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ccd979bd MF |
1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * file.c | |
5 | * | |
6 | * File open, close, extend, truncate | |
7 | * | |
8 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public | |
12 | * License as published by the Free Software Foundation; either | |
13 | * version 2 of the License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public | |
21 | * License along with this program; if not, write to the | |
22 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | * Boston, MA 021110-1307, USA. | |
24 | */ | |
25 | ||
16f7e0fe | 26 | #include <linux/capability.h> |
ccd979bd MF |
27 | #include <linux/fs.h> |
28 | #include <linux/types.h> | |
29 | #include <linux/slab.h> | |
30 | #include <linux/highmem.h> | |
31 | #include <linux/pagemap.h> | |
32 | #include <linux/uio.h> | |
e2057c5a | 33 | #include <linux/sched.h> |
d6b29d7c | 34 | #include <linux/splice.h> |
7f1a37e3 | 35 | #include <linux/mount.h> |
9517bac6 | 36 | #include <linux/writeback.h> |
385820a3 | 37 | #include <linux/falloc.h> |
a90714c1 | 38 | #include <linux/quotaops.h> |
ccd979bd MF |
39 | |
40 | #define MLOG_MASK_PREFIX ML_INODE | |
41 | #include <cluster/masklog.h> | |
42 | ||
43 | #include "ocfs2.h" | |
44 | ||
45 | #include "alloc.h" | |
46 | #include "aops.h" | |
47 | #include "dir.h" | |
48 | #include "dlmglue.h" | |
49 | #include "extent_map.h" | |
50 | #include "file.h" | |
51 | #include "sysfile.h" | |
52 | #include "inode.h" | |
ca4d147e | 53 | #include "ioctl.h" |
ccd979bd | 54 | #include "journal.h" |
53fc622b | 55 | #include "locks.h" |
ccd979bd MF |
56 | #include "mmap.h" |
57 | #include "suballoc.h" | |
58 | #include "super.h" | |
cf1d6c76 | 59 | #include "xattr.h" |
23fc2702 | 60 | #include "acl.h" |
a90714c1 | 61 | #include "quota.h" |
ccd979bd MF |
62 | |
63 | #include "buffer_head_io.h" | |
64 | ||
65 | static int ocfs2_sync_inode(struct inode *inode) | |
66 | { | |
67 | filemap_fdatawrite(inode->i_mapping); | |
68 | return sync_mapping_buffers(inode->i_mapping); | |
69 | } | |
70 | ||
53fc622b MF |
71 | static int ocfs2_init_file_private(struct inode *inode, struct file *file) |
72 | { | |
73 | struct ocfs2_file_private *fp; | |
74 | ||
75 | fp = kzalloc(sizeof(struct ocfs2_file_private), GFP_KERNEL); | |
76 | if (!fp) | |
77 | return -ENOMEM; | |
78 | ||
79 | fp->fp_file = file; | |
80 | mutex_init(&fp->fp_mutex); | |
81 | ocfs2_file_lock_res_init(&fp->fp_flock, fp); | |
82 | file->private_data = fp; | |
83 | ||
84 | return 0; | |
85 | } | |
86 | ||
87 | static void ocfs2_free_file_private(struct inode *inode, struct file *file) | |
88 | { | |
89 | struct ocfs2_file_private *fp = file->private_data; | |
90 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
91 | ||
92 | if (fp) { | |
93 | ocfs2_simple_drop_lockres(osb, &fp->fp_flock); | |
94 | ocfs2_lock_res_free(&fp->fp_flock); | |
95 | kfree(fp); | |
96 | file->private_data = NULL; | |
97 | } | |
98 | } | |
99 | ||
ccd979bd MF |
100 | static int ocfs2_file_open(struct inode *inode, struct file *file) |
101 | { | |
102 | int status; | |
103 | int mode = file->f_flags; | |
104 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
105 | ||
106 | mlog_entry("(0x%p, 0x%p, '%.*s')\n", inode, file, | |
d28c9174 | 107 | file->f_path.dentry->d_name.len, file->f_path.dentry->d_name.name); |
ccd979bd MF |
108 | |
109 | spin_lock(&oi->ip_lock); | |
110 | ||
111 | /* Check that the inode hasn't been wiped from disk by another | |
112 | * node. If it hasn't then we're safe as long as we hold the | |
113 | * spin lock until our increment of open count. */ | |
114 | if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED) { | |
115 | spin_unlock(&oi->ip_lock); | |
116 | ||
117 | status = -ENOENT; | |
118 | goto leave; | |
119 | } | |
120 | ||
121 | if (mode & O_DIRECT) | |
122 | oi->ip_flags |= OCFS2_INODE_OPEN_DIRECT; | |
123 | ||
124 | oi->ip_open_count++; | |
125 | spin_unlock(&oi->ip_lock); | |
53fc622b MF |
126 | |
127 | status = ocfs2_init_file_private(inode, file); | |
128 | if (status) { | |
129 | /* | |
130 | * We want to set open count back if we're failing the | |
131 | * open. | |
132 | */ | |
133 | spin_lock(&oi->ip_lock); | |
134 | oi->ip_open_count--; | |
135 | spin_unlock(&oi->ip_lock); | |
136 | } | |
137 | ||
ccd979bd MF |
138 | leave: |
139 | mlog_exit(status); | |
140 | return status; | |
141 | } | |
142 | ||
143 | static int ocfs2_file_release(struct inode *inode, struct file *file) | |
144 | { | |
145 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
146 | ||
147 | mlog_entry("(0x%p, 0x%p, '%.*s')\n", inode, file, | |
d28c9174 JS |
148 | file->f_path.dentry->d_name.len, |
149 | file->f_path.dentry->d_name.name); | |
ccd979bd MF |
150 | |
151 | spin_lock(&oi->ip_lock); | |
152 | if (!--oi->ip_open_count) | |
153 | oi->ip_flags &= ~OCFS2_INODE_OPEN_DIRECT; | |
154 | spin_unlock(&oi->ip_lock); | |
155 | ||
53fc622b MF |
156 | ocfs2_free_file_private(inode, file); |
157 | ||
ccd979bd MF |
158 | mlog_exit(0); |
159 | ||
160 | return 0; | |
161 | } | |
162 | ||
53fc622b MF |
163 | static int ocfs2_dir_open(struct inode *inode, struct file *file) |
164 | { | |
165 | return ocfs2_init_file_private(inode, file); | |
166 | } | |
167 | ||
168 | static int ocfs2_dir_release(struct inode *inode, struct file *file) | |
169 | { | |
170 | ocfs2_free_file_private(inode, file); | |
171 | return 0; | |
172 | } | |
173 | ||
ccd979bd MF |
174 | static int ocfs2_sync_file(struct file *file, |
175 | struct dentry *dentry, | |
176 | int datasync) | |
177 | { | |
178 | int err = 0; | |
179 | journal_t *journal; | |
180 | struct inode *inode = dentry->d_inode; | |
181 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
182 | ||
183 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", file, dentry, datasync, | |
184 | dentry->d_name.len, dentry->d_name.name); | |
185 | ||
186 | err = ocfs2_sync_inode(dentry->d_inode); | |
187 | if (err) | |
188 | goto bail; | |
189 | ||
e04cc15f HH |
190 | if (datasync && !(inode->i_state & I_DIRTY_DATASYNC)) |
191 | goto bail; | |
192 | ||
ccd979bd | 193 | journal = osb->journal->j_journal; |
2b4e30fb | 194 | err = jbd2_journal_force_commit(journal); |
ccd979bd MF |
195 | |
196 | bail: | |
197 | mlog_exit(err); | |
198 | ||
199 | return (err < 0) ? -EIO : 0; | |
200 | } | |
201 | ||
7f1a37e3 TY |
202 | int ocfs2_should_update_atime(struct inode *inode, |
203 | struct vfsmount *vfsmnt) | |
204 | { | |
205 | struct timespec now; | |
206 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
207 | ||
208 | if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb)) | |
209 | return 0; | |
210 | ||
211 | if ((inode->i_flags & S_NOATIME) || | |
212 | ((inode->i_sb->s_flags & MS_NODIRATIME) && S_ISDIR(inode->i_mode))) | |
213 | return 0; | |
214 | ||
6c2aad05 MF |
215 | /* |
216 | * We can be called with no vfsmnt structure - NFSD will | |
217 | * sometimes do this. | |
218 | * | |
219 | * Note that our action here is different than touch_atime() - | |
220 | * if we can't tell whether this is a noatime mount, then we | |
221 | * don't know whether to trust the value of s_atime_quantum. | |
222 | */ | |
223 | if (vfsmnt == NULL) | |
224 | return 0; | |
225 | ||
7f1a37e3 TY |
226 | if ((vfsmnt->mnt_flags & MNT_NOATIME) || |
227 | ((vfsmnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode))) | |
228 | return 0; | |
229 | ||
7e913c53 MF |
230 | if (vfsmnt->mnt_flags & MNT_RELATIME) { |
231 | if ((timespec_compare(&inode->i_atime, &inode->i_mtime) <= 0) || | |
232 | (timespec_compare(&inode->i_atime, &inode->i_ctime) <= 0)) | |
233 | return 1; | |
234 | ||
235 | return 0; | |
236 | } | |
237 | ||
7f1a37e3 TY |
238 | now = CURRENT_TIME; |
239 | if ((now.tv_sec - inode->i_atime.tv_sec <= osb->s_atime_quantum)) | |
240 | return 0; | |
241 | else | |
242 | return 1; | |
243 | } | |
244 | ||
245 | int ocfs2_update_inode_atime(struct inode *inode, | |
246 | struct buffer_head *bh) | |
247 | { | |
248 | int ret; | |
249 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
250 | handle_t *handle; | |
c11e9faf | 251 | struct ocfs2_dinode *di = (struct ocfs2_dinode *) bh->b_data; |
7f1a37e3 TY |
252 | |
253 | mlog_entry_void(); | |
254 | ||
255 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); | |
fa38e92c JK |
256 | if (IS_ERR(handle)) { |
257 | ret = PTR_ERR(handle); | |
7f1a37e3 TY |
258 | mlog_errno(ret); |
259 | goto out; | |
260 | } | |
261 | ||
13723d00 JB |
262 | ret = ocfs2_journal_access_di(handle, inode, bh, |
263 | OCFS2_JOURNAL_ACCESS_WRITE); | |
c11e9faf MF |
264 | if (ret) { |
265 | mlog_errno(ret); | |
266 | goto out_commit; | |
267 | } | |
268 | ||
269 | /* | |
270 | * Don't use ocfs2_mark_inode_dirty() here as we don't always | |
271 | * have i_mutex to guard against concurrent changes to other | |
272 | * inode fields. | |
273 | */ | |
7f1a37e3 | 274 | inode->i_atime = CURRENT_TIME; |
c11e9faf MF |
275 | di->i_atime = cpu_to_le64(inode->i_atime.tv_sec); |
276 | di->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); | |
277 | ||
278 | ret = ocfs2_journal_dirty(handle, bh); | |
7f1a37e3 TY |
279 | if (ret < 0) |
280 | mlog_errno(ret); | |
281 | ||
c11e9faf | 282 | out_commit: |
7f1a37e3 TY |
283 | ocfs2_commit_trans(OCFS2_SB(inode->i_sb), handle); |
284 | out: | |
285 | mlog_exit(ret); | |
286 | return ret; | |
287 | } | |
288 | ||
6cb129f5 AB |
289 | static int ocfs2_set_inode_size(handle_t *handle, |
290 | struct inode *inode, | |
291 | struct buffer_head *fe_bh, | |
292 | u64 new_i_size) | |
ccd979bd MF |
293 | { |
294 | int status; | |
295 | ||
296 | mlog_entry_void(); | |
297 | i_size_write(inode, new_i_size); | |
8110b073 | 298 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd MF |
299 | inode->i_ctime = inode->i_mtime = CURRENT_TIME; |
300 | ||
301 | status = ocfs2_mark_inode_dirty(handle, inode, fe_bh); | |
