Loading...
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
27#include "f2fs.h"
28#include "node.h"
29#include "segment.h"
30#include "xattr.h"
31#include "acl.h"
32#include "gc.h"
33#include <trace/events/f2fs.h>
34#include <uapi/linux/f2fs.h>
35
36static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf)
37{
38 struct inode *inode = file_inode(vmf->vma->vm_file);
39 vm_fault_t ret;
40
41 down_read(&F2FS_I(inode)->i_mmap_sem);
42 ret = filemap_fault(vmf);
43 up_read(&F2FS_I(inode)->i_mmap_sem);
44
45 if (!ret)
46 f2fs_update_iostat(F2FS_I_SB(inode), APP_MAPPED_READ_IO,
47 F2FS_BLKSIZE);
48
49 trace_f2fs_filemap_fault(inode, vmf->pgoff, (unsigned long)ret);
50
51 return ret;
52}
53
54static 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 down_read(&F2FS_I(inode)->i_mmap_sem);
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 f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true);
117 set_new_dnode(&dn, inode, NULL, NULL, 0);
118 err = f2fs_get_block(&dn, page->index);
119 f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false);
120 }
121
122#ifdef CONFIG_F2FS_FS_COMPRESSION
123 if (!need_alloc) {
124 set_new_dnode(&dn, inode, NULL, NULL, 0);
125 err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE);
126 f2fs_put_dnode(&dn);
127 }
128#endif
129 if (err) {
130 unlock_page(page);
131 goto out_sem;
132 }
133
134 f2fs_wait_on_page_writeback(page, DATA, false, true);
135
136 /* wait for GCed page writeback via META_MAPPING */
137 f2fs_wait_on_block_writeback(inode, dn.data_blkaddr);
138
139 /*
140 * check to see if the page is mapped already (no holes)
141 */
142 if (PageMappedToDisk(page))
143 goto out_sem;
144
145 /* page is wholly or partially inside EOF */
146 if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
147 i_size_read(inode)) {
148 loff_t offset;
149
150 offset = i_size_read(inode) & ~PAGE_MASK;
151 zero_user_segment(page, offset, PAGE_SIZE);
152 }
153 set_page_dirty(page);
154 if (!PageUptodate(page))
155 SetPageUptodate(page);
156
157 f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE);
158 f2fs_update_time(sbi, REQ_TIME);
159
160 trace_f2fs_vm_page_mkwrite(page, DATA);
161out_sem:
162 up_read(&F2FS_I(inode)->i_mmap_sem);
163
164 sb_end_pagefault(inode->i_sb);
165err:
166 return block_page_mkwrite_return(err);
167}
168
169static const struct vm_operations_struct f2fs_file_vm_ops = {
170 .fault = f2fs_filemap_fault,
171 .map_pages = filemap_map_pages,
172 .page_mkwrite = f2fs_vm_page_mkwrite,
173};
174
175static int get_parent_ino(struct inode *inode, nid_t *pino)
176{
177 struct dentry *dentry;
178
179 /*
180 * Make sure to get the non-deleted alias. The alias associated with
181 * the open file descriptor being fsync()'ed may be deleted already.
182 */
183 dentry = d_find_alias(inode);
184 if (!dentry)
185 return 0;
186
187 *pino = parent_ino(dentry);
188 dput(dentry);
189 return 1;
190}
191
192static inline enum cp_reason_type need_do_checkpoint(struct inode *inode)
193{
194 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
195 enum cp_reason_type cp_reason = CP_NO_NEEDED;
196
197 if (!S_ISREG(inode->i_mode))
198 cp_reason = CP_NON_REGULAR;
199 else if (f2fs_compressed_file(inode))
200 cp_reason = CP_COMPRESSED;
201 else if (inode->i_nlink != 1)
202 cp_reason = CP_HARDLINK;
203 else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
204 cp_reason = CP_SB_NEED_CP;
205 else if (file_wrong_pino(inode))
206 cp_reason = CP_WRONG_PINO;
207 else if (!f2fs_space_for_roll_forward(sbi))
208 cp_reason = CP_NO_SPC_ROLL;
209 else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
210 cp_reason = CP_NODE_NEED_CP;
211 else if (test_opt(sbi, FASTBOOT))
212 cp_reason = CP_FASTBOOT_MODE;
213 else if (F2FS_OPTION(sbi).active_logs == 2)
214 cp_reason = CP_SPEC_LOG_NUM;
215 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT &&
216 f2fs_need_dentry_mark(sbi, inode->i_ino) &&
217 f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino,
218 TRANS_DIR_INO))
219 cp_reason = CP_RECOVER_DIR;
220
221 return cp_reason;
222}
223
224static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
225{
226 struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
227 bool ret = false;
228 /* But we need to avoid that there are some inode updates */
229 if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino))
230 ret = true;
231 f2fs_put_page(i, 0);
232 return ret;
233}
234
235static void try_to_fix_pino(struct inode *inode)
236{
237 struct f2fs_inode_info *fi = F2FS_I(inode);
238 nid_t pino;
239
240 down_write(&fi->i_sem);
241 if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
242 get_parent_ino(inode, &pino)) {
243 f2fs_i_pino_write(inode, pino);
244 file_got_pino(inode);
245 }
246 up_write(&fi->i_sem);
247}
248
249static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
250 int datasync, bool atomic)
251{
252 struct inode *inode = file->f_mapping->host;
253 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
254 nid_t ino = inode->i_ino;
255 int ret = 0;
256 enum cp_reason_type cp_reason = 0;
257 struct writeback_control wbc = {
258 .sync_mode = WB_SYNC_ALL,
259 .nr_to_write = LONG_MAX,
260 .for_reclaim = 0,
261 };
262 unsigned int seq_id = 0;
263
264 if (unlikely(f2fs_readonly(inode->i_sb)))
265 return 0;
266
267 trace_f2fs_sync_file_enter(inode);
268
269 if (S_ISDIR(inode->i_mode))
270 goto go_write;
271
272 /* if fdatasync is triggered, let's do in-place-update */
273 if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
274 set_inode_flag(inode, FI_NEED_IPU);
275 ret = file_write_and_wait_range(file, start, end);
276 clear_inode_flag(inode, FI_NEED_IPU);
277
278 if (ret || is_sbi_flag_set(sbi, SBI_CP_DISABLED)) {
279 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
280 return ret;
281 }
282
283 /* if the inode is dirty, let's recover all the time */
284 if (!f2fs_skip_inode_update(inode, datasync)) {
285 f2fs_write_inode(inode, NULL);
286 goto go_write;
287 }
288
289 /*
290 * if there is no written data, don't waste time to write recovery info.
291 */
292 if (!is_inode_flag_set(inode, FI_APPEND_WRITE) &&
293 !f2fs_exist_written_data(sbi, ino, APPEND_INO)) {
294
295 /* it may call write_inode just prior to fsync */
296 if (need_inode_page_update(sbi, ino))
297 goto go_write;
298
299 if (is_inode_flag_set(inode, FI_UPDATE_WRITE) ||
300 f2fs_exist_written_data(sbi, ino, UPDATE_INO))
301 goto flush_out;
302 goto out;
303 }
304go_write:
305 /*
306 * Both of fdatasync() and fsync() are able to be recovered from
307 * sudden-power-off.
308 */
309 down_read(&F2FS_I(inode)->i_sem);
310 cp_reason = need_do_checkpoint(inode);
311 up_read(&F2FS_I(inode)->i_sem);
312
313 if (cp_reason) {
314 /* all the dirty node pages should be flushed for POR */
315 ret = f2fs_sync_fs(inode->i_sb, 1);
316
317 /*
318 * We've secured consistency through sync_fs. Following pino
319 * will be used only for fsynced inodes after checkpoint.
320 */
321 try_to_fix_pino(inode);
322 clear_inode_flag(inode, FI_APPEND_WRITE);
323 clear_inode_flag(inode, FI_UPDATE_WRITE);
324 goto out;
325 }
326sync_nodes:
327 atomic_inc(&sbi->wb_sync_req[NODE]);
328 ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic, &seq_id);
329 atomic_dec(&sbi->wb_sync_req[NODE]);
330 if (ret)
331 goto out;
332
333 /* if cp_error was enabled, we should avoid infinite loop */
334 if (unlikely(f2fs_cp_error(sbi))) {
335 ret = -EIO;
336 goto out;
337 }
338
339 if (f2fs_need_inode_block_update(sbi, ino)) {
340 f2fs_mark_inode_dirty_sync(inode, true);
341 f2fs_write_inode(inode, NULL);
342 goto sync_nodes;
343 }
344
345 /*
346 * If it's atomic_write, it's just fine to keep write ordering. So
347 * here we don't need to wait for node write completion, since we use
348 * node chain which serializes node blocks. If one of node writes are
349 * reordered, we can see simply broken chain, resulting in stopping
350 * roll-forward recovery. It means we'll recover all or none node blocks
351 * given fsync mark.
352 */
353 if (!atomic) {
354 ret = f2fs_wait_on_node_pages_writeback(sbi, seq_id);
355 if (ret)
356 goto out;
357 }
358
359 /* once recovery info is written, don't need to tack this */
360 f2fs_remove_ino_entry(sbi, ino, APPEND_INO);
361 clear_inode_flag(inode, FI_APPEND_WRITE);
362flush_out:
363 if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER)
364 ret = f2fs_issue_flush(sbi, inode->i_ino);
365 if (!ret) {
366 f2fs_remove_ino_entry(sbi, ino, UPDATE_INO);
367 clear_inode_flag(inode, FI_UPDATE_WRITE);
368 f2fs_remove_ino_entry(sbi, ino, FLUSH_INO);
369 }
370 f2fs_update_time(sbi, REQ_TIME);
371out:
372 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
373 return ret;
374}
375
376int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
377{
378 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
379 return -EIO;
380 return f2fs_do_sync_file(file, start, end, datasync, false);
381}
382
383static bool __found_offset(struct address_space *mapping, block_t blkaddr,
384 pgoff_t index, int whence)
385{
386 switch (whence) {
387 case SEEK_DATA:
388 if (__is_valid_data_blkaddr(blkaddr))
389 return true;
390 if (blkaddr == NEW_ADDR &&
391 xa_get_mark(&mapping->i_pages, index, PAGECACHE_TAG_DIRTY))
392 return true;
393 break;
394 case SEEK_HOLE:
395 if (blkaddr == NULL_ADDR)
396 return true;
397 break;
398 }
399 return false;
400}
401
402static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
403{
404 struct inode *inode = file->f_mapping->host;
405 loff_t maxbytes = inode->i_sb->s_maxbytes;
406 struct dnode_of_data dn;
407 pgoff_t pgofs, end_offset;
408 loff_t data_ofs = offset;
409 loff_t isize;
410 int err = 0;
411
412 inode_lock(inode);
413
414 isize = i_size_read(inode);
415 if (offset >= isize)
416 goto fail;
417
418 /* handle inline data case */
419 if (f2fs_has_inline_data(inode)) {
420 if (whence == SEEK_HOLE) {
421 data_ofs = isize;
422 goto found;
423 } else if (whence == SEEK_DATA) {
424 data_ofs = offset;
425 goto found;
426 }
427 }
428
429 pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
430
431 for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
432 set_new_dnode(&dn, inode, NULL, NULL, 0);
433 err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
434 if (err && err != -ENOENT) {
435 goto fail;
436 } else if (err == -ENOENT) {
437 /* direct node does not exists */
438 if (whence == SEEK_DATA) {
439 pgofs = f2fs_get_next_page_offset(&dn, pgofs);
440 continue;
441 } else {
442 goto found;
443 }
444 }
445
446 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
447
448 /* find data/hole in dnode block */
449 for (; dn.ofs_in_node < end_offset;
450 dn.ofs_in_node++, pgofs++,
451 data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
452 block_t blkaddr;
453
454 blkaddr = f2fs_data_blkaddr(&dn);
455
456 if (__is_valid_data_blkaddr(blkaddr) &&
457 !f2fs_is_valid_blkaddr(F2FS_I_SB(inode),
458 blkaddr, DATA_GENERIC_ENHANCE)) {
459 f2fs_put_dnode(&dn);
460 goto fail;
461 }
462
463 if (__found_offset(file->f_mapping, blkaddr,
464 pgofs, whence)) {
465 f2fs_put_dnode(&dn);
466 goto found;
467 }
468 }
469 f2fs_put_dnode(&dn);
470 }
471
472 if (whence == SEEK_DATA)
473 goto fail;
474found:
475 if (whence == SEEK_HOLE && data_ofs > isize)
476 data_ofs = isize;
477 inode_unlock(inode);
478 return vfs_setpos(file, data_ofs, maxbytes);
479fail:
480 inode_unlock(inode);
481 return -ENXIO;
482}
483
484static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
485{
486 struct inode *inode = file->f_mapping->host;
487 loff_t maxbytes = inode->i_sb->s_maxbytes;
488
489 if (f2fs_compressed_file(inode))
490 maxbytes = max_file_blocks(inode) << F2FS_BLKSIZE_BITS;
491
492 switch (whence) {
493 case SEEK_SET:
494 case SEEK_CUR:
495 case SEEK_END:
496 return generic_file_llseek_size(file, offset, whence,
497 maxbytes, i_size_read(inode));
498 case SEEK_DATA:
499 case SEEK_HOLE:
500 if (offset < 0)
501 return -ENXIO;
502 return f2fs_seek_block(file, offset, whence);
503 }
504
505 return -EINVAL;
506}
507
508static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
509{
510 struct inode *inode = file_inode(file);
511
512 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
513 return -EIO;
514
515 if (!f2fs_is_compress_backend_ready(inode))
516 return -EOPNOTSUPP;
517
518 file_accessed(file);
519 vma->vm_ops = &f2fs_file_vm_ops;
520 set_inode_flag(inode, FI_MMAP_FILE);
521 return 0;
522}
523
524static int f2fs_file_open(struct inode *inode, struct file *filp)
525{
526 int err = fscrypt_file_open(inode, filp);
527
528 if (err)
529 return err;
530
531 if (!f2fs_is_compress_backend_ready(inode))
532 return -EOPNOTSUPP;
533
534 err = fsverity_file_open(inode, filp);
535 if (err)
536 return err;
537
538 filp->f_mode |= FMODE_NOWAIT;
539
540 return dquot_file_open(inode, filp);
541}
542
543void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count)
544{
545 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
546 struct f2fs_node *raw_node;
547 int nr_free = 0, ofs = dn->ofs_in_node, len = count;
548 __le32 *addr;
549 int base = 0;
550 bool compressed_cluster = false;
551 int cluster_index = 0, valid_blocks = 0;
552 int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
553 bool released = !atomic_read(&F2FS_I(dn->inode)->i_compr_blocks);
554
555 if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode))
556 base = get_extra_isize(dn->inode);
557
558 raw_node = F2FS_NODE(dn->node_page);
559 addr = blkaddr_in_node(raw_node) + base + ofs;
560
561 /* Assumption: truncateion starts with cluster */
562 for (; count > 0; count--, addr++, dn->ofs_in_node++, cluster_index++) {
563 block_t blkaddr = le32_to_cpu(*addr);
564
565 if (f2fs_compressed_file(dn->inode) &&
566 !(cluster_index & (cluster_size - 1))) {
567 if (compressed_cluster)
568 f2fs_i_compr_blocks_update(dn->inode,
569 valid_blocks, false);
570 compressed_cluster = (blkaddr == COMPRESS_ADDR);
571 valid_blocks = 0;
572 }
573
574 if (blkaddr == NULL_ADDR)
575 continue;
576
577 dn->data_blkaddr = NULL_ADDR;
578 f2fs_set_data_blkaddr(dn);
579
580 if (__is_valid_data_blkaddr(blkaddr)) {
581 if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
582 DATA_GENERIC_ENHANCE))
583 continue;
584 if (compressed_cluster)
585 valid_blocks++;
586 }
587
588 if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page))
589 clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN);
590
591 f2fs_invalidate_blocks(sbi, blkaddr);
592
593 if (!released || blkaddr != COMPRESS_ADDR)
594 nr_free++;
595 }
596
597 if (compressed_cluster)
598 f2fs_i_compr_blocks_update(dn->inode, valid_blocks, false);
599
600 if (nr_free) {
601 pgoff_t fofs;
602 /*
603 * once we invalidate valid blkaddr in range [ofs, ofs + count],
604 * we will invalidate all blkaddr in the whole range.
605 */
606 fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page),
607 dn->inode) + ofs;
608 f2fs_update_extent_cache_range(dn, fofs, 0, len);
609 dec_valid_block_count(sbi, dn->inode, nr_free);
610 }
611 dn->ofs_in_node = ofs;
612
613 f2fs_update_time(sbi, REQ_TIME);
614 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
615 dn->ofs_in_node, nr_free);
616}
617
618void f2fs_truncate_data_blocks(struct dnode_of_data *dn)
619{
620 f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK(dn->inode));
621}
622
623static int truncate_partial_data_page(struct inode *inode, u64 from,
624 bool cache_only)
625{
626 loff_t offset = from & (PAGE_SIZE - 1);
627 pgoff_t index = from >> PAGE_SHIFT;
628 struct address_space *mapping = inode->i_mapping;
629 struct page *page;
630
631 if (!offset && !cache_only)
632 return 0;
633
634 if (cache_only) {
635 page = find_lock_page(mapping, index);
636 if (page && PageUptodate(page))
637 goto truncate_out;
638 f2fs_put_page(page, 1);
639 return 0;
640 }
641
642 page = f2fs_get_lock_data_page(inode, index, true);
643 if (IS_ERR(page))
644 return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
645truncate_out:
646 f2fs_wait_on_page_writeback(page, DATA, true, true);
647 zero_user(page, offset, PAGE_SIZE - offset);
648
649 /* An encrypted inode should have a key and truncate the last page. */
650 f2fs_bug_on(F2FS_I_SB(inode), cache_only && IS_ENCRYPTED(inode));
651 if (!cache_only)
652 set_page_dirty(page);
653 f2fs_put_page(page, 1);
654 return 0;
655}
656
657int f2fs_do_truncate_blocks(struct inode *inode, u64 from, bool lock)
658{
659 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
660 struct dnode_of_data dn;
661 pgoff_t free_from;
662 int count = 0, err = 0;
663 struct page *ipage;
664 bool truncate_page = false;
665
666 trace_f2fs_truncate_blocks_enter(inode, from);
667
668 free_from = (pgoff_t)F2FS_BLK_ALIGN(from);
669
670 if (free_from >= max_file_blocks(inode))
671 goto free_partial;
672
673 if (lock)
674 f2fs_lock_op(sbi);
675
676 ipage = f2fs_get_node_page(sbi, inode->i_ino);
677 if (IS_ERR(ipage)) {
678 err = PTR_ERR(ipage);
679 goto out;
680 }
681
682 if (f2fs_has_inline_data(inode)) {
683 f2fs_truncate_inline_inode(inode, ipage, from);
684 f2fs_put_page(ipage, 1);
685 truncate_page = true;
686 goto out;
687 }
688
689 set_new_dnode(&dn, inode, ipage, NULL, 0);
690 err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
691 if (err) {
692 if (err == -ENOENT)
693 goto free_next;
694 goto out;
695 }
696
697 count = ADDRS_PER_PAGE(dn.node_page, inode);
698
699 count -= dn.ofs_in_node;
700 f2fs_bug_on(sbi, count < 0);
701
702 if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
703 f2fs_truncate_data_blocks_range(&dn, count);
704 free_from += count;
705 }
706
707 f2fs_put_dnode(&dn);
708free_next:
709 err = f2fs_truncate_inode_blocks(inode, free_from);
710out:
711 if (lock)
712 f2fs_unlock_op(sbi);
713free_partial:
714 /* lastly zero out the first data page */
715 if (!err)
716 err = truncate_partial_data_page(inode, from, truncate_page);
717
718 trace_f2fs_truncate_blocks_exit(inode, err);
719 return err;
720}
721
722int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock)
723{
724 u64 free_from = from;
725 int err;
726
727#ifdef CONFIG_F2FS_FS_COMPRESSION
728 /*
729 * for compressed file, only support cluster size
730 * aligned truncation.
731 */
732 if (f2fs_compressed_file(inode))
733 free_from = round_up(from,
734 F2FS_I(inode)->i_cluster_size << PAGE_SHIFT);
735#endif
736
737 err = f2fs_do_truncate_blocks(inode, free_from, lock);
738 if (err)
739 return err;
740
741#ifdef CONFIG_F2FS_FS_COMPRESSION
742 if (from != free_from) {
743 err = f2fs_truncate_partial_cluster(inode, from, lock);
744 if (err)
745 return err;
746 }
747#endif
748
749 return 0;
750}
751
752int f2fs_truncate(struct inode *inode)
753{
754 int err;
755
756 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
757 return -EIO;
758
759 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
760 S_ISLNK(inode->i_mode)))
761 return 0;
762
763 trace_f2fs_truncate(inode);
764
765 if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) {
766 f2fs_show_injection_info(F2FS_I_SB(inode), FAULT_TRUNCATE);
767 return -EIO;
768 }
769
770 err = dquot_initialize(inode);
771 if (err)
772 return err;
773
774 /* we should check inline_data size */
775 if (!f2fs_may_inline_data(inode)) {
776 err = f2fs_convert_inline_inode(inode);
777 if (err)
778 return err;
779 }
780
781 err = f2fs_truncate_blocks(inode, i_size_read(inode), true);
782 if (err)
783 return err;
784
785 inode->i_mtime = inode->i_ctime = current_time(inode);
786 f2fs_mark_inode_dirty_sync(inode, false);
787 return 0;
788}
789
790int f2fs_getattr(struct user_namespace *mnt_userns, const struct path *path,
791 struct kstat *stat, u32 request_mask, unsigned int query_flags)
792{
793 struct inode *inode = d_inode(path->dentry);
794 struct f2fs_inode_info *fi = F2FS_I(inode);
795 struct f2fs_inode *ri;
796 unsigned int flags;
797
798 if (f2fs_has_extra_attr(inode) &&
799 f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
800 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
801 stat->result_mask |= STATX_BTIME;
802 stat->btime.tv_sec = fi->i_crtime.tv_sec;
803 stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
804 }
805
806 flags = fi->i_flags;
807 if (flags & F2FS_COMPR_FL)
808 stat->attributes |= STATX_ATTR_COMPRESSED;
809 if (flags & F2FS_APPEND_FL)
810 stat->attributes |= STATX_ATTR_APPEND;
811 if (IS_ENCRYPTED(inode))
812 stat->attributes |= STATX_ATTR_ENCRYPTED;
813 if (flags & F2FS_IMMUTABLE_FL)
814 stat->attributes |= STATX_ATTR_IMMUTABLE;
815 if (flags & F2FS_NODUMP_FL)
816 stat->attributes |= STATX_ATTR_NODUMP;
817 if (IS_VERITY(inode))
818 stat->attributes |= STATX_ATTR_VERITY;
819
820 stat->attributes_mask |= (STATX_ATTR_COMPRESSED |
821 STATX_ATTR_APPEND |
822 STATX_ATTR_ENCRYPTED |
823 STATX_ATTR_IMMUTABLE |
824 STATX_ATTR_NODUMP |
825 STATX_ATTR_VERITY);
826
827 generic_fillattr(&init_user_ns, inode, stat);
828
829 /* we need to show initial sectors used for inline_data/dentries */
830 if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) ||
831 f2fs_has_inline_dentry(inode))
832 stat->blocks += (stat->size + 511) >> 9;
833
834 return 0;
835}
836
837#ifdef CONFIG_F2FS_FS_POSIX_ACL
838static void __setattr_copy(struct user_namespace *mnt_userns,
839 struct inode *inode, const struct iattr *attr)
840{
841 unsigned int ia_valid = attr->ia_valid;
842
843 if (ia_valid & ATTR_UID)
844 inode->i_uid = attr->ia_uid;
845 if (ia_valid & ATTR_GID)
846 inode->i_gid = attr->ia_gid;
847 if (ia_valid & ATTR_ATIME)
848 inode->i_atime = attr->ia_atime;
849 if (ia_valid & ATTR_MTIME)
850 inode->i_mtime = attr->ia_mtime;
851 if (ia_valid & ATTR_CTIME)
852 inode->i_ctime = attr->ia_ctime;
853 if (ia_valid & ATTR_MODE) {
854 umode_t mode = attr->ia_mode;
855 kgid_t kgid = i_gid_into_mnt(mnt_userns, inode);
856
857 if (!in_group_p(kgid) && !capable_wrt_inode_uidgid(mnt_userns, inode, CAP_FSETID))
858 mode &= ~S_ISGID;
859 set_acl_inode(inode, mode);
860 }
861}
862#else
863#define __setattr_copy setattr_copy
864#endif
865
866int f2fs_setattr(struct user_namespace *mnt_userns, struct dentry *dentry,
867 struct iattr *attr)
868{
869 struct inode *inode = d_inode(dentry);
870 int err;
871
872 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
873 return -EIO;
874
875 if (unlikely(IS_IMMUTABLE(inode)))
876 return -EPERM;
877
878 if (unlikely(IS_APPEND(inode) &&
879 (attr->ia_valid & (ATTR_MODE | ATTR_UID |
880 ATTR_GID | ATTR_TIMES_SET))))
881 return -EPERM;
882
883 if ((attr->ia_valid & ATTR_SIZE) &&
884 !f2fs_is_compress_backend_ready(inode))
885 return -EOPNOTSUPP;
886
887 err = setattr_prepare(&init_user_ns, dentry, attr);
888 if (err)
889 return err;
890
891 err = fscrypt_prepare_setattr(dentry, attr);
892 if (err)
893 return err;
894
895 err = fsverity_prepare_setattr(dentry, attr);
896 if (err)
897 return err;
898
899 if (is_quota_modification(inode, attr)) {
900 err = dquot_initialize(inode);
901 if (err)
902 return err;
903 }
904 if ((attr->ia_valid & ATTR_UID &&
905 !uid_eq(attr->ia_uid, inode->i_uid)) ||
906 (attr->ia_valid & ATTR_GID &&
907 !gid_eq(attr->ia_gid, inode->i_gid))) {
908 f2fs_lock_op(F2FS_I_SB(inode));
909 err = dquot_transfer(inode, attr);
910 if (err) {
911 set_sbi_flag(F2FS_I_SB(inode),
912 SBI_QUOTA_NEED_REPAIR);
913 f2fs_unlock_op(F2FS_I_SB(inode));
914 return err;
915 }
916 /*
917 * update uid/gid under lock_op(), so that dquot and inode can
918 * be updated atomically.
919 */
920 if (attr->ia_valid & ATTR_UID)
921 inode->i_uid = attr->ia_uid;
922 if (attr->ia_valid & ATTR_GID)
923 inode->i_gid = attr->ia_gid;
924 f2fs_mark_inode_dirty_sync(inode, true);
925 f2fs_unlock_op(F2FS_I_SB(inode));
926 }
927
928 if (attr->ia_valid & ATTR_SIZE) {
929 loff_t old_size = i_size_read(inode);
930
931 if (attr->ia_size > MAX_INLINE_DATA(inode)) {
932 /*
933 * should convert inline inode before i_size_write to
934 * keep smaller than inline_data size with inline flag.
935 */
936 err = f2fs_convert_inline_inode(inode);
937 if (err)
938 return err;
939 }
940
941 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
942 down_write(&F2FS_I(inode)->i_mmap_sem);
943
944 truncate_setsize(inode, attr->ia_size);
945
946 if (attr->ia_size <= old_size)
947 err = f2fs_truncate(inode);
948 /*
949 * do not trim all blocks after i_size if target size is
950 * larger than i_size.
951 */
952 up_write(&F2FS_I(inode)->i_mmap_sem);
953 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
954 if (err)
955 return err;
956
957 spin_lock(&F2FS_I(inode)->i_size_lock);
958 inode->i_mtime = inode->i_ctime = current_time(inode);
959 F2FS_I(inode)->last_disk_size = i_size_read(inode);
960 spin_unlock(&F2FS_I(inode)->i_size_lock);
961 }
962
963 __setattr_copy(&init_user_ns, inode, attr);
964
965 if (attr->ia_valid & ATTR_MODE) {
966 err = posix_acl_chmod(&init_user_ns, inode, f2fs_get_inode_mode(inode));
967
968 if (is_inode_flag_set(inode, FI_ACL_MODE)) {
969 if (!err)
970 inode->i_mode = F2FS_I(inode)->i_acl_mode;
971 clear_inode_flag(inode, FI_ACL_MODE);
972 }
973 }
974
975 /* file size may changed here */
976 f2fs_mark_inode_dirty_sync(inode, true);
977
978 /* inode change will produce dirty node pages flushed by checkpoint */
979 f2fs_balance_fs(F2FS_I_SB(inode), true);
980
981 return err;
982}
983
984const struct inode_operations f2fs_file_inode_operations = {
985 .getattr = f2fs_getattr,
986 .setattr = f2fs_setattr,
987 .get_acl = f2fs_get_acl,
988 .set_acl = f2fs_set_acl,
989 .listxattr = f2fs_listxattr,
990 .fiemap = f2fs_fiemap,
991 .fileattr_get = f2fs_fileattr_get,
992 .fileattr_set = f2fs_fileattr_set,
993};
994
995static int fill_zero(struct inode *inode, pgoff_t index,
996 loff_t start, loff_t len)
997{
998 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
999 struct page *page;
1000
1001 if (!len)
1002 return 0;
1003
1004 f2fs_balance_fs(sbi, true);
1005
1006 f2fs_lock_op(sbi);
1007 page = f2fs_get_new_data_page(inode, NULL, index, false);
1008 f2fs_unlock_op(sbi);
1009
1010 if (IS_ERR(page))
1011 return PTR_ERR(page);
1012
1013 f2fs_wait_on_page_writeback(page, DATA, true, true);
1014 zero_user(page, start, len);
1015 set_page_dirty(page);
1016 f2fs_put_page(page, 1);
1017 return 0;
1018}
1019
1020int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
1021{
1022 int err;
1023
1024 while (pg_start < pg_end) {
1025 struct dnode_of_data dn;
1026 pgoff_t end_offset, count;
1027
1028 set_new_dnode(&dn, inode, NULL, NULL, 0);
1029 err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
1030 if (err) {
1031 if (err == -ENOENT) {
1032 pg_start = f2fs_get_next_page_offset(&dn,
1033 pg_start);
1034 continue;
1035 }
1036 return err;
1037 }
1038
1039 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1040 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
1041
1042 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
1043
1044 f2fs_truncate_data_blocks_range(&dn, count);
1045 f2fs_put_dnode(&dn);
1046
1047 pg_start += count;
1048 }
1049 return 0;
1050}
1051
1052static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
1053{
1054 pgoff_t pg_start, pg_end;
1055 loff_t off_start, off_end;
1056 int ret;
1057
1058 ret = f2fs_convert_inline_inode(inode);
1059 if (ret)
1060 return ret;
1061
1062 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1063 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
1064
1065 off_start = offset & (PAGE_SIZE - 1);
1066 off_end = (offset + len) & (PAGE_SIZE - 1);
1067
1068 if (pg_start == pg_end) {
1069 ret = fill_zero(inode, pg_start, off_start,
1070 off_end - off_start);
1071 if (ret)
1072 return ret;
1073 } else {
1074 if (off_start) {
1075 ret = fill_zero(inode, pg_start++, off_start,
1076 PAGE_SIZE - off_start);
1077 if (ret)
1078 return ret;
1079 }
1080 if (off_end) {
1081 ret = fill_zero(inode, pg_end, 0, off_end);
1082 if (ret)
1083 return ret;
1084 }
1085
1086 if (pg_start < pg_end) {
1087 loff_t blk_start, blk_end;
1088 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1089
1090 f2fs_balance_fs(sbi, true);
1091
1092 blk_start = (loff_t)pg_start << PAGE_SHIFT;
1093 blk_end = (loff_t)pg_end << PAGE_SHIFT;
1094
1095 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1096 down_write(&F2FS_I(inode)->i_mmap_sem);
1097
1098 truncate_pagecache_range(inode, blk_start, blk_end - 1);
1099
1100 f2fs_lock_op(sbi);
1101 ret = f2fs_truncate_hole(inode, pg_start, pg_end);
1102 f2fs_unlock_op(sbi);
1103
1104 up_write(&F2FS_I(inode)->i_mmap_sem);
1105 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1106 }
1107 }
1108
1109 return ret;
1110}
1111
1112static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr,
1113 int *do_replace, pgoff_t off, pgoff_t len)
1114{
1115 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1116 struct dnode_of_data dn;
1117 int ret, done, i;
1118
1119next_dnode:
1120 set_new_dnode(&dn, inode, NULL, NULL, 0);
1121 ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA);
1122 if (ret && ret != -ENOENT) {
1123 return ret;
1124 } else if (ret == -ENOENT) {
1125 if (dn.max_level == 0)
1126 return -ENOENT;
1127 done = min((pgoff_t)ADDRS_PER_BLOCK(inode) -
1128 dn.ofs_in_node, len);
1129 blkaddr += done;
1130 do_replace += done;
1131 goto next;
1132 }
1133
1134 done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) -
1135 dn.ofs_in_node, len);
1136 for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) {
1137 *blkaddr = f2fs_data_blkaddr(&dn);
1138
1139 if (__is_valid_data_blkaddr(*blkaddr) &&
1140 !f2fs_is_valid_blkaddr(sbi, *blkaddr,
1141 DATA_GENERIC_ENHANCE)) {
1142 f2fs_put_dnode(&dn);
1143 return -EFSCORRUPTED;
1144 }
1145
1146 if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) {
1147
1148 if (f2fs_lfs_mode(sbi)) {
1149 f2fs_put_dnode(&dn);
1150 return -EOPNOTSUPP;
1151 }
1152
1153 /* do not invalidate this block address */
1154 f2fs_update_data_blkaddr(&dn, NULL_ADDR);
1155 *do_replace = 1;
1156 }
1157 }
1158 f2fs_put_dnode(&dn);
1159next:
1160 len -= done;
1161 off += done;
1162 if (len)
1163 goto next_dnode;
1164 return 0;
1165}
1166
1167static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr,
1168 int *do_replace, pgoff_t off, int len)
1169{
1170 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1171 struct dnode_of_data dn;
1172 int ret, i;
1173
1174 for (i = 0; i < len; i++, do_replace++, blkaddr++) {
1175 if (*do_replace == 0)
1176 continue;
1177
1178 set_new_dnode(&dn, inode, NULL, NULL, 0);
1179 ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA);
1180 if (ret) {
1181 dec_valid_block_count(sbi, inode, 1);
1182 f2fs_invalidate_blocks(sbi, *blkaddr);
1183 } else {
1184 f2fs_update_data_blkaddr(&dn, *blkaddr);
1185 }
1186 f2fs_put_dnode(&dn);
1187 }
1188 return 0;
1189}
1190
1191static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode,
1192 block_t *blkaddr, int *do_replace,
1193 pgoff_t src, pgoff_t dst, pgoff_t len, bool full)
1194{
1195 struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode);
1196 pgoff_t i = 0;
1197 int ret;
1198
1199 while (i < len) {
1200 if (blkaddr[i] == NULL_ADDR && !full) {
1201 i++;
1202 continue;
1203 }
1204
1205 if (do_replace[i] || blkaddr[i] == NULL_ADDR) {
1206 struct dnode_of_data dn;
1207 struct node_info ni;
1208 size_t new_size;
1209 pgoff_t ilen;
1210
1211 set_new_dnode(&dn, dst_inode, NULL, NULL, 0);
1212 ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE);
1213 if (ret)
1214 return ret;
1215
1216 ret = f2fs_get_node_info(sbi, dn.nid, &ni);
1217 if (ret) {
1218 f2fs_put_dnode(&dn);
1219 return ret;
1220 }
1221
1222 ilen = min((pgoff_t)
1223 ADDRS_PER_PAGE(dn.node_page, dst_inode) -
1224 dn.ofs_in_node, len - i);
1225 do {
1226 dn.data_blkaddr = f2fs_data_blkaddr(&dn);
1227 f2fs_truncate_data_blocks_range(&dn, 1);
1228
1229 if (do_replace[i]) {
1230 f2fs_i_blocks_write(src_inode,
1231 1, false, false);
1232 f2fs_i_blocks_write(dst_inode,
1233 1, true, false);
1234 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
1235 blkaddr[i], ni.version, true, false);
1236
1237 do_replace[i] = 0;
1238 }
1239 dn.ofs_in_node++;
1240 i++;
1241 new_size = (loff_t)(dst + i) << PAGE_SHIFT;
1242 if (dst_inode->i_size < new_size)
1243 f2fs_i_size_write(dst_inode, new_size);
1244 } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR));
1245
1246 f2fs_put_dnode(&dn);
1247 } else {
1248 struct page *psrc, *pdst;
1249
1250 psrc = f2fs_get_lock_data_page(src_inode,
1251 src + i, true);
1252 if (IS_ERR(psrc))
1253 return PTR_ERR(psrc);
1254 pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i,
1255 true);
1256 if (IS_ERR(pdst)) {
1257 f2fs_put_page(psrc, 1);
1258 return PTR_ERR(pdst);
1259 }
1260 f2fs_copy_page(psrc, pdst);
1261 set_page_dirty(pdst);
1262 f2fs_put_page(pdst, 1);
1263 f2fs_put_page(psrc, 1);
1264
1265 ret = f2fs_truncate_hole(src_inode,
1266 src + i, src + i + 1);
1267 if (ret)
1268 return ret;
1269 i++;
1270 }
1271 }
1272 return 0;
1273}
1274
1275static int __exchange_data_block(struct inode *src_inode,
1276 struct inode *dst_inode, pgoff_t src, pgoff_t dst,
1277 pgoff_t len, bool full)
1278{
1279 block_t *src_blkaddr;
1280 int *do_replace;
1281 pgoff_t olen;
1282 int ret;
1283
1284 while (len) {
1285 olen = min((pgoff_t)4 * ADDRS_PER_BLOCK(src_inode), len);
1286
1287 src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1288 array_size(olen, sizeof(block_t)),
1289 GFP_NOFS);
1290 if (!src_blkaddr)
1291 return -ENOMEM;
1292
1293 do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1294 array_size(olen, sizeof(int)),
1295 GFP_NOFS);
1296 if (!do_replace) {
1297 kvfree(src_blkaddr);
1298 return -ENOMEM;
1299 }
1300
1301 ret = __read_out_blkaddrs(src_inode, src_blkaddr,
1302 do_replace, src, olen);
1303 if (ret)
1304 goto roll_back;
1305
1306 ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr,
1307 do_replace, src, dst, olen, full);
1308 if (ret)
1309 goto roll_back;
1310
1311 src += olen;
1312 dst += olen;
1313 len -= olen;
1314
1315 kvfree(src_blkaddr);
1316 kvfree(do_replace);
1317 }
1318 return 0;
1319
1320roll_back:
1321 __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen);
1322 kvfree(src_blkaddr);
1323 kvfree(do_replace);
1324 return ret;
1325}
1326
1327static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len)
1328{
1329 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1330 pgoff_t nrpages = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
1331 pgoff_t start = offset >> PAGE_SHIFT;
1332 pgoff_t end = (offset + len) >> PAGE_SHIFT;
1333 int ret;
1334
1335 f2fs_balance_fs(sbi, true);
1336
1337 /* avoid gc operation during block exchange */
1338 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1339 down_write(&F2FS_I(inode)->i_mmap_sem);
1340
1341 f2fs_lock_op(sbi);
1342 f2fs_drop_extent_tree(inode);
1343 truncate_pagecache(inode, offset);
1344 ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
1345 f2fs_unlock_op(sbi);
1346
1347 up_write(&F2FS_I(inode)->i_mmap_sem);
1348 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1349 return ret;
1350}
1351
1352static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
1353{
1354 loff_t new_size;
1355 int ret;
1356
1357 if (offset + len >= i_size_read(inode))
1358 return -EINVAL;
1359
1360 /* collapse range should be aligned to block size of f2fs. */
1361 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1362 return -EINVAL;
1363
1364 ret = f2fs_convert_inline_inode(inode);
1365 if (ret)
1366 return ret;
1367
1368 /* write out all dirty pages from offset */
1369 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1370 if (ret)
1371 return ret;
1372
1373 ret = f2fs_do_collapse(inode, offset, len);
1374 if (ret)
1375 return ret;
1376
1377 /* write out all moved pages, if possible */
1378 down_write(&F2FS_I(inode)->i_mmap_sem);
1379 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1380 truncate_pagecache(inode, offset);
1381
1382 new_size = i_size_read(inode) - len;
1383 ret = f2fs_truncate_blocks(inode, new_size, true);
1384 up_write(&F2FS_I(inode)->i_mmap_sem);
1385 if (!ret)
1386 f2fs_i_size_write(inode, new_size);
1387 return ret;
1388}
1389
1390static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start,
1391 pgoff_t end)
1392{
1393 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1394 pgoff_t index = start;
1395 unsigned int ofs_in_node = dn->ofs_in_node;
1396 blkcnt_t count = 0;
1397 int ret;
1398
1399 for (; index < end; index++, dn->ofs_in_node++) {
1400 if (f2fs_data_blkaddr(dn) == NULL_ADDR)
1401 count++;
1402 }
1403
1404 dn->ofs_in_node = ofs_in_node;
1405 ret = f2fs_reserve_new_blocks(dn, count);
1406 if (ret)
1407 return ret;
1408
1409 dn->ofs_in_node = ofs_in_node;
1410 for (index = start; index < end; index++, dn->ofs_in_node++) {
1411 dn->data_blkaddr = f2fs_data_blkaddr(dn);
1412 /*
1413 * f2fs_reserve_new_blocks will not guarantee entire block
1414 * allocation.
