1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * fs/f2fs/file.c
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
7 */
8 #include <linux/fs.h>
9 #include <linux/f2fs_fs.h>
10 #include <linux/stat.h>
11 #include <linux/buffer_head.h>
12 #include <linux/writeback.h>
13 #include <linux/blkdev.h>
14 #include <linux/falloc.h>
15 #include <linux/types.h>
16 #include <linux/compat.h>
17 #include <linux/uaccess.h>
18 #include <linux/mount.h>
19 #include <linux/pagevec.h>
20 #include <linux/uio.h>
21 #include <linux/uuid.h>
22 #include <linux/file.h>
23 #include <linux/nls.h>
24 #include <linux/sched/signal.h>
25 #include <linux/fileattr.h>
26 #include <linux/fadvise.h>
27 #include <linux/iomap.h>
28
29 #include "f2fs.h"
30 #include "node.h"
31 #include "segment.h"
32 #include "xattr.h"
33 #include "acl.h"
34 #include "gc.h"
35 #include "iostat.h"
36 #include <trace/events/f2fs.h>
37 #include <uapi/linux/f2fs.h>
38
f2fs_filemap_fault(struct vm_fault * vmf)39 static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf)
40 {
41 struct inode *inode = file_inode(vmf->vma->vm_file);
42 vm_fault_t ret;
43
44 ret = filemap_fault(vmf);
45 if (ret & VM_FAULT_LOCKED)
46 f2fs_update_iostat(F2FS_I_SB(inode), inode,
47 APP_MAPPED_READ_IO, F2FS_BLKSIZE);
48
49 trace_f2fs_filemap_fault(inode, vmf->pgoff, (unsigned long)ret);
50
51 return ret;
52 }
53
f2fs_vm_page_mkwrite(struct vm_fault * vmf)54 static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf)
55 {
56 struct page *page = vmf->page;
57 struct inode *inode = file_inode(vmf->vma->vm_file);
58 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
59 struct dnode_of_data dn;
60 bool need_alloc = true;
61 int err = 0;
62
63 if (unlikely(IS_IMMUTABLE(inode)))
64 return VM_FAULT_SIGBUS;
65
66 if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED))
67 return VM_FAULT_SIGBUS;
68
69 if (unlikely(f2fs_cp_error(sbi))) {
70 err = -EIO;
71 goto err;
72 }
73
74 if (!f2fs_is_checkpoint_ready(sbi)) {
75 err = -ENOSPC;
76 goto err;
77 }
78
79 err = f2fs_convert_inline_inode(inode);
80 if (err)
81 goto err;
82
83 #ifdef CONFIG_F2FS_FS_COMPRESSION
84 if (f2fs_compressed_file(inode)) {
85 int ret = f2fs_is_compressed_cluster(inode, page->index);
86
87 if (ret < 0) {
88 err = ret;
89 goto err;
90 } else if (ret) {
91 need_alloc = false;
92 }
93 }
94 #endif
95 /* should do out of any locked page */
96 if (need_alloc)
97 f2fs_balance_fs(sbi, true);
98
99 sb_start_pagefault(inode->i_sb);
100
101 f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
102
103 file_update_time(vmf->vma->vm_file);
104 filemap_invalidate_lock_shared(inode->i_mapping);
105 lock_page(page);
106 if (unlikely(page->mapping != inode->i_mapping ||
107 page_offset(page) > i_size_read(inode) ||
108 !PageUptodate(page))) {
109 unlock_page(page);
110 err = -EFAULT;
111 goto out_sem;
112 }
113
114 if (need_alloc) {
115 /* block allocation */
116 set_new_dnode(&dn, inode, NULL, NULL, 0);
117 err = f2fs_get_block_locked(&dn, page->index);
118 }
119
120 #ifdef CONFIG_F2FS_FS_COMPRESSION
121 if (!need_alloc) {
122 set_new_dnode(&dn, inode, NULL, NULL, 0);
123 err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE);
124 f2fs_put_dnode(&dn);
125 }
126 #endif
127 if (err) {
128 unlock_page(page);
129 goto out_sem;
130 }
131
132 f2fs_wait_on_page_writeback(page, DATA, false, true);
133
134 /* wait for GCed page writeback via META_MAPPING */
135 f2fs_wait_on_block_writeback(inode, dn.data_blkaddr);
136
137 /*
138 * check to see if the page is mapped already (no holes)
139 */
140 if (PageMappedToDisk(page))
141 goto out_sem;
142
143 /* page is wholly or partially inside EOF */
144 if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
145 i_size_read(inode)) {
146 loff_t offset;
147
148 offset = i_size_read(inode) & ~PAGE_MASK;
149 zero_user_segment(page, offset, PAGE_SIZE);
150 }
151 set_page_dirty(page);
152
153 f2fs_update_iostat(sbi, inode, APP_MAPPED_IO, F2FS_BLKSIZE);
154 f2fs_update_time(sbi, REQ_TIME);
155
156 trace_f2fs_vm_page_mkwrite(page, DATA);
157 out_sem:
158 filemap_invalidate_unlock_shared(inode->i_mapping);
159
160 sb_end_pagefault(inode->i_sb);
161 err:
162 return vmf_fs_error(err);
163 }
164
165 static const struct vm_operations_struct f2fs_file_vm_ops = {
166 .fault = f2fs_filemap_fault,
167 .map_pages = filemap_map_pages,
168 .page_mkwrite = f2fs_vm_page_mkwrite,
169 };
170
get_parent_ino(struct inode * inode,nid_t * pino)171 static int get_parent_ino(struct inode *inode, nid_t *pino)
172 {
173 struct dentry *dentry;
174
175 /*
176 * Make sure to get the non-deleted alias. The alias associated with
177 * the open file descriptor being fsync()'ed may be deleted already.
178 */
179 dentry = d_find_alias(inode);
180 if (!dentry)
181 return 0;
182
183 *pino = parent_ino(dentry);
184 dput(dentry);
185 return 1;
186 }
187
need_do_checkpoint(struct inode * inode)188 static inline enum cp_reason_type need_do_checkpoint(struct inode *inode)
189 {
190 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
191 enum cp_reason_type cp_reason = CP_NO_NEEDED;
192
193 if (!S_ISREG(inode->i_mode))
194 cp_reason = CP_NON_REGULAR;
195 else if (f2fs_compressed_file(inode))
196 cp_reason = CP_COMPRESSED;
197 else if (inode->i_nlink != 1)
198 cp_reason = CP_HARDLINK;
199 else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
200 cp_reason = CP_SB_NEED_CP;
201 else if (file_wrong_pino(inode))
202 cp_reason = CP_WRONG_PINO;
203 else if (!f2fs_space_for_roll_forward(sbi))
204 cp_reason = CP_NO_SPC_ROLL;
205 else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
206 cp_reason = CP_NODE_NEED_CP;
207 else if (test_opt(sbi, FASTBOOT))
208 cp_reason = CP_FASTBOOT_MODE;
209 else if (F2FS_OPTION(sbi).active_logs == 2)
210 cp_reason = CP_SPEC_LOG_NUM;
211 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT &&
212 f2fs_need_dentry_mark(sbi, inode->i_ino) &&
213 f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino,
214 TRANS_DIR_INO))
215 cp_reason = CP_RECOVER_DIR;
216
217 return cp_reason;
218 }
219
need_inode_page_update(struct f2fs_sb_info * sbi,nid_t ino)220 static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
221 {
222 struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
223 bool ret = false;
224 /* But we need to avoid that there are some inode updates */
225 if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino))
226 ret = true;
227 f2fs_put_page(i, 0);
228 return ret;
229 }
230
try_to_fix_pino(struct inode * inode)231 static void try_to_fix_pino(struct inode *inode)
232 {
233 struct f2fs_inode_info *fi = F2FS_I(inode);
234 nid_t pino;
235
236 f2fs_down_write(&fi->i_sem);
237 if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
238 get_parent_ino(inode, &pino)) {
239 f2fs_i_pino_write(inode, pino);
240 file_got_pino(inode);
241 }
242 f2fs_up_write(&fi->i_sem);
243 }
244
f2fs_do_sync_file(struct file * file,loff_t start,loff_t end,int datasync,bool atomic)245 static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
246 int datasync, bool atomic)
247 {
248 struct inode *inode = file->f_mapping->host;
249 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
250 nid_t ino = inode->i_ino;
251 int ret = 0;
252 enum cp_reason_type cp_reason = 0;
253 struct writeback_control wbc = {
254 .sync_mode = WB_SYNC_ALL,
255 .nr_to_write = LONG_MAX,
256 .for_reclaim = 0,
257 };
258 unsigned int seq_id = 0;
259
260 if (unlikely(f2fs_readonly(inode->i_sb)))
261 return 0;
262
263 trace_f2fs_sync_file_enter(inode);
264
265 if (S_ISDIR(inode->i_mode))
266 goto go_write;
267
268 /* if fdatasync is triggered, let's do in-place-update */
269 if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
270 set_inode_flag(inode, FI_NEED_IPU);
271 ret = file_write_and_wait_range(file, start, end);
272 clear_inode_flag(inode, FI_NEED_IPU);
273
274 if (ret || is_sbi_flag_set(sbi, SBI_CP_DISABLED)) {
275 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
276 return ret;
277 }
278
279 /* if the inode is dirty, let's recover all the time */
280 if (!f2fs_skip_inode_update(inode, datasync)) {
281 f2fs_write_inode(inode, NULL);
282 goto go_write;
283 }
284
285 /*
286 * if there is no written data, don't waste time to write recovery info.
287 */
288 if (!is_inode_flag_set(inode, FI_APPEND_WRITE) &&
289 !f2fs_exist_written_data(sbi, ino, APPEND_INO)) {
290
291 /* it may call write_inode just prior to fsync */
292 if (need_inode_page_update(sbi, ino))
293 goto go_write;
294
295 if (is_inode_flag_set(inode, FI_UPDATE_WRITE) ||
296 f2fs_exist_written_data(sbi, ino, UPDATE_INO))
297 goto flush_out;
298 goto out;
299 } else {
300 /*
301 * for OPU case, during fsync(), node can be persisted before
302 * data when lower device doesn't support write barrier, result
303 * in data corruption after SPO.
304 * So for strict fsync mode, force to use atomic write semantics
305 * to keep write order in between data/node and last node to
306 * avoid potential data corruption.
307 */
308 if (F2FS_OPTION(sbi).fsync_mode ==
309 FSYNC_MODE_STRICT && !atomic)
310 atomic = true;
311 }
312 go_write:
313 /*
314 * Both of fdatasync() and fsync() are able to be recovered from
315 * sudden-power-off.
316 */
317 f2fs_down_read(&F2FS_I(inode)->i_sem);
318 cp_reason = need_do_checkpoint(inode);
319 f2fs_up_read(&F2FS_I(inode)->i_sem);
320
321 if (cp_reason) {
322 /* all the dirty node pages should be flushed for POR */
323 ret = f2fs_sync_fs(inode->i_sb, 1);
324
325 /*
326 * We've secured consistency through sync_fs. Following pino
327 * will be used only for fsynced inodes after checkpoint.
328 */
329 try_to_fix_pino(inode);
330 clear_inode_flag(inode, FI_APPEND_WRITE);
331 clear_inode_flag(inode, FI_UPDATE_WRITE);
332 goto out;
333 }
334 sync_nodes:
335 atomic_inc(&sbi->wb_sync_req[NODE]);
336 ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic, &seq_id);
337 atomic_dec(&sbi->wb_sync_req[NODE]);
338 if (ret)
339 goto out;
340
341 /* if cp_error was enabled, we should avoid infinite loop */
342 if (unlikely(f2fs_cp_error(sbi))) {
343 ret = -EIO;
344 goto out;
345 }
346
347 if (f2fs_need_inode_block_update(sbi, ino)) {
348 f2fs_mark_inode_dirty_sync(inode, true);
349 f2fs_write_inode(inode, NULL);
350 goto sync_nodes;
351 }
352
353 /*
354 * If it's atomic_write, it's just fine to keep write ordering. So
355 * here we don't need to wait for node write completion, since we use
356 * node chain which serializes node blocks. If one of node writes are
357 * reordered, we can see simply broken chain, resulting in stopping
358 * roll-forward recovery. It means we'll recover all or none node blocks
359 * given fsync mark.
360 */
361 if (!atomic) {
362 ret = f2fs_wait_on_node_pages_writeback(sbi, seq_id);
363 if (ret)
364 goto out;
365 }
366
367 /* once recovery info is written, don't need to tack this */
368 f2fs_remove_ino_entry(sbi, ino, APPEND_INO);
369 clear_inode_flag(inode, FI_APPEND_WRITE);
370 flush_out:
371 if ((!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER) ||
372 (atomic && !test_opt(sbi, NOBARRIER) && f2fs_sb_has_blkzoned(sbi)))
373 ret = f2fs_issue_flush(sbi, inode->i_ino);
374 if (!ret) {
375 f2fs_remove_ino_entry(sbi, ino, UPDATE_INO);
376 clear_inode_flag(inode, FI_UPDATE_WRITE);
377 f2fs_remove_ino_entry(sbi, ino, FLUSH_INO);
378 }
379 f2fs_update_time(sbi, REQ_TIME);
380 out:
381 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
382 return ret;
383 }
384
f2fs_sync_file(struct file * file,loff_t start,loff_t end,int datasync)385 int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
386 {
387 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
388 return -EIO;
389 return f2fs_do_sync_file(file, start, end, datasync, false);
390 }
391
__found_offset(struct address_space * mapping,block_t blkaddr,pgoff_t index,int whence)392 static bool __found_offset(struct address_space *mapping, block_t blkaddr,
393 pgoff_t index, int whence)
394 {
395 switch (whence) {
396 case SEEK_DATA:
397 if (__is_valid_data_blkaddr(blkaddr))
398 return true;
399 if (blkaddr == NEW_ADDR &&
400 xa_get_mark(&mapping->i_pages, index, PAGECACHE_TAG_DIRTY))
401 return true;
402 break;
403 case SEEK_HOLE:
404 if (blkaddr == NULL_ADDR)
405 return true;
406 break;
407 }
408 return false;
409 }
410
f2fs_seek_block(struct file * file,loff_t offset,int whence)411 static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
412 {
413 struct inode *inode = file->f_mapping->host;
414 loff_t maxbytes = inode->i_sb->s_maxbytes;
415 struct dnode_of_data dn;
416 pgoff_t pgofs, end_offset;
417 loff_t data_ofs = offset;
418 loff_t isize;
419 int err = 0;
420
421 inode_lock(inode);
422
423 isize = i_size_read(inode);
424 if (offset >= isize)
425 goto fail;
426
427 /* handle inline data case */
428 if (f2fs_has_inline_data(inode)) {
429 if (whence == SEEK_HOLE) {
430 data_ofs = isize;
431 goto found;
432 } else if (whence == SEEK_DATA) {
433 data_ofs = offset;
434 goto found;
435 }
436 }
437
438 pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
439
440 for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
441 set_new_dnode(&dn, inode, NULL, NULL, 0);
442 err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
443 if (err && err != -ENOENT) {
444 goto fail;
445 } else if (err == -ENOENT) {
446 /* direct node does not exists */
447 if (whence == SEEK_DATA) {
448 pgofs = f2fs_get_next_page_offset(&dn, pgofs);
449 continue;
450 } else {
451 goto found;
452 }
453 }
454
455 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
456
457 /* find data/hole in dnode block */
458 for (; dn.ofs_in_node < end_offset;
459 dn.ofs_in_node++, pgofs++,
460 data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
461 block_t blkaddr;
462
463 blkaddr = f2fs_data_blkaddr(&dn);
464
465 if (__is_valid_data_blkaddr(blkaddr) &&
466 !f2fs_is_valid_blkaddr(F2FS_I_SB(inode),
467 blkaddr, DATA_GENERIC_ENHANCE)) {
468 f2fs_put_dnode(&dn);
469 goto fail;
470 }
471
472 if (__found_offset(file->f_mapping, blkaddr,
473 pgofs, whence)) {
474 f2fs_put_dnode(&dn);
475 goto found;
476 }
477 }
478 f2fs_put_dnode(&dn);
479 }
480
481 if (whence == SEEK_DATA)
482 goto fail;
483 found:
484 if (whence == SEEK_HOLE && data_ofs > isize)
485 data_ofs = isize;
486 inode_unlock(inode);
487 return vfs_setpos(file, data_ofs, maxbytes);
488 fail:
489 inode_unlock(inode);
490 return -ENXIO;
491 }
492
f2fs_llseek(struct file * file,loff_t offset,int whence)493 static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
494 {
495 struct inode *inode = file->f_mapping->host;
496 loff_t maxbytes = inode->i_sb->s_maxbytes;
497
498 if (f2fs_compressed_file(inode))
499 maxbytes = max_file_blocks(inode) << F2FS_BLKSIZE_BITS;
500
501 switch (whence) {
502 case SEEK_SET:
503 case SEEK_CUR:
504 case SEEK_END:
505 return generic_file_llseek_size(file, offset, whence,
506 maxbytes, i_size_read(inode));
507 case SEEK_DATA:
508 case SEEK_HOLE:
509 if (offset < 0)
510 return -ENXIO;
511 return f2fs_seek_block(file, offset, whence);
512 }
513
514 return -EINVAL;
515 }
516
f2fs_file_mmap(struct file * file,struct vm_area_struct * vma)517 static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
518 {
519 struct inode *inode = file_inode(file);
520
521 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
522 return -EIO;
523
524 if (!f2fs_is_compress_backend_ready(inode))
525 return -EOPNOTSUPP;
526
527 file_accessed(file);
528 vma->vm_ops = &f2fs_file_vm_ops;
529
530 f2fs_down_read(&F2FS_I(inode)->i_sem);
531 set_inode_flag(inode, FI_MMAP_FILE);
532 f2fs_up_read(&F2FS_I(inode)->i_sem);
533
534 return 0;
535 }
536
finish_preallocate_blocks(struct inode * inode)537 static int finish_preallocate_blocks(struct inode *inode)
538 {
539 int ret;
540
541 inode_lock(inode);
542 if (is_inode_flag_set(inode, FI_OPENED_FILE)) {
543 inode_unlock(inode);
544 return 0;
545 }
546
547 if (!file_should_truncate(inode)) {
548 set_inode_flag(inode, FI_OPENED_FILE);
549 inode_unlock(inode);
550 return 0;
551 }
552
553 f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
554 filemap_invalidate_lock(inode->i_mapping);
555
556 truncate_setsize(inode, i_size_read(inode));
557 ret = f2fs_truncate(inode);
558
559 filemap_invalidate_unlock(inode->i_mapping);
560 f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
561
562 if (!ret)
563 set_inode_flag(inode, FI_OPENED_FILE);
564
565 inode_unlock(inode);
566 if (ret)
567 return ret;
568
569 file_dont_truncate(inode);
570 return 0;
571 }
572
f2fs_file_open(struct inode * inode,struct file * filp)573 static int f2fs_file_open(struct inode *inode, struct file *filp)
574 {
575 int err = fscrypt_file_open(inode, filp);
576
577 if (err)
578 return err;
579
580 if (!f2fs_is_compress_backend_ready(inode))
581 return -EOPNOTSUPP;
582
583 err = fsverity_file_open(inode, filp);
584 if (err)
585 return err;
586
587 filp->f_mode |= FMODE_NOWAIT | FMODE_BUF_RASYNC;
588 filp->f_mode |= FMODE_CAN_ODIRECT;
589
590 err = dquot_file_open(inode, filp);
591 if (err)
592 return err;
593
594 return finish_preallocate_blocks(inode);
595 }
596
f2fs_truncate_data_blocks_range(struct dnode_of_data * dn,int count)597 void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count)
598 {
599 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
600 int nr_free = 0, ofs = dn->ofs_in_node, len = count;
601 __le32 *addr;
602 bool compressed_cluster = false;
603 int cluster_index = 0, valid_blocks = 0;
604 int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
605 bool released = !atomic_read(&F2FS_I(dn->inode)->i_compr_blocks);
606
607 addr = get_dnode_addr(dn->inode, dn->node_page) + ofs;
608
609 /* Assumption: truncation starts with cluster */
610 for (; count > 0; count--, addr++, dn->ofs_in_node++, cluster_index++) {
611 block_t blkaddr = le32_to_cpu(*addr);
612
613 if (f2fs_compressed_file(dn->inode) &&
614 !(cluster_index & (cluster_size - 1))) {
615 if (compressed_cluster)
616 f2fs_i_compr_blocks_update(dn->inode,
617 valid_blocks, false);
618 compressed_cluster = (blkaddr == COMPRESS_ADDR);
619 valid_blocks = 0;
620 }
621
622 if (blkaddr == NULL_ADDR)
623 continue;
624
625 f2fs_set_data_blkaddr(dn, NULL_ADDR);
626
627 if (__is_valid_data_blkaddr(blkaddr)) {
628 if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
629 DATA_GENERIC_ENHANCE))
630 continue;
631 if (compressed_cluster)
632 valid_blocks++;
633 }
634
635 f2fs_invalidate_blocks(sbi, blkaddr);
636
637 if (!released || blkaddr != COMPRESS_ADDR)
638 nr_free++;
639 }
640
641 if (compressed_cluster)
642 f2fs_i_compr_blocks_update(dn->inode, valid_blocks, false);
643
644 if (nr_free) {
645 pgoff_t fofs;
646 /*
647 * once we invalidate valid blkaddr in range [ofs, ofs + count],
648 * we will invalidate all blkaddr in the whole range.