302 | if (status < 0) { | |
303 | mlog_errno(status); | |
304 | goto bail; | |
305 | } | |
306 | ||
307 | bail: | |
308 | mlog_exit(status); | |
309 | return status; | |
310 | } | |
311 | ||
9e33d69f JK |
312 | int ocfs2_simple_size_update(struct inode *inode, |
313 | struct buffer_head *di_bh, | |
314 | u64 new_i_size) | |
ccd979bd MF |
315 | { |
316 | int ret; | |
317 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
1fabe148 | 318 | handle_t *handle = NULL; |
ccd979bd | 319 | |
65eff9cc | 320 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); |
fa38e92c JK |
321 | if (IS_ERR(handle)) { |
322 | ret = PTR_ERR(handle); | |
ccd979bd MF |
323 | mlog_errno(ret); |
324 | goto out; | |
325 | } | |
326 | ||
327 | ret = ocfs2_set_inode_size(handle, inode, di_bh, | |
328 | new_i_size); | |
329 | if (ret < 0) | |
330 | mlog_errno(ret); | |
331 | ||
02dc1af4 | 332 | ocfs2_commit_trans(osb, handle); |
ccd979bd MF |
333 | out: |
334 | return ret; | |
335 | } | |
336 | ||
337 | static int ocfs2_orphan_for_truncate(struct ocfs2_super *osb, | |
338 | struct inode *inode, | |
339 | struct buffer_head *fe_bh, | |
340 | u64 new_i_size) | |
341 | { | |
342 | int status; | |
1fabe148 | 343 | handle_t *handle; |
60b11392 | 344 | struct ocfs2_dinode *di; |
35edec1d | 345 | u64 cluster_bytes; |
ccd979bd MF |
346 | |
347 | mlog_entry_void(); | |
348 | ||
349 | /* TODO: This needs to actually orphan the inode in this | |
350 | * transaction. */ | |
351 | ||
65eff9cc | 352 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); |
ccd979bd MF |
353 | if (IS_ERR(handle)) { |
354 | status = PTR_ERR(handle); | |
355 | mlog_errno(status); | |
356 | goto out; | |
357 | } | |
358 | ||
13723d00 JB |
359 | status = ocfs2_journal_access_di(handle, inode, fe_bh, |
360 | OCFS2_JOURNAL_ACCESS_WRITE); | |
60b11392 MF |
361 | if (status < 0) { |
362 | mlog_errno(status); | |
363 | goto out_commit; | |
364 | } | |
365 | ||
366 | /* | |
367 | * Do this before setting i_size. | |
368 | */ | |
35edec1d MF |
369 | cluster_bytes = ocfs2_align_bytes_to_clusters(inode->i_sb, new_i_size); |
370 | status = ocfs2_zero_range_for_truncate(inode, handle, new_i_size, | |
371 | cluster_bytes); | |
60b11392 MF |
372 | if (status) { |
373 | mlog_errno(status); | |
374 | goto out_commit; | |
375 | } | |
376 | ||
377 | i_size_write(inode, new_i_size); | |
60b11392 MF |
378 | inode->i_ctime = inode->i_mtime = CURRENT_TIME; |
379 | ||
380 | di = (struct ocfs2_dinode *) fe_bh->b_data; | |
381 | di->i_size = cpu_to_le64(new_i_size); | |
382 | di->i_ctime = di->i_mtime = cpu_to_le64(inode->i_ctime.tv_sec); | |
383 | di->i_ctime_nsec = di->i_mtime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
384 | ||
385 | status = ocfs2_journal_dirty(handle, fe_bh); | |
ccd979bd MF |
386 | if (status < 0) |
387 | mlog_errno(status); | |
388 | ||
60b11392 | 389 | out_commit: |
02dc1af4 | 390 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 391 | out: |
60b11392 | 392 | |
ccd979bd MF |
393 | mlog_exit(status); |
394 | return status; | |
395 | } | |
396 | ||
397 | static int ocfs2_truncate_file(struct inode *inode, | |
398 | struct buffer_head *di_bh, | |
399 | u64 new_i_size) | |
400 | { | |
401 | int status = 0; | |
402 | struct ocfs2_dinode *fe = NULL; | |
403 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
404 | struct ocfs2_truncate_context *tc = NULL; | |
405 | ||
b0697053 MF |
406 | mlog_entry("(inode = %llu, new_i_size = %llu\n", |
407 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
408 | (unsigned long long)new_i_size); | |
ccd979bd | 409 | |
b657c95c JB |
410 | /* We trust di_bh because it comes from ocfs2_inode_lock(), which |
411 | * already validated it */ | |
ccd979bd | 412 | fe = (struct ocfs2_dinode *) di_bh->b_data; |
ccd979bd MF |
413 | |
414 | mlog_bug_on_msg(le64_to_cpu(fe->i_size) != i_size_read(inode), | |
b0697053 MF |
415 | "Inode %llu, inode i_size = %lld != di " |
416 | "i_size = %llu, i_flags = 0x%x\n", | |
417 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
ccd979bd | 418 | i_size_read(inode), |
b0697053 MF |
419 | (unsigned long long)le64_to_cpu(fe->i_size), |
420 | le32_to_cpu(fe->i_flags)); | |
ccd979bd MF |
421 | |
422 | if (new_i_size > le64_to_cpu(fe->i_size)) { | |
b0697053 MF |
423 | mlog(0, "asked to truncate file with size (%llu) to size (%llu)!\n", |
424 | (unsigned long long)le64_to_cpu(fe->i_size), | |
425 | (unsigned long long)new_i_size); | |
ccd979bd MF |
426 | status = -EINVAL; |
427 | mlog_errno(status); | |
428 | goto bail; | |
429 | } | |
430 | ||
b0697053 MF |
431 | mlog(0, "inode %llu, i_size = %llu, new_i_size = %llu\n", |
432 | (unsigned long long)le64_to_cpu(fe->i_blkno), | |
433 | (unsigned long long)le64_to_cpu(fe->i_size), | |
434 | (unsigned long long)new_i_size); | |
ccd979bd MF |
435 | |
436 | /* lets handle the simple truncate cases before doing any more | |
437 | * cluster locking. */ | |
438 | if (new_i_size == le64_to_cpu(fe->i_size)) | |
439 | goto bail; | |
440 | ||
2e89b2e4 MF |
441 | down_write(&OCFS2_I(inode)->ip_alloc_sem); |
442 | ||
c934a92d MF |
443 | /* |
444 | * The inode lock forced other nodes to sync and drop their | |
445 | * pages, which (correctly) happens even if we have a truncate | |
446 | * without allocation change - ocfs2 cluster sizes can be much | |
447 | * greater than page size, so we have to truncate them | |
448 | * anyway. | |
449 | */ | |
2e89b2e4 MF |
450 | unmap_mapping_range(inode->i_mapping, new_i_size + PAGE_SIZE - 1, 0, 1); |
451 | truncate_inode_pages(inode->i_mapping, new_i_size); | |
452 | ||
1afc32b9 MF |
453 | if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) { |
454 | status = ocfs2_truncate_inline(inode, di_bh, new_i_size, | |
b1967d0e | 455 | i_size_read(inode), 1); |
1afc32b9 MF |
456 | if (status) |
457 | mlog_errno(status); | |
458 | ||
c934a92d | 459 | goto bail_unlock_sem; |
1afc32b9 MF |
460 | } |
461 | ||
ccd979bd MF |
462 | /* alright, we're going to need to do a full blown alloc size |
463 | * change. Orphan the inode so that recovery can complete the | |
464 | * truncate if necessary. This does the task of marking | |
465 | * i_size. */ | |
466 | status = ocfs2_orphan_for_truncate(osb, inode, di_bh, new_i_size); | |
467 | if (status < 0) { | |
468 | mlog_errno(status); | |
c934a92d | 469 | goto bail_unlock_sem; |
ccd979bd MF |
470 | } |
471 | ||
472 | status = ocfs2_prepare_truncate(osb, inode, di_bh, &tc); | |
473 | if (status < 0) { | |
474 | mlog_errno(status); | |
c934a92d | 475 | goto bail_unlock_sem; |
ccd979bd MF |
476 | } |
477 | ||
478 | status = ocfs2_commit_truncate(osb, inode, di_bh, tc); | |
479 | if (status < 0) { | |
480 | mlog_errno(status); | |
c934a92d | 481 | goto bail_unlock_sem; |
ccd979bd MF |
482 | } |
483 | ||
484 | /* TODO: orphan dir cleanup here. */ | |
c934a92d | 485 | bail_unlock_sem: |
2e89b2e4 MF |
486 | up_write(&OCFS2_I(inode)->ip_alloc_sem); |
487 | ||
ccd979bd MF |
488 | bail: |
489 | ||
490 | mlog_exit(status); | |
491 | return status; | |
492 | } | |
493 | ||
494 | /* | |
0eb8d47e | 495 | * extend file allocation only here. |
ccd979bd MF |
496 | * we'll update all the disk stuff, and oip->alloc_size |
497 | * | |
498 | * expect stuff to be locked, a transaction started and enough data / | |
499 | * metadata reservations in the contexts. | |
500 | * | |
501 | * Will return -EAGAIN, and a reason if a restart is needed. | |
502 | * If passed in, *reason will always be set, even in error. | |
503 | */ | |
0eb8d47e TM |
504 | int ocfs2_add_inode_data(struct ocfs2_super *osb, |
505 | struct inode *inode, | |
506 | u32 *logical_offset, | |
507 | u32 clusters_to_add, | |
508 | int mark_unwritten, | |
509 | struct buffer_head *fe_bh, | |
510 | handle_t *handle, | |
511 | struct ocfs2_alloc_context *data_ac, | |
512 | struct ocfs2_alloc_context *meta_ac, | |
513 | enum ocfs2_alloc_restarted *reason_ret) | |
ccd979bd | 514 | { |
f99b9b7c JB |
515 | int ret; |
516 | struct ocfs2_extent_tree et; | |
ccd979bd | 517 | |
8d6220d6 | 518 | ocfs2_init_dinode_extent_tree(&et, inode, fe_bh); |
f99b9b7c | 519 | ret = ocfs2_add_clusters_in_btree(osb, inode, logical_offset, |
0eb8d47e | 520 | clusters_to_add, mark_unwritten, |
f99b9b7c JB |
521 | &et, handle, |
522 | data_ac, meta_ac, reason_ret); | |
f99b9b7c JB |
523 | |
524 | return ret; | |
ccd979bd MF |
525 | } |
526 | ||
2ae99a60 MF |
527 | static int __ocfs2_extend_allocation(struct inode *inode, u32 logical_start, |
528 | u32 clusters_to_add, int mark_unwritten) | |
ccd979bd MF |
529 | { |
530 | int status = 0; | |
531 | int restart_func = 0; | |
abf8b156 | 532 | int credits; |
2ae99a60 | 533 | u32 prev_clusters; |
ccd979bd MF |
534 | struct buffer_head *bh = NULL; |
535 | struct ocfs2_dinode *fe = NULL; | |
1fabe148 | 536 | handle_t *handle = NULL; |
ccd979bd MF |
537 | struct ocfs2_alloc_context *data_ac = NULL; |
538 | struct ocfs2_alloc_context *meta_ac = NULL; | |
539 | enum ocfs2_alloc_restarted why; | |
540 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
f99b9b7c | 541 | struct ocfs2_extent_tree et; |
a90714c1 | 542 | int did_quota = 0; |
ccd979bd MF |
543 | |
544 | mlog_entry("(clusters_to_add = %u)\n", clusters_to_add); | |
545 | ||
dcd0538f MF |
546 | /* |
547 | * This function only exists for file systems which don't | |
548 | * support holes. | |
549 | */ | |
2ae99a60 | 550 | BUG_ON(mark_unwritten && !ocfs2_sparse_alloc(osb)); |
dcd0538f | 551 | |
b657c95c | 552 | status = ocfs2_read_inode_block(inode, &bh); |
ccd979bd MF |
553 | if (status < 0) { |
554 | mlog_errno(status); | |
555 | goto leave; | |
556 | } | |
ccd979bd | 557 | fe = (struct ocfs2_dinode *) bh->b_data; |
ccd979bd MF |
558 | |
559 | restart_all: | |
560 | BUG_ON(le32_to_cpu(fe->i_clusters) != OCFS2_I(inode)->ip_clusters); | |
561 | ||
e7d4cb6b TM |
562 | mlog(0, "extend inode %llu, i_size = %lld, di->i_clusters = %u, " |
