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 | ||
2f8b5444 | 13 | #include <linux/bvec.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 | } |
52e2d0a3 MB |
49 | /* Should've been handled in orangefs_invalidatepage. */ |
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 | ||
dd59a647 MM |
246 | static int orangefs_launder_page(struct page *); |
247 | ||
a68d9c60 | 248 | static int orangefs_readpage(struct file *file, struct page *page) |
5db11c21 | 249 | { |
5db11c21 | 250 | struct inode *inode = page->mapping->host; |
c453dcfc MB |
251 | struct iov_iter iter; |
252 | struct bio_vec bv; | |
253 | ssize_t ret; | |
dd59a647 MM |
254 | loff_t off; /* offset into this page */ |
255 | pgoff_t index; /* which page */ | |
256 | struct page *next_page; | |
257 | char *kaddr; | |
dd59a647 | 258 | loff_t read_size; |
dd59a647 MM |
259 | int buffer_index = -1; /* orangefs shared memory slot */ |
260 | int slot_index; /* index into slot */ | |
261 | int remaining; | |
262 | ||
263 | /* | |
ec95f1de MM |
264 | * Get up to this many bytes from Orangefs at a time and try |
265 | * to fill them into the page cache at once. Tests with dd made | |
266 | * this seem like a reasonable static number, if there was | |
267 | * interest perhaps this number could be made setable through | |
268 | * sysfs... | |
dd59a647 | 269 | */ |
ec95f1de | 270 | read_size = 524288; |
dd59a647 MM |
271 | |
272 | if (PageDirty(page)) | |
273 | orangefs_launder_page(page); | |
c453dcfc MB |
274 | |
275 | off = page_offset(page); | |
dd59a647 | 276 | index = off >> PAGE_SHIFT; |
c453dcfc MB |
277 | bv.bv_page = page; |
278 | bv.bv_len = PAGE_SIZE; | |
279 | bv.bv_offset = 0; | |
280 | iov_iter_bvec(&iter, READ, &bv, 1, PAGE_SIZE); | |
281 | ||
282 | ret = wait_for_direct_io(ORANGEFS_IO_READ, inode, &off, &iter, | |
f9bbb682 | 283 | read_size, inode->i_size, NULL, &buffer_index, file); |
dd59a647 | 284 | remaining = ret; |
74f68fce | 285 | /* this will only zero remaining unread portions of the page data */ |
c453dcfc | 286 | iov_iter_zero(~0U, &iter); |
5db11c21 MM |
287 | /* takes care of potential aliasing */ |
288 | flush_dcache_page(page); | |
c453dcfc | 289 | if (ret < 0) { |
5db11c21 | 290 | SetPageError(page); |
dd59a647 MM |
291 | unlock_page(page); |
292 | goto out; | |
5db11c21 MM |
293 | } else { |
294 | SetPageUptodate(page); | |
295 | if (PageError(page)) | |
296 | ClearPageError(page); | |
297 | ret = 0; | |
298 | } | |
5db11c21 MM |
299 | /* unlock the page after the ->readpage() routine completes */ |
300 | unlock_page(page); | |
dd59a647 MM |
301 | |
302 | if (remaining > PAGE_SIZE) { | |
303 | slot_index = 0; | |
304 | while ((remaining - PAGE_SIZE) >= PAGE_SIZE) { | |
305 | remaining -= PAGE_SIZE; | |
306 | /* | |
307 | * It is an optimization to try and fill more than one | |
308 | * page... by now we've already gotten the single | |
309 | * page we were after, if stuff doesn't seem to | |
310 | * be going our way at this point just return | |
311 | * and hope for the best. | |
312 | * | |
313 | * If we look for pages and they're already there is | |
314 | * one reason to give up, and if they're not there | |
315 | * and we can't create them is another reason. | |
316 | */ | |
317 | ||
318 | index++; | |
319 | slot_index++; | |
320 | next_page = find_get_page(inode->i_mapping, index); | |
321 | if (next_page) { | |
322 | gossip_debug(GOSSIP_FILE_DEBUG, | |
323 | "%s: found next page, quitting\n", | |
324 | __func__); | |
325 | put_page(next_page); | |
326 | goto out; | |
327 | } | |
328 | next_page = find_or_create_page(inode->i_mapping, | |
329 | index, | |
330 | GFP_KERNEL); | |
331 | /* | |
332 | * I've never hit this, leave it as a printk for | |
333 | * now so it will be obvious. | |
334 | */ | |
335 | if (!next_page) { | |
336 | printk("%s: can't create next page, quitting\n", | |
337 | __func__); | |
338 | goto out; | |
339 | } | |
340 | kaddr = kmap_atomic(next_page); | |
341 | orangefs_bufmap_page_fill(kaddr, | |
342 | buffer_index, | |
343 | slot_index); | |
344 | kunmap_atomic(kaddr); | |
345 | SetPageUptodate(next_page); | |
346 | unlock_page(next_page); | |
347 | put_page(next_page); | |
348 | } | |
349 | } | |
350 | ||
351 | out: | |
352 | if (buffer_index != -1) | |
353 | orangefs_bufmap_put(buffer_index); | |
5db11c21 MM |
354 | return ret; |
355 | } | |
356 | ||
52e2d0a3 MB |
357 | static int orangefs_write_begin(struct file *file, |