649 */
650 fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page),
651 dn->inode) + ofs;
652 f2fs_update_read_extent_cache_range(dn, fofs, 0, len);
653 f2fs_update_age_extent_cache_range(dn, fofs, len);
654 dec_valid_block_count(sbi, dn->inode, nr_free);
655 }
656 dn->ofs_in_node = ofs;
657
658 f2fs_update_time(sbi, REQ_TIME);
659 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
660 dn->ofs_in_node, nr_free);
661 }
662
truncate_partial_data_page(struct inode * inode,u64 from,bool cache_only)663 static int truncate_partial_data_page(struct inode *inode, u64 from,
664 bool cache_only)
665 {
666 loff_t offset = from & (PAGE_SIZE - 1);
667 pgoff_t index = from >> PAGE_SHIFT;
668 struct address_space *mapping = inode->i_mapping;
669 struct page *page;
670
671 if (!offset && !cache_only)
672 return 0;
673
674 if (cache_only) {
675 page = find_lock_page(mapping, index);
676 if (page && PageUptodate(page))
677 goto truncate_out;
678 f2fs_put_page(page, 1);
679 return 0;
680 }
681
682 page = f2fs_get_lock_data_page(inode, index, true);
683 if (IS_ERR(page))
684 return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
685 truncate_out:
686 f2fs_wait_on_page_writeback(page, DATA, true, true);
687 zero_user(page, offset, PAGE_SIZE - offset);
688
689 /* An encrypted inode should have a key and truncate the last page. */
690 f2fs_bug_on(F2FS_I_SB(inode), cache_only && IS_ENCRYPTED(inode));
691 if (!cache_only)
692 set_page_dirty(page);
693 f2fs_put_page(page, 1);
694 return 0;
695 }
696
f2fs_do_truncate_blocks(struct inode * inode,u64 from,bool lock)697 int f2fs_do_truncate_blocks(struct inode *inode, u64 from, bool lock)
698 {
699 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
700 struct dnode_of_data dn;
701 pgoff_t free_from;
702 int count = 0, err = 0;
703 struct page *ipage;
704 bool truncate_page = false;
705
706 trace_f2fs_truncate_blocks_enter(inode, from);
707
708 free_from = (pgoff_t)F2FS_BLK_ALIGN(from);
709
710 if (free_from >= max_file_blocks(inode))
711 goto free_partial;
712
713 if (lock)
714 f2fs_lock_op(sbi);
715
716 ipage = f2fs_get_node_page(sbi, inode->i_ino);
717 if (IS_ERR(ipage)) {
718 err = PTR_ERR(ipage);
719 goto out;
720 }
721
722 if (f2fs_has_inline_data(inode)) {
723 f2fs_truncate_inline_inode(inode, ipage, from);
724 f2fs_put_page(ipage, 1);
725 truncate_page = true;
726 goto out;
727 }
728
729 set_new_dnode(&dn, inode, ipage, NULL, 0);
730 err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
731 if (err) {
732 if (err == -ENOENT)
733 goto free_next;
734 goto out;
735 }
736
737 count = ADDRS_PER_PAGE(dn.node_page, inode);
738
739 count -= dn.ofs_in_node;
740 f2fs_bug_on(sbi, count < 0);
741
742 if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
743 f2fs_truncate_data_blocks_range(&dn, count);
744 free_from += count;
745 }
746
747 f2fs_put_dnode(&dn);
748 free_next:
749 err = f2fs_truncate_inode_blocks(inode, free_from);
750 out:
751 if (lock)
752 f2fs_unlock_op(sbi);
753 free_partial:
754 /* lastly zero out the first data page */
755 if (!err)
756 err = truncate_partial_data_page(inode, from, truncate_page);
757
758 trace_f2fs_truncate_blocks_exit(inode, err);
759 return err;
760 }
761
f2fs_truncate_blocks(struct inode * inode,u64 from,bool lock)762 int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock)
763 {
764 u64 free_from = from;
765 int err;
766
767 #ifdef CONFIG_F2FS_FS_COMPRESSION
768 /*
769 * for compressed file, only support cluster size
770 * aligned truncation.
771 */
772 if (f2fs_compressed_file(inode))
773 free_from = round_up(from,
774 F2FS_I(inode)->i_cluster_size << PAGE_SHIFT);
775 #endif
776
777 err = f2fs_do_truncate_blocks(inode, free_from, lock);
778 if (err)
779 return err;
780
781 #ifdef CONFIG_F2FS_FS_COMPRESSION
782 /*
783 * For compressed file, after release compress blocks, don't allow write
784 * direct, but we should allow write direct after truncate to zero.
785 */
786 if (f2fs_compressed_file(inode) && !free_from
787 && is_inode_flag_set(inode, FI_COMPRESS_RELEASED))
788 clear_inode_flag(inode, FI_COMPRESS_RELEASED);
789
790 if (from != free_from) {
791 err = f2fs_truncate_partial_cluster(inode, from, lock);
792 if (err)
793 return err;
794 }
795 #endif
796
797 return 0;
798 }
799
f2fs_truncate(struct inode * inode)800 int f2fs_truncate(struct inode *inode)
801 {
802 int err;
803
804 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
805 return -EIO;
806
807 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
808 S_ISLNK(inode->i_mode)))
809 return 0;
810
811 trace_f2fs_truncate(inode);
812
813 if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE))
814 return -EIO;
815
816 err = f2fs_dquot_initialize(inode);
817 if (err)
818 return err;
819
820 /* we should check inline_data size */
821 if (!f2fs_may_inline_data(inode)) {
822 err = f2fs_convert_inline_inode(inode);
823 if (err)
824 return err;
825 }
826
827 err = f2fs_truncate_blocks(inode, i_size_read(inode), true);
828 if (err)
829 return err;
830
831 inode->i_mtime = inode_set_ctime_current(inode);
832 f2fs_mark_inode_dirty_sync(inode, false);
833 return 0;
834 }
835
f2fs_force_buffered_io(struct inode * inode,int rw)836 static bool f2fs_force_buffered_io(struct inode *inode, int rw)
837 {
838 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
839
840 if (!fscrypt_dio_supported(inode))
841 return true;
842 if (fsverity_active(inode))
843 return true;
844 if (f2fs_compressed_file(inode))
845 return true;
846 if (f2fs_has_inline_data(inode))
847 return true;
848
849 /* disallow direct IO if any of devices has unaligned blksize */
850 if (f2fs_is_multi_device(sbi) && !sbi->aligned_blksize)
851 return true;
852 /*
853 * for blkzoned device, fallback direct IO to buffered IO, so
854 * all IOs can be serialized by log-structured write.
855 */
856 if (f2fs_sb_has_blkzoned(sbi) && (rw == WRITE))
857 return true;
858 if (is_sbi_flag_set(sbi, SBI_CP_DISABLED))
859 return true;
860
861 return false;
862 }
863
f2fs_getattr(struct mnt_idmap * idmap,const struct path * path,struct kstat * stat,u32 request_mask,unsigned int query_flags)864 int f2fs_getattr(struct mnt_idmap *idmap, const struct path *path,
865 struct kstat *stat, u32 request_mask, unsigned int query_flags)
866 {
867 struct inode *inode = d_inode(path->dentry);
868 struct f2fs_inode_info *fi = F2FS_I(inode);
869 struct f2fs_inode *ri = NULL;
870 unsigned int flags;
871
872 if (f2fs_has_extra_attr(inode) &&
873 f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
874 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
875 stat->result_mask |= STATX_BTIME;
876 stat->btime.tv_sec = fi->i_crtime.tv_sec;
877 stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
878 }
879
880 /*
881 * Return the DIO alignment restrictions if requested. We only return
882 * this information when requested, since on encrypted files it might
883 * take a fair bit of work to get if the file wasn't opened recently.
884 *
885 * f2fs sometimes supports DIO reads but not DIO writes. STATX_DIOALIGN
886 * cannot represent that, so in that case we report no DIO support.
887 */
888 if ((request_mask & STATX_DIOALIGN) && S_ISREG(inode->i_mode)) {
889 unsigned int bsize = i_blocksize(inode);
890
891 stat->result_mask |= STATX_DIOALIGN;
892 if (!f2fs_force_buffered_io(inode, WRITE)) {
893 stat->dio_mem_align = bsize;
894 stat->dio_offset_align = bsize;
895 }
896 }
897
898 flags = fi->i_flags;
899 if (flags & F2FS_COMPR_FL)
900 stat->attributes |= STATX_ATTR_COMPRESSED;
901 if (flags & F2FS_APPEND_FL)
902 stat->attributes |= STATX_ATTR_APPEND;
903 if (IS_ENCRYPTED(inode))
904 stat->attributes |= STATX_ATTR_ENCRYPTED;
905 if (flags & F2FS_IMMUTABLE_FL)
906 stat->attributes |= STATX_ATTR_IMMUTABLE;
907 if (flags & F2FS_NODUMP_FL)
908 stat->attributes |= STATX_ATTR_NODUMP;
909 if (IS_VERITY(inode))
910 stat->attributes |= STATX_ATTR_VERITY;
911
912 stat->attributes_mask |= (STATX_ATTR_COMPRESSED |
913 STATX_ATTR_APPEND |
914 STATX_ATTR_ENCRYPTED |
915 STATX_ATTR_IMMUTABLE |
916 STATX_ATTR_NODUMP |
917 STATX_ATTR_VERITY);
918
919 generic_fillattr(idmap, request_mask, inode, stat);
920
921 /* we need to show initial sectors used for inline_data/dentries */
922 if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) ||
923 f2fs_has_inline_dentry(inode))
924 stat->blocks += (stat->size + 511) >> 9;
925
926 return 0;
927 }
928
929 #ifdef CONFIG_F2FS_FS_POSIX_ACL
__setattr_copy(struct mnt_idmap * idmap,struct inode * inode,const struct iattr * attr)930 static void __setattr_copy(struct mnt_idmap *idmap,
931 struct inode *inode, const struct iattr *attr)
932 {
933 unsigned int ia_valid = attr->ia_valid;
934
935 i_uid_update(idmap, attr, inode);
936 i_gid_update(idmap, attr, inode);
937 if (ia_valid & ATTR_ATIME)
938 inode->i_atime = attr->ia_atime;
939 if (ia_valid & ATTR_MTIME)
940 inode->i_mtime = attr->ia_mtime;
941 if (ia_valid & ATTR_CTIME)
942 inode_set_ctime_to_ts(inode, attr->ia_ctime);
943 if (ia_valid & ATTR_MODE) {
944 umode_t mode = attr->ia_mode;
945 vfsgid_t vfsgid = i_gid_into_vfsgid(idmap, inode);
946
947 if (!vfsgid_in_group_p(vfsgid) &&
948 !capable_wrt_inode_uidgid(idmap, inode, CAP_FSETID))
949 mode &= ~S_ISGID;
950 set_acl_inode(inode, mode);
951 }
952 }
953 #else
954 #define __setattr_copy setattr_copy
955 #endif
956
f2fs_setattr(struct mnt_idmap * idmap,struct dentry * dentry,struct iattr * attr)957 int f2fs_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
958 struct iattr *attr)
959 {
960 struct inode *inode = d_inode(dentry);
961 int err;
962
963 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
964 return -EIO;
965
966 if (unlikely(IS_IMMUTABLE(inode)))
967 return -EPERM;
968
969 if (unlikely(IS_APPEND(inode) &&
970 (attr->ia_valid & (ATTR_MODE | ATTR_UID |
971 ATTR_GID | ATTR_TIMES_SET))))
972 return -EPERM;
973
974 if ((attr->ia_valid & ATTR_SIZE)) {
975 if (!f2fs_is_compress_backend_ready(inode))
976 return -EOPNOTSUPP;
977 if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED) &&
978 !IS_ALIGNED(attr->ia_size,
979 F2FS_BLK_TO_BYTES(F2FS_I(inode)->i_cluster_size)))
980 return -EINVAL;
981 }
982
983 err = setattr_prepare(idmap, dentry, attr);
984 if (err)
985 return err;
986
987 err = fscrypt_prepare_setattr(dentry, attr);
988 if (err)
989 return err;
990
991 err = fsverity_prepare_setattr(dentry, attr);
992 if (err)
993 return err;
994
995 if (is_quota_modification(idmap, inode, attr)) {
996 err = f2fs_dquot_initialize(inode);
997 if (err)
998 return err;
999 }
1000 if (i_uid_needs_update(idmap, attr, inode) ||
1001 i_gid_needs_update(idmap, attr, inode)) {
1002 f2fs_lock_op(F2FS_I_SB(inode));
1003 err = dquot_transfer(idmap, inode, attr);
1004 if (err) {
1005 set_sbi_flag(F2FS_I_SB(inode),
1006 SBI_QUOTA_NEED_REPAIR);
1007 f2fs_unlock_op(F2FS_I_SB(inode));
1008 return err;
1009 }
1010 /*
1011 * update uid/gid under lock_op(), so that dquot and inode can
1012 * be updated atomically.
1013 */
1014 i_uid_update(idmap, attr, inode);
1015 i_gid_update(idmap, attr, inode);
1016 f2fs_mark_inode_dirty_sync(inode, true);
1017 f2fs_unlock_op(F2FS_I_SB(inode));
1018 }
1019
1020 if (attr->ia_valid & ATTR_SIZE) {
1021 loff_t old_size = i_size_read(inode);
1022
1023 if (attr->ia_size > MAX_INLINE_DATA(inode)) {
1024 /*
1025 * should convert inline inode before i_size_write to
1026 * keep smaller than inline_data size with inline flag.
1027 */
1028 err = f2fs_convert_inline_inode(inode);
1029 if (err)
1030 return err;
1031 }
1032
1033 f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1034 filemap_invalidate_lock(inode->i_mapping);
1035
1036 truncate_setsize(inode, attr->ia_size);
1037
1038 if (attr->ia_size <= old_size)
1039 err = f2fs_truncate(inode);
1040 /*
1041 * do not trim all blocks after i_size if target size is
1042 * larger than i_size.
1043 */
1044 filemap_invalidate_unlock(inode->i_mapping);
1045 f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1046 if (err)
1047 return err;
1048
1049 spin_lock(&F2FS_I(inode)->i_size_lock);
1050 inode->i_mtime = inode_set_ctime_current(inode);
1051 F2FS_I(inode)->last_disk_size = i_size_read(inode);
1052 spin_unlock(&F2FS_I(inode)->i_size_lock);
1053 }
1054
1055 __setattr_copy(idmap, inode, attr);
1056
1057 if (attr->ia_valid & ATTR_MODE) {
1058 err = posix_acl_chmod(idmap, dentry, f2fs_get_inode_mode(inode));
1059
1060 if (is_inode_flag_set(inode, FI_ACL_MODE)) {
1061 if (!err)
1062 inode->i_mode = F2FS_I(inode)->i_acl_mode;
1063 clear_inode_flag(inode, FI_ACL_MODE);
1064 }
1065 }
1066
1067 /* file size may changed here */
1068 f2fs_mark_inode_dirty_sync(inode, true);
1069
1070 /* inode change will produce dirty node pages flushed by checkpoint */
1071 f2fs_balance_fs(F2FS_I_SB(inode), true);
1072
1073 return err;
1074 }
1075
1076 const struct inode_operations f2fs_file_inode_operations = {
1077 .getattr = f2fs_getattr,
1078 .setattr = f2fs_setattr,
1079 .get_inode_acl = f2fs_get_acl,
1080 .set_acl = f2fs_set_acl,
1081 .listxattr = f2fs_listxattr,
1082 .fiemap = f2fs_fiemap,
1083 .fileattr_get = f2fs_fileattr_get,
1084 .fileattr_set = f2fs_fileattr_set,
1085 };
1086
fill_zero(struct inode * inode,pgoff_t index,loff_t start,loff_t len)1087 static int fill_zero(struct inode *inode, pgoff_t index,
1088 loff_t start, loff_t len)
1089 {
1090 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1091 struct page *page;
1092
1093 if (!len)
1094 return 0;
1095
1096 f2fs_balance_fs(sbi, true);
1097
1098 f2fs_lock_op(sbi);
1099 page = f2fs_get_new_data_page(inode, NULL, index, false);
1100 f2fs_unlock_op(sbi);
1101
1102 if (IS_ERR(page))
1103 return PTR_ERR(page);
1104
1105 f2fs_wait_on_page_writeback(page, DATA, true, true);
1106 zero_user(page, start, len);
1107 set_page_dirty(page);
1108 f2fs_put_page(page, 1);
1109 return 0;
1110 }
1111
f2fs_truncate_hole(struct inode * inode,pgoff_t pg_start,pgoff_t pg_end)1112 int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
1113 {
1114 int err;
1115
1116 while (pg_start < pg_end) {
1117 struct dnode_of_data dn;
1118 pgoff_t end_offset, count;
1119
1120 set_new_dnode(&dn, inode, NULL, NULL, 0);
1121 err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
1122 if (err) {
1123 if (err == -ENOENT) {
1124 pg_start = f2fs_get_next_page_offset(&dn,
1125 pg_start);
1126 continue;
1127 }
1128 return err;
1129 }
1130
1131 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1132 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
1133
1134 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
1135
1136 f2fs_truncate_data_blocks_range(&dn, count);
1137 f2fs_put_dnode(&dn);
1138
1139 pg_start += count;
1140 }
1141 return 0;
1142 }
1143
f2fs_punch_hole(struct inode * inode,loff_t offset,loff_t len)1144 static int f2fs_punch_hole(struct inode *inode, loff_t offset, loff_t len)
1145 {
1146 pgoff_t pg_start, pg_end;
1147 loff_t off_start, off_end;
1148 int ret;
1149
1150 ret = f2fs_convert_inline_inode(inode);
1151 if (ret)
1152 return ret;
1153
1154 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1155 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
1156
1157 off_start = offset & (PAGE_SIZE - 1);
1158 off_end = (offset + len) & (PAGE_SIZE - 1);
1159
1160 if (pg_start == pg_end) {
1161 ret = fill_zero(inode, pg_start, off_start,
1162 off_end - off_start);
1163 if (ret)
1164 return ret;
1165 } else {
1166 if (off_start) {
1167 ret = fill_zero(inode, pg_start++, off_start,
1168 PAGE_SIZE - off_start);
1169 if (ret)
1170 return ret;
1171 }
1172 if (off_end) {
1173 ret = fill_zero(inode, pg_end, 0, off_end);
1174 if (ret)
1175 return ret;
1176 }
1177
1178 if (pg_start < pg_end) {
1179 loff_t blk_start, blk_end;
1180 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1181
1182 f2fs_balance_fs(sbi, true);
1183
1184 blk_start = (loff_t)pg_start << PAGE_SHIFT;
1185 blk_end = (loff_t)pg_end << PAGE_SHIFT;
1186
1187 f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1188 filemap_invalidate_lock(inode->i_mapping);
1189
1190 truncate_pagecache_range(inode, blk_start, blk_end - 1);
1191
1192 f2fs_lock_op(sbi);
1193 ret = f2fs_truncate_hole(inode, pg_start, pg_end);
1194 f2fs_unlock_op(sbi);
1195
1196 filemap_invalidate_unlock(inode->i_mapping);
1197 f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1198 }
1199 }
1200
1201 return ret;
1202 }
1203
__read_out_blkaddrs(struct inode * inode,block_t * blkaddr,int * do_replace,pgoff_t off,pgoff_t len)1204 static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr,
1205 int *do_replace, pgoff_t off, pgoff_t len)
1206 {
1207 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1208 struct dnode_of_data dn;
1209 int ret, done, i;
1210
1211 next_dnode:
1212 set_new_dnode(&dn, inode, NULL, NULL, 0);
1213 ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA);
1214 if (ret && ret != -ENOENT) {
1215 return ret;
1216 } else if (ret == -ENOENT) {
1217 if (dn.max_level == 0)
1218 return -ENOENT;
1219 done = min((pgoff_t)ADDRS_PER_BLOCK(inode) -
1220 dn.ofs_in_node, len);
1221 blkaddr += done;
1222 do_replace += done;
1223 goto next;
1224 }
1225
1226 done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) -
1227 dn.ofs_in_node, len);
1228 for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) {
1229 *blkaddr = f2fs_data_blkaddr(&dn);
1230
1231 if (__is_valid_data_blkaddr(*blkaddr) &&
1232 !f2fs_is_valid_blkaddr(sbi, *blkaddr,
1233 DATA_GENERIC_ENHANCE)) {
1234 f2fs_put_dnode(&dn);
1235 f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
1236 return -EFSCORRUPTED;
1237 }
1238
1239 if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) {
1240
1241 if (f2fs_lfs_mode(sbi)) {
1242 f2fs_put_dnode(&dn);
1243 return -EOPNOTSUPP;
1244 }
1245
1246 /* do not invalidate this block address */
1247 f2fs_update_data_blkaddr(&dn, NULL_ADDR);
1248 *do_replace = 1;
1249 }
1250 }
1251 f2fs_put_dnode(&dn);
1252 next:
1253 len -= done;
1254 off += done;
1255 if (len)
1256 goto next_dnode;
1257 return 0;
1258 }
1259
__roll_back_blkaddrs(struct inode * inode,block_t * blkaddr,int * do_replace,pgoff_t off,int len)1260 static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr,
1261 int *do_replace, pgoff_t off, int len)
1262 {
1263 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1264 struct dnode_of_data dn;
1265 int ret, i;
1266
1267 for (i = 0; i < len; i++, do_replace++, blkaddr++) {
1268 if (*do_replace == 0)
1269 continue;
1270
1271 set_new_dnode(&dn, inode, NULL, NULL, 0);
1272 ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA);
1273 if (ret) {
1274 dec_valid_block_count(sbi, inode, 1);
1275 f2fs_invalidate_blocks(sbi, *blkaddr);
1276 } else {
1277 f2fs_update_data_blkaddr(&dn, *blkaddr);
1278 }
1279 f2fs_put_dnode(&dn);
1280 }
1281 return 0;
1282 }
1283
__clone_blkaddrs(struct inode * src_inode,struct inode * dst_inode,block_t * blkaddr,int * do_replace,pgoff_t src,pgoff_t dst,pgoff_t len,bool full)1284 static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode,
1285 block_t *blkaddr, int *do_replace,
1286 pgoff_t src, pgoff_t dst, pgoff_t len, bool full)
1287 {
1288 struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode);
1289 pgoff_t i = 0;
1290 int ret;
1291
1292 while (i < len) {
1293 if (blkaddr[i] == NULL_ADDR && !full) {
1294 i++;
1295 continue;
1296 }
1297
1298 if (do_replace[i] || blkaddr[i] == NULL_ADDR) {
1299 struct dnode_of_data dn;
1300 struct node_info ni;
1301 size_t new_size;
1302 pgoff_t ilen;
1303
1304 set_new_dnode(&dn, dst_inode, NULL, NULL, 0);
1305 ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE);
1306 if (ret)
1307 return ret;
1308
1309 ret = f2fs_get_node_info(sbi, dn.nid, &ni, false);
1310 if (ret) {
1311 f2fs_put_dnode(&dn);
1312 return ret;
1313 }
1314
1315 ilen = min((pgoff_t)
1316 ADDRS_PER_PAGE(dn.node_page, dst_inode) -
1317 dn.ofs_in_node, len - i);
1318 do {
1319 dn.data_blkaddr = f2fs_data_blkaddr(&dn);
1320 f2fs_truncate_data_blocks_range(&dn, 1);
1321
1322 if (do_replace[i]) {
1323 f2fs_i_blocks_write(src_inode,
1324 1, false, false);
1325 f2fs_i_blocks_write(dst_inode,
1326 1, true, false);
1327 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
1328 blkaddr[i], ni.version, true, false);
1329
1330 do_replace[i] = 0;
1331 }
1332 dn.ofs_in_node++;
1333 i++;
1334 new_size = (loff_t)(dst + i) << PAGE_SHIFT;
1335 if (dst_inode->i_size < new_size)
1336 f2fs_i_size_write(dst_inode, new_size);
1337 } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR));
1338
1339 f2fs_put_dnode(&dn);
1340 } else {
1341 struct page *psrc, *pdst;
1342
1343 psrc = f2fs_get_lock_data_page(src_inode,
1344 src + i, true);
1345 if (IS_ERR(psrc))
1346 return PTR_ERR(psrc);
1347 pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i,
1348 true);
1349 if (IS_ERR(pdst)) {
1350 f2fs_put_page(psrc, 1);
1351 return PTR_ERR(pdst);
1352 }
1353
1354 f2fs_wait_on_page_writeback(pdst, DATA, true, true);
1355
1356 memcpy_page(pdst, 0, psrc, 0, PAGE_SIZE);
1357 set_page_dirty(pdst);
1358 set_page_private_gcing(pdst);
1359 f2fs_put_page(pdst, 1);
1360 f2fs_put_page(psrc, 1);
1361
1362 ret = f2fs_truncate_hole(src_inode,
1363 src + i, src + i + 1);
1364 if (ret)
1365 return ret;
1366 i++;
1367 }
1368 }
1369 return 0;
1370 }
1371
__exchange_data_block(struct inode * src_inode,struct inode * dst_inode,pgoff_t src,pgoff_t dst,pgoff_t len,bool full)1372 static int __exchange_data_block(struct inode *src_inode,
1373 struct inode *dst_inode, pgoff_t src, pgoff_t dst,
1374 pgoff_t len, bool full)
1375 {
1376 block_t *src_blkaddr;
1377 int *do_replace;
1378 pgoff_t olen;
1379 int ret;
1380
1381 while (len) {
1382 olen = min((pgoff_t)4 * ADDRS_PER_BLOCK(src_inode), len);
1383
1384 src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1385 array_size(olen, sizeof(block_t)),
1386 GFP_NOFS);
1387 if (!src_blkaddr)
1388 return -ENOMEM;
1389
1390 do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1391 array_size(olen, sizeof(int)),
1392 GFP_NOFS);
1393 if (!do_replace) {
1394 kvfree(src_blkaddr);
1395 return -ENOMEM;
1396 }
1397
1398 ret = __read_out_blkaddrs(src_inode, src_blkaddr,
1399 do_replace, src, olen);
1400 if (ret)
1401 goto roll_back;
1402
1403 ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr,
1404 do_replace, src, dst, olen, full);
1405 if (ret)
1406 goto roll_back;
1407
1408 src += olen;
1409 dst += olen;
1410 len -= olen;
1411
1412 kvfree(src_blkaddr);
1413 kvfree(do_replace);
1414 }
1415 return 0;
1416
1417 roll_back:
1418 __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen);
1419 kvfree(src_blkaddr);
1420 kvfree(do_replace);
1421 return ret;
1422 }
1423
f2fs_do_collapse(struct inode * inode,loff_t offset,loff_t len)1424 static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len)
1425 {
1426 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1427 pgoff_t nrpages = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
1428 pgoff_t start = offset >> PAGE_SHIFT;
1429 pgoff_t end = (offset + len) >> PAGE_SHIFT;
1430 int ret;
1431
1432 f2fs_balance_fs(sbi, true);
1433
1434 /* avoid gc operation during block exchange */
1435 f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1436 filemap_invalidate_lock(inode->i_mapping);
1437
1438 f2fs_lock_op(sbi);
1439 f2fs_drop_extent_tree(inode);
1440 truncate_pagecache(inode, offset);
1441 ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
1442 f2fs_unlock_op(sbi);
1443
1444 filemap_invalidate_unlock(inode->i_mapping);
1445 f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1446 return ret;
1447 }
1448
f2fs_collapse_range(struct inode * inode,loff_t offset,loff_t len)1449 static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
1450 {
1451 loff_t new_size;
1452 int ret;
1453
1454 if (offset + len >= i_size_read(inode))
1455 return -EINVAL;
1456
1457 /* collapse range should be aligned to block size of f2fs. */
1458 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1459 return -EINVAL;
1460
1461 ret = f2fs_convert_inline_inode(inode);
1462 if (ret)
1463 return ret;
1464
1465 /* write out all dirty pages from offset */
1466 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1467 if (ret)
1468 return ret;
1469
1470 ret = f2fs_do_collapse(inode, offset, len);
1471 if (ret)
1472 return ret;
1473
1474 /* write out all moved pages, if possible */
1475 filemap_invalidate_lock(inode->i_mapping);
1476 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1477 truncate_pagecache(inode, offset);
1478
1479 new_size = i_size_read(inode) - len;
1480 ret = f2fs_truncate_blocks(inode, new_size, true);
1481 filemap_invalidate_unlock(inode->i_mapping);
1482 if (!ret)
1483 f2fs_i_size_write(inode, new_size);
1484 return ret;
1485 }
1486
f2fs_do_zero_range(struct dnode_of_data * dn,pgoff_t start,pgoff_t end)1487 static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start,
1488 pgoff_t end)
1489 {
1490 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1491 pgoff_t index = start;
1492 unsigned int ofs_in_node = dn->ofs_in_node;
1493 blkcnt_t count = 0;
1494 int ret;
1495
1496 for (; index < end; index++, dn->ofs_in_node++) {
1497 if (f2fs_data_blkaddr(dn) == NULL_ADDR)
1498 count++;
1499 }
1500
1501 dn->ofs_in_node = ofs_in_node;
1502 ret = f2fs_reserve_new_blocks(dn, count);
1503 if (ret)
1504 return ret;
1505
1506 dn->ofs_in_node = ofs_in_node;
1507 for (index = start; index < end; index++, dn->ofs_in_node++) {
1508 dn->data_blkaddr = f2fs_data_blkaddr(dn);
1509 /*
1510 * f2fs_reserve_new_blocks will not guarantee entire block
1511 * allocation.
