1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * fs/f2fs/file.c
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
7 */
8 #include <linux/fs.h>
9 #include <linux/f2fs_fs.h>
10 #include <linux/stat.h>
11 #include <linux/buffer_head.h>
12 #include <linux/writeback.h>
13 #include <linux/blkdev.h>
14 #include <linux/falloc.h>
15 #include <linux/types.h>
16 #include <linux/compat.h>
17 #include <linux/uaccess.h>
18 #include <linux/mount.h>
19 #include <linux/pagevec.h>
20 #include <linux/uio.h>
21 #include <linux/uuid.h>
22 #include <linux/file.h>
23 #include <linux/nls.h>
24 #include <linux/sched/signal.h>
25 #include <linux/fileattr.h>
26 #include <linux/fadvise.h>
27 #include <linux/iomap.h>
28
29 #include "f2fs.h"
30 #include "node.h"
31 #include "segment.h"
32 #include "xattr.h"
33 #include "acl.h"
34 #include "gc.h"
35 #include "iostat.h"
36 #include <trace/events/f2fs.h>
37 #include <uapi/linux/f2fs.h>
38
f2fs_filemap_fault(struct vm_fault * vmf)39 static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf)
40 {
41 struct inode *inode = file_inode(vmf->vma->vm_file);
42 vm_fault_t ret;
43
44 ret = filemap_fault(vmf);
45 if (ret & VM_FAULT_LOCKED)
46 f2fs_update_iostat(F2FS_I_SB(inode), inode,
47 APP_MAPPED_READ_IO, F2FS_BLKSIZE);
48
49 trace_f2fs_filemap_fault(inode, vmf->pgoff, (unsigned long)ret);
50
51 return ret;
52 }
53
f2fs_vm_page_mkwrite(struct vm_fault * vmf)54 static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf)
55 {
56 struct page *page = vmf->page;
57 struct inode *inode = file_inode(vmf->vma->vm_file);
58 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
59 struct dnode_of_data dn;
60 bool need_alloc = true;
61 int err = 0;
62
63 if (unlikely(IS_IMMUTABLE(inode)))
64 return VM_FAULT_SIGBUS;
65
66 if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED))
67 return VM_FAULT_SIGBUS;
68
69 if (unlikely(f2fs_cp_error(sbi))) {
70 err = -EIO;
71 goto err;
72 }
73
74 if (!f2fs_is_checkpoint_ready(sbi)) {
75 err = -ENOSPC;
76 goto err;
77 }
78
79 err = f2fs_convert_inline_inode(inode);
80 if (err)
81 goto err;
82
83 #ifdef CONFIG_F2FS_FS_COMPRESSION
84 if (f2fs_compressed_file(inode)) {
85 int ret = f2fs_is_compressed_cluster(inode, page->index);
86
87 if (ret < 0) {
88 err = ret;
89 goto err;
90 } else if (ret) {
91 need_alloc = false;
92 }
93 }
94 #endif
95 /* should do out of any locked page */
96 if (need_alloc)
97 f2fs_balance_fs(sbi, true);
98
99 sb_start_pagefault(inode->i_sb);
100
101 f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
102
103 file_update_time(vmf->vma->vm_file);
104 filemap_invalidate_lock_shared(inode->i_mapping);
105 lock_page(page);
106 if (unlikely(page->mapping != inode->i_mapping ||
107 page_offset(page) > i_size_read(inode) ||
108 !PageUptodate(page))) {
109 unlock_page(page);
110 err = -EFAULT;
111 goto out_sem;
112 }
113
114 if (need_alloc) {
115 /* block allocation */
116 set_new_dnode(&dn, inode, NULL, NULL, 0);
117 err = f2fs_get_block_locked(&dn, page->index);
118 }
119
120 #ifdef CONFIG_F2FS_FS_COMPRESSION
121 if (!need_alloc) {
122 set_new_dnode(&dn, inode, NULL, NULL, 0);
123 err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE);
124 f2fs_put_dnode(&dn);
125 }
126 #endif
127 if (err) {
128 unlock_page(page);
129 goto out_sem;
130 }
131
132 f2fs_wait_on_page_writeback(page, DATA, false, true);
133
134 /* wait for GCed page writeback via META_MAPPING */
135 f2fs_wait_on_block_writeback(inode, dn.data_blkaddr);
136
137 /*
138 * check to see if the page is mapped already (no holes)
139 */
140 if (PageMappedToDisk(page))
141 goto out_sem;
142
143 /* page is wholly or partially inside EOF */
144 if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
145 i_size_read(inode)) {
146 loff_t offset;
147
148 offset = i_size_read(inode) & ~PAGE_MASK;
149 zero_user_segment(page, offset, PAGE_SIZE);
150 }
151 set_page_dirty(page);
152
153 f2fs_update_iostat(sbi, inode, APP_MAPPED_IO, F2FS_BLKSIZE);
154 f2fs_update_time(sbi, REQ_TIME);
155
156 trace_f2fs_vm_page_mkwrite(page, DATA);
157 out_sem:
158 filemap_invalidate_unlock_shared(inode->i_mapping);
159
160 sb_end_pagefault(inode->i_sb);
161 err:
162 return vmf_fs_error(err);
163 }
164
165 static const struct vm_operations_struct f2fs_file_vm_ops = {
166 .fault = f2fs_filemap_fault,
167 .map_pages = filemap_map_pages,
168 .page_mkwrite = f2fs_vm_page_mkwrite,
169 };
170
get_parent_ino(struct inode * inode,nid_t * pino)171 static int get_parent_ino(struct inode *inode, nid_t *pino)
172 {
173 struct dentry *dentry;
174
175 /*
176 * Make sure to get the non-deleted alias. The alias associated with
177 * the open file descriptor being fsync()'ed may be deleted already.
178 */
179 dentry = d_find_alias(inode);
180 if (!dentry)
181 return 0;
182
183 *pino = parent_ino(dentry);
184 dput(dentry);
185 return 1;
186 }
187
need_do_checkpoint(struct inode * inode)188 static inline enum cp_reason_type need_do_checkpoint(struct inode *inode)
189 {
190 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
191 enum cp_reason_type cp_reason = CP_NO_NEEDED;
192
193 if (!S_ISREG(inode->i_mode))
194 cp_reason = CP_NON_REGULAR;
195 else if (f2fs_compressed_file(inode))
196 cp_reason = CP_COMPRESSED;
197 else if (inode->i_nlink != 1)
198 cp_reason = CP_HARDLINK;
199 else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
200 cp_reason = CP_SB_NEED_CP;
201 else if (file_wrong_pino(inode))
202 cp_reason = CP_WRONG_PINO;
203 else if (!f2fs_space_for_roll_forward(sbi))
204 cp_reason = CP_NO_SPC_ROLL;
205 else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
206 cp_reason = CP_NODE_NEED_CP;
207 else if (test_opt(sbi, FASTBOOT))
208 cp_reason = CP_FASTBOOT_MODE;
209 else if (F2FS_OPTION(sbi).active_logs == 2)
210 cp_reason = CP_SPEC_LOG_NUM;
211 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT &&
212 f2fs_need_dentry_mark(sbi, inode->i_ino) &&
213 f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino,
214 TRANS_DIR_INO))
215 cp_reason = CP_RECOVER_DIR;
216
217 return cp_reason;
218 }
219
need_inode_page_update(struct f2fs_sb_info * sbi,nid_t ino)220 static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
221 {
222 struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
223 bool ret = false;
224 /* But we need to avoid that there are some inode updates */
225 if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino))
226 ret = true;
227 f2fs_put_page(i, 0);
228 return ret;
229 }
230
try_to_fix_pino(struct inode * inode)231 static void try_to_fix_pino(struct inode *inode)
232 {
233 struct f2fs_inode_info *fi = F2FS_I(inode);
234 nid_t pino;
235
236 f2fs_down_write(&fi->i_sem);
237 if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
238 get_parent_ino(inode, &pino)) {
239 f2fs_i_pino_write(inode, pino);
240 file_got_pino(inode);
241 }
242 f2fs_up_write(&fi->i_sem);
243 }
244
f2fs_do_sync_file(struct file * file,loff_t start,loff_t end,int datasync,bool atomic)245 static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
246 int datasync, bool atomic)
247 {
248 struct inode *inode = file->f_mapping->host;
249 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
250 nid_t ino = inode->i_ino;
251 int ret = 0;
252 enum cp_reason_type cp_reason = 0;
253 struct writeback_control wbc = {
254 .sync_mode = WB_SYNC_ALL,
255 .nr_to_write = LONG_MAX,
256 .for_reclaim = 0,
257 };
258 unsigned int seq_id = 0;
259
260 if (unlikely(f2fs_readonly(inode->i_sb)))
261 return 0;
262
263 trace_f2fs_sync_file_enter(inode);
264
265 if (S_ISDIR(inode->i_mode))
266 goto go_write;
267
268 /* if fdatasync is triggered, let's do in-place-update */
269 if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
270 set_inode_flag(inode, FI_NEED_IPU);
271 ret = file_write_and_wait_range(file, start, end);
272 clear_inode_flag(inode, FI_NEED_IPU);
273
274 if (ret || is_sbi_flag_set(sbi, SBI_CP_DISABLED)) {
275 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
276 return ret;
277 }
278
279 /* if the inode is dirty, let's recover all the time */
280 if (!f2fs_skip_inode_update(inode, datasync)) {
281 f2fs_write_inode(inode, NULL);
282 goto go_write;
283 }
284
285 /*
286 * if there is no written data, don't waste time to write recovery info.
287 */
288 if (!is_inode_flag_set(inode, FI_APPEND_WRITE) &&
289 !f2fs_exist_written_data(sbi, ino, APPEND_INO)) {
290
291 /* it may call write_inode just prior to fsync */
292 if (need_inode_page_update(sbi, ino))
293 goto go_write;
294
295 if (is_inode_flag_set(inode, FI_UPDATE_WRITE) ||
296 f2fs_exist_written_data(sbi, ino, UPDATE_INO))
297 goto flush_out;
298 goto out;
299 } else {
300 /*
301 * for OPU case, during fsync(), node can be persisted before
302 * data when lower device doesn't support write barrier, result
303 * in data corruption after SPO.
304 * So for strict fsync mode, force to use atomic write semantics
305 * to keep write order in between data/node and last node to
306 * avoid potential data corruption.
307 */
308 if (F2FS_OPTION(sbi).fsync_mode ==
309 FSYNC_MODE_STRICT && !atomic)
310 atomic = true;
311 }
312 go_write:
313 /*
314 * Both of fdatasync() and fsync() are able to be recovered from
315 * sudden-power-off.
316 */
317 f2fs_down_read(&F2FS_I(inode)->i_sem);
318 cp_reason = need_do_checkpoint(inode);
319 f2fs_up_read(&F2FS_I(inode)->i_sem);
320
321 if (cp_reason) {
322 /* all the dirty node pages should be flushed for POR */
323 ret = f2fs_sync_fs(inode->i_sb, 1);
324
325 /*
326 * We've secured consistency through sync_fs. Following pino
327 * will be used only for fsynced inodes after checkpoint.
328 */
329 try_to_fix_pino(inode);
330 clear_inode_flag(inode, FI_APPEND_WRITE);
331 clear_inode_flag(inode, FI_UPDATE_WRITE);
332 goto out;
333 }
334 sync_nodes:
335 atomic_inc(&sbi->wb_sync_req[NODE]);
336 ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic, &seq_id);
337 atomic_dec(&sbi->wb_sync_req[NODE]);
338 if (ret)
339 goto out;
340
341 /* if cp_error was enabled, we should avoid infinite loop */
342 if (unlikely(f2fs_cp_error(sbi))) {
343 ret = -EIO;
344 goto out;
345 }
346
347 if (f2fs_need_inode_block_update(sbi, ino)) {
348 f2fs_mark_inode_dirty_sync(inode, true);
349 f2fs_write_inode(inode, NULL);
350 goto sync_nodes;
351 }
352
353 /*
354 * If it's atomic_write, it's just fine to keep write ordering. So
355 * here we don't need to wait for node write completion, since we use
356 * node chain which serializes node blocks. If one of node writes are
357 * reordered, we can see simply broken chain, resulting in stopping
358 * roll-forward recovery. It means we'll recover all or none node blocks
359 * given fsync mark.
360 */
361 if (!atomic) {
362 ret = f2fs_wait_on_node_pages_writeback(sbi, seq_id);
363 if (ret)
364 goto out;
365 }
366
367 /* once recovery info is written, don't need to tack this */
368 f2fs_remove_ino_entry(sbi, ino, APPEND_INO);
369 clear_inode_flag(inode, FI_APPEND_WRITE);
370 flush_out:
371 if ((!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER) ||
372 (atomic && !test_opt(sbi, NOBARRIER) && f2fs_sb_has_blkzoned(sbi)))
373 ret = f2fs_issue_flush(sbi, inode->i_ino);
374 if (!ret) {
375 f2fs_remove_ino_entry(sbi, ino, UPDATE_INO);
376 clear_inode_flag(inode, FI_UPDATE_WRITE);
377 f2fs_remove_ino_entry(sbi, ino, FLUSH_INO);
378 }
379 f2fs_update_time(sbi, REQ_TIME);
380 out:
381 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
382 return ret;
383 }
384
f2fs_sync_file(struct file * file,loff_t start,loff_t end,int datasync)385 int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
386 {
387 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
388 return -EIO;
389 return f2fs_do_sync_file(file, start, end, datasync, false);
390 }
391
__found_offset(struct address_space * mapping,block_t blkaddr,pgoff_t index,int whence)392 static bool __found_offset(struct address_space *mapping, block_t blkaddr,
393 pgoff_t index, int whence)
394 {
395 switch (whence) {
396 case SEEK_DATA:
397 if (__is_valid_data_blkaddr(blkaddr))
398 return true;
399 if (blkaddr == NEW_ADDR &&
400 xa_get_mark(&mapping->i_pages, index, PAGECACHE_TAG_DIRTY))
401 return true;
402 break;
403 case SEEK_HOLE:
404 if (blkaddr == NULL_ADDR)
405 return true;
406 break;
407 }
408 return false;
409 }
410
f2fs_seek_block(struct file * file,loff_t offset,int whence)411 static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
412 {
413 struct inode *inode = file->f_mapping->host;
414 loff_t maxbytes = inode->i_sb->s_maxbytes;
415 struct dnode_of_data dn;
416 pgoff_t pgofs, end_offset;
417 loff_t data_ofs = offset;
418 loff_t isize;
419 int err = 0;
420
421 inode_lock(inode);
422
423 isize = i_size_read(inode);
424 if (offset >= isize)
425 goto fail;
426
427 /* handle inline data case */
428 if (f2fs_has_inline_data(inode)) {
429 if (whence == SEEK_HOLE) {
430 data_ofs = isize;
431 goto found;
432 } else if (whence == SEEK_DATA) {
433 data_ofs = offset;
434 goto found;
435 }
436 }
437
438 pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
439
440 for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
441 set_new_dnode(&dn, inode, NULL, NULL, 0);
442 err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
443 if (err && err != -ENOENT) {
444 goto fail;
445 } else if (err == -ENOENT) {
446 /* direct node does not exists */
447 if (whence == SEEK_DATA) {
448 pgofs = f2fs_get_next_page_offset(&dn, pgofs);
449 continue;
450 } else {
451 goto found;
452 }
453 }
454
455 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
456
457 /* find data/hole in dnode block */
458 for (; dn.ofs_in_node < end_offset;
459 dn.ofs_in_node++, pgofs++,
460 data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
461 block_t blkaddr;
462
463 blkaddr = f2fs_data_blkaddr(&dn);
464
465 if (__is_valid_data_blkaddr(blkaddr) &&
466 !f2fs_is_valid_blkaddr(F2FS_I_SB(inode),
467 blkaddr, DATA_GENERIC_ENHANCE)) {
468 f2fs_put_dnode(&dn);
469 goto fail;
470 }
471
472 if (__found_offset(file->f_mapping, blkaddr,
473 pgofs, whence)) {
474 f2fs_put_dnode(&dn);
475 goto found;
476 }
477 }
478 f2fs_put_dnode(&dn);
479 }
480
481 if (whence == SEEK_DATA)
482 goto fail;
483 found:
484 if (whence == SEEK_HOLE && data_ofs > isize)
485 data_ofs = isize;
486 inode_unlock(inode);
487 return vfs_setpos(file, data_ofs, maxbytes);
488 fail:
489 inode_unlock(inode);
490 return -ENXIO;
491 }
492
f2fs_llseek(struct file * file,loff_t offset,int whence)493 static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
494 {
495 struct inode *inode = file->f_mapping->host;
496 loff_t maxbytes = inode->i_sb->s_maxbytes;
497
498 if (f2fs_compressed_file(inode))
499 maxbytes = max_file_blocks(inode) << F2FS_BLKSIZE_BITS;
500
501 switch (whence) {
502 case SEEK_SET:
503 case SEEK_CUR:
504 case SEEK_END:
505 return generic_file_llseek_size(file, offset, whence,
506 maxbytes, i_size_read(inode));
507 case SEEK_DATA:
508 case SEEK_HOLE:
509 if (offset < 0)
510 return -ENXIO;
511 return f2fs_seek_block(file, offset, whence);
512 }
513
514 return -EINVAL;
515 }
516
f2fs_file_mmap(struct file * file,struct vm_area_struct * vma)517 static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
518 {
519 struct inode *inode = file_inode(file);
520
521 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
522 return -EIO;
523
524 if (!f2fs_is_compress_backend_ready(inode))
525 return -EOPNOTSUPP;
526
527 file_accessed(file);
528 vma->vm_ops = &f2fs_file_vm_ops;
529
530 f2fs_down_read(&F2FS_I(inode)->i_sem);
531 set_inode_flag(inode, FI_MMAP_FILE);
532 f2fs_up_read(&F2FS_I(inode)->i_sem);
533
534 return 0;
535 }
536
f2fs_file_open(struct inode * inode,struct file * filp)537 static int f2fs_file_open(struct inode *inode, struct file *filp)
538 {
539 int err = fscrypt_file_open(inode, filp);
540
541 if (err)
542 return err;
543
544 if (!f2fs_is_compress_backend_ready(inode))
545 return -EOPNOTSUPP;
546
547 err = fsverity_file_open(inode, filp);
548 if (err)
549 return err;
550
551 filp->f_mode |= FMODE_NOWAIT | FMODE_BUF_RASYNC;
552 filp->f_mode |= FMODE_CAN_ODIRECT;
553
554 return dquot_file_open(inode, filp);
555 }
556
f2fs_truncate_data_blocks_range(struct dnode_of_data * dn,int count)557 void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count)
558 {
559 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
560 int nr_free = 0, ofs = dn->ofs_in_node, len = count;
561 __le32 *addr;
562 bool compressed_cluster = false;
563 int cluster_index = 0, valid_blocks = 0;
564 int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
565 bool released = !atomic_read(&F2FS_I(dn->inode)->i_compr_blocks);
566
567 addr = get_dnode_addr(dn->inode, dn->node_page) + ofs;
568
569 /* Assumption: truncation starts with cluster */
570 for (; count > 0; count--, addr++, dn->ofs_in_node++, cluster_index++) {
571 block_t blkaddr = le32_to_cpu(*addr);
572
573 if (f2fs_compressed_file(dn->inode) &&
574 !(cluster_index & (cluster_size - 1))) {
575 if (compressed_cluster)
576 f2fs_i_compr_blocks_update(dn->inode,
577 valid_blocks, false);
578 compressed_cluster = (blkaddr == COMPRESS_ADDR);
579 valid_blocks = 0;
580 }
581
582 if (blkaddr == NULL_ADDR)
583 continue;
584
585 f2fs_set_data_blkaddr(dn, NULL_ADDR);
586
587 if (__is_valid_data_blkaddr(blkaddr)) {
588 if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
589 DATA_GENERIC_ENHANCE))
590 continue;
591 if (compressed_cluster)
592 valid_blocks++;
593 }
594
595 f2fs_invalidate_blocks(sbi, blkaddr);
596
597 if (!released || blkaddr != COMPRESS_ADDR)
598 nr_free++;
599 }
600
601 if (compressed_cluster)
602 f2fs_i_compr_blocks_update(dn->inode, valid_blocks, false);
603
604 if (nr_free) {
605 pgoff_t fofs;
606 /*
607 * once we invalidate valid blkaddr in range [ofs, ofs + count],
608 * we will invalidate all blkaddr in the whole range.
609 */
610 fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page),
611 dn->inode) + ofs;
612 f2fs_update_read_extent_cache_range(dn, fofs, 0, len);
613 f2fs_update_age_extent_cache_range(dn, fofs, len);
614 dec_valid_block_count(sbi, dn->inode, nr_free);
615 }
616 dn->ofs_in_node = ofs;
617
618 f2fs_update_time(sbi, REQ_TIME);
619 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
620 dn->ofs_in_node, nr_free);
621 }
622
truncate_partial_data_page(struct inode * inode,u64 from,bool cache_only)623 static int truncate_partial_data_page(struct inode *inode, u64 from,
624 bool cache_only)
625 {
626 loff_t offset = from & (PAGE_SIZE - 1);
627 pgoff_t index = from >> PAGE_SHIFT;
628 struct address_space *mapping = inode->i_mapping;
629 struct page *page;
630
631 if (!offset && !cache_only)
632 return 0;
633
634 if (cache_only) {
635 page = find_lock_page(mapping, index);
636 if (page && PageUptodate(page))
637 goto truncate_out;
638 f2fs_put_page(page, 1);
639 return 0;
640 }
641
642 page = f2fs_get_lock_data_page(inode, index, true);
643 if (IS_ERR(page))
644 return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
645 truncate_out:
646 f2fs_wait_on_page_writeback(page, DATA, true, true);
647 zero_user(page, offset, PAGE_SIZE - offset);
648
649 /* An encrypted inode should have a key and truncate the last page. */
650 f2fs_bug_on(F2FS_I_SB(inode), cache_only && IS_ENCRYPTED(inode));
651 if (!cache_only)
652 set_page_dirty(page);
653 f2fs_put_page(page, 1);
654 return 0;
655 }
656
f2fs_do_truncate_blocks(struct inode * inode,u64 from,bool lock)657 int f2fs_do_truncate_blocks(struct inode *inode, u64 from, bool lock)
658 {
659 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
660 struct dnode_of_data dn;
661 pgoff_t free_from;
662 int count = 0, err = 0;
663 struct page *ipage;
664 bool truncate_page = false;
665
666 trace_f2fs_truncate_blocks_enter(inode, from);
667
668 free_from = (pgoff_t)F2FS_BLK_ALIGN(from);
669
670 if (free_from >= max_file_blocks(inode))
671 goto free_partial;
672
673 if (lock)
674 f2fs_lock_op(sbi);
675
676 ipage = f2fs_get_node_page(sbi, inode->i_ino);
677 if (IS_ERR(ipage)) {
678 err = PTR_ERR(ipage);
679 goto out;
680 }
681
682 if (f2fs_has_inline_data(inode)) {
683 f2fs_truncate_inline_inode(inode, ipage, from);
684 f2fs_put_page(ipage, 1);
685 truncate_page = true;
686 goto out;
687 }
688
689 set_new_dnode(&dn, inode, ipage, NULL, 0);
690 err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
691 if (err) {
692 if (err == -ENOENT)
693 goto free_next;
694 goto out;
695 }
696
697 count = ADDRS_PER_PAGE(dn.node_page, inode);
698
699 count -= dn.ofs_in_node;
700 f2fs_bug_on(sbi, count < 0);
701
702 if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
703 f2fs_truncate_data_blocks_range(&dn, count);
704 free_from += count;
705 }
706
707 f2fs_put_dnode(&dn);
708 free_next:
709 err = f2fs_truncate_inode_blocks(inode, free_from);
710 out:
711 if (lock)
712 f2fs_unlock_op(sbi);
713 free_partial:
714 /* lastly zero out the first data page */
715 if (!err)
716 err = truncate_partial_data_page(inode, from, truncate_page);
717
718 trace_f2fs_truncate_blocks_exit(inode, err);
719 return err;
720 }
721
f2fs_truncate_blocks(struct inode * inode,u64 from,bool lock)722 int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock)
723 {
724 u64 free_from = from;
725 int err;
726
727 #ifdef CONFIG_F2FS_FS_COMPRESSION
728 /*
729 * for compressed file, only support cluster size
730 * aligned truncation.