563 | "clusters_to_add = %u\n", | |
564 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
565 | (long long)i_size_read(inode), le32_to_cpu(fe->i_clusters), | |
566 | clusters_to_add); | |
8d6220d6 | 567 | ocfs2_init_dinode_extent_tree(&et, inode, bh); |
f99b9b7c JB |
568 | status = ocfs2_lock_allocators(inode, &et, clusters_to_add, 0, |
569 | &data_ac, &meta_ac); | |
9517bac6 MF |
570 | if (status) { |
571 | mlog_errno(status); | |
572 | goto leave; | |
573 | } | |
574 | ||
811f933d TM |
575 | credits = ocfs2_calc_extend_credits(osb->sb, &fe->id2.i_list, |
576 | clusters_to_add); | |
65eff9cc | 577 | handle = ocfs2_start_trans(osb, credits); |
ccd979bd MF |
578 | if (IS_ERR(handle)) { |
579 | status = PTR_ERR(handle); | |
580 | handle = NULL; | |
581 | mlog_errno(status); | |
582 | goto leave; | |
583 | } | |
584 | ||
585 | restarted_transaction: | |
a90714c1 JK |
586 | if (vfs_dq_alloc_space_nodirty(inode, ocfs2_clusters_to_bytes(osb->sb, |
587 | clusters_to_add))) { | |
588 | status = -EDQUOT; | |
589 | goto leave; | |
590 | } | |
591 | did_quota = 1; | |
592 | ||
ccd979bd MF |
593 | /* reserve a write to the file entry early on - that we if we |
594 | * run out of credits in the allocation path, we can still | |
595 | * update i_size. */ | |
13723d00 JB |
596 | status = ocfs2_journal_access_di(handle, inode, bh, |
597 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd MF |
598 | if (status < 0) { |
599 | mlog_errno(status); | |
600 | goto leave; | |
601 | } | |
602 | ||
603 | prev_clusters = OCFS2_I(inode)->ip_clusters; | |
604 | ||
0eb8d47e TM |
605 | status = ocfs2_add_inode_data(osb, |
606 | inode, | |
607 | &logical_start, | |
608 | clusters_to_add, | |
609 | mark_unwritten, | |
610 | bh, | |
611 | handle, | |
612 | data_ac, | |
613 | meta_ac, | |
614 | &why); | |
ccd979bd MF |
615 | if ((status < 0) && (status != -EAGAIN)) { |
616 | if (status != -ENOSPC) | |
617 | mlog_errno(status); | |
618 | goto leave; | |
619 | } | |
620 | ||
621 | status = ocfs2_journal_dirty(handle, bh); | |
622 | if (status < 0) { | |
623 | mlog_errno(status); | |
624 | goto leave; | |
625 | } | |
626 | ||
627 | spin_lock(&OCFS2_I(inode)->ip_lock); | |
628 | clusters_to_add -= (OCFS2_I(inode)->ip_clusters - prev_clusters); | |
629 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
a90714c1 JK |
630 | /* Release unused quota reservation */ |
631 | vfs_dq_free_space(inode, | |
632 | ocfs2_clusters_to_bytes(osb->sb, clusters_to_add)); | |
633 | did_quota = 0; | |
ccd979bd MF |
634 | |
635 | if (why != RESTART_NONE && clusters_to_add) { | |
636 | if (why == RESTART_META) { | |
637 | mlog(0, "restarting function.\n"); | |
638 | restart_func = 1; | |
639 | } else { | |
640 | BUG_ON(why != RESTART_TRANS); | |
641 | ||
642 | mlog(0, "restarting transaction.\n"); | |
643 | /* TODO: This can be more intelligent. */ | |
644 | credits = ocfs2_calc_extend_credits(osb->sb, | |
811f933d | 645 | &fe->id2.i_list, |
ccd979bd | 646 | clusters_to_add); |
1fabe148 | 647 | status = ocfs2_extend_trans(handle, credits); |
ccd979bd MF |
648 | if (status < 0) { |
649 | /* handle still has to be committed at | |
650 | * this point. */ | |
651 | status = -ENOMEM; | |
652 | mlog_errno(status); | |
653 | goto leave; | |
654 | } | |
655 | goto restarted_transaction; | |
656 | } | |
657 | } | |
658 | ||
b0697053 | 659 | mlog(0, "fe: i_clusters = %u, i_size=%llu\n", |
1ca1a111 MF |
660 | le32_to_cpu(fe->i_clusters), |
661 | (unsigned long long)le64_to_cpu(fe->i_size)); | |
ccd979bd | 662 | mlog(0, "inode: ip_clusters=%u, i_size=%lld\n", |
634bf74d | 663 | OCFS2_I(inode)->ip_clusters, (long long)i_size_read(inode)); |
ccd979bd MF |
664 | |
665 | leave: | |
a90714c1 JK |
666 | if (status < 0 && did_quota) |
667 | vfs_dq_free_space(inode, | |
668 | ocfs2_clusters_to_bytes(osb->sb, clusters_to_add)); | |
ccd979bd | 669 | if (handle) { |
02dc1af4 | 670 | ocfs2_commit_trans(osb, handle); |
ccd979bd MF |
671 | handle = NULL; |
672 | } | |
673 | if (data_ac) { | |
674 | ocfs2_free_alloc_context(data_ac); | |
675 | data_ac = NULL; | |
676 | } | |
677 | if (meta_ac) { | |
678 | ocfs2_free_alloc_context(meta_ac); | |
679 | meta_ac = NULL; | |
680 | } | |
681 | if ((!status) && restart_func) { | |
682 | restart_func = 0; | |
683 | goto restart_all; | |
684 | } | |
a81cb88b MF |
685 | brelse(bh); |
686 | bh = NULL; | |
ccd979bd MF |
687 | |
688 | mlog_exit(status); | |
689 | return status; | |
690 | } | |
691 | ||
692 | /* Some parts of this taken from generic_cont_expand, which turned out | |
693 | * to be too fragile to do exactly what we need without us having to | |
4e02ed4b | 694 | * worry about recursive locking in ->write_begin() and ->write_end(). */ |
ccd979bd MF |
695 | static int ocfs2_write_zero_page(struct inode *inode, |
696 | u64 size) | |
697 | { | |
698 | struct address_space *mapping = inode->i_mapping; | |
699 | struct page *page; | |
700 | unsigned long index; | |
701 | unsigned int offset; | |
1fabe148 | 702 | handle_t *handle = NULL; |
ccd979bd MF |
703 | int ret; |
704 | ||
705 | offset = (size & (PAGE_CACHE_SIZE-1)); /* Within page */ | |
706 | /* ugh. in prepare/commit_write, if from==to==start of block, we | |
707 | ** skip the prepare. make sure we never send an offset for the start | |
708 | ** of a block | |
709 | */ | |
710 | if ((offset & (inode->i_sb->s_blocksize - 1)) == 0) { | |
711 | offset++; | |
712 | } | |
713 | index = size >> PAGE_CACHE_SHIFT; | |
714 | ||
715 | page = grab_cache_page(mapping, index); | |
716 | if (!page) { | |
717 | ret = -ENOMEM; | |
718 | mlog_errno(ret); | |
719 | goto out; | |
720 | } | |
721 | ||
53013cba | 722 | ret = ocfs2_prepare_write_nolock(inode, page, offset, offset); |
ccd979bd MF |
723 | if (ret < 0) { |
724 | mlog_errno(ret); | |
725 | goto out_unlock; | |
726 | } | |
727 | ||
728 | if (ocfs2_should_order_data(inode)) { | |
729 | handle = ocfs2_start_walk_page_trans(inode, page, offset, | |
730 | offset); | |
731 | if (IS_ERR(handle)) { | |
732 | ret = PTR_ERR(handle); | |
733 | handle = NULL; | |
734 | goto out_unlock; | |
735 | } | |
736 | } | |
737 | ||
738 | /* must not update i_size! */ | |
739 | ret = block_commit_write(page, offset, offset); | |
740 | if (ret < 0) | |
741 | mlog_errno(ret); | |
742 | else | |
743 | ret = 0; | |
744 | ||
745 | if (handle) | |
02dc1af4 | 746 | ocfs2_commit_trans(OCFS2_SB(inode->i_sb), handle); |
ccd979bd MF |
747 | out_unlock: |
748 | unlock_page(page); | |
749 | page_cache_release(page); | |
750 | out: | |
751 | return ret; | |
752 | } | |
753 | ||
754 | static int ocfs2_zero_extend(struct inode *inode, | |
755 | u64 zero_to_size) | |
756 | { | |
757 | int ret = 0; | |
758 | u64 start_off; | |
759 | struct super_block *sb = inode->i_sb; | |
760 | ||
761 | start_off = ocfs2_align_bytes_to_blocks(sb, i_size_read(inode)); | |
762 | while (start_off < zero_to_size) { | |
763 | ret = ocfs2_write_zero_page(inode, start_off); | |
764 | if (ret < 0) { | |
765 | mlog_errno(ret); | |
766 | goto out; | |
767 | } | |
768 | ||
769 | start_off += sb->s_blocksize; | |
e2057c5a MF |
770 | |
771 | /* | |
772 | * Very large extends have the potential to lock up | |
773 | * the cpu for extended periods of time. | |
774 | */ | |
775 | cond_resched(); | |
ccd979bd MF |
776 | } |
777 | ||
778 | out: | |
779 | return ret; | |
780 | } | |
781 | ||
65ed39d6 MF |
782 | int ocfs2_extend_no_holes(struct inode *inode, u64 new_i_size, u64 zero_to) |
783 | { | |
784 | int ret; | |
785 | u32 clusters_to_add; | |
786 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
787 | ||
788 | clusters_to_add = ocfs2_clusters_for_bytes(inode->i_sb, new_i_size); | |
789 | if (clusters_to_add < oi->ip_clusters) | |
790 | clusters_to_add = 0; | |
791 | else | |
792 | clusters_to_add -= oi->ip_clusters; | |
793 | ||
794 | if (clusters_to_add) { | |
795 | ret = __ocfs2_extend_allocation(inode, oi->ip_clusters, | |
796 | clusters_to_add, 0); | |
797 | if (ret) { | |
798 | mlog_errno(ret); | |
799 | goto out; | |
800 | } | |
801 | } | |
802 | ||
803 | /* | |
804 | * Call this even if we don't add any clusters to the tree. We | |
805 | * still need to zero the area between the old i_size and the | |
806 | * new i_size. | |
807 | */ | |
808 | ret = ocfs2_zero_extend(inode, zero_to); | |
809 | if (ret < 0) | |
810 | mlog_errno(ret); | |
811 | ||
812 | out: | |
813 | return ret; | |
814 | } | |
815 | ||
ccd979bd MF |
816 | static int ocfs2_extend_file(struct inode *inode, |
817 | struct buffer_head *di_bh, | |
65ed39d6 | 818 | u64 new_i_size) |
ccd979bd | 819 | { |
c934a92d | 820 | int ret = 0; |
1afc32b9 | 821 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
ccd979bd | 822 | |
65ed39d6 | 823 | BUG_ON(!di_bh); |
53013cba | 824 | |
ccd979bd MF |
825 | /* setattr sometimes calls us like this. */ |
826 | if (new_i_size == 0) | |
827 | goto out; | |
828 | ||
829 | if (i_size_read(inode) == new_i_size) | |
830 | goto out; | |
831 | BUG_ON(new_i_size < i_size_read(inode)); | |
832 | ||
1afc32b9 MF |
833 | /* |
834 | * Fall through for converting inline data, even if the fs | |
835 | * supports sparse files. | |
836 | * | |
837 | * The check for inline data here is legal - nobody can add | |
838 | * the feature since we have i_mutex. We must check it again | |
839 | * after acquiring ip_alloc_sem though, as paths like mmap | |
840 | * might have raced us to converting the inode to extents. | |
841 | */ | |
842 | if (!(oi->ip_dyn_features & OCFS2_INLINE_DATA_FL) | |
843 | && ocfs2_sparse_alloc(OCFS2_SB(inode->i_sb))) | |
3a0782d0 | 844 | goto out_update_size; |
ccd979bd | 845 | |
0effef77 | 846 | /* |
65ed39d6 MF |
847 | * The alloc sem blocks people in read/write from reading our |
848 | * allocation until we're done changing it. We depend on | |
849 | * i_mutex to block other extend/truncate calls while we're | |
850 | * here. | |
0effef77 | 851 | */ |
1afc32b9 MF |
