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Linux 5.6.13
[linux/fpc-iii.git] / fs / f2fs / file.c
bloba41c633ac6cfe5d39a2e3bf29848a053ab29bb90
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
25 #include "f2fs.h"
26 #include "node.h"
27 #include "segment.h"
28 #include "xattr.h"
29 #include "acl.h"
30 #include "gc.h"
31 #include "trace.h"
32 #include <trace/events/f2fs.h>
33
34 static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf)
35 {
36 struct inode *inode = file_inode(vmf->vma->vm_file);
37 vm_fault_t ret;
38
39 down_read(&F2FS_I(inode)->i_mmap_sem);
40 ret = filemap_fault(vmf);
41 up_read(&F2FS_I(inode)->i_mmap_sem);
42
43 trace_f2fs_filemap_fault(inode, vmf->pgoff, (unsigned long)ret);
44
45 return ret;
46 }
47
48 static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf)
49 {
50 struct page *page = vmf->page;
51 struct inode *inode = file_inode(vmf->vma->vm_file);
52 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
53 struct dnode_of_data dn;
54 bool need_alloc = true;
55 int err = 0;
56
57 if (unlikely(f2fs_cp_error(sbi))) {
58 err = -EIO;
59 goto err;
60 }
61
62 if (!f2fs_is_checkpoint_ready(sbi)) {
63 err = -ENOSPC;
64 goto err;
65 }
66
67 #ifdef CONFIG_F2FS_FS_COMPRESSION
68 if (f2fs_compressed_file(inode)) {
69 int ret = f2fs_is_compressed_cluster(inode, page->index);
70
71 if (ret < 0) {
72 err = ret;
73 goto err;
74 } else if (ret) {
75 if (ret < F2FS_I(inode)->i_cluster_size) {
76 err = -EAGAIN;
77 goto err;
78 }
79 need_alloc = false;
80 }
81 }
82 #endif
83 /* should do out of any locked page */
84 if (need_alloc)
85 f2fs_balance_fs(sbi, true);
86
87 sb_start_pagefault(inode->i_sb);
88
89 f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
90
91 file_update_time(vmf->vma->vm_file);
92 down_read(&F2FS_I(inode)->i_mmap_sem);
93 lock_page(page);
94 if (unlikely(page->mapping != inode->i_mapping ||
95 page_offset(page) > i_size_read(inode) ||
96 !PageUptodate(page))) {
97 unlock_page(page);
98 err = -EFAULT;
99 goto out_sem;
100 }
101
102 if (need_alloc) {
103 /* block allocation */
104 __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true);
105 set_new_dnode(&dn, inode, NULL, NULL, 0);
106 err = f2fs_get_block(&dn, page->index);
107 f2fs_put_dnode(&dn);
108 __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false);
109 if (err) {
110 unlock_page(page);
111 goto out_sem;
112 }
113 }
114
115 /* fill the page */
116 f2fs_wait_on_page_writeback(page, DATA, false, true);
117
118 /* wait for GCed page writeback via META_MAPPING */
119 f2fs_wait_on_block_writeback(inode, dn.data_blkaddr);
120
121 /*
122 * check to see if the page is mapped already (no holes)
123 */
124 if (PageMappedToDisk(page))
125 goto out_sem;
126
127 /* page is wholly or partially inside EOF */
128 if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
129 i_size_read(inode)) {
130 loff_t offset;
131
132 offset = i_size_read(inode) & ~PAGE_MASK;
133 zero_user_segment(page, offset, PAGE_SIZE);
134 }
135 set_page_dirty(page);
136 if (!PageUptodate(page))
137 SetPageUptodate(page);
138
139 f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE);
140 f2fs_update_time(sbi, REQ_TIME);
141
142 trace_f2fs_vm_page_mkwrite(page, DATA);
143 out_sem:
144 up_read(&F2FS_I(inode)->i_mmap_sem);
145
146 sb_end_pagefault(inode->i_sb);
147 err:
148 return block_page_mkwrite_return(err);
149 }
150
151 static const struct vm_operations_struct f2fs_file_vm_ops = {
152 .fault = f2fs_filemap_fault,
153 .map_pages = filemap_map_pages,
154 .page_mkwrite = f2fs_vm_page_mkwrite,
155 };
156
157 static int get_parent_ino(struct inode *inode, nid_t *pino)
158 {
159 struct dentry *dentry;
160
161 inode = igrab(inode);
162 dentry = d_find_any_alias(inode);
163 iput(inode);
164 if (!dentry)
165 return 0;
166
167 *pino = parent_ino(dentry);
168 dput(dentry);
169 return 1;
170 }
171
172 static inline enum cp_reason_type need_do_checkpoint(struct inode *inode)
173 {
174 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
175 enum cp_reason_type cp_reason = CP_NO_NEEDED;
176
177 if (!S_ISREG(inode->i_mode))
178 cp_reason = CP_NON_REGULAR;
179 else if (f2fs_compressed_file(inode))
180 cp_reason = CP_COMPRESSED;
181 else if (inode->i_nlink != 1)
182 cp_reason = CP_HARDLINK;
183 else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
184 cp_reason = CP_SB_NEED_CP;
185 else if (file_wrong_pino(inode))
186 cp_reason = CP_WRONG_PINO;
187 else if (!f2fs_space_for_roll_forward(sbi))
188 cp_reason = CP_NO_SPC_ROLL;
189 else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
190 cp_reason = CP_NODE_NEED_CP;
191 else if (test_opt(sbi, FASTBOOT))
192 cp_reason = CP_FASTBOOT_MODE;
193 else if (F2FS_OPTION(sbi).active_logs == 2)
194 cp_reason = CP_SPEC_LOG_NUM;
195 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT &&
196 f2fs_need_dentry_mark(sbi, inode->i_ino) &&
197 f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino,
198 TRANS_DIR_INO))
199 cp_reason = CP_RECOVER_DIR;
200
201 return cp_reason;
202 }
203
204 static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
205 {
206 struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
207 bool ret = false;
208 /* But we need to avoid that there are some inode updates */
209 if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino))
210 ret = true;
211 f2fs_put_page(i, 0);
212 return ret;
213 }
214
215 static void try_to_fix_pino(struct inode *inode)
216 {
217 struct f2fs_inode_info *fi = F2FS_I(inode);
218 nid_t pino;
219
220 down_write(&fi->i_sem);
221 if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
222 get_parent_ino(inode, &pino)) {
223 f2fs_i_pino_write(inode, pino);
224 file_got_pino(inode);
225 }
226 up_write(&fi->i_sem);
227 }
228
229 static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
230 int datasync, bool atomic)
231 {
232 struct inode *inode = file->f_mapping->host;
233 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
234 nid_t ino = inode->i_ino;
235 int ret = 0;
236 enum cp_reason_type cp_reason = 0;
237 struct writeback_control wbc = {
238 .sync_mode = WB_SYNC_ALL,
239 .nr_to_write = LONG_MAX,
240 .for_reclaim = 0,
241 };
242 unsigned int seq_id = 0;
243
244 if (unlikely(f2fs_readonly(inode->i_sb) ||
245 is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
246 return 0;
247
248 trace_f2fs_sync_file_enter(inode);
249
250 if (S_ISDIR(inode->i_mode))
251 goto go_write;
252
253 /* if fdatasync is triggered, let's do in-place-update */
254 if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
255 set_inode_flag(inode, FI_NEED_IPU);
256 ret = file_write_and_wait_range(file, start, end);
257 clear_inode_flag(inode, FI_NEED_IPU);
258
259 if (ret) {
260 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
261 return ret;
262 }
263
264 /* if the inode is dirty, let's recover all the time */
265 if (!f2fs_skip_inode_update(inode, datasync)) {
266 f2fs_write_inode(inode, NULL);
267 goto go_write;
268 }
269
270 /*
271 * if there is no written data, don't waste time to write recovery info.
272 */
273 if (!is_inode_flag_set(inode, FI_APPEND_WRITE) &&
274 !f2fs_exist_written_data(sbi, ino, APPEND_INO)) {
275
276 /* it may call write_inode just prior to fsync */
277 if (need_inode_page_update(sbi, ino))
278 goto go_write;
279
280 if (is_inode_flag_set(inode, FI_UPDATE_WRITE) ||
281 f2fs_exist_written_data(sbi, ino, UPDATE_INO))
282 goto flush_out;
283 goto out;
284 }
285 go_write:
286 /*
287 * Both of fdatasync() and fsync() are able to be recovered from
288 * sudden-power-off.
289 */
290 down_read(&F2FS_I(inode)->i_sem);
291 cp_reason = need_do_checkpoint(inode);
292 up_read(&F2FS_I(inode)->i_sem);
293
294 if (cp_reason) {
295 /* all the dirty node pages should be flushed for POR */
296 ret = f2fs_sync_fs(inode->i_sb, 1);
297
298 /*
299 * We've secured consistency through sync_fs. Following pino
300 * will be used only for fsynced inodes after checkpoint.
301 */
302 try_to_fix_pino(inode);
303 clear_inode_flag(inode, FI_APPEND_WRITE);
304 clear_inode_flag(inode, FI_UPDATE_WRITE);
305 goto out;
306 }
307 sync_nodes:
308 atomic_inc(&sbi->wb_sync_req[NODE]);
309 ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic, &seq_id);
310 atomic_dec(&sbi->wb_sync_req[NODE]);
311 if (ret)
312 goto out;
313
314 /* if cp_error was enabled, we should avoid infinite loop */
315 if (unlikely(f2fs_cp_error(sbi))) {
316 ret = -EIO;
317 goto out;
318 }
319
320 if (f2fs_need_inode_block_update(sbi, ino)) {
321 f2fs_mark_inode_dirty_sync(inode, true);
322 f2fs_write_inode(inode, NULL);
323 goto sync_nodes;
324 }
325
326 /*
327 * If it's atomic_write, it's just fine to keep write ordering. So
328 * here we don't need to wait for node write completion, since we use
329 * node chain which serializes node blocks. If one of node writes are
330 * reordered, we can see simply broken chain, resulting in stopping
331 * roll-forward recovery. It means we'll recover all or none node blocks
332 * given fsync mark.
333 */
334 if (!atomic) {
335 ret = f2fs_wait_on_node_pages_writeback(sbi, seq_id);
336 if (ret)
337 goto out;
338 }
339
340 /* once recovery info is written, don't need to tack this */
341 f2fs_remove_ino_entry(sbi, ino, APPEND_INO);
342 clear_inode_flag(inode, FI_APPEND_WRITE);
343 flush_out:
344 if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER)
345 ret = f2fs_issue_flush(sbi, inode->i_ino);
346 if (!ret) {
347 f2fs_remove_ino_entry(sbi, ino, UPDATE_INO);
348 clear_inode_flag(inode, FI_UPDATE_WRITE);
349 f2fs_remove_ino_entry(sbi, ino, FLUSH_INO);
350 }
351 f2fs_update_time(sbi, REQ_TIME);
352 out:
353 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
354 f2fs_trace_ios(NULL, 1);
355 return ret;
356 }
357
358 int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
359 {
360 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
361 return -EIO;
362 return f2fs_do_sync_file(file, start, end, datasync, false);
363 }
364
365 static pgoff_t __get_first_dirty_index(struct address_space *mapping,
366 pgoff_t pgofs, int whence)
367 {
368 struct page *page;
369 int nr_pages;
370
371 if (whence != SEEK_DATA)
372 return 0;
373
374 /* find first dirty page index */
375 nr_pages = find_get_pages_tag(mapping, &pgofs, PAGECACHE_TAG_DIRTY,
376 1, &page);
377 if (!nr_pages)
378 return ULONG_MAX;
379 pgofs = page->index;
380 put_page(page);
381 return pgofs;
382 }
383
384 static bool __found_offset(struct f2fs_sb_info *sbi, block_t blkaddr,
385 pgoff_t dirty, pgoff_t pgofs, int whence)
386 {
387 switch (whence) {
388 case SEEK_DATA:
389 if ((blkaddr == NEW_ADDR && dirty == pgofs) ||
390 __is_valid_data_blkaddr(blkaddr))
391 return true;
392 break;
393 case SEEK_HOLE:
394 if (blkaddr == NULL_ADDR)
395 return true;
396 break;
397 }
398 return false;
399 }
400
401 static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
402 {
403 struct inode *inode = file->f_mapping->host;
404 loff_t maxbytes = inode->i_sb->s_maxbytes;
405 struct dnode_of_data dn;
406 pgoff_t pgofs, end_offset, dirty;
407 loff_t data_ofs = offset;
408 loff_t isize;
409 int err = 0;
410
411 inode_lock(inode);
412
413 isize = i_size_read(inode);
414 if (offset >= isize)
415 goto fail;
416
417 /* handle inline data case */
418 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) {
419 if (whence == SEEK_HOLE)
420 data_ofs = isize;
421 goto found;
422 }
423
424 pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
425
426 dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence);
427
428 for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
429 set_new_dnode(&dn, inode, NULL, NULL, 0);
430 err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
431 if (err && err != -ENOENT) {
432 goto fail;
433 } else if (err == -ENOENT) {
434 /* direct node does not exists */
435 if (whence == SEEK_DATA) {
436 pgofs = f2fs_get_next_page_offset(&dn, pgofs);
437 continue;
438 } else {
439 goto found;
440 }
441 }
442
443 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
444
445 /* find data/hole in dnode block */
446 for (; dn.ofs_in_node < end_offset;
447 dn.ofs_in_node++, pgofs++,
448 data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
449 block_t blkaddr;
450
451 blkaddr = datablock_addr(dn.inode,
452 dn.node_page, dn.ofs_in_node);
453
454 if (__is_valid_data_blkaddr(blkaddr) &&
455 !f2fs_is_valid_blkaddr(F2FS_I_SB(inode),
456 blkaddr, DATA_GENERIC_ENHANCE)) {
457 f2fs_put_dnode(&dn);
458 goto fail;
459 }
460
461 if (__found_offset(F2FS_I_SB(inode), blkaddr, dirty,
462 pgofs, whence)) {
463 f2fs_put_dnode(&dn);
464 goto found;
465 }
466 }
467 f2fs_put_dnode(&dn);
468 }
469
470 if (whence == SEEK_DATA)
471 goto fail;
472 found:
473 if (whence == SEEK_HOLE && data_ofs > isize)
474 data_ofs = isize;
475 inode_unlock(inode);
476 return vfs_setpos(file, data_ofs, maxbytes);
477 fail:
478 inode_unlock(inode);
479 return -ENXIO;
480 }
481
482 static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
483 {
484 struct inode *inode = file->f_mapping->host;
485 loff_t maxbytes = inode->i_sb->s_maxbytes;
486
487 switch (whence) {
488 case SEEK_SET:
489 case SEEK_CUR:
490 case SEEK_END:
491 return generic_file_llseek_size(file, offset, whence,
492 maxbytes, i_size_read(inode));
493 case SEEK_DATA:
494 case SEEK_HOLE:
495 if (offset < 0)
496 return -ENXIO;
497 return f2fs_seek_block(file, offset, whence);
498 }
499
500 return -EINVAL;
501 }
502
503 static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
504 {
505 struct inode *inode = file_inode(file);
506 int err;
507
508 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
509 return -EIO;
510
511 if (!f2fs_is_compress_backend_ready(inode))
512 return -EOPNOTSUPP;
513
514 /* we don't need to use inline_data strictly */
515 err = f2fs_convert_inline_inode(inode);
516 if (err)
517 return err;
518
519 file_accessed(file);
520 vma->vm_ops = &f2fs_file_vm_ops;
521 set_inode_flag(inode, FI_MMAP_FILE);
522 return 0;
523 }
524
525 static int f2fs_file_open(struct inode *inode, struct file *filp)
526 {
527 int err = fscrypt_file_open(inode, filp);
528
529 if (err)
530 return err;
531
532 if (!f2fs_is_compress_backend_ready(inode))
533 return -EOPNOTSUPP;
534
535 err = fsverity_file_open(inode, filp);
536 if (err)
537 return err;
538
539 filp->f_mode |= FMODE_NOWAIT;
540
541 return dquot_file_open(inode, filp);
542 }
543
544 void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count)
545 {
546 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
547 struct f2fs_node *raw_node;
548 int nr_free = 0, ofs = dn->ofs_in_node, len = count;
549 __le32 *addr;
550 int base = 0;
551 bool compressed_cluster = false;
552 int cluster_index = 0, valid_blocks = 0;
553 int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
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 nr_free++;
593 }
594
595 if (compressed_cluster)
596 f2fs_i_compr_blocks_update(dn->inode, valid_blocks, false);
597
598 if (nr_free) {
599 pgoff_t fofs;
600 /*
601 * once we invalidate valid blkaddr in range [ofs, ofs + count],
602 * we will invalidate all blkaddr in the whole range.