731 */
732 if (f2fs_compressed_file(inode))
733 free_from = round_up(from,
734 F2FS_I(inode)->i_cluster_size << PAGE_SHIFT);
735 #endif
736
737 err = f2fs_do_truncate_blocks(inode, free_from, lock);
738 if (err)
739 return err;
740
741 #ifdef CONFIG_F2FS_FS_COMPRESSION
742 /*
743 * For compressed file, after release compress blocks, don't allow write
744 * direct, but we should allow write direct after truncate to zero.
745 */
746 if (f2fs_compressed_file(inode) && !free_from
747 && is_inode_flag_set(inode, FI_COMPRESS_RELEASED))
748 clear_inode_flag(inode, FI_COMPRESS_RELEASED);
749
750 if (from != free_from) {
751 err = f2fs_truncate_partial_cluster(inode, from, lock);
752 if (err)
753 return err;
754 }
755 #endif
756
757 return 0;
758 }
759
f2fs_truncate(struct inode * inode)760 int f2fs_truncate(struct inode *inode)
761 {
762 int err;
763
764 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
765 return -EIO;
766
767 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
768 S_ISLNK(inode->i_mode)))
769 return 0;
770
771 trace_f2fs_truncate(inode);
772
773 if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE))
774 return -EIO;
775
776 err = f2fs_dquot_initialize(inode);
777 if (err)
778 return err;
779
780 /* we should check inline_data size */
781 if (!f2fs_may_inline_data(inode)) {
782 err = f2fs_convert_inline_inode(inode);
783 if (err)
784 return err;
785 }
786
787 err = f2fs_truncate_blocks(inode, i_size_read(inode), true);
788 if (err)
789 return err;
790
791 inode->i_mtime = inode_set_ctime_current(inode);
792 f2fs_mark_inode_dirty_sync(inode, false);
793 return 0;
794 }
795
f2fs_force_buffered_io(struct inode * inode,int rw)796 static bool f2fs_force_buffered_io(struct inode *inode, int rw)
797 {
798 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
799
800 if (!fscrypt_dio_supported(inode))
801 return true;
802 if (fsverity_active(inode))
803 return true;
804 if (f2fs_compressed_file(inode))
805 return true;
806
807 /* disallow direct IO if any of devices has unaligned blksize */
808 if (f2fs_is_multi_device(sbi) && !sbi->aligned_blksize)
809 return true;
810 /*
811 * for blkzoned device, fallback direct IO to buffered IO, so
812 * all IOs can be serialized by log-structured write.
813 */
814 if (f2fs_sb_has_blkzoned(sbi) && (rw == WRITE))
815 return true;
816 if (is_sbi_flag_set(sbi, SBI_CP_DISABLED))
817 return true;
818
819 return false;
820 }
821
f2fs_getattr(struct mnt_idmap * idmap,const struct path * path,struct kstat * stat,u32 request_mask,unsigned int query_flags)822 int f2fs_getattr(struct mnt_idmap *idmap, const struct path *path,
823 struct kstat *stat, u32 request_mask, unsigned int query_flags)
824 {
825 struct inode *inode = d_inode(path->dentry);
826 struct f2fs_inode_info *fi = F2FS_I(inode);
827 struct f2fs_inode *ri = NULL;
828 unsigned int flags;
829
830 if (f2fs_has_extra_attr(inode) &&
831 f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
832 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
833 stat->result_mask |= STATX_BTIME;
834 stat->btime.tv_sec = fi->i_crtime.tv_sec;
835 stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
836 }
837
838 /*
839 * Return the DIO alignment restrictions if requested. We only return
840 * this information when requested, since on encrypted files it might
841 * take a fair bit of work to get if the file wasn't opened recently.
842 *
843 * f2fs sometimes supports DIO reads but not DIO writes. STATX_DIOALIGN
844 * cannot represent that, so in that case we report no DIO support.
845 */
846 if ((request_mask & STATX_DIOALIGN) && S_ISREG(inode->i_mode)) {
847 unsigned int bsize = i_blocksize(inode);
848
849 stat->result_mask |= STATX_DIOALIGN;
850 if (!f2fs_force_buffered_io(inode, WRITE)) {
851 stat->dio_mem_align = bsize;
852 stat->dio_offset_align = bsize;
853 }
854 }
855
856 flags = fi->i_flags;
857 if (flags & F2FS_COMPR_FL)
858 stat->attributes |= STATX_ATTR_COMPRESSED;
859 if (flags & F2FS_APPEND_FL)
860 stat->attributes |= STATX_ATTR_APPEND;
861 if (IS_ENCRYPTED(inode))
862 stat->attributes |= STATX_ATTR_ENCRYPTED;
863 if (flags & F2FS_IMMUTABLE_FL)
864 stat->attributes |= STATX_ATTR_IMMUTABLE;
865 if (flags & F2FS_NODUMP_FL)
866 stat->attributes |= STATX_ATTR_NODUMP;
867 if (IS_VERITY(inode))
868 stat->attributes |= STATX_ATTR_VERITY;
869
870 stat->attributes_mask |= (STATX_ATTR_COMPRESSED |
871 STATX_ATTR_APPEND |
872 STATX_ATTR_ENCRYPTED |
873 STATX_ATTR_IMMUTABLE |
874 STATX_ATTR_NODUMP |
875 STATX_ATTR_VERITY);
876
877 generic_fillattr(idmap, request_mask, inode, stat);
878
879 /* we need to show initial sectors used for inline_data/dentries */
880 if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) ||
881 f2fs_has_inline_dentry(inode))
882 stat->blocks += (stat->size + 511) >> 9;
883
884 return 0;
885 }
886
887 #ifdef CONFIG_F2FS_FS_POSIX_ACL
__setattr_copy(struct mnt_idmap * idmap,struct inode * inode,const struct iattr * attr)888 static void __setattr_copy(struct mnt_idmap *idmap,
889 struct inode *inode, const struct iattr *attr)
890 {
891 unsigned int ia_valid = attr->ia_valid;
892
893 i_uid_update(idmap, attr, inode);
894 i_gid_update(idmap, attr, inode);
895 if (ia_valid & ATTR_ATIME)
896 inode->i_atime = attr->ia_atime;
897 if (ia_valid & ATTR_MTIME)
898 inode->i_mtime = attr->ia_mtime;
899 if (ia_valid & ATTR_CTIME)
900 inode_set_ctime_to_ts(inode, attr->ia_ctime);
901 if (ia_valid & ATTR_MODE) {
902 umode_t mode = attr->ia_mode;
903 vfsgid_t vfsgid = i_gid_into_vfsgid(idmap, inode);
904
905 if (!vfsgid_in_group_p(vfsgid) &&
906 !capable_wrt_inode_uidgid(idmap, inode, CAP_FSETID))
907 mode &= ~S_ISGID;
908 set_acl_inode(inode, mode);
909 }
910 }
911 #else
912 #define __setattr_copy setattr_copy
913 #endif
914
f2fs_setattr(struct mnt_idmap * idmap,struct dentry * dentry,struct iattr * attr)915 int f2fs_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
916 struct iattr *attr)
917 {
918 struct inode *inode = d_inode(dentry);
919 int err;
920
921 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
922 return -EIO;
923
924 if (unlikely(IS_IMMUTABLE(inode)))
925 return -EPERM;
926
927 if (unlikely(IS_APPEND(inode) &&
928 (attr->ia_valid & (ATTR_MODE | ATTR_UID |
929 ATTR_GID | ATTR_TIMES_SET))))
930 return -EPERM;
931
932 if ((attr->ia_valid & ATTR_SIZE)) {
933 if (!f2fs_is_compress_backend_ready(inode))
934 return -EOPNOTSUPP;
935 if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED) &&
936 !IS_ALIGNED(attr->ia_size,
937 F2FS_BLK_TO_BYTES(F2FS_I(inode)->i_cluster_size)))
938 return -EINVAL;
939 }
940
941 err = setattr_prepare(idmap, dentry, attr);
942 if (err)
943 return err;
944
945 err = fscrypt_prepare_setattr(dentry, attr);
946 if (err)
947 return err;
948
949 err = fsverity_prepare_setattr(dentry, attr);
950 if (err)
951 return err;
952
953 if (is_quota_modification(idmap, inode, attr)) {
954 err = f2fs_dquot_initialize(inode);
955 if (err)
956 return err;
957 }
958 if (i_uid_needs_update(idmap, attr, inode) ||
959 i_gid_needs_update(idmap, attr, inode)) {
960 f2fs_lock_op(F2FS_I_SB(inode));
961 err = dquot_transfer(idmap, inode, attr);
962 if (err) {
963 set_sbi_flag(F2FS_I_SB(inode),
964 SBI_QUOTA_NEED_REPAIR);
965 f2fs_unlock_op(F2FS_I_SB(inode));
966 return err;
967 }
968 /*
969 * update uid/gid under lock_op(), so that dquot and inode can
970 * be updated atomically.
971 */
972 i_uid_update(idmap, attr, inode);
973 i_gid_update(idmap, attr, inode);
974 f2fs_mark_inode_dirty_sync(inode, true);
975 f2fs_unlock_op(F2FS_I_SB(inode));
976 }
977
978 if (attr->ia_valid & ATTR_SIZE) {
979 loff_t old_size = i_size_read(inode);
980
981 if (attr->ia_size > MAX_INLINE_DATA(inode)) {
982 /*
983 * should convert inline inode before i_size_write to
984 * keep smaller than inline_data size with inline flag.
985 */
986 err = f2fs_convert_inline_inode(inode);
987 if (err)
988 return err;
989 }
990
991 f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
992 filemap_invalidate_lock(inode->i_mapping);
993
994 truncate_setsize(inode, attr->ia_size);
995
996 if (attr->ia_size <= old_size)
997 err = f2fs_truncate(inode);
998 /*
999 * do not trim all blocks after i_size if target size is
1000 * larger than i_size.
1001 */
1002 filemap_invalidate_unlock(inode->i_mapping);
1003 f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1004 if (err)
1005 return err;
1006
1007 spin_lock(&F2FS_I(inode)->i_size_lock);
1008 inode->i_mtime = inode_set_ctime_current(inode);
1009 F2FS_I(inode)->last_disk_size = i_size_read(inode);
1010 spin_unlock(&F2FS_I(inode)->i_size_lock);
1011 }
1012
1013 __setattr_copy(idmap, inode, attr);
1014
1015 if (attr->ia_valid & ATTR_MODE) {
1016 err = posix_acl_chmod(idmap, dentry, f2fs_get_inode_mode(inode));
1017
1018 if (is_inode_flag_set(inode, FI_ACL_MODE)) {
1019 if (!err)
1020 inode->i_mode = F2FS_I(inode)->i_acl_mode;
1021 clear_inode_flag(inode, FI_ACL_MODE);
1022 }
1023 }
1024
1025 /* file size may changed here */
1026 f2fs_mark_inode_dirty_sync(inode, true);
1027
1028 /* inode change will produce dirty node pages flushed by checkpoint */
1029 f2fs_balance_fs(F2FS_I_SB(inode), true);
1030
1031 return err;
1032 }
1033
1034 const struct inode_operations f2fs_file_inode_operations = {
1035 .getattr = f2fs_getattr,
1036 .setattr = f2fs_setattr,
1037 .get_inode_acl = f2fs_get_acl,
1038 .set_acl = f2fs_set_acl,
1039 .listxattr = f2fs_listxattr,
1040 .fiemap = f2fs_fiemap,
1041 .fileattr_get = f2fs_fileattr_get,
1042 .fileattr_set = f2fs_fileattr_set,
1043 };
1044
fill_zero(struct inode * inode,pgoff_t index,loff_t start,loff_t len)1045 static int fill_zero(struct inode *inode, pgoff_t index,
1046 loff_t start, loff_t len)
1047 {
1048 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1049 struct page *page;
1050
1051 if (!len)
1052 return 0;
1053
1054 f2fs_balance_fs(sbi, true);
1055
1056 f2fs_lock_op(sbi);
1057 page = f2fs_get_new_data_page(inode, NULL, index, false);
1058 f2fs_unlock_op(sbi);
1059
1060 if (IS_ERR(page))
1061 return PTR_ERR(page);
1062
1063 f2fs_wait_on_page_writeback(page, DATA, true, true);
1064 zero_user(page, start, len);
1065 set_page_dirty(page);
1066 f2fs_put_page(page, 1);
1067 return 0;
1068 }
1069
f2fs_truncate_hole(struct inode * inode,pgoff_t pg_start,pgoff_t pg_end)1070 int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
1071 {
1072 int err;
1073
1074 while (pg_start < pg_end) {
1075 struct dnode_of_data dn;
1076 pgoff_t end_offset, count;
1077
1078 set_new_dnode(&dn, inode, NULL, NULL, 0);
1079 err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
1080 if (err) {
1081 if (err == -ENOENT) {
1082 pg_start = f2fs_get_next_page_offset(&dn,
1083 pg_start);
1084 continue;
1085 }
1086 return err;
1087 }
1088
1089 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1090 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
1091
1092 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
1093
1094 f2fs_truncate_data_blocks_range(&dn, count);
1095 f2fs_put_dnode(&dn);
1096
1097 pg_start += count;
1098 }
1099 return 0;
1100 }
1101
f2fs_punch_hole(struct inode * inode,loff_t offset,loff_t len)1102 static int f2fs_punch_hole(struct inode *inode, loff_t offset, loff_t len)
1103 {
1104 pgoff_t pg_start, pg_end;
1105 loff_t off_start, off_end;
1106 int ret;
1107
1108 ret = f2fs_convert_inline_inode(inode);
1109 if (ret)
1110 return ret;
1111
1112 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1113 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
1114
1115 off_start = offset & (PAGE_SIZE - 1);
1116 off_end = (offset + len) & (PAGE_SIZE - 1);
1117
1118 if (pg_start == pg_end) {
1119 ret = fill_zero(inode, pg_start, off_start,
1120 off_end - off_start);
1121 if (ret)
1122 return ret;
1123 } else {
1124 if (off_start) {
1125 ret = fill_zero(inode, pg_start++, off_start,
1126 PAGE_SIZE - off_start);
1127 if (ret)
1128 return ret;
1129 }
1130 if (off_end) {
1131 ret = fill_zero(inode, pg_end, 0, off_end);
1132 if (ret)
1133 return ret;
1134 }
1135
1136 if (pg_start < pg_end) {
1137 loff_t blk_start, blk_end;
1138 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1139
1140 f2fs_balance_fs(sbi, true);
1141
1142 blk_start = (loff_t)pg_start << PAGE_SHIFT;
1143 blk_end = (loff_t)pg_end << PAGE_SHIFT;
1144
1145 f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1146 filemap_invalidate_lock(inode->i_mapping);
1147
1148 truncate_pagecache_range(inode, blk_start, blk_end - 1);
1149
1150 f2fs_lock_op(sbi);
1151 ret = f2fs_truncate_hole(inode, pg_start, pg_end);
1152 f2fs_unlock_op(sbi);
1153
1154 filemap_invalidate_unlock(inode->i_mapping);
1155 f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1156 }
1157 }
1158
1159 return ret;
1160 }
1161
__read_out_blkaddrs(struct inode * inode,block_t * blkaddr,int * do_replace,pgoff_t off,pgoff_t len)1162 static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr,
1163 int *do_replace, pgoff_t off, pgoff_t len)
1164 {
1165 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1166 struct dnode_of_data dn;
1167 int ret, done, i;
1168
1169 next_dnode:
1170 set_new_dnode(&dn, inode, NULL, NULL, 0);
1171 ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA);
1172 if (ret && ret != -ENOENT) {
1173 return ret;
1174 } else if (ret == -ENOENT) {
1175 if (dn.max_level == 0)
1176 return -ENOENT;
1177 done = min((pgoff_t)ADDRS_PER_BLOCK(inode) -
1178 dn.ofs_in_node, len);
1179 blkaddr += done;
1180 do_replace += done;
1181 goto next;
1182 }
1183
1184 done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) -
1185 dn.ofs_in_node, len);
1186 for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) {
1187 *blkaddr = f2fs_data_blkaddr(&dn);
1188
1189 if (__is_valid_data_blkaddr(*blkaddr) &&
1190 !f2fs_is_valid_blkaddr(sbi, *blkaddr,
1191 DATA_GENERIC_ENHANCE)) {
1192 f2fs_put_dnode(&dn);
1193 f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
1194 return -EFSCORRUPTED;
1195 }
1196
1197 if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) {
1198
1199 if (f2fs_lfs_mode(sbi)) {
1200 f2fs_put_dnode(&dn);
1201 return -EOPNOTSUPP;
1202 }
1203
1204 /* do not invalidate this block address */
1205 f2fs_update_data_blkaddr(&dn, NULL_ADDR);
1206 *do_replace = 1;
1207 }
1208 }
1209 f2fs_put_dnode(&dn);
1210 next:
1211 len -= done;
1212 off += done;
1213 if (len)
1214 goto next_dnode;
1215 return 0;
1216 }
1217
__roll_back_blkaddrs(struct inode * inode,block_t * blkaddr,int * do_replace,pgoff_t off,int len)1218 static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr,
1219 int *do_replace, pgoff_t off, int len)
1220 {
1221 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1222 struct dnode_of_data dn;
1223 int ret, i;
1224
1225 for (i = 0; i < len; i++, do_replace++, blkaddr++) {
1226 if (*do_replace == 0)
1227 continue;
1228
1229 set_new_dnode(&dn, inode, NULL, NULL, 0);
1230 ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA);
1231 if (ret) {
1232 dec_valid_block_count(sbi, inode, 1);
1233 f2fs_invalidate_blocks(sbi, *blkaddr);
1234 } else {
1235 f2fs_update_data_blkaddr(&dn, *blkaddr);
1236 }
1237 f2fs_put_dnode(&dn);
1238 }
1239 return 0;
1240 }
1241
__clone_blkaddrs(struct inode * src_inode,struct inode * dst_inode,block_t * blkaddr,int * do_replace,pgoff_t src,pgoff_t dst,pgoff_t len,bool full)1242 static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode,
1243 block_t *blkaddr, int *do_replace,
1244 pgoff_t src, pgoff_t dst, pgoff_t len, bool full)
1245 {
1246 struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode);
1247 pgoff_t i = 0;
1248 int ret;
1249
1250 while (i < len) {
1251 if (blkaddr[i] == NULL_ADDR && !full) {
1252 i++;
1253 continue;
1254 }
1255
1256 if (do_replace[i] || blkaddr[i] == NULL_ADDR) {
1257 struct dnode_of_data dn;
1258 struct node_info ni;
1259 size_t new_size;
1260 pgoff_t ilen;
1261
1262 set_new_dnode(&dn, dst_inode, NULL, NULL, 0);
1263 ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE);
1264 if (ret)
1265 return ret;
1266
1267 ret = f2fs_get_node_info(sbi, dn.nid, &ni, false);
1268 if (ret) {
1269 f2fs_put_dnode(&dn);
1270 return ret;
1271 }
1272
1273 ilen = min((pgoff_t)
1274 ADDRS_PER_PAGE(dn.node_page, dst_inode) -
1275 dn.ofs_in_node, len - i);
1276 do {
1277 dn.data_blkaddr = f2fs_data_blkaddr(&dn);
1278 f2fs_truncate_data_blocks_range(&dn, 1);
1279
1280 if (do_replace[i]) {
1281 f2fs_i_blocks_write(src_inode,
1282 1, false, false);
1283 f2fs_i_blocks_write(dst_inode,
1284 1, true, false);
1285 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
1286 blkaddr[i], ni.version, true, false);
1287
1288 do_replace[i] = 0;
1289 }
1290 dn.ofs_in_node++;
1291 i++;
1292 new_size = (loff_t)(dst + i) << PAGE_SHIFT;
1293 if (dst_inode->i_size < new_size)
1294 f2fs_i_size_write(dst_inode, new_size);
1295 } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR));
1296
1297 f2fs_put_dnode(&dn);
1298 } else {
1299 struct page *psrc, *pdst;
1300
1301 psrc = f2fs_get_lock_data_page(src_inode,
1302 src + i, true);
1303 if (IS_ERR(psrc))
1304 return PTR_ERR(psrc);
1305 pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i,
1306 true);
1307 if (IS_ERR(pdst)) {
1308 f2fs_put_page(psrc, 1);
1309 return PTR_ERR(pdst);
1310 }
1311
1312 f2fs_wait_on_page_writeback(pdst, DATA, true, true);
1313
1314 memcpy_page(pdst, 0, psrc, 0, PAGE_SIZE);
1315 set_page_dirty(pdst);
1316 set_page_private_gcing(pdst);
1317 f2fs_put_page(pdst, 1);
1318 f2fs_put_page(psrc, 1);
1319
1320 ret = f2fs_truncate_hole(src_inode,
1321 src + i, src + i + 1);
1322 if (ret)
1323 return ret;
1324 i++;
1325 }
1326 }
1327 return 0;
1328 }
1329
__exchange_data_block(struct inode * src_inode,struct inode * dst_inode,pgoff_t src,pgoff_t dst,pgoff_t len,bool full)1330 static int __exchange_data_block(struct inode *src_inode,
1331 struct inode *dst_inode, pgoff_t src, pgoff_t dst,
1332 pgoff_t len, bool full)
1333 {
1334 block_t *src_blkaddr;
1335 int *do_replace;
1336 pgoff_t olen;
1337 int ret;
1338
1339 while (len) {
1340 olen = min((pgoff_t)4 * ADDRS_PER_BLOCK(src_inode), len);
1341
1342 src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1343 array_size(olen, sizeof(block_t)),
1344 GFP_NOFS);
1345 if (!src_blkaddr)
1346 return -ENOMEM;
1347
1348 do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1349 array_size(olen, sizeof(int)),
1350 GFP_NOFS);
1351 if (!do_replace) {
1352 kvfree(src_blkaddr);
1353 return -ENOMEM;
1354 }
1355
1356 ret = __read_out_blkaddrs(src_inode, src_blkaddr,
1357 do_replace, src, olen);
1358 if (ret)
1359 goto roll_back;
1360
1361 ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr,
1362 do_replace, src, dst, olen, full);
1363 if (ret)
1364 goto roll_back;
1365
1366 src += olen;
1367 dst += olen;
1368 len -= olen;
1369
1370 kvfree(src_blkaddr);
1371 kvfree(do_replace);
1372 }
1373 return 0;
1374
1375 roll_back:
1376 __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen);
1377 kvfree(src_blkaddr);
1378 kvfree(do_replace);
1379 return ret;
1380 }
1381
f2fs_do_collapse(struct inode * inode,loff_t offset,loff_t len)1382 static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len)
1383 {
1384 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1385 pgoff_t nrpages = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
1386 pgoff_t start = offset >> PAGE_SHIFT;
1387 pgoff_t end = (offset + len) >> PAGE_SHIFT;
1388 int ret;
1389
1390 f2fs_balance_fs(sbi, true);
1391
1392 /* avoid gc operation during block exchange */
1393 f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1394 filemap_invalidate_lock(inode->i_mapping);
1395
1396 f2fs_lock_op(sbi);
1397 f2fs_drop_extent_tree(inode);
1398 truncate_pagecache(inode, offset);
1399 ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
1400 f2fs_unlock_op(sbi);
1401
1402 filemap_invalidate_unlock(inode->i_mapping);
1403 f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1404 return ret;
1405 }
1406
f2fs_collapse_range(struct inode * inode,loff_t offset,loff_t len)1407 static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
1408 {
1409 loff_t new_size;
1410 int ret;
1411
1412 if (offset + len >= i_size_read(inode))
1413 return -EINVAL;
1414
1415 /* collapse range should be aligned to block size of f2fs. */
1416 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1417 return -EINVAL;
1418
1419 ret = f2fs_convert_inline_inode(inode);
1420 if (ret)
1421 return ret;
1422
1423 /* write out all dirty pages from offset */
1424 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1425 if (ret)
1426 return ret;
1427
1428 ret = f2fs_do_collapse(inode, offset, len);
1429 if (ret)
1430 return ret;
1431
1432 /* write out all moved pages, if possible */
1433 filemap_invalidate_lock(inode->i_mapping);
1434 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1435 truncate_pagecache(inode, offset);
1436
1437 new_size = i_size_read(inode) - len;
1438 ret = f2fs_truncate_blocks(inode, new_size, true);
1439 filemap_invalidate_unlock(inode->i_mapping);
1440 if (!ret)
1441 f2fs_i_size_write(inode, new_size);
1442 return ret;
1443 }
1444
f2fs_do_zero_range(struct dnode_of_data * dn,pgoff_t start,pgoff_t end)1445 static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start,
1446 pgoff_t end)
1447 {
1448 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1449 pgoff_t index = start;
1450 unsigned int ofs_in_node = dn->ofs_in_node;
1451 blkcnt_t count = 0;
1452 int ret;
1453
1454 for (; index < end; index++, dn->ofs_in_node++) {
1455 if (f2fs_data_blkaddr(dn) == NULL_ADDR)
1456 count++;
1457 }
1458
1459 dn->ofs_in_node = ofs_in_node;
1460 ret = f2fs_reserve_new_blocks(dn, count);
1461 if (ret)
1462 return ret;
1463
1464 dn->ofs_in_node = ofs_in_node;
1465 for (index = start; index < end; index++, dn->ofs_in_node++) {
1466 dn->data_blkaddr = f2fs_data_blkaddr(dn);
1467 /*
1468 * f2fs_reserve_new_blocks will not guarantee entire block
1469 * allocation.
