411 | return (error); | |
1412 | } | |
1413 | ||
1414 | int | |
1415 | sa_handle_get(objset_t *objset, uint64_t objid, void *userp, | |
1416 | sa_handle_type_t hdl_type, sa_handle_t **handlepp) | |
1417 | { | |
1418 | dmu_buf_t *db; | |
1419 | int error; | |
1420 | ||
c65aa5b2 | 1421 | if ((error = dmu_bonus_hold(objset, objid, NULL, &db))) |
428870ff BB |
1422 | return (error); |
1423 | ||
1424 | return (sa_handle_get_from_db(objset, db, userp, hdl_type, | |
1425 | handlepp)); | |
1426 | } | |
1427 | ||
1428 | int | |
1429 | sa_buf_hold(objset_t *objset, uint64_t obj_num, void *tag, dmu_buf_t **db) | |
1430 | { | |
1431 | return (dmu_bonus_hold(objset, obj_num, tag, db)); | |
1432 | } | |
1433 | ||
1434 | void | |
1435 | sa_buf_rele(dmu_buf_t *db, void *tag) | |
1436 | { | |
1437 | dmu_buf_rele(db, tag); | |
1438 | } | |
1439 | ||
1440 | int | |
1441 | sa_lookup_impl(sa_handle_t *hdl, sa_bulk_attr_t *bulk, int count) | |
1442 | { | |
1443 | ASSERT(hdl); | |
1444 | ASSERT(MUTEX_HELD(&hdl->sa_lock)); | |
1445 | return (sa_attr_op(hdl, bulk, count, SA_LOOKUP, NULL)); | |
1446 | } | |
1447 | ||
1448 | int | |
1449 | sa_lookup(sa_handle_t *hdl, sa_attr_type_t attr, void *buf, uint32_t buflen) | |
1450 | { | |
1451 | int error; | |
1452 | sa_bulk_attr_t bulk; | |
1453 | ||
1454 | bulk.sa_attr = attr; | |
1455 | bulk.sa_data = buf; | |
1456 | bulk.sa_length = buflen; | |
1457 | bulk.sa_data_func = NULL; | |
1458 | ||
1459 | ASSERT(hdl); | |
1460 | mutex_enter(&hdl->sa_lock); | |
1461 | error = sa_lookup_impl(hdl, &bulk, 1); | |
1462 | mutex_exit(&hdl->sa_lock); | |
1463 | return (error); | |
1464 | } | |
1465 | ||
1466 | #ifdef _KERNEL | |
1467 | int | |
1468 | sa_lookup_uio(sa_handle_t *hdl, sa_attr_type_t attr, uio_t *uio) | |
1469 | { | |
1470 | int error; | |
1471 | sa_bulk_attr_t bulk; | |
1472 | ||
1473 | bulk.sa_data = NULL; | |
1474 | bulk.sa_attr = attr; | |
1475 | bulk.sa_data_func = NULL; | |
1476 | ||
1477 | ASSERT(hdl); | |
1478 | ||
1479 | mutex_enter(&hdl->sa_lock); | |
572e2857 | 1480 | if ((error = sa_attr_op(hdl, &bulk, 1, SA_LOOKUP, NULL)) == 0) { |
428870ff BB |
1481 | error = uiomove((void *)bulk.sa_addr, MIN(bulk.sa_size, |
1482 | uio->uio_resid), UIO_READ, uio); | |
428870ff BB |
1483 | } |
1484 | mutex_exit(&hdl->sa_lock); | |
1485 | return (error); | |
428870ff BB |
1486 | } |
1487 | #endif | |
1488 | ||
428870ff BB |
1489 | void * |
1490 | sa_find_idx_tab(objset_t *os, dmu_object_type_t bonustype, void *data) | |
1491 | { | |
1492 | sa_idx_tab_t *idx_tab; | |
1493 | sa_hdr_phys_t *hdr = (sa_hdr_phys_t *)data; | |
1494 | sa_os_t *sa = os->os_sa; | |
1495 | sa_lot_t *tb, search; | |
1496 | avl_index_t loc; | |
1497 | ||
1498 | /* | |
1499 | * Deterimine layout number. If SA node and header == 0 then | |