603 */
604 fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page),
605 dn->inode) + ofs;
606 f2fs_update_extent_cache_range(dn, fofs, 0, len);
607 dec_valid_block_count(sbi, dn->inode, nr_free);
608 }
609 dn->ofs_in_node = ofs;
610
611 f2fs_update_time(sbi, REQ_TIME);
612 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
613 dn->ofs_in_node, nr_free);
614 }
615
616 void f2fs_truncate_data_blocks(struct dnode_of_data *dn)
617 {
618 f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK(dn->inode));
619 }
620
621 static int truncate_partial_data_page(struct inode *inode, u64 from,
622 bool cache_only)
623 {
624 loff_t offset = from & (PAGE_SIZE - 1);
625 pgoff_t index = from >> PAGE_SHIFT;
626 struct address_space *mapping = inode->i_mapping;
627 struct page *page;
628
629 if (!offset && !cache_only)
630 return 0;
631
632 if (cache_only) {
633 page = find_lock_page(mapping, index);
634 if (page && PageUptodate(page))
635 goto truncate_out;
636 f2fs_put_page(page, 1);
637 return 0;
638 }
639
640 if (f2fs_compressed_file(inode))
641 return 0;
642
643 page = f2fs_get_lock_data_page(inode, index, true);
644 if (IS_ERR(page))
645 return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
646 truncate_out:
647 f2fs_wait_on_page_writeback(page, DATA, true, true);
648 zero_user(page, offset, PAGE_SIZE - offset);
649
650 /* An encrypted inode should have a key and truncate the last page. */
651 f2fs_bug_on(F2FS_I_SB(inode), cache_only && IS_ENCRYPTED(inode));
652 if (!cache_only)
653 set_page_dirty(page);
654 f2fs_put_page(page, 1);
655 return 0;
656 }
657
658 static int do_truncate_blocks(struct inode *inode, u64 from, bool lock)
659 {
660 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
661 struct dnode_of_data dn;
662 pgoff_t free_from;
663 int count = 0, err = 0;
664 struct page *ipage;
665 bool truncate_page = false;
666
667 trace_f2fs_truncate_blocks_enter(inode, from);
668
669 free_from = (pgoff_t)F2FS_BLK_ALIGN(from);
670
671 if (free_from >= sbi->max_file_blocks)
672 goto free_partial;
673
674 if (lock)
675 f2fs_lock_op(sbi);
676
677 ipage = f2fs_get_node_page(sbi, inode->i_ino);
678 if (IS_ERR(ipage)) {
679 err = PTR_ERR(ipage);
680 goto out;
681 }
682
683 if (f2fs_has_inline_data(inode)) {
684 f2fs_truncate_inline_inode(inode, ipage, from);
685 f2fs_put_page(ipage, 1);
686 truncate_page = true;
687 goto out;
688 }
689
690 set_new_dnode(&dn, inode, ipage, NULL, 0);
691 err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
692 if (err) {
693 if (err == -ENOENT)
694 goto free_next;
695 goto out;
696 }
697
698 count = ADDRS_PER_PAGE(dn.node_page, inode);
699
700 count -= dn.ofs_in_node;
701 f2fs_bug_on(sbi, count < 0);
702
703 if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
704 f2fs_truncate_data_blocks_range(&dn, count);
705 free_from += count;
706 }
707
708 f2fs_put_dnode(&dn);
709 free_next:
710 err = f2fs_truncate_inode_blocks(inode, free_from);
711 out:
712 if (lock)
713 f2fs_unlock_op(sbi);
714 free_partial:
715 /* lastly zero out the first data page */
716 if (!err)
717 err = truncate_partial_data_page(inode, from, truncate_page);
718
719 trace_f2fs_truncate_blocks_exit(inode, err);
720 return err;
721 }
722
723 int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock)
724 {
725 u64 free_from = from;
726
727 /*
728 * for compressed file, only support cluster size
729 * aligned truncation.
730 */
731 if (f2fs_compressed_file(inode)) {
732 size_t cluster_shift = PAGE_SHIFT +
733 F2FS_I(inode)->i_log_cluster_size;
734 size_t cluster_mask = (1 << cluster_shift) - 1;
735
736 free_from = from >> cluster_shift;
737 if (from & cluster_mask)
738 free_from++;
739 free_from <<= cluster_shift;
740 }
741
742 return do_truncate_blocks(inode, free_from, lock);
743 }
744
745 int f2fs_truncate(struct inode *inode)
746 {
747 int err;
748
749 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
750 return -EIO;
751
752 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
753 S_ISLNK(inode->i_mode)))
754 return 0;
755
756 trace_f2fs_truncate(inode);
757
758 if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) {
759 f2fs_show_injection_info(F2FS_I_SB(inode), FAULT_TRUNCATE);
760 return -EIO;
761 }
762
763 /* we should check inline_data size */
764 if (!f2fs_may_inline_data(inode)) {
765 err = f2fs_convert_inline_inode(inode);
766 if (err)
767 return err;
768 }
769
770 err = f2fs_truncate_blocks(inode, i_size_read(inode), true);
771 if (err)
772 return err;
773
774 inode->i_mtime = inode->i_ctime = current_time(inode);
775 f2fs_mark_inode_dirty_sync(inode, false);
776 return 0;
777 }
778
779 int f2fs_getattr(const struct path *path, struct kstat *stat,
780 u32 request_mask, unsigned int query_flags)
781 {
782 struct inode *inode = d_inode(path->dentry);
783 struct f2fs_inode_info *fi = F2FS_I(inode);
784 struct f2fs_inode *ri;
785 unsigned int flags;
786
787 if (f2fs_has_extra_attr(inode) &&
788 f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
789 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
790 stat->result_mask |= STATX_BTIME;
791 stat->btime.tv_sec = fi->i_crtime.tv_sec;
792 stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
793 }
794
795 flags = fi->i_flags;
796 if (flags & F2FS_APPEND_FL)
797 stat->attributes |= STATX_ATTR_APPEND;
798 if (IS_ENCRYPTED(inode))
799 stat->attributes |= STATX_ATTR_ENCRYPTED;
800 if (flags & F2FS_IMMUTABLE_FL)
801 stat->attributes |= STATX_ATTR_IMMUTABLE;
802 if (flags & F2FS_NODUMP_FL)
803 stat->attributes |= STATX_ATTR_NODUMP;
804 if (IS_VERITY(inode))
805 stat->attributes |= STATX_ATTR_VERITY;
806
807 stat->attributes_mask |= (STATX_ATTR_APPEND |
808 STATX_ATTR_ENCRYPTED |
809 STATX_ATTR_IMMUTABLE |
810 STATX_ATTR_NODUMP |
811 STATX_ATTR_VERITY);
812
813 generic_fillattr(inode, stat);
814
815 /* we need to show initial sectors used for inline_data/dentries */
816 if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) ||
817 f2fs_has_inline_dentry(inode))
818 stat->blocks += (stat->size + 511) >> 9;
819
820 return 0;
821 }
822
823 #ifdef CONFIG_F2FS_FS_POSIX_ACL
824 static void __setattr_copy(struct inode *inode, const struct iattr *attr)
825 {
826 unsigned int ia_valid = attr->ia_valid;
827
828 if (ia_valid & ATTR_UID)
829 inode->i_uid = attr->ia_uid;
830 if (ia_valid & ATTR_GID)
831 inode->i_gid = attr->ia_gid;
832 if (ia_valid & ATTR_ATIME)
833 inode->i_atime = attr->ia_atime;
834 if (ia_valid & ATTR_MTIME)
835 inode->i_mtime = attr->ia_mtime;
836 if (ia_valid & ATTR_CTIME)
837 inode->i_ctime = attr->ia_ctime;
838 if (ia_valid & ATTR_MODE) {
839 umode_t mode = attr->ia_mode;
840
841 if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
842 mode &= ~S_ISGID;
843 set_acl_inode(inode, mode);
844 }
845 }
846 #else
847 #define __setattr_copy setattr_copy
848 #endif
849
850 int f2fs_setattr(struct dentry *dentry, struct iattr *attr)
851 {
852 struct inode *inode = d_inode(dentry);
853 int err;
854
855 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
856 return -EIO;
857
858 if ((attr->ia_valid & ATTR_SIZE) &&
859 !f2fs_is_compress_backend_ready(inode))
860 return -EOPNOTSUPP;
861
862 err = setattr_prepare(dentry, attr);
863 if (err)
864 return err;
865
866 err = fscrypt_prepare_setattr(dentry, attr);
867 if (err)
868 return err;
869
870 err = fsverity_prepare_setattr(dentry, attr);
871 if (err)
872 return err;
873
874 if (is_quota_modification(inode, attr)) {
875 err = dquot_initialize(inode);
876 if (err)
877 return err;
878 }
879 if ((attr->ia_valid & ATTR_UID &&
880 !uid_eq(attr->ia_uid, inode->i_uid)) ||
881 (attr->ia_valid & ATTR_GID &&
882 !gid_eq(attr->ia_gid, inode->i_gid))) {
883 f2fs_lock_op(F2FS_I_SB(inode));
884 err = dquot_transfer(inode, attr);
885 if (err) {
886 set_sbi_flag(F2FS_I_SB(inode),
887 SBI_QUOTA_NEED_REPAIR);
888 f2fs_unlock_op(F2FS_I_SB(inode));
889 return err;
890 }
891 /*
892 * update uid/gid under lock_op(), so that dquot and inode can
893 * be updated atomically.
894 */
895 if (attr->ia_valid & ATTR_UID)
896 inode->i_uid = attr->ia_uid;
897 if (attr->ia_valid & ATTR_GID)
898 inode->i_gid = attr->ia_gid;
899 f2fs_mark_inode_dirty_sync(inode, true);
900 f2fs_unlock_op(F2FS_I_SB(inode));
901 }
902
903 if (attr->ia_valid & ATTR_SIZE) {
904 loff_t old_size = i_size_read(inode);
905
906 if (attr->ia_size > MAX_INLINE_DATA(inode)) {
907 /*
908 * should convert inline inode before i_size_write to
909 * keep smaller than inline_data size with inline flag.
910 */
911 err = f2fs_convert_inline_inode(inode);
912 if (err)
913 return err;
914 }
915
916 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
917 down_write(&F2FS_I(inode)->i_mmap_sem);
918
919 truncate_setsize(inode, attr->ia_size);
920
921 if (attr->ia_size <= old_size)
922 err = f2fs_truncate(inode);
923 /*
924 * do not trim all blocks after i_size if target size is
925 * larger than i_size.
