Commit | Line | Data |
---|---|---|
b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
5db11c21 MM |
2 | /* |
3 | * (C) 2001 Clemson University and The University of Chicago | |
afd9fb2a | 4 | * Copyright 2018 Omnibond Systems, L.L.C. |
5db11c21 MM |
5 | * |
6 | * See COPYING in top-level directory. | |
7 | */ | |
8 | ||
9 | /* | |
10 | * Linux VFS inode operations. | |
11 | */ | |
12 | ||
ccdf7741 | 13 | #include <linux/blkdev.h> |
1f26b062 | 14 | #include <linux/fileattr.h> |
5db11c21 | 15 | #include "protocol.h" |
575e9461 MM |
16 | #include "orangefs-kernel.h" |
17 | #include "orangefs-bufmap.h" | |
5db11c21 | 18 | |
52e2d0a3 MB |
19 | static int orangefs_writepage_locked(struct page *page, |
20 | struct writeback_control *wbc) | |
85ac799c MB |
21 | { |
22 | struct inode *inode = page->mapping->host; | |
52e2d0a3 | 23 | struct orangefs_write_range *wr = NULL; |
85ac799c MB |
24 | struct iov_iter iter; |
25 | struct bio_vec bv; | |
26 | size_t len, wlen; | |
27 | ssize_t ret; | |
28 | loff_t off; | |
29 | ||
30 | set_page_writeback(page); | |
31 | ||
85ac799c | 32 | len = i_size_read(inode); |
52e2d0a3 MB |
33 | if (PagePrivate(page)) { |
34 | wr = (struct orangefs_write_range *)page_private(page); | |
8f04e1be | 35 | WARN_ON(wr->pos >= len); |
52e2d0a3 MB |
36 | off = wr->pos; |
37 | if (off + wr->len > len) | |
38 | wlen = len - off; | |
39 | else | |
40 | wlen = wr->len; | |
41 | } else { | |
42 | WARN_ON(1); | |
43 | off = page_offset(page); | |
44 | if (off + PAGE_SIZE > len) | |
45 | wlen = len - off; | |
46 | else | |
47 | wlen = PAGE_SIZE; | |
85ac799c | 48 | } |
2a40be81 | 49 | /* Should've been handled in orangefs_invalidate_folio. */ |
52e2d0a3 | 50 | WARN_ON(off == len || off + wlen > len); |
85ac799c MB |
51 | |
52 | bv.bv_page = page; | |
53 | bv.bv_len = wlen; | |
54 | bv.bv_offset = off % PAGE_SIZE; | |
52e2d0a3 | 55 | WARN_ON(wlen == 0); |
85ac799c MB |
56 | iov_iter_bvec(&iter, WRITE, &bv, 1, wlen); |
57 | ||
58 | ret = wait_for_direct_io(ORANGEFS_IO_WRITE, inode, &off, &iter, wlen, | |
f9bbb682 | 59 | len, wr, NULL, NULL); |
85ac799c MB |
60 | if (ret < 0) { |
61 | SetPageError(page); | |
62 | mapping_set_error(page->mapping, ret); | |
63 | } else { | |
64 | ret = 0; | |
65 | } | |
4c42be38 | 66 | kfree(detach_page_private(page)); |
52e2d0a3 MB |
67 | return ret; |
68 | } | |
69 | ||
70 | static int orangefs_writepage(struct page *page, struct writeback_control *wbc) | |
71 | { | |
72 | int ret; | |
73 | ret = orangefs_writepage_locked(page, wbc); | |
85ac799c MB |
74 | unlock_page(page); |
75 | end_page_writeback(page); | |
76 | return ret; | |
77 | } | |
78 | ||
8f04e1be MB |
79 | struct orangefs_writepages { |
80 | loff_t off; | |
81 | size_t len; | |
82 | kuid_t uid; | |
83 | kgid_t gid; | |
84 | int maxpages; | |
85 | int npages; | |
86 | struct page **pages; | |
87 | struct bio_vec *bv; | |
88 | }; | |
89 | ||
90 | static int orangefs_writepages_work(struct orangefs_writepages *ow, | |
91 | struct writeback_control *wbc) | |
92 | { | |
93 | struct inode *inode = ow->pages[0]->mapping->host; | |
94 | struct orangefs_write_range *wrp, wr; | |
95 | struct iov_iter iter; | |
96 | ssize_t ret; | |
97 | size_t len; | |
98 | loff_t off; | |
99 | int i; | |
100 | ||
101 | len = i_size_read(inode); | |
102 | ||
103 | for (i = 0; i < ow->npages; i++) { | |
104 | set_page_writeback(ow->pages[i]); | |
105 | ow->bv[i].bv_page = ow->pages[i]; | |
106 | ow->bv[i].bv_len = min(page_offset(ow->pages[i]) + PAGE_SIZE, | |
107 | ow->off + ow->len) - | |
108 | max(ow->off, page_offset(ow->pages[i])); | |
109 | if (i == 0) | |
110 | ow->bv[i].bv_offset = ow->off - | |
111 | page_offset(ow->pages[i]); | |
112 | else | |
113 | ow->bv[i].bv_offset = 0; | |
114 | } | |
115 | iov_iter_bvec(&iter, WRITE, ow->bv, ow->npages, ow->len); | |
116 | ||
117 | WARN_ON(ow->off >= len); | |
118 | if (ow->off + ow->len > len) | |
119 | ow->len = len - ow->off; | |
120 | ||
121 | off = ow->off; | |
122 | wr.uid = ow->uid; | |
123 | wr.gid = ow->gid; | |
124 | ret = wait_for_direct_io(ORANGEFS_IO_WRITE, inode, &off, &iter, ow->len, | |
f9bbb682 | 125 | 0, &wr, NULL, NULL); |
8f04e1be MB |
126 | if (ret < 0) { |
127 | for (i = 0; i < ow->npages; i++) { | |
128 | SetPageError(ow->pages[i]); | |
129 | mapping_set_error(ow->pages[i]->mapping, ret); | |
130 | if (PagePrivate(ow->pages[i])) { | |
131 | wrp = (struct orangefs_write_range *) | |
132 | page_private(ow->pages[i]); | |
133 | ClearPagePrivate(ow->pages[i]); | |
134 | put_page(ow->pages[i]); | |
135 | kfree(wrp); | |
136 | } | |
137 | end_page_writeback(ow->pages[i]); | |
138 | unlock_page(ow->pages[i]); | |
139 | } | |
140 | } else { | |
141 | ret = 0; | |
142 | for (i = 0; i < ow->npages; i++) { | |
143 | if (PagePrivate(ow->pages[i])) { | |
144 | wrp = (struct orangefs_write_range *) | |
145 | page_private(ow->pages[i]); | |
146 | ClearPagePrivate(ow->pages[i]); | |
147 | put_page(ow->pages[i]); | |
148 | kfree(wrp); | |
149 | } | |
150 | end_page_writeback(ow->pages[i]); | |
151 | unlock_page(ow->pages[i]); | |
152 | } | |
153 | } | |
154 | return ret; | |
155 | } | |
156 | ||
157 | static int orangefs_writepages_callback(struct page *page, | |
158 | struct writeback_control *wbc, void *data) | |
159 | { | |
160 | struct orangefs_writepages *ow = data; | |
