Commit | Line | Data |
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d7e09d03 PT |
1 | /* |
2 | * GPL HEADER START | |
3 | * | |
4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 only, | |
8 | * as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License version 2 for more details (a copy is included | |
14 | * in the LICENSE file that accompanied this code). | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * version 2 along with this program; If not, see | |
18 | * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf | |
19 | * | |
20 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
21 | * CA 95054 USA or visit www.sun.com if you need additional information or | |
22 | * have any questions. | |
23 | * | |
24 | * GPL HEADER END | |
25 | */ | |
26 | /* | |
27 | * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. | |
28 | * Use is subject to license terms. | |
29 | * | |
1dc563a6 | 30 | * Copyright (c) 2011, 2015, Intel Corporation. |
d7e09d03 PT |
31 | */ |
32 | /* | |
33 | * This file is part of Lustre, http://www.lustre.org/ | |
34 | * Lustre is a trademark of Sun Microsystems, Inc. | |
35 | * | |
36 | * lustre/llite/dir.c | |
37 | * | |
38 | * Directory code for lustre client. | |
39 | */ | |
40 | ||
41 | #include <linux/fs.h> | |
42 | #include <linux/pagemap.h> | |
43 | #include <linux/mm.h> | |
31982482 | 44 | #include <linux/uaccess.h> |
995c8b4a | 45 | #include <linux/buffer_head.h> /* for wait_on_buffer */ |
d7e09d03 | 46 | #include <linux/pagevec.h> |
2870cd10 | 47 | #include <linux/prefetch.h> |
d7e09d03 PT |
48 | |
49 | #define DEBUG_SUBSYSTEM S_LLITE | |
50 | ||
67a235f5 GKH |
51 | #include "../include/obd_support.h" |
52 | #include "../include/obd_class.h" | |
53 | #include "../include/lustre_lib.h" | |
54 | #include "../include/lustre/lustre_idl.h" | |
55 | #include "../include/lustre_lite.h" | |
56 | #include "../include/lustre_dlm.h" | |
57 | #include "../include/lustre_fid.h" | |
e2780478 | 58 | #include "../include/lustre_kernelcomm.h" |
d7e09d03 PT |
59 | #include "llite_internal.h" |
60 | ||
61 | /* | |
62 | * (new) readdir implementation overview. | |
63 | * | |
64 | * Original lustre readdir implementation cached exact copy of raw directory | |
65 | * pages on the client. These pages were indexed in client page cache by | |
66 | * logical offset in the directory file. This design, while very simple and | |
67 | * intuitive had some inherent problems: | |
68 | * | |
69 | * . it implies that byte offset to the directory entry serves as a | |
70 | * telldir(3)/seekdir(3) cookie, but that offset is not stable: in | |
71 | * ext3/htree directory entries may move due to splits, and more | |
72 | * importantly, | |
73 | * | |
74 | * . it is incompatible with the design of split directories for cmd3, | |
75 | * that assumes that names are distributed across nodes based on their | |
76 | * hash, and so readdir should be done in hash order. | |
77 | * | |
78 | * New readdir implementation does readdir in hash order, and uses hash of a | |
79 | * file name as a telldir/seekdir cookie. This led to number of complications: | |
80 | * | |
81 | * . hash is not unique, so it cannot be used to index cached directory | |
82 | * pages on the client (note, that it requires a whole pageful of hash | |
83 | * collided entries to cause two pages to have identical hashes); | |
84 | * | |
85 | * . hash is not unique, so it cannot, strictly speaking, be used as an | |
86 | * entry cookie. ext3/htree has the same problem and lustre implementation | |
87 | * mimics their solution: seekdir(hash) positions directory at the first | |
88 | * entry with the given hash. | |
89 | * | |
90 | * Client side. | |
91 | * | |
92 | * 0. caching | |
93 | * | |
94 | * Client caches directory pages using hash of the first entry as an index. As | |
95 | * noted above hash is not unique, so this solution doesn't work as is: | |
96 | * special processing is needed for "page hash chains" (i.e., sequences of | |
97 | * pages filled with entries all having the same hash value). | |
98 | * | |
99 | * First, such chains have to be detected. To this end, server returns to the | |
100 | * client the hash of the first entry on the page next to one returned. When | |
101 | * client detects that this hash is the same as hash of the first entry on the | |
102 | * returned page, page hash collision has to be handled. Pages in the | |
103 | * hash chain, except first one, are termed "overflow pages". | |
104 | * | |
105 | * Solution to index uniqueness problem is to not cache overflow | |
106 | * pages. Instead, when page hash collision is detected, all overflow pages | |
107 | * from emerging chain are immediately requested from the server and placed in | |
108 | * a special data structure (struct ll_dir_chain). This data structure is used | |
109 | * by ll_readdir() to process entries from overflow pages. When readdir | |
110 | * invocation finishes, overflow pages are discarded. If page hash collision | |
111 | * chain weren't completely processed, next call to readdir will again detect | |
112 | * page hash collision, again read overflow pages in, process next portion of | |
113 | * entries and again discard the pages. This is not as wasteful as it looks, | |
114 | * because, given reasonable hash, page hash collisions are extremely rare. | |
115 | * | |
116 | * 1. directory positioning | |
117 | * | |
118 | * When seekdir(hash) is called, original | |
119 | * | |
120 | * | |
121 | * | |
122 | * | |
123 | * | |
124 | * | |
125 | * | |
126 | * | |
127 | * Server. | |
128 | * | |
129 | * identification of and access to overflow pages | |
130 | * | |
131 | * page format | |
132 | * | |
133 | * Page in MDS_READPAGE RPC is packed in LU_PAGE_SIZE, and each page contains | |
134 | * a header lu_dirpage which describes the start/end hash, and whether this | |
135 | * page is empty (contains no dir entry) or hash collide with next page. | |
136 | * After client receives reply, several pages will be integrated into dir page | |
ea1754a0 KS |
137 | * in PAGE_SIZE (if PAGE_SIZE greater than LU_PAGE_SIZE), and the lu_dirpage |
138 | * for this integrated page will be adjusted. See lmv_adjust_dirpages(). | |
d7e09d03 PT |
139 | * |
140 | */ | |
141 | ||
142 | /* returns the page unlocked, but with a reference */ | |
143 | static int ll_dir_filler(void *_hash, struct page *page0) | |
144 | { | |
145 | struct inode *inode = page0->mapping->host; | |
146 | int hash64 = ll_i2sbi(inode)->ll_flags & LL_SBI_64BIT_HASH; | |
147 | struct obd_export *exp = ll_i2sbi(inode)->ll_md_exp; | |
148 | struct ptlrpc_request *request; | |
149 | struct mdt_body *body; | |
150 | struct md_op_data *op_data; | |
151 | __u64 hash = *((__u64 *)_hash); | |
152 | struct page **page_pool; | |
153 | struct page *page; | |
154 | struct lu_dirpage *dp; | |
09cbfeaf | 155 | int max_pages = ll_i2sbi(inode)->ll_md_brw_size >> PAGE_SHIFT; |
d7e09d03 PT |
156 | int nrdpgs = 0; /* number of pages read actually */ |
157 | int npages; | |
158 | int i; | |
159 | int rc; | |
d7e09d03 | 160 | |
b0f5aad5 | 161 | CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p) hash %llu\n", |
d7e09d03 PT |
162 | inode->i_ino, inode->i_generation, inode, hash); |
163 | ||
164 | LASSERT(max_pages > 0 && max_pages <= MD_MAX_BRW_PAGES); | |
165 | ||
0fa3b9d3 | 166 | page_pool = kcalloc(max_pages, sizeof(page), GFP_NOFS); |
496a51bd | 167 | if (page_pool) { |
d7e09d03 PT |
168 | page_pool[0] = page0; |
169 | } else { | |
170 | page_pool = &page0; | |
171 | max_pages = 1; | |
172 | } | |
173 | for (npages = 1; npages < max_pages; npages++) { | |
174 | page = page_cache_alloc_cold(inode->i_mapping); | |
175 | if (!page) | |
176 | break; | |
177 | page_pool[npages] = page; | |
178 | } | |
179 | ||
180 | op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0, | |
181 | LUSTRE_OPC_ANY, NULL); | |
182 | op_data->op_npages = npages; | |
183 | op_data->op_offset = hash; | |
184 | rc = md_readpage(exp, op_data, page_pool, &request); | |
185 | ll_finish_md_op_data(op_data); | |
c67587a7 LS |
186 | if (rc < 0) { |
187 | /* page0 is special, which was added into page cache early */ | |
188 | delete_from_page_cache(page0); | |
189 | } else if (rc == 0) { | |
d7e09d03 PT |
190 | body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY); |
191 | /* Checked by mdc_readpage() */ | |
d7e09d03 PT |
192 | if (body->valid & OBD_MD_FLSIZE) |
193 | cl_isize_write(inode, body->size); | |
194 | ||
09cbfeaf KS |
195 | nrdpgs = (request->rq_bulk->bd_nob_transferred+PAGE_SIZE-1) |
196 | >> PAGE_SHIFT; | |
d7e09d03 PT |
197 | SetPageUptodate(page0); |
198 | } | |
199 | unlock_page(page0); | |
200 | ptlrpc_req_finished(request); | |
201 | ||
202 | CDEBUG(D_VFSTRACE, "read %d/%d pages\n", nrdpgs, npages); | |
203 | ||
d7e09d03 PT |
204 | for (i = 1; i < npages; i++) { |
205 | unsigned long offset; | |
206 | int ret; | |
207 | ||
208 | page = page_pool[i]; | |
209 | ||
210 | if (rc < 0 || i >= nrdpgs) { | |
09cbfeaf | 211 | put_page(page); |
d7e09d03 PT |