852 | down_write(&oi->ip_alloc_sem); |
853 | ||
854 | if (oi->ip_dyn_features & OCFS2_INLINE_DATA_FL) { | |
855 | /* | |
856 | * We can optimize small extends by keeping the inodes | |
857 | * inline data. | |
858 | */ | |
859 | if (ocfs2_size_fits_inline_data(di_bh, new_i_size)) { | |
860 | up_write(&oi->ip_alloc_sem); | |
861 | goto out_update_size; | |
862 | } | |
863 | ||
864 | ret = ocfs2_convert_inline_data_to_extents(inode, di_bh); | |
865 | if (ret) { | |
866 | up_write(&oi->ip_alloc_sem); | |
867 | ||
868 | mlog_errno(ret); | |
c934a92d | 869 | goto out; |
1afc32b9 MF |
870 | } |
871 | } | |
872 | ||
873 | if (!ocfs2_sparse_alloc(OCFS2_SB(inode->i_sb))) | |
874 | ret = ocfs2_extend_no_holes(inode, new_i_size, new_i_size); | |
875 | ||
876 | up_write(&oi->ip_alloc_sem); | |
65ed39d6 | 877 | |
0effef77 MF |
878 | if (ret < 0) { |
879 | mlog_errno(ret); | |
c934a92d | 880 | goto out; |
53013cba MF |
881 | } |
882 | ||
3a0782d0 | 883 | out_update_size: |
65ed39d6 MF |
884 | ret = ocfs2_simple_size_update(inode, di_bh, new_i_size); |
885 | if (ret < 0) | |
886 | mlog_errno(ret); | |
ccd979bd MF |
887 | |
888 | out: | |
889 | return ret; | |
890 | } | |
891 | ||
892 | int ocfs2_setattr(struct dentry *dentry, struct iattr *attr) | |
893 | { | |
894 | int status = 0, size_change; | |
895 | struct inode *inode = dentry->d_inode; | |
896 | struct super_block *sb = inode->i_sb; | |
897 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
898 | struct buffer_head *bh = NULL; | |
1fabe148 | 899 | handle_t *handle = NULL; |
65bac575 JK |
900 | int qtype; |
901 | struct dquot *transfer_from[MAXQUOTAS] = { }; | |
902 | struct dquot *transfer_to[MAXQUOTAS] = { }; | |
ccd979bd MF |
903 | |
904 | mlog_entry("(0x%p, '%.*s')\n", dentry, | |
905 | dentry->d_name.len, dentry->d_name.name); | |
906 | ||
bc535809 SM |
907 | /* ensuring we don't even attempt to truncate a symlink */ |
908 | if (S_ISLNK(inode->i_mode)) | |
909 | attr->ia_valid &= ~ATTR_SIZE; | |
910 | ||
ccd979bd MF |
911 | if (attr->ia_valid & ATTR_MODE) |
912 | mlog(0, "mode change: %d\n", attr->ia_mode); | |
913 | if (attr->ia_valid & ATTR_UID) | |
914 | mlog(0, "uid change: %d\n", attr->ia_uid); | |
915 | if (attr->ia_valid & ATTR_GID) | |
916 | mlog(0, "gid change: %d\n", attr->ia_gid); | |
917 | if (attr->ia_valid & ATTR_SIZE) | |
918 | mlog(0, "size change...\n"); | |
919 | if (attr->ia_valid & (ATTR_ATIME | ATTR_MTIME | ATTR_CTIME)) | |
920 | mlog(0, "time change...\n"); | |
921 | ||
922 | #define OCFS2_VALID_ATTRS (ATTR_ATIME | ATTR_MTIME | ATTR_CTIME | ATTR_SIZE \ | |
923 | | ATTR_GID | ATTR_UID | ATTR_MODE) | |
924 | if (!(attr->ia_valid & OCFS2_VALID_ATTRS)) { | |
925 | mlog(0, "can't handle attrs: 0x%x\n", attr->ia_valid); | |
926 | return 0; | |
927 | } | |
928 | ||
929 | status = inode_change_ok(inode, attr); | |
930 | if (status) | |
931 | return status; | |
932 | ||
933 | size_change = S_ISREG(inode->i_mode) && attr->ia_valid & ATTR_SIZE; | |
934 | if (size_change) { | |
935 | status = ocfs2_rw_lock(inode, 1); | |
936 | if (status < 0) { | |
937 | mlog_errno(status); | |
938 | goto bail; | |
939 | } | |
940 | } | |
941 | ||
e63aecb6 | 942 | status = ocfs2_inode_lock(inode, &bh, 1); |
ccd979bd MF |
943 | if (status < 0) { |
944 | if (status != -ENOENT) | |
945 | mlog_errno(status); | |
946 | goto bail_unlock_rw; | |
947 | } | |
948 | ||
949 | if (size_change && attr->ia_size != i_size_read(inode)) { | |
ce76fd30 MF |
950 | if (attr->ia_size > sb->s_maxbytes) { |
951 | status = -EFBIG; | |
952 | goto bail_unlock; | |
953 | } | |
954 | ||
2b4e30fb JB |
955 | if (i_size_read(inode) > attr->ia_size) { |
956 | if (ocfs2_should_order_data(inode)) { | |
957 | status = ocfs2_begin_ordered_truncate(inode, | |
958 | attr->ia_size); | |
959 | if (status) | |
960 | goto bail_unlock; | |
961 | } | |
ccd979bd | 962 | status = ocfs2_truncate_file(inode, bh, attr->ia_size); |
2b4e30fb | 963 | } else |
65ed39d6 | 964 | status = ocfs2_extend_file(inode, bh, attr->ia_size); |
ccd979bd MF |
965 | if (status < 0) { |
966 | if (status != -ENOSPC) | |
967 | mlog_errno(status); | |
968 | status = -ENOSPC; | |
969 | goto bail_unlock; | |
970 | } | |
971 | } | |
972 | ||
a90714c1 JK |
973 | if ((attr->ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid) || |
974 | (attr->ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid)) { | |
65bac575 JK |
975 | /* |
976 | * Gather pointers to quota structures so that allocation / | |
977 | * freeing of quota structures happens here and not inside | |
978 | * vfs_dq_transfer() where we have problems with lock ordering | |
979 | */ | |
a90714c1 JK |
980 | if (attr->ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid |
981 | && OCFS2_HAS_RO_COMPAT_FEATURE(sb, | |
982 | OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) { | |
65bac575 JK |
983 | transfer_to[USRQUOTA] = dqget(sb, attr->ia_uid, |
984 | USRQUOTA); | |
985 | transfer_from[USRQUOTA] = dqget(sb, inode->i_uid, | |
986 | USRQUOTA); | |
987 | if (!transfer_to[USRQUOTA] || !transfer_from[USRQUOTA]) { | |
988 | status = -ESRCH; | |
a90714c1 | 989 | goto bail_unlock; |
65bac575 | 990 | } |
a90714c1 JK |
991 | } |
992 | if (attr->ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid | |
993 | && OCFS2_HAS_RO_COMPAT_FEATURE(sb, | |
994 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) { | |
65bac575 JK |
995 | transfer_to[GRPQUOTA] = dqget(sb, attr->ia_gid, |
996 | GRPQUOTA); | |
997 | transfer_from[GRPQUOTA] = dqget(sb, inode->i_gid, | |
998 | GRPQUOTA); | |
999 | if (!transfer_to[GRPQUOTA] || !transfer_from[GRPQUOTA]) { | |
1000 | status = -ESRCH; | |
a90714c1 | 1001 | goto bail_unlock; |
65bac575 | 1002 | } |
a90714c1 | 1003 | } |
65bac575 JK |
1004 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS + |
1005 | 2 * ocfs2_quota_trans_credits(sb)); | |
a90714c1 JK |
1006 | if (IS_ERR(handle)) { |
1007 | status = PTR_ERR(handle); | |
1008 | mlog_errno(status); | |
1009 | goto bail_unlock; | |
1010 | } | |
1011 | status = vfs_dq_transfer(inode, attr) ? -EDQUOT : 0; | |
1012 | if (status < 0) | |
1013 | goto bail_commit; | |
1014 | } else { | |
1015 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); | |
1016 | if (IS_ERR(handle)) { | |
1017 | status = PTR_ERR(handle); | |
1018 | mlog_errno(status); | |
1019 | goto bail_unlock; | |
1020 | } | |
ccd979bd MF |
1021 | } |
1022 | ||
7307de80 MF |
1023 | /* |
1024 | * This will intentionally not wind up calling vmtruncate(), | |
1025 | * since all the work for a size change has been done above. | |
1026 | * Otherwise, we could get into problems with truncate as | |
1027 | * ip_alloc_sem is used there to protect against i_size | |
1028 | * changes. | |
1029 | */ | |
ccd979bd MF |
1030 | status = inode_setattr(inode, attr); |
1031 | if (status < 0) { | |
1032 | mlog_errno(status); | |
1033 | goto bail_commit; | |
1034 | } | |
1035 | ||
1036 | status = ocfs2_mark_inode_dirty(handle, inode, bh); | |
1037 | if (status < 0) | |
1038 | mlog_errno(status); | |
1039 | ||
1040 | bail_commit: | |
02dc1af4 | 1041 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1042 | bail_unlock: |
e63aecb6 | 1043 | ocfs2_inode_unlock(inode, 1); |
ccd979bd MF |
1044 | bail_unlock_rw: |
1045 | if (size_change) | |
1046 | ocfs2_rw_unlock(inode, 1); | |
1047 | bail: | |
a81cb88b | 1048 | brelse(bh); |
ccd979bd | 1049 | |
65bac575 JK |
1050 | /* Release quota pointers in case we acquired them */ |
1051 | for (qtype = 0; qtype < MAXQUOTAS; qtype++) { | |
1052 | dqput(transfer_to[qtype]); | |
1053 | dqput(transfer_from[qtype]); | |
1054 | } | |
1055 | ||
060bc66d TY |
1056 | if (!status && attr->ia_valid & ATTR_MODE) { |
1057 | status = ocfs2_acl_chmod(inode); | |
1058 | if (status < 0) | |
1059 | mlog_errno(status); | |
1060 | } | |
1061 | ||
ccd979bd MF |
1062 | mlog_exit(status); |
1063 | return status; | |
1064 | } | |
1065 | ||
1066 | int ocfs2_getattr(struct vfsmount *mnt, | |
1067 | struct dentry *dentry, | |
1068 | struct kstat *stat) | |
1069 | { | |
1070 | struct inode *inode = dentry->d_inode; | |
1071 | struct super_block *sb = dentry->d_inode->i_sb; | |
1072 | struct ocfs2_super *osb = sb->s_fs_info; | |
1073 | int err; | |
1074 | ||
1075 | mlog_entry_void(); | |
1076 | ||
1077 | err = ocfs2_inode_revalidate(dentry); | |
1078 | if (err) { | |
1079 | if (err != -ENOENT) | |
1080 | mlog_errno(err); | |
1081 | goto bail; | |
1082 | } | |
1083 | ||
1084 | generic_fillattr(inode, stat); | |
1085 | ||
1086 | /* We set the blksize from the cluster size for performance */ | |
1087 | stat->blksize = osb->s_clustersize; | |
1088 | ||
1089 | bail: | |
1090 | mlog_exit(err); | |
1091 | ||
1092 | return err; | |
1093 | } | |
1094 | ||
e6305c43 | 1095 | int ocfs2_permission(struct inode *inode, int mask) |
d38eb8db TY |
1096 | { |
1097 | int ret; | |
1098 | ||
1099 | mlog_entry_void(); | |
1100 | ||
e63aecb6 | 1101 | ret = ocfs2_inode_lock(inode, NULL, 0); |
d38eb8db | 1102 | if (ret) { |
a9f5f707 MF |
1103 | if (ret != -ENOENT) |
1104 | mlog_errno(ret); | |
d38eb8db TY |
1105 | goto out; |
1106 | } | |
1107 | ||
23fc2702 | 1108 | ret = generic_permission(inode, mask, ocfs2_check_acl); |
d38eb8db | 1109 | |
e63aecb6 | 1110 | ocfs2_inode_unlock(inode, 0); |
d38eb8db TY |
1111 | out: |
1112 | mlog_exit(ret); | |
1113 | return ret; | |
1114 | } | |
1115 | ||
b2580103 MF |
1116 | static int __ocfs2_write_remove_suid(struct inode *inode, |
1117 | struct buffer_head *bh) | |
ccd979bd MF |
1118 | { |
1119 | int ret; | |
1fabe148 | 1120 | handle_t *handle; |
ccd979bd MF |
1121 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
1122 | struct ocfs2_dinode *di; | |
1123 | ||
b0697053 | 1124 | mlog_entry("(Inode %llu, mode 0%o)\n", |
b2580103 | 1125 | (unsigned long long)OCFS2_I(inode)->ip_blkno, inode->i_mode); |
ccd979bd | 1126 | |
65eff9cc | 1127 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); |
fa38e92c JK |