926 */
927 up_write(&F2FS_I(inode)->i_mmap_sem);
928 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
929 if (err)
930 return err;
931
932 down_write(&F2FS_I(inode)->i_sem);
933 inode->i_mtime = inode->i_ctime = current_time(inode);
934 F2FS_I(inode)->last_disk_size = i_size_read(inode);
935 up_write(&F2FS_I(inode)->i_sem);
936 }
937
938 __setattr_copy(inode, attr);
939
940 if (attr->ia_valid & ATTR_MODE) {
941 err = posix_acl_chmod(inode, f2fs_get_inode_mode(inode));
942 if (err || is_inode_flag_set(inode, FI_ACL_MODE)) {
943 inode->i_mode = F2FS_I(inode)->i_acl_mode;
944 clear_inode_flag(inode, FI_ACL_MODE);
945 }
946 }
947
948 /* file size may changed here */
949 f2fs_mark_inode_dirty_sync(inode, true);
950
951 /* inode change will produce dirty node pages flushed by checkpoint */
952 f2fs_balance_fs(F2FS_I_SB(inode), true);
953
954 return err;
955 }
956
957 const struct inode_operations f2fs_file_inode_operations = {
958 .getattr = f2fs_getattr,
959 .setattr = f2fs_setattr,
960 .get_acl = f2fs_get_acl,
961 .set_acl = f2fs_set_acl,
962 #ifdef CONFIG_F2FS_FS_XATTR
963 .listxattr = f2fs_listxattr,
964 #endif
965 .fiemap = f2fs_fiemap,
966 };
967
968 static int fill_zero(struct inode *inode, pgoff_t index,
969 loff_t start, loff_t len)
970 {
971 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
972 struct page *page;
973
974 if (!len)
975 return 0;
976
977 f2fs_balance_fs(sbi, true);
978
979 f2fs_lock_op(sbi);
980 page = f2fs_get_new_data_page(inode, NULL, index, false);
981 f2fs_unlock_op(sbi);
982
983 if (IS_ERR(page))
984 return PTR_ERR(page);
985
986 f2fs_wait_on_page_writeback(page, DATA, true, true);
987 zero_user(page, start, len);
988 set_page_dirty(page);
989 f2fs_put_page(page, 1);
990 return 0;
991 }
992
993 int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
994 {
995 int err;
996
997 while (pg_start < pg_end) {
998 struct dnode_of_data dn;
999 pgoff_t end_offset, count;
1000
1001 set_new_dnode(&dn, inode, NULL, NULL, 0);
1002 err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
1003 if (err) {
1004 if (err == -ENOENT) {
1005 pg_start = f2fs_get_next_page_offset(&dn,
1006 pg_start);
1007 continue;
1008 }
1009 return err;
1010 }
1011
1012 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1013 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
1014
1015 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
1016
1017 f2fs_truncate_data_blocks_range(&dn, count);
1018 f2fs_put_dnode(&dn);
1019
1020 pg_start += count;
1021 }
1022 return 0;
1023 }
1024
1025 static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
1026 {
1027 pgoff_t pg_start, pg_end;
1028 loff_t off_start, off_end;
1029 int ret;
1030
1031 ret = f2fs_convert_inline_inode(inode);
1032 if (ret)
1033 return ret;
1034
1035 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1036 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
1037
1038 off_start = offset & (PAGE_SIZE - 1);
1039 off_end = (offset + len) & (PAGE_SIZE - 1);
1040
1041 if (pg_start == pg_end) {
1042 ret = fill_zero(inode, pg_start, off_start,
1043 off_end - off_start);
1044 if (ret)
1045 return ret;
1046 } else {
1047 if (off_start) {
1048 ret = fill_zero(inode, pg_start++, off_start,
1049 PAGE_SIZE - off_start);
1050 if (ret)
1051 return ret;
1052 }
1053 if (off_end) {
1054 ret = fill_zero(inode, pg_end, 0, off_end);
1055 if (ret)
1056 return ret;
1057 }
1058
1059 if (pg_start < pg_end) {
1060 struct address_space *mapping = inode->i_mapping;
1061 loff_t blk_start, blk_end;
1062 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1063
1064 f2fs_balance_fs(sbi, true);
1065
1066 blk_start = (loff_t)pg_start << PAGE_SHIFT;
1067 blk_end = (loff_t)pg_end << PAGE_SHIFT;
1068
1069 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1070 down_write(&F2FS_I(inode)->i_mmap_sem);
1071
1072 truncate_inode_pages_range(mapping, blk_start,
1073 blk_end - 1);
1074
1075 f2fs_lock_op(sbi);
1076 ret = f2fs_truncate_hole(inode, pg_start, pg_end);
1077 f2fs_unlock_op(sbi);
1078
1079 up_write(&F2FS_I(inode)->i_mmap_sem);
1080 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1081 }
1082 }
1083
1084 return ret;
1085 }
1086
1087 static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr,
1088 int *do_replace, pgoff_t off, pgoff_t len)
1089 {
1090 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1091 struct dnode_of_data dn;
1092 int ret, done, i;
1093
1094 next_dnode:
1095 set_new_dnode(&dn, inode, NULL, NULL, 0);
1096 ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA);
1097 if (ret && ret != -ENOENT) {
1098 return ret;
1099 } else if (ret == -ENOENT) {
1100 if (dn.max_level == 0)
1101 return -ENOENT;
1102 done = min((pgoff_t)ADDRS_PER_BLOCK(inode) -
1103 dn.ofs_in_node, len);
1104 blkaddr += done;
1105 do_replace += done;
1106 goto next;
1107 }
1108
1109 done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) -
1110 dn.ofs_in_node, len);
1111 for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) {
1112 *blkaddr = datablock_addr(dn.inode,
1113 dn.node_page, dn.ofs_in_node);
1114
1115 if (__is_valid_data_blkaddr(*blkaddr) &&
1116 !f2fs_is_valid_blkaddr(sbi, *blkaddr,
1117 DATA_GENERIC_ENHANCE)) {
1118 f2fs_put_dnode(&dn);
1119 return -EFSCORRUPTED;
1120 }
1121
1122 if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) {
1123
1124 if (test_opt(sbi, LFS)) {
1125 f2fs_put_dnode(&dn);
1126 return -EOPNOTSUPP;
1127 }
1128
1129 /* do not invalidate this block address */
1130 f2fs_update_data_blkaddr(&dn, NULL_ADDR);
1131 *do_replace = 1;
1132 }
1133 }
1134 f2fs_put_dnode(&dn);
1135 next:
1136 len -= done;
1137 off += done;
1138 if (len)
1139 goto next_dnode;
1140 return 0;
1141 }
1142
1143 static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr,
1144 int *do_replace, pgoff_t off, int len)
1145 {
1146 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1147 struct dnode_of_data dn;
1148 int ret, i;
1149
1150 for (i = 0; i < len; i++, do_replace++, blkaddr++) {
1151 if (*do_replace == 0)
1152 continue;
1153
1154 set_new_dnode(&dn, inode, NULL, NULL, 0);
1155 ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA);
1156 if (ret) {
1157 dec_valid_block_count(sbi, inode, 1);
1158 f2fs_invalidate_blocks(sbi, *blkaddr);
1159 } else {
1160 f2fs_update_data_blkaddr(&dn, *blkaddr);
1161 }
1162 f2fs_put_dnode(&dn);
1163 }
1164 return 0;
1165 }
1166
1167 static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode,
1168 block_t *blkaddr, int *do_replace,
1169 pgoff_t src, pgoff_t dst, pgoff_t len, bool full)
1170 {
1171 struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode);
1172 pgoff_t i = 0;
1173 int ret;
1174
1175 while (i < len) {
1176 if (blkaddr[i] == NULL_ADDR && !full) {
1177 i++;
1178 continue;
1179 }
1180
1181 if (do_replace[i] || blkaddr[i] == NULL_ADDR) {
1182 struct dnode_of_data dn;
1183 struct node_info ni;
1184 size_t new_size;
1185 pgoff_t ilen;
1186
1187 set_new_dnode(&dn, dst_inode, NULL, NULL, 0);
1188 ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE);
1189 if (ret)
1190 return ret;
1191
1192 ret = f2fs_get_node_info(sbi, dn.nid, &ni);
1193 if (ret) {
1194 f2fs_put_dnode(&dn);
1195 return ret;
1196 }
1197
1198 ilen = min((pgoff_t)
1199 ADDRS_PER_PAGE(dn.node_page, dst_inode) -
1200 dn.ofs_in_node, len - i);
1201 do {
1202 dn.data_blkaddr = datablock_addr(dn.inode,
1203 dn.node_page, dn.ofs_in_node);
1204 f2fs_truncate_data_blocks_range(&dn, 1);
1205
1206 if (do_replace[i]) {
1207 f2fs_i_blocks_write(src_inode,
1208 1, false, false);
1209 f2fs_i_blocks_write(dst_inode,
1210 1, true, false);
1211 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
1212 blkaddr[i], ni.version, true, false);
1213
1214 do_replace[i] = 0;
1215 }
1216 dn.ofs_in_node++;
1217 i++;
1218 new_size = (loff_t)(dst + i) << PAGE_SHIFT;
1219 if (dst_inode->i_size < new_size)
1220 f2fs_i_size_write(dst_inode, new_size);
1221 } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR));
1222
1223 f2fs_put_dnode(&dn);
1224 } else {
1225 struct page *psrc, *pdst;
1226
1227 psrc = f2fs_get_lock_data_page(src_inode,
1228 src + i, true);
1229 if (IS_ERR(psrc))
1230 return PTR_ERR(psrc);
1231 pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i,
1232 true);
1233 if (IS_ERR(pdst)) {
1234 f2fs_put_page(psrc, 1);
1235 return PTR_ERR(pdst);
1236 }
1237 f2fs_copy_page(psrc, pdst);
1238 set_page_dirty(pdst);
1239 f2fs_put_page(pdst, 1);
1240 f2fs_put_page(psrc, 1);
1241
1242 ret = f2fs_truncate_hole(src_inode,
1243 src + i, src + i + 1);
1244 if (ret)
1245 return ret;
1246 i++;
1247 }
1248 }
1249 return 0;
1250 }
1251
1252 static int __exchange_data_block(struct inode *src_inode,
1253 struct inode *dst_inode, pgoff_t src, pgoff_t dst,
1254 pgoff_t len, bool full)
1255 {
1256 block_t *src_blkaddr;
1257 int *do_replace;
1258 pgoff_t olen;
1259 int ret;
1260
1261 while (len) {
1262 olen = min((pgoff_t)4 * ADDRS_PER_BLOCK(src_inode), len);
1263
1264 src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1265 array_size(olen, sizeof(block_t)),
1266 GFP_NOFS);
1267 if (!src_blkaddr)
1268 return -ENOMEM;
1269
1270 do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1271 array_size(olen, sizeof(int)),
1272 GFP_NOFS);
1273 if (!do_replace) {
1274 kvfree(src_blkaddr);
1275 return -ENOMEM;
1276 }
1277
1278 ret = __read_out_blkaddrs(src_inode, src_blkaddr,
1279 do_replace, src, olen);
1280 if (ret)
1281 goto roll_back;
1282
1283 ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr,
1284 do_replace, src, dst, olen, full);
1285 if (ret)
1286 goto roll_back;
1287
1288 src += olen;
1289 dst += olen;
1290 len -= olen;
1291
1292 kvfree(src_blkaddr);
1293 kvfree(do_replace);
1294 }
1295 return 0;
1296
1297 roll_back:
1298 __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen);
1299 kvfree(src_blkaddr);
1300 kvfree(do_replace);
1301 return ret;
1302 }
1303
1304 static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len)
1305 {
1306 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1307 pgoff_t nrpages = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
1308 pgoff_t start = offset >> PAGE_SHIFT;
1309 pgoff_t end = (offset + len) >> PAGE_SHIFT;
1310 int ret;
1311
1312 f2fs_balance_fs(sbi, true);
1313
1314 /* avoid gc operation during block exchange */
1315 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1316 down_write(&F2FS_I(inode)->i_mmap_sem);
1317
1318 f2fs_lock_op(sbi);
1319 f2fs_drop_extent_tree(inode);
1320 truncate_pagecache(inode, offset);
1321 ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
1322 f2fs_unlock_op(sbi);
1323
1324 up_write(&F2FS_I(inode)->i_mmap_sem);
1325 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1326 return ret;
1327 }
1328
1329 static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
1330 {
1331 loff_t new_size;
1332 int ret;
1333
1334 if (offset + len >= i_size_read(inode))
1335 return -EINVAL;
1336
1337 /* collapse range should be aligned to block size of f2fs. */
1338 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1339 return -EINVAL;
1340
1341 ret = f2fs_convert_inline_inode(inode);
1342 if (ret)
1343 return ret;
1344
1345 /* write out all dirty pages from offset */
1346 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1347 if (ret)
1348 return ret;
1349
1350 ret = f2fs_do_collapse(inode, offset, len);
1351 if (ret)
1352 return ret;
1353
1354 /* write out all moved pages, if possible */
1355 down_write(&F2FS_I(inode)->i_mmap_sem);
1356 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1357 truncate_pagecache(inode, offset);
1358
1359 new_size = i_size_read(inode) - len;
1360 truncate_pagecache(inode, new_size);
1361
1362 ret = f2fs_truncate_blocks(inode, new_size, true);
1363 up_write(&F2FS_I(inode)->i_mmap_sem);
1364 if (!ret)
1365 f2fs_i_size_write(inode, new_size);
1366 return ret;
1367 }
1368
1369 static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start,
1370 pgoff_t end)
1371 {
1372 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1373 pgoff_t index = start;
1374 unsigned int ofs_in_node = dn->ofs_in_node;
1375 blkcnt_t count = 0;
1376 int ret;
1377
1378 for (; index < end; index++, dn->ofs_in_node++) {
1379 if (datablock_addr(dn->inode, dn->node_page,
1380 dn->ofs_in_node) == NULL_ADDR)
1381 count++;
1382 }
1383
1384 dn->ofs_in_node = ofs_in_node;
1385 ret = f2fs_reserve_new_blocks(dn, count);
1386 if (ret)
1387 return ret;
1388
1389 dn->ofs_in_node = ofs_in_node;
1390 for (index = start; index < end; index++, dn->ofs_in_node++) {
1391 dn->data_blkaddr = datablock_addr(dn->inode,
1392 dn->node_page, dn->ofs_in_node);
1393 /*
1394 * f2fs_reserve_new_blocks will not guarantee entire block
1395 * allocation.