1470 */
1471 if (dn->data_blkaddr == NULL_ADDR) {
1472 ret = -ENOSPC;
1473 break;
1474 }
1475
1476 if (dn->data_blkaddr == NEW_ADDR)
1477 continue;
1478
1479 if (!f2fs_is_valid_blkaddr(sbi, dn->data_blkaddr,
1480 DATA_GENERIC_ENHANCE)) {
1481 ret = -EFSCORRUPTED;
1482 f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
1483 break;
1484 }
1485
1486 f2fs_invalidate_blocks(sbi, dn->data_blkaddr);
1487 f2fs_set_data_blkaddr(dn, NEW_ADDR);
1488 }
1489
1490 f2fs_update_read_extent_cache_range(dn, start, 0, index - start);
1491 f2fs_update_age_extent_cache_range(dn, start, index - start);
1492
1493 return ret;
1494 }
1495
f2fs_zero_range(struct inode * inode,loff_t offset,loff_t len,int mode)1496 static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
1497 int mode)
1498 {
1499 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1500 struct address_space *mapping = inode->i_mapping;
1501 pgoff_t index, pg_start, pg_end;
1502 loff_t new_size = i_size_read(inode);
1503 loff_t off_start, off_end;
1504 int ret = 0;
1505
1506 ret = inode_newsize_ok(inode, (len + offset));
1507 if (ret)
1508 return ret;
1509
1510 ret = f2fs_convert_inline_inode(inode);
1511 if (ret)
1512 return ret;
1513
1514 ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
1515 if (ret)
1516 return ret;
1517
1518 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1519 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
1520
1521 off_start = offset & (PAGE_SIZE - 1);
1522 off_end = (offset + len) & (PAGE_SIZE - 1);
1523
1524 if (pg_start == pg_end) {
1525 ret = fill_zero(inode, pg_start, off_start,
1526 off_end - off_start);
1527 if (ret)
1528 return ret;
1529
1530 new_size = max_t(loff_t, new_size, offset + len);
1531 } else {
1532 if (off_start) {
1533 ret = fill_zero(inode, pg_start++, off_start,
1534 PAGE_SIZE - off_start);
1535 if (ret)
1536 return ret;
1537
1538 new_size = max_t(loff_t, new_size,
1539 (loff_t)pg_start << PAGE_SHIFT);
1540 }
1541
1542 for (index = pg_start; index < pg_end;) {
1543 struct dnode_of_data dn;
1544 unsigned int end_offset;
1545 pgoff_t end;
1546
1547 f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1548 filemap_invalidate_lock(mapping);
1549
1550 truncate_pagecache_range(inode,
1551 (loff_t)index << PAGE_SHIFT,
1552 ((loff_t)pg_end << PAGE_SHIFT) - 1);
1553
1554 f2fs_lock_op(sbi);
1555
1556 set_new_dnode(&dn, inode, NULL, NULL, 0);
1557 ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE);
1558 if (ret) {
1559 f2fs_unlock_op(sbi);
1560 filemap_invalidate_unlock(mapping);
1561 f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1562 goto out;
1563 }
1564
1565 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1566 end = min(pg_end, end_offset - dn.ofs_in_node + index);
1567
1568 ret = f2fs_do_zero_range(&dn, index, end);
1569 f2fs_put_dnode(&dn);
1570
1571 f2fs_unlock_op(sbi);
1572 filemap_invalidate_unlock(mapping);
1573 f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1574
1575 f2fs_balance_fs(sbi, dn.node_changed);
1576
1577 if (ret)
1578 goto out;
1579
1580 index = end;
1581 new_size = max_t(loff_t, new_size,
1582 (loff_t)index << PAGE_SHIFT);
1583 }
1584
1585 if (off_end) {
1586 ret = fill_zero(inode, pg_end, 0, off_end);
1587 if (ret)
1588 goto out;
1589
1590 new_size = max_t(loff_t, new_size, offset + len);
1591 }
1592 }
1593
1594 out:
1595 if (new_size > i_size_read(inode)) {
1596 if (mode & FALLOC_FL_KEEP_SIZE)
1597 file_set_keep_isize(inode);
1598 else
1599 f2fs_i_size_write(inode, new_size);
1600 }
1601 return ret;
1602 }
1603
f2fs_insert_range(struct inode * inode,loff_t offset,loff_t len)1604 static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
1605 {
1606 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1607 struct address_space *mapping = inode->i_mapping;
1608 pgoff_t nr, pg_start, pg_end, delta, idx;
1609 loff_t new_size;
1610 int ret = 0;
1611
1612 new_size = i_size_read(inode) + len;
1613 ret = inode_newsize_ok(inode, new_size);
1614 if (ret)
1615 return ret;
1616
1617 if (offset >= i_size_read(inode))
1618 return -EINVAL;
1619
1620 /* insert range should be aligned to block size of f2fs. */
1621 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1622 return -EINVAL;
1623
1624 ret = f2fs_convert_inline_inode(inode);
1625 if (ret)
1626 return ret;
1627
1628 f2fs_balance_fs(sbi, true);
1629
1630 filemap_invalidate_lock(mapping);
1631 ret = f2fs_truncate_blocks(inode, i_size_read(inode), true);
1632 filemap_invalidate_unlock(mapping);
1633 if (ret)
1634 return ret;
1635
1636 /* write out all dirty pages from offset */
1637 ret = filemap_write_and_wait_range(mapping, offset, LLONG_MAX);
1638 if (ret)
1639 return ret;
1640
1641 pg_start = offset >> PAGE_SHIFT;
1642 pg_end = (offset + len) >> PAGE_SHIFT;
1643 delta = pg_end - pg_start;
1644 idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
1645
1646 /* avoid gc operation during block exchange */
1647 f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1648 filemap_invalidate_lock(mapping);
1649 truncate_pagecache(inode, offset);
1650
1651 while (!ret && idx > pg_start) {
1652 nr = idx - pg_start;
1653 if (nr > delta)
1654 nr = delta;
1655 idx -= nr;
1656
1657 f2fs_lock_op(sbi);
1658 f2fs_drop_extent_tree(inode);
1659
1660 ret = __exchange_data_block(inode, inode, idx,
1661 idx + delta, nr, false);
1662 f2fs_unlock_op(sbi);
1663 }
1664 filemap_invalidate_unlock(mapping);
1665 f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1666
1667 /* write out all moved pages, if possible */
1668 filemap_invalidate_lock(mapping);
1669 filemap_write_and_wait_range(mapping, offset, LLONG_MAX);
1670 truncate_pagecache(inode, offset);
1671 filemap_invalidate_unlock(mapping);
1672
1673 if (!ret)
1674 f2fs_i_size_write(inode, new_size);
1675 return ret;
1676 }
1677
f2fs_expand_inode_data(struct inode * inode,loff_t offset,loff_t len,int mode)1678 static int f2fs_expand_inode_data(struct inode *inode, loff_t offset,
1679 loff_t len, int mode)
1680 {
1681 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1682 struct f2fs_map_blocks map = { .m_next_pgofs = NULL,
1683 .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE,
1684 .m_may_create = true };
1685 struct f2fs_gc_control gc_control = { .victim_segno = NULL_SEGNO,
1686 .init_gc_type = FG_GC,
1687 .should_migrate_blocks = false,
1688 .err_gc_skipped = true,
1689 .nr_free_secs = 0 };
1690 pgoff_t pg_start, pg_end;
1691 loff_t new_size;
1692 loff_t off_end;
1693 block_t expanded = 0;
1694 int err;
1695
1696 err = inode_newsize_ok(inode, (len + offset));
1697 if (err)
1698 return err;
1699
1700 err = f2fs_convert_inline_inode(inode);
1701 if (err)
1702 return err;
1703
1704 f2fs_balance_fs(sbi, true);
1705
1706 pg_start = ((unsigned long long)offset) >> PAGE_SHIFT;
1707 pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT;
1708 off_end = (offset + len) & (PAGE_SIZE - 1);
1709
1710 map.m_lblk = pg_start;
1711 map.m_len = pg_end - pg_start;
1712 if (off_end)
1713 map.m_len++;
1714
1715 if (!map.m_len)
1716 return 0;
1717
1718 if (f2fs_is_pinned_file(inode)) {
1719 block_t sec_blks = CAP_BLKS_PER_SEC(sbi);
1720 block_t sec_len = roundup(map.m_len, sec_blks);
1721
1722 map.m_len = sec_blks;
1723 next_alloc:
1724 if (has_not_enough_free_secs(sbi, 0,
1725 GET_SEC_FROM_SEG(sbi, overprovision_segments(sbi)))) {
1726 f2fs_down_write(&sbi->gc_lock);
1727 stat_inc_gc_call_count(sbi, FOREGROUND);
1728 err = f2fs_gc(sbi, &gc_control);
1729 if (err && err != -ENODATA)
1730 goto out_err;
1731 }
1732
1733 f2fs_down_write(&sbi->pin_sem);
1734
1735 err = f2fs_allocate_pinning_section(sbi);
1736 if (err) {
1737 f2fs_up_write(&sbi->pin_sem);
1738 goto out_err;
1739 }
1740
1741 map.m_seg_type = CURSEG_COLD_DATA_PINNED;
1742 err = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_PRE_DIO);
1743 file_dont_truncate(inode);
1744
1745 f2fs_up_write(&sbi->pin_sem);
1746
1747 expanded += map.m_len;
1748 sec_len -= map.m_len;
1749 map.m_lblk += map.m_len;
1750 if (!err && sec_len)
1751 goto next_alloc;
1752
1753 map.m_len = expanded;
1754 } else {
1755 err = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_PRE_AIO);
1756 expanded = map.m_len;
1757 }
1758 out_err:
1759 if (err) {
1760 pgoff_t last_off;
1761
1762 if (!expanded)
1763 return err;
1764
1765 last_off = pg_start + expanded - 1;
1766
1767 /* update new size to the failed position */
1768 new_size = (last_off == pg_end) ? offset + len :
1769 (loff_t)(last_off + 1) << PAGE_SHIFT;
1770 } else {
1771 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
1772 }
1773
1774 if (new_size > i_size_read(inode)) {
1775 if (mode & FALLOC_FL_KEEP_SIZE)
1776 file_set_keep_isize(inode);
1777 else
1778 f2fs_i_size_write(inode, new_size);
1779 }
1780
1781 return err;
1782 }
1783
f2fs_fallocate(struct file * file,int mode,loff_t offset,loff_t len)1784 static long f2fs_fallocate(struct file *file, int mode,
1785 loff_t offset, loff_t len)
1786 {
1787 struct inode *inode = file_inode(file);
1788 long ret = 0;
1789
1790 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
1791 return -EIO;
1792 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode)))
1793 return -ENOSPC;
1794 if (!f2fs_is_compress_backend_ready(inode))
1795 return -EOPNOTSUPP;
1796
1797 /* f2fs only support ->fallocate for regular file */
1798 if (!S_ISREG(inode->i_mode))
1799 return -EINVAL;
1800
1801 if (IS_ENCRYPTED(inode) &&
1802 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
1803 return -EOPNOTSUPP;
1804
1805 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
1806 FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1807 FALLOC_FL_INSERT_RANGE))
1808 return -EOPNOTSUPP;
1809
1810 inode_lock(inode);
1811
1812 /*
1813 * Pinned file should not support partial truncation since the block
1814 * can be used by applications.
1815 */
1816 if ((f2fs_compressed_file(inode) || f2fs_is_pinned_file(inode)) &&
1817 (mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE |
1818 FALLOC_FL_ZERO_RANGE | FALLOC_FL_INSERT_RANGE))) {
1819 ret = -EOPNOTSUPP;
1820 goto out;
1821 }
1822
1823 ret = file_modified(file);
1824 if (ret)
1825 goto out;
1826
1827 if (mode & FALLOC_FL_PUNCH_HOLE) {
1828 if (offset >= inode->i_size)
1829 goto out;
1830
1831 ret = f2fs_punch_hole(inode, offset, len);
1832 } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1833 ret = f2fs_collapse_range(inode, offset, len);
1834 } else if (mode & FALLOC_FL_ZERO_RANGE) {
1835 ret = f2fs_zero_range(inode, offset, len, mode);
1836 } else if (mode & FALLOC_FL_INSERT_RANGE) {
1837 ret = f2fs_insert_range(inode, offset, len);
1838 } else {
1839 ret = f2fs_expand_inode_data(inode, offset, len, mode);
1840 }
1841
1842 if (!ret) {
1843 inode->i_mtime = inode_set_ctime_current(inode);
1844 f2fs_mark_inode_dirty_sync(inode, false);
1845 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1846 }
1847
1848 out:
1849 inode_unlock(inode);
1850
1851 trace_f2fs_fallocate(inode, mode, offset, len, ret);
1852 return ret;
1853 }
1854
f2fs_release_file(struct inode * inode,struct file * filp)1855 static int f2fs_release_file(struct inode *inode, struct file *filp)
1856 {
1857 /*
1858 * f2fs_release_file is called at every close calls. So we should
1859 * not drop any inmemory pages by close called by other process.
1860 */
1861 if (!(filp->f_mode & FMODE_WRITE) ||
1862 atomic_read(&inode->i_writecount) != 1)
1863 return 0;
1864
1865 inode_lock(inode);
1866 f2fs_abort_atomic_write(inode, true);
1867 inode_unlock(inode);
1868
1869 return 0;
1870 }
1871
f2fs_file_flush(struct file * file,fl_owner_t id)1872 static int f2fs_file_flush(struct file *file, fl_owner_t id)
1873 {
1874 struct inode *inode = file_inode(file);
1875
1876 /*
1877 * If the process doing a transaction is crashed, we should do
1878 * roll-back. Otherwise, other reader/write can see corrupted database
1879 * until all the writers close its file. Since this should be done
1880 * before dropping file lock, it needs to do in ->flush.
1881 */
1882 if (F2FS_I(inode)->atomic_write_task == current &&
1883 (current->flags & PF_EXITING)) {
1884 inode_lock(inode);
1885 f2fs_abort_atomic_write(inode, true);
1886 inode_unlock(inode);
1887 }
1888
1889 return 0;
1890 }
1891
f2fs_setflags_common(struct inode * inode,u32 iflags,u32 mask)1892 static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask)
1893 {
1894 struct f2fs_inode_info *fi = F2FS_I(inode);
1895 u32 masked_flags = fi->i_flags & mask;
1896
1897 /* mask can be shrunk by flags_valid selector */
1898 iflags &= mask;
1899
1900 /* Is it quota file? Do not allow user to mess with it */
1901 if (IS_NOQUOTA(inode))
1902 return -EPERM;
1903
1904 if ((iflags ^ masked_flags) & F2FS_CASEFOLD_FL) {
1905 if (!f2fs_sb_has_casefold(F2FS_I_SB(inode)))
1906 return -EOPNOTSUPP;
1907 if (!f2fs_empty_dir(inode))
1908 return -ENOTEMPTY;
1909 }
1910
1911 if (iflags & (F2FS_COMPR_FL | F2FS_NOCOMP_FL)) {
1912 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
1913 return -EOPNOTSUPP;
1914 if ((iflags & F2FS_COMPR_FL) && (iflags & F2FS_NOCOMP_FL))
1915 return -EINVAL;
1916 }
1917
1918 if ((iflags ^ masked_flags) & F2FS_COMPR_FL) {
1919 if (masked_flags & F2FS_COMPR_FL) {
1920 if (!f2fs_disable_compressed_file(inode))
1921 return -EINVAL;
1922 } else {
1923 /* try to convert inline_data to support compression */
1924 int err = f2fs_convert_inline_inode(inode);
1925 if (err)
1926 return err;
1927
1928 f2fs_down_write(&F2FS_I(inode)->i_sem);
1929 if (!f2fs_may_compress(inode) ||
1930 (S_ISREG(inode->i_mode) &&
1931 F2FS_HAS_BLOCKS(inode))) {
1932 f2fs_up_write(&F2FS_I(inode)->i_sem);
1933 return -EINVAL;
1934 }
1935 err = set_compress_context(inode);
1936 f2fs_up_write(&F2FS_I(inode)->i_sem);
1937
1938 if (err)
1939 return err;
1940 }
1941 }
1942
1943 fi->i_flags = iflags | (fi->i_flags & ~mask);
1944 f2fs_bug_on(F2FS_I_SB(inode), (fi->i_flags & F2FS_COMPR_FL) &&
1945 (fi->i_flags & F2FS_NOCOMP_FL));
1946
1947 if (fi->i_flags & F2FS_PROJINHERIT_FL)
1948 set_inode_flag(inode, FI_PROJ_INHERIT);
1949 else
1950 clear_inode_flag(inode, FI_PROJ_INHERIT);
1951
1952 inode_set_ctime_current(inode);
1953 f2fs_set_inode_flags(inode);
1954 f2fs_mark_inode_dirty_sync(inode, true);
1955 return 0;
1956 }
1957
1958 /* FS_IOC_[GS]ETFLAGS and FS_IOC_FS[GS]ETXATTR support */
1959
1960 /*
1961 * To make a new on-disk f2fs i_flag gettable via FS_IOC_GETFLAGS, add an entry
1962 * for it to f2fs_fsflags_map[], and add its FS_*_FL equivalent to
1963 * F2FS_GETTABLE_FS_FL. To also make it settable via FS_IOC_SETFLAGS, also add
1964 * its FS_*_FL equivalent to F2FS_SETTABLE_FS_FL.
1965 *
1966 * Translating flags to fsx_flags value used by FS_IOC_FSGETXATTR and
1967 * FS_IOC_FSSETXATTR is done by the VFS.
