1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * fs/f2fs/file.c
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
7 */
8 #include <linux/fs.h>
9 #include <linux/f2fs_fs.h>
10 #include <linux/stat.h>
11 #include <linux/buffer_head.h>
12 #include <linux/writeback.h>
13 #include <linux/blkdev.h>
14 #include <linux/falloc.h>
15 #include <linux/types.h>
16 #include <linux/compat.h>
17 #include <linux/uaccess.h>
18 #include <linux/mount.h>
19 #include <linux/pagevec.h>
20 #include <linux/uio.h>
21 #include <linux/uuid.h>
22 #include <linux/file.h>
23 #include <linux/nls.h>
24 #include <linux/sched/signal.h>
25 #include <linux/fileattr.h>
26
27 #include "f2fs.h"
28 #include "node.h"
29 #include "segment.h"
30 #include "xattr.h"
31 #include "acl.h"
32 #include "gc.h"
33 #include <trace/events/f2fs.h>
34 #include <uapi/linux/f2fs.h>
35
f2fs_filemap_fault(struct vm_fault * vmf)36 static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf)
37 {
38 struct inode *inode = file_inode(vmf->vma->vm_file);
39 vm_fault_t ret;
40
41 down_read(&F2FS_I(inode)->i_mmap_sem);
42 ret = filemap_fault(vmf);
43 up_read(&F2FS_I(inode)->i_mmap_sem);
44
45 if (!ret)
46 f2fs_update_iostat(F2FS_I_SB(inode), APP_MAPPED_READ_IO,
47 F2FS_BLKSIZE);
48
49 trace_f2fs_filemap_fault(inode, vmf->pgoff, (unsigned long)ret);
50
51 return ret;
52 }
53
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 (unlikely(f2fs_cp_error(sbi))) {
67 err = -EIO;
68 goto err;
69 }
70
71 if (!f2fs_is_checkpoint_ready(sbi)) {
72 err = -ENOSPC;
73 goto err;
74 }
75
76 err = f2fs_convert_inline_inode(inode);
77 if (err)
78 goto err;
79
80 #ifdef CONFIG_F2FS_FS_COMPRESSION
81 if (f2fs_compressed_file(inode)) {
82 int ret = f2fs_is_compressed_cluster(inode, page->index);
83
84 if (ret < 0) {
85 err = ret;
86 goto err;
87 } else if (ret) {
88 if (ret < F2FS_I(inode)->i_cluster_size) {
89 err = -EAGAIN;
90 goto err;
91 }
92 need_alloc = false;
93 }
94 }
95 #endif
96 /* should do out of any locked page */
97 if (need_alloc)
98 f2fs_balance_fs(sbi, true);
99
100 sb_start_pagefault(inode->i_sb);
101
102 f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
103
104 file_update_time(vmf->vma->vm_file);
105 down_read(&F2FS_I(inode)->i_mmap_sem);
106 lock_page(page);
107 if (unlikely(page->mapping != inode->i_mapping ||
108 page_offset(page) > i_size_read(inode) ||
109 !PageUptodate(page))) {
110 unlock_page(page);
111 err = -EFAULT;
112 goto out_sem;
113 }
114
115 if (need_alloc) {
116 /* block allocation */
117 f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true);
118 set_new_dnode(&dn, inode, NULL, NULL, 0);
119 err = f2fs_get_block(&dn, page->index);
120 f2fs_put_dnode(&dn);
121 f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false);
122 }
123
124 #ifdef CONFIG_F2FS_FS_COMPRESSION
125 if (!need_alloc) {
126 set_new_dnode(&dn, inode, NULL, NULL, 0);
127 err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE);
128 f2fs_put_dnode(&dn);
129 }
130 #endif
131 if (err) {
132 unlock_page(page);
133 goto out_sem;
134 }
135
136 f2fs_wait_on_page_writeback(page, DATA, false, true);
137
138 /* wait for GCed page writeback via META_MAPPING */
139 f2fs_wait_on_block_writeback(inode, dn.data_blkaddr);
140
141 /*
142 * check to see if the page is mapped already (no holes)
143 */
144 if (PageMappedToDisk(page))
145 goto out_sem;
146
147 /* page is wholly or partially inside EOF */
148 if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
149 i_size_read(inode)) {
150 loff_t offset;
151
152 offset = i_size_read(inode) & ~PAGE_MASK;
153 zero_user_segment(page, offset, PAGE_SIZE);
154 }
155 set_page_dirty(page);
156 if (!PageUptodate(page))
157 SetPageUptodate(page);
158
159 f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE);
160 f2fs_update_time(sbi, REQ_TIME);
161
162 trace_f2fs_vm_page_mkwrite(page, DATA);
163 out_sem:
164 up_read(&F2FS_I(inode)->i_mmap_sem);
165
166 sb_end_pagefault(inode->i_sb);
167 err:
168 return block_page_mkwrite_return(err);
169 }
170
171 static const struct vm_operations_struct f2fs_file_vm_ops = {
172 .fault = f2fs_filemap_fault,
173 .map_pages = filemap_map_pages,
174 .page_mkwrite = f2fs_vm_page_mkwrite,
175 };
176
get_parent_ino(struct inode * inode,nid_t * pino)177 static int get_parent_ino(struct inode *inode, nid_t *pino)
178 {
179 struct dentry *dentry;
180
181 /*
182 * Make sure to get the non-deleted alias. The alias associated with
183 * the open file descriptor being fsync()'ed may be deleted already.
184 */
185 dentry = d_find_alias(inode);
186 if (!dentry)
187 return 0;
188
189 *pino = parent_ino(dentry);
190 dput(dentry);
191 return 1;
192 }
193
need_do_checkpoint(struct inode * inode)194 static inline enum cp_reason_type need_do_checkpoint(struct inode *inode)
195 {
196 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
197 enum cp_reason_type cp_reason = CP_NO_NEEDED;
198
199 if (!S_ISREG(inode->i_mode))
200 cp_reason = CP_NON_REGULAR;
201 else if (f2fs_compressed_file(inode))
202 cp_reason = CP_COMPRESSED;
203 else if (inode->i_nlink != 1)
204 cp_reason = CP_HARDLINK;
205 else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
206 cp_reason = CP_SB_NEED_CP;
207 else if (file_wrong_pino(inode))
208 cp_reason = CP_WRONG_PINO;
209 else if (!f2fs_space_for_roll_forward(sbi))
210 cp_reason = CP_NO_SPC_ROLL;
211 else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
212 cp_reason = CP_NODE_NEED_CP;
213 else if (test_opt(sbi, FASTBOOT))
214 cp_reason = CP_FASTBOOT_MODE;
215 else if (F2FS_OPTION(sbi).active_logs == 2)
216 cp_reason = CP_SPEC_LOG_NUM;
217 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT &&
218 f2fs_need_dentry_mark(sbi, inode->i_ino) &&
219 f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino,
220 TRANS_DIR_INO))
221 cp_reason = CP_RECOVER_DIR;
222
223 return cp_reason;
224 }
225
need_inode_page_update(struct f2fs_sb_info * sbi,nid_t ino)226 static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
227 {
228 struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
229 bool ret = false;
230 /* But we need to avoid that there are some inode updates */
231 if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino))
232 ret = true;
233 f2fs_put_page(i, 0);
234 return ret;
235 }
236
try_to_fix_pino(struct inode * inode)237 static void try_to_fix_pino(struct inode *inode)
238 {
239 struct f2fs_inode_info *fi = F2FS_I(inode);
240 nid_t pino;
241
242 down_write(&fi->i_sem);
243 if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
244 get_parent_ino(inode, &pino)) {
245 f2fs_i_pino_write(inode, pino);
246 file_got_pino(inode);
247 }
248 up_write(&fi->i_sem);
249 }
250
f2fs_do_sync_file(struct file * file,loff_t start,loff_t end,int datasync,bool atomic)251 static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
252 int datasync, bool atomic)
253 {
254 struct inode *inode = file->f_mapping->host;
255 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
256 nid_t ino = inode->i_ino;
257 int ret = 0;
258 enum cp_reason_type cp_reason = 0;
259 struct writeback_control wbc = {
260 .sync_mode = WB_SYNC_ALL,
261 .nr_to_write = LONG_MAX,
262 .for_reclaim = 0,
263 };
264 unsigned int seq_id = 0;
265
266 if (unlikely(f2fs_readonly(inode->i_sb) ||
267 is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
268 return 0;
269
270 trace_f2fs_sync_file_enter(inode);
271
272 if (S_ISDIR(inode->i_mode))
273 goto go_write;
274
275 /* if fdatasync is triggered, let's do in-place-update */
276 if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
277 set_inode_flag(inode, FI_NEED_IPU);
278 ret = file_write_and_wait_range(file, start, end);
279 clear_inode_flag(inode, FI_NEED_IPU);
280
281 if (ret) {
282 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
283 return ret;
284 }
285
286 /* if the inode is dirty, let's recover all the time */
287 if (!f2fs_skip_inode_update(inode, datasync)) {
288 f2fs_write_inode(inode, NULL);
289 goto go_write;
290 }
291
292 /*
293 * if there is no written data, don't waste time to write recovery info.
294 */
295 if (!is_inode_flag_set(inode, FI_APPEND_WRITE) &&
296 !f2fs_exist_written_data(sbi, ino, APPEND_INO)) {
297
298 /* it may call write_inode just prior to fsync */
299 if (need_inode_page_update(sbi, ino))
300 goto go_write;
301
302 if (is_inode_flag_set(inode, FI_UPDATE_WRITE) ||
303 f2fs_exist_written_data(sbi, ino, UPDATE_INO))
304 goto flush_out;
305 goto out;
306 }
307 go_write:
308 /*
309 * Both of fdatasync() and fsync() are able to be recovered from
310 * sudden-power-off.
311 */
312 down_read(&F2FS_I(inode)->i_sem);
313 cp_reason = need_do_checkpoint(inode);
314 up_read(&F2FS_I(inode)->i_sem);
315
316 if (cp_reason) {
317 /* all the dirty node pages should be flushed for POR */
318 ret = f2fs_sync_fs(inode->i_sb, 1);
319
320 /*
321 * We've secured consistency through sync_fs. Following pino
322 * will be used only for fsynced inodes after checkpoint.
323 */
324 try_to_fix_pino(inode);
325 clear_inode_flag(inode, FI_APPEND_WRITE);
326 clear_inode_flag(inode, FI_UPDATE_WRITE);
327 goto out;
328 }
329 sync_nodes:
330 atomic_inc(&sbi->wb_sync_req[NODE]);
331 ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic, &seq_id);
332 atomic_dec(&sbi->wb_sync_req[NODE]);
333 if (ret)
334 goto out;
335
336 /* if cp_error was enabled, we should avoid infinite loop */
337 if (unlikely(f2fs_cp_error(sbi))) {
338 ret = -EIO;
339 goto out;
340 }
341
342 if (f2fs_need_inode_block_update(sbi, ino)) {
343 f2fs_mark_inode_dirty_sync(inode, true);
344 f2fs_write_inode(inode, NULL);
345 goto sync_nodes;
346 }
347
348 /*
349 * If it's atomic_write, it's just fine to keep write ordering. So
350 * here we don't need to wait for node write completion, since we use
351 * node chain which serializes node blocks. If one of node writes are
352 * reordered, we can see simply broken chain, resulting in stopping
353 * roll-forward recovery. It means we'll recover all or none node blocks
354 * given fsync mark.
355 */
356 if (!atomic) {
357 ret = f2fs_wait_on_node_pages_writeback(sbi, seq_id);
358 if (ret)
359 goto out;
360 }
361
362 /* once recovery info is written, don't need to tack this */
363 f2fs_remove_ino_entry(sbi, ino, APPEND_INO);
364 clear_inode_flag(inode, FI_APPEND_WRITE);
365 flush_out:
366 if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER)
367 ret = f2fs_issue_flush(sbi, inode->i_ino);
368 if (!ret) {
369 f2fs_remove_ino_entry(sbi, ino, UPDATE_INO);
370 clear_inode_flag(inode, FI_UPDATE_WRITE);
371 f2fs_remove_ino_entry(sbi, ino, FLUSH_INO);
372 }
373 f2fs_update_time(sbi, REQ_TIME);
374 out:
375 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
376 return ret;
377 }
378
f2fs_sync_file(struct file * file,loff_t start,loff_t end,int datasync)379 int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
380 {
381 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
382 return -EIO;
383 return f2fs_do_sync_file(file, start, end, datasync, false);
384 }
385
__found_offset(struct address_space * mapping,block_t blkaddr,pgoff_t index,int whence)386 static bool __found_offset(struct address_space *mapping, block_t blkaddr,
387 pgoff_t index, int whence)
388 {
389 switch (whence) {
390 case SEEK_DATA:
391 if (__is_valid_data_blkaddr(blkaddr))
392 return true;
393 if (blkaddr == NEW_ADDR &&
394 xa_get_mark(&mapping->i_pages, index, PAGECACHE_TAG_DIRTY))
395 return true;
396 break;
397 case SEEK_HOLE:
398 if (blkaddr == NULL_ADDR)
399 return true;
400 break;
401 }
402 return false;
403 }
404
f2fs_seek_block(struct file * file,loff_t offset,int whence)405 static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
406 {
407 struct inode *inode = file->f_mapping->host;
408 loff_t maxbytes = inode->i_sb->s_maxbytes;
409 struct dnode_of_data dn;
410 pgoff_t pgofs, end_offset;
411 loff_t data_ofs = offset;
412 loff_t isize;
413 int err = 0;
414
415 inode_lock(inode);
416
417 isize = i_size_read(inode);
418 if (offset >= isize)
419 goto fail;
420
421 /* handle inline data case */
422 if (f2fs_has_inline_data(inode)) {
423 if (whence == SEEK_HOLE) {
424 data_ofs = isize;
425 goto found;
426 } else if (whence == SEEK_DATA) {
427 data_ofs = offset;
428 goto found;
429 }
430 }
431
432 pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
433
434 for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
435 set_new_dnode(&dn, inode, NULL, NULL, 0);
436 err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
437 if (err && err != -ENOENT) {
438 goto fail;
439 } else if (err == -ENOENT) {
440 /* direct node does not exists */
441 if (whence == SEEK_DATA) {
442 pgofs = f2fs_get_next_page_offset(&dn, pgofs);
443 continue;
444 } else {
445 goto found;
446 }
447 }
448
449 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
450
451 /* find data/hole in dnode block */
452 for (; dn.ofs_in_node < end_offset;
453 dn.ofs_in_node++, pgofs++,
454 data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
455 block_t blkaddr;
456
457 blkaddr = f2fs_data_blkaddr(&dn);
458
459 if (__is_valid_data_blkaddr(blkaddr) &&
460 !f2fs_is_valid_blkaddr(F2FS_I_SB(inode),
461 blkaddr, DATA_GENERIC_ENHANCE)) {
462 f2fs_put_dnode(&dn);
463 goto fail;
464 }
465
466 if (__found_offset(file->f_mapping, blkaddr,
467 pgofs, whence)) {
468 f2fs_put_dnode(&dn);
469 goto found;
470 }
471 }
472 f2fs_put_dnode(&dn);
473 }
474
475 if (whence == SEEK_DATA)
476 goto fail;
477 found:
478 if (whence == SEEK_HOLE && data_ofs > isize)
479 data_ofs = isize;
480 inode_unlock(inode);
481 return vfs_setpos(file, data_ofs, maxbytes);
482 fail:
483 inode_unlock(inode);
484 return -ENXIO;
485 }
486
f2fs_llseek(struct file * file,loff_t offset,int whence)487 static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
488 {
489 struct inode *inode = file->f_mapping->host;
490 loff_t maxbytes = inode->i_sb->s_maxbytes;
491
492 if (f2fs_compressed_file(inode))
493 maxbytes = max_file_blocks(inode) << F2FS_BLKSIZE_BITS;
494
495 switch (whence) {
496 case SEEK_SET:
497 case SEEK_CUR:
498 case SEEK_END:
499 return generic_file_llseek_size(file, offset, whence,
500 maxbytes, i_size_read(inode));
501 case SEEK_DATA:
502 case SEEK_HOLE:
503 if (offset < 0)
504 return -ENXIO;
505 return f2fs_seek_block(file, offset, whence);
506 }
507
508 return -EINVAL;
509 }
510
f2fs_file_mmap(struct file * file,struct vm_area_struct * vma)511 static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
512 {
513 struct inode *inode = file_inode(file);
514
515 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
516 return -EIO;
517
518 if (!f2fs_is_compress_backend_ready(inode))
519 return -EOPNOTSUPP;
520
521 file_accessed(file);
522 vma->vm_ops = &f2fs_file_vm_ops;
523 set_inode_flag(inode, FI_MMAP_FILE);
524 return 0;
525 }
526
f2fs_file_open(struct inode * inode,struct file * filp)527 static int f2fs_file_open(struct inode *inode, struct file *filp)
528 {
529 int err = fscrypt_file_open(inode, filp);
530
531 if (err)
532 return err;
533
534 if (!f2fs_is_compress_backend_ready(inode))
535 return -EOPNOTSUPP;
536
537 err = fsverity_file_open(inode, filp);
538 if (err)
539 return err;
540
541 filp->f_mode |= FMODE_NOWAIT;
542
543 return dquot_file_open(inode, filp);
544 }
545
f2fs_truncate_data_blocks_range(struct dnode_of_data * dn,int count)546 void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count)
547 {
548 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
549 struct f2fs_node *raw_node;
550 int nr_free = 0, ofs = dn->ofs_in_node, len = count;
551 __le32 *addr;
552 int base = 0;
553 bool compressed_cluster = false;
554 int cluster_index = 0, valid_blocks = 0;
555 int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
556 bool released = !atomic_read(&F2FS_I(dn->inode)->i_compr_blocks);
557
558 if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode))
559 base = get_extra_isize(dn->inode);
560
561 raw_node = F2FS_NODE(dn->node_page);
562 addr = blkaddr_in_node(raw_node) + base + ofs;
563
564 /* Assumption: truncateion starts with cluster */
565 for (; count > 0; count--, addr++, dn->ofs_in_node++, cluster_index++) {
566 block_t blkaddr = le32_to_cpu(*addr);
567
568 if (f2fs_compressed_file(dn->inode) &&
569 !(cluster_index & (cluster_size - 1))) {
570 if (compressed_cluster)
571 f2fs_i_compr_blocks_update(dn->inode,
572 valid_blocks, false);
573 compressed_cluster = (blkaddr == COMPRESS_ADDR);
574 valid_blocks = 0;
575 }
576
577 if (blkaddr == NULL_ADDR)
578 continue;
579
580 dn->data_blkaddr = NULL_ADDR;
581 f2fs_set_data_blkaddr(dn);
582
583 if (__is_valid_data_blkaddr(blkaddr)) {
584 if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
585 DATA_GENERIC_ENHANCE))
586 continue;
587 if (compressed_cluster)
588 valid_blocks++;
589 }
590
591 if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page))
592 clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN);
593
594 f2fs_invalidate_blocks(sbi, blkaddr);
595
596 if (!released || blkaddr != COMPRESS_ADDR)
597 nr_free++;
598 }
599
600 if (compressed_cluster)
601 f2fs_i_compr_blocks_update(dn->inode, valid_blocks, false);
602
603 if (nr_free) {
604 pgoff_t fofs;
605 /*
606 * once we invalidate valid blkaddr in range [ofs, ofs + count],
607 * we will invalidate all blkaddr in the whole range.