1500 | * force the index table to the dummy "1" empty layout. | |
1501 | * | |
1502 | * The layout number would only be zero for a newly created file | |
1503 | * that has not added any attributes yet, or with crypto enabled which | |
1504 | * doesn't write any attributes to the bonus buffer. | |
1505 | */ | |
1506 | ||
1507 | search.lot_num = SA_LAYOUT_NUM(hdr, bonustype); | |
1508 | ||
1509 | tb = avl_find(&sa->sa_layout_num_tree, &search, &loc); | |
1510 | ||
1511 | /* Verify header size is consistent with layout information */ | |
1512 | ASSERT(tb); | |
d6320ddb BB |
1513 | ASSERT((IS_SA_BONUSTYPE(bonustype) && |
1514 | SA_HDR_SIZE_MATCH_LAYOUT(hdr, tb)) || !IS_SA_BONUSTYPE(bonustype) || | |
428870ff BB |
1515 | (IS_SA_BONUSTYPE(bonustype) && hdr->sa_layout_info == 0)); |
1516 | ||
1517 | /* | |
1518 | * See if any of the already existing TOC entries can be reused? | |
1519 | */ | |
1520 | ||
1521 | for (idx_tab = list_head(&tb->lot_idx_tab); idx_tab; | |
1522 | idx_tab = list_next(&tb->lot_idx_tab, idx_tab)) { | |
1523 | boolean_t valid_idx = B_TRUE; | |
1524 | int i; | |
1525 | ||
1526 | if (tb->lot_var_sizes != 0 && | |
1527 | idx_tab->sa_variable_lengths != NULL) { | |
1528 | for (i = 0; i != tb->lot_var_sizes; i++) { | |
1529 | if (hdr->sa_lengths[i] != | |
1530 | idx_tab->sa_variable_lengths[i]) { | |
1531 | valid_idx = B_FALSE; | |
1532 | break; | |
1533 | } | |
1534 | } | |
1535 | } | |
1536 | if (valid_idx) { | |
1537 | sa_idx_tab_hold(os, idx_tab); | |
1538 | return (idx_tab); | |
1539 | } | |
1540 | } | |
1541 | ||
1542 | /* No such luck, create a new entry */ | |
b8d06fca | 1543 | idx_tab = kmem_zalloc(sizeof (sa_idx_tab_t), KM_PUSHPAGE); |
428870ff | 1544 | idx_tab->sa_idx_tab = |
b8d06fca | 1545 | kmem_zalloc(sizeof (uint32_t) * sa->sa_num_attrs, KM_PUSHPAGE); |
428870ff BB |
1546 | idx_tab->sa_layout = tb; |
1547 | refcount_create(&idx_tab->sa_refcount); | |
1548 | if (tb->lot_var_sizes) | |
1549 | idx_tab->sa_variable_lengths = kmem_alloc(sizeof (uint16_t) * | |
b8d06fca | 1550 | tb->lot_var_sizes, KM_PUSHPAGE); |
428870ff BB |
1551 | |
1552 | sa_attr_iter(os, hdr, bonustype, sa_build_idx_tab, | |
1553 | tb, idx_tab); | |
1554 | sa_idx_tab_hold(os, idx_tab); /* one hold for consumer */ | |
1555 | sa_idx_tab_hold(os, idx_tab); /* one for layout */ | |
1556 | list_insert_tail(&tb->lot_idx_tab, idx_tab); | |
1557 | return (idx_tab); | |
1558 | } | |
1559 | ||
1560 | void | |
1561 | sa_default_locator(void **dataptr, uint32_t *len, uint32_t total_len, | |
1562 | boolean_t start, void *userdata) | |
1563 | { | |
1564 | ASSERT(start); | |
1565 | ||
1566 | *dataptr = userdata; | |
1567 | *len = total_len; | |
1568 | } | |
1569 | ||
1570 | static void | |
1571 | sa_attr_register_sync(sa_handle_t *hdl, dmu_tx_t *tx) | |