1396 */
1397 if (dn->data_blkaddr == NULL_ADDR) {
1398 ret = -ENOSPC;
1399 break;
1400 }
1401 if (dn->data_blkaddr != NEW_ADDR) {
1402 f2fs_invalidate_blocks(sbi, dn->data_blkaddr);
1403 dn->data_blkaddr = NEW_ADDR;
1404 f2fs_set_data_blkaddr(dn);
1405 }
1406 }
1407
1408 f2fs_update_extent_cache_range(dn, start, 0, index - start);
1409
1410 return ret;
1411 }
1412
1413 static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
1414 int mode)
1415 {
1416 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1417 struct address_space *mapping = inode->i_mapping;
1418 pgoff_t index, pg_start, pg_end;
1419 loff_t new_size = i_size_read(inode);
1420 loff_t off_start, off_end;
1421 int ret = 0;
1422
1423 ret = inode_newsize_ok(inode, (len + offset));
1424 if (ret)
1425 return ret;
1426
1427 ret = f2fs_convert_inline_inode(inode);
1428 if (ret)
1429 return ret;
1430
1431 ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
1432 if (ret)
1433 return ret;
1434
1435 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1436 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
1437
1438 off_start = offset & (PAGE_SIZE - 1);
1439 off_end = (offset + len) & (PAGE_SIZE - 1);
1440
1441 if (pg_start == pg_end) {
1442 ret = fill_zero(inode, pg_start, off_start,
1443 off_end - off_start);
1444 if (ret)
1445 return ret;
1446
1447 new_size = max_t(loff_t, new_size, offset + len);
1448 } else {
1449 if (off_start) {
1450 ret = fill_zero(inode, pg_start++, off_start,
1451 PAGE_SIZE - off_start);
1452 if (ret)
1453 return ret;
1454
1455 new_size = max_t(loff_t, new_size,
1456 (loff_t)pg_start << PAGE_SHIFT);
1457 }
1458
1459 for (index = pg_start; index < pg_end;) {
1460 struct dnode_of_data dn;
1461 unsigned int end_offset;
1462 pgoff_t end;
1463
1464 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1465 down_write(&F2FS_I(inode)->i_mmap_sem);
1466
1467 truncate_pagecache_range(inode,
1468 (loff_t)index << PAGE_SHIFT,
1469 ((loff_t)pg_end << PAGE_SHIFT) - 1);
1470
1471 f2fs_lock_op(sbi);
1472
1473 set_new_dnode(&dn, inode, NULL, NULL, 0);
1474 ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE);
1475 if (ret) {
1476 f2fs_unlock_op(sbi);
1477 up_write(&F2FS_I(inode)->i_mmap_sem);
1478 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1479 goto out;
1480 }
1481
1482 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1483 end = min(pg_end, end_offset - dn.ofs_in_node + index);
1484
1485 ret = f2fs_do_zero_range(&dn, index, end);
1486 f2fs_put_dnode(&dn);
1487
1488 f2fs_unlock_op(sbi);
1489 up_write(&F2FS_I(inode)->i_mmap_sem);
1490 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1491
1492 f2fs_balance_fs(sbi, dn.node_changed);
1493
1494 if (ret)
1495 goto out;
1496
1497 index = end;
1498 new_size = max_t(loff_t, new_size,
1499 (loff_t)index << PAGE_SHIFT);
1500 }
1501
1502 if (off_end) {
1503 ret = fill_zero(inode, pg_end, 0, off_end);
1504 if (ret)
1505 goto out;
1506
1507 new_size = max_t(loff_t, new_size, offset + len);
1508 }
1509 }
1510
1511 out:
1512 if (new_size > i_size_read(inode)) {
1513 if (mode & FALLOC_FL_KEEP_SIZE)
1514 file_set_keep_isize(inode);
1515 else
1516 f2fs_i_size_write(inode, new_size);
1517 }
1518 return ret;
1519 }
1520
1521 static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
1522 {
1523 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1524 pgoff_t nr, pg_start, pg_end, delta, idx;
1525 loff_t new_size;
1526 int ret = 0;
1527
1528 new_size = i_size_read(inode) + len;
1529 ret = inode_newsize_ok(inode, new_size);
1530 if (ret)
1531 return ret;
1532
1533 if (offset >= i_size_read(inode))
1534 return -EINVAL;
1535
1536 /* insert range should be aligned to block size of f2fs. */
1537 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1538 return -EINVAL;
1539
1540 ret = f2fs_convert_inline_inode(inode);
1541 if (ret)
1542 return ret;
1543
1544 f2fs_balance_fs(sbi, true);
1545
1546 down_write(&F2FS_I(inode)->i_mmap_sem);
1547 ret = f2fs_truncate_blocks(inode, i_size_read(inode), true);
1548 up_write(&F2FS_I(inode)->i_mmap_sem);
1549 if (ret)
1550 return ret;
1551
1552 /* write out all dirty pages from offset */
1553 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1554 if (ret)
1555 return ret;
1556
1557 pg_start = offset >> PAGE_SHIFT;
1558 pg_end = (offset + len) >> PAGE_SHIFT;
1559 delta = pg_end - pg_start;
1560 idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
1561
1562 /* avoid gc operation during block exchange */
1563 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1564 down_write(&F2FS_I(inode)->i_mmap_sem);
1565 truncate_pagecache(inode, offset);
1566
1567 while (!ret && idx > pg_start) {
1568 nr = idx - pg_start;
1569 if (nr > delta)
1570 nr = delta;
1571 idx -= nr;
1572
1573 f2fs_lock_op(sbi);
1574 f2fs_drop_extent_tree(inode);
1575
1576 ret = __exchange_data_block(inode, inode, idx,
1577 idx + delta, nr, false);
1578 f2fs_unlock_op(sbi);
1579 }
1580 up_write(&F2FS_I(inode)->i_mmap_sem);
1581 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1582
1583 /* write out all moved pages, if possible */
1584 down_write(&F2FS_I(inode)->i_mmap_sem);
1585 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1586 truncate_pagecache(inode, offset);
1587 up_write(&F2FS_I(inode)->i_mmap_sem);
1588
1589 if (!ret)
1590 f2fs_i_size_write(inode, new_size);
1591 return ret;
1592 }
1593
1594 static int expand_inode_data(struct inode *inode, loff_t offset,
1595 loff_t len, int mode)
1596 {
1597 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1598 struct f2fs_map_blocks map = { .m_next_pgofs = NULL,
1599 .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE,
1600 .m_may_create = true };
1601 pgoff_t pg_end;
1602 loff_t new_size = i_size_read(inode);
1603 loff_t off_end;
1604 int err;
1605
1606 err = inode_newsize_ok(inode, (len + offset));
1607 if (err)
1608 return err;
1609
1610 err = f2fs_convert_inline_inode(inode);
1611 if (err)
1612 return err;
1613
1614 f2fs_balance_fs(sbi, true);
1615
1616 pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT;
1617 off_end = (offset + len) & (PAGE_SIZE - 1);
1618
1619 map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT;
1620 map.m_len = pg_end - map.m_lblk;
1621 if (off_end)
1622 map.m_len++;
1623
1624 if (!map.m_len)
1625 return 0;
1626
1627 if (f2fs_is_pinned_file(inode)) {
1628 block_t len = (map.m_len >> sbi->log_blocks_per_seg) <<
1629 sbi->log_blocks_per_seg;
1630 block_t done = 0;
1631
1632 if (map.m_len % sbi->blocks_per_seg)
1633 len += sbi->blocks_per_seg;
1634
1635 map.m_len = sbi->blocks_per_seg;
1636 next_alloc:
1637 if (has_not_enough_free_secs(sbi, 0,
1638 GET_SEC_FROM_SEG(sbi, overprovision_segments(sbi)))) {
1639 down_write(&sbi->gc_lock);
1640 err = f2fs_gc(sbi, true, false, NULL_SEGNO);
1641 if (err && err != -ENODATA && err != -EAGAIN)
1642 goto out_err;
1643 }
1644
1645 down_write(&sbi->pin_sem);
1646 map.m_seg_type = CURSEG_COLD_DATA_PINNED;
1647 f2fs_allocate_new_segments(sbi, CURSEG_COLD_DATA);
1648 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_DIO);
1649 up_write(&sbi->pin_sem);
1650
1651 done += map.m_len;
1652 len -= map.m_len;
1653 map.m_lblk += map.m_len;
1654 if (!err && len)
1655 goto next_alloc;
1656
1657 map.m_len = done;
1658 } else {
1659 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
1660 }
1661 out_err:
1662 if (err) {
1663 pgoff_t last_off;
1664
1665 if (!map.m_len)
1666 return err;
1667
1668 last_off = map.m_lblk + map.m_len - 1;
1669
1670 /* update new size to the failed position */
1671 new_size = (last_off == pg_end) ? offset + len :
1672 (loff_t)(last_off + 1) << PAGE_SHIFT;
1673 } else {
1674 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
1675 }
1676
1677 if (new_size > i_size_read(inode)) {
1678 if (mode & FALLOC_FL_KEEP_SIZE)
1679 file_set_keep_isize(inode);
1680 else
1681 f2fs_i_size_write(inode, new_size);
1682 }
1683
1684 return err;
1685 }
1686
1687 static long f2fs_fallocate(struct file *file, int mode,
1688 loff_t offset, loff_t len)
1689 {
1690 struct inode *inode = file_inode(file);
1691 long ret = 0;
1692
1693 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
1694 return -EIO;
1695 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode)))
1696 return -ENOSPC;
1697 if (!f2fs_is_compress_backend_ready(inode))
1698 return -EOPNOTSUPP;
1699
1700 /* f2fs only support ->fallocate for regular file */
1701 if (!S_ISREG(inode->i_mode))
1702 return -EINVAL;
1703
1704 if (IS_ENCRYPTED(inode) &&
1705 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
1706 return -EOPNOTSUPP;
1707
1708 if (f2fs_compressed_file(inode) &&
1709 (mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE |
1710 FALLOC_FL_ZERO_RANGE | FALLOC_FL_INSERT_RANGE)))
1711 return -EOPNOTSUPP;
1712
1713 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
1714 FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1715 FALLOC_FL_INSERT_RANGE))
1716 return -EOPNOTSUPP;
1717
1718 inode_lock(inode);
1719
1720 if (mode & FALLOC_FL_PUNCH_HOLE) {
1721 if (offset >= inode->i_size)
1722 goto out;
1723
1724 ret = punch_hole(inode, offset, len);
1725 } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1726 ret = f2fs_collapse_range(inode, offset, len);
1727 } else if (mode & FALLOC_FL_ZERO_RANGE) {
1728 ret = f2fs_zero_range(inode, offset, len, mode);
1729 } else if (mode & FALLOC_FL_INSERT_RANGE) {
1730 ret = f2fs_insert_range(inode, offset, len);
1731 } else {
1732 ret = expand_inode_data(inode, offset, len, mode);
1733 }
1734
1735 if (!ret) {
1736 inode->i_mtime = inode->i_ctime = current_time(inode);
1737 f2fs_mark_inode_dirty_sync(inode, false);
1738 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1739 }
1740
1741 out:
1742 inode_unlock(inode);
1743
1744 trace_f2fs_fallocate(inode, mode, offset, len, ret);
1745 return ret;
1746 }
1747
1748 static int f2fs_release_file(struct inode *inode, struct file *filp)
1749 {
1750 /*
1751 * f2fs_relase_file is called at every close calls. So we should
1752 * not drop any inmemory pages by close called by other process.
1753 */
1754 if (!(filp->f_mode & FMODE_WRITE) ||
1755 atomic_read(&inode->i_writecount) != 1)
1756 return 0;
1757
1758 /* some remained atomic pages should discarded */
1759 if (f2fs_is_atomic_file(inode))
1760 f2fs_drop_inmem_pages(inode);
1761 if (f2fs_is_volatile_file(inode)) {
1762 set_inode_flag(inode, FI_DROP_CACHE);
1763 filemap_fdatawrite(inode->i_mapping);
1764 clear_inode_flag(inode, FI_DROP_CACHE);
1765 clear_inode_flag(inode, FI_VOLATILE_FILE);
1766 stat_dec_volatile_write(inode);
1767 }
1768 return 0;
1769 }
1770
1771 static int f2fs_file_flush(struct file *file, fl_owner_t id)
1772 {
1773 struct inode *inode = file_inode(file);
1774
1775 /*
1776 * If the process doing a transaction is crashed, we should do
1777 * roll-back. Otherwise, other reader/write can see corrupted database
1778 * until all the writers close its file. Since this should be done
1779 * before dropping file lock, it needs to do in ->flush.
1780 */
1781 if (f2fs_is_atomic_file(inode) &&
1782 F2FS_I(inode)->inmem_task == current)
1783 f2fs_drop_inmem_pages(inode);
1784 return 0;
1785 }
1786
1787 static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask)
1788 {
1789 struct f2fs_inode_info *fi = F2FS_I(inode);
1790 u32 masked_flags = fi->i_flags & mask;
1791
1792 f2fs_bug_on(F2FS_I_SB(inode), (iflags & ~mask));
1793
1794 /* Is it quota file? Do not allow user to mess with it */
1795 if (IS_NOQUOTA(inode))
1796 return -EPERM;
1797
1798 if ((iflags ^ masked_flags) & F2FS_CASEFOLD_FL) {
1799 if (!f2fs_sb_has_casefold(F2FS_I_SB(inode)))
1800 return -EOPNOTSUPP;
1801 if (!f2fs_empty_dir(inode))
1802 return -ENOTEMPTY;
1803 }
1804
1805 if (iflags & (F2FS_COMPR_FL | F2FS_NOCOMP_FL)) {
1806 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
1807 return -EOPNOTSUPP;
1808 if ((iflags & F2FS_COMPR_FL) && (iflags & F2FS_NOCOMP_FL))
1809 return -EINVAL;
1810 }
1811
1812 if ((iflags ^ masked_flags) & F2FS_COMPR_FL) {
1813 if (S_ISREG(inode->i_mode) &&
1814 (masked_flags & F2FS_COMPR_FL || i_size_read(inode) ||
1815 F2FS_HAS_BLOCKS(inode)))
1816 return -EINVAL;
1817 if (iflags & F2FS_NOCOMP_FL)
1818 return -EINVAL;
1819 if (iflags & F2FS_COMPR_FL) {
1820 int err = f2fs_convert_inline_inode(inode);
1821
1822 if (err)
1823 return err;
1824
1825 if (!f2fs_may_compress(inode))
1826 return -EINVAL;
1827
1828 set_compress_context(inode);
1829 }
1830 }
1831 if ((iflags ^ masked_flags) & F2FS_NOCOMP_FL) {
1832 if (masked_flags & F2FS_COMPR_FL)
1833 return -EINVAL;
1834 }
1835
1836 fi->i_flags = iflags | (fi->i_flags & ~mask);
1837 f2fs_bug_on(F2FS_I_SB(inode), (fi->i_flags & F2FS_COMPR_FL) &&
1838 (fi->i_flags & F2FS_NOCOMP_FL));
1839
1840 if (fi->i_flags & F2FS_PROJINHERIT_FL)
1841 set_inode_flag(inode, FI_PROJ_INHERIT);
1842 else
1843 clear_inode_flag(inode, FI_PROJ_INHERIT);
1844
1845 inode->i_ctime = current_time(inode);
1846 f2fs_set_inode_flags(inode);
1847 f2fs_mark_inode_dirty_sync(inode, true);
1848 return 0;
1849 }
1850
1851 /* FS_IOC_GETFLAGS and FS_IOC_SETFLAGS support */
1852
1853 /*
1854 * To make a new on-disk f2fs i_flag gettable via FS_IOC_GETFLAGS, add an entry
1855 * for it to f2fs_fsflags_map[], and add its FS_*_FL equivalent to
1856 * F2FS_GETTABLE_FS_FL. To also make it settable via FS_IOC_SETFLAGS, also add
1857 * its FS_*_FL equivalent to F2FS_SETTABLE_FS_FL.