1415 */
1416 if (dn->data_blkaddr == NULL_ADDR) {
1417 ret = -ENOSPC;
1418 break;
1419 }
1420 if (dn->data_blkaddr != NEW_ADDR) {
1421 f2fs_invalidate_blocks(sbi, dn->data_blkaddr);
1422 dn->data_blkaddr = NEW_ADDR;
1423 f2fs_set_data_blkaddr(dn);
1424 }
1425 }
1426
1427 f2fs_update_extent_cache_range(dn, start, 0, index - start);
1428
1429 return ret;
1430}
1431
1432static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
1433 int mode)
1434{
1435 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1436 struct address_space *mapping = inode->i_mapping;
1437 pgoff_t index, pg_start, pg_end;
1438 loff_t new_size = i_size_read(inode);
1439 loff_t off_start, off_end;
1440 int ret = 0;
1441
1442 ret = inode_newsize_ok(inode, (len + offset));
1443 if (ret)
1444 return ret;
1445
1446 ret = f2fs_convert_inline_inode(inode);
1447 if (ret)
1448 return ret;
1449
1450 ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
1451 if (ret)
1452 return ret;
1453
1454 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1455 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
1456
1457 off_start = offset & (PAGE_SIZE - 1);
1458 off_end = (offset + len) & (PAGE_SIZE - 1);
1459
1460 if (pg_start == pg_end) {
1461 ret = fill_zero(inode, pg_start, off_start,
1462 off_end - off_start);
1463 if (ret)
1464 return ret;
1465
1466 new_size = max_t(loff_t, new_size, offset + len);
1467 } else {
1468 if (off_start) {
1469 ret = fill_zero(inode, pg_start++, off_start,
1470 PAGE_SIZE - off_start);
1471 if (ret)
1472 return ret;
1473
1474 new_size = max_t(loff_t, new_size,
1475 (loff_t)pg_start << PAGE_SHIFT);
1476 }
1477
1478 for (index = pg_start; index < pg_end;) {
1479 struct dnode_of_data dn;
1480 unsigned int end_offset;
1481 pgoff_t end;
1482
1483 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1484 down_write(&F2FS_I(inode)->i_mmap_sem);
1485
1486 truncate_pagecache_range(inode,
1487 (loff_t)index << PAGE_SHIFT,
1488 ((loff_t)pg_end << PAGE_SHIFT) - 1);
1489
1490 f2fs_lock_op(sbi);
1491
1492 set_new_dnode(&dn, inode, NULL, NULL, 0);
1493 ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE);
1494 if (ret) {
1495 f2fs_unlock_op(sbi);
1496 up_write(&F2FS_I(inode)->i_mmap_sem);
1497 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1498 goto out;
1499 }
1500
1501 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1502 end = min(pg_end, end_offset - dn.ofs_in_node + index);
1503
1504 ret = f2fs_do_zero_range(&dn, index, end);
1505 f2fs_put_dnode(&dn);
1506
1507 f2fs_unlock_op(sbi);
1508 up_write(&F2FS_I(inode)->i_mmap_sem);
1509 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1510
1511 f2fs_balance_fs(sbi, dn.node_changed);
1512
1513 if (ret)
1514 goto out;
1515
1516 index = end;
1517 new_size = max_t(loff_t, new_size,
1518 (loff_t)index << PAGE_SHIFT);
1519 }
1520
1521 if (off_end) {
1522 ret = fill_zero(inode, pg_end, 0, off_end);
1523 if (ret)
1524 goto out;
1525
1526 new_size = max_t(loff_t, new_size, offset + len);
1527 }
1528 }
1529
1530out:
1531 if (new_size > i_size_read(inode)) {
1532 if (mode & FALLOC_FL_KEEP_SIZE)
1533 file_set_keep_isize(inode);
1534 else
1535 f2fs_i_size_write(inode, new_size);
1536 }
1537 return ret;
1538}
1539
1540static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
1541{
1542 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1543 pgoff_t nr, pg_start, pg_end, delta, idx;
1544 loff_t new_size;
1545 int ret = 0;
1546
1547 new_size = i_size_read(inode) + len;
1548 ret = inode_newsize_ok(inode, new_size);
1549 if (ret)
1550 return ret;
1551
1552 if (offset >= i_size_read(inode))
1553 return -EINVAL;
1554
1555 /* insert range should be aligned to block size of f2fs. */
1556 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1557 return -EINVAL;
1558
1559 ret = f2fs_convert_inline_inode(inode);
1560 if (ret)
1561 return ret;
1562
1563 f2fs_balance_fs(sbi, true);
1564
1565 down_write(&F2FS_I(inode)->i_mmap_sem);
1566 ret = f2fs_truncate_blocks(inode, i_size_read(inode), true);
1567 up_write(&F2FS_I(inode)->i_mmap_sem);
1568 if (ret)
1569 return ret;
1570
1571 /* write out all dirty pages from offset */
1572 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1573 if (ret)
1574 return ret;
1575
1576 pg_start = offset >> PAGE_SHIFT;
1577 pg_end = (offset + len) >> PAGE_SHIFT;
1578 delta = pg_end - pg_start;
1579 idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
1580
1581 /* avoid gc operation during block exchange */
1582 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1583 down_write(&F2FS_I(inode)->i_mmap_sem);
1584 truncate_pagecache(inode, offset);
1585
1586 while (!ret && idx > pg_start) {
1587 nr = idx - pg_start;
1588 if (nr > delta)
1589 nr = delta;
1590 idx -= nr;
1591
1592 f2fs_lock_op(sbi);
1593 f2fs_drop_extent_tree(inode);
1594
1595 ret = __exchange_data_block(inode, inode, idx,
1596 idx + delta, nr, false);
1597 f2fs_unlock_op(sbi);
1598 }
1599 up_write(&F2FS_I(inode)->i_mmap_sem);
1600 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1601
1602 /* write out all moved pages, if possible */
1603 down_write(&F2FS_I(inode)->i_mmap_sem);
1604 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1605 truncate_pagecache(inode, offset);
1606 up_write(&F2FS_I(inode)->i_mmap_sem);
1607
1608 if (!ret)
1609 f2fs_i_size_write(inode, new_size);
1610 return ret;
1611}
1612
1613static int expand_inode_data(struct inode *inode, loff_t offset,
1614 loff_t len, int mode)
1615{
1616 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1617 struct f2fs_map_blocks map = { .m_next_pgofs = NULL,
1618 .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE,
1619 .m_may_create = true };
1620 pgoff_t pg_start, pg_end;
1621 loff_t new_size = i_size_read(inode);
1622 loff_t off_end;
1623 block_t expanded = 0;
1624 int err;
1625
1626 err = inode_newsize_ok(inode, (len + offset));
1627 if (err)
1628 return err;
1629
1630 err = f2fs_convert_inline_inode(inode);
1631 if (err)
1632 return err;
1633
1634 f2fs_balance_fs(sbi, true);
1635
1636 pg_start = ((unsigned long long)offset) >> PAGE_SHIFT;
1637 pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT;
1638 off_end = (offset + len) & (PAGE_SIZE - 1);
1639
1640 map.m_lblk = pg_start;
1641 map.m_len = pg_end - pg_start;
1642 if (off_end)
1643 map.m_len++;
1644
1645 if (!map.m_len)
1646 return 0;
1647
1648 if (f2fs_is_pinned_file(inode)) {
1649 block_t sec_blks = BLKS_PER_SEC(sbi);
1650 block_t sec_len = roundup(map.m_len, sec_blks);
1651
1652 map.m_len = sec_blks;
1653next_alloc:
1654 if (has_not_enough_free_secs(sbi, 0,
1655 GET_SEC_FROM_SEG(sbi, overprovision_segments(sbi)))) {
1656 down_write(&sbi->gc_lock);
1657 err = f2fs_gc(sbi, true, false, false, NULL_SEGNO);
1658 if (err && err != -ENODATA && err != -EAGAIN)
1659 goto out_err;
1660 }
1661
1662 down_write(&sbi->pin_sem);
1663
1664 f2fs_lock_op(sbi);
1665 f2fs_allocate_new_section(sbi, CURSEG_COLD_DATA_PINNED, false);
1666 f2fs_unlock_op(sbi);
1667
1668 map.m_seg_type = CURSEG_COLD_DATA_PINNED;
1669 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_DIO);
1670
1671 up_write(&sbi->pin_sem);
1672
1673 expanded += map.m_len;
1674 sec_len -= map.m_len;
1675 map.m_lblk += map.m_len;
1676 if (!err && sec_len)
1677 goto next_alloc;
1678
1679 map.m_len = expanded;
1680 } else {
1681 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
1682 expanded = map.m_len;
1683 }
1684out_err:
1685 if (err) {
1686 pgoff_t last_off;
1687
1688 if (!expanded)
1689 return err;
1690
1691 last_off = pg_start + expanded - 1;
1692
1693 /* update new size to the failed position */
1694 new_size = (last_off == pg_end) ? offset + len :
1695 (loff_t)(last_off + 1) << PAGE_SHIFT;
1696 } else {
1697 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
1698 }
1699
1700 if (new_size > i_size_read(inode)) {
1701 if (mode & FALLOC_FL_KEEP_SIZE)
1702 file_set_keep_isize(inode);
1703 else
1704 f2fs_i_size_write(inode, new_size);
1705 }
1706
1707 return err;
1708}
1709
1710static long f2fs_fallocate(struct file *file, int mode,
1711 loff_t offset, loff_t len)
1712{
1713 struct inode *inode = file_inode(file);
1714 long ret = 0;
1715
1716 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
1717 return -EIO;
1718 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode)))
1719 return -ENOSPC;
1720 if (!f2fs_is_compress_backend_ready(inode))
1721 return -EOPNOTSUPP;
1722
1723 /* f2fs only support ->fallocate for regular file */
1724 if (!S_ISREG(inode->i_mode))
1725 return -EINVAL;
1726
1727 if (IS_ENCRYPTED(inode) &&
1728 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
1729 return -EOPNOTSUPP;
1730
1731 if (f2fs_compressed_file(inode) &&
1732 (mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE |
1733 FALLOC_FL_ZERO_RANGE | FALLOC_FL_INSERT_RANGE)))
1734 return -EOPNOTSUPP;
1735
1736 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
1737 FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1738 FALLOC_FL_INSERT_RANGE))
1739 return -EOPNOTSUPP;
1740
1741 inode_lock(inode);
1742
1743 if (mode & FALLOC_FL_PUNCH_HOLE) {
1744 if (offset >= inode->i_size)
1745 goto out;
1746
1747 ret = punch_hole(inode, offset, len);
1748 } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1749 ret = f2fs_collapse_range(inode, offset, len);
1750 } else if (mode & FALLOC_FL_ZERO_RANGE) {
1751 ret = f2fs_zero_range(inode, offset, len, mode);
1752 } else if (mode & FALLOC_FL_INSERT_RANGE) {
1753 ret = f2fs_insert_range(inode, offset, len);
1754 } else {
1755 ret = expand_inode_data(inode, offset, len, mode);
1756 }
1757
1758 if (!ret) {
1759 inode->i_mtime = inode->i_ctime = current_time(inode);
1760 f2fs_mark_inode_dirty_sync(inode, false);
1761 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1762 }
1763
1764out:
1765 inode_unlock(inode);
1766
1767 trace_f2fs_fallocate(inode, mode, offset, len, ret);
1768 return ret;
1769}
1770
1771static int f2fs_release_file(struct inode *inode, struct file *filp)
1772{
1773 /*
1774 * f2fs_relase_file is called at every close calls. So we should
1775 * not drop any inmemory pages by close called by other process.
1776 */
1777 if (!(filp->f_mode & FMODE_WRITE) ||
1778 atomic_read(&inode->i_writecount) != 1)
1779 return 0;
1780
1781 /* some remained atomic pages should discarded */
1782 if (f2fs_is_atomic_file(inode))
1783 f2fs_drop_inmem_pages(inode);
1784 if (f2fs_is_volatile_file(inode)) {
1785 set_inode_flag(inode, FI_DROP_CACHE);
1786 filemap_fdatawrite(inode->i_mapping);
1787 clear_inode_flag(inode, FI_DROP_CACHE);
1788 clear_inode_flag(inode, FI_VOLATILE_FILE);
1789 stat_dec_volatile_write(inode);
1790 }
1791 return 0;
1792}
1793
1794static int f2fs_file_flush(struct file *file, fl_owner_t id)
1795{
1796 struct inode *inode = file_inode(file);
1797
1798 /*
1799 * If the process doing a transaction is crashed, we should do
1800 * roll-back. Otherwise, other reader/write can see corrupted database
1801 * until all the writers close its file. Since this should be done
1802 * before dropping file lock, it needs to do in ->flush.
1803 */
1804 if (f2fs_is_atomic_file(inode) &&
1805 F2FS_I(inode)->inmem_task == current)
1806 f2fs_drop_inmem_pages(inode);
1807 return 0;
1808}
1809
1810static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask)
1811{
1812 struct f2fs_inode_info *fi = F2FS_I(inode);
1813 u32 masked_flags = fi->i_flags & mask;
1814
1815 /* mask can be shrunk by flags_valid selector */
1816 iflags &= mask;
1817
1818 /* Is it quota file? Do not allow user to mess with it */
1819 if (IS_NOQUOTA(inode))
1820 return -EPERM;
1821
1822 if ((iflags ^ masked_flags) & F2FS_CASEFOLD_FL) {
1823 if (!f2fs_sb_has_casefold(F2FS_I_SB(inode)))
1824 return -EOPNOTSUPP;
1825 if (!f2fs_empty_dir(inode))
1826 return -ENOTEMPTY;
1827 }
1828
1829 if (iflags & (F2FS_COMPR_FL | F2FS_NOCOMP_FL)) {
1830 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
1831 return -EOPNOTSUPP;
1832 if ((iflags & F2FS_COMPR_FL) && (iflags & F2FS_NOCOMP_FL))
1833 return -EINVAL;
1834 }
1835
1836 if ((iflags ^ masked_flags) & F2FS_COMPR_FL) {
1837 if (masked_flags & F2FS_COMPR_FL) {
1838 if (!f2fs_disable_compressed_file(inode))
1839 return -EINVAL;
1840 }
1841 if (iflags & F2FS_NOCOMP_FL)
1842 return -EINVAL;
1843 if (iflags & F2FS_COMPR_FL) {
1844 if (!f2fs_may_compress(inode))
1845 return -EINVAL;
1846 if (S_ISREG(inode->i_mode) && inode->i_size)
1847 return -EINVAL;
1848
1849 set_compress_context(inode);
1850 }
1851 }
1852 if ((iflags ^ masked_flags) & F2FS_NOCOMP_FL) {
1853 if (masked_flags & F2FS_COMPR_FL)
1854 return -EINVAL;
1855 }
1856
1857 fi->i_flags = iflags | (fi->i_flags & ~mask);
1858 f2fs_bug_on(F2FS_I_SB(inode), (fi->i_flags & F2FS_COMPR_FL) &&
1859 (fi->i_flags & F2FS_NOCOMP_FL));
1860
1861 if (fi->i_flags & F2FS_PROJINHERIT_FL)
1862 set_inode_flag(inode, FI_PROJ_INHERIT);
1863 else
1864 clear_inode_flag(inode, FI_PROJ_INHERIT);
1865
1866 inode->i_ctime = current_time(inode);
1867 f2fs_set_inode_flags(inode);
1868 f2fs_mark_inode_dirty_sync(inode, true);
1869 return 0;
1870}
1871
1872/* FS_IOC_[GS]ETFLAGS and FS_IOC_FS[GS]ETXATTR support */
1873
1874/*
1875 * To make a new on-disk f2fs i_flag gettable via FS_IOC_GETFLAGS, add an entry
1876 * for it to f2fs_fsflags_map[], and add its FS_*_FL equivalent to
1877 * F2FS_GETTABLE_FS_FL. To also make it settable via FS_IOC_SETFLAGS, also add
1878 * its FS_*_FL equivalent to F2FS_SETTABLE_FS_FL.
1879 *
1880 * Translating flags to fsx_flags value used by FS_IOC_FSGETXATTR and
1881 * FS_IOC_FSSETXATTR is done by the VFS.
1882 */
1883
1884static const struct {
1885 u32 iflag;
1886 u32 fsflag;
1887} f2fs_fsflags_map[] = {
1888 { F2FS_COMPR_FL, FS_COMPR_FL },
1889 { F2FS_SYNC_FL, FS_SYNC_FL },
1890 { F2FS_IMMUTABLE_FL, FS_IMMUTABLE_FL },
1891 { F2FS_APPEND_FL, FS_APPEND_FL },
1892 { F2FS_NODUMP_FL, FS_NODUMP_FL },
1893 { F2FS_NOATIME_FL, FS_NOATIME_FL },
1894 { F2FS_NOCOMP_FL, FS_NOCOMP_FL },
1895 { F2FS_INDEX_FL, FS_INDEX_FL },
1896 { F2FS_DIRSYNC_FL, FS_DIRSYNC_FL },
1897 { F2FS_PROJINHERIT_FL, FS_PROJINHERIT_FL },
1898 { F2FS_CASEFOLD_FL, FS_CASEFOLD_FL },
1899};
1900
1901#define F2FS_GETTABLE_FS_FL ( \
1902 FS_COMPR_FL | \
1903 FS_SYNC_FL | \
1904 FS_IMMUTABLE_FL | \
1905 FS_APPEND_FL | \
1906 FS_NODUMP_FL | \
1907 FS_NOATIME_FL | \
1908 FS_NOCOMP_FL | \
1909 FS_INDEX_FL | \
1910 FS_DIRSYNC_FL | \
1911 FS_PROJINHERIT_FL | \
1912 FS_ENCRYPT_FL | \
1913 FS_INLINE_DATA_FL | \
1914 FS_NOCOW_FL | \
1915 FS_VERITY_FL | \
1916 FS_CASEFOLD_FL)
1917
1918#define F2FS_SETTABLE_FS_FL ( \
1919 FS_COMPR_FL | \
1920 FS_SYNC_FL | \
1921 FS_IMMUTABLE_FL | \
1922 FS_APPEND_FL | \
1923 FS_NODUMP_FL | \
1924 FS_NOATIME_FL | \
1925 FS_NOCOMP_FL | \
1926 FS_DIRSYNC_FL | \
1927 FS_PROJINHERIT_FL | \
1928 FS_CASEFOLD_FL)
1929
1930/* Convert f2fs on-disk i_flags to FS_IOC_{GET,SET}FLAGS flags */
1931static inline u32 f2fs_iflags_to_fsflags(u32 iflags)
1932{
1933 u32 fsflags = 0;
1934 int i;
1935
1936 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1937 if (iflags & f2fs_fsflags_map[i].iflag)
1938 fsflags |= f2fs_fsflags_map[i].fsflag;
1939
1940 return fsflags;
1941}
1942
1943/* Convert FS_IOC_{GET,SET}FLAGS flags to f2fs on-disk i_flags */
1944static inline u32 f2fs_fsflags_to_iflags(u32 fsflags)
1945{
1946 u32 iflags = 0;
1947 int i;
1948
1949 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1950 if (fsflags & f2fs_fsflags_map[i].fsflag)
1951 iflags |= f2fs_fsflags_map[i].iflag;
1952
1953 return iflags;
1954}
1955
1956static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
1957{
1958 struct inode *inode = file_inode(filp);
1959
1960 return put_user(inode->i_generation, (int __user *)arg);
1961}
1962
1963static int f2fs_ioc_start_atomic_write(struct file *filp)
1964{
1965 struct inode *inode = file_inode(filp);
1966 struct f2fs_inode_info *fi = F2FS_I(inode);
1967 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1968 int ret;
1969
1970 if (!inode_owner_or_capable(&init_user_ns, inode))
1971 return -EACCES;
1972
1973 if (!S_ISREG(inode->i_mode))
1974 return -EINVAL;
1975
1976 if (filp->f_flags & O_DIRECT)
1977 return -EINVAL;
1978
1979 ret = mnt_want_write_file(filp);
1980 if (ret)
1981 return ret;
1982
1983 inode_lock(inode);
1984
1985 f2fs_disable_compressed_file(inode);
1986
1987 if (f2fs_is_atomic_file(inode)) {
1988 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST))
1989 ret = -EINVAL;
1990 goto out;
1991 }
1992
1993 ret = f2fs_convert_inline_inode(inode);
1994 if (ret)
1995 goto out;
1996
1997 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1998
1999 /*
2000 * Should wait end_io to count F2FS_WB_CP_DATA correctly by
2001 * f2fs_is_atomic_file.