161 | struct orangefs_write_range *wr; | |
162 | int ret; | |
163 | ||
164 | if (!PagePrivate(page)) { | |
165 | unlock_page(page); | |
166 | /* It's not private so there's nothing to write, right? */ | |
167 | printk("writepages_callback not private!\n"); | |
168 | BUG(); | |
169 | return 0; | |
170 | } | |
171 | wr = (struct orangefs_write_range *)page_private(page); | |
172 | ||
173 | ret = -1; | |
174 | if (ow->npages == 0) { | |
175 | ow->off = wr->pos; | |
176 | ow->len = wr->len; | |
177 | ow->uid = wr->uid; | |
178 | ow->gid = wr->gid; | |
179 | ow->pages[ow->npages++] = page; | |
180 | ret = 0; | |
181 | goto done; | |
182 | } | |
183 | if (!uid_eq(ow->uid, wr->uid) || !gid_eq(ow->gid, wr->gid)) { | |
184 | orangefs_writepages_work(ow, wbc); | |
185 | ow->npages = 0; | |
186 | ret = -1; | |
187 | goto done; | |
188 | } | |
189 | if (ow->off + ow->len == wr->pos) { | |
190 | ow->len += wr->len; | |
191 | ow->pages[ow->npages++] = page; | |
192 | ret = 0; | |
193 | goto done; | |
194 | } | |
195 | done: | |
196 | if (ret == -1) { | |
197 | if (ow->npages) { | |
198 | orangefs_writepages_work(ow, wbc); | |
199 | ow->npages = 0; | |
200 | } | |
201 | ret = orangefs_writepage_locked(page, wbc); | |
202 | mapping_set_error(page->mapping, ret); | |
203 | unlock_page(page); | |
204 | end_page_writeback(page); | |
205 | } else { | |
206 | if (ow->npages == ow->maxpages) { | |
207 | orangefs_writepages_work(ow, wbc); | |
208 | ow->npages = 0; | |
209 | } | |
210 | } | |
211 | return ret; | |
212 | } | |
213 | ||
214 | static int orangefs_writepages(struct address_space *mapping, | |
215 | struct writeback_control *wbc) | |
216 | { | |
217 | struct orangefs_writepages *ow; | |
218 | struct blk_plug plug; | |
219 | int ret; | |
220 | ow = kzalloc(sizeof(struct orangefs_writepages), GFP_KERNEL); | |
221 | if (!ow) | |
222 | return -ENOMEM; | |
223 | ow->maxpages = orangefs_bufmap_size_query()/PAGE_SIZE; | |
224 | ow->pages = kcalloc(ow->maxpages, sizeof(struct page *), GFP_KERNEL); | |
225 | if (!ow->pages) { | |
226 | kfree(ow); | |
227 | return -ENOMEM; | |
228 | } | |
229 | ow->bv = kcalloc(ow->maxpages, sizeof(struct bio_vec), GFP_KERNEL); | |
230 | if (!ow->bv) { | |
231 | kfree(ow->pages); | |
232 | kfree(ow); | |
233 | return -ENOMEM; | |
234 | } | |
235 | blk_start_plug(&plug); | |
236 | ret = write_cache_pages(mapping, wbc, orangefs_writepages_callback, ow); | |
237 | if (ow->npages) | |
238 | ret = orangefs_writepages_work(ow, wbc); | |
239 | blk_finish_plug(&plug); | |
240 | kfree(ow->pages); | |
241 | kfree(ow->bv); | |
242 | kfree(ow); | |
243 | return ret; | |
244 | } | |
245 | ||
eabf038f | 246 | static int orangefs_launder_folio(struct folio *); |
dd59a647 | 247 | |
0c4b7cad MM |
248 | static void orangefs_readahead(struct readahead_control *rac) |
249 | { | |
250 | loff_t offset; | |
251 | struct iov_iter iter; | |
24523e45 | 252 | struct inode *inode = rac->mapping->host; |
0c4b7cad MM |
253 | struct xarray *i_pages; |
254 | struct page *page; | |
255 | loff_t new_start = readahead_pos(rac); | |
256 | int ret; | |
257 | size_t new_len = 0; | |
258 | ||
259 | loff_t bytes_remaining = inode->i_size - readahead_pos(rac); | |
260 | loff_t pages_remaining = bytes_remaining / PAGE_SIZE; | |
261 | ||
262 | if (pages_remaining >= 1024) | |
263 | new_len = 4194304; | |
264 | else if (pages_remaining > readahead_count(rac)) | |
265 | new_len = bytes_remaining; | |
266 | ||
267 | if (new_len) | |
268 | readahead_expand(rac, new_start, new_len); | |
269 | ||
270 | offset = readahead_pos(rac); | |
24523e45 | 271 | i_pages = &rac->mapping->i_pages; |
0c4b7cad MM |
272 | |
273 | iov_iter_xarray(&iter, READ, i_pages, offset, readahead_length(rac)); | |
274 | ||
275 | /* read in the pages. */ | |
276 | if ((ret = wait_for_direct_io(ORANGEFS_IO_READ, inode, | |
277 | &offset, &iter, readahead_length(rac), | |
24523e45 | 278 | inode->i_size, NULL, NULL, rac->file)) < 0) |
0c4b7cad MM |
279 | gossip_debug(GOSSIP_FILE_DEBUG, |
280 | "%s: wait_for_direct_io failed. \n", __func__); | |
281 | else | |
282 | ret = 0; | |
283 | ||
284 | /* clean up. */ | |
285 | while ((page = readahead_page(rac))) { | |
286 | page_endio(page, false, ret); | |
287 | put_page(page); | |
288 | } | |
289 | } | |
290 | ||
1a641788 | 291 | static int orangefs_read_folio(struct file *file, struct folio *folio) |
5db11c21 | 292 | { |
1a641788 | 293 | struct inode *inode = folio->mapping->host; |
c453dcfc MB |
294 | struct iov_iter iter; |
295 | struct bio_vec bv; | |
296 | ssize_t ret; | |
1a641788 | 297 | loff_t off; /* offset of this folio in the file */ |
dd59a647 | 298 | |
eabf038f MWO |
299 | if (folio_test_dirty(folio)) |
300 | orangefs_launder_folio(folio); | |
c453dcfc | 301 | |
1a641788 MWO |
302 | off = folio_pos(folio); |
303 | bv.bv_page = &folio->page; | |
304 | bv.bv_len = folio_size(folio); | |
c453dcfc | 305 | bv.bv_offset = 0; |
1a641788 | 306 | iov_iter_bvec(&iter, READ, &bv, 1, folio_size(folio)); |
c453dcfc MB |
307 | |
308 | ret = wait_for_direct_io(ORANGEFS_IO_READ, inode, &off, &iter, | |
1a641788 | 309 | folio_size(folio), inode->i_size, NULL, NULL, file); |
74f68fce | 310 | /* this will only zero remaining unread portions of the page data */ |
c453dcfc | 311 | iov_iter_zero(~0U, &iter); |
5db11c21 | 312 | /* takes care of potential aliasing */ |