1968 */
1969
1970 static const struct {
1971 u32 iflag;
1972 u32 fsflag;
1973 } f2fs_fsflags_map[] = {
1974 { F2FS_COMPR_FL, FS_COMPR_FL },
1975 { F2FS_SYNC_FL, FS_SYNC_FL },
1976 { F2FS_IMMUTABLE_FL, FS_IMMUTABLE_FL },
1977 { F2FS_APPEND_FL, FS_APPEND_FL },
1978 { F2FS_NODUMP_FL, FS_NODUMP_FL },
1979 { F2FS_NOATIME_FL, FS_NOATIME_FL },
1980 { F2FS_NOCOMP_FL, FS_NOCOMP_FL },
1981 { F2FS_INDEX_FL, FS_INDEX_FL },
1982 { F2FS_DIRSYNC_FL, FS_DIRSYNC_FL },
1983 { F2FS_PROJINHERIT_FL, FS_PROJINHERIT_FL },
1984 { F2FS_CASEFOLD_FL, FS_CASEFOLD_FL },
1985 };
1986
1987 #define F2FS_GETTABLE_FS_FL ( \
1988 FS_COMPR_FL | \
1989 FS_SYNC_FL | \
1990 FS_IMMUTABLE_FL | \
1991 FS_APPEND_FL | \
1992 FS_NODUMP_FL | \
1993 FS_NOATIME_FL | \
1994 FS_NOCOMP_FL | \
1995 FS_INDEX_FL | \
1996 FS_DIRSYNC_FL | \
1997 FS_PROJINHERIT_FL | \
1998 FS_ENCRYPT_FL | \
1999 FS_INLINE_DATA_FL | \
2000 FS_NOCOW_FL | \
2001 FS_VERITY_FL | \
2002 FS_CASEFOLD_FL)
2003
2004 #define F2FS_SETTABLE_FS_FL ( \
2005 FS_COMPR_FL | \
2006 FS_SYNC_FL | \
2007 FS_IMMUTABLE_FL | \
2008 FS_APPEND_FL | \
2009 FS_NODUMP_FL | \
2010 FS_NOATIME_FL | \
2011 FS_NOCOMP_FL | \
2012 FS_DIRSYNC_FL | \
2013 FS_PROJINHERIT_FL | \
2014 FS_CASEFOLD_FL)
2015
2016 /* Convert f2fs on-disk i_flags to FS_IOC_{GET,SET}FLAGS flags */
f2fs_iflags_to_fsflags(u32 iflags)2017 static inline u32 f2fs_iflags_to_fsflags(u32 iflags)
2018 {
2019 u32 fsflags = 0;
2020 int i;
2021
2022 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
2023 if (iflags & f2fs_fsflags_map[i].iflag)
2024 fsflags |= f2fs_fsflags_map[i].fsflag;
2025
2026 return fsflags;
2027 }
2028
2029 /* Convert FS_IOC_{GET,SET}FLAGS flags to f2fs on-disk i_flags */
f2fs_fsflags_to_iflags(u32 fsflags)2030 static inline u32 f2fs_fsflags_to_iflags(u32 fsflags)
2031 {
2032 u32 iflags = 0;
2033 int i;
2034
2035 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
2036 if (fsflags & f2fs_fsflags_map[i].fsflag)
2037 iflags |= f2fs_fsflags_map[i].iflag;
2038
2039 return iflags;
2040 }
2041
f2fs_ioc_getversion(struct file * filp,unsigned long arg)2042 static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
2043 {
2044 struct inode *inode = file_inode(filp);
2045
2046 return put_user(inode->i_generation, (int __user *)arg);
2047 }
2048
f2fs_ioc_start_atomic_write(struct file * filp,bool truncate)2049 static int f2fs_ioc_start_atomic_write(struct file *filp, bool truncate)
2050 {
2051 struct inode *inode = file_inode(filp);
2052 struct mnt_idmap *idmap = file_mnt_idmap(filp);
2053 struct f2fs_inode_info *fi = F2FS_I(inode);
2054 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2055 struct inode *pinode;
2056 loff_t isize;
2057 int ret;
2058
2059 if (!inode_owner_or_capable(idmap, inode))
2060 return -EACCES;
2061
2062 if (!S_ISREG(inode->i_mode))
2063 return -EINVAL;
2064
2065 if (filp->f_flags & O_DIRECT)
2066 return -EINVAL;
2067
2068 ret = mnt_want_write_file(filp);
2069 if (ret)
2070 return ret;
2071
2072 inode_lock(inode);
2073
2074 if (!f2fs_disable_compressed_file(inode)) {
2075 ret = -EINVAL;
2076 goto out;
2077 }
2078
2079 if (f2fs_is_atomic_file(inode))
2080 goto out;
2081
2082 ret = f2fs_convert_inline_inode(inode);
2083 if (ret)
2084 goto out;
2085
2086 f2fs_down_write(&fi->i_gc_rwsem[WRITE]);
2087
2088 /*
2089 * Should wait end_io to count F2FS_WB_CP_DATA correctly by
2090 * f2fs_is_atomic_file.
2091 */
2092 if (get_dirty_pages(inode))
2093 f2fs_warn(sbi, "Unexpected flush for atomic writes: ino=%lu, npages=%u",
2094 inode->i_ino, get_dirty_pages(inode));
2095 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
2096 if (ret) {
2097 f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
2098 goto out;
2099 }
2100
2101 /* Check if the inode already has a COW inode */
2102 if (fi->cow_inode == NULL) {
2103 /* Create a COW inode for atomic write */
2104 pinode = f2fs_iget(inode->i_sb, fi->i_pino);
2105 if (IS_ERR(pinode)) {
2106 f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
2107 ret = PTR_ERR(pinode);
2108 goto out;
2109 }
2110
2111 ret = f2fs_get_tmpfile(idmap, pinode, &fi->cow_inode);
2112 iput(pinode);
2113 if (ret) {
2114 f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
2115 goto out;
2116 }
2117
2118 set_inode_flag(fi->cow_inode, FI_COW_FILE);
2119 clear_inode_flag(fi->cow_inode, FI_INLINE_DATA);
2120 } else {
2121 /* Reuse the already created COW inode */
2122 ret = f2fs_do_truncate_blocks(fi->cow_inode, 0, true);
2123 if (ret) {
2124 f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
2125 goto out;
2126 }
2127 }
2128
2129 f2fs_write_inode(inode, NULL);
2130
2131 stat_inc_atomic_inode(inode);
2132
2133 set_inode_flag(inode, FI_ATOMIC_FILE);
2134
2135 isize = i_size_read(inode);
2136 fi->original_i_size = isize;
2137 if (truncate) {
2138 set_inode_flag(inode, FI_ATOMIC_REPLACE);
2139 truncate_inode_pages_final(inode->i_mapping);
2140 f2fs_i_size_write(inode, 0);
2141 isize = 0;
2142 }
2143 f2fs_i_size_write(fi->cow_inode, isize);
2144
2145 f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
2146
2147 f2fs_update_time(sbi, REQ_TIME);
2148 fi->atomic_write_task = current;
2149 stat_update_max_atomic_write(inode);
2150 fi->atomic_write_cnt = 0;
2151 out:
2152 inode_unlock(inode);
2153 mnt_drop_write_file(filp);
2154 return ret;
2155 }
2156
f2fs_ioc_commit_atomic_write(struct file * filp)2157 static int f2fs_ioc_commit_atomic_write(struct file *filp)
2158 {
2159 struct inode *inode = file_inode(filp);
2160 struct mnt_idmap *idmap = file_mnt_idmap(filp);
2161 int ret;
2162
2163 if (!inode_owner_or_capable(idmap, inode))
2164 return -EACCES;
2165
2166 ret = mnt_want_write_file(filp);
2167 if (ret)
2168 return ret;
2169
2170 f2fs_balance_fs(F2FS_I_SB(inode), true);
2171
2172 inode_lock(inode);
2173
2174 if (f2fs_is_atomic_file(inode)) {
2175 ret = f2fs_commit_atomic_write(inode);
2176 if (!ret)
2177 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
2178
2179 f2fs_abort_atomic_write(inode, ret);
2180 } else {
2181 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false);
2182 }
2183
2184 inode_unlock(inode);
2185 mnt_drop_write_file(filp);
2186 return ret;
2187 }
2188
f2fs_ioc_abort_atomic_write(struct file * filp)2189 static int f2fs_ioc_abort_atomic_write(struct file *filp)
2190 {
2191 struct inode *inode = file_inode(filp);
2192 struct mnt_idmap *idmap = file_mnt_idmap(filp);
2193 int ret;
2194
2195 if (!inode_owner_or_capable(idmap, inode))
2196 return -EACCES;
2197
2198 ret = mnt_want_write_file(filp);
2199 if (ret)
2200 return ret;
2201
2202 inode_lock(inode);
2203
2204 f2fs_abort_atomic_write(inode, true);
2205
2206 inode_unlock(inode);
2207
2208 mnt_drop_write_file(filp);
2209 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2210 return ret;
2211 }
2212
f2fs_ioc_shutdown(struct file * filp,unsigned long arg)2213 static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
2214 {
2215 struct inode *inode = file_inode(filp);
2216 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2217 struct super_block *sb = sbi->sb;
2218 __u32 in;
2219 int ret = 0;
2220
2221 if (!capable(CAP_SYS_ADMIN))
2222 return -EPERM;
2223
2224 if (get_user(in, (__u32 __user *)arg))
2225 return -EFAULT;
2226
2227 if (in != F2FS_GOING_DOWN_FULLSYNC) {
2228 ret = mnt_want_write_file(filp);
2229 if (ret) {
2230 if (ret == -EROFS) {
2231 ret = 0;
2232 f2fs_stop_checkpoint(sbi, false,
2233 STOP_CP_REASON_SHUTDOWN);
2234 trace_f2fs_shutdown(sbi, in, ret);
2235 }
2236 return ret;
2237 }
2238 }
2239
2240 switch (in) {
2241 case F2FS_GOING_DOWN_FULLSYNC:
2242 ret = freeze_bdev(sb->s_bdev);
2243 if (ret)
2244 goto out;
2245 f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_SHUTDOWN);
2246 thaw_bdev(sb->s_bdev);
2247 break;
2248 case F2FS_GOING_DOWN_METASYNC:
2249 /* do checkpoint only */
2250 ret = f2fs_sync_fs(sb, 1);
2251 if (ret)
2252 goto out;
2253 f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_SHUTDOWN);
2254 break;
2255 case F2FS_GOING_DOWN_NOSYNC:
2256 f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_SHUTDOWN);
2257 break;
2258 case F2FS_GOING_DOWN_METAFLUSH:
2259 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
2260 f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_SHUTDOWN);
2261 break;
2262 case F2FS_GOING_DOWN_NEED_FSCK:
2263 set_sbi_flag(sbi, SBI_NEED_FSCK);
2264 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
2265 set_sbi_flag(sbi, SBI_IS_DIRTY);
2266 /* do checkpoint only */
2267 ret = f2fs_sync_fs(sb, 1);
2268 goto out;
2269 default:
2270 ret = -EINVAL;
2271 goto out;
2272 }
2273
2274 f2fs_stop_gc_thread(sbi);
2275 f2fs_stop_discard_thread(sbi);
2276
2277 f2fs_drop_discard_cmd(sbi);
2278 clear_opt(sbi, DISCARD);
2279
2280 f2fs_update_time(sbi, REQ_TIME);
2281 out:
2282 if (in != F2FS_GOING_DOWN_FULLSYNC)
2283 mnt_drop_write_file(filp);
2284
2285 trace_f2fs_shutdown(sbi, in, ret);
2286
2287 return ret;
2288 }
2289
f2fs_ioc_fitrim(struct file * filp,unsigned long arg)2290 static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
2291 {
2292 struct inode *inode = file_inode(filp);
2293 struct super_block *sb = inode->i_sb;
2294 struct fstrim_range range;
2295 int ret;
2296
2297 if (!capable(CAP_SYS_ADMIN))
2298 return -EPERM;
2299
2300 if (!f2fs_hw_support_discard(F2FS_SB(sb)))
2301 return -EOPNOTSUPP;
2302
2303 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
2304 sizeof(range)))
2305 return -EFAULT;
2306
2307 ret = mnt_want_write_file(filp);
2308 if (ret)
2309 return ret;
2310
2311 range.minlen = max((unsigned int)range.minlen,
2312 bdev_discard_granularity(sb->s_bdev));
2313 ret = f2fs_trim_fs(F2FS_SB(sb), &range);
2314 mnt_drop_write_file(filp);
2315 if (ret < 0)
2316 return ret;
2317
2318 if (copy_to_user((struct fstrim_range __user *)arg, &range,
2319 sizeof(range)))
2320 return -EFAULT;
2321 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2322 return 0;
2323 }
2324
uuid_is_nonzero(__u8 u[16])2325 static bool uuid_is_nonzero(__u8 u[16])
2326 {
2327 int i;
2328
2329 for (i = 0; i < 16; i++)
2330 if (u[i])
2331 return true;
2332 return false;
2333 }
2334
f2fs_ioc_set_encryption_policy(struct file * filp,unsigned long arg)2335 static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
2336 {
2337 struct inode *inode = file_inode(filp);
2338
2339 if (!f2fs_sb_has_encrypt(F2FS_I_SB(inode)))
2340 return -EOPNOTSUPP;
2341
2342 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2343
2344 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
2345 }
2346
f2fs_ioc_get_encryption_policy(struct file * filp,unsigned long arg)2347 static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
2348 {
2349 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2350 return -EOPNOTSUPP;
2351 return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
2352 }
2353
f2fs_ioc_get_encryption_pwsalt(struct file * filp,unsigned long arg)2354 static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
2355 {
2356 struct inode *inode = file_inode(filp);
2357 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2358 u8 encrypt_pw_salt[16];
2359 int err;
2360
2361 if (!f2fs_sb_has_encrypt(sbi))
2362 return -EOPNOTSUPP;
2363
2364 err = mnt_want_write_file(filp);
2365 if (err)
2366 return err;
2367
2368 f2fs_down_write(&sbi->sb_lock);
2369
2370 if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
2371 goto got_it;
2372
2373 /* update superblock with uuid */
2374 generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
2375
2376 err = f2fs_commit_super(sbi, false);
2377 if (err) {
2378 /* undo new data */
2379 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
2380 goto out_err;
2381 }
2382 got_it:
2383 memcpy(encrypt_pw_salt, sbi->raw_super->encrypt_pw_salt, 16);
2384 out_err:
2385 f2fs_up_write(&sbi->sb_lock);
2386 mnt_drop_write_file(filp);
2387
2388 if (!err && copy_to_user((__u8 __user *)arg, encrypt_pw_salt, 16))
2389 err = -EFAULT;
2390
2391 return err;
2392 }
2393
f2fs_ioc_get_encryption_policy_ex(struct file * filp,unsigned long arg)2394 static int f2fs_ioc_get_encryption_policy_ex(struct file *filp,
2395 unsigned long arg)
2396 {
2397 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2398 return -EOPNOTSUPP;
2399
2400 return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg);
2401 }
2402
f2fs_ioc_add_encryption_key(struct file * filp,unsigned long arg)2403 static int f2fs_ioc_add_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_add_key(filp, (void __user *)arg);
2409 }
2410
f2fs_ioc_remove_encryption_key(struct file * filp,unsigned long arg)2411 static int f2fs_ioc_remove_encryption_key(struct file *filp, unsigned long arg)
2412 {
2413 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2414 return -EOPNOTSUPP;
2415
2416 return fscrypt_ioctl_remove_key(filp, (void __user *)arg);
2417 }
2418
f2fs_ioc_remove_encryption_key_all_users(struct file * filp,unsigned long arg)2419 static int f2fs_ioc_remove_encryption_key_all_users(struct file *filp,
2420 unsigned long arg)
2421 {
2422 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2423 return -EOPNOTSUPP;
2424
2425 return fscrypt_ioctl_remove_key_all_users(filp, (void __user *)arg);
2426 }
2427
f2fs_ioc_get_encryption_key_status(struct file * filp,unsigned long arg)2428 static int f2fs_ioc_get_encryption_key_status(struct file *filp,
2429 unsigned long arg)
2430 {
2431 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2432 return -EOPNOTSUPP;
2433
2434 return fscrypt_ioctl_get_key_status(filp, (void __user *)arg);
2435 }
2436
f2fs_ioc_get_encryption_nonce(struct file * filp,unsigned long arg)2437 static int f2fs_ioc_get_encryption_nonce(struct file *filp, unsigned long arg)
2438 {
2439 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2440 return -EOPNOTSUPP;
2441
2442 return fscrypt_ioctl_get_nonce(filp, (void __user *)arg);
2443 }
2444
f2fs_ioc_gc(struct file * filp,unsigned long arg)2445 static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
2446 {
2447 struct inode *inode = file_inode(filp);
2448 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2449 struct f2fs_gc_control gc_control = { .victim_segno = NULL_SEGNO,
2450 .no_bg_gc = false,
2451 .should_migrate_blocks = false,
2452 .nr_free_secs = 0 };
2453 __u32 sync;
2454 int ret;
2455
2456 if (!capable(CAP_SYS_ADMIN))
2457 return -EPERM;
2458
2459 if (get_user(sync, (__u32 __user *)arg))
2460 return -EFAULT;
2461
2462 if (f2fs_readonly(sbi->sb))
2463 return -EROFS;
2464
2465 ret = mnt_want_write_file(filp);
2466 if (ret)
2467 return ret;
2468
2469 if (!sync) {
2470 if (!f2fs_down_write_trylock(&sbi->gc_lock)) {
2471 ret = -EBUSY;
2472 goto out;
2473 }
2474 } else {
2475 f2fs_down_write(&sbi->gc_lock);
2476 }
2477
2478 gc_control.init_gc_type = sync ? FG_GC : BG_GC;
2479 gc_control.err_gc_skipped = sync;
2480 stat_inc_gc_call_count(sbi, FOREGROUND);
2481 ret = f2fs_gc(sbi, &gc_control);
2482 out:
2483 mnt_drop_write_file(filp);
2484 return ret;
2485 }
2486
__f2fs_ioc_gc_range(struct file * filp,struct f2fs_gc_range * range)2487 static int __f2fs_ioc_gc_range(struct file *filp, struct f2fs_gc_range *range)
2488 {
2489 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
2490 struct f2fs_gc_control gc_control = {
2491 .init_gc_type = range->sync ? FG_GC : BG_GC,
2492 .no_bg_gc = false,
2493 .should_migrate_blocks = false,
2494 .err_gc_skipped = range->sync,
2495 .nr_free_secs = 0 };
2496 u64 end;
2497 int ret;
2498
2499 if (!capable(CAP_SYS_ADMIN))
2500 return -EPERM;
2501 if (f2fs_readonly(sbi->sb))
2502 return -EROFS;
2503
2504 end = range->start + range->len;
2505 if (end < range->start || range->start < MAIN_BLKADDR(sbi) ||
2506 end >= MAX_BLKADDR(sbi))
2507 return -EINVAL;
2508
2509 ret = mnt_want_write_file(filp);
2510 if (ret)
2511 return ret;
2512
2513 do_more:
2514 if (!range->sync) {
2515 if (!f2fs_down_write_trylock(&sbi->gc_lock)) {
2516 ret = -EBUSY;
2517 goto out;
2518 }
2519 } else {
2520 f2fs_down_write(&sbi->gc_lock);
2521 }
2522
2523 gc_control.victim_segno = GET_SEGNO(sbi, range->start);
2524 stat_inc_gc_call_count(sbi, FOREGROUND);
2525 ret = f2fs_gc(sbi, &gc_control);
2526 if (ret) {
2527 if (ret == -EBUSY)
2528 ret = -EAGAIN;
2529 goto out;
2530 }
2531 range->start += CAP_BLKS_PER_SEC(sbi);
2532 if (range->start <= end)
2533 goto do_more;
2534 out:
2535 mnt_drop_write_file(filp);
2536 return ret;
2537 }
2538
f2fs_ioc_gc_range(struct file * filp,unsigned long arg)2539 static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
2540 {
2541 struct f2fs_gc_range range;
2542
2543 if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
2544 sizeof(range)))
2545 return -EFAULT;
2546 return __f2fs_ioc_gc_range(filp, &range);
2547 }
2548
f2fs_ioc_write_checkpoint(struct file * filp)2549 static int f2fs_ioc_write_checkpoint(struct file *filp)
2550 {
2551 struct inode *inode = file_inode(filp);
2552 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2553 int ret;
2554
2555 if (!capable(CAP_SYS_ADMIN))
2556 return -EPERM;
2557
2558 if (f2fs_readonly(sbi->sb))
2559 return -EROFS;
2560
2561 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
2562 f2fs_info(sbi, "Skipping Checkpoint. Checkpoints currently disabled.");
2563 return -EINVAL;
2564 }
2565
2566 ret = mnt_want_write_file(filp);
2567 if (ret)
2568 return ret;
2569
2570 ret = f2fs_sync_fs(sbi->sb, 1);
2571
2572 mnt_drop_write_file(filp);
2573 return ret;
2574 }
2575
f2fs_defragment_range(struct f2fs_sb_info * sbi,struct file * filp,struct f2fs_defragment * range)2576 static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
2577 struct file *filp,
2578 struct f2fs_defragment *range)
2579 {
2580 struct inode *inode = file_inode(filp);
2581 struct f2fs_map_blocks map = { .m_next_extent = NULL,
2582 .m_seg_type = NO_CHECK_TYPE,
2583 .m_may_create = false };
2584 struct extent_info ei = {};
2585 pgoff_t pg_start, pg_end, next_pgofs;
2586 unsigned int total = 0, sec_num;
2587 block_t blk_end = 0;
2588 bool fragmented = false;
2589 int err;
2590
2591 pg_start = range->start >> PAGE_SHIFT;
2592 pg_end = (range->start + range->len) >> PAGE_SHIFT;
2593
2594 f2fs_balance_fs(sbi, true);
2595
2596 inode_lock(inode);
2597
2598 if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) {
2599 err = -EINVAL;
2600 goto unlock_out;
2601 }
2602
2603 /* if in-place-update policy is enabled, don't waste time here */
2604 set_inode_flag(inode, FI_OPU_WRITE);
2605 if (f2fs_should_update_inplace(inode, NULL)) {
2606 err = -EINVAL;
2607 goto out;
2608 }
2609
2610 /* writeback all dirty pages in the range */
2611 err = filemap_write_and_wait_range(inode->i_mapping, range->start,
2612 range->start + range->len - 1);
2613 if (err)
2614 goto out;
2615
2616 /*
2617 * lookup mapping info in extent cache, skip defragmenting if physical
2618 * block addresses are continuous.
2619 */
2620 if (f2fs_lookup_read_extent_cache(inode, pg_start, &ei)) {
2621 if (ei.fofs + ei.len >= pg_end)
2622 goto out;
2623 }
2624
2625 map.m_lblk = pg_start;
2626 map.m_next_pgofs = &next_pgofs;
2627
2628 /*
2629 * lookup mapping info in dnode page cache, skip defragmenting if all
2630 * physical block addresses are continuous even if there are hole(s)
2631 * in logical blocks.