2002 */
2003 if (get_dirty_pages(inode))
2004 f2fs_warn(F2FS_I_SB(inode), "Unexpected flush for atomic writes: ino=%lu, npages=%u",
2005 inode->i_ino, get_dirty_pages(inode));
2006 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
2007 if (ret) {
2008 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
2009 goto out;
2010 }
2011
2012 spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
2013 if (list_empty(&fi->inmem_ilist))
2014 list_add_tail(&fi->inmem_ilist, &sbi->inode_list[ATOMIC_FILE]);
2015 sbi->atomic_files++;
2016 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
2017
2018 /* add inode in inmem_list first and set atomic_file */
2019 set_inode_flag(inode, FI_ATOMIC_FILE);
2020 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2021 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
2022
2023 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2024 F2FS_I(inode)->inmem_task = current;
2025 stat_update_max_atomic_write(inode);
2026out:
2027 inode_unlock(inode);
2028 mnt_drop_write_file(filp);
2029 return ret;
2030}
2031
2032static int f2fs_ioc_commit_atomic_write(struct file *filp)
2033{
2034 struct inode *inode = file_inode(filp);
2035 int ret;
2036
2037 if (!inode_owner_or_capable(&init_user_ns, inode))
2038 return -EACCES;
2039
2040 ret = mnt_want_write_file(filp);
2041 if (ret)
2042 return ret;
2043
2044 f2fs_balance_fs(F2FS_I_SB(inode), true);
2045
2046 inode_lock(inode);
2047
2048 if (f2fs_is_volatile_file(inode)) {
2049 ret = -EINVAL;
2050 goto err_out;
2051 }
2052
2053 if (f2fs_is_atomic_file(inode)) {
2054 ret = f2fs_commit_inmem_pages(inode);
2055 if (ret)
2056 goto err_out;
2057
2058 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
2059 if (!ret)
2060 f2fs_drop_inmem_pages(inode);
2061 } else {
2062 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false);
2063 }
2064err_out:
2065 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) {
2066 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2067 ret = -EINVAL;
2068 }
2069 inode_unlock(inode);
2070 mnt_drop_write_file(filp);
2071 return ret;
2072}
2073
2074static int f2fs_ioc_start_volatile_write(struct file *filp)
2075{
2076 struct inode *inode = file_inode(filp);
2077 int ret;
2078
2079 if (!inode_owner_or_capable(&init_user_ns, inode))
2080 return -EACCES;
2081
2082 if (!S_ISREG(inode->i_mode))
2083 return -EINVAL;
2084
2085 ret = mnt_want_write_file(filp);
2086 if (ret)
2087 return ret;
2088
2089 inode_lock(inode);
2090
2091 if (f2fs_is_volatile_file(inode))
2092 goto out;
2093
2094 ret = f2fs_convert_inline_inode(inode);
2095 if (ret)
2096 goto out;
2097
2098 stat_inc_volatile_write(inode);
2099 stat_update_max_volatile_write(inode);
2100
2101 set_inode_flag(inode, FI_VOLATILE_FILE);
2102 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2103out:
2104 inode_unlock(inode);
2105 mnt_drop_write_file(filp);
2106 return ret;
2107}
2108
2109static int f2fs_ioc_release_volatile_write(struct file *filp)
2110{
2111 struct inode *inode = file_inode(filp);
2112 int ret;
2113
2114 if (!inode_owner_or_capable(&init_user_ns, inode))
2115 return -EACCES;
2116
2117 ret = mnt_want_write_file(filp);
2118 if (ret)
2119 return ret;
2120
2121 inode_lock(inode);
2122
2123 if (!f2fs_is_volatile_file(inode))
2124 goto out;
2125
2126 if (!f2fs_is_first_block_written(inode)) {
2127 ret = truncate_partial_data_page(inode, 0, true);
2128 goto out;
2129 }
2130
2131 ret = punch_hole(inode, 0, F2FS_BLKSIZE);
2132out:
2133 inode_unlock(inode);
2134 mnt_drop_write_file(filp);
2135 return ret;
2136}
2137
2138static int f2fs_ioc_abort_volatile_write(struct file *filp)
2139{
2140 struct inode *inode = file_inode(filp);
2141 int ret;
2142
2143 if (!inode_owner_or_capable(&init_user_ns, inode))
2144 return -EACCES;
2145
2146 ret = mnt_want_write_file(filp);
2147 if (ret)
2148 return ret;
2149
2150 inode_lock(inode);
2151
2152 if (f2fs_is_atomic_file(inode))
2153 f2fs_drop_inmem_pages(inode);
2154 if (f2fs_is_volatile_file(inode)) {
2155 clear_inode_flag(inode, FI_VOLATILE_FILE);
2156 stat_dec_volatile_write(inode);
2157 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
2158 }
2159
2160 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2161
2162 inode_unlock(inode);
2163
2164 mnt_drop_write_file(filp);
2165 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2166 return ret;
2167}
2168
2169static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
2170{
2171 struct inode *inode = file_inode(filp);
2172 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2173 struct super_block *sb = sbi->sb;
2174 __u32 in;
2175 int ret = 0;
2176
2177 if (!capable(CAP_SYS_ADMIN))
2178 return -EPERM;
2179
2180 if (get_user(in, (__u32 __user *)arg))
2181 return -EFAULT;
2182
2183 if (in != F2FS_GOING_DOWN_FULLSYNC) {
2184 ret = mnt_want_write_file(filp);
2185 if (ret) {
2186 if (ret == -EROFS) {
2187 ret = 0;
2188 f2fs_stop_checkpoint(sbi, false);
2189 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2190 trace_f2fs_shutdown(sbi, in, ret);
2191 }
2192 return ret;
2193 }
2194 }
2195
2196 switch (in) {
2197 case F2FS_GOING_DOWN_FULLSYNC:
2198 ret = freeze_bdev(sb->s_bdev);
2199 if (ret)
2200 goto out;
2201 f2fs_stop_checkpoint(sbi, false);
2202 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2203 thaw_bdev(sb->s_bdev);
2204 break;
2205 case F2FS_GOING_DOWN_METASYNC:
2206 /* do checkpoint only */
2207 ret = f2fs_sync_fs(sb, 1);
2208 if (ret)
2209 goto out;
2210 f2fs_stop_checkpoint(sbi, false);
2211 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2212 break;
2213 case F2FS_GOING_DOWN_NOSYNC:
2214 f2fs_stop_checkpoint(sbi, false);
2215 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2216 break;
2217 case F2FS_GOING_DOWN_METAFLUSH:
2218 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
2219 f2fs_stop_checkpoint(sbi, false);
2220 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2221 break;
2222 case F2FS_GOING_DOWN_NEED_FSCK:
2223 set_sbi_flag(sbi, SBI_NEED_FSCK);
2224 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
2225 set_sbi_flag(sbi, SBI_IS_DIRTY);
2226 /* do checkpoint only */
2227 ret = f2fs_sync_fs(sb, 1);
2228 goto out;
2229 default:
2230 ret = -EINVAL;
2231 goto out;
2232 }
2233
2234 f2fs_stop_gc_thread(sbi);
2235 f2fs_stop_discard_thread(sbi);
2236
2237 f2fs_drop_discard_cmd(sbi);
2238 clear_opt(sbi, DISCARD);
2239
2240 f2fs_update_time(sbi, REQ_TIME);
2241out:
2242 if (in != F2FS_GOING_DOWN_FULLSYNC)
2243 mnt_drop_write_file(filp);
2244
2245 trace_f2fs_shutdown(sbi, in, ret);
2246
2247 return ret;
2248}
2249
2250static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
2251{
2252 struct inode *inode = file_inode(filp);
2253 struct super_block *sb = inode->i_sb;
2254 struct request_queue *q = bdev_get_queue(sb->s_bdev);
2255 struct fstrim_range range;
2256 int ret;
2257
2258 if (!capable(CAP_SYS_ADMIN))
2259 return -EPERM;
2260
2261 if (!f2fs_hw_support_discard(F2FS_SB(sb)))
2262 return -EOPNOTSUPP;
2263
2264 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
2265 sizeof(range)))
2266 return -EFAULT;
2267
2268 ret = mnt_want_write_file(filp);
2269 if (ret)
2270 return ret;
2271
2272 range.minlen = max((unsigned int)range.minlen,
2273 q->limits.discard_granularity);
2274 ret = f2fs_trim_fs(F2FS_SB(sb), &range);
2275 mnt_drop_write_file(filp);
2276 if (ret < 0)
2277 return ret;
2278
2279 if (copy_to_user((struct fstrim_range __user *)arg, &range,
2280 sizeof(range)))
2281 return -EFAULT;
2282 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2283 return 0;
2284}
2285
2286static bool uuid_is_nonzero(__u8 u[16])
2287{
2288 int i;
2289
2290 for (i = 0; i < 16; i++)
2291 if (u[i])
2292 return true;
2293 return false;
2294}
2295
2296static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
2297{
2298 struct inode *inode = file_inode(filp);
2299
2300 if (!f2fs_sb_has_encrypt(F2FS_I_SB(inode)))
2301 return -EOPNOTSUPP;
2302
2303 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2304
2305 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
2306}
2307
2308static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
2309{
2310 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2311 return -EOPNOTSUPP;
2312 return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
2313}
2314
2315static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
2316{
2317 struct inode *inode = file_inode(filp);
2318 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2319 int err;
2320
2321 if (!f2fs_sb_has_encrypt(sbi))
2322 return -EOPNOTSUPP;
2323
2324 err = mnt_want_write_file(filp);
2325 if (err)
2326 return err;
2327
2328 down_write(&sbi->sb_lock);
2329
2330 if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
2331 goto got_it;
2332
2333 /* update superblock with uuid */
2334 generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
2335
2336 err = f2fs_commit_super(sbi, false);
2337 if (err) {
2338 /* undo new data */
2339 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
2340 goto out_err;
2341 }
2342got_it:
2343 if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt,
2344 16))
2345 err = -EFAULT;
2346out_err:
2347 up_write(&sbi->sb_lock);
2348 mnt_drop_write_file(filp);
2349 return err;
2350}
2351
2352static int f2fs_ioc_get_encryption_policy_ex(struct file *filp,
2353 unsigned long arg)
2354{
2355 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2356 return -EOPNOTSUPP;
2357
2358 return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg);
2359}
2360
2361static int f2fs_ioc_add_encryption_key(struct file *filp, unsigned long arg)
2362{
2363 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2364 return -EOPNOTSUPP;
2365
2366 return fscrypt_ioctl_add_key(filp, (void __user *)arg);
2367}
2368
2369static int f2fs_ioc_remove_encryption_key(struct file *filp, unsigned long arg)
2370{
2371 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2372 return -EOPNOTSUPP;
2373
2374 return fscrypt_ioctl_remove_key(filp, (void __user *)arg);
2375}
2376
2377static int f2fs_ioc_remove_encryption_key_all_users(struct file *filp,
2378 unsigned long arg)
2379{
2380 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2381 return -EOPNOTSUPP;
2382
2383 return fscrypt_ioctl_remove_key_all_users(filp, (void __user *)arg);
2384}
2385
2386static int f2fs_ioc_get_encryption_key_status(struct file *filp,
2387 unsigned long arg)
2388{
2389 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2390 return -EOPNOTSUPP;
2391
2392 return fscrypt_ioctl_get_key_status(filp, (void __user *)arg);
2393}
2394
2395static int f2fs_ioc_get_encryption_nonce(struct file *filp, unsigned long arg)
2396{
2397 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2398 return -EOPNOTSUPP;
2399
2400 return fscrypt_ioctl_get_nonce(filp, (void __user *)arg);
2401}
2402
2403static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
2404{
2405 struct inode *inode = file_inode(filp);
2406 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2407 __u32 sync;
2408 int ret;
2409
2410 if (!capable(CAP_SYS_ADMIN))
2411 return -EPERM;
2412
2413 if (get_user(sync, (__u32 __user *)arg))
2414 return -EFAULT;
2415
2416 if (f2fs_readonly(sbi->sb))
2417 return -EROFS;
2418
2419 ret = mnt_want_write_file(filp);
2420 if (ret)
2421 return ret;
2422
2423 if (!sync) {
2424 if (!down_write_trylock(&sbi->gc_lock)) {
2425 ret = -EBUSY;
2426 goto out;
2427 }
2428 } else {
2429 down_write(&sbi->gc_lock);
2430 }
2431
2432 ret = f2fs_gc(sbi, sync, true, false, NULL_SEGNO);
2433out:
2434 mnt_drop_write_file(filp);
2435 return ret;
2436}
2437
2438static int __f2fs_ioc_gc_range(struct file *filp, struct f2fs_gc_range *range)
2439{
2440 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
2441 u64 end;
2442 int ret;
2443
2444 if (!capable(CAP_SYS_ADMIN))
2445 return -EPERM;
2446 if (f2fs_readonly(sbi->sb))
2447 return -EROFS;
2448
2449 end = range->start + range->len;
2450 if (end < range->start || range->start < MAIN_BLKADDR(sbi) ||
2451 end >= MAX_BLKADDR(sbi))
2452 return -EINVAL;
2453
2454 ret = mnt_want_write_file(filp);
2455 if (ret)
2456 return ret;
2457
2458do_more:
2459 if (!range->sync) {
2460 if (!down_write_trylock(&sbi->gc_lock)) {
2461 ret = -EBUSY;
2462 goto out;
2463 }
2464 } else {
2465 down_write(&sbi->gc_lock);
2466 }
2467
2468 ret = f2fs_gc(sbi, range->sync, true, false,
2469 GET_SEGNO(sbi, range->start));
2470 if (ret) {
2471 if (ret == -EBUSY)
2472 ret = -EAGAIN;
2473 goto out;
2474 }
2475 range->start += BLKS_PER_SEC(sbi);
2476 if (range->start <= end)
2477 goto do_more;
2478out:
2479 mnt_drop_write_file(filp);
2480 return ret;
2481}
2482
2483static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
2484{
2485 struct f2fs_gc_range range;
2486
2487 if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
2488 sizeof(range)))
2489 return -EFAULT;
2490 return __f2fs_ioc_gc_range(filp, &range);
2491}
2492
2493static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
2494{
2495 struct inode *inode = file_inode(filp);
2496 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2497 int ret;
2498
2499 if (!capable(CAP_SYS_ADMIN))
2500 return -EPERM;
2501
2502 if (f2fs_readonly(sbi->sb))
2503 return -EROFS;
2504
2505 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
2506 f2fs_info(sbi, "Skipping Checkpoint. Checkpoints currently disabled.");
2507 return -EINVAL;
2508 }
2509
2510 ret = mnt_want_write_file(filp);
2511 if (ret)
2512 return ret;
2513
2514 ret = f2fs_sync_fs(sbi->sb, 1);
2515
2516 mnt_drop_write_file(filp);
2517 return ret;
2518}
2519
2520static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
2521 struct file *filp,
2522 struct f2fs_defragment *range)
2523{
2524 struct inode *inode = file_inode(filp);
2525 struct f2fs_map_blocks map = { .m_next_extent = NULL,
2526 .m_seg_type = NO_CHECK_TYPE,
2527 .m_may_create = false };
2528 struct extent_info ei = {0, 0, 0};
2529 pgoff_t pg_start, pg_end, next_pgofs;
2530 unsigned int blk_per_seg = sbi->blocks_per_seg;
2531 unsigned int total = 0, sec_num;
2532 block_t blk_end = 0;
2533 bool fragmented = false;
2534 int err;
2535
2536 /* if in-place-update policy is enabled, don't waste time here */
2537 if (f2fs_should_update_inplace(inode, NULL))
2538 return -EINVAL;
2539
2540 pg_start = range->start >> PAGE_SHIFT;
2541 pg_end = (range->start + range->len) >> PAGE_SHIFT;
2542
2543 f2fs_balance_fs(sbi, true);
2544
2545 inode_lock(inode);
2546
2547 /* writeback all dirty pages in the range */
2548 err = filemap_write_and_wait_range(inode->i_mapping, range->start,
2549 range->start + range->len - 1);
2550 if (err)
2551 goto out;
2552
2553 /*
2554 * lookup mapping info in extent cache, skip defragmenting if physical
2555 * block addresses are continuous.
2556 */
2557 if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) {
2558 if (ei.fofs + ei.len >= pg_end)
2559 goto out;
2560 }
2561
2562 map.m_lblk = pg_start;
2563 map.m_next_pgofs = &next_pgofs;
2564
2565 /*
2566 * lookup mapping info in dnode page cache, skip defragmenting if all
2567 * physical block addresses are continuous even if there are hole(s)
2568 * in logical blocks.
2569 */
2570 while (map.m_lblk < pg_end) {
2571 map.m_len = pg_end - map.m_lblk;
2572 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
2573 if (err)
2574 goto out;
2575
2576 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
2577 map.m_lblk = next_pgofs;
2578 continue;
2579 }
2580
2581 if (blk_end && blk_end != map.m_pblk)
2582 fragmented = true;
2583
2584 /* record total count of block that we're going to move */
2585 total += map.m_len;
2586
2587 blk_end = map.m_pblk + map.m_len;
2588
2589 map.m_lblk += map.m_len;
2590 }
2591
2592 if (!fragmented) {
2593 total = 0;
2594 goto out;
2595 }
2596
2597 sec_num = DIV_ROUND_UP(total, BLKS_PER_SEC(sbi));
2598
2599 /*
2600 * make sure there are enough free section for LFS allocation, this can
2601 * avoid defragment running in SSR mode when free section are allocated
2602 * intensively
2603 */
2604 if (has_not_enough_free_secs(sbi, 0, sec_num)) {
2605 err = -EAGAIN;
2606 goto out;
2607 }
2608
2609 map.m_lblk = pg_start;
2610 map.m_len = pg_end - pg_start;
2611 total = 0;
2612
2613 while (map.m_lblk < pg_end) {
2614 pgoff_t idx;
2615 int cnt = 0;
2616
2617do_map:
2618 map.m_len = pg_end - map.m_lblk;
2619 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
2620 if (err)
2621 goto clear_out;
2622
2623 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
2624 map.m_lblk = next_pgofs;
2625 goto check;
2626 }
2627
2628 set_inode_flag(inode, FI_DO_DEFRAG);
2629
2630 idx = map.m_lblk;
2631 while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) {
2632 struct page *page;
2633
2634 page = f2fs_get_lock_data_page(inode, idx, true);
2635 if (IS_ERR(page)) {
2636 err = PTR_ERR(page);
2637 goto clear_out;
2638 }
2639
2640 set_page_dirty(page);
2641 f2fs_put_page(page, 1);
2642
2643 idx++;
2644 cnt++;
2645 total++;
2646 }
2647
2648 map.m_lblk = idx;
2649check:
2650 if (map.m_lblk < pg_end && cnt < blk_per_seg)
2651 goto do_map;
2652
2653 clear_inode_flag(inode, FI_DO_DEFRAG);
2654
2655 err = filemap_fdatawrite(inode->i_mapping);
2656 if (err)
2657 goto out;
2658 }
2659clear_out:
2660 clear_inode_flag(inode, FI_DO_DEFRAG);
2661out:
2662 inode_unlock(inode);
2663 if (!err)
2664 range->len = (u64)total << PAGE_SHIFT;
2665 return err;
2666}
2667
2668static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
2669{
2670 struct inode *inode = file_inode(filp);
2671 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2672 struct f2fs_defragment range;
2673 int err;
2674
2675 if (!capable(CAP_SYS_ADMIN))
2676 return -EPERM;
2677
2678 if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode))
2679 return -EINVAL;
2680
2681 if (f2fs_readonly(sbi->sb))
2682 return -EROFS;
2683
2684 if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
2685 sizeof(range)))
2686 return -EFAULT;
2687
2688 /* verify alignment of offset & size */
2689 if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1))
2690 return -EINVAL;
2691
2692 if (unlikely((range.start + range.len) >> PAGE_SHIFT >
2693 max_file_blocks(inode)))
2694 return -EINVAL;
2695
2696 err = mnt_want_write_file(filp);
2697 if (err)
2698 return err;
2699
2700 err = f2fs_defragment_range(sbi, filp, &range);
2701 mnt_drop_write_file(filp);
2702
2703 f2fs_update_time(sbi, REQ_TIME);
2704 if (err < 0)
2705 return err;
2706
2707 if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
2708 sizeof(range)))
2709 return -EFAULT;
2710
2711 return 0;
2712}
2713
2714static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
2715 struct file *file_out, loff_t pos_out, size_t len)
2716{
2717 struct inode *src = file_inode(file_in);
2718 struct inode *dst = file_inode(file_out);
2719 struct f2fs_sb_info *sbi = F2FS_I_SB(src);
2720 size_t olen = len, dst_max_i_size = 0;
2721 size_t dst_osize;
2722 int ret;
2723
2724 if (file_in->f_path.mnt != file_out->f_path.mnt ||
2725 src->i_sb != dst->i_sb)
2726 return -EXDEV;
2727
2728 if (unlikely(f2fs_readonly(src->i_sb)))
2729 return -EROFS;
2730
2731 if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
2732 return -EINVAL;
2733
2734 if (IS_ENCRYPTED(src) || IS_ENCRYPTED(dst))
2735 return -EOPNOTSUPP;
2736
2737 if (pos_out < 0 || pos_in < 0)
2738 return -EINVAL;
2739
2740 if (src == dst) {
2741 if (pos_in == pos_out)
2742 return 0;
2743 if (pos_out > pos_in && pos_out < pos_in + len)
2744 return -EINVAL;
2745 }
2746
2747 inode_lock(src);
2748 if (src != dst) {
2749 ret = -EBUSY;
2750 if (!inode_trylock(dst))
2751 goto out;
2752 }
2753
2754 ret = -EINVAL;
2755 if (pos_in + len > src->i_size || pos_in + len < pos_in)
2756 goto out_unlock;
2757 if (len == 0)
2758 olen = len = src->i_size - pos_in;
2759 if (pos_in + len == src->i_size)
2760 len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in;
2761 if (len == 0) {
2762 ret = 0;
2763 goto out_unlock;
2764 }
2765
2766 dst_osize = dst->i_size;
2767 if (pos_out + olen > dst->i_size)
2768 dst_max_i_size = pos_out + olen;
2769
2770 /* verify the end result is block aligned */
2771 if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) ||
2772 !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) ||
2773 !IS_ALIGNED(pos_out, F2FS_BLKSIZE))
2774 goto out_unlock;
2775
2776 ret = f2fs_convert_inline_inode(src);
2777 if (ret)
2778 goto out_unlock;
2779
2780 ret = f2fs_convert_inline_inode(dst);
2781 if (ret)
2782 goto out_unlock;
2783
2784 /* write out all dirty pages from offset */
2785 ret = filemap_write_and_wait_range(src->i_mapping,
2786 pos_in, pos_in + len);
2787 if (ret)
2788 goto out_unlock;
2789
2790 ret = filemap_write_and_wait_range(dst->i_mapping,
2791 pos_out, pos_out + len);
2792 if (ret)
2793 goto out_unlock;
2794
2795 f2fs_balance_fs(sbi, true);
2796
2797 down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2798 if (src != dst) {
2799 ret = -EBUSY;
2800 if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE]))
2801 goto out_src;
2802 }
2803
2804 f2fs_lock_op(sbi);
2805 ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
2806 pos_out >> F2FS_BLKSIZE_BITS,
2807 len >> F2FS_BLKSIZE_BITS, false);
2808
2809 if (!ret) {
2810 if (dst_max_i_size)
2811 f2fs_i_size_write(dst, dst_max_i_size);
2812 else if (dst_osize != dst->i_size)
2813 f2fs_i_size_write(dst, dst_osize);
2814 }
2815 f2fs_unlock_op(sbi);
2816
2817 if (src != dst)
2818 up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]);
2819out_src:
2820 up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2821out_unlock:
2822 if (src != dst)
2823 inode_unlock(dst);
2824out:
2825 inode_unlock(src);
2826 return ret;
2827}
2828
2829static int __f2fs_ioc_move_range(struct file *filp,
2830 struct f2fs_move_range *range)
2831{
2832 struct fd dst;
2833 int err;
2834
2835 if (!(filp->f_mode & FMODE_READ) ||
2836 !(filp->f_mode & FMODE_WRITE))
2837 return -EBADF;
2838
2839 dst = fdget(range->dst_fd);
2840 if (!dst.file)
2841 return -EBADF;
2842
2843 if (!(dst.file->f_mode & FMODE_WRITE)) {
2844 err = -EBADF;
2845 goto err_out;
2846 }
2847
2848 err = mnt_want_write_file(filp);
2849 if (err)
2850 goto err_out;
2851
2852 err = f2fs_move_file_range(filp, range->pos_in, dst.file,
2853 range->pos_out, range->len);
2854
2855 mnt_drop_write_file(filp);
2856err_out:
2857 fdput(dst);
2858 return err;
2859}
2860
2861static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
2862{
2863 struct f2fs_move_range range;
2864
2865 if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
2866 sizeof(range)))
2867 return -EFAULT;
2868 return __f2fs_ioc_move_range(filp, &range);
2869}
2870
2871static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
2872{
2873 struct inode *inode = file_inode(filp);
2874 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2875 struct sit_info *sm = SIT_I(sbi);
2876 unsigned int start_segno = 0, end_segno = 0;
2877 unsigned int dev_start_segno = 0, dev_end_segno = 0;
2878 struct f2fs_flush_device range;
2879 int ret;
2880
2881 if (!capable(CAP_SYS_ADMIN))
2882 return -EPERM;
2883
2884 if (f2fs_readonly(sbi->sb))
2885 return -EROFS;
2886
2887 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2888 return -EINVAL;
2889
2890 if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg,
2891 sizeof(range)))
2892 return -EFAULT;
2893
2894 if (!f2fs_is_multi_device(sbi) || sbi->s_ndevs - 1 <= range.dev_num ||
2895 __is_large_section(sbi)) {
2896 f2fs_warn(sbi, "Can't flush %u in %d for segs_per_sec %u != 1",
2897 range.dev_num, sbi->s_ndevs, sbi->segs_per_sec);
2898 return -EINVAL;
2899 }
2900
2901 ret = mnt_want_write_file(filp);
2902 if (ret)
2903 return ret;
2904
2905 if (range.dev_num != 0)
2906 dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk);
2907 dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk);
2908
2909 start_segno = sm->last_victim[FLUSH_DEVICE];
2910 if (start_segno < dev_start_segno || start_segno >= dev_end_segno)
2911 start_segno = dev_start_segno;
2912 end_segno = min(start_segno + range.segments, dev_end_segno);
2913
2914 while (start_segno < end_segno) {
2915 if (!down_write_trylock(&sbi->gc_lock)) {
2916 ret = -EBUSY;
2917 goto out;
2918 }
2919 sm->last_victim[GC_CB] = end_segno + 1;
2920 sm->last_victim[GC_GREEDY] = end_segno + 1;
2921 sm->last_victim[ALLOC_NEXT] = end_segno + 1;
2922 ret = f2fs_gc(sbi, true, true, true, start_segno);
2923 if (ret == -EAGAIN)
2924 ret = 0;
2925 else if (ret < 0)
2926 break;
2927 start_segno++;
2928 }
2929out:
2930 mnt_drop_write_file(filp);
2931 return ret;
2932}
2933
2934static int f2fs_ioc_get_features(struct file *filp, unsigned long arg)
2935{
2936 struct inode *inode = file_inode(filp);
2937 u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature);
2938
2939 /* Must validate to set it with SQLite behavior in Android. */
2940 sb_feature |= F2FS_FEATURE_ATOMIC_WRITE;
2941
2942 return put_user(sb_feature, (u32 __user *)arg);
2943}
2944
2945#ifdef CONFIG_QUOTA
2946int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
2947{
2948 struct dquot *transfer_to[MAXQUOTAS] = {};
2949 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2950 struct super_block *sb = sbi->sb;
2951 int err = 0;
2952
2953 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
2954 if (!IS_ERR(transfer_to[PRJQUOTA])) {
2955 err = __dquot_transfer(inode, transfer_to);
2956 if (err)
2957 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2958 dqput(transfer_to[PRJQUOTA]);
2959 }
2960 return err;
2961}
2962
2963static int f2fs_ioc_setproject(struct inode *inode, __u32 projid)
2964{
2965 struct f2fs_inode_info *fi = F2FS_I(inode);
2966 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2967 struct page *ipage;
2968 kprojid_t kprojid;
2969 int err;
2970
2971 if (!f2fs_sb_has_project_quota(sbi)) {
2972 if (projid != F2FS_DEF_PROJID)
2973 return -EOPNOTSUPP;
2974 else
2975 return 0;
2976 }
2977
2978 if (!f2fs_has_extra_attr(inode))
2979 return -EOPNOTSUPP;
2980
2981 kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
2982
2983 if (projid_eq(kprojid, F2FS_I(inode)->i_projid))
2984 return 0;
2985
2986 err = -EPERM;
2987 /* Is it quota file? Do not allow user to mess with it */
2988 if (IS_NOQUOTA(inode))
2989 return err;
2990
2991 ipage = f2fs_get_node_page(sbi, inode->i_ino);
2992 if (IS_ERR(ipage))
2993 return PTR_ERR(ipage);
2994
2995 if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize,
2996 i_projid)) {
2997 err = -EOVERFLOW;
2998 f2fs_put_page(ipage, 1);
2999 return err;
3000 }
3001 f2fs_put_page(ipage, 1);
3002
3003 err = dquot_initialize(inode);
3004 if (err)
3005 return err;
3006
3007 f2fs_lock_op(sbi);
3008 err = f2fs_transfer_project_quota(inode, kprojid);
3009 if (err)
3010 goto out_unlock;
3011
3012 F2FS_I(inode)->i_projid = kprojid;
3013 inode->i_ctime = current_time(inode);
3014 f2fs_mark_inode_dirty_sync(inode, true);
3015out_unlock:
3016 f2fs_unlock_op(sbi);
3017 return err;
3018}
3019#else
3020int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
3021{
3022 return 0;
3023}
3024
3025static int f2fs_ioc_setproject(struct inode *inode, __u32 projid)
3026{
3027 if (projid != F2FS_DEF_PROJID)
3028 return -EOPNOTSUPP;
3029 return 0;
3030}
3031#endif
3032
3033int f2fs_fileattr_get(struct dentry *dentry, struct fileattr *fa)
3034{
3035 struct inode *inode = d_inode(dentry);
3036 struct f2fs_inode_info *fi = F2FS_I(inode);
3037 u32 fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
3038
3039 if (IS_ENCRYPTED(inode))
3040 fsflags |= FS_ENCRYPT_FL;
3041 if (IS_VERITY(inode))
3042 fsflags |= FS_VERITY_FL;
3043 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))
3044 fsflags |= FS_INLINE_DATA_FL;
3045 if (is_inode_flag_set(inode, FI_PIN_FILE))
3046 fsflags |= FS_NOCOW_FL;
3047
3048 fileattr_fill_flags(fa, fsflags & F2FS_GETTABLE_FS_FL);
3049
3050 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)))
3051 fa->fsx_projid = from_kprojid(&init_user_ns, fi->i_projid);
3052
3053 return 0;
3054}
3055
3056int f2fs_fileattr_set(struct user_namespace *mnt_userns,
3057 struct dentry *dentry, struct fileattr *fa)
3058{
3059 struct inode *inode = d_inode(dentry);
3060 u32 fsflags = fa->flags, mask = F2FS_SETTABLE_FS_FL;
3061 u32 iflags;
3062 int err;
3063
3064 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
3065 return -EIO;
3066 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode)))
3067 return -ENOSPC;
3068 if (fsflags & ~F2FS_GETTABLE_FS_FL)
3069 return -EOPNOTSUPP;
3070 fsflags &= F2FS_SETTABLE_FS_FL;
3071 if (!fa->flags_valid)
3072 mask &= FS_COMMON_FL;
3073
3074 iflags = f2fs_fsflags_to_iflags(fsflags);
3075 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
3076 return -EOPNOTSUPP;
3077
3078 err = f2fs_setflags_common(inode, iflags, f2fs_fsflags_to_iflags(mask));
3079 if (!err)
3080 err = f2fs_ioc_setproject(inode, fa->fsx_projid);
3081
3082 return err;
3083}
3084
3085int f2fs_pin_file_control(struct inode *inode, bool inc)
3086{
3087 struct f2fs_inode_info *fi = F2FS_I(inode);
3088 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3089
3090 /* Use i_gc_failures for normal file as a risk signal. */
3091 if (inc)
3092 f2fs_i_gc_failures_write(inode,
3093 fi->i_gc_failures[GC_FAILURE_PIN] + 1);
3094
3095 if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) {
3096 f2fs_warn(sbi, "%s: Enable GC = ino %lx after %x GC trials",
3097 __func__, inode->i_ino,
3098 fi->i_gc_failures[GC_FAILURE_PIN]);
3099 clear_inode_flag(inode, FI_PIN_FILE);
3100 return -EAGAIN;
3101 }
3102 return 0;
3103}
3104
3105static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
3106{
3107 struct inode *inode = file_inode(filp);
3108 __u32 pin;
3109 int ret = 0;
3110
3111 if (get_user(pin, (__u32 __user *)arg))
3112 return -EFAULT;
3113
3114 if (!S_ISREG(inode->i_mode))
3115 return -EINVAL;
3116
3117 if (f2fs_readonly(F2FS_I_SB(inode)->sb))
3118 return -EROFS;
3119
3120 ret = mnt_want_write_file(filp);
3121 if (ret)
3122 return ret;
3123
3124 inode_lock(inode);
3125
3126 if (f2fs_should_update_outplace(inode, NULL)) {
3127 ret = -EINVAL;
3128 goto out;
3129 }
3130
3131 if (!pin) {
3132 clear_inode_flag(inode, FI_PIN_FILE);
3133 f2fs_i_gc_failures_write(inode, 0);
3134 goto done;
3135 }
3136
3137 if (f2fs_pin_file_control(inode, false)) {
3138 ret = -EAGAIN;
3139 goto out;
3140 }
3141
3142 ret = f2fs_convert_inline_inode(inode);
3143 if (ret)
3144 goto out;
3145
3146 if (!f2fs_disable_compressed_file(inode)) {
3147 ret = -EOPNOTSUPP;
3148 goto out;
3149 }
3150
3151 set_inode_flag(inode, FI_PIN_FILE);
3152 ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
3153done:
3154 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3155out:
3156 inode_unlock(inode);
3157 mnt_drop_write_file(filp);
3158 return ret;
3159}
3160
3161static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg)
3162{
3163 struct inode *inode = file_inode(filp);
3164 __u32 pin = 0;
3165
3166 if (is_inode_flag_set(inode, FI_PIN_FILE))
3167 pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
3168 return put_user(pin, (u32 __user *)arg);
3169}
3170
3171int f2fs_precache_extents(struct inode *inode)
3172{
3173 struct f2fs_inode_info *fi = F2FS_I(inode);
3174 struct f2fs_map_blocks map;
3175 pgoff_t m_next_extent;
3176 loff_t end;
3177 int err;
3178
3179 if (is_inode_flag_set(inode, FI_NO_EXTENT))
3180 return -EOPNOTSUPP;
3181
3182 map.m_lblk = 0;
3183 map.m_next_pgofs = NULL;
3184 map.m_next_extent = &m_next_extent;
3185 map.m_seg_type = NO_CHECK_TYPE;
3186 map.m_may_create = false;
3187 end = max_file_blocks(inode);
3188
3189 while (map.m_lblk < end) {
3190 map.m_len = end - map.m_lblk;
3191
3192 down_write(&fi->i_gc_rwsem[WRITE]);
3193 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE);
3194 up_write(&fi->i_gc_rwsem[WRITE]);
3195 if (err)
3196 return err;
3197
3198 map.m_lblk = m_next_extent;
3199 }
3200
3201 return 0;
3202}
3203
3204static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg)
3205{
3206 return f2fs_precache_extents(file_inode(filp));
3207}
3208
3209static int f2fs_ioc_resize_fs(struct file *filp, unsigned long arg)
3210{
3211 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
3212 __u64 block_count;
3213
3214 if (!capable(CAP_SYS_ADMIN))
3215 return -EPERM;
3216
3217 if (f2fs_readonly(sbi->sb))
3218 return -EROFS;
3219
3220 if (copy_from_user(&block_count, (void __user *)arg,
3221 sizeof(block_count)))
3222 return -EFAULT;
3223
3224 return f2fs_resize_fs(sbi, block_count);
3225}
3226
3227static int f2fs_ioc_enable_verity(struct file *filp, unsigned long arg)
3228{
3229 struct inode *inode = file_inode(filp);
3230
3231 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3232
3233 if (!f2fs_sb_has_verity(F2FS_I_SB(inode))) {
3234 f2fs_warn(F2FS_I_SB(inode),
3235 "Can't enable fs-verity on inode %lu: the verity feature is not enabled on this filesystem",
3236 inode->i_ino);
3237 return -EOPNOTSUPP;
3238 }
3239
3240 return fsverity_ioctl_enable(filp, (const void __user *)arg);
3241}
3242
3243static int f2fs_ioc_measure_verity(struct file *filp, unsigned long arg)
3244{
3245 if (!f2fs_sb_has_verity(F2FS_I_SB(file_inode(filp))))
3246 return -EOPNOTSUPP;
3247
3248 return fsverity_ioctl_measure(filp, (void __user *)arg);
3249}
3250
3251static int f2fs_ioc_read_verity_metadata(struct file *filp, unsigned long arg)
3252{
3253 if (!f2fs_sb_has_verity(F2FS_I_SB(file_inode(filp))))
3254 return -EOPNOTSUPP;
3255
3256 return fsverity_ioctl_read_metadata(filp, (const void __user *)arg);
3257}
3258
3259static int f2fs_ioc_getfslabel(struct file *filp, unsigned long arg)
3260{
3261 struct inode *inode = file_inode(filp);
3262 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3263 char *vbuf;
3264 int count;
3265 int err = 0;
3266
3267 vbuf = f2fs_kzalloc(sbi, MAX_VOLUME_NAME, GFP_KERNEL);
3268 if (!vbuf)
3269 return -ENOMEM;
3270
3271 down_read(&sbi->sb_lock);
3272 count = utf16s_to_utf8s(sbi->raw_super->volume_name,
3273 ARRAY_SIZE(sbi->raw_super->volume_name),
3274 UTF16_LITTLE_ENDIAN, vbuf, MAX_VOLUME_NAME);
3275 up_read(&sbi->sb_lock);
3276
3277 if (copy_to_user((char __user *)arg, vbuf,
3278 min(FSLABEL_MAX, count)))
3279 err = -EFAULT;
3280
3281 kfree(vbuf);
3282 return err;
3283}
3284
3285static int f2fs_ioc_setfslabel(struct file *filp, unsigned long arg)
3286{
3287 struct inode *inode = file_inode(filp);
3288 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3289 char *vbuf;
3290 int err = 0;
3291
3292 if (!capable(CAP_SYS_ADMIN))
3293 return -EPERM;
3294
3295 vbuf = strndup_user((const char __user *)arg, FSLABEL_MAX);
3296 if (IS_ERR(vbuf))
3297 return PTR_ERR(vbuf);
3298
3299 err = mnt_want_write_file(filp);
3300 if (err)
3301 goto out;
3302
3303 down_write(&sbi->sb_lock);
3304
3305 memset(sbi->raw_super->volume_name, 0,
3306 sizeof(sbi->raw_super->volume_name));
3307 utf8s_to_utf16s(vbuf, strlen(vbuf), UTF16_LITTLE_ENDIAN,
3308 sbi->raw_super->volume_name,
3309 ARRAY_SIZE(sbi->raw_super->volume_name));
3310
3311 err = f2fs_commit_super(sbi, false);
3312
3313 up_write(&sbi->sb_lock);
3314
3315 mnt_drop_write_file(filp);
3316out:
3317 kfree(vbuf);
3318 return err;
3319}
3320
3321static int f2fs_get_compress_blocks(struct file *filp, unsigned long arg)
3322{
3323 struct inode *inode = file_inode(filp);
3324 __u64 blocks;
3325
3326 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3327 return -EOPNOTSUPP;
3328
3329 if (!f2fs_compressed_file(inode))
3330 return -EINVAL;
3331
3332 blocks = atomic_read(&F2FS_I(inode)->i_compr_blocks);
3333 return put_user(blocks, (u64 __user *)arg);
3334}
3335
3336static int release_compress_blocks(struct dnode_of_data *dn, pgoff_t count)
3337{
3338 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
3339 unsigned int released_blocks = 0;
3340 int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
3341 block_t blkaddr;
3342 int i;
3343
3344 for (i = 0; i < count; i++) {
3345 blkaddr = data_blkaddr(dn->inode, dn->node_page,
3346 dn->ofs_in_node + i);
3347
3348 if (!__is_valid_data_blkaddr(blkaddr))
3349 continue;
3350 if (unlikely(!f2fs_is_valid_blkaddr(sbi, blkaddr,
3351 DATA_GENERIC_ENHANCE)))
3352 return -EFSCORRUPTED;
3353 }
3354
3355 while (count) {
3356 int compr_blocks = 0;
3357
3358 for (i = 0; i < cluster_size; i++, dn->ofs_in_node++) {
3359 blkaddr = f2fs_data_blkaddr(dn);
3360
3361 if (i == 0) {
3362 if (blkaddr == COMPRESS_ADDR)
3363 continue;
3364 dn->ofs_in_node += cluster_size;
3365 goto next;
3366 }
3367
3368 if (__is_valid_data_blkaddr(blkaddr))
3369 compr_blocks++;
3370
3371 if (blkaddr != NEW_ADDR)
3372 continue;
3373
3374 dn->data_blkaddr = NULL_ADDR;
3375 f2fs_set_data_blkaddr(dn);
3376 }
3377
3378 f2fs_i_compr_blocks_update(dn->inode, compr_blocks, false);
3379 dec_valid_block_count(sbi, dn->inode,
3380 cluster_size - compr_blocks);
3381
3382 released_blocks += cluster_size - compr_blocks;
3383next:
3384 count -= cluster_size;
3385 }
3386
3387 return released_blocks;
3388}
3389
3390static int f2fs_release_compress_blocks(struct file *filp, unsigned long arg)
3391{
3392 struct inode *inode = file_inode(filp);
3393 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3394 pgoff_t page_idx = 0, last_idx;
3395 unsigned int released_blocks = 0;
3396 int ret;
3397 int writecount;
3398
3399 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3400 return -EOPNOTSUPP;
3401
3402 if (!f2fs_compressed_file(inode))
3403 return -EINVAL;
3404
3405 if (f2fs_readonly(sbi->sb))
3406 return -EROFS;
3407
3408 ret = mnt_want_write_file(filp);
3409 if (ret)
3410 return ret;
3411
3412 f2fs_balance_fs(F2FS_I_SB(inode), true);
3413
3414 inode_lock(inode);
3415
3416 writecount = atomic_read(&inode->i_writecount);
3417 if ((filp->f_mode & FMODE_WRITE && writecount != 1) ||
3418 (!(filp->f_mode & FMODE_WRITE) && writecount)) {
3419 ret = -EBUSY;
3420 goto out;
3421 }
3422
3423 if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) {
3424 ret = -EINVAL;
3425 goto out;
3426 }
3427
3428 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
3429 if (ret)
3430 goto out;
3431
3432 set_inode_flag(inode, FI_COMPRESS_RELEASED);
3433 inode->i_ctime = current_time(inode);
3434 f2fs_mark_inode_dirty_sync(inode, true);
3435
3436 if (!atomic_read(&F2FS_I(inode)->i_compr_blocks))
3437 goto out;
3438
3439 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3440 down_write(&F2FS_I(inode)->i_mmap_sem);
3441
3442 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
3443
3444 while (page_idx < last_idx) {
3445 struct dnode_of_data dn;
3446 pgoff_t end_offset, count;
3447
3448 set_new_dnode(&dn, inode, NULL, NULL, 0);
3449 ret = f2fs_get_dnode_of_data(&dn, page_idx, LOOKUP_NODE);
3450 if (ret) {
3451 if (ret == -ENOENT) {
3452 page_idx = f2fs_get_next_page_offset(&dn,
3453 page_idx);
3454 ret = 0;
3455 continue;
3456 }
3457 break;
3458 }
3459
3460 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3461 count = min(end_offset - dn.ofs_in_node, last_idx - page_idx);
3462 count = round_up(count, F2FS_I(inode)->i_cluster_size);
3463
3464 ret = release_compress_blocks(&dn, count);
3465
3466 f2fs_put_dnode(&dn);
3467
3468 if (ret < 0)
3469 break;
3470
3471 page_idx += count;
3472 released_blocks += ret;
3473 }
3474
3475 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3476 up_write(&F2FS_I(inode)->i_mmap_sem);
3477out:
3478 inode_unlock(inode);
3479
3480 mnt_drop_write_file(filp);
3481
3482 if (ret >= 0) {
3483 ret = put_user(released_blocks, (u64 __user *)arg);
3484 } else if (released_blocks &&
3485 atomic_read(&F2FS_I(inode)->i_compr_blocks)) {
3486 set_sbi_flag(sbi, SBI_NEED_FSCK);
3487 f2fs_warn(sbi, "%s: partial blocks were released i_ino=%lx "
3488 "iblocks=%llu, released=%u, compr_blocks=%u, "
3489 "run fsck to fix.",
3490 __func__, inode->i_ino, inode->i_blocks,
3491 released_blocks,
3492 atomic_read(&F2FS_I(inode)->i_compr_blocks));
3493 }
3494
3495 return ret;
3496}
3497
3498static int reserve_compress_blocks(struct dnode_of_data *dn, pgoff_t count)
3499{
3500 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
3501 unsigned int reserved_blocks = 0;
3502 int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
3503 block_t blkaddr;
3504 int i;
3505
3506 for (i = 0; i < count; i++) {
3507 blkaddr = data_blkaddr(dn->inode, dn->node_page,
3508 dn->ofs_in_node + i);
3509
3510 if (!__is_valid_data_blkaddr(blkaddr))
3511 continue;
3512 if (unlikely(!f2fs_is_valid_blkaddr(sbi, blkaddr,
3513 DATA_GENERIC_ENHANCE)))
3514 return -EFSCORRUPTED;
3515 }
3516
3517 while (count) {
3518 int compr_blocks = 0;
3519 blkcnt_t reserved;
3520 int ret;
3521
3522 for (i = 0; i < cluster_size; i++, dn->ofs_in_node++) {
3523 blkaddr = f2fs_data_blkaddr(dn);
3524
3525 if (i == 0) {
3526 if (blkaddr == COMPRESS_ADDR)
3527 continue;
3528 dn->ofs_in_node += cluster_size;
3529 goto next;
3530 }
3531
3532 if (__is_valid_data_blkaddr(blkaddr)) {
3533 compr_blocks++;
3534 continue;
3535 }
3536
3537 dn->data_blkaddr = NEW_ADDR;
3538 f2fs_set_data_blkaddr(dn);
3539 }
3540
3541 reserved = cluster_size - compr_blocks;
3542 ret = inc_valid_block_count(sbi, dn->inode, &reserved);
3543 if (ret)
3544 return ret;
3545
3546 if (reserved != cluster_size - compr_blocks)
3547 return -ENOSPC;
3548
3549 f2fs_i_compr_blocks_update(dn->inode, compr_blocks, true);
3550
3551 reserved_blocks += reserved;
3552next:
3553 count -= cluster_size;
3554 }
3555
3556 return reserved_blocks;
3557}
3558
3559static int f2fs_reserve_compress_blocks(struct file *filp, unsigned long arg)
3560{
3561 struct inode *inode = file_inode(filp);
3562 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3563 pgoff_t page_idx = 0, last_idx;
3564 unsigned int reserved_blocks = 0;
3565 int ret;
3566
3567 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3568 return -EOPNOTSUPP;
3569
3570 if (!f2fs_compressed_file(inode))
3571 return -EINVAL;
3572
3573 if (f2fs_readonly(sbi->sb))
3574 return -EROFS;
3575
3576 ret = mnt_want_write_file(filp);
3577 if (ret)
3578 return ret;
3579
3580 if (atomic_read(&F2FS_I(inode)->i_compr_blocks))
3581 goto out;
3582
3583 f2fs_balance_fs(F2FS_I_SB(inode), true);
3584
3585 inode_lock(inode);
3586
3587 if (!is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) {
3588 ret = -EINVAL;
3589 goto unlock_inode;
3590 }
3591
3592 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3593 down_write(&F2FS_I(inode)->i_mmap_sem);
3594
3595 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
3596
3597 while (page_idx < last_idx) {
3598 struct dnode_of_data dn;
3599 pgoff_t end_offset, count;
3600
3601 set_new_dnode(&dn, inode, NULL, NULL, 0);
3602 ret = f2fs_get_dnode_of_data(&dn, page_idx, LOOKUP_NODE);
3603 if (ret) {
3604 if (ret == -ENOENT) {
3605 page_idx = f2fs_get_next_page_offset(&dn,
3606 page_idx);
3607 ret = 0;
3608 continue;
3609 }
3610 break;
3611 }
3612
3613 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3614 count = min(end_offset - dn.ofs_in_node, last_idx - page_idx);
3615 count = round_up(count, F2FS_I(inode)->i_cluster_size);
3616
3617 ret = reserve_compress_blocks(&dn, count);
3618
3619 f2fs_put_dnode(&dn);
3620
3621 if (ret < 0)
3622 break;
3623
3624 page_idx += count;
3625 reserved_blocks += ret;
3626 }
3627
3628 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3629 up_write(&F2FS_I(inode)->i_mmap_sem);
3630
3631 if (ret >= 0) {
3632 clear_inode_flag(inode, FI_COMPRESS_RELEASED);
3633 inode->i_ctime = current_time(inode);
3634 f2fs_mark_inode_dirty_sync(inode, true);
3635 }
3636unlock_inode:
3637 inode_unlock(inode);
3638out:
3639 mnt_drop_write_file(filp);
3640
3641 if (ret >= 0) {
3642 ret = put_user(reserved_blocks, (u64 __user *)arg);
3643 } else if (reserved_blocks &&
3644 atomic_read(&F2FS_I(inode)->i_compr_blocks)) {
3645 set_sbi_flag(sbi, SBI_NEED_FSCK);
3646 f2fs_warn(sbi, "%s: partial blocks were released i_ino=%lx "
3647 "iblocks=%llu, reserved=%u, compr_blocks=%u, "
3648 "run fsck to fix.",
3649 __func__, inode->i_ino, inode->i_blocks,
3650 reserved_blocks,
3651 atomic_read(&F2FS_I(inode)->i_compr_blocks));
3652 }
3653
3654 return ret;
3655}
3656
3657static int f2fs_secure_erase(struct block_device *bdev, struct inode *inode,
3658 pgoff_t off, block_t block, block_t len, u32 flags)
3659{
3660 struct request_queue *q = bdev_get_queue(bdev);
3661 sector_t sector = SECTOR_FROM_BLOCK(block);
3662 sector_t nr_sects = SECTOR_FROM_BLOCK(len);
3663 int ret = 0;
3664
3665 if (!q)
3666 return -ENXIO;
3667
3668 if (flags & F2FS_TRIM_FILE_DISCARD)
3669 ret = blkdev_issue_discard(bdev, sector, nr_sects, GFP_NOFS,
3670 blk_queue_secure_erase(q) ?