212 | continue; |
213 | } | |
214 | ||
215 | SetPageUptodate(page); | |
216 | ||
217 | dp = kmap(page); | |
218 | hash = le64_to_cpu(dp->ldp_hash_start); | |
219 | kunmap(page); | |
220 | ||
221 | offset = hash_x_index(hash, hash64); | |
222 | ||
223 | prefetchw(&page->flags); | |
224 | ret = add_to_page_cache_lru(page, inode->i_mapping, offset, | |
063d99b4 | 225 | GFP_NOFS); |
d7e09d03 PT |
226 | if (ret == 0) { |
227 | unlock_page(page); | |
d7e09d03 | 228 | } else { |
2d00bd17 JP |
229 | CDEBUG(D_VFSTRACE, "page %lu add to page cache failed: %d\n", |
230 | offset, ret); | |
d7e09d03 | 231 | } |
09cbfeaf | 232 | put_page(page); |
d7e09d03 | 233 | } |
d7e09d03 PT |
234 | |
235 | if (page_pool != &page0) | |
97903a26 | 236 | kfree(page_pool); |
d7e09d03 PT |
237 | return rc; |
238 | } | |
239 | ||
d7e09d03 PT |
240 | void ll_release_page(struct page *page, int remove) |
241 | { | |
242 | kunmap(page); | |
243 | if (remove) { | |
244 | lock_page(page); | |
6e16818b | 245 | if (likely(page->mapping)) |
d7e09d03 PT |
246 | truncate_complete_page(page->mapping, page); |
247 | unlock_page(page); | |
248 | } | |
09cbfeaf | 249 | put_page(page); |
d7e09d03 PT |
250 | } |
251 | ||
252 | /* | |
253 | * Find, kmap and return page that contains given hash. | |
254 | */ | |
255 | static struct page *ll_dir_page_locate(struct inode *dir, __u64 *hash, | |
256 | __u64 *start, __u64 *end) | |
257 | { | |
258 | int hash64 = ll_i2sbi(dir)->ll_flags & LL_SBI_64BIT_HASH; | |
259 | struct address_space *mapping = dir->i_mapping; | |
260 | /* | |
261 | * Complement of hash is used as an index so that | |
262 | * radix_tree_gang_lookup() can be used to find a page with starting | |
263 | * hash _smaller_ than one we are looking for. | |
264 | */ | |
265 | unsigned long offset = hash_x_index(*hash, hash64); | |
266 | struct page *page; | |
267 | int found; | |
268 | ||
12afe493 | 269 | spin_lock_irq(&mapping->tree_lock); |
d7e09d03 PT |
270 | found = radix_tree_gang_lookup(&mapping->page_tree, |
271 | (void **)&page, offset, 1); | |
437dfb20 | 272 | if (found > 0 && !radix_tree_exceptional_entry(page)) { |
d7e09d03 PT |
273 | struct lu_dirpage *dp; |
274 | ||
09cbfeaf | 275 | get_page(page); |
12afe493 | 276 | spin_unlock_irq(&mapping->tree_lock); |
d7e09d03 PT |
277 | /* |
278 | * In contrast to find_lock_page() we are sure that directory | |
279 | * page cannot be truncated (while DLM lock is held) and, | |
280 | * hence, can avoid restart. | |
281 | * | |
282 | * In fact, page cannot be locked here at all, because | |
283 | * ll_dir_filler() does synchronous io. | |
284 | */ | |
285 | wait_on_page_locked(page); | |
286 | if (PageUptodate(page)) { | |
287 | dp = kmap(page); | |
288 | if (BITS_PER_LONG == 32 && hash64) { | |
289 | *start = le64_to_cpu(dp->ldp_hash_start) >> 32; | |
290 | *end = le64_to_cpu(dp->ldp_hash_end) >> 32; | |
291 | *hash = *hash >> 32; | |
292 | } else { | |
293 | *start = le64_to_cpu(dp->ldp_hash_start); | |
294 | *end = le64_to_cpu(dp->ldp_hash_end); | |
295 | } | |
55f5a824 GKH |
296 | LASSERTF(*start <= *hash, "start = %#llx,end = %#llx,hash = %#llx\n", |
297 | *start, *end, *hash); | |
b0f5aad5 | 298 | CDEBUG(D_VFSTRACE, "page %lu [%llu %llu], hash %llu\n", |
d7e09d03 PT |
299 | offset, *start, *end, *hash); |
300 | if (*hash > *end) { | |
301 | ll_release_page(page, 0); | |
302 | page = NULL; | |
303 | } else if (*end != *start && *hash == *end) { | |
304 | /* | |
305 | * upon hash collision, remove this page, | |
306 | * otherwise put page reference, and | |
307 | * ll_get_dir_page() will issue RPC to fetch | |
308 | * the page we want. | |
309 | */ | |
310 | ll_release_page(page, | |
311 | le32_to_cpu(dp->ldp_flags) & LDF_COLLIDE); | |
312 | page = NULL; | |
313 | } | |
314 | } else { | |
09cbfeaf | 315 | put_page(page); |
d7e09d03 PT |
316 | page = ERR_PTR(-EIO); |
317 | } | |
318 | ||
319 | } else { | |
12afe493 | 320 | spin_unlock_irq(&mapping->tree_lock); |
d7e09d03 PT |
321 | page = NULL; |
322 | } | |
323 | return page; | |
324 | } | |
325 | ||
326 | struct page *ll_get_dir_page(struct inode *dir, __u64 hash, | |
327 | struct ll_dir_chain *chain) | |
328 | { | |
329 | ldlm_policy_data_t policy = {.l_inodebits = {MDS_INODELOCK_UPDATE} }; | |
330 | struct address_space *mapping = dir->i_mapping; | |
331 | struct lustre_handle lockh; | |
332 | struct lu_dirpage *dp; | |
333 | struct page *page; | |
52ee0d20 | 334 | enum ldlm_mode mode; |
d7e09d03 PT |
335 | int rc; |
336 | __u64 start = 0; | |
337 | __u64 end = 0; | |
338 | __u64 lhash = hash; | |
339 | struct ll_inode_info *lli = ll_i2info(dir); | |
340 | int hash64 = ll_i2sbi(dir)->ll_flags & LL_SBI_64BIT_HASH; | |
341 | ||
342 | mode = LCK_PR; | |
343 | rc = md_lock_match(ll_i2sbi(dir)->ll_md_exp, LDLM_FL_BLOCK_GRANTED, | |
344 | ll_inode2fid(dir), LDLM_IBITS, &policy, mode, &lockh); | |
345 | if (!rc) { | |
f2145eae BK |
346 | struct ldlm_enqueue_info einfo = { |
347 | .ei_type = LDLM_IBITS, | |
348 | .ei_mode = mode, | |
349 | .ei_cb_bl = ll_md_blocking_ast, | |
350 | .ei_cb_cp = ldlm_completion_ast, | |
351 | }; | |
d7e09d03 PT |
352 | struct lookup_intent it = { .it_op = IT_READDIR }; |
353 | struct ptlrpc_request *request; | |
354 | struct md_op_data *op_data; | |
355 | ||
588de43a | 356 | op_data = ll_prep_md_op_data(NULL, dir, dir, NULL, 0, 0, |
e15ba45d | 357 | LUSTRE_OPC_ANY, NULL); |
d7e09d03 PT |
358 | if (IS_ERR(op_data)) |
359 | return (void *)op_data; | |
360 | ||
361 | rc = md_enqueue(ll_i2sbi(dir)->ll_md_exp, &einfo, &it, | |
362 | op_data, &lockh, NULL, 0, NULL, 0); | |
363 | ||
364 | ll_finish_md_op_data(op_data); | |
365 | ||
366 | request = (struct ptlrpc_request *)it.d.lustre.it_data; | |
367 | if (request) | |
368 | ptlrpc_req_finished(request); | |
369 | if (rc < 0) { | |
e15ba45d OD |
370 | CERROR("lock enqueue: " DFID " at %llu: rc %d\n", |
371 | PFID(ll_inode2fid(dir)), hash, rc); | |
d7e09d03 PT |
372 | return ERR_PTR(rc); |
373 | } | |
374 | ||
375 | CDEBUG(D_INODE, "setting lr_lvb_inode to inode %p (%lu/%u)\n", | |
376 | dir, dir->i_ino, dir->i_generation); | |
377 | md_set_lock_data(ll_i2sbi(dir)->ll_md_exp, | |
378 | &it.d.lustre.it_lock_handle, dir, NULL); | |
379 | } else { | |
380 | /* for cross-ref object, l_ast_data of the lock may not be set, | |
c0894c6c OD |
381 | * we reset it here |
382 | */ | |
d7e09d03 PT |
383 | md_set_lock_data(ll_i2sbi(dir)->ll_md_exp, &lockh.cookie, |
384 | dir, NULL); | |
385 | } | |
386 | ldlm_lock_dump_handle(D_OTHER, &lockh); | |
387 | ||
388 | mutex_lock(&lli->lli_readdir_mutex); | |
389 | page = ll_dir_page_locate(dir, &lhash, &start, &end); | |
390 | if (IS_ERR(page)) { | |
b0f5aad5 | 391 | CERROR("dir page locate: "DFID" at %llu: rc %ld\n", |
d7e09d03 | 392 | PFID(ll_inode2fid(dir)), lhash, PTR_ERR(page)); |
34e1f2bb | 393 | goto out_unlock; |
6e16818b | 394 | } else if (page) { |
d7e09d03 PT |
395 | /* |
396 | * XXX nikita: not entirely correct handling of a corner case: | |
397 | * suppose hash chain of entries with hash value HASH crosses | |
398 | * border between pages P0 and P1. First both P0 and P1 are | |
399 | * cached, seekdir() is called for some entry from the P0 part | |
400 | * of the chain. Later P0 goes out of cache. telldir(HASH) | |
401 | * happens and finds P1, as it starts with matching hash | |
402 | * value. Remaining entries from P0 part of the chain are | |
403 | * skipped. (Is that really a bug?) | |
404 | * | |
405 | * Possible solutions: 0. don't cache P1 is such case, handle | |
406 | * it as an "overflow" page. 1. invalidate all pages at | |
407 | * once. 2. use HASH|1 as an index for P1. | |
408 | */ | |
34e1f2bb | 409 | goto hash_collision; |
d7e09d03 PT |
410 | } |
411 | ||
412 | page = read_cache_page(mapping, hash_x_index(hash, hash64), | |
413 | ll_dir_filler, &lhash); | |
414 | if (IS_ERR(page)) { | |
b0f5aad5 | 415 | CERROR("read cache page: "DFID" at %llu: rc %ld\n", |
d7e09d03 | 416 | PFID(ll_inode2fid(dir)), hash, PTR_ERR(page)); |
34e1f2bb | 417 | goto out_unlock; |
d7e09d03 PT |
418 | } |
419 | ||
420 | wait_on_page_locked(page); | |
421 | (void)kmap(page); | |
422 | if (!PageUptodate(page)) { | |
b0f5aad5 | 423 | CERROR("page not updated: "DFID" at %llu: rc %d\n", |
d7e09d03 PT |
424 | PFID(ll_inode2fid(dir)), hash, -5); |
425 | goto fail; | |
426 | } | |
427 | if (!PageChecked(page)) | |
c6ef5b91 SB |
428 | /* XXX: check page format later */ |
429 | SetPageChecked(page); | |
d7e09d03 | 430 | if (PageError(page)) { |
b0f5aad5 | 431 | CERROR("page error: "DFID" at %llu: rc %d\n", |
d7e09d03 PT |
432 | PFID(ll_inode2fid(dir)), hash, -5); |
433 | goto fail; | |
434 | } | |
435 | hash_collision: | |
436 | dp = page_address(page); | |
437 | if (BITS_PER_LONG == 32 && hash64) { | |
438 | start = le64_to_cpu(dp->ldp_hash_start) >> 32; | |
439 | end = le64_to_cpu(dp->ldp_hash_end) >> 32; | |
440 | lhash = hash >> 32; | |
441 | } else { | |
442 | start = le64_to_cpu(dp->ldp_hash_start); | |
443 | end = le64_to_cpu(dp->ldp_hash_end); | |
444 | lhash = hash; | |
445 | } | |
446 | if (end == start) { | |