1858 */
1859
1860 static const struct {
1861 u32 iflag;
1862 u32 fsflag;
1863 } f2fs_fsflags_map[] = {
1864 { F2FS_COMPR_FL, FS_COMPR_FL },
1865 { F2FS_SYNC_FL, FS_SYNC_FL },
1866 { F2FS_IMMUTABLE_FL, FS_IMMUTABLE_FL },
1867 { F2FS_APPEND_FL, FS_APPEND_FL },
1868 { F2FS_NODUMP_FL, FS_NODUMP_FL },
1869 { F2FS_NOATIME_FL, FS_NOATIME_FL },
1870 { F2FS_NOCOMP_FL, FS_NOCOMP_FL },
1871 { F2FS_INDEX_FL, FS_INDEX_FL },
1872 { F2FS_DIRSYNC_FL, FS_DIRSYNC_FL },
1873 { F2FS_PROJINHERIT_FL, FS_PROJINHERIT_FL },
1874 { F2FS_CASEFOLD_FL, FS_CASEFOLD_FL },
1875 };
1876
1877 #define F2FS_GETTABLE_FS_FL ( \
1878 FS_COMPR_FL | \
1879 FS_SYNC_FL | \
1880 FS_IMMUTABLE_FL | \
1881 FS_APPEND_FL | \
1882 FS_NODUMP_FL | \
1883 FS_NOATIME_FL | \
1884 FS_NOCOMP_FL | \
1885 FS_INDEX_FL | \
1886 FS_DIRSYNC_FL | \
1887 FS_PROJINHERIT_FL | \
1888 FS_ENCRYPT_FL | \
1889 FS_INLINE_DATA_FL | \
1890 FS_NOCOW_FL | \
1891 FS_VERITY_FL | \
1892 FS_CASEFOLD_FL)
1893
1894 #define F2FS_SETTABLE_FS_FL ( \
1895 FS_COMPR_FL | \
1896 FS_SYNC_FL | \
1897 FS_IMMUTABLE_FL | \
1898 FS_APPEND_FL | \
1899 FS_NODUMP_FL | \
1900 FS_NOATIME_FL | \
1901 FS_NOCOMP_FL | \
1902 FS_DIRSYNC_FL | \
1903 FS_PROJINHERIT_FL | \
1904 FS_CASEFOLD_FL)
1905
1906 /* Convert f2fs on-disk i_flags to FS_IOC_{GET,SET}FLAGS flags */
1907 static inline u32 f2fs_iflags_to_fsflags(u32 iflags)
1908 {
1909 u32 fsflags = 0;
1910 int i;
1911
1912 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1913 if (iflags & f2fs_fsflags_map[i].iflag)
1914 fsflags |= f2fs_fsflags_map[i].fsflag;
1915
1916 return fsflags;
1917 }
1918
1919 /* Convert FS_IOC_{GET,SET}FLAGS flags to f2fs on-disk i_flags */
1920 static inline u32 f2fs_fsflags_to_iflags(u32 fsflags)
1921 {
1922 u32 iflags = 0;
1923 int i;
1924
1925 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1926 if (fsflags & f2fs_fsflags_map[i].fsflag)
1927 iflags |= f2fs_fsflags_map[i].iflag;
1928
1929 return iflags;
1930 }
1931
1932 static int f2fs_ioc_getflags(struct file *filp, unsigned long arg)
1933 {
1934 struct inode *inode = file_inode(filp);
1935 struct f2fs_inode_info *fi = F2FS_I(inode);
1936 u32 fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
1937
1938 if (IS_ENCRYPTED(inode))
1939 fsflags |= FS_ENCRYPT_FL;
1940 if (IS_VERITY(inode))
1941 fsflags |= FS_VERITY_FL;
1942 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))
1943 fsflags |= FS_INLINE_DATA_FL;
1944 if (is_inode_flag_set(inode, FI_PIN_FILE))
1945 fsflags |= FS_NOCOW_FL;
1946
1947 fsflags &= F2FS_GETTABLE_FS_FL;
1948
1949 return put_user(fsflags, (int __user *)arg);
1950 }
1951
1952 static int f2fs_ioc_setflags(struct file *filp, unsigned long arg)
1953 {
1954 struct inode *inode = file_inode(filp);
1955 struct f2fs_inode_info *fi = F2FS_I(inode);
1956 u32 fsflags, old_fsflags;
1957 u32 iflags;
1958 int ret;
1959
1960 if (!inode_owner_or_capable(inode))
1961 return -EACCES;
1962
1963 if (get_user(fsflags, (int __user *)arg))
1964 return -EFAULT;
1965
1966 if (fsflags & ~F2FS_GETTABLE_FS_FL)
1967 return -EOPNOTSUPP;
1968 fsflags &= F2FS_SETTABLE_FS_FL;
1969
1970 iflags = f2fs_fsflags_to_iflags(fsflags);
1971 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
1972 return -EOPNOTSUPP;
1973
1974 ret = mnt_want_write_file(filp);
1975 if (ret)
1976 return ret;
1977
1978 inode_lock(inode);
1979
1980 old_fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
1981 ret = vfs_ioc_setflags_prepare(inode, old_fsflags, fsflags);
1982 if (ret)
1983 goto out;
1984
1985 ret = f2fs_setflags_common(inode, iflags,
1986 f2fs_fsflags_to_iflags(F2FS_SETTABLE_FS_FL));
1987 out:
1988 inode_unlock(inode);
1989 mnt_drop_write_file(filp);
1990 return ret;
1991 }
1992
1993 static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
1994 {
1995 struct inode *inode = file_inode(filp);
1996
1997 return put_user(inode->i_generation, (int __user *)arg);
1998 }
1999
2000 static int f2fs_ioc_start_atomic_write(struct file *filp)
2001 {
2002 struct inode *inode = file_inode(filp);
2003 struct f2fs_inode_info *fi = F2FS_I(inode);
2004 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2005 int ret;
2006
2007 if (!inode_owner_or_capable(inode))
2008 return -EACCES;
2009
2010 if (!S_ISREG(inode->i_mode))
2011 return -EINVAL;
2012
2013 if (filp->f_flags & O_DIRECT)
2014 return -EINVAL;
2015
2016 ret = mnt_want_write_file(filp);
2017 if (ret)
2018 return ret;
2019
2020 inode_lock(inode);
2021
2022 f2fs_disable_compressed_file(inode);
2023
2024 if (f2fs_is_atomic_file(inode)) {
2025 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST))
2026 ret = -EINVAL;
2027 goto out;
2028 }
2029
2030 ret = f2fs_convert_inline_inode(inode);
2031 if (ret)
2032 goto out;
2033
2034 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
2035
2036 /*
2037 * Should wait end_io to count F2FS_WB_CP_DATA correctly by
2038 * f2fs_is_atomic_file.
2039 */
2040 if (get_dirty_pages(inode))
2041 f2fs_warn(F2FS_I_SB(inode), "Unexpected flush for atomic writes: ino=%lu, npages=%u",
2042 inode->i_ino, get_dirty_pages(inode));
2043 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
2044 if (ret) {
2045 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
2046 goto out;
2047 }
2048
2049 spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
2050 if (list_empty(&fi->inmem_ilist))
2051 list_add_tail(&fi->inmem_ilist, &sbi->inode_list[ATOMIC_FILE]);
2052 sbi->atomic_files++;
2053 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
2054
2055 /* add inode in inmem_list first and set atomic_file */
2056 set_inode_flag(inode, FI_ATOMIC_FILE);
2057 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2058 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
2059
2060 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2061 F2FS_I(inode)->inmem_task = current;
2062 stat_update_max_atomic_write(inode);
2063 out:
2064 inode_unlock(inode);
2065 mnt_drop_write_file(filp);
2066 return ret;
2067 }
2068
2069 static int f2fs_ioc_commit_atomic_write(struct file *filp)
2070 {
2071 struct inode *inode = file_inode(filp);
2072 int ret;
2073
2074 if (!inode_owner_or_capable(inode))
2075 return -EACCES;
2076
2077 ret = mnt_want_write_file(filp);
2078 if (ret)
2079 return ret;
2080
2081 f2fs_balance_fs(F2FS_I_SB(inode), true);
2082
2083 inode_lock(inode);
2084
2085 if (f2fs_is_volatile_file(inode)) {
2086 ret = -EINVAL;
2087 goto err_out;
2088 }
2089
2090 if (f2fs_is_atomic_file(inode)) {
2091 ret = f2fs_commit_inmem_pages(inode);
2092 if (ret)
2093 goto err_out;
2094
2095 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
2096 if (!ret)
2097 f2fs_drop_inmem_pages(inode);
2098 } else {
2099 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false);
2100 }
2101 err_out:
2102 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) {
2103 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2104 ret = -EINVAL;
2105 }
2106 inode_unlock(inode);
2107 mnt_drop_write_file(filp);
2108 return ret;
2109 }
2110
2111 static int f2fs_ioc_start_volatile_write(struct file *filp)
2112 {
2113 struct inode *inode = file_inode(filp);
2114 int ret;
2115
2116 if (!inode_owner_or_capable(inode))
2117 return -EACCES;
2118
2119 if (!S_ISREG(inode->i_mode))
2120 return -EINVAL;
2121
2122 ret = mnt_want_write_file(filp);
2123 if (ret)
2124 return ret;
2125
2126 inode_lock(inode);
2127
2128 if (f2fs_is_volatile_file(inode))
2129 goto out;
2130
2131 ret = f2fs_convert_inline_inode(inode);
2132 if (ret)
2133 goto out;
2134
2135 stat_inc_volatile_write(inode);
2136 stat_update_max_volatile_write(inode);
2137
2138 set_inode_flag(inode, FI_VOLATILE_FILE);
2139 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2140 out:
2141 inode_unlock(inode);
2142 mnt_drop_write_file(filp);
2143 return ret;
2144 }
2145
2146 static int f2fs_ioc_release_volatile_write(struct file *filp)
2147 {
2148 struct inode *inode = file_inode(filp);
2149 int ret;
2150
2151 if (!inode_owner_or_capable(inode))
2152 return -EACCES;
2153
2154 ret = mnt_want_write_file(filp);
2155 if (ret)
2156 return ret;
2157
2158 inode_lock(inode);
2159
2160 if (!f2fs_is_volatile_file(inode))
2161 goto out;
2162
2163 if (!f2fs_is_first_block_written(inode)) {
2164 ret = truncate_partial_data_page(inode, 0, true);
2165 goto out;
2166 }
2167
2168 ret = punch_hole(inode, 0, F2FS_BLKSIZE);
2169 out:
2170 inode_unlock(inode);
2171 mnt_drop_write_file(filp);
2172 return ret;
2173 }
2174
2175 static int f2fs_ioc_abort_volatile_write(struct file *filp)
2176 {
2177 struct inode *inode = file_inode(filp);
2178 int ret;
2179
2180 if (!inode_owner_or_capable(inode))
2181 return -EACCES;
2182
2183 ret = mnt_want_write_file(filp);
2184 if (ret)
2185 return ret;
2186
2187 inode_lock(inode);
2188
2189 if (f2fs_is_atomic_file(inode))
2190 f2fs_drop_inmem_pages(inode);
2191 if (f2fs_is_volatile_file(inode)) {
2192 clear_inode_flag(inode, FI_VOLATILE_FILE);
2193 stat_dec_volatile_write(inode);
2194 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
2195 }
2196
2197 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2198
2199 inode_unlock(inode);
2200
2201 mnt_drop_write_file(filp);
2202 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2203 return ret;
2204 }
2205
2206 static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
2207 {
2208 struct inode *inode = file_inode(filp);
2209 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2210 struct super_block *sb = sbi->sb;
2211 __u32 in;
2212 int ret = 0;
2213
2214 if (!capable(CAP_SYS_ADMIN))
2215 return -EPERM;
2216
2217 if (get_user(in, (__u32 __user *)arg))
2218 return -EFAULT;
2219
2220 if (in != F2FS_GOING_DOWN_FULLSYNC) {
2221 ret = mnt_want_write_file(filp);
2222 if (ret)
2223 return ret;
2224 }
2225
2226 switch (in) {
2227 case F2FS_GOING_DOWN_FULLSYNC:
2228 sb = freeze_bdev(sb->s_bdev);
2229 if (IS_ERR(sb)) {
2230 ret = PTR_ERR(sb);
2231 goto out;
2232 }
2233 if (sb) {
2234 f2fs_stop_checkpoint(sbi, false);
2235 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2236 thaw_bdev(sb->s_bdev, sb);
2237 }
2238 break;
2239 case F2FS_GOING_DOWN_METASYNC:
2240 /* do checkpoint only */
2241 ret = f2fs_sync_fs(sb, 1);
2242 if (ret)
2243 goto out;
2244 f2fs_stop_checkpoint(sbi, false);
2245 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2246 break;
2247 case F2FS_GOING_DOWN_NOSYNC:
2248 f2fs_stop_checkpoint(sbi, false);
2249 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2250 break;
2251 case F2FS_GOING_DOWN_METAFLUSH:
2252 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
2253 f2fs_stop_checkpoint(sbi, false);
2254 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2255 break;
2256 case F2FS_GOING_DOWN_NEED_FSCK:
2257 set_sbi_flag(sbi, SBI_NEED_FSCK);
2258 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
2259 set_sbi_flag(sbi, SBI_IS_DIRTY);
2260 /* do checkpoint only */
2261 ret = f2fs_sync_fs(sb, 1);
2262 goto out;
2263 default:
2264 ret = -EINVAL;
2265 goto out;
2266 }
2267
2268 f2fs_stop_gc_thread(sbi);
2269 f2fs_stop_discard_thread(sbi);
2270
2271 f2fs_drop_discard_cmd(sbi);
2272 clear_opt(sbi, DISCARD);
2273
2274 f2fs_update_time(sbi, REQ_TIME);
2275 out:
2276 if (in != F2FS_GOING_DOWN_FULLSYNC)
2277 mnt_drop_write_file(filp);
2278
2279 trace_f2fs_shutdown(sbi, in, ret);
2280
2281 return ret;
2282 }
2283
2284 static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
2285 {
2286 struct inode *inode = file_inode(filp);
2287 struct super_block *sb = inode->i_sb;
2288 struct request_queue *q = bdev_get_queue(sb->s_bdev);
2289 struct fstrim_range range;
2290 int ret;
2291
2292 if (!capable(CAP_SYS_ADMIN))
2293 return -EPERM;
2294
2295 if (!f2fs_hw_support_discard(F2FS_SB(sb)))
2296 return -EOPNOTSUPP;
2297
2298 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
2299 sizeof(range)))
2300 return -EFAULT;
2301
2302 ret = mnt_want_write_file(filp);
2303 if (ret)
2304 return ret;
2305
2306 range.minlen = max((unsigned int)range.minlen,
2307 q->limits.discard_granularity);
2308 ret = f2fs_trim_fs(F2FS_SB(sb), &range);
2309 mnt_drop_write_file(filp);
2310 if (ret < 0)
2311 return ret;
2312
2313 if (copy_to_user((struct fstrim_range __user *)arg, &range,
2314 sizeof(range)))
2315 return -EFAULT;
2316 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2317 return 0;
2318 }
2319
2320 static bool uuid_is_nonzero(__u8 u[16])
2321 {
2322 int i;
2323
2324 for (i = 0; i < 16; i++)
