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> |
5db11c21 | 14 | #include "protocol.h" |
575e9461 MM |
15 | #include "orangefs-kernel.h" |
16 | #include "orangefs-bufmap.h" | |
5db11c21 | 17 | |
52e2d0a3 MB |
18 | static int orangefs_writepage_locked(struct page *page, |
19 | struct writeback_control *wbc) | |
85ac799c MB |
20 | { |
21 | struct inode *inode = page->mapping->host; | |
52e2d0a3 | 22 | struct orangefs_write_range *wr = NULL; |
85ac799c MB |
23 | struct iov_iter iter; |
24 | struct bio_vec bv; | |
25 | size_t len, wlen; | |
26 | ssize_t ret; | |
27 | loff_t off; | |
28 | ||
29 | set_page_writeback(page); | |
30 | ||
85ac799c | 31 | len = i_size_read(inode); |
52e2d0a3 MB |
32 | if (PagePrivate(page)) { |
33 | wr = (struct orangefs_write_range *)page_private(page); | |
34 | off = wr->pos; | |
35 | if (off + wr->len > len) | |
36 | wlen = len - off; | |
37 | else | |
38 | wlen = wr->len; | |
39 | } else { | |
40 | WARN_ON(1); | |
41 | off = page_offset(page); | |
42 | if (off + PAGE_SIZE > len) | |
43 | wlen = len - off; | |
44 | else | |
45 | wlen = PAGE_SIZE; | |
85ac799c | 46 | } |
52e2d0a3 MB |
47 | /* Should've been handled in orangefs_invalidatepage. */ |
48 | WARN_ON(off == len || off + wlen > len); | |
85ac799c MB |
49 | |
50 | bv.bv_page = page; | |
51 | bv.bv_len = wlen; | |
52 | bv.bv_offset = off % PAGE_SIZE; | |
52e2d0a3 | 53 | WARN_ON(wlen == 0); |
85ac799c MB |
54 | iov_iter_bvec(&iter, WRITE, &bv, 1, wlen); |
55 | ||
56 | ret = wait_for_direct_io(ORANGEFS_IO_WRITE, inode, &off, &iter, wlen, | |
52e2d0a3 | 57 | len, wr); |
85ac799c MB |
58 | if (ret < 0) { |
59 | SetPageError(page); | |
60 | mapping_set_error(page->mapping, ret); | |
61 | } else { | |
62 | ret = 0; | |
63 | } | |
52e2d0a3 MB |
64 | if (wr) { |
65 | kfree(wr); | |
66 | set_page_private(page, 0); | |
67 | ClearPagePrivate(page); | |
68 | put_page(page); | |
69 | } | |
70 | return ret; | |
71 | } | |
72 | ||
73 | static int orangefs_writepage(struct page *page, struct writeback_control *wbc) | |
74 | { | |
75 | int ret; | |
76 | ret = orangefs_writepage_locked(page, wbc); | |
85ac799c MB |
77 | unlock_page(page); |
78 | end_page_writeback(page); | |
79 | return ret; | |
80 | } | |
81 | ||
a68d9c60 | 82 | static int orangefs_readpage(struct file *file, struct page *page) |
5db11c21 | 83 | { |
5db11c21 | 84 | struct inode *inode = page->mapping->host; |
c453dcfc MB |
85 | struct iov_iter iter; |
86 | struct bio_vec bv; | |
87 | ssize_t ret; | |
88 | loff_t off; | |
89 | ||
90 | off = page_offset(page); | |
91 | bv.bv_page = page; | |
92 | bv.bv_len = PAGE_SIZE; | |
93 | bv.bv_offset = 0; | |
94 | iov_iter_bvec(&iter, READ, &bv, 1, PAGE_SIZE); | |
95 | ||
96 | ret = wait_for_direct_io(ORANGEFS_IO_READ, inode, &off, &iter, | |
52e2d0a3 | 97 | PAGE_SIZE, inode->i_size, NULL); |
74f68fce | 98 | /* this will only zero remaining unread portions of the page data */ |
c453dcfc | 99 | iov_iter_zero(~0U, &iter); |
5db11c21 MM |
100 | /* takes care of potential aliasing */ |
101 | flush_dcache_page(page); | |
c453dcfc | 102 | if (ret < 0) { |
5db11c21 MM |
103 | SetPageError(page); |
104 | } else { | |
105 | SetPageUptodate(page); | |
106 | if (PageError(page)) | |
107 | ClearPageError(page); | |
108 | ret = 0; | |
109 | } | |
5db11c21 MM |
110 | /* unlock the page after the ->readpage() routine completes */ |
111 | unlock_page(page); | |
112 | return ret; | |
113 | } | |
114 | ||
52e2d0a3 MB |
115 | static int orangefs_launder_page(struct page *); |
116 | ||
117 | static int orangefs_write_begin(struct file *file, | |
118 | struct address_space *mapping, | |
119 | loff_t pos, unsigned len, unsigned flags, struct page **pagep, | |
120 | void **fsdata) | |
121 | { | |
122 | struct orangefs_write_range *wr; | |
123 | struct page *page; | |