1128 | if (IS_ERR(handle)) { |
1129 | ret = PTR_ERR(handle); | |
ccd979bd MF |
1130 | mlog_errno(ret); |
1131 | goto out; | |
1132 | } | |
1133 | ||
13723d00 JB |
1134 | ret = ocfs2_journal_access_di(handle, inode, bh, |
1135 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd MF |
1136 | if (ret < 0) { |
1137 | mlog_errno(ret); | |
b2580103 | 1138 | goto out_trans; |
ccd979bd MF |
1139 | } |
1140 | ||
1141 | inode->i_mode &= ~S_ISUID; | |
1142 | if ((inode->i_mode & S_ISGID) && (inode->i_mode & S_IXGRP)) | |
1143 | inode->i_mode &= ~S_ISGID; | |
1144 | ||
1145 | di = (struct ocfs2_dinode *) bh->b_data; | |
1146 | di->i_mode = cpu_to_le16(inode->i_mode); | |
1147 | ||
1148 | ret = ocfs2_journal_dirty(handle, bh); | |
1149 | if (ret < 0) | |
1150 | mlog_errno(ret); | |
b2580103 | 1151 | |
ccd979bd | 1152 | out_trans: |
02dc1af4 | 1153 | ocfs2_commit_trans(osb, handle); |
ccd979bd MF |
1154 | out: |
1155 | mlog_exit(ret); | |
1156 | return ret; | |
1157 | } | |
1158 | ||
9517bac6 MF |
1159 | /* |
1160 | * Will look for holes and unwritten extents in the range starting at | |
1161 | * pos for count bytes (inclusive). | |
1162 | */ | |
1163 | static int ocfs2_check_range_for_holes(struct inode *inode, loff_t pos, | |
1164 | size_t count) | |
1165 | { | |
1166 | int ret = 0; | |
49cb8d2d | 1167 | unsigned int extent_flags; |
9517bac6 MF |
1168 | u32 cpos, clusters, extent_len, phys_cpos; |
1169 | struct super_block *sb = inode->i_sb; | |
1170 | ||
1171 | cpos = pos >> OCFS2_SB(sb)->s_clustersize_bits; | |
1172 | clusters = ocfs2_clusters_for_bytes(sb, pos + count) - cpos; | |
1173 | ||
1174 | while (clusters) { | |
49cb8d2d MF |
1175 | ret = ocfs2_get_clusters(inode, cpos, &phys_cpos, &extent_len, |
1176 | &extent_flags); | |
9517bac6 MF |
1177 | if (ret < 0) { |
1178 | mlog_errno(ret); | |
1179 | goto out; | |
1180 | } | |
1181 | ||
49cb8d2d | 1182 | if (phys_cpos == 0 || (extent_flags & OCFS2_EXT_UNWRITTEN)) { |
9517bac6 MF |
1183 | ret = 1; |
1184 | break; | |
1185 | } | |
1186 | ||
1187 | if (extent_len > clusters) | |
1188 | extent_len = clusters; | |
1189 | ||
1190 | clusters -= extent_len; | |
1191 | cpos += extent_len; | |
1192 | } | |
1193 | out: | |
1194 | return ret; | |
1195 | } | |
1196 | ||
b2580103 MF |
1197 | static int ocfs2_write_remove_suid(struct inode *inode) |
1198 | { | |
1199 | int ret; | |
1200 | struct buffer_head *bh = NULL; | |
b2580103 | 1201 | |
b657c95c | 1202 | ret = ocfs2_read_inode_block(inode, &bh); |
b2580103 MF |
1203 | if (ret < 0) { |
1204 | mlog_errno(ret); | |
1205 | goto out; | |
1206 | } | |
1207 | ||
1208 | ret = __ocfs2_write_remove_suid(inode, bh); | |
1209 | out: | |
1210 | brelse(bh); | |
1211 | return ret; | |
1212 | } | |
1213 | ||
2ae99a60 MF |
1214 | /* |
1215 | * Allocate enough extents to cover the region starting at byte offset | |
1216 | * start for len bytes. Existing extents are skipped, any extents | |
1217 | * added are marked as "unwritten". | |
1218 | */ | |
1219 | static int ocfs2_allocate_unwritten_extents(struct inode *inode, | |
1220 | u64 start, u64 len) | |
1221 | { | |
1222 | int ret; | |
1223 | u32 cpos, phys_cpos, clusters, alloc_size; | |
1afc32b9 MF |
1224 | u64 end = start + len; |
1225 | struct buffer_head *di_bh = NULL; | |
1226 | ||
1227 | if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) { | |
b657c95c | 1228 | ret = ocfs2_read_inode_block(inode, &di_bh); |
1afc32b9 MF |
1229 | if (ret) { |
1230 | mlog_errno(ret); | |
1231 | goto out; | |
1232 | } | |
1233 | ||
1234 | /* | |
1235 | * Nothing to do if the requested reservation range | |
1236 | * fits within the inode. | |
1237 | */ | |
1238 | if (ocfs2_size_fits_inline_data(di_bh, end)) | |
1239 | goto out; | |
1240 | ||
1241 | ret = ocfs2_convert_inline_data_to_extents(inode, di_bh); | |
1242 | if (ret) { | |
1243 | mlog_errno(ret); | |
1244 | goto out; | |
1245 | } | |
1246 | } | |
2ae99a60 MF |
1247 | |
1248 | /* | |
1249 | * We consider both start and len to be inclusive. | |
1250 | */ | |
1251 | cpos = start >> OCFS2_SB(inode->i_sb)->s_clustersize_bits; | |
1252 | clusters = ocfs2_clusters_for_bytes(inode->i_sb, start + len); | |
1253 | clusters -= cpos; | |
1254 | ||
1255 | while (clusters) { | |
1256 | ret = ocfs2_get_clusters(inode, cpos, &phys_cpos, | |
1257 | &alloc_size, NULL); | |
1258 | if (ret) { | |
1259 | mlog_errno(ret); | |
1260 | goto out; | |
1261 | } | |
1262 | ||
1263 | /* | |
1264 | * Hole or existing extent len can be arbitrary, so | |
1265 | * cap it to our own allocation request. | |
1266 | */ | |
1267 | if (alloc_size > clusters) | |
1268 | alloc_size = clusters; | |
1269 | ||
1270 | if (phys_cpos) { | |
1271 | /* | |
1272 | * We already have an allocation at this | |
1273 | * region so we can safely skip it. | |
1274 | */ | |
1275 | goto next; | |
1276 | } | |
1277 | ||
1278 | ret = __ocfs2_extend_allocation(inode, cpos, alloc_size, 1); | |
1279 | if (ret) { | |
1280 | if (ret != -ENOSPC) | |
1281 | mlog_errno(ret); | |
1282 | goto out; | |
1283 | } | |
1284 | ||
1285 | next: | |
1286 | cpos += alloc_size; | |
1287 | clusters -= alloc_size; | |
1288 | } | |
1289 | ||
1290 | ret = 0; | |
1291 | out: | |
1afc32b9 MF |
1292 | |
1293 | brelse(di_bh); | |
2ae99a60 MF |
1294 | return ret; |
1295 | } | |
1296 | ||
063c4561 MF |
1297 | /* |
1298 | * Truncate a byte range, avoiding pages within partial clusters. This | |
1299 | * preserves those pages for the zeroing code to write to. | |
1300 | */ | |
1301 | static void ocfs2_truncate_cluster_pages(struct inode *inode, u64 byte_start, | |
1302 | u64 byte_len) | |
1303 | { | |
1304 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
1305 | loff_t start, end; | |
1306 | struct address_space *mapping = inode->i_mapping; | |
1307 | ||
1308 | start = (loff_t)ocfs2_align_bytes_to_clusters(inode->i_sb, byte_start); | |
1309 | end = byte_start + byte_len; | |
1310 | end = end & ~(osb->s_clustersize - 1); | |
1311 | ||
1312 | if (start < end) { | |
1313 | unmap_mapping_range(mapping, start, end - start, 0); | |
1314 | truncate_inode_pages_range(mapping, start, end - 1); | |
1315 | } | |
1316 | } | |
1317 | ||
1318 | static int ocfs2_zero_partial_clusters(struct inode *inode, | |
1319 | u64 start, u64 len) | |
1320 | { | |
1321 | int ret = 0; | |
1322 | u64 tmpend, end = start + len; | |
1323 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
1324 | unsigned int csize = osb->s_clustersize; | |
1325 | handle_t *handle; | |
1326 | ||
1327 | /* | |
1328 | * The "start" and "end" values are NOT necessarily part of | |
1329 | * the range whose allocation is being deleted. Rather, this | |
1330 | * is what the user passed in with the request. We must zero | |
1331 | * partial clusters here. There's no need to worry about | |
1332 | * physical allocation - the zeroing code knows to skip holes. | |
1333 | */ | |
1334 | mlog(0, "byte start: %llu, end: %llu\n", | |
1335 | (unsigned long long)start, (unsigned long long)end); | |
1336 | ||
1337 | /* | |
1338 | * If both edges are on a cluster boundary then there's no | |
1339 | * zeroing required as the region is part of the allocation to | |
1340 | * be truncated. | |
1341 | */ | |
1342 | if ((start & (csize - 1)) == 0 && (end & (csize - 1)) == 0) | |
1343 | goto out; | |
1344 | ||
1345 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); | |
fa38e92c JK |
1346 | if (IS_ERR(handle)) { |
1347 | ret = PTR_ERR(handle); | |
063c4561 MF |
1348 | mlog_errno(ret); |
1349 | goto out; | |
1350 | } | |
1351 | ||
1352 | /* | |
1353 | * We want to get the byte offset of the end of the 1st cluster. | |
1354 | */ | |
1355 | tmpend = (u64)osb->s_clustersize + (start & ~(osb->s_clustersize - 1)); | |
1356 | if (tmpend > end) | |
1357 | tmpend = end; | |
1358 | ||
1359 | mlog(0, "1st range: start: %llu, tmpend: %llu\n", | |
1360 | (unsigned long long)start, (unsigned long long)tmpend); | |
1361 | ||
1362 | ret = ocfs2_zero_range_for_truncate(inode, handle, start, tmpend); | |
1363 | if (ret) | |
1364 | mlog_errno(ret); | |
1365 | ||
1366 | if (tmpend < end) { | |
1367 | /* | |
1368 | * This may make start and end equal, but the zeroing | |
1369 | * code will skip any work in that case so there's no | |
1370 | * need to catch it up here. | |
1371 | */ | |
1372 | start = end & ~(osb->s_clustersize - 1); | |
1373 | ||
1374 | mlog(0, "2nd range: start: %llu, end: %llu\n", | |
1375 | (unsigned long long)start, (unsigned long long)end); | |
1376 | ||
1377 | ret = ocfs2_zero_range_for_truncate(inode, handle, start, end); | |
1378 | if (ret) | |
1379 | mlog_errno(ret); | |
1380 | } | |
1381 | ||
1382 | ocfs2_commit_trans(osb, handle); | |
1383 | out: | |
1384 | return ret; | |
1385 | } | |
1386 | ||
1387 | static int ocfs2_remove_inode_range(struct inode *inode, | |
1388 | struct buffer_head *di_bh, u64 byte_start, | |
1389 | u64 byte_len) | |
1390 | { | |
1391 | int ret = 0; | |
1392 | u32 trunc_start, trunc_len, cpos, phys_cpos, alloc_size; | |
1393 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
1394 | struct ocfs2_cached_dealloc_ctxt dealloc; | |
b1967d0e | 1395 | struct address_space *mapping = inode->i_mapping; |
fecc0112 | 1396 | struct ocfs2_extent_tree et; |
063c4561 | 1397 | |
fecc0112 | 1398 | ocfs2_init_dinode_extent_tree(&et, inode, di_bh); |
063c4561 MF |
1399 | ocfs2_init_dealloc_ctxt(&dealloc); |
1400 | ||
1401 | if (byte_len == 0) | |
1402 | return 0; | |
1403 | ||
1afc32b9 MF |
1404 | if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) { |
1405 | ret = ocfs2_truncate_inline(inode, di_bh, byte_start, | |
b1967d0e MF |
1406 | byte_start + byte_len, 0); |
1407 | if (ret) { | |
1afc32b9 | 1408 | mlog_errno(ret); |
b1967d0e MF |
1409 | goto out; |
1410 | } | |
1411 | /* | |
1412 | * There's no need to get fancy with the page cache | |
1413 | * truncate of an inline-data inode. We're talking | |
1414 | * about less than a page here, which will be cached | |