447 | LASSERT(start == lhash); | |
b0f5aad5 | 448 | CWARN("Page-wide hash collision: %llu\n", end); |
d7e09d03 | 449 | if (BITS_PER_LONG == 32 && hash64) |
b0f5aad5 | 450 | CWARN("Real page-wide hash collision at [%llu %llu] with hash %llu\n", |
d7e09d03 PT |
451 | le64_to_cpu(dp->ldp_hash_start), |
452 | le64_to_cpu(dp->ldp_hash_end), hash); | |
453 | /* | |
454 | * Fetch whole overflow chain... | |
455 | * | |
456 | * XXX not yet. | |
457 | */ | |
458 | goto fail; | |
459 | } | |
460 | out_unlock: | |
461 | mutex_unlock(&lli->lli_readdir_mutex); | |
462 | ldlm_lock_decref(&lockh, mode); | |
463 | return page; | |
464 | ||
465 | fail: | |
466 | ll_release_page(page, 1); | |
467 | page = ERR_PTR(-EIO); | |
468 | goto out_unlock; | |
469 | } | |
470 | ||
0b09d381 | 471 | int ll_dir_read(struct inode *inode, struct dir_context *ctx) |
d7e09d03 PT |
472 | { |
473 | struct ll_inode_info *info = ll_i2info(inode); | |
474 | struct ll_sb_info *sbi = ll_i2sbi(inode); | |
0b09d381 | 475 | __u64 pos = ctx->pos; |
d7e09d03 PT |
476 | int api32 = ll_need_32bit_api(sbi); |
477 | int hash64 = sbi->ll_flags & LL_SBI_64BIT_HASH; | |
478 | struct page *page; | |
479 | struct ll_dir_chain chain; | |
480 | int done = 0; | |
481 | int rc = 0; | |
d7e09d03 PT |
482 | |
483 | ll_dir_chain_init(&chain); | |
484 | ||
485 | page = ll_get_dir_page(inode, pos, &chain); | |
486 | ||
487 | while (rc == 0 && !done) { | |
488 | struct lu_dirpage *dp; | |
489 | struct lu_dirent *ent; | |
490 | ||
491 | if (!IS_ERR(page)) { | |
492 | /* | |
493 | * If page is empty (end of directory is reached), | |
494 | * use this value. | |
495 | */ | |
496 | __u64 hash = MDS_DIR_END_OFF; | |
497 | __u64 next; | |
498 | ||
499 | dp = page_address(page); | |
6e16818b | 500 | for (ent = lu_dirent_start(dp); ent && !done; |
d7e09d03 PT |
501 | ent = lu_dirent_next(ent)) { |
502 | __u16 type; | |
503 | int namelen; | |
504 | struct lu_fid fid; | |
505 | __u64 lhash; | |
506 | __u64 ino; | |
507 | ||
508 | /* | |
509 | * XXX: implement correct swabbing here. | |
510 | */ | |
511 | ||
512 | hash = le64_to_cpu(ent->lde_hash); | |
513 | if (hash < pos) | |
514 | /* | |
515 | * Skip until we find target hash | |
516 | * value. | |
517 | */ | |
518 | continue; | |
519 | ||
520 | namelen = le16_to_cpu(ent->lde_namelen); | |
521 | if (namelen == 0) | |
522 | /* | |
523 | * Skip dummy record. | |
524 | */ | |
525 | continue; | |
526 | ||
527 | if (api32 && hash64) | |
528 | lhash = hash >> 32; | |
529 | else | |
530 | lhash = hash; | |
531 | fid_le_to_cpu(&fid, &ent->lde_fid); | |
532 | ino = cl_fid_build_ino(&fid, api32); | |
533 | type = ll_dirent_type_get(ent); | |
0b09d381 | 534 | ctx->pos = lhash; |
d7e09d03 PT |
535 | /* For 'll_nfs_get_name_filldir()', it will try |
536 | * to access the 'ent' through its 'lde_name', | |
0b09d381 PT |
537 | * so the parameter 'name' for 'ctx->actor()' |
538 | * must be part of the 'ent'. | |
539 | */ | |
540 | done = !dir_emit(ctx, ent->lde_name, | |
541 | namelen, ino, type); | |
d7e09d03 PT |
542 | } |
543 | next = le64_to_cpu(dp->ldp_hash_end); | |
544 | if (!done) { | |
545 | pos = next; | |
546 | if (pos == MDS_DIR_END_OFF) { | |
547 | /* | |
548 | * End of directory reached. | |
549 | */ | |
550 | done = 1; | |
551 | ll_release_page(page, 0); | |
552 | } else if (1 /* chain is exhausted*/) { | |
553 | /* | |
554 | * Normal case: continue to the next | |
555 | * page. | |
556 | */ | |
557 | ll_release_page(page, | |
558 | le32_to_cpu(dp->ldp_flags) & | |
559 | LDF_COLLIDE); | |
560 | next = pos; | |
561 | page = ll_get_dir_page(inode, pos, | |
562 | &chain); | |
563 | } else { | |
564 | /* | |
565 | * go into overflow page. | |
566 | */ | |
567 | LASSERT(le32_to_cpu(dp->ldp_flags) & | |
568 | LDF_COLLIDE); | |
569 | ll_release_page(page, 1); | |
570 | } | |
571 | } else { | |
572 | pos = hash; | |
573 | ll_release_page(page, 0); | |
574 | } | |
575 | } else { | |
576 | rc = PTR_ERR(page); | |
577 | CERROR("error reading dir "DFID" at %lu: rc %d\n", | |
578 | PFID(&info->lli_fid), (unsigned long)pos, rc); | |
579 | } | |
580 | } | |
581 | ||
0b09d381 | 582 | ctx->pos = pos; |
d7e09d03 | 583 | ll_dir_chain_fini(&chain); |
0a3bdb00 | 584 | return rc; |
d7e09d03 PT |
585 | } |
586 | ||
0b09d381 | 587 | static int ll_readdir(struct file *filp, struct dir_context *ctx) |
d7e09d03 | 588 | { |
2a8a3597 | 589 | struct inode *inode = file_inode(filp); |
d7e09d03 PT |
590 | struct ll_file_data *lfd = LUSTRE_FPRIVATE(filp); |
591 | struct ll_sb_info *sbi = ll_i2sbi(inode); | |
d7e09d03 PT |
592 | int hash64 = sbi->ll_flags & LL_SBI_64BIT_HASH; |
593 | int api32 = ll_need_32bit_api(sbi); | |
594 | int rc; | |
d7e09d03 | 595 | |
2d00bd17 JP |
596 | CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p) pos %lu/%llu 32bit_api %d\n", |
597 | inode->i_ino, inode->i_generation, | |
0b09d381 | 598 | inode, (unsigned long)lfd->lfd_pos, i_size_read(inode), api32); |
d7e09d03 | 599 | |
34e1f2bb | 600 | if (lfd->lfd_pos == MDS_DIR_END_OFF) { |
d7e09d03 PT |
601 | /* |
602 | * end-of-file. | |
603 | */ | |
34e1f2bb JL |
604 | rc = 0; |
605 | goto out; | |
606 | } | |
d7e09d03 | 607 | |
0b09d381 PT |
608 | ctx->pos = lfd->lfd_pos; |
609 | rc = ll_dir_read(inode, ctx); | |
610 | lfd->lfd_pos = ctx->pos; | |
611 | if (ctx->pos == MDS_DIR_END_OFF) { | |
d7e09d03 | 612 | if (api32) |
0b09d381 | 613 | ctx->pos = LL_DIR_END_OFF_32BIT; |
d7e09d03 | 614 | else |
0b09d381 | 615 | ctx->pos = LL_DIR_END_OFF; |
d7e09d03 PT |
616 | } else { |
617 | if (api32 && hash64) | |
0b09d381 | 618 | ctx->pos >>= 32; |
d7e09d03 PT |
619 | } |
620 | filp->f_version = inode->i_version; | |
d7e09d03 PT |
621 | |
622 | out: | |
623 | if (!rc) | |
624 | ll_stats_ops_tally(sbi, LPROC_LL_READDIR, 1); | |
625 | ||
0a3bdb00 | 626 | return rc; |
d7e09d03 PT |
627 | } |
628 | ||
2d95f10e | 629 | static int ll_send_mgc_param(struct obd_export *mgc, char *string) |
d7e09d03 PT |
630 | { |
631 | struct mgs_send_param *msp; | |
632 | int rc = 0; | |
633 | ||
496a51bd | 634 | msp = kzalloc(sizeof(*msp), GFP_NOFS); |
d7e09d03 PT |
635 | if (!msp) |
636 | return -ENOMEM; | |
637 | ||
9563fe8a | 638 | strlcpy(msp->mgs_param, string, sizeof(msp->mgs_param)); |
d7e09d03 PT |
639 | rc = obd_set_info_async(NULL, mgc, sizeof(KEY_SET_INFO), KEY_SET_INFO, |
640 | sizeof(struct mgs_send_param), msp, NULL); | |
641 | if (rc) | |
642 | CERROR("Failed to set parameter: %d\n", rc); | |
97903a26 | 643 | kfree(msp); |
d7e09d03 PT |
644 | |
645 | return rc; | |
646 | } | |
647 | ||
920b4f2e LC |
648 | static int ll_dir_setdirstripe(struct inode *dir, struct lmv_user_md *lump, |
649 | char *filename) | |
d7e09d03 PT |
650 | { |
651 | struct ptlrpc_request *request = NULL; | |
652 | struct md_op_data *op_data; | |
653 | struct ll_sb_info *sbi = ll_i2sbi(dir); | |
654 | int mode; | |
655 | int err; | |
656 | ||
1f6eaf83 | 657 | mode = (~current_umask() & 0755) | S_IFDIR; |
d7e09d03 PT |
658 | op_data = ll_prep_md_op_data(NULL, dir, NULL, filename, |
659 | strlen(filename), mode, LUSTRE_OPC_MKDIR, | |
660 | lump); | |
34e1f2bb JL |
661 | if (IS_ERR(op_data)) { |
662 | err = PTR_ERR(op_data); | |
663 | goto err_exit; | |
664 | } | |
d7e09d03 PT |
665 | |
666 | op_data->op_cli_flags |= CLI_SET_MEA; | |
667 | err = md_create(sbi->ll_md_exp, op_data, lump, sizeof(*lump), mode, | |
4b1a25f0 PT |
668 | from_kuid(&init_user_ns, current_fsuid()), |
669 | from_kgid(&init_user_ns, current_fsgid()), | |
d7e09d03 PT |
670 | cfs_curproc_cap_pack(), 0, &request); |
671 | ll_finish_md_op_data(op_data); | |
672 | if (err) | |
34e1f2bb | 673 | goto err_exit; |
d7e09d03 PT |
674 | err_exit: |
675 | ptlrpc_req_finished(request); | |
676 | return err; | |
677 | } | |
678 | ||
679 | int ll_dir_setstripe(struct inode *inode, struct lov_user_md *lump, | |
680 | int set_default) | |
681 | { | |
682 | struct ll_sb_info *sbi = ll_i2sbi(inode); | |
683 | struct md_op_data *op_data; | |
684 | struct ptlrpc_request *req = NULL; | |
685 | int rc = 0; | |
686 | struct lustre_sb_info *lsi = s2lsi(inode->i_sb); | |
687 | struct obd_device *mgc = lsi->lsi_mgc; | |
688 | int lum_size; | |
d7e09d03 | 689 | |
6e16818b | 690 | if (lump) { |
d7e09d03 PT |
691 | /* |
692 | * This is coming from userspace, so should be in | |
693 | * local endian. But the MDS would like it in little | |
694 | * endian, so we swab it before we send it. | |
695 | */ | |
696 | switch (lump->lmm_magic) { | |
697 | case LOV_USER_MAGIC_V1: { | |
698 | if (lump->lmm_magic != cpu_to_le32(LOV_USER_MAGIC_V1)) | |
699 | lustre_swab_lov_user_md_v1(lump); | |
700 | lum_size = sizeof(struct lov_user_md_v1); | |
701 | break; | |
702 | } | |
703 | case LOV_USER_MAGIC_V3: { | |
704 | if (lump->lmm_magic != cpu_to_le32(LOV_USER_MAGIC_V3)) | |
705 | lustre_swab_lov_user_md_v3( | |
706 | (struct lov_user_md_v3 *)lump); | |
707 | lum_size = sizeof(struct lov_user_md_v3); | |
708 | break; | |
709 | } | |
710 | default: { | |
2d00bd17 JP |
711 | CDEBUG(D_IOCTL, "bad userland LOV MAGIC: %#08x != %#08x nor %#08x\n", |