1572 | { | |
1573 | uint64_t attr_value = 0; | |
1574 | sa_os_t *sa = hdl->sa_os->os_sa; | |
1575 | sa_attr_table_t *tb = sa->sa_attr_table; | |
1576 | int i; | |
1577 | ||
1578 | mutex_enter(&sa->sa_lock); | |
1579 | ||
b8864a23 | 1580 | if (!sa->sa_need_attr_registration || sa->sa_master_obj == 0) { |
428870ff BB |
1581 | mutex_exit(&sa->sa_lock); |
1582 | return; | |
1583 | } | |
1584 | ||
b8864a23 | 1585 | if (sa->sa_reg_attr_obj == 0) { |
428870ff BB |
1586 | sa->sa_reg_attr_obj = zap_create(hdl->sa_os, |
1587 | DMU_OT_SA_ATTR_REGISTRATION, DMU_OT_NONE, 0, tx); | |
572e2857 BB |
1588 | VERIFY(zap_add(hdl->sa_os, sa->sa_master_obj, |
1589 | SA_REGISTRY, 8, 1, &sa->sa_reg_attr_obj, tx) == 0); | |
428870ff BB |
1590 | } |
1591 | for (i = 0; i != sa->sa_num_attrs; i++) { | |
1592 | if (sa->sa_attr_table[i].sa_registered) | |
1593 | continue; | |
1594 | ATTR_ENCODE(attr_value, tb[i].sa_attr, tb[i].sa_length, | |
1595 | tb[i].sa_byteswap); | |
1596 | VERIFY(0 == zap_update(hdl->sa_os, sa->sa_reg_attr_obj, | |
1597 | tb[i].sa_name, 8, 1, &attr_value, tx)); | |
1598 | tb[i].sa_registered = B_TRUE; | |
1599 | } | |
1600 | sa->sa_need_attr_registration = B_FALSE; | |
1601 | mutex_exit(&sa->sa_lock); | |
1602 | } | |
1603 | ||
1604 | /* | |
1605 | * Replace all attributes with attributes specified in template. | |
1606 | * If dnode had a spill buffer then those attributes will be | |
1607 | * also be replaced, possibly with just an empty spill block | |
1608 | * | |
1609 | * This interface is intended to only be used for bulk adding of | |
1610 | * attributes for a new file. It will also be used by the ZPL | |
1611 | * when converting and old formatted znode to native SA support. | |
1612 | */ | |
1613 | int | |
1614 | sa_replace_all_by_template_locked(sa_handle_t *hdl, sa_bulk_attr_t *attr_desc, | |
1615 | int attr_count, dmu_tx_t *tx) | |
1616 | { | |
1617 | sa_os_t *sa = hdl->sa_os->os_sa; | |
1618 | ||
1619 | if (sa->sa_need_attr_registration) | |
1620 | sa_attr_register_sync(hdl, tx); | |
1621 | return (sa_build_layouts(hdl, attr_desc, attr_count, tx)); | |
1622 | } | |
1623 | ||
1624 | int | |
1625 | sa_replace_all_by_template(sa_handle_t *hdl, sa_bulk_attr_t *attr_desc, | |
1626 | int attr_count, dmu_tx_t *tx) | |
1627 | { | |
1628 | int error; | |
1629 | ||
1630 | mutex_enter(&hdl->sa_lock); | |
1631 | error = sa_replace_all_by_template_locked(hdl, attr_desc, | |
1632 | attr_count, tx); | |
1633 | mutex_exit(&hdl->sa_lock); | |
1634 | return (error); | |
1635 | } | |
1636 | ||
1637 | /* | |
1638 | * add/remove/replace a single attribute and then rewrite the entire set | |
1639 | * of attributes. | |
1640 | */ | |
1641 | static int | |
1642 | sa_modify_attrs(sa_handle_t *hdl, sa_attr_type_t newattr, | |