1a641788 | 313 | flush_dcache_folio(folio); |
c453dcfc | 314 | if (ret < 0) { |
1a641788 | 315 | folio_set_error(folio); |
5db11c21 | 316 | } else { |
1a641788 MWO |
317 | folio_mark_uptodate(folio); |
318 | if (folio_test_error(folio)) | |
319 | folio_clear_error(folio); | |
5db11c21 MM |
320 | ret = 0; |
321 | } | |
1a641788 MWO |
322 | /* unlock the folio after the ->read_folio() routine completes */ |
323 | folio_unlock(folio); | |
0c4b7cad | 324 | return ret; |
5db11c21 MM |
325 | } |
326 | ||
52e2d0a3 | 327 | static int orangefs_write_begin(struct file *file, |
9d6b0cd7 MWO |
328 | struct address_space *mapping, loff_t pos, unsigned len, |
329 | struct page **pagep, void **fsdata) | |
52e2d0a3 MB |
330 | { |
331 | struct orangefs_write_range *wr; | |
eabf038f | 332 | struct folio *folio; |
52e2d0a3 MB |
333 | struct page *page; |
334 | pgoff_t index; | |
335 | int ret; | |
336 | ||
337 | index = pos >> PAGE_SHIFT; | |
338 | ||
b7446e7c | 339 | page = grab_cache_page_write_begin(mapping, index); |
52e2d0a3 MB |
340 | if (!page) |
341 | return -ENOMEM; | |
342 | ||
343 | *pagep = page; | |
eabf038f | 344 | folio = page_folio(page); |
52e2d0a3 | 345 | |
eabf038f | 346 | if (folio_test_dirty(folio) && !folio_test_private(folio)) { |
52e2d0a3 MB |
347 | /* |
348 | * Should be impossible. If it happens, launder the page | |
349 | * since we don't know what's dirty. This will WARN in | |
350 | * orangefs_writepage_locked. | |
351 | */ | |
eabf038f | 352 | ret = orangefs_launder_folio(folio); |
52e2d0a3 MB |
353 | if (ret) |
354 | return ret; | |
355 | } | |
eabf038f | 356 | if (folio_test_private(folio)) { |
52e2d0a3 | 357 | struct orangefs_write_range *wr; |
eabf038f | 358 | wr = folio_get_private(folio); |
52e2d0a3 MB |
359 | if (wr->pos + wr->len == pos && |
360 | uid_eq(wr->uid, current_fsuid()) && | |
361 | gid_eq(wr->gid, current_fsgid())) { | |
362 | wr->len += len; | |
363 | goto okay; | |
364 | } else { | |
eabf038f | 365 | ret = orangefs_launder_folio(folio); |
52e2d0a3 MB |
366 | if (ret) |
367 | return ret; | |
368 | } | |
52e2d0a3 MB |
369 | } |
370 | ||
371 | wr = kmalloc(sizeof *wr, GFP_KERNEL); | |
372 | if (!wr) | |
373 | return -ENOMEM; | |
374 | ||
375 | wr->pos = pos; | |
376 | wr->len = len; | |
377 | wr->uid = current_fsuid(); | |
378 | wr->gid = current_fsgid(); | |
eabf038f | 379 | folio_attach_private(folio, wr); |
52e2d0a3 | 380 | okay: |
52e2d0a3 MB |
381 | return 0; |
382 | } | |
383 | ||
85ac799c MB |
384 | static int orangefs_write_end(struct file *file, struct address_space *mapping, |
385 | loff_t pos, unsigned len, unsigned copied, struct page *page, void *fsdata) | |
386 | { | |
8f04e1be MB |
387 | struct inode *inode = page->mapping->host; |
388 | loff_t last_pos = pos + copied; | |
389 | ||
390 | /* | |
391 | * No need to use i_size_read() here, the i_size | |
392 | * cannot change under us because we hold the i_mutex. | |
393 | */ | |
394 | if (last_pos > inode->i_size) | |
395 | i_size_write(inode, last_pos); | |
396 | ||
397 | /* zero the stale part of the page if we did a short copy */ | |
398 | if (!PageUptodate(page)) { | |
399 | unsigned from = pos & (PAGE_SIZE - 1); | |
400 | if (copied < len) { | |
401 | zero_user(page, from + copied, len - copied); | |
402 | } | |
403 | /* Set fully written pages uptodate. */ | |
404 | if (pos == page_offset(page) && | |
405 | (len == PAGE_SIZE || pos + len == inode->i_size)) { | |
406 | zero_user_segment(page, from + copied, PAGE_SIZE); | |
407 | SetPageUptodate(page); | |
408 | } | |
409 | } | |
410 | ||
411 | set_page_dirty(page); | |
412 | unlock_page(page); | |
413 | put_page(page); | |
414 | ||
85ac799c | 415 | mark_inode_dirty_sync(file_inode(file)); |
8f04e1be | 416 | return copied; |
85ac799c MB |
417 | } |
418 | ||
2a40be81 MWO |
419 | static void orangefs_invalidate_folio(struct folio *folio, |
420 | size_t offset, size_t length) | |
5db11c21 | 421 | { |
2a40be81 | 422 | struct orangefs_write_range *wr = folio_get_private(folio); |
52e2d0a3 MB |
423 | |
424 | if (offset == 0 && length == PAGE_SIZE) { | |
2a40be81 | 425 | kfree(folio_detach_private(folio)); |
8f04e1be | 426 | return; |
52e2d0a3 | 427 | /* write range entirely within invalidate range (or equal) */ |
2a40be81 MWO |
428 | } else if (folio_pos(folio) + offset <= wr->pos && |
429 | wr->pos + wr->len <= folio_pos(folio) + offset + length) { | |
430 | kfree(folio_detach_private(folio)); | |
52e2d0a3 | 431 | /* XXX is this right? only caller in fs */ |
2a40be81 | 432 | folio_cancel_dirty(folio); |
8f04e1be | 433 | return; |
52e2d0a3 | 434 | /* invalidate range chops off end of write range */ |
2a40be81 MWO |
435 | } else if (wr->pos < folio_pos(folio) + offset && |
436 | wr->pos + wr->len <= folio_pos(folio) + offset + length && | |
437 | folio_pos(folio) + offset < wr->pos + wr->len) { | |
52e2d0a3 | 438 | size_t x; |
2a40be81 | 439 | x = wr->pos + wr->len - (folio_pos(folio) + offset); |
52e2d0a3 MB |
440 | WARN_ON(x > wr->len); |
441 | wr->len -= x; | |
442 | wr->uid = current_fsuid(); | |
443 | wr->gid = current_fsgid(); | |
444 | /* invalidate range chops off beginning of write range */ | |
2a40be81 MWO |
445 | } else if (folio_pos(folio) + offset <= wr->pos && |
446 | folio_pos(folio) + offset + length < wr->pos + wr->len && | |