124 | pgoff_t index; | |
125 | int ret; | |
126 | ||
127 | index = pos >> PAGE_SHIFT; | |
128 | ||
129 | page = grab_cache_page_write_begin(mapping, index, flags); | |
130 | if (!page) | |
131 | return -ENOMEM; | |
132 | ||
133 | *pagep = page; | |
134 | ||
135 | if (PageDirty(page) && !PagePrivate(page)) { | |
136 | /* | |
137 | * Should be impossible. If it happens, launder the page | |
138 | * since we don't know what's dirty. This will WARN in | |
139 | * orangefs_writepage_locked. | |
140 | */ | |
141 | ret = orangefs_launder_page(page); | |
142 | if (ret) | |
143 | return ret; | |
144 | } | |
145 | if (PagePrivate(page)) { | |
146 | struct orangefs_write_range *wr; | |
147 | wr = (struct orangefs_write_range *)page_private(page); | |
148 | if (wr->pos + wr->len == pos && | |
149 | uid_eq(wr->uid, current_fsuid()) && | |
150 | gid_eq(wr->gid, current_fsgid())) { | |
151 | wr->len += len; | |
152 | goto okay; | |
153 | } else { | |
154 | ret = orangefs_launder_page(page); | |
155 | if (ret) | |
156 | return ret; | |
157 | } | |
158 | ||
159 | } | |
160 | ||
161 | wr = kmalloc(sizeof *wr, GFP_KERNEL); | |
162 | if (!wr) | |
163 | return -ENOMEM; | |
164 | ||
165 | wr->pos = pos; | |
166 | wr->len = len; | |
167 | wr->uid = current_fsuid(); | |
168 | wr->gid = current_fsgid(); | |
169 | SetPagePrivate(page); | |
170 | set_page_private(page, (unsigned long)wr); | |
171 | get_page(page); | |
172 | okay: | |
173 | ||
174 | if (!PageUptodate(page) && (len != PAGE_SIZE)) { | |
175 | unsigned from = pos & (PAGE_SIZE - 1); | |
176 | ||
177 | zero_user_segments(page, 0, from, from + len, PAGE_SIZE); | |
178 | } | |
179 | return 0; | |
180 | } | |
181 | ||
85ac799c MB |
182 | static int orangefs_write_end(struct file *file, struct address_space *mapping, |
183 | loff_t pos, unsigned len, unsigned copied, struct page *page, void *fsdata) | |
184 | { | |
185 | int r; | |
186 | r = simple_write_end(file, mapping, pos, len, copied, page, fsdata); | |
187 | mark_inode_dirty_sync(file_inode(file)); | |
188 | return r; | |
189 | } | |
190 | ||
8bb8aefd | 191 | static void orangefs_invalidatepage(struct page *page, |
5db11c21 MM |
192 | unsigned int offset, |
193 | unsigned int length) | |
194 | { | |
52e2d0a3 MB |
195 | struct orangefs_write_range *wr; |
196 | wr = (struct orangefs_write_range *)page_private(page); | |
197 | ||
198 | if (offset == 0 && length == PAGE_SIZE) { | |
199 | kfree((struct orangefs_write_range *)page_private(page)); | |
200 | set_page_private(page, 0); | |
201 | ClearPagePrivate(page); | |
202 | put_page(page); | |
203 | /* write range entirely within invalidate range (or equal) */ | |
204 | } else if (page_offset(page) + offset <= wr->pos && | |
205 | wr->pos + wr->len <= page_offset(page) + offset + length) { | |
206 | kfree((struct orangefs_write_range *)page_private(page)); | |
207 | set_page_private(page, 0); | |
208 | ClearPagePrivate(page); | |
209 | put_page(page); | |
210 | /* XXX is this right? only caller in fs */ | |
211 | cancel_dirty_page(page); | |
212 | /* invalidate range chops off end of write range */ | |
213 | } else if (wr->pos < page_offset(page) + offset && | |
214 | wr->pos + wr->len <= page_offset(page) + offset + length && | |
215 | page_offset(page) + offset < wr->pos + wr->len) { | |
216 | size_t x; | |
217 | x = wr->pos + wr->len - (page_offset(page) + offset); | |
218 | WARN_ON(x > wr->len); | |
219 | wr->len -= x; | |
220 | wr->uid = current_fsuid(); | |
221 | wr->gid = current_fsgid(); | |
222 | /* invalidate range chops off beginning of write range */ | |
223 | } else if (page_offset(page) + offset <= wr->pos && | |
224 | page_offset(page) + offset + length < wr->pos + wr->len && | |
225 | wr->pos < page_offset(page) + offset + length) { | |
226 | size_t x; | |