1643 | sa_data_op_t action, sa_data_locator_t *locator, void *datastart, | |
1644 | uint16_t buflen, dmu_tx_t *tx) | |
1645 | { | |
1646 | sa_os_t *sa = hdl->sa_os->os_sa; | |
572e2857 BB |
1647 | dmu_buf_impl_t *db = (dmu_buf_impl_t *)hdl->sa_bonus; |
1648 | dnode_t *dn; | |
428870ff BB |
1649 | sa_bulk_attr_t *attr_desc; |
1650 | void *old_data[2]; | |
1651 | int bonus_attr_count = 0; | |
82a37189 | 1652 | int bonus_data_size = 0; |
428870ff BB |
1653 | int spill_attr_count = 0; |
1654 | int error; | |
1655 | uint16_t length; | |
1656 | int i, j, k, length_idx; | |
1657 | sa_hdr_phys_t *hdr; | |
1658 | sa_idx_tab_t *idx_tab; | |
1659 | int attr_count; | |
1660 | int count; | |
1661 | ||
1662 | ASSERT(MUTEX_HELD(&hdl->sa_lock)); | |
1663 | ||
1664 | /* First make of copy of the old data */ | |
1665 | ||
572e2857 BB |
1666 | DB_DNODE_ENTER(db); |
1667 | dn = DB_DNODE(db); | |
1668 | if (dn->dn_bonuslen != 0) { | |
428870ff BB |
1669 | bonus_data_size = hdl->sa_bonus->db_size; |
1670 | old_data[0] = kmem_alloc(bonus_data_size, KM_SLEEP); | |
1671 | bcopy(hdl->sa_bonus->db_data, old_data[0], | |
1672 | hdl->sa_bonus->db_size); | |
1673 | bonus_attr_count = hdl->sa_bonus_tab->sa_layout->lot_attr_count; | |
1674 | } else { | |
1675 | old_data[0] = NULL; | |
1676 | } | |
572e2857 | 1677 | DB_DNODE_EXIT(db); |
428870ff BB |
1678 | |
1679 | /* Bring spill buffer online if it isn't currently */ | |
1680 | ||
572e2857 | 1681 | if ((error = sa_get_spill(hdl)) == 0) { |
82a37189 BB |
1682 | ASSERT3U(hdl->sa_spill->db_size, <=, SPA_MAXBLOCKSIZE); |
1683 | old_data[1] = sa_spill_alloc(KM_SLEEP); | |
428870ff BB |
1684 | bcopy(hdl->sa_spill->db_data, old_data[1], |
1685 | hdl->sa_spill->db_size); | |
1686 | spill_attr_count = | |
1687 | hdl->sa_spill_tab->sa_layout->lot_attr_count; | |
572e2857 BB |
1688 | } else if (error && error != ENOENT) { |
1689 | if (old_data[0]) | |
1690 | kmem_free(old_data[0], bonus_data_size); | |
1691 | return (error); | |
428870ff BB |
1692 | } else { |
1693 | old_data[1] = NULL; | |
1694 | } | |
1695 | ||
1696 | /* build descriptor of all attributes */ | |
1697 | ||
1698 | attr_count = bonus_attr_count + spill_attr_count; | |
1699 | if (action == SA_ADD) | |
1700 | attr_count++; | |
1701 | else if (action == SA_REMOVE) | |
1702 | attr_count--; | |
1703 | ||
1704 | attr_desc = kmem_zalloc(sizeof (sa_bulk_attr_t) * attr_count, KM_SLEEP); | |
1705 | ||
1706 | /* | |
1707 | * loop through bonus and spill buffer if it exists, and | |
1708 | * build up new attr_descriptor to reset the attributes | |
1709 | */ | |
1710 | k = j = 0; | |
1711 | count = bonus_attr_count; | |
1712 | hdr = SA_GET_HDR(hdl, SA_BONUS); | |
1713 | idx_tab = SA_IDX_TAB_GET(hdl, SA_BONUS); | |
1714 | for (; k != 2; k++) { | |