2632 */
2633 while (map.m_lblk < pg_end) {
2634 map.m_len = pg_end - map.m_lblk;
2635 err = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_DEFAULT);
2636 if (err)
2637 goto out;
2638
2639 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
2640 map.m_lblk = next_pgofs;
2641 continue;
2642 }
2643
2644 if (blk_end && blk_end != map.m_pblk)
2645 fragmented = true;
2646
2647 /* record total count of block that we're going to move */
2648 total += map.m_len;
2649
2650 blk_end = map.m_pblk + map.m_len;
2651
2652 map.m_lblk += map.m_len;
2653 }
2654
2655 if (!fragmented) {
2656 total = 0;
2657 goto out;
2658 }
2659
2660 sec_num = DIV_ROUND_UP(total, CAP_BLKS_PER_SEC(sbi));
2661
2662 /*
2663 * make sure there are enough free section for LFS allocation, this can
2664 * avoid defragment running in SSR mode when free section are allocated
2665 * intensively
2666 */
2667 if (has_not_enough_free_secs(sbi, 0, sec_num)) {
2668 err = -EAGAIN;
2669 goto out;
2670 }
2671
2672 map.m_lblk = pg_start;
2673 map.m_len = pg_end - pg_start;
2674 total = 0;
2675
2676 while (map.m_lblk < pg_end) {
2677 pgoff_t idx;
2678 int cnt = 0;
2679
2680 do_map:
2681 map.m_len = pg_end - map.m_lblk;
2682 err = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_DEFAULT);
2683 if (err)
2684 goto clear_out;
2685
2686 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
2687 map.m_lblk = next_pgofs;
2688 goto check;
2689 }
2690
2691 set_inode_flag(inode, FI_SKIP_WRITES);
2692
2693 idx = map.m_lblk;
2694 while (idx < map.m_lblk + map.m_len &&
2695 cnt < BLKS_PER_SEG(sbi)) {
2696 struct page *page;
2697
2698 page = f2fs_get_lock_data_page(inode, idx, true);
2699 if (IS_ERR(page)) {
2700 err = PTR_ERR(page);
2701 goto clear_out;
2702 }
2703
2704 set_page_dirty(page);
2705 set_page_private_gcing(page);
2706 f2fs_put_page(page, 1);
2707
2708 idx++;
2709 cnt++;
2710 total++;
2711 }
2712
2713 map.m_lblk = idx;
2714 check:
2715 if (map.m_lblk < pg_end && cnt < BLKS_PER_SEG(sbi))
2716 goto do_map;
2717
2718 clear_inode_flag(inode, FI_SKIP_WRITES);
2719
2720 err = filemap_fdatawrite(inode->i_mapping);
2721 if (err)
2722 goto out;
2723 }
2724 clear_out:
2725 clear_inode_flag(inode, FI_SKIP_WRITES);
2726 out:
2727 clear_inode_flag(inode, FI_OPU_WRITE);
2728 unlock_out:
2729 inode_unlock(inode);
2730 if (!err)
2731 range->len = (u64)total << PAGE_SHIFT;
2732 return err;
2733 }
2734
f2fs_ioc_defragment(struct file * filp,unsigned long arg)2735 static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
2736 {
2737 struct inode *inode = file_inode(filp);
2738 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2739 struct f2fs_defragment range;
2740 int err;
2741
2742 if (!capable(CAP_SYS_ADMIN))
2743 return -EPERM;
2744
2745 if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode))
2746 return -EINVAL;
2747
2748 if (f2fs_readonly(sbi->sb))
2749 return -EROFS;
2750
2751 if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
2752 sizeof(range)))
2753 return -EFAULT;
2754
2755 /* verify alignment of offset & size */
2756 if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1))
2757 return -EINVAL;
2758
2759 if (unlikely((range.start + range.len) >> PAGE_SHIFT >
2760 max_file_blocks(inode)))
2761 return -EINVAL;
2762
2763 err = mnt_want_write_file(filp);
2764 if (err)
2765 return err;
2766
2767 err = f2fs_defragment_range(sbi, filp, &range);
2768 mnt_drop_write_file(filp);
2769
2770 f2fs_update_time(sbi, REQ_TIME);
2771 if (err < 0)
2772 return err;
2773
2774 if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
2775 sizeof(range)))
2776 return -EFAULT;
2777
2778 return 0;
2779 }
2780
f2fs_move_file_range(struct file * file_in,loff_t pos_in,struct file * file_out,loff_t pos_out,size_t len)2781 static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
2782 struct file *file_out, loff_t pos_out, size_t len)
2783 {
2784 struct inode *src = file_inode(file_in);
2785 struct inode *dst = file_inode(file_out);
2786 struct f2fs_sb_info *sbi = F2FS_I_SB(src);
2787 size_t olen = len, dst_max_i_size = 0;
2788 size_t dst_osize;
2789 int ret;
2790
2791 if (file_in->f_path.mnt != file_out->f_path.mnt ||
2792 src->i_sb != dst->i_sb)
2793 return -EXDEV;
2794
2795 if (unlikely(f2fs_readonly(src->i_sb)))
2796 return -EROFS;
2797
2798 if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
2799 return -EINVAL;
2800
2801 if (IS_ENCRYPTED(src) || IS_ENCRYPTED(dst))
2802 return -EOPNOTSUPP;
2803
2804 if (pos_out < 0 || pos_in < 0)
2805 return -EINVAL;
2806
2807 if (src == dst) {
2808 if (pos_in == pos_out)
2809 return 0;
2810 if (pos_out > pos_in && pos_out < pos_in + len)
2811 return -EINVAL;
2812 }
2813
2814 inode_lock(src);
2815 if (src != dst) {
2816 ret = -EBUSY;
2817 if (!inode_trylock(dst))
2818 goto out;
2819 }
2820
2821 if (f2fs_compressed_file(src) || f2fs_compressed_file(dst) ||
2822 f2fs_is_pinned_file(src) || f2fs_is_pinned_file(dst)) {
2823 ret = -EOPNOTSUPP;
2824 goto out_unlock;
2825 }
2826
2827 ret = -EINVAL;
2828 if (pos_in + len > src->i_size || pos_in + len < pos_in)
2829 goto out_unlock;
2830 if (len == 0)
2831 olen = len = src->i_size - pos_in;
2832 if (pos_in + len == src->i_size)
2833 len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in;
2834 if (len == 0) {
2835 ret = 0;
2836 goto out_unlock;
2837 }
2838
2839 dst_osize = dst->i_size;
2840 if (pos_out + olen > dst->i_size)
2841 dst_max_i_size = pos_out + olen;
2842
2843 /* verify the end result is block aligned */
2844 if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) ||
2845 !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) ||
2846 !IS_ALIGNED(pos_out, F2FS_BLKSIZE))
2847 goto out_unlock;
2848
2849 ret = f2fs_convert_inline_inode(src);
2850 if (ret)
2851 goto out_unlock;
2852
2853 ret = f2fs_convert_inline_inode(dst);
2854 if (ret)
2855 goto out_unlock;
2856
2857 /* write out all dirty pages from offset */
2858 ret = filemap_write_and_wait_range(src->i_mapping,
2859 pos_in, pos_in + len);
2860 if (ret)
2861 goto out_unlock;
2862
2863 ret = filemap_write_and_wait_range(dst->i_mapping,
2864 pos_out, pos_out + len);
2865 if (ret)
2866 goto out_unlock;
2867
2868 f2fs_balance_fs(sbi, true);
2869
2870 f2fs_down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2871 if (src != dst) {
2872 ret = -EBUSY;
2873 if (!f2fs_down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE]))
2874 goto out_src;
2875 }
2876
2877 f2fs_lock_op(sbi);
2878 ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
2879 pos_out >> F2FS_BLKSIZE_BITS,
2880 len >> F2FS_BLKSIZE_BITS, false);
2881
2882 if (!ret) {
2883 if (dst_max_i_size)
2884 f2fs_i_size_write(dst, dst_max_i_size);
2885 else if (dst_osize != dst->i_size)
2886 f2fs_i_size_write(dst, dst_osize);
2887 }
2888 f2fs_unlock_op(sbi);
2889
2890 if (src != dst)
2891 f2fs_up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]);
2892 out_src:
2893 f2fs_up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2894 if (ret)
2895 goto out_unlock;
2896
2897 src->i_mtime = inode_set_ctime_current(src);
2898 f2fs_mark_inode_dirty_sync(src, false);
2899 if (src != dst) {
2900 dst->i_mtime = inode_set_ctime_current(dst);
2901 f2fs_mark_inode_dirty_sync(dst, false);
2902 }
2903 f2fs_update_time(sbi, REQ_TIME);
2904
2905 out_unlock:
2906 if (src != dst)
2907 inode_unlock(dst);
2908 out:
2909 inode_unlock(src);
2910 return ret;
2911 }
2912
__f2fs_ioc_move_range(struct file * filp,struct f2fs_move_range * range)2913 static int __f2fs_ioc_move_range(struct file *filp,
2914 struct f2fs_move_range *range)
2915 {
2916 struct fd dst;
2917 int err;
2918
2919 if (!(filp->f_mode & FMODE_READ) ||
2920 !(filp->f_mode & FMODE_WRITE))
2921 return -EBADF;
2922
2923 dst = fdget(range->dst_fd);
2924 if (!dst.file)
2925 return -EBADF;
2926
2927 if (!(dst.file->f_mode & FMODE_WRITE)) {
2928 err = -EBADF;
2929 goto err_out;
2930 }
2931
2932 err = mnt_want_write_file(filp);
2933 if (err)
2934 goto err_out;
2935
2936 err = f2fs_move_file_range(filp, range->pos_in, dst.file,
2937 range->pos_out, range->len);
2938
2939 mnt_drop_write_file(filp);
2940 err_out:
2941 fdput(dst);
2942 return err;
2943 }
2944
f2fs_ioc_move_range(struct file * filp,unsigned long arg)2945 static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
2946 {
2947 struct f2fs_move_range range;
2948
2949 if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
2950 sizeof(range)))
2951 return -EFAULT;
2952 return __f2fs_ioc_move_range(filp, &range);
2953 }
2954
f2fs_ioc_flush_device(struct file * filp,unsigned long arg)2955 static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
2956 {
2957 struct inode *inode = file_inode(filp);
2958 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2959 struct sit_info *sm = SIT_I(sbi);
2960 unsigned int start_segno = 0, end_segno = 0;
2961 unsigned int dev_start_segno = 0, dev_end_segno = 0;
2962 struct f2fs_flush_device range;
2963 struct f2fs_gc_control gc_control = {
2964 .init_gc_type = FG_GC,
2965 .should_migrate_blocks = true,
2966 .err_gc_skipped = true,
2967 .nr_free_secs = 0 };
2968 int ret;
2969
2970 if (!capable(CAP_SYS_ADMIN))
2971 return -EPERM;
2972
2973 if (f2fs_readonly(sbi->sb))
2974 return -EROFS;
2975
2976 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2977 return -EINVAL;
2978
2979 if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg,
2980 sizeof(range)))
2981 return -EFAULT;
2982
2983 if (!f2fs_is_multi_device(sbi) || sbi->s_ndevs - 1 <= range.dev_num ||
2984 __is_large_section(sbi)) {
2985 f2fs_warn(sbi, "Can't flush %u in %d for SEGS_PER_SEC %u != 1",
2986 range.dev_num, sbi->s_ndevs, SEGS_PER_SEC(sbi));
2987 return -EINVAL;
2988 }
2989
2990 ret = mnt_want_write_file(filp);
2991 if (ret)
2992 return ret;
2993
2994 if (range.dev_num != 0)
2995 dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk);
2996 dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk);
2997
2998 start_segno = sm->last_victim[FLUSH_DEVICE];
2999 if (start_segno < dev_start_segno || start_segno >= dev_end_segno)
3000 start_segno = dev_start_segno;
3001 end_segno = min(start_segno + range.segments, dev_end_segno);
3002
3003 while (start_segno < end_segno) {
3004 if (!f2fs_down_write_trylock(&sbi->gc_lock)) {
3005 ret = -EBUSY;
3006 goto out;
3007 }
3008 sm->last_victim[GC_CB] = end_segno + 1;
3009 sm->last_victim[GC_GREEDY] = end_segno + 1;
3010 sm->last_victim[ALLOC_NEXT] = end_segno + 1;
3011
3012 gc_control.victim_segno = start_segno;
3013 stat_inc_gc_call_count(sbi, FOREGROUND);
3014 ret = f2fs_gc(sbi, &gc_control);
3015 if (ret == -EAGAIN)
3016 ret = 0;
3017 else if (ret < 0)
3018 break;
3019 start_segno++;
3020 }
3021 out:
3022 mnt_drop_write_file(filp);
3023 return ret;
3024 }
3025
f2fs_ioc_get_features(struct file * filp,unsigned long arg)3026 static int f2fs_ioc_get_features(struct file *filp, unsigned long arg)
3027 {
3028 struct inode *inode = file_inode(filp);
3029 u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature);
3030
3031 /* Must validate to set it with SQLite behavior in Android. */
3032 sb_feature |= F2FS_FEATURE_ATOMIC_WRITE;
3033
3034 return put_user(sb_feature, (u32 __user *)arg);
3035 }
3036
3037 #ifdef CONFIG_QUOTA
f2fs_transfer_project_quota(struct inode * inode,kprojid_t kprojid)3038 int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
3039 {
3040 struct dquot *transfer_to[MAXQUOTAS] = {};
3041 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3042 struct super_block *sb = sbi->sb;
3043 int err;
3044
3045 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
3046 if (IS_ERR(transfer_to[PRJQUOTA]))
3047 return PTR_ERR(transfer_to[PRJQUOTA]);
3048
3049 err = __dquot_transfer(inode, transfer_to);
3050 if (err)
3051 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
3052 dqput(transfer_to[PRJQUOTA]);
3053 return err;
3054 }
3055
f2fs_ioc_setproject(struct inode * inode,__u32 projid)3056 static int f2fs_ioc_setproject(struct inode *inode, __u32 projid)
3057 {
3058 struct f2fs_inode_info *fi = F2FS_I(inode);
3059 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3060 struct f2fs_inode *ri = NULL;
3061 kprojid_t kprojid;
3062 int err;
3063
3064 if (!f2fs_sb_has_project_quota(sbi)) {
3065 if (projid != F2FS_DEF_PROJID)
3066 return -EOPNOTSUPP;
3067 else
3068 return 0;
3069 }
3070
3071 if (!f2fs_has_extra_attr(inode))
3072 return -EOPNOTSUPP;
3073
3074 kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
3075
3076 if (projid_eq(kprojid, fi->i_projid))
3077 return 0;
3078
3079 err = -EPERM;
3080 /* Is it quota file? Do not allow user to mess with it */
3081 if (IS_NOQUOTA(inode))
3082 return err;
3083
3084 if (!F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
3085 return -EOVERFLOW;
3086
3087 err = f2fs_dquot_initialize(inode);
3088 if (err)
3089 return err;
3090
3091 f2fs_lock_op(sbi);
3092 err = f2fs_transfer_project_quota(inode, kprojid);
3093 if (err)
3094 goto out_unlock;
3095
3096 fi->i_projid = kprojid;
3097 inode_set_ctime_current(inode);
3098 f2fs_mark_inode_dirty_sync(inode, true);
3099 out_unlock:
3100 f2fs_unlock_op(sbi);
3101 return err;
3102 }
3103 #else
f2fs_transfer_project_quota(struct inode * inode,kprojid_t kprojid)3104 int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
3105 {
3106 return 0;
3107 }
3108
f2fs_ioc_setproject(struct inode * inode,__u32 projid)3109 static int f2fs_ioc_setproject(struct inode *inode, __u32 projid)
3110 {
3111 if (projid != F2FS_DEF_PROJID)
3112 return -EOPNOTSUPP;
3113 return 0;
3114 }
3115 #endif
3116
f2fs_fileattr_get(struct dentry * dentry,struct fileattr * fa)3117 int f2fs_fileattr_get(struct dentry *dentry, struct fileattr *fa)
3118 {
3119 struct inode *inode = d_inode(dentry);
3120 struct f2fs_inode_info *fi = F2FS_I(inode);
3121 u32 fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
3122
3123 if (IS_ENCRYPTED(inode))
3124 fsflags |= FS_ENCRYPT_FL;
3125 if (IS_VERITY(inode))
3126 fsflags |= FS_VERITY_FL;
3127 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))
3128 fsflags |= FS_INLINE_DATA_FL;
3129 if (is_inode_flag_set(inode, FI_PIN_FILE))
3130 fsflags |= FS_NOCOW_FL;
3131
3132 fileattr_fill_flags(fa, fsflags & F2FS_GETTABLE_FS_FL);
3133
3134 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)))
3135 fa->fsx_projid = from_kprojid(&init_user_ns, fi->i_projid);
3136
3137 return 0;
3138 }
3139
f2fs_fileattr_set(struct mnt_idmap * idmap,struct dentry * dentry,struct fileattr * fa)3140 int f2fs_fileattr_set(struct mnt_idmap *idmap,
3141 struct dentry *dentry, struct fileattr *fa)
3142 {
3143 struct inode *inode = d_inode(dentry);
3144 u32 fsflags = fa->flags, mask = F2FS_SETTABLE_FS_FL;
3145 u32 iflags;
3146 int err;
3147
3148 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
3149 return -EIO;
3150 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode)))
3151 return -ENOSPC;
3152 if (fsflags & ~F2FS_GETTABLE_FS_FL)
3153 return -EOPNOTSUPP;
3154 fsflags &= F2FS_SETTABLE_FS_FL;
3155 if (!fa->flags_valid)
3156 mask &= FS_COMMON_FL;
3157
3158 iflags = f2fs_fsflags_to_iflags(fsflags);
3159 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
3160 return -EOPNOTSUPP;
3161
3162 err = f2fs_setflags_common(inode, iflags, f2fs_fsflags_to_iflags(mask));
3163 if (!err)
3164 err = f2fs_ioc_setproject(inode, fa->fsx_projid);
3165
3166 return err;
3167 }
3168
f2fs_pin_file_control(struct inode * inode,bool inc)3169 int f2fs_pin_file_control(struct inode *inode, bool inc)
3170 {
3171 struct f2fs_inode_info *fi = F2FS_I(inode);
3172 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3173
3174 /* Use i_gc_failures for normal file as a risk signal. */
3175 if (inc)
3176 f2fs_i_gc_failures_write(inode,
3177 fi->i_gc_failures[GC_FAILURE_PIN] + 1);
3178
3179 if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) {
3180 f2fs_warn(sbi, "%s: Enable GC = ino %lx after %x GC trials",
3181 __func__, inode->i_ino,
3182 fi->i_gc_failures[GC_FAILURE_PIN]);
3183 clear_inode_flag(inode, FI_PIN_FILE);
3184 return -EAGAIN;
3185 }
3186 return 0;
3187 }
3188
f2fs_ioc_set_pin_file(struct file * filp,unsigned long arg)3189 static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
3190 {
3191 struct inode *inode = file_inode(filp);
3192 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3193 __u32 pin;
3194 int ret = 0;
3195
3196 if (get_user(pin, (__u32 __user *)arg))
3197 return -EFAULT;
3198
3199 if (!S_ISREG(inode->i_mode))
3200 return -EINVAL;
3201
3202 if (f2fs_readonly(sbi->sb))
3203 return -EROFS;
3204
3205 ret = mnt_want_write_file(filp);
3206 if (ret)
3207 return ret;
3208
3209 inode_lock(inode);
3210
3211 if (!pin) {
3212 clear_inode_flag(inode, FI_PIN_FILE);
3213 f2fs_i_gc_failures_write(inode, 0);
3214 goto done;
3215 } else if (f2fs_is_pinned_file(inode)) {
3216 goto done;
3217 }
3218
3219 if (f2fs_sb_has_blkzoned(sbi) && F2FS_HAS_BLOCKS(inode)) {
3220 ret = -EFBIG;
3221 goto out;
3222 }
3223
3224 /* Let's allow file pinning on zoned device. */
3225 if (!f2fs_sb_has_blkzoned(sbi) &&
3226 f2fs_should_update_outplace(inode, NULL)) {
3227 ret = -EINVAL;
3228 goto out;
3229 }
3230
3231 if (f2fs_pin_file_control(inode, false)) {
3232 ret = -EAGAIN;
3233 goto out;
3234 }
3235
3236 ret = f2fs_convert_inline_inode(inode);
3237 if (ret)
3238 goto out;
3239
3240 if (!f2fs_disable_compressed_file(inode)) {
3241 ret = -EOPNOTSUPP;
3242 goto out;
3243 }
3244
3245 set_inode_flag(inode, FI_PIN_FILE);
3246 ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
3247 done:
3248 f2fs_update_time(sbi, REQ_TIME);
3249 out:
3250 inode_unlock(inode);
3251 mnt_drop_write_file(filp);
3252 return ret;
3253 }
3254