358 | struct address_space *mapping, | |
359 | loff_t pos, unsigned len, unsigned flags, struct page **pagep, | |
360 | void **fsdata) | |
361 | { | |
362 | struct orangefs_write_range *wr; | |
363 | struct page *page; | |
364 | pgoff_t index; | |
365 | int ret; | |
366 | ||
367 | index = pos >> PAGE_SHIFT; | |
368 | ||
369 | page = grab_cache_page_write_begin(mapping, index, flags); | |
370 | if (!page) | |
371 | return -ENOMEM; | |
372 | ||
373 | *pagep = page; | |
374 | ||
375 | if (PageDirty(page) && !PagePrivate(page)) { | |
376 | /* | |
377 | * Should be impossible. If it happens, launder the page | |
378 | * since we don't know what's dirty. This will WARN in | |
379 | * orangefs_writepage_locked. | |
380 | */ | |
381 | ret = orangefs_launder_page(page); | |
382 | if (ret) | |
383 | return ret; | |
384 | } | |
385 | if (PagePrivate(page)) { | |
386 | struct orangefs_write_range *wr; | |
387 | wr = (struct orangefs_write_range *)page_private(page); | |
388 | if (wr->pos + wr->len == pos && | |
389 | uid_eq(wr->uid, current_fsuid()) && | |
390 | gid_eq(wr->gid, current_fsgid())) { | |
391 | wr->len += len; | |
392 | goto okay; | |
393 | } else { | |
394 | ret = orangefs_launder_page(page); | |
395 | if (ret) | |
396 | return ret; | |
397 | } | |
52e2d0a3 MB |
398 | } |
399 | ||
400 | wr = kmalloc(sizeof *wr, GFP_KERNEL); | |
401 | if (!wr) | |
402 | return -ENOMEM; | |
403 | ||
404 | wr->pos = pos; | |
405 | wr->len = len; | |
406 | wr->uid = current_fsuid(); | |
407 | wr->gid = current_fsgid(); | |
4c42be38 | 408 | attach_page_private(page, wr); |
52e2d0a3 | 409 | okay: |
52e2d0a3 MB |
410 | return 0; |
411 | } | |
412 | ||
85ac799c MB |
413 | static int orangefs_write_end(struct file *file, struct address_space *mapping, |
414 | loff_t pos, unsigned len, unsigned copied, struct page *page, void *fsdata) | |
415 | { | |
8f04e1be MB |
416 | struct inode *inode = page->mapping->host; |
417 | loff_t last_pos = pos + copied; | |
418 | ||
419 | /* | |
420 | * No need to use i_size_read() here, the i_size | |
421 | * cannot change under us because we hold the i_mutex. | |
422 | */ | |
423 | if (last_pos > inode->i_size) | |
424 | i_size_write(inode, last_pos); | |
425 | ||
426 | /* zero the stale part of the page if we did a short copy */ | |
427 | if (!PageUptodate(page)) { | |
428 | unsigned from = pos & (PAGE_SIZE - 1); | |
429 | if (copied < len) { | |
430 | zero_user(page, from + copied, len - copied); | |
431 | } | |
432 | /* Set fully written pages uptodate. */ | |
433 | if (pos == page_offset(page) && | |
434 | (len == PAGE_SIZE || pos + len == inode->i_size)) { | |
435 | zero_user_segment(page, from + copied, PAGE_SIZE); | |
436 | SetPageUptodate(page); | |
437 | } | |
438 | } | |
439 | ||
440 | set_page_dirty(page); | |
441 | unlock_page(page); | |
442 | put_page(page); | |
443 | ||
85ac799c | 444 | mark_inode_dirty_sync(file_inode(file)); |
8f04e1be | 445 | return copied; |
85ac799c MB |
446 | } |
447 | ||
8bb8aefd | 448 | static void orangefs_invalidatepage(struct page *page, |
5db11c21 MM |
449 | unsigned int offset, |
450 | unsigned int length) | |
451 | { | |
52e2d0a3 MB |
452 | struct orangefs_write_range *wr; |
453 | wr = (struct orangefs_write_range *)page_private(page); | |
454 | ||
455 | if (offset == 0 && length == PAGE_SIZE) { | |
4c42be38 | 456 | kfree(detach_page_private(page)); |
8f04e1be | 457 | return; |
52e2d0a3 MB |
458 | /* write range entirely within invalidate range (or equal) */ |
459 | } else if (page_offset(page) + offset <= wr->pos && | |
460 | wr->pos + wr->len <= page_offset(page) + offset + length) { | |
4c42be38 | 461 | kfree(detach_page_private(page)); |
52e2d0a3 MB |
462 | /* XXX is this right? only caller in fs */ |
463 | cancel_dirty_page(page); | |
8f04e1be | 464 | return; |
52e2d0a3 MB |
465 | /* invalidate range chops off end of write range */ |
466 | } else if (wr->pos < page_offset(page) + offset && | |
467 | wr->pos + wr->len <= page_offset(page) + offset + length && | |
468 | page_offset(page) + offset < wr->pos + wr->len) { | |
469 | size_t x; | |
470 | x = wr->pos + wr->len - (page_offset(page) + offset); | |
471 | WARN_ON(x > wr->len); | |
472 | wr->len -= x; | |
473 | wr->uid = current_fsuid(); | |
474 | wr->gid = current_fsgid(); | |
475 | /* invalidate range chops off beginning of write range */ | |
476 | } else if (page_offset(page) + offset <= wr->pos && | |