227 | x = page_offset(page) + offset + length - wr->pos; | |
228 | WARN_ON(x > wr->len); | |
229 | wr->pos += x; | |
230 | wr->len -= x; | |
231 | wr->uid = current_fsuid(); | |
232 | wr->gid = current_fsgid(); | |
233 | /* invalidate range entirely within write range (punch hole) */ | |
234 | } else if (wr->pos < page_offset(page) + offset && | |
235 | page_offset(page) + offset + length < wr->pos + wr->len) { | |
236 | /* XXX what do we do here... should not WARN_ON */ | |
237 | WARN_ON(1); | |
238 | /* punch hole */ | |
239 | /* | |
240 | * should we just ignore this and write it out anyway? | |
241 | * it hardly makes sense | |
242 | */ | |
243 | /* non-overlapping ranges */ | |
244 | } else { | |
245 | /* WARN if they do overlap */ | |
246 | if (!((page_offset(page) + offset + length <= wr->pos) ^ | |
247 | (wr->pos + wr->len <= page_offset(page) + offset))) { | |
248 | WARN_ON(1); | |
249 | printk("invalidate range offset %llu length %u\n", | |
250 | page_offset(page) + offset, length); | |
251 | printk("write range offset %llu length %zu\n", | |
252 | wr->pos, wr->len); | |
253 | } | |
254 | } | |
255 | } | |
5db11c21 | 256 | |
52e2d0a3 MB |
257 | static int orangefs_releasepage(struct page *page, gfp_t foo) |
258 | { | |
259 | return !PagePrivate(page); | |
260 | } | |
5db11c21 | 261 | |
52e2d0a3 MB |
262 | static void orangefs_freepage(struct page *page) |
263 | { | |
264 | if (PagePrivate(page)) { | |
265 | kfree((struct orangefs_write_range *)page_private(page)); | |
266 | set_page_private(page, 0); | |
267 | ClearPagePrivate(page); | |
268 | put_page(page); | |
269 | } | |
5db11c21 MM |
270 | } |
271 | ||
52e2d0a3 | 272 | static int orangefs_launder_page(struct page *page) |
5db11c21 | 273 | { |
52e2d0a3 MB |
274 | int r = 0; |
275 | struct writeback_control wbc = { | |
276 | .sync_mode = WB_SYNC_ALL, | |
277 | .nr_to_write = 0, | |
278 | }; | |
279 | wait_on_page_writeback(page); | |
280 | if (clear_page_dirty_for_io(page)) { | |
281 | r = orangefs_writepage_locked(page, &wbc); | |
282 | end_page_writeback(page); | |
283 | } | |
284 | return r; | |
5db11c21 MM |
285 | } |
286 | ||
3903f150 MM |
287 | static ssize_t orangefs_direct_IO(struct kiocb *iocb, |
288 | struct iov_iter *iter) | |
289 | { | |
3e9dfc6e MB |
290 | /* |
291 | * Comment from original do_readv_writev: | |
292 | * Common entry point for read/write/readv/writev | |
293 | * This function will dispatch it to either the direct I/O | |
294 | * or buffered I/O path depending on the mount options and/or | |
295 | * augmented/extended metadata attached to the file. | |
296 | * Note: File extended attributes override any mount options. | |
297 | */ | |
c453dcfc | 298 | struct file *file = iocb->ki_filp; |
3e9dfc6e MB |
299 | loff_t pos = iocb->ki_pos; |
300 | enum ORANGEFS_io_type type = iov_iter_rw(iter) == WRITE ? | |
301 | ORANGEFS_IO_WRITE : ORANGEFS_IO_READ; | |
302 | loff_t *offset = &pos; | |
303 | struct inode *inode = file->f_mapping->host; | |
304 | struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); | |
305 | struct orangefs_khandle *handle = &orangefs_inode->refn.khandle; | |
306 | size_t count = iov_iter_count(iter); | |
3e9dfc6e MB |
307 | ssize_t total_count = 0; |
308 | ssize_t ret = -EINVAL; | |
309 | int i = 0; | |
310 | ||
311 | gossip_debug(GOSSIP_FILE_DEBUG, | |
312 | "%s-BEGIN(%pU): count(%d) after estimate_max_iovecs.\n", | |
313 | __func__, | |
314 | handle, | |
315 | (int)count); | |
316 | ||
317 | if (type == ORANGEFS_IO_WRITE) { | |
318 | gossip_debug(GOSSIP_FILE_DEBUG, | |
319 | "%s(%pU): proceeding with offset : %llu, " | |
320 | "size %d\n", | |
321 | __func__, | |
322 | handle, | |
323 | llu(*offset), | |
324 | (int)count); | |
325 | } | |
326 | ||
327 | if (count == 0) { | |
328 | ret = 0; | |