1715 | /* iterate over each attribute in layout */ | |
1716 | for (i = 0, length_idx = 0; i != count; i++) { | |
1717 | sa_attr_type_t attr; | |
1718 | ||
1719 | attr = idx_tab->sa_layout->lot_attrs[i]; | |
1720 | if (attr == newattr) { | |
1721 | if (action == SA_REMOVE) { | |
1722 | j++; | |
1723 | continue; | |
1724 | } | |
1725 | ASSERT(SA_REGISTERED_LEN(sa, attr) == 0); | |
1726 | ASSERT(action == SA_REPLACE); | |
1727 | SA_ADD_BULK_ATTR(attr_desc, j, attr, | |
1728 | locator, datastart, buflen); | |
1729 | } else { | |
1730 | length = SA_REGISTERED_LEN(sa, attr); | |
1731 | if (length == 0) { | |
1732 | length = hdr->sa_lengths[length_idx++]; | |
1733 | } | |
1734 | ||
1735 | SA_ADD_BULK_ATTR(attr_desc, j, attr, | |
1736 | NULL, (void *) | |
1737 | (TOC_OFF(idx_tab->sa_idx_tab[attr]) + | |
1738 | (uintptr_t)old_data[k]), length); | |
1739 | } | |
1740 | } | |
1741 | if (k == 0 && hdl->sa_spill) { | |
1742 | hdr = SA_GET_HDR(hdl, SA_SPILL); | |
1743 | idx_tab = SA_IDX_TAB_GET(hdl, SA_SPILL); | |
1744 | count = spill_attr_count; | |
1745 | } else { | |
1746 | break; | |
1747 | } | |
1748 | } | |
1749 | if (action == SA_ADD) { | |
1750 | length = SA_REGISTERED_LEN(sa, newattr); | |
1751 | if (length == 0) { | |
1752 | length = buflen; | |
1753 | } | |
1754 | SA_ADD_BULK_ATTR(attr_desc, j, newattr, locator, | |
1755 | datastart, buflen); | |
1756 | } | |
1757 | ||
1758 | error = sa_build_layouts(hdl, attr_desc, attr_count, tx); | |
1759 | ||
1760 | if (old_data[0]) | |
1761 | kmem_free(old_data[0], bonus_data_size); | |
1762 | if (old_data[1]) | |
82a37189 | 1763 | sa_spill_free(old_data[1]); |
428870ff BB |
1764 | kmem_free(attr_desc, sizeof (sa_bulk_attr_t) * attr_count); |
1765 | ||
1766 | return (error); | |
1767 | } | |
1768 | ||
1769 | static int | |
1770 | sa_bulk_update_impl(sa_handle_t *hdl, sa_bulk_attr_t *bulk, int count, | |
1771 | dmu_tx_t *tx) | |
1772 | { | |
1773 | int error; | |
1774 | sa_os_t *sa = hdl->sa_os->os_sa; | |
1775 | dmu_object_type_t bonustype; | |
a4758738 | 1776 | dmu_buf_t *saved_spill; |
428870ff BB |
1777 | |
1778 | ASSERT(hdl); | |
1779 | ASSERT(MUTEX_HELD(&hdl->sa_lock)); | |
1780 | ||
a4758738 JW |
1781 | bonustype = SA_BONUSTYPE_FROM_DB(SA_GET_DB(hdl, SA_BONUS)); |
1782 | saved_spill = hdl->sa_spill; | |
1783 | ||
428870ff BB |
1784 | /* sync out registration table if necessary */ |
1785 | if (sa->sa_need_attr_registration) | |
1786 | sa_attr_register_sync(hdl, tx); | |
1787 | ||
1788 | error = sa_attr_op(hdl, bulk, count, SA_UPDATE, tx); | |
1789 | if (error == 0 && !IS_SA_BONUSTYPE(bonustype) && sa->sa_update_cb) | |
1790 | sa->sa_update_cb(hdl, tx); | |
1791 | ||
a4758738 JW |
1792 | /* |
1793 | * If saved_spill is NULL and current sa_spill is not NULL that | |