477 | page_offset(page) + offset + length < wr->pos + wr->len && | |
478 | wr->pos < page_offset(page) + offset + length) { | |
479 | size_t x; | |
480 | x = page_offset(page) + offset + length - wr->pos; | |
481 | WARN_ON(x > wr->len); | |
482 | wr->pos += x; | |
483 | wr->len -= x; | |
484 | wr->uid = current_fsuid(); | |
485 | wr->gid = current_fsgid(); | |
486 | /* invalidate range entirely within write range (punch hole) */ | |
487 | } else if (wr->pos < page_offset(page) + offset && | |
488 | page_offset(page) + offset + length < wr->pos + wr->len) { | |
489 | /* XXX what do we do here... should not WARN_ON */ | |
490 | WARN_ON(1); | |
491 | /* punch hole */ | |
492 | /* | |
493 | * should we just ignore this and write it out anyway? | |
494 | * it hardly makes sense | |
495 | */ | |
8f04e1be | 496 | return; |
52e2d0a3 MB |
497 | /* non-overlapping ranges */ |
498 | } else { | |
499 | /* WARN if they do overlap */ | |
500 | if (!((page_offset(page) + offset + length <= wr->pos) ^ | |
501 | (wr->pos + wr->len <= page_offset(page) + offset))) { | |
502 | WARN_ON(1); | |
503 | printk("invalidate range offset %llu length %u\n", | |
504 | page_offset(page) + offset, length); | |
505 | printk("write range offset %llu length %zu\n", | |
506 | wr->pos, wr->len); | |
507 | } | |
8f04e1be | 508 | return; |
52e2d0a3 | 509 | } |
8f04e1be MB |
510 | |
511 | /* | |
512 | * Above there are returns where wr is freed or where we WARN. | |
513 | * Thus the following runs if wr was modified above. | |
514 | */ | |
515 | ||
516 | orangefs_launder_page(page); | |
52e2d0a3 | 517 | } |
5db11c21 | 518 | |
52e2d0a3 MB |
519 | static int orangefs_releasepage(struct page *page, gfp_t foo) |
520 | { | |
521 | return !PagePrivate(page); | |
522 | } | |
5db11c21 | 523 | |
52e2d0a3 MB |
524 | static void orangefs_freepage(struct page *page) |
525 | { | |
4c42be38 | 526 | kfree(detach_page_private(page)); |
5db11c21 MM |
527 | } |
528 | ||
52e2d0a3 | 529 | static int orangefs_launder_page(struct page *page) |
5db11c21 | 530 | { |
52e2d0a3 MB |
531 | int r = 0; |
532 | struct writeback_control wbc = { | |
533 | .sync_mode = WB_SYNC_ALL, | |
534 | .nr_to_write = 0, | |
535 | }; | |
536 | wait_on_page_writeback(page); | |
537 | if (clear_page_dirty_for_io(page)) { | |
538 | r = orangefs_writepage_locked(page, &wbc); | |
539 | end_page_writeback(page); | |
540 | } | |
541 | return r; | |
5db11c21 MM |
542 | } |
543 | ||
3903f150 MM |
544 | static ssize_t orangefs_direct_IO(struct kiocb *iocb, |
545 | struct iov_iter *iter) | |
546 | { | |
3e9dfc6e MB |
547 | /* |
548 | * Comment from original do_readv_writev: | |
549 | * Common entry point for read/write/readv/writev | |
550 | * This function will dispatch it to either the direct I/O | |
551 | * or buffered I/O path depending on the mount options and/or | |
552 | * augmented/extended metadata attached to the file. | |
553 | * Note: File extended attributes override any mount options. | |
554 | */ | |
c453dcfc | 555 | struct file *file = iocb->ki_filp; |
3e9dfc6e MB |
556 | loff_t pos = iocb->ki_pos; |
557 | enum ORANGEFS_io_type type = iov_iter_rw(iter) == WRITE ? | |
558 | ORANGEFS_IO_WRITE : ORANGEFS_IO_READ; | |
559 | loff_t *offset = &pos; | |
560 | struct inode *inode = file->f_mapping->host; | |
561 | struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); | |
562 | struct orangefs_khandle *handle = &orangefs_inode->refn.khandle; | |
563 | size_t count = iov_iter_count(iter); | |
3e9dfc6e MB |
564 | ssize_t total_count = 0; |
565 | ssize_t ret = -EINVAL; | |
566 | int i = 0; | |
567 | ||
568 | gossip_debug(GOSSIP_FILE_DEBUG, | |
569 | "%s-BEGIN(%pU): count(%d) after estimate_max_iovecs.\n", | |
570 | __func__, | |
571 | handle, | |
572 | (int)count); | |
573 | ||
574 | if (type == ORANGEFS_IO_WRITE) { | |
575 | gossip_debug(GOSSIP_FILE_DEBUG, | |
576 | "%s(%pU): proceeding with offset : %llu, " | |
577 | "size %d\n", | |
578 | __func__, | |
579 | handle, | |
580 | llu(*offset), | |
581 | (int)count); | |
582 | } | |
583 | ||
584 | if (count == 0) { | |
585 | ret = 0; | |
586 | goto out; | |
587 | } | |
588 | ||
589 | while (iov_iter_count(iter)) { | |
590 | size_t each_count = iov_iter_count(iter); | |
591 | size_t amt_complete; | |
592 | i++; | |
593 | ||
594 | /* how much to transfer in this loop iteration */ | |
595 | if (each_count > orangefs_bufmap_size_query()) | |