712 | lump->lmm_magic, LOV_USER_MAGIC_V1, | |
713 | LOV_USER_MAGIC_V3); | |
0a3bdb00 | 714 | return -EINVAL; |
d7e09d03 PT |
715 | } |
716 | } | |
717 | } else { | |
718 | lum_size = sizeof(struct lov_user_md_v1); | |
719 | } | |
720 | ||
721 | op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0, | |
722 | LUSTRE_OPC_ANY, NULL); | |
723 | if (IS_ERR(op_data)) | |
0a3bdb00 | 724 | return PTR_ERR(op_data); |
d7e09d03 | 725 | |
6e16818b | 726 | if (lump && lump->lmm_magic == cpu_to_le32(LMV_USER_MAGIC)) |
d7e09d03 PT |
727 | op_data->op_cli_flags |= CLI_SET_MEA; |
728 | ||
729 | /* swabbing is done in lov_setstripe() on server side */ | |
730 | rc = md_setattr(sbi->ll_md_exp, op_data, lump, lum_size, | |
731 | NULL, 0, &req, NULL); | |
732 | ll_finish_md_op_data(op_data); | |
733 | ptlrpc_req_finished(req); | |
734 | if (rc) { | |
735 | if (rc != -EPERM && rc != -EACCES) | |
736 | CERROR("mdc_setattr fails: rc = %d\n", rc); | |
737 | } | |
738 | ||
739 | /* In the following we use the fact that LOV_USER_MAGIC_V1 and | |
c0894c6c OD |
740 | * LOV_USER_MAGIC_V3 have the same initial fields so we do not |
741 | * need to make the distinction between the 2 versions | |
742 | */ | |
d7e09d03 PT |
743 | if (set_default && mgc->u.cli.cl_mgc_mgsexp) { |
744 | char *param = NULL; | |
745 | char *buf; | |
746 | ||
496a51bd | 747 | param = kzalloc(MGS_PARAM_MAXLEN, GFP_NOFS); |
57876fd8 JL |
748 | if (!param) |
749 | return -ENOMEM; | |
d7e09d03 PT |
750 | |
751 | buf = param; | |
752 | /* Get fsname and assume devname to be -MDT0000. */ | |
753 | ll_get_fsname(inode->i_sb, buf, MTI_NAME_MAXLEN); | |
754 | strcat(buf, "-MDT0000.lov"); | |
755 | buf += strlen(buf); | |
756 | ||
757 | /* Set root stripesize */ | |
758 | sprintf(buf, ".stripesize=%u", | |
759 | lump ? le32_to_cpu(lump->lmm_stripe_size) : 0); | |
760 | rc = ll_send_mgc_param(mgc->u.cli.cl_mgc_mgsexp, param); | |
761 | if (rc) | |
34e1f2bb | 762 | goto end; |
d7e09d03 PT |
763 | |
764 | /* Set root stripecount */ | |
765 | sprintf(buf, ".stripecount=%hd", | |
766 | lump ? le16_to_cpu(lump->lmm_stripe_count) : 0); | |
767 | rc = ll_send_mgc_param(mgc->u.cli.cl_mgc_mgsexp, param); | |
768 | if (rc) | |
34e1f2bb | 769 | goto end; |
d7e09d03 PT |
770 | |
771 | /* Set root stripeoffset */ | |
772 | sprintf(buf, ".stripeoffset=%hd", | |
773 | lump ? le16_to_cpu(lump->lmm_stripe_offset) : | |
774 | (typeof(lump->lmm_stripe_offset))(-1)); | |
775 | rc = ll_send_mgc_param(mgc->u.cli.cl_mgc_mgsexp, param); | |
776 | ||
777 | end: | |
57876fd8 | 778 | kfree(param); |
d7e09d03 | 779 | } |
0a3bdb00 | 780 | return rc; |
d7e09d03 PT |
781 | } |
782 | ||
783 | int ll_dir_getstripe(struct inode *inode, struct lov_mds_md **lmmp, | |
784 | int *lmm_size, struct ptlrpc_request **request) | |
785 | { | |
786 | struct ll_sb_info *sbi = ll_i2sbi(inode); | |
787 | struct mdt_body *body; | |
788 | struct lov_mds_md *lmm = NULL; | |
789 | struct ptlrpc_request *req = NULL; | |
790 | int rc, lmmsize; | |
791 | struct md_op_data *op_data; | |
792 | ||
44779340 | 793 | rc = ll_get_default_mdsize(sbi, &lmmsize); |
d7e09d03 | 794 | if (rc) |
0a3bdb00 | 795 | return rc; |
d7e09d03 PT |
796 | |
797 | op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, | |
798 | 0, lmmsize, LUSTRE_OPC_ANY, | |
799 | NULL); | |
800 | if (IS_ERR(op_data)) | |
0a3bdb00 | 801 | return PTR_ERR(op_data); |
d7e09d03 PT |
802 | |
803 | op_data->op_valid = OBD_MD_FLEASIZE | OBD_MD_FLDIREA; | |
804 | rc = md_getattr(sbi->ll_md_exp, op_data, &req); | |
805 | ll_finish_md_op_data(op_data); | |
806 | if (rc < 0) { | |
2d00bd17 JP |
807 | CDEBUG(D_INFO, "md_getattr failed on inode %lu/%u: rc %d\n", |
808 | inode->i_ino, | |
d7e09d03 | 809 | inode->i_generation, rc); |
34e1f2bb | 810 | goto out; |
d7e09d03 PT |
811 | } |
812 | ||
813 | body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY); | |
d7e09d03 PT |
814 | |
815 | lmmsize = body->eadatasize; | |
816 | ||
817 | if (!(body->valid & (OBD_MD_FLEASIZE | OBD_MD_FLDIREA)) || | |
818 | lmmsize == 0) { | |
34e1f2bb JL |
819 | rc = -ENODATA; |
820 | goto out; | |
d7e09d03 PT |
821 | } |
822 | ||
823 | lmm = req_capsule_server_sized_get(&req->rq_pill, | |
824 | &RMF_MDT_MD, lmmsize); | |
d7e09d03 PT |
825 | |
826 | /* | |
827 | * This is coming from the MDS, so is probably in | |
828 | * little endian. We convert it to host endian before | |
829 | * passing it to userspace. | |
830 | */ | |
831 | /* We don't swab objects for directories */ | |
832 | switch (le32_to_cpu(lmm->lmm_magic)) { | |
833 | case LOV_MAGIC_V1: | |
1f6eaf83 | 834 | if (cpu_to_le32(LOV_MAGIC) != LOV_MAGIC) |
d7e09d03 PT |
835 | lustre_swab_lov_user_md_v1((struct lov_user_md_v1 *)lmm); |
836 | break; | |
837 | case LOV_MAGIC_V3: | |
1f6eaf83 | 838 | if (cpu_to_le32(LOV_MAGIC) != LOV_MAGIC) |
d7e09d03 PT |
839 | lustre_swab_lov_user_md_v3((struct lov_user_md_v3 *)lmm); |
840 | break; | |
841 | default: | |
842 | CERROR("unknown magic: %lX\n", (unsigned long)lmm->lmm_magic); | |
843 | rc = -EPROTO; | |
844 | } | |
845 | out: | |
846 | *lmmp = lmm; | |
847 | *lmm_size = lmmsize; | |
848 | *request = req; | |
849 | return rc; | |
850 | } | |
851 | ||
852 | /* | |
853 | * Get MDT index for the inode. | |
854 | */ | |
855 | int ll_get_mdt_idx(struct inode *inode) | |
856 | { | |
857 | struct ll_sb_info *sbi = ll_i2sbi(inode); | |
858 | struct md_op_data *op_data; | |
859 | int rc, mdtidx; | |
d7e09d03 PT |
860 | |
861 | op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, | |
862 | 0, LUSTRE_OPC_ANY, NULL); | |
863 | if (IS_ERR(op_data)) | |
0a3bdb00 | 864 | return PTR_ERR(op_data); |
d7e09d03 PT |
865 | |
866 | op_data->op_flags |= MF_GET_MDT_IDX; | |
867 | rc = md_getattr(sbi->ll_md_exp, op_data, NULL); | |
868 | mdtidx = op_data->op_mds; | |
869 | ll_finish_md_op_data(op_data); | |
870 | if (rc < 0) { | |
871 | CDEBUG(D_INFO, "md_getattr_name: %d\n", rc); | |
0a3bdb00 | 872 | return rc; |
d7e09d03 PT |
873 | } |
874 | return mdtidx; | |
875 | } | |
876 | ||
877 | /** | |
878 | * Generic handler to do any pre-copy work. | |
879 | * | |
9c379663 | 880 | * It sends a first hsm_progress (with extent length == 0) to coordinator as a |
d7e09d03 PT |
881 | * first information for it that real work has started. |
882 | * | |
883 | * Moreover, for a ARCHIVE request, it will sample the file data version and | |
884 | * store it in \a copy. | |
885 | * | |
886 | * \return 0 on success. | |
887 | */ | |
888 | static int ll_ioc_copy_start(struct super_block *sb, struct hsm_copy *copy) | |
889 | { | |
890 | struct ll_sb_info *sbi = ll_s2sbi(sb); | |
891 | struct hsm_progress_kernel hpk; | |
892 | int rc; | |
d7e09d03 PT |
893 | |
894 | /* Forge a hsm_progress based on data from copy. */ | |
895 | hpk.hpk_fid = copy->hc_hai.hai_fid; | |
896 | hpk.hpk_cookie = copy->hc_hai.hai_cookie; | |
897 | hpk.hpk_extent.offset = copy->hc_hai.hai_extent.offset; | |
898 | hpk.hpk_extent.length = 0; | |
899 | hpk.hpk_flags = 0; | |
900 | hpk.hpk_errval = 0; | |
901 | hpk.hpk_data_version = 0; | |
902 | ||
d7e09d03 PT |
903 | /* For archive request, we need to read the current file version. */ |
904 | if (copy->hc_hai.hai_action == HSMA_ARCHIVE) { | |
905 | struct inode *inode; | |
906 | __u64 data_version = 0; | |
907 | ||
908 | /* Get inode for this fid */ | |
909 | inode = search_inode_for_lustre(sb, ©->hc_hai.hai_fid); | |
910 | if (IS_ERR(inode)) { | |
911 | hpk.hpk_flags |= HP_FLAG_RETRY; | |
912 | /* hpk_errval is >= 0 */ | |
913 | hpk.hpk_errval = -PTR_ERR(inode); | |
34e1f2bb JL |
914 | rc = PTR_ERR(inode); |
915 | goto progress; | |
d7e09d03 PT |
916 | } |
917 | ||
918 | /* Read current file data version */ | |
919 | rc = ll_data_version(inode, &data_version, 1); | |
920 | iput(inode); | |
921 | if (rc != 0) { | |
922 | CDEBUG(D_HSM, "Could not read file data version of " | |
55f5a824 | 923 | DFID" (rc = %d). Archive request (%#llx) could not be done.\n", |
d7e09d03 PT |
924 | PFID(©->hc_hai.hai_fid), rc, |
925 | copy->hc_hai.hai_cookie); | |
926 | hpk.hpk_flags |= HP_FLAG_RETRY; | |
927 | /* hpk_errval must be >= 0 */ | |
928 | hpk.hpk_errval = -rc; | |
34e1f2bb | 929 | goto progress; |
d7e09d03 PT |
930 | } |
931 | ||
9c379663 | 932 | /* Store in the hsm_copy for later copytool use. |
c0894c6c OD |
933 | * Always modified even if no lsm. |
934 | */ | |
d7e09d03 PT |
935 | copy->hc_data_version = data_version; |
936 | } | |
937 | ||
938 | progress: | |
939 | rc = obd_iocontrol(LL_IOC_HSM_PROGRESS, sbi->ll_md_exp, sizeof(hpk), | |
940 | &hpk, NULL); | |
941 | ||
0a3bdb00 | 942 | return rc; |
d7e09d03 PT |
943 | } |
944 | ||
945 | /** | |
946 | * Generic handler to do any post-copy work. | |
947 | * | |
948 | * It will send the last hsm_progress update to coordinator to inform it | |
949 | * that copy is finished and whether it was successful or not. | |
950 | * | |
951 | * Moreover, | |
952 | * - for ARCHIVE request, it will sample the file data version and compare it | |
953 | * with the version saved in ll_ioc_copy_start(). If they do not match, copy | |
954 | * will be considered as failed. | |