1512 */
1513 if (dn->data_blkaddr == NULL_ADDR) {
1514 ret = -ENOSPC;
1515 break;
1516 }
1517
1518 if (dn->data_blkaddr == NEW_ADDR)
1519 continue;
1520
1521 if (!f2fs_is_valid_blkaddr(sbi, dn->data_blkaddr,
1522 DATA_GENERIC_ENHANCE)) {
1523 ret = -EFSCORRUPTED;
1524 f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
1525 break;
1526 }
1527
1528 f2fs_invalidate_blocks(sbi, dn->data_blkaddr);
1529 f2fs_set_data_blkaddr(dn, NEW_ADDR);
1530 }
1531
1532 f2fs_update_read_extent_cache_range(dn, start, 0, index - start);
1533 f2fs_update_age_extent_cache_range(dn, start, index - start);
1534
1535 return ret;
1536 }
1537
f2fs_zero_range(struct inode * inode,loff_t offset,loff_t len,int mode)1538 static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
1539 int mode)
1540 {
1541 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1542 struct address_space *mapping = inode->i_mapping;
1543 pgoff_t index, pg_start, pg_end;
1544 loff_t new_size = i_size_read(inode);
1545 loff_t off_start, off_end;
1546 int ret = 0;
1547
1548 ret = inode_newsize_ok(inode, (len + offset));
1549 if (ret)
1550 return ret;
1551
1552 ret = f2fs_convert_inline_inode(inode);
1553 if (ret)
1554 return ret;
1555
1556 ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
1557 if (ret)
1558 return ret;
1559
1560 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1561 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
1562
1563 off_start = offset & (PAGE_SIZE - 1);
1564 off_end = (offset + len) & (PAGE_SIZE - 1);
1565
1566 if (pg_start == pg_end) {
1567 ret = fill_zero(inode, pg_start, off_start,
1568 off_end - off_start);
1569 if (ret)
1570 return ret;
1571
1572 new_size = max_t(loff_t, new_size, offset + len);
1573 } else {
1574 if (off_start) {
1575 ret = fill_zero(inode, pg_start++, off_start,
1576 PAGE_SIZE - off_start);
1577 if (ret)
1578 return ret;
1579
1580 new_size = max_t(loff_t, new_size,
1581 (loff_t)pg_start << PAGE_SHIFT);
1582 }
1583
1584 for (index = pg_start; index < pg_end;) {
1585 struct dnode_of_data dn;
1586 unsigned int end_offset;
1587 pgoff_t end;
1588
1589 f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1590 filemap_invalidate_lock(mapping);
1591
1592 truncate_pagecache_range(inode,
1593 (loff_t)index << PAGE_SHIFT,
1594 ((loff_t)pg_end << PAGE_SHIFT) - 1);
1595
1596 f2fs_lock_op(sbi);
1597
1598 set_new_dnode(&dn, inode, NULL, NULL, 0);
1599 ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE);
1600 if (ret) {
1601 f2fs_unlock_op(sbi);
1602 filemap_invalidate_unlock(mapping);
1603 f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1604 goto out;
1605 }
1606
1607 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1608 end = min(pg_end, end_offset - dn.ofs_in_node + index);
1609
1610 ret = f2fs_do_zero_range(&dn, index, end);
1611 f2fs_put_dnode(&dn);
1612
1613 f2fs_unlock_op(sbi);
1614 filemap_invalidate_unlock(mapping);
1615 f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1616
1617 f2fs_balance_fs(sbi, dn.node_changed);
1618
1619 if (ret)
1620 goto out;
1621
1622 index = end;
1623 new_size = max_t(loff_t, new_size,
1624 (loff_t)index << PAGE_SHIFT);
1625 }
1626
1627 if (off_end) {
1628 ret = fill_zero(inode, pg_end, 0, off_end);
1629 if (ret)
1630 goto out;
1631
1632 new_size = max_t(loff_t, new_size, offset + len);
1633 }
1634 }
1635
1636 out:
1637 if (new_size > i_size_read(inode)) {
1638 if (mode & FALLOC_FL_KEEP_SIZE)
1639 file_set_keep_isize(inode);
1640 else
1641 f2fs_i_size_write(inode, new_size);
1642 }
1643 return ret;
1644 }
1645
f2fs_insert_range(struct inode * inode,loff_t offset,loff_t len)1646 static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
1647 {
1648 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1649 struct address_space *mapping = inode->i_mapping;
1650 pgoff_t nr, pg_start, pg_end, delta, idx;
1651 loff_t new_size;
1652 int ret = 0;
1653
1654 new_size = i_size_read(inode) + len;
1655 ret = inode_newsize_ok(inode, new_size);
1656 if (ret)
1657 return ret;
1658
1659 if (offset >= i_size_read(inode))
1660 return -EINVAL;
1661
1662 /* insert range should be aligned to block size of f2fs. */
1663 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1664 return -EINVAL;
1665
1666 ret = f2fs_convert_inline_inode(inode);
1667 if (ret)
1668 return ret;
1669
1670 f2fs_balance_fs(sbi, true);
1671
1672 filemap_invalidate_lock(mapping);
1673 ret = f2fs_truncate_blocks(inode, i_size_read(inode), true);
1674 filemap_invalidate_unlock(mapping);
1675 if (ret)
1676 return ret;
1677
1678 /* write out all dirty pages from offset */
1679 ret = filemap_write_and_wait_range(mapping, offset, LLONG_MAX);
1680 if (ret)
1681 return ret;
1682
1683 pg_start = offset >> PAGE_SHIFT;
1684 pg_end = (offset + len) >> PAGE_SHIFT;
1685 delta = pg_end - pg_start;
1686 idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
1687
1688 /* avoid gc operation during block exchange */
1689 f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1690 filemap_invalidate_lock(mapping);
1691 truncate_pagecache(inode, offset);
1692
1693 while (!ret && idx > pg_start) {
1694 nr = idx - pg_start;
1695 if (nr > delta)
1696 nr = delta;
1697 idx -= nr;
1698
1699 f2fs_lock_op(sbi);
1700 f2fs_drop_extent_tree(inode);
1701
1702 ret = __exchange_data_block(inode, inode, idx,
1703 idx + delta, nr, false);
1704 f2fs_unlock_op(sbi);
1705 }
1706 filemap_invalidate_unlock(mapping);
1707 f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1708
1709 /* write out all moved pages, if possible */
1710 filemap_invalidate_lock(mapping);
1711 filemap_write_and_wait_range(mapping, offset, LLONG_MAX);
1712 truncate_pagecache(inode, offset);
1713 filemap_invalidate_unlock(mapping);
1714
1715 if (!ret)
1716 f2fs_i_size_write(inode, new_size);
1717 return ret;
1718 }
1719
f2fs_expand_inode_data(struct inode * inode,loff_t offset,loff_t len,int mode)1720 static int f2fs_expand_inode_data(struct inode *inode, loff_t offset,
1721 loff_t len, int mode)
1722 {
1723 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1724 struct f2fs_map_blocks map = { .m_next_pgofs = NULL,
1725 .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE,
1726 .m_may_create = true };
1727 struct f2fs_gc_control gc_control = { .victim_segno = NULL_SEGNO,
1728 .init_gc_type = FG_GC,
1729 .should_migrate_blocks = false,
1730 .err_gc_skipped = true,
1731 .nr_free_secs = 0 };
1732 pgoff_t pg_start, pg_end;
1733 loff_t new_size;
1734 loff_t off_end;
1735 block_t expanded = 0;
1736 int err;
1737
1738 err = inode_newsize_ok(inode, (len + offset));
1739 if (err)
1740 return err;
1741
1742 err = f2fs_convert_inline_inode(inode);
1743 if (err)
1744 return err;
1745
1746 f2fs_balance_fs(sbi, true);
1747
1748 pg_start = ((unsigned long long)offset) >> PAGE_SHIFT;
1749 pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT;
1750 off_end = (offset + len) & (PAGE_SIZE - 1);
1751
1752 map.m_lblk = pg_start;
1753 map.m_len = pg_end - pg_start;
1754 if (off_end)
1755 map.m_len++;
1756
1757 if (!map.m_len)
1758 return 0;
1759
1760 if (f2fs_is_pinned_file(inode)) {
1761 block_t sec_blks = CAP_BLKS_PER_SEC(sbi);
1762 block_t sec_len = roundup(map.m_len, sec_blks);
1763
1764 map.m_len = sec_blks;
1765 next_alloc:
1766 if (has_not_enough_free_secs(sbi, 0,
1767 GET_SEC_FROM_SEG(sbi, overprovision_segments(sbi)))) {
1768 f2fs_down_write(&sbi->gc_lock);
1769 stat_inc_gc_call_count(sbi, FOREGROUND);
1770 err = f2fs_gc(sbi, &gc_control);
1771 if (err && err != -ENODATA)
1772 goto out_err;
1773 }
1774
1775 f2fs_down_write(&sbi->pin_sem);
1776
1777 err = f2fs_allocate_pinning_section(sbi);
1778 if (err) {
1779 f2fs_up_write(&sbi->pin_sem);
1780 goto out_err;
1781 }
1782
1783 map.m_seg_type = CURSEG_COLD_DATA_PINNED;
1784 err = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_PRE_DIO);
1785 file_dont_truncate(inode);
1786
1787 f2fs_up_write(&sbi->pin_sem);
1788
1789 expanded += map.m_len;
1790 sec_len -= map.m_len;
1791 map.m_lblk += map.m_len;
1792 if (!err && sec_len)
1793 goto next_alloc;
1794
1795 map.m_len = expanded;
1796 } else {
1797 err = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_PRE_AIO);
1798 expanded = map.m_len;
1799 }
1800 out_err:
1801 if (err) {
1802 pgoff_t last_off;
1803
1804 if (!expanded)
1805 return err;
1806
1807 last_off = pg_start + expanded - 1;
1808
1809 /* update new size to the failed position */
1810 new_size = (last_off == pg_end) ? offset + len :
1811 (loff_t)(last_off + 1) << PAGE_SHIFT;
1812 } else {
1813 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
1814 }
1815
1816 if (new_size > i_size_read(inode)) {
1817 if (mode & FALLOC_FL_KEEP_SIZE)
1818 file_set_keep_isize(inode);
1819 else
1820 f2fs_i_size_write(inode, new_size);
1821 }
1822
1823 return err;
1824 }
1825
f2fs_fallocate(struct file * file,int mode,loff_t offset,loff_t len)1826 static long f2fs_fallocate(struct file *file, int mode,
1827 loff_t offset, loff_t len)
1828 {
1829 struct inode *inode = file_inode(file);
1830 long ret = 0;
1831
1832 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
1833 return -EIO;
1834 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode)))
1835 return -ENOSPC;
1836 if (!f2fs_is_compress_backend_ready(inode))
1837 return -EOPNOTSUPP;
1838
1839 /* f2fs only support ->fallocate for regular file */
1840 if (!S_ISREG(inode->i_mode))
1841 return -EINVAL;
1842
1843 if (IS_ENCRYPTED(inode) &&
1844 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
1845 return -EOPNOTSUPP;
1846
1847 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
1848 FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1849 FALLOC_FL_INSERT_RANGE))
1850 return -EOPNOTSUPP;
1851
1852 inode_lock(inode);
1853
1854 /*
1855 * Pinned file should not support partial truncation since the block
1856 * can be used by applications.
1857 */
1858 if ((f2fs_compressed_file(inode) || f2fs_is_pinned_file(inode)) &&
1859 (mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE |
1860 FALLOC_FL_ZERO_RANGE | FALLOC_FL_INSERT_RANGE))) {
1861 ret = -EOPNOTSUPP;
1862 goto out;
1863 }
1864
1865 ret = file_modified(file);
1866 if (ret)
1867 goto out;
1868
1869 if (mode & FALLOC_FL_PUNCH_HOLE) {
1870 if (offset >= inode->i_size)
1871 goto out;
1872
1873 ret = f2fs_punch_hole(inode, offset, len);
1874 } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1875 ret = f2fs_collapse_range(inode, offset, len);
1876 } else if (mode & FALLOC_FL_ZERO_RANGE) {
1877 ret = f2fs_zero_range(inode, offset, len, mode);
1878 } else if (mode & FALLOC_FL_INSERT_RANGE) {
1879 ret = f2fs_insert_range(inode, offset, len);
1880 } else {
1881 ret = f2fs_expand_inode_data(inode, offset, len, mode);
1882 }
1883
1884 if (!ret) {
1885 inode->i_mtime = inode_set_ctime_current(inode);
1886 f2fs_mark_inode_dirty_sync(inode, false);
1887 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1888 }
1889
1890 out:
1891 inode_unlock(inode);
1892
1893 trace_f2fs_fallocate(inode, mode, offset, len, ret);
1894 return ret;
1895 }
1896
f2fs_release_file(struct inode * inode,struct file * filp)1897 static int f2fs_release_file(struct inode *inode, struct file *filp)
1898 {
1899 /*
1900 * f2fs_release_file is called at every close calls. So we should
1901 * not drop any inmemory pages by close called by other process.
1902 */
1903 if (!(filp->f_mode & FMODE_WRITE) ||
1904 atomic_read(&inode->i_writecount) != 1)
1905 return 0;
1906
1907 inode_lock(inode);
1908 f2fs_abort_atomic_write(inode, true);
1909 inode_unlock(inode);
1910
1911 return 0;
1912 }
1913
f2fs_file_flush(struct file * file,fl_owner_t id)1914 static int f2fs_file_flush(struct file *file, fl_owner_t id)
1915 {
1916 struct inode *inode = file_inode(file);
1917
1918 /*
1919 * If the process doing a transaction is crashed, we should do
1920 * roll-back. Otherwise, other reader/write can see corrupted database
1921 * until all the writers close its file. Since this should be done
1922 * before dropping file lock, it needs to do in ->flush.
1923 */
1924 if (F2FS_I(inode)->atomic_write_task == current &&
1925 (current->flags & PF_EXITING)) {
1926 inode_lock(inode);
1927 f2fs_abort_atomic_write(inode, true);
1928 inode_unlock(inode);
1929 }
1930
1931 return 0;
1932 }
1933
f2fs_setflags_common(struct inode * inode,u32 iflags,u32 mask)1934 static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask)
1935 {
1936 struct f2fs_inode_info *fi = F2FS_I(inode);
1937 u32 masked_flags = fi->i_flags & mask;
1938
1939 /* mask can be shrunk by flags_valid selector */
1940 iflags &= mask;
1941
1942 /* Is it quota file? Do not allow user to mess with it */
1943 if (IS_NOQUOTA(inode))
1944 return -EPERM;
1945
1946 if ((iflags ^ masked_flags) & F2FS_CASEFOLD_FL) {
1947 if (!f2fs_sb_has_casefold(F2FS_I_SB(inode)))
1948 return -EOPNOTSUPP;
1949 if (!f2fs_empty_dir(inode))
1950 return -ENOTEMPTY;
1951 }
1952
1953 if (iflags & (F2FS_COMPR_FL | F2FS_NOCOMP_FL)) {
1954 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
1955 return -EOPNOTSUPP;
1956 if ((iflags & F2FS_COMPR_FL) && (iflags & F2FS_NOCOMP_FL))
1957 return -EINVAL;
1958 }
1959
1960 if ((iflags ^ masked_flags) & F2FS_COMPR_FL) {
1961 if (masked_flags & F2FS_COMPR_FL) {
1962 if (!f2fs_disable_compressed_file(inode))
1963 return -EINVAL;
1964 } else {
1965 /* try to convert inline_data to support compression */
1966 int err = f2fs_convert_inline_inode(inode);
1967 if (err)
1968 return err;
1969
1970 f2fs_down_write(&F2FS_I(inode)->i_sem);
1971 if (!f2fs_may_compress(inode) ||
1972 (S_ISREG(inode->i_mode) &&
1973 F2FS_HAS_BLOCKS(inode))) {
1974 f2fs_up_write(&F2FS_I(inode)->i_sem);
1975 return -EINVAL;
1976 }
1977 err = set_compress_context(inode);
1978 f2fs_up_write(&F2FS_I(inode)->i_sem);
1979
1980 if (err)
1981 return err;
1982 }
1983 }
1984
1985 fi->i_flags = iflags | (fi->i_flags & ~mask);
1986 f2fs_bug_on(F2FS_I_SB(inode), (fi->i_flags & F2FS_COMPR_FL) &&
1987 (fi->i_flags & F2FS_NOCOMP_FL));
1988
1989 if (fi->i_flags & F2FS_PROJINHERIT_FL)
1990 set_inode_flag(inode, FI_PROJ_INHERIT);
1991 else
1992 clear_inode_flag(inode, FI_PROJ_INHERIT);
1993
1994 inode_set_ctime_current(inode);
1995 f2fs_set_inode_flags(inode);
1996 f2fs_mark_inode_dirty_sync(inode, true);
1997 return 0;
1998 }
1999
2000 /* FS_IOC_[GS]ETFLAGS and FS_IOC_FS[GS]ETXATTR support */
2001
2002 /*
2003 * To make a new on-disk f2fs i_flag gettable via FS_IOC_GETFLAGS, add an entry
2004 * for it to f2fs_fsflags_map[], and add its FS_*_FL equivalent to
2005 * F2FS_GETTABLE_FS_FL. To also make it settable via FS_IOC_SETFLAGS, also add
2006 * its FS_*_FL equivalent to F2FS_SETTABLE_FS_FL.