329 | goto out; | |
330 | } | |
331 | ||
332 | while (iov_iter_count(iter)) { | |
333 | size_t each_count = iov_iter_count(iter); | |
334 | size_t amt_complete; | |
335 | i++; | |
336 | ||
337 | /* how much to transfer in this loop iteration */ | |
338 | if (each_count > orangefs_bufmap_size_query()) | |
339 | each_count = orangefs_bufmap_size_query(); | |
340 | ||
341 | gossip_debug(GOSSIP_FILE_DEBUG, | |
342 | "%s(%pU): size of each_count(%d)\n", | |
343 | __func__, | |
344 | handle, | |
345 | (int)each_count); | |
346 | gossip_debug(GOSSIP_FILE_DEBUG, | |
347 | "%s(%pU): BEFORE wait_for_io: offset is %d\n", | |
348 | __func__, | |
349 | handle, | |
350 | (int)*offset); | |
351 | ||
352 | ret = wait_for_direct_io(type, inode, offset, iter, | |
52e2d0a3 | 353 | each_count, 0, NULL); |
3e9dfc6e MB |
354 | gossip_debug(GOSSIP_FILE_DEBUG, |
355 | "%s(%pU): return from wait_for_io:%d\n", | |
356 | __func__, | |
357 | handle, | |
358 | (int)ret); | |
359 | ||
360 | if (ret < 0) | |
361 | goto out; | |
362 | ||
363 | *offset += ret; | |
364 | total_count += ret; | |
365 | amt_complete = ret; | |
366 | ||
367 | gossip_debug(GOSSIP_FILE_DEBUG, | |
368 | "%s(%pU): AFTER wait_for_io: offset is %d\n", | |
369 | __func__, | |
370 | handle, | |
371 | (int)*offset); | |
372 | ||
373 | /* | |
374 | * if we got a short I/O operations, | |
375 | * fall out and return what we got so far | |
376 | */ | |
377 | if (amt_complete < each_count) | |
378 | break; | |
379 | } /*end while */ | |
380 | ||
381 | out: | |
382 | if (total_count > 0) | |
383 | ret = total_count; | |
384 | if (ret > 0) { | |
385 | if (type == ORANGEFS_IO_READ) { | |
386 | file_accessed(file); | |
387 | } else { | |
388 | file_update_time(file); | |
389 | if (*offset > i_size_read(inode)) | |
390 | i_size_write(inode, *offset); | |
391 | } | |
392 | } | |
393 | ||
394 | gossip_debug(GOSSIP_FILE_DEBUG, | |
395 | "%s(%pU): Value(%d) returned.\n", | |
396 | __func__, | |
397 | handle, | |
398 | (int)ret); | |
399 | ||
400 | return ret; | |
3903f150 | 401 | } |
5db11c21 | 402 | |
8bb8aefd | 403 | /** ORANGEFS2 implementation of address space operations */ |
bdd6f083 | 404 | static const struct address_space_operations orangefs_address_operations = { |
85ac799c | 405 | .writepage = orangefs_writepage, |
8bb8aefd | 406 | .readpage = orangefs_readpage, |
85ac799c | 407 | .set_page_dirty = __set_page_dirty_nobuffers, |
52e2d0a3 | 408 | .write_begin = orangefs_write_begin, |
85ac799c | 409 | .write_end = orangefs_write_end, |
8bb8aefd YL |
410 | .invalidatepage = orangefs_invalidatepage, |
411 | .releasepage = orangefs_releasepage, | |
52e2d0a3 MB |
412 | .freepage = orangefs_freepage, |
413 | .launder_page = orangefs_launder_page, | |
3903f150 | 414 | .direct_IO = orangefs_direct_IO, |
5db11c21 MM |
415 | }; |
416 | ||
52e2d0a3 MB |
417 | vm_fault_t orangefs_page_mkwrite(struct vm_fault *vmf) |
418 | { | |
419 | struct page *page = vmf->page; | |
420 | struct inode *inode = file_inode(vmf->vma->vm_file); | |
421 | vm_fault_t ret = VM_FAULT_LOCKED; | |
422 | struct orangefs_write_range *wr; | |
423 | ||
424 | lock_page(page); | |
425 | if (PageDirty(page) && !PagePrivate(page)) { | |
426 | /* | |
427 | * Should be impossible. If it happens, launder the page | |
428 | * since we don't know what's dirty. This will WARN in | |
429 | * orangefs_writepage_locked. | |
430 | */ | |
431 | if (orangefs_launder_page(page)) { | |
432 | ret = VM_FAULT_RETRY; | |
433 | goto out; | |
434 | } | |
435 | } | |
436 | if (PagePrivate(page)) { | |
437 | wr = (struct orangefs_write_range *)page_private(page); | |
438 | if (uid_eq(wr->uid, current_fsuid()) && | |
439 | gid_eq(wr->gid, current_fsgid())) { | |
440 | wr->pos = page_offset(page); | |
441 | wr->len = PAGE_SIZE; | |
442 | goto okay; | |