3671 BLKDEV_DISCARD_SECURE : 0);
3672
3673 if (!ret && (flags & F2FS_TRIM_FILE_ZEROOUT)) {
3674 if (IS_ENCRYPTED(inode))
3675 ret = fscrypt_zeroout_range(inode, off, block, len);
3676 else
3677 ret = blkdev_issue_zeroout(bdev, sector, nr_sects,
3678 GFP_NOFS, 0);
3679 }
3680
3681 return ret;
3682}
3683
3684static int f2fs_sec_trim_file(struct file *filp, unsigned long arg)
3685{
3686 struct inode *inode = file_inode(filp);
3687 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3688 struct address_space *mapping = inode->i_mapping;
3689 struct block_device *prev_bdev = NULL;
3690 struct f2fs_sectrim_range range;
3691 pgoff_t index, pg_end, prev_index = 0;
3692 block_t prev_block = 0, len = 0;
3693 loff_t end_addr;
3694 bool to_end = false;
3695 int ret = 0;
3696
3697 if (!(filp->f_mode & FMODE_WRITE))
3698 return -EBADF;
3699
3700 if (copy_from_user(&range, (struct f2fs_sectrim_range __user *)arg,
3701 sizeof(range)))
3702 return -EFAULT;
3703
3704 if (range.flags == 0 || (range.flags & ~F2FS_TRIM_FILE_MASK) ||
3705 !S_ISREG(inode->i_mode))
3706 return -EINVAL;
3707
3708 if (((range.flags & F2FS_TRIM_FILE_DISCARD) &&
3709 !f2fs_hw_support_discard(sbi)) ||
3710 ((range.flags & F2FS_TRIM_FILE_ZEROOUT) &&
3711 IS_ENCRYPTED(inode) && f2fs_is_multi_device(sbi)))
3712 return -EOPNOTSUPP;
3713
3714 file_start_write(filp);
3715 inode_lock(inode);
3716
3717 if (f2fs_is_atomic_file(inode) || f2fs_compressed_file(inode) ||
3718 range.start >= inode->i_size) {
3719 ret = -EINVAL;
3720 goto err;
3721 }
3722
3723 if (range.len == 0)
3724 goto err;
3725
3726 if (inode->i_size - range.start > range.len) {
3727 end_addr = range.start + range.len;
3728 } else {
3729 end_addr = range.len == (u64)-1 ?
3730 sbi->sb->s_maxbytes : inode->i_size;
3731 to_end = true;
3732 }
3733
3734 if (!IS_ALIGNED(range.start, F2FS_BLKSIZE) ||
3735 (!to_end && !IS_ALIGNED(end_addr, F2FS_BLKSIZE))) {
3736 ret = -EINVAL;
3737 goto err;
3738 }
3739
3740 index = F2FS_BYTES_TO_BLK(range.start);
3741 pg_end = DIV_ROUND_UP(end_addr, F2FS_BLKSIZE);
3742
3743 ret = f2fs_convert_inline_inode(inode);
3744 if (ret)
3745 goto err;
3746
3747 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3748 down_write(&F2FS_I(inode)->i_mmap_sem);
3749
3750 ret = filemap_write_and_wait_range(mapping, range.start,
3751 to_end ? LLONG_MAX : end_addr - 1);
3752 if (ret)
3753 goto out;
3754
3755 truncate_inode_pages_range(mapping, range.start,
3756 to_end ? -1 : end_addr - 1);
3757
3758 while (index < pg_end) {
3759 struct dnode_of_data dn;
3760 pgoff_t end_offset, count;
3761 int i;
3762
3763 set_new_dnode(&dn, inode, NULL, NULL, 0);
3764 ret = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE);
3765 if (ret) {
3766 if (ret == -ENOENT) {
3767 index = f2fs_get_next_page_offset(&dn, index);
3768 continue;
3769 }
3770 goto out;
3771 }
3772
3773 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3774 count = min(end_offset - dn.ofs_in_node, pg_end - index);
3775 for (i = 0; i < count; i++, index++, dn.ofs_in_node++) {
3776 struct block_device *cur_bdev;
3777 block_t blkaddr = f2fs_data_blkaddr(&dn);
3778
3779 if (!__is_valid_data_blkaddr(blkaddr))
3780 continue;
3781
3782 if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
3783 DATA_GENERIC_ENHANCE)) {
3784 ret = -EFSCORRUPTED;
3785 f2fs_put_dnode(&dn);
3786 goto out;
3787 }
3788
3789 cur_bdev = f2fs_target_device(sbi, blkaddr, NULL);
3790 if (f2fs_is_multi_device(sbi)) {
3791 int di = f2fs_target_device_index(sbi, blkaddr);
3792
3793 blkaddr -= FDEV(di).start_blk;
3794 }
3795
3796 if (len) {
3797 if (prev_bdev == cur_bdev &&
3798 index == prev_index + len &&
3799 blkaddr == prev_block + len) {
3800 len++;
3801 } else {
3802 ret = f2fs_secure_erase(prev_bdev,
3803 inode, prev_index, prev_block,
3804 len, range.flags);
3805 if (ret) {
3806 f2fs_put_dnode(&dn);
3807 goto out;
3808 }
3809
3810 len = 0;
3811 }
3812 }
3813
3814 if (!len) {
3815 prev_bdev = cur_bdev;
3816 prev_index = index;
3817 prev_block = blkaddr;
3818 len = 1;
3819 }
3820 }
3821
3822 f2fs_put_dnode(&dn);
3823
3824 if (fatal_signal_pending(current)) {
3825 ret = -EINTR;
3826 goto out;
3827 }
3828 cond_resched();
3829 }
3830
3831 if (len)
3832 ret = f2fs_secure_erase(prev_bdev, inode, prev_index,
3833 prev_block, len, range.flags);
3834out:
3835 up_write(&F2FS_I(inode)->i_mmap_sem);
3836 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3837err:
3838 inode_unlock(inode);
3839 file_end_write(filp);
3840
3841 return ret;
3842}
3843
3844static int f2fs_ioc_get_compress_option(struct file *filp, unsigned long arg)
3845{
3846 struct inode *inode = file_inode(filp);
3847 struct f2fs_comp_option option;
3848
3849 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3850 return -EOPNOTSUPP;
3851
3852 inode_lock_shared(inode);
3853
3854 if (!f2fs_compressed_file(inode)) {
3855 inode_unlock_shared(inode);
3856 return -ENODATA;
3857 }
3858
3859 option.algorithm = F2FS_I(inode)->i_compress_algorithm;
3860 option.log_cluster_size = F2FS_I(inode)->i_log_cluster_size;
3861
3862 inode_unlock_shared(inode);
3863
3864 if (copy_to_user((struct f2fs_comp_option __user *)arg, &option,
3865 sizeof(option)))
3866 return -EFAULT;
3867
3868 return 0;
3869}
3870
3871static int f2fs_ioc_set_compress_option(struct file *filp, unsigned long arg)
3872{
3873 struct inode *inode = file_inode(filp);
3874 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3875 struct f2fs_comp_option option;
3876 int ret = 0;
3877
3878 if (!f2fs_sb_has_compression(sbi))
3879 return -EOPNOTSUPP;
3880
3881 if (!(filp->f_mode & FMODE_WRITE))
3882 return -EBADF;
3883
3884 if (copy_from_user(&option, (struct f2fs_comp_option __user *)arg,
3885 sizeof(option)))
3886 return -EFAULT;
3887
3888 if (!f2fs_compressed_file(inode) ||
3889 option.log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
3890 option.log_cluster_size > MAX_COMPRESS_LOG_SIZE ||
3891 option.algorithm >= COMPRESS_MAX)
3892 return -EINVAL;
3893
3894 file_start_write(filp);
3895 inode_lock(inode);
3896
3897 if (f2fs_is_mmap_file(inode) || get_dirty_pages(inode)) {
3898 ret = -EBUSY;
3899 goto out;
3900 }
3901
3902 if (inode->i_size != 0) {
3903 ret = -EFBIG;
3904 goto out;
3905 }
3906
3907 F2FS_I(inode)->i_compress_algorithm = option.algorithm;
3908 F2FS_I(inode)->i_log_cluster_size = option.log_cluster_size;
3909 F2FS_I(inode)->i_cluster_size = 1 << option.log_cluster_size;
3910 f2fs_mark_inode_dirty_sync(inode, true);
3911
3912 if (!f2fs_is_compress_backend_ready(inode))
3913 f2fs_warn(sbi, "compression algorithm is successfully set, "
3914 "but current kernel doesn't support this algorithm.");
3915out:
3916 inode_unlock(inode);
3917 file_end_write(filp);
3918
3919 return ret;
3920}
3921
3922static int redirty_blocks(struct inode *inode, pgoff_t page_idx, int len)
3923{
3924 DEFINE_READAHEAD(ractl, NULL, NULL, inode->i_mapping, page_idx);
3925 struct address_space *mapping = inode->i_mapping;
3926 struct page *page;
3927 pgoff_t redirty_idx = page_idx;
3928 int i, page_len = 0, ret = 0;
3929
3930 page_cache_ra_unbounded(&ractl, len, 0);
3931
3932 for (i = 0; i < len; i++, page_idx++) {
3933 page = read_cache_page(mapping, page_idx, NULL, NULL);
3934 if (IS_ERR(page)) {
3935 ret = PTR_ERR(page);
3936 break;
3937 }
3938 page_len++;
3939 }
3940
3941 for (i = 0; i < page_len; i++, redirty_idx++) {
3942 page = find_lock_page(mapping, redirty_idx);
3943 if (!page) {
3944 ret = -ENOMEM;
3945 break;
3946 }
3947 set_page_dirty(page);
3948 f2fs_put_page(page, 1);
3949 f2fs_put_page(page, 0);
3950 }
3951
3952 return ret;
3953}
3954
3955static int f2fs_ioc_decompress_file(struct file *filp, unsigned long arg)
3956{
3957 struct inode *inode = file_inode(filp);
3958 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3959 struct f2fs_inode_info *fi = F2FS_I(inode);
3960 pgoff_t page_idx = 0, last_idx;
3961 unsigned int blk_per_seg = sbi->blocks_per_seg;
3962 int cluster_size = F2FS_I(inode)->i_cluster_size;
3963 int count, ret;
3964
3965 if (!f2fs_sb_has_compression(sbi) ||
3966 F2FS_OPTION(sbi).compress_mode != COMPR_MODE_USER)
3967 return -EOPNOTSUPP;
3968
3969 if (!(filp->f_mode & FMODE_WRITE))
3970 return -EBADF;
3971
3972 if (!f2fs_compressed_file(inode))
3973 return -EINVAL;
3974
3975 f2fs_balance_fs(F2FS_I_SB(inode), true);
3976
3977 file_start_write(filp);
3978 inode_lock(inode);
3979
3980 if (!f2fs_is_compress_backend_ready(inode)) {
3981 ret = -EOPNOTSUPP;
3982 goto out;
3983 }
3984
3985 if (f2fs_is_mmap_file(inode)) {
3986 ret = -EBUSY;
3987 goto out;
3988 }
3989
3990 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
3991 if (ret)
3992 goto out;
3993
3994 if (!atomic_read(&fi->i_compr_blocks))
3995 goto out;
3996
3997 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
3998
3999 count = last_idx - page_idx;
4000 while (count) {
4001 int len = min(cluster_size, count);
4002
4003 ret = redirty_blocks(inode, page_idx, len);
4004 if (ret < 0)
4005 break;
4006
4007 if (get_dirty_pages(inode) >= blk_per_seg)
4008 filemap_fdatawrite(inode->i_mapping);
4009
4010 count -= len;
4011 page_idx += len;
4012 }
4013
4014 if (!ret)
4015 ret = filemap_write_and_wait_range(inode->i_mapping, 0,
4016 LLONG_MAX);
4017
4018 if (ret)
4019 f2fs_warn(sbi, "%s: The file might be partially decompressed (errno=%d). Please delete the file.",
4020 __func__, ret);
4021out:
4022 inode_unlock(inode);
4023 file_end_write(filp);
4024
4025 return ret;
4026}
4027
4028static int f2fs_ioc_compress_file(struct file *filp, unsigned long arg)
4029{
4030 struct inode *inode = file_inode(filp);
4031 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4032 pgoff_t page_idx = 0, last_idx;
4033 unsigned int blk_per_seg = sbi->blocks_per_seg;
4034 int cluster_size = F2FS_I(inode)->i_cluster_size;
4035 int count, ret;
4036
4037 if (!f2fs_sb_has_compression(sbi) ||
4038 F2FS_OPTION(sbi).compress_mode != COMPR_MODE_USER)
4039 return -EOPNOTSUPP;
4040
4041 if (!(filp->f_mode & FMODE_WRITE))
4042 return -EBADF;
4043
4044 if (!f2fs_compressed_file(inode))
4045 return -EINVAL;
4046
4047 f2fs_balance_fs(F2FS_I_SB(inode), true);
4048
4049 file_start_write(filp);
4050 inode_lock(inode);
4051
4052 if (!f2fs_is_compress_backend_ready(inode)) {
4053 ret = -EOPNOTSUPP;
4054 goto out;
4055 }
4056
4057 if (f2fs_is_mmap_file(inode)) {
4058 ret = -EBUSY;
4059 goto out;
4060 }
4061
4062 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
4063 if (ret)
4064 goto out;
4065
4066 set_inode_flag(inode, FI_ENABLE_COMPRESS);
4067
4068 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
4069
4070 count = last_idx - page_idx;
4071 while (count) {
4072 int len = min(cluster_size, count);
4073
4074 ret = redirty_blocks(inode, page_idx, len);
4075 if (ret < 0)
4076 break;
4077
4078 if (get_dirty_pages(inode) >= blk_per_seg)
4079 filemap_fdatawrite(inode->i_mapping);
4080
4081 count -= len;
4082 page_idx += len;
4083 }
4084
4085 if (!ret)
4086 ret = filemap_write_and_wait_range(inode->i_mapping, 0,
4087 LLONG_MAX);
4088
4089 clear_inode_flag(inode, FI_ENABLE_COMPRESS);
4090
4091 if (ret)
4092 f2fs_warn(sbi, "%s: The file might be partially compressed (errno=%d). Please delete the file.",
4093 __func__, ret);
4094out:
4095 inode_unlock(inode);
4096 file_end_write(filp);
4097
4098 return ret;
4099}
4100
4101static long __f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
4102{
4103 switch (cmd) {
4104 case FS_IOC_GETVERSION:
4105 return f2fs_ioc_getversion(filp, arg);
4106 case F2FS_IOC_START_ATOMIC_WRITE:
4107 return f2fs_ioc_start_atomic_write(filp);
4108 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
4109 return f2fs_ioc_commit_atomic_write(filp);
4110 case F2FS_IOC_START_VOLATILE_WRITE:
4111 return f2fs_ioc_start_volatile_write(filp);
4112 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
4113 return f2fs_ioc_release_volatile_write(filp);
4114 case F2FS_IOC_ABORT_VOLATILE_WRITE:
4115 return f2fs_ioc_abort_volatile_write(filp);
4116 case F2FS_IOC_SHUTDOWN:
4117 return f2fs_ioc_shutdown(filp, arg);
4118 case FITRIM:
4119 return f2fs_ioc_fitrim(filp, arg);
4120 case FS_IOC_SET_ENCRYPTION_POLICY:
4121 return f2fs_ioc_set_encryption_policy(filp, arg);
4122 case FS_IOC_GET_ENCRYPTION_POLICY:
4123 return f2fs_ioc_get_encryption_policy(filp, arg);
4124 case FS_IOC_GET_ENCRYPTION_PWSALT:
4125 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
4126 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
4127 return f2fs_ioc_get_encryption_policy_ex(filp, arg);
4128 case FS_IOC_ADD_ENCRYPTION_KEY:
4129 return f2fs_ioc_add_encryption_key(filp, arg);
4130 case FS_IOC_REMOVE_ENCRYPTION_KEY:
4131 return f2fs_ioc_remove_encryption_key(filp, arg);
4132 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
4133 return f2fs_ioc_remove_encryption_key_all_users(filp, arg);
4134 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
4135 return f2fs_ioc_get_encryption_key_status(filp, arg);
4136 case FS_IOC_GET_ENCRYPTION_NONCE:
4137 return f2fs_ioc_get_encryption_nonce(filp, arg);
4138 case F2FS_IOC_GARBAGE_COLLECT:
4139 return f2fs_ioc_gc(filp, arg);
4140 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
4141 return f2fs_ioc_gc_range(filp, arg);
4142 case F2FS_IOC_WRITE_CHECKPOINT:
4143 return f2fs_ioc_write_checkpoint(filp, arg);
4144 case F2FS_IOC_DEFRAGMENT:
4145 return f2fs_ioc_defragment(filp, arg);
4146 case F2FS_IOC_MOVE_RANGE:
4147 return f2fs_ioc_move_range(filp, arg);
4148 case F2FS_IOC_FLUSH_DEVICE:
4149 return f2fs_ioc_flush_device(filp, arg);
4150 case F2FS_IOC_GET_FEATURES:
4151 return f2fs_ioc_get_features(filp, arg);
4152 case F2FS_IOC_GET_PIN_FILE:
4153 return f2fs_ioc_get_pin_file(filp, arg);
4154 case F2FS_IOC_SET_PIN_FILE:
4155 return f2fs_ioc_set_pin_file(filp, arg);
4156 case F2FS_IOC_PRECACHE_EXTENTS:
4157 return f2fs_ioc_precache_extents(filp, arg);
4158 case F2FS_IOC_RESIZE_FS:
4159 return f2fs_ioc_resize_fs(filp, arg);
4160 case FS_IOC_ENABLE_VERITY:
4161 return f2fs_ioc_enable_verity(filp, arg);
4162 case FS_IOC_MEASURE_VERITY:
4163 return f2fs_ioc_measure_verity(filp, arg);
4164 case FS_IOC_READ_VERITY_METADATA:
4165 return f2fs_ioc_read_verity_metadata(filp, arg);
4166 case FS_IOC_GETFSLABEL:
4167 return f2fs_ioc_getfslabel(filp, arg);
4168 case FS_IOC_SETFSLABEL:
4169 return f2fs_ioc_setfslabel(filp, arg);
4170 case F2FS_IOC_GET_COMPRESS_BLOCKS:
4171 return f2fs_get_compress_blocks(filp, arg);
4172 case F2FS_IOC_RELEASE_COMPRESS_BLOCKS:
4173 return f2fs_release_compress_blocks(filp, arg);
4174 case F2FS_IOC_RESERVE_COMPRESS_BLOCKS:
4175 return f2fs_reserve_compress_blocks(filp, arg);
4176 case F2FS_IOC_SEC_TRIM_FILE:
4177 return f2fs_sec_trim_file(filp, arg);
4178 case F2FS_IOC_GET_COMPRESS_OPTION:
4179 return f2fs_ioc_get_compress_option(filp, arg);
4180 case F2FS_IOC_SET_COMPRESS_OPTION:
4181 return f2fs_ioc_set_compress_option(filp, arg);
4182 case F2FS_IOC_DECOMPRESS_FILE:
4183 return f2fs_ioc_decompress_file(filp, arg);
4184 case F2FS_IOC_COMPRESS_FILE:
4185 return f2fs_ioc_compress_file(filp, arg);
4186 default:
4187 return -ENOTTY;
4188 }
4189}
4190
4191long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
4192{
4193 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
4194 return -EIO;
4195 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(filp))))
4196 return -ENOSPC;
4197
4198 return __f2fs_ioctl(filp, cmd, arg);
4199}
4200
4201static ssize_t f2fs_file_read_iter(struct kiocb *iocb, struct iov_iter *iter)
4202{
4203 struct file *file = iocb->ki_filp;
4204 struct inode *inode = file_inode(file);
4205 int ret;
4206
4207 if (!f2fs_is_compress_backend_ready(inode))
4208 return -EOPNOTSUPP;
4209
4210 ret = generic_file_read_iter(iocb, iter);
4211
4212 if (ret > 0)
4213 f2fs_update_iostat(F2FS_I_SB(inode), APP_READ_IO, ret);
4214
4215 return ret;
4216}
4217
4218static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
4219{
4220 struct file *file = iocb->ki_filp;
4221 struct inode *inode = file_inode(file);
4222 ssize_t ret;
4223
4224 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) {
4225 ret = -EIO;
4226 goto out;
4227 }
4228
4229 if (!f2fs_is_compress_backend_ready(inode)) {
4230 ret = -EOPNOTSUPP;
4231 goto out;
4232 }
4233
4234 if (iocb->ki_flags & IOCB_NOWAIT) {
4235 if (!inode_trylock(inode)) {
4236 ret = -EAGAIN;
4237 goto out;
4238 }
4239 } else {
4240 inode_lock(inode);
4241 }
4242
4243 if (unlikely(IS_IMMUTABLE(inode))) {
4244 ret = -EPERM;
4245 goto unlock;
4246 }
4247
4248 if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) {
4249 ret = -EPERM;
4250 goto unlock;
4251 }
4252
4253 ret = generic_write_checks(iocb, from);
4254 if (ret > 0) {
4255 bool preallocated = false;
4256 size_t target_size = 0;
4257 int err;
4258
4259 if (iov_iter_fault_in_readable(from, iov_iter_count(from)))
4260 set_inode_flag(inode, FI_NO_PREALLOC);
4261
4262 if ((iocb->ki_flags & IOCB_NOWAIT)) {
4263 if (!f2fs_overwrite_io(inode, iocb->ki_pos,
4264 iov_iter_count(from)) ||
4265 f2fs_has_inline_data(inode) ||
4266 f2fs_force_buffered_io(inode, iocb, from)) {
4267 clear_inode_flag(inode, FI_NO_PREALLOC);
4268 inode_unlock(inode);
4269 ret = -EAGAIN;
4270 goto out;
4271 }
4272 goto write;
4273 }
4274
4275 if (is_inode_flag_set(inode, FI_NO_PREALLOC))
4276 goto write;
4277
4278 if (iocb->ki_flags & IOCB_DIRECT) {
4279 /*
4280 * Convert inline data for Direct I/O before entering
4281 * f2fs_direct_IO().
4282 */
4283 err = f2fs_convert_inline_inode(inode);
4284 if (err)
4285 goto out_err;
4286 /*
4287 * If force_buffere_io() is true, we have to allocate
4288 * blocks all the time, since f2fs_direct_IO will fall
4289 * back to buffered IO.