1415 | * in the dinode buffer anyway. | |
1416 | */ | |
1417 | unmap_mapping_range(mapping, 0, 0, 0); | |
1418 | truncate_inode_pages(mapping, 0); | |
1419 | goto out; | |
1afc32b9 MF |
1420 | } |
1421 | ||
063c4561 MF |
1422 | trunc_start = ocfs2_clusters_for_bytes(osb->sb, byte_start); |
1423 | trunc_len = (byte_start + byte_len) >> osb->s_clustersize_bits; | |
1424 | if (trunc_len >= trunc_start) | |
1425 | trunc_len -= trunc_start; | |
1426 | else | |
1427 | trunc_len = 0; | |
1428 | ||
1429 | mlog(0, "Inode: %llu, start: %llu, len: %llu, cstart: %u, clen: %u\n", | |
1430 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
1431 | (unsigned long long)byte_start, | |
1432 | (unsigned long long)byte_len, trunc_start, trunc_len); | |
1433 | ||
1434 | ret = ocfs2_zero_partial_clusters(inode, byte_start, byte_len); | |
1435 | if (ret) { | |
1436 | mlog_errno(ret); | |
1437 | goto out; | |
1438 | } | |
1439 | ||
1440 | cpos = trunc_start; | |
1441 | while (trunc_len) { | |
1442 | ret = ocfs2_get_clusters(inode, cpos, &phys_cpos, | |
1443 | &alloc_size, NULL); | |
1444 | if (ret) { | |
1445 | mlog_errno(ret); | |
1446 | goto out; | |
1447 | } | |
1448 | ||
1449 | if (alloc_size > trunc_len) | |
1450 | alloc_size = trunc_len; | |
1451 | ||
1452 | /* Only do work for non-holes */ | |
1453 | if (phys_cpos != 0) { | |
fecc0112 MF |
1454 | ret = ocfs2_remove_btree_range(inode, &et, cpos, |
1455 | phys_cpos, alloc_size, | |
1456 | &dealloc); | |
063c4561 MF |
1457 | if (ret) { |
1458 | mlog_errno(ret); | |
1459 | goto out; | |
1460 | } | |
1461 | } | |
1462 | ||
1463 | cpos += alloc_size; | |
1464 | trunc_len -= alloc_size; | |
1465 | } | |
1466 | ||
1467 | ocfs2_truncate_cluster_pages(inode, byte_start, byte_len); | |
1468 | ||
1469 | out: | |
1470 | ocfs2_schedule_truncate_log_flush(osb, 1); | |
1471 | ocfs2_run_deallocs(osb, &dealloc); | |
1472 | ||
1473 | return ret; | |
1474 | } | |
1475 | ||
b2580103 MF |
1476 | /* |
1477 | * Parts of this function taken from xfs_change_file_space() | |
1478 | */ | |
385820a3 MF |
1479 | static int __ocfs2_change_file_space(struct file *file, struct inode *inode, |
1480 | loff_t f_pos, unsigned int cmd, | |
1481 | struct ocfs2_space_resv *sr, | |
1482 | int change_size) | |
b2580103 MF |
1483 | { |
1484 | int ret; | |
1485 | s64 llen; | |
385820a3 | 1486 | loff_t size; |
b2580103 MF |
1487 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
1488 | struct buffer_head *di_bh = NULL; | |
1489 | handle_t *handle; | |
a00cce35 | 1490 | unsigned long long max_off = inode->i_sb->s_maxbytes; |
b2580103 | 1491 | |
b2580103 MF |
1492 | if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb)) |
1493 | return -EROFS; | |
1494 | ||
1495 | mutex_lock(&inode->i_mutex); | |
1496 | ||
1497 | /* | |
1498 | * This prevents concurrent writes on other nodes | |
1499 | */ | |
1500 | ret = ocfs2_rw_lock(inode, 1); | |
1501 | if (ret) { | |
1502 | mlog_errno(ret); | |
1503 | goto out; | |
1504 | } | |
1505 | ||
e63aecb6 | 1506 | ret = ocfs2_inode_lock(inode, &di_bh, 1); |
b2580103 MF |
1507 | if (ret) { |
1508 | mlog_errno(ret); | |
1509 | goto out_rw_unlock; | |
1510 | } | |
1511 | ||
1512 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) { | |
1513 | ret = -EPERM; | |
e63aecb6 | 1514 | goto out_inode_unlock; |
b2580103 MF |
1515 | } |
1516 | ||
1517 | switch (sr->l_whence) { | |
1518 | case 0: /*SEEK_SET*/ | |
1519 | break; | |
1520 | case 1: /*SEEK_CUR*/ | |
385820a3 | 1521 | sr->l_start += f_pos; |
b2580103 MF |
1522 | break; |
1523 | case 2: /*SEEK_END*/ | |
1524 | sr->l_start += i_size_read(inode); | |
1525 | break; | |
1526 | default: | |
1527 | ret = -EINVAL; | |
e63aecb6 | 1528 | goto out_inode_unlock; |
b2580103 MF |
1529 | } |
1530 | sr->l_whence = 0; | |
1531 | ||
1532 | llen = sr->l_len > 0 ? sr->l_len - 1 : sr->l_len; | |
1533 | ||
1534 | if (sr->l_start < 0 | |
1535 | || sr->l_start > max_off | |
1536 | || (sr->l_start + llen) < 0 | |
1537 | || (sr->l_start + llen) > max_off) { | |
1538 | ret = -EINVAL; | |
e63aecb6 | 1539 | goto out_inode_unlock; |
b2580103 | 1540 | } |
385820a3 | 1541 | size = sr->l_start + sr->l_len; |
b2580103 MF |
1542 | |
1543 | if (cmd == OCFS2_IOC_RESVSP || cmd == OCFS2_IOC_RESVSP64) { | |
1544 | if (sr->l_len <= 0) { | |
1545 | ret = -EINVAL; | |
e63aecb6 | 1546 | goto out_inode_unlock; |
b2580103 MF |
1547 | } |
1548 | } | |
1549 | ||
385820a3 | 1550 | if (file && should_remove_suid(file->f_path.dentry)) { |
b2580103 MF |
1551 | ret = __ocfs2_write_remove_suid(inode, di_bh); |
1552 | if (ret) { | |
1553 | mlog_errno(ret); | |
e63aecb6 | 1554 | goto out_inode_unlock; |
b2580103 MF |
1555 | } |
1556 | } | |
1557 | ||
1558 | down_write(&OCFS2_I(inode)->ip_alloc_sem); | |
1559 | switch (cmd) { | |
1560 | case OCFS2_IOC_RESVSP: | |
1561 | case OCFS2_IOC_RESVSP64: | |
1562 | /* | |
1563 | * This takes unsigned offsets, but the signed ones we | |
1564 | * pass have been checked against overflow above. | |
1565 | */ | |
1566 | ret = ocfs2_allocate_unwritten_extents(inode, sr->l_start, | |
1567 | sr->l_len); | |
1568 | break; | |
1569 | case OCFS2_IOC_UNRESVSP: | |
1570 | case OCFS2_IOC_UNRESVSP64: | |
1571 | ret = ocfs2_remove_inode_range(inode, di_bh, sr->l_start, | |
1572 | sr->l_len); | |
1573 | break; | |
1574 | default: | |
1575 | ret = -EINVAL; | |
1576 | } | |
1577 | up_write(&OCFS2_I(inode)->ip_alloc_sem); | |
1578 | if (ret) { | |
1579 | mlog_errno(ret); | |
e63aecb6 | 1580 | goto out_inode_unlock; |
b2580103 MF |
1581 | } |
1582 | ||
1583 | /* | |
1584 | * We update c/mtime for these changes | |
1585 | */ | |
1586 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); | |
1587 | if (IS_ERR(handle)) { | |
1588 | ret = PTR_ERR(handle); | |
1589 | mlog_errno(ret); | |
e63aecb6 | 1590 | goto out_inode_unlock; |
b2580103 MF |
1591 | } |
1592 | ||
385820a3 MF |
1593 | if (change_size && i_size_read(inode) < size) |
1594 | i_size_write(inode, size); | |
1595 | ||
b2580103 MF |
1596 | inode->i_ctime = inode->i_mtime = CURRENT_TIME; |
1597 | ret = ocfs2_mark_inode_dirty(handle, inode, di_bh); | |
1598 | if (ret < 0) | |
1599 | mlog_errno(ret); | |
1600 | ||
1601 | ocfs2_commit_trans(osb, handle); | |
1602 | ||
e63aecb6 | 1603 | out_inode_unlock: |
b2580103 | 1604 | brelse(di_bh); |
e63aecb6 | 1605 | ocfs2_inode_unlock(inode, 1); |
b2580103 MF |
1606 | out_rw_unlock: |
1607 | ocfs2_rw_unlock(inode, 1); | |
1608 | ||
b2580103 | 1609 | out: |
c259ae52 | 1610 | mutex_unlock(&inode->i_mutex); |
b2580103 MF |
1611 | return ret; |
1612 | } | |
1613 | ||
385820a3 MF |
1614 | int ocfs2_change_file_space(struct file *file, unsigned int cmd, |
1615 | struct ocfs2_space_resv *sr) | |
1616 | { | |
1617 | struct inode *inode = file->f_path.dentry->d_inode; | |
c19a28e1 | 1618 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
385820a3 MF |
1619 | |
1620 | if ((cmd == OCFS2_IOC_RESVSP || cmd == OCFS2_IOC_RESVSP64) && | |
1621 | !ocfs2_writes_unwritten_extents(osb)) | |
1622 | return -ENOTTY; | |
1623 | else if ((cmd == OCFS2_IOC_UNRESVSP || cmd == OCFS2_IOC_UNRESVSP64) && | |
1624 | !ocfs2_sparse_alloc(osb)) | |
1625 | return -ENOTTY; | |
1626 | ||
1627 | if (!S_ISREG(inode->i_mode)) | |
1628 | return -EINVAL; | |
1629 | ||
1630 | if (!(file->f_mode & FMODE_WRITE)) | |
1631 | return -EBADF; | |
1632 | ||
1633 | return __ocfs2_change_file_space(file, inode, file->f_pos, cmd, sr, 0); | |
1634 | } | |
1635 | ||
1636 | static long ocfs2_fallocate(struct inode *inode, int mode, loff_t offset, | |
1637 | loff_t len) | |
1638 | { | |
1639 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
1640 | struct ocfs2_space_resv sr; | |
1641 | int change_size = 1; | |
1642 | ||
1643 | if (!ocfs2_writes_unwritten_extents(osb)) | |
1644 | return -EOPNOTSUPP; | |
1645 | ||
1646 | if (S_ISDIR(inode->i_mode)) | |
1647 | return -ENODEV; | |
1648 | ||
1649 | if (mode & FALLOC_FL_KEEP_SIZE) | |
1650 | change_size = 0; | |
1651 | ||
1652 | sr.l_whence = 0; | |
1653 | sr.l_start = (s64)offset; | |
1654 | sr.l_len = (s64)len; | |
1655 | ||
1656 | return __ocfs2_change_file_space(NULL, inode, offset, | |
1657 | OCFS2_IOC_RESVSP64, &sr, change_size); | |
1658 | } | |
1659 | ||
8659ac25 TY |
1660 | static int ocfs2_prepare_inode_for_write(struct dentry *dentry, |
1661 | loff_t *ppos, | |
1662 | size_t count, | |
9517bac6 MF |
1663 | int appending, |
1664 | int *direct_io) | |
ccd979bd | 1665 | { |
65ed39d6 | 1666 | int ret = 0, meta_level = 0; |
8659ac25 | 1667 | struct inode *inode = dentry->d_inode; |
65ed39d6 | 1668 | loff_t saved_pos, end; |
ccd979bd | 1669 | |
ccd979bd | 1670 | /* |
65ed39d6 MF |
1671 | * We start with a read level meta lock and only jump to an ex |
1672 | * if we need to make modifications here. | |
ccd979bd | 1673 | */ |
ccd979bd | 1674 | for(;;) { |
e63aecb6 | 1675 | ret = ocfs2_inode_lock(inode, NULL, meta_level); |
ccd979bd MF |
1676 | if (ret < 0) { |
1677 | meta_level = -1; | |
1678 | mlog_errno(ret); | |
1679 | goto out; | |
1680 | } | |
1681 | ||
1682 | /* Clear suid / sgid if necessary. We do this here | |
1683 | * instead of later in the write path because | |
1684 | * remove_suid() calls ->setattr without any hint that | |
1685 | * we may have already done our cluster locking. Since | |
1686 | * ocfs2_setattr() *must* take cluster locks to | |
1687 | * proceeed, this will lead us to recursively lock the | |
1688 | * inode. There's also the dinode i_size state which | |
1689 | * can be lost via setattr during extending writes (we | |
1690 | * set inode->i_size at the end of a write. */ | |
8659ac25 | 1691 | if (should_remove_suid(dentry)) { |
ccd979bd | 1692 | if (meta_level == 0) { |
e63aecb6 | 1693 | ocfs2_inode_unlock(inode, meta_level); |
ccd979bd MF |
1694 | meta_level = 1; |
1695 | continue; | |
1696 | } | |
1697 | ||
1698 | ret = ocfs2_write_remove_suid(inode); | |
1699 | if (ret < 0) { | |