596 | each_count = orangefs_bufmap_size_query(); | |
597 | ||
598 | gossip_debug(GOSSIP_FILE_DEBUG, | |
599 | "%s(%pU): size of each_count(%d)\n", | |
600 | __func__, | |
601 | handle, | |
602 | (int)each_count); | |
603 | gossip_debug(GOSSIP_FILE_DEBUG, | |
604 | "%s(%pU): BEFORE wait_for_io: offset is %d\n", | |
605 | __func__, | |
606 | handle, | |
607 | (int)*offset); | |
608 | ||
609 | ret = wait_for_direct_io(type, inode, offset, iter, | |
f9bbb682 | 610 | each_count, 0, NULL, NULL, file); |
3e9dfc6e MB |
611 | gossip_debug(GOSSIP_FILE_DEBUG, |
612 | "%s(%pU): return from wait_for_io:%d\n", | |
613 | __func__, | |
614 | handle, | |
615 | (int)ret); | |
616 | ||
617 | if (ret < 0) | |
618 | goto out; | |
619 | ||
620 | *offset += ret; | |
621 | total_count += ret; | |
622 | amt_complete = ret; | |
623 | ||
624 | gossip_debug(GOSSIP_FILE_DEBUG, | |
625 | "%s(%pU): AFTER wait_for_io: offset is %d\n", | |
626 | __func__, | |
627 | handle, | |
628 | (int)*offset); | |
629 | ||
630 | /* | |
631 | * if we got a short I/O operations, | |
632 | * fall out and return what we got so far | |
633 | */ | |
634 | if (amt_complete < each_count) | |
635 | break; | |
636 | } /*end while */ | |
637 | ||
638 | out: | |
639 | if (total_count > 0) | |
640 | ret = total_count; | |
641 | if (ret > 0) { | |
642 | if (type == ORANGEFS_IO_READ) { | |
643 | file_accessed(file); | |
644 | } else { | |
645 | file_update_time(file); | |
646 | if (*offset > i_size_read(inode)) | |
647 | i_size_write(inode, *offset); | |
648 | } | |
649 | } | |
650 | ||
651 | gossip_debug(GOSSIP_FILE_DEBUG, | |
652 | "%s(%pU): Value(%d) returned.\n", | |
653 | __func__, | |
654 | handle, | |
655 | (int)ret); | |
656 | ||
657 | return ret; | |
3903f150 | 658 | } |
5db11c21 | 659 | |
8bb8aefd | 660 | /** ORANGEFS2 implementation of address space operations */ |
bdd6f083 | 661 | static const struct address_space_operations orangefs_address_operations = { |
85ac799c | 662 | .writepage = orangefs_writepage, |
8bb8aefd | 663 | .readpage = orangefs_readpage, |
8f04e1be | 664 | .writepages = orangefs_writepages, |
85ac799c | 665 | .set_page_dirty = __set_page_dirty_nobuffers, |
52e2d0a3 | 666 | .write_begin = orangefs_write_begin, |
85ac799c | 667 | .write_end = orangefs_write_end, |
8bb8aefd YL |
668 | .invalidatepage = orangefs_invalidatepage, |
669 | .releasepage = orangefs_releasepage, | |
52e2d0a3 MB |
670 | .freepage = orangefs_freepage, |
671 | .launder_page = orangefs_launder_page, | |
3903f150 | 672 | .direct_IO = orangefs_direct_IO, |
5db11c21 MM |
673 | }; |
674 | ||
52e2d0a3 MB |
675 | vm_fault_t orangefs_page_mkwrite(struct vm_fault *vmf) |
676 | { | |
677 | struct page *page = vmf->page; | |
678 | struct inode *inode = file_inode(vmf->vma->vm_file); | |
8f04e1be MB |
679 | struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); |
680 | unsigned long *bitlock = &orangefs_inode->bitlock; | |
681 | vm_fault_t ret; | |
52e2d0a3 MB |
682 | struct orangefs_write_range *wr; |
683 | ||
8f04e1be MB |
684 | sb_start_pagefault(inode->i_sb); |
685 | ||
686 | if (wait_on_bit(bitlock, 1, TASK_KILLABLE)) { | |
687 | ret = VM_FAULT_RETRY; | |
688 | goto out; | |
689 | } | |
690 | ||
52e2d0a3 MB |
691 | lock_page(page); |
692 | if (PageDirty(page) && !PagePrivate(page)) { | |
693 | /* | |
694 | * Should be impossible. If it happens, launder the page | |
695 | * since we don't know what's dirty. This will WARN in | |
696 | * orangefs_writepage_locked. | |
697 | */ | |
698 | if (orangefs_launder_page(page)) { | |
8f04e1be | 699 | ret = VM_FAULT_LOCKED|VM_FAULT_RETRY; |
52e2d0a3 MB |
700 | goto out; |
701 | } | |
702 | } | |
703 | if (PagePrivate(page)) { | |
704 | wr = (struct orangefs_write_range *)page_private(page); | |
705 | if (uid_eq(wr->uid, current_fsuid()) && | |
706 | gid_eq(wr->gid, current_fsgid())) { | |
707 | wr->pos = page_offset(page); | |
708 | wr->len = PAGE_SIZE; | |
709 | goto okay; | |
710 | } else { | |
711 | if (orangefs_launder_page(page)) { | |
8f04e1be | 712 | ret = VM_FAULT_LOCKED|VM_FAULT_RETRY; |
52e2d0a3 MB |
713 | goto out; |
714 | } | |
715 | } | |
716 | } | |
717 | wr = kmalloc(sizeof *wr, GFP_KERNEL); | |
718 | if (!wr) { | |
8f04e1be | 719 | ret = VM_FAULT_LOCKED|VM_FAULT_RETRY; |
52e2d0a3 MB |
720 | goto out; |
721 | } | |
722 | wr->pos = page_offset(page); | |
723 | wr->len = PAGE_SIZE; | |
724 | wr->uid = current_fsuid(); | |