443 | } else { | |
444 | if (orangefs_launder_page(page)) { | |
445 | ret = VM_FAULT_RETRY; | |
446 | goto out; | |
447 | } | |
448 | } | |
449 | } | |
450 | wr = kmalloc(sizeof *wr, GFP_KERNEL); | |
451 | if (!wr) { | |
452 | ret = VM_FAULT_RETRY; | |
453 | goto out; | |
454 | } | |
455 | wr->pos = page_offset(page); | |
456 | wr->len = PAGE_SIZE; | |
457 | wr->uid = current_fsuid(); | |
458 | wr->gid = current_fsgid(); | |
459 | SetPagePrivate(page); | |
460 | set_page_private(page, (unsigned long)wr); | |
461 | get_page(page); | |
462 | okay: | |
463 | ||
464 | sb_start_pagefault(inode->i_sb); | |
465 | file_update_time(vmf->vma->vm_file); | |
466 | if (page->mapping != inode->i_mapping) { | |
467 | unlock_page(page); | |
468 | ret = VM_FAULT_NOPAGE; | |
469 | goto out; | |
470 | } | |
471 | ||
472 | /* | |
473 | * We mark the page dirty already here so that when freeze is in | |
474 | * progress, we are guaranteed that writeback during freezing will | |
475 | * see the dirty page and writeprotect it again. | |
476 | */ | |
477 | set_page_dirty(page); | |
478 | wait_for_stable_page(page); | |
479 | out: | |
480 | sb_end_pagefault(inode->i_sb); | |
481 | return ret; | |
482 | } | |
483 | ||
8bb8aefd | 484 | static int orangefs_setattr_size(struct inode *inode, struct iattr *iattr) |
5db11c21 | 485 | { |
8bb8aefd YL |
486 | struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); |
487 | struct orangefs_kernel_op_s *new_op; | |
fecd86aa | 488 | loff_t orig_size; |
5db11c21 MM |
489 | int ret = -EINVAL; |
490 | ||
491 | gossip_debug(GOSSIP_INODE_DEBUG, | |
492 | "%s: %pU: Handle is %pU | fs_id %d | size is %llu\n", | |
493 | __func__, | |
494 | get_khandle_from_ino(inode), | |
8bb8aefd YL |
495 | &orangefs_inode->refn.khandle, |
496 | orangefs_inode->refn.fs_id, | |
5db11c21 MM |
497 | iattr->ia_size); |
498 | ||
fecd86aa | 499 | /* Ensure that we have a up to date size, so we know if it changed. */ |
8b60785c | 500 | ret = orangefs_inode_getattr(inode, ORANGEFS_GETATTR_SIZE); |
fecd86aa MB |
501 | if (ret == -ESTALE) |
502 | ret = -EIO; | |
503 | if (ret) { | |
504 | gossip_err("%s: orangefs_inode_getattr failed, ret:%d:.\n", | |
505 | __func__, ret); | |
506 | return ret; | |
507 | } | |
508 | orig_size = i_size_read(inode); | |
509 | ||
5db11c21 MM |
510 | truncate_setsize(inode, iattr->ia_size); |
511 | ||
8bb8aefd | 512 | new_op = op_alloc(ORANGEFS_VFS_OP_TRUNCATE); |
5db11c21 MM |
513 | if (!new_op) |
514 | return -ENOMEM; | |
515 | ||
8bb8aefd | 516 | new_op->upcall.req.truncate.refn = orangefs_inode->refn; |
5db11c21 MM |
517 | new_op->upcall.req.truncate.size = (__s64) iattr->ia_size; |
518 | ||
95f5f88f MM |
519 | ret = service_operation(new_op, |
520 | __func__, | |
521 | get_interruptible_flag(inode)); | |
5db11c21 MM |
522 | |
523 | /* | |
524 | * the truncate has no downcall members to retrieve, but | |
525 | * the status value tells us if it went through ok or not | |
526 | */ | |
95f5f88f | 527 | gossip_debug(GOSSIP_INODE_DEBUG, "%s: ret:%d:\n", __func__, ret); |
5db11c21 MM |
528 | |
529 | op_release(new_op); | |
530 | ||
531 | if (ret != 0) | |
532 | return ret; | |
533 | ||
f83140c1 | 534 | if (orig_size != i_size_read(inode)) |
5db11c21 | 535 | iattr->ia_valid |= ATTR_CTIME | ATTR_MTIME; |
5db11c21 MM |
536 | |
537 | return ret; | |
538 | } | |
539 | ||
afd9fb2a | 540 | int __orangefs_setattr(struct inode *inode, struct iattr *iattr) |
5db11c21 | 541 | { |
df2d7337 | 542 | int ret; |
5db11c21 | 543 | |
afd9fb2a MB |
544 | if (iattr->ia_valid & ATTR_MODE) { |
545 | if (iattr->ia_mode & (S_ISVTX)) { | |
546 | if (is_root_handle(inode)) { | |
547 | /* | |
548 | * allow sticky bit to be set on root (since | |
549 | * it shows up that way by default anyhow), | |
550 | * but don't show it to the server | |