608 */
609 fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page),
610 dn->inode) + ofs;
611 f2fs_update_extent_cache_range(dn, fofs, 0, len);
612 dec_valid_block_count(sbi, dn->inode, nr_free);
613 }
614 dn->ofs_in_node = ofs;
615
616 f2fs_update_time(sbi, REQ_TIME);
617 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
618 dn->ofs_in_node, nr_free);
619 }
620
f2fs_truncate_data_blocks(struct dnode_of_data * dn)621 void f2fs_truncate_data_blocks(struct dnode_of_data *dn)
622 {
623 f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK(dn->inode));
624 }
625
truncate_partial_data_page(struct inode * inode,u64 from,bool cache_only)626 static int truncate_partial_data_page(struct inode *inode, u64 from,
627 bool cache_only)
628 {
629 loff_t offset = from & (PAGE_SIZE - 1);
630 pgoff_t index = from >> PAGE_SHIFT;
631 struct address_space *mapping = inode->i_mapping;
632 struct page *page;
633
634 if (!offset && !cache_only)
635 return 0;
636
637 if (cache_only) {
638 page = find_lock_page(mapping, index);
639 if (page && PageUptodate(page))
640 goto truncate_out;
641 f2fs_put_page(page, 1);
642 return 0;
643 }
644
645 page = f2fs_get_lock_data_page(inode, index, true);
646 if (IS_ERR(page))
647 return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
648 truncate_out:
649 f2fs_wait_on_page_writeback(page, DATA, true, true);
650 zero_user(page, offset, PAGE_SIZE - offset);
651
652 /* An encrypted inode should have a key and truncate the last page. */
653 f2fs_bug_on(F2FS_I_SB(inode), cache_only && IS_ENCRYPTED(inode));
654 if (!cache_only)
655 set_page_dirty(page);
656 f2fs_put_page(page, 1);
657 return 0;
658 }
659
f2fs_do_truncate_blocks(struct inode * inode,u64 from,bool lock)660 int f2fs_do_truncate_blocks(struct inode *inode, u64 from, bool lock)
661 {
662 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
663 struct dnode_of_data dn;
664 pgoff_t free_from;
665 int count = 0, err = 0;
666 struct page *ipage;
667 bool truncate_page = false;
668
669 trace_f2fs_truncate_blocks_enter(inode, from);
670
671 free_from = (pgoff_t)F2FS_BLK_ALIGN(from);
672
673 if (free_from >= max_file_blocks(inode))
674 goto free_partial;
675
676 if (lock)
677 f2fs_lock_op(sbi);
678
679 ipage = f2fs_get_node_page(sbi, inode->i_ino);
680 if (IS_ERR(ipage)) {
681 err = PTR_ERR(ipage);
682 goto out;
683 }
684
685 if (f2fs_has_inline_data(inode)) {
686 f2fs_truncate_inline_inode(inode, ipage, from);
687 f2fs_put_page(ipage, 1);
688 truncate_page = true;
689 goto out;
690 }
691
692 set_new_dnode(&dn, inode, ipage, NULL, 0);
693 err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
694 if (err) {
695 if (err == -ENOENT)
696 goto free_next;
697 goto out;
698 }
699
700 count = ADDRS_PER_PAGE(dn.node_page, inode);
701
702 count -= dn.ofs_in_node;
703 f2fs_bug_on(sbi, count < 0);
704
705 if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
706 f2fs_truncate_data_blocks_range(&dn, count);
707 free_from += count;
708 }
709
710 f2fs_put_dnode(&dn);
711 free_next:
712 err = f2fs_truncate_inode_blocks(inode, free_from);
713 out:
714 if (lock)
715 f2fs_unlock_op(sbi);
716 free_partial:
717 /* lastly zero out the first data page */
718 if (!err)
719 err = truncate_partial_data_page(inode, from, truncate_page);
720
721 trace_f2fs_truncate_blocks_exit(inode, err);
722 return err;
723 }
724
f2fs_truncate_blocks(struct inode * inode,u64 from,bool lock)725 int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock)
726 {
727 u64 free_from = from;
728 int err;
729
730 #ifdef CONFIG_F2FS_FS_COMPRESSION
731 /*
732 * for compressed file, only support cluster size
733 * aligned truncation.
734 */
735 if (f2fs_compressed_file(inode))
736 free_from = round_up(from,
737 F2FS_I(inode)->i_cluster_size << PAGE_SHIFT);
738 #endif
739
740 err = f2fs_do_truncate_blocks(inode, free_from, lock);
741 if (err)
742 return err;
743
744 #ifdef CONFIG_F2FS_FS_COMPRESSION
745 if (from != free_from) {
746 err = f2fs_truncate_partial_cluster(inode, from, lock);
747 if (err)
748 return err;
749 }
750 #endif
751
752 return 0;
753 }
754
f2fs_truncate(struct inode * inode)755 int f2fs_truncate(struct inode *inode)
756 {
757 int err;
758
759 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
760 return -EIO;
761
762 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
763 S_ISLNK(inode->i_mode)))
764 return 0;
765
766 trace_f2fs_truncate(inode);
767
768 if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) {
769 f2fs_show_injection_info(F2FS_I_SB(inode), FAULT_TRUNCATE);
770 return -EIO;
771 }
772
773 err = dquot_initialize(inode);
774 if (err)
775 return err;
776
777 /* we should check inline_data size */
778 if (!f2fs_may_inline_data(inode)) {
779 err = f2fs_convert_inline_inode(inode);
780 if (err)
781 return err;
782 }
783
784 err = f2fs_truncate_blocks(inode, i_size_read(inode), true);
785 if (err)
786 return err;
787
788 inode->i_mtime = inode->i_ctime = current_time(inode);
789 f2fs_mark_inode_dirty_sync(inode, false);
790 return 0;
791 }
792
f2fs_getattr(struct user_namespace * mnt_userns,const struct path * path,struct kstat * stat,u32 request_mask,unsigned int query_flags)793 int f2fs_getattr(struct user_namespace *mnt_userns, const struct path *path,
794 struct kstat *stat, u32 request_mask, unsigned int query_flags)
795 {
796 struct inode *inode = d_inode(path->dentry);
797 struct f2fs_inode_info *fi = F2FS_I(inode);
798 struct f2fs_inode *ri;
799 unsigned int flags;
800
801 if (f2fs_has_extra_attr(inode) &&
802 f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
803 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
804 stat->result_mask |= STATX_BTIME;
805 stat->btime.tv_sec = fi->i_crtime.tv_sec;
806 stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
807 }
808
809 flags = fi->i_flags;
810 if (flags & F2FS_COMPR_FL)
811 stat->attributes |= STATX_ATTR_COMPRESSED;
812 if (flags & F2FS_APPEND_FL)
813 stat->attributes |= STATX_ATTR_APPEND;
814 if (IS_ENCRYPTED(inode))
815 stat->attributes |= STATX_ATTR_ENCRYPTED;
816 if (flags & F2FS_IMMUTABLE_FL)
817 stat->attributes |= STATX_ATTR_IMMUTABLE;
818 if (flags & F2FS_NODUMP_FL)
819 stat->attributes |= STATX_ATTR_NODUMP;
820 if (IS_VERITY(inode))
821 stat->attributes |= STATX_ATTR_VERITY;
822
823 stat->attributes_mask |= (STATX_ATTR_COMPRESSED |
824 STATX_ATTR_APPEND |
825 STATX_ATTR_ENCRYPTED |
826 STATX_ATTR_IMMUTABLE |
827 STATX_ATTR_NODUMP |
828 STATX_ATTR_VERITY);
829
830 generic_fillattr(&init_user_ns, inode, stat);
831
832 /* we need to show initial sectors used for inline_data/dentries */
833 if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) ||
834 f2fs_has_inline_dentry(inode))
835 stat->blocks += (stat->size + 511) >> 9;
836
837 return 0;
838 }
839
840 #ifdef CONFIG_F2FS_FS_POSIX_ACL
__setattr_copy(struct user_namespace * mnt_userns,struct inode * inode,const struct iattr * attr)841 static void __setattr_copy(struct user_namespace *mnt_userns,
842 struct inode *inode, const struct iattr *attr)
843 {
844 unsigned int ia_valid = attr->ia_valid;
845
846 if (ia_valid & ATTR_UID)
847 inode->i_uid = attr->ia_uid;
848 if (ia_valid & ATTR_GID)
849 inode->i_gid = attr->ia_gid;
850 if (ia_valid & ATTR_ATIME)
851 inode->i_atime = attr->ia_atime;
852 if (ia_valid & ATTR_MTIME)
853 inode->i_mtime = attr->ia_mtime;
854 if (ia_valid & ATTR_CTIME)
855 inode->i_ctime = attr->ia_ctime;
856 if (ia_valid & ATTR_MODE) {
857 umode_t mode = attr->ia_mode;
858 kgid_t kgid = i_gid_into_mnt(mnt_userns, inode);
859
860 if (!in_group_p(kgid) && !capable_wrt_inode_uidgid(mnt_userns, inode, CAP_FSETID))
861 mode &= ~S_ISGID;
862 set_acl_inode(inode, mode);
863 }
864 }
865 #else
866 #define __setattr_copy setattr_copy
867 #endif
868
f2fs_setattr(struct user_namespace * mnt_userns,struct dentry * dentry,struct iattr * attr)869 int f2fs_setattr(struct user_namespace *mnt_userns, struct dentry *dentry,
870 struct iattr *attr)
871 {
872 struct inode *inode = d_inode(dentry);
873 int err;
874
875 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
876 return -EIO;
877
878 if (unlikely(IS_IMMUTABLE(inode)))
879 return -EPERM;
880
881 if (unlikely(IS_APPEND(inode) &&
882 (attr->ia_valid & (ATTR_MODE | ATTR_UID |
883 ATTR_GID | ATTR_TIMES_SET))))
884 return -EPERM;
885
886 if ((attr->ia_valid & ATTR_SIZE) &&
887 !f2fs_is_compress_backend_ready(inode))
888 return -EOPNOTSUPP;
889
890 err = setattr_prepare(&init_user_ns, dentry, attr);
891 if (err)
892 return err;
893
894 err = fscrypt_prepare_setattr(dentry, attr);
895 if (err)
896 return err;
897
898 err = fsverity_prepare_setattr(dentry, attr);
899 if (err)
900 return err;
901
902 if (is_quota_modification(inode, attr)) {
903 err = dquot_initialize(inode);
904 if (err)
905 return err;
906 }
907 if ((attr->ia_valid & ATTR_UID &&
908 !uid_eq(attr->ia_uid, inode->i_uid)) ||
909 (attr->ia_valid & ATTR_GID &&
910 !gid_eq(attr->ia_gid, inode->i_gid))) {
911 f2fs_lock_op(F2FS_I_SB(inode));
912 err = dquot_transfer(inode, attr);
913 if (err) {
914 set_sbi_flag(F2FS_I_SB(inode),
915 SBI_QUOTA_NEED_REPAIR);
916 f2fs_unlock_op(F2FS_I_SB(inode));
917 return err;
918 }
919 /*
920 * update uid/gid under lock_op(), so that dquot and inode can
921 * be updated atomically.
922 */
923 if (attr->ia_valid & ATTR_UID)
924 inode->i_uid = attr->ia_uid;
925 if (attr->ia_valid & ATTR_GID)
926 inode->i_gid = attr->ia_gid;
927 f2fs_mark_inode_dirty_sync(inode, true);
928 f2fs_unlock_op(F2FS_I_SB(inode));
929 }
930
931 if (attr->ia_valid & ATTR_SIZE) {
932 loff_t old_size = i_size_read(inode);
933
934 if (attr->ia_size > MAX_INLINE_DATA(inode)) {
935 /*
936 * should convert inline inode before i_size_write to
937 * keep smaller than inline_data size with inline flag.
938 */
939 err = f2fs_convert_inline_inode(inode);
940 if (err)
941 return err;
942 }
943
944 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
945 down_write(&F2FS_I(inode)->i_mmap_sem);
946
947 truncate_setsize(inode, attr->ia_size);
948
949 if (attr->ia_size <= old_size)
950 err = f2fs_truncate(inode);
951 /*
952 * do not trim all blocks after i_size if target size is
953 * larger than i_size.