725 | wr->gid = current_fsgid(); | |
4c42be38 | 726 | attach_page_private(page, wr); |
52e2d0a3 MB |
727 | okay: |
728 | ||
52e2d0a3 MB |
729 | file_update_time(vmf->vma->vm_file); |
730 | if (page->mapping != inode->i_mapping) { | |
731 | unlock_page(page); | |
8f04e1be | 732 | ret = VM_FAULT_LOCKED|VM_FAULT_NOPAGE; |
52e2d0a3 MB |
733 | goto out; |
734 | } | |
735 | ||
736 | /* | |
737 | * We mark the page dirty already here so that when freeze is in | |
738 | * progress, we are guaranteed that writeback during freezing will | |
739 | * see the dirty page and writeprotect it again. | |
740 | */ | |
741 | set_page_dirty(page); | |
742 | wait_for_stable_page(page); | |
8f04e1be | 743 | ret = VM_FAULT_LOCKED; |
52e2d0a3 MB |
744 | out: |
745 | sb_end_pagefault(inode->i_sb); | |
746 | return ret; | |
747 | } | |
748 | ||
8bb8aefd | 749 | static int orangefs_setattr_size(struct inode *inode, struct iattr *iattr) |
5db11c21 | 750 | { |
8bb8aefd YL |
751 | struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); |
752 | struct orangefs_kernel_op_s *new_op; | |
fecd86aa | 753 | loff_t orig_size; |
5db11c21 MM |
754 | int ret = -EINVAL; |
755 | ||
756 | gossip_debug(GOSSIP_INODE_DEBUG, | |
757 | "%s: %pU: Handle is %pU | fs_id %d | size is %llu\n", | |
758 | __func__, | |
759 | get_khandle_from_ino(inode), | |
8bb8aefd YL |
760 | &orangefs_inode->refn.khandle, |
761 | orangefs_inode->refn.fs_id, | |
5db11c21 MM |
762 | iattr->ia_size); |
763 | ||
fecd86aa | 764 | /* Ensure that we have a up to date size, so we know if it changed. */ |
8b60785c | 765 | ret = orangefs_inode_getattr(inode, ORANGEFS_GETATTR_SIZE); |
fecd86aa MB |
766 | if (ret == -ESTALE) |
767 | ret = -EIO; | |
768 | if (ret) { | |
769 | gossip_err("%s: orangefs_inode_getattr failed, ret:%d:.\n", | |
770 | __func__, ret); | |
771 | return ret; | |
772 | } | |
773 | orig_size = i_size_read(inode); | |
774 | ||
33713cd0 MB |
775 | /* This is truncate_setsize in a different order. */ |
776 | truncate_pagecache(inode, iattr->ia_size); | |
777 | i_size_write(inode, iattr->ia_size); | |
778 | if (iattr->ia_size > orig_size) | |
779 | pagecache_isize_extended(inode, orig_size, iattr->ia_size); | |
5db11c21 | 780 | |
8bb8aefd | 781 | new_op = op_alloc(ORANGEFS_VFS_OP_TRUNCATE); |
5db11c21 MM |
782 | if (!new_op) |
783 | return -ENOMEM; | |
784 | ||
8bb8aefd | 785 | new_op->upcall.req.truncate.refn = orangefs_inode->refn; |
5db11c21 MM |
786 | new_op->upcall.req.truncate.size = (__s64) iattr->ia_size; |
787 | ||
95f5f88f MM |
788 | ret = service_operation(new_op, |
789 | __func__, | |
790 | get_interruptible_flag(inode)); | |
5db11c21 MM |
791 | |
792 | /* | |
793 | * the truncate has no downcall members to retrieve, but | |
794 | * the status value tells us if it went through ok or not | |
795 | */ | |
95f5f88f | 796 | gossip_debug(GOSSIP_INODE_DEBUG, "%s: ret:%d:\n", __func__, ret); |
5db11c21 MM |
797 | |
798 | op_release(new_op); | |
799 | ||
800 | if (ret != 0) | |
801 | return ret; | |
802 | ||
f83140c1 | 803 | if (orig_size != i_size_read(inode)) |
5db11c21 | 804 | iattr->ia_valid |= ATTR_CTIME | ATTR_MTIME; |
5db11c21 MM |
805 | |
806 | return ret; | |
807 | } | |
808 | ||
afd9fb2a | 809 | int __orangefs_setattr(struct inode *inode, struct iattr *iattr) |
5db11c21 | 810 | { |
df2d7337 | 811 | int ret; |
5db11c21 | 812 | |
afd9fb2a MB |
813 | if (iattr->ia_valid & ATTR_MODE) { |
814 | if (iattr->ia_mode & (S_ISVTX)) { | |
815 | if (is_root_handle(inode)) { | |
816 | /* | |
817 | * allow sticky bit to be set on root (since | |
818 | * it shows up that way by default anyhow), | |
819 | * but don't show it to the server | |
820 | */ | |
821 | iattr->ia_mode -= S_ISVTX; | |
822 | } else { | |
823 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
824 | "User attempted to set sticky bit on non-root directory; returning EINVAL.\n"); | |
8f04e1be MB |
825 | ret = -EINVAL; |
826 | goto out; | |
afd9fb2a MB |
827 | } |
828 | } | |
829 | if (iattr->ia_mode & (S_ISUID)) { | |
830 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
831 | "Attempting to set setuid bit (not supported); returning EINVAL.\n"); | |
8f04e1be MB |
832 | ret = -EINVAL; |
833 | goto out; | |
afd9fb2a MB |
834 | } |
835 | } | |
5db11c21 | 836 | |
53950ef5 | 837 | if (iattr->ia_valid & ATTR_SIZE) { |
8bb8aefd | 838 | ret = orangefs_setattr_size(inode, iattr); |
5db11c21 MM |
839 | if (ret) |