955 | * - for RESTORE request, it will sample the file data version and send it to | |
956 | * coordinator which is useful if the file was imported as 'released'. | |
957 | * | |
958 | * \return 0 on success. | |
959 | */ | |
960 | static int ll_ioc_copy_end(struct super_block *sb, struct hsm_copy *copy) | |
961 | { | |
962 | struct ll_sb_info *sbi = ll_s2sbi(sb); | |
963 | struct hsm_progress_kernel hpk; | |
964 | int rc; | |
d7e09d03 PT |
965 | |
966 | /* If you modify the logic here, also check llapi_hsm_copy_end(). */ | |
967 | /* Take care: copy->hc_hai.hai_action, len, gid and data are not | |
968 | * initialized if copy_end was called with copy == NULL. | |
969 | */ | |
970 | ||
971 | /* Forge a hsm_progress based on data from copy. */ | |
972 | hpk.hpk_fid = copy->hc_hai.hai_fid; | |
973 | hpk.hpk_cookie = copy->hc_hai.hai_cookie; | |
974 | hpk.hpk_extent = copy->hc_hai.hai_extent; | |
975 | hpk.hpk_flags = copy->hc_flags | HP_FLAG_COMPLETED; | |
976 | hpk.hpk_errval = copy->hc_errval; | |
977 | hpk.hpk_data_version = 0; | |
978 | ||
979 | /* For archive request, we need to check the file data was not changed. | |
980 | * | |
981 | * For restore request, we need to send the file data version, this is | |
982 | * useful when the file was created using hsm_import. | |
983 | */ | |
984 | if (((copy->hc_hai.hai_action == HSMA_ARCHIVE) || | |
985 | (copy->hc_hai.hai_action == HSMA_RESTORE)) && | |
986 | (copy->hc_errval == 0)) { | |
987 | struct inode *inode; | |
988 | __u64 data_version = 0; | |
989 | ||
990 | /* Get lsm for this fid */ | |
991 | inode = search_inode_for_lustre(sb, ©->hc_hai.hai_fid); | |
992 | if (IS_ERR(inode)) { | |
993 | hpk.hpk_flags |= HP_FLAG_RETRY; | |
994 | /* hpk_errval must be >= 0 */ | |
995 | hpk.hpk_errval = -PTR_ERR(inode); | |
34e1f2bb JL |
996 | rc = PTR_ERR(inode); |
997 | goto progress; | |
d7e09d03 PT |
998 | } |
999 | ||
1000 | rc = ll_data_version(inode, &data_version, | |
1001 | copy->hc_hai.hai_action == HSMA_ARCHIVE); | |
1002 | iput(inode); | |
1003 | if (rc) { | |
2d00bd17 | 1004 | CDEBUG(D_HSM, "Could not read file data version. Request could not be confirmed.\n"); |
d7e09d03 PT |
1005 | if (hpk.hpk_errval == 0) |
1006 | hpk.hpk_errval = -rc; | |
34e1f2bb | 1007 | goto progress; |
d7e09d03 PT |
1008 | } |
1009 | ||
9c379663 | 1010 | /* Store in the hsm_copy for later copytool use. |
c0894c6c OD |
1011 | * Always modified even if no lsm. |
1012 | */ | |
d7e09d03 PT |
1013 | hpk.hpk_data_version = data_version; |
1014 | ||
1015 | /* File could have been stripped during archiving, so we need | |
c0894c6c OD |
1016 | * to check anyway. |
1017 | */ | |
d7e09d03 PT |
1018 | if ((copy->hc_hai.hai_action == HSMA_ARCHIVE) && |
1019 | (copy->hc_data_version != data_version)) { | |
2d00bd17 | 1020 | CDEBUG(D_HSM, "File data version mismatched. File content was changed during archiving. " |
55f5a824 | 1021 | DFID", start:%#llx current:%#llx\n", |
d7e09d03 PT |
1022 | PFID(©->hc_hai.hai_fid), |
1023 | copy->hc_data_version, data_version); | |
1024 | /* File was changed, send error to cdt. Do not ask for | |
1025 | * retry because if a file is modified frequently, | |
1026 | * the cdt will loop on retried archive requests. | |
1027 | * The policy engine will ask for a new archive later | |
1028 | * when the file will not be modified for some tunable | |
c0894c6c OD |
1029 | * time |
1030 | */ | |
d7e09d03 PT |
1031 | /* we do not notify caller */ |
1032 | hpk.hpk_flags &= ~HP_FLAG_RETRY; | |
1033 | /* hpk_errval must be >= 0 */ | |
1034 | hpk.hpk_errval = EBUSY; | |
1035 | } | |
1036 | ||
1037 | } | |
1038 | ||
1039 | progress: | |
1040 | rc = obd_iocontrol(LL_IOC_HSM_PROGRESS, sbi->ll_md_exp, sizeof(hpk), | |
1041 | &hpk, NULL); | |
1042 | ||
0a3bdb00 | 1043 | return rc; |
d7e09d03 PT |
1044 | } |
1045 | ||
b0337d6c JH |
1046 | static int copy_and_ioctl(int cmd, struct obd_export *exp, |
1047 | const void __user *data, size_t size) | |
d7e09d03 | 1048 | { |
b0337d6c | 1049 | void *copy; |
d7e09d03 PT |
1050 | int rc; |
1051 | ||
496a51bd JL |
1052 | copy = kzalloc(size, GFP_NOFS); |
1053 | if (!copy) | |
d7e09d03 | 1054 | return -ENOMEM; |
b0337d6c JH |
1055 | |
1056 | if (copy_from_user(copy, data, size)) { | |
1057 | rc = -EFAULT; | |
1058 | goto out; | |
d7e09d03 | 1059 | } |
b0337d6c JH |
1060 | |
1061 | rc = obd_iocontrol(cmd, exp, size, copy, NULL); | |
1062 | out: | |
97903a26 | 1063 | kfree(copy); |
b0337d6c | 1064 | |
d7e09d03 PT |
1065 | return rc; |
1066 | } | |
1067 | ||
1068 | static int quotactl_ioctl(struct ll_sb_info *sbi, struct if_quotactl *qctl) | |
1069 | { | |
1070 | int cmd = qctl->qc_cmd; | |
1071 | int type = qctl->qc_type; | |
1072 | int id = qctl->qc_id; | |
1073 | int valid = qctl->qc_valid; | |
1074 | int rc = 0; | |
d7e09d03 PT |
1075 | |
1076 | switch (cmd) { | |
1077 | case LUSTRE_Q_INVALIDATE: | |
1078 | case LUSTRE_Q_FINVALIDATE: | |
1079 | case Q_QUOTAON: | |
1080 | case Q_QUOTAOFF: | |
1081 | case Q_SETQUOTA: | |
1082 | case Q_SETINFO: | |
2eb90a75 | 1083 | if (!capable(CFS_CAP_SYS_ADMIN) || |
d7e09d03 | 1084 | sbi->ll_flags & LL_SBI_RMT_CLIENT) |
0a3bdb00 | 1085 | return -EPERM; |
d7e09d03 PT |
1086 | break; |
1087 | case Q_GETQUOTA: | |
4b1a25f0 | 1088 | if (((type == USRQUOTA && |
8b9e418c | 1089 | !uid_eq(current_euid(), make_kuid(&init_user_ns, id))) || |
4b1a25f0 PT |
1090 | (type == GRPQUOTA && |
1091 | !in_egroup_p(make_kgid(&init_user_ns, id)))) && | |
2eb90a75 | 1092 | (!capable(CFS_CAP_SYS_ADMIN) || |
d7e09d03 | 1093 | sbi->ll_flags & LL_SBI_RMT_CLIENT)) |
0a3bdb00 | 1094 | return -EPERM; |
d7e09d03 PT |
1095 | break; |
1096 | case Q_GETINFO: | |
1097 | break; | |
1098 | default: | |
1099 | CERROR("unsupported quotactl op: %#x\n", cmd); | |
0a3bdb00 | 1100 | return -ENOTTY; |
d7e09d03 PT |
1101 | } |
1102 | ||
1103 | if (valid != QC_GENERAL) { | |
1104 | if (sbi->ll_flags & LL_SBI_RMT_CLIENT) | |
0a3bdb00 | 1105 | return -EOPNOTSUPP; |
d7e09d03 PT |
1106 | |
1107 | if (cmd == Q_GETINFO) | |
1108 | qctl->qc_cmd = Q_GETOINFO; | |
1109 | else if (cmd == Q_GETQUOTA) | |
1110 | qctl->qc_cmd = Q_GETOQUOTA; | |
1111 | else | |
0a3bdb00 | 1112 | return -EINVAL; |
d7e09d03 PT |
1113 | |
1114 | switch (valid) { | |
1115 | case QC_MDTIDX: | |
1116 | rc = obd_iocontrol(OBD_IOC_QUOTACTL, sbi->ll_md_exp, | |
1117 | sizeof(*qctl), qctl, NULL); | |
1118 | break; | |
1119 | case QC_OSTIDX: | |
1120 | rc = obd_iocontrol(OBD_IOC_QUOTACTL, sbi->ll_dt_exp, | |
1121 | sizeof(*qctl), qctl, NULL); | |
1122 | break; | |
1123 | case QC_UUID: | |
1124 | rc = obd_iocontrol(OBD_IOC_QUOTACTL, sbi->ll_md_exp, | |
1125 | sizeof(*qctl), qctl, NULL); | |
1126 | if (rc == -EAGAIN) | |
1127 | rc = obd_iocontrol(OBD_IOC_QUOTACTL, | |
1128 | sbi->ll_dt_exp, | |
1129 | sizeof(*qctl), qctl, NULL); | |
1130 | break; | |
1131 | default: | |
1132 | rc = -EINVAL; | |
1133 | break; | |
1134 | } | |
1135 | ||
1136 | if (rc) | |
0a3bdb00 | 1137 | return rc; |
d7e09d03 PT |
1138 | |
1139 | qctl->qc_cmd = cmd; | |
1140 | } else { | |
1141 | struct obd_quotactl *oqctl; | |
1142 | ||
496a51bd JL |
1143 | oqctl = kzalloc(sizeof(*oqctl), GFP_NOFS); |
1144 | if (!oqctl) | |
0a3bdb00 | 1145 | return -ENOMEM; |
d7e09d03 PT |
1146 | |
1147 | QCTL_COPY(oqctl, qctl); | |
1148 | rc = obd_quotactl(sbi->ll_md_exp, oqctl); | |
1149 | if (rc) { | |
1150 | if (rc != -EALREADY && cmd == Q_QUOTAON) { | |
1151 | oqctl->qc_cmd = Q_QUOTAOFF; | |
1152 | obd_quotactl(sbi->ll_md_exp, oqctl); | |
1153 | } | |
97903a26 | 1154 | kfree(oqctl); |
0a3bdb00 | 1155 | return rc; |
d7e09d03 PT |
1156 | } |
1157 | /* If QIF_SPACE is not set, client should collect the | |
c0894c6c OD |
1158 | * space usage from OSSs by itself |
1159 | */ | |
d7e09d03 PT |
1160 | if (cmd == Q_GETQUOTA && |
1161 | !(oqctl->qc_dqblk.dqb_valid & QIF_SPACE) && | |
1162 | !oqctl->qc_dqblk.dqb_curspace) { | |
1163 | struct obd_quotactl *oqctl_tmp; | |
1164 | ||
496a51bd JL |
1165 | oqctl_tmp = kzalloc(sizeof(*oqctl_tmp), GFP_NOFS); |
1166 | if (!oqctl_tmp) { | |
34e1f2bb JL |
1167 | rc = -ENOMEM; |
1168 | goto out; | |
1169 | } | |
d7e09d03 PT |
1170 | |
1171 | oqctl_tmp->qc_cmd = Q_GETOQUOTA; | |
1172 | oqctl_tmp->qc_id = oqctl->qc_id; | |
1173 | oqctl_tmp->qc_type = oqctl->qc_type; | |
1174 | ||
1175 | /* collect space usage from OSTs */ | |
1176 | oqctl_tmp->qc_dqblk.dqb_curspace = 0; | |
1177 | rc = obd_quotactl(sbi->ll_dt_exp, oqctl_tmp); | |
1178 | if (!rc || rc == -EREMOTEIO) { | |
1179 | oqctl->qc_dqblk.dqb_curspace = | |
1180 | oqctl_tmp->qc_dqblk.dqb_curspace; | |
1181 | oqctl->qc_dqblk.dqb_valid |= QIF_SPACE; | |
1182 | } | |
1183 | ||
1184 | /* collect space & inode usage from MDTs */ | |
1185 | oqctl_tmp->qc_dqblk.dqb_curspace = 0; | |
1186 | oqctl_tmp->qc_dqblk.dqb_curinodes = 0; | |
1187 | rc = obd_quotactl(sbi->ll_md_exp, oqctl_tmp); | |
1188 | if (!rc || rc == -EREMOTEIO) { | |
1189 | oqctl->qc_dqblk.dqb_curspace += | |
1190 | oqctl_tmp->qc_dqblk.dqb_curspace; | |
1191 | oqctl->qc_dqblk.dqb_curinodes = | |
1192 | oqctl_tmp->qc_dqblk.dqb_curinodes; | |