2007 *
2008 * Translating flags to fsx_flags value used by FS_IOC_FSGETXATTR and
2009 * FS_IOC_FSSETXATTR is done by the VFS.
2010 */
2011
2012 static const struct {
2013 u32 iflag;
2014 u32 fsflag;
2015 } f2fs_fsflags_map[] = {
2016 { F2FS_COMPR_FL, FS_COMPR_FL },
2017 { F2FS_SYNC_FL, FS_SYNC_FL },
2018 { F2FS_IMMUTABLE_FL, FS_IMMUTABLE_FL },
2019 { F2FS_APPEND_FL, FS_APPEND_FL },
2020 { F2FS_NODUMP_FL, FS_NODUMP_FL },
2021 { F2FS_NOATIME_FL, FS_NOATIME_FL },
2022 { F2FS_NOCOMP_FL, FS_NOCOMP_FL },
2023 { F2FS_INDEX_FL, FS_INDEX_FL },
2024 { F2FS_DIRSYNC_FL, FS_DIRSYNC_FL },
2025 { F2FS_PROJINHERIT_FL, FS_PROJINHERIT_FL },
2026 { F2FS_CASEFOLD_FL, FS_CASEFOLD_FL },
2027 };
2028
2029 #define F2FS_GETTABLE_FS_FL ( \
2030 FS_COMPR_FL | \
2031 FS_SYNC_FL | \
2032 FS_IMMUTABLE_FL | \
2033 FS_APPEND_FL | \
2034 FS_NODUMP_FL | \
2035 FS_NOATIME_FL | \
2036 FS_NOCOMP_FL | \
2037 FS_INDEX_FL | \
2038 FS_DIRSYNC_FL | \
2039 FS_PROJINHERIT_FL | \
2040 FS_ENCRYPT_FL | \
2041 FS_INLINE_DATA_FL | \
2042 FS_NOCOW_FL | \
2043 FS_VERITY_FL | \
2044 FS_CASEFOLD_FL)
2045
2046 #define F2FS_SETTABLE_FS_FL ( \
2047 FS_COMPR_FL | \
2048 FS_SYNC_FL | \
2049 FS_IMMUTABLE_FL | \
2050 FS_APPEND_FL | \
2051 FS_NODUMP_FL | \
2052 FS_NOATIME_FL | \
2053 FS_NOCOMP_FL | \
2054 FS_DIRSYNC_FL | \
2055 FS_PROJINHERIT_FL | \
2056 FS_CASEFOLD_FL)
2057
2058 /* Convert f2fs on-disk i_flags to FS_IOC_{GET,SET}FLAGS flags */
f2fs_iflags_to_fsflags(u32 iflags)2059 static inline u32 f2fs_iflags_to_fsflags(u32 iflags)
2060 {
2061 u32 fsflags = 0;
2062 int i;
2063
2064 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
2065 if (iflags & f2fs_fsflags_map[i].iflag)
2066 fsflags |= f2fs_fsflags_map[i].fsflag;
2067
2068 return fsflags;
2069 }
2070
2071 /* Convert FS_IOC_{GET,SET}FLAGS flags to f2fs on-disk i_flags */
f2fs_fsflags_to_iflags(u32 fsflags)2072 static inline u32 f2fs_fsflags_to_iflags(u32 fsflags)
2073 {
2074 u32 iflags = 0;
2075 int i;
2076
2077 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
2078 if (fsflags & f2fs_fsflags_map[i].fsflag)
2079 iflags |= f2fs_fsflags_map[i].iflag;
2080
2081 return iflags;
2082 }
2083
f2fs_ioc_getversion(struct file * filp,unsigned long arg)2084 static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
2085 {
2086 struct inode *inode = file_inode(filp);
2087
2088 return put_user(inode->i_generation, (int __user *)arg);
2089 }
2090
f2fs_ioc_start_atomic_write(struct file * filp,bool truncate)2091 static int f2fs_ioc_start_atomic_write(struct file *filp, bool truncate)
2092 {
2093 struct inode *inode = file_inode(filp);
2094 struct mnt_idmap *idmap = file_mnt_idmap(filp);
2095 struct f2fs_inode_info *fi = F2FS_I(inode);
2096 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2097 struct inode *pinode;
2098 loff_t isize;
2099 int ret;
2100
2101 if (!inode_owner_or_capable(idmap, inode))
2102 return -EACCES;
2103
2104 if (!S_ISREG(inode->i_mode))
2105 return -EINVAL;
2106
2107 if (filp->f_flags & O_DIRECT)
2108 return -EINVAL;
2109
2110 ret = mnt_want_write_file(filp);
2111 if (ret)
2112 return ret;
2113
2114 inode_lock(inode);
2115
2116 if (!f2fs_disable_compressed_file(inode)) {
2117 ret = -EINVAL;
2118 goto out;
2119 }
2120
2121 if (f2fs_is_atomic_file(inode))
2122 goto out;
2123
2124 ret = f2fs_convert_inline_inode(inode);
2125 if (ret)
2126 goto out;
2127
2128 f2fs_down_write(&fi->i_gc_rwsem[WRITE]);
2129
2130 /*
2131 * Should wait end_io to count F2FS_WB_CP_DATA correctly by
2132 * f2fs_is_atomic_file.
2133 */
2134 if (get_dirty_pages(inode))
2135 f2fs_warn(sbi, "Unexpected flush for atomic writes: ino=%lu, npages=%u",
2136 inode->i_ino, get_dirty_pages(inode));
2137 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
2138 if (ret) {
2139 f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
2140 goto out;
2141 }
2142
2143 /* Check if the inode already has a COW inode */
2144 if (fi->cow_inode == NULL) {
2145 /* Create a COW inode for atomic write */
2146 pinode = f2fs_iget(inode->i_sb, fi->i_pino);
2147 if (IS_ERR(pinode)) {
2148 f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
2149 ret = PTR_ERR(pinode);
2150 goto out;
2151 }
2152
2153 ret = f2fs_get_tmpfile(idmap, pinode, &fi->cow_inode);
2154 iput(pinode);
2155 if (ret) {
2156 f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
2157 goto out;
2158 }
2159
2160 set_inode_flag(fi->cow_inode, FI_COW_FILE);
2161 clear_inode_flag(fi->cow_inode, FI_INLINE_DATA);
2162
2163 /* Set the COW inode's atomic_inode to the atomic inode */
2164 F2FS_I(fi->cow_inode)->atomic_inode = inode;
2165 } else {
2166 /* Reuse the already created COW inode */
2167 ret = f2fs_do_truncate_blocks(fi->cow_inode, 0, true);
2168 if (ret) {
2169 f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
2170 goto out;
2171 }
2172 }
2173
2174 f2fs_write_inode(inode, NULL);
2175
2176 stat_inc_atomic_inode(inode);
2177
2178 set_inode_flag(inode, FI_ATOMIC_FILE);
2179
2180 isize = i_size_read(inode);
2181 fi->original_i_size = isize;
2182 if (truncate) {
2183 set_inode_flag(inode, FI_ATOMIC_REPLACE);
2184 truncate_inode_pages_final(inode->i_mapping);
2185 f2fs_i_size_write(inode, 0);
2186 isize = 0;
2187 }
2188 f2fs_i_size_write(fi->cow_inode, isize);
2189
2190 f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
2191
2192 f2fs_update_time(sbi, REQ_TIME);
2193 fi->atomic_write_task = current;
2194 stat_update_max_atomic_write(inode);
2195 fi->atomic_write_cnt = 0;
2196 out:
2197 inode_unlock(inode);
2198 mnt_drop_write_file(filp);
2199 return ret;
2200 }
2201
f2fs_ioc_commit_atomic_write(struct file * filp)2202 static int f2fs_ioc_commit_atomic_write(struct file *filp)
2203 {
2204 struct inode *inode = file_inode(filp);
2205 struct mnt_idmap *idmap = file_mnt_idmap(filp);
2206 int ret;
2207
2208 if (!inode_owner_or_capable(idmap, inode))
2209 return -EACCES;
2210
2211 ret = mnt_want_write_file(filp);
2212 if (ret)
2213 return ret;
2214
2215 f2fs_balance_fs(F2FS_I_SB(inode), true);
2216
2217 inode_lock(inode);
2218
2219 if (f2fs_is_atomic_file(inode)) {
2220 ret = f2fs_commit_atomic_write(inode);
2221 if (!ret)
2222 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
2223
2224 f2fs_abort_atomic_write(inode, ret);
2225 } else {
2226 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false);
2227 }
2228
2229 inode_unlock(inode);
2230 mnt_drop_write_file(filp);
2231 return ret;
2232 }
2233
f2fs_ioc_abort_atomic_write(struct file * filp)2234 static int f2fs_ioc_abort_atomic_write(struct file *filp)
2235 {
2236 struct inode *inode = file_inode(filp);
2237 struct mnt_idmap *idmap = file_mnt_idmap(filp);
2238 int ret;
2239
2240 if (!inode_owner_or_capable(idmap, inode))
2241 return -EACCES;
2242
2243 ret = mnt_want_write_file(filp);
2244 if (ret)
2245 return ret;
2246
2247 inode_lock(inode);
2248
2249 f2fs_abort_atomic_write(inode, true);
2250
2251 inode_unlock(inode);
2252
2253 mnt_drop_write_file(filp);
2254 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2255 return ret;
2256 }
2257
f2fs_ioc_shutdown(struct file * filp,unsigned long arg)2258 static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
2259 {
2260 struct inode *inode = file_inode(filp);
2261 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2262 struct super_block *sb = sbi->sb;
2263 __u32 in;
2264 int ret = 0;
2265
2266 if (!capable(CAP_SYS_ADMIN))
2267 return -EPERM;
2268
2269 if (get_user(in, (__u32 __user *)arg))
2270 return -EFAULT;
2271
2272 if (in != F2FS_GOING_DOWN_FULLSYNC) {
2273 ret = mnt_want_write_file(filp);
2274 if (ret) {
2275 if (ret == -EROFS) {
2276 ret = 0;
2277 f2fs_stop_checkpoint(sbi, false,
2278 STOP_CP_REASON_SHUTDOWN);
2279 trace_f2fs_shutdown(sbi, in, ret);
2280 }
2281 return ret;
2282 }
2283 }
2284
2285 switch (in) {
2286 case F2FS_GOING_DOWN_FULLSYNC:
2287 ret = freeze_bdev(sb->s_bdev);
2288 if (ret)
2289 goto out;
2290 f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_SHUTDOWN);
2291 thaw_bdev(sb->s_bdev);
2292 break;
2293 case F2FS_GOING_DOWN_METASYNC:
2294 /* do checkpoint only */
2295 ret = f2fs_sync_fs(sb, 1);
2296 if (ret)
2297 goto out;
2298 f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_SHUTDOWN);
2299 break;
2300 case F2FS_GOING_DOWN_NOSYNC:
2301 f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_SHUTDOWN);
2302 break;
2303 case F2FS_GOING_DOWN_METAFLUSH:
2304 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
2305 f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_SHUTDOWN);
2306 break;
2307 case F2FS_GOING_DOWN_NEED_FSCK:
2308 set_sbi_flag(sbi, SBI_NEED_FSCK);
2309 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
2310 set_sbi_flag(sbi, SBI_IS_DIRTY);
2311 /* do checkpoint only */
2312 ret = f2fs_sync_fs(sb, 1);
2313 goto out;
2314 default:
2315 ret = -EINVAL;
2316 goto out;
2317 }
2318
2319 f2fs_stop_gc_thread(sbi);
2320 f2fs_stop_discard_thread(sbi);
2321
2322 f2fs_drop_discard_cmd(sbi);
2323 clear_opt(sbi, DISCARD);
2324
2325 f2fs_update_time(sbi, REQ_TIME);
2326 out:
2327 if (in != F2FS_GOING_DOWN_FULLSYNC)
2328 mnt_drop_write_file(filp);
2329
2330 trace_f2fs_shutdown(sbi, in, ret);
2331
2332 return ret;
2333 }
2334
f2fs_ioc_fitrim(struct file * filp,unsigned long arg)2335 static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
2336 {
2337 struct inode *inode = file_inode(filp);
2338 struct super_block *sb = inode->i_sb;
2339 struct fstrim_range range;
2340 int ret;
2341
2342 if (!capable(CAP_SYS_ADMIN))
2343 return -EPERM;
2344
2345 if (!f2fs_hw_support_discard(F2FS_SB(sb)))
2346 return -EOPNOTSUPP;
2347
2348 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
2349 sizeof(range)))
2350 return -EFAULT;
2351
2352 ret = mnt_want_write_file(filp);
2353 if (ret)
2354 return ret;
2355
2356 range.minlen = max((unsigned int)range.minlen,
2357 bdev_discard_granularity(sb->s_bdev));
2358 ret = f2fs_trim_fs(F2FS_SB(sb), &range);
2359 mnt_drop_write_file(filp);
2360 if (ret < 0)
2361 return ret;
2362
2363 if (copy_to_user((struct fstrim_range __user *)arg, &range,
2364 sizeof(range)))
2365 return -EFAULT;
2366 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2367 return 0;
2368 }
2369
uuid_is_nonzero(__u8 u[16])2370 static bool uuid_is_nonzero(__u8 u[16])
2371 {
2372 int i;
2373
2374 for (i = 0; i < 16; i++)
2375 if (u[i])
2376 return true;
2377 return false;
2378 }
2379
f2fs_ioc_set_encryption_policy(struct file * filp,unsigned long arg)2380 static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
2381 {
2382 struct inode *inode = file_inode(filp);
2383
2384 if (!f2fs_sb_has_encrypt(F2FS_I_SB(inode)))
2385 return -EOPNOTSUPP;
2386
2387 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2388
2389 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
2390 }
2391
f2fs_ioc_get_encryption_policy(struct file * filp,unsigned long arg)2392 static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
2393 {
2394 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2395 return -EOPNOTSUPP;
2396 return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
2397 }
2398
f2fs_ioc_get_encryption_pwsalt(struct file * filp,unsigned long arg)2399 static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
2400 {
2401 struct inode *inode = file_inode(filp);
2402 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2403 u8 encrypt_pw_salt[16];
2404 int err;
2405
2406 if (!f2fs_sb_has_encrypt(sbi))
2407 return -EOPNOTSUPP;
2408
2409 err = mnt_want_write_file(filp);
2410 if (err)
2411 return err;
2412
2413 f2fs_down_write(&sbi->sb_lock);
2414
2415 if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
2416 goto got_it;
2417
2418 /* update superblock with uuid */
2419 generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
2420
2421 err = f2fs_commit_super(sbi, false);
2422 if (err) {
2423 /* undo new data */
2424 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
2425 goto out_err;
2426 }
2427 got_it:
2428 memcpy(encrypt_pw_salt, sbi->raw_super->encrypt_pw_salt, 16);
2429 out_err:
2430 f2fs_up_write(&sbi->sb_lock);
2431 mnt_drop_write_file(filp);
2432
2433 if (!err && copy_to_user((__u8 __user *)arg, encrypt_pw_salt, 16))
2434 err = -EFAULT;
2435
2436 return err;
2437 }
2438
f2fs_ioc_get_encryption_policy_ex(struct file * filp,unsigned long arg)2439 static int f2fs_ioc_get_encryption_policy_ex(struct file *filp,
2440 unsigned long arg)
2441 {
2442 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2443 return -EOPNOTSUPP;
2444
2445 return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg);
2446 }
2447
f2fs_ioc_add_encryption_key(struct file * filp,unsigned long arg)2448 static int f2fs_ioc_add_encryption_key(struct file *filp, unsigned long arg)
2449 {
2450 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2451 return -EOPNOTSUPP;
2452
2453 return fscrypt_ioctl_add_key(filp, (void __user *)arg);
2454 }
2455
f2fs_ioc_remove_encryption_key(struct file * filp,unsigned long arg)2456 static int f2fs_ioc_remove_encryption_key(struct file *filp, unsigned long arg)
2457 {
2458 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2459 return -EOPNOTSUPP;
2460
2461 return fscrypt_ioctl_remove_key(filp, (void __user *)arg);
2462 }
2463
f2fs_ioc_remove_encryption_key_all_users(struct file * filp,unsigned long arg)2464 static int f2fs_ioc_remove_encryption_key_all_users(struct file *filp,
2465 unsigned long arg)
2466 {
2467 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2468 return -EOPNOTSUPP;
2469
2470 return fscrypt_ioctl_remove_key_all_users(filp, (void __user *)arg);
2471 }
2472
f2fs_ioc_get_encryption_key_status(struct file * filp,unsigned long arg)2473 static int f2fs_ioc_get_encryption_key_status(struct file *filp,
2474 unsigned long arg)
2475 {
2476 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2477 return -EOPNOTSUPP;
2478
2479 return fscrypt_ioctl_get_key_status(filp, (void __user *)arg);
2480 }
2481
f2fs_ioc_get_encryption_nonce(struct file * filp,unsigned long arg)2482 static int f2fs_ioc_get_encryption_nonce(struct file *filp, unsigned long arg)
2483 {
2484 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2485 return -EOPNOTSUPP;
2486
2487 return fscrypt_ioctl_get_nonce(filp, (void __user *)arg);
2488 }
2489
f2fs_ioc_gc(struct file * filp,unsigned long arg)2490 static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
2491 {
2492 struct inode *inode = file_inode(filp);
2493 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2494 struct f2fs_gc_control gc_control = { .victim_segno = NULL_SEGNO,
2495 .no_bg_gc = false,
2496 .should_migrate_blocks = false,
2497 .nr_free_secs = 0 };
2498 __u32 sync;
2499 int ret;
2500
2501 if (!capable(CAP_SYS_ADMIN))
2502 return -EPERM;
2503
2504 if (get_user(sync, (__u32 __user *)arg))
2505 return -EFAULT;
2506
2507 if (f2fs_readonly(sbi->sb))
2508 return -EROFS;
2509
2510 ret = mnt_want_write_file(filp);
2511 if (ret)
2512 return ret;
2513
2514 if (!sync) {
2515 if (!f2fs_down_write_trylock(&sbi->gc_lock)) {
2516 ret = -EBUSY;
2517 goto out;
2518 }
2519 } else {
2520 f2fs_down_write(&sbi->gc_lock);
2521 }
2522
2523 gc_control.init_gc_type = sync ? FG_GC : BG_GC;
2524 gc_control.err_gc_skipped = sync;
2525 stat_inc_gc_call_count(sbi, FOREGROUND);
2526 ret = f2fs_gc(sbi, &gc_control);
2527 out:
2528 mnt_drop_write_file(filp);
2529 return ret;
2530 }
2531
__f2fs_ioc_gc_range(struct file * filp,struct f2fs_gc_range * range)2532 static int __f2fs_ioc_gc_range(struct file *filp, struct f2fs_gc_range *range)
2533 {
2534 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
2535 struct f2fs_gc_control gc_control = {
2536 .init_gc_type = range->sync ? FG_GC : BG_GC,
2537 .no_bg_gc = false,
2538 .should_migrate_blocks = false,
2539 .err_gc_skipped = range->sync,
2540 .nr_free_secs = 0 };
2541 u64 end;
2542 int ret;
2543
2544 if (!capable(CAP_SYS_ADMIN))
2545 return -EPERM;
2546 if (f2fs_readonly(sbi->sb))
2547 return -EROFS;
2548
2549 end = range->start + range->len;
2550 if (end < range->start || range->start < MAIN_BLKADDR(sbi) ||
2551 end >= MAX_BLKADDR(sbi))
2552 return -EINVAL;
2553
2554 ret = mnt_want_write_file(filp);
2555 if (ret)
2556 return ret;
2557
2558 do_more:
2559 if (!range->sync) {
2560 if (!f2fs_down_write_trylock(&sbi->gc_lock)) {
2561 ret = -EBUSY;
2562 goto out;
2563 }
2564 } else {
2565 f2fs_down_write(&sbi->gc_lock);
2566 }
2567
2568 gc_control.victim_segno = GET_SEGNO(sbi, range->start);
2569 stat_inc_gc_call_count(sbi, FOREGROUND);
2570 ret = f2fs_gc(sbi, &gc_control);
2571 if (ret) {
2572 if (ret == -EBUSY)
2573 ret = -EAGAIN;
2574 goto out;
2575 }
2576 range->start += CAP_BLKS_PER_SEC(sbi);
2577 if (range->start <= end)
2578 goto do_more;
2579 out:
2580 mnt_drop_write_file(filp);
2581 return ret;
2582 }
2583
f2fs_ioc_gc_range(struct file * filp,unsigned long arg)2584 static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
2585 {
2586 struct f2fs_gc_range range;
2587
2588 if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
2589 sizeof(range)))
2590 return -EFAULT;
2591 return __f2fs_ioc_gc_range(filp, &range);
2592 }
2593
f2fs_ioc_write_checkpoint(struct file * filp)2594 static int f2fs_ioc_write_checkpoint(struct file *filp)
2595 {
2596 struct inode *inode = file_inode(filp);
2597 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2598 int ret;
2599
2600 if (!capable(CAP_SYS_ADMIN))
2601 return -EPERM;
2602
2603 if (f2fs_readonly(sbi->sb))
2604 return -EROFS;
2605
2606 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
2607 f2fs_info(sbi, "Skipping Checkpoint. Checkpoints currently disabled.");
2608 return -EINVAL;
2609 }
2610
2611 ret = mnt_want_write_file(filp);
2612 if (ret)
2613 return ret;
2614
2615 ret = f2fs_sync_fs(sbi->sb, 1);
2616
2617 mnt_drop_write_file(filp);
2618 return ret;
2619 }
2620
f2fs_defragment_range(struct f2fs_sb_info * sbi,struct file * filp,struct f2fs_defragment * range)2621 static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
2622 struct file *filp,
2623 struct f2fs_defragment *range)
2624 {
2625 struct inode *inode = file_inode(filp);
2626 struct f2fs_map_blocks map = { .m_next_extent = NULL,
2627 .m_seg_type = NO_CHECK_TYPE,
2628 .m_may_create = false };
2629 struct extent_info ei = {};
2630 pgoff_t pg_start, pg_end, next_pgofs;
2631 unsigned int total = 0, sec_num;
2632 block_t blk_end = 0;
2633 bool fragmented = false;
2634 int err;
2635
2636 pg_start = range->start >> PAGE_SHIFT;
2637 pg_end = (range->start + range->len) >> PAGE_SHIFT;
2638
2639 f2fs_balance_fs(sbi, true);
2640
2641 inode_lock(inode);
2642
2643 if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) {
2644 err = -EINVAL;
2645 goto unlock_out;
2646 }
2647
2648 /* if in-place-update policy is enabled, don't waste time here */
2649 set_inode_flag(inode, FI_OPU_WRITE);
2650 if (f2fs_should_update_inplace(inode, NULL)) {
2651 err = -EINVAL;
2652 goto out;
2653 }
2654
2655 /* writeback all dirty pages in the range */
2656 err = filemap_write_and_wait_range(inode->i_mapping, range->start,
2657 range->start + range->len - 1);
2658 if (err)
2659 goto out;
2660
2661 /*
2662 * lookup mapping info in extent cache, skip defragmenting if physical
2663 * block addresses are continuous.