447 | wr->pos < folio_pos(folio) + offset + length) { | |
52e2d0a3 | 448 | size_t x; |
2a40be81 | 449 | x = folio_pos(folio) + offset + length - wr->pos; |
52e2d0a3 MB |
450 | WARN_ON(x > wr->len); |
451 | wr->pos += x; | |
452 | wr->len -= x; | |
453 | wr->uid = current_fsuid(); | |
454 | wr->gid = current_fsgid(); | |
455 | /* invalidate range entirely within write range (punch hole) */ | |
2a40be81 MWO |
456 | } else if (wr->pos < folio_pos(folio) + offset && |
457 | folio_pos(folio) + offset + length < wr->pos + wr->len) { | |
52e2d0a3 MB |
458 | /* XXX what do we do here... should not WARN_ON */ |
459 | WARN_ON(1); | |
460 | /* punch hole */ | |
461 | /* | |
462 | * should we just ignore this and write it out anyway? | |
463 | * it hardly makes sense | |
464 | */ | |
8f04e1be | 465 | return; |
52e2d0a3 MB |
466 | /* non-overlapping ranges */ |
467 | } else { | |
468 | /* WARN if they do overlap */ | |
2a40be81 MWO |
469 | if (!((folio_pos(folio) + offset + length <= wr->pos) ^ |
470 | (wr->pos + wr->len <= folio_pos(folio) + offset))) { | |
52e2d0a3 | 471 | WARN_ON(1); |
2a40be81 MWO |
472 | printk("invalidate range offset %llu length %zu\n", |
473 | folio_pos(folio) + offset, length); | |
52e2d0a3 MB |
474 | printk("write range offset %llu length %zu\n", |
475 | wr->pos, wr->len); | |
476 | } | |
8f04e1be | 477 | return; |
52e2d0a3 | 478 | } |
8f04e1be MB |
479 | |
480 | /* | |
481 | * Above there are returns where wr is freed or where we WARN. | |
482 | * Thus the following runs if wr was modified above. | |
483 | */ | |
484 | ||
eabf038f | 485 | orangefs_launder_folio(folio); |
52e2d0a3 | 486 | } |
5db11c21 | 487 | |
4993474a | 488 | static bool orangefs_release_folio(struct folio *folio, gfp_t foo) |
52e2d0a3 | 489 | { |
4993474a | 490 | return !folio_test_private(folio); |
52e2d0a3 | 491 | } |
5db11c21 | 492 | |
c78ac80e | 493 | static void orangefs_free_folio(struct folio *folio) |
52e2d0a3 | 494 | { |
c78ac80e | 495 | kfree(folio_detach_private(folio)); |
5db11c21 MM |
496 | } |
497 | ||
eabf038f | 498 | static int orangefs_launder_folio(struct folio *folio) |
5db11c21 | 499 | { |
52e2d0a3 MB |
500 | int r = 0; |
501 | struct writeback_control wbc = { | |
502 | .sync_mode = WB_SYNC_ALL, | |
503 | .nr_to_write = 0, | |
504 | }; | |
eabf038f MWO |
505 | folio_wait_writeback(folio); |
506 | if (folio_clear_dirty_for_io(folio)) { | |
507 | r = orangefs_writepage_locked(&folio->page, &wbc); | |
508 | folio_end_writeback(folio); | |
52e2d0a3 MB |
509 | } |
510 | return r; | |
5db11c21 MM |
511 | } |
512 | ||
3903f150 MM |
513 | static ssize_t orangefs_direct_IO(struct kiocb *iocb, |
514 | struct iov_iter *iter) | |
515 | { | |
3e9dfc6e MB |
516 | /* |
517 | * Comment from original do_readv_writev: | |
518 | * Common entry point for read/write/readv/writev | |
519 | * This function will dispatch it to either the direct I/O | |
520 | * or buffered I/O path depending on the mount options and/or | |
521 | * augmented/extended metadata attached to the file. | |
522 | * Note: File extended attributes override any mount options. | |
523 | */ | |
c453dcfc | 524 | struct file *file = iocb->ki_filp; |
3e9dfc6e MB |
525 | loff_t pos = iocb->ki_pos; |
526 | enum ORANGEFS_io_type type = iov_iter_rw(iter) == WRITE ? | |
527 | ORANGEFS_IO_WRITE : ORANGEFS_IO_READ; | |
528 | loff_t *offset = &pos; | |
529 | struct inode *inode = file->f_mapping->host; | |
530 | struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); | |
531 | struct orangefs_khandle *handle = &orangefs_inode->refn.khandle; | |
532 | size_t count = iov_iter_count(iter); | |
3e9dfc6e MB |
533 | ssize_t total_count = 0; |
534 | ssize_t ret = -EINVAL; | |
535 | int i = 0; | |
536 | ||
537 | gossip_debug(GOSSIP_FILE_DEBUG, | |
538 | "%s-BEGIN(%pU): count(%d) after estimate_max_iovecs.\n", | |
539 | __func__, | |
540 | handle, | |
541 | (int)count); | |
542 | ||
543 | if (type == ORANGEFS_IO_WRITE) { | |
544 | gossip_debug(GOSSIP_FILE_DEBUG, | |
545 | "%s(%pU): proceeding with offset : %llu, " | |
546 | "size %d\n", | |
547 | __func__, | |
548 | handle, | |
549 | llu(*offset), | |
550 | (int)count); | |
551 | } | |
552 | ||
553 | if (count == 0) { | |
554 | ret = 0; | |
555 | goto out; | |
556 | } | |
557 | ||
558 | while (iov_iter_count(iter)) { | |
559 | size_t each_count = iov_iter_count(iter); | |
560 | size_t amt_complete; | |
561 | i++; | |
562 | ||
563 | /* how much to transfer in this loop iteration */ | |
564 | if (each_count > orangefs_bufmap_size_query()) | |
565 | each_count = orangefs_bufmap_size_query(); | |
566 | ||
567 | gossip_debug(GOSSIP_FILE_DEBUG, | |
568 | "%s(%pU): size of each_count(%d)\n", | |
569 | __func__, | |
570 | handle, | |
571 | (int)each_count); | |
572 | gossip_debug(GOSSIP_FILE_DEBUG, | |
573 | "%s(%pU): BEFORE wait_for_io: offset is %d\n", | |
574 | __func__, | |
575 | handle, | |
576 | (int)*offset); | |
577 | ||
578 | ret = wait_for_direct_io(type, inode, offset, iter, | |
f9bbb682 | 579 | each_count, 0, NULL, NULL, file); |
3e9dfc6e MB |
580 | gossip_debug(GOSSIP_FILE_DEBUG, |
581 | "%s(%pU): return from wait_for_io:%d\n", | |
582 | __func__, | |
583 | handle, | |
584 | (int)ret); | |
585 | ||
586 | if (ret < 0) | |
587 | goto out; | |
588 | ||
589 | *offset += ret; | |
590 | total_count += ret; | |
591 | amt_complete = ret; | |