1193 | oqctl->qc_dqblk.dqb_valid |= QIF_INODES; | |
1194 | } else { | |
1195 | oqctl->qc_dqblk.dqb_valid &= ~QIF_SPACE; | |
1196 | } | |
1197 | ||
97903a26 | 1198 | kfree(oqctl_tmp); |
d7e09d03 PT |
1199 | } |
1200 | out: | |
1201 | QCTL_COPY(qctl, oqctl); | |
97903a26 | 1202 | kfree(oqctl); |
d7e09d03 PT |
1203 | } |
1204 | ||
0a3bdb00 | 1205 | return rc; |
d7e09d03 PT |
1206 | } |
1207 | ||
a7503434 OD |
1208 | /* This function tries to get a single name component, |
1209 | * to send to the server. No actual path traversal involved, | |
c0894c6c OD |
1210 | * so we limit to NAME_MAX |
1211 | */ | |
a7503434 | 1212 | static char *ll_getname(const char __user *filename) |
d7e09d03 PT |
1213 | { |
1214 | int ret = 0, len; | |
a7503434 | 1215 | char *tmp; |
d7e09d03 | 1216 | |
a7503434 | 1217 | tmp = kzalloc(NAME_MAX + 1, GFP_KERNEL); |
d7e09d03 PT |
1218 | if (!tmp) |
1219 | return ERR_PTR(-ENOMEM); | |
1220 | ||
a7503434 OD |
1221 | len = strncpy_from_user(tmp, filename, NAME_MAX + 1); |
1222 | if (len < 0) | |
1223 | ret = len; | |
1224 | else if (len == 0) | |
d7e09d03 | 1225 | ret = -ENOENT; |
a7503434 | 1226 | else if (len > NAME_MAX && tmp[NAME_MAX] != 0) |
d7e09d03 PT |
1227 | ret = -ENAMETOOLONG; |
1228 | ||
1229 | if (ret) { | |
a7503434 | 1230 | kfree(tmp); |
d7e09d03 PT |
1231 | tmp = ERR_PTR(ret); |
1232 | } | |
1233 | return tmp; | |
1234 | } | |
1235 | ||
a7503434 | 1236 | #define ll_putname(filename) kfree(filename) |
d7e09d03 PT |
1237 | |
1238 | static long ll_dir_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1239 | { | |
2a8a3597 | 1240 | struct inode *inode = file_inode(file); |
d7e09d03 PT |
1241 | struct ll_sb_info *sbi = ll_i2sbi(inode); |
1242 | struct obd_ioctl_data *data; | |
1243 | int rc = 0; | |
d7e09d03 PT |
1244 | |
1245 | CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), cmd=%#x\n", | |
1246 | inode->i_ino, inode->i_generation, inode, cmd); | |
1247 | ||
1248 | /* asm-ppc{,64} declares TCGETS, et. al. as type 't' not 'T' */ | |
1249 | if (_IOC_TYPE(cmd) == 'T' || _IOC_TYPE(cmd) == 't') /* tty ioctls */ | |
1250 | return -ENOTTY; | |
1251 | ||
1252 | ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_IOCTL, 1); | |
a58a38ac | 1253 | switch (cmd) { |
d7e09d03 PT |
1254 | case FSFILT_IOC_GETFLAGS: |
1255 | case FSFILT_IOC_SETFLAGS: | |
0a3bdb00 | 1256 | return ll_iocontrol(inode, file, cmd, arg); |
d7e09d03 PT |
1257 | case FSFILT_IOC_GETVERSION_OLD: |
1258 | case FSFILT_IOC_GETVERSION: | |
af00f6c5 | 1259 | return put_user(inode->i_generation, (int __user *)arg); |
d7e09d03 PT |
1260 | /* We need to special case any other ioctls we want to handle, |
1261 | * to send them to the MDS/OST as appropriate and to properly | |
1262 | * network encode the arg field. | |
1263 | case FSFILT_IOC_SETVERSION_OLD: | |
1264 | case FSFILT_IOC_SETVERSION: | |
1265 | */ | |
1266 | case LL_IOC_GET_MDTIDX: { | |
1267 | int mdtidx; | |
1268 | ||
1269 | mdtidx = ll_get_mdt_idx(inode); | |
1270 | if (mdtidx < 0) | |
0a3bdb00 | 1271 | return mdtidx; |
d7e09d03 | 1272 | |
af00f6c5 | 1273 | if (put_user((int)mdtidx, (int __user *)arg)) |
0a3bdb00 | 1274 | return -EFAULT; |
d7e09d03 PT |
1275 | |
1276 | return 0; | |
1277 | } | |
1278 | case IOC_MDC_LOOKUP: { | |
1279 | struct ptlrpc_request *request = NULL; | |
1280 | int namelen, len = 0; | |
1281 | char *buf = NULL; | |
1282 | char *filename; | |
1283 | struct md_op_data *op_data; | |
1284 | ||
e3e8ff41 | 1285 | rc = obd_ioctl_getdata(&buf, &len, (void __user *)arg); |
d7e09d03 | 1286 | if (rc) |
0a3bdb00 | 1287 | return rc; |
d7e09d03 PT |
1288 | data = (void *)buf; |
1289 | ||
1290 | filename = data->ioc_inlbuf1; | |
1291 | namelen = strlen(filename); | |
1292 | ||
1293 | if (namelen < 1) { | |
1294 | CDEBUG(D_INFO, "IOC_MDC_LOOKUP missing filename\n"); | |
34e1f2bb JL |
1295 | rc = -EINVAL; |
1296 | goto out_free; | |
d7e09d03 PT |
1297 | } |
1298 | ||
1299 | op_data = ll_prep_md_op_data(NULL, inode, NULL, filename, namelen, | |
1300 | 0, LUSTRE_OPC_ANY, NULL); | |
34e1f2bb JL |
1301 | if (IS_ERR(op_data)) { |
1302 | rc = PTR_ERR(op_data); | |
1303 | goto out_free; | |
1304 | } | |
d7e09d03 PT |
1305 | |
1306 | op_data->op_valid = OBD_MD_FLID; | |
1307 | rc = md_getattr_name(sbi->ll_md_exp, op_data, &request); | |
1308 | ll_finish_md_op_data(op_data); | |
1309 | if (rc < 0) { | |
1310 | CDEBUG(D_INFO, "md_getattr_name: %d\n", rc); | |
34e1f2bb | 1311 | goto out_free; |
d7e09d03 PT |
1312 | } |
1313 | ptlrpc_req_finished(request); | |
d7e09d03 PT |
1314 | out_free: |
1315 | obd_ioctl_freedata(buf, len); | |
1316 | return rc; | |
1317 | } | |
1318 | case LL_IOC_LMV_SETSTRIPE: { | |
1319 | struct lmv_user_md *lum; | |
1320 | char *buf = NULL; | |
1321 | char *filename; | |
1322 | int namelen = 0; | |
1323 | int lumlen = 0; | |
1324 | int len; | |
1325 | int rc; | |
1326 | ||
e3e8ff41 | 1327 | rc = obd_ioctl_getdata(&buf, &len, (void __user *)arg); |
d7e09d03 | 1328 | if (rc) |
0a3bdb00 | 1329 | return rc; |
d7e09d03 PT |
1330 | |
1331 | data = (void *)buf; | |
6e16818b | 1332 | if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 || |
34e1f2bb JL |
1333 | data->ioc_inllen1 == 0 || data->ioc_inllen2 == 0) { |
1334 | rc = -EINVAL; | |
1335 | goto lmv_out_free; | |
1336 | } | |
d7e09d03 PT |
1337 | |
1338 | filename = data->ioc_inlbuf1; | |
1339 | namelen = data->ioc_inllen1; | |
1340 | ||
1341 | if (namelen < 1) { | |
1342 | CDEBUG(D_INFO, "IOC_MDC_LOOKUP missing filename\n"); | |
34e1f2bb JL |
1343 | rc = -EINVAL; |
1344 | goto lmv_out_free; | |
d7e09d03 PT |
1345 | } |
1346 | lum = (struct lmv_user_md *)data->ioc_inlbuf2; | |
1347 | lumlen = data->ioc_inllen2; | |
1348 | ||
1349 | if (lum->lum_magic != LMV_USER_MAGIC || | |
1350 | lumlen != sizeof(*lum)) { | |
1351 | CERROR("%s: wrong lum magic %x or size %d: rc = %d\n", | |
1352 | filename, lum->lum_magic, lumlen, -EFAULT); | |
34e1f2bb JL |
1353 | rc = -EINVAL; |
1354 | goto lmv_out_free; | |
d7e09d03 PT |
1355 | } |
1356 | ||
1357 | /** | |
1358 | * ll_dir_setdirstripe will be used to set dir stripe | |
1359 | * mdc_create--->mdt_reint_create (with dirstripe) | |
1360 | */ | |
1361 | rc = ll_dir_setdirstripe(inode, lum, filename); | |
1362 | lmv_out_free: | |
1363 | obd_ioctl_freedata(buf, len); | |
0a3bdb00 | 1364 | return rc; |
d7e09d03 PT |
1365 | |
1366 | } | |
1367 | case LL_IOC_LOV_SETSTRIPE: { | |
1368 | struct lov_user_md_v3 lumv3; | |
1369 | struct lov_user_md_v1 *lumv1 = (struct lov_user_md_v1 *)&lumv3; | |
af00f6c5 OD |
1370 | struct lov_user_md_v1 __user *lumv1p = (void __user *)arg; |
1371 | struct lov_user_md_v3 __user *lumv3p = (void __user *)arg; | |
d7e09d03 PT |
1372 | |
1373 | int set_default = 0; | |
1374 | ||
1375 | LASSERT(sizeof(lumv3) == sizeof(*lumv3p)); | |
1376 | LASSERT(sizeof(lumv3.lmm_objects[0]) == | |
1377 | sizeof(lumv3p->lmm_objects[0])); | |
1378 | /* first try with v1 which is smaller than v3 */ | |
1379 | if (copy_from_user(lumv1, lumv1p, sizeof(*lumv1))) | |
0a3bdb00 | 1380 | return -EFAULT; |
d7e09d03 | 1381 | |
557732ad | 1382 | if (lumv1->lmm_magic == LOV_USER_MAGIC_V3) { |
d7e09d03 | 1383 | if (copy_from_user(&lumv3, lumv3p, sizeof(lumv3))) |
0a3bdb00 | 1384 | return -EFAULT; |
d7e09d03 PT |
1385 | } |
1386 | ||
f76c23da | 1387 | if (is_root_inode(inode)) |
d7e09d03 PT |
1388 | set_default = 1; |
1389 | ||
1390 | /* in v1 and v3 cases lumv1 points to data */ | |
1391 | rc = ll_dir_setstripe(inode, lumv1, set_default); | |
1392 | ||
0a3bdb00 | 1393 | return rc; |
d7e09d03 PT |
1394 | } |
1395 | case LL_IOC_LMV_GETSTRIPE: { | |
af00f6c5 | 1396 | struct lmv_user_md __user *lump = (void __user *)arg; |
d7e09d03 PT |
1397 | struct lmv_user_md lum; |
1398 | struct lmv_user_md *tmp; | |
1399 | int lum_size; | |
1400 | int rc = 0; | |
1401 | int mdtindex; | |
1402 | ||
1403 | if (copy_from_user(&lum, lump, sizeof(struct lmv_user_md))) | |
0a3bdb00 | 1404 | return -EFAULT; |
d7e09d03 PT |
1405 | |
1406 | if (lum.lum_magic != LMV_MAGIC_V1) | |
0a3bdb00 | 1407 | return -EINVAL; |
d7e09d03 PT |
1408 | |
1409 | lum_size = lmv_user_md_size(1, LMV_MAGIC_V1); | |
496a51bd JL |
1410 | tmp = kzalloc(lum_size, GFP_NOFS); |
1411 | if (!tmp) { | |
34e1f2bb JL |
1412 | rc = -ENOMEM; |
1413 | goto free_lmv; | |
1414 | } | |
d7e09d03 | 1415 | |
7f46528c | 1416 | *tmp = lum; |
d7e09d03 PT |
1417 | tmp->lum_type = LMV_STRIPE_TYPE; |
1418 | tmp->lum_stripe_count = 1; | |
1419 | mdtindex = ll_get_mdt_idx(inode); | |
34e1f2bb JL |
1420 | if (mdtindex < 0) { |
1421 | rc = -ENOMEM; | |
1422 | goto free_lmv; | |
1423 | } | |
d7e09d03 PT |
1424 | |
1425 | tmp->lum_stripe_offset = mdtindex; | |
1426 | tmp->lum_objects[0].lum_mds = mdtindex; | |
1427 | memcpy(&tmp->lum_objects[0].lum_fid, ll_inode2fid(inode), | |
1428 | sizeof(struct lu_fid)); | |
af00f6c5 | 1429 | if (copy_to_user((void __user *)arg, tmp, lum_size)) { |
34e1f2bb JL |
1430 | rc = -EFAULT; |
1431 | goto free_lmv; | |
1432 | } | |
d7e09d03 | 1433 | free_lmv: |
fd5e2fd0 | 1434 | kfree(tmp); |
0a3bdb00 | 1435 | return rc; |
d7e09d03 | 1436 | } |