f2fs_ioc_get_pin_file(struct file * filp,unsigned long arg)3255 static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg)
3256 {
3257 struct inode *inode = file_inode(filp);
3258 __u32 pin = 0;
3259
3260 if (is_inode_flag_set(inode, FI_PIN_FILE))
3261 pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
3262 return put_user(pin, (u32 __user *)arg);
3263 }
3264
f2fs_precache_extents(struct inode * inode)3265 int f2fs_precache_extents(struct inode *inode)
3266 {
3267 struct f2fs_inode_info *fi = F2FS_I(inode);
3268 struct f2fs_map_blocks map;
3269 pgoff_t m_next_extent;
3270 loff_t end;
3271 int err;
3272
3273 if (is_inode_flag_set(inode, FI_NO_EXTENT))
3274 return -EOPNOTSUPP;
3275
3276 map.m_lblk = 0;
3277 map.m_pblk = 0;
3278 map.m_next_pgofs = NULL;
3279 map.m_next_extent = &m_next_extent;
3280 map.m_seg_type = NO_CHECK_TYPE;
3281 map.m_may_create = false;
3282 end = max_file_blocks(inode);
3283
3284 while (map.m_lblk < end) {
3285 map.m_len = end - map.m_lblk;
3286
3287 f2fs_down_write(&fi->i_gc_rwsem[WRITE]);
3288 err = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_PRECACHE);
3289 f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
3290 if (err)
3291 return err;
3292
3293 map.m_lblk = m_next_extent;
3294 }
3295
3296 return 0;
3297 }
3298
f2fs_ioc_precache_extents(struct file * filp)3299 static int f2fs_ioc_precache_extents(struct file *filp)
3300 {
3301 return f2fs_precache_extents(file_inode(filp));
3302 }
3303
f2fs_ioc_resize_fs(struct file * filp,unsigned long arg)3304 static int f2fs_ioc_resize_fs(struct file *filp, unsigned long arg)
3305 {
3306 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
3307 __u64 block_count;
3308
3309 if (!capable(CAP_SYS_ADMIN))
3310 return -EPERM;
3311
3312 if (f2fs_readonly(sbi->sb))
3313 return -EROFS;
3314
3315 if (copy_from_user(&block_count, (void __user *)arg,
3316 sizeof(block_count)))
3317 return -EFAULT;
3318
3319 return f2fs_resize_fs(filp, block_count);
3320 }
3321
f2fs_ioc_enable_verity(struct file * filp,unsigned long arg)3322 static int f2fs_ioc_enable_verity(struct file *filp, unsigned long arg)
3323 {
3324 struct inode *inode = file_inode(filp);
3325
3326 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3327
3328 if (!f2fs_sb_has_verity(F2FS_I_SB(inode))) {
3329 f2fs_warn(F2FS_I_SB(inode),
3330 "Can't enable fs-verity on inode %lu: the verity feature is not enabled on this filesystem",
3331 inode->i_ino);
3332 return -EOPNOTSUPP;
3333 }
3334
3335 return fsverity_ioctl_enable(filp, (const void __user *)arg);
3336 }
3337
f2fs_ioc_measure_verity(struct file * filp,unsigned long arg)3338 static int f2fs_ioc_measure_verity(struct file *filp, unsigned long arg)
3339 {
3340 if (!f2fs_sb_has_verity(F2FS_I_SB(file_inode(filp))))
3341 return -EOPNOTSUPP;
3342
3343 return fsverity_ioctl_measure(filp, (void __user *)arg);
3344 }
3345
f2fs_ioc_read_verity_metadata(struct file * filp,unsigned long arg)3346 static int f2fs_ioc_read_verity_metadata(struct file *filp, unsigned long arg)
3347 {
3348 if (!f2fs_sb_has_verity(F2FS_I_SB(file_inode(filp))))
3349 return -EOPNOTSUPP;
3350
3351 return fsverity_ioctl_read_metadata(filp, (const void __user *)arg);
3352 }
3353
f2fs_ioc_getfslabel(struct file * filp,unsigned long arg)3354 static int f2fs_ioc_getfslabel(struct file *filp, unsigned long arg)
3355 {
3356 struct inode *inode = file_inode(filp);
3357 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3358 char *vbuf;
3359 int count;
3360 int err = 0;
3361
3362 vbuf = f2fs_kzalloc(sbi, MAX_VOLUME_NAME, GFP_KERNEL);
3363 if (!vbuf)
3364 return -ENOMEM;
3365
3366 f2fs_down_read(&sbi->sb_lock);
3367 count = utf16s_to_utf8s(sbi->raw_super->volume_name,
3368 ARRAY_SIZE(sbi->raw_super->volume_name),
3369 UTF16_LITTLE_ENDIAN, vbuf, MAX_VOLUME_NAME);
3370 f2fs_up_read(&sbi->sb_lock);
3371
3372 if (copy_to_user((char __user *)arg, vbuf,
3373 min(FSLABEL_MAX, count)))
3374 err = -EFAULT;
3375
3376 kfree(vbuf);
3377 return err;
3378 }
3379
f2fs_ioc_setfslabel(struct file * filp,unsigned long arg)3380 static int f2fs_ioc_setfslabel(struct file *filp, unsigned long arg)
3381 {
3382 struct inode *inode = file_inode(filp);
3383 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3384 char *vbuf;
3385 int err = 0;
3386
3387 if (!capable(CAP_SYS_ADMIN))
3388 return -EPERM;
3389
3390 vbuf = strndup_user((const char __user *)arg, FSLABEL_MAX);
3391 if (IS_ERR(vbuf))
3392 return PTR_ERR(vbuf);
3393
3394 err = mnt_want_write_file(filp);
3395 if (err)
3396 goto out;
3397
3398 f2fs_down_write(&sbi->sb_lock);
3399
3400 memset(sbi->raw_super->volume_name, 0,
3401 sizeof(sbi->raw_super->volume_name));
3402 utf8s_to_utf16s(vbuf, strlen(vbuf), UTF16_LITTLE_ENDIAN,
3403 sbi->raw_super->volume_name,
3404 ARRAY_SIZE(sbi->raw_super->volume_name));
3405
3406 err = f2fs_commit_super(sbi, false);
3407
3408 f2fs_up_write(&sbi->sb_lock);
3409
3410 mnt_drop_write_file(filp);
3411 out:
3412 kfree(vbuf);
3413 return err;
3414 }
3415
f2fs_get_compress_blocks(struct inode * inode,__u64 * blocks)3416 static int f2fs_get_compress_blocks(struct inode *inode, __u64 *blocks)
3417 {
3418 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3419 return -EOPNOTSUPP;
3420
3421 if (!f2fs_compressed_file(inode))
3422 return -EINVAL;
3423
3424 *blocks = atomic_read(&F2FS_I(inode)->i_compr_blocks);
3425
3426 return 0;
3427 }
3428
f2fs_ioc_get_compress_blocks(struct file * filp,unsigned long arg)3429 static int f2fs_ioc_get_compress_blocks(struct file *filp, unsigned long arg)
3430 {
3431 struct inode *inode = file_inode(filp);
3432 __u64 blocks;
3433 int ret;
3434
3435 ret = f2fs_get_compress_blocks(inode, &blocks);
3436 if (ret < 0)
3437 return ret;
3438
3439 return put_user(blocks, (u64 __user *)arg);
3440 }
3441
release_compress_blocks(struct dnode_of_data * dn,pgoff_t count)3442 static int release_compress_blocks(struct dnode_of_data *dn, pgoff_t count)
3443 {
3444 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
3445 unsigned int released_blocks = 0;
3446 int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
3447 block_t blkaddr;
3448 int i;
3449
3450 for (i = 0; i < count; i++) {
3451 blkaddr = data_blkaddr(dn->inode, dn->node_page,
3452 dn->ofs_in_node + i);
3453
3454 if (!__is_valid_data_blkaddr(blkaddr))
3455 continue;
3456 if (unlikely(!f2fs_is_valid_blkaddr(sbi, blkaddr,
3457 DATA_GENERIC_ENHANCE))) {
3458 f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
3459 return -EFSCORRUPTED;
3460 }
3461 }
3462
3463 while (count) {
3464 int compr_blocks = 0;
3465
3466 for (i = 0; i < cluster_size; i++, dn->ofs_in_node++) {
3467 blkaddr = f2fs_data_blkaddr(dn);
3468
3469 if (i == 0) {
3470 if (blkaddr == COMPRESS_ADDR)
3471 continue;
3472 dn->ofs_in_node += cluster_size;
3473 goto next;
3474 }
3475
3476 if (__is_valid_data_blkaddr(blkaddr))
3477 compr_blocks++;
3478
3479 if (blkaddr != NEW_ADDR)
3480 continue;
3481
3482 f2fs_set_data_blkaddr(dn, NULL_ADDR);
3483 }
3484
3485 f2fs_i_compr_blocks_update(dn->inode, compr_blocks, false);
3486 dec_valid_block_count(sbi, dn->inode,
3487 cluster_size - compr_blocks);
3488
3489 released_blocks += cluster_size - compr_blocks;
3490 next:
3491 count -= cluster_size;
3492 }
3493
3494 return released_blocks;
3495 }
3496
f2fs_release_compress_blocks(struct file * filp,unsigned long arg)3497 static int f2fs_release_compress_blocks(struct file *filp, unsigned long arg)
3498 {
3499 struct inode *inode = file_inode(filp);
3500 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3501 pgoff_t page_idx = 0, last_idx;
3502 unsigned int released_blocks = 0;
3503 int ret;
3504 int writecount;
3505
3506 if (!f2fs_sb_has_compression(sbi))
3507 return -EOPNOTSUPP;
3508
3509 if (f2fs_readonly(sbi->sb))
3510 return -EROFS;
3511
3512 ret = mnt_want_write_file(filp);
3513 if (ret)
3514 return ret;
3515
3516 f2fs_balance_fs(sbi, true);
3517
3518 inode_lock(inode);
3519
3520 writecount = atomic_read(&inode->i_writecount);
3521 if ((filp->f_mode & FMODE_WRITE && writecount != 1) ||
3522 (!(filp->f_mode & FMODE_WRITE) && writecount)) {
3523 ret = -EBUSY;
3524 goto out;
3525 }
3526
3527 if (!f2fs_compressed_file(inode) ||
3528 is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) {
3529 ret = -EINVAL;
3530 goto out;
3531 }
3532
3533 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
3534 if (ret)
3535 goto out;
3536
3537 if (!atomic_read(&F2FS_I(inode)->i_compr_blocks)) {
3538 ret = -EPERM;
3539 goto out;
3540 }
3541
3542 set_inode_flag(inode, FI_COMPRESS_RELEASED);
3543 inode_set_ctime_current(inode);
3544 f2fs_mark_inode_dirty_sync(inode, true);
3545
3546 f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3547 filemap_invalidate_lock(inode->i_mapping);
3548
3549 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
3550
3551 while (page_idx < last_idx) {
3552 struct dnode_of_data dn;
3553 pgoff_t end_offset, count;
3554
3555 f2fs_lock_op(sbi);
3556
3557 set_new_dnode(&dn, inode, NULL, NULL, 0);
3558 ret = f2fs_get_dnode_of_data(&dn, page_idx, LOOKUP_NODE);
3559 if (ret) {
3560 f2fs_unlock_op(sbi);
3561 if (ret == -ENOENT) {
3562 page_idx = f2fs_get_next_page_offset(&dn,
3563 page_idx);
3564 ret = 0;
3565 continue;
3566 }
3567 break;
3568 }
3569
3570 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3571 count = min(end_offset - dn.ofs_in_node, last_idx - page_idx);
3572 count = round_up(count, F2FS_I(inode)->i_cluster_size);
3573
3574 ret = release_compress_blocks(&dn, count);
3575
3576 f2fs_put_dnode(&dn);
3577
3578 f2fs_unlock_op(sbi);
3579
3580 if (ret < 0)
3581 break;
3582
3583 page_idx += count;
3584 released_blocks += ret;
3585 }
3586
3587 filemap_invalidate_unlock(inode->i_mapping);
3588 f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3589 out:
3590 inode_unlock(inode);
3591
3592 mnt_drop_write_file(filp);
3593
3594 if (ret >= 0) {
3595 ret = put_user(released_blocks, (u64 __user *)arg);
3596 } else if (released_blocks &&
3597 atomic_read(&F2FS_I(inode)->i_compr_blocks)) {
3598 set_sbi_flag(sbi, SBI_NEED_FSCK);
3599 f2fs_warn(sbi, "%s: partial blocks were released i_ino=%lx "
3600 "iblocks=%llu, released=%u, compr_blocks=%u, "
3601 "run fsck to fix.",
3602 __func__, inode->i_ino, inode->i_blocks,
3603 released_blocks,
3604 atomic_read(&F2FS_I(inode)->i_compr_blocks));
3605 }
3606
3607 return ret;
3608 }
3609
reserve_compress_blocks(struct dnode_of_data * dn,pgoff_t count,unsigned int * reserved_blocks)3610 static int reserve_compress_blocks(struct dnode_of_data *dn, pgoff_t count,
3611 unsigned int *reserved_blocks)
3612 {
3613 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
3614 int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
3615 block_t blkaddr;
3616 int i;
3617
3618 for (i = 0; i < count; i++) {
3619 blkaddr = data_blkaddr(dn->inode, dn->node_page,
3620 dn->ofs_in_node + i);
3621
3622 if (!__is_valid_data_blkaddr(blkaddr))
3623 continue;
3624 if (unlikely(!f2fs_is_valid_blkaddr(sbi, blkaddr,
3625 DATA_GENERIC_ENHANCE))) {
3626 f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
3627 return -EFSCORRUPTED;
3628 }
3629 }
3630
3631 while (count) {
3632 int compr_blocks = 0;
3633 blkcnt_t reserved = 0;
3634 blkcnt_t to_reserved;
3635 int ret;
3636
3637 for (i = 0; i < cluster_size; i++) {
3638 blkaddr = data_blkaddr(dn->inode, dn->node_page,
3639 dn->ofs_in_node + i);
3640
3641 if (i == 0) {
3642 if (blkaddr != COMPRESS_ADDR) {
3643 dn->ofs_in_node += cluster_size;
3644 goto next;
3645 }
3646 continue;
3647 }
3648
3649 /*
3650 * compressed cluster was not released due to it
3651 * fails in release_compress_blocks(), so NEW_ADDR
3652 * is a possible case.
3653 */
3654 if (blkaddr == NEW_ADDR) {
3655 reserved++;
3656 continue;
3657 }
3658 if (__is_valid_data_blkaddr(blkaddr)) {
3659 compr_blocks++;
3660 continue;
3661 }
3662 }
3663
3664 to_reserved = cluster_size - compr_blocks - reserved;
3665
3666 /* for the case all blocks in cluster were reserved */
3667 if (to_reserved == 1) {
3668 dn->ofs_in_node += cluster_size;
3669 goto next;
3670 }
3671
3672 ret = inc_valid_block_count(sbi, dn->inode,
3673 &to_reserved, false);
3674 if (unlikely(ret))
3675 return ret;
3676
3677 for (i = 0; i < cluster_size; i++, dn->ofs_in_node++) {
3678 if (f2fs_data_blkaddr(dn) == NULL_ADDR)
3679 f2fs_set_data_blkaddr(dn, NEW_ADDR);
3680 }
3681
3682 f2fs_i_compr_blocks_update(dn->inode, compr_blocks, true);
3683
3684 *reserved_blocks += to_reserved;
3685 next:
3686 count -= cluster_size;
3687 }
3688
3689 return 0;
3690 }
3691
f2fs_reserve_compress_blocks(struct file * filp,unsigned long arg)3692 static int f2fs_reserve_compress_blocks(struct file *filp, unsigned long arg)
3693 {
3694 struct inode *inode = file_inode(filp);
3695 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3696 pgoff_t page_idx = 0, last_idx;
3697 unsigned int reserved_blocks = 0;
3698 int ret;
3699
3700 if (!f2fs_sb_has_compression(sbi))
3701 return -EOPNOTSUPP;
3702
3703 if (f2fs_readonly(sbi->sb))
3704 return -EROFS;
3705
3706 ret = mnt_want_write_file(filp);
3707 if (ret)
3708 return ret;
3709
3710 f2fs_balance_fs(sbi, true);
3711
3712 inode_lock(inode);
3713
3714 if (!f2fs_compressed_file(inode) ||
3715 !is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) {
3716 ret = -EINVAL;
3717 goto unlock_inode;
3718 }
3719
3720 if (atomic_read(&F2FS_I(inode)->i_compr_blocks))
3721 goto unlock_inode;
3722
3723 f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3724 filemap_invalidate_lock(inode->i_mapping);
3725
3726 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
3727
3728 while (page_idx < last_idx) {
3729 struct dnode_of_data dn;
3730 pgoff_t end_offset, count;
3731
3732 f2fs_lock_op(sbi);
3733
3734 set_new_dnode(&dn, inode, NULL, NULL, 0);
3735 ret = f2fs_get_dnode_of_data(&dn, page_idx, LOOKUP_NODE);
3736 if (ret) {
3737 f2fs_unlock_op(sbi);
3738 if (ret == -ENOENT) {
3739 page_idx = f2fs_get_next_page_offset(&dn,
3740 page_idx);
3741 ret = 0;
3742 continue;
3743 }
3744 break;
3745 }
3746
3747 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3748 count = min(end_offset - dn.ofs_in_node, last_idx - page_idx);
3749 count = round_up(count, F2FS_I(inode)->i_cluster_size);
3750
3751 ret = reserve_compress_blocks(&dn, count, &reserved_blocks);
3752
3753 f2fs_put_dnode(&dn);
3754
3755 f2fs_unlock_op(sbi);
3756
3757 if (ret < 0)
3758 break;
3759
3760 page_idx += count;
3761 }
3762
3763 filemap_invalidate_unlock(inode->i_mapping);
3764 f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3765
3766 if (!ret) {
3767 clear_inode_flag(inode, FI_COMPRESS_RELEASED);
3768 inode_set_ctime_current(inode);
3769 f2fs_mark_inode_dirty_sync(inode, true);
3770 }
3771 unlock_inode:
3772 inode_unlock(inode);
3773 mnt_drop_write_file(filp);
3774
3775 if (!ret) {
3776 ret = put_user(reserved_blocks, (u64 __user *)arg);
3777 } else if (reserved_blocks &&
3778 atomic_read(&F2FS_I(inode)->i_compr_blocks)) {
3779 set_sbi_flag(sbi, SBI_NEED_FSCK);
3780 f2fs_warn(sbi, "%s: partial blocks were released i_ino=%lx "
3781 "iblocks=%llu, reserved=%u, compr_blocks=%u, "
3782 "run fsck to fix.",
3783 __func__, inode->i_ino, inode->i_blocks,
3784 reserved_blocks,
3785 atomic_read(&F2FS_I(inode)->i_compr_blocks));
3786 }
3787
3788 return ret;
3789 }
3790
f2fs_secure_erase(struct block_device * bdev,struct inode * inode,pgoff_t off,block_t block,block_t len,u32 flags)3791 static int f2fs_secure_erase(struct block_device *bdev, struct inode *inode,
3792 pgoff_t off, block_t block, block_t len, u32 flags)
3793 {
3794 sector_t sector = SECTOR_FROM_BLOCK(block);
3795 sector_t nr_sects = SECTOR_FROM_BLOCK(len);
3796 int ret = 0;
3797
3798 if (flags & F2FS_TRIM_FILE_DISCARD) {
3799 if (bdev_max_secure_erase_sectors(bdev))
3800 ret = blkdev_issue_secure_erase(bdev, sector, nr_sects,
3801 GFP_NOFS);
3802 else
3803 ret = blkdev_issue_discard(bdev, sector, nr_sects,
3804 GFP_NOFS);
3805 }
3806
3807 if (!ret && (flags & F2FS_TRIM_FILE_ZEROOUT)) {
3808 if (IS_ENCRYPTED(inode))
3809 ret = fscrypt_zeroout_range(inode, off, block, len);
3810 else
3811 ret = blkdev_issue_zeroout(bdev, sector, nr_sects,
3812 GFP_NOFS, 0);
3813 }
3814
3815 return ret;
3816 }
3817
f2fs_sec_trim_file(struct file * filp,unsigned long arg)3818 static int f2fs_sec_trim_file(struct file *filp, unsigned long arg)
3819 {
3820 struct inode *inode = file_inode(filp);
3821 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3822 struct address_space *mapping = inode->i_mapping;
3823 struct block_device *prev_bdev = NULL;
3824 struct f2fs_sectrim_range range;
3825 pgoff_t index, pg_end, prev_index = 0;
3826 block_t prev_block = 0, len = 0;
3827 loff_t end_addr;
3828 bool to_end = false;
3829 int ret = 0;
3830
3831 if (!(filp->f_mode & FMODE_WRITE))
3832 return -EBADF;
3833
3834 if (copy_from_user(&range, (struct f2fs_sectrim_range __user *)arg,
3835 sizeof(range)))
3836 return -EFAULT;
3837
3838 if (range.flags == 0 || (range.flags & ~F2FS_TRIM_FILE_MASK) ||
3839 !S_ISREG(inode->i_mode))
3840 return -EINVAL;
3841
3842 if (((range.flags & F2FS_TRIM_FILE_DISCARD) &&
3843 !f2fs_hw_support_discard(sbi)) ||
3844 ((range.flags & F2FS_TRIM_FILE_ZEROOUT) &&
3845 IS_ENCRYPTED(inode) && f2fs_is_multi_device(sbi)))
3846 return -EOPNOTSUPP;
3847
3848 file_start_write(filp);
3849 inode_lock(inode);
3850
3851 if (f2fs_is_atomic_file(inode) || f2fs_compressed_file(inode) ||
3852 range.start >= inode->i_size) {
3853 ret = -EINVAL;
3854 goto err;
3855 }
3856
3857 if (range.len == 0)
3858 goto err;
3859
3860 if (inode->i_size - range.start > range.len) {
3861 end_addr = range.start + range.len;
3862 } else {
3863 end_addr = range.len == (u64)-1 ?