4290 */
4291 if (!f2fs_force_buffered_io(inode, iocb, from) &&
4292 allow_outplace_dio(inode, iocb, from))
4293 goto write;
4294 }
4295 preallocated = true;
4296 target_size = iocb->ki_pos + iov_iter_count(from);
4297
4298 err = f2fs_preallocate_blocks(iocb, from);
4299 if (err) {
4300out_err:
4301 clear_inode_flag(inode, FI_NO_PREALLOC);
4302 inode_unlock(inode);
4303 ret = err;
4304 goto out;
4305 }
4306write:
4307 ret = __generic_file_write_iter(iocb, from);
4308 clear_inode_flag(inode, FI_NO_PREALLOC);
4309
4310 /* if we couldn't write data, we should deallocate blocks. */
4311 if (preallocated && i_size_read(inode) < target_size) {
4312 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
4313 down_write(&F2FS_I(inode)->i_mmap_sem);
4314 f2fs_truncate(inode);
4315 up_write(&F2FS_I(inode)->i_mmap_sem);
4316 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
4317 }
4318
4319 if (ret > 0)
4320 f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret);
4321 }
4322unlock:
4323 inode_unlock(inode);
4324out:
4325 trace_f2fs_file_write_iter(inode, iocb->ki_pos,
4326 iov_iter_count(from), ret);
4327 if (ret > 0)
4328 ret = generic_write_sync(iocb, ret);
4329 return ret;
4330}
4331
4332#ifdef CONFIG_COMPAT
4333struct compat_f2fs_gc_range {
4334 u32 sync;
4335 compat_u64 start;
4336 compat_u64 len;
4337};
4338#define F2FS_IOC32_GARBAGE_COLLECT_RANGE _IOW(F2FS_IOCTL_MAGIC, 11,\
4339 struct compat_f2fs_gc_range)
4340
4341static int f2fs_compat_ioc_gc_range(struct file *file, unsigned long arg)
4342{
4343 struct compat_f2fs_gc_range __user *urange;
4344 struct f2fs_gc_range range;
4345 int err;
4346
4347 urange = compat_ptr(arg);
4348 err = get_user(range.sync, &urange->sync);
4349 err |= get_user(range.start, &urange->start);
4350 err |= get_user(range.len, &urange->len);
4351 if (err)
4352 return -EFAULT;
4353
4354 return __f2fs_ioc_gc_range(file, &range);
4355}
4356
4357struct compat_f2fs_move_range {
4358 u32 dst_fd;
4359 compat_u64 pos_in;
4360 compat_u64 pos_out;
4361 compat_u64 len;
4362};
4363#define F2FS_IOC32_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \
4364 struct compat_f2fs_move_range)
4365
4366static int f2fs_compat_ioc_move_range(struct file *file, unsigned long arg)
4367{
4368 struct compat_f2fs_move_range __user *urange;
4369 struct f2fs_move_range range;
4370 int err;
4371
4372 urange = compat_ptr(arg);
4373 err = get_user(range.dst_fd, &urange->dst_fd);
4374 err |= get_user(range.pos_in, &urange->pos_in);
4375 err |= get_user(range.pos_out, &urange->pos_out);
4376 err |= get_user(range.len, &urange->len);
4377 if (err)
4378 return -EFAULT;
4379
4380 return __f2fs_ioc_move_range(file, &range);
4381}
4382
4383long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
4384{
4385 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
4386 return -EIO;
4387 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(file))))
4388 return -ENOSPC;
4389
4390 switch (cmd) {
4391 case FS_IOC32_GETVERSION:
4392 cmd = FS_IOC_GETVERSION;
4393 break;
4394 case F2FS_IOC32_GARBAGE_COLLECT_RANGE:
4395 return f2fs_compat_ioc_gc_range(file, arg);
4396 case F2FS_IOC32_MOVE_RANGE:
4397 return f2fs_compat_ioc_move_range(file, arg);
4398 case F2FS_IOC_START_ATOMIC_WRITE:
4399 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
4400 case F2FS_IOC_START_VOLATILE_WRITE:
4401 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
4402 case F2FS_IOC_ABORT_VOLATILE_WRITE:
4403 case F2FS_IOC_SHUTDOWN:
4404 case FITRIM:
4405 case FS_IOC_SET_ENCRYPTION_POLICY:
4406 case FS_IOC_GET_ENCRYPTION_PWSALT:
4407 case FS_IOC_GET_ENCRYPTION_POLICY:
4408 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
4409 case FS_IOC_ADD_ENCRYPTION_KEY:
4410 case FS_IOC_REMOVE_ENCRYPTION_KEY:
4411 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
4412 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
4413 case FS_IOC_GET_ENCRYPTION_NONCE:
4414 case F2FS_IOC_GARBAGE_COLLECT:
4415 case F2FS_IOC_WRITE_CHECKPOINT:
4416 case F2FS_IOC_DEFRAGMENT:
4417 case F2FS_IOC_FLUSH_DEVICE:
4418 case F2FS_IOC_GET_FEATURES:
4419 case F2FS_IOC_GET_PIN_FILE:
4420 case F2FS_IOC_SET_PIN_FILE:
4421 case F2FS_IOC_PRECACHE_EXTENTS:
4422 case F2FS_IOC_RESIZE_FS:
4423 case FS_IOC_ENABLE_VERITY:
4424 case FS_IOC_MEASURE_VERITY:
4425 case FS_IOC_READ_VERITY_METADATA:
4426 case FS_IOC_GETFSLABEL:
4427 case FS_IOC_SETFSLABEL:
4428 case F2FS_IOC_GET_COMPRESS_BLOCKS:
4429 case F2FS_IOC_RELEASE_COMPRESS_BLOCKS:
4430 case F2FS_IOC_RESERVE_COMPRESS_BLOCKS:
4431 case F2FS_IOC_SEC_TRIM_FILE:
4432 case F2FS_IOC_GET_COMPRESS_OPTION:
4433 case F2FS_IOC_SET_COMPRESS_OPTION:
4434 case F2FS_IOC_DECOMPRESS_FILE:
4435 case F2FS_IOC_COMPRESS_FILE:
4436 break;
4437 default:
4438 return -ENOIOCTLCMD;
4439 }
4440 return __f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
4441}
4442#endif
4443
4444const struct file_operations f2fs_file_operations = {
4445 .llseek = f2fs_llseek,
4446 .read_iter = f2fs_file_read_iter,
4447 .write_iter = f2fs_file_write_iter,
4448 .open = f2fs_file_open,
4449 .release = f2fs_release_file,
4450 .mmap = f2fs_file_mmap,
4451 .flush = f2fs_file_flush,
4452 .fsync = f2fs_sync_file,
4453 .fallocate = f2fs_fallocate,
4454 .unlocked_ioctl = f2fs_ioctl,
4455#ifdef CONFIG_COMPAT
4456 .compat_ioctl = f2fs_compat_ioctl,
4457#endif
4458 .splice_read = generic_file_splice_read,
4459 .splice_write = iter_file_splice_write,
4460};
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
26#include "f2fs.h"
27#include "node.h"
28#include "segment.h"
29#include "xattr.h"
30#include "acl.h"
31#include "gc.h"
32#include "trace.h"
33#include <trace/events/f2fs.h>
34
35static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf)
36{
37 struct inode *inode = file_inode(vmf->vma->vm_file);
38 vm_fault_t ret;
39
40 down_read(&F2FS_I(inode)->i_mmap_sem);
41 ret = filemap_fault(vmf);
42 up_read(&F2FS_I(inode)->i_mmap_sem);
43
44 if (!ret)
45 f2fs_update_iostat(F2FS_I_SB(inode), APP_MAPPED_READ_IO,
46 F2FS_BLKSIZE);
47
48 trace_f2fs_filemap_fault(inode, vmf->pgoff, (unsigned long)ret);
49
50 return ret;
51}
52
53static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf)
54{
55 struct page *page = vmf->page;
56 struct inode *inode = file_inode(vmf->vma->vm_file);
57 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
58 struct dnode_of_data dn;
59 bool need_alloc = true;
60 int err = 0;
61
62 if (unlikely(f2fs_cp_error(sbi))) {
63 err = -EIO;
64 goto err;
65 }
66
67 if (!f2fs_is_checkpoint_ready(sbi)) {
68 err = -ENOSPC;
69 goto err;
70 }
71
72#ifdef CONFIG_F2FS_FS_COMPRESSION
73 if (f2fs_compressed_file(inode)) {
74 int ret = f2fs_is_compressed_cluster(inode, page->index);
75
76 if (ret < 0) {
77 err = ret;
78 goto err;
79 } else if (ret) {
80 if (ret < F2FS_I(inode)->i_cluster_size) {
81 err = -EAGAIN;
82 goto err;
83 }
84 need_alloc = false;
85 }
86 }
87#endif
88 /* should do out of any locked page */
89 if (need_alloc)
90 f2fs_balance_fs(sbi, true);
91
92 sb_start_pagefault(inode->i_sb);
93
94 f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
95
96 file_update_time(vmf->vma->vm_file);
97 down_read(&F2FS_I(inode)->i_mmap_sem);
98 lock_page(page);
99 if (unlikely(page->mapping != inode->i_mapping ||
100 page_offset(page) > i_size_read(inode) ||
101 !PageUptodate(page))) {
102 unlock_page(page);
103 err = -EFAULT;
104 goto out_sem;
105 }
106
107 if (need_alloc) {
108 /* block allocation */
109 f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true);
110 set_new_dnode(&dn, inode, NULL, NULL, 0);
111 err = f2fs_get_block(&dn, page->index);
112 f2fs_put_dnode(&dn);
113 f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false);
114 }
115
116#ifdef CONFIG_F2FS_FS_COMPRESSION
117 if (!need_alloc) {
118 set_new_dnode(&dn, inode, NULL, NULL, 0);
119 err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE);
120 f2fs_put_dnode(&dn);
121 }
122#endif
123 if (err) {
124 unlock_page(page);
125 goto out_sem;
126 }
127
128 f2fs_wait_on_page_writeback(page, DATA, false, true);
129
130 /* wait for GCed page writeback via META_MAPPING */
131 f2fs_wait_on_block_writeback(inode, dn.data_blkaddr);
132
133 /*
134 * check to see if the page is mapped already (no holes)
135 */
136 if (PageMappedToDisk(page))
137 goto out_sem;
138
139 /* page is wholly or partially inside EOF */
140 if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
141 i_size_read(inode)) {
142 loff_t offset;
143
144 offset = i_size_read(inode) & ~PAGE_MASK;
145 zero_user_segment(page, offset, PAGE_SIZE);
146 }
147 set_page_dirty(page);
148 if (!PageUptodate(page))
149 SetPageUptodate(page);
150
151 f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE);
152 f2fs_update_time(sbi, REQ_TIME);
153
154 trace_f2fs_vm_page_mkwrite(page, DATA);
155out_sem:
156 up_read(&F2FS_I(inode)->i_mmap_sem);
157
158 sb_end_pagefault(inode->i_sb);
159err:
160 return block_page_mkwrite_return(err);
161}
162
163static const struct vm_operations_struct f2fs_file_vm_ops = {
164 .fault = f2fs_filemap_fault,
165 .map_pages = filemap_map_pages,
166 .page_mkwrite = f2fs_vm_page_mkwrite,
167};
168
169static int get_parent_ino(struct inode *inode, nid_t *pino)
170{
171 struct dentry *dentry;
172
173 /*
174 * Make sure to get the non-deleted alias. The alias associated with
175 * the open file descriptor being fsync()'ed may be deleted already.
176 */
177 dentry = d_find_alias(inode);
178 if (!dentry)
179 return 0;
180
181 *pino = parent_ino(dentry);
182 dput(dentry);
183 return 1;
184}
185
186static inline enum cp_reason_type need_do_checkpoint(struct inode *inode)
187{
188 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
189 enum cp_reason_type cp_reason = CP_NO_NEEDED;
190
191 if (!S_ISREG(inode->i_mode))
192 cp_reason = CP_NON_REGULAR;
193 else if (f2fs_compressed_file(inode))
194 cp_reason = CP_COMPRESSED;
195 else if (inode->i_nlink != 1)
196 cp_reason = CP_HARDLINK;
197 else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
198 cp_reason = CP_SB_NEED_CP;
199 else if (file_wrong_pino(inode))
200 cp_reason = CP_WRONG_PINO;
201 else if (!f2fs_space_for_roll_forward(sbi))
202 cp_reason = CP_NO_SPC_ROLL;
203 else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
204 cp_reason = CP_NODE_NEED_CP;
205 else if (test_opt(sbi, FASTBOOT))
206 cp_reason = CP_FASTBOOT_MODE;
207 else if (F2FS_OPTION(sbi).active_logs == 2)
208 cp_reason = CP_SPEC_LOG_NUM;
209 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT &&
210 f2fs_need_dentry_mark(sbi, inode->i_ino) &&
211 f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino,
212 TRANS_DIR_INO))
213 cp_reason = CP_RECOVER_DIR;
214
215 return cp_reason;
216}
217
218static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
219{
220 struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
221 bool ret = false;
222 /* But we need to avoid that there are some inode updates */
223 if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino))
224 ret = true;
225 f2fs_put_page(i, 0);
226 return ret;
227}
228
229static void try_to_fix_pino(struct inode *inode)
230{
231 struct f2fs_inode_info *fi = F2FS_I(inode);
232 nid_t pino;
233
234 down_write(&fi->i_sem);
235 if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
236 get_parent_ino(inode, &pino)) {
237 f2fs_i_pino_write(inode, pino);
238 file_got_pino(inode);
239 }
240 up_write(&fi->i_sem);
241}
242
243static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
244 int datasync, bool atomic)
245{
246 struct inode *inode = file->f_mapping->host;
247 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
248 nid_t ino = inode->i_ino;
249 int ret = 0;
250 enum cp_reason_type cp_reason = 0;
251 struct writeback_control wbc = {
252 .sync_mode = WB_SYNC_ALL,
253 .nr_to_write = LONG_MAX,
254 .for_reclaim = 0,
255 };
256 unsigned int seq_id = 0;
257
258 if (unlikely(f2fs_readonly(inode->i_sb) ||
259 is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
260 return 0;
261
262 trace_f2fs_sync_file_enter(inode);
263
264 if (S_ISDIR(inode->i_mode))
265 goto go_write;
266
267 /* if fdatasync is triggered, let's do in-place-update */
268 if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
269 set_inode_flag(inode, FI_NEED_IPU);
270 ret = file_write_and_wait_range(file, start, end);
271 clear_inode_flag(inode, FI_NEED_IPU);
272
273 if (ret) {
274 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
275 return ret;
276 }
277
278 /* if the inode is dirty, let's recover all the time */
279 if (!f2fs_skip_inode_update(inode, datasync)) {
280 f2fs_write_inode(inode, NULL);
281 goto go_write;
282 }
283
284 /*
285 * if there is no written data, don't waste time to write recovery info.
286 */
287 if (!is_inode_flag_set(inode, FI_APPEND_WRITE) &&
288 !f2fs_exist_written_data(sbi, ino, APPEND_INO)) {
289
290 /* it may call write_inode just prior to fsync */
291 if (need_inode_page_update(sbi, ino))
292 goto go_write;
293
294 if (is_inode_flag_set(inode, FI_UPDATE_WRITE) ||
295 f2fs_exist_written_data(sbi, ino, UPDATE_INO))
296 goto flush_out;
297 goto out;
298 }
299go_write:
300 /*
301 * Both of fdatasync() and fsync() are able to be recovered from
302 * sudden-power-off.
303 */
304 down_read(&F2FS_I(inode)->i_sem);
305 cp_reason = need_do_checkpoint(inode);
306 up_read(&F2FS_I(inode)->i_sem);
307
308 if (cp_reason) {
309 /* all the dirty node pages should be flushed for POR */
310 ret = f2fs_sync_fs(inode->i_sb, 1);
311
312 /*
313 * We've secured consistency through sync_fs. Following pino
314 * will be used only for fsynced inodes after checkpoint.
315 */
316 try_to_fix_pino(inode);
317 clear_inode_flag(inode, FI_APPEND_WRITE);
318 clear_inode_flag(inode, FI_UPDATE_WRITE);
319 goto out;
320 }
321sync_nodes:
322 atomic_inc(&sbi->wb_sync_req[NODE]);
323 ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic, &seq_id);
324 atomic_dec(&sbi->wb_sync_req[NODE]);
325 if (ret)
326 goto out;
327
328 /* if cp_error was enabled, we should avoid infinite loop */
329 if (unlikely(f2fs_cp_error(sbi))) {
330 ret = -EIO;
331 goto out;
332 }
333
334 if (f2fs_need_inode_block_update(sbi, ino)) {
335 f2fs_mark_inode_dirty_sync(inode, true);
336 f2fs_write_inode(inode, NULL);
337 goto sync_nodes;
338 }
339
340 /*
341 * If it's atomic_write, it's just fine to keep write ordering. So
342 * here we don't need to wait for node write completion, since we use
343 * node chain which serializes node blocks. If one of node writes are
344 * reordered, we can see simply broken chain, resulting in stopping
345 * roll-forward recovery. It means we'll recover all or none node blocks
346 * given fsync mark.
347 */
348 if (!atomic) {
349 ret = f2fs_wait_on_node_pages_writeback(sbi, seq_id);
350 if (ret)
351 goto out;
352 }
353
354 /* once recovery info is written, don't need to tack this */
355 f2fs_remove_ino_entry(sbi, ino, APPEND_INO);
356 clear_inode_flag(inode, FI_APPEND_WRITE);
357flush_out:
358 if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER)
359 ret = f2fs_issue_flush(sbi, inode->i_ino);
360 if (!ret) {
361 f2fs_remove_ino_entry(sbi, ino, UPDATE_INO);
362 clear_inode_flag(inode, FI_UPDATE_WRITE);
363 f2fs_remove_ino_entry(sbi, ino, FLUSH_INO);
364 }
365 f2fs_update_time(sbi, REQ_TIME);
366out:
367 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
368 f2fs_trace_ios(NULL, 1);
369 return ret;
370}
371
372int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
373{
374 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
375 return -EIO;
376 return f2fs_do_sync_file(file, start, end, datasync, false);
377}
378
379static pgoff_t __get_first_dirty_index(struct address_space *mapping,
380 pgoff_t pgofs, int whence)
381{
382 struct page *page;
383 int nr_pages;
384
385 if (whence != SEEK_DATA)
386 return 0;
387
388 /* find first dirty page index */
389 nr_pages = find_get_pages_tag(mapping, &pgofs, PAGECACHE_TAG_DIRTY,
390 1, &page);
391 if (!nr_pages)
392 return ULONG_MAX;
393 pgofs = page->index;
394 put_page(page);
395 return pgofs;
396}
397
398static bool __found_offset(struct f2fs_sb_info *sbi, block_t blkaddr,
399 pgoff_t dirty, pgoff_t pgofs, int whence)
400{
401 switch (whence) {
402 case SEEK_DATA:
403 if ((blkaddr == NEW_ADDR && dirty == pgofs) ||
404 __is_valid_data_blkaddr(blkaddr))
405 return true;
406 break;
407 case SEEK_HOLE:
408 if (blkaddr == NULL_ADDR)
409 return true;
410 break;
411 }
412 return false;
413}
414
415static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
416{
417 struct inode *inode = file->f_mapping->host;
418 loff_t maxbytes = inode->i_sb->s_maxbytes;
419 struct dnode_of_data dn;
420 pgoff_t pgofs, end_offset, dirty;
421 loff_t data_ofs = offset;
422 loff_t isize;
423 int err = 0;
424
425 inode_lock(inode);
426
427 isize = i_size_read(inode);
428 if (offset >= isize)
429 goto fail;
430
431 /* handle inline data case */
432 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) {
433 if (whence == SEEK_HOLE)
434 data_ofs = isize;
435 goto found;
436 }
437
438 pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
439
440 dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence);
441
442 for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
443 set_new_dnode(&dn, inode, NULL, NULL, 0);
444 err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
445 if (err && err != -ENOENT) {
446 goto fail;
447 } else if (err == -ENOENT) {
448 /* direct node does not exists */
449 if (whence == SEEK_DATA) {
450 pgofs = f2fs_get_next_page_offset(&dn, pgofs);
451 continue;
452 } else {
453 goto found;
454 }
455 }
456
457 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
458
459 /* find data/hole in dnode block */
460 for (; dn.ofs_in_node < end_offset;
461 dn.ofs_in_node++, pgofs++,
462 data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
463 block_t blkaddr;
464
465 blkaddr = f2fs_data_blkaddr(&dn);
466
467 if (__is_valid_data_blkaddr(blkaddr) &&
468 !f2fs_is_valid_blkaddr(F2FS_I_SB(inode),
469 blkaddr, DATA_GENERIC_ENHANCE)) {
470 f2fs_put_dnode(&dn);
471 goto fail;
472 }
473
474 if (__found_offset(F2FS_I_SB(inode), blkaddr, dirty,
475 pgofs, whence)) {
476 f2fs_put_dnode(&dn);
477 goto found;
478 }
479 }
480 f2fs_put_dnode(&dn);
481 }
482
483 if (whence == SEEK_DATA)
484 goto fail;
485found:
486 if (whence == SEEK_HOLE && data_ofs > isize)
487 data_ofs = isize;
488 inode_unlock(inode);
489 return vfs_setpos(file, data_ofs, maxbytes);
490fail:
491 inode_unlock(inode);
492 return -ENXIO;
493}
494
495static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
496{
497 struct inode *inode = file->f_mapping->host;
498 loff_t maxbytes = inode->i_sb->s_maxbytes;
499
500 switch (whence) {
501 case SEEK_SET:
502 case SEEK_CUR:
503 case SEEK_END:
504 return generic_file_llseek_size(file, offset, whence,
505 maxbytes, i_size_read(inode));
506 case SEEK_DATA:
507 case SEEK_HOLE:
508 if (offset < 0)
509 return -ENXIO;
510 return f2fs_seek_block(file, offset, whence);
511 }
512
513 return -EINVAL;
514}
515
516static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
517{
518 struct inode *inode = file_inode(file);
519 int err;
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 /* we don't need to use inline_data strictly */
528 err = f2fs_convert_inline_inode(inode);
529 if (err)
530 return err;
531
532 file_accessed(file);
533 vma->vm_ops = &f2fs_file_vm_ops;
534 set_inode_flag(inode, FI_MMAP_FILE);
535 return 0;
536}
537
538static int f2fs_file_open(struct inode *inode, struct file *filp)
539{
540 int err = fscrypt_file_open(inode, filp);
541
542 if (err)
543 return err;
544
545 if (!f2fs_is_compress_backend_ready(inode))
546 return -EOPNOTSUPP;
547
548 err = fsverity_file_open(inode, filp);
549 if (err)
550 return err;
551
552 filp->f_mode |= FMODE_NOWAIT;
553
554 return dquot_file_open(inode, filp);
555}
556
557void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count)
558{
559 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
560 struct f2fs_node *raw_node;
561 int nr_free = 0, ofs = dn->ofs_in_node, len = count;
562 __le32 *addr;
563 int base = 0;
564 bool compressed_cluster = false;
565 int cluster_index = 0, valid_blocks = 0;
566 int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
567 bool released = !F2FS_I(dn->inode)->i_compr_blocks;
568
569 if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode))
570 base = get_extra_isize(dn->inode);
571
572 raw_node = F2FS_NODE(dn->node_page);
573 addr = blkaddr_in_node(raw_node) + base + ofs;
574
575 /* Assumption: truncateion starts with cluster */
576 for (; count > 0; count--, addr++, dn->ofs_in_node++, cluster_index++) {
577 block_t blkaddr = le32_to_cpu(*addr);
578
579 if (f2fs_compressed_file(dn->inode) &&
580 !(cluster_index & (cluster_size - 1))) {
581 if (compressed_cluster)
582 f2fs_i_compr_blocks_update(dn->inode,
583 valid_blocks, false);
584 compressed_cluster = (blkaddr == COMPRESS_ADDR);
585 valid_blocks = 0;
586 }
587
588 if (blkaddr == NULL_ADDR)
589 continue;
590
591 dn->data_blkaddr = NULL_ADDR;
592 f2fs_set_data_blkaddr(dn);
593
594 if (__is_valid_data_blkaddr(blkaddr)) {
595 if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
596 DATA_GENERIC_ENHANCE))
597 continue;
598 if (compressed_cluster)
599 valid_blocks++;
600 }
601
602 if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page))
603 clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN);
604
605 f2fs_invalidate_blocks(sbi, blkaddr);
606
607 if (!released || blkaddr != COMPRESS_ADDR)
608 nr_free++;
609 }
610
611 if (compressed_cluster)
612 f2fs_i_compr_blocks_update(dn->inode, valid_blocks, false);
613
614 if (nr_free) {
615 pgoff_t fofs;
616 /*
617 * once we invalidate valid blkaddr in range [ofs, ofs + count],
618 * we will invalidate all blkaddr in the whole range.
619 */
620 fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page),
621 dn->inode) + ofs;
622 f2fs_update_extent_cache_range(dn, fofs, 0, len);
623 dec_valid_block_count(sbi, dn->inode, nr_free);
624 }
625 dn->ofs_in_node = ofs;
626
627 f2fs_update_time(sbi, REQ_TIME);
628 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
629 dn->ofs_in_node, nr_free);
630}
631
632void f2fs_truncate_data_blocks(struct dnode_of_data *dn)
633{
634 f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK(dn->inode));
635}
636
637static int truncate_partial_data_page(struct inode *inode, u64 from,
638 bool cache_only)
639{
640 loff_t offset = from & (PAGE_SIZE - 1);
641 pgoff_t index = from >> PAGE_SHIFT;
642 struct address_space *mapping = inode->i_mapping;
643 struct page *page;
644
645 if (!offset && !cache_only)
646 return 0;
647
648 if (cache_only) {
649 page = find_lock_page(mapping, index);
650 if (page && PageUptodate(page))
651 goto truncate_out;
652 f2fs_put_page(page, 1);
653 return 0;
654 }
655
656 page = f2fs_get_lock_data_page(inode, index, true);
657 if (IS_ERR(page))
658 return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
659truncate_out:
660 f2fs_wait_on_page_writeback(page, DATA, true, true);
661 zero_user(page, offset, PAGE_SIZE - offset);
662
663 /* An encrypted inode should have a key and truncate the last page. */
664 f2fs_bug_on(F2FS_I_SB(inode), cache_only && IS_ENCRYPTED(inode));
665 if (!cache_only)
666 set_page_dirty(page);
667 f2fs_put_page(page, 1);
668 return 0;
669}
670
671int f2fs_do_truncate_blocks(struct inode *inode, u64 from, bool lock)
672{
673 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
674 struct dnode_of_data dn;
675 pgoff_t free_from;
676 int count = 0, err = 0;
677 struct page *ipage;
678 bool truncate_page = false;
679
680 trace_f2fs_truncate_blocks_enter(inode, from);
681
682 free_from = (pgoff_t)F2FS_BLK_ALIGN(from);
683
684 if (free_from >= sbi->max_file_blocks)
685 goto free_partial;
686
687 if (lock)
688 f2fs_lock_op(sbi);
689
690 ipage = f2fs_get_node_page(sbi, inode->i_ino);
691 if (IS_ERR(ipage)) {
692 err = PTR_ERR(ipage);
693 goto out;
694 }
695
696 if (f2fs_has_inline_data(inode)) {
697 f2fs_truncate_inline_inode(inode, ipage, from);
698 f2fs_put_page(ipage, 1);
699 truncate_page = true;
700 goto out;
701 }
702
703 set_new_dnode(&dn, inode, ipage, NULL, 0);
704 err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
705 if (err) {
706 if (err == -ENOENT)
707 goto free_next;
708 goto out;
709 }
710
711 count = ADDRS_PER_PAGE(dn.node_page, inode);
712
713 count -= dn.ofs_in_node;
714 f2fs_bug_on(sbi, count < 0);
715
716 if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
717 f2fs_truncate_data_blocks_range(&dn, count);
718 free_from += count;
719 }
720
721 f2fs_put_dnode(&dn);
722free_next:
723 err = f2fs_truncate_inode_blocks(inode, free_from);
724out:
725 if (lock)
726 f2fs_unlock_op(sbi);
727free_partial:
728 /* lastly zero out the first data page */
729 if (!err)
730 err = truncate_partial_data_page(inode, from, truncate_page);
731
732 trace_f2fs_truncate_blocks_exit(inode, err);
733 return err;
734}
735
736int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock)
737{
738 u64 free_from = from;
739 int err;
740
741#ifdef CONFIG_F2FS_FS_COMPRESSION
742 /*
743 * for compressed file, only support cluster size
744 * aligned truncation.
745 */
746 if (f2fs_compressed_file(inode))
747 free_from = round_up(from,
748 F2FS_I(inode)->i_cluster_size << PAGE_SHIFT);
749#endif
750
751 err = f2fs_do_truncate_blocks(inode, free_from, lock);
752 if (err)
753 return err;
754
755#ifdef CONFIG_F2FS_FS_COMPRESSION
756 if (from != free_from)
757 err = f2fs_truncate_partial_cluster(inode, from, lock);
758#endif
759
760 return err;
761}
762
763int f2fs_truncate(struct inode *inode)
764{
765 int err;
766
767 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
768 return -EIO;
769
770 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
771 S_ISLNK(inode->i_mode)))
772 return 0;
773
774 trace_f2fs_truncate(inode);
775
776 if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) {
777 f2fs_show_injection_info(F2FS_I_SB(inode), FAULT_TRUNCATE);
778 return -EIO;
779 }
780
781 /* we should check inline_data size */
782 if (!f2fs_may_inline_data(inode)) {
783 err = f2fs_convert_inline_inode(inode);
784 if (err)
785 return err;
786 }
787
788 err = f2fs_truncate_blocks(inode, i_size_read(inode), true);
789 if (err)
790 return err;
791
792 inode->i_mtime = inode->i_ctime = current_time(inode);
793 f2fs_mark_inode_dirty_sync(inode, false);
794 return 0;
795}
796
797int f2fs_getattr(const struct path *path, struct kstat *stat,
798 u32 request_mask, unsigned int query_flags)
799{
800 struct inode *inode = d_inode(path->dentry);
801 struct f2fs_inode_info *fi = F2FS_I(inode);
802 struct f2fs_inode *ri;
803 unsigned int flags;
804
805 if (f2fs_has_extra_attr(inode) &&
806 f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
807 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
808 stat->result_mask |= STATX_BTIME;
809 stat->btime.tv_sec = fi->i_crtime.tv_sec;
810 stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
811 }
812
813 flags = fi->i_flags;
814 if (flags & F2FS_COMPR_FL)
815 stat->attributes |= STATX_ATTR_COMPRESSED;
816 if (flags & F2FS_APPEND_FL)
817 stat->attributes |= STATX_ATTR_APPEND;
818 if (IS_ENCRYPTED(inode))
819 stat->attributes |= STATX_ATTR_ENCRYPTED;
820 if (flags & F2FS_IMMUTABLE_FL)
821 stat->attributes |= STATX_ATTR_IMMUTABLE;
822 if (flags & F2FS_NODUMP_FL)
823 stat->attributes |= STATX_ATTR_NODUMP;
824 if (IS_VERITY(inode))
825 stat->attributes |= STATX_ATTR_VERITY;
826
827 stat->attributes_mask |= (STATX_ATTR_COMPRESSED |
828 STATX_ATTR_APPEND |
829 STATX_ATTR_ENCRYPTED |
830 STATX_ATTR_IMMUTABLE |
831 STATX_ATTR_NODUMP |
832 STATX_ATTR_VERITY);
833
834 generic_fillattr(inode, stat);
835
836 /* we need to show initial sectors used for inline_data/dentries */
837 if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) ||
838 f2fs_has_inline_dentry(inode))
839 stat->blocks += (stat->size + 511) >> 9;
840
841 return 0;
842}
843
844#ifdef CONFIG_F2FS_FS_POSIX_ACL
845static void __setattr_copy(struct inode *inode, const struct iattr *attr)
846{
847 unsigned int ia_valid = attr->ia_valid;
848
849 if (ia_valid & ATTR_UID)
850 inode->i_uid = attr->ia_uid;
851 if (ia_valid & ATTR_GID)
852 inode->i_gid = attr->ia_gid;
853 if (ia_valid & ATTR_ATIME)
854 inode->i_atime = attr->ia_atime;
855 if (ia_valid & ATTR_MTIME)
856 inode->i_mtime = attr->ia_mtime;
857 if (ia_valid & ATTR_CTIME)
858 inode->i_ctime = attr->ia_ctime;
859 if (ia_valid & ATTR_MODE) {
860 umode_t mode = attr->ia_mode;
861
862 if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
863 mode &= ~S_ISGID;
864 set_acl_inode(inode, mode);
865 }
866}
867#else
868#define __setattr_copy setattr_copy
869#endif
870
871int f2fs_setattr(struct dentry *dentry, struct iattr *attr)
872{
873 struct inode *inode = d_inode(dentry);
874 int err;
875
876 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
877 return -EIO;
878
879 if ((attr->ia_valid & ATTR_SIZE) &&
880 !f2fs_is_compress_backend_ready(inode))
881 return -EOPNOTSUPP;
882
883 err = setattr_prepare(dentry, attr);
884 if (err)
885 return err;
886
887 err = fscrypt_prepare_setattr(dentry, attr);
888 if (err)
889 return err;
890
891 err = fsverity_prepare_setattr(dentry, attr);
892 if (err)
893 return err;
894
895 if (is_quota_modification(inode, attr)) {
896 err = dquot_initialize(inode);
897 if (err)
898 return err;
899 }
900 if ((attr->ia_valid & ATTR_UID &&
901 !uid_eq(attr->ia_uid, inode->i_uid)) ||
902 (attr->ia_valid & ATTR_GID &&
903 !gid_eq(attr->ia_gid, inode->i_gid))) {
904 f2fs_lock_op(F2FS_I_SB(inode));
905 err = dquot_transfer(inode, attr);
906 if (err) {
907 set_sbi_flag(F2FS_I_SB(inode),
908 SBI_QUOTA_NEED_REPAIR);
909 f2fs_unlock_op(F2FS_I_SB(inode));
910 return err;
911 }
912 /*
913 * update uid/gid under lock_op(), so that dquot and inode can
914 * be updated atomically.
915 */
916 if (attr->ia_valid & ATTR_UID)
917 inode->i_uid = attr->ia_uid;
918 if (attr->ia_valid & ATTR_GID)
919 inode->i_gid = attr->ia_gid;
920 f2fs_mark_inode_dirty_sync(inode, true);
921 f2fs_unlock_op(F2FS_I_SB(inode));
922 }
923
924 if (attr->ia_valid & ATTR_SIZE) {
925 loff_t old_size = i_size_read(inode);
926
927 if (attr->ia_size > MAX_INLINE_DATA(inode)) {
928 /*
929 * should convert inline inode before i_size_write to
930 * keep smaller than inline_data size with inline flag.
931 */
932 err = f2fs_convert_inline_inode(inode);
933 if (err)
934 return err;
935 }
936
937 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
938 down_write(&F2FS_I(inode)->i_mmap_sem);
939
940 truncate_setsize(inode, attr->ia_size);
941
942 if (attr->ia_size <= old_size)
943 err = f2fs_truncate(inode);
944 /*
945 * do not trim all blocks after i_size if target size is
946 * larger than i_size.