1700 | mlog_errno(ret); | |
8659ac25 | 1701 | goto out_unlock; |
ccd979bd MF |
1702 | } |
1703 | } | |
1704 | ||
1705 | /* work on a copy of ppos until we're sure that we won't have | |
1706 | * to recalculate it due to relocking. */ | |
8659ac25 | 1707 | if (appending) { |
ccd979bd MF |
1708 | saved_pos = i_size_read(inode); |
1709 | mlog(0, "O_APPEND: inode->i_size=%llu\n", saved_pos); | |
1710 | } else { | |
8659ac25 | 1711 | saved_pos = *ppos; |
ccd979bd | 1712 | } |
3a0782d0 | 1713 | |
65ed39d6 | 1714 | end = saved_pos + count; |
9517bac6 | 1715 | |
65ed39d6 MF |
1716 | /* |
1717 | * Skip the O_DIRECT checks if we don't need | |
1718 | * them. | |
1719 | */ | |
1720 | if (!direct_io || !(*direct_io)) | |
9517bac6 | 1721 | break; |
9517bac6 | 1722 | |
1afc32b9 MF |
1723 | /* |
1724 | * There's no sane way to do direct writes to an inode | |
1725 | * with inline data. | |
1726 | */ | |
1727 | if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) { | |
1728 | *direct_io = 0; | |
1729 | break; | |
1730 | } | |
1731 | ||
3a0782d0 | 1732 | /* |
65ed39d6 MF |
1733 | * Allowing concurrent direct writes means |
1734 | * i_size changes wouldn't be synchronized, so | |
1735 | * one node could wind up truncating another | |
1736 | * nodes writes. | |
3a0782d0 | 1737 | */ |
65ed39d6 MF |
1738 | if (end > i_size_read(inode)) { |
1739 | *direct_io = 0; | |
ccd979bd | 1740 | break; |
ccd979bd MF |
1741 | } |
1742 | ||
65ed39d6 MF |
1743 | /* |
1744 | * We don't fill holes during direct io, so | |
1745 | * check for them here. If any are found, the | |
1746 | * caller will have to retake some cluster | |
1747 | * locks and initiate the io as buffered. | |
1748 | */ | |
1749 | ret = ocfs2_check_range_for_holes(inode, saved_pos, count); | |
1750 | if (ret == 1) { | |
1751 | *direct_io = 0; | |
1752 | ret = 0; | |
1753 | } else if (ret < 0) | |
1754 | mlog_errno(ret); | |
ccd979bd MF |
1755 | break; |
1756 | } | |
1757 | ||
8659ac25 TY |
1758 | if (appending) |
1759 | *ppos = saved_pos; | |
1760 | ||
1761 | out_unlock: | |
e63aecb6 | 1762 | ocfs2_inode_unlock(inode, meta_level); |
8659ac25 TY |
1763 | |
1764 | out: | |
1765 | return ret; | |
1766 | } | |
1767 | ||
1768 | static ssize_t ocfs2_file_aio_write(struct kiocb *iocb, | |
1769 | const struct iovec *iov, | |
1770 | unsigned long nr_segs, | |
1771 | loff_t pos) | |
1772 | { | |
9517bac6 | 1773 | int ret, direct_io, appending, rw_level, have_alloc_sem = 0; |
b6af1bcd | 1774 | int can_do_direct; |
9517bac6 MF |
1775 | ssize_t written = 0; |
1776 | size_t ocount; /* original count */ | |
1777 | size_t count; /* after file limit checks */ | |
9ea2d32f MF |
1778 | loff_t old_size, *ppos = &iocb->ki_pos; |
1779 | u32 old_clusters; | |
9517bac6 MF |
1780 | struct file *file = iocb->ki_filp; |
1781 | struct inode *inode = file->f_path.dentry->d_inode; | |
9ea2d32f | 1782 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
9517bac6 MF |
1783 | |
1784 | mlog_entry("(0x%p, %u, '%.*s')\n", file, | |
8659ac25 | 1785 | (unsigned int)nr_segs, |
9517bac6 MF |
1786 | file->f_path.dentry->d_name.len, |
1787 | file->f_path.dentry->d_name.name); | |
8659ac25 | 1788 | |
8659ac25 TY |
1789 | if (iocb->ki_left == 0) |
1790 | return 0; | |
1791 | ||
9517bac6 MF |
1792 | vfs_check_frozen(inode->i_sb, SB_FREEZE_WRITE); |
1793 | ||
1794 | appending = file->f_flags & O_APPEND ? 1 : 0; | |
1795 | direct_io = file->f_flags & O_DIRECT ? 1 : 0; | |
1796 | ||
8659ac25 | 1797 | mutex_lock(&inode->i_mutex); |
9517bac6 MF |
1798 | |
1799 | relock: | |
8659ac25 | 1800 | /* to match setattr's i_mutex -> i_alloc_sem -> rw_lock ordering */ |
9517bac6 | 1801 | if (direct_io) { |
8659ac25 | 1802 | down_read(&inode->i_alloc_sem); |
9517bac6 | 1803 | have_alloc_sem = 1; |
8659ac25 TY |
1804 | } |
1805 | ||
1806 | /* concurrent O_DIRECT writes are allowed */ | |
9517bac6 | 1807 | rw_level = !direct_io; |
8659ac25 TY |
1808 | ret = ocfs2_rw_lock(inode, rw_level); |
1809 | if (ret < 0) { | |
8659ac25 | 1810 | mlog_errno(ret); |
9517bac6 | 1811 | goto out_sems; |
8659ac25 TY |
1812 | } |
1813 | ||
9517bac6 MF |
1814 | can_do_direct = direct_io; |
1815 | ret = ocfs2_prepare_inode_for_write(file->f_path.dentry, ppos, | |
1816 | iocb->ki_left, appending, | |
1817 | &can_do_direct); | |
8659ac25 TY |
1818 | if (ret < 0) { |
1819 | mlog_errno(ret); | |
1820 | goto out; | |
1821 | } | |
ccd979bd | 1822 | |
9517bac6 MF |
1823 | /* |
1824 | * We can't complete the direct I/O as requested, fall back to | |
1825 | * buffered I/O. | |
1826 | */ | |
1827 | if (direct_io && !can_do_direct) { | |
1828 | ocfs2_rw_unlock(inode, rw_level); | |
1829 | up_read(&inode->i_alloc_sem); | |
1830 | ||
1831 | have_alloc_sem = 0; | |
1832 | rw_level = -1; | |
1833 | ||
1834 | direct_io = 0; | |
9517bac6 MF |
1835 | goto relock; |
1836 | } | |
1837 | ||
9ea2d32f MF |
1838 | /* |
1839 | * To later detect whether a journal commit for sync writes is | |
1840 | * necessary, we sample i_size, and cluster count here. | |
1841 | */ | |
1842 | old_size = i_size_read(inode); | |
1843 | old_clusters = OCFS2_I(inode)->ip_clusters; | |
1844 | ||
ccd979bd | 1845 | /* communicate with ocfs2_dio_end_io */ |
7cdfc3a1 | 1846 | ocfs2_iocb_set_rw_locked(iocb, rw_level); |
ccd979bd | 1847 | |
9517bac6 | 1848 | if (direct_io) { |
b6af1bcd NP |
1849 | ret = generic_segment_checks(iov, &nr_segs, &ocount, |
1850 | VERIFY_READ); | |
1851 | if (ret) | |
1852 | goto out_dio; | |
1853 | ||
cefcb800 | 1854 | count = ocount; |
b6af1bcd NP |
1855 | ret = generic_write_checks(file, ppos, &count, |
1856 | S_ISBLK(inode->i_mode)); | |
1857 | if (ret) | |
1858 | goto out_dio; | |
1859 | ||
9517bac6 MF |
1860 | written = generic_file_direct_write(iocb, iov, &nr_segs, *ppos, |
1861 | ppos, count, ocount); | |
1862 | if (written < 0) { | |
c4354001 DM |
1863 | /* |
1864 | * direct write may have instantiated a few | |
1865 | * blocks outside i_size. Trim these off again. | |
1866 | * Don't need i_size_read because we hold i_mutex. | |
1867 | */ | |
1868 | if (*ppos + count > inode->i_size) | |
1869 | vmtruncate(inode, inode->i_size); | |
9517bac6 MF |
1870 | ret = written; |
1871 | goto out_dio; | |
1872 | } | |
1873 | } else { | |
b6af1bcd NP |
1874 | written = generic_file_aio_write_nolock(iocb, iov, nr_segs, |
1875 | *ppos); | |
9517bac6 | 1876 | } |
ccd979bd | 1877 | |
9517bac6 | 1878 | out_dio: |
ccd979bd | 1879 | /* buffered aio wouldn't have proper lock coverage today */ |
9517bac6 | 1880 | BUG_ON(ret == -EIOCBQUEUED && !(file->f_flags & O_DIRECT)); |
ccd979bd | 1881 | |
9ea2d32f MF |
1882 | if ((file->f_flags & O_SYNC && !direct_io) || IS_SYNC(inode)) { |
1883 | /* | |
1884 | * The generic write paths have handled getting data | |
1885 | * to disk, but since we don't make use of the dirty | |
1886 | * inode list, a manual journal commit is necessary | |
1887 | * here. | |
1888 | */ | |
1889 | if (old_size != i_size_read(inode) || | |
1890 | old_clusters != OCFS2_I(inode)->ip_clusters) { | |
2b4e30fb | 1891 | ret = jbd2_journal_force_commit(osb->journal->j_journal); |
9ea2d32f MF |
1892 | if (ret < 0) |
1893 | written = ret; | |
1894 | } | |
1895 | } | |
1896 | ||
ccd979bd MF |
1897 | /* |
1898 | * deep in g_f_a_w_n()->ocfs2_direct_IO we pass in a ocfs2_dio_end_io | |
1899 | * function pointer which is called when o_direct io completes so that | |
1900 | * it can unlock our rw lock. (it's the clustered equivalent of | |
1901 | * i_alloc_sem; protects truncate from racing with pending ios). | |
1902 | * Unfortunately there are error cases which call end_io and others | |
1903 | * that don't. so we don't have to unlock the rw_lock if either an | |
1904 | * async dio is going to do it in the future or an end_io after an | |
1905 | * error has already done it. | |
1906 | */ | |
1907 | if (ret == -EIOCBQUEUED || !ocfs2_iocb_is_rw_locked(iocb)) { | |
1908 | rw_level = -1; | |
1909 | have_alloc_sem = 0; | |
1910 | } | |
1911 | ||
1912 | out: | |
9517bac6 MF |
1913 | if (rw_level != -1) |
1914 | ocfs2_rw_unlock(inode, rw_level); | |
1915 | ||
1916 | out_sems: | |
ccd979bd MF |
1917 | if (have_alloc_sem) |
1918 | up_read(&inode->i_alloc_sem); | |
9517bac6 | 1919 | |
1b1dcc1b | 1920 | mutex_unlock(&inode->i_mutex); |
ccd979bd | 1921 | |
812e7a6a WW |
1922 | if (written) |
1923 | ret = written; | |
ccd979bd | 1924 | mlog_exit(ret); |
812e7a6a | 1925 | return ret; |
ccd979bd MF |
1926 | } |
1927 | ||
328eaaba MS |
1928 | static int ocfs2_splice_to_file(struct pipe_inode_info *pipe, |
1929 | struct file *out, | |
1930 | struct splice_desc *sd) | |
1931 | { | |
1932 | int ret; | |
1933 | ||
1934 | ret = ocfs2_prepare_inode_for_write(out->f_path.dentry, &sd->pos, | |
1935 | sd->total_len, 0, NULL); | |
1936 | if (ret < 0) { | |
1937 | mlog_errno(ret); | |
1938 | return ret; | |
1939 | } | |
1940 | ||
1941 | return splice_from_pipe_feed(pipe, sd, pipe_to_file); | |
1942 | } | |
1943 | ||
8659ac25 TY |
1944 | static ssize_t ocfs2_file_splice_write(struct pipe_inode_info *pipe, |
1945 | struct file *out, | |
1946 | loff_t *ppos, | |
1947 | size_t len, | |
1948 | unsigned int flags) | |
1949 | { | |
1950 | int ret; | |
328eaaba MS |
1951 | struct address_space *mapping = out->f_mapping; |
1952 | struct inode *inode = mapping->host; | |
1953 | struct splice_desc sd = { | |
1954 | .total_len = len, | |
1955 | .flags = flags, | |
1956 | .pos = *ppos, | |
1957 | .u.file = out, | |
1958 | }; | |
8659ac25 TY |
1959 | |
1960 | mlog_entry("(0x%p, 0x%p, %u, '%.*s')\n", out, pipe, | |
1961 | (unsigned int)len, | |
d28c9174 JS |
1962 | out->f_path.dentry->d_name.len, |
1963 | out->f_path.dentry->d_name.name); | |
8659ac25 | 1964 | |
328eaaba MS |
1965 | if (pipe->inode) |
1966 | mutex_lock_nested(&pipe->inode->i_mutex, I_MUTEX_PARENT); | |
8659ac25 | 1967 | |
328eaaba MS |
1968 | splice_from_pipe_begin(&sd); |
1969 | do { | |
1970 | ret = splice_from_pipe_next(pipe, &sd); | |