2325 if (u[i])
2326 return true;
2327 return false;
2328 }
2329
2330 static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
2331 {
2332 struct inode *inode = file_inode(filp);
2333
2334 if (!f2fs_sb_has_encrypt(F2FS_I_SB(inode)))
2335 return -EOPNOTSUPP;
2336
2337 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2338
2339 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
2340 }
2341
2342 static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
2343 {
2344 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2345 return -EOPNOTSUPP;
2346 return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
2347 }
2348
2349 static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
2350 {
2351 struct inode *inode = file_inode(filp);
2352 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2353 int err;
2354
2355 if (!f2fs_sb_has_encrypt(sbi))
2356 return -EOPNOTSUPP;
2357
2358 err = mnt_want_write_file(filp);
2359 if (err)
2360 return err;
2361
2362 down_write(&sbi->sb_lock);
2363
2364 if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
2365 goto got_it;
2366
2367 /* update superblock with uuid */
2368 generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
2369
2370 err = f2fs_commit_super(sbi, false);
2371 if (err) {
2372 /* undo new data */
2373 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
2374 goto out_err;
2375 }
2376 got_it:
2377 if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt,
2378 16))
2379 err = -EFAULT;
2380 out_err:
2381 up_write(&sbi->sb_lock);
2382 mnt_drop_write_file(filp);
2383 return err;
2384 }
2385
2386 static int f2fs_ioc_get_encryption_policy_ex(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_policy_ex(filp, (void __user *)arg);
2393 }
2394
2395 static int f2fs_ioc_add_encryption_key(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_add_key(filp, (void __user *)arg);
2401 }
2402
2403 static int f2fs_ioc_remove_encryption_key(struct file *filp, unsigned long arg)
2404 {
2405 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2406 return -EOPNOTSUPP;
2407
2408 return fscrypt_ioctl_remove_key(filp, (void __user *)arg);
2409 }
2410
2411 static int f2fs_ioc_remove_encryption_key_all_users(struct file *filp,
2412 unsigned long arg)
2413 {
2414 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2415 return -EOPNOTSUPP;
2416
2417 return fscrypt_ioctl_remove_key_all_users(filp, (void __user *)arg);
2418 }
2419
2420 static int f2fs_ioc_get_encryption_key_status(struct file *filp,
2421 unsigned long arg)
2422 {
2423 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2424 return -EOPNOTSUPP;
2425
2426 return fscrypt_ioctl_get_key_status(filp, (void __user *)arg);
2427 }
2428
2429 static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
2430 {
2431 struct inode *inode = file_inode(filp);
2432 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2433 __u32 sync;
2434 int ret;
2435
2436 if (!capable(CAP_SYS_ADMIN))
2437 return -EPERM;
2438
2439 if (get_user(sync, (__u32 __user *)arg))
2440 return -EFAULT;
2441
2442 if (f2fs_readonly(sbi->sb))
2443 return -EROFS;
2444
2445 ret = mnt_want_write_file(filp);
2446 if (ret)
2447 return ret;
2448
2449 if (!sync) {
2450 if (!down_write_trylock(&sbi->gc_lock)) {
2451 ret = -EBUSY;
2452 goto out;
2453 }
2454 } else {
2455 down_write(&sbi->gc_lock);
2456 }
2457
2458 ret = f2fs_gc(sbi, sync, true, NULL_SEGNO);
2459 out:
2460 mnt_drop_write_file(filp);
2461 return ret;
2462 }
2463
2464 static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
2465 {
2466 struct inode *inode = file_inode(filp);
2467 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2468 struct f2fs_gc_range range;
2469 u64 end;
2470 int ret;
2471
2472 if (!capable(CAP_SYS_ADMIN))
2473 return -EPERM;
2474
2475 if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
2476 sizeof(range)))
2477 return -EFAULT;
2478
2479 if (f2fs_readonly(sbi->sb))
2480 return -EROFS;
2481
2482 end = range.start + range.len;
2483 if (end < range.start || range.start < MAIN_BLKADDR(sbi) ||
2484 end >= MAX_BLKADDR(sbi))
2485 return -EINVAL;
2486
2487 ret = mnt_want_write_file(filp);
2488 if (ret)
2489 return ret;
2490
2491 do_more:
2492 if (!range.sync) {
2493 if (!down_write_trylock(&sbi->gc_lock)) {
2494 ret = -EBUSY;
2495 goto out;
2496 }
2497 } else {
2498 down_write(&sbi->gc_lock);
2499 }
2500
2501 ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start));
2502 range.start += BLKS_PER_SEC(sbi);
2503 if (range.start <= end)
2504 goto do_more;
2505 out:
2506 mnt_drop_write_file(filp);
2507 return ret;
2508 }
2509
2510 static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
2511 {
2512 struct inode *inode = file_inode(filp);
2513 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2514 int ret;
2515
2516 if (!capable(CAP_SYS_ADMIN))
2517 return -EPERM;
2518
2519 if (f2fs_readonly(sbi->sb))
2520 return -EROFS;
2521
2522 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
2523 f2fs_info(sbi, "Skipping Checkpoint. Checkpoints currently disabled.");
2524 return -EINVAL;
2525 }
2526
2527 ret = mnt_want_write_file(filp);
2528 if (ret)
2529 return ret;
2530
2531 ret = f2fs_sync_fs(sbi->sb, 1);
2532
2533 mnt_drop_write_file(filp);
2534 return ret;
2535 }
2536
2537 static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
2538 struct file *filp,
2539 struct f2fs_defragment *range)
2540 {
2541 struct inode *inode = file_inode(filp);
2542 struct f2fs_map_blocks map = { .m_next_extent = NULL,
2543 .m_seg_type = NO_CHECK_TYPE ,
2544 .m_may_create = false };
2545 struct extent_info ei = {0, 0, 0};
2546 pgoff_t pg_start, pg_end, next_pgofs;
2547 unsigned int blk_per_seg = sbi->blocks_per_seg;
2548 unsigned int total = 0, sec_num;
2549 block_t blk_end = 0;
2550 bool fragmented = false;
2551 int err;
2552
2553 /* if in-place-update policy is enabled, don't waste time here */
2554 if (f2fs_should_update_inplace(inode, NULL))
2555 return -EINVAL;
2556
2557 pg_start = range->start >> PAGE_SHIFT;
2558 pg_end = (range->start + range->len) >> PAGE_SHIFT;
2559
2560 f2fs_balance_fs(sbi, true);
2561
2562 inode_lock(inode);
2563
2564 /* writeback all dirty pages in the range */
2565 err = filemap_write_and_wait_range(inode->i_mapping, range->start,
2566 range->start + range->len - 1);
2567 if (err)
2568 goto out;
2569
2570 /*
2571 * lookup mapping info in extent cache, skip defragmenting if physical
2572 * block addresses are continuous.
2573 */
2574 if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) {
2575 if (ei.fofs + ei.len >= pg_end)
2576 goto out;
2577 }
2578
2579 map.m_lblk = pg_start;
2580 map.m_next_pgofs = &next_pgofs;
2581
2582 /*
2583 * lookup mapping info in dnode page cache, skip defragmenting if all
2584 * physical block addresses are continuous even if there are hole(s)
2585 * in logical blocks.
2586 */
2587 while (map.m_lblk < pg_end) {
2588 map.m_len = pg_end - map.m_lblk;
2589 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
2590 if (err)
2591 goto out;
2592
2593 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
2594 map.m_lblk = next_pgofs;
2595 continue;
2596 }
2597
2598 if (blk_end && blk_end != map.m_pblk)
2599 fragmented = true;
2600
2601 /* record total count of block that we're going to move */
2602 total += map.m_len;
2603
2604 blk_end = map.m_pblk + map.m_len;
2605
2606 map.m_lblk += map.m_len;
2607 }
2608
2609 if (!fragmented) {
2610 total = 0;
2611 goto out;
2612 }
2613
2614 sec_num = DIV_ROUND_UP(total, BLKS_PER_SEC(sbi));
2615
2616 /*
2617 * make sure there are enough free section for LFS allocation, this can
2618 * avoid defragment running in SSR mode when free section are allocated
2619 * intensively
2620 */
2621 if (has_not_enough_free_secs(sbi, 0, sec_num)) {
2622 err = -EAGAIN;
2623 goto out;
2624 }
2625
2626 map.m_lblk = pg_start;
2627 map.m_len = pg_end - pg_start;
2628 total = 0;
2629
2630 while (map.m_lblk < pg_end) {
2631 pgoff_t idx;
2632 int cnt = 0;
2633
2634 do_map:
2635 map.m_len = pg_end - map.m_lblk;
2636 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
2637 if (err)
2638 goto clear_out;
2639
2640 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
2641 map.m_lblk = next_pgofs;
2642 goto check;
2643 }
2644
2645 set_inode_flag(inode, FI_DO_DEFRAG);
2646
2647 idx = map.m_lblk;
2648 while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) {
2649 struct page *page;
2650
2651 page = f2fs_get_lock_data_page(inode, idx, true);
2652 if (IS_ERR(page)) {
2653 err = PTR_ERR(page);
2654 goto clear_out;
2655 }
2656
2657 set_page_dirty(page);
2658 f2fs_put_page(page, 1);
2659
2660 idx++;
2661 cnt++;
2662 total++;
2663 }
2664
2665 map.m_lblk = idx;
2666 check:
2667 if (map.m_lblk < pg_end && cnt < blk_per_seg)
2668 goto do_map;
2669
2670 clear_inode_flag(inode, FI_DO_DEFRAG);
2671
2672 err = filemap_fdatawrite(inode->i_mapping);
2673 if (err)
2674 goto out;
2675 }
2676 clear_out:
2677 clear_inode_flag(inode, FI_DO_DEFRAG);
2678 out:
2679 inode_unlock(inode);
2680 if (!err)
2681 range->len = (u64)total << PAGE_SHIFT;
2682 return err;
2683 }
2684
2685 static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
2686 {
2687 struct inode *inode = file_inode(filp);
2688 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2689 struct f2fs_defragment range;
2690 int err;
2691
2692 if (!capable(CAP_SYS_ADMIN))
2693 return -EPERM;
2694
2695 if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode))
2696 return -EINVAL;
2697
2698 if (f2fs_readonly(sbi->sb))
2699 return -EROFS;
2700
2701 if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
2702 sizeof(range)))
2703 return -EFAULT;
2704
2705 /* verify alignment of offset & size */
2706 if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1))
2707 return -EINVAL;
2708
2709 if (unlikely((range.start + range.len) >> PAGE_SHIFT >
2710 sbi->max_file_blocks))
2711 return -EINVAL;
2712
2713 err = mnt_want_write_file(filp);
2714 if (err)
2715 return err;
2716
2717 err = f2fs_defragment_range(sbi, filp, &range);
2718 mnt_drop_write_file(filp);
2719
2720 f2fs_update_time(sbi, REQ_TIME);
2721 if (err < 0)
2722 return err;
2723
2724 if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
2725 sizeof(range)))
2726 return -EFAULT;
2727
2728 return 0;
2729 }
2730
2731 static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
2732 struct file *file_out, loff_t pos_out, size_t len)
2733 {
2734 struct inode *src = file_inode(file_in);
2735 struct inode *dst = file_inode(file_out);
2736 struct f2fs_sb_info *sbi = F2FS_I_SB(src);
2737 size_t olen = len, dst_max_i_size = 0;
2738 size_t dst_osize;
2739 int ret;
2740
2741 if (file_in->f_path.mnt != file_out->f_path.mnt ||
2742 src->i_sb != dst->i_sb)
2743 return -EXDEV;
2744
2745 if (unlikely(f2fs_readonly(src->i_sb)))
2746 return -EROFS;
2747
2748 if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
2749 return -EINVAL;
2750
2751 if (IS_ENCRYPTED(src) || IS_ENCRYPTED(dst))
2752 return -EOPNOTSUPP;
2753
2754 if (src == dst) {
2755 if (pos_in == pos_out)
2756 return 0;
2757 if (pos_out > pos_in && pos_out < pos_in + len)
2758 return -EINVAL;
2759 }
2760
2761 inode_lock(src);
2762 if (src != dst) {
2763 ret = -EBUSY;
2764 if (!inode_trylock(dst))
2765 goto out;
2766 }
2767
2768 ret = -EINVAL;
2769 if (pos_in + len > src->i_size || pos_in + len < pos_in)
2770 goto out_unlock;
2771 if (len == 0)
2772 olen = len = src->i_size - pos_in;
2773 if (pos_in + len == src->i_size)
2774 len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in;
2775 if (len == 0) {
2776 ret = 0;
2777 goto out_unlock;
2778 }
2779
2780 dst_osize = dst->i_size;
2781 if (pos_out + olen > dst->i_size)
2782 dst_max_i_size = pos_out + olen;
2783
2784 /* verify the end result is block aligned */
2785 if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) ||
2786 !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) ||
2787 !IS_ALIGNED(pos_out, F2FS_BLKSIZE))
2788 goto out_unlock;
2789
2790 ret = f2fs_convert_inline_inode(src);
2791 if (ret)
2792 goto out_unlock;
2793
2794 ret = f2fs_convert_inline_inode(dst);
2795 if (ret)
2796 goto out_unlock;
2797
2798 /* write out all dirty pages from offset */
2799 ret = filemap_write_and_wait_range(src->i_mapping,
2800 pos_in, pos_in + len);
2801 if (ret)
2802 goto out_unlock;
2803
2804 ret = filemap_write_and_wait_range(dst->i_mapping,