d7e09d03 | 1437 | case LL_IOC_LOV_SWAP_LAYOUTS: |
0a3bdb00 | 1438 | return -EPERM; |
d7e09d03 | 1439 | case LL_IOC_OBD_STATFS: |
4c6243ec | 1440 | return ll_obd_statfs(inode, (void __user *)arg); |
d7e09d03 PT |
1441 | case LL_IOC_LOV_GETSTRIPE: |
1442 | case LL_IOC_MDC_GETINFO: | |
1443 | case IOC_MDC_GETFILEINFO: | |
1444 | case IOC_MDC_GETFILESTRIPE: { | |
1445 | struct ptlrpc_request *request = NULL; | |
af00f6c5 | 1446 | struct lov_user_md __user *lump; |
d7e09d03 PT |
1447 | struct lov_mds_md *lmm = NULL; |
1448 | struct mdt_body *body; | |
1449 | char *filename = NULL; | |
1450 | int lmmsize; | |
1451 | ||
1452 | if (cmd == IOC_MDC_GETFILEINFO || | |
1453 | cmd == IOC_MDC_GETFILESTRIPE) { | |
d47bb83b | 1454 | filename = ll_getname((const char __user *)arg); |
d7e09d03 | 1455 | if (IS_ERR(filename)) |
0a3bdb00 | 1456 | return PTR_ERR(filename); |
d7e09d03 PT |
1457 | |
1458 | rc = ll_lov_getstripe_ea_info(inode, filename, &lmm, | |
1459 | &lmmsize, &request); | |
1460 | } else { | |
1461 | rc = ll_dir_getstripe(inode, &lmm, &lmmsize, &request); | |
1462 | } | |
1463 | ||
1464 | if (request) { | |
1465 | body = req_capsule_server_get(&request->rq_pill, | |
1466 | &RMF_MDT_BODY); | |
6e16818b | 1467 | LASSERT(body); |
d7e09d03 | 1468 | } else { |
34e1f2bb | 1469 | goto out_req; |
d7e09d03 PT |
1470 | } |
1471 | ||
1472 | if (rc < 0) { | |
1473 | if (rc == -ENODATA && (cmd == IOC_MDC_GETFILEINFO || | |
34e1f2bb JL |
1474 | cmd == LL_IOC_MDC_GETINFO)) { |
1475 | rc = 0; | |
1476 | goto skip_lmm; | |
4d1d413a | 1477 | } else |
34e1f2bb | 1478 | goto out_req; |
d7e09d03 PT |
1479 | } |
1480 | ||
1481 | if (cmd == IOC_MDC_GETFILESTRIPE || | |
1482 | cmd == LL_IOC_LOV_GETSTRIPE) { | |
af00f6c5 | 1483 | lump = (struct lov_user_md __user *)arg; |
d7e09d03 | 1484 | } else { |
af00f6c5 | 1485 | struct lov_user_mds_data __user *lmdp; |
79792190 | 1486 | |
af00f6c5 | 1487 | lmdp = (struct lov_user_mds_data __user *)arg; |
d7e09d03 PT |
1488 | lump = &lmdp->lmd_lmm; |
1489 | } | |
1490 | if (copy_to_user(lump, lmm, lmmsize)) { | |
34e1f2bb JL |
1491 | if (copy_to_user(lump, lmm, sizeof(*lump))) { |
1492 | rc = -EFAULT; | |
1493 | goto out_req; | |
1494 | } | |
d7e09d03 PT |
1495 | rc = -EOVERFLOW; |
1496 | } | |
eb73f514 | 1497 | skip_lmm: |
d7e09d03 | 1498 | if (cmd == IOC_MDC_GETFILEINFO || cmd == LL_IOC_MDC_GETINFO) { |
af00f6c5 | 1499 | struct lov_user_mds_data __user *lmdp; |
d7e09d03 PT |
1500 | lstat_t st = { 0 }; |
1501 | ||
1502 | st.st_dev = inode->i_sb->s_dev; | |
1503 | st.st_mode = body->mode; | |
1504 | st.st_nlink = body->nlink; | |
1505 | st.st_uid = body->uid; | |
1506 | st.st_gid = body->gid; | |
1507 | st.st_rdev = body->rdev; | |
1508 | st.st_size = body->size; | |
09cbfeaf | 1509 | st.st_blksize = PAGE_SIZE; |
d7e09d03 PT |
1510 | st.st_blocks = body->blocks; |
1511 | st.st_atime = body->atime; | |
1512 | st.st_mtime = body->mtime; | |
1513 | st.st_ctime = body->ctime; | |
1514 | st.st_ino = inode->i_ino; | |
1515 | ||
af00f6c5 | 1516 | lmdp = (struct lov_user_mds_data __user *)arg; |
34e1f2bb JL |
1517 | if (copy_to_user(&lmdp->lmd_st, &st, sizeof(st))) { |
1518 | rc = -EFAULT; | |
1519 | goto out_req; | |
1520 | } | |
d7e09d03 PT |
1521 | } |
1522 | ||
eb73f514 | 1523 | out_req: |
d7e09d03 PT |
1524 | ptlrpc_req_finished(request); |
1525 | if (filename) | |
1526 | ll_putname(filename); | |
1527 | return rc; | |
1528 | } | |
1529 | case IOC_LOV_GETINFO: { | |
af00f6c5 | 1530 | struct lov_user_mds_data __user *lumd; |
d7e09d03 | 1531 | struct lov_stripe_md *lsm; |
af00f6c5 | 1532 | struct lov_user_md __user *lum; |
d7e09d03 PT |
1533 | struct lov_mds_md *lmm; |
1534 | int lmmsize; | |
1535 | lstat_t st; | |
1536 | ||
af00f6c5 | 1537 | lumd = (struct lov_user_mds_data __user *)arg; |
d7e09d03 PT |
1538 | lum = &lumd->lmd_lmm; |
1539 | ||
1540 | rc = ll_get_max_mdsize(sbi, &lmmsize); | |
1541 | if (rc) | |
0a3bdb00 | 1542 | return rc; |
d7e09d03 | 1543 | |
e958f49b | 1544 | lmm = libcfs_kvzalloc(lmmsize, GFP_NOFS); |
6e16818b | 1545 | if (!lmm) |
0a3bdb00 | 1546 | return -ENOMEM; |
34e1f2bb JL |
1547 | if (copy_from_user(lmm, lum, lmmsize)) { |
1548 | rc = -EFAULT; | |
1549 | goto free_lmm; | |
1550 | } | |
d7e09d03 PT |
1551 | |
1552 | switch (lmm->lmm_magic) { | |
1553 | case LOV_USER_MAGIC_V1: | |
1f6eaf83 | 1554 | if (cpu_to_le32(LOV_USER_MAGIC_V1) == LOV_USER_MAGIC_V1) |
d7e09d03 PT |
1555 | break; |
1556 | /* swab objects first so that stripes num will be sane */ | |
1557 | lustre_swab_lov_user_md_objects( | |
1558 | ((struct lov_user_md_v1 *)lmm)->lmm_objects, | |
1559 | ((struct lov_user_md_v1 *)lmm)->lmm_stripe_count); | |
1560 | lustre_swab_lov_user_md_v1((struct lov_user_md_v1 *)lmm); | |
1561 | break; | |
1562 | case LOV_USER_MAGIC_V3: | |
1f6eaf83 | 1563 | if (cpu_to_le32(LOV_USER_MAGIC_V3) == LOV_USER_MAGIC_V3) |
d7e09d03 PT |
1564 | break; |
1565 | /* swab objects first so that stripes num will be sane */ | |
1566 | lustre_swab_lov_user_md_objects( | |
1567 | ((struct lov_user_md_v3 *)lmm)->lmm_objects, | |
1568 | ((struct lov_user_md_v3 *)lmm)->lmm_stripe_count); | |
1569 | lustre_swab_lov_user_md_v3((struct lov_user_md_v3 *)lmm); | |
1570 | break; | |
1571 | default: | |
34e1f2bb JL |
1572 | rc = -EINVAL; |
1573 | goto free_lmm; | |
d7e09d03 PT |
1574 | } |
1575 | ||
1576 | rc = obd_unpackmd(sbi->ll_dt_exp, &lsm, lmm, lmmsize); | |
34e1f2bb JL |
1577 | if (rc < 0) { |
1578 | rc = -ENOMEM; | |
1579 | goto free_lmm; | |
1580 | } | |
d7e09d03 PT |
1581 | |
1582 | /* Perform glimpse_size operation. */ | |
1583 | memset(&st, 0, sizeof(st)); | |
1584 | ||
1585 | rc = ll_glimpse_ioctl(sbi, lsm, &st); | |
1586 | if (rc) | |
34e1f2bb | 1587 | goto free_lsm; |
d7e09d03 | 1588 | |
34e1f2bb JL |
1589 | if (copy_to_user(&lumd->lmd_st, &st, sizeof(st))) { |
1590 | rc = -EFAULT; | |
1591 | goto free_lsm; | |
1592 | } | |
d7e09d03 | 1593 | |
eb73f514 | 1594 | free_lsm: |
d7e09d03 | 1595 | obd_free_memmd(sbi->ll_dt_exp, &lsm); |
eb73f514 | 1596 | free_lmm: |
e958f49b | 1597 | kvfree(lmm); |
d7e09d03 PT |
1598 | return rc; |
1599 | } | |
1600 | case OBD_IOC_LLOG_CATINFO: { | |
0a3bdb00 | 1601 | return -EOPNOTSUPP; |
d7e09d03 PT |
1602 | } |
1603 | case OBD_IOC_QUOTACHECK: { | |
1604 | struct obd_quotactl *oqctl; | |
1605 | int error = 0; | |
1606 | ||
2eb90a75 | 1607 | if (!capable(CFS_CAP_SYS_ADMIN) || |
d7e09d03 | 1608 | sbi->ll_flags & LL_SBI_RMT_CLIENT) |
0a3bdb00 | 1609 | return -EPERM; |
d7e09d03 | 1610 | |
496a51bd | 1611 | oqctl = kzalloc(sizeof(*oqctl), GFP_NOFS); |
d7e09d03 | 1612 | if (!oqctl) |
0a3bdb00 | 1613 | return -ENOMEM; |
d7e09d03 PT |
1614 | oqctl->qc_type = arg; |
1615 | rc = obd_quotacheck(sbi->ll_md_exp, oqctl); | |
1616 | if (rc < 0) { | |
1617 | CDEBUG(D_INFO, "md_quotacheck failed: rc %d\n", rc); | |
1618 | error = rc; | |
1619 | } | |
1620 | ||
1621 | rc = obd_quotacheck(sbi->ll_dt_exp, oqctl); | |
1622 | if (rc < 0) | |
1623 | CDEBUG(D_INFO, "obd_quotacheck failed: rc %d\n", rc); | |
1624 | ||
97903a26 | 1625 | kfree(oqctl); |
d7e09d03 PT |
1626 | return error ?: rc; |
1627 | } | |
1628 | case OBD_IOC_POLL_QUOTACHECK: { | |
1629 | struct if_quotacheck *check; | |
1630 | ||
2eb90a75 | 1631 | if (!capable(CFS_CAP_SYS_ADMIN) || |
d7e09d03 | 1632 | sbi->ll_flags & LL_SBI_RMT_CLIENT) |
0a3bdb00 | 1633 | return -EPERM; |
d7e09d03 | 1634 | |
496a51bd | 1635 | check = kzalloc(sizeof(*check), GFP_NOFS); |
d7e09d03 | 1636 | if (!check) |
0a3bdb00 | 1637 | return -ENOMEM; |
d7e09d03 PT |
1638 | |
1639 | rc = obd_iocontrol(cmd, sbi->ll_md_exp, 0, (void *)check, | |
1640 | NULL); | |
1641 | if (rc) { | |
1642 | CDEBUG(D_QUOTA, "mdc ioctl %d failed: %d\n", cmd, rc); | |
af00f6c5 OD |
1643 | if (copy_to_user((void __user *)arg, check, |
1644 | sizeof(*check))) | |
d7e09d03 | 1645 | CDEBUG(D_QUOTA, "copy_to_user failed\n"); |
34e1f2bb | 1646 | goto out_poll; |
d7e09d03 PT |
1647 | } |
1648 | ||
1649 | rc = obd_iocontrol(cmd, sbi->ll_dt_exp, 0, (void *)check, | |
1650 | NULL); | |
1651 | if (rc) { | |
1652 | CDEBUG(D_QUOTA, "osc ioctl %d failed: %d\n", cmd, rc); | |
af00f6c5 OD |
1653 | if (copy_to_user((void __user *)arg, check, |
1654 | sizeof(*check))) | |
d7e09d03 | 1655 | CDEBUG(D_QUOTA, "copy_to_user failed\n"); |
34e1f2bb | 1656 | goto out_poll; |
d7e09d03 | 1657 | } |
eb73f514 | 1658 | out_poll: |
97903a26 | 1659 | kfree(check); |
0a3bdb00 | 1660 | return rc; |
d7e09d03 | 1661 | } |
d7e09d03 PT |
1662 | case LL_IOC_QUOTACTL: { |
1663 | struct if_quotactl *qctl; | |
1664 | ||
496a51bd | 1665 | qctl = kzalloc(sizeof(*qctl), GFP_NOFS); |
d7e09d03 | 1666 | if (!qctl) |
0a3bdb00 | 1667 | return -ENOMEM; |
d7e09d03 | 1668 | |
af00f6c5 | 1669 | if (copy_from_user(qctl, (void __user *)arg, sizeof(*qctl))) { |
34e1f2bb JL |
1670 | rc = -EFAULT; |
1671 | goto out_quotactl; | |
1672 | } | |
d7e09d03 PT |
1673 | |
1674 | rc = quotactl_ioctl(sbi, qctl); | |
1675 | ||
af00f6c5 OD |
1676 | if (rc == 0 && copy_to_user((void __user *)arg, qctl, |
1677 | sizeof(*qctl))) | |
d7e09d03 PT |
1678 | rc = -EFAULT; |
1679 | ||
eb73f514 | 1680 | out_quotactl: |