947 */
948 up_write(&F2FS_I(inode)->i_mmap_sem);
949 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
950 if (err)
951 return err;
952
953 spin_lock(&F2FS_I(inode)->i_size_lock);
954 inode->i_mtime = inode->i_ctime = current_time(inode);
955 F2FS_I(inode)->last_disk_size = i_size_read(inode);
956 spin_unlock(&F2FS_I(inode)->i_size_lock);
957 }
958
959 __setattr_copy(inode, attr);
960
961 if (attr->ia_valid & ATTR_MODE) {
962 err = posix_acl_chmod(inode, f2fs_get_inode_mode(inode));
963 if (err || is_inode_flag_set(inode, FI_ACL_MODE)) {
964 inode->i_mode = F2FS_I(inode)->i_acl_mode;
965 clear_inode_flag(inode, FI_ACL_MODE);
966 }
967 }
968
969 /* file size may changed here */
970 f2fs_mark_inode_dirty_sync(inode, true);
971
972 /* inode change will produce dirty node pages flushed by checkpoint */
973 f2fs_balance_fs(F2FS_I_SB(inode), true);
974
975 return err;
976}
977
978const struct inode_operations f2fs_file_inode_operations = {
979 .getattr = f2fs_getattr,
980 .setattr = f2fs_setattr,
981 .get_acl = f2fs_get_acl,
982 .set_acl = f2fs_set_acl,
983 .listxattr = f2fs_listxattr,
984 .fiemap = f2fs_fiemap,
985};
986
987static int fill_zero(struct inode *inode, pgoff_t index,
988 loff_t start, loff_t len)
989{
990 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
991 struct page *page;
992
993 if (!len)
994 return 0;
995
996 f2fs_balance_fs(sbi, true);
997
998 f2fs_lock_op(sbi);
999 page = f2fs_get_new_data_page(inode, NULL, index, false);
1000 f2fs_unlock_op(sbi);
1001
1002 if (IS_ERR(page))
1003 return PTR_ERR(page);
1004
1005 f2fs_wait_on_page_writeback(page, DATA, true, true);
1006 zero_user(page, start, len);
1007 set_page_dirty(page);
1008 f2fs_put_page(page, 1);
1009 return 0;
1010}
1011
1012int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
1013{
1014 int err;
1015
1016 while (pg_start < pg_end) {
1017 struct dnode_of_data dn;
1018 pgoff_t end_offset, count;
1019
1020 set_new_dnode(&dn, inode, NULL, NULL, 0);
1021 err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
1022 if (err) {
1023 if (err == -ENOENT) {
1024 pg_start = f2fs_get_next_page_offset(&dn,
1025 pg_start);
1026 continue;
1027 }
1028 return err;
1029 }
1030
1031 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1032 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
1033
1034 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
1035
1036 f2fs_truncate_data_blocks_range(&dn, count);
1037 f2fs_put_dnode(&dn);
1038
1039 pg_start += count;
1040 }
1041 return 0;
1042}
1043
1044static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
1045{
1046 pgoff_t pg_start, pg_end;
1047 loff_t off_start, off_end;
1048 int ret;
1049
1050 ret = f2fs_convert_inline_inode(inode);
1051 if (ret)
1052 return ret;
1053
1054 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1055 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
1056
1057 off_start = offset & (PAGE_SIZE - 1);
1058 off_end = (offset + len) & (PAGE_SIZE - 1);
1059
1060 if (pg_start == pg_end) {
1061 ret = fill_zero(inode, pg_start, off_start,
1062 off_end - off_start);
1063 if (ret)
1064 return ret;
1065 } else {
1066 if (off_start) {
1067 ret = fill_zero(inode, pg_start++, off_start,
1068 PAGE_SIZE - off_start);
1069 if (ret)
1070 return ret;
1071 }
1072 if (off_end) {
1073 ret = fill_zero(inode, pg_end, 0, off_end);
1074 if (ret)
1075 return ret;
1076 }
1077
1078 if (pg_start < pg_end) {
1079 struct address_space *mapping = inode->i_mapping;
1080 loff_t blk_start, blk_end;
1081 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1082
1083 f2fs_balance_fs(sbi, true);
1084
1085 blk_start = (loff_t)pg_start << PAGE_SHIFT;
1086 blk_end = (loff_t)pg_end << PAGE_SHIFT;
1087
1088 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1089 down_write(&F2FS_I(inode)->i_mmap_sem);
1090
1091 truncate_inode_pages_range(mapping, blk_start,
1092 blk_end - 1);
1093
1094 f2fs_lock_op(sbi);
1095 ret = f2fs_truncate_hole(inode, pg_start, pg_end);
1096 f2fs_unlock_op(sbi);
1097
1098 up_write(&F2FS_I(inode)->i_mmap_sem);
1099 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1100 }
1101 }
1102
1103 return ret;
1104}
1105
1106static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr,
1107 int *do_replace, pgoff_t off, pgoff_t len)
1108{
1109 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1110 struct dnode_of_data dn;
1111 int ret, done, i;
1112
1113next_dnode:
1114 set_new_dnode(&dn, inode, NULL, NULL, 0);
1115 ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA);
1116 if (ret && ret != -ENOENT) {
1117 return ret;
1118 } else if (ret == -ENOENT) {
1119 if (dn.max_level == 0)
1120 return -ENOENT;
1121 done = min((pgoff_t)ADDRS_PER_BLOCK(inode) -
1122 dn.ofs_in_node, len);
1123 blkaddr += done;
1124 do_replace += done;
1125 goto next;
1126 }
1127
1128 done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) -
1129 dn.ofs_in_node, len);
1130 for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) {
1131 *blkaddr = f2fs_data_blkaddr(&dn);
1132
1133 if (__is_valid_data_blkaddr(*blkaddr) &&
1134 !f2fs_is_valid_blkaddr(sbi, *blkaddr,
1135 DATA_GENERIC_ENHANCE)) {
1136 f2fs_put_dnode(&dn);
1137 return -EFSCORRUPTED;
1138 }
1139
1140 if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) {
1141
1142 if (f2fs_lfs_mode(sbi)) {
1143 f2fs_put_dnode(&dn);
1144 return -EOPNOTSUPP;
1145 }
1146
1147 /* do not invalidate this block address */
1148 f2fs_update_data_blkaddr(&dn, NULL_ADDR);
1149 *do_replace = 1;
1150 }
1151 }
1152 f2fs_put_dnode(&dn);
1153next:
1154 len -= done;
1155 off += done;
1156 if (len)
1157 goto next_dnode;
1158 return 0;
1159}
1160
1161static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr,
1162 int *do_replace, pgoff_t off, int len)
1163{
1164 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1165 struct dnode_of_data dn;
1166 int ret, i;
1167
1168 for (i = 0; i < len; i++, do_replace++, blkaddr++) {
1169 if (*do_replace == 0)
1170 continue;
1171
1172 set_new_dnode(&dn, inode, NULL, NULL, 0);
1173 ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA);
1174 if (ret) {
1175 dec_valid_block_count(sbi, inode, 1);
1176 f2fs_invalidate_blocks(sbi, *blkaddr);
1177 } else {
1178 f2fs_update_data_blkaddr(&dn, *blkaddr);
1179 }
1180 f2fs_put_dnode(&dn);
1181 }
1182 return 0;
1183}
1184
1185static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode,
1186 block_t *blkaddr, int *do_replace,
1187 pgoff_t src, pgoff_t dst, pgoff_t len, bool full)
1188{
1189 struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode);
1190 pgoff_t i = 0;
1191 int ret;
1192
1193 while (i < len) {
1194 if (blkaddr[i] == NULL_ADDR && !full) {
1195 i++;
1196 continue;
1197 }
1198
1199 if (do_replace[i] || blkaddr[i] == NULL_ADDR) {
1200 struct dnode_of_data dn;
1201 struct node_info ni;
1202 size_t new_size;
1203 pgoff_t ilen;
1204
1205 set_new_dnode(&dn, dst_inode, NULL, NULL, 0);
1206 ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE);
1207 if (ret)
1208 return ret;
1209
1210 ret = f2fs_get_node_info(sbi, dn.nid, &ni);
1211 if (ret) {
1212 f2fs_put_dnode(&dn);
1213 return ret;
1214 }
1215
1216 ilen = min((pgoff_t)
1217 ADDRS_PER_PAGE(dn.node_page, dst_inode) -
1218 dn.ofs_in_node, len - i);
1219 do {
1220 dn.data_blkaddr = f2fs_data_blkaddr(&dn);
1221 f2fs_truncate_data_blocks_range(&dn, 1);
1222
1223 if (do_replace[i]) {
1224 f2fs_i_blocks_write(src_inode,
1225 1, false, false);
1226 f2fs_i_blocks_write(dst_inode,
1227 1, true, false);
1228 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
1229 blkaddr[i], ni.version, true, false);
1230
1231 do_replace[i] = 0;
1232 }
1233 dn.ofs_in_node++;
1234 i++;
1235 new_size = (loff_t)(dst + i) << PAGE_SHIFT;
1236 if (dst_inode->i_size < new_size)
1237 f2fs_i_size_write(dst_inode, new_size);
1238 } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR));
1239
1240 f2fs_put_dnode(&dn);
1241 } else {
1242 struct page *psrc, *pdst;
1243
1244 psrc = f2fs_get_lock_data_page(src_inode,
1245 src + i, true);
1246 if (IS_ERR(psrc))
1247 return PTR_ERR(psrc);
1248 pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i,
1249 true);
1250 if (IS_ERR(pdst)) {
1251 f2fs_put_page(psrc, 1);
1252 return PTR_ERR(pdst);
1253 }
1254 f2fs_copy_page(psrc, pdst);
1255 set_page_dirty(pdst);
1256 f2fs_put_page(pdst, 1);
1257 f2fs_put_page(psrc, 1);
1258
1259 ret = f2fs_truncate_hole(src_inode,
1260 src + i, src + i + 1);
1261 if (ret)
1262 return ret;
1263 i++;
1264 }
1265 }
1266 return 0;
1267}
1268
1269static int __exchange_data_block(struct inode *src_inode,
1270 struct inode *dst_inode, pgoff_t src, pgoff_t dst,
1271 pgoff_t len, bool full)
1272{
1273 block_t *src_blkaddr;
1274 int *do_replace;
1275 pgoff_t olen;
1276 int ret;
1277
1278 while (len) {
1279 olen = min((pgoff_t)4 * ADDRS_PER_BLOCK(src_inode), len);
1280
1281 src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1282 array_size(olen, sizeof(block_t)),
1283 GFP_NOFS);
1284 if (!src_blkaddr)
1285 return -ENOMEM;
1286
1287 do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1288 array_size(olen, sizeof(int)),
1289 GFP_NOFS);
1290 if (!do_replace) {
1291 kvfree(src_blkaddr);
1292 return -ENOMEM;
1293 }
1294
1295 ret = __read_out_blkaddrs(src_inode, src_blkaddr,
1296 do_replace, src, olen);
1297 if (ret)
1298 goto roll_back;
1299
1300 ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr,
1301 do_replace, src, dst, olen, full);
1302 if (ret)
1303 goto roll_back;
1304
1305 src += olen;
1306 dst += olen;
1307 len -= olen;
1308
1309 kvfree(src_blkaddr);
1310 kvfree(do_replace);
1311 }
1312 return 0;
1313
1314roll_back:
1315 __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen);
1316 kvfree(src_blkaddr);
1317 kvfree(do_replace);
1318 return ret;
1319}
1320
1321static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len)
1322{
1323 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1324 pgoff_t nrpages = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
1325 pgoff_t start = offset >> PAGE_SHIFT;
1326 pgoff_t end = (offset + len) >> PAGE_SHIFT;
1327 int ret;
1328
1329 f2fs_balance_fs(sbi, true);
1330
1331 /* avoid gc operation during block exchange */
1332 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1333 down_write(&F2FS_I(inode)->i_mmap_sem);
1334
1335 f2fs_lock_op(sbi);
1336 f2fs_drop_extent_tree(inode);
1337 truncate_pagecache(inode, offset);
1338 ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
1339 f2fs_unlock_op(sbi);
1340
1341 up_write(&F2FS_I(inode)->i_mmap_sem);
1342 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1343 return ret;
1344}
1345
1346static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
1347{
1348 loff_t new_size;
1349 int ret;
1350
1351 if (offset + len >= i_size_read(inode))
1352 return -EINVAL;
1353
1354 /* collapse range should be aligned to block size of f2fs. */
1355 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1356 return -EINVAL;
1357
1358 ret = f2fs_convert_inline_inode(inode);
1359 if (ret)
1360 return ret;
1361
1362 /* write out all dirty pages from offset */
1363 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1364 if (ret)
1365 return ret;
1366
1367 ret = f2fs_do_collapse(inode, offset, len);
1368 if (ret)
1369 return ret;
1370
1371 /* write out all moved pages, if possible */
1372 down_write(&F2FS_I(inode)->i_mmap_sem);
1373 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1374 truncate_pagecache(inode, offset);
1375
1376 new_size = i_size_read(inode) - len;
1377 ret = f2fs_truncate_blocks(inode, new_size, true);
1378 up_write(&F2FS_I(inode)->i_mmap_sem);
1379 if (!ret)
1380 f2fs_i_size_write(inode, new_size);
1381 return ret;
1382}
1383
1384static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start,
1385 pgoff_t end)
1386{
1387 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1388 pgoff_t index = start;
1389 unsigned int ofs_in_node = dn->ofs_in_node;
1390 blkcnt_t count = 0;
1391 int ret;
1392
1393 for (; index < end; index++, dn->ofs_in_node++) {
1394 if (f2fs_data_blkaddr(dn) == NULL_ADDR)
1395 count++;
1396 }
1397
1398 dn->ofs_in_node = ofs_in_node;
1399 ret = f2fs_reserve_new_blocks(dn, count);
1400 if (ret)
1401 return ret;
1402
1403 dn->ofs_in_node = ofs_in_node;
1404 for (index = start; index < end; index++, dn->ofs_in_node++) {
1405 dn->data_blkaddr = f2fs_data_blkaddr(dn);
1406 /*
1407 * f2fs_reserve_new_blocks will not guarantee entire block
1408 * allocation.
1409 */
1410 if (dn->data_blkaddr == NULL_ADDR) {
1411 ret = -ENOSPC;
1412 break;
1413 }
1414 if (dn->data_blkaddr != NEW_ADDR) {
1415 f2fs_invalidate_blocks(sbi, dn->data_blkaddr);
1416 dn->data_blkaddr = NEW_ADDR;
1417 f2fs_set_data_blkaddr(dn);
1418 }
1419 }
1420
1421 f2fs_update_extent_cache_range(dn, start, 0, index - start);
1422
1423 return ret;
1424}
1425
1426static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
1427 int mode)
1428{
1429 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1430 struct address_space *mapping = inode->i_mapping;
1431 pgoff_t index, pg_start, pg_end;
1432 loff_t new_size = i_size_read(inode);
1433 loff_t off_start, off_end;
1434 int ret = 0;
1435
1436 ret = inode_newsize_ok(inode, (len + offset));
1437 if (ret)
1438 return ret;
1439
1440 ret = f2fs_convert_inline_inode(inode);
1441 if (ret)
1442 return ret;
1443
1444 ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
1445 if (ret)
1446 return ret;
1447
1448 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1449 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
1450
1451 off_start = offset & (PAGE_SIZE - 1);
1452 off_end = (offset + len) & (PAGE_SIZE - 1);
1453
1454 if (pg_start == pg_end) {
1455 ret = fill_zero(inode, pg_start, off_start,
1456 off_end - off_start);
1457 if (ret)
1458 return ret;
1459
1460 new_size = max_t(loff_t, new_size, offset + len);
1461 } else {
1462 if (off_start) {
1463 ret = fill_zero(inode, pg_start++, off_start,
1464 PAGE_SIZE - off_start);
1465 if (ret)
1466 return ret;
1467
1468 new_size = max_t(loff_t, new_size,
1469 (loff_t)pg_start << PAGE_SHIFT);
1470 }
1471
1472 for (index = pg_start; index < pg_end;) {
1473 struct dnode_of_data dn;
1474 unsigned int end_offset;
1475 pgoff_t end;
1476
1477 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1478 down_write(&F2FS_I(inode)->i_mmap_sem);
1479
1480 truncate_pagecache_range(inode,
1481 (loff_t)index << PAGE_SHIFT,
1482 ((loff_t)pg_end << PAGE_SHIFT) - 1);
1483
1484 f2fs_lock_op(sbi);
1485
1486 set_new_dnode(&dn, inode, NULL, NULL, 0);
1487 ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE);
1488 if (ret) {
1489 f2fs_unlock_op(sbi);
1490 up_write(&F2FS_I(inode)->i_mmap_sem);
1491 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1492 goto out;
1493 }
1494
1495 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1496 end = min(pg_end, end_offset - dn.ofs_in_node + index);
1497
1498 ret = f2fs_do_zero_range(&dn, index, end);
1499 f2fs_put_dnode(&dn);
1500
1501 f2fs_unlock_op(sbi);
1502 up_write(&F2FS_I(inode)->i_mmap_sem);
1503 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1504
1505 f2fs_balance_fs(sbi, dn.node_changed);
1506
1507 if (ret)
1508 goto out;
1509
1510 index = end;
1511 new_size = max_t(loff_t, new_size,
1512 (loff_t)index << PAGE_SHIFT);
1513 }
1514
1515 if (off_end) {
1516 ret = fill_zero(inode, pg_end, 0, off_end);
1517 if (ret)
1518 goto out;
1519
1520 new_size = max_t(loff_t, new_size, offset + len);
1521 }
1522 }
1523
1524out:
1525 if (new_size > i_size_read(inode)) {
1526 if (mode & FALLOC_FL_KEEP_SIZE)
1527 file_set_keep_isize(inode);
1528 else
1529 f2fs_i_size_write(inode, new_size);
1530 }
1531 return ret;
1532}
1533
1534static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
1535{
1536 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1537 pgoff_t nr, pg_start, pg_end, delta, idx;
1538 loff_t new_size;
1539 int ret = 0;
1540
1541 new_size = i_size_read(inode) + len;
1542 ret = inode_newsize_ok(inode, new_size);
1543 if (ret)
1544 return ret;
1545
1546 if (offset >= i_size_read(inode))
1547 return -EINVAL;
1548
1549 /* insert range should be aligned to block size of f2fs. */
1550 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1551 return -EINVAL;
1552
1553 ret = f2fs_convert_inline_inode(inode);
1554 if (ret)
1555 return ret;
1556
1557 f2fs_balance_fs(sbi, true);
1558
1559 down_write(&F2FS_I(inode)->i_mmap_sem);
1560 ret = f2fs_truncate_blocks(inode, i_size_read(inode), true);
1561 up_write(&F2FS_I(inode)->i_mmap_sem);
1562 if (ret)
1563 return ret;
1564
1565 /* write out all dirty pages from offset */
1566 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1567 if (ret)
1568 return ret;
1569
1570 pg_start = offset >> PAGE_SHIFT;
1571 pg_end = (offset + len) >> PAGE_SHIFT;
1572 delta = pg_end - pg_start;
1573 idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
1574
1575 /* avoid gc operation during block exchange */
1576 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1577 down_write(&F2FS_I(inode)->i_mmap_sem);
1578 truncate_pagecache(inode, offset);
1579
1580 while (!ret && idx > pg_start) {
1581 nr = idx - pg_start;
1582 if (nr > delta)
1583 nr = delta;
1584 idx -= nr;
1585
1586 f2fs_lock_op(sbi);
1587 f2fs_drop_extent_tree(inode);
1588
1589 ret = __exchange_data_block(inode, inode, idx,
1590 idx + delta, nr, false);
1591 f2fs_unlock_op(sbi);
1592 }
1593 up_write(&F2FS_I(inode)->i_mmap_sem);
1594 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1595
1596 /* write out all moved pages, if possible */
1597 down_write(&F2FS_I(inode)->i_mmap_sem);
1598 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1599 truncate_pagecache(inode, offset);
1600 up_write(&F2FS_I(inode)->i_mmap_sem);
1601
1602 if (!ret)
1603 f2fs_i_size_write(inode, new_size);
1604 return ret;
1605}
1606
1607static int expand_inode_data(struct inode *inode, loff_t offset,
1608 loff_t len, int mode)
1609{
1610 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1611 struct f2fs_map_blocks map = { .m_next_pgofs = NULL,
1612 .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE,
1613 .m_may_create = true };
1614 pgoff_t pg_end;
1615 loff_t new_size = i_size_read(inode);
1616 loff_t off_end;
1617 int err;
1618
1619 err = inode_newsize_ok(inode, (len + offset));
1620 if (err)
1621 return err;
1622
1623 err = f2fs_convert_inline_inode(inode);
1624 if (err)
1625 return err;
1626
1627 f2fs_balance_fs(sbi, true);
1628
1629 pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT;
1630 off_end = (offset + len) & (PAGE_SIZE - 1);
1631
1632 map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT;
1633 map.m_len = pg_end - map.m_lblk;
1634 if (off_end)
1635 map.m_len++;
1636
1637 if (!map.m_len)
1638 return 0;
1639
1640 if (f2fs_is_pinned_file(inode)) {
1641 block_t len = (map.m_len >> sbi->log_blocks_per_seg) <<
1642 sbi->log_blocks_per_seg;
1643 block_t done = 0;
1644
1645 if (map.m_len % sbi->blocks_per_seg)
1646 len += sbi->blocks_per_seg;
1647
1648 map.m_len = sbi->blocks_per_seg;
1649next_alloc:
1650 if (has_not_enough_free_secs(sbi, 0,
1651 GET_SEC_FROM_SEG(sbi, overprovision_segments(sbi)))) {
1652 down_write(&sbi->gc_lock);
1653 err = f2fs_gc(sbi, true, false, NULL_SEGNO);
1654 if (err && err != -ENODATA && err != -EAGAIN)
1655 goto out_err;
1656 }
1657
1658 down_write(&sbi->pin_sem);
1659 map.m_seg_type = CURSEG_COLD_DATA_PINNED;
1660
1661 f2fs_lock_op(sbi);
1662 f2fs_allocate_new_segment(sbi, CURSEG_COLD_DATA);
1663 f2fs_unlock_op(sbi);
1664
1665 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_DIO);
1666 up_write(&sbi->pin_sem);
1667
1668 done += map.m_len;
1669 len -= map.m_len;
1670 map.m_lblk += map.m_len;
1671 if (!err && len)
1672 goto next_alloc;
1673
1674 map.m_len = done;
1675 } else {
1676 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
1677 }
1678out_err:
1679 if (err) {
1680 pgoff_t last_off;
1681
1682 if (!map.m_len)
1683 return err;
1684
1685 last_off = map.m_lblk + map.m_len - 1;
1686
1687 /* update new size to the failed position */
1688 new_size = (last_off == pg_end) ? offset + len :
1689 (loff_t)(last_off + 1) << PAGE_SHIFT;
1690 } else {
1691 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
1692 }
1693
1694 if (new_size > i_size_read(inode)) {
1695 if (mode & FALLOC_FL_KEEP_SIZE)
1696 file_set_keep_isize(inode);
1697 else
1698 f2fs_i_size_write(inode, new_size);
1699 }
1700
1701 return err;
1702}
1703
1704static long f2fs_fallocate(struct file *file, int mode,
1705 loff_t offset, loff_t len)
1706{
1707 struct inode *inode = file_inode(file);
1708 long ret = 0;
1709
1710 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
1711 return -EIO;
1712 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode)))
1713 return -ENOSPC;
1714 if (!f2fs_is_compress_backend_ready(inode))
1715 return -EOPNOTSUPP;
1716
1717 /* f2fs only support ->fallocate for regular file */
1718 if (!S_ISREG(inode->i_mode))
1719 return -EINVAL;
1720
1721 if (IS_ENCRYPTED(inode) &&
1722 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
1723 return -EOPNOTSUPP;
1724
1725 if (f2fs_compressed_file(inode) &&
1726 (mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE |
1727 FALLOC_FL_ZERO_RANGE | FALLOC_FL_INSERT_RANGE)))
1728 return -EOPNOTSUPP;
1729
1730 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
1731 FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1732 FALLOC_FL_INSERT_RANGE))
1733 return -EOPNOTSUPP;
1734
1735 inode_lock(inode);
1736
1737 if (mode & FALLOC_FL_PUNCH_HOLE) {
1738 if (offset >= inode->i_size)
1739 goto out;
1740
1741 ret = punch_hole(inode, offset, len);
1742 } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1743 ret = f2fs_collapse_range(inode, offset, len);
1744 } else if (mode & FALLOC_FL_ZERO_RANGE) {
1745 ret = f2fs_zero_range(inode, offset, len, mode);
1746 } else if (mode & FALLOC_FL_INSERT_RANGE) {
1747 ret = f2fs_insert_range(inode, offset, len);
1748 } else {
1749 ret = expand_inode_data(inode, offset, len, mode);
1750 }
1751
1752 if (!ret) {
1753 inode->i_mtime = inode->i_ctime = current_time(inode);
1754 f2fs_mark_inode_dirty_sync(inode, false);
1755 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1756 }
1757
1758out:
1759 inode_unlock(inode);
1760
1761 trace_f2fs_fallocate(inode, mode, offset, len, ret);
1762 return ret;
1763}
1764
1765static int f2fs_release_file(struct inode *inode, struct file *filp)
1766{
1767 /*
1768 * f2fs_relase_file is called at every close calls. So we should
1769 * not drop any inmemory pages by close called by other process.
1770 */
1771 if (!(filp->f_mode & FMODE_WRITE) ||
1772 atomic_read(&inode->i_writecount) != 1)
1773 return 0;
1774
1775 /* some remained atomic pages should discarded */
1776 if (f2fs_is_atomic_file(inode))
1777 f2fs_drop_inmem_pages(inode);
1778 if (f2fs_is_volatile_file(inode)) {
1779 set_inode_flag(inode, FI_DROP_CACHE);
1780 filemap_fdatawrite(inode->i_mapping);
1781 clear_inode_flag(inode, FI_DROP_CACHE);
1782 clear_inode_flag(inode, FI_VOLATILE_FILE);
1783 stat_dec_volatile_write(inode);
1784 }
1785 return 0;
1786}
1787
1788static int f2fs_file_flush(struct file *file, fl_owner_t id)
1789{
1790 struct inode *inode = file_inode(file);
1791
1792 /*
1793 * If the process doing a transaction is crashed, we should do
1794 * roll-back. Otherwise, other reader/write can see corrupted database
1795 * until all the writers close its file. Since this should be done
1796 * before dropping file lock, it needs to do in ->flush.
1797 */
1798 if (f2fs_is_atomic_file(inode) &&
1799 F2FS_I(inode)->inmem_task == current)
1800 f2fs_drop_inmem_pages(inode);
1801 return 0;
1802}
1803
1804static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask)
1805{
1806 struct f2fs_inode_info *fi = F2FS_I(inode);
1807 u32 masked_flags = fi->i_flags & mask;
1808
1809 f2fs_bug_on(F2FS_I_SB(inode), (iflags & ~mask));
1810
1811 /* Is it quota file? Do not allow user to mess with it */
1812 if (IS_NOQUOTA(inode))
1813 return -EPERM;
1814
1815 if ((iflags ^ masked_flags) & F2FS_CASEFOLD_FL) {
1816 if (!f2fs_sb_has_casefold(F2FS_I_SB(inode)))
1817 return -EOPNOTSUPP;
1818 if (!f2fs_empty_dir(inode))
1819 return -ENOTEMPTY;
1820 }
1821
1822 if (iflags & (F2FS_COMPR_FL | F2FS_NOCOMP_FL)) {
1823 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
1824 return -EOPNOTSUPP;
1825 if ((iflags & F2FS_COMPR_FL) && (iflags & F2FS_NOCOMP_FL))
1826 return -EINVAL;
1827 }
1828
1829 if ((iflags ^ masked_flags) & F2FS_COMPR_FL) {
1830 if (masked_flags & F2FS_COMPR_FL) {
1831 if (f2fs_disable_compressed_file(inode))
1832 return -EINVAL;
1833 }
1834 if (iflags & F2FS_NOCOMP_FL)
1835 return -EINVAL;
1836 if (iflags & F2FS_COMPR_FL) {
1837 if (!f2fs_may_compress(inode))
1838 return -EINVAL;
1839
1840 set_compress_context(inode);
1841 }
1842 }
1843 if ((iflags ^ masked_flags) & F2FS_NOCOMP_FL) {
1844 if (masked_flags & F2FS_COMPR_FL)
1845 return -EINVAL;
1846 }
1847
1848 fi->i_flags = iflags | (fi->i_flags & ~mask);
1849 f2fs_bug_on(F2FS_I_SB(inode), (fi->i_flags & F2FS_COMPR_FL) &&
1850 (fi->i_flags & F2FS_NOCOMP_FL));
1851
1852 if (fi->i_flags & F2FS_PROJINHERIT_FL)
1853 set_inode_flag(inode, FI_PROJ_INHERIT);
1854 else
1855 clear_inode_flag(inode, FI_PROJ_INHERIT);
1856
1857 inode->i_ctime = current_time(inode);
1858 f2fs_set_inode_flags(inode);
1859 f2fs_mark_inode_dirty_sync(inode, true);
1860 return 0;
1861}
1862
1863/* FS_IOC_GETFLAGS and FS_IOC_SETFLAGS support */
1864
1865/*
1866 * To make a new on-disk f2fs i_flag gettable via FS_IOC_GETFLAGS, add an entry
1867 * for it to f2fs_fsflags_map[], and add its FS_*_FL equivalent to
1868 * F2FS_GETTABLE_FS_FL. To also make it settable via FS_IOC_SETFLAGS, also add
1869 * its FS_*_FL equivalent to F2FS_SETTABLE_FS_FL.
1870 */
1871
1872static const struct {
1873 u32 iflag;
1874 u32 fsflag;
1875} f2fs_fsflags_map[] = {
1876 { F2FS_COMPR_FL, FS_COMPR_FL },
1877 { F2FS_SYNC_FL, FS_SYNC_FL },
1878 { F2FS_IMMUTABLE_FL, FS_IMMUTABLE_FL },
1879 { F2FS_APPEND_FL, FS_APPEND_FL },
1880 { F2FS_NODUMP_FL, FS_NODUMP_FL },
1881 { F2FS_NOATIME_FL, FS_NOATIME_FL },
1882 { F2FS_NOCOMP_FL, FS_NOCOMP_FL },
1883 { F2FS_INDEX_FL, FS_INDEX_FL },
1884 { F2FS_DIRSYNC_FL, FS_DIRSYNC_FL },
1885 { F2FS_PROJINHERIT_FL, FS_PROJINHERIT_FL },
1886 { F2FS_CASEFOLD_FL, FS_CASEFOLD_FL },
1887};
1888
1889#define F2FS_GETTABLE_FS_FL ( \
1890 FS_COMPR_FL | \
1891 FS_SYNC_FL | \
1892 FS_IMMUTABLE_FL | \
1893 FS_APPEND_FL | \
1894 FS_NODUMP_FL | \
1895 FS_NOATIME_FL | \
1896 FS_NOCOMP_FL | \
1897 FS_INDEX_FL | \
1898 FS_DIRSYNC_FL | \
1899 FS_PROJINHERIT_FL | \
1900 FS_ENCRYPT_FL | \
1901 FS_INLINE_DATA_FL | \
1902 FS_NOCOW_FL | \
1903 FS_VERITY_FL | \
1904 FS_CASEFOLD_FL)
1905
1906#define F2FS_SETTABLE_FS_FL ( \
1907 FS_COMPR_FL | \
1908 FS_SYNC_FL | \
1909 FS_IMMUTABLE_FL | \
1910 FS_APPEND_FL | \
1911 FS_NODUMP_FL | \
1912 FS_NOATIME_FL | \
1913 FS_NOCOMP_FL | \
1914 FS_DIRSYNC_FL | \
1915 FS_PROJINHERIT_FL | \
1916 FS_CASEFOLD_FL)
1917
1918/* Convert f2fs on-disk i_flags to FS_IOC_{GET,SET}FLAGS flags */
1919static inline u32 f2fs_iflags_to_fsflags(u32 iflags)
1920{
1921 u32 fsflags = 0;
1922 int i;
1923
1924 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1925 if (iflags & f2fs_fsflags_map[i].iflag)
1926 fsflags |= f2fs_fsflags_map[i].fsflag;
1927
1928 return fsflags;
1929}
1930
1931/* Convert FS_IOC_{GET,SET}FLAGS flags to f2fs on-disk i_flags */
1932static inline u32 f2fs_fsflags_to_iflags(u32 fsflags)
1933{
1934 u32 iflags = 0;
1935 int i;
1936
1937 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1938 if (fsflags & f2fs_fsflags_map[i].fsflag)
1939 iflags |= f2fs_fsflags_map[i].iflag;
1940
1941 return iflags;
1942}
1943
1944static int f2fs_ioc_getflags(struct file *filp, unsigned long arg)
1945{
1946 struct inode *inode = file_inode(filp);
1947 struct f2fs_inode_info *fi = F2FS_I(inode);
1948 u32 fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
1949
1950 if (IS_ENCRYPTED(inode))
1951 fsflags |= FS_ENCRYPT_FL;
1952 if (IS_VERITY(inode))
1953 fsflags |= FS_VERITY_FL;
1954 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))
1955 fsflags |= FS_INLINE_DATA_FL;
1956 if (is_inode_flag_set(inode, FI_PIN_FILE))
1957 fsflags |= FS_NOCOW_FL;
1958
1959 fsflags &= F2FS_GETTABLE_FS_FL;
1960
1961 return put_user(fsflags, (int __user *)arg);
1962}
1963
1964static int f2fs_ioc_setflags(struct file *filp, unsigned long arg)
1965{
1966 struct inode *inode = file_inode(filp);
1967 struct f2fs_inode_info *fi = F2FS_I(inode);
1968 u32 fsflags, old_fsflags;
1969 u32 iflags;
1970 int ret;
1971
1972 if (!inode_owner_or_capable(inode))
1973 return -EACCES;
1974
1975 if (get_user(fsflags, (int __user *)arg))
1976 return -EFAULT;
1977
1978 if (fsflags & ~F2FS_GETTABLE_FS_FL)
1979 return -EOPNOTSUPP;
1980 fsflags &= F2FS_SETTABLE_FS_FL;
1981
1982 iflags = f2fs_fsflags_to_iflags(fsflags);
1983 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
1984 return -EOPNOTSUPP;
1985
1986 ret = mnt_want_write_file(filp);
1987 if (ret)
1988 return ret;
1989
1990 inode_lock(inode);
1991
1992 old_fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
1993 ret = vfs_ioc_setflags_prepare(inode, old_fsflags, fsflags);
1994 if (ret)
1995 goto out;
1996
1997 ret = f2fs_setflags_common(inode, iflags,
1998 f2fs_fsflags_to_iflags(F2FS_SETTABLE_FS_FL));
1999out:
2000 inode_unlock(inode);
2001 mnt_drop_write_file(filp);
2002 return ret;
2003}
2004
2005static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
2006{
2007 struct inode *inode = file_inode(filp);
2008
2009 return put_user(inode->i_generation, (int __user *)arg);
2010}
2011
2012static int f2fs_ioc_start_atomic_write(struct file *filp)
2013{
2014 struct inode *inode = file_inode(filp);
2015 struct f2fs_inode_info *fi = F2FS_I(inode);
2016 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2017 int ret;
2018
2019 if (!inode_owner_or_capable(inode))
2020 return -EACCES;
2021
2022 if (!S_ISREG(inode->i_mode))
2023 return -EINVAL;
2024
2025 if (filp->f_flags & O_DIRECT)
2026 return -EINVAL;
2027
2028 ret = mnt_want_write_file(filp);
2029 if (ret)
2030 return ret;
2031
2032 inode_lock(inode);
2033
2034 f2fs_disable_compressed_file(inode);
2035
2036 if (f2fs_is_atomic_file(inode)) {
2037 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST))
2038 ret = -EINVAL;
2039 goto out;
2040 }
2041
2042 ret = f2fs_convert_inline_inode(inode);
2043 if (ret)
2044 goto out;
2045
2046 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
2047
2048 /*
2049 * Should wait end_io to count F2FS_WB_CP_DATA correctly by
2050 * f2fs_is_atomic_file.