3864 sbi->sb->s_maxbytes : inode->i_size;
3865 to_end = true;
3866 }
3867
3868 if (!IS_ALIGNED(range.start, F2FS_BLKSIZE) ||
3869 (!to_end && !IS_ALIGNED(end_addr, F2FS_BLKSIZE))) {
3870 ret = -EINVAL;
3871 goto err;
3872 }
3873
3874 index = F2FS_BYTES_TO_BLK(range.start);
3875 pg_end = DIV_ROUND_UP(end_addr, F2FS_BLKSIZE);
3876
3877 ret = f2fs_convert_inline_inode(inode);
3878 if (ret)
3879 goto err;
3880
3881 f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3882 filemap_invalidate_lock(mapping);
3883
3884 ret = filemap_write_and_wait_range(mapping, range.start,
3885 to_end ? LLONG_MAX : end_addr - 1);
3886 if (ret)
3887 goto out;
3888
3889 truncate_inode_pages_range(mapping, range.start,
3890 to_end ? -1 : end_addr - 1);
3891
3892 while (index < pg_end) {
3893 struct dnode_of_data dn;
3894 pgoff_t end_offset, count;
3895 int i;
3896
3897 set_new_dnode(&dn, inode, NULL, NULL, 0);
3898 ret = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE);
3899 if (ret) {
3900 if (ret == -ENOENT) {
3901 index = f2fs_get_next_page_offset(&dn, index);
3902 continue;
3903 }
3904 goto out;
3905 }
3906
3907 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3908 count = min(end_offset - dn.ofs_in_node, pg_end - index);
3909 for (i = 0; i < count; i++, index++, dn.ofs_in_node++) {
3910 struct block_device *cur_bdev;
3911 block_t blkaddr = f2fs_data_blkaddr(&dn);
3912
3913 if (!__is_valid_data_blkaddr(blkaddr))
3914 continue;
3915
3916 if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
3917 DATA_GENERIC_ENHANCE)) {
3918 ret = -EFSCORRUPTED;
3919 f2fs_put_dnode(&dn);
3920 f2fs_handle_error(sbi,
3921 ERROR_INVALID_BLKADDR);
3922 goto out;
3923 }
3924
3925 cur_bdev = f2fs_target_device(sbi, blkaddr, NULL);
3926 if (f2fs_is_multi_device(sbi)) {
3927 int di = f2fs_target_device_index(sbi, blkaddr);
3928
3929 blkaddr -= FDEV(di).start_blk;
3930 }
3931
3932 if (len) {
3933 if (prev_bdev == cur_bdev &&
3934 index == prev_index + len &&
3935 blkaddr == prev_block + len) {
3936 len++;
3937 } else {
3938 ret = f2fs_secure_erase(prev_bdev,
3939 inode, prev_index, prev_block,
3940 len, range.flags);
3941 if (ret) {
3942 f2fs_put_dnode(&dn);
3943 goto out;
3944 }
3945
3946 len = 0;
3947 }
3948 }
3949
3950 if (!len) {
3951 prev_bdev = cur_bdev;
3952 prev_index = index;
3953 prev_block = blkaddr;
3954 len = 1;
3955 }
3956 }
3957
3958 f2fs_put_dnode(&dn);
3959
3960 if (fatal_signal_pending(current)) {
3961 ret = -EINTR;
3962 goto out;
3963 }
3964 cond_resched();
3965 }
3966
3967 if (len)
3968 ret = f2fs_secure_erase(prev_bdev, inode, prev_index,
3969 prev_block, len, range.flags);
3970 out:
3971 filemap_invalidate_unlock(mapping);
3972 f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3973 err:
3974 inode_unlock(inode);
3975 file_end_write(filp);
3976
3977 return ret;
3978 }
3979
f2fs_ioc_get_compress_option(struct file * filp,unsigned long arg)3980 static int f2fs_ioc_get_compress_option(struct file *filp, unsigned long arg)
3981 {
3982 struct inode *inode = file_inode(filp);
3983 struct f2fs_comp_option option;
3984
3985 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3986 return -EOPNOTSUPP;
3987
3988 inode_lock_shared(inode);
3989
3990 if (!f2fs_compressed_file(inode)) {
3991 inode_unlock_shared(inode);
3992 return -ENODATA;
3993 }
3994
3995 option.algorithm = F2FS_I(inode)->i_compress_algorithm;
3996 option.log_cluster_size = F2FS_I(inode)->i_log_cluster_size;
3997
3998 inode_unlock_shared(inode);
3999
4000 if (copy_to_user((struct f2fs_comp_option __user *)arg, &option,
4001 sizeof(option)))
4002 return -EFAULT;
4003
4004 return 0;
4005 }
4006
f2fs_ioc_set_compress_option(struct file * filp,unsigned long arg)4007 static int f2fs_ioc_set_compress_option(struct file *filp, unsigned long arg)
4008 {
4009 struct inode *inode = file_inode(filp);
4010 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4011 struct f2fs_comp_option option;
4012 int ret = 0;
4013
4014 if (!f2fs_sb_has_compression(sbi))
4015 return -EOPNOTSUPP;
4016
4017 if (!(filp->f_mode & FMODE_WRITE))
4018 return -EBADF;
4019
4020 if (copy_from_user(&option, (struct f2fs_comp_option __user *)arg,
4021 sizeof(option)))
4022 return -EFAULT;
4023
4024 if (option.log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
4025 option.log_cluster_size > MAX_COMPRESS_LOG_SIZE ||
4026 option.algorithm >= COMPRESS_MAX)
4027 return -EINVAL;
4028
4029 file_start_write(filp);
4030 inode_lock(inode);
4031
4032 f2fs_down_write(&F2FS_I(inode)->i_sem);
4033 if (!f2fs_compressed_file(inode)) {
4034 ret = -EINVAL;
4035 goto out;
4036 }
4037
4038 if (f2fs_is_mmap_file(inode) || get_dirty_pages(inode)) {
4039 ret = -EBUSY;
4040 goto out;
4041 }
4042
4043 if (F2FS_HAS_BLOCKS(inode)) {
4044 ret = -EFBIG;
4045 goto out;
4046 }
4047
4048 F2FS_I(inode)->i_compress_algorithm = option.algorithm;
4049 F2FS_I(inode)->i_log_cluster_size = option.log_cluster_size;
4050 F2FS_I(inode)->i_cluster_size = BIT(option.log_cluster_size);
4051 /* Set default level */
4052 if (F2FS_I(inode)->i_compress_algorithm == COMPRESS_ZSTD)
4053 F2FS_I(inode)->i_compress_level = F2FS_ZSTD_DEFAULT_CLEVEL;
4054 else
4055 F2FS_I(inode)->i_compress_level = 0;
4056 /* Adjust mount option level */
4057 if (option.algorithm == F2FS_OPTION(sbi).compress_algorithm &&
4058 F2FS_OPTION(sbi).compress_level)
4059 F2FS_I(inode)->i_compress_level = F2FS_OPTION(sbi).compress_level;
4060 f2fs_mark_inode_dirty_sync(inode, true);
4061
4062 if (!f2fs_is_compress_backend_ready(inode))
4063 f2fs_warn(sbi, "compression algorithm is successfully set, "
4064 "but current kernel doesn't support this algorithm.");
4065 out:
4066 f2fs_up_write(&F2FS_I(inode)->i_sem);
4067 inode_unlock(inode);
4068 file_end_write(filp);
4069
4070 return ret;
4071 }
4072
redirty_blocks(struct inode * inode,pgoff_t page_idx,int len)4073 static int redirty_blocks(struct inode *inode, pgoff_t page_idx, int len)
4074 {
4075 DEFINE_READAHEAD(ractl, NULL, NULL, inode->i_mapping, page_idx);
4076 struct address_space *mapping = inode->i_mapping;
4077 struct page *page;
4078 pgoff_t redirty_idx = page_idx;
4079 int i, page_len = 0, ret = 0;
4080
4081 page_cache_ra_unbounded(&ractl, len, 0);
4082
4083 for (i = 0; i < len; i++, page_idx++) {
4084 page = read_cache_page(mapping, page_idx, NULL, NULL);
4085 if (IS_ERR(page)) {
4086 ret = PTR_ERR(page);
4087 break;
4088 }
4089 page_len++;
4090 }
4091
4092 for (i = 0; i < page_len; i++, redirty_idx++) {
4093 page = find_lock_page(mapping, redirty_idx);
4094
4095 /* It will never fail, when page has pinned above */
4096 f2fs_bug_on(F2FS_I_SB(inode), !page);
4097
4098 set_page_dirty(page);
4099 set_page_private_gcing(page);
4100 f2fs_put_page(page, 1);
4101 f2fs_put_page(page, 0);
4102 }
4103
4104 return ret;
4105 }
4106
f2fs_ioc_decompress_file(struct file * filp)4107 static int f2fs_ioc_decompress_file(struct file *filp)
4108 {
4109 struct inode *inode = file_inode(filp);
4110 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4111 struct f2fs_inode_info *fi = F2FS_I(inode);
4112 pgoff_t page_idx = 0, last_idx;
4113 int cluster_size = fi->i_cluster_size;
4114 int count, ret;
4115
4116 if (!f2fs_sb_has_compression(sbi) ||
4117 F2FS_OPTION(sbi).compress_mode != COMPR_MODE_USER)
4118 return -EOPNOTSUPP;
4119
4120 if (!(filp->f_mode & FMODE_WRITE))
4121 return -EBADF;
4122
4123 f2fs_balance_fs(sbi, true);
4124
4125 file_start_write(filp);
4126 inode_lock(inode);
4127
4128 if (!f2fs_is_compress_backend_ready(inode)) {
4129 ret = -EOPNOTSUPP;
4130 goto out;
4131 }
4132
4133 if (!f2fs_compressed_file(inode) ||
4134 is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) {
4135 ret = -EINVAL;
4136 goto out;
4137 }
4138
4139 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
4140 if (ret)
4141 goto out;
4142
4143 if (!atomic_read(&fi->i_compr_blocks))
4144 goto out;
4145
4146 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
4147
4148 count = last_idx - page_idx;
4149 while (count && count >= cluster_size) {
4150 ret = redirty_blocks(inode, page_idx, cluster_size);
4151 if (ret < 0)
4152 break;
4153
4154 if (get_dirty_pages(inode) >= BLKS_PER_SEG(sbi)) {
4155 ret = filemap_fdatawrite(inode->i_mapping);
4156 if (ret < 0)
4157 break;
4158 }
4159
4160 count -= cluster_size;
4161 page_idx += cluster_size;
4162
4163 cond_resched();
4164 if (fatal_signal_pending(current)) {
4165 ret = -EINTR;
4166 break;
4167 }
4168 }
4169
4170 if (!ret)
4171 ret = filemap_write_and_wait_range(inode->i_mapping, 0,
4172 LLONG_MAX);
4173
4174 if (ret)
4175 f2fs_warn(sbi, "%s: The file might be partially decompressed (errno=%d). Please delete the file.",
4176 __func__, ret);
4177 out:
4178 inode_unlock(inode);
4179 file_end_write(filp);
4180
4181 return ret;
4182 }
4183
f2fs_ioc_compress_file(struct file * filp)4184 static int f2fs_ioc_compress_file(struct file *filp)
4185 {
4186 struct inode *inode = file_inode(filp);
4187 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4188 pgoff_t page_idx = 0, last_idx;
4189 int cluster_size = F2FS_I(inode)->i_cluster_size;
4190 int count, ret;
4191
4192 if (!f2fs_sb_has_compression(sbi) ||
4193 F2FS_OPTION(sbi).compress_mode != COMPR_MODE_USER)
4194 return -EOPNOTSUPP;
4195
4196 if (!(filp->f_mode & FMODE_WRITE))
4197 return -EBADF;
4198
4199 f2fs_balance_fs(sbi, true);
4200
4201 file_start_write(filp);
4202 inode_lock(inode);
4203
4204 if (!f2fs_is_compress_backend_ready(inode)) {
4205 ret = -EOPNOTSUPP;
4206 goto out;
4207 }
4208
4209 if (!f2fs_compressed_file(inode) ||
4210 is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) {
4211 ret = -EINVAL;
4212 goto out;
4213 }
4214
4215 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
4216 if (ret)
4217 goto out;
4218
4219 set_inode_flag(inode, FI_ENABLE_COMPRESS);
4220
4221 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
4222
4223 count = last_idx - page_idx;
4224 while (count && count >= cluster_size) {
4225 ret = redirty_blocks(inode, page_idx, cluster_size);
4226 if (ret < 0)
4227 break;
4228
4229 if (get_dirty_pages(inode) >= BLKS_PER_SEG(sbi)) {
4230 ret = filemap_fdatawrite(inode->i_mapping);
4231 if (ret < 0)
4232 break;
4233 }
4234
4235 count -= cluster_size;
4236 page_idx += cluster_size;
4237
4238 cond_resched();
4239 if (fatal_signal_pending(current)) {
4240 ret = -EINTR;
4241 break;
4242 }
4243 }
4244
4245 if (!ret)
4246 ret = filemap_write_and_wait_range(inode->i_mapping, 0,
4247 LLONG_MAX);
4248
4249 clear_inode_flag(inode, FI_ENABLE_COMPRESS);
4250
4251 if (ret)
4252 f2fs_warn(sbi, "%s: The file might be partially compressed (errno=%d). Please delete the file.",
4253 __func__, ret);
4254 out:
4255 inode_unlock(inode);
4256 file_end_write(filp);
4257
4258 return ret;
4259 }
4260
__f2fs_ioctl(struct file * filp,unsigned int cmd,unsigned long arg)4261 static long __f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
4262 {
4263 switch (cmd) {
4264 case FS_IOC_GETVERSION:
4265 return f2fs_ioc_getversion(filp, arg);
4266 case F2FS_IOC_START_ATOMIC_WRITE:
4267 return f2fs_ioc_start_atomic_write(filp, false);
4268 case F2FS_IOC_START_ATOMIC_REPLACE:
4269 return f2fs_ioc_start_atomic_write(filp, true);
4270 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
4271 return f2fs_ioc_commit_atomic_write(filp);
4272 case F2FS_IOC_ABORT_ATOMIC_WRITE:
4273 return f2fs_ioc_abort_atomic_write(filp);
4274 case F2FS_IOC_START_VOLATILE_WRITE:
4275 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
4276 return -EOPNOTSUPP;
4277 case F2FS_IOC_SHUTDOWN:
4278 return f2fs_ioc_shutdown(filp, arg);
4279 case FITRIM:
4280 return f2fs_ioc_fitrim(filp, arg);
4281 case FS_IOC_SET_ENCRYPTION_POLICY:
4282 return f2fs_ioc_set_encryption_policy(filp, arg);
4283 case FS_IOC_GET_ENCRYPTION_POLICY:
4284 return f2fs_ioc_get_encryption_policy(filp, arg);
4285 case FS_IOC_GET_ENCRYPTION_PWSALT:
4286 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
4287 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
4288 return f2fs_ioc_get_encryption_policy_ex(filp, arg);
4289 case FS_IOC_ADD_ENCRYPTION_KEY:
4290 return f2fs_ioc_add_encryption_key(filp, arg);
4291 case FS_IOC_REMOVE_ENCRYPTION_KEY:
4292 return f2fs_ioc_remove_encryption_key(filp, arg);
4293 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
4294 return f2fs_ioc_remove_encryption_key_all_users(filp, arg);
4295 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
4296 return f2fs_ioc_get_encryption_key_status(filp, arg);
4297 case FS_IOC_GET_ENCRYPTION_NONCE:
4298 return f2fs_ioc_get_encryption_nonce(filp, arg);
4299 case F2FS_IOC_GARBAGE_COLLECT:
4300 return f2fs_ioc_gc(filp, arg);
4301 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
4302 return f2fs_ioc_gc_range(filp, arg);
4303 case F2FS_IOC_WRITE_CHECKPOINT:
4304 return f2fs_ioc_write_checkpoint(filp);
4305 case F2FS_IOC_DEFRAGMENT:
4306 return f2fs_ioc_defragment(filp, arg);
4307 case F2FS_IOC_MOVE_RANGE:
4308 return f2fs_ioc_move_range(filp, arg);
4309 case F2FS_IOC_FLUSH_DEVICE:
4310 return f2fs_ioc_flush_device(filp, arg);
4311 case F2FS_IOC_GET_FEATURES:
4312 return f2fs_ioc_get_features(filp, arg);
4313 case F2FS_IOC_GET_PIN_FILE:
4314 return f2fs_ioc_get_pin_file(filp, arg);
4315 case F2FS_IOC_SET_PIN_FILE:
4316 return f2fs_ioc_set_pin_file(filp, arg);
4317 case F2FS_IOC_PRECACHE_EXTENTS:
4318 return f2fs_ioc_precache_extents(filp);
4319 case F2FS_IOC_RESIZE_FS:
4320 return f2fs_ioc_resize_fs(filp, arg);
4321 case FS_IOC_ENABLE_VERITY:
4322 return f2fs_ioc_enable_verity(filp, arg);
4323 case FS_IOC_MEASURE_VERITY:
4324 return f2fs_ioc_measure_verity(filp, arg);
4325 case FS_IOC_READ_VERITY_METADATA:
4326 return f2fs_ioc_read_verity_metadata(filp, arg);
4327 case FS_IOC_GETFSLABEL:
4328 return f2fs_ioc_getfslabel(filp, arg);
4329 case FS_IOC_SETFSLABEL:
4330 return f2fs_ioc_setfslabel(filp, arg);
4331 case F2FS_IOC_GET_COMPRESS_BLOCKS:
4332 return f2fs_ioc_get_compress_blocks(filp, arg);
4333 case F2FS_IOC_RELEASE_COMPRESS_BLOCKS:
4334 return f2fs_release_compress_blocks(filp, arg);
4335 case F2FS_IOC_RESERVE_COMPRESS_BLOCKS:
4336 return f2fs_reserve_compress_blocks(filp, arg);
4337 case F2FS_IOC_SEC_TRIM_FILE:
4338 return f2fs_sec_trim_file(filp, arg);
4339 case F2FS_IOC_GET_COMPRESS_OPTION:
4340 return f2fs_ioc_get_compress_option(filp, arg);
4341 case F2FS_IOC_SET_COMPRESS_OPTION:
4342 return f2fs_ioc_set_compress_option(filp, arg);
4343 case F2FS_IOC_DECOMPRESS_FILE:
4344 return f2fs_ioc_decompress_file(filp);
4345 case F2FS_IOC_COMPRESS_FILE:
4346 return f2fs_ioc_compress_file(filp);
4347 default:
4348 return -ENOTTY;
4349 }
4350 }
4351
f2fs_ioctl(struct file * filp,unsigned int cmd,unsigned long arg)4352 long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
4353 {
4354 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
4355 return -EIO;
4356 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(filp))))
4357 return -ENOSPC;
4358
4359 return __f2fs_ioctl(filp, cmd, arg);
4360 }
4361
4362 /*
4363 * Return %true if the given read or write request should use direct I/O, or
4364 * %false if it should use buffered I/O.
4365 */
f2fs_should_use_dio(struct inode * inode,struct kiocb * iocb,struct iov_iter * iter)4366 static bool f2fs_should_use_dio(struct inode *inode, struct kiocb *iocb,
4367 struct iov_iter *iter)
4368 {
4369 unsigned int align;
4370
4371 if (!(iocb->ki_flags & IOCB_DIRECT))
4372 return false;
4373
4374 if (f2fs_force_buffered_io(inode, iov_iter_rw(iter)))
4375 return false;
4376
4377 /*
4378 * Direct I/O not aligned to the disk's logical_block_size will be
4379 * attempted, but will fail with -EINVAL.
4380 *
4381 * f2fs additionally requires that direct I/O be aligned to the
4382 * filesystem block size, which is often a stricter requirement.
4383 * However, f2fs traditionally falls back to buffered I/O on requests
4384 * that are logical_block_size-aligned but not fs-block aligned.
4385 *
4386 * The below logic implements this behavior.
4387 */
4388 align = iocb->ki_pos | iov_iter_alignment(iter);
4389 if (!IS_ALIGNED(align, i_blocksize(inode)) &&
4390 IS_ALIGNED(align, bdev_logical_block_size(inode->i_sb->s_bdev)))
4391 return false;
4392
4393 return true;
4394 }
4395
f2fs_dio_read_end_io(struct kiocb * iocb,ssize_t size,int error,unsigned int flags)4396 static int f2fs_dio_read_end_io(struct kiocb *iocb, ssize_t size, int error,
4397 unsigned int flags)
4398 {
4399 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(iocb->ki_filp));
4400
4401 dec_page_count(sbi, F2FS_DIO_READ);
4402 if (error)
4403 return error;
4404 f2fs_update_iostat(sbi, NULL, APP_DIRECT_READ_IO, size);
4405 return 0;
4406 }
4407
4408 static const struct iomap_dio_ops f2fs_iomap_dio_read_ops = {
4409 .end_io = f2fs_dio_read_end_io,
4410 };
4411
f2fs_dio_read_iter(struct kiocb * iocb,struct iov_iter * to)4412 static ssize_t f2fs_dio_read_iter(struct kiocb *iocb, struct iov_iter *to)
4413 {
4414 struct file *file = iocb->ki_filp;
4415 struct inode *inode = file_inode(file);
4416 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4417 struct f2fs_inode_info *fi = F2FS_I(inode);
4418 const loff_t pos = iocb->ki_pos;
4419 const size_t count = iov_iter_count(to);
4420 struct iomap_dio *dio;
4421 ssize_t ret;
4422
4423 if (count == 0)
4424 return 0; /* skip atime update */
4425
4426 trace_f2fs_direct_IO_enter(inode, iocb, count, READ);
4427
4428 if (iocb->ki_flags & IOCB_NOWAIT) {
4429 if (!f2fs_down_read_trylock(&fi->i_gc_rwsem[READ])) {
4430 ret = -EAGAIN;
4431 goto out;
4432 }
4433 } else {
4434 f2fs_down_read(&fi->i_gc_rwsem[READ]);
4435 }
4436
4437 /*
4438 * We have to use __iomap_dio_rw() and iomap_dio_complete() instead of
4439 * the higher-level function iomap_dio_rw() in order to ensure that the
4440 * F2FS_DIO_READ counter will be decremented correctly in all cases.