97903a26 | 1681 | kfree(qctl); |
0a3bdb00 | 1682 | return rc; |
d7e09d03 PT |
1683 | } |
1684 | case OBD_IOC_GETDTNAME: | |
1685 | case OBD_IOC_GETMDNAME: | |
0a3bdb00 | 1686 | return ll_get_obd_name(inode, cmd, arg); |
d7e09d03 | 1687 | case LL_IOC_FLUSHCTX: |
0a3bdb00 | 1688 | return ll_flush_ctx(inode); |
d7e09d03 PT |
1689 | #ifdef CONFIG_FS_POSIX_ACL |
1690 | case LL_IOC_RMTACL: { | |
f76c23da | 1691 | if (sbi->ll_flags & LL_SBI_RMT_CLIENT && is_root_inode(inode)) { |
d7e09d03 PT |
1692 | struct ll_file_data *fd = LUSTRE_FPRIVATE(file); |
1693 | ||
d7e09d03 PT |
1694 | rc = rct_add(&sbi->ll_rct, current_pid(), arg); |
1695 | if (!rc) | |
1696 | fd->fd_flags |= LL_FILE_RMTACL; | |
0a3bdb00 | 1697 | return rc; |
d7e09d03 | 1698 | } else |
0a3bdb00 | 1699 | return 0; |
d7e09d03 PT |
1700 | } |
1701 | #endif | |
1702 | case LL_IOC_GETOBDCOUNT: { | |
1703 | int count, vallen; | |
1704 | struct obd_export *exp; | |
1705 | ||
af00f6c5 | 1706 | if (copy_from_user(&count, (int __user *)arg, sizeof(int))) |
0a3bdb00 | 1707 | return -EFAULT; |
d7e09d03 PT |
1708 | |
1709 | /* get ost count when count is zero, get mdt count otherwise */ | |
1710 | exp = count ? sbi->ll_md_exp : sbi->ll_dt_exp; | |
1711 | vallen = sizeof(count); | |
1712 | rc = obd_get_info(NULL, exp, sizeof(KEY_TGT_COUNT), | |
1713 | KEY_TGT_COUNT, &vallen, &count, NULL); | |
1714 | if (rc) { | |
1715 | CERROR("get target count failed: %d\n", rc); | |
0a3bdb00 | 1716 | return rc; |
d7e09d03 PT |
1717 | } |
1718 | ||
af00f6c5 | 1719 | if (copy_to_user((int __user *)arg, &count, sizeof(int))) |
0a3bdb00 | 1720 | return -EFAULT; |
d7e09d03 | 1721 | |
0a3bdb00 | 1722 | return 0; |
d7e09d03 PT |
1723 | } |
1724 | case LL_IOC_PATH2FID: | |
af00f6c5 OD |
1725 | if (copy_to_user((void __user *)arg, ll_inode2fid(inode), |
1726 | sizeof(struct lu_fid))) | |
0a3bdb00 GKH |
1727 | return -EFAULT; |
1728 | return 0; | |
d7e09d03 | 1729 | case LL_IOC_GET_CONNECT_FLAGS: { |
e09bee34 OD |
1730 | return obd_iocontrol(cmd, sbi->ll_md_exp, 0, NULL, |
1731 | (void __user *)arg); | |
d7e09d03 PT |
1732 | } |
1733 | case OBD_IOC_CHANGELOG_SEND: | |
1734 | case OBD_IOC_CHANGELOG_CLEAR: | |
bbaa9c10 NY |
1735 | if (!capable(CFS_CAP_SYS_ADMIN)) |
1736 | return -EPERM; | |
1737 | ||
af00f6c5 | 1738 | rc = copy_and_ioctl(cmd, sbi->ll_md_exp, (void __user *)arg, |
d7e09d03 | 1739 | sizeof(struct ioc_changelog)); |
0a3bdb00 | 1740 | return rc; |
d7e09d03 | 1741 | case OBD_IOC_FID2PATH: |
7ec89fa5 | 1742 | return ll_fid2path(inode, (void __user *)arg); |
d7e09d03 PT |
1743 | case LL_IOC_HSM_REQUEST: { |
1744 | struct hsm_user_request *hur; | |
6b2eb32e | 1745 | ssize_t totalsize; |
d7e09d03 | 1746 | |
af00f6c5 | 1747 | hur = memdup_user((void __user *)arg, sizeof(*hur)); |
4a07594e AH |
1748 | if (IS_ERR(hur)) |
1749 | return PTR_ERR(hur); | |
d7e09d03 PT |
1750 | |
1751 | /* Compute the whole struct size */ | |
1752 | totalsize = hur_len(hur); | |
97903a26 | 1753 | kfree(hur); |
6b2eb32e NC |
1754 | if (totalsize < 0) |
1755 | return -E2BIG; | |
e55c4476 JN |
1756 | |
1757 | /* Final size will be more than double totalsize */ | |
1758 | if (totalsize >= MDS_MAXREQSIZE / 3) | |
1759 | return -E2BIG; | |
1760 | ||
e958f49b | 1761 | hur = libcfs_kvzalloc(totalsize, GFP_NOFS); |
6e16818b | 1762 | if (!hur) |
0a3bdb00 | 1763 | return -ENOMEM; |
d7e09d03 PT |
1764 | |
1765 | /* Copy the whole struct */ | |
af00f6c5 | 1766 | if (copy_from_user(hur, (void __user *)arg, totalsize)) { |
e958f49b | 1767 | kvfree(hur); |
0a3bdb00 | 1768 | return -EFAULT; |
d7e09d03 PT |
1769 | } |
1770 | ||
48d23e61 JX |
1771 | if (hur->hur_request.hr_action == HUA_RELEASE) { |
1772 | const struct lu_fid *fid; | |
1773 | struct inode *f; | |
1774 | int i; | |
1775 | ||
1776 | for (i = 0; i < hur->hur_request.hr_itemcount; i++) { | |
1777 | fid = &hur->hur_user_item[i].hui_fid; | |
1778 | f = search_inode_for_lustre(inode->i_sb, fid); | |
1779 | if (IS_ERR(f)) { | |
1780 | rc = PTR_ERR(f); | |
1781 | break; | |
1782 | } | |
1783 | ||
1784 | rc = ll_hsm_release(f); | |
1785 | iput(f); | |
1786 | if (rc != 0) | |
1787 | break; | |
1788 | } | |
1789 | } else { | |
1790 | rc = obd_iocontrol(cmd, ll_i2mdexp(inode), totalsize, | |
1791 | hur, NULL); | |
1792 | } | |
d7e09d03 | 1793 | |
e958f49b | 1794 | kvfree(hur); |
d7e09d03 | 1795 | |
0a3bdb00 | 1796 | return rc; |
d7e09d03 PT |
1797 | } |
1798 | case LL_IOC_HSM_PROGRESS: { | |
1799 | struct hsm_progress_kernel hpk; | |
1800 | struct hsm_progress hp; | |
1801 | ||
af00f6c5 | 1802 | if (copy_from_user(&hp, (void __user *)arg, sizeof(hp))) |
0a3bdb00 | 1803 | return -EFAULT; |
d7e09d03 PT |
1804 | |
1805 | hpk.hpk_fid = hp.hp_fid; | |
1806 | hpk.hpk_cookie = hp.hp_cookie; | |
1807 | hpk.hpk_extent = hp.hp_extent; | |
1808 | hpk.hpk_flags = hp.hp_flags; | |
1809 | hpk.hpk_errval = hp.hp_errval; | |
1810 | hpk.hpk_data_version = 0; | |
1811 | ||
1812 | /* File may not exist in Lustre; all progress | |
c0894c6c OD |
1813 | * reported to Lustre root |
1814 | */ | |
d7e09d03 PT |
1815 | rc = obd_iocontrol(cmd, sbi->ll_md_exp, sizeof(hpk), &hpk, |
1816 | NULL); | |
0a3bdb00 | 1817 | return rc; |
d7e09d03 PT |
1818 | } |
1819 | case LL_IOC_HSM_CT_START: | |
af00f6c5 | 1820 | rc = copy_and_ioctl(cmd, sbi->ll_md_exp, (void __user *)arg, |
d7e09d03 | 1821 | sizeof(struct lustre_kernelcomm)); |
0a3bdb00 | 1822 | return rc; |
d7e09d03 PT |
1823 | |
1824 | case LL_IOC_HSM_COPY_START: { | |
1825 | struct hsm_copy *copy; | |
1826 | int rc; | |
1827 | ||
af00f6c5 | 1828 | copy = memdup_user((char __user *)arg, sizeof(*copy)); |
4a07594e AH |
1829 | if (IS_ERR(copy)) |
1830 | return PTR_ERR(copy); | |
d7e09d03 PT |
1831 | |
1832 | rc = ll_ioc_copy_start(inode->i_sb, copy); | |
af00f6c5 | 1833 | if (copy_to_user((char __user *)arg, copy, sizeof(*copy))) |
d7e09d03 PT |
1834 | rc = -EFAULT; |
1835 | ||
97903a26 | 1836 | kfree(copy); |
0a3bdb00 | 1837 | return rc; |
d7e09d03 PT |
1838 | } |
1839 | case LL_IOC_HSM_COPY_END: { | |
1840 | struct hsm_copy *copy; | |
1841 | int rc; | |
1842 | ||
af00f6c5 | 1843 | copy = memdup_user((char __user *)arg, sizeof(*copy)); |
4a07594e AH |
1844 | if (IS_ERR(copy)) |
1845 | return PTR_ERR(copy); | |
d7e09d03 PT |
1846 | |
1847 | rc = ll_ioc_copy_end(inode->i_sb, copy); | |
af00f6c5 | 1848 | if (copy_to_user((char __user *)arg, copy, sizeof(*copy))) |
d7e09d03 PT |
1849 | rc = -EFAULT; |
1850 | ||
97903a26 | 1851 | kfree(copy); |
0a3bdb00 | 1852 | return rc; |
d7e09d03 PT |
1853 | } |
1854 | default: | |
e09bee34 OD |
1855 | return obd_iocontrol(cmd, sbi->ll_dt_exp, 0, NULL, |
1856 | (void __user *)arg); | |
d7e09d03 PT |
1857 | } |
1858 | } | |
1859 | ||
1860 | static loff_t ll_dir_seek(struct file *file, loff_t offset, int origin) | |
1861 | { | |
1862 | struct inode *inode = file->f_mapping->host; | |
1863 | struct ll_file_data *fd = LUSTRE_FPRIVATE(file); | |
1864 | struct ll_sb_info *sbi = ll_i2sbi(inode); | |
1865 | int api32 = ll_need_32bit_api(sbi); | |
1866 | loff_t ret = -EINVAL; | |
d7e09d03 | 1867 | |
5955102c | 1868 | inode_lock(inode); |
d7e09d03 | 1869 | switch (origin) { |
e17f5594 | 1870 | case SEEK_SET: |
1871 | break; | |
1872 | case SEEK_CUR: | |
1873 | offset += file->f_pos; | |
1874 | break; | |
1875 | case SEEK_END: | |
1876 | if (offset > 0) | |
34e1f2bb | 1877 | goto out; |
e17f5594 | 1878 | if (api32) |
1879 | offset += LL_DIR_END_OFF_32BIT; | |
1880 | else | |
1881 | offset += LL_DIR_END_OFF; | |
1882 | break; | |
1883 | default: | |
1884 | goto out; | |
d7e09d03 PT |
1885 | } |
1886 | ||
1887 | if (offset >= 0 && | |
1888 | ((api32 && offset <= LL_DIR_END_OFF_32BIT) || | |
1889 | (!api32 && offset <= LL_DIR_END_OFF))) { | |
1890 | if (offset != file->f_pos) { | |
1891 | if ((api32 && offset == LL_DIR_END_OFF_32BIT) || | |
1892 | (!api32 && offset == LL_DIR_END_OFF)) | |
1893 | fd->lfd_pos = MDS_DIR_END_OFF; | |
1894 | else if (api32 && sbi->ll_flags & LL_SBI_64BIT_HASH) | |
1895 | fd->lfd_pos = offset << 32; | |
1896 | else | |
1897 | fd->lfd_pos = offset; | |
1898 | file->f_pos = offset; | |
1899 | file->f_version = 0; | |
1900 | } | |
1901 | ret = offset; | |
1902 | } | |
34e1f2bb | 1903 | goto out; |
d7e09d03 PT |
1904 | |
1905 | out: | |
5955102c | 1906 | inode_unlock(inode); |
d7e09d03 PT |
1907 | return ret; |
1908 | } | |
1909 | ||
2d95f10e | 1910 | static int ll_dir_open(struct inode *inode, struct file *file) |
d7e09d03 | 1911 | { |
0a3bdb00 | 1912 | return ll_file_open(inode, file); |
d7e09d03 PT |
1913 | } |
1914 | ||
2d95f10e | 1915 | static int ll_dir_release(struct inode *inode, struct file *file) |
d7e09d03 | 1916 | { |
0a3bdb00 | 1917 | return ll_file_release(inode, file); |
d7e09d03 PT |
1918 | } |
1919 | ||
2d95f10e | 1920 | const struct file_operations ll_dir_operations = { |
d7e09d03 PT |
1921 | .llseek = ll_dir_seek, |
1922 | .open = ll_dir_open, | |
1923 | .release = ll_dir_release, | |
1924 | .read = generic_read_dir, | |
0b09d381 | 1925 | .iterate = ll_readdir, |
d7e09d03 PT |
1926 | .unlocked_ioctl = ll_dir_ioctl, |
1927 | .fsync = ll_fsync, | |
1928 | }; |