2051 */
2052 if (get_dirty_pages(inode))
2053 f2fs_warn(F2FS_I_SB(inode), "Unexpected flush for atomic writes: ino=%lu, npages=%u",
2054 inode->i_ino, get_dirty_pages(inode));
2055 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
2056 if (ret) {
2057 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
2058 goto out;
2059 }
2060
2061 spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
2062 if (list_empty(&fi->inmem_ilist))
2063 list_add_tail(&fi->inmem_ilist, &sbi->inode_list[ATOMIC_FILE]);
2064 sbi->atomic_files++;
2065 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
2066
2067 /* add inode in inmem_list first and set atomic_file */
2068 set_inode_flag(inode, FI_ATOMIC_FILE);
2069 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2070 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
2071
2072 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2073 F2FS_I(inode)->inmem_task = current;
2074 stat_update_max_atomic_write(inode);
2075out:
2076 inode_unlock(inode);
2077 mnt_drop_write_file(filp);
2078 return ret;
2079}
2080
2081static int f2fs_ioc_commit_atomic_write(struct file *filp)
2082{
2083 struct inode *inode = file_inode(filp);
2084 int ret;
2085
2086 if (!inode_owner_or_capable(inode))
2087 return -EACCES;
2088
2089 ret = mnt_want_write_file(filp);
2090 if (ret)
2091 return ret;
2092
2093 f2fs_balance_fs(F2FS_I_SB(inode), true);
2094
2095 inode_lock(inode);
2096
2097 if (f2fs_is_volatile_file(inode)) {
2098 ret = -EINVAL;
2099 goto err_out;
2100 }
2101
2102 if (f2fs_is_atomic_file(inode)) {
2103 ret = f2fs_commit_inmem_pages(inode);
2104 if (ret)
2105 goto err_out;
2106
2107 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
2108 if (!ret)
2109 f2fs_drop_inmem_pages(inode);
2110 } else {
2111 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false);
2112 }
2113err_out:
2114 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) {
2115 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2116 ret = -EINVAL;
2117 }
2118 inode_unlock(inode);
2119 mnt_drop_write_file(filp);
2120 return ret;
2121}
2122
2123static int f2fs_ioc_start_volatile_write(struct file *filp)
2124{
2125 struct inode *inode = file_inode(filp);
2126 int ret;
2127
2128 if (!inode_owner_or_capable(inode))
2129 return -EACCES;
2130
2131 if (!S_ISREG(inode->i_mode))
2132 return -EINVAL;
2133
2134 ret = mnt_want_write_file(filp);
2135 if (ret)
2136 return ret;
2137
2138 inode_lock(inode);
2139
2140 if (f2fs_is_volatile_file(inode))
2141 goto out;
2142
2143 ret = f2fs_convert_inline_inode(inode);
2144 if (ret)
2145 goto out;
2146
2147 stat_inc_volatile_write(inode);
2148 stat_update_max_volatile_write(inode);
2149
2150 set_inode_flag(inode, FI_VOLATILE_FILE);
2151 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2152out:
2153 inode_unlock(inode);
2154 mnt_drop_write_file(filp);
2155 return ret;
2156}
2157
2158static int f2fs_ioc_release_volatile_write(struct file *filp)
2159{
2160 struct inode *inode = file_inode(filp);
2161 int ret;
2162
2163 if (!inode_owner_or_capable(inode))
2164 return -EACCES;
2165
2166 ret = mnt_want_write_file(filp);
2167 if (ret)
2168 return ret;
2169
2170 inode_lock(inode);
2171
2172 if (!f2fs_is_volatile_file(inode))
2173 goto out;
2174
2175 if (!f2fs_is_first_block_written(inode)) {
2176 ret = truncate_partial_data_page(inode, 0, true);
2177 goto out;
2178 }
2179
2180 ret = punch_hole(inode, 0, F2FS_BLKSIZE);
2181out:
2182 inode_unlock(inode);
2183 mnt_drop_write_file(filp);
2184 return ret;
2185}
2186
2187static int f2fs_ioc_abort_volatile_write(struct file *filp)
2188{
2189 struct inode *inode = file_inode(filp);
2190 int ret;
2191
2192 if (!inode_owner_or_capable(inode))
2193 return -EACCES;
2194
2195 ret = mnt_want_write_file(filp);
2196 if (ret)
2197 return ret;
2198
2199 inode_lock(inode);
2200
2201 if (f2fs_is_atomic_file(inode))
2202 f2fs_drop_inmem_pages(inode);
2203 if (f2fs_is_volatile_file(inode)) {
2204 clear_inode_flag(inode, FI_VOLATILE_FILE);
2205 stat_dec_volatile_write(inode);
2206 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
2207 }
2208
2209 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2210
2211 inode_unlock(inode);
2212
2213 mnt_drop_write_file(filp);
2214 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2215 return ret;
2216}
2217
2218static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
2219{
2220 struct inode *inode = file_inode(filp);
2221 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2222 struct super_block *sb = sbi->sb;
2223 __u32 in;
2224 int ret = 0;
2225
2226 if (!capable(CAP_SYS_ADMIN))
2227 return -EPERM;
2228
2229 if (get_user(in, (__u32 __user *)arg))
2230 return -EFAULT;
2231
2232 if (in != F2FS_GOING_DOWN_FULLSYNC) {
2233 ret = mnt_want_write_file(filp);
2234 if (ret) {
2235 if (ret == -EROFS) {
2236 ret = 0;
2237 f2fs_stop_checkpoint(sbi, false);
2238 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2239 trace_f2fs_shutdown(sbi, in, ret);
2240 }
2241 return ret;
2242 }
2243 }
2244
2245 switch (in) {
2246 case F2FS_GOING_DOWN_FULLSYNC:
2247 sb = freeze_bdev(sb->s_bdev);
2248 if (IS_ERR(sb)) {
2249 ret = PTR_ERR(sb);
2250 goto out;
2251 }
2252 if (sb) {
2253 f2fs_stop_checkpoint(sbi, false);
2254 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2255 thaw_bdev(sb->s_bdev, sb);
2256 }
2257 break;
2258 case F2FS_GOING_DOWN_METASYNC:
2259 /* do checkpoint only */
2260 ret = f2fs_sync_fs(sb, 1);
2261 if (ret)
2262 goto out;
2263 f2fs_stop_checkpoint(sbi, false);
2264 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2265 break;
2266 case F2FS_GOING_DOWN_NOSYNC:
2267 f2fs_stop_checkpoint(sbi, false);
2268 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2269 break;
2270 case F2FS_GOING_DOWN_METAFLUSH:
2271 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
2272 f2fs_stop_checkpoint(sbi, false);
2273 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2274 break;
2275 case F2FS_GOING_DOWN_NEED_FSCK:
2276 set_sbi_flag(sbi, SBI_NEED_FSCK);
2277 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
2278 set_sbi_flag(sbi, SBI_IS_DIRTY);
2279 /* do checkpoint only */
2280 ret = f2fs_sync_fs(sb, 1);
2281 goto out;
2282 default:
2283 ret = -EINVAL;
2284 goto out;
2285 }
2286
2287 f2fs_stop_gc_thread(sbi);
2288 f2fs_stop_discard_thread(sbi);
2289
2290 f2fs_drop_discard_cmd(sbi);
2291 clear_opt(sbi, DISCARD);
2292
2293 f2fs_update_time(sbi, REQ_TIME);
2294out:
2295 if (in != F2FS_GOING_DOWN_FULLSYNC)
2296 mnt_drop_write_file(filp);
2297
2298 trace_f2fs_shutdown(sbi, in, ret);
2299
2300 return ret;
2301}
2302
2303static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
2304{
2305 struct inode *inode = file_inode(filp);
2306 struct super_block *sb = inode->i_sb;
2307 struct request_queue *q = bdev_get_queue(sb->s_bdev);
2308 struct fstrim_range range;
2309 int ret;
2310
2311 if (!capable(CAP_SYS_ADMIN))
2312 return -EPERM;
2313
2314 if (!f2fs_hw_support_discard(F2FS_SB(sb)))
2315 return -EOPNOTSUPP;
2316
2317 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
2318 sizeof(range)))
2319 return -EFAULT;
2320
2321 ret = mnt_want_write_file(filp);
2322 if (ret)
2323 return ret;
2324
2325 range.minlen = max((unsigned int)range.minlen,
2326 q->limits.discard_granularity);
2327 ret = f2fs_trim_fs(F2FS_SB(sb), &range);
2328 mnt_drop_write_file(filp);
2329 if (ret < 0)
2330 return ret;
2331
2332 if (copy_to_user((struct fstrim_range __user *)arg, &range,
2333 sizeof(range)))
2334 return -EFAULT;
2335 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2336 return 0;
2337}
2338
2339static bool uuid_is_nonzero(__u8 u[16])
2340{
2341 int i;
2342
2343 for (i = 0; i < 16; i++)
2344 if (u[i])
2345 return true;
2346 return false;
2347}
2348
2349static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
2350{
2351 struct inode *inode = file_inode(filp);
2352
2353 if (!f2fs_sb_has_encrypt(F2FS_I_SB(inode)))
2354 return -EOPNOTSUPP;
2355
2356 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2357
2358 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
2359}
2360
2361static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
2362{
2363 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2364 return -EOPNOTSUPP;
2365 return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
2366}
2367
2368static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
2369{
2370 struct inode *inode = file_inode(filp);
2371 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2372 int err;
2373
2374 if (!f2fs_sb_has_encrypt(sbi))
2375 return -EOPNOTSUPP;
2376
2377 err = mnt_want_write_file(filp);
2378 if (err)
2379 return err;
2380
2381 down_write(&sbi->sb_lock);
2382
2383 if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
2384 goto got_it;
2385
2386 /* update superblock with uuid */
2387 generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
2388
2389 err = f2fs_commit_super(sbi, false);
2390 if (err) {
2391 /* undo new data */
2392 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
2393 goto out_err;
2394 }
2395got_it:
2396 if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt,
2397 16))
2398 err = -EFAULT;
2399out_err:
2400 up_write(&sbi->sb_lock);
2401 mnt_drop_write_file(filp);
2402 return err;
2403}
2404
2405static int f2fs_ioc_get_encryption_policy_ex(struct file *filp,
2406 unsigned long arg)
2407{
2408 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2409 return -EOPNOTSUPP;
2410
2411 return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg);
2412}
2413
2414static int f2fs_ioc_add_encryption_key(struct file *filp, unsigned long arg)
2415{
2416 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2417 return -EOPNOTSUPP;
2418
2419 return fscrypt_ioctl_add_key(filp, (void __user *)arg);
2420}
2421
2422static int f2fs_ioc_remove_encryption_key(struct file *filp, unsigned long arg)
2423{
2424 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2425 return -EOPNOTSUPP;
2426
2427 return fscrypt_ioctl_remove_key(filp, (void __user *)arg);
2428}
2429
2430static int f2fs_ioc_remove_encryption_key_all_users(struct file *filp,
2431 unsigned long arg)
2432{
2433 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2434 return -EOPNOTSUPP;
2435
2436 return fscrypt_ioctl_remove_key_all_users(filp, (void __user *)arg);
2437}
2438
2439static int f2fs_ioc_get_encryption_key_status(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_key_status(filp, (void __user *)arg);
2446}
2447
2448static int f2fs_ioc_get_encryption_nonce(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_get_nonce(filp, (void __user *)arg);
2454}
2455
2456static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
2457{
2458 struct inode *inode = file_inode(filp);
2459 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2460 __u32 sync;
2461 int ret;
2462
2463 if (!capable(CAP_SYS_ADMIN))
2464 return -EPERM;
2465
2466 if (get_user(sync, (__u32 __user *)arg))
2467 return -EFAULT;
2468
2469 if (f2fs_readonly(sbi->sb))
2470 return -EROFS;
2471
2472 ret = mnt_want_write_file(filp);
2473 if (ret)
2474 return ret;
2475
2476 if (!sync) {
2477 if (!down_write_trylock(&sbi->gc_lock)) {
2478 ret = -EBUSY;
2479 goto out;
2480 }
2481 } else {
2482 down_write(&sbi->gc_lock);
2483 }
2484
2485 ret = f2fs_gc(sbi, sync, true, NULL_SEGNO);
2486out:
2487 mnt_drop_write_file(filp);
2488 return ret;
2489}
2490
2491static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
2492{
2493 struct inode *inode = file_inode(filp);
2494 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2495 struct f2fs_gc_range range;
2496 u64 end;
2497 int ret;
2498
2499 if (!capable(CAP_SYS_ADMIN))
2500 return -EPERM;
2501
2502 if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
2503 sizeof(range)))
2504 return -EFAULT;
2505
2506 if (f2fs_readonly(sbi->sb))
2507 return -EROFS;
2508
2509 end = range.start + range.len;
2510 if (end < range.start || range.start < MAIN_BLKADDR(sbi) ||
2511 end >= MAX_BLKADDR(sbi))
2512 return -EINVAL;
2513
2514 ret = mnt_want_write_file(filp);
2515 if (ret)
2516 return ret;
2517
2518do_more:
2519 if (!range.sync) {
2520 if (!down_write_trylock(&sbi->gc_lock)) {
2521 ret = -EBUSY;
2522 goto out;
2523 }
2524 } else {
2525 down_write(&sbi->gc_lock);
2526 }
2527
2528 ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start));
2529 if (ret) {
2530 if (ret == -EBUSY)
2531 ret = -EAGAIN;
2532 goto out;
2533 }
2534 range.start += BLKS_PER_SEC(sbi);
2535 if (range.start <= end)
2536 goto do_more;
2537out:
2538 mnt_drop_write_file(filp);
2539 return ret;
2540}
2541
2542static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
2543{
2544 struct inode *inode = file_inode(filp);
2545 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2546 int ret;
2547
2548 if (!capable(CAP_SYS_ADMIN))
2549 return -EPERM;
2550
2551 if (f2fs_readonly(sbi->sb))
2552 return -EROFS;
2553
2554 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
2555 f2fs_info(sbi, "Skipping Checkpoint. Checkpoints currently disabled.");
2556 return -EINVAL;
2557 }
2558
2559 ret = mnt_want_write_file(filp);
2560 if (ret)
2561 return ret;
2562
2563 ret = f2fs_sync_fs(sbi->sb, 1);
2564
2565 mnt_drop_write_file(filp);
2566 return ret;
2567}
2568
2569static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
2570 struct file *filp,
2571 struct f2fs_defragment *range)
2572{
2573 struct inode *inode = file_inode(filp);
2574 struct f2fs_map_blocks map = { .m_next_extent = NULL,
2575 .m_seg_type = NO_CHECK_TYPE ,
2576 .m_may_create = false };
2577 struct extent_info ei = {0, 0, 0};
2578 pgoff_t pg_start, pg_end, next_pgofs;
2579 unsigned int blk_per_seg = sbi->blocks_per_seg;
2580 unsigned int total = 0, sec_num;
2581 block_t blk_end = 0;
2582 bool fragmented = false;
2583 int err;
2584
2585 /* if in-place-update policy is enabled, don't waste time here */
2586 if (f2fs_should_update_inplace(inode, NULL))
2587 return -EINVAL;
2588
2589 pg_start = range->start >> PAGE_SHIFT;
2590 pg_end = (range->start + range->len) >> PAGE_SHIFT;
2591
2592 f2fs_balance_fs(sbi, true);
2593
2594 inode_lock(inode);
2595
2596 /* writeback all dirty pages in the range */
2597 err = filemap_write_and_wait_range(inode->i_mapping, range->start,
2598 range->start + range->len - 1);
2599 if (err)
2600 goto out;
2601
2602 /*
2603 * lookup mapping info in extent cache, skip defragmenting if physical
2604 * block addresses are continuous.
2605 */
2606 if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) {
2607 if (ei.fofs + ei.len >= pg_end)
2608 goto out;
2609 }
2610
2611 map.m_lblk = pg_start;
2612 map.m_next_pgofs = &next_pgofs;
2613
2614 /*
2615 * lookup mapping info in dnode page cache, skip defragmenting if all
2616 * physical block addresses are continuous even if there are hole(s)
2617 * in logical blocks.
2618 */
2619 while (map.m_lblk < pg_end) {
2620 map.m_len = pg_end - map.m_lblk;
2621 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
2622 if (err)
2623 goto out;
2624
2625 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
2626 map.m_lblk = next_pgofs;
2627 continue;
2628 }
2629
2630 if (blk_end && blk_end != map.m_pblk)
2631 fragmented = true;
2632
2633 /* record total count of block that we're going to move */
2634 total += map.m_len;
2635
2636 blk_end = map.m_pblk + map.m_len;
2637
2638 map.m_lblk += map.m_len;
2639 }
2640
2641 if (!fragmented) {
2642 total = 0;
2643 goto out;
2644 }
2645
2646 sec_num = DIV_ROUND_UP(total, BLKS_PER_SEC(sbi));
2647
2648 /*
2649 * make sure there are enough free section for LFS allocation, this can
2650 * avoid defragment running in SSR mode when free section are allocated
2651 * intensively
2652 */
2653 if (has_not_enough_free_secs(sbi, 0, sec_num)) {
2654 err = -EAGAIN;
2655 goto out;
2656 }
2657
2658 map.m_lblk = pg_start;
2659 map.m_len = pg_end - pg_start;
2660 total = 0;
2661
2662 while (map.m_lblk < pg_end) {
2663 pgoff_t idx;
2664 int cnt = 0;
2665
2666do_map:
2667 map.m_len = pg_end - map.m_lblk;
2668 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
2669 if (err)
2670 goto clear_out;
2671
2672 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
2673 map.m_lblk = next_pgofs;
2674 goto check;
2675 }
2676
2677 set_inode_flag(inode, FI_DO_DEFRAG);
2678
2679 idx = map.m_lblk;
2680 while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) {
2681 struct page *page;
2682
2683 page = f2fs_get_lock_data_page(inode, idx, true);
2684 if (IS_ERR(page)) {
2685 err = PTR_ERR(page);
2686 goto clear_out;
2687 }
2688
2689 set_page_dirty(page);
2690 f2fs_put_page(page, 1);
2691
2692 idx++;
2693 cnt++;
2694 total++;
2695 }
2696
2697 map.m_lblk = idx;
2698check:
2699 if (map.m_lblk < pg_end && cnt < blk_per_seg)
2700 goto do_map;
2701
2702 clear_inode_flag(inode, FI_DO_DEFRAG);
2703
2704 err = filemap_fdatawrite(inode->i_mapping);
2705 if (err)
2706 goto out;
2707 }
2708clear_out:
2709 clear_inode_flag(inode, FI_DO_DEFRAG);
2710out:
2711 inode_unlock(inode);
2712 if (!err)
2713 range->len = (u64)total << PAGE_SHIFT;
2714 return err;
2715}
2716
2717static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
2718{
2719 struct inode *inode = file_inode(filp);
2720 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2721 struct f2fs_defragment range;
2722 int err;
2723
2724 if (!capable(CAP_SYS_ADMIN))
2725 return -EPERM;
2726
2727 if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode))
2728 return -EINVAL;
2729
2730 if (f2fs_readonly(sbi->sb))
2731 return -EROFS;
2732
2733 if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
2734 sizeof(range)))
2735 return -EFAULT;
2736
2737 /* verify alignment of offset & size */
2738 if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1))
2739 return -EINVAL;
2740
2741 if (unlikely((range.start + range.len) >> PAGE_SHIFT >
2742 sbi->max_file_blocks))
2743 return -EINVAL;
2744
2745 err = mnt_want_write_file(filp);
2746 if (err)
2747 return err;
2748
2749 err = f2fs_defragment_range(sbi, filp, &range);
2750 mnt_drop_write_file(filp);
2751
2752 f2fs_update_time(sbi, REQ_TIME);
2753 if (err < 0)
2754 return err;
2755
2756 if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
2757 sizeof(range)))
2758 return -EFAULT;
2759
2760 return 0;
2761}
2762
2763static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
2764 struct file *file_out, loff_t pos_out, size_t len)
2765{
2766 struct inode *src = file_inode(file_in);
2767 struct inode *dst = file_inode(file_out);
2768 struct f2fs_sb_info *sbi = F2FS_I_SB(src);
2769 size_t olen = len, dst_max_i_size = 0;
2770 size_t dst_osize;
2771 int ret;
2772
2773 if (file_in->f_path.mnt != file_out->f_path.mnt ||
2774 src->i_sb != dst->i_sb)
2775 return -EXDEV;
2776
2777 if (unlikely(f2fs_readonly(src->i_sb)))
2778 return -EROFS;
2779
2780 if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
2781 return -EINVAL;
2782
2783 if (IS_ENCRYPTED(src) || IS_ENCRYPTED(dst))
2784 return -EOPNOTSUPP;
2785
2786 if (src == dst) {
2787 if (pos_in == pos_out)
2788 return 0;
2789 if (pos_out > pos_in && pos_out < pos_in + len)
2790 return -EINVAL;
2791 }
2792
2793 inode_lock(src);
2794 if (src != dst) {
2795 ret = -EBUSY;
2796 if (!inode_trylock(dst))
2797 goto out;
2798 }
2799
2800 ret = -EINVAL;
2801 if (pos_in + len > src->i_size || pos_in + len < pos_in)
2802 goto out_unlock;
2803 if (len == 0)
2804 olen = len = src->i_size - pos_in;
2805 if (pos_in + len == src->i_size)
2806 len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in;
2807 if (len == 0) {
2808 ret = 0;
2809 goto out_unlock;
2810 }
2811
2812 dst_osize = dst->i_size;
2813 if (pos_out + olen > dst->i_size)
2814 dst_max_i_size = pos_out + olen;
2815
2816 /* verify the end result is block aligned */
2817 if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) ||
2818 !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) ||
2819 !IS_ALIGNED(pos_out, F2FS_BLKSIZE))
2820 goto out_unlock;
2821
2822 ret = f2fs_convert_inline_inode(src);
2823 if (ret)
2824 goto out_unlock;
2825
2826 ret = f2fs_convert_inline_inode(dst);
2827 if (ret)
2828 goto out_unlock;
2829
2830 /* write out all dirty pages from offset */
2831 ret = filemap_write_and_wait_range(src->i_mapping,
2832 pos_in, pos_in + len);
2833 if (ret)
2834 goto out_unlock;
2835
2836 ret = filemap_write_and_wait_range(dst->i_mapping,
2837 pos_out, pos_out + len);
2838 if (ret)
2839 goto out_unlock;
2840
2841 f2fs_balance_fs(sbi, true);
2842
2843 down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2844 if (src != dst) {
2845 ret = -EBUSY;
2846 if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE]))
2847 goto out_src;
2848 }
2849
2850 f2fs_lock_op(sbi);
2851 ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
2852 pos_out >> F2FS_BLKSIZE_BITS,
2853 len >> F2FS_BLKSIZE_BITS, false);
2854
2855 if (!ret) {
2856 if (dst_max_i_size)
2857 f2fs_i_size_write(dst, dst_max_i_size);
2858 else if (dst_osize != dst->i_size)
2859 f2fs_i_size_write(dst, dst_osize);
2860 }
2861 f2fs_unlock_op(sbi);
2862
2863 if (src != dst)
2864 up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]);
2865out_src:
2866 up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2867out_unlock:
2868 if (src != dst)
2869 inode_unlock(dst);
2870out:
2871 inode_unlock(src);
2872 return ret;
2873}
2874
2875static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
2876{
2877 struct f2fs_move_range range;
2878 struct fd dst;
2879 int err;
2880
2881 if (!(filp->f_mode & FMODE_READ) ||
2882 !(filp->f_mode & FMODE_WRITE))
2883 return -EBADF;
2884
2885 if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
2886 sizeof(range)))
2887 return -EFAULT;
2888
2889 dst = fdget(range.dst_fd);
2890 if (!dst.file)
2891 return -EBADF;
2892
2893 if (!(dst.file->f_mode & FMODE_WRITE)) {
2894 err = -EBADF;
2895 goto err_out;
2896 }
2897
2898 err = mnt_want_write_file(filp);
2899 if (err)
2900 goto err_out;
2901
2902 err = f2fs_move_file_range(filp, range.pos_in, dst.file,
2903 range.pos_out, range.len);
2904
2905 mnt_drop_write_file(filp);
2906 if (err)
2907 goto err_out;
2908
2909 if (copy_to_user((struct f2fs_move_range __user *)arg,
2910 &range, sizeof(range)))
2911 err = -EFAULT;
2912err_out:
2913 fdput(dst);
2914 return err;
2915}
2916
2917static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
2918{
2919 struct inode *inode = file_inode(filp);
2920 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2921 struct sit_info *sm = SIT_I(sbi);
2922 unsigned int start_segno = 0, end_segno = 0;
2923 unsigned int dev_start_segno = 0, dev_end_segno = 0;
2924 struct f2fs_flush_device range;
2925 int ret;
2926
2927 if (!capable(CAP_SYS_ADMIN))
2928 return -EPERM;
2929
2930 if (f2fs_readonly(sbi->sb))
2931 return -EROFS;
2932
2933 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2934 return -EINVAL;
2935
2936 if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg,
2937 sizeof(range)))
2938 return -EFAULT;
2939
2940 if (!f2fs_is_multi_device(sbi) || sbi->s_ndevs - 1 <= range.dev_num ||
2941 __is_large_section(sbi)) {
2942 f2fs_warn(sbi, "Can't flush %u in %d for segs_per_sec %u != 1",
2943 range.dev_num, sbi->s_ndevs, sbi->segs_per_sec);
2944 return -EINVAL;
2945 }
2946
2947 ret = mnt_want_write_file(filp);
2948 if (ret)
2949 return ret;
2950
2951 if (range.dev_num != 0)
2952 dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk);
2953 dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk);
2954
2955 start_segno = sm->last_victim[FLUSH_DEVICE];
2956 if (start_segno < dev_start_segno || start_segno >= dev_end_segno)
2957 start_segno = dev_start_segno;
2958 end_segno = min(start_segno + range.segments, dev_end_segno);
2959
2960 while (start_segno < end_segno) {
2961 if (!down_write_trylock(&sbi->gc_lock)) {
2962 ret = -EBUSY;
2963 goto out;
2964 }
2965 sm->last_victim[GC_CB] = end_segno + 1;
2966 sm->last_victim[GC_GREEDY] = end_segno + 1;
2967 sm->last_victim[ALLOC_NEXT] = end_segno + 1;
2968 ret = f2fs_gc(sbi, true, true, start_segno);
2969 if (ret == -EAGAIN)
2970 ret = 0;
2971 else if (ret < 0)
2972 break;
2973 start_segno++;
2974 }
2975out:
2976 mnt_drop_write_file(filp);
2977 return ret;
2978}
2979
2980static int f2fs_ioc_get_features(struct file *filp, unsigned long arg)
2981{
2982 struct inode *inode = file_inode(filp);
2983 u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature);
2984
2985 /* Must validate to set it with SQLite behavior in Android. */
2986 sb_feature |= F2FS_FEATURE_ATOMIC_WRITE;
2987
2988 return put_user(sb_feature, (u32 __user *)arg);
2989}
2990
2991#ifdef CONFIG_QUOTA
2992int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
2993{
2994 struct dquot *transfer_to[MAXQUOTAS] = {};
2995 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2996 struct super_block *sb = sbi->sb;
2997 int err = 0;
2998
2999 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
3000 if (!IS_ERR(transfer_to[PRJQUOTA])) {
3001 err = __dquot_transfer(inode, transfer_to);
3002 if (err)
3003 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
3004 dqput(transfer_to[PRJQUOTA]);
3005 }
3006 return err;
3007}
3008
3009static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
3010{
3011 struct inode *inode = file_inode(filp);
3012 struct f2fs_inode_info *fi = F2FS_I(inode);
3013 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3014 struct page *ipage;
3015 kprojid_t kprojid;
3016 int err;
3017
3018 if (!f2fs_sb_has_project_quota(sbi)) {
3019 if (projid != F2FS_DEF_PROJID)
3020 return -EOPNOTSUPP;
3021 else
3022 return 0;
3023 }
3024
3025 if (!f2fs_has_extra_attr(inode))
3026 return -EOPNOTSUPP;
3027
3028 kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
3029
3030 if (projid_eq(kprojid, F2FS_I(inode)->i_projid))
3031 return 0;
3032
3033 err = -EPERM;
3034 /* Is it quota file? Do not allow user to mess with it */
3035 if (IS_NOQUOTA(inode))
3036 return err;
3037
3038 ipage = f2fs_get_node_page(sbi, inode->i_ino);
3039 if (IS_ERR(ipage))
3040 return PTR_ERR(ipage);
3041
3042 if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize,
3043 i_projid)) {
3044 err = -EOVERFLOW;
3045 f2fs_put_page(ipage, 1);
3046 return err;
3047 }
3048 f2fs_put_page(ipage, 1);
3049
3050 err = dquot_initialize(inode);
3051 if (err)
3052 return err;
3053
3054 f2fs_lock_op(sbi);
3055 err = f2fs_transfer_project_quota(inode, kprojid);
3056 if (err)
3057 goto out_unlock;
3058
3059 F2FS_I(inode)->i_projid = kprojid;
3060 inode->i_ctime = current_time(inode);
3061 f2fs_mark_inode_dirty_sync(inode, true);
3062out_unlock:
3063 f2fs_unlock_op(sbi);
3064 return err;
3065}
3066#else
3067int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
3068{
3069 return 0;
3070}
3071
3072static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
3073{
3074 if (projid != F2FS_DEF_PROJID)
3075 return -EOPNOTSUPP;
3076 return 0;
3077}
3078#endif
3079
3080/* FS_IOC_FSGETXATTR and FS_IOC_FSSETXATTR support */
3081
3082/*
3083 * To make a new on-disk f2fs i_flag gettable via FS_IOC_FSGETXATTR and settable
3084 * via FS_IOC_FSSETXATTR, add an entry for it to f2fs_xflags_map[], and add its
3085 * FS_XFLAG_* equivalent to F2FS_SUPPORTED_XFLAGS.