551 | */ | |
552 | iattr->ia_mode -= S_ISVTX; | |
553 | } else { | |
554 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
555 | "User attempted to set sticky bit on non-root directory; returning EINVAL.\n"); | |
556 | return -EINVAL; | |
557 | } | |
558 | } | |
559 | if (iattr->ia_mode & (S_ISUID)) { | |
560 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
561 | "Attempting to set setuid bit (not supported); returning EINVAL.\n"); | |
562 | return -EINVAL; | |
563 | } | |
564 | } | |
5db11c21 | 565 | |
53950ef5 | 566 | if (iattr->ia_valid & ATTR_SIZE) { |
8bb8aefd | 567 | ret = orangefs_setattr_size(inode, iattr); |
5db11c21 MM |
568 | if (ret) |
569 | goto out; | |
570 | } | |
571 | ||
afd9fb2a MB |
572 | again: |
573 | spin_lock(&inode->i_lock); | |
574 | if (ORANGEFS_I(inode)->attr_valid) { | |
575 | if (uid_eq(ORANGEFS_I(inode)->attr_uid, current_fsuid()) && | |
576 | gid_eq(ORANGEFS_I(inode)->attr_gid, current_fsgid())) { | |
577 | ORANGEFS_I(inode)->attr_valid = iattr->ia_valid; | |
578 | } else { | |
579 | spin_unlock(&inode->i_lock); | |
580 | write_inode_now(inode, 1); | |
581 | goto again; | |
582 | } | |
583 | } else { | |
584 | ORANGEFS_I(inode)->attr_valid = iattr->ia_valid; | |
585 | ORANGEFS_I(inode)->attr_uid = current_fsuid(); | |
586 | ORANGEFS_I(inode)->attr_gid = current_fsgid(); | |
587 | } | |
5db11c21 | 588 | setattr_copy(inode, iattr); |
afd9fb2a | 589 | spin_unlock(&inode->i_lock); |
5db11c21 MM |
590 | mark_inode_dirty(inode); |
591 | ||
df2d7337 | 592 | if (iattr->ia_valid & ATTR_MODE) |
5db11c21 MM |
593 | /* change mod on a file that has ACLs */ |
594 | ret = posix_acl_chmod(inode, inode->i_mode); | |
595 | ||
df2d7337 | 596 | ret = 0; |
5db11c21 | 597 | out: |
afd9fb2a MB |
598 | return ret; |
599 | } | |
600 | ||
601 | /* | |
602 | * Change attributes of an object referenced by dentry. | |
603 | */ | |
604 | int orangefs_setattr(struct dentry *dentry, struct iattr *iattr) | |
605 | { | |
606 | int ret; | |
607 | gossip_debug(GOSSIP_INODE_DEBUG, "__orangefs_setattr: called on %pd\n", | |
608 | dentry); | |
609 | ret = setattr_prepare(dentry, iattr); | |
610 | if (ret) | |
611 | goto out; | |
612 | ret = __orangefs_setattr(d_inode(dentry), iattr); | |
613 | sync_inode_metadata(d_inode(dentry), 1); | |
614 | out: | |
615 | gossip_debug(GOSSIP_INODE_DEBUG, "orangefs_setattr: returning %d\n", | |
616 | ret); | |
5db11c21 MM |
617 | return ret; |
618 | } | |
619 | ||
620 | /* | |
621 | * Obtain attributes of an object given a dentry | |
622 | */ | |
a528d35e DH |
623 | int orangefs_getattr(const struct path *path, struct kstat *stat, |
624 | u32 request_mask, unsigned int flags) | |
5db11c21 MM |
625 | { |
626 | int ret = -ENOENT; | |
a528d35e | 627 | struct inode *inode = path->dentry->d_inode; |
5db11c21 MM |
628 | |
629 | gossip_debug(GOSSIP_INODE_DEBUG, | |
5e4f606e MB |
630 | "orangefs_getattr: called on %pd mask %u\n", |
631 | path->dentry, request_mask); | |
5db11c21 | 632 | |
8b60785c MB |
633 | ret = orangefs_inode_getattr(inode, |
634 | request_mask & STATX_SIZE ? ORANGEFS_GETATTR_SIZE : 0); | |
5db11c21 | 635 | if (ret == 0) { |
a528d35e | 636 | generic_fillattr(inode, stat); |
a7d3e78a | 637 | |
5db11c21 | 638 | /* override block size reported to stat */ |
5678b5d6 CH |
639 | if (!(request_mask & STATX_SIZE)) |
640 | stat->result_mask &= ~STATX_SIZE; | |
7f54910f MB |
641 | |
642 | stat->attributes_mask = STATX_ATTR_IMMUTABLE | | |
643 | STATX_ATTR_APPEND; | |
644 | if (inode->i_flags & S_IMMUTABLE) | |
645 | stat->attributes |= STATX_ATTR_IMMUTABLE; | |
646 | if (inode->i_flags & S_APPEND) | |
647 | stat->attributes |= STATX_ATTR_APPEND; | |
5db11c21 MM |
648 | } |
649 | return ret; | |
650 | } | |
651 | ||
933287da MB |