954 */
955 up_write(&F2FS_I(inode)->i_mmap_sem);
956 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
957 if (err)
958 return err;
959
960 spin_lock(&F2FS_I(inode)->i_size_lock);
961 inode->i_mtime = inode->i_ctime = current_time(inode);
962 F2FS_I(inode)->last_disk_size = i_size_read(inode);
963 spin_unlock(&F2FS_I(inode)->i_size_lock);
964 }
965
966 __setattr_copy(&init_user_ns, inode, attr);
967
968 if (attr->ia_valid & ATTR_MODE) {
969 err = posix_acl_chmod(&init_user_ns, inode, f2fs_get_inode_mode(inode));
970
971 if (is_inode_flag_set(inode, FI_ACL_MODE)) {
972 if (!err)
973 inode->i_mode = F2FS_I(inode)->i_acl_mode;
974 clear_inode_flag(inode, FI_ACL_MODE);
975 }
976 }
977
978 /* file size may changed here */
979 f2fs_mark_inode_dirty_sync(inode, true);
980
981 /* inode change will produce dirty node pages flushed by checkpoint */
982 f2fs_balance_fs(F2FS_I_SB(inode), true);
983
984 return err;
985 }
986
987 const struct inode_operations f2fs_file_inode_operations = {
988 .getattr = f2fs_getattr,
989 .setattr = f2fs_setattr,
990 .get_acl = f2fs_get_acl,
991 .set_acl = f2fs_set_acl,
992 .listxattr = f2fs_listxattr,
993 .fiemap = f2fs_fiemap,
994 .fileattr_get = f2fs_fileattr_get,
995 .fileattr_set = f2fs_fileattr_set,
996 };
997
fill_zero(struct inode * inode,pgoff_t index,loff_t start,loff_t len)998 static int fill_zero(struct inode *inode, pgoff_t index,
999 loff_t start, loff_t len)
1000 {
1001 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1002 struct page *page;
1003
1004 if (!len)
1005 return 0;
1006
1007 f2fs_balance_fs(sbi, true);
1008
1009 f2fs_lock_op(sbi);
1010 page = f2fs_get_new_data_page(inode, NULL, index, false);
1011 f2fs_unlock_op(sbi);
1012
1013 if (IS_ERR(page))
1014 return PTR_ERR(page);
1015
1016 f2fs_wait_on_page_writeback(page, DATA, true, true);
1017 zero_user(page, start, len);
1018 set_page_dirty(page);
1019 f2fs_put_page(page, 1);
1020 return 0;
1021 }
1022
f2fs_truncate_hole(struct inode * inode,pgoff_t pg_start,pgoff_t pg_end)1023 int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
1024 {
1025 int err;
1026
1027 while (pg_start < pg_end) {
1028 struct dnode_of_data dn;
1029 pgoff_t end_offset, count;
1030
1031 set_new_dnode(&dn, inode, NULL, NULL, 0);
1032 err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
1033 if (err) {
1034 if (err == -ENOENT) {
1035 pg_start = f2fs_get_next_page_offset(&dn,
1036 pg_start);
1037 continue;
1038 }
1039 return err;
1040 }
1041
1042 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1043 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
1044
1045 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
1046
1047 f2fs_truncate_data_blocks_range(&dn, count);
1048 f2fs_put_dnode(&dn);
1049
1050 pg_start += count;
1051 }
1052 return 0;
1053 }
1054
punch_hole(struct inode * inode,loff_t offset,loff_t len)1055 static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
1056 {
1057 pgoff_t pg_start, pg_end;
1058 loff_t off_start, off_end;
1059 int ret;
1060
1061 ret = f2fs_convert_inline_inode(inode);
1062 if (ret)
1063 return ret;
1064
1065 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1066 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
1067
1068 off_start = offset & (PAGE_SIZE - 1);
1069 off_end = (offset + len) & (PAGE_SIZE - 1);
1070
1071 if (pg_start == pg_end) {
1072 ret = fill_zero(inode, pg_start, off_start,
1073 off_end - off_start);
1074 if (ret)
1075 return ret;
1076 } else {
1077 if (off_start) {
1078 ret = fill_zero(inode, pg_start++, off_start,
1079 PAGE_SIZE - off_start);
1080 if (ret)
1081 return ret;
1082 }
1083 if (off_end) {
1084 ret = fill_zero(inode, pg_end, 0, off_end);
1085 if (ret)
1086 return ret;
1087 }
1088
1089 if (pg_start < pg_end) {
1090 struct address_space *mapping = inode->i_mapping;
1091 loff_t blk_start, blk_end;
1092 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1093
1094 f2fs_balance_fs(sbi, true);
1095
1096 blk_start = (loff_t)pg_start << PAGE_SHIFT;
1097 blk_end = (loff_t)pg_end << PAGE_SHIFT;
1098
1099 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1100 down_write(&F2FS_I(inode)->i_mmap_sem);
1101
1102 truncate_inode_pages_range(mapping, blk_start,
1103 blk_end - 1);
1104
1105 f2fs_lock_op(sbi);
1106 ret = f2fs_truncate_hole(inode, pg_start, pg_end);
1107 f2fs_unlock_op(sbi);
1108
1109 up_write(&F2FS_I(inode)->i_mmap_sem);
1110 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1111 }
1112 }
1113
1114 return ret;
1115 }
1116
__read_out_blkaddrs(struct inode * inode,block_t * blkaddr,int * do_replace,pgoff_t off,pgoff_t len)1117 static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr,
1118 int *do_replace, pgoff_t off, pgoff_t len)
1119 {
1120 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1121 struct dnode_of_data dn;
1122 int ret, done, i;
1123
1124 next_dnode:
1125 set_new_dnode(&dn, inode, NULL, NULL, 0);
1126 ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA);
1127 if (ret && ret != -ENOENT) {
1128 return ret;
1129 } else if (ret == -ENOENT) {
1130 if (dn.max_level == 0)
1131 return -ENOENT;
1132 done = min((pgoff_t)ADDRS_PER_BLOCK(inode) -
1133 dn.ofs_in_node, len);
1134 blkaddr += done;
1135 do_replace += done;
1136 goto next;
1137 }
1138
1139 done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) -
1140 dn.ofs_in_node, len);
1141 for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) {
1142 *blkaddr = f2fs_data_blkaddr(&dn);
1143
1144 if (__is_valid_data_blkaddr(*blkaddr) &&
1145 !f2fs_is_valid_blkaddr(sbi, *blkaddr,
1146 DATA_GENERIC_ENHANCE)) {
1147 f2fs_put_dnode(&dn);
1148 return -EFSCORRUPTED;
1149 }
1150
1151 if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) {
1152
1153 if (f2fs_lfs_mode(sbi)) {
1154 f2fs_put_dnode(&dn);
1155 return -EOPNOTSUPP;
1156 }
1157
1158 /* do not invalidate this block address */
1159 f2fs_update_data_blkaddr(&dn, NULL_ADDR);
1160 *do_replace = 1;
1161 }
1162 }
1163 f2fs_put_dnode(&dn);
1164 next:
1165 len -= done;
1166 off += done;
1167 if (len)
1168 goto next_dnode;
1169 return 0;
1170 }
1171
__roll_back_blkaddrs(struct inode * inode,block_t * blkaddr,int * do_replace,pgoff_t off,int len)1172 static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr,
1173 int *do_replace, pgoff_t off, int len)
1174 {
1175 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1176 struct dnode_of_data dn;
1177 int ret, i;
1178
1179 for (i = 0; i < len; i++, do_replace++, blkaddr++) {
1180 if (*do_replace == 0)
1181 continue;
1182
1183 set_new_dnode(&dn, inode, NULL, NULL, 0);
1184 ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA);
1185 if (ret) {
1186 dec_valid_block_count(sbi, inode, 1);
1187 f2fs_invalidate_blocks(sbi, *blkaddr);
1188 } else {
1189 f2fs_update_data_blkaddr(&dn, *blkaddr);
1190 }
1191 f2fs_put_dnode(&dn);
1192 }
1193 return 0;
1194 }
1195
__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)1196 static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode,
1197 block_t *blkaddr, int *do_replace,
1198 pgoff_t src, pgoff_t dst, pgoff_t len, bool full)
1199 {
1200 struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode);
1201 pgoff_t i = 0;
1202 int ret;
1203
1204 while (i < len) {
1205 if (blkaddr[i] == NULL_ADDR && !full) {
1206 i++;
1207 continue;
1208 }
1209
1210 if (do_replace[i] || blkaddr[i] == NULL_ADDR) {
1211 struct dnode_of_data dn;
1212 struct node_info ni;
1213 size_t new_size;
1214 pgoff_t ilen;
1215
1216 set_new_dnode(&dn, dst_inode, NULL, NULL, 0);
1217 ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE);
1218 if (ret)
1219 return ret;
1220
1221 ret = f2fs_get_node_info(sbi, dn.nid, &ni);
1222 if (ret) {
1223 f2fs_put_dnode(&dn);
1224 return ret;
1225 }
1226
1227 ilen = min((pgoff_t)
1228 ADDRS_PER_PAGE(dn.node_page, dst_inode) -
1229 dn.ofs_in_node, len - i);
1230 do {
1231 dn.data_blkaddr = f2fs_data_blkaddr(&dn);
1232 f2fs_truncate_data_blocks_range(&dn, 1);
1233
1234 if (do_replace[i]) {
1235 f2fs_i_blocks_write(src_inode,
1236 1, false, false);
1237 f2fs_i_blocks_write(dst_inode,
1238 1, true, false);
1239 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
1240 blkaddr[i], ni.version, true, false);
1241
1242 do_replace[i] = 0;
1243 }
1244 dn.ofs_in_node++;
1245 i++;
1246 new_size = (loff_t)(dst + i) << PAGE_SHIFT;
1247 if (dst_inode->i_size < new_size)
1248 f2fs_i_size_write(dst_inode, new_size);
1249 } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR));
1250
1251 f2fs_put_dnode(&dn);
1252 } else {
1253 struct page *psrc, *pdst;
1254
1255 psrc = f2fs_get_lock_data_page(src_inode,
1256 src + i, true);
1257 if (IS_ERR(psrc))
1258 return PTR_ERR(psrc);
1259 pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i,
1260 true);
1261 if (IS_ERR(pdst)) {
1262 f2fs_put_page(psrc, 1);
1263 return PTR_ERR(pdst);
1264 }
1265 f2fs_copy_page(psrc, pdst);
1266 set_page_dirty(pdst);
1267 f2fs_put_page(pdst, 1);
1268 f2fs_put_page(psrc, 1);
1269
1270 ret = f2fs_truncate_hole(src_inode,
1271 src + i, src + i + 1);
1272 if (ret)
1273 return ret;
1274 i++;
1275 }
1276 }
1277 return 0;
1278 }
1279
__exchange_data_block(struct inode * src_inode,struct inode * dst_inode,pgoff_t src,pgoff_t dst,pgoff_t len,bool full)1280 static int __exchange_data_block(struct inode *src_inode,
1281 struct inode *dst_inode, pgoff_t src, pgoff_t dst,
1282 pgoff_t len, bool full)
1283 {
1284 block_t *src_blkaddr;
1285 int *do_replace;
1286 pgoff_t olen;
1287 int ret;
1288
1289 while (len) {
1290 olen = min((pgoff_t)4 * ADDRS_PER_BLOCK(src_inode), len);
1291
1292 src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1293 array_size(olen, sizeof(block_t)),
1294 GFP_NOFS);
1295 if (!src_blkaddr)
1296 return -ENOMEM;
1297
1298 do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1299 array_size(olen, sizeof(int)),
1300 GFP_NOFS);
1301 if (!do_replace) {
1302 kvfree(src_blkaddr);
1303 return -ENOMEM;
1304 }
1305
1306 ret = __read_out_blkaddrs(src_inode, src_blkaddr,
1307 do_replace, src, olen);
1308 if (ret)
1309 goto roll_back;
1310
1311 ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr,
1312 do_replace, src, dst, olen, full);
1313 if (ret)
1314 goto roll_back;
1315
1316 src += olen;
1317 dst += olen;
1318 len -= olen;
1319
1320 kvfree(src_blkaddr);
1321 kvfree(do_replace);
1322 }
1323 return 0;
1324
1325 roll_back:
1326 __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen);
1327 kvfree(src_blkaddr);
1328 kvfree(do_replace);
1329 return ret;
1330 }
1331
f2fs_do_collapse(struct inode * inode,loff_t offset,loff_t len)1332 static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len)
1333 {
1334 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1335 pgoff_t nrpages = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
1336 pgoff_t start = offset >> PAGE_SHIFT;
1337 pgoff_t end = (offset + len) >> PAGE_SHIFT;
1338 int ret;
1339
1340 f2fs_balance_fs(sbi, true);
1341
1342 /* avoid gc operation during block exchange */
1343 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1344 down_write(&F2FS_I(inode)->i_mmap_sem);
1345
1346 f2fs_lock_op(sbi);
1347 f2fs_drop_extent_tree(inode);
1348 truncate_pagecache(inode, offset);
1349 ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
1350 f2fs_unlock_op(sbi);
1351
1352 up_write(&F2FS_I(inode)->i_mmap_sem);
1353 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1354 return ret;
1355 }
1356
f2fs_collapse_range(struct inode * inode,loff_t offset,loff_t len)1357 static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
1358 {
1359 loff_t new_size;
1360 int ret;
1361
1362 if (offset + len >= i_size_read(inode))
1363 return -EINVAL;
1364
1365 /* collapse range should be aligned to block size of f2fs. */
1366 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1367 return -EINVAL;
1368
1369 ret = f2fs_convert_inline_inode(inode);
1370 if (ret)
1371 return ret;
1372
1373 /* write out all dirty pages from offset */
1374 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1375 if (ret)
1376 return ret;
1377
1378 ret = f2fs_do_collapse(inode, offset, len);
1379 if (ret)
1380 return ret;
1381
1382 /* write out all moved pages, if possible */
1383 down_write(&F2FS_I(inode)->i_mmap_sem);
1384 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1385 truncate_pagecache(inode, offset);
1386
1387 new_size = i_size_read(inode) - len;
1388 ret = f2fs_truncate_blocks(inode, new_size, true);
1389 up_write(&F2FS_I(inode)->i_mmap_sem);
1390 if (!ret)
1391 f2fs_i_size_write(inode, new_size);
1392 return ret;
1393 }
1394
f2fs_do_zero_range(struct dnode_of_data * dn,pgoff_t start,pgoff_t end)1395 static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start,
1396 pgoff_t end)
1397 {
1398 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1399 pgoff_t index = start;
1400 unsigned int ofs_in_node = dn->ofs_in_node;
1401 blkcnt_t count = 0;
1402 int ret;
1403
1404 for (; index < end; index++, dn->ofs_in_node++) {
1405 if (f2fs_data_blkaddr(dn) == NULL_ADDR)
1406 count++;
1407 }
1408
1409 dn->ofs_in_node = ofs_in_node;
1410 ret = f2fs_reserve_new_blocks(dn, count);
1411 if (ret)
1412 return ret;
1413
1414 dn->ofs_in_node = ofs_in_node;
1415 for (index = start; index < end; index++, dn->ofs_in_node++) {
1416 dn->data_blkaddr = f2fs_data_blkaddr(dn);
1417 /*
1418 * f2fs_reserve_new_blocks will not guarantee entire block
1419 * allocation.
1420 */
1421 if (dn->data_blkaddr == NULL_ADDR) {
1422 ret = -ENOSPC;
1423 break;
1424 }
1425 if (dn->data_blkaddr != NEW_ADDR) {
1426 f2fs_invalidate_blocks(sbi, dn->data_blkaddr);
1427 dn->data_blkaddr = NEW_ADDR;
1428 f2fs_set_data_blkaddr(dn);
1429 }
1430 }
1431
1432 f2fs_update_extent_cache_range(dn, start, 0, index - start);
1433
1434 return ret;
1435 }
1436
f2fs_zero_range(struct inode * inode,loff_t offset,loff_t len,int mode)1437 static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
1438 int mode)
1439 {
1440 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1441 struct address_space *mapping = inode->i_mapping;
1442 pgoff_t index, pg_start, pg_end;
1443 loff_t new_size = i_size_read(inode);
1444 loff_t off_start, off_end;
1445 int ret = 0;
1446
1447 ret = inode_newsize_ok(inode, (len + offset));
1448 if (ret)
1449 return ret;
1450
1451 ret = f2fs_convert_inline_inode(inode);
1452 if (ret)
1453 return ret;
1454
1455 ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
1456 if (ret)
1457 return ret;
1458
1459 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1460 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
1461
1462 off_start = offset & (PAGE_SIZE - 1);
1463 off_end = (offset + len) & (PAGE_SIZE - 1);
1464
1465 if (pg_start == pg_end) {
1466 ret = fill_zero(inode, pg_start, off_start,
1467 off_end - off_start);
1468 if (ret)
1469 return ret;
1470
1471 new_size = max_t(loff_t, new_size, offset + len);
1472 } else {
1473 if (off_start) {
1474 ret = fill_zero(inode, pg_start++, off_start,
1475 PAGE_SIZE - off_start);
1476 if (ret)
1477 return ret;
1478
1479 new_size = max_t(loff_t, new_size,
1480 (loff_t)pg_start << PAGE_SHIFT);
1481 }
1482
1483 for (index = pg_start; index < pg_end;) {
1484 struct dnode_of_data dn;
1485 unsigned int end_offset;
1486 pgoff_t end;
1487
1488 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1489 down_write(&F2FS_I(inode)->i_mmap_sem);
1490
1491 truncate_pagecache_range(inode,
1492 (loff_t)index << PAGE_SHIFT,
1493 ((loff_t)pg_end << PAGE_SHIFT) - 1);
1494
1495 f2fs_lock_op(sbi);
1496
1497 set_new_dnode(&dn, inode, NULL, NULL, 0);
1498 ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE);
1499 if (ret) {
1500 f2fs_unlock_op(sbi);
1501 up_write(&F2FS_I(inode)->i_mmap_sem);
1502 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1503 goto out;
1504 }
1505
1506 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1507 end = min(pg_end, end_offset - dn.ofs_in_node + index);
1508
1509 ret = f2fs_do_zero_range(&dn, index, end);
1510 f2fs_put_dnode(&dn);
1511
1512 f2fs_unlock_op(sbi);
1513 up_write(&F2FS_I(inode)->i_mmap_sem);
1514 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1515
1516 f2fs_balance_fs(sbi, dn.node_changed);
1517
1518 if (ret)
1519 goto out;
1520
1521 index = end;
1522 new_size = max_t(loff_t, new_size,
1523 (loff_t)index << PAGE_SHIFT);
1524 }
1525
1526 if (off_end) {
1527 ret = fill_zero(inode, pg_end, 0, off_end);
1528 if (ret)
1529 goto out;
1530
1531 new_size = max_t(loff_t, new_size, offset + len);
1532 }
1533 }
1534
1535 out:
1536 if (new_size > i_size_read(inode)) {
1537 if (mode & FALLOC_FL_KEEP_SIZE)
1538 file_set_keep_isize(inode);
1539 else
1540 f2fs_i_size_write(inode, new_size);
1541 }
1542 return ret;
1543 }
1544
f2fs_insert_range(struct inode * inode,loff_t offset,loff_t len)1545 static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
1546 {
1547 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1548 pgoff_t nr, pg_start, pg_end, delta, idx;
1549 loff_t new_size;
1550 int ret = 0;
1551
1552 new_size = i_size_read(inode) + len;
1553 ret = inode_newsize_ok(inode, new_size);
1554 if (ret)
1555 return ret;
1556
1557 if (offset >= i_size_read(inode))
1558 return -EINVAL;
1559
1560 /* insert range should be aligned to block size of f2fs. */
1561 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1562 return -EINVAL;
1563
1564 ret = f2fs_convert_inline_inode(inode);
1565 if (ret)
1566 return ret;
1567
1568 f2fs_balance_fs(sbi, true);
1569
1570 down_write(&F2FS_I(inode)->i_mmap_sem);
1571 ret = f2fs_truncate_blocks(inode, i_size_read(inode), true);
1572 up_write(&F2FS_I(inode)->i_mmap_sem);
1573 if (ret)
1574 return ret;
1575
1576 /* write out all dirty pages from offset */
1577 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1578 if (ret)
1579 return ret;
1580
1581 pg_start = offset >> PAGE_SHIFT;
1582 pg_end = (offset + len) >> PAGE_SHIFT;
1583 delta = pg_end - pg_start;
1584 idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
1585
1586 /* avoid gc operation during block exchange */
1587 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1588 down_write(&F2FS_I(inode)->i_mmap_sem);
1589 truncate_pagecache(inode, offset);
1590
1591 while (!ret && idx > pg_start) {
1592 nr = idx - pg_start;
1593 if (nr > delta)
1594 nr = delta;
1595 idx -= nr;
1596
1597 f2fs_lock_op(sbi);
1598 f2fs_drop_extent_tree(inode);
1599
1600 ret = __exchange_data_block(inode, inode, idx,
1601 idx + delta, nr, false);
1602 f2fs_unlock_op(sbi);
1603 }
1604 up_write(&F2FS_I(inode)->i_mmap_sem);
1605 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1606
1607 /* write out all moved pages, if possible */
1608 down_write(&F2FS_I(inode)->i_mmap_sem);
1609 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1610 truncate_pagecache(inode, offset);
1611 up_write(&F2FS_I(inode)->i_mmap_sem);
1612
1613 if (!ret)
1614 f2fs_i_size_write(inode, new_size);
1615 return ret;
1616 }
1617
expand_inode_data(struct inode * inode,loff_t offset,loff_t len,int mode)1618 static int expand_inode_data(struct inode *inode, loff_t offset,
1619 loff_t len, int mode)
1620 {
1621 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1622 struct f2fs_map_blocks map = { .m_next_pgofs = NULL,
1623 .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE,
1624 .m_may_create = true };
1625 pgoff_t pg_start, pg_end;
1626 loff_t new_size = i_size_read(inode);
1627 loff_t off_end;
1628 block_t expanded = 0;
1629 int err;
1630
1631 err = inode_newsize_ok(inode, (len + offset));
1632 if (err)
1633 return err;
1634
1635 err = f2fs_convert_inline_inode(inode);
1636 if (err)
1637 return err;
1638
1639 f2fs_balance_fs(sbi, true);
1640
1641 pg_start = ((unsigned long long)offset) >> PAGE_SHIFT;
1642 pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT;
1643 off_end = (offset + len) & (PAGE_SIZE - 1);
1644
1645 map.m_lblk = pg_start;
1646 map.m_len = pg_end - pg_start;
1647 if (off_end)
1648 map.m_len++;
1649
1650 if (!map.m_len)
1651 return 0;
1652
1653 if (f2fs_is_pinned_file(inode)) {
1654 block_t sec_blks = BLKS_PER_SEC(sbi);
1655 block_t sec_len = roundup(map.m_len, sec_blks);
1656
1657 map.m_len = sec_blks;
1658 next_alloc:
1659 if (has_not_enough_free_secs(sbi, 0,
1660 GET_SEC_FROM_SEG(sbi, overprovision_segments(sbi)))) {
1661 down_write(&sbi->gc_lock);
1662 err = f2fs_gc(sbi, true, false, false, NULL_SEGNO);
1663 if (err && err != -ENODATA && err != -EAGAIN)
1664 goto out_err;
1665 }
1666
1667 down_write(&sbi->pin_sem);
1668
1669 f2fs_lock_op(sbi);
1670 f2fs_allocate_new_section(sbi, CURSEG_COLD_DATA_PINNED, false);
1671 f2fs_unlock_op(sbi);
1672
1673 map.m_seg_type = CURSEG_COLD_DATA_PINNED;
1674 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_DIO);
1675
1676 up_write(&sbi->pin_sem);
1677
1678 expanded += map.m_len;
1679 sec_len -= map.m_len;
1680 map.m_lblk += map.m_len;
1681 if (!err && sec_len)
1682 goto next_alloc;
1683
1684 map.m_len = expanded;
1685 } else {
1686 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
1687 expanded = map.m_len;
1688 }
1689 out_err:
1690 if (err) {
1691 pgoff_t last_off;
1692
1693 if (!expanded)
1694 return err;
1695
1696 last_off = pg_start + expanded - 1;
1697
1698 /* update new size to the failed position */
1699 new_size = (last_off == pg_end) ? offset + len :
1700 (loff_t)(last_off + 1) << PAGE_SHIFT;
1701 } else {
1702 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
1703 }
1704
1705 if (new_size > i_size_read(inode)) {
1706 if (mode & FALLOC_FL_KEEP_SIZE)
1707 file_set_keep_isize(inode);
1708 else
1709 f2fs_i_size_write(inode, new_size);
1710 }
1711
1712 return err;
1713 }
1714
f2fs_fallocate(struct file * file,int mode,loff_t offset,loff_t len)1715 static long f2fs_fallocate(struct file *file, int mode,
1716 loff_t offset, loff_t len)
1717 {
1718 struct inode *inode = file_inode(file);
1719 long ret = 0;
1720
1721 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
1722 return -EIO;
1723 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode)))
1724 return -ENOSPC;
1725 if (!f2fs_is_compress_backend_ready(inode))
1726 return -EOPNOTSUPP;
1727
1728 /* f2fs only support ->fallocate for regular file */
1729 if (!S_ISREG(inode->i_mode))
1730 return -EINVAL;
1731
1732 if (IS_ENCRYPTED(inode) &&
1733 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
1734 return -EOPNOTSUPP;
1735
1736 if (f2fs_compressed_file(inode) &&
1737 (mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE |
1738 FALLOC_FL_ZERO_RANGE | FALLOC_FL_INSERT_RANGE)))
1739 return -EOPNOTSUPP;
1740
1741 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
1742 FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1743 FALLOC_FL_INSERT_RANGE))
1744 return -EOPNOTSUPP;
1745
1746 inode_lock(inode);
1747
1748 if (mode & FALLOC_FL_PUNCH_HOLE) {
1749 if (offset >= inode->i_size)
1750 goto out;
1751
1752 ret = punch_hole(inode, offset, len);
1753 } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1754 ret = f2fs_collapse_range(inode, offset, len);
1755 } else if (mode & FALLOC_FL_ZERO_RANGE) {
1756 ret = f2fs_zero_range(inode, offset, len, mode);
1757 } else if (mode & FALLOC_FL_INSERT_RANGE) {
1758 ret = f2fs_insert_range(inode, offset, len);
1759 } else {
1760 ret = expand_inode_data(inode, offset, len, mode);
1761 }
1762
1763 if (!ret) {
1764 inode->i_mtime = inode->i_ctime = current_time(inode);
1765 f2fs_mark_inode_dirty_sync(inode, false);
1766 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1767 }
1768
1769 out:
1770 inode_unlock(inode);
1771
1772 trace_f2fs_fallocate(inode, mode, offset, len, ret);
1773 return ret;
1774 }
1775
f2fs_release_file(struct inode * inode,struct file * filp)1776 static int f2fs_release_file(struct inode *inode, struct file *filp)
1777 {
1778 /*
1779 * f2fs_relase_file is called at every close calls. So we should
1780 * not drop any inmemory pages by close called by other process.