2664 */
2665 if (f2fs_lookup_read_extent_cache(inode, pg_start, &ei)) {
2666 if (ei.fofs + ei.len >= pg_end)
2667 goto out;
2668 }
2669
2670 map.m_lblk = pg_start;
2671 map.m_next_pgofs = &next_pgofs;
2672
2673 /*
2674 * lookup mapping info in dnode page cache, skip defragmenting if all
2675 * physical block addresses are continuous even if there are hole(s)
2676 * in logical blocks.
2677 */
2678 while (map.m_lblk < pg_end) {
2679 map.m_len = pg_end - map.m_lblk;
2680 err = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_DEFAULT);
2681 if (err)
2682 goto out;
2683
2684 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
2685 map.m_lblk = next_pgofs;
2686 continue;
2687 }
2688
2689 if (blk_end && blk_end != map.m_pblk)
2690 fragmented = true;
2691
2692 /* record total count of block that we're going to move */
2693 total += map.m_len;
2694
2695 blk_end = map.m_pblk + map.m_len;
2696
2697 map.m_lblk += map.m_len;
2698 }
2699
2700 if (!fragmented) {
2701 total = 0;
2702 goto out;
2703 }
2704
2705 sec_num = DIV_ROUND_UP(total, CAP_BLKS_PER_SEC(sbi));
2706
2707 /*
2708 * make sure there are enough free section for LFS allocation, this can
2709 * avoid defragment running in SSR mode when free section are allocated
2710 * intensively
2711 */
2712 if (has_not_enough_free_secs(sbi, 0, sec_num)) {
2713 err = -EAGAIN;
2714 goto out;
2715 }
2716
2717 map.m_lblk = pg_start;
2718 map.m_len = pg_end - pg_start;
2719 total = 0;
2720
2721 while (map.m_lblk < pg_end) {
2722 pgoff_t idx;
2723 int cnt = 0;
2724
2725 do_map:
2726 map.m_len = pg_end - map.m_lblk;
2727 err = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_DEFAULT);
2728 if (err)
2729 goto clear_out;
2730
2731 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
2732 map.m_lblk = next_pgofs;
2733 goto check;
2734 }
2735
2736 set_inode_flag(inode, FI_SKIP_WRITES);
2737
2738 idx = map.m_lblk;
2739 while (idx < map.m_lblk + map.m_len &&
2740 cnt < BLKS_PER_SEG(sbi)) {
2741 struct page *page;
2742
2743 page = f2fs_get_lock_data_page(inode, idx, true);
2744 if (IS_ERR(page)) {
2745 err = PTR_ERR(page);
2746 goto clear_out;
2747 }
2748
2749 set_page_dirty(page);
2750 set_page_private_gcing(page);
2751 f2fs_put_page(page, 1);
2752
2753 idx++;
2754 cnt++;
2755 total++;
2756 }
2757
2758 map.m_lblk = idx;
2759 check:
2760 if (map.m_lblk < pg_end && cnt < BLKS_PER_SEG(sbi))
2761 goto do_map;
2762
2763 clear_inode_flag(inode, FI_SKIP_WRITES);
2764
2765 err = filemap_fdatawrite(inode->i_mapping);
2766 if (err)
2767 goto out;
2768 }
2769 clear_out:
2770 clear_inode_flag(inode, FI_SKIP_WRITES);
2771 out:
2772 clear_inode_flag(inode, FI_OPU_WRITE);
2773 unlock_out:
2774 inode_unlock(inode);
2775 if (!err)
2776 range->len = (u64)total << PAGE_SHIFT;
2777 return err;
2778 }
2779
f2fs_ioc_defragment(struct file * filp,unsigned long arg)2780 static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
2781 {
2782 struct inode *inode = file_inode(filp);
2783 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2784 struct f2fs_defragment range;
2785 int err;
2786
2787 if (!capable(CAP_SYS_ADMIN))
2788 return -EPERM;
2789
2790 if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode))
2791 return -EINVAL;
2792
2793 if (f2fs_readonly(sbi->sb))
2794 return -EROFS;
2795
2796 if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
2797 sizeof(range)))
2798 return -EFAULT;
2799
2800 /* verify alignment of offset & size */
2801 if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1))
2802 return -EINVAL;
2803
2804 if (unlikely((range.start + range.len) >> PAGE_SHIFT >
2805 max_file_blocks(inode)))
2806 return -EINVAL;
2807
2808 err = mnt_want_write_file(filp);
2809 if (err)
2810 return err;
2811
2812 err = f2fs_defragment_range(sbi, filp, &range);
2813 mnt_drop_write_file(filp);
2814
2815 f2fs_update_time(sbi, REQ_TIME);
2816 if (err < 0)
2817 return err;
2818
2819 if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
2820 sizeof(range)))
2821 return -EFAULT;
2822
2823 return 0;
2824 }
2825
f2fs_move_file_range(struct file * file_in,loff_t pos_in,struct file * file_out,loff_t pos_out,size_t len)2826 static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
2827 struct file *file_out, loff_t pos_out, size_t len)
2828 {
2829 struct inode *src = file_inode(file_in);
2830 struct inode *dst = file_inode(file_out);
2831 struct f2fs_sb_info *sbi = F2FS_I_SB(src);
2832 size_t olen = len, dst_max_i_size = 0;
2833 size_t dst_osize;
2834 int ret;
2835
2836 if (file_in->f_path.mnt != file_out->f_path.mnt ||
2837 src->i_sb != dst->i_sb)
2838 return -EXDEV;
2839
2840 if (unlikely(f2fs_readonly(src->i_sb)))
2841 return -EROFS;
2842
2843 if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
2844 return -EINVAL;
2845
2846 if (IS_ENCRYPTED(src) || IS_ENCRYPTED(dst))
2847 return -EOPNOTSUPP;
2848
2849 if (pos_out < 0 || pos_in < 0)
2850 return -EINVAL;
2851
2852 if (src == dst) {
2853 if (pos_in == pos_out)
2854 return 0;
2855 if (pos_out > pos_in && pos_out < pos_in + len)
2856 return -EINVAL;
2857 }
2858
2859 inode_lock(src);
2860 if (src != dst) {
2861 ret = -EBUSY;
2862 if (!inode_trylock(dst))
2863 goto out;
2864 }
2865
2866 if (f2fs_compressed_file(src) || f2fs_compressed_file(dst) ||
2867 f2fs_is_pinned_file(src) || f2fs_is_pinned_file(dst)) {
2868 ret = -EOPNOTSUPP;
2869 goto out_unlock;
2870 }
2871
2872 ret = -EINVAL;
2873 if (pos_in + len > src->i_size || pos_in + len < pos_in)
2874 goto out_unlock;
2875 if (len == 0)
2876 olen = len = src->i_size - pos_in;
2877 if (pos_in + len == src->i_size)
2878 len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in;
2879 if (len == 0) {
2880 ret = 0;
2881 goto out_unlock;
2882 }
2883
2884 dst_osize = dst->i_size;
2885 if (pos_out + olen > dst->i_size)
2886 dst_max_i_size = pos_out + olen;
2887
2888 /* verify the end result is block aligned */
2889 if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) ||
2890 !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) ||
2891 !IS_ALIGNED(pos_out, F2FS_BLKSIZE))
2892 goto out_unlock;
2893
2894 ret = f2fs_convert_inline_inode(src);
2895 if (ret)
2896 goto out_unlock;
2897
2898 ret = f2fs_convert_inline_inode(dst);
2899 if (ret)
2900 goto out_unlock;
2901
2902 /* write out all dirty pages from offset */
2903 ret = filemap_write_and_wait_range(src->i_mapping,
2904 pos_in, pos_in + len);
2905 if (ret)
2906 goto out_unlock;
2907
2908 ret = filemap_write_and_wait_range(dst->i_mapping,
2909 pos_out, pos_out + len);
2910 if (ret)
2911 goto out_unlock;
2912
2913 f2fs_balance_fs(sbi, true);
2914
2915 f2fs_down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2916 if (src != dst) {
2917 ret = -EBUSY;
2918 if (!f2fs_down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE]))
2919 goto out_src;
2920 }
2921
2922 f2fs_lock_op(sbi);
2923 ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
2924 pos_out >> F2FS_BLKSIZE_BITS,
2925 len >> F2FS_BLKSIZE_BITS, false);
2926
2927 if (!ret) {
2928 if (dst_max_i_size)
2929 f2fs_i_size_write(dst, dst_max_i_size);
2930 else if (dst_osize != dst->i_size)
2931 f2fs_i_size_write(dst, dst_osize);
2932 }
2933 f2fs_unlock_op(sbi);
2934
2935 if (src != dst)
2936 f2fs_up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]);
2937 out_src:
2938 f2fs_up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2939 if (ret)
2940 goto out_unlock;
2941
2942 src->i_mtime = inode_set_ctime_current(src);
2943 f2fs_mark_inode_dirty_sync(src, false);
2944 if (src != dst) {
2945 dst->i_mtime = inode_set_ctime_current(dst);
2946 f2fs_mark_inode_dirty_sync(dst, false);
2947 }
2948 f2fs_update_time(sbi, REQ_TIME);
2949
2950 out_unlock:
2951 if (src != dst)
2952 inode_unlock(dst);
2953 out:
2954 inode_unlock(src);
2955 return ret;
2956 }
2957
__f2fs_ioc_move_range(struct file * filp,struct f2fs_move_range * range)2958 static int __f2fs_ioc_move_range(struct file *filp,
2959 struct f2fs_move_range *range)
2960 {
2961 struct fd dst;
2962 int err;
2963
2964 if (!(filp->f_mode & FMODE_READ) ||
2965 !(filp->f_mode & FMODE_WRITE))
2966 return -EBADF;
2967
2968 dst = fdget(range->dst_fd);
2969 if (!dst.file)
2970 return -EBADF;
2971
2972 if (!(dst.file->f_mode & FMODE_WRITE)) {
2973 err = -EBADF;
2974 goto err_out;
2975 }
2976
2977 err = mnt_want_write_file(filp);
2978 if (err)
2979 goto err_out;
2980
2981 err = f2fs_move_file_range(filp, range->pos_in, dst.file,
2982 range->pos_out, range->len);
2983
2984 mnt_drop_write_file(filp);
2985 err_out:
2986 fdput(dst);
2987 return err;
2988 }
2989
f2fs_ioc_move_range(struct file * filp,unsigned long arg)2990 static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
2991 {
2992 struct f2fs_move_range range;
2993
2994 if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
2995 sizeof(range)))
2996 return -EFAULT;
2997 return __f2fs_ioc_move_range(filp, &range);
2998 }
2999
f2fs_ioc_flush_device(struct file * filp,unsigned long arg)3000 static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
3001 {
3002 struct inode *inode = file_inode(filp);
3003 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3004 struct sit_info *sm = SIT_I(sbi);
3005 unsigned int start_segno = 0, end_segno = 0;
3006 unsigned int dev_start_segno = 0, dev_end_segno = 0;
3007 struct f2fs_flush_device range;
3008 struct f2fs_gc_control gc_control = {
3009 .init_gc_type = FG_GC,
3010 .should_migrate_blocks = true,
3011 .err_gc_skipped = true,
3012 .nr_free_secs = 0 };
3013 int ret;
3014
3015 if (!capable(CAP_SYS_ADMIN))
3016 return -EPERM;
3017
3018 if (f2fs_readonly(sbi->sb))
3019 return -EROFS;
3020
3021 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
3022 return -EINVAL;
3023
3024 if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg,
3025 sizeof(range)))
3026 return -EFAULT;
3027
3028 if (!f2fs_is_multi_device(sbi) || sbi->s_ndevs - 1 <= range.dev_num ||
3029 __is_large_section(sbi)) {
3030 f2fs_warn(sbi, "Can't flush %u in %d for SEGS_PER_SEC %u != 1",
3031 range.dev_num, sbi->s_ndevs, SEGS_PER_SEC(sbi));
3032 return -EINVAL;
3033 }
3034
3035 ret = mnt_want_write_file(filp);
3036 if (ret)
3037 return ret;
3038
3039 if (range.dev_num != 0)
3040 dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk);
3041 dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk);
3042
3043 start_segno = sm->last_victim[FLUSH_DEVICE];
3044 if (start_segno < dev_start_segno || start_segno >= dev_end_segno)
3045 start_segno = dev_start_segno;
3046 end_segno = min(start_segno + range.segments, dev_end_segno);
3047
3048 while (start_segno < end_segno) {
3049 if (!f2fs_down_write_trylock(&sbi->gc_lock)) {
3050 ret = -EBUSY;
3051 goto out;
3052 }
3053 sm->last_victim[GC_CB] = end_segno + 1;
3054 sm->last_victim[GC_GREEDY] = end_segno + 1;
3055 sm->last_victim[ALLOC_NEXT] = end_segno + 1;
3056
3057 gc_control.victim_segno = start_segno;
3058 stat_inc_gc_call_count(sbi, FOREGROUND);
3059 ret = f2fs_gc(sbi, &gc_control);
3060 if (ret == -EAGAIN)
3061 ret = 0;
3062 else if (ret < 0)
3063 break;
3064 start_segno++;
3065 }
3066 out:
3067 mnt_drop_write_file(filp);
3068 return ret;
3069 }
3070
f2fs_ioc_get_features(struct file * filp,unsigned long arg)3071 static int f2fs_ioc_get_features(struct file *filp, unsigned long arg)
3072 {
3073 struct inode *inode = file_inode(filp);
3074 u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature);
3075
3076 /* Must validate to set it with SQLite behavior in Android. */
3077 sb_feature |= F2FS_FEATURE_ATOMIC_WRITE;
3078
3079 return put_user(sb_feature, (u32 __user *)arg);
3080 }
3081
3082 #ifdef CONFIG_QUOTA
f2fs_transfer_project_quota(struct inode * inode,kprojid_t kprojid)3083 int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
3084 {
3085 struct dquot *transfer_to[MAXQUOTAS] = {};
3086 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3087 struct super_block *sb = sbi->sb;
3088 int err;
3089
3090 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
3091 if (IS_ERR(transfer_to[PRJQUOTA]))
3092 return PTR_ERR(transfer_to[PRJQUOTA]);
3093
3094 err = __dquot_transfer(inode, transfer_to);
3095 if (err)
3096 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
3097 dqput(transfer_to[PRJQUOTA]);
3098 return err;
3099 }
3100
f2fs_ioc_setproject(struct inode * inode,__u32 projid)3101 static int f2fs_ioc_setproject(struct inode *inode, __u32 projid)
3102 {
3103 struct f2fs_inode_info *fi = F2FS_I(inode);
3104 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3105 struct f2fs_inode *ri = NULL;
3106 kprojid_t kprojid;
3107 int err;
3108
3109 if (!f2fs_sb_has_project_quota(sbi)) {
3110 if (projid != F2FS_DEF_PROJID)
3111 return -EOPNOTSUPP;
3112 else
3113 return 0;
3114 }
3115
3116 if (!f2fs_has_extra_attr(inode))
3117 return -EOPNOTSUPP;
3118
3119 kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
3120
3121 if (projid_eq(kprojid, fi->i_projid))
3122 return 0;
3123
3124 err = -EPERM;
3125 /* Is it quota file? Do not allow user to mess with it */
3126 if (IS_NOQUOTA(inode))
3127 return err;
3128
3129 if (!F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
3130 return -EOVERFLOW;
3131
3132 err = f2fs_dquot_initialize(inode);
3133 if (err)
3134 return err;
3135
3136 f2fs_lock_op(sbi);
3137 err = f2fs_transfer_project_quota(inode, kprojid);
3138 if (err)
3139 goto out_unlock;
3140
3141 fi->i_projid = kprojid;
3142 inode_set_ctime_current(inode);
3143 f2fs_mark_inode_dirty_sync(inode, true);
3144 out_unlock:
3145 f2fs_unlock_op(sbi);
3146 return err;
3147 }
3148 #else
f2fs_transfer_project_quota(struct inode * inode,kprojid_t kprojid)3149 int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
3150 {
3151 return 0;
3152 }
3153
f2fs_ioc_setproject(struct inode * inode,__u32 projid)3154 static int f2fs_ioc_setproject(struct inode *inode, __u32 projid)
3155 {
3156 if (projid != F2FS_DEF_PROJID)
3157 return -EOPNOTSUPP;
3158 return 0;
3159 }
3160 #endif
3161
f2fs_fileattr_get(struct dentry * dentry,struct fileattr * fa)3162 int f2fs_fileattr_get(struct dentry *dentry, struct fileattr *fa)
3163 {
3164 struct inode *inode = d_inode(dentry);
3165 struct f2fs_inode_info *fi = F2FS_I(inode);
3166 u32 fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
3167
3168 if (IS_ENCRYPTED(inode))
3169 fsflags |= FS_ENCRYPT_FL;
3170 if (IS_VERITY(inode))
3171 fsflags |= FS_VERITY_FL;
3172 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))
3173 fsflags |= FS_INLINE_DATA_FL;
3174 if (is_inode_flag_set(inode, FI_PIN_FILE))
3175 fsflags |= FS_NOCOW_FL;
3176
3177 fileattr_fill_flags(fa, fsflags & F2FS_GETTABLE_FS_FL);
3178
3179 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)))
3180 fa->fsx_projid = from_kprojid(&init_user_ns, fi->i_projid);
3181
3182 return 0;
3183 }
3184
f2fs_fileattr_set(struct mnt_idmap * idmap,struct dentry * dentry,struct fileattr * fa)3185 int f2fs_fileattr_set(struct mnt_idmap *idmap,
3186 struct dentry *dentry, struct fileattr *fa)
3187 {
3188 struct inode *inode = d_inode(dentry);
3189 u32 fsflags = fa->flags, mask = F2FS_SETTABLE_FS_FL;
3190 u32 iflags;
3191 int err;
3192
3193 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
3194 return -EIO;
3195 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode)))
3196 return -ENOSPC;
3197 if (fsflags & ~F2FS_GETTABLE_FS_FL)
3198 return -EOPNOTSUPP;
3199 fsflags &= F2FS_SETTABLE_FS_FL;
3200 if (!fa->flags_valid)
3201 mask &= FS_COMMON_FL;
3202
3203 iflags = f2fs_fsflags_to_iflags(fsflags);
3204 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
3205 return -EOPNOTSUPP;
3206
3207 err = f2fs_setflags_common(inode, iflags, f2fs_fsflags_to_iflags(mask));
3208 if (!err)
3209 err = f2fs_ioc_setproject(inode, fa->fsx_projid);
3210
3211 return err;
3212 }
3213
f2fs_pin_file_control(struct inode * inode,bool inc)3214 int f2fs_pin_file_control(struct inode *inode, bool inc)
3215 {
3216 struct f2fs_inode_info *fi = F2FS_I(inode);
3217 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3218
3219 /* Use i_gc_failures for normal file as a risk signal. */
3220 if (inc)
3221 f2fs_i_gc_failures_write(inode,
3222 fi->i_gc_failures[GC_FAILURE_PIN] + 1);
3223
3224 if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) {
3225 f2fs_warn(sbi, "%s: Enable GC = ino %lx after %x GC trials",
3226 __func__, inode->i_ino,
3227 fi->i_gc_failures[GC_FAILURE_PIN]);
3228 clear_inode_flag(inode, FI_PIN_FILE);
3229 return -EAGAIN;
3230 }
3231 return 0;
3232 }
3233
f2fs_ioc_set_pin_file(struct file * filp,unsigned long arg)3234 static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
3235 {
3236 struct inode *inode = file_inode(filp);
3237 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3238 __u32 pin;
3239 int ret = 0;
3240
3241 if (get_user(pin, (__u32 __user *)arg))
3242 return -EFAULT;
3243
3244 if (!S_ISREG(inode->i_mode))
3245 return -EINVAL;
3246
3247 if (f2fs_readonly(sbi->sb))
3248 return -EROFS;
3249
3250 ret = mnt_want_write_file(filp);
3251 if (ret)
3252 return ret;
3253
3254 inode_lock(inode);
3255
3256 if (!pin) {
3257 clear_inode_flag(inode, FI_PIN_FILE);
3258 f2fs_i_gc_failures_write(inode, 0);
3259 goto done;
3260 } else if (f2fs_is_pinned_file(inode)) {
3261 goto done;
3262 }
3263
3264 if (f2fs_sb_has_blkzoned(sbi) && F2FS_HAS_BLOCKS(inode)) {
3265 ret = -EFBIG;
3266 goto out;
3267 }
3268
3269 /* Let's allow file pinning on zoned device. */
3270 if (!f2fs_sb_has_blkzoned(sbi) &&
3271 f2fs_should_update_outplace(inode, NULL)) {
3272 ret = -EINVAL;
3273 goto out;
3274 }
3275
3276 if (f2fs_pin_file_control(inode, false)) {
3277 ret = -EAGAIN;
3278 goto out;
3279 }
3280
3281 ret = f2fs_convert_inline_inode(inode);
3282 if (ret)
3283 goto out;
3284
3285 if (!f2fs_disable_compressed_file(inode)) {
3286 ret = -EOPNOTSUPP;
3287 goto out;
3288 }
3289
3290 set_inode_flag(inode, FI_PIN_FILE);
3291 ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