2805 pos_out, pos_out + len);
2806 if (ret)
2807 goto out_unlock;
2808
2809 f2fs_balance_fs(sbi, true);
2810
2811 down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2812 if (src != dst) {
2813 ret = -EBUSY;
2814 if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE]))
2815 goto out_src;
2816 }
2817
2818 f2fs_lock_op(sbi);
2819 ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
2820 pos_out >> F2FS_BLKSIZE_BITS,
2821 len >> F2FS_BLKSIZE_BITS, false);
2822
2823 if (!ret) {
2824 if (dst_max_i_size)
2825 f2fs_i_size_write(dst, dst_max_i_size);
2826 else if (dst_osize != dst->i_size)
2827 f2fs_i_size_write(dst, dst_osize);
2828 }
2829 f2fs_unlock_op(sbi);
2830
2831 if (src != dst)
2832 up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]);
2833 out_src:
2834 up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2835 out_unlock:
2836 if (src != dst)
2837 inode_unlock(dst);
2838 out:
2839 inode_unlock(src);
2840 return ret;
2841 }
2842
2843 static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
2844 {
2845 struct f2fs_move_range range;
2846 struct fd dst;
2847 int err;
2848
2849 if (!(filp->f_mode & FMODE_READ) ||
2850 !(filp->f_mode & FMODE_WRITE))
2851 return -EBADF;
2852
2853 if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
2854 sizeof(range)))
2855 return -EFAULT;
2856
2857 dst = fdget(range.dst_fd);
2858 if (!dst.file)
2859 return -EBADF;
2860
2861 if (!(dst.file->f_mode & FMODE_WRITE)) {
2862 err = -EBADF;
2863 goto err_out;
2864 }
2865
2866 err = mnt_want_write_file(filp);
2867 if (err)
2868 goto err_out;
2869
2870 err = f2fs_move_file_range(filp, range.pos_in, dst.file,
2871 range.pos_out, range.len);
2872
2873 mnt_drop_write_file(filp);
2874 if (err)
2875 goto err_out;
2876
2877 if (copy_to_user((struct f2fs_move_range __user *)arg,
2878 &range, sizeof(range)))
2879 err = -EFAULT;
2880 err_out:
2881 fdput(dst);
2882 return err;
2883 }
2884
2885 static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
2886 {
2887 struct inode *inode = file_inode(filp);
2888 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2889 struct sit_info *sm = SIT_I(sbi);
2890 unsigned int start_segno = 0, end_segno = 0;
2891 unsigned int dev_start_segno = 0, dev_end_segno = 0;
2892 struct f2fs_flush_device range;
2893 int ret;
2894
2895 if (!capable(CAP_SYS_ADMIN))
2896 return -EPERM;
2897
2898 if (f2fs_readonly(sbi->sb))
2899 return -EROFS;
2900
2901 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2902 return -EINVAL;
2903
2904 if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg,
2905 sizeof(range)))
2906 return -EFAULT;
2907
2908 if (!f2fs_is_multi_device(sbi) || sbi->s_ndevs - 1 <= range.dev_num ||
2909 __is_large_section(sbi)) {
2910 f2fs_warn(sbi, "Can't flush %u in %d for segs_per_sec %u != 1",
2911 range.dev_num, sbi->s_ndevs, sbi->segs_per_sec);
2912 return -EINVAL;
2913 }
2914
2915 ret = mnt_want_write_file(filp);
2916 if (ret)
2917 return ret;
2918
2919 if (range.dev_num != 0)
2920 dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk);
2921 dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk);
2922
2923 start_segno = sm->last_victim[FLUSH_DEVICE];
2924 if (start_segno < dev_start_segno || start_segno >= dev_end_segno)
2925 start_segno = dev_start_segno;
2926 end_segno = min(start_segno + range.segments, dev_end_segno);
2927
2928 while (start_segno < end_segno) {
2929 if (!down_write_trylock(&sbi->gc_lock)) {
2930 ret = -EBUSY;
2931 goto out;
2932 }
2933 sm->last_victim[GC_CB] = end_segno + 1;
2934 sm->last_victim[GC_GREEDY] = end_segno + 1;
2935 sm->last_victim[ALLOC_NEXT] = end_segno + 1;
2936 ret = f2fs_gc(sbi, true, true, start_segno);
2937 if (ret == -EAGAIN)
2938 ret = 0;
2939 else if (ret < 0)
2940 break;
2941 start_segno++;
2942 }
2943 out:
2944 mnt_drop_write_file(filp);
2945 return ret;
2946 }
2947
2948 static int f2fs_ioc_get_features(struct file *filp, unsigned long arg)
2949 {
2950 struct inode *inode = file_inode(filp);
2951 u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature);
2952
2953 /* Must validate to set it with SQLite behavior in Android. */
2954 sb_feature |= F2FS_FEATURE_ATOMIC_WRITE;
2955
2956 return put_user(sb_feature, (u32 __user *)arg);
2957 }
2958
2959 #ifdef CONFIG_QUOTA
2960 int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
2961 {
2962 struct dquot *transfer_to[MAXQUOTAS] = {};
2963 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2964 struct super_block *sb = sbi->sb;
2965 int err = 0;
2966
2967 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
2968 if (!IS_ERR(transfer_to[PRJQUOTA])) {
2969 err = __dquot_transfer(inode, transfer_to);
2970 if (err)
2971 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2972 dqput(transfer_to[PRJQUOTA]);
2973 }
2974 return err;
2975 }
2976
2977 static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
2978 {
2979 struct inode *inode = file_inode(filp);
2980 struct f2fs_inode_info *fi = F2FS_I(inode);
2981 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2982 struct page *ipage;
2983 kprojid_t kprojid;
2984 int err;
2985
2986 if (!f2fs_sb_has_project_quota(sbi)) {
2987 if (projid != F2FS_DEF_PROJID)
2988 return -EOPNOTSUPP;
2989 else
2990 return 0;
2991 }
2992
2993 if (!f2fs_has_extra_attr(inode))
2994 return -EOPNOTSUPP;
2995
2996 kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
2997
2998 if (projid_eq(kprojid, F2FS_I(inode)->i_projid))
2999 return 0;
3000
3001 err = -EPERM;
3002 /* Is it quota file? Do not allow user to mess with it */
3003 if (IS_NOQUOTA(inode))
3004 return err;
3005
3006 ipage = f2fs_get_node_page(sbi, inode->i_ino);
3007 if (IS_ERR(ipage))
3008 return PTR_ERR(ipage);
3009
3010 if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize,
3011 i_projid)) {
3012 err = -EOVERFLOW;
3013 f2fs_put_page(ipage, 1);
3014 return err;
3015 }
3016 f2fs_put_page(ipage, 1);
3017
3018 err = dquot_initialize(inode);
3019 if (err)
3020 return err;
3021
3022 f2fs_lock_op(sbi);
3023 err = f2fs_transfer_project_quota(inode, kprojid);
3024 if (err)
3025 goto out_unlock;
3026
3027 F2FS_I(inode)->i_projid = kprojid;
3028 inode->i_ctime = current_time(inode);
3029 f2fs_mark_inode_dirty_sync(inode, true);
3030 out_unlock:
3031 f2fs_unlock_op(sbi);
3032 return err;
3033 }
3034 #else
3035 int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
3036 {
3037 return 0;
3038 }
3039
3040 static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
3041 {
3042 if (projid != F2FS_DEF_PROJID)
3043 return -EOPNOTSUPP;
3044 return 0;
3045 }
3046 #endif
3047
3048 /* FS_IOC_FSGETXATTR and FS_IOC_FSSETXATTR support */
3049
3050 /*
3051 * To make a new on-disk f2fs i_flag gettable via FS_IOC_FSGETXATTR and settable
3052 * via FS_IOC_FSSETXATTR, add an entry for it to f2fs_xflags_map[], and add its
3053 * FS_XFLAG_* equivalent to F2FS_SUPPORTED_XFLAGS.
3054 */
3055
3056 static const struct {
3057 u32 iflag;
3058 u32 xflag;
3059 } f2fs_xflags_map[] = {
3060 { F2FS_SYNC_FL, FS_XFLAG_SYNC },
3061 { F2FS_IMMUTABLE_FL, FS_XFLAG_IMMUTABLE },
3062 { F2FS_APPEND_FL, FS_XFLAG_APPEND },
3063 { F2FS_NODUMP_FL, FS_XFLAG_NODUMP },
3064 { F2FS_NOATIME_FL, FS_XFLAG_NOATIME },
3065 { F2FS_PROJINHERIT_FL, FS_XFLAG_PROJINHERIT },
3066 };
3067
3068 #define F2FS_SUPPORTED_XFLAGS ( \
3069 FS_XFLAG_SYNC | \
3070 FS_XFLAG_IMMUTABLE | \
3071 FS_XFLAG_APPEND | \
3072 FS_XFLAG_NODUMP | \
3073 FS_XFLAG_NOATIME | \
3074 FS_XFLAG_PROJINHERIT)
3075
3076 /* Convert f2fs on-disk i_flags to FS_IOC_FS{GET,SET}XATTR flags */
3077 static inline u32 f2fs_iflags_to_xflags(u32 iflags)
3078 {
3079 u32 xflags = 0;
3080 int i;
3081
3082 for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++)
3083 if (iflags & f2fs_xflags_map[i].iflag)
3084 xflags |= f2fs_xflags_map[i].xflag;
3085
3086 return xflags;
3087 }
3088
3089 /* Convert FS_IOC_FS{GET,SET}XATTR flags to f2fs on-disk i_flags */
3090 static inline u32 f2fs_xflags_to_iflags(u32 xflags)
3091 {
3092 u32 iflags = 0;
3093 int i;
3094
3095 for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++)
3096 if (xflags & f2fs_xflags_map[i].xflag)
3097 iflags |= f2fs_xflags_map[i].iflag;
3098
3099 return iflags;
3100 }
3101
3102 static void f2fs_fill_fsxattr(struct inode *inode, struct fsxattr *fa)
3103 {
3104 struct f2fs_inode_info *fi = F2FS_I(inode);
3105
3106 simple_fill_fsxattr(fa, f2fs_iflags_to_xflags(fi->i_flags));
3107
3108 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)))
3109 fa->fsx_projid = from_kprojid(&init_user_ns, fi->i_projid);
3110 }
3111
3112 static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg)
3113 {
3114 struct inode *inode = file_inode(filp);
3115 struct fsxattr fa;
3116
3117 f2fs_fill_fsxattr(inode, &fa);
3118
3119 if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa)))
3120 return -EFAULT;
3121 return 0;
3122 }
3123
3124 static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg)
3125 {
3126 struct inode *inode = file_inode(filp);
3127 struct fsxattr fa, old_fa;
3128 u32 iflags;
3129 int err;
3130
3131 if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa)))
3132 return -EFAULT;
3133
3134 /* Make sure caller has proper permission */
3135 if (!inode_owner_or_capable(inode))
3136 return -EACCES;
3137
3138 if (fa.fsx_xflags & ~F2FS_SUPPORTED_XFLAGS)
3139 return -EOPNOTSUPP;
3140
3141 iflags = f2fs_xflags_to_iflags(fa.fsx_xflags);
3142 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
3143 return -EOPNOTSUPP;
3144
3145 err = mnt_want_write_file(filp);
3146 if (err)
3147 return err;
3148
3149 inode_lock(inode);
3150
3151 f2fs_fill_fsxattr(inode, &old_fa);
3152 err = vfs_ioc_fssetxattr_check(inode, &old_fa, &fa);
3153 if (err)
3154 goto out;
3155
3156 err = f2fs_setflags_common(inode, iflags,
3157 f2fs_xflags_to_iflags(F2FS_SUPPORTED_XFLAGS));
3158 if (err)
3159 goto out;
3160
3161 err = f2fs_ioc_setproject(filp, fa.fsx_projid);
3162 out:
3163 inode_unlock(inode);
3164 mnt_drop_write_file(filp);
3165 return err;
3166 }
3167
3168 int f2fs_pin_file_control(struct inode *inode, bool inc)
3169 {
3170 struct f2fs_inode_info *fi = F2FS_I(inode);
3171 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3172
3173 /* Use i_gc_failures for normal file as a risk signal. */
3174 if (inc)
3175 f2fs_i_gc_failures_write(inode,
3176 fi->i_gc_failures[GC_FAILURE_PIN] + 1);
3177
3178 if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) {
3179 f2fs_warn(sbi, "%s: Enable GC = ino %lx after %x GC trials",
3180 __func__, inode->i_ino,
3181 fi->i_gc_failures[GC_FAILURE_PIN]);
3182 clear_inode_flag(inode, FI_PIN_FILE);
3183 return -EAGAIN;
3184 }
3185 return 0;
3186 }
3187
3188 static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
3189 {
3190 struct inode *inode = file_inode(filp);
3191 __u32 pin;
3192 int ret = 0;
3193
3194 if (get_user(pin, (__u32 __user *)arg))
3195 return -EFAULT;
3196
3197 if (!S_ISREG(inode->i_mode))
3198 return -EINVAL;
3199
3200 if (f2fs_readonly(F2FS_I_SB(inode)->sb))
3201 return -EROFS;
3202
3203 ret = mnt_want_write_file(filp);
3204 if (ret)
3205 return ret;
3206
3207 inode_lock(inode);
3208
3209 if (f2fs_should_update_outplace(inode, NULL)) {
3210 ret = -EINVAL;
3211 goto out;
3212 }
3213
3214 if (!pin) {
3215 clear_inode_flag(inode, FI_PIN_FILE);
3216 f2fs_i_gc_failures_write(inode, 0);
3217 goto done;
3218 }
3219
3220 if (f2fs_pin_file_control(inode, false)) {
3221 ret = -EAGAIN;
3222 goto out;
3223 }
3224
3225 ret = f2fs_convert_inline_inode(inode);
3226 if (ret)
3227 goto out;
3228
3229 if (f2fs_disable_compressed_file(inode)) {
3230 ret = -EOPNOTSUPP;
3231 goto out;
3232 }
3233
3234 set_inode_flag(inode, FI_PIN_FILE);
3235 ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
3236 done:
3237 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3238 out:
3239 inode_unlock(inode);
3240 mnt_drop_write_file(filp);
3241 return ret;
3242 }
3243
3244 static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg)
3245 {
3246 struct inode *inode = file_inode(filp);
3247 __u32 pin = 0;
3248
3249 if (is_inode_flag_set(inode, FI_PIN_FILE))
3250 pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
3251 return put_user(pin, (u32 __user *)arg);
3252 }
3253
3254 int f2fs_precache_extents(struct inode *inode)
3255 {
3256 struct f2fs_inode_info *fi = F2FS_I(inode);
3257 struct f2fs_map_blocks map;
3258 pgoff_t m_next_extent;
3259 loff_t end;
3260 int err;