1794 | * means we increased the refcount of the spill buffer through | |
1795 | * sa_get_spill() or dmu_spill_hold_by_dnode(). Therefore we | |
1796 | * must release the hold before calling dmu_tx_commit() to avoid | |
1797 | * making a copy of this buffer in dbuf_sync_leaf() due to the | |
1798 | * reference count now being greater than 1. | |
1799 | */ | |
1800 | if (!saved_spill && hdl->sa_spill) { | |
1801 | if (hdl->sa_spill_tab) { | |
1802 | sa_idx_tab_rele(hdl->sa_os, hdl->sa_spill_tab); | |
1803 | hdl->sa_spill_tab = NULL; | |
1804 | } | |
1805 | ||
1806 | dmu_buf_rele((dmu_buf_t *)hdl->sa_spill, NULL); | |
1807 | hdl->sa_spill = NULL; | |
1808 | } | |
1809 | ||
428870ff BB |
1810 | return (error); |
1811 | } | |
1812 | ||
1813 | /* | |
1814 | * update or add new attribute | |
1815 | */ | |
1816 | int | |
1817 | sa_update(sa_handle_t *hdl, sa_attr_type_t type, | |
1818 | void *buf, uint32_t buflen, dmu_tx_t *tx) | |
1819 | { | |
1820 | int error; | |
1821 | sa_bulk_attr_t bulk; | |
1822 | ||
1823 | bulk.sa_attr = type; | |
1824 | bulk.sa_data_func = NULL; | |
1825 | bulk.sa_length = buflen; | |
1826 | bulk.sa_data = buf; | |
1827 | ||
1828 | mutex_enter(&hdl->sa_lock); | |
1829 | error = sa_bulk_update_impl(hdl, &bulk, 1, tx); | |
1830 | mutex_exit(&hdl->sa_lock); | |
1831 | return (error); | |
1832 | } | |
1833 | ||
1834 | int | |
1835 | sa_update_from_cb(sa_handle_t *hdl, sa_attr_type_t attr, | |
1836 | uint32_t buflen, sa_data_locator_t *locator, void *userdata, dmu_tx_t *tx) | |
1837 | { | |
1838 | int error; | |
1839 | sa_bulk_attr_t bulk; | |
1840 | ||
1841 | bulk.sa_attr = attr; | |
1842 | bulk.sa_data = userdata; | |
1843 | bulk.sa_data_func = locator; | |
1844 | bulk.sa_length = buflen; | |
1845 | ||
1846 | mutex_enter(&hdl->sa_lock); | |
1847 | error = sa_bulk_update_impl(hdl, &bulk, 1, tx); | |
1848 | mutex_exit(&hdl->sa_lock); | |
1849 | return (error); | |
1850 | } | |
1851 | ||
1852 | /* | |
1853 | * Return size of an attribute | |
1854 | */ | |
1855 | ||
1856 | int | |
1857 | sa_size(sa_handle_t *hdl, sa_attr_type_t attr, int *size) | |
1858 | { | |
1859 | sa_bulk_attr_t bulk; | |
572e2857 | 1860 | int error; |
428870ff BB |
1861 | |
1862 | bulk.sa_data = NULL; | |
1863 | bulk.sa_attr = attr; | |
1864 | bulk.sa_data_func = NULL; | |
1865 | ||
1866 | ASSERT(hdl); | |
1867 | mutex_enter(&hdl->sa_lock); | |
572e2857 | 1868 | if ((error = sa_attr_op(hdl, &bulk, 1, SA_LOOKUP, NULL)) != 0) { |
428870ff | 1869 | mutex_exit(&hdl->sa_lock); |
572e2857 | 1870 | return (error); |
428870ff BB |
1871 | } |
1872 | *size = bulk.sa_size; | |
1873 | ||
1874 | mutex_exit(&hdl->sa_lock); | |
1875 | return (0); | |
1876 | } | |
1877 | ||
1878 | int | |
1879 | sa_bulk_lookup_locked(sa_handle_t *hdl, sa_bulk_attr_t *attrs, int count) | |