652 | int orangefs_permission(struct inode *inode, int mask) |
653 | { | |
654 | int ret; | |
655 | ||
656 | if (mask & MAY_NOT_BLOCK) | |
657 | return -ECHILD; | |
658 | ||
659 | gossip_debug(GOSSIP_INODE_DEBUG, "%s: refreshing\n", __func__); | |
660 | ||
661 | /* Make sure the permission (and other common attrs) are up to date. */ | |
8b60785c | 662 | ret = orangefs_inode_getattr(inode, 0); |
933287da MB |
663 | if (ret < 0) |
664 | return ret; | |
665 | ||
666 | return generic_permission(inode, mask); | |
667 | } | |
668 | ||
95582b00 | 669 | int orangefs_update_time(struct inode *inode, struct timespec64 *time, int flags) |
a55f2d86 MB |
670 | { |
671 | struct iattr iattr; | |
672 | gossip_debug(GOSSIP_INODE_DEBUG, "orangefs_update_time: %pU\n", | |
673 | get_khandle_from_ino(inode)); | |
674 | generic_update_time(inode, time, flags); | |
675 | memset(&iattr, 0, sizeof iattr); | |
676 | if (flags & S_ATIME) | |
677 | iattr.ia_valid |= ATTR_ATIME; | |
678 | if (flags & S_CTIME) | |
679 | iattr.ia_valid |= ATTR_CTIME; | |
680 | if (flags & S_MTIME) | |
681 | iattr.ia_valid |= ATTR_MTIME; | |
afd9fb2a | 682 | return __orangefs_setattr(inode, &iattr); |
a55f2d86 MB |
683 | } |
684 | ||
95f5f88f | 685 | /* ORANGEFS2 implementation of VFS inode operations for files */ |
bdd6f083 | 686 | static const struct inode_operations orangefs_file_inode_operations = { |
8bb8aefd YL |
687 | .get_acl = orangefs_get_acl, |
688 | .set_acl = orangefs_set_acl, | |
689 | .setattr = orangefs_setattr, | |
690 | .getattr = orangefs_getattr, | |
8bb8aefd | 691 | .listxattr = orangefs_listxattr, |
933287da | 692 | .permission = orangefs_permission, |
a55f2d86 | 693 | .update_time = orangefs_update_time, |
5db11c21 MM |
694 | }; |
695 | ||
8bb8aefd | 696 | static int orangefs_init_iops(struct inode *inode) |
5db11c21 | 697 | { |
8bb8aefd | 698 | inode->i_mapping->a_ops = &orangefs_address_operations; |
5db11c21 MM |
699 | |
700 | switch (inode->i_mode & S_IFMT) { | |
701 | case S_IFREG: | |
8bb8aefd YL |
702 | inode->i_op = &orangefs_file_inode_operations; |
703 | inode->i_fop = &orangefs_file_operations; | |
5db11c21 MM |
704 | break; |
705 | case S_IFLNK: | |
8bb8aefd | 706 | inode->i_op = &orangefs_symlink_inode_operations; |
5db11c21 MM |
707 | break; |
708 | case S_IFDIR: | |
8bb8aefd YL |
709 | inode->i_op = &orangefs_dir_inode_operations; |
710 | inode->i_fop = &orangefs_dir_operations; | |
5db11c21 MM |
711 | break; |
712 | default: | |
713 | gossip_debug(GOSSIP_INODE_DEBUG, | |
714 | "%s: unsupported mode\n", | |
715 | __func__); | |
716 | return -EINVAL; | |
717 | } | |
718 | ||
719 | return 0; | |
720 | } | |
721 | ||
722 | /* | |
95f5f88f MM |
723 | * Given an ORANGEFS object identifier (fsid, handle), convert it into |
724 | * a ino_t type that will be used as a hash-index from where the handle will | |
5db11c21 MM |
725 | * be searched for in the VFS hash table of inodes. |
726 | */ | |
8bb8aefd | 727 | static inline ino_t orangefs_handle_hash(struct orangefs_object_kref *ref) |
5db11c21 MM |
728 | { |
729 | if (!ref) | |
730 | return 0; | |
8bb8aefd | 731 | return orangefs_khandle_to_ino(&(ref->khandle)); |
5db11c21 MM |
732 | } |
733 | ||
734 | /* | |
735 | * Called to set up an inode from iget5_locked. | |
736 | */ | |
8bb8aefd | 737 | static int orangefs_set_inode(struct inode *inode, void *data) |
5db11c21 | 738 | { |
8bb8aefd | 739 | struct orangefs_object_kref *ref = (struct orangefs_object_kref *) data; |
a4c680a0 MB |
740 | ORANGEFS_I(inode)->refn.fs_id = ref->fs_id; |
741 | ORANGEFS_I(inode)->refn.khandle = ref->khandle; | |
afd9fb2a | 742 | ORANGEFS_I(inode)->attr_valid = 0; |
fc2e2e9c | 743 | hash_init(ORANGEFS_I(inode)->xattr_cache); |
5db11c21 MM |
744 | return 0; |
745 | } | |
746 | ||
747 | /* | |
748 | * Called to determine if handles match. | |