4441 */
4442 inc_page_count(sbi, F2FS_DIO_READ);
4443 dio = __iomap_dio_rw(iocb, to, &f2fs_iomap_ops,
4444 &f2fs_iomap_dio_read_ops, 0, NULL, 0);
4445 if (IS_ERR_OR_NULL(dio)) {
4446 ret = PTR_ERR_OR_ZERO(dio);
4447 if (ret != -EIOCBQUEUED)
4448 dec_page_count(sbi, F2FS_DIO_READ);
4449 } else {
4450 ret = iomap_dio_complete(dio);
4451 }
4452
4453 f2fs_up_read(&fi->i_gc_rwsem[READ]);
4454
4455 file_accessed(file);
4456 out:
4457 trace_f2fs_direct_IO_exit(inode, pos, count, READ, ret);
4458 return ret;
4459 }
4460
f2fs_trace_rw_file_path(struct file * file,loff_t pos,size_t count,int rw)4461 static void f2fs_trace_rw_file_path(struct file *file, loff_t pos, size_t count,
4462 int rw)
4463 {
4464 struct inode *inode = file_inode(file);
4465 char *buf, *path;
4466
4467 buf = f2fs_getname(F2FS_I_SB(inode));
4468 if (!buf)
4469 return;
4470 path = dentry_path_raw(file_dentry(file), buf, PATH_MAX);
4471 if (IS_ERR(path))
4472 goto free_buf;
4473 if (rw == WRITE)
4474 trace_f2fs_datawrite_start(inode, pos, count,
4475 current->pid, path, current->comm);
4476 else
4477 trace_f2fs_dataread_start(inode, pos, count,
4478 current->pid, path, current->comm);
4479 free_buf:
4480 f2fs_putname(buf);
4481 }
4482
f2fs_file_read_iter(struct kiocb * iocb,struct iov_iter * to)4483 static ssize_t f2fs_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
4484 {
4485 struct inode *inode = file_inode(iocb->ki_filp);
4486 const loff_t pos = iocb->ki_pos;
4487 ssize_t ret;
4488
4489 if (!f2fs_is_compress_backend_ready(inode))
4490 return -EOPNOTSUPP;
4491
4492 if (trace_f2fs_dataread_start_enabled())
4493 f2fs_trace_rw_file_path(iocb->ki_filp, iocb->ki_pos,
4494 iov_iter_count(to), READ);
4495
4496 if (f2fs_should_use_dio(inode, iocb, to)) {
4497 ret = f2fs_dio_read_iter(iocb, to);
4498 } else {
4499 ret = filemap_read(iocb, to, 0);
4500 if (ret > 0)
4501 f2fs_update_iostat(F2FS_I_SB(inode), inode,
4502 APP_BUFFERED_READ_IO, ret);
4503 }
4504 if (trace_f2fs_dataread_end_enabled())
4505 trace_f2fs_dataread_end(inode, pos, ret);
4506 return ret;
4507 }
4508
f2fs_file_splice_read(struct file * in,loff_t * ppos,struct pipe_inode_info * pipe,size_t len,unsigned int flags)4509 static ssize_t f2fs_file_splice_read(struct file *in, loff_t *ppos,
4510 struct pipe_inode_info *pipe,
4511 size_t len, unsigned int flags)
4512 {
4513 struct inode *inode = file_inode(in);
4514 const loff_t pos = *ppos;
4515 ssize_t ret;
4516
4517 if (!f2fs_is_compress_backend_ready(inode))
4518 return -EOPNOTSUPP;
4519
4520 if (trace_f2fs_dataread_start_enabled())
4521 f2fs_trace_rw_file_path(in, pos, len, READ);
4522
4523 ret = filemap_splice_read(in, ppos, pipe, len, flags);
4524 if (ret > 0)
4525 f2fs_update_iostat(F2FS_I_SB(inode), inode,
4526 APP_BUFFERED_READ_IO, ret);
4527
4528 if (trace_f2fs_dataread_end_enabled())
4529 trace_f2fs_dataread_end(inode, pos, ret);
4530 return ret;
4531 }
4532
f2fs_write_checks(struct kiocb * iocb,struct iov_iter * from)4533 static ssize_t f2fs_write_checks(struct kiocb *iocb, struct iov_iter *from)
4534 {
4535 struct file *file = iocb->ki_filp;
4536 struct inode *inode = file_inode(file);
4537 ssize_t count;
4538 int err;
4539
4540 if (IS_IMMUTABLE(inode))
4541 return -EPERM;
4542
4543 if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED))
4544 return -EPERM;
4545
4546 count = generic_write_checks(iocb, from);
4547 if (count <= 0)
4548 return count;
4549
4550 err = file_modified(file);
4551 if (err)
4552 return err;
4553 return count;
4554 }
4555
4556 /*
4557 * Preallocate blocks for a write request, if it is possible and helpful to do
4558 * so. Returns a positive number if blocks may have been preallocated, 0 if no
4559 * blocks were preallocated, or a negative errno value if something went
4560 * seriously wrong. Also sets FI_PREALLOCATED_ALL on the inode if *all* the
4561 * requested blocks (not just some of them) have been allocated.
4562 */
f2fs_preallocate_blocks(struct kiocb * iocb,struct iov_iter * iter,bool dio)4563 static int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *iter,
4564 bool dio)
4565 {
4566 struct inode *inode = file_inode(iocb->ki_filp);
4567 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4568 const loff_t pos = iocb->ki_pos;
4569 const size_t count = iov_iter_count(iter);
4570 struct f2fs_map_blocks map = {};
4571 int flag;
4572 int ret;
4573
4574 /* If it will be an out-of-place direct write, don't bother. */
4575 if (dio && f2fs_lfs_mode(sbi))
4576 return 0;
4577 /*
4578 * Don't preallocate holes aligned to DIO_SKIP_HOLES which turns into
4579 * buffered IO, if DIO meets any holes.
4580 */
4581 if (dio && i_size_read(inode) &&
4582 (F2FS_BYTES_TO_BLK(pos) < F2FS_BLK_ALIGN(i_size_read(inode))))
4583 return 0;
4584
4585 /* No-wait I/O can't allocate blocks. */
4586 if (iocb->ki_flags & IOCB_NOWAIT)
4587 return 0;
4588
4589 /* If it will be a short write, don't bother. */
4590 if (fault_in_iov_iter_readable(iter, count))
4591 return 0;
4592
4593 if (f2fs_has_inline_data(inode)) {
4594 /* If the data will fit inline, don't bother. */
4595 if (pos + count <= MAX_INLINE_DATA(inode))
4596 return 0;
4597 ret = f2fs_convert_inline_inode(inode);
4598 if (ret)
4599 return ret;
4600 }
4601
4602 /* Do not preallocate blocks that will be written partially in 4KB. */
4603 map.m_lblk = F2FS_BLK_ALIGN(pos);
4604 map.m_len = F2FS_BYTES_TO_BLK(pos + count);
4605 if (map.m_len > map.m_lblk)
4606 map.m_len -= map.m_lblk;
4607 else
4608 map.m_len = 0;
4609 map.m_may_create = true;
4610 if (dio) {
4611 map.m_seg_type = f2fs_rw_hint_to_seg_type(inode->i_write_hint);
4612 flag = F2FS_GET_BLOCK_PRE_DIO;
4613 } else {
4614 map.m_seg_type = NO_CHECK_TYPE;
4615 flag = F2FS_GET_BLOCK_PRE_AIO;
4616 }
4617
4618 ret = f2fs_map_blocks(inode, &map, flag);
4619 /* -ENOSPC|-EDQUOT are fine to report the number of allocated blocks. */
4620 if (ret < 0 && !((ret == -ENOSPC || ret == -EDQUOT) && map.m_len > 0))
4621 return ret;
4622 if (ret == 0)
4623 set_inode_flag(inode, FI_PREALLOCATED_ALL);
4624 return map.m_len;
4625 }
4626
f2fs_buffered_write_iter(struct kiocb * iocb,struct iov_iter * from)4627 static ssize_t f2fs_buffered_write_iter(struct kiocb *iocb,
4628 struct iov_iter *from)
4629 {
4630 struct file *file = iocb->ki_filp;
4631 struct inode *inode = file_inode(file);
4632 ssize_t ret;
4633
4634 if (iocb->ki_flags & IOCB_NOWAIT)
4635 return -EOPNOTSUPP;
4636
4637 ret = generic_perform_write(iocb, from);
4638
4639 if (ret > 0) {
4640 f2fs_update_iostat(F2FS_I_SB(inode), inode,
4641 APP_BUFFERED_IO, ret);
4642 }
4643 return ret;
4644 }
4645
f2fs_dio_write_end_io(struct kiocb * iocb,ssize_t size,int error,unsigned int flags)4646 static int f2fs_dio_write_end_io(struct kiocb *iocb, ssize_t size, int error,
4647 unsigned int flags)
4648 {
4649 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(iocb->ki_filp));
4650
4651 dec_page_count(sbi, F2FS_DIO_WRITE);
4652 if (error)
4653 return error;
4654 f2fs_update_time(sbi, REQ_TIME);
4655 f2fs_update_iostat(sbi, NULL, APP_DIRECT_IO, size);
4656 return 0;
4657 }
4658
4659 static const struct iomap_dio_ops f2fs_iomap_dio_write_ops = {
4660 .end_io = f2fs_dio_write_end_io,
4661 };
4662
f2fs_flush_buffered_write(struct address_space * mapping,loff_t start_pos,loff_t end_pos)4663 static void f2fs_flush_buffered_write(struct address_space *mapping,
4664 loff_t start_pos, loff_t end_pos)
4665 {
4666 int ret;
4667
4668 ret = filemap_write_and_wait_range(mapping, start_pos, end_pos);
4669 if (ret < 0)
4670 return;
4671 invalidate_mapping_pages(mapping,
4672 start_pos >> PAGE_SHIFT,
4673 end_pos >> PAGE_SHIFT);
4674 }
4675
f2fs_dio_write_iter(struct kiocb * iocb,struct iov_iter * from,bool * may_need_sync)4676 static ssize_t f2fs_dio_write_iter(struct kiocb *iocb, struct iov_iter *from,
4677 bool *may_need_sync)
4678 {
4679 struct file *file = iocb->ki_filp;
4680 struct inode *inode = file_inode(file);
4681 struct f2fs_inode_info *fi = F2FS_I(inode);
4682 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4683 const bool do_opu = f2fs_lfs_mode(sbi);
4684 const loff_t pos = iocb->ki_pos;
4685 const ssize_t count = iov_iter_count(from);
4686 unsigned int dio_flags;
4687 struct iomap_dio *dio;
4688 ssize_t ret;
4689
4690 trace_f2fs_direct_IO_enter(inode, iocb, count, WRITE);
4691
4692 if (iocb->ki_flags & IOCB_NOWAIT) {
4693 /* f2fs_convert_inline_inode() and block allocation can block */
4694 if (f2fs_has_inline_data(inode) ||
4695 !f2fs_overwrite_io(inode, pos, count)) {
4696 ret = -EAGAIN;
4697 goto out;
4698 }
4699
4700 if (!f2fs_down_read_trylock(&fi->i_gc_rwsem[WRITE])) {
4701 ret = -EAGAIN;
4702 goto out;
4703 }
4704 if (do_opu && !f2fs_down_read_trylock(&fi->i_gc_rwsem[READ])) {
4705 f2fs_up_read(&fi->i_gc_rwsem[WRITE]);
4706 ret = -EAGAIN;
4707 goto out;
4708 }
4709 } else {
4710 ret = f2fs_convert_inline_inode(inode);
4711 if (ret)
4712 goto out;
4713
4714 f2fs_down_read(&fi->i_gc_rwsem[WRITE]);
4715 if (do_opu)
4716 f2fs_down_read(&fi->i_gc_rwsem[READ]);
4717 }
4718
4719 /*
4720 * We have to use __iomap_dio_rw() and iomap_dio_complete() instead of
4721 * the higher-level function iomap_dio_rw() in order to ensure that the
4722 * F2FS_DIO_WRITE counter will be decremented correctly in all cases.
4723 */
4724 inc_page_count(sbi, F2FS_DIO_WRITE);
4725 dio_flags = 0;
4726 if (pos + count > inode->i_size)
4727 dio_flags |= IOMAP_DIO_FORCE_WAIT;
4728 dio = __iomap_dio_rw(iocb, from, &f2fs_iomap_ops,
4729 &f2fs_iomap_dio_write_ops, dio_flags, NULL, 0);
4730 if (IS_ERR_OR_NULL(dio)) {
4731 ret = PTR_ERR_OR_ZERO(dio);
4732 if (ret == -ENOTBLK)
4733 ret = 0;
4734 if (ret != -EIOCBQUEUED)
4735 dec_page_count(sbi, F2FS_DIO_WRITE);
4736 } else {
4737 ret = iomap_dio_complete(dio);
4738 }
4739
4740 if (do_opu)
4741 f2fs_up_read(&fi->i_gc_rwsem[READ]);
4742 f2fs_up_read(&fi->i_gc_rwsem[WRITE]);
4743
4744 if (ret < 0)
4745 goto out;
4746 if (pos + ret > inode->i_size)
4747 f2fs_i_size_write(inode, pos + ret);
4748 if (!do_opu)
4749 set_inode_flag(inode, FI_UPDATE_WRITE);
4750
4751 if (iov_iter_count(from)) {
4752 ssize_t ret2;
4753 loff_t bufio_start_pos = iocb->ki_pos;
4754
4755 /*
4756 * The direct write was partial, so we need to fall back to a
4757 * buffered write for the remainder.
4758 */
4759
4760 ret2 = f2fs_buffered_write_iter(iocb, from);
4761 if (iov_iter_count(from))
4762 f2fs_write_failed(inode, iocb->ki_pos);
4763 if (ret2 < 0)
4764 goto out;
4765
4766 /*
4767 * Ensure that the pagecache pages are written to disk and
4768 * invalidated to preserve the expected O_DIRECT semantics.
4769 */
4770 if (ret2 > 0) {
4771 loff_t bufio_end_pos = bufio_start_pos + ret2 - 1;
4772
4773 ret += ret2;
4774
4775 f2fs_flush_buffered_write(file->f_mapping,
4776 bufio_start_pos,
4777 bufio_end_pos);
4778 }
4779 } else {
4780 /* iomap_dio_rw() already handled the generic_write_sync(). */
4781 *may_need_sync = false;
4782 }
4783 out:
4784 trace_f2fs_direct_IO_exit(inode, pos, count, WRITE, ret);
4785 return ret;
4786 }
4787
f2fs_file_write_iter(struct kiocb * iocb,struct iov_iter * from)4788 static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
4789 {
4790 struct inode *inode = file_inode(iocb->ki_filp);
4791 const loff_t orig_pos = iocb->ki_pos;
4792 const size_t orig_count = iov_iter_count(from);
4793 loff_t target_size;
4794 bool dio;
4795 bool may_need_sync = true;
4796 int preallocated;
4797 ssize_t ret;
4798
4799 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) {
4800 ret = -EIO;
4801 goto out;
4802 }
4803
4804 if (!f2fs_is_compress_backend_ready(inode)) {
4805 ret = -EOPNOTSUPP;
4806 goto out;
4807 }
4808
4809 if (iocb->ki_flags & IOCB_NOWAIT) {
4810 if (!inode_trylock(inode)) {
4811 ret = -EAGAIN;
4812 goto out;
4813 }
4814 } else {
4815 inode_lock(inode);
4816 }
4817
4818 ret = f2fs_write_checks(iocb, from);
4819 if (ret <= 0)
4820 goto out_unlock;
4821
4822 /* Determine whether we will do a direct write or a buffered write. */
4823 dio = f2fs_should_use_dio(inode, iocb, from);
4824
4825 /* Possibly preallocate the blocks for the write. */
4826 target_size = iocb->ki_pos + iov_iter_count(from);
4827 preallocated = f2fs_preallocate_blocks(iocb, from, dio);
4828 if (preallocated < 0) {
4829 ret = preallocated;
4830 } else {
4831 if (trace_f2fs_datawrite_start_enabled())
4832 f2fs_trace_rw_file_path(iocb->ki_filp, iocb->ki_pos,
4833 orig_count, WRITE);
4834
4835 /* Do the actual write. */
4836 ret = dio ?
4837 f2fs_dio_write_iter(iocb, from, &may_need_sync) :
4838 f2fs_buffered_write_iter(iocb, from);
4839
4840 if (trace_f2fs_datawrite_end_enabled())
4841 trace_f2fs_datawrite_end(inode, orig_pos, ret);
4842 }
4843
4844 /* Don't leave any preallocated blocks around past i_size. */
4845 if (preallocated && i_size_read(inode) < target_size) {
4846 f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
4847 filemap_invalidate_lock(inode->i_mapping);
4848 if (!f2fs_truncate(inode))
4849 file_dont_truncate(inode);
4850 filemap_invalidate_unlock(inode->i_mapping);
4851 f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
4852 } else {
4853 file_dont_truncate(inode);
4854 }
4855
4856 clear_inode_flag(inode, FI_PREALLOCATED_ALL);
4857 out_unlock:
4858 inode_unlock(inode);
4859 out:
4860 trace_f2fs_file_write_iter(inode, orig_pos, orig_count, ret);
4861
4862 if (ret > 0 && may_need_sync)
4863 ret = generic_write_sync(iocb, ret);
4864
4865 /* If buffered IO was forced, flush and drop the data from
4866 * the page cache to preserve O_DIRECT semantics
4867 */
4868 if (ret > 0 && !dio && (iocb->ki_flags & IOCB_DIRECT))
4869 f2fs_flush_buffered_write(iocb->ki_filp->f_mapping,
4870 orig_pos,
4871 orig_pos + ret - 1);
4872
4873 return ret;
4874 }
4875
f2fs_file_fadvise(struct file * filp,loff_t offset,loff_t len,int advice)4876 static int f2fs_file_fadvise(struct file *filp, loff_t offset, loff_t len,
4877 int advice)
4878 {
4879 struct address_space *mapping;
4880 struct backing_dev_info *bdi;
4881 struct inode *inode = file_inode(filp);
4882 int err;
4883
4884 if (advice == POSIX_FADV_SEQUENTIAL) {
4885 if (S_ISFIFO(inode->i_mode))
4886 return -ESPIPE;
4887
4888 mapping = filp->f_mapping;
4889 if (!mapping || len < 0)
4890 return -EINVAL;
4891
4892 bdi = inode_to_bdi(mapping->host);
4893 filp->f_ra.ra_pages = bdi->ra_pages *
4894 F2FS_I_SB(inode)->seq_file_ra_mul;
4895 spin_lock(&filp->f_lock);
4896 filp->f_mode &= ~FMODE_RANDOM;
4897 spin_unlock(&filp->f_lock);
4898 return 0;
4899 }
4900
4901 err = generic_fadvise(filp, offset, len, advice);
4902 if (!err && advice == POSIX_FADV_DONTNEED &&
4903 test_opt(F2FS_I_SB(inode), COMPRESS_CACHE) &&
4904 f2fs_compressed_file(inode))
4905 f2fs_invalidate_compress_pages(F2FS_I_SB(inode), inode->i_ino);
4906
4907 return err;
4908 }
4909
4910 #ifdef CONFIG_COMPAT
4911 struct compat_f2fs_gc_range {
4912 u32 sync;
4913 compat_u64 start;
4914 compat_u64 len;
4915 };
4916 #define F2FS_IOC32_GARBAGE_COLLECT_RANGE _IOW(F2FS_IOCTL_MAGIC, 11,\
4917 struct compat_f2fs_gc_range)
4918
f2fs_compat_ioc_gc_range(struct file * file,unsigned long arg)4919 static int f2fs_compat_ioc_gc_range(struct file *file, unsigned long arg)
4920 {
4921 struct compat_f2fs_gc_range __user *urange;
4922 struct f2fs_gc_range range;
4923 int err;
4924
4925 urange = compat_ptr(arg);
4926 err = get_user(range.sync, &urange->sync);
4927 err |= get_user(range.start, &urange->start);
4928 err |= get_user(range.len, &urange->len);
4929 if (err)
4930 return -EFAULT;
4931
4932 return __f2fs_ioc_gc_range(file, &range);
4933 }
4934
4935 struct compat_f2fs_move_range {
4936 u32 dst_fd;
4937 compat_u64 pos_in;
4938 compat_u64 pos_out;
4939 compat_u64 len;
4940 };
4941 #define F2FS_IOC32_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \
4942 struct compat_f2fs_move_range)
4943
f2fs_compat_ioc_move_range(struct file * file,unsigned long arg)4944 static int f2fs_compat_ioc_move_range(struct file *file, unsigned long arg)
4945 {
4946 struct compat_f2fs_move_range __user *urange;
4947 struct f2fs_move_range range;
4948 int err;
4949
4950 urange = compat_ptr(arg);
4951 err = get_user(range.dst_fd, &urange->dst_fd);
4952 err |= get_user(range.pos_in, &urange->pos_in);
4953 err |= get_user(range.pos_out, &urange->pos_out);
4954 err |= get_user(range.len, &urange->len);
4955 if (err)
4956 return -EFAULT;
4957
4958 return __f2fs_ioc_move_range(file, &range);
4959 }
4960
f2fs_compat_ioctl(struct file * file,unsigned int cmd,unsigned long arg)4961 long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
4962 {
4963 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
4964 return -EIO;
4965 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(file))))
4966 return -ENOSPC;
4967
4968 switch (cmd) {
4969 case FS_IOC32_GETVERSION:
4970 cmd = FS_IOC_GETVERSION;
4971 break;
4972 case F2FS_IOC32_GARBAGE_COLLECT_RANGE:
4973 return f2fs_compat_ioc_gc_range(file, arg);
4974 case F2FS_IOC32_MOVE_RANGE:
4975 return f2fs_compat_ioc_move_range(file, arg);
4976 case F2FS_IOC_START_ATOMIC_WRITE:
4977 case F2FS_IOC_START_ATOMIC_REPLACE:
4978 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
4979 case F2FS_IOC_START_VOLATILE_WRITE:
4980 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
4981 case F2FS_IOC_ABORT_ATOMIC_WRITE:
4982 case F2FS_IOC_SHUTDOWN:
4983 case FITRIM:
4984 case FS_IOC_SET_ENCRYPTION_POLICY:
4985 case FS_IOC_GET_ENCRYPTION_PWSALT:
4986 case FS_IOC_GET_ENCRYPTION_POLICY:
4987 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
4988 case FS_IOC_ADD_ENCRYPTION_KEY:
4989 case FS_IOC_REMOVE_ENCRYPTION_KEY:
4990 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
4991 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
4992 case FS_IOC_GET_ENCRYPTION_NONCE:
4993 case F2FS_IOC_GARBAGE_COLLECT:
4994 case F2FS_IOC_WRITE_CHECKPOINT:
4995 case F2FS_IOC_DEFRAGMENT:
4996 case F2FS_IOC_FLUSH_DEVICE:
4997 case F2FS_IOC_GET_FEATURES:
4998 case F2FS_IOC_GET_PIN_FILE:
4999 case F2FS_IOC_SET_PIN_FILE:
5000 case F2FS_IOC_PRECACHE_EXTENTS:
5001 case F2FS_IOC_RESIZE_FS:
5002 case FS_IOC_ENABLE_VERITY:
5003 case FS_IOC_MEASURE_VERITY:
5004 case FS_IOC_READ_VERITY_METADATA:
5005 case FS_IOC_GETFSLABEL:
5006 case FS_IOC_SETFSLABEL:
5007 case F2FS_IOC_GET_COMPRESS_BLOCKS:
5008 case F2FS_IOC_RELEASE_COMPRESS_BLOCKS:
5009 case F2FS_IOC_RESERVE_COMPRESS_BLOCKS:
5010 case F2FS_IOC_SEC_TRIM_FILE:
5011 case F2FS_IOC_GET_COMPRESS_OPTION:
5012 case F2FS_IOC_SET_COMPRESS_OPTION:
5013 case F2FS_IOC_DECOMPRESS_FILE:
5014 case F2FS_IOC_COMPRESS_FILE:
5015 break;
5016 default:
5017 return -ENOIOCTLCMD;
5018 }
5019 return __f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
5020 }
5021 #endif
5022
5023 const struct file_operations f2fs_file_operations = {
5024 .llseek = f2fs_llseek,
5025 .read_iter = f2fs_file_read_iter,
5026 .write_iter = f2fs_file_write_iter,
5027 .iopoll = iocb_bio_iopoll,
5028 .open = f2fs_file_open,
5029 .release = f2fs_release_file,
5030 .mmap = f2fs_file_mmap,
5031 .flush = f2fs_file_flush,
5032 .fsync = f2fs_sync_file,
5033 .fallocate = f2fs_fallocate,
5034 .unlocked_ioctl = f2fs_ioctl,
5035 #ifdef CONFIG_COMPAT
5036 .compat_ioctl = f2fs_compat_ioctl,
5037 #endif
5038 .splice_read = f2fs_file_splice_read,
5039 .splice_write = iter_file_splice_write,
5040 .fadvise = f2fs_file_fadvise,
5041 };
5042