1781 */
1782 if (!(filp->f_mode & FMODE_WRITE) ||
1783 atomic_read(&inode->i_writecount) != 1)
1784 return 0;
1785
1786 /* some remained atomic pages should discarded */
1787 if (f2fs_is_atomic_file(inode))
1788 f2fs_drop_inmem_pages(inode);
1789 if (f2fs_is_volatile_file(inode)) {
1790 set_inode_flag(inode, FI_DROP_CACHE);
1791 filemap_fdatawrite(inode->i_mapping);
1792 clear_inode_flag(inode, FI_DROP_CACHE);
1793 clear_inode_flag(inode, FI_VOLATILE_FILE);
1794 stat_dec_volatile_write(inode);
1795 }
1796 return 0;
1797 }
1798
f2fs_file_flush(struct file * file,fl_owner_t id)1799 static int f2fs_file_flush(struct file *file, fl_owner_t id)
1800 {
1801 struct inode *inode = file_inode(file);
1802
1803 /*
1804 * If the process doing a transaction is crashed, we should do
1805 * roll-back. Otherwise, other reader/write can see corrupted database
1806 * until all the writers close its file. Since this should be done
1807 * before dropping file lock, it needs to do in ->flush.
1808 */
1809 if (f2fs_is_atomic_file(inode) &&
1810 F2FS_I(inode)->inmem_task == current)
1811 f2fs_drop_inmem_pages(inode);
1812 return 0;
1813 }
1814
f2fs_setflags_common(struct inode * inode,u32 iflags,u32 mask)1815 static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask)
1816 {
1817 struct f2fs_inode_info *fi = F2FS_I(inode);
1818 u32 masked_flags = fi->i_flags & mask;
1819
1820 /* mask can be shrunk by flags_valid selector */
1821 iflags &= mask;
1822
1823 /* Is it quota file? Do not allow user to mess with it */
1824 if (IS_NOQUOTA(inode))
1825 return -EPERM;
1826
1827 if ((iflags ^ masked_flags) & F2FS_CASEFOLD_FL) {
1828 if (!f2fs_sb_has_casefold(F2FS_I_SB(inode)))
1829 return -EOPNOTSUPP;
1830 if (!f2fs_empty_dir(inode))
1831 return -ENOTEMPTY;
1832 }
1833
1834 if (iflags & (F2FS_COMPR_FL | F2FS_NOCOMP_FL)) {
1835 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
1836 return -EOPNOTSUPP;
1837 if ((iflags & F2FS_COMPR_FL) && (iflags & F2FS_NOCOMP_FL))
1838 return -EINVAL;
1839 }
1840
1841 if ((iflags ^ masked_flags) & F2FS_COMPR_FL) {
1842 if (masked_flags & F2FS_COMPR_FL) {
1843 if (!f2fs_disable_compressed_file(inode))
1844 return -EINVAL;
1845 }
1846 if (iflags & F2FS_NOCOMP_FL)
1847 return -EINVAL;
1848 if (iflags & F2FS_COMPR_FL) {
1849 if (!f2fs_may_compress(inode))
1850 return -EINVAL;
1851 if (S_ISREG(inode->i_mode) && inode->i_size)
1852 return -EINVAL;
1853
1854 set_compress_context(inode);
1855 }
1856 }
1857 if ((iflags ^ masked_flags) & F2FS_NOCOMP_FL) {
1858 if (masked_flags & F2FS_COMPR_FL)
1859 return -EINVAL;
1860 }
1861
1862 fi->i_flags = iflags | (fi->i_flags & ~mask);
1863 f2fs_bug_on(F2FS_I_SB(inode), (fi->i_flags & F2FS_COMPR_FL) &&
1864 (fi->i_flags & F2FS_NOCOMP_FL));
1865
1866 if (fi->i_flags & F2FS_PROJINHERIT_FL)
1867 set_inode_flag(inode, FI_PROJ_INHERIT);
1868 else
1869 clear_inode_flag(inode, FI_PROJ_INHERIT);
1870
1871 inode->i_ctime = current_time(inode);
1872 f2fs_set_inode_flags(inode);
1873 f2fs_mark_inode_dirty_sync(inode, true);
1874 return 0;
1875 }
1876
1877 /* FS_IOC_[GS]ETFLAGS and FS_IOC_FS[GS]ETXATTR support */
1878
1879 /*
1880 * To make a new on-disk f2fs i_flag gettable via FS_IOC_GETFLAGS, add an entry
1881 * for it to f2fs_fsflags_map[], and add its FS_*_FL equivalent to
1882 * F2FS_GETTABLE_FS_FL. To also make it settable via FS_IOC_SETFLAGS, also add
1883 * its FS_*_FL equivalent to F2FS_SETTABLE_FS_FL.
1884 *
1885 * Translating flags to fsx_flags value used by FS_IOC_FSGETXATTR and
1886 * FS_IOC_FSSETXATTR is done by the VFS.
1887 */
1888
1889 static const struct {
1890 u32 iflag;
1891 u32 fsflag;
1892 } f2fs_fsflags_map[] = {
1893 { F2FS_COMPR_FL, FS_COMPR_FL },
1894 { F2FS_SYNC_FL, FS_SYNC_FL },
1895 { F2FS_IMMUTABLE_FL, FS_IMMUTABLE_FL },
1896 { F2FS_APPEND_FL, FS_APPEND_FL },
1897 { F2FS_NODUMP_FL, FS_NODUMP_FL },
1898 { F2FS_NOATIME_FL, FS_NOATIME_FL },
1899 { F2FS_NOCOMP_FL, FS_NOCOMP_FL },
1900 { F2FS_INDEX_FL, FS_INDEX_FL },
1901 { F2FS_DIRSYNC_FL, FS_DIRSYNC_FL },
1902 { F2FS_PROJINHERIT_FL, FS_PROJINHERIT_FL },
1903 { F2FS_CASEFOLD_FL, FS_CASEFOLD_FL },
1904 };
1905
1906 #define F2FS_GETTABLE_FS_FL ( \
1907 FS_COMPR_FL | \
1908 FS_SYNC_FL | \
1909 FS_IMMUTABLE_FL | \
1910 FS_APPEND_FL | \
1911 FS_NODUMP_FL | \
1912 FS_NOATIME_FL | \
1913 FS_NOCOMP_FL | \
1914 FS_INDEX_FL | \
1915 FS_DIRSYNC_FL | \
1916 FS_PROJINHERIT_FL | \
1917 FS_ENCRYPT_FL | \
1918 FS_INLINE_DATA_FL | \
1919 FS_NOCOW_FL | \
1920 FS_VERITY_FL | \
1921 FS_CASEFOLD_FL)
1922
1923 #define F2FS_SETTABLE_FS_FL ( \
1924 FS_COMPR_FL | \
1925 FS_SYNC_FL | \
1926 FS_IMMUTABLE_FL | \
1927 FS_APPEND_FL | \
1928 FS_NODUMP_FL | \
1929 FS_NOATIME_FL | \
1930 FS_NOCOMP_FL | \
1931 FS_DIRSYNC_FL | \
1932 FS_PROJINHERIT_FL | \
1933 FS_CASEFOLD_FL)
1934
1935 /* Convert f2fs on-disk i_flags to FS_IOC_{GET,SET}FLAGS flags */
f2fs_iflags_to_fsflags(u32 iflags)1936 static inline u32 f2fs_iflags_to_fsflags(u32 iflags)
1937 {
1938 u32 fsflags = 0;
1939 int i;
1940
1941 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1942 if (iflags & f2fs_fsflags_map[i].iflag)
1943 fsflags |= f2fs_fsflags_map[i].fsflag;
1944
1945 return fsflags;
1946 }
1947
1948 /* Convert FS_IOC_{GET,SET}FLAGS flags to f2fs on-disk i_flags */
f2fs_fsflags_to_iflags(u32 fsflags)1949 static inline u32 f2fs_fsflags_to_iflags(u32 fsflags)
1950 {
1951 u32 iflags = 0;
1952 int i;
1953
1954 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1955 if (fsflags & f2fs_fsflags_map[i].fsflag)
1956 iflags |= f2fs_fsflags_map[i].iflag;
1957
1958 return iflags;
1959 }
1960
f2fs_ioc_getversion(struct file * filp,unsigned long arg)1961 static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
1962 {
1963 struct inode *inode = file_inode(filp);
1964
1965 return put_user(inode->i_generation, (int __user *)arg);
1966 }
1967
f2fs_ioc_start_atomic_write(struct file * filp)1968 static int f2fs_ioc_start_atomic_write(struct file *filp)
1969 {
1970 struct inode *inode = file_inode(filp);
1971 struct f2fs_inode_info *fi = F2FS_I(inode);
1972 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1973 int ret;
1974
1975 if (!inode_owner_or_capable(&init_user_ns, inode))
1976 return -EACCES;
1977
1978 if (!S_ISREG(inode->i_mode))
1979 return -EINVAL;
1980
1981 if (filp->f_flags & O_DIRECT)
1982 return -EINVAL;
1983
1984 ret = mnt_want_write_file(filp);
1985 if (ret)
1986 return ret;
1987
1988 inode_lock(inode);
1989
1990 f2fs_disable_compressed_file(inode);
1991
1992 if (f2fs_is_atomic_file(inode)) {
1993 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST))
1994 ret = -EINVAL;
1995 goto out;
1996 }
1997
1998 ret = f2fs_convert_inline_inode(inode);
1999 if (ret)
2000 goto out;
2001
2002 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
2003
2004 /*
2005 * Should wait end_io to count F2FS_WB_CP_DATA correctly by
2006 * f2fs_is_atomic_file.