1971 | if (ret <= 0) | |
1972 | break; | |
8659ac25 | 1973 | |
328eaaba MS |
1974 | mutex_lock_nested(&inode->i_mutex, I_MUTEX_CHILD); |
1975 | ret = ocfs2_rw_lock(inode, 1); | |
1976 | if (ret < 0) | |
1977 | mlog_errno(ret); | |
1978 | else { | |
1979 | ret = ocfs2_splice_to_file(pipe, out, &sd); | |
1980 | ocfs2_rw_unlock(inode, 1); | |
1981 | } | |
1982 | mutex_unlock(&inode->i_mutex); | |
1983 | } while (ret > 0); | |
1984 | splice_from_pipe_end(pipe, &sd); | |
8659ac25 | 1985 | |
7bfac9ec MS |
1986 | if (pipe->inode) |
1987 | mutex_unlock(&pipe->inode->i_mutex); | |
8659ac25 | 1988 | |
328eaaba MS |
1989 | if (sd.num_spliced) |
1990 | ret = sd.num_spliced; | |
1991 | ||
1992 | if (ret > 0) { | |
1993 | unsigned long nr_pages; | |
1994 | ||
1995 | *ppos += ret; | |
1996 | nr_pages = (ret + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT; | |
1997 | ||
1998 | /* | |
1999 | * If file or inode is SYNC and we actually wrote some data, | |
2000 | * sync it. | |
2001 | */ | |
2002 | if (unlikely((out->f_flags & O_SYNC) || IS_SYNC(inode))) { | |
2003 | int err; | |
2004 | ||
2005 | mutex_lock(&inode->i_mutex); | |
2006 | err = ocfs2_rw_lock(inode, 1); | |
2007 | if (err < 0) { | |
2008 | mlog_errno(err); | |
2009 | } else { | |
2010 | err = generic_osync_inode(inode, mapping, | |
2011 | OSYNC_METADATA|OSYNC_DATA); | |
2012 | ocfs2_rw_unlock(inode, 1); | |
2013 | } | |
2014 | mutex_unlock(&inode->i_mutex); | |
2015 | ||
2016 | if (err) | |
2017 | ret = err; | |
2018 | } | |
2019 | balance_dirty_pages_ratelimited_nr(mapping, nr_pages); | |
2020 | } | |
8659ac25 TY |
2021 | |
2022 | mlog_exit(ret); | |
2023 | return ret; | |
2024 | } | |
2025 | ||
2026 | static ssize_t ocfs2_file_splice_read(struct file *in, | |
2027 | loff_t *ppos, | |
2028 | struct pipe_inode_info *pipe, | |
2029 | size_t len, | |
2030 | unsigned int flags) | |
2031 | { | |
1962f39a | 2032 | int ret = 0, lock_level = 0; |
d28c9174 | 2033 | struct inode *inode = in->f_path.dentry->d_inode; |
8659ac25 TY |
2034 | |
2035 | mlog_entry("(0x%p, 0x%p, %u, '%.*s')\n", in, pipe, | |
2036 | (unsigned int)len, | |
d28c9174 JS |
2037 | in->f_path.dentry->d_name.len, |
2038 | in->f_path.dentry->d_name.name); | |
8659ac25 TY |
2039 | |
2040 | /* | |
2041 | * See the comment in ocfs2_file_aio_read() | |
2042 | */ | |
1962f39a | 2043 | ret = ocfs2_inode_lock_atime(inode, in->f_vfsmnt, &lock_level); |
8659ac25 TY |
2044 | if (ret < 0) { |
2045 | mlog_errno(ret); | |
2046 | goto bail; | |
2047 | } | |
1962f39a | 2048 | ocfs2_inode_unlock(inode, lock_level); |
8659ac25 TY |
2049 | |
2050 | ret = generic_file_splice_read(in, ppos, pipe, len, flags); | |
2051 | ||
2052 | bail: | |
2053 | mlog_exit(ret); | |
2054 | return ret; | |
2055 | } | |
2056 | ||
ccd979bd | 2057 | static ssize_t ocfs2_file_aio_read(struct kiocb *iocb, |
027445c3 BP |
2058 | const struct iovec *iov, |
2059 | unsigned long nr_segs, | |
ccd979bd MF |
2060 | loff_t pos) |
2061 | { | |
25899dee | 2062 | int ret = 0, rw_level = -1, have_alloc_sem = 0, lock_level = 0; |
ccd979bd | 2063 | struct file *filp = iocb->ki_filp; |
d28c9174 | 2064 | struct inode *inode = filp->f_path.dentry->d_inode; |
ccd979bd | 2065 | |
027445c3 BP |
2066 | mlog_entry("(0x%p, %u, '%.*s')\n", filp, |
2067 | (unsigned int)nr_segs, | |
d28c9174 JS |
2068 | filp->f_path.dentry->d_name.len, |
2069 | filp->f_path.dentry->d_name.name); | |
ccd979bd MF |
2070 | |
2071 | if (!inode) { | |
2072 | ret = -EINVAL; | |
2073 | mlog_errno(ret); | |
2074 | goto bail; | |
2075 | } | |
2076 | ||
ccd979bd MF |
2077 | /* |
2078 | * buffered reads protect themselves in ->readpage(). O_DIRECT reads | |
2079 | * need locks to protect pending reads from racing with truncate. | |
2080 | */ | |
2081 | if (filp->f_flags & O_DIRECT) { | |
2082 | down_read(&inode->i_alloc_sem); | |
2083 | have_alloc_sem = 1; | |
2084 | ||
2085 | ret = ocfs2_rw_lock(inode, 0); | |
2086 | if (ret < 0) { | |
2087 | mlog_errno(ret); | |
2088 | goto bail; | |
2089 | } | |
2090 | rw_level = 0; | |
2091 | /* communicate with ocfs2_dio_end_io */ | |
7cdfc3a1 | 2092 | ocfs2_iocb_set_rw_locked(iocb, rw_level); |
ccd979bd MF |
2093 | } |
2094 | ||
c4374f8a MF |
2095 | /* |
2096 | * We're fine letting folks race truncates and extending | |
2097 | * writes with read across the cluster, just like they can | |
2098 | * locally. Hence no rw_lock during read. | |
2099 | * | |
2100 | * Take and drop the meta data lock to update inode fields | |
2101 | * like i_size. This allows the checks down below | |
2102 | * generic_file_aio_read() a chance of actually working. | |
2103 | */ | |
e63aecb6 | 2104 | ret = ocfs2_inode_lock_atime(inode, filp->f_vfsmnt, &lock_level); |
c4374f8a MF |
2105 | if (ret < 0) { |
2106 | mlog_errno(ret); | |
2107 | goto bail; | |
2108 | } | |
e63aecb6 | 2109 | ocfs2_inode_unlock(inode, lock_level); |
c4374f8a | 2110 | |
027445c3 | 2111 | ret = generic_file_aio_read(iocb, iov, nr_segs, iocb->ki_pos); |
ccd979bd | 2112 | if (ret == -EINVAL) |
56753bd3 | 2113 | mlog(0, "generic_file_aio_read returned -EINVAL\n"); |
ccd979bd MF |
2114 | |
2115 | /* buffered aio wouldn't have proper lock coverage today */ | |
2116 | BUG_ON(ret == -EIOCBQUEUED && !(filp->f_flags & O_DIRECT)); | |
2117 | ||
2118 | /* see ocfs2_file_aio_write */ | |
2119 | if (ret == -EIOCBQUEUED || !ocfs2_iocb_is_rw_locked(iocb)) { | |
2120 | rw_level = -1; | |
2121 | have_alloc_sem = 0; | |
2122 | } | |
2123 | ||
2124 | bail: | |
2125 | if (have_alloc_sem) | |
2126 | up_read(&inode->i_alloc_sem); | |
2127 | if (rw_level != -1) | |
2128 | ocfs2_rw_unlock(inode, rw_level); | |
2129 | mlog_exit(ret); | |
2130 | ||
2131 | return ret; | |
2132 | } | |
2133 | ||
92e1d5be | 2134 | const struct inode_operations ocfs2_file_iops = { |
ccd979bd MF |
2135 | .setattr = ocfs2_setattr, |
2136 | .getattr = ocfs2_getattr, | |
d38eb8db | 2137 | .permission = ocfs2_permission, |
cf1d6c76 TY |
2138 | .setxattr = generic_setxattr, |
2139 | .getxattr = generic_getxattr, | |
2140 | .listxattr = ocfs2_listxattr, | |
2141 | .removexattr = generic_removexattr, | |
385820a3 | 2142 | .fallocate = ocfs2_fallocate, |
00dc417f | 2143 | .fiemap = ocfs2_fiemap, |
ccd979bd MF |
2144 | }; |
2145 | ||
92e1d5be | 2146 | const struct inode_operations ocfs2_special_file_iops = { |
ccd979bd MF |
2147 | .setattr = ocfs2_setattr, |
2148 | .getattr = ocfs2_getattr, | |
d38eb8db | 2149 | .permission = ocfs2_permission, |
ccd979bd MF |
2150 | }; |
2151 | ||
53da4939 MF |
2152 | /* |
2153 | * Other than ->lock, keep ocfs2_fops and ocfs2_dops in sync with | |
2154 | * ocfs2_fops_no_plocks and ocfs2_dops_no_plocks! | |
2155 | */ | |
4b6f5d20 | 2156 | const struct file_operations ocfs2_fops = { |
32c3c0e2 | 2157 | .llseek = generic_file_llseek, |
ccd979bd MF |
2158 | .read = do_sync_read, |
2159 | .write = do_sync_write, | |
ccd979bd MF |
2160 | .mmap = ocfs2_mmap, |
2161 | .fsync = ocfs2_sync_file, | |
2162 | .release = ocfs2_file_release, | |
2163 | .open = ocfs2_file_open, | |
2164 | .aio_read = ocfs2_file_aio_read, | |
2165 | .aio_write = ocfs2_file_aio_write, | |
c9ec1488 | 2166 | .unlocked_ioctl = ocfs2_ioctl, |
586d232b MF |
2167 | #ifdef CONFIG_COMPAT |
2168 | .compat_ioctl = ocfs2_compat_ioctl, | |
2169 | #endif | |
53da4939 | 2170 | .lock = ocfs2_lock, |
53fc622b | 2171 | .flock = ocfs2_flock, |
8659ac25 TY |
2172 | .splice_read = ocfs2_file_splice_read, |
2173 | .splice_write = ocfs2_file_splice_write, | |
ccd979bd MF |
2174 | }; |
2175 | ||
4b6f5d20 | 2176 | const struct file_operations ocfs2_dops = { |
32c3c0e2 | 2177 | .llseek = generic_file_llseek, |
ccd979bd MF |
2178 | .read = generic_read_dir, |
2179 | .readdir = ocfs2_readdir, | |
2180 | .fsync = ocfs2_sync_file, | |
53fc622b MF |
2181 | .release = ocfs2_dir_release, |
2182 | .open = ocfs2_dir_open, | |
c9ec1488 | 2183 | .unlocked_ioctl = ocfs2_ioctl, |
586d232b MF |
2184 | #ifdef CONFIG_COMPAT |
2185 | .compat_ioctl = ocfs2_compat_ioctl, | |
53da4939 MF |
2186 | #endif |
2187 | .lock = ocfs2_lock, | |
2188 | .flock = ocfs2_flock, | |
2189 | }; | |
2190 | ||
2191 | /* | |
2192 | * POSIX-lockless variants of our file_operations. | |
2193 | * | |
2194 | * These will be used if the underlying cluster stack does not support | |
2195 | * posix file locking, if the user passes the "localflocks" mount | |
2196 | * option, or if we have a local-only fs. | |
2197 | * | |
2198 | * ocfs2_flock is in here because all stacks handle UNIX file locks, | |
2199 | * so we still want it in the case of no stack support for | |
2200 | * plocks. Internally, it will do the right thing when asked to ignore | |
2201 | * the cluster. | |
2202 | */ | |
2203 | const struct file_operations ocfs2_fops_no_plocks = { | |
2204 | .llseek = generic_file_llseek, | |
2205 | .read = do_sync_read, | |
2206 | .write = do_sync_write, | |
2207 | .mmap = ocfs2_mmap, | |
2208 | .fsync = ocfs2_sync_file, | |
2209 | .release = ocfs2_file_release, | |
2210 | .open = ocfs2_file_open, | |
2211 | .aio_read = ocfs2_file_aio_read, | |
2212 | .aio_write = ocfs2_file_aio_write, | |
2213 | .unlocked_ioctl = ocfs2_ioctl, | |
2214 | #ifdef CONFIG_COMPAT | |
2215 | .compat_ioctl = ocfs2_compat_ioctl, | |
2216 | #endif | |
2217 | .flock = ocfs2_flock, | |
2218 | .splice_read = ocfs2_file_splice_read, | |
2219 | .splice_write = ocfs2_file_splice_write, | |
2220 | }; | |
2221 | ||
2222 | const struct file_operations ocfs2_dops_no_plocks = { | |
2223 | .llseek = generic_file_llseek, | |
2224 | .read = generic_read_dir, | |
2225 | .readdir = ocfs2_readdir, | |
2226 | .fsync = ocfs2_sync_file, | |
2227 | .release = ocfs2_dir_release, | |
2228 | .open = ocfs2_dir_open, | |
2229 | .unlocked_ioctl = ocfs2_ioctl, | |
2230 | #ifdef CONFIG_COMPAT | |
2231 | .compat_ioctl = ocfs2_compat_ioctl, | |
586d232b | 2232 | #endif |
53fc622b | 2233 | .flock = ocfs2_flock, |
ccd979bd | 2234 | }; |