840 | goto out; | |
841 | } | |
842 | ||
afd9fb2a MB |
843 | again: |
844 | spin_lock(&inode->i_lock); | |
845 | if (ORANGEFS_I(inode)->attr_valid) { | |
846 | if (uid_eq(ORANGEFS_I(inode)->attr_uid, current_fsuid()) && | |
847 | gid_eq(ORANGEFS_I(inode)->attr_gid, current_fsgid())) { | |
848 | ORANGEFS_I(inode)->attr_valid = iattr->ia_valid; | |
849 | } else { | |
850 | spin_unlock(&inode->i_lock); | |
851 | write_inode_now(inode, 1); | |
852 | goto again; | |
853 | } | |
854 | } else { | |
855 | ORANGEFS_I(inode)->attr_valid = iattr->ia_valid; | |
856 | ORANGEFS_I(inode)->attr_uid = current_fsuid(); | |
857 | ORANGEFS_I(inode)->attr_gid = current_fsgid(); | |
858 | } | |
2f221d6f | 859 | setattr_copy(&init_user_ns, inode, iattr); |
afd9fb2a | 860 | spin_unlock(&inode->i_lock); |
5db11c21 MM |
861 | mark_inode_dirty(inode); |
862 | ||
df2d7337 | 863 | if (iattr->ia_valid & ATTR_MODE) |
5db11c21 | 864 | /* change mod on a file that has ACLs */ |
e65ce2a5 | 865 | ret = posix_acl_chmod(&init_user_ns, inode, inode->i_mode); |
5db11c21 | 866 | |
df2d7337 | 867 | ret = 0; |
5db11c21 | 868 | out: |
afd9fb2a MB |
869 | return ret; |
870 | } | |
871 | ||
872 | /* | |
873 | * Change attributes of an object referenced by dentry. | |
874 | */ | |
549c7297 CB |
875 | int orangefs_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, |
876 | struct iattr *iattr) | |
afd9fb2a MB |
877 | { |
878 | int ret; | |
879 | gossip_debug(GOSSIP_INODE_DEBUG, "__orangefs_setattr: called on %pd\n", | |
880 | dentry); | |
2f221d6f | 881 | ret = setattr_prepare(&init_user_ns, dentry, iattr); |
afd9fb2a MB |
882 | if (ret) |
883 | goto out; | |
884 | ret = __orangefs_setattr(d_inode(dentry), iattr); | |
885 | sync_inode_metadata(d_inode(dentry), 1); | |
886 | out: | |
887 | gossip_debug(GOSSIP_INODE_DEBUG, "orangefs_setattr: returning %d\n", | |
888 | ret); | |
5db11c21 MM |
889 | return ret; |
890 | } | |
891 | ||
892 | /* | |
893 | * Obtain attributes of an object given a dentry | |
894 | */ | |
549c7297 CB |
895 | int orangefs_getattr(struct user_namespace *mnt_userns, const struct path *path, |
896 | struct kstat *stat, u32 request_mask, unsigned int flags) | |
5db11c21 | 897 | { |
e6b998ab | 898 | int ret; |
a528d35e | 899 | struct inode *inode = path->dentry->d_inode; |
5db11c21 MM |
900 | |
901 | gossip_debug(GOSSIP_INODE_DEBUG, | |
5e4f606e MB |
902 | "orangefs_getattr: called on %pd mask %u\n", |
903 | path->dentry, request_mask); | |
5db11c21 | 904 | |
8b60785c MB |
905 | ret = orangefs_inode_getattr(inode, |
906 | request_mask & STATX_SIZE ? ORANGEFS_GETATTR_SIZE : 0); | |
5db11c21 | 907 | if (ret == 0) { |
0d56a451 | 908 | generic_fillattr(&init_user_ns, inode, stat); |
a7d3e78a | 909 | |
5db11c21 | 910 | /* override block size reported to stat */ |
5678b5d6 CH |
911 | if (!(request_mask & STATX_SIZE)) |
912 | stat->result_mask &= ~STATX_SIZE; | |
7f54910f MB |
913 | |
914 | stat->attributes_mask = STATX_ATTR_IMMUTABLE | | |
915 | STATX_ATTR_APPEND; | |
916 | if (inode->i_flags & S_IMMUTABLE) | |
917 | stat->attributes |= STATX_ATTR_IMMUTABLE; | |
918 | if (inode->i_flags & S_APPEND) | |
919 | stat->attributes |= STATX_ATTR_APPEND; | |
5db11c21 MM |
920 | } |
921 | return ret; | |
922 | } | |
923 | ||
549c7297 CB |
924 | int orangefs_permission(struct user_namespace *mnt_userns, |
925 | struct inode *inode, int mask) | |
933287da MB |
926 | { |
927 | int ret; | |
928 | ||
929 | if (mask & MAY_NOT_BLOCK) | |
930 | return -ECHILD; | |
931 | ||
932 | gossip_debug(GOSSIP_INODE_DEBUG, "%s: refreshing\n", __func__); | |
933 | ||
934 | /* Make sure the permission (and other common attrs) are up to date. */ | |
8b60785c | 935 | ret = orangefs_inode_getattr(inode, 0); |
933287da MB |
936 | if (ret < 0) |
937 | return ret; | |
938 | ||
47291baa | 939 | return generic_permission(&init_user_ns, inode, mask); |
933287da MB |
940 | } |
941 | ||
95582b00 | 942 | int orangefs_update_time(struct inode *inode, struct timespec64 *time, int flags) |
a55f2d86 MB |
943 | { |
944 | struct iattr iattr; | |
945 | gossip_debug(GOSSIP_INODE_DEBUG, "orangefs_update_time: %pU\n", | |
946 | get_khandle_from_ino(inode)); | |
947 | generic_update_time(inode, time, flags); | |
948 | memset(&iattr, 0, sizeof iattr); | |
949 | if (flags & S_ATIME) | |
950 | iattr.ia_valid |= ATTR_ATIME; | |
951 | if (flags & S_CTIME) | |
952 | iattr.ia_valid |= ATTR_CTIME; | |