3292 done:
3293 f2fs_update_time(sbi, REQ_TIME);
3294 out:
3295 inode_unlock(inode);
3296 mnt_drop_write_file(filp);
3297 return ret;
3298 }
3299
f2fs_ioc_get_pin_file(struct file * filp,unsigned long arg)3300 static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg)
3301 {
3302 struct inode *inode = file_inode(filp);
3303 __u32 pin = 0;
3304
3305 if (is_inode_flag_set(inode, FI_PIN_FILE))
3306 pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
3307 return put_user(pin, (u32 __user *)arg);
3308 }
3309
f2fs_precache_extents(struct inode * inode)3310 int f2fs_precache_extents(struct inode *inode)
3311 {
3312 struct f2fs_inode_info *fi = F2FS_I(inode);
3313 struct f2fs_map_blocks map;
3314 pgoff_t m_next_extent;
3315 loff_t end;
3316 int err;
3317
3318 if (is_inode_flag_set(inode, FI_NO_EXTENT))
3319 return -EOPNOTSUPP;
3320
3321 map.m_lblk = 0;
3322 map.m_pblk = 0;
3323 map.m_next_pgofs = NULL;
3324 map.m_next_extent = &m_next_extent;
3325 map.m_seg_type = NO_CHECK_TYPE;
3326 map.m_may_create = false;
3327 end = max_file_blocks(inode);
3328
3329 while (map.m_lblk < end) {
3330 map.m_len = end - map.m_lblk;
3331
3332 f2fs_down_write(&fi->i_gc_rwsem[WRITE]);
3333 err = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_PRECACHE);
3334 f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
3335 if (err)
3336 return err;
3337
3338 map.m_lblk = m_next_extent;
3339 }
3340
3341 return 0;
3342 }
3343
f2fs_ioc_precache_extents(struct file * filp)3344 static int f2fs_ioc_precache_extents(struct file *filp)
3345 {
3346 return f2fs_precache_extents(file_inode(filp));
3347 }
3348
f2fs_ioc_resize_fs(struct file * filp,unsigned long arg)3349 static int f2fs_ioc_resize_fs(struct file *filp, unsigned long arg)
3350 {
3351 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
3352 __u64 block_count;
3353
3354 if (!capable(CAP_SYS_ADMIN))
3355 return -EPERM;
3356
3357 if (f2fs_readonly(sbi->sb))
3358 return -EROFS;
3359
3360 if (copy_from_user(&block_count, (void __user *)arg,
3361 sizeof(block_count)))
3362 return -EFAULT;
3363
3364 return f2fs_resize_fs(filp, block_count);
3365 }
3366
f2fs_ioc_enable_verity(struct file * filp,unsigned long arg)3367 static int f2fs_ioc_enable_verity(struct file *filp, unsigned long arg)
3368 {
3369 struct inode *inode = file_inode(filp);
3370
3371 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3372
3373 if (!f2fs_sb_has_verity(F2FS_I_SB(inode))) {
3374 f2fs_warn(F2FS_I_SB(inode),
3375 "Can't enable fs-verity on inode %lu: the verity feature is not enabled on this filesystem",
3376 inode->i_ino);
3377 return -EOPNOTSUPP;
3378 }
3379
3380 return fsverity_ioctl_enable(filp, (const void __user *)arg);
3381 }
3382
f2fs_ioc_measure_verity(struct file * filp,unsigned long arg)3383 static int f2fs_ioc_measure_verity(struct file *filp, unsigned long arg)
3384 {
3385 if (!f2fs_sb_has_verity(F2FS_I_SB(file_inode(filp))))
3386 return -EOPNOTSUPP;
3387
3388 return fsverity_ioctl_measure(filp, (void __user *)arg);
3389 }
3390
f2fs_ioc_read_verity_metadata(struct file * filp,unsigned long arg)3391 static int f2fs_ioc_read_verity_metadata(struct file *filp, unsigned long arg)
3392 {
3393 if (!f2fs_sb_has_verity(F2FS_I_SB(file_inode(filp))))
3394 return -EOPNOTSUPP;
3395
3396 return fsverity_ioctl_read_metadata(filp, (const void __user *)arg);
3397 }
3398
f2fs_ioc_getfslabel(struct file * filp,unsigned long arg)3399 static int f2fs_ioc_getfslabel(struct file *filp, unsigned long arg)
3400 {
3401 struct inode *inode = file_inode(filp);
3402 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3403 char *vbuf;
3404 int count;
3405 int err = 0;
3406
3407 vbuf = f2fs_kzalloc(sbi, MAX_VOLUME_NAME, GFP_KERNEL);
3408 if (!vbuf)
3409 return -ENOMEM;
3410
3411 f2fs_down_read(&sbi->sb_lock);
3412 count = utf16s_to_utf8s(sbi->raw_super->volume_name,
3413 ARRAY_SIZE(sbi->raw_super->volume_name),
3414 UTF16_LITTLE_ENDIAN, vbuf, MAX_VOLUME_NAME);
3415 f2fs_up_read(&sbi->sb_lock);
3416
3417 if (copy_to_user((char __user *)arg, vbuf,
3418 min(FSLABEL_MAX, count)))
3419 err = -EFAULT;
3420
3421 kfree(vbuf);
3422 return err;
3423 }
3424
f2fs_ioc_setfslabel(struct file * filp,unsigned long arg)3425 static int f2fs_ioc_setfslabel(struct file *filp, unsigned long arg)
3426 {
3427 struct inode *inode = file_inode(filp);
3428 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3429 char *vbuf;
3430 int err = 0;
3431
3432 if (!capable(CAP_SYS_ADMIN))
3433 return -EPERM;
3434
3435 vbuf = strndup_user((const char __user *)arg, FSLABEL_MAX);
3436 if (IS_ERR(vbuf))
3437 return PTR_ERR(vbuf);
3438
3439 err = mnt_want_write_file(filp);
3440 if (err)
3441 goto out;
3442
3443 f2fs_down_write(&sbi->sb_lock);
3444
3445 memset(sbi->raw_super->volume_name, 0,
3446 sizeof(sbi->raw_super->volume_name));
3447 utf8s_to_utf16s(vbuf, strlen(vbuf), UTF16_LITTLE_ENDIAN,
3448 sbi->raw_super->volume_name,
3449 ARRAY_SIZE(sbi->raw_super->volume_name));
3450
3451 err = f2fs_commit_super(sbi, false);
3452
3453 f2fs_up_write(&sbi->sb_lock);
3454
3455 mnt_drop_write_file(filp);
3456 out:
3457 kfree(vbuf);
3458 return err;
3459 }
3460
f2fs_get_compress_blocks(struct inode * inode,__u64 * blocks)3461 static int f2fs_get_compress_blocks(struct inode *inode, __u64 *blocks)
3462 {
3463 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3464 return -EOPNOTSUPP;
3465
3466 if (!f2fs_compressed_file(inode))
3467 return -EINVAL;
3468
3469 *blocks = atomic_read(&F2FS_I(inode)->i_compr_blocks);
3470
3471 return 0;
3472 }
3473
f2fs_ioc_get_compress_blocks(struct file * filp,unsigned long arg)3474 static int f2fs_ioc_get_compress_blocks(struct file *filp, unsigned long arg)
3475 {
3476 struct inode *inode = file_inode(filp);
3477 __u64 blocks;
3478 int ret;
3479
3480 ret = f2fs_get_compress_blocks(inode, &blocks);
3481 if (ret < 0)
3482 return ret;
3483
3484 return put_user(blocks, (u64 __user *)arg);
3485 }
3486
release_compress_blocks(struct dnode_of_data * dn,pgoff_t count)3487 static int release_compress_blocks(struct dnode_of_data *dn, pgoff_t count)
3488 {
3489 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
3490 unsigned int released_blocks = 0;
3491 int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
3492 block_t blkaddr;
3493 int i;
3494
3495 for (i = 0; i < count; i++) {
3496 blkaddr = data_blkaddr(dn->inode, dn->node_page,
3497 dn->ofs_in_node + i);
3498
3499 if (!__is_valid_data_blkaddr(blkaddr))
3500 continue;
3501 if (unlikely(!f2fs_is_valid_blkaddr(sbi, blkaddr,
3502 DATA_GENERIC_ENHANCE))) {
3503 f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
3504 return -EFSCORRUPTED;
3505 }
3506 }
3507
3508 while (count) {
3509 int compr_blocks = 0;
3510
3511 for (i = 0; i < cluster_size; i++, dn->ofs_in_node++) {
3512 blkaddr = f2fs_data_blkaddr(dn);
3513
3514 if (i == 0) {
3515 if (blkaddr == COMPRESS_ADDR)
3516 continue;
3517 dn->ofs_in_node += cluster_size;
3518 goto next;
3519 }
3520
3521 if (__is_valid_data_blkaddr(blkaddr))
3522 compr_blocks++;
3523
3524 if (blkaddr != NEW_ADDR)
3525 continue;
3526
3527 f2fs_set_data_blkaddr(dn, NULL_ADDR);
3528 }
3529
3530 f2fs_i_compr_blocks_update(dn->inode, compr_blocks, false);
3531 dec_valid_block_count(sbi, dn->inode,
3532 cluster_size - compr_blocks);
3533
3534 released_blocks += cluster_size - compr_blocks;
3535 next:
3536 count -= cluster_size;
3537 }
3538
3539 return released_blocks;
3540 }
3541
f2fs_release_compress_blocks(struct file * filp,unsigned long arg)3542 static int f2fs_release_compress_blocks(struct file *filp, unsigned long arg)
3543 {
3544 struct inode *inode = file_inode(filp);
3545 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3546 pgoff_t page_idx = 0, last_idx;
3547 unsigned int released_blocks = 0;
3548 int ret;
3549 int writecount;
3550
3551 if (!f2fs_sb_has_compression(sbi))
3552 return -EOPNOTSUPP;
3553
3554 if (f2fs_readonly(sbi->sb))
3555 return -EROFS;
3556
3557 ret = mnt_want_write_file(filp);
3558 if (ret)
3559 return ret;
3560
3561 f2fs_balance_fs(sbi, true);
3562
3563 inode_lock(inode);
3564
3565 writecount = atomic_read(&inode->i_writecount);
3566 if ((filp->f_mode & FMODE_WRITE && writecount != 1) ||
3567 (!(filp->f_mode & FMODE_WRITE) && writecount)) {
3568 ret = -EBUSY;
3569 goto out;
3570 }
3571
3572 if (!f2fs_compressed_file(inode) ||
3573 is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) {
3574 ret = -EINVAL;
3575 goto out;
3576 }
3577
3578 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
3579 if (ret)
3580 goto out;
3581
3582 if (!atomic_read(&F2FS_I(inode)->i_compr_blocks)) {
3583 ret = -EPERM;
3584 goto out;
3585 }
3586
3587 set_inode_flag(inode, FI_COMPRESS_RELEASED);
3588 inode_set_ctime_current(inode);
3589 f2fs_mark_inode_dirty_sync(inode, true);
3590
3591 f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3592 filemap_invalidate_lock(inode->i_mapping);
3593
3594 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
3595
3596 while (page_idx < last_idx) {
3597 struct dnode_of_data dn;
3598 pgoff_t end_offset, count;
3599
3600 f2fs_lock_op(sbi);
3601
3602 set_new_dnode(&dn, inode, NULL, NULL, 0);
3603 ret = f2fs_get_dnode_of_data(&dn, page_idx, LOOKUP_NODE);
3604 if (ret) {
3605 f2fs_unlock_op(sbi);
3606 if (ret == -ENOENT) {
3607 page_idx = f2fs_get_next_page_offset(&dn,
3608 page_idx);
3609 ret = 0;
3610 continue;
3611 }
3612 break;
3613 }
3614
3615 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3616 count = min(end_offset - dn.ofs_in_node, last_idx - page_idx);
3617 count = round_up(count, F2FS_I(inode)->i_cluster_size);
3618
3619 ret = release_compress_blocks(&dn, count);
3620
3621 f2fs_put_dnode(&dn);
3622
3623 f2fs_unlock_op(sbi);
3624
3625 if (ret < 0)
3626 break;
3627
3628 page_idx += count;
3629 released_blocks += ret;
3630 }
3631
3632 filemap_invalidate_unlock(inode->i_mapping);
3633 f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3634 out:
3635 inode_unlock(inode);
3636
3637 mnt_drop_write_file(filp);
3638
3639 if (ret >= 0) {
3640 ret = put_user(released_blocks, (u64 __user *)arg);
3641 } else if (released_blocks &&
3642 atomic_read(&F2FS_I(inode)->i_compr_blocks)) {
3643 set_sbi_flag(sbi, SBI_NEED_FSCK);
3644 f2fs_warn(sbi, "%s: partial blocks were released i_ino=%lx "
3645 "iblocks=%llu, released=%u, compr_blocks=%u, "
3646 "run fsck to fix.",
3647 __func__, inode->i_ino, inode->i_blocks,
3648 released_blocks,
3649 atomic_read(&F2FS_I(inode)->i_compr_blocks));
3650 }
3651
3652 return ret;
3653 }
3654
reserve_compress_blocks(struct dnode_of_data * dn,pgoff_t count,unsigned int * reserved_blocks)3655 static int reserve_compress_blocks(struct dnode_of_data *dn, pgoff_t count,
3656 unsigned int *reserved_blocks)
3657 {
3658 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
3659 int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
3660 block_t blkaddr;
3661 int i;
3662
3663 for (i = 0; i < count; i++) {
3664 blkaddr = data_blkaddr(dn->inode, dn->node_page,
3665 dn->ofs_in_node + i);
3666
3667 if (!__is_valid_data_blkaddr(blkaddr))
3668 continue;
3669 if (unlikely(!f2fs_is_valid_blkaddr(sbi, blkaddr,
3670 DATA_GENERIC_ENHANCE))) {
3671 f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
3672 return -EFSCORRUPTED;
3673 }
3674 }
3675
3676 while (count) {
3677 int compr_blocks = 0;
3678 blkcnt_t reserved = 0;
3679 blkcnt_t to_reserved;
3680 int ret;
3681
3682 for (i = 0; i < cluster_size; i++) {
3683 blkaddr = data_blkaddr(dn->inode, dn->node_page,
3684 dn->ofs_in_node + i);
3685
3686 if (i == 0) {
3687 if (blkaddr != COMPRESS_ADDR) {
3688 dn->ofs_in_node += cluster_size;
3689 goto next;
3690 }
3691 continue;
3692 }
3693
3694 /*
3695 * compressed cluster was not released due to it
3696 * fails in release_compress_blocks(), so NEW_ADDR
3697 * is a possible case.
3698 */
3699 if (blkaddr == NEW_ADDR) {
3700 reserved++;
3701 continue;
3702 }
3703 if (__is_valid_data_blkaddr(blkaddr)) {
3704 compr_blocks++;
3705 continue;
3706 }
3707 }
3708
3709 to_reserved = cluster_size - compr_blocks - reserved;
3710
3711 /* for the case all blocks in cluster were reserved */
3712 if (to_reserved == 1) {
3713 dn->ofs_in_node += cluster_size;
3714 goto next;
3715 }
3716
3717 ret = inc_valid_block_count(sbi, dn->inode,
3718 &to_reserved, false);
3719 if (unlikely(ret))
3720 return ret;
3721
3722 for (i = 0; i < cluster_size; i++, dn->ofs_in_node++) {
3723 if (f2fs_data_blkaddr(dn) == NULL_ADDR)
3724 f2fs_set_data_blkaddr(dn, NEW_ADDR);
3725 }
3726
3727 f2fs_i_compr_blocks_update(dn->inode, compr_blocks, true);
3728
3729 *reserved_blocks += to_reserved;
3730 next:
3731 count -= cluster_size;
3732 }
3733
3734 return 0;
3735 }
3736
f2fs_reserve_compress_blocks(struct file * filp,unsigned long arg)3737 static int f2fs_reserve_compress_blocks(struct file *filp, unsigned long arg)
3738 {
3739 struct inode *inode = file_inode(filp);
3740 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3741 pgoff_t page_idx = 0, last_idx;
3742 unsigned int reserved_blocks = 0;
3743 int ret;
3744
3745 if (!f2fs_sb_has_compression(sbi))
3746 return -EOPNOTSUPP;
3747
3748 if (f2fs_readonly(sbi->sb))
3749 return -EROFS;
3750
3751 ret = mnt_want_write_file(filp);
3752 if (ret)
3753 return ret;
3754
3755 f2fs_balance_fs(sbi, true);
3756
3757 inode_lock(inode);
3758
3759 if (!f2fs_compressed_file(inode) ||
3760 !is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) {
3761 ret = -EINVAL;
3762 goto unlock_inode;
3763 }
3764
3765 if (atomic_read(&F2FS_I(inode)->i_compr_blocks))
3766 goto unlock_inode;
3767
3768 f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3769 filemap_invalidate_lock(inode->i_mapping);
3770
3771 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
3772
3773 while (page_idx < last_idx) {
3774 struct dnode_of_data dn;
3775 pgoff_t end_offset, count;
3776
3777 f2fs_lock_op(sbi);
3778
3779 set_new_dnode(&dn, inode, NULL, NULL, 0);
3780 ret = f2fs_get_dnode_of_data(&dn, page_idx, LOOKUP_NODE);
3781 if (ret) {
3782 f2fs_unlock_op(sbi);
3783 if (ret == -ENOENT) {
3784 page_idx = f2fs_get_next_page_offset(&dn,
3785 page_idx);
3786 ret = 0;
3787 continue;
3788 }
3789 break;
3790 }
3791
3792 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3793 count = min(end_offset - dn.ofs_in_node, last_idx - page_idx);
3794 count = round_up(count, F2FS_I(inode)->i_cluster_size);
3795
3796 ret = reserve_compress_blocks(&dn, count, &reserved_blocks);
3797
3798 f2fs_put_dnode(&dn);
3799
3800 f2fs_unlock_op(sbi);
3801
3802 if (ret < 0)
3803 break;
3804
3805 page_idx += count;
3806 }
3807
3808 filemap_invalidate_unlock(inode->i_mapping);
3809 f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3810
3811 if (!ret) {
3812 clear_inode_flag(inode, FI_COMPRESS_RELEASED);
3813 inode_set_ctime_current(inode);
3814 f2fs_mark_inode_dirty_sync(inode, true);
3815 }
3816 unlock_inode:
3817 inode_unlock(inode);
3818 mnt_drop_write_file(filp);
3819
3820 if (!ret) {
3821 ret = put_user(reserved_blocks, (u64 __user *)arg);
3822 } else if (reserved_blocks &&
3823 atomic_read(&F2FS_I(inode)->i_compr_blocks)) {
3824 set_sbi_flag(sbi, SBI_NEED_FSCK);
3825 f2fs_warn(sbi, "%s: partial blocks were released i_ino=%lx "
3826 "iblocks=%llu, reserved=%u, compr_blocks=%u, "
3827 "run fsck to fix.",
3828 __func__, inode->i_ino, inode->i_blocks,
3829 reserved_blocks,
3830 atomic_read(&F2FS_I(inode)->i_compr_blocks));
3831 }
3832
3833 return ret;
3834 }
3835
f2fs_secure_erase(struct block_device * bdev,struct inode * inode,pgoff_t off,block_t block,block_t len,u32 flags)3836 static int f2fs_secure_erase(struct block_device *bdev, struct inode *inode,
3837 pgoff_t off, block_t block, block_t len, u32 flags)
3838 {
3839 sector_t sector = SECTOR_FROM_BLOCK(block);
3840 sector_t nr_sects = SECTOR_FROM_BLOCK(len);
3841 int ret = 0;
3842
3843 if (flags & F2FS_TRIM_FILE_DISCARD) {
3844 if (bdev_max_secure_erase_sectors(bdev))
3845 ret = blkdev_issue_secure_erase(bdev, sector, nr_sects,
3846 GFP_NOFS);
3847 else
3848 ret = blkdev_issue_discard(bdev, sector, nr_sects,
3849 GFP_NOFS);
3850 }
3851
3852 if (!ret && (flags & F2FS_TRIM_FILE_ZEROOUT)) {
3853 if (IS_ENCRYPTED(inode))
3854 ret = fscrypt_zeroout_range(inode, off, block, len);
3855 else
3856 ret = blkdev_issue_zeroout(bdev, sector, nr_sects,
3857 GFP_NOFS, 0);
3858 }
3859
3860 return ret;
3861 }
3862
f2fs_sec_trim_file(struct file * filp,unsigned long arg)3863 static int f2fs_sec_trim_file(struct file *filp, unsigned long arg)
3864 {
3865 struct inode *inode = file_inode(filp);
3866 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3867 struct address_space *mapping = inode->i_mapping;
3868 struct block_device *prev_bdev = NULL;
3869 struct f2fs_sectrim_range range;
3870 pgoff_t index, pg_end, prev_index = 0;
3871 block_t prev_block = 0, len = 0;
3872 loff_t end_addr;
3873 bool to_end = false;
3874 int ret = 0;
3875
3876 if (!(filp->f_mode & FMODE_WRITE))
3877 return -EBADF;
3878
3879 if (copy_from_user(&range, (struct f2fs_sectrim_range __user *)arg,
3880 sizeof(range)))
3881 return -EFAULT;
3882
3883 if (range.flags == 0 || (range.flags & ~F2FS_TRIM_FILE_MASK) ||
3884 !S_ISREG(inode->i_mode))
3885 return -EINVAL;
3886
3887 if (((range.flags & F2FS_TRIM_FILE_DISCARD) &&
3888 !f2fs_hw_support_discard(sbi)) ||
3889 ((range.flags & F2FS_TRIM_FILE_ZEROOUT) &&
3890 IS_ENCRYPTED(inode) && f2fs_is_multi_device(sbi)))
3891 return -EOPNOTSUPP;
3892
3893 file_start_write(filp);
3894 inode_lock(inode);
3895
3896 if (f2fs_is_atomic_file(inode) || f2fs_compressed_file(inode) ||
3897 range.start >= inode->i_size) {
3898 ret = -EINVAL;
3899 goto err;
3900 }
3901
3902 if (range.len == 0)
3903 goto err;
3904
3905 if (inode->i_size - range.start > range.len) {
3906 end_addr = range.start + range.len;
3907 } else {
3908 end_addr = range.len == (u64)-1 ?