1880 | { | |
1881 | ASSERT(hdl); | |
1882 | ASSERT(MUTEX_HELD(&hdl->sa_lock)); | |
1883 | return (sa_lookup_impl(hdl, attrs, count)); | |
1884 | } | |
1885 | ||
1886 | int | |
1887 | sa_bulk_lookup(sa_handle_t *hdl, sa_bulk_attr_t *attrs, int count) | |
1888 | { | |
1889 | int error; | |
1890 | ||
1891 | ASSERT(hdl); | |
1892 | mutex_enter(&hdl->sa_lock); | |
1893 | error = sa_bulk_lookup_locked(hdl, attrs, count); | |
1894 | mutex_exit(&hdl->sa_lock); | |
1895 | return (error); | |
1896 | } | |
1897 | ||
1898 | int | |
1899 | sa_bulk_update(sa_handle_t *hdl, sa_bulk_attr_t *attrs, int count, dmu_tx_t *tx) | |
1900 | { | |
1901 | int error; | |
1902 | ||
1903 | ASSERT(hdl); | |
1904 | mutex_enter(&hdl->sa_lock); | |
1905 | error = sa_bulk_update_impl(hdl, attrs, count, tx); | |
1906 | mutex_exit(&hdl->sa_lock); | |
1907 | return (error); | |
1908 | } | |
1909 | ||
1910 | int | |
1911 | sa_remove(sa_handle_t *hdl, sa_attr_type_t attr, dmu_tx_t *tx) | |
1912 | { | |
1913 | int error; | |
1914 | ||
1915 | mutex_enter(&hdl->sa_lock); | |
1916 | error = sa_modify_attrs(hdl, attr, SA_REMOVE, NULL, | |
1917 | NULL, 0, tx); | |
1918 | mutex_exit(&hdl->sa_lock); | |
1919 | return (error); | |
1920 | } | |
1921 | ||
1922 | void | |
1923 | sa_object_info(sa_handle_t *hdl, dmu_object_info_t *doi) | |
1924 | { | |
1925 | dmu_object_info_from_db((dmu_buf_t *)hdl->sa_bonus, doi); | |
1926 | } | |
1927 | ||
1928 | void | |
1929 | sa_object_size(sa_handle_t *hdl, uint32_t *blksize, u_longlong_t *nblocks) | |
1930 | { | |
1931 | dmu_object_size_from_db((dmu_buf_t *)hdl->sa_bonus, | |
1932 | blksize, nblocks); | |
1933 | } | |
1934 | ||
1935 | void | |
1936 | sa_update_user(sa_handle_t *newhdl, sa_handle_t *oldhdl) | |
1937 | { | |
1938 | (void) dmu_buf_update_user((dmu_buf_t *)newhdl->sa_bonus, | |
1939 | oldhdl, newhdl, NULL, sa_evict); | |
1940 | oldhdl->sa_bonus = NULL; | |
1941 | } | |
1942 | ||
1943 | void | |
1944 | sa_set_userp(sa_handle_t *hdl, void *ptr) | |
1945 | { | |
1946 | hdl->sa_userp = ptr; | |
1947 | } | |
1948 | ||
1949 | dmu_buf_t * | |
1950 | sa_get_db(sa_handle_t *hdl) | |
1951 | { | |
1952 | return ((dmu_buf_t *)hdl->sa_bonus); | |
1953 | } | |
1954 | ||
1955 | void * | |
1956 | sa_get_userdata(sa_handle_t *hdl) | |
1957 | { | |
1958 | return (hdl->sa_userp); | |
1959 | } | |
1960 | ||
1961 | void | |
1962 | sa_register_update_callback_locked(objset_t *os, sa_update_cb_t *func) | |
1963 | { | |
1964 | ASSERT(MUTEX_HELD(&os->os_sa->sa_lock)); | |
1965 | os->os_sa->sa_update_cb = func; | |
1966 | } | |
1967 | ||
1968 | void | |
1969 | sa_register_update_callback(objset_t *os, sa_update_cb_t *func) | |
1970 | { | |
1971 | ||
1972 | mutex_enter(&os->os_sa->sa_lock); | |