953 | if (flags & S_MTIME) | |
954 | iattr.ia_valid |= ATTR_MTIME; | |
afd9fb2a | 955 | return __orangefs_setattr(inode, &iattr); |
a55f2d86 MB |
956 | } |
957 | ||
1f26b062 MS |
958 | static int orangefs_fileattr_get(struct dentry *dentry, struct fileattr *fa) |
959 | { | |
960 | u64 val = 0; | |
961 | int ret; | |
962 | ||
963 | gossip_debug(GOSSIP_FILE_DEBUG, "%s: called on %pd\n", __func__, | |
964 | dentry); | |
965 | ||
966 | ret = orangefs_inode_getxattr(d_inode(dentry), | |
967 | "user.pvfs2.meta_hint", | |
968 | &val, sizeof(val)); | |
969 | if (ret < 0 && ret != -ENODATA) | |
970 | return ret; | |
971 | ||
972 | gossip_debug(GOSSIP_FILE_DEBUG, "%s: flags=%u\n", __func__, (u32) val); | |
973 | ||
974 | fileattr_fill_flags(fa, val); | |
975 | return 0; | |
976 | } | |
977 | ||
978 | static int orangefs_fileattr_set(struct user_namespace *mnt_userns, | |
979 | struct dentry *dentry, struct fileattr *fa) | |
980 | { | |
981 | u64 val = 0; | |
982 | ||
983 | gossip_debug(GOSSIP_FILE_DEBUG, "%s: called on %pd\n", __func__, | |
984 | dentry); | |
985 | /* | |
986 | * ORANGEFS_MIRROR_FL is set internally when the mirroring mode is | |
987 | * turned on for a file. The user is not allowed to turn on this bit, | |
988 | * but the bit is present if the user first gets the flags and then | |
989 | * updates the flags with some new settings. So, we ignore it in the | |
990 | * following edit. bligon. | |
991 | */ | |
992 | if (fileattr_has_fsx(fa) || | |
993 | (fa->flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | FS_NOATIME_FL | ORANGEFS_MIRROR_FL))) { | |
994 | gossip_err("%s: only supports setting one of FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NOATIME_FL\n", | |
995 | __func__); | |
996 | return -EOPNOTSUPP; | |
997 | } | |
998 | val = fa->flags; | |
999 | gossip_debug(GOSSIP_FILE_DEBUG, "%s: flags=%u\n", __func__, (u32) val); | |
1000 | return orangefs_inode_setxattr(d_inode(dentry), | |
1001 | "user.pvfs2.meta_hint", | |
1002 | &val, sizeof(val), 0); | |
1003 | } | |
1004 | ||
95f5f88f | 1005 | /* ORANGEFS2 implementation of VFS inode operations for files */ |
bdd6f083 | 1006 | static const struct inode_operations orangefs_file_inode_operations = { |
8bb8aefd YL |
1007 | .get_acl = orangefs_get_acl, |
1008 | .set_acl = orangefs_set_acl, | |
1009 | .setattr = orangefs_setattr, | |
1010 | .getattr = orangefs_getattr, | |
8bb8aefd | 1011 | .listxattr = orangefs_listxattr, |
933287da | 1012 | .permission = orangefs_permission, |
a55f2d86 | 1013 | .update_time = orangefs_update_time, |
1f26b062 MS |
1014 | .fileattr_get = orangefs_fileattr_get, |
1015 | .fileattr_set = orangefs_fileattr_set, | |
5db11c21 MM |
1016 | }; |
1017 | ||
8bb8aefd | 1018 | static int orangefs_init_iops(struct inode *inode) |
5db11c21 | 1019 | { |
8bb8aefd | 1020 | inode->i_mapping->a_ops = &orangefs_address_operations; |
5db11c21 MM |
1021 | |
1022 | switch (inode->i_mode & S_IFMT) { | |
1023 | case S_IFREG: | |
8bb8aefd YL |
1024 | inode->i_op = &orangefs_file_inode_operations; |
1025 | inode->i_fop = &orangefs_file_operations; | |
5db11c21 MM |
1026 | break; |
1027 | case S_IFLNK: | |
8bb8aefd | 1028 | inode->i_op = &orangefs_symlink_inode_operations; |
5db11c21 MM |
1029 | break; |
1030 | case S_IFDIR: | |
8bb8aefd YL |
1031 | inode->i_op = &orangefs_dir_inode_operations; |
1032 | inode->i_fop = &orangefs_dir_operations; | |
5db11c21 MM |
1033 | break; |
1034 | default: | |
1035 | gossip_debug(GOSSIP_INODE_DEBUG, | |
1036 | "%s: unsupported mode\n", | |
1037 | __func__); | |
1038 | return -EINVAL; | |
1039 | } | |
1040 | ||
1041 | return 0; | |
1042 | } | |
1043 | ||
1044 | /* | |
95f5f88f MM |
1045 | * Given an ORANGEFS object identifier (fsid, handle), convert it into |
1046 | * a ino_t type that will be used as a hash-index from where the handle will | |
5db11c21 MM |
1047 | * be searched for in the VFS hash table of inodes. |
1048 | */ | |
8bb8aefd | 1049 | static inline ino_t orangefs_handle_hash(struct orangefs_object_kref *ref) |
5db11c21 MM |
1050 | { |
1051 | if (!ref) | |
1052 | return 0; | |
8bb8aefd | 1053 | return orangefs_khandle_to_ino(&(ref->khandle)); |
5db11c21 MM |
1054 | } |
1055 | ||
1056 | /* | |
1057 | * Called to set up an inode from iget5_locked. | |
1058 | */ | |
8bb8aefd | 1059 | static int orangefs_set_inode(struct inode *inode, void *data) |
5db11c21 | 1060 | { |