3086 */
3087
3088static const struct {
3089 u32 iflag;
3090 u32 xflag;
3091} f2fs_xflags_map[] = {
3092 { F2FS_SYNC_FL, FS_XFLAG_SYNC },
3093 { F2FS_IMMUTABLE_FL, FS_XFLAG_IMMUTABLE },
3094 { F2FS_APPEND_FL, FS_XFLAG_APPEND },
3095 { F2FS_NODUMP_FL, FS_XFLAG_NODUMP },
3096 { F2FS_NOATIME_FL, FS_XFLAG_NOATIME },
3097 { F2FS_PROJINHERIT_FL, FS_XFLAG_PROJINHERIT },
3098};
3099
3100#define F2FS_SUPPORTED_XFLAGS ( \
3101 FS_XFLAG_SYNC | \
3102 FS_XFLAG_IMMUTABLE | \
3103 FS_XFLAG_APPEND | \
3104 FS_XFLAG_NODUMP | \
3105 FS_XFLAG_NOATIME | \
3106 FS_XFLAG_PROJINHERIT)
3107
3108/* Convert f2fs on-disk i_flags to FS_IOC_FS{GET,SET}XATTR flags */
3109static inline u32 f2fs_iflags_to_xflags(u32 iflags)
3110{
3111 u32 xflags = 0;
3112 int i;
3113
3114 for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++)
3115 if (iflags & f2fs_xflags_map[i].iflag)
3116 xflags |= f2fs_xflags_map[i].xflag;
3117
3118 return xflags;
3119}
3120
3121/* Convert FS_IOC_FS{GET,SET}XATTR flags to f2fs on-disk i_flags */
3122static inline u32 f2fs_xflags_to_iflags(u32 xflags)
3123{
3124 u32 iflags = 0;
3125 int i;
3126
3127 for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++)
3128 if (xflags & f2fs_xflags_map[i].xflag)
3129 iflags |= f2fs_xflags_map[i].iflag;
3130
3131 return iflags;
3132}
3133
3134static void f2fs_fill_fsxattr(struct inode *inode, struct fsxattr *fa)
3135{
3136 struct f2fs_inode_info *fi = F2FS_I(inode);
3137
3138 simple_fill_fsxattr(fa, f2fs_iflags_to_xflags(fi->i_flags));
3139
3140 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)))
3141 fa->fsx_projid = from_kprojid(&init_user_ns, fi->i_projid);
3142}
3143
3144static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg)
3145{
3146 struct inode *inode = file_inode(filp);
3147 struct fsxattr fa;
3148
3149 f2fs_fill_fsxattr(inode, &fa);
3150
3151 if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa)))
3152 return -EFAULT;
3153 return 0;
3154}
3155
3156static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg)
3157{
3158 struct inode *inode = file_inode(filp);
3159 struct fsxattr fa, old_fa;
3160 u32 iflags;
3161 int err;
3162
3163 if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa)))
3164 return -EFAULT;
3165
3166 /* Make sure caller has proper permission */
3167 if (!inode_owner_or_capable(inode))
3168 return -EACCES;
3169
3170 if (fa.fsx_xflags & ~F2FS_SUPPORTED_XFLAGS)
3171 return -EOPNOTSUPP;
3172
3173 iflags = f2fs_xflags_to_iflags(fa.fsx_xflags);
3174 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
3175 return -EOPNOTSUPP;
3176
3177 err = mnt_want_write_file(filp);
3178 if (err)
3179 return err;
3180
3181 inode_lock(inode);
3182
3183 f2fs_fill_fsxattr(inode, &old_fa);
3184 err = vfs_ioc_fssetxattr_check(inode, &old_fa, &fa);
3185 if (err)
3186 goto out;
3187
3188 err = f2fs_setflags_common(inode, iflags,
3189 f2fs_xflags_to_iflags(F2FS_SUPPORTED_XFLAGS));
3190 if (err)
3191 goto out;
3192
3193 err = f2fs_ioc_setproject(filp, fa.fsx_projid);
3194out:
3195 inode_unlock(inode);
3196 mnt_drop_write_file(filp);
3197 return err;
3198}
3199
3200int f2fs_pin_file_control(struct inode *inode, bool inc)
3201{
3202 struct f2fs_inode_info *fi = F2FS_I(inode);
3203 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3204
3205 /* Use i_gc_failures for normal file as a risk signal. */
3206 if (inc)
3207 f2fs_i_gc_failures_write(inode,
3208 fi->i_gc_failures[GC_FAILURE_PIN] + 1);
3209
3210 if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) {
3211 f2fs_warn(sbi, "%s: Enable GC = ino %lx after %x GC trials",
3212 __func__, inode->i_ino,
3213 fi->i_gc_failures[GC_FAILURE_PIN]);
3214 clear_inode_flag(inode, FI_PIN_FILE);
3215 return -EAGAIN;
3216 }
3217 return 0;
3218}
3219
3220static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
3221{
3222 struct inode *inode = file_inode(filp);
3223 __u32 pin;
3224 int ret = 0;
3225
3226 if (get_user(pin, (__u32 __user *)arg))
3227 return -EFAULT;
3228
3229 if (!S_ISREG(inode->i_mode))
3230 return -EINVAL;
3231
3232 if (f2fs_readonly(F2FS_I_SB(inode)->sb))
3233 return -EROFS;
3234
3235 ret = mnt_want_write_file(filp);
3236 if (ret)
3237 return ret;
3238
3239 inode_lock(inode);
3240
3241 if (f2fs_should_update_outplace(inode, NULL)) {
3242 ret = -EINVAL;
3243 goto out;
3244 }
3245
3246 if (!pin) {
3247 clear_inode_flag(inode, FI_PIN_FILE);
3248 f2fs_i_gc_failures_write(inode, 0);
3249 goto done;
3250 }
3251
3252 if (f2fs_pin_file_control(inode, false)) {
3253 ret = -EAGAIN;
3254 goto out;
3255 }
3256
3257 ret = f2fs_convert_inline_inode(inode);
3258 if (ret)
3259 goto out;
3260
3261 if (f2fs_disable_compressed_file(inode)) {
3262 ret = -EOPNOTSUPP;
3263 goto out;
3264 }
3265
3266 set_inode_flag(inode, FI_PIN_FILE);
3267 ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
3268done:
3269 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3270out:
3271 inode_unlock(inode);
3272 mnt_drop_write_file(filp);
3273 return ret;
3274}
3275
3276static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg)
3277{
3278 struct inode *inode = file_inode(filp);
3279 __u32 pin = 0;
3280
3281 if (is_inode_flag_set(inode, FI_PIN_FILE))
3282 pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
3283 return put_user(pin, (u32 __user *)arg);
3284}
3285
3286int f2fs_precache_extents(struct inode *inode)
3287{
3288 struct f2fs_inode_info *fi = F2FS_I(inode);
3289 struct f2fs_map_blocks map;
3290 pgoff_t m_next_extent;
3291 loff_t end;
3292 int err;
3293
3294 if (is_inode_flag_set(inode, FI_NO_EXTENT))
3295 return -EOPNOTSUPP;
3296
3297 map.m_lblk = 0;
3298 map.m_next_pgofs = NULL;
3299 map.m_next_extent = &m_next_extent;
3300 map.m_seg_type = NO_CHECK_TYPE;
3301 map.m_may_create = false;
3302 end = F2FS_I_SB(inode)->max_file_blocks;
3303
3304 while (map.m_lblk < end) {
3305 map.m_len = end - map.m_lblk;
3306
3307 down_write(&fi->i_gc_rwsem[WRITE]);
3308 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE);
3309 up_write(&fi->i_gc_rwsem[WRITE]);
3310 if (err)
3311 return err;
3312
3313 map.m_lblk = m_next_extent;
3314 }
3315
3316 return err;
3317}
3318
3319static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg)
3320{
3321 return f2fs_precache_extents(file_inode(filp));
3322}
3323
3324static int f2fs_ioc_resize_fs(struct file *filp, unsigned long arg)
3325{
3326 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
3327 __u64 block_count;
3328
3329 if (!capable(CAP_SYS_ADMIN))
3330 return -EPERM;
3331
3332 if (f2fs_readonly(sbi->sb))
3333 return -EROFS;
3334
3335 if (copy_from_user(&block_count, (void __user *)arg,
3336 sizeof(block_count)))
3337 return -EFAULT;
3338
3339 return f2fs_resize_fs(sbi, block_count);
3340}
3341
3342static int f2fs_ioc_enable_verity(struct file *filp, unsigned long arg)
3343{
3344 struct inode *inode = file_inode(filp);
3345
3346 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3347
3348 if (!f2fs_sb_has_verity(F2FS_I_SB(inode))) {
3349 f2fs_warn(F2FS_I_SB(inode),
3350 "Can't enable fs-verity on inode %lu: the verity feature is not enabled on this filesystem.\n",
3351 inode->i_ino);
3352 return -EOPNOTSUPP;
3353 }
3354
3355 return fsverity_ioctl_enable(filp, (const void __user *)arg);
3356}
3357
3358static int f2fs_ioc_measure_verity(struct file *filp, unsigned long arg)
3359{
3360 if (!f2fs_sb_has_verity(F2FS_I_SB(file_inode(filp))))
3361 return -EOPNOTSUPP;
3362
3363 return fsverity_ioctl_measure(filp, (void __user *)arg);
3364}
3365
3366static int f2fs_ioc_getfslabel(struct file *filp, unsigned long arg)
3367{
3368 struct inode *inode = file_inode(filp);
3369 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3370 char *vbuf;
3371 int count;
3372 int err = 0;
3373
3374 vbuf = f2fs_kzalloc(sbi, MAX_VOLUME_NAME, GFP_KERNEL);
3375 if (!vbuf)
3376 return -ENOMEM;
3377
3378 down_read(&sbi->sb_lock);
3379 count = utf16s_to_utf8s(sbi->raw_super->volume_name,
3380 ARRAY_SIZE(sbi->raw_super->volume_name),
3381 UTF16_LITTLE_ENDIAN, vbuf, MAX_VOLUME_NAME);
3382 up_read(&sbi->sb_lock);
3383
3384 if (copy_to_user((char __user *)arg, vbuf,
3385 min(FSLABEL_MAX, count)))
3386 err = -EFAULT;
3387
3388 kvfree(vbuf);
3389 return err;
3390}
3391
3392static int f2fs_ioc_setfslabel(struct file *filp, unsigned long arg)
3393{
3394 struct inode *inode = file_inode(filp);
3395 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3396 char *vbuf;
3397 int err = 0;
3398
3399 if (!capable(CAP_SYS_ADMIN))
3400 return -EPERM;
3401
3402 vbuf = strndup_user((const char __user *)arg, FSLABEL_MAX);
3403 if (IS_ERR(vbuf))
3404 return PTR_ERR(vbuf);
3405
3406 err = mnt_want_write_file(filp);
3407 if (err)
3408 goto out;
3409
3410 down_write(&sbi->sb_lock);
3411
3412 memset(sbi->raw_super->volume_name, 0,
3413 sizeof(sbi->raw_super->volume_name));
3414 utf8s_to_utf16s(vbuf, strlen(vbuf), UTF16_LITTLE_ENDIAN,
3415 sbi->raw_super->volume_name,
3416 ARRAY_SIZE(sbi->raw_super->volume_name));
3417
3418 err = f2fs_commit_super(sbi, false);
3419
3420 up_write(&sbi->sb_lock);
3421
3422 mnt_drop_write_file(filp);
3423out:
3424 kfree(vbuf);
3425 return err;
3426}
3427
3428static int f2fs_get_compress_blocks(struct file *filp, unsigned long arg)
3429{
3430 struct inode *inode = file_inode(filp);
3431 __u64 blocks;
3432
3433 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3434 return -EOPNOTSUPP;
3435
3436 if (!f2fs_compressed_file(inode))
3437 return -EINVAL;
3438
3439 blocks = F2FS_I(inode)->i_compr_blocks;
3440 return put_user(blocks, (u64 __user *)arg);
3441}
3442
3443static int release_compress_blocks(struct dnode_of_data *dn, pgoff_t count)
3444{
3445 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
3446 unsigned int released_blocks = 0;
3447 int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
3448 block_t blkaddr;
3449 int i;
3450
3451 for (i = 0; i < count; i++) {
3452 blkaddr = data_blkaddr(dn->inode, dn->node_page,
3453 dn->ofs_in_node + i);
3454
3455 if (!__is_valid_data_blkaddr(blkaddr))
3456 continue;
3457 if (unlikely(!f2fs_is_valid_blkaddr(sbi, blkaddr,
3458 DATA_GENERIC_ENHANCE)))
3459 return -EFSCORRUPTED;
3460 }
3461
3462 while (count) {
3463 int compr_blocks = 0;
3464
3465 for (i = 0; i < cluster_size; i++, dn->ofs_in_node++) {
3466 blkaddr = f2fs_data_blkaddr(dn);
3467
3468 if (i == 0) {
3469 if (blkaddr == COMPRESS_ADDR)
3470 continue;
3471 dn->ofs_in_node += cluster_size;
3472 goto next;
3473 }
3474
3475 if (__is_valid_data_blkaddr(blkaddr))
3476 compr_blocks++;
3477
3478 if (blkaddr != NEW_ADDR)
3479 continue;
3480
3481 dn->data_blkaddr = NULL_ADDR;
3482 f2fs_set_data_blkaddr(dn);
3483 }
3484
3485 f2fs_i_compr_blocks_update(dn->inode, compr_blocks, false);
3486 dec_valid_block_count(sbi, dn->inode,
3487 cluster_size - compr_blocks);
3488
3489 released_blocks += cluster_size - compr_blocks;
3490next:
3491 count -= cluster_size;
3492 }
3493
3494 return released_blocks;
3495}
3496
3497static int f2fs_release_compress_blocks(struct file *filp, unsigned long arg)
3498{
3499 struct inode *inode = file_inode(filp);
3500 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3501 pgoff_t page_idx = 0, last_idx;
3502 unsigned int released_blocks = 0;
3503 int ret;
3504 int writecount;
3505
3506 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3507 return -EOPNOTSUPP;
3508
3509 if (!f2fs_compressed_file(inode))
3510 return -EINVAL;
3511
3512 if (f2fs_readonly(sbi->sb))
3513 return -EROFS;
3514
3515 ret = mnt_want_write_file(filp);
3516 if (ret)
3517 return ret;
3518
3519 f2fs_balance_fs(F2FS_I_SB(inode), true);
3520
3521 inode_lock(inode);
3522
3523 writecount = atomic_read(&inode->i_writecount);
3524 if ((filp->f_mode & FMODE_WRITE && writecount != 1) || writecount) {
3525 ret = -EBUSY;
3526 goto out;
3527 }
3528
3529 if (IS_IMMUTABLE(inode)) {
3530 ret = -EINVAL;
3531 goto out;
3532 }
3533
3534 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
3535 if (ret)
3536 goto out;
3537
3538 F2FS_I(inode)->i_flags |= F2FS_IMMUTABLE_FL;
3539 f2fs_set_inode_flags(inode);
3540 inode->i_ctime = current_time(inode);
3541 f2fs_mark_inode_dirty_sync(inode, true);
3542
3543 if (!F2FS_I(inode)->i_compr_blocks)
3544 goto out;
3545
3546 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3547 down_write(&F2FS_I(inode)->i_mmap_sem);
3548
3549 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
3550
3551 while (page_idx < last_idx) {
3552 struct dnode_of_data dn;
3553 pgoff_t end_offset, count;
3554
3555 set_new_dnode(&dn, inode, NULL, NULL, 0);
3556 ret = f2fs_get_dnode_of_data(&dn, page_idx, LOOKUP_NODE);
3557 if (ret) {
3558 if (ret == -ENOENT) {
3559 page_idx = f2fs_get_next_page_offset(&dn,
3560 page_idx);
3561 ret = 0;
3562 continue;
3563 }
3564 break;
3565 }
3566
3567 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3568 count = min(end_offset - dn.ofs_in_node, last_idx - page_idx);
3569 count = round_up(count, F2FS_I(inode)->i_cluster_size);
3570
3571 ret = release_compress_blocks(&dn, count);
3572
3573 f2fs_put_dnode(&dn);
3574
3575 if (ret < 0)
3576 break;
3577
3578 page_idx += count;
3579 released_blocks += ret;
3580 }
3581
3582 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3583 up_write(&F2FS_I(inode)->i_mmap_sem);
3584out:
3585 inode_unlock(inode);
3586
3587 mnt_drop_write_file(filp);
3588
3589 if (ret >= 0) {
3590 ret = put_user(released_blocks, (u64 __user *)arg);
3591 } else if (released_blocks && F2FS_I(inode)->i_compr_blocks) {
3592 set_sbi_flag(sbi, SBI_NEED_FSCK);
3593 f2fs_warn(sbi, "%s: partial blocks were released i_ino=%lx "
3594 "iblocks=%llu, released=%u, compr_blocks=%llu, "
3595 "run fsck to fix.",
3596 __func__, inode->i_ino, inode->i_blocks,
3597 released_blocks,
3598 F2FS_I(inode)->i_compr_blocks);
3599 }
3600
3601 return ret;
3602}
3603
3604static int reserve_compress_blocks(struct dnode_of_data *dn, pgoff_t count)
3605{
3606 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
3607 unsigned int reserved_blocks = 0;
3608 int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
3609 block_t blkaddr;
3610 int i;
3611
3612 for (i = 0; i < count; i++) {
3613 blkaddr = data_blkaddr(dn->inode, dn->node_page,
3614 dn->ofs_in_node + i);
3615
3616 if (!__is_valid_data_blkaddr(blkaddr))
3617 continue;
3618 if (unlikely(!f2fs_is_valid_blkaddr(sbi, blkaddr,
3619 DATA_GENERIC_ENHANCE)))
3620 return -EFSCORRUPTED;
3621 }
3622
3623 while (count) {
3624 int compr_blocks = 0;
3625 blkcnt_t reserved;
3626 int ret;
3627
3628 for (i = 0; i < cluster_size; i++, dn->ofs_in_node++) {
3629 blkaddr = f2fs_data_blkaddr(dn);
3630
3631 if (i == 0) {
3632 if (blkaddr == COMPRESS_ADDR)
3633 continue;
3634 dn->ofs_in_node += cluster_size;
3635 goto next;
3636 }
3637
3638 if (__is_valid_data_blkaddr(blkaddr)) {
3639 compr_blocks++;
3640 continue;
3641 }
3642
3643 dn->data_blkaddr = NEW_ADDR;
3644 f2fs_set_data_blkaddr(dn);
3645 }
3646
3647 reserved = cluster_size - compr_blocks;
3648 ret = inc_valid_block_count(sbi, dn->inode, &reserved);
3649 if (ret)
3650 return ret;
3651
3652 if (reserved != cluster_size - compr_blocks)
3653 return -ENOSPC;
3654
3655 f2fs_i_compr_blocks_update(dn->inode, compr_blocks, true);
3656
3657 reserved_blocks += reserved;
3658next:
3659 count -= cluster_size;
3660 }
3661
3662 return reserved_blocks;
3663}
3664
3665static int f2fs_reserve_compress_blocks(struct file *filp, unsigned long arg)
3666{
3667 struct inode *inode = file_inode(filp);
3668 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3669 pgoff_t page_idx = 0, last_idx;
3670 unsigned int reserved_blocks = 0;
3671 int ret;
3672
3673 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3674 return -EOPNOTSUPP;
3675
3676 if (!f2fs_compressed_file(inode))
3677 return -EINVAL;
3678
3679 if (f2fs_readonly(sbi->sb))
3680 return -EROFS;
3681
3682 ret = mnt_want_write_file(filp);
3683 if (ret)
3684 return ret;
3685
3686 if (F2FS_I(inode)->i_compr_blocks)
3687 goto out;
3688
3689 f2fs_balance_fs(F2FS_I_SB(inode), true);
3690
3691 inode_lock(inode);
3692
3693 if (!IS_IMMUTABLE(inode)) {
3694 ret = -EINVAL;
3695 goto unlock_inode;
3696 }
3697
3698 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3699 down_write(&F2FS_I(inode)->i_mmap_sem);
3700
3701 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
3702
3703 while (page_idx < last_idx) {
3704 struct dnode_of_data dn;
3705 pgoff_t end_offset, count;
3706
3707 set_new_dnode(&dn, inode, NULL, NULL, 0);
3708 ret = f2fs_get_dnode_of_data(&dn, page_idx, LOOKUP_NODE);
3709 if (ret) {
3710 if (ret == -ENOENT) {
3711 page_idx = f2fs_get_next_page_offset(&dn,
3712 page_idx);
3713 ret = 0;
3714 continue;
3715 }
3716 break;
3717 }
3718
3719 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3720 count = min(end_offset - dn.ofs_in_node, last_idx - page_idx);
3721 count = round_up(count, F2FS_I(inode)->i_cluster_size);
3722
3723 ret = reserve_compress_blocks(&dn, count);
3724
3725 f2fs_put_dnode(&dn);
3726
3727 if (ret < 0)
3728 break;
3729
3730 page_idx += count;
3731 reserved_blocks += ret;
3732 }
3733
3734 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3735 up_write(&F2FS_I(inode)->i_mmap_sem);
3736
3737 if (ret >= 0) {
3738 F2FS_I(inode)->i_flags &= ~F2FS_IMMUTABLE_FL;
3739 f2fs_set_inode_flags(inode);
3740 inode->i_ctime = current_time(inode);
3741 f2fs_mark_inode_dirty_sync(inode, true);
3742 }
3743unlock_inode:
3744 inode_unlock(inode);
3745out:
3746 mnt_drop_write_file(filp);
3747
3748 if (ret >= 0) {
3749 ret = put_user(reserved_blocks, (u64 __user *)arg);
3750 } else if (reserved_blocks && F2FS_I(inode)->i_compr_blocks) {
3751 set_sbi_flag(sbi, SBI_NEED_FSCK);
3752 f2fs_warn(sbi, "%s: partial blocks were released i_ino=%lx "
3753 "iblocks=%llu, reserved=%u, compr_blocks=%llu, "
3754 "run fsck to fix.",
3755 __func__, inode->i_ino, inode->i_blocks,
3756 reserved_blocks,
3757 F2FS_I(inode)->i_compr_blocks);
3758 }
3759
3760 return ret;
3761}
3762
3763static int f2fs_secure_erase(struct block_device *bdev, struct inode *inode,
3764 pgoff_t off, block_t block, block_t len, u32 flags)
3765{
3766 struct request_queue *q = bdev_get_queue(bdev);
3767 sector_t sector = SECTOR_FROM_BLOCK(block);
3768 sector_t nr_sects = SECTOR_FROM_BLOCK(len);
3769 int ret = 0;
3770
3771 if (!q)
3772 return -ENXIO;
3773
3774 if (flags & F2FS_TRIM_FILE_DISCARD)
3775 ret = blkdev_issue_discard(bdev, sector, nr_sects, GFP_NOFS,
3776 blk_queue_secure_erase(q) ?
3777 BLKDEV_DISCARD_SECURE : 0);
3778
3779 if (!ret && (flags & F2FS_TRIM_FILE_ZEROOUT)) {
3780 if (IS_ENCRYPTED(inode))
3781 ret = fscrypt_zeroout_range(inode, off, block, len);
3782 else
3783 ret = blkdev_issue_zeroout(bdev, sector, nr_sects,
3784 GFP_NOFS, 0);
3785 }
3786
3787 return ret;
3788}
3789
3790static int f2fs_sec_trim_file(struct file *filp, unsigned long arg)
3791{
3792 struct inode *inode = file_inode(filp);
3793 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3794 struct address_space *mapping = inode->i_mapping;
3795 struct block_device *prev_bdev = NULL;
3796 struct f2fs_sectrim_range range;
3797 pgoff_t index, pg_end, prev_index = 0;
3798 block_t prev_block = 0, len = 0;
3799 loff_t end_addr;
3800 bool to_end = false;
3801 int ret = 0;
3802
3803 if (!(filp->f_mode & FMODE_WRITE))
3804 return -EBADF;
3805
3806 if (copy_from_user(&range, (struct f2fs_sectrim_range __user *)arg,
3807 sizeof(range)))
3808 return -EFAULT;
3809
3810 if (range.flags == 0 || (range.flags & ~F2FS_TRIM_FILE_MASK) ||
3811 !S_ISREG(inode->i_mode))
3812 return -EINVAL;
3813
3814 if (((range.flags & F2FS_TRIM_FILE_DISCARD) &&
3815 !f2fs_hw_support_discard(sbi)) ||
3816 ((range.flags & F2FS_TRIM_FILE_ZEROOUT) &&
3817 IS_ENCRYPTED(inode) && f2fs_is_multi_device(sbi)))
3818 return -EOPNOTSUPP;
3819
3820 file_start_write(filp);
3821 inode_lock(inode);
3822
3823 if (f2fs_is_atomic_file(inode) || f2fs_compressed_file(inode) ||
3824 range.start >= inode->i_size) {
3825 ret = -EINVAL;
3826 goto err;
3827 }
3828
3829 if (range.len == 0)
3830 goto err;
3831
3832 if (inode->i_size - range.start > range.len) {
3833 end_addr = range.start + range.len;
3834 } else {
3835 end_addr = range.len == (u64)-1 ?
3836 sbi->sb->s_maxbytes : inode->i_size;
3837 to_end = true;
3838 }
3839
3840 if (!IS_ALIGNED(range.start, F2FS_BLKSIZE) ||
3841 (!to_end && !IS_ALIGNED(end_addr, F2FS_BLKSIZE))) {
3842 ret = -EINVAL;
3843 goto err;
3844 }
3845
3846 index = F2FS_BYTES_TO_BLK(range.start);
3847 pg_end = DIV_ROUND_UP(end_addr, F2FS_BLKSIZE);
3848
3849 ret = f2fs_convert_inline_inode(inode);
3850 if (ret)
3851 goto err;
3852
3853 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3854 down_write(&F2FS_I(inode)->i_mmap_sem);
3855
3856 ret = filemap_write_and_wait_range(mapping, range.start,
3857 to_end ? LLONG_MAX : end_addr - 1);
3858 if (ret)
3859 goto out;
3860
3861 truncate_inode_pages_range(mapping, range.start,
3862 to_end ? -1 : end_addr - 1);
3863
3864 while (index < pg_end) {
3865 struct dnode_of_data dn;
3866 pgoff_t end_offset, count;
3867 int i;
3868
3869 set_new_dnode(&dn, inode, NULL, NULL, 0);
3870 ret = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE);
3871 if (ret) {
3872 if (ret == -ENOENT) {
3873 index = f2fs_get_next_page_offset(&dn, index);
3874 continue;
3875 }
3876 goto out;
3877 }
3878
3879 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3880 count = min(end_offset - dn.ofs_in_node, pg_end - index);
3881 for (i = 0; i < count; i++, index++, dn.ofs_in_node++) {
3882 struct block_device *cur_bdev;
3883 block_t blkaddr = f2fs_data_blkaddr(&dn);
3884
3885 if (!__is_valid_data_blkaddr(blkaddr))
3886 continue;
3887
3888 if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
3889 DATA_GENERIC_ENHANCE)) {
3890 ret = -EFSCORRUPTED;
3891 f2fs_put_dnode(&dn);
3892 goto out;
3893 }
3894
3895 cur_bdev = f2fs_target_device(sbi, blkaddr, NULL);
3896 if (f2fs_is_multi_device(sbi)) {
3897 int di = f2fs_target_device_index(sbi, blkaddr);
3898
3899 blkaddr -= FDEV(di).start_blk;
3900 }
3901
3902 if (len) {
3903 if (prev_bdev == cur_bdev &&
3904 index == prev_index + len &&
3905 blkaddr == prev_block + len) {
3906 len++;
3907 } else {
3908 ret = f2fs_secure_erase(prev_bdev,
3909 inode, prev_index, prev_block,
3910 len, range.flags);
3911 if (ret) {
3912 f2fs_put_dnode(&dn);
3913 goto out;
3914 }
3915
3916 len = 0;
3917 }
3918 }
3919
3920 if (!len) {
3921 prev_bdev = cur_bdev;
3922 prev_index = index;
3923 prev_block = blkaddr;
3924 len = 1;
3925 }
3926 }
3927
3928 f2fs_put_dnode(&dn);
3929
3930 if (fatal_signal_pending(current)) {
3931 ret = -EINTR;
3932 goto out;
3933 }
3934 cond_resched();
3935 }
3936
3937 if (len)
3938 ret = f2fs_secure_erase(prev_bdev, inode, prev_index,
3939 prev_block, len, range.flags);
3940out:
3941 up_write(&F2FS_I(inode)->i_mmap_sem);
3942 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3943err:
3944 inode_unlock(inode);
3945 file_end_write(filp);
3946
3947 return ret;
3948}
3949
3950long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
3951{
3952 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
3953 return -EIO;
3954 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(filp))))
3955 return -ENOSPC;
3956
3957 switch (cmd) {
3958 case FS_IOC_GETFLAGS:
3959 return f2fs_ioc_getflags(filp, arg);
3960 case FS_IOC_SETFLAGS:
3961 return f2fs_ioc_setflags(filp, arg);
3962 case FS_IOC_GETVERSION:
3963 return f2fs_ioc_getversion(filp, arg);
3964 case F2FS_IOC_START_ATOMIC_WRITE:
3965 return f2fs_ioc_start_atomic_write(filp);
3966 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
3967 return f2fs_ioc_commit_atomic_write(filp);
3968 case F2FS_IOC_START_VOLATILE_WRITE:
3969 return f2fs_ioc_start_volatile_write(filp);
3970 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
3971 return f2fs_ioc_release_volatile_write(filp);
3972 case F2FS_IOC_ABORT_VOLATILE_WRITE:
3973 return f2fs_ioc_abort_volatile_write(filp);
3974 case F2FS_IOC_SHUTDOWN:
3975 return f2fs_ioc_shutdown(filp, arg);
3976 case FITRIM:
3977 return f2fs_ioc_fitrim(filp, arg);
3978 case FS_IOC_SET_ENCRYPTION_POLICY:
3979 return f2fs_ioc_set_encryption_policy(filp, arg);
3980 case FS_IOC_GET_ENCRYPTION_POLICY:
3981 return f2fs_ioc_get_encryption_policy(filp, arg);
3982 case FS_IOC_GET_ENCRYPTION_PWSALT:
3983 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
3984 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
3985 return f2fs_ioc_get_encryption_policy_ex(filp, arg);
3986 case FS_IOC_ADD_ENCRYPTION_KEY:
3987 return f2fs_ioc_add_encryption_key(filp, arg);
3988 case FS_IOC_REMOVE_ENCRYPTION_KEY:
3989 return f2fs_ioc_remove_encryption_key(filp, arg);
3990 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
3991 return f2fs_ioc_remove_encryption_key_all_users(filp, arg);
3992 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
3993 return f2fs_ioc_get_encryption_key_status(filp, arg);
3994 case FS_IOC_GET_ENCRYPTION_NONCE:
3995 return f2fs_ioc_get_encryption_nonce(filp, arg);
3996 case F2FS_IOC_GARBAGE_COLLECT:
3997 return f2fs_ioc_gc(filp, arg);
3998 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
3999 return f2fs_ioc_gc_range(filp, arg);
4000 case F2FS_IOC_WRITE_CHECKPOINT:
4001 return f2fs_ioc_write_checkpoint(filp, arg);
4002 case F2FS_IOC_DEFRAGMENT:
4003 return f2fs_ioc_defragment(filp, arg);
4004 case F2FS_IOC_MOVE_RANGE:
4005 return f2fs_ioc_move_range(filp, arg);
4006 case F2FS_IOC_FLUSH_DEVICE:
4007 return f2fs_ioc_flush_device(filp, arg);
4008 case F2FS_IOC_GET_FEATURES:
4009 return f2fs_ioc_get_features(filp, arg);
4010 case FS_IOC_FSGETXATTR:
4011 return f2fs_ioc_fsgetxattr(filp, arg);
4012 case FS_IOC_FSSETXATTR:
4013 return f2fs_ioc_fssetxattr(filp, arg);
4014 case F2FS_IOC_GET_PIN_FILE:
4015 return f2fs_ioc_get_pin_file(filp, arg);
4016 case F2FS_IOC_SET_PIN_FILE:
4017 return f2fs_ioc_set_pin_file(filp, arg);
4018 case F2FS_IOC_PRECACHE_EXTENTS:
4019 return f2fs_ioc_precache_extents(filp, arg);
4020 case F2FS_IOC_RESIZE_FS:
4021 return f2fs_ioc_resize_fs(filp, arg);
4022 case FS_IOC_ENABLE_VERITY:
4023 return f2fs_ioc_enable_verity(filp, arg);
4024 case FS_IOC_MEASURE_VERITY:
4025 return f2fs_ioc_measure_verity(filp, arg);
4026 case FS_IOC_GETFSLABEL:
4027 return f2fs_ioc_getfslabel(filp, arg);
4028 case FS_IOC_SETFSLABEL:
4029 return f2fs_ioc_setfslabel(filp, arg);
4030 case F2FS_IOC_GET_COMPRESS_BLOCKS:
4031 return f2fs_get_compress_blocks(filp, arg);
4032 case F2FS_IOC_RELEASE_COMPRESS_BLOCKS:
4033 return f2fs_release_compress_blocks(filp, arg);
4034 case F2FS_IOC_RESERVE_COMPRESS_BLOCKS:
4035 return f2fs_reserve_compress_blocks(filp, arg);
4036 case F2FS_IOC_SEC_TRIM_FILE:
4037 return f2fs_sec_trim_file(filp, arg);
4038 default:
4039 return -ENOTTY;
4040 }
4041}
4042
4043static ssize_t f2fs_file_read_iter(struct kiocb *iocb, struct iov_iter *iter)
4044{
4045 struct file *file = iocb->ki_filp;
4046 struct inode *inode = file_inode(file);
4047 int ret;
4048
4049 if (!f2fs_is_compress_backend_ready(inode))
4050 return -EOPNOTSUPP;
4051
4052 ret = generic_file_read_iter(iocb, iter);
4053
4054 if (ret > 0)
4055 f2fs_update_iostat(F2FS_I_SB(inode), APP_READ_IO, ret);
4056
4057 return ret;
4058}
4059
4060static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
4061{
4062 struct file *file = iocb->ki_filp;
4063 struct inode *inode = file_inode(file);
4064 ssize_t ret;
4065
4066 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) {
4067 ret = -EIO;
4068 goto out;
4069 }
4070
4071 if (!f2fs_is_compress_backend_ready(inode)) {
4072 ret = -EOPNOTSUPP;
4073 goto out;
4074 }
4075
4076 if (iocb->ki_flags & IOCB_NOWAIT) {
4077 if (!inode_trylock(inode)) {
4078 ret = -EAGAIN;
4079 goto out;
4080 }
4081 } else {
4082 inode_lock(inode);
4083 }
4084
4085 ret = generic_write_checks(iocb, from);
4086 if (ret > 0) {
4087 bool preallocated = false;
4088 size_t target_size = 0;
4089 int err;
4090
4091 if (iov_iter_fault_in_readable(from, iov_iter_count(from)))
4092 set_inode_flag(inode, FI_NO_PREALLOC);
4093
4094 if ((iocb->ki_flags & IOCB_NOWAIT)) {
4095 if (!f2fs_overwrite_io(inode, iocb->ki_pos,
4096 iov_iter_count(from)) ||
4097 f2fs_has_inline_data(inode) ||
4098 f2fs_force_buffered_io(inode, iocb, from)) {
4099 clear_inode_flag(inode, FI_NO_PREALLOC);
4100 inode_unlock(inode);
4101 ret = -EAGAIN;
4102 goto out;
4103 }
4104 goto write;
4105 }
4106
4107 if (is_inode_flag_set(inode, FI_NO_PREALLOC))
4108 goto write;
4109
4110 if (iocb->ki_flags & IOCB_DIRECT) {
4111 /*
4112 * Convert inline data for Direct I/O before entering
4113 * f2fs_direct_IO().
4114 */
4115 err = f2fs_convert_inline_inode(inode);
4116 if (err)
4117 goto out_err;
4118 /*
4119 * If force_buffere_io() is true, we have to allocate
4120 * blocks all the time, since f2fs_direct_IO will fall
4121 * back to buffered IO.
4122 */
4123 if (!f2fs_force_buffered_io(inode, iocb, from) &&
4124 allow_outplace_dio(inode, iocb, from))
4125 goto write;
4126 }
4127 preallocated = true;
4128 target_size = iocb->ki_pos + iov_iter_count(from);
4129
4130 err = f2fs_preallocate_blocks(iocb, from);
4131 if (err) {
4132out_err:
4133 clear_inode_flag(inode, FI_NO_PREALLOC);
4134 inode_unlock(inode);
4135 ret = err;
4136 goto out;
4137 }
4138write:
4139 ret = __generic_file_write_iter(iocb, from);
4140 clear_inode_flag(inode, FI_NO_PREALLOC);
4141
4142 /* if we couldn't write data, we should deallocate blocks. */
4143 if (preallocated && i_size_read(inode) < target_size)
4144 f2fs_truncate(inode);
4145
4146 if (ret > 0)
4147 f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret);
4148 }
4149 inode_unlock(inode);
4150out:
4151 trace_f2fs_file_write_iter(inode, iocb->ki_pos,
4152 iov_iter_count(from), ret);
4153 if (ret > 0)
4154 ret = generic_write_sync(iocb, ret);
4155 return ret;
4156}
4157
4158#ifdef CONFIG_COMPAT
4159long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
4160{
4161 switch (cmd) {
4162 case FS_IOC32_GETFLAGS:
4163 cmd = FS_IOC_GETFLAGS;
4164 break;
4165 case FS_IOC32_SETFLAGS:
4166 cmd = FS_IOC_SETFLAGS;
4167 break;
4168 case FS_IOC32_GETVERSION:
4169 cmd = FS_IOC_GETVERSION;
4170 break;
4171 case F2FS_IOC_START_ATOMIC_WRITE:
4172 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
4173 case F2FS_IOC_START_VOLATILE_WRITE:
4174 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
4175 case F2FS_IOC_ABORT_VOLATILE_WRITE:
4176 case F2FS_IOC_SHUTDOWN:
4177 case FITRIM:
4178 case FS_IOC_SET_ENCRYPTION_POLICY:
4179 case FS_IOC_GET_ENCRYPTION_PWSALT:
4180 case FS_IOC_GET_ENCRYPTION_POLICY:
4181 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
4182 case FS_IOC_ADD_ENCRYPTION_KEY:
4183 case FS_IOC_REMOVE_ENCRYPTION_KEY:
4184 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
4185 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
4186 case FS_IOC_GET_ENCRYPTION_NONCE:
4187 case F2FS_IOC_GARBAGE_COLLECT:
4188 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
4189 case F2FS_IOC_WRITE_CHECKPOINT:
4190 case F2FS_IOC_DEFRAGMENT:
4191 case F2FS_IOC_MOVE_RANGE:
4192 case F2FS_IOC_FLUSH_DEVICE:
4193 case F2FS_IOC_GET_FEATURES:
4194 case FS_IOC_FSGETXATTR:
4195 case FS_IOC_FSSETXATTR:
4196 case F2FS_IOC_GET_PIN_FILE:
4197 case F2FS_IOC_SET_PIN_FILE:
4198 case F2FS_IOC_PRECACHE_EXTENTS:
4199 case F2FS_IOC_RESIZE_FS:
4200 case FS_IOC_ENABLE_VERITY:
4201 case FS_IOC_MEASURE_VERITY:
4202 case FS_IOC_GETFSLABEL:
4203 case FS_IOC_SETFSLABEL:
4204 case F2FS_IOC_GET_COMPRESS_BLOCKS:
4205 case F2FS_IOC_RELEASE_COMPRESS_BLOCKS:
4206 case F2FS_IOC_RESERVE_COMPRESS_BLOCKS:
4207 case F2FS_IOC_SEC_TRIM_FILE:
4208 break;
4209 default:
4210 return -ENOIOCTLCMD;
4211 }
4212 return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
4213}
4214#endif
4215
4216const struct file_operations f2fs_file_operations = {
4217 .llseek = f2fs_llseek,
4218 .read_iter = f2fs_file_read_iter,
4219 .write_iter = f2fs_file_write_iter,
4220 .open = f2fs_file_open,
4221 .release = f2fs_release_file,
4222 .mmap = f2fs_file_mmap,
4223 .flush = f2fs_file_flush,
4224 .fsync = f2fs_sync_file,
4225 .fallocate = f2fs_fallocate,
4226 .unlocked_ioctl = f2fs_ioctl,
4227#ifdef CONFIG_COMPAT
4228 .compat_ioctl = f2fs_compat_ioctl,
4229#endif
4230 .splice_read = generic_file_splice_read,
4231 .splice_write = iter_file_splice_write,
4232};