592 | ||
593 | gossip_debug(GOSSIP_FILE_DEBUG, | |
594 | "%s(%pU): AFTER wait_for_io: offset is %d\n", | |
595 | __func__, | |
596 | handle, | |
597 | (int)*offset); | |
598 | ||
599 | /* | |
600 | * if we got a short I/O operations, | |
601 | * fall out and return what we got so far | |
602 | */ | |
603 | if (amt_complete < each_count) | |
604 | break; | |
605 | } /*end while */ | |
606 | ||
607 | out: | |
608 | if (total_count > 0) | |
609 | ret = total_count; | |
610 | if (ret > 0) { | |
611 | if (type == ORANGEFS_IO_READ) { | |
612 | file_accessed(file); | |
613 | } else { | |
614 | file_update_time(file); | |
615 | if (*offset > i_size_read(inode)) | |
616 | i_size_write(inode, *offset); | |
617 | } | |
618 | } | |
619 | ||
620 | gossip_debug(GOSSIP_FILE_DEBUG, | |
621 | "%s(%pU): Value(%d) returned.\n", | |
622 | __func__, | |
623 | handle, | |
624 | (int)ret); | |
625 | ||
626 | return ret; | |
3903f150 | 627 | } |
5db11c21 | 628 | |
8bb8aefd | 629 | /** ORANGEFS2 implementation of address space operations */ |
bdd6f083 | 630 | static const struct address_space_operations orangefs_address_operations = { |
85ac799c | 631 | .writepage = orangefs_writepage, |
0c4b7cad | 632 | .readahead = orangefs_readahead, |
1a641788 | 633 | .read_folio = orangefs_read_folio, |
8f04e1be | 634 | .writepages = orangefs_writepages, |
187c82cb | 635 | .dirty_folio = filemap_dirty_folio, |
52e2d0a3 | 636 | .write_begin = orangefs_write_begin, |
85ac799c | 637 | .write_end = orangefs_write_end, |
2a40be81 | 638 | .invalidate_folio = orangefs_invalidate_folio, |
4993474a | 639 | .release_folio = orangefs_release_folio, |
c78ac80e | 640 | .free_folio = orangefs_free_folio, |
eabf038f | 641 | .launder_folio = orangefs_launder_folio, |
3903f150 | 642 | .direct_IO = orangefs_direct_IO, |
5db11c21 MM |
643 | }; |
644 | ||
52e2d0a3 MB |
645 | vm_fault_t orangefs_page_mkwrite(struct vm_fault *vmf) |
646 | { | |
eabf038f | 647 | struct folio *folio = page_folio(vmf->page); |
52e2d0a3 | 648 | struct inode *inode = file_inode(vmf->vma->vm_file); |
8f04e1be MB |
649 | struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); |
650 | unsigned long *bitlock = &orangefs_inode->bitlock; | |
651 | vm_fault_t ret; | |
52e2d0a3 MB |
652 | struct orangefs_write_range *wr; |
653 | ||
8f04e1be MB |
654 | sb_start_pagefault(inode->i_sb); |
655 | ||
656 | if (wait_on_bit(bitlock, 1, TASK_KILLABLE)) { | |
657 | ret = VM_FAULT_RETRY; | |
658 | goto out; | |
659 | } | |
660 | ||
eabf038f MWO |
661 | folio_lock(folio); |
662 | if (folio_test_dirty(folio) && !folio_test_private(folio)) { | |
52e2d0a3 | 663 | /* |
eabf038f | 664 | * Should be impossible. If it happens, launder the folio |
52e2d0a3 MB |
665 | * since we don't know what's dirty. This will WARN in |
666 | * orangefs_writepage_locked. | |
667 | */ | |
eabf038f | 668 | if (orangefs_launder_folio(folio)) { |
8f04e1be | 669 | ret = VM_FAULT_LOCKED|VM_FAULT_RETRY; |
52e2d0a3 MB |
670 | goto out; |
671 | } | |
672 | } | |
eabf038f MWO |
673 | if (folio_test_private(folio)) { |
674 | wr = folio_get_private(folio); | |
52e2d0a3 MB |
675 | if (uid_eq(wr->uid, current_fsuid()) && |
676 | gid_eq(wr->gid, current_fsgid())) { | |
eabf038f | 677 | wr->pos = page_offset(vmf->page); |
52e2d0a3 MB |
678 | wr->len = PAGE_SIZE; |
679 | goto okay; | |
680 | } else { | |
eabf038f | 681 | if (orangefs_launder_folio(folio)) { |
8f04e1be | 682 | ret = VM_FAULT_LOCKED|VM_FAULT_RETRY; |
52e2d0a3 MB |
683 | goto out; |
684 | } | |
685 | } | |
686 | } | |
687 | wr = kmalloc(sizeof *wr, GFP_KERNEL); | |
688 | if (!wr) { | |
8f04e1be | 689 | ret = VM_FAULT_LOCKED|VM_FAULT_RETRY; |
52e2d0a3 MB |
690 | goto out; |
691 | } | |
eabf038f | 692 | wr->pos = page_offset(vmf->page); |
52e2d0a3 MB |
693 | wr->len = PAGE_SIZE; |
694 | wr->uid = current_fsuid(); | |
695 | wr->gid = current_fsgid(); | |
eabf038f | 696 | folio_attach_private(folio, wr); |
52e2d0a3 MB |
697 | okay: |
698 | ||
52e2d0a3 | 699 | file_update_time(vmf->vma->vm_file); |
eabf038f MWO |
700 | if (folio->mapping != inode->i_mapping) { |
701 | folio_unlock(folio); | |
8f04e1be | 702 | ret = VM_FAULT_LOCKED|VM_FAULT_NOPAGE; |
52e2d0a3 MB |
703 | goto out; |
704 | } | |
705 | ||
706 | /* | |
eabf038f | 707 | * We mark the folio dirty already here so that when freeze is in |
52e2d0a3 | 708 | * progress, we are guaranteed that writeback during freezing will |
eabf038f | 709 | * see the dirty folio and writeprotect it again. |
52e2d0a3 | 710 | */ |
eabf038f MWO |
711 | folio_mark_dirty(folio); |
712 | folio_wait_stable(folio); | |
8f04e1be | 713 | ret = VM_FAULT_LOCKED; |
52e2d0a3 MB |
714 | out: |
715 | sb_end_pagefault(inode->i_sb); | |
716 | return ret; | |
717 | } | |
718 | ||
8bb8aefd | 719 | static int orangefs_setattr_size(struct inode *inode, struct iattr *iattr) |
5db11c21 | 720 | { |
8bb8aefd YL |
721 | struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); |
722 | struct orangefs_kernel_op_s *new_op; | |
fecd86aa | 723 | loff_t orig_size; |
5db11c21 MM |
724 | int ret = -EINVAL; |
725 | ||
726 | gossip_debug(GOSSIP_INODE_DEBUG, | |
727 | "%s: %pU: Handle is %pU | fs_id %d | size is %llu\n", | |
728 | __func__, | |
729 | get_khandle_from_ino(inode), | |
8bb8aefd YL |
730 | &orangefs_inode->refn.khandle, |
731 | orangefs_inode->refn.fs_id, | |