8bb8aefd | 1061 | struct orangefs_object_kref *ref = (struct orangefs_object_kref *) data; |
a4c680a0 MB |
1062 | ORANGEFS_I(inode)->refn.fs_id = ref->fs_id; |
1063 | ORANGEFS_I(inode)->refn.khandle = ref->khandle; | |
afd9fb2a | 1064 | ORANGEFS_I(inode)->attr_valid = 0; |
fc2e2e9c | 1065 | hash_init(ORANGEFS_I(inode)->xattr_cache); |
8f04e1be MB |
1066 | ORANGEFS_I(inode)->mapping_time = jiffies - 1; |
1067 | ORANGEFS_I(inode)->bitlock = 0; | |
5db11c21 MM |
1068 | return 0; |
1069 | } | |
1070 | ||
1071 | /* | |
1072 | * Called to determine if handles match. | |
1073 | */ | |
8bb8aefd | 1074 | static int orangefs_test_inode(struct inode *inode, void *data) |
5db11c21 | 1075 | { |
8bb8aefd YL |
1076 | struct orangefs_object_kref *ref = (struct orangefs_object_kref *) data; |
1077 | struct orangefs_inode_s *orangefs_inode = NULL; | |
5db11c21 | 1078 | |
8bb8aefd | 1079 | orangefs_inode = ORANGEFS_I(inode); |
95f5f88f MM |
1080 | /* test handles and fs_ids... */ |
1081 | return (!ORANGEFS_khandle_cmp(&(orangefs_inode->refn.khandle), | |
1082 | &(ref->khandle)) && | |
1083 | orangefs_inode->refn.fs_id == ref->fs_id); | |
5db11c21 MM |
1084 | } |
1085 | ||
1086 | /* | |
8bb8aefd | 1087 | * Front-end to lookup the inode-cache maintained by the VFS using the ORANGEFS |
5db11c21 MM |
1088 | * file handle. |
1089 | * | |
1090 | * @sb: the file system super block instance. | |
95f5f88f | 1091 | * @ref: The ORANGEFS object for which we are trying to locate an inode. |
5db11c21 | 1092 | */ |
95f5f88f MM |
1093 | struct inode *orangefs_iget(struct super_block *sb, |
1094 | struct orangefs_object_kref *ref) | |
5db11c21 MM |
1095 | { |
1096 | struct inode *inode = NULL; | |
1097 | unsigned long hash; | |
1098 | int error; | |
1099 | ||
8bb8aefd | 1100 | hash = orangefs_handle_hash(ref); |
95f5f88f MM |
1101 | inode = iget5_locked(sb, |
1102 | hash, | |
1103 | orangefs_test_inode, | |
1104 | orangefs_set_inode, | |
1105 | ref); | |
b5d72cdc MM |
1106 | |
1107 | if (!inode) | |
1108 | return ERR_PTR(-ENOMEM); | |
1109 | ||
1110 | if (!(inode->i_state & I_NEW)) | |
5db11c21 MM |
1111 | return inode; |
1112 | ||
8b60785c | 1113 | error = orangefs_inode_getattr(inode, ORANGEFS_GETATTR_NEW); |
5db11c21 MM |
1114 | if (error) { |
1115 | iget_failed(inode); | |
1116 | return ERR_PTR(error); | |
1117 | } | |
1118 | ||
1119 | inode->i_ino = hash; /* needed for stat etc */ | |
8bb8aefd | 1120 | orangefs_init_iops(inode); |
5db11c21 MM |
1121 | unlock_new_inode(inode); |
1122 | ||
1123 | gossip_debug(GOSSIP_INODE_DEBUG, | |
1124 | "iget handle %pU, fsid %d hash %ld i_ino %lu\n", | |
1125 | &ref->khandle, | |
1126 | ref->fs_id, | |
1127 | hash, | |
1128 | inode->i_ino); | |
1129 | ||
1130 | return inode; | |
1131 | } | |
1132 | ||
1133 | /* | |
1134 | * Allocate an inode for a newly created file and insert it into the inode hash. | |
1135 | */ | |
8bb8aefd YL |
1136 | struct inode *orangefs_new_inode(struct super_block *sb, struct inode *dir, |
1137 | int mode, dev_t dev, struct orangefs_object_kref *ref) | |
5db11c21 | 1138 | { |
8bb8aefd | 1139 | unsigned long hash = orangefs_handle_hash(ref); |
5db11c21 MM |
1140 | struct inode *inode; |
1141 | int error; | |
1142 | ||
1143 | gossip_debug(GOSSIP_INODE_DEBUG, | |
5253487e MM |
1144 | "%s:(sb is %p | MAJOR(dev)=%u | MINOR(dev)=%u mode=%o)\n", |
1145 | __func__, | |
5db11c21 MM |
1146 | sb, |
1147 | MAJOR(dev), | |
1148 | MINOR(dev), | |
1149 | mode); | |
1150 | ||
1151 | inode = new_inode(sb); | |
1152 | if (!inode) | |
56249998 | 1153 | return ERR_PTR(-ENOMEM); |
5db11c21 | 1154 | |
8bb8aefd | 1155 | orangefs_set_inode(inode, ref); |
5db11c21 MM |
1156 | inode->i_ino = hash; /* needed for stat etc */ |
1157 | ||
8b60785c | 1158 | error = orangefs_inode_getattr(inode, ORANGEFS_GETATTR_NEW); |
5db11c21 MM |
1159 | if (error) |
1160 | goto out_iput; | |
1161 | ||
8bb8aefd | 1162 | orangefs_init_iops(inode); |
5db11c21 MM |
1163 | inode->i_rdev = dev; |
1164 | ||
8bb8aefd | 1165 | error = insert_inode_locked4(inode, hash, orangefs_test_inode, ref); |
5db11c21 MM |
1166 | if (error < 0) |
1167 | goto out_iput; | |
1168 | ||
1169 | gossip_debug(GOSSIP_INODE_DEBUG, | |
1170 | "Initializing ACL's for inode %pU\n", | |
1171 | get_khandle_from_ino(inode)); | |
8bb8aefd | 1172 | orangefs_init_acl(inode, dir); |
5db11c21 MM |
1173 | return inode; |
1174 | ||
1175 | out_iput: | |
1176 | iput(inode); | |
1177 | return ERR_PTR(error); | |
1178 | } |