2007 */
2008 if (get_dirty_pages(inode))
2009 f2fs_warn(F2FS_I_SB(inode), "Unexpected flush for atomic writes: ino=%lu, npages=%u",
2010 inode->i_ino, get_dirty_pages(inode));
2011 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
2012 if (ret) {
2013 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
2014 goto out;
2015 }
2016
2017 spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
2018 if (list_empty(&fi->inmem_ilist))
2019 list_add_tail(&fi->inmem_ilist, &sbi->inode_list[ATOMIC_FILE]);
2020 sbi->atomic_files++;
2021 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
2022
2023 /* add inode in inmem_list first and set atomic_file */
2024 set_inode_flag(inode, FI_ATOMIC_FILE);
2025 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2026 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
2027
2028 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2029 F2FS_I(inode)->inmem_task = current;
2030 stat_update_max_atomic_write(inode);
2031 out:
2032 inode_unlock(inode);
2033 mnt_drop_write_file(filp);
2034 return ret;
2035 }
2036
f2fs_ioc_commit_atomic_write(struct file * filp)2037 static int f2fs_ioc_commit_atomic_write(struct file *filp)
2038 {
2039 struct inode *inode = file_inode(filp);
2040 int ret;
2041
2042 if (!inode_owner_or_capable(&init_user_ns, inode))
2043 return -EACCES;
2044
2045 ret = mnt_want_write_file(filp);
2046 if (ret)
2047 return ret;
2048
2049 f2fs_balance_fs(F2FS_I_SB(inode), true);
2050
2051 inode_lock(inode);
2052
2053 if (f2fs_is_volatile_file(inode)) {
2054 ret = -EINVAL;
2055 goto err_out;
2056 }
2057
2058 if (f2fs_is_atomic_file(inode)) {
2059 ret = f2fs_commit_inmem_pages(inode);
2060 if (ret)
2061 goto err_out;
2062
2063 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
2064 if (!ret)
2065 f2fs_drop_inmem_pages(inode);
2066 } else {
2067 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false);
2068 }
2069 err_out:
2070 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) {
2071 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2072 ret = -EINVAL;
2073 }
2074 inode_unlock(inode);
2075 mnt_drop_write_file(filp);
2076 return ret;
2077 }
2078
f2fs_ioc_start_volatile_write(struct file * filp)2079 static int f2fs_ioc_start_volatile_write(struct file *filp)
2080 {
2081 struct inode *inode = file_inode(filp);
2082 int ret;
2083
2084 if (!inode_owner_or_capable(&init_user_ns, inode))
2085 return -EACCES;
2086
2087 if (!S_ISREG(inode->i_mode))
2088 return -EINVAL;
2089
2090 ret = mnt_want_write_file(filp);
2091 if (ret)
2092 return ret;
2093
2094 inode_lock(inode);
2095
2096 if (f2fs_is_volatile_file(inode))
2097 goto out;
2098
2099 ret = f2fs_convert_inline_inode(inode);
2100 if (ret)
2101 goto out;
2102
2103 stat_inc_volatile_write(inode);
2104 stat_update_max_volatile_write(inode);
2105
2106 set_inode_flag(inode, FI_VOLATILE_FILE);
2107 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2108 out:
2109 inode_unlock(inode);
2110 mnt_drop_write_file(filp);
2111 return ret;
2112 }
2113
f2fs_ioc_release_volatile_write(struct file * filp)2114 static int f2fs_ioc_release_volatile_write(struct file *filp)
2115 {
2116 struct inode *inode = file_inode(filp);
2117 int ret;
2118
2119 if (!inode_owner_or_capable(&init_user_ns, inode))
2120 return -EACCES;
2121
2122 ret = mnt_want_write_file(filp);
2123 if (ret)
2124 return ret;
2125
2126 inode_lock(inode);
2127
2128 if (!f2fs_is_volatile_file(inode))
2129 goto out;
2130
2131 if (!f2fs_is_first_block_written(inode)) {
2132 ret = truncate_partial_data_page(inode, 0, true);
2133 goto out;
2134 }
2135
2136 ret = punch_hole(inode, 0, F2FS_BLKSIZE);
2137 out:
2138 inode_unlock(inode);
2139 mnt_drop_write_file(filp);
2140 return ret;
2141 }
2142
f2fs_ioc_abort_volatile_write(struct file * filp)2143 static int f2fs_ioc_abort_volatile_write(struct file *filp)
2144 {
2145 struct inode *inode = file_inode(filp);
2146 int ret;
2147
2148 if (!inode_owner_or_capable(&init_user_ns, inode))
2149 return -EACCES;
2150
2151 ret = mnt_want_write_file(filp);
2152 if (ret)
2153 return ret;
2154
2155 inode_lock(inode);
2156
2157 if (f2fs_is_atomic_file(inode))
2158 f2fs_drop_inmem_pages(inode);
2159 if (f2fs_is_volatile_file(inode)) {
2160 clear_inode_flag(inode, FI_VOLATILE_FILE);
2161 stat_dec_volatile_write(inode);
2162 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
2163 }
2164
2165 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2166
2167 inode_unlock(inode);
2168
2169 mnt_drop_write_file(filp);
2170 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2171 return ret;
2172 }
2173
f2fs_ioc_shutdown(struct file * filp,unsigned long arg)2174 static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
2175 {
2176 struct inode *inode = file_inode(filp);
2177 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2178 struct super_block *sb = sbi->sb;
2179 __u32 in;
2180 int ret = 0;
2181
2182 if (!capable(CAP_SYS_ADMIN))
2183 return -EPERM;
2184
2185 if (get_user(in, (__u32 __user *)arg))
2186 return -EFAULT;
2187
2188 if (in != F2FS_GOING_DOWN_FULLSYNC) {
2189 ret = mnt_want_write_file(filp);
2190 if (ret) {
2191 if (ret == -EROFS) {
2192 ret = 0;
2193 f2fs_stop_checkpoint(sbi, false);
2194 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2195 trace_f2fs_shutdown(sbi, in, ret);
2196 }
2197 return ret;
2198 }
2199 }
2200
2201 switch (in) {
2202 case F2FS_GOING_DOWN_FULLSYNC:
2203 ret = freeze_bdev(sb->s_bdev);
2204 if (ret)
2205 goto out;
2206 f2fs_stop_checkpoint(sbi, false);
2207 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2208 thaw_bdev(sb->s_bdev);
2209 break;
2210 case F2FS_GOING_DOWN_METASYNC:
2211 /* do checkpoint only */
2212 ret = f2fs_sync_fs(sb, 1);
2213 if (ret)
2214 goto out;
2215 f2fs_stop_checkpoint(sbi, false);
2216 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2217 break;
2218 case F2FS_GOING_DOWN_NOSYNC:
2219 f2fs_stop_checkpoint(sbi, false);
2220 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2221 break;
2222 case F2FS_GOING_DOWN_METAFLUSH:
2223 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
2224 f2fs_stop_checkpoint(sbi, false);
2225 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2226 break;
2227 case F2FS_GOING_DOWN_NEED_FSCK:
2228 set_sbi_flag(sbi, SBI_NEED_FSCK);
2229 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
2230 set_sbi_flag(sbi, SBI_IS_DIRTY);
2231 /* do checkpoint only */
2232 ret = f2fs_sync_fs(sb, 1);
2233 goto out;
2234 default:
2235 ret = -EINVAL;
2236 goto out;
2237 }
2238
2239 f2fs_stop_gc_thread(sbi);
2240 f2fs_stop_discard_thread(sbi);
2241
2242 f2fs_drop_discard_cmd(sbi);
2243 clear_opt(sbi, DISCARD);
2244
2245 f2fs_update_time(sbi, REQ_TIME);
2246 out:
2247 if (in != F2FS_GOING_DOWN_FULLSYNC)
2248 mnt_drop_write_file(filp);
2249
2250 trace_f2fs_shutdown(sbi, in, ret);
2251
2252 return ret;
2253 }
2254
f2fs_ioc_fitrim(struct file * filp,unsigned long arg)2255 static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
2256 {
2257 struct inode *inode = file_inode(filp);
2258 struct super_block *sb = inode->i_sb;
2259 struct request_queue *q = bdev_get_queue(sb->s_bdev);
2260 struct fstrim_range range;
2261 int ret;
2262
2263 if (!capable(CAP_SYS_ADMIN))
2264 return -EPERM;
2265
2266 if (!f2fs_hw_support_discard(F2FS_SB(sb)))
2267 return -EOPNOTSUPP;
2268
2269 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
2270 sizeof(range)))
2271 return -EFAULT;
2272
2273 ret = mnt_want_write_file(filp);
2274 if (ret)
2275 return ret;
2276
2277 range.minlen = max((unsigned int)range.minlen,
2278 q->limits.discard_granularity);
2279 ret = f2fs_trim_fs(F2FS_SB(sb), &range);
2280 mnt_drop_write_file(filp);
2281 if (ret < 0)
2282 return ret;
2283
2284 if (copy_to_user((struct fstrim_range __user *)arg, &range,
2285 sizeof(range)))
2286 return -EFAULT;
2287 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2288 return 0;
2289 }
2290
uuid_is_nonzero(__u8 u[16])2291 static bool uuid_is_nonzero(__u8 u[16])
2292 {
2293 int i;
2294
2295 for (i = 0; i < 16; i++)
2296 if (u[i])
2297 return true;
2298 return false;
2299 }
2300
f2fs_ioc_set_encryption_policy(struct file * filp,unsigned long arg)2301 static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
2302 {
2303 struct inode *inode = file_inode(filp);
2304
2305 if (!f2fs_sb_has_encrypt(F2FS_I_SB(inode)))
2306 return -EOPNOTSUPP;
2307
2308 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2309
2310 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
2311 }
2312
f2fs_ioc_get_encryption_policy(struct file * filp,unsigned long arg)2313 static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
2314 {
2315 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2316 return -EOPNOTSUPP;
2317 return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
2318 }
2319
f2fs_ioc_get_encryption_pwsalt(struct file * filp,unsigned long arg)2320 static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
2321 {
2322 struct inode *inode = file_inode(filp);
2323 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2324 int err;
2325
2326 if (!f2fs_sb_has_encrypt(sbi))
2327 return -EOPNOTSUPP;
2328
2329 err = mnt_want_write_file(filp);
2330 if (err)
2331 return err;
2332
2333 down_write(&sbi->sb_lock);
2334
2335 if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
2336 goto got_it;
2337
2338 /* update superblock with uuid */
2339 generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
2340
2341 err = f2fs_commit_super(sbi, false);
2342 if (err) {
2343 /* undo new data */
2344 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
2345 goto out_err;
2346 }
2347 got_it:
2348 if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt,
2349 16))
2350 err = -EFAULT;
2351 out_err:
2352 up_write(&sbi->sb_lock);
2353 mnt_drop_write_file(filp);
2354 return err;
2355 }
2356
f2fs_ioc_get_encryption_policy_ex(struct file * filp,unsigned long arg)2357 static int f2fs_ioc_get_encryption_policy_ex(struct file *filp,
2358 unsigned long arg)
2359 {
2360 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2361 return -EOPNOTSUPP;
2362
2363 return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg);
2364 }
2365
f2fs_ioc_add_encryption_key(struct file * filp,unsigned long arg)2366 static int f2fs_ioc_add_encryption_key(struct file *filp, unsigned long arg)
2367 {
2368 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2369 return -EOPNOTSUPP;
2370
2371 return fscrypt_ioctl_add_key(filp, (void __user *)arg);
2372 }
2373
f2fs_ioc_remove_encryption_key(struct file * filp,unsigned long arg)2374 static int f2fs_ioc_remove_encryption_key(struct file *filp, unsigned long arg)
2375 {
2376 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2377 return -EOPNOTSUPP;
2378
2379 return fscrypt_ioctl_remove_key(filp, (void __user *)arg);
2380 }
2381
f2fs_ioc_remove_encryption_key_all_users(struct file * filp,unsigned long arg)2382 static int f2fs_ioc_remove_encryption_key_all_users(struct file *filp,
2383 unsigned long arg)
2384 {
2385 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2386 return -EOPNOTSUPP;
2387
2388 return fscrypt_ioctl_remove_key_all_users(filp, (void __user *)arg);
2389 }
2390
f2fs_ioc_get_encryption_key_status(struct file * filp,unsigned long arg)2391 static int f2fs_ioc_get_encryption_key_status(struct file *filp,
2392 unsigned long arg)
2393 {
2394 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2395 return -EOPNOTSUPP;
2396
2397 return fscrypt_ioctl_get_key_status(filp, (void __user *)arg);
2398 }
2399
f2fs_ioc_get_encryption_nonce(struct file * filp,unsigned long arg)2400 static int f2fs_ioc_get_encryption_nonce(struct file *filp, unsigned long arg)
2401 {
2402 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2403 return -EOPNOTSUPP;
2404
2405 return fscrypt_ioctl_get_nonce(filp, (void __user *)arg);
2406 }
2407
f2fs_ioc_gc(struct file * filp,unsigned long arg)2408 static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
2409 {
2410 struct inode *inode = file_inode(filp);
2411 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2412 __u32 sync;
2413 int ret;
2414
2415 if (!capable(CAP_SYS_ADMIN))
2416 return -EPERM;
2417
2418 if (get_user(sync, (__u32 __user *)arg))
2419 return -EFAULT;
2420
2421 if (f2fs_readonly(sbi->sb))
2422 return -EROFS;
2423
2424 ret = mnt_want_write_file(filp);
2425 if (ret)
2426 return ret;
2427
2428 if (!sync) {
2429 if (!down_write_trylock(&sbi->gc_lock)) {
2430 ret = -EBUSY;
2431 goto out;
2432 }
2433 } else {
2434 down_write(&sbi->gc_lock);
2435 }
2436
2437 ret = f2fs_gc(sbi, sync, true, false, NULL_SEGNO);
2438 out:
2439 mnt_drop_write_file(filp);
2440 return ret;
2441 }
2442
__f2fs_ioc_gc_range(struct file * filp,struct f2fs_gc_range * range)2443 static int __f2fs_ioc_gc_range(struct file *filp, struct f2fs_gc_range *range)
2444 {
2445 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
2446 u64 end;
2447 int ret;
2448
2449 if (!capable(CAP_SYS_ADMIN))
2450 return -EPERM;
2451 if (f2fs_readonly(sbi->sb))
2452 return -EROFS;
2453
2454 end = range->start + range->len;
2455 if (end < range->start || range->start < MAIN_BLKADDR(sbi) ||
2456 end >= MAX_BLKADDR(sbi))
2457 return -EINVAL;
2458
2459 ret = mnt_want_write_file(filp);
2460 if (ret)
2461 return ret;
2462
2463 do_more:
2464 if (!range->sync) {
2465 if (!down_write_trylock(&sbi->gc_lock)) {
2466 ret = -EBUSY;
2467 goto out;
2468 }
2469 } else {
2470 down_write(&sbi->gc_lock);
2471 }
2472
2473 ret = f2fs_gc(sbi, range->sync, true, false,
2474 GET_SEGNO(sbi, range->start));
2475 if (ret) {
2476 if (ret == -EBUSY)
2477 ret = -EAGAIN;
2478 goto out;
2479 }
2480 range->start += BLKS_PER_SEC(sbi);
2481 if (range->start <= end)
2482 goto do_more;
2483 out:
2484 mnt_drop_write_file(filp);
2485 return ret;
2486 }
2487
f2fs_ioc_gc_range(struct file * filp,unsigned long arg)2488 static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
2489 {
2490 struct f2fs_gc_range range;
2491
2492 if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
2493 sizeof(range)))
2494 return -EFAULT;
2495 return __f2fs_ioc_gc_range(filp, &range);
2496 }
2497
f2fs_ioc_write_checkpoint(struct file * filp,unsigned long arg)2498 static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
2499 {
2500 struct inode *inode = file_inode(filp);
2501 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2502 int ret;
2503
2504 if (!capable(CAP_SYS_ADMIN))
2505 return -EPERM;
2506
2507 if (f2fs_readonly(sbi->sb))
2508 return -EROFS;
2509
2510 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
2511 f2fs_info(sbi, "Skipping Checkpoint. Checkpoints currently disabled.");
2512 return -EINVAL;
2513 }
2514
2515 ret = mnt_want_write_file(filp);
2516 if (ret)
2517 return ret;
2518
2519 ret = f2fs_sync_fs(sbi->sb, 1);
2520
2521 mnt_drop_write_file(filp);
2522 return ret;
2523 }
2524
f2fs_defragment_range(struct f2fs_sb_info * sbi,struct file * filp,struct f2fs_defragment * range)2525 static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
2526 struct file *filp,
2527 struct f2fs_defragment *range)
2528 {
2529 struct inode *inode = file_inode(filp);
2530 struct f2fs_map_blocks map = { .m_next_extent = NULL,
2531 .m_seg_type = NO_CHECK_TYPE,
2532 .m_may_create = false };
2533 struct extent_info ei = {0, 0, 0};
2534 pgoff_t pg_start, pg_end, next_pgofs;
2535 unsigned int blk_per_seg = sbi->blocks_per_seg;
2536 unsigned int total = 0, sec_num;
2537 block_t blk_end = 0;
2538 bool fragmented = false;
2539 int err;
2540
2541 /* if in-place-update policy is enabled, don't waste time here */
2542 if (f2fs_should_update_inplace(inode, NULL))
2543 return -EINVAL;
2544
2545 pg_start = range->start >> PAGE_SHIFT;
2546 pg_end = (range->start + range->len) >> PAGE_SHIFT;
2547
2548 f2fs_balance_fs(sbi, true);
2549
2550 inode_lock(inode);
2551
2552 /* writeback all dirty pages in the range */
2553 err = filemap_write_and_wait_range(inode->i_mapping, range->start,
2554 range->start + range->len - 1);
2555 if (err)
2556 goto out;
2557
2558 /*
2559 * lookup mapping info in extent cache, skip defragmenting if physical
2560 * block addresses are continuous.
2561 */
2562 if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) {
2563 if (ei.fofs + ei.len >= pg_end)
2564 goto out;
2565 }
2566
2567 map.m_lblk = pg_start;
2568 map.m_next_pgofs = &next_pgofs;
2569
2570 /*
2571 * lookup mapping info in dnode page cache, skip defragmenting if all
2572 * physical block addresses are continuous even if there are hole(s)
2573 * in logical blocks.