3909 sbi->sb->s_maxbytes : inode->i_size;
3910 to_end = true;
3911 }
3912
3913 if (!IS_ALIGNED(range.start, F2FS_BLKSIZE) ||
3914 (!to_end && !IS_ALIGNED(end_addr, F2FS_BLKSIZE))) {
3915 ret = -EINVAL;
3916 goto err;
3917 }
3918
3919 index = F2FS_BYTES_TO_BLK(range.start);
3920 pg_end = DIV_ROUND_UP(end_addr, F2FS_BLKSIZE);
3921
3922 ret = f2fs_convert_inline_inode(inode);
3923 if (ret)
3924 goto err;
3925
3926 f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3927 filemap_invalidate_lock(mapping);
3928
3929 ret = filemap_write_and_wait_range(mapping, range.start,
3930 to_end ? LLONG_MAX : end_addr - 1);
3931 if (ret)
3932 goto out;
3933
3934 truncate_inode_pages_range(mapping, range.start,
3935 to_end ? -1 : end_addr - 1);
3936
3937 while (index < pg_end) {
3938 struct dnode_of_data dn;
3939 pgoff_t end_offset, count;
3940 int i;
3941
3942 set_new_dnode(&dn, inode, NULL, NULL, 0);
3943 ret = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE);
3944 if (ret) {
3945 if (ret == -ENOENT) {
3946 index = f2fs_get_next_page_offset(&dn, index);
3947 continue;
3948 }
3949 goto out;
3950 }
3951
3952 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3953 count = min(end_offset - dn.ofs_in_node, pg_end - index);
3954 for (i = 0; i < count; i++, index++, dn.ofs_in_node++) {
3955 struct block_device *cur_bdev;
3956 block_t blkaddr = f2fs_data_blkaddr(&dn);
3957
3958 if (!__is_valid_data_blkaddr(blkaddr))
3959 continue;
3960
3961 if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
3962 DATA_GENERIC_ENHANCE)) {
3963 ret = -EFSCORRUPTED;
3964 f2fs_put_dnode(&dn);
3965 f2fs_handle_error(sbi,
3966 ERROR_INVALID_BLKADDR);
3967 goto out;
3968 }
3969
3970 cur_bdev = f2fs_target_device(sbi, blkaddr, NULL);
3971 if (f2fs_is_multi_device(sbi)) {
3972 int di = f2fs_target_device_index(sbi, blkaddr);
3973
3974 blkaddr -= FDEV(di).start_blk;
3975 }
3976
3977 if (len) {
3978 if (prev_bdev == cur_bdev &&
3979 index == prev_index + len &&
3980 blkaddr == prev_block + len) {
3981 len++;
3982 } else {
3983 ret = f2fs_secure_erase(prev_bdev,
3984 inode, prev_index, prev_block,
3985 len, range.flags);
3986 if (ret) {
3987 f2fs_put_dnode(&dn);
3988 goto out;
3989 }
3990
3991 len = 0;
3992 }
3993 }
3994
3995 if (!len) {
3996 prev_bdev = cur_bdev;
3997 prev_index = index;
3998 prev_block = blkaddr;
3999 len = 1;
4000 }
4001 }
4002
4003 f2fs_put_dnode(&dn);
4004
4005 if (fatal_signal_pending(current)) {
4006 ret = -EINTR;
4007 goto out;
4008 }
4009 cond_resched();
4010 }
4011
4012 if (len)
4013 ret = f2fs_secure_erase(prev_bdev, inode, prev_index,
4014 prev_block, len, range.flags);
4015 out:
4016 filemap_invalidate_unlock(mapping);
4017 f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
4018 err:
4019 inode_unlock(inode);
4020 file_end_write(filp);
4021
4022 return ret;
4023 }
4024
f2fs_ioc_get_compress_option(struct file * filp,unsigned long arg)4025 static int f2fs_ioc_get_compress_option(struct file *filp, unsigned long arg)
4026 {
4027 struct inode *inode = file_inode(filp);
4028 struct f2fs_comp_option option;
4029
4030 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
4031 return -EOPNOTSUPP;
4032
4033 inode_lock_shared(inode);
4034
4035 if (!f2fs_compressed_file(inode)) {
4036 inode_unlock_shared(inode);
4037 return -ENODATA;
4038 }
4039
4040 option.algorithm = F2FS_I(inode)->i_compress_algorithm;
4041 option.log_cluster_size = F2FS_I(inode)->i_log_cluster_size;
4042
4043 inode_unlock_shared(inode);
4044
4045 if (copy_to_user((struct f2fs_comp_option __user *)arg, &option,
4046 sizeof(option)))
4047 return -EFAULT;
4048
4049 return 0;
4050 }
4051
f2fs_ioc_set_compress_option(struct file * filp,unsigned long arg)4052 static int f2fs_ioc_set_compress_option(struct file *filp, unsigned long arg)
4053 {
4054 struct inode *inode = file_inode(filp);
4055 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4056 struct f2fs_comp_option option;
4057 int ret = 0;
4058
4059 if (!f2fs_sb_has_compression(sbi))
4060 return -EOPNOTSUPP;
4061
4062 if (!(filp->f_mode & FMODE_WRITE))
4063 return -EBADF;
4064
4065 if (copy_from_user(&option, (struct f2fs_comp_option __user *)arg,
4066 sizeof(option)))
4067 return -EFAULT;
4068
4069 if (option.log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
4070 option.log_cluster_size > MAX_COMPRESS_LOG_SIZE ||
4071 option.algorithm >= COMPRESS_MAX)
4072 return -EINVAL;
4073
4074 file_start_write(filp);
4075 inode_lock(inode);
4076
4077 f2fs_down_write(&F2FS_I(inode)->i_sem);
4078 if (!f2fs_compressed_file(inode)) {
4079 ret = -EINVAL;
4080 goto out;
4081 }
4082
4083 if (f2fs_is_mmap_file(inode) || get_dirty_pages(inode)) {
4084 ret = -EBUSY;
4085 goto out;
4086 }
4087
4088 if (F2FS_HAS_BLOCKS(inode)) {
4089 ret = -EFBIG;
4090 goto out;
4091 }
4092
4093 F2FS_I(inode)->i_compress_algorithm = option.algorithm;
4094 F2FS_I(inode)->i_log_cluster_size = option.log_cluster_size;
4095 F2FS_I(inode)->i_cluster_size = BIT(option.log_cluster_size);
4096 /* Set default level */
4097 if (F2FS_I(inode)->i_compress_algorithm == COMPRESS_ZSTD)
4098 F2FS_I(inode)->i_compress_level = F2FS_ZSTD_DEFAULT_CLEVEL;
4099 else
4100 F2FS_I(inode)->i_compress_level = 0;
4101 /* Adjust mount option level */
4102 if (option.algorithm == F2FS_OPTION(sbi).compress_algorithm &&
4103 F2FS_OPTION(sbi).compress_level)
4104 F2FS_I(inode)->i_compress_level = F2FS_OPTION(sbi).compress_level;
4105 f2fs_mark_inode_dirty_sync(inode, true);
4106
4107 if (!f2fs_is_compress_backend_ready(inode))
4108 f2fs_warn(sbi, "compression algorithm is successfully set, "
4109 "but current kernel doesn't support this algorithm.");
4110 out:
4111 f2fs_up_write(&F2FS_I(inode)->i_sem);
4112 inode_unlock(inode);
4113 file_end_write(filp);
4114
4115 return ret;
4116 }
4117
redirty_blocks(struct inode * inode,pgoff_t page_idx,int len)4118 static int redirty_blocks(struct inode *inode, pgoff_t page_idx, int len)
4119 {
4120 DEFINE_READAHEAD(ractl, NULL, NULL, inode->i_mapping, page_idx);
4121 struct address_space *mapping = inode->i_mapping;
4122 struct page *page;
4123 pgoff_t redirty_idx = page_idx;
4124 int i, page_len = 0, ret = 0;
4125
4126 page_cache_ra_unbounded(&ractl, len, 0);
4127
4128 for (i = 0; i < len; i++, page_idx++) {
4129 page = read_cache_page(mapping, page_idx, NULL, NULL);
4130 if (IS_ERR(page)) {
4131 ret = PTR_ERR(page);
4132 break;
4133 }
4134 page_len++;
4135 }
4136
4137 for (i = 0; i < page_len; i++, redirty_idx++) {
4138 page = find_lock_page(mapping, redirty_idx);
4139
4140 /* It will never fail, when page has pinned above */
4141 f2fs_bug_on(F2FS_I_SB(inode), !page);
4142
4143 set_page_dirty(page);
4144 set_page_private_gcing(page);
4145 f2fs_put_page(page, 1);
4146 f2fs_put_page(page, 0);
4147 }
4148
4149 return ret;
4150 }
4151
f2fs_ioc_decompress_file(struct file * filp)4152 static int f2fs_ioc_decompress_file(struct file *filp)
4153 {
4154 struct inode *inode = file_inode(filp);
4155 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4156 struct f2fs_inode_info *fi = F2FS_I(inode);
4157 pgoff_t page_idx = 0, last_idx;
4158 int cluster_size = fi->i_cluster_size;
4159 int count, ret;
4160
4161 if (!f2fs_sb_has_compression(sbi) ||
4162 F2FS_OPTION(sbi).compress_mode != COMPR_MODE_USER)
4163 return -EOPNOTSUPP;
4164
4165 if (!(filp->f_mode & FMODE_WRITE))
4166 return -EBADF;
4167
4168 f2fs_balance_fs(sbi, true);
4169
4170 file_start_write(filp);
4171 inode_lock(inode);
4172
4173 if (!f2fs_is_compress_backend_ready(inode)) {
4174 ret = -EOPNOTSUPP;
4175 goto out;
4176 }
4177
4178 if (!f2fs_compressed_file(inode) ||
4179 is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) {
4180 ret = -EINVAL;
4181 goto out;
4182 }
4183
4184 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
4185 if (ret)
4186 goto out;
4187
4188 if (!atomic_read(&fi->i_compr_blocks))
4189 goto out;
4190
4191 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
4192
4193 count = last_idx - page_idx;
4194 while (count && count >= cluster_size) {
4195 ret = redirty_blocks(inode, page_idx, cluster_size);
4196 if (ret < 0)
4197 break;
4198
4199 if (get_dirty_pages(inode) >= BLKS_PER_SEG(sbi)) {
4200 ret = filemap_fdatawrite(inode->i_mapping);
4201 if (ret < 0)
4202 break;
4203 }
4204
4205 count -= cluster_size;
4206 page_idx += cluster_size;
4207
4208 cond_resched();
4209 if (fatal_signal_pending(current)) {
4210 ret = -EINTR;
4211 break;
4212 }
4213 }
4214
4215 if (!ret)
4216 ret = filemap_write_and_wait_range(inode->i_mapping, 0,
4217 LLONG_MAX);
4218
4219 if (ret)
4220 f2fs_warn(sbi, "%s: The file might be partially decompressed (errno=%d). Please delete the file.",
4221 __func__, ret);
4222 out:
4223 inode_unlock(inode);
4224 file_end_write(filp);
4225
4226 return ret;
4227 }
4228
f2fs_ioc_compress_file(struct file * filp)4229 static int f2fs_ioc_compress_file(struct file *filp)
4230 {
4231 struct inode *inode = file_inode(filp);
4232 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4233 pgoff_t page_idx = 0, last_idx;
4234 int cluster_size = F2FS_I(inode)->i_cluster_size;
4235 int count, ret;
4236
4237 if (!f2fs_sb_has_compression(sbi) ||
4238 F2FS_OPTION(sbi).compress_mode != COMPR_MODE_USER)
4239 return -EOPNOTSUPP;
4240
4241 if (!(filp->f_mode & FMODE_WRITE))
4242 return -EBADF;
4243
4244 f2fs_balance_fs(sbi, true);
4245
4246 file_start_write(filp);
4247 inode_lock(inode);
4248
4249 if (!f2fs_is_compress_backend_ready(inode)) {
4250 ret = -EOPNOTSUPP;
4251 goto out;
4252 }
4253
4254 if (!f2fs_compressed_file(inode) ||
4255 is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) {
4256 ret = -EINVAL;
4257 goto out;
4258 }
4259
4260 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
4261 if (ret)
4262 goto out;
4263
4264 set_inode_flag(inode, FI_ENABLE_COMPRESS);
4265
4266 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
4267
4268 count = last_idx - page_idx;
4269 while (count && count >= cluster_size) {
4270 ret = redirty_blocks(inode, page_idx, cluster_size);
4271 if (ret < 0)
4272 break;
4273
4274 if (get_dirty_pages(inode) >= BLKS_PER_SEG(sbi)) {
4275 ret = filemap_fdatawrite(inode->i_mapping);
4276 if (ret < 0)
4277 break;
4278 }
4279
4280 count -= cluster_size;
4281 page_idx += cluster_size;
4282
4283 cond_resched();
4284 if (fatal_signal_pending(current)) {
4285 ret = -EINTR;
4286 break;
4287 }
4288 }
4289
4290 if (!ret)
4291 ret = filemap_write_and_wait_range(inode->i_mapping, 0,
4292 LLONG_MAX);
4293
4294 clear_inode_flag(inode, FI_ENABLE_COMPRESS);
4295
4296 if (ret)
4297 f2fs_warn(sbi, "%s: The file might be partially compressed (errno=%d). Please delete the file.",
4298 __func__, ret);
4299 out:
4300 inode_unlock(inode);
4301 file_end_write(filp);
4302
4303 return ret;
4304 }
4305
__f2fs_ioctl(struct file * filp,unsigned int cmd,unsigned long arg)4306 static long __f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
4307 {
4308 switch (cmd) {
4309 case FS_IOC_GETVERSION:
4310 return f2fs_ioc_getversion(filp, arg);
4311 case F2FS_IOC_START_ATOMIC_WRITE:
4312 return f2fs_ioc_start_atomic_write(filp, false);
4313 case F2FS_IOC_START_ATOMIC_REPLACE:
4314 return f2fs_ioc_start_atomic_write(filp, true);
4315 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
4316 return f2fs_ioc_commit_atomic_write(filp);
4317 case F2FS_IOC_ABORT_ATOMIC_WRITE:
4318 return f2fs_ioc_abort_atomic_write(filp);
4319 case F2FS_IOC_START_VOLATILE_WRITE:
4320 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
4321 return -EOPNOTSUPP;
4322 case F2FS_IOC_SHUTDOWN:
4323 return f2fs_ioc_shutdown(filp, arg);
4324 case FITRIM:
4325 return f2fs_ioc_fitrim(filp, arg);
4326 case FS_IOC_SET_ENCRYPTION_POLICY:
4327 return f2fs_ioc_set_encryption_policy(filp, arg);
4328 case FS_IOC_GET_ENCRYPTION_POLICY:
4329 return f2fs_ioc_get_encryption_policy(filp, arg);
4330 case FS_IOC_GET_ENCRYPTION_PWSALT:
4331 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
4332 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
4333 return f2fs_ioc_get_encryption_policy_ex(filp, arg);
4334 case FS_IOC_ADD_ENCRYPTION_KEY:
4335 return f2fs_ioc_add_encryption_key(filp, arg);
4336 case FS_IOC_REMOVE_ENCRYPTION_KEY:
4337 return f2fs_ioc_remove_encryption_key(filp, arg);
4338 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
4339 return f2fs_ioc_remove_encryption_key_all_users(filp, arg);
4340 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
4341 return f2fs_ioc_get_encryption_key_status(filp, arg);
4342 case FS_IOC_GET_ENCRYPTION_NONCE:
4343 return f2fs_ioc_get_encryption_nonce(filp, arg);
4344 case F2FS_IOC_GARBAGE_COLLECT:
4345 return f2fs_ioc_gc(filp, arg);
4346 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
4347 return f2fs_ioc_gc_range(filp, arg);
4348 case F2FS_IOC_WRITE_CHECKPOINT:
4349 return f2fs_ioc_write_checkpoint(filp);
4350 case F2FS_IOC_DEFRAGMENT:
4351 return f2fs_ioc_defragment(filp, arg);
4352 case F2FS_IOC_MOVE_RANGE:
4353 return f2fs_ioc_move_range(filp, arg);
4354 case F2FS_IOC_FLUSH_DEVICE:
4355 return f2fs_ioc_flush_device(filp, arg);
4356 case F2FS_IOC_GET_FEATURES:
4357 return f2fs_ioc_get_features(filp, arg);
4358 case F2FS_IOC_GET_PIN_FILE:
4359 return f2fs_ioc_get_pin_file(filp, arg);
4360 case F2FS_IOC_SET_PIN_FILE:
4361 return f2fs_ioc_set_pin_file(filp, arg);
4362 case F2FS_IOC_PRECACHE_EXTENTS:
4363 return f2fs_ioc_precache_extents(filp);
4364 case F2FS_IOC_RESIZE_FS:
4365 return f2fs_ioc_resize_fs(filp, arg);
4366 case FS_IOC_ENABLE_VERITY:
4367 return f2fs_ioc_enable_verity(filp, arg);
4368 case FS_IOC_MEASURE_VERITY:
4369 return f2fs_ioc_measure_verity(filp, arg);
4370 case FS_IOC_READ_VERITY_METADATA:
4371 return f2fs_ioc_read_verity_metadata(filp, arg);
4372 case FS_IOC_GETFSLABEL:
4373 return f2fs_ioc_getfslabel(filp, arg);
4374 case FS_IOC_SETFSLABEL:
4375 return f2fs_ioc_setfslabel(filp, arg);
4376 case F2FS_IOC_GET_COMPRESS_BLOCKS:
4377 return f2fs_ioc_get_compress_blocks(filp, arg);
4378 case F2FS_IOC_RELEASE_COMPRESS_BLOCKS:
4379 return f2fs_release_compress_blocks(filp, arg);
4380 case F2FS_IOC_RESERVE_COMPRESS_BLOCKS:
4381 return f2fs_reserve_compress_blocks(filp, arg);
4382 case F2FS_IOC_SEC_TRIM_FILE:
4383 return f2fs_sec_trim_file(filp, arg);
4384 case F2FS_IOC_GET_COMPRESS_OPTION:
4385 return f2fs_ioc_get_compress_option(filp, arg);
4386 case F2FS_IOC_SET_COMPRESS_OPTION:
4387 return f2fs_ioc_set_compress_option(filp, arg);
4388 case F2FS_IOC_DECOMPRESS_FILE:
4389 return f2fs_ioc_decompress_file(filp);
4390 case F2FS_IOC_COMPRESS_FILE:
4391 return f2fs_ioc_compress_file(filp);
4392 default:
4393 return -ENOTTY;
4394 }
4395 }
4396
f2fs_ioctl(struct file * filp,unsigned int cmd,unsigned long arg)4397 long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
4398 {
4399 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
4400 return -EIO;
4401 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(filp))))
4402 return -ENOSPC;
4403
4404 return __f2fs_ioctl(filp, cmd, arg);
4405 }
4406
4407 /*
4408 * Return %true if the given read or write request should use direct I/O, or
4409 * %false if it should use buffered I/O.
4410 */
f2fs_should_use_dio(struct inode * inode,struct kiocb * iocb,struct iov_iter * iter)4411 static bool f2fs_should_use_dio(struct inode *inode, struct kiocb *iocb,
4412 struct iov_iter *iter)
4413 {
4414 unsigned int align;
4415
4416 if (!(iocb->ki_flags & IOCB_DIRECT))
4417 return false;
4418
4419 if (f2fs_force_buffered_io(inode, iov_iter_rw(iter)))
4420 return false;
4421
4422 /*
4423 * Direct I/O not aligned to the disk's logical_block_size will be
4424 * attempted, but will fail with -EINVAL.
4425 *
4426 * f2fs additionally requires that direct I/O be aligned to the
4427 * filesystem block size, which is often a stricter requirement.
4428 * However, f2fs traditionally falls back to buffered I/O on requests
4429 * that are logical_block_size-aligned but not fs-block aligned.
4430 *
4431 * The below logic implements this behavior.
4432 */
4433 align = iocb->ki_pos | iov_iter_alignment(iter);
4434 if (!IS_ALIGNED(align, i_blocksize(inode)) &&
4435 IS_ALIGNED(align, bdev_logical_block_size(inode->i_sb->s_bdev)))
4436 return false;
4437
4438 return true;
4439 }
4440
f2fs_dio_read_end_io(struct kiocb * iocb,ssize_t size,int error,unsigned int flags)4441 static int f2fs_dio_read_end_io(struct kiocb *iocb, ssize_t size, int error,
4442 unsigned int flags)
4443 {
4444 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(iocb->ki_filp));
4445
4446 dec_page_count(sbi, F2FS_DIO_READ);
4447 if (error)
4448 return error;
4449 f2fs_update_iostat(sbi, NULL, APP_DIRECT_READ_IO, size);
4450 return 0;
4451 }
4452
4453 static const struct iomap_dio_ops f2fs_iomap_dio_read_ops = {
4454 .end_io = f2fs_dio_read_end_io,
4455 };
4456
f2fs_dio_read_iter(struct kiocb * iocb,struct iov_iter * to)4457 static ssize_t f2fs_dio_read_iter(struct kiocb *iocb, struct iov_iter *to)
4458 {
4459 struct file *file = iocb->ki_filp;
4460 struct inode *inode = file_inode(file);
4461 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4462 struct f2fs_inode_info *fi = F2FS_I(inode);
4463 const loff_t pos = iocb->ki_pos;
4464 const size_t count = iov_iter_count(to);
4465 struct iomap_dio *dio;
4466 ssize_t ret;
4467
4468 if (count == 0)
4469 return 0; /* skip atime update */
4470
4471 trace_f2fs_direct_IO_enter(inode, iocb, count, READ);
4472
4473 if (iocb->ki_flags & IOCB_NOWAIT) {
4474 if (!f2fs_down_read_trylock(&fi->i_gc_rwsem[READ])) {
4475 ret = -EAGAIN;
4476 goto out;
4477 }
4478 } else {
4479 f2fs_down_read(&fi->i_gc_rwsem[READ]);
4480 }
4481
4482 /*
4483 * We have to use __iomap_dio_rw() and iomap_dio_complete() instead of
4484 * the higher-level function iomap_dio_rw() in order to ensure that the
4485 * F2FS_DIO_READ counter will be decremented correctly in all cases.