3261
3262 if (is_inode_flag_set(inode, FI_NO_EXTENT))
3263 return -EOPNOTSUPP;
3264
3265 map.m_lblk = 0;
3266 map.m_next_pgofs = NULL;
3267 map.m_next_extent = &m_next_extent;
3268 map.m_seg_type = NO_CHECK_TYPE;
3269 map.m_may_create = false;
3270 end = F2FS_I_SB(inode)->max_file_blocks;
3271
3272 while (map.m_lblk < end) {
3273 map.m_len = end - map.m_lblk;
3274
3275 down_write(&fi->i_gc_rwsem[WRITE]);
3276 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE);
3277 up_write(&fi->i_gc_rwsem[WRITE]);
3278 if (err)
3279 return err;
3280
3281 map.m_lblk = m_next_extent;
3282 }
3283
3284 return err;
3285 }
3286
3287 static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg)
3288 {
3289 return f2fs_precache_extents(file_inode(filp));
3290 }
3291
3292 static int f2fs_ioc_resize_fs(struct file *filp, unsigned long arg)
3293 {
3294 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
3295 __u64 block_count;
3296 int ret;
3297
3298 if (!capable(CAP_SYS_ADMIN))
3299 return -EPERM;
3300
3301 if (f2fs_readonly(sbi->sb))
3302 return -EROFS;
3303
3304 if (copy_from_user(&block_count, (void __user *)arg,
3305 sizeof(block_count)))
3306 return -EFAULT;
3307
3308 ret = f2fs_resize_fs(sbi, block_count);
3309
3310 return ret;
3311 }
3312
3313 static int f2fs_ioc_enable_verity(struct file *filp, unsigned long arg)
3314 {
3315 struct inode *inode = file_inode(filp);
3316
3317 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3318
3319 if (!f2fs_sb_has_verity(F2FS_I_SB(inode))) {
3320 f2fs_warn(F2FS_I_SB(inode),
3321 "Can't enable fs-verity on inode %lu: the verity feature is not enabled on this filesystem.\n",
3322 inode->i_ino);
3323 return -EOPNOTSUPP;
3324 }
3325
3326 return fsverity_ioctl_enable(filp, (const void __user *)arg);
3327 }
3328
3329 static int f2fs_ioc_measure_verity(struct file *filp, unsigned long arg)
3330 {
3331 if (!f2fs_sb_has_verity(F2FS_I_SB(file_inode(filp))))
3332 return -EOPNOTSUPP;
3333
3334 return fsverity_ioctl_measure(filp, (void __user *)arg);
3335 }
3336
3337 static int f2fs_get_volume_name(struct file *filp, unsigned long arg)
3338 {
3339 struct inode *inode = file_inode(filp);
3340 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3341 char *vbuf;
3342 int count;
3343 int err = 0;
3344
3345 vbuf = f2fs_kzalloc(sbi, MAX_VOLUME_NAME, GFP_KERNEL);
3346 if (!vbuf)
3347 return -ENOMEM;
3348
3349 down_read(&sbi->sb_lock);
3350 count = utf16s_to_utf8s(sbi->raw_super->volume_name,
3351 ARRAY_SIZE(sbi->raw_super->volume_name),
3352 UTF16_LITTLE_ENDIAN, vbuf, MAX_VOLUME_NAME);
3353 up_read(&sbi->sb_lock);
3354
3355 if (copy_to_user((char __user *)arg, vbuf,
3356 min(FSLABEL_MAX, count)))
3357 err = -EFAULT;
3358
3359 kvfree(vbuf);
3360 return err;
3361 }
3362
3363 static int f2fs_set_volume_name(struct file *filp, unsigned long arg)
3364 {
3365 struct inode *inode = file_inode(filp);
3366 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3367 char *vbuf;
3368 int err = 0;
3369
3370 if (!capable(CAP_SYS_ADMIN))
3371 return -EPERM;
3372
3373 vbuf = strndup_user((const char __user *)arg, FSLABEL_MAX);
3374 if (IS_ERR(vbuf))
3375 return PTR_ERR(vbuf);
3376
3377 err = mnt_want_write_file(filp);
3378 if (err)
3379 goto out;
3380
3381 down_write(&sbi->sb_lock);
3382
3383 memset(sbi->raw_super->volume_name, 0,
3384 sizeof(sbi->raw_super->volume_name));
3385 utf8s_to_utf16s(vbuf, strlen(vbuf), UTF16_LITTLE_ENDIAN,
3386 sbi->raw_super->volume_name,
3387 ARRAY_SIZE(sbi->raw_super->volume_name));
3388
3389 err = f2fs_commit_super(sbi, false);
3390
3391 up_write(&sbi->sb_lock);
3392
3393 mnt_drop_write_file(filp);
3394 out:
3395 kfree(vbuf);
3396 return err;
3397 }
3398
3399 long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
3400 {
3401 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
3402 return -EIO;
3403 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(filp))))
3404 return -ENOSPC;
3405
3406 switch (cmd) {
3407 case F2FS_IOC_GETFLAGS:
3408 return f2fs_ioc_getflags(filp, arg);
3409 case F2FS_IOC_SETFLAGS:
3410 return f2fs_ioc_setflags(filp, arg);
3411 case F2FS_IOC_GETVERSION:
3412 return f2fs_ioc_getversion(filp, arg);
3413 case F2FS_IOC_START_ATOMIC_WRITE:
3414 return f2fs_ioc_start_atomic_write(filp);
3415 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
3416 return f2fs_ioc_commit_atomic_write(filp);
3417 case F2FS_IOC_START_VOLATILE_WRITE:
3418 return f2fs_ioc_start_volatile_write(filp);
3419 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
3420 return f2fs_ioc_release_volatile_write(filp);
3421 case F2FS_IOC_ABORT_VOLATILE_WRITE:
3422 return f2fs_ioc_abort_volatile_write(filp);
3423 case F2FS_IOC_SHUTDOWN:
3424 return f2fs_ioc_shutdown(filp, arg);
3425 case FITRIM:
3426 return f2fs_ioc_fitrim(filp, arg);
3427 case F2FS_IOC_SET_ENCRYPTION_POLICY:
3428 return f2fs_ioc_set_encryption_policy(filp, arg);
3429 case F2FS_IOC_GET_ENCRYPTION_POLICY:
3430 return f2fs_ioc_get_encryption_policy(filp, arg);
3431 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
3432 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
3433 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
3434 return f2fs_ioc_get_encryption_policy_ex(filp, arg);
3435 case FS_IOC_ADD_ENCRYPTION_KEY:
3436 return f2fs_ioc_add_encryption_key(filp, arg);
3437 case FS_IOC_REMOVE_ENCRYPTION_KEY:
3438 return f2fs_ioc_remove_encryption_key(filp, arg);
3439 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
3440 return f2fs_ioc_remove_encryption_key_all_users(filp, arg);
3441 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
3442 return f2fs_ioc_get_encryption_key_status(filp, arg);
3443 case F2FS_IOC_GARBAGE_COLLECT:
3444 return f2fs_ioc_gc(filp, arg);
3445 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
3446 return f2fs_ioc_gc_range(filp, arg);
3447 case F2FS_IOC_WRITE_CHECKPOINT:
3448 return f2fs_ioc_write_checkpoint(filp, arg);
3449 case F2FS_IOC_DEFRAGMENT:
3450 return f2fs_ioc_defragment(filp, arg);
3451 case F2FS_IOC_MOVE_RANGE:
3452 return f2fs_ioc_move_range(filp, arg);
3453 case F2FS_IOC_FLUSH_DEVICE:
3454 return f2fs_ioc_flush_device(filp, arg);
3455 case F2FS_IOC_GET_FEATURES:
3456 return f2fs_ioc_get_features(filp, arg);
3457 case F2FS_IOC_FSGETXATTR:
3458 return f2fs_ioc_fsgetxattr(filp, arg);
3459 case F2FS_IOC_FSSETXATTR:
3460 return f2fs_ioc_fssetxattr(filp, arg);
3461 case F2FS_IOC_GET_PIN_FILE:
3462 return f2fs_ioc_get_pin_file(filp, arg);
3463 case F2FS_IOC_SET_PIN_FILE:
3464 return f2fs_ioc_set_pin_file(filp, arg);
3465 case F2FS_IOC_PRECACHE_EXTENTS:
3466 return f2fs_ioc_precache_extents(filp, arg);
3467 case F2FS_IOC_RESIZE_FS:
3468 return f2fs_ioc_resize_fs(filp, arg);
3469 case FS_IOC_ENABLE_VERITY:
3470 return f2fs_ioc_enable_verity(filp, arg);
3471 case FS_IOC_MEASURE_VERITY:
3472 return f2fs_ioc_measure_verity(filp, arg);
3473 case F2FS_IOC_GET_VOLUME_NAME:
3474 return f2fs_get_volume_name(filp, arg);
3475 case F2FS_IOC_SET_VOLUME_NAME:
3476 return f2fs_set_volume_name(filp, arg);
3477 default:
3478 return -ENOTTY;
3479 }
3480 }
3481
3482 static ssize_t f2fs_file_read_iter(struct kiocb *iocb, struct iov_iter *iter)
3483 {
3484 struct file *file = iocb->ki_filp;
3485 struct inode *inode = file_inode(file);
3486
3487 if (!f2fs_is_compress_backend_ready(inode))
3488 return -EOPNOTSUPP;
3489
3490 return generic_file_read_iter(iocb, iter);
3491 }
3492
3493 static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
3494 {
3495 struct file *file = iocb->ki_filp;
3496 struct inode *inode = file_inode(file);
3497 ssize_t ret;
3498
3499 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) {
3500 ret = -EIO;
3501 goto out;
3502 }
3503
3504 if (!f2fs_is_compress_backend_ready(inode))
3505 return -EOPNOTSUPP;
3506
3507 if (iocb->ki_flags & IOCB_NOWAIT) {
3508 if (!inode_trylock(inode)) {
3509 ret = -EAGAIN;
3510 goto out;
3511 }
3512 } else {
3513 inode_lock(inode);
3514 }
3515
3516 ret = generic_write_checks(iocb, from);
3517 if (ret > 0) {
3518 bool preallocated = false;
3519 size_t target_size = 0;
3520 int err;
3521
3522 if (iov_iter_fault_in_readable(from, iov_iter_count(from)))
3523 set_inode_flag(inode, FI_NO_PREALLOC);
3524
3525 if ((iocb->ki_flags & IOCB_NOWAIT)) {
3526 if (!f2fs_overwrite_io(inode, iocb->ki_pos,
3527 iov_iter_count(from)) ||
3528 f2fs_has_inline_data(inode) ||
3529 f2fs_force_buffered_io(inode, iocb, from)) {
3530 clear_inode_flag(inode, FI_NO_PREALLOC);
3531 inode_unlock(inode);
3532 ret = -EAGAIN;
3533 goto out;
3534 }
3535 goto write;
3536 }
3537
3538 if (is_inode_flag_set(inode, FI_NO_PREALLOC))
3539 goto write;
3540
3541 if (iocb->ki_flags & IOCB_DIRECT) {
3542 /*
3543 * Convert inline data for Direct I/O before entering
3544 * f2fs_direct_IO().
3545 */
3546 err = f2fs_convert_inline_inode(inode);
3547 if (err)
3548 goto out_err;
3549 /*
3550 * If force_buffere_io() is true, we have to allocate
3551 * blocks all the time, since f2fs_direct_IO will fall
3552 * back to buffered IO.
3553 */
3554 if (!f2fs_force_buffered_io(inode, iocb, from) &&
3555 allow_outplace_dio(inode, iocb, from))
3556 goto write;
3557 }
3558 preallocated = true;
3559 target_size = iocb->ki_pos + iov_iter_count(from);
3560
3561 err = f2fs_preallocate_blocks(iocb, from);
3562 if (err) {
3563 out_err:
3564 clear_inode_flag(inode, FI_NO_PREALLOC);
3565 inode_unlock(inode);
3566 ret = err;
3567 goto out;
3568 }
3569 write:
3570 ret = __generic_file_write_iter(iocb, from);
3571 clear_inode_flag(inode, FI_NO_PREALLOC);
3572
3573 /* if we couldn't write data, we should deallocate blocks. */
3574 if (preallocated && i_size_read(inode) < target_size)
3575 f2fs_truncate(inode);
3576
3577 if (ret > 0)
3578 f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret);
3579 }
3580 inode_unlock(inode);
3581 out:
3582 trace_f2fs_file_write_iter(inode, iocb->ki_pos,
3583 iov_iter_count(from), ret);
3584 if (ret > 0)
3585 ret = generic_write_sync(iocb, ret);
3586 return ret;
3587 }
3588
3589 #ifdef CONFIG_COMPAT
3590 long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
3591 {
3592 switch (cmd) {
3593 case F2FS_IOC32_GETFLAGS:
3594 cmd = F2FS_IOC_GETFLAGS;
3595 break;
3596 case F2FS_IOC32_SETFLAGS:
3597 cmd = F2FS_IOC_SETFLAGS;
3598 break;
3599 case F2FS_IOC32_GETVERSION:
3600 cmd = F2FS_IOC_GETVERSION;
3601 break;
3602 case F2FS_IOC_START_ATOMIC_WRITE:
3603 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
3604 case F2FS_IOC_START_VOLATILE_WRITE:
3605 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
3606 case F2FS_IOC_ABORT_VOLATILE_WRITE:
3607 case F2FS_IOC_SHUTDOWN:
3608 case FITRIM:
3609 case F2FS_IOC_SET_ENCRYPTION_POLICY:
3610 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
3611 case F2FS_IOC_GET_ENCRYPTION_POLICY:
3612 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
3613 case FS_IOC_ADD_ENCRYPTION_KEY:
3614 case FS_IOC_REMOVE_ENCRYPTION_KEY:
3615 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
3616 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
3617 case F2FS_IOC_GARBAGE_COLLECT:
3618 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
3619 case F2FS_IOC_WRITE_CHECKPOINT:
3620 case F2FS_IOC_DEFRAGMENT:
3621 case F2FS_IOC_MOVE_RANGE:
3622 case F2FS_IOC_FLUSH_DEVICE:
3623 case F2FS_IOC_GET_FEATURES:
3624 case F2FS_IOC_FSGETXATTR:
3625 case F2FS_IOC_FSSETXATTR:
3626 case F2FS_IOC_GET_PIN_FILE:
3627 case F2FS_IOC_SET_PIN_FILE:
3628 case F2FS_IOC_PRECACHE_EXTENTS:
3629 case F2FS_IOC_RESIZE_FS:
3630 case FS_IOC_ENABLE_VERITY:
3631 case FS_IOC_MEASURE_VERITY:
3632 case F2FS_IOC_GET_VOLUME_NAME:
3633 case F2FS_IOC_SET_VOLUME_NAME:
3634 break;
3635 default:
3636 return -ENOIOCTLCMD;
3637 }
3638 return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
3639 }
3640 #endif
3641
3642 const struct file_operations f2fs_file_operations = {
3643 .llseek = f2fs_llseek,
3644 .read_iter = f2fs_file_read_iter,
3645 .write_iter = f2fs_file_write_iter,
3646 .open = f2fs_file_open,
3647 .release = f2fs_release_file,
3648 .mmap = f2fs_file_mmap,
3649 .flush = f2fs_file_flush,
3650 .fsync = f2fs_sync_file,
3651 .fallocate = f2fs_fallocate,
3652 .unlocked_ioctl = f2fs_ioctl,
3653 #ifdef CONFIG_COMPAT
3654 .compat_ioctl = f2fs_compat_ioctl,
3655 #endif
3656 .splice_read = generic_file_splice_read,
3657 .splice_write = iter_file_splice_write,
3658 };
Linux with added FPC-III support