2574 */
2575 while (map.m_lblk < pg_end) {
2576 map.m_len = pg_end - map.m_lblk;
2577 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
2578 if (err)
2579 goto out;
2580
2581 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
2582 map.m_lblk = next_pgofs;
2583 continue;
2584 }
2585
2586 if (blk_end && blk_end != map.m_pblk)
2587 fragmented = true;
2588
2589 /* record total count of block that we're going to move */
2590 total += map.m_len;
2591
2592 blk_end = map.m_pblk + map.m_len;
2593
2594 map.m_lblk += map.m_len;
2595 }
2596
2597 if (!fragmented) {
2598 total = 0;
2599 goto out;
2600 }
2601
2602 sec_num = DIV_ROUND_UP(total, BLKS_PER_SEC(sbi));
2603
2604 /*
2605 * make sure there are enough free section for LFS allocation, this can
2606 * avoid defragment running in SSR mode when free section are allocated
2607 * intensively
2608 */
2609 if (has_not_enough_free_secs(sbi, 0, sec_num)) {
2610 err = -EAGAIN;
2611 goto out;
2612 }
2613
2614 map.m_lblk = pg_start;
2615 map.m_len = pg_end - pg_start;
2616 total = 0;
2617
2618 while (map.m_lblk < pg_end) {
2619 pgoff_t idx;
2620 int cnt = 0;
2621
2622 do_map:
2623 map.m_len = pg_end - map.m_lblk;
2624 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
2625 if (err)
2626 goto clear_out;
2627
2628 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
2629 map.m_lblk = next_pgofs;
2630 goto check;
2631 }
2632
2633 set_inode_flag(inode, FI_DO_DEFRAG);
2634
2635 idx = map.m_lblk;
2636 while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) {
2637 struct page *page;
2638
2639 page = f2fs_get_lock_data_page(inode, idx, true);
2640 if (IS_ERR(page)) {
2641 err = PTR_ERR(page);
2642 goto clear_out;
2643 }
2644
2645 set_page_dirty(page);
2646 f2fs_put_page(page, 1);
2647
2648 idx++;
2649 cnt++;
2650 total++;
2651 }
2652
2653 map.m_lblk = idx;
2654 check:
2655 if (map.m_lblk < pg_end && cnt < blk_per_seg)
2656 goto do_map;
2657
2658 clear_inode_flag(inode, FI_DO_DEFRAG);
2659
2660 err = filemap_fdatawrite(inode->i_mapping);
2661 if (err)
2662 goto out;
2663 }
2664 clear_out:
2665 clear_inode_flag(inode, FI_DO_DEFRAG);
2666 out:
2667 inode_unlock(inode);
2668 if (!err)
2669 range->len = (u64)total << PAGE_SHIFT;
2670 return err;
2671 }
2672
f2fs_ioc_defragment(struct file * filp,unsigned long arg)2673 static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
2674 {
2675 struct inode *inode = file_inode(filp);
2676 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2677 struct f2fs_defragment range;
2678 int err;
2679
2680 if (!capable(CAP_SYS_ADMIN))
2681 return -EPERM;
2682
2683 if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode))
2684 return -EINVAL;
2685
2686 if (f2fs_readonly(sbi->sb))
2687 return -EROFS;
2688
2689 if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
2690 sizeof(range)))
2691 return -EFAULT;
2692
2693 /* verify alignment of offset & size */
2694 if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1))
2695 return -EINVAL;
2696
2697 if (unlikely((range.start + range.len) >> PAGE_SHIFT >
2698 max_file_blocks(inode)))
2699 return -EINVAL;
2700
2701 err = mnt_want_write_file(filp);
2702 if (err)
2703 return err;
2704
2705 err = f2fs_defragment_range(sbi, filp, &range);
2706 mnt_drop_write_file(filp);
2707
2708 f2fs_update_time(sbi, REQ_TIME);
2709 if (err < 0)
2710 return err;
2711
2712 if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
2713 sizeof(range)))
2714 return -EFAULT;
2715
2716 return 0;
2717 }
2718
f2fs_move_file_range(struct file * file_in,loff_t pos_in,struct file * file_out,loff_t pos_out,size_t len)2719 static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
2720 struct file *file_out, loff_t pos_out, size_t len)
2721 {
2722 struct inode *src = file_inode(file_in);
2723 struct inode *dst = file_inode(file_out);
2724 struct f2fs_sb_info *sbi = F2FS_I_SB(src);
2725 size_t olen = len, dst_max_i_size = 0;
2726 size_t dst_osize;
2727 int ret;
2728
2729 if (file_in->f_path.mnt != file_out->f_path.mnt ||
2730 src->i_sb != dst->i_sb)
2731 return -EXDEV;
2732
2733 if (unlikely(f2fs_readonly(src->i_sb)))
2734 return -EROFS;
2735
2736 if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
2737 return -EINVAL;
2738
2739 if (IS_ENCRYPTED(src) || IS_ENCRYPTED(dst))
2740 return -EOPNOTSUPP;
2741
2742 if (pos_out < 0 || pos_in < 0)
2743 return -EINVAL;
2744
2745 if (src == dst) {
2746 if (pos_in == pos_out)
2747 return 0;
2748 if (pos_out > pos_in && pos_out < pos_in + len)
2749 return -EINVAL;
2750 }
2751
2752 inode_lock(src);
2753 if (src != dst) {
2754 ret = -EBUSY;
2755 if (!inode_trylock(dst))
2756 goto out;
2757 }
2758
2759 ret = -EINVAL;
2760 if (pos_in + len > src->i_size || pos_in + len < pos_in)
2761 goto out_unlock;
2762 if (len == 0)
2763 olen = len = src->i_size - pos_in;
2764 if (pos_in + len == src->i_size)
2765 len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in;
2766 if (len == 0) {
2767 ret = 0;
2768 goto out_unlock;
2769 }
2770
2771 dst_osize = dst->i_size;
2772 if (pos_out + olen > dst->i_size)
2773 dst_max_i_size = pos_out + olen;
2774
2775 /* verify the end result is block aligned */
2776 if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) ||
2777 !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) ||
2778 !IS_ALIGNED(pos_out, F2FS_BLKSIZE))
2779 goto out_unlock;
2780
2781 ret = f2fs_convert_inline_inode(src);
2782 if (ret)
2783 goto out_unlock;
2784
2785 ret = f2fs_convert_inline_inode(dst);
2786 if (ret)
2787 goto out_unlock;
2788
2789 /* write out all dirty pages from offset */
2790 ret = filemap_write_and_wait_range(src->i_mapping,
2791 pos_in, pos_in + len);
2792 if (ret)
2793 goto out_unlock;
2794
2795 ret = filemap_write_and_wait_range(dst->i_mapping,
2796 pos_out, pos_out + len);
2797 if (ret)
2798 goto out_unlock;
2799
2800 f2fs_balance_fs(sbi, true);
2801
2802 down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2803 if (src != dst) {
2804 ret = -EBUSY;
2805 if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE]))
2806 goto out_src;
2807 }
2808
2809 f2fs_lock_op(sbi);
2810 ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
2811 pos_out >> F2FS_BLKSIZE_BITS,
2812 len >> F2FS_BLKSIZE_BITS, false);
2813
2814 if (!ret) {
2815 if (dst_max_i_size)
2816 f2fs_i_size_write(dst, dst_max_i_size);
2817 else if (dst_osize != dst->i_size)
2818 f2fs_i_size_write(dst, dst_osize);
2819 }
2820 f2fs_unlock_op(sbi);
2821
2822 if (src != dst)
2823 up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]);
2824 out_src:
2825 up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2826 out_unlock:
2827 if (src != dst)
2828 inode_unlock(dst);
2829 out:
2830 inode_unlock(src);
2831 return ret;
2832 }
2833
__f2fs_ioc_move_range(struct file * filp,struct f2fs_move_range * range)2834 static int __f2fs_ioc_move_range(struct file *filp,
2835 struct f2fs_move_range *range)
2836 {
2837 struct fd dst;
2838 int err;
2839
2840 if (!(filp->f_mode & FMODE_READ) ||
2841 !(filp->f_mode & FMODE_WRITE))
2842 return -EBADF;
2843
2844 dst = fdget(range->dst_fd);
2845 if (!dst.file)
2846 return -EBADF;
2847
2848 if (!(dst.file->f_mode & FMODE_WRITE)) {
2849 err = -EBADF;
2850 goto err_out;
2851 }
2852
2853 err = mnt_want_write_file(filp);
2854 if (err)
2855 goto err_out;
2856
2857 err = f2fs_move_file_range(filp, range->pos_in, dst.file,
2858 range->pos_out, range->len);
2859
2860 mnt_drop_write_file(filp);
2861 err_out:
2862 fdput(dst);
2863 return err;
2864 }
2865
f2fs_ioc_move_range(struct file * filp,unsigned long arg)2866 static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
2867 {
2868 struct f2fs_move_range range;
2869
2870 if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
2871 sizeof(range)))
2872 return -EFAULT;
2873 return __f2fs_ioc_move_range(filp, &range);
2874 }
2875
f2fs_ioc_flush_device(struct file * filp,unsigned long arg)2876 static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
2877 {
2878 struct inode *inode = file_inode(filp);
2879 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2880 struct sit_info *sm = SIT_I(sbi);
2881 unsigned int start_segno = 0, end_segno = 0;
2882 unsigned int dev_start_segno = 0, dev_end_segno = 0;
2883 struct f2fs_flush_device range;
2884 int ret;
2885
2886 if (!capable(CAP_SYS_ADMIN))
2887 return -EPERM;
2888
2889 if (f2fs_readonly(sbi->sb))
2890 return -EROFS;
2891
2892 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2893 return -EINVAL;
2894
2895 if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg,
2896 sizeof(range)))
2897 return -EFAULT;
2898
2899 if (!f2fs_is_multi_device(sbi) || sbi->s_ndevs - 1 <= range.dev_num ||
2900 __is_large_section(sbi)) {
2901 f2fs_warn(sbi, "Can't flush %u in %d for segs_per_sec %u != 1",
2902 range.dev_num, sbi->s_ndevs, sbi->segs_per_sec);
2903 return -EINVAL;
2904 }
2905
2906 ret = mnt_want_write_file(filp);
2907 if (ret)
2908 return ret;
2909
2910 if (range.dev_num != 0)
2911 dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk);
2912 dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk);
2913
2914 start_segno = sm->last_victim[FLUSH_DEVICE];
2915 if (start_segno < dev_start_segno || start_segno >= dev_end_segno)
2916 start_segno = dev_start_segno;
2917 end_segno = min(start_segno + range.segments, dev_end_segno);
2918
2919 while (start_segno < end_segno) {
2920 if (!down_write_trylock(&sbi->gc_lock)) {
2921 ret = -EBUSY;
2922 goto out;
2923 }
2924 sm->last_victim[GC_CB] = end_segno + 1;
2925 sm->last_victim[GC_GREEDY] = end_segno + 1;
2926 sm->last_victim[ALLOC_NEXT] = end_segno + 1;
2927 ret = f2fs_gc(sbi, true, true, true, start_segno);
2928 if (ret == -EAGAIN)
2929 ret = 0;
2930 else if (ret < 0)
2931 break;
2932 start_segno++;
2933 }
2934 out:
2935 mnt_drop_write_file(filp);
2936 return ret;
2937 }
2938
f2fs_ioc_get_features(struct file * filp,unsigned long arg)2939 static int f2fs_ioc_get_features(struct file *filp, unsigned long arg)
2940 {
2941 struct inode *inode = file_inode(filp);
2942 u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature);
2943
2944 /* Must validate to set it with SQLite behavior in Android. */
2945 sb_feature |= F2FS_FEATURE_ATOMIC_WRITE;
2946
2947 return put_user(sb_feature, (u32 __user *)arg);
2948 }
2949
2950 #ifdef CONFIG_QUOTA
f2fs_transfer_project_quota(struct inode * inode,kprojid_t kprojid)2951 int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
2952 {
2953 struct dquot *transfer_to[MAXQUOTAS] = {};
2954 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2955 struct super_block *sb = sbi->sb;
2956 int err = 0;
2957
2958 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
2959 if (!IS_ERR(transfer_to[PRJQUOTA])) {
2960 err = __dquot_transfer(inode, transfer_to);
2961 if (err)
2962 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2963 dqput(transfer_to[PRJQUOTA]);
2964 }
2965 return err;
2966 }
2967
f2fs_ioc_setproject(struct inode * inode,__u32 projid)2968 static int f2fs_ioc_setproject(struct inode *inode, __u32 projid)
2969 {
2970 struct f2fs_inode_info *fi = F2FS_I(inode);
2971 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2972 struct page *ipage;
2973 kprojid_t kprojid;
2974 int err;
2975
2976 if (!f2fs_sb_has_project_quota(sbi)) {
2977 if (projid != F2FS_DEF_PROJID)
2978 return -EOPNOTSUPP;
2979 else
2980 return 0;
2981 }
2982
2983 if (!f2fs_has_extra_attr(inode))
2984 return -EOPNOTSUPP;
2985
2986 kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
2987
2988 if (projid_eq(kprojid, F2FS_I(inode)->i_projid))
2989 return 0;
2990
2991 err = -EPERM;
2992 /* Is it quota file? Do not allow user to mess with it */
2993 if (IS_NOQUOTA(inode))
2994 return err;
2995
2996 ipage = f2fs_get_node_page(sbi, inode->i_ino);
2997 if (IS_ERR(ipage))
2998 return PTR_ERR(ipage);
2999
3000 if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize,
3001 i_projid)) {
3002 err = -EOVERFLOW;
3003 f2fs_put_page(ipage, 1);
3004 return err;
3005 }
3006 f2fs_put_page(ipage, 1);
3007
3008 err = dquot_initialize(inode);
3009 if (err)
3010 return err;
3011
3012 f2fs_lock_op(sbi);
3013 err = f2fs_transfer_project_quota(inode, kprojid);
3014 if (err)
3015 goto out_unlock;
3016
3017 F2FS_I(inode)->i_projid = kprojid;
3018 inode->i_ctime = current_time(inode);
3019 f2fs_mark_inode_dirty_sync(inode, true);
3020 out_unlock:
3021 f2fs_unlock_op(sbi);
3022 return err;
3023 }
3024 #else
f2fs_transfer_project_quota(struct inode * inode,kprojid_t kprojid)3025 int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
3026 {
3027 return 0;
3028 }
3029
f2fs_ioc_setproject(struct inode * inode,__u32 projid)3030 static int f2fs_ioc_setproject(struct inode *inode, __u32 projid)
3031 {
3032 if (projid != F2FS_DEF_PROJID)
3033 return -EOPNOTSUPP;
3034 return 0;
3035 }
3036 #endif
3037
f2fs_fileattr_get(struct dentry * dentry,struct fileattr * fa)3038 int f2fs_fileattr_get(struct dentry *dentry, struct fileattr *fa)
3039 {
3040 struct inode *inode = d_inode(dentry);
3041 struct f2fs_inode_info *fi = F2FS_I(inode);
3042 u32 fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
3043
3044 if (IS_ENCRYPTED(inode))
3045 fsflags |= FS_ENCRYPT_FL;
3046 if (IS_VERITY(inode))
3047 fsflags |= FS_VERITY_FL;
3048 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))
3049 fsflags |= FS_INLINE_DATA_FL;
3050 if (is_inode_flag_set(inode, FI_PIN_FILE))
3051 fsflags |= FS_NOCOW_FL;
3052
3053 fileattr_fill_flags(fa, fsflags & F2FS_GETTABLE_FS_FL);
3054
3055 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)))
3056 fa->fsx_projid = from_kprojid(&init_user_ns, fi->i_projid);
3057
3058 return 0;
3059 }
3060
f2fs_fileattr_set(struct user_namespace * mnt_userns,struct dentry * dentry,struct fileattr * fa)3061 int f2fs_fileattr_set(struct user_namespace *mnt_userns,
3062 struct dentry *dentry, struct fileattr *fa)
3063 {
3064 struct inode *inode = d_inode(dentry);
3065 u32 fsflags = fa->flags, mask = F2FS_SETTABLE_FS_FL;
3066 u32 iflags;
3067 int err;
3068
3069 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
3070 return -EIO;
3071 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode)))
3072 return -ENOSPC;
3073 if (fsflags & ~F2FS_GETTABLE_FS_FL)
3074 return -EOPNOTSUPP;
3075 fsflags &= F2FS_SETTABLE_FS_FL;
3076 if (!fa->flags_valid)
3077 mask &= FS_COMMON_FL;
3078
3079 iflags = f2fs_fsflags_to_iflags(fsflags);
3080 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
3081 return -EOPNOTSUPP;
3082
3083 err = f2fs_setflags_common(inode, iflags, f2fs_fsflags_to_iflags(mask));
3084 if (!err)
3085 err = f2fs_ioc_setproject(inode, fa->fsx_projid);
3086
3087 return err;
3088 }
3089
f2fs_pin_file_control(struct inode * inode,bool inc)3090 int f2fs_pin_file_control(struct inode *inode, bool inc)
3091 {
3092 struct f2fs_inode_info *fi = F2FS_I(inode);
3093 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3094
3095 /* Use i_gc_failures for normal file as a risk signal. */
3096 if (inc)
3097 f2fs_i_gc_failures_write(inode,
3098 fi->i_gc_failures[GC_FAILURE_PIN] + 1);
3099
3100 if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) {
3101 f2fs_warn(sbi, "%s: Enable GC = ino %lx after %x GC trials",
3102 __func__, inode->i_ino,
3103 fi->i_gc_failures[GC_FAILURE_PIN]);
3104 clear_inode_flag(inode, FI_PIN_FILE);
3105 return -EAGAIN;
3106 }
3107 return 0;
3108 }
3109
f2fs_ioc_set_pin_file(struct file * filp,unsigned long arg)3110 static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
3111 {
3112 struct inode *inode = file_inode(filp);
3113 __u32 pin;
3114 int ret = 0;
3115
3116 if (get_user(pin, (__u32 __user *)arg))
3117 return -EFAULT;
3118
3119 if (!S_ISREG(inode->i_mode))
3120 return -EINVAL;
3121
3122 if (f2fs_readonly(F2FS_I_SB(inode)->sb))
3123 return -EROFS;
3124
3125 ret = mnt_want_write_file(filp);
3126 if (ret)
3127 return ret;
3128
3129 inode_lock(inode);
3130
3131 if (f2fs_should_update_outplace(inode, NULL)) {
3132 ret = -EINVAL;
3133 goto out;
3134 }
3135
3136 if (!pin) {
3137 clear_inode_flag(inode, FI_PIN_FILE);
3138 f2fs_i_gc_failures_write(inode, 0);
3139 goto done;
3140 }
3141
3142 if (f2fs_pin_file_control(inode, false)) {
3143 ret = -EAGAIN;
3144 goto out;
3145 }
3146
3147 ret = f2fs_convert_inline_inode(inode);
3148 if (ret)
3149 goto out;
3150
3151 if (!f2fs_disable_compressed_file(inode)) {
3152 ret = -EOPNOTSUPP;
3153 goto out;
3154 }
3155
3156 set_inode_flag(inode, FI_PIN_FILE);
3157 ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
3158 done:
3159 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3160 out:
3161 inode_unlock(inode);
3162 mnt_drop_write_file(filp);
3163 return ret;
3164 }
3165