4486 */
4487 inc_page_count(sbi, F2FS_DIO_READ);
4488 dio = __iomap_dio_rw(iocb, to, &f2fs_iomap_ops,
4489 &f2fs_iomap_dio_read_ops, 0, NULL, 0);
4490 if (IS_ERR_OR_NULL(dio)) {
4491 ret = PTR_ERR_OR_ZERO(dio);
4492 if (ret != -EIOCBQUEUED)
4493 dec_page_count(sbi, F2FS_DIO_READ);
4494 } else {
4495 ret = iomap_dio_complete(dio);
4496 }
4497
4498 f2fs_up_read(&fi->i_gc_rwsem[READ]);
4499
4500 file_accessed(file);
4501 out:
4502 trace_f2fs_direct_IO_exit(inode, pos, count, READ, ret);
4503 return ret;
4504 }
4505
f2fs_trace_rw_file_path(struct file * file,loff_t pos,size_t count,int rw)4506 static void f2fs_trace_rw_file_path(struct file *file, loff_t pos, size_t count,
4507 int rw)
4508 {
4509 struct inode *inode = file_inode(file);
4510 char *buf, *path;
4511
4512 buf = f2fs_getname(F2FS_I_SB(inode));
4513 if (!buf)
4514 return;
4515 path = dentry_path_raw(file_dentry(file), buf, PATH_MAX);
4516 if (IS_ERR(path))
4517 goto free_buf;
4518 if (rw == WRITE)
4519 trace_f2fs_datawrite_start(inode, pos, count,
4520 current->pid, path, current->comm);
4521 else
4522 trace_f2fs_dataread_start(inode, pos, count,
4523 current->pid, path, current->comm);
4524 free_buf:
4525 f2fs_putname(buf);
4526 }
4527
f2fs_file_read_iter(struct kiocb * iocb,struct iov_iter * to)4528 static ssize_t f2fs_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
4529 {
4530 struct inode *inode = file_inode(iocb->ki_filp);
4531 const loff_t pos = iocb->ki_pos;
4532 ssize_t ret;
4533
4534 if (!f2fs_is_compress_backend_ready(inode))
4535 return -EOPNOTSUPP;
4536
4537 if (trace_f2fs_dataread_start_enabled())
4538 f2fs_trace_rw_file_path(iocb->ki_filp, iocb->ki_pos,
4539 iov_iter_count(to), READ);
4540
4541 if (f2fs_should_use_dio(inode, iocb, to)) {
4542 ret = f2fs_dio_read_iter(iocb, to);
4543 } else {
4544 ret = filemap_read(iocb, to, 0);
4545 if (ret > 0)
4546 f2fs_update_iostat(F2FS_I_SB(inode), inode,
4547 APP_BUFFERED_READ_IO, ret);
4548 }
4549 if (trace_f2fs_dataread_end_enabled())
4550 trace_f2fs_dataread_end(inode, pos, ret);
4551 return ret;
4552 }
4553
f2fs_file_splice_read(struct file * in,loff_t * ppos,struct pipe_inode_info * pipe,size_t len,unsigned int flags)4554 static ssize_t f2fs_file_splice_read(struct file *in, loff_t *ppos,
4555 struct pipe_inode_info *pipe,
4556 size_t len, unsigned int flags)
4557 {
4558 struct inode *inode = file_inode(in);
4559 const loff_t pos = *ppos;
4560 ssize_t ret;
4561
4562 if (!f2fs_is_compress_backend_ready(inode))
4563 return -EOPNOTSUPP;
4564
4565 if (trace_f2fs_dataread_start_enabled())
4566 f2fs_trace_rw_file_path(in, pos, len, READ);
4567
4568 ret = filemap_splice_read(in, ppos, pipe, len, flags);
4569 if (ret > 0)
4570 f2fs_update_iostat(F2FS_I_SB(inode), inode,
4571 APP_BUFFERED_READ_IO, ret);
4572
4573 if (trace_f2fs_dataread_end_enabled())
4574 trace_f2fs_dataread_end(inode, pos, ret);
4575 return ret;
4576 }
4577
f2fs_write_checks(struct kiocb * iocb,struct iov_iter * from)4578 static ssize_t f2fs_write_checks(struct kiocb *iocb, struct iov_iter *from)
4579 {
4580 struct file *file = iocb->ki_filp;
4581 struct inode *inode = file_inode(file);
4582 ssize_t count;
4583 int err;
4584
4585 if (IS_IMMUTABLE(inode))
4586 return -EPERM;
4587
4588 if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED))
4589 return -EPERM;
4590
4591 count = generic_write_checks(iocb, from);
4592 if (count <= 0)
4593 return count;
4594
4595 err = file_modified(file);
4596 if (err)
4597 return err;
4598 return count;
4599 }
4600
4601 /*
4602 * Preallocate blocks for a write request, if it is possible and helpful to do
4603 * so. Returns a positive number if blocks may have been preallocated, 0 if no
4604 * blocks were preallocated, or a negative errno value if something went
4605 * seriously wrong. Also sets FI_PREALLOCATED_ALL on the inode if *all* the
4606 * requested blocks (not just some of them) have been allocated.
4607 */
f2fs_preallocate_blocks(struct kiocb * iocb,struct iov_iter * iter,bool dio)4608 static int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *iter,
4609 bool dio)
4610 {
4611 struct inode *inode = file_inode(iocb->ki_filp);
4612 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4613 const loff_t pos = iocb->ki_pos;
4614 const size_t count = iov_iter_count(iter);
4615 struct f2fs_map_blocks map = {};
4616 int flag;
4617 int ret;
4618
4619 /* If it will be an out-of-place direct write, don't bother. */
4620 if (dio && f2fs_lfs_mode(sbi))
4621 return 0;
4622 /*
4623 * Don't preallocate holes aligned to DIO_SKIP_HOLES which turns into
4624 * buffered IO, if DIO meets any holes.
4625 */
4626 if (dio && i_size_read(inode) &&
4627 (F2FS_BYTES_TO_BLK(pos) < F2FS_BLK_ALIGN(i_size_read(inode))))
4628 return 0;
4629
4630 /* No-wait I/O can't allocate blocks. */
4631 if (iocb->ki_flags & IOCB_NOWAIT)
4632 return 0;
4633
4634 /* If it will be a short write, don't bother. */
4635 if (fault_in_iov_iter_readable(iter, count))
4636 return 0;
4637
4638 if (f2fs_has_inline_data(inode)) {
4639 /* If the data will fit inline, don't bother. */
4640 if (pos + count <= MAX_INLINE_DATA(inode))
4641 return 0;
4642 ret = f2fs_convert_inline_inode(inode);
4643 if (ret)
4644 return ret;
4645 }
4646
4647 /* Do not preallocate blocks that will be written partially in 4KB. */
4648 map.m_lblk = F2FS_BLK_ALIGN(pos);
4649 map.m_len = F2FS_BYTES_TO_BLK(pos + count);
4650 if (map.m_len > map.m_lblk)
4651 map.m_len -= map.m_lblk;
4652 else
4653 map.m_len = 0;
4654 map.m_may_create = true;
4655 if (dio) {
4656 map.m_seg_type = f2fs_rw_hint_to_seg_type(inode->i_write_hint);
4657 flag = F2FS_GET_BLOCK_PRE_DIO;
4658 } else {
4659 map.m_seg_type = NO_CHECK_TYPE;
4660 flag = F2FS_GET_BLOCK_PRE_AIO;
4661 }
4662
4663 ret = f2fs_map_blocks(inode, &map, flag);
4664 /* -ENOSPC|-EDQUOT are fine to report the number of allocated blocks. */
4665 if (ret < 0 && !((ret == -ENOSPC || ret == -EDQUOT) && map.m_len > 0))
4666 return ret;
4667 if (ret == 0)
4668 set_inode_flag(inode, FI_PREALLOCATED_ALL);
4669 return map.m_len;
4670 }
4671
f2fs_buffered_write_iter(struct kiocb * iocb,struct iov_iter * from)4672 static ssize_t f2fs_buffered_write_iter(struct kiocb *iocb,
4673 struct iov_iter *from)
4674 {
4675 struct file *file = iocb->ki_filp;
4676 struct inode *inode = file_inode(file);
4677 ssize_t ret;
4678
4679 if (iocb->ki_flags & IOCB_NOWAIT)
4680 return -EOPNOTSUPP;
4681
4682 ret = generic_perform_write(iocb, from);
4683
4684 if (ret > 0) {
4685 f2fs_update_iostat(F2FS_I_SB(inode), inode,
4686 APP_BUFFERED_IO, ret);
4687 }
4688 return ret;
4689 }
4690
f2fs_dio_write_end_io(struct kiocb * iocb,ssize_t size,int error,unsigned int flags)4691 static int f2fs_dio_write_end_io(struct kiocb *iocb, ssize_t size, int error,
4692 unsigned int flags)
4693 {
4694 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(iocb->ki_filp));
4695
4696 dec_page_count(sbi, F2FS_DIO_WRITE);
4697 if (error)
4698 return error;
4699 f2fs_update_time(sbi, REQ_TIME);
4700 f2fs_update_iostat(sbi, NULL, APP_DIRECT_IO, size);
4701 return 0;
4702 }
4703
4704 static const struct iomap_dio_ops f2fs_iomap_dio_write_ops = {
4705 .end_io = f2fs_dio_write_end_io,
4706 };
4707
f2fs_flush_buffered_write(struct address_space * mapping,loff_t start_pos,loff_t end_pos)4708 static void f2fs_flush_buffered_write(struct address_space *mapping,
4709 loff_t start_pos, loff_t end_pos)
4710 {
4711 int ret;
4712
4713 ret = filemap_write_and_wait_range(mapping, start_pos, end_pos);
4714 if (ret < 0)
4715 return;
4716 invalidate_mapping_pages(mapping,
4717 start_pos >> PAGE_SHIFT,
4718 end_pos >> PAGE_SHIFT);
4719 }
4720
f2fs_dio_write_iter(struct kiocb * iocb,struct iov_iter * from,bool * may_need_sync)4721 static ssize_t f2fs_dio_write_iter(struct kiocb *iocb, struct iov_iter *from,
4722 bool *may_need_sync)
4723 {
4724 struct file *file = iocb->ki_filp;
4725 struct inode *inode = file_inode(file);
4726 struct f2fs_inode_info *fi = F2FS_I(inode);
4727 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4728 const bool do_opu = f2fs_lfs_mode(sbi);
4729 const loff_t pos = iocb->ki_pos;
4730 const ssize_t count = iov_iter_count(from);
4731 unsigned int dio_flags;
4732 struct iomap_dio *dio;
4733 ssize_t ret;
4734
4735 trace_f2fs_direct_IO_enter(inode, iocb, count, WRITE);
4736
4737 if (iocb->ki_flags & IOCB_NOWAIT) {
4738 /* f2fs_convert_inline_inode() and block allocation can block */
4739 if (f2fs_has_inline_data(inode) ||
4740 !f2fs_overwrite_io(inode, pos, count)) {
4741 ret = -EAGAIN;
4742 goto out;
4743 }
4744
4745 if (!f2fs_down_read_trylock(&fi->i_gc_rwsem[WRITE])) {
4746 ret = -EAGAIN;
4747 goto out;
4748 }
4749 if (do_opu && !f2fs_down_read_trylock(&fi->i_gc_rwsem[READ])) {
4750 f2fs_up_read(&fi->i_gc_rwsem[WRITE]);
4751 ret = -EAGAIN;
4752 goto out;
4753 }
4754 } else {
4755 ret = f2fs_convert_inline_inode(inode);
4756 if (ret)
4757 goto out;
4758
4759 f2fs_down_read(&fi->i_gc_rwsem[WRITE]);
4760 if (do_opu)
4761 f2fs_down_read(&fi->i_gc_rwsem[READ]);
4762 }
4763
4764 /*
4765 * We have to use __iomap_dio_rw() and iomap_dio_complete() instead of
4766 * the higher-level function iomap_dio_rw() in order to ensure that the
4767 * F2FS_DIO_WRITE counter will be decremented correctly in all cases.
4768 */
4769 inc_page_count(sbi, F2FS_DIO_WRITE);
4770 dio_flags = 0;
4771 if (pos + count > inode->i_size)
4772 dio_flags |= IOMAP_DIO_FORCE_WAIT;
4773 dio = __iomap_dio_rw(iocb, from, &f2fs_iomap_ops,
4774 &f2fs_iomap_dio_write_ops, dio_flags, NULL, 0);
4775 if (IS_ERR_OR_NULL(dio)) {
4776 ret = PTR_ERR_OR_ZERO(dio);
4777 if (ret == -ENOTBLK)
4778 ret = 0;
4779 if (ret != -EIOCBQUEUED)
4780 dec_page_count(sbi, F2FS_DIO_WRITE);
4781 } else {
4782 ret = iomap_dio_complete(dio);
4783 }
4784
4785 if (do_opu)
4786 f2fs_up_read(&fi->i_gc_rwsem[READ]);
4787 f2fs_up_read(&fi->i_gc_rwsem[WRITE]);
4788
4789 if (ret < 0)
4790 goto out;
4791 if (pos + ret > inode->i_size)
4792 f2fs_i_size_write(inode, pos + ret);
4793 if (!do_opu)
4794 set_inode_flag(inode, FI_UPDATE_WRITE);
4795
4796 if (iov_iter_count(from)) {
4797 ssize_t ret2;
4798 loff_t bufio_start_pos = iocb->ki_pos;
4799
4800 /*
4801 * The direct write was partial, so we need to fall back to a
4802 * buffered write for the remainder.
4803 */
4804
4805 ret2 = f2fs_buffered_write_iter(iocb, from);
4806 if (iov_iter_count(from))
4807 f2fs_write_failed(inode, iocb->ki_pos);
4808 if (ret2 < 0)
4809 goto out;
4810
4811 /*
4812 * Ensure that the pagecache pages are written to disk and
4813 * invalidated to preserve the expected O_DIRECT semantics.
4814 */
4815 if (ret2 > 0) {
4816 loff_t bufio_end_pos = bufio_start_pos + ret2 - 1;
4817
4818 ret += ret2;
4819
4820 f2fs_flush_buffered_write(file->f_mapping,
4821 bufio_start_pos,
4822 bufio_end_pos);
4823 }
4824 } else {
4825 /* iomap_dio_rw() already handled the generic_write_sync(). */
4826 *may_need_sync = false;
4827 }
4828 out:
4829 trace_f2fs_direct_IO_exit(inode, pos, count, WRITE, ret);
4830 return ret;
4831 }
4832
f2fs_file_write_iter(struct kiocb * iocb,struct iov_iter * from)4833 static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
4834 {
4835 struct inode *inode = file_inode(iocb->ki_filp);
4836 const loff_t orig_pos = iocb->ki_pos;
4837 const size_t orig_count = iov_iter_count(from);
4838 loff_t target_size;
4839 bool dio;
4840 bool may_need_sync = true;
4841 int preallocated;
4842 ssize_t ret;
4843
4844 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) {
4845 ret = -EIO;
4846 goto out;
4847 }
4848
4849 if (!f2fs_is_compress_backend_ready(inode)) {
4850 ret = -EOPNOTSUPP;
4851 goto out;
4852 }
4853
4854 if (iocb->ki_flags & IOCB_NOWAIT) {
4855 if (!inode_trylock(inode)) {
4856 ret = -EAGAIN;
4857 goto out;
4858 }
4859 } else {
4860 inode_lock(inode);
4861 }
4862
4863 ret = f2fs_write_checks(iocb, from);
4864 if (ret <= 0)
4865 goto out_unlock;
4866
4867 /* Determine whether we will do a direct write or a buffered write. */
4868 dio = f2fs_should_use_dio(inode, iocb, from);
4869
4870 /* Possibly preallocate the blocks for the write. */
4871 target_size = iocb->ki_pos + iov_iter_count(from);
4872 preallocated = f2fs_preallocate_blocks(iocb, from, dio);
4873 if (preallocated < 0) {
4874 ret = preallocated;
4875 } else {
4876 if (trace_f2fs_datawrite_start_enabled())
4877 f2fs_trace_rw_file_path(iocb->ki_filp, iocb->ki_pos,
4878 orig_count, WRITE);
4879
4880 /* Do the actual write. */
4881 ret = dio ?
4882 f2fs_dio_write_iter(iocb, from, &may_need_sync) :
4883 f2fs_buffered_write_iter(iocb, from);
4884
4885 if (trace_f2fs_datawrite_end_enabled())
4886 trace_f2fs_datawrite_end(inode, orig_pos, ret);
4887 }
4888
4889 /* Don't leave any preallocated blocks around past i_size. */
4890 if (preallocated && i_size_read(inode) < target_size) {
4891 f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
4892 filemap_invalidate_lock(inode->i_mapping);
4893 if (!f2fs_truncate(inode))
4894 file_dont_truncate(inode);
4895 filemap_invalidate_unlock(inode->i_mapping);
4896 f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
4897 } else {
4898 file_dont_truncate(inode);
4899 }
4900
4901 clear_inode_flag(inode, FI_PREALLOCATED_ALL);
4902 out_unlock:
4903 inode_unlock(inode);
4904 out:
4905 trace_f2fs_file_write_iter(inode, orig_pos, orig_count, ret);
4906
4907 if (ret > 0 && may_need_sync)
4908 ret = generic_write_sync(iocb, ret);
4909
4910 /* If buffered IO was forced, flush and drop the data from
4911 * the page cache to preserve O_DIRECT semantics
4912 */
4913 if (ret > 0 && !dio && (iocb->ki_flags & IOCB_DIRECT))
4914 f2fs_flush_buffered_write(iocb->ki_filp->f_mapping,
4915 orig_pos,
4916 orig_pos + ret - 1);
4917
4918 return ret;
4919 }
4920
f2fs_file_fadvise(struct file * filp,loff_t offset,loff_t len,int advice)4921 static int f2fs_file_fadvise(struct file *filp, loff_t offset, loff_t len,
4922 int advice)
4923 {
4924 struct address_space *mapping;
4925 struct backing_dev_info *bdi;
4926 struct inode *inode = file_inode(filp);
4927 int err;
4928
4929 if (advice == POSIX_FADV_SEQUENTIAL) {
4930 if (S_ISFIFO(inode->i_mode))
4931 return -ESPIPE;
4932
4933 mapping = filp->f_mapping;
4934 if (!mapping || len < 0)
4935 return -EINVAL;
4936
4937 bdi = inode_to_bdi(mapping->host);
4938 filp->f_ra.ra_pages = bdi->ra_pages *
4939 F2FS_I_SB(inode)->seq_file_ra_mul;
4940 spin_lock(&filp->f_lock);
4941 filp->f_mode &= ~FMODE_RANDOM;
4942 spin_unlock(&filp->f_lock);
4943 return 0;
4944 }
4945
4946 err = generic_fadvise(filp, offset, len, advice);
4947 if (!err && advice == POSIX_FADV_DONTNEED &&
4948 test_opt(F2FS_I_SB(inode), COMPRESS_CACHE) &&
4949 f2fs_compressed_file(inode))
4950 f2fs_invalidate_compress_pages(F2FS_I_SB(inode), inode->i_ino);
4951
4952 return err;
4953 }
4954
4955 #ifdef CONFIG_COMPAT
4956 struct compat_f2fs_gc_range {
4957 u32 sync;
4958 compat_u64 start;
4959 compat_u64 len;
4960 };
4961 #define F2FS_IOC32_GARBAGE_COLLECT_RANGE _IOW(F2FS_IOCTL_MAGIC, 11,\
4962 struct compat_f2fs_gc_range)
4963
f2fs_compat_ioc_gc_range(struct file * file,unsigned long arg)4964 static int f2fs_compat_ioc_gc_range(struct file *file, unsigned long arg)
4965 {
4966 struct compat_f2fs_gc_range __user *urange;
4967 struct f2fs_gc_range range;
4968 int err;
4969
4970 urange = compat_ptr(arg);
4971 err = get_user(range.sync, &urange->sync);
4972 err |= get_user(range.start, &urange->start);
4973 err |= get_user(range.len, &urange->len);
4974 if (err)
4975 return -EFAULT;
4976
4977 return __f2fs_ioc_gc_range(file, &range);
4978 }
4979
4980 struct compat_f2fs_move_range {
4981 u32 dst_fd;
4982 compat_u64 pos_in;
4983 compat_u64 pos_out;
4984 compat_u64 len;
4985 };
4986 #define F2FS_IOC32_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \
4987 struct compat_f2fs_move_range)
4988
f2fs_compat_ioc_move_range(struct file * file,unsigned long arg)4989 static int f2fs_compat_ioc_move_range(struct file *file, unsigned long arg)
4990 {
4991 struct compat_f2fs_move_range __user *urange;
4992 struct f2fs_move_range range;
4993 int err;
4994
4995 urange = compat_ptr(arg);
4996 err = get_user(range.dst_fd, &urange->dst_fd);
4997 err |= get_user(range.pos_in, &urange->pos_in);
4998 err |= get_user(range.pos_out, &urange->pos_out);
4999 err |= get_user(range.len, &urange->len);
5000 if (err)
5001 return -EFAULT;
5002
5003 return __f2fs_ioc_move_range(file, &range);
5004 }
5005
f2fs_compat_ioctl(struct file * file,unsigned int cmd,unsigned long arg)5006 long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
5007 {
5008 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
5009 return -EIO;
5010 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(file))))
5011 return -ENOSPC;
5012
5013 switch (cmd) {
5014 case FS_IOC32_GETVERSION:
5015 cmd = FS_IOC_GETVERSION;
5016 break;
5017 case F2FS_IOC32_GARBAGE_COLLECT_RANGE:
5018 return f2fs_compat_ioc_gc_range(file, arg);
5019 case F2FS_IOC32_MOVE_RANGE:
5020 return f2fs_compat_ioc_move_range(file, arg);
5021 case F2FS_IOC_START_ATOMIC_WRITE:
5022 case F2FS_IOC_START_ATOMIC_REPLACE:
5023 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
5024 case F2FS_IOC_START_VOLATILE_WRITE:
5025 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
5026 case F2FS_IOC_ABORT_ATOMIC_WRITE:
5027 case F2FS_IOC_SHUTDOWN:
5028 case FITRIM:
5029 case FS_IOC_SET_ENCRYPTION_POLICY:
5030 case FS_IOC_GET_ENCRYPTION_PWSALT:
5031 case FS_IOC_GET_ENCRYPTION_POLICY:
5032 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
5033 case FS_IOC_ADD_ENCRYPTION_KEY:
5034 case FS_IOC_REMOVE_ENCRYPTION_KEY:
5035 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
5036 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
5037 case FS_IOC_GET_ENCRYPTION_NONCE:
5038 case F2FS_IOC_GARBAGE_COLLECT:
5039 case F2FS_IOC_WRITE_CHECKPOINT:
5040 case F2FS_IOC_DEFRAGMENT:
5041 case F2FS_IOC_FLUSH_DEVICE:
5042 case F2FS_IOC_GET_FEATURES:
5043 case F2FS_IOC_GET_PIN_FILE:
5044 case F2FS_IOC_SET_PIN_FILE:
5045 case F2FS_IOC_PRECACHE_EXTENTS:
5046 case F2FS_IOC_RESIZE_FS:
5047 case FS_IOC_ENABLE_VERITY:
5048 case FS_IOC_MEASURE_VERITY:
5049 case FS_IOC_READ_VERITY_METADATA:
5050 case FS_IOC_GETFSLABEL:
5051 case FS_IOC_SETFSLABEL:
5052 case F2FS_IOC_GET_COMPRESS_BLOCKS:
5053 case F2FS_IOC_RELEASE_COMPRESS_BLOCKS:
5054 case F2FS_IOC_RESERVE_COMPRESS_BLOCKS:
5055 case F2FS_IOC_SEC_TRIM_FILE:
5056 case F2FS_IOC_GET_COMPRESS_OPTION:
5057 case F2FS_IOC_SET_COMPRESS_OPTION:
5058 case F2FS_IOC_DECOMPRESS_FILE:
5059 case F2FS_IOC_COMPRESS_FILE:
5060 break;
5061 default:
5062 return -ENOIOCTLCMD;
5063 }
5064 return __f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
5065 }
5066 #endif
5067
5068 const struct file_operations f2fs_file_operations = {
5069 .llseek = f2fs_llseek,
5070 .read_iter = f2fs_file_read_iter,
5071 .write_iter = f2fs_file_write_iter,
5072 .iopoll = iocb_bio_iopoll,
5073 .open = f2fs_file_open,
5074 .release = f2fs_release_file,
5075 .mmap = f2fs_file_mmap,
5076 .flush = f2fs_file_flush,
5077 .fsync = f2fs_sync_file,
5078 .fallocate = f2fs_fallocate,
5079 .unlocked_ioctl = f2fs_ioctl,
5080 #ifdef CONFIG_COMPAT
5081 .compat_ioctl = f2fs_compat_ioctl,
5082 #endif
5083 .splice_read = f2fs_file_splice_read,
5084 .splice_write = iter_file_splice_write,
5085 .fadvise = f2fs_file_fadvise,
5086 };
5087