1973 | sa_register_update_callback_locked(os, func); | |
1974 | mutex_exit(&os->os_sa->sa_lock); | |
1975 | } | |
1976 | ||
1977 | uint64_t | |
1978 | sa_handle_object(sa_handle_t *hdl) | |
1979 | { | |
1980 | return (hdl->sa_bonus->db_object); | |
1981 | } | |
1982 | ||
1983 | boolean_t | |
1984 | sa_enabled(objset_t *os) | |
1985 | { | |
1986 | return (os->os_sa == NULL); | |
1987 | } | |
1988 | ||
1989 | int | |
1990 | sa_set_sa_object(objset_t *os, uint64_t sa_object) | |
1991 | { | |
1992 | sa_os_t *sa = os->os_sa; | |
1993 | ||
1994 | if (sa->sa_master_obj) | |
1995 | return (1); | |
1996 | ||
1997 | sa->sa_master_obj = sa_object; | |
1998 | ||
1999 | return (0); | |
2000 | } | |
2001 | ||
2002 | int | |
2003 | sa_hdrsize(void *arg) | |
2004 | { | |
2005 | sa_hdr_phys_t *hdr = arg; | |
2006 | ||
2007 | return (SA_HDR_SIZE(hdr)); | |
2008 | } | |
2009 | ||
2010 | void | |
2011 | sa_handle_lock(sa_handle_t *hdl) | |
2012 | { | |
2013 | ASSERT(hdl); | |
2014 | mutex_enter(&hdl->sa_lock); | |
2015 | } | |
2016 | ||
2017 | void | |
2018 | sa_handle_unlock(sa_handle_t *hdl) | |
2019 | { | |
2020 | ASSERT(hdl); | |
2021 | mutex_exit(&hdl->sa_lock); | |
2022 | } | |
e45aa452 BB |
2023 | |
2024 | #ifdef _KERNEL | |
2025 | EXPORT_SYMBOL(sa_handle_get); | |
2026 | EXPORT_SYMBOL(sa_handle_get_from_db); | |
2027 | EXPORT_SYMBOL(sa_handle_destroy); | |
2028 | EXPORT_SYMBOL(sa_buf_hold); | |
2029 | EXPORT_SYMBOL(sa_buf_rele); | |
0ece356d | 2030 | EXPORT_SYMBOL(sa_spill_rele); |
e45aa452 BB |
2031 | EXPORT_SYMBOL(sa_lookup); |
2032 | EXPORT_SYMBOL(sa_update); | |
2033 | EXPORT_SYMBOL(sa_remove); | |
2034 | EXPORT_SYMBOL(sa_bulk_lookup); | |
2035 | EXPORT_SYMBOL(sa_bulk_lookup_locked); | |
2036 | EXPORT_SYMBOL(sa_bulk_update); | |
2037 | EXPORT_SYMBOL(sa_size); | |
2038 | EXPORT_SYMBOL(sa_update_from_cb); | |
2039 | EXPORT_SYMBOL(sa_object_info); | |
2040 | EXPORT_SYMBOL(sa_object_size); | |
2041 | EXPORT_SYMBOL(sa_update_user); | |
2042 | EXPORT_SYMBOL(sa_get_userdata); | |
2043 | EXPORT_SYMBOL(sa_set_userp); | |
2044 | EXPORT_SYMBOL(sa_get_db); | |
2045 | EXPORT_SYMBOL(sa_handle_object); | |
2046 | EXPORT_SYMBOL(sa_register_update_callback); | |
2047 | EXPORT_SYMBOL(sa_setup); | |
2048 | EXPORT_SYMBOL(sa_replace_all_by_template); | |
2049 | EXPORT_SYMBOL(sa_replace_all_by_template_locked); | |
2050 | EXPORT_SYMBOL(sa_enabled); | |
2051 | EXPORT_SYMBOL(sa_cache_init); | |
2052 | EXPORT_SYMBOL(sa_cache_fini); | |
82a37189 BB |
2053 | EXPORT_SYMBOL(sa_spill_alloc); |
2054 | EXPORT_SYMBOL(sa_spill_free); | |
e45aa452 BB |
2055 | EXPORT_SYMBOL(sa_set_sa_object); |
2056 | EXPORT_SYMBOL(sa_hdrsize); | |
2057 | EXPORT_SYMBOL(sa_handle_lock); | |
2058 | EXPORT_SYMBOL(sa_handle_unlock); | |
2059 | EXPORT_SYMBOL(sa_lookup_uio); | |
2060 | #endif /* _KERNEL */ |