f2fs_ioc_get_pin_file(struct file * filp,unsigned long arg)3166 static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg)
3167 {
3168 struct inode *inode = file_inode(filp);
3169 __u32 pin = 0;
3170
3171 if (is_inode_flag_set(inode, FI_PIN_FILE))
3172 pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
3173 return put_user(pin, (u32 __user *)arg);
3174 }
3175
f2fs_precache_extents(struct inode * inode)3176 int f2fs_precache_extents(struct inode *inode)
3177 {
3178 struct f2fs_inode_info *fi = F2FS_I(inode);
3179 struct f2fs_map_blocks map;
3180 pgoff_t m_next_extent;
3181 loff_t end;
3182 int err;
3183
3184 if (is_inode_flag_set(inode, FI_NO_EXTENT))
3185 return -EOPNOTSUPP;
3186
3187 map.m_lblk = 0;
3188 map.m_next_pgofs = NULL;
3189 map.m_next_extent = &m_next_extent;
3190 map.m_seg_type = NO_CHECK_TYPE;
3191 map.m_may_create = false;
3192 end = max_file_blocks(inode);
3193
3194 while (map.m_lblk < end) {
3195 map.m_len = end - map.m_lblk;
3196
3197 down_write(&fi->i_gc_rwsem[WRITE]);
3198 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE);
3199 up_write(&fi->i_gc_rwsem[WRITE]);
3200 if (err)
3201 return err;
3202
3203 map.m_lblk = m_next_extent;
3204 }
3205
3206 return err;
3207 }
3208
f2fs_ioc_precache_extents(struct file * filp,unsigned long arg)3209 static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg)
3210 {
3211 return f2fs_precache_extents(file_inode(filp));
3212 }
3213
f2fs_ioc_resize_fs(struct file * filp,unsigned long arg)3214 static int f2fs_ioc_resize_fs(struct file *filp, unsigned long arg)
3215 {
3216 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
3217 __u64 block_count;
3218
3219 if (!capable(CAP_SYS_ADMIN))
3220 return -EPERM;
3221
3222 if (f2fs_readonly(sbi->sb))
3223 return -EROFS;
3224
3225 if (copy_from_user(&block_count, (void __user *)arg,
3226 sizeof(block_count)))
3227 return -EFAULT;
3228
3229 return f2fs_resize_fs(sbi, block_count);
3230 }
3231
f2fs_ioc_enable_verity(struct file * filp,unsigned long arg)3232 static int f2fs_ioc_enable_verity(struct file *filp, unsigned long arg)
3233 {
3234 struct inode *inode = file_inode(filp);
3235
3236 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3237
3238 if (!f2fs_sb_has_verity(F2FS_I_SB(inode))) {
3239 f2fs_warn(F2FS_I_SB(inode),
3240 "Can't enable fs-verity on inode %lu: the verity feature is not enabled on this filesystem.\n",
3241 inode->i_ino);
3242 return -EOPNOTSUPP;
3243 }
3244
3245 return fsverity_ioctl_enable(filp, (const void __user *)arg);
3246 }
3247
f2fs_ioc_measure_verity(struct file * filp,unsigned long arg)3248 static int f2fs_ioc_measure_verity(struct file *filp, unsigned long arg)
3249 {
3250 if (!f2fs_sb_has_verity(F2FS_I_SB(file_inode(filp))))
3251 return -EOPNOTSUPP;
3252
3253 return fsverity_ioctl_measure(filp, (void __user *)arg);
3254 }
3255
f2fs_ioc_read_verity_metadata(struct file * filp,unsigned long arg)3256 static int f2fs_ioc_read_verity_metadata(struct file *filp, unsigned long arg)
3257 {
3258 if (!f2fs_sb_has_verity(F2FS_I_SB(file_inode(filp))))
3259 return -EOPNOTSUPP;
3260
3261 return fsverity_ioctl_read_metadata(filp, (const void __user *)arg);
3262 }
3263
f2fs_ioc_getfslabel(struct file * filp,unsigned long arg)3264 static int f2fs_ioc_getfslabel(struct file *filp, unsigned long arg)
3265 {
3266 struct inode *inode = file_inode(filp);
3267 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3268 char *vbuf;
3269 int count;
3270 int err = 0;
3271
3272 vbuf = f2fs_kzalloc(sbi, MAX_VOLUME_NAME, GFP_KERNEL);
3273 if (!vbuf)
3274 return -ENOMEM;
3275
3276 down_read(&sbi->sb_lock);
3277 count = utf16s_to_utf8s(sbi->raw_super->volume_name,
3278 ARRAY_SIZE(sbi->raw_super->volume_name),
3279 UTF16_LITTLE_ENDIAN, vbuf, MAX_VOLUME_NAME);
3280 up_read(&sbi->sb_lock);
3281
3282 if (copy_to_user((char __user *)arg, vbuf,
3283 min(FSLABEL_MAX, count)))
3284 err = -EFAULT;
3285
3286 kfree(vbuf);
3287 return err;
3288 }
3289
f2fs_ioc_setfslabel(struct file * filp,unsigned long arg)3290 static int f2fs_ioc_setfslabel(struct file *filp, unsigned long arg)
3291 {
3292 struct inode *inode = file_inode(filp);
3293 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3294 char *vbuf;
3295 int err = 0;
3296
3297 if (!capable(CAP_SYS_ADMIN))
3298 return -EPERM;
3299
3300 vbuf = strndup_user((const char __user *)arg, FSLABEL_MAX);
3301 if (IS_ERR(vbuf))
3302 return PTR_ERR(vbuf);
3303
3304 err = mnt_want_write_file(filp);
3305 if (err)
3306 goto out;
3307
3308 down_write(&sbi->sb_lock);
3309
3310 memset(sbi->raw_super->volume_name, 0,
3311 sizeof(sbi->raw_super->volume_name));
3312 utf8s_to_utf16s(vbuf, strlen(vbuf), UTF16_LITTLE_ENDIAN,
3313 sbi->raw_super->volume_name,
3314 ARRAY_SIZE(sbi->raw_super->volume_name));
3315
3316 err = f2fs_commit_super(sbi, false);
3317
3318 up_write(&sbi->sb_lock);
3319
3320 mnt_drop_write_file(filp);
3321 out:
3322 kfree(vbuf);
3323 return err;
3324 }
3325
f2fs_get_compress_blocks(struct file * filp,unsigned long arg)3326 static int f2fs_get_compress_blocks(struct file *filp, unsigned long arg)
3327 {
3328 struct inode *inode = file_inode(filp);
3329 __u64 blocks;
3330
3331 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3332 return -EOPNOTSUPP;
3333
3334 if (!f2fs_compressed_file(inode))
3335 return -EINVAL;
3336
3337 blocks = atomic_read(&F2FS_I(inode)->i_compr_blocks);
3338 return put_user(blocks, (u64 __user *)arg);
3339 }
3340
release_compress_blocks(struct dnode_of_data * dn,pgoff_t count)3341 static int release_compress_blocks(struct dnode_of_data *dn, pgoff_t count)
3342 {
3343 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
3344 unsigned int released_blocks = 0;
3345 int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
3346 block_t blkaddr;
3347 int i;
3348
3349 for (i = 0; i < count; i++) {
3350 blkaddr = data_blkaddr(dn->inode, dn->node_page,
3351 dn->ofs_in_node + i);
3352
3353 if (!__is_valid_data_blkaddr(blkaddr))
3354 continue;
3355 if (unlikely(!f2fs_is_valid_blkaddr(sbi, blkaddr,
3356 DATA_GENERIC_ENHANCE)))
3357 return -EFSCORRUPTED;
3358 }
3359
3360 while (count) {
3361 int compr_blocks = 0;
3362
3363 for (i = 0; i < cluster_size; i++, dn->ofs_in_node++) {
3364 blkaddr = f2fs_data_blkaddr(dn);
3365
3366 if (i == 0) {
3367 if (blkaddr == COMPRESS_ADDR)
3368 continue;
3369 dn->ofs_in_node += cluster_size;
3370 goto next;
3371 }
3372
3373 if (__is_valid_data_blkaddr(blkaddr))
3374 compr_blocks++;
3375
3376 if (blkaddr != NEW_ADDR)
3377 continue;
3378
3379 dn->data_blkaddr = NULL_ADDR;
3380 f2fs_set_data_blkaddr(dn);
3381 }
3382
3383 f2fs_i_compr_blocks_update(dn->inode, compr_blocks, false);
3384 dec_valid_block_count(sbi, dn->inode,
3385 cluster_size - compr_blocks);
3386
3387 released_blocks += cluster_size - compr_blocks;
3388 next:
3389 count -= cluster_size;
3390 }
3391
3392 return released_blocks;
3393 }
3394
f2fs_release_compress_blocks(struct file * filp,unsigned long arg)3395 static int f2fs_release_compress_blocks(struct file *filp, unsigned long arg)
3396 {
3397 struct inode *inode = file_inode(filp);
3398 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3399 pgoff_t page_idx = 0, last_idx;
3400 unsigned int released_blocks = 0;
3401 int ret;
3402 int writecount;
3403
3404 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3405 return -EOPNOTSUPP;
3406
3407 if (!f2fs_compressed_file(inode))
3408 return -EINVAL;
3409
3410 if (f2fs_readonly(sbi->sb))
3411 return -EROFS;
3412
3413 ret = mnt_want_write_file(filp);
3414 if (ret)
3415 return ret;
3416
3417 f2fs_balance_fs(F2FS_I_SB(inode), true);
3418
3419 inode_lock(inode);
3420
3421 writecount = atomic_read(&inode->i_writecount);
3422 if ((filp->f_mode & FMODE_WRITE && writecount != 1) ||
3423 (!(filp->f_mode & FMODE_WRITE) && writecount)) {
3424 ret = -EBUSY;
3425 goto out;
3426 }
3427
3428 if (IS_IMMUTABLE(inode)) {
3429 ret = -EINVAL;
3430 goto out;
3431 }
3432
3433 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
3434 if (ret)
3435 goto out;
3436
3437 F2FS_I(inode)->i_flags |= F2FS_IMMUTABLE_FL;
3438 f2fs_set_inode_flags(inode);
3439 inode->i_ctime = current_time(inode);
3440 f2fs_mark_inode_dirty_sync(inode, true);
3441
3442 if (!atomic_read(&F2FS_I(inode)->i_compr_blocks))
3443 goto out;
3444
3445 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3446 down_write(&F2FS_I(inode)->i_mmap_sem);
3447
3448 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
3449
3450 while (page_idx < last_idx) {
3451 struct dnode_of_data dn;
3452 pgoff_t end_offset, count;
3453
3454 set_new_dnode(&dn, inode, NULL, NULL, 0);
3455 ret = f2fs_get_dnode_of_data(&dn, page_idx, LOOKUP_NODE);
3456 if (ret) {
3457 if (ret == -ENOENT) {
3458 page_idx = f2fs_get_next_page_offset(&dn,
3459 page_idx);
3460 ret = 0;
3461 continue;
3462 }
3463 break;
3464 }
3465
3466 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3467 count = min(end_offset - dn.ofs_in_node, last_idx - page_idx);
3468 count = round_up(count, F2FS_I(inode)->i_cluster_size);
3469
3470 ret = release_compress_blocks(&dn, count);
3471
3472 f2fs_put_dnode(&dn);
3473
3474 if (ret < 0)
3475 break;
3476
3477 page_idx += count;
3478 released_blocks += ret;
3479 }
3480
3481 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3482 up_write(&F2FS_I(inode)->i_mmap_sem);
3483 out:
3484 inode_unlock(inode);
3485
3486 mnt_drop_write_file(filp);
3487
3488 if (ret >= 0) {
3489 ret = put_user(released_blocks, (u64 __user *)arg);
3490 } else if (released_blocks &&
3491 atomic_read(&F2FS_I(inode)->i_compr_blocks)) {
3492 set_sbi_flag(sbi, SBI_NEED_FSCK);
3493 f2fs_warn(sbi, "%s: partial blocks were released i_ino=%lx "
3494 "iblocks=%llu, released=%u, compr_blocks=%u, "
3495 "run fsck to fix.",
3496 __func__, inode->i_ino, inode->i_blocks,
3497 released_blocks,
3498 atomic_read(&F2FS_I(inode)->i_compr_blocks));
3499 }
3500
3501 return ret;
3502 }
3503
reserve_compress_blocks(struct dnode_of_data * dn,pgoff_t count)3504 static int reserve_compress_blocks(struct dnode_of_data *dn, pgoff_t count)
3505 {
3506 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
3507 unsigned int reserved_blocks = 0;
3508 int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
3509 block_t blkaddr;
3510 int i;
3511
3512 for (i = 0; i < count; i++) {
3513 blkaddr = data_blkaddr(dn->inode, dn->node_page,
3514 dn->ofs_in_node + i);
3515
3516 if (!__is_valid_data_blkaddr(blkaddr))
3517 continue;
3518 if (unlikely(!f2fs_is_valid_blkaddr(sbi, blkaddr,
3519 DATA_GENERIC_ENHANCE)))
3520 return -EFSCORRUPTED;
3521 }
3522
3523 while (count) {
3524 int compr_blocks = 0;
3525 blkcnt_t reserved;
3526 int ret;
3527
3528 for (i = 0; i < cluster_size; i++, dn->ofs_in_node++) {
3529 blkaddr = f2fs_data_blkaddr(dn);
3530
3531 if (i == 0) {
3532 if (blkaddr == COMPRESS_ADDR)
3533 continue;
3534 dn->ofs_in_node += cluster_size;
3535 goto next;
3536 }
3537
3538 if (__is_valid_data_blkaddr(blkaddr)) {
3539 compr_blocks++;
3540 continue;
3541 }
3542
3543 dn->data_blkaddr = NEW_ADDR;
3544 f2fs_set_data_blkaddr(dn);
3545 }
3546
3547 reserved = cluster_size - compr_blocks;
3548 ret = inc_valid_block_count(sbi, dn->inode, &reserved);
3549 if (ret)
3550 return ret;
3551
3552 if (reserved != cluster_size - compr_blocks)
3553 return -ENOSPC;
3554
3555 f2fs_i_compr_blocks_update(dn->inode, compr_blocks, true);
3556
3557 reserved_blocks += reserved;
3558 next:
3559 count -= cluster_size;
3560 }
3561
3562 return reserved_blocks;
3563 }
3564
f2fs_reserve_compress_blocks(struct file * filp,unsigned long arg)3565 static int f2fs_reserve_compress_blocks(struct file *filp, unsigned long arg)
3566 {
3567 struct inode *inode = file_inode(filp);
3568 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3569 pgoff_t page_idx = 0, last_idx;
3570 unsigned int reserved_blocks = 0;
3571 int ret;
3572
3573 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3574 return -EOPNOTSUPP;
3575
3576 if (!f2fs_compressed_file(inode))
3577 return -EINVAL;
3578
3579 if (f2fs_readonly(sbi->sb))
3580 return -EROFS;
3581
3582 ret = mnt_want_write_file(filp);
3583 if (ret)
3584 return ret;
3585
3586 if (atomic_read(&F2FS_I(inode)->i_compr_blocks))
3587 goto out;
3588
3589 f2fs_balance_fs(F2FS_I_SB(inode), true);
3590
3591 inode_lock(inode);
3592
3593 if (!IS_IMMUTABLE(inode)) {
3594 ret = -EINVAL;
3595 goto unlock_inode;
3596 }
3597
3598 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3599 down_write(&F2FS_I(inode)->i_mmap_sem);
3600
3601 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
3602
3603 while (page_idx < last_idx) {
3604 struct dnode_of_data dn;
3605 pgoff_t end_offset, count;
3606
3607 set_new_dnode(&dn, inode, NULL, NULL, 0);
3608 ret = f2fs_get_dnode_of_data(&dn, page_idx, LOOKUP_NODE);
3609 if (ret) {
3610 if (ret == -ENOENT) {
3611 page_idx = f2fs_get_next_page_offset(&dn,
3612 page_idx);
3613 ret = 0;
3614 continue;
3615 }
3616 break;
3617 }
3618
3619 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3620 count = min(end_offset - dn.ofs_in_node, last_idx - page_idx);
3621 count = round_up(count, F2FS_I(inode)->i_cluster_size);
3622
3623 ret = reserve_compress_blocks(&dn, count);
3624
3625 f2fs_put_dnode(&dn);
3626
3627 if (ret < 0)
3628 break;
3629
3630 page_idx += count;
3631 reserved_blocks += ret;
3632 }
3633
3634 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3635 up_write(&F2FS_I(inode)->i_mmap_sem);
3636
3637 if (ret >= 0) {
3638 F2FS_I(inode)->i_flags &= ~F2FS_IMMUTABLE_FL;
3639 f2fs_set_inode_flags(inode);
3640 inode->i_ctime = current_time(inode);
3641 f2fs_mark_inode_dirty_sync(inode, true);
3642 }
3643 unlock_inode:
3644 inode_unlock(inode);
3645 out:
3646 mnt_drop_write_file(filp);
3647
3648 if (ret >= 0) {
3649 ret = put_user(reserved_blocks, (u64 __user *)arg);
3650 } else if (reserved_blocks &&
3651 atomic_read(&F2FS_I(inode)->i_compr_blocks)) {
3652 set_sbi_flag(sbi, SBI_NEED_FSCK);
3653 f2fs_warn(sbi, "%s: partial blocks were released i_ino=%lx "
3654 "iblocks=%llu, reserved=%u, compr_blocks=%u, "
3655 "run fsck to fix.",
3656 __func__, inode->i_ino, inode->i_blocks,
3657 reserved_blocks,
3658 atomic_read(&F2FS_I(inode)->i_compr_blocks));
3659 }
3660
3661 return ret;
3662 }
3663
f2fs_secure_erase(struct block_device * bdev,struct inode * inode,pgoff_t off,block_t block,block_t len,u32 flags)3664 static int f2fs_secure_erase(struct block_device *bdev, struct inode *inode,
3665 pgoff_t off, block_t block, block_t len, u32 flags)
3666 {
3667 struct request_queue *q = bdev_get_queue(bdev);
3668 sector_t sector = SECTOR_FROM_BLOCK(block);
3669 sector_t nr_sects = SECTOR_FROM_BLOCK(len);
3670 int ret = 0;
3671
3672 if (!q)
3673 return -ENXIO;
3674
3675 if (flags & F2FS_TRIM_FILE_DISCARD)
3676 ret = blkdev_issue_discard(bdev, sector, nr_sects, GFP_NOFS,
3677 blk_queue_secure_erase(q) ?
3678 BLKDEV_DISCARD_SECURE : 0);
3679
3680 if (!ret && (flags & F2FS_TRIM_FILE_ZEROOUT)) {
3681 if (IS_ENCRYPTED(inode))
3682 ret = fscrypt_zeroout_range(inode, off, block, len);
3683 else
3684 ret = blkdev_issue_zeroout(bdev, sector, nr_sects,
3685 GFP_NOFS, 0);
3686 }
3687
3688 return ret;
3689 }
3690
f2fs_sec_trim_file(struct file * filp,unsigned long arg)3691 static int f2fs_sec_trim_file(struct file *filp, unsigned long arg)
3692 {
3693 struct inode *inode = file_inode(filp);
3694 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3695 struct address_space *mapping = inode->i_mapping;
3696 struct block_device *prev_bdev = NULL;
3697 struct f2fs_sectrim_range range;
3698 pgoff_t index, pg_end, prev_index = 0;
3699 block_t prev_block = 0, len = 0;
3700 loff_t end_addr;
3701 bool to_end = false;
3702 int ret = 0;
3703
3704 if (!(filp->f_mode & FMODE_WRITE))
3705 return -EBADF;
3706
3707 if (copy_from_user(&range, (struct f2fs_sectrim_range __user *)arg,
3708 sizeof(range)))
3709 return -EFAULT;
3710
3711 if (range.flags == 0 || (range.flags & ~F2FS_TRIM_FILE_MASK) ||
3712 !S_ISREG(inode->i_mode))
3713 return -EINVAL;
3714
3715 if (((range.flags & F2FS_TRIM_FILE_DISCARD) &&
3716 !f2fs_hw_support_discard(sbi)) ||
3717 ((range.flags & F2FS_TRIM_FILE_ZEROOUT) &&
3718 IS_ENCRYPTED(inode) && f2fs_is_multi_device(sbi)))
3719 return -EOPNOTSUPP;
3720
3721 file_start_write(filp);
3722 inode_lock(inode);
3723
3724 if (f2fs_is_atomic_file(inode) || f2fs_compressed_file(inode) ||
3725 range.start >= inode->i_size) {
3726 ret = -EINVAL;
3727 goto err;
3728 }
3729
3730 if (range.len == 0)
3731 goto err;
3732
3733 if (inode->i_size - range.start > range.len) {
3734 end_addr = range.start + range.len;
3735 } else {
3736 end_addr = range.len == (u64)-1 ?