749 | */ | |
8bb8aefd | 750 | static int orangefs_test_inode(struct inode *inode, void *data) |
5db11c21 | 751 | { |
8bb8aefd YL |
752 | struct orangefs_object_kref *ref = (struct orangefs_object_kref *) data; |
753 | struct orangefs_inode_s *orangefs_inode = NULL; | |
5db11c21 | 754 | |
8bb8aefd | 755 | orangefs_inode = ORANGEFS_I(inode); |
95f5f88f MM |
756 | /* test handles and fs_ids... */ |
757 | return (!ORANGEFS_khandle_cmp(&(orangefs_inode->refn.khandle), | |
758 | &(ref->khandle)) && | |
759 | orangefs_inode->refn.fs_id == ref->fs_id); | |
5db11c21 MM |
760 | } |
761 | ||
762 | /* | |
8bb8aefd | 763 | * Front-end to lookup the inode-cache maintained by the VFS using the ORANGEFS |
5db11c21 MM |
764 | * file handle. |
765 | * | |
766 | * @sb: the file system super block instance. | |
95f5f88f | 767 | * @ref: The ORANGEFS object for which we are trying to locate an inode. |
5db11c21 | 768 | */ |
95f5f88f MM |
769 | struct inode *orangefs_iget(struct super_block *sb, |
770 | struct orangefs_object_kref *ref) | |
5db11c21 MM |
771 | { |
772 | struct inode *inode = NULL; | |
773 | unsigned long hash; | |
774 | int error; | |
775 | ||
8bb8aefd | 776 | hash = orangefs_handle_hash(ref); |
95f5f88f MM |
777 | inode = iget5_locked(sb, |
778 | hash, | |
779 | orangefs_test_inode, | |
780 | orangefs_set_inode, | |
781 | ref); | |
b5d72cdc MM |
782 | |
783 | if (!inode) | |
784 | return ERR_PTR(-ENOMEM); | |
785 | ||
786 | if (!(inode->i_state & I_NEW)) | |
5db11c21 MM |
787 | return inode; |
788 | ||
8b60785c | 789 | error = orangefs_inode_getattr(inode, ORANGEFS_GETATTR_NEW); |
5db11c21 MM |
790 | if (error) { |
791 | iget_failed(inode); | |
792 | return ERR_PTR(error); | |
793 | } | |
794 | ||
795 | inode->i_ino = hash; /* needed for stat etc */ | |
8bb8aefd | 796 | orangefs_init_iops(inode); |
5db11c21 MM |
797 | unlock_new_inode(inode); |
798 | ||
799 | gossip_debug(GOSSIP_INODE_DEBUG, | |
800 | "iget handle %pU, fsid %d hash %ld i_ino %lu\n", | |
801 | &ref->khandle, | |
802 | ref->fs_id, | |
803 | hash, | |
804 | inode->i_ino); | |
805 | ||
806 | return inode; | |
807 | } | |
808 | ||
809 | /* | |
810 | * Allocate an inode for a newly created file and insert it into the inode hash. | |
811 | */ | |
8bb8aefd YL |
812 | struct inode *orangefs_new_inode(struct super_block *sb, struct inode *dir, |
813 | int mode, dev_t dev, struct orangefs_object_kref *ref) | |
5db11c21 | 814 | { |
8bb8aefd | 815 | unsigned long hash = orangefs_handle_hash(ref); |
5db11c21 MM |
816 | struct inode *inode; |
817 | int error; | |
818 | ||
819 | gossip_debug(GOSSIP_INODE_DEBUG, | |
5253487e MM |
820 | "%s:(sb is %p | MAJOR(dev)=%u | MINOR(dev)=%u mode=%o)\n", |
821 | __func__, | |
5db11c21 MM |
822 | sb, |
823 | MAJOR(dev), | |
824 | MINOR(dev), | |
825 | mode); | |
826 | ||
827 | inode = new_inode(sb); | |
828 | if (!inode) | |
56249998 | 829 | return ERR_PTR(-ENOMEM); |
5db11c21 | 830 | |
8bb8aefd | 831 | orangefs_set_inode(inode, ref); |
5db11c21 MM |
832 | inode->i_ino = hash; /* needed for stat etc */ |
833 | ||
8b60785c | 834 | error = orangefs_inode_getattr(inode, ORANGEFS_GETATTR_NEW); |
5db11c21 MM |
835 | if (error) |
836 | goto out_iput; | |
837 | ||
8bb8aefd | 838 | orangefs_init_iops(inode); |
5db11c21 MM |
839 | inode->i_rdev = dev; |
840 | ||
8bb8aefd | 841 | error = insert_inode_locked4(inode, hash, orangefs_test_inode, ref); |
5db11c21 MM |
842 | if (error < 0) |
843 | goto out_iput; | |
844 | ||
845 | gossip_debug(GOSSIP_INODE_DEBUG, | |
846 | "Initializing ACL's for inode %pU\n", | |
847 | get_khandle_from_ino(inode)); | |
8bb8aefd | 848 | orangefs_init_acl(inode, dir); |
5db11c21 MM |
849 | return inode; |
850 | ||
851 | out_iput: | |
852 | iput(inode); | |
853 | return ERR_PTR(error); | |
854 | } |