5db11c21 MM |
732 | iattr->ia_size); |
733 | ||
fecd86aa | 734 | /* Ensure that we have a up to date size, so we know if it changed. */ |
8b60785c | 735 | ret = orangefs_inode_getattr(inode, ORANGEFS_GETATTR_SIZE); |
fecd86aa MB |
736 | if (ret == -ESTALE) |
737 | ret = -EIO; | |
738 | if (ret) { | |
739 | gossip_err("%s: orangefs_inode_getattr failed, ret:%d:.\n", | |
740 | __func__, ret); | |
741 | return ret; | |
742 | } | |
743 | orig_size = i_size_read(inode); | |
744 | ||
33713cd0 MB |
745 | /* This is truncate_setsize in a different order. */ |
746 | truncate_pagecache(inode, iattr->ia_size); | |
747 | i_size_write(inode, iattr->ia_size); | |
748 | if (iattr->ia_size > orig_size) | |
749 | pagecache_isize_extended(inode, orig_size, iattr->ia_size); | |
5db11c21 | 750 | |
8bb8aefd | 751 | new_op = op_alloc(ORANGEFS_VFS_OP_TRUNCATE); |
5db11c21 MM |
752 | if (!new_op) |
753 | return -ENOMEM; | |
754 | ||
8bb8aefd | 755 | new_op->upcall.req.truncate.refn = orangefs_inode->refn; |
5db11c21 MM |
756 | new_op->upcall.req.truncate.size = (__s64) iattr->ia_size; |
757 | ||
95f5f88f MM |
758 | ret = service_operation(new_op, |
759 | __func__, | |
760 | get_interruptible_flag(inode)); | |
5db11c21 MM |
761 | |
762 | /* | |
763 | * the truncate has no downcall members to retrieve, but | |
764 | * the status value tells us if it went through ok or not | |
765 | */ | |
95f5f88f | 766 | gossip_debug(GOSSIP_INODE_DEBUG, "%s: ret:%d:\n", __func__, ret); |
5db11c21 MM |
767 | |
768 | op_release(new_op); | |
769 | ||
770 | if (ret != 0) | |
771 | return ret; | |
772 | ||
f83140c1 | 773 | if (orig_size != i_size_read(inode)) |
5db11c21 | 774 | iattr->ia_valid |= ATTR_CTIME | ATTR_MTIME; |
5db11c21 MM |
775 | |
776 | return ret; | |
777 | } | |
778 | ||
afd9fb2a | 779 | int __orangefs_setattr(struct inode *inode, struct iattr *iattr) |
5db11c21 | 780 | { |
df2d7337 | 781 | int ret; |
5db11c21 | 782 | |
afd9fb2a MB |
783 | if (iattr->ia_valid & ATTR_MODE) { |
784 | if (iattr->ia_mode & (S_ISVTX)) { | |
785 | if (is_root_handle(inode)) { | |
786 | /* | |
787 | * allow sticky bit to be set on root (since | |
788 | * it shows up that way by default anyhow), | |
789 | * but don't show it to the server | |
790 | */ | |
791 | iattr->ia_mode -= S_ISVTX; | |
792 | } else { | |
793 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
794 | "User attempted to set sticky bit on non-root directory; returning EINVAL.\n"); | |
8f04e1be MB |
795 | ret = -EINVAL; |
796 | goto out; | |
afd9fb2a MB |
797 | } |
798 | } | |
799 | if (iattr->ia_mode & (S_ISUID)) { | |
800 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
801 | "Attempting to set setuid bit (not supported); returning EINVAL.\n"); | |
8f04e1be MB |
802 | ret = -EINVAL; |
803 | goto out; | |
afd9fb2a MB |
804 | } |
805 | } | |
5db11c21 | 806 | |
53950ef5 | 807 | if (iattr->ia_valid & ATTR_SIZE) { |
8bb8aefd | 808 | ret = orangefs_setattr_size(inode, iattr); |
5db11c21 MM |
809 | if (ret) |
810 | goto out; | |
811 | } | |
812 | ||
afd9fb2a MB |
813 | again: |
814 | spin_lock(&inode->i_lock); | |
815 | if (ORANGEFS_I(inode)->attr_valid) { | |
816 | if (uid_eq(ORANGEFS_I(inode)->attr_uid, current_fsuid()) && | |
817 | gid_eq(ORANGEFS_I(inode)->attr_gid, current_fsgid())) { | |
818 | ORANGEFS_I(inode)->attr_valid = iattr->ia_valid; | |
819 | } else { | |
820 | spin_unlock(&inode->i_lock); | |
821 | write_inode_now(inode, 1); | |
822 | goto again; | |
823 | } | |
824 | } else { | |
825 | ORANGEFS_I(inode)->attr_valid = iattr->ia_valid; | |
826 | ORANGEFS_I(inode)->attr_uid = current_fsuid(); | |
827 | ORANGEFS_I(inode)->attr_gid = current_fsgid(); | |
828 | } | |
2f221d6f | 829 | setattr_copy(&init_user_ns, inode, iattr); |
afd9fb2a | 830 | spin_unlock(&inode->i_lock); |
5db11c21 MM |
831 | mark_inode_dirty(inode); |
832 | ||
df2d7337 | 833 | if (iattr->ia_valid & ATTR_MODE) |
5db11c21 | 834 | /* change mod on a file that has ACLs */ |
e65ce2a5 | 835 | ret = posix_acl_chmod(&init_user_ns, inode, inode->i_mode); |
5db11c21 | 836 | |
df2d7337 | 837 | ret = 0; |
5db11c21 | 838 | out: |
afd9fb2a MB |
839 | return ret; |
840 | } | |
841 | ||
842 | /* | |
843 | * Change attributes of an object referenced by dentry. | |
844 | */ | |
549c7297 CB |
845 | int orangefs_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, |
846 | struct iattr *iattr) | |
afd9fb2a MB |
847 | { |
848 | int ret; | |
849 | gossip_debug(GOSSIP_INODE_DEBUG, "__orangefs_setattr: called on %pd\n", | |
850 | dentry); | |
2f221d6f | 851 | ret = setattr_prepare(&init_user_ns, dentry, iattr); |
afd9fb2a MB |
852 | if (ret) |
853 | goto out; | |
854 | ret = __orangefs_setattr(d_inode(dentry), iattr); | |
855 | sync_inode_metadata(d_inode(dentry), 1); | |
856 | out: | |
857 | gossip_debug(GOSSIP_INODE_DEBUG, "orangefs_setattr: returning %d\n", | |
858 | ret); | |
5db11c21 MM |
859 | return ret; |
860 | } | |
861 | ||
862 | /* | |
863 | * Obtain attributes of an object given a dentry | |
864 | */ | |
549c7297 CB |
865 | int orangefs_getattr(struct user_namespace *mnt_userns, const struct path *path, |
866 | struct kstat *stat, u32 request_mask, unsigned int flags) | |
5db11c21 | 867 | { |
e6b998ab | 868 | int ret; |
a528d35e | 869 | struct inode *inode = path->dentry->d_inode; |
5db11c21 MM |
870 | |
871 | gossip_debug(GOSSIP_INODE_DEBUG, | |
5e4f606e MB |
872 | "orangefs_getattr: called on %pd mask %u\n", |
873 | path->dentry, request_mask); | |
5db11c21 | 874 | |
8b60785c MB |
875 | ret = orangefs_inode_getattr(inode, |
876 | request_mask & STATX_SIZE ? ORANGEFS_GETATTR_SIZE : 0); | |
5db11c21 | 877 | if (ret == 0) { |
0d56a451 | 878 | generic_fillattr(&init_user_ns, inode, stat); |
a7d3e78a | 879 | |
5db11c21 | 880 | /* override block size reported to stat */ |
5678b5d6 CH |
881 | if (!(request_mask & STATX_SIZE)) |
882 | stat->result_mask &= ~STATX_SIZE; | |
7f54910f | 883 | |
4f911138 | 884 | generic_fill_statx_attr(inode, stat); |
5db11c21 MM |
885 | } |
886 | return ret; | |
887 | } | |
888 | ||
549c7297 CB |
889 | int orangefs_permission(struct user_namespace *mnt_userns, |
890 | struct inode *inode, int mask) | |
933287da MB |
891 | { |
892 | int ret; | |
893 | ||
894 | if (mask & MAY_NOT_BLOCK) | |
895 | return -ECHILD; | |
896 | ||
897 | gossip_debug(GOSSIP_INODE_DEBUG, "%s: refreshing\n", __func__); | |
898 | ||
899 | /* Make sure the permission (and other common attrs) are up to date. */ | |
8b60785c | 900 | ret = orangefs_inode_getattr(inode, 0); |
933287da MB |
901 | if (ret < 0) |
902 | return ret; | |
903 | ||
47291baa | 904 | return generic_permission(&init_user_ns, inode, mask); |
933287da MB |
905 | } |
906 | ||
95582b00 | 907 | int orangefs_update_time(struct inode *inode, struct timespec64 *time, int flags) |
a55f2d86 MB |
908 | { |
909 | struct iattr iattr; | |
910 | gossip_debug(GOSSIP_INODE_DEBUG, "orangefs_update_time: %pU\n", | |
911 | get_khandle_from_ino(inode)); | |
912 | generic_update_time(inode, time, flags); | |
913 | memset(&iattr, 0, sizeof iattr); | |
914 | if (flags & S_ATIME) | |
915 | iattr.ia_valid |= ATTR_ATIME; | |
916 | if (flags & S_CTIME) | |
917 | iattr.ia_valid |= ATTR_CTIME; | |
918 | if (flags & S_MTIME) | |
919 | iattr.ia_valid |= ATTR_MTIME; | |
afd9fb2a | 920 | return __orangefs_setattr(inode, &iattr); |
a55f2d86 MB |
921 | } |
922 | ||
1f26b062 MS |
923 | static int orangefs_fileattr_get(struct dentry *dentry, struct fileattr *fa) |
924 | { | |
925 | u64 val = 0; | |
926 | int ret; | |
927 | ||
928 | gossip_debug(GOSSIP_FILE_DEBUG, "%s: called on %pd\n", __func__, | |
929 | dentry); | |
930 | ||
931 | ret = orangefs_inode_getxattr(d_inode(dentry), | |
932 | "user.pvfs2.meta_hint", | |
933 | &val, sizeof(val)); | |
934 | if (ret < 0 && ret != -ENODATA) | |
935 | return ret; | |
936 | ||
937 | gossip_debug(GOSSIP_FILE_DEBUG, "%s: flags=%u\n", __func__, (u32) val); | |
938 | ||
939 | fileattr_fill_flags(fa, val); | |
940 | return 0; | |
941 | } | |
942 | ||
943 | static int orangefs_fileattr_set(struct user_namespace *mnt_userns, | |
944 | struct dentry *dentry, struct fileattr *fa) | |
945 | { | |
946 | u64 val = 0; | |
947 | ||
948 | gossip_debug(GOSSIP_FILE_DEBUG, "%s: called on %pd\n", __func__, | |
949 | dentry); | |
950 | /* | |
951 | * ORANGEFS_MIRROR_FL is set internally when the mirroring mode is | |
952 | * turned on for a file. The user is not allowed to turn on this bit, | |
953 | * but the bit is present if the user first gets the flags and then | |
954 | * updates the flags with some new settings. So, we ignore it in the | |
955 | * following edit. bligon. | |
956 | */ | |
957 | if (fileattr_has_fsx(fa) || | |
958 | (fa->flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | FS_NOATIME_FL | ORANGEFS_MIRROR_FL))) { | |
959 | gossip_err("%s: only supports setting one of FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NOATIME_FL\n", | |
960 | __func__); | |
961 | return -EOPNOTSUPP; | |
962 | } | |
963 | val = fa->flags; | |
964 | gossip_debug(GOSSIP_FILE_DEBUG, "%s: flags=%u\n", __func__, (u32) val); | |
965 | return orangefs_inode_setxattr(d_inode(dentry), | |
966 | "user.pvfs2.meta_hint", | |
967 | &val, sizeof(val), 0); | |
968 | } | |
969 | ||
95f5f88f | 970 | /* ORANGEFS2 implementation of VFS inode operations for files */ |
bdd6f083 | 971 | static const struct inode_operations orangefs_file_inode_operations = { |
8bb8aefd YL |
972 | .get_acl = orangefs_get_acl, |
973 | .set_acl = orangefs_set_acl, | |
974 | .setattr = orangefs_setattr, | |
975 | .getattr = orangefs_getattr, | |
8bb8aefd | 976 | .listxattr = orangefs_listxattr, |
933287da | 977 | .permission = orangefs_permission, |
a55f2d86 | 978 | .update_time = orangefs_update_time, |
1f26b062 MS |
979 | .fileattr_get = orangefs_fileattr_get, |
980 | .fileattr_set = orangefs_fileattr_set, | |
5db11c21 MM |
981 | }; |
982 | ||
8bb8aefd | 983 | static int orangefs_init_iops(struct inode *inode) |
5db11c21 | 984 | { |
8bb8aefd | 985 | inode->i_mapping->a_ops = &orangefs_address_operations; |
5db11c21 MM |
986 | |
987 | switch (inode->i_mode & S_IFMT) { | |
988 | case S_IFREG: | |
8bb8aefd YL |
989 | inode->i_op = &orangefs_file_inode_operations; |
990 | inode->i_fop = &orangefs_file_operations; | |
5db11c21 MM |
991 | break; |
992 | case S_IFLNK: | |
8bb8aefd | 993 | inode->i_op = &orangefs_symlink_inode_operations; |
5db11c21 MM |
994 | break; |
995 | case S_IFDIR: | |
8bb8aefd YL |
996 | inode->i_op = &orangefs_dir_inode_operations; |
997 | inode->i_fop = &orangefs_dir_operations; | |
5db11c21 MM |
998 | break; |
999 | default: | |
1000 | gossip_debug(GOSSIP_INODE_DEBUG, | |
1001 | "%s: unsupported mode\n", | |
1002 | __func__); | |
1003 | return -EINVAL; | |
1004 | } | |
1005 | ||
1006 | return 0; | |
1007 | } | |
1008 | ||
1009 | /* | |
95f5f88f MM |
1010 | * Given an ORANGEFS object identifier (fsid, handle), convert it into |
1011 | * a ino_t type that will be used as a hash-index from where the handle will | |
5db11c21 MM |
1012 | * be searched for in the VFS hash table of inodes. |
1013 | */ | |
8bb8aefd | 1014 | static inline ino_t orangefs_handle_hash(struct orangefs_object_kref *ref) |
5db11c21 MM |
1015 | { |
1016 | if (!ref) | |
1017 | return 0; | |
8bb8aefd | 1018 | return orangefs_khandle_to_ino(&(ref->khandle)); |
5db11c21 MM |
1019 | } |
1020 | ||
1021 | /* | |
1022 | * Called to set up an inode from iget5_locked. | |
1023 | */ | |
8bb8aefd | 1024 | static int orangefs_set_inode(struct inode *inode, void *data) |
5db11c21 | 1025 | { |
8bb8aefd | 1026 | struct orangefs_object_kref *ref = (struct orangefs_object_kref *) data; |
a4c680a0 MB |
1027 | ORANGEFS_I(inode)->refn.fs_id = ref->fs_id; |
1028 | ORANGEFS_I(inode)->refn.khandle = ref->khandle; | |
afd9fb2a | 1029 | ORANGEFS_I(inode)->attr_valid = 0; |
fc2e2e9c | 1030 | hash_init(ORANGEFS_I(inode)->xattr_cache); |
8f04e1be MB |
1031 | ORANGEFS_I(inode)->mapping_time = jiffies - 1; |
1032 | ORANGEFS_I(inode)->bitlock = 0; | |
5db11c21 MM |
1033 | return 0; |
1034 | } | |
1035 | ||
1036 | /* | |
1037 | * Called to determine if handles match. | |
1038 | */ | |
8bb8aefd | 1039 | static int orangefs_test_inode(struct inode *inode, void *data) |
5db11c21 | 1040 | { |
8bb8aefd YL |
1041 | struct orangefs_object_kref *ref = (struct orangefs_object_kref *) data; |
1042 | struct orangefs_inode_s *orangefs_inode = NULL; | |
5db11c21 | 1043 | |
8bb8aefd | 1044 | orangefs_inode = ORANGEFS_I(inode); |
95f5f88f MM |
1045 | /* test handles and fs_ids... */ |
1046 | return (!ORANGEFS_khandle_cmp(&(orangefs_inode->refn.khandle), | |
1047 | &(ref->khandle)) && | |
1048 | orangefs_inode->refn.fs_id == ref->fs_id); | |
5db11c21 MM |
1049 | } |
1050 | ||
1051 | /* | |
8bb8aefd | 1052 | * Front-end to lookup the inode-cache maintained by the VFS using the ORANGEFS |
5db11c21 MM |
1053 | * file handle. |
1054 | * | |
1055 | * @sb: the file system super block instance. | |
95f5f88f | 1056 | * @ref: The ORANGEFS object for which we are trying to locate an inode. |
5db11c21 | 1057 | */ |
95f5f88f MM |
1058 | struct inode *orangefs_iget(struct super_block *sb, |
1059 | struct orangefs_object_kref *ref) | |
5db11c21 MM |
1060 | { |
1061 | struct inode *inode = NULL; | |
1062 | unsigned long hash; | |
1063 | int error; | |
1064 | ||
8bb8aefd | 1065 | hash = orangefs_handle_hash(ref); |
95f5f88f MM |
1066 | inode = iget5_locked(sb, |
1067 | hash, | |
1068 | orangefs_test_inode, | |
1069 | orangefs_set_inode, | |
1070 | ref); | |
b5d72cdc MM |
1071 | |
1072 | if (!inode) | |
1073 | return ERR_PTR(-ENOMEM); | |
1074 | ||
1075 | if (!(inode->i_state & I_NEW)) | |
5db11c21 MM |
1076 | return inode; |
1077 | ||
8b60785c | 1078 | error = orangefs_inode_getattr(inode, ORANGEFS_GETATTR_NEW); |
5db11c21 MM |
1079 | if (error) { |
1080 | iget_failed(inode); | |
1081 | return ERR_PTR(error); | |
1082 | } | |
1083 | ||
1084 | inode->i_ino = hash; /* needed for stat etc */ | |
8bb8aefd | 1085 | orangefs_init_iops(inode); |
5db11c21 MM |
1086 | unlock_new_inode(inode); |
1087 | ||
1088 | gossip_debug(GOSSIP_INODE_DEBUG, | |
1089 | "iget handle %pU, fsid %d hash %ld i_ino %lu\n", | |
1090 | &ref->khandle, | |
1091 | ref->fs_id, | |
1092 | hash, | |
1093 | inode->i_ino); | |
1094 | ||
1095 | return inode; | |
1096 | } | |
1097 | ||
1098 | /* | |
1099 | * Allocate an inode for a newly created file and insert it into the inode hash. | |
1100 | */ | |
8bb8aefd YL |
1101 | struct inode *orangefs_new_inode(struct super_block *sb, struct inode *dir, |
1102 | int mode, dev_t dev, struct orangefs_object_kref *ref) | |
5db11c21 | 1103 | { |
8bb8aefd | 1104 | unsigned long hash = orangefs_handle_hash(ref); |
5db11c21 MM |
1105 | struct inode *inode; |
1106 | int error; | |
1107 | ||
1108 | gossip_debug(GOSSIP_INODE_DEBUG, | |
5253487e MM |
1109 | "%s:(sb is %p | MAJOR(dev)=%u | MINOR(dev)=%u mode=%o)\n", |
1110 | __func__, | |
5db11c21 MM |
1111 | sb, |
1112 | MAJOR(dev), | |
1113 | MINOR(dev), | |
1114 | mode); | |
1115 | ||
1116 | inode = new_inode(sb); | |
1117 | if (!inode) | |
56249998 | 1118 | return ERR_PTR(-ENOMEM); |
5db11c21 | 1119 | |
8bb8aefd | 1120 | orangefs_set_inode(inode, ref); |
5db11c21 MM |
1121 | inode->i_ino = hash; /* needed for stat etc */ |
1122 | ||
8b60785c | 1123 | error = orangefs_inode_getattr(inode, ORANGEFS_GETATTR_NEW); |
5db11c21 MM |
1124 | if (error) |
1125 | goto out_iput; | |
1126 | ||
8bb8aefd | 1127 | orangefs_init_iops(inode); |
5db11c21 MM |
1128 | inode->i_rdev = dev; |
1129 | ||
8bb8aefd | 1130 | error = insert_inode_locked4(inode, hash, orangefs_test_inode, ref); |
5db11c21 MM |
1131 | if (error < 0) |
1132 | goto out_iput; | |
1133 | ||
1134 | gossip_debug(GOSSIP_INODE_DEBUG, | |
1135 | "Initializing ACL's for inode %pU\n", | |
1136 | get_khandle_from_ino(inode)); | |
8bb8aefd | 1137 | orangefs_init_acl(inode, dir); |
5db11c21 MM |
1138 | return inode; |
1139 | ||
1140 | out_iput: | |
1141 | iput(inode); | |
1142 | return ERR_PTR(error); | |
1143 | } |