3737 sbi->sb->s_maxbytes : inode->i_size;
3738 to_end = true;
3739 }
3740
3741 if (!IS_ALIGNED(range.start, F2FS_BLKSIZE) ||
3742 (!to_end && !IS_ALIGNED(end_addr, F2FS_BLKSIZE))) {
3743 ret = -EINVAL;
3744 goto err;
3745 }
3746
3747 index = F2FS_BYTES_TO_BLK(range.start);
3748 pg_end = DIV_ROUND_UP(end_addr, F2FS_BLKSIZE);
3749
3750 ret = f2fs_convert_inline_inode(inode);
3751 if (ret)
3752 goto err;
3753
3754 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3755 down_write(&F2FS_I(inode)->i_mmap_sem);
3756
3757 ret = filemap_write_and_wait_range(mapping, range.start,
3758 to_end ? LLONG_MAX : end_addr - 1);
3759 if (ret)
3760 goto out;
3761
3762 truncate_inode_pages_range(mapping, range.start,
3763 to_end ? -1 : end_addr - 1);
3764
3765 while (index < pg_end) {
3766 struct dnode_of_data dn;
3767 pgoff_t end_offset, count;
3768 int i;
3769
3770 set_new_dnode(&dn, inode, NULL, NULL, 0);
3771 ret = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE);
3772 if (ret) {
3773 if (ret == -ENOENT) {
3774 index = f2fs_get_next_page_offset(&dn, index);
3775 continue;
3776 }
3777 goto out;
3778 }
3779
3780 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3781 count = min(end_offset - dn.ofs_in_node, pg_end - index);
3782 for (i = 0; i < count; i++, index++, dn.ofs_in_node++) {
3783 struct block_device *cur_bdev;
3784 block_t blkaddr = f2fs_data_blkaddr(&dn);
3785
3786 if (!__is_valid_data_blkaddr(blkaddr))
3787 continue;
3788
3789 if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
3790 DATA_GENERIC_ENHANCE)) {
3791 ret = -EFSCORRUPTED;
3792 f2fs_put_dnode(&dn);
3793 goto out;
3794 }
3795
3796 cur_bdev = f2fs_target_device(sbi, blkaddr, NULL);
3797 if (f2fs_is_multi_device(sbi)) {
3798 int di = f2fs_target_device_index(sbi, blkaddr);
3799
3800 blkaddr -= FDEV(di).start_blk;
3801 }
3802
3803 if (len) {
3804 if (prev_bdev == cur_bdev &&
3805 index == prev_index + len &&
3806 blkaddr == prev_block + len) {
3807 len++;
3808 } else {
3809 ret = f2fs_secure_erase(prev_bdev,
3810 inode, prev_index, prev_block,
3811 len, range.flags);
3812 if (ret) {
3813 f2fs_put_dnode(&dn);
3814 goto out;
3815 }
3816
3817 len = 0;
3818 }
3819 }
3820
3821 if (!len) {
3822 prev_bdev = cur_bdev;
3823 prev_index = index;
3824 prev_block = blkaddr;
3825 len = 1;
3826 }
3827 }
3828
3829 f2fs_put_dnode(&dn);
3830
3831 if (fatal_signal_pending(current)) {
3832 ret = -EINTR;
3833 goto out;
3834 }
3835 cond_resched();
3836 }
3837
3838 if (len)
3839 ret = f2fs_secure_erase(prev_bdev, inode, prev_index,
3840 prev_block, len, range.flags);
3841 out:
3842 up_write(&F2FS_I(inode)->i_mmap_sem);
3843 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3844 err:
3845 inode_unlock(inode);
3846 file_end_write(filp);
3847
3848 return ret;
3849 }
3850
f2fs_ioc_get_compress_option(struct file * filp,unsigned long arg)3851 static int f2fs_ioc_get_compress_option(struct file *filp, unsigned long arg)
3852 {
3853 struct inode *inode = file_inode(filp);
3854 struct f2fs_comp_option option;
3855
3856 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3857 return -EOPNOTSUPP;
3858
3859 inode_lock_shared(inode);
3860
3861 if (!f2fs_compressed_file(inode)) {
3862 inode_unlock_shared(inode);
3863 return -ENODATA;
3864 }
3865
3866 option.algorithm = F2FS_I(inode)->i_compress_algorithm;
3867 option.log_cluster_size = F2FS_I(inode)->i_log_cluster_size;
3868
3869 inode_unlock_shared(inode);
3870
3871 if (copy_to_user((struct f2fs_comp_option __user *)arg, &option,
3872 sizeof(option)))
3873 return -EFAULT;
3874
3875 return 0;
3876 }
3877
f2fs_ioc_set_compress_option(struct file * filp,unsigned long arg)3878 static int f2fs_ioc_set_compress_option(struct file *filp, unsigned long arg)
3879 {
3880 struct inode *inode = file_inode(filp);
3881 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3882 struct f2fs_comp_option option;
3883 int ret = 0;
3884
3885 if (!f2fs_sb_has_compression(sbi))
3886 return -EOPNOTSUPP;
3887
3888 if (!(filp->f_mode & FMODE_WRITE))
3889 return -EBADF;
3890
3891 if (copy_from_user(&option, (struct f2fs_comp_option __user *)arg,
3892 sizeof(option)))
3893 return -EFAULT;
3894
3895 if (!f2fs_compressed_file(inode) ||
3896 option.log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
3897 option.log_cluster_size > MAX_COMPRESS_LOG_SIZE ||
3898 option.algorithm >= COMPRESS_MAX)
3899 return -EINVAL;
3900
3901 file_start_write(filp);
3902 inode_lock(inode);
3903
3904 if (f2fs_is_mmap_file(inode) || get_dirty_pages(inode)) {
3905 ret = -EBUSY;
3906 goto out;
3907 }
3908
3909 if (inode->i_size != 0) {
3910 ret = -EFBIG;
3911 goto out;
3912 }
3913
3914 F2FS_I(inode)->i_compress_algorithm = option.algorithm;
3915 F2FS_I(inode)->i_log_cluster_size = option.log_cluster_size;
3916 F2FS_I(inode)->i_cluster_size = 1 << option.log_cluster_size;
3917 f2fs_mark_inode_dirty_sync(inode, true);
3918
3919 if (!f2fs_is_compress_backend_ready(inode))
3920 f2fs_warn(sbi, "compression algorithm is successfully set, "
3921 "but current kernel doesn't support this algorithm.");
3922 out:
3923 inode_unlock(inode);
3924 file_end_write(filp);
3925
3926 return ret;
3927 }
3928
redirty_blocks(struct inode * inode,pgoff_t page_idx,int len)3929 static int redirty_blocks(struct inode *inode, pgoff_t page_idx, int len)
3930 {
3931 DEFINE_READAHEAD(ractl, NULL, NULL, inode->i_mapping, page_idx);
3932 struct address_space *mapping = inode->i_mapping;
3933 struct page *page;
3934 pgoff_t redirty_idx = page_idx;
3935 int i, page_len = 0, ret = 0;
3936
3937 page_cache_ra_unbounded(&ractl, len, 0);
3938
3939 for (i = 0; i < len; i++, page_idx++) {
3940 page = read_cache_page(mapping, page_idx, NULL, NULL);
3941 if (IS_ERR(page)) {
3942 ret = PTR_ERR(page);
3943 break;
3944 }
3945 page_len++;
3946 }
3947
3948 for (i = 0; i < page_len; i++, redirty_idx++) {
3949 page = find_lock_page(mapping, redirty_idx);
3950 if (!page) {
3951 ret = -ENOMEM;
3952 break;
3953 }
3954 set_page_dirty(page);
3955 f2fs_put_page(page, 1);
3956 f2fs_put_page(page, 0);
3957 }
3958
3959 return ret;
3960 }
3961
f2fs_ioc_decompress_file(struct file * filp,unsigned long arg)3962 static int f2fs_ioc_decompress_file(struct file *filp, unsigned long arg)
3963 {
3964 struct inode *inode = file_inode(filp);
3965 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3966 struct f2fs_inode_info *fi = F2FS_I(inode);
3967 pgoff_t page_idx = 0, last_idx;
3968 unsigned int blk_per_seg = sbi->blocks_per_seg;
3969 int cluster_size = F2FS_I(inode)->i_cluster_size;
3970 int count, ret;
3971
3972 if (!f2fs_sb_has_compression(sbi) ||
3973 F2FS_OPTION(sbi).compress_mode != COMPR_MODE_USER)
3974 return -EOPNOTSUPP;
3975
3976 if (!(filp->f_mode & FMODE_WRITE))
3977 return -EBADF;
3978
3979 if (!f2fs_compressed_file(inode))
3980 return -EINVAL;
3981
3982 f2fs_balance_fs(F2FS_I_SB(inode), true);
3983
3984 file_start_write(filp);
3985 inode_lock(inode);
3986
3987 if (!f2fs_is_compress_backend_ready(inode)) {
3988 ret = -EOPNOTSUPP;
3989 goto out;
3990 }
3991
3992 if (f2fs_is_mmap_file(inode)) {
3993 ret = -EBUSY;
3994 goto out;
3995 }
3996
3997 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
3998 if (ret)
3999 goto out;
4000
4001 if (!atomic_read(&fi->i_compr_blocks))
4002 goto out;
4003
4004 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
4005
4006 count = last_idx - page_idx;
4007 while (count) {
4008 int len = min(cluster_size, count);
4009
4010 ret = redirty_blocks(inode, page_idx, len);
4011 if (ret < 0)
4012 break;
4013
4014 if (get_dirty_pages(inode) >= blk_per_seg)
4015 filemap_fdatawrite(inode->i_mapping);
4016
4017 count -= len;
4018 page_idx += len;
4019 }
4020
4021 if (!ret)
4022 ret = filemap_write_and_wait_range(inode->i_mapping, 0,
4023 LLONG_MAX);
4024
4025 if (ret)
4026 f2fs_warn(sbi, "%s: The file might be partially decompressed "
4027 "(errno=%d). Please delete the file.\n",
4028 __func__, ret);
4029 out:
4030 inode_unlock(inode);
4031 file_end_write(filp);
4032
4033 return ret;
4034 }
4035
f2fs_ioc_compress_file(struct file * filp,unsigned long arg)4036 static int f2fs_ioc_compress_file(struct file *filp, unsigned long arg)
4037 {
4038 struct inode *inode = file_inode(filp);
4039 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4040 pgoff_t page_idx = 0, last_idx;
4041 unsigned int blk_per_seg = sbi->blocks_per_seg;
4042 int cluster_size = F2FS_I(inode)->i_cluster_size;
4043 int count, ret;
4044
4045 if (!f2fs_sb_has_compression(sbi) ||
4046 F2FS_OPTION(sbi).compress_mode != COMPR_MODE_USER)
4047 return -EOPNOTSUPP;
4048
4049 if (!(filp->f_mode & FMODE_WRITE))
4050 return -EBADF;
4051
4052 if (!f2fs_compressed_file(inode))
4053 return -EINVAL;
4054
4055 f2fs_balance_fs(F2FS_I_SB(inode), true);
4056
4057 file_start_write(filp);
4058 inode_lock(inode);
4059
4060 if (!f2fs_is_compress_backend_ready(inode)) {
4061 ret = -EOPNOTSUPP;
4062 goto out;
4063 }
4064
4065 if (f2fs_is_mmap_file(inode)) {
4066 ret = -EBUSY;
4067 goto out;
4068 }
4069
4070 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
4071 if (ret)
4072 goto out;
4073
4074 set_inode_flag(inode, FI_ENABLE_COMPRESS);
4075
4076 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
4077
4078 count = last_idx - page_idx;
4079 while (count) {
4080 int len = min(cluster_size, count);
4081
4082 ret = redirty_blocks(inode, page_idx, len);
4083 if (ret < 0)
4084 break;
4085
4086 if (get_dirty_pages(inode) >= blk_per_seg)
4087 filemap_fdatawrite(inode->i_mapping);
4088
4089 count -= len;
4090 page_idx += len;
4091 }
4092
4093 if (!ret)
4094 ret = filemap_write_and_wait_range(inode->i_mapping, 0,
4095 LLONG_MAX);
4096
4097 clear_inode_flag(inode, FI_ENABLE_COMPRESS);
4098
4099 if (ret)
4100 f2fs_warn(sbi, "%s: The file might be partially compressed "
4101 "(errno=%d). Please delete the file.\n",
4102 __func__, ret);
4103 out:
4104 inode_unlock(inode);
4105 file_end_write(filp);
4106
4107 return ret;
4108 }
4109
__f2fs_ioctl(struct file * filp,unsigned int cmd,unsigned long arg)4110 static long __f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
4111 {
4112 switch (cmd) {
4113 case FS_IOC_GETVERSION:
4114 return f2fs_ioc_getversion(filp, arg);
4115 case F2FS_IOC_START_ATOMIC_WRITE:
4116 return f2fs_ioc_start_atomic_write(filp);
4117 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
4118 return f2fs_ioc_commit_atomic_write(filp);
4119 case F2FS_IOC_START_VOLATILE_WRITE:
4120 return f2fs_ioc_start_volatile_write(filp);
4121 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
4122 return f2fs_ioc_release_volatile_write(filp);
4123 case F2FS_IOC_ABORT_VOLATILE_WRITE:
4124 return f2fs_ioc_abort_volatile_write(filp);
4125 case F2FS_IOC_SHUTDOWN:
4126 return f2fs_ioc_shutdown(filp, arg);
4127 case FITRIM:
4128 return f2fs_ioc_fitrim(filp, arg);
4129 case FS_IOC_SET_ENCRYPTION_POLICY:
4130 return f2fs_ioc_set_encryption_policy(filp, arg);
4131 case FS_IOC_GET_ENCRYPTION_POLICY:
4132 return f2fs_ioc_get_encryption_policy(filp, arg);
4133 case FS_IOC_GET_ENCRYPTION_PWSALT:
4134 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
4135 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
4136 return f2fs_ioc_get_encryption_policy_ex(filp, arg);
4137 case FS_IOC_ADD_ENCRYPTION_KEY:
4138 return f2fs_ioc_add_encryption_key(filp, arg);
4139 case FS_IOC_REMOVE_ENCRYPTION_KEY:
4140 return f2fs_ioc_remove_encryption_key(filp, arg);
4141 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
4142 return f2fs_ioc_remove_encryption_key_all_users(filp, arg);
4143 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
4144 return f2fs_ioc_get_encryption_key_status(filp, arg);
4145 case FS_IOC_GET_ENCRYPTION_NONCE:
4146 return f2fs_ioc_get_encryption_nonce(filp, arg);
4147 case F2FS_IOC_GARBAGE_COLLECT:
4148 return f2fs_ioc_gc(filp, arg);
4149 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
4150 return f2fs_ioc_gc_range(filp, arg);
4151 case F2FS_IOC_WRITE_CHECKPOINT:
4152 return f2fs_ioc_write_checkpoint(filp, arg);
4153 case F2FS_IOC_DEFRAGMENT:
4154 return f2fs_ioc_defragment(filp, arg);
4155 case F2FS_IOC_MOVE_RANGE:
4156 return f2fs_ioc_move_range(filp, arg);
4157 case F2FS_IOC_FLUSH_DEVICE:
4158 return f2fs_ioc_flush_device(filp, arg);
4159 case F2FS_IOC_GET_FEATURES:
4160 return f2fs_ioc_get_features(filp, arg);
4161 case F2FS_IOC_GET_PIN_FILE:
4162 return f2fs_ioc_get_pin_file(filp, arg);
4163 case F2FS_IOC_SET_PIN_FILE:
4164 return f2fs_ioc_set_pin_file(filp, arg);
4165 case F2FS_IOC_PRECACHE_EXTENTS:
4166 return f2fs_ioc_precache_extents(filp, arg);
4167 case F2FS_IOC_RESIZE_FS:
4168 return f2fs_ioc_resize_fs(filp, arg);
4169 case FS_IOC_ENABLE_VERITY:
4170 return f2fs_ioc_enable_verity(filp, arg);
4171 case FS_IOC_MEASURE_VERITY:
4172 return f2fs_ioc_measure_verity(filp, arg);
4173 case FS_IOC_READ_VERITY_METADATA:
4174 return f2fs_ioc_read_verity_metadata(filp, arg);
4175 case FS_IOC_GETFSLABEL:
4176 return f2fs_ioc_getfslabel(filp, arg);
4177 case FS_IOC_SETFSLABEL:
4178 return f2fs_ioc_setfslabel(filp, arg);
4179 case F2FS_IOC_GET_COMPRESS_BLOCKS:
4180 return f2fs_get_compress_blocks(filp, arg);
4181 case F2FS_IOC_RELEASE_COMPRESS_BLOCKS:
4182 return f2fs_release_compress_blocks(filp, arg);
4183 case F2FS_IOC_RESERVE_COMPRESS_BLOCKS:
4184 return f2fs_reserve_compress_blocks(filp, arg);
4185 case F2FS_IOC_SEC_TRIM_FILE:
4186 return f2fs_sec_trim_file(filp, arg);
4187 case F2FS_IOC_GET_COMPRESS_OPTION:
4188 return f2fs_ioc_get_compress_option(filp, arg);
4189 case F2FS_IOC_SET_COMPRESS_OPTION:
4190 return f2fs_ioc_set_compress_option(filp, arg);
4191 case F2FS_IOC_DECOMPRESS_FILE:
4192 return f2fs_ioc_decompress_file(filp, arg);
4193 case F2FS_IOC_COMPRESS_FILE:
4194 return f2fs_ioc_compress_file(filp, arg);
4195 default:
4196 return -ENOTTY;
4197 }
4198 }
4199
f2fs_ioctl(struct file * filp,unsigned int cmd,unsigned long arg)4200 long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
4201 {
4202 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
4203 return -EIO;
4204 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(filp))))
4205 return -ENOSPC;
4206
4207 return __f2fs_ioctl(filp, cmd, arg);
4208 }
4209
f2fs_file_read_iter(struct kiocb * iocb,struct iov_iter * iter)4210 static ssize_t f2fs_file_read_iter(struct kiocb *iocb, struct iov_iter *iter)
4211 {
4212 struct file *file = iocb->ki_filp;
4213 struct inode *inode = file_inode(file);
4214 int ret;
4215
4216 if (!f2fs_is_compress_backend_ready(inode))
4217 return -EOPNOTSUPP;
4218
4219 ret = generic_file_read_iter(iocb, iter);
4220
4221 if (ret > 0)
4222 f2fs_update_iostat(F2FS_I_SB(inode), APP_READ_IO, ret);
4223
4224 return ret;
4225 }
4226
f2fs_file_write_iter(struct kiocb * iocb,struct iov_iter * from)4227 static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
4228 {
4229 struct file *file = iocb->ki_filp;
4230 struct inode *inode = file_inode(file);
4231 ssize_t ret;
4232
4233 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) {
4234 ret = -EIO;
4235 goto out;
4236 }
4237
4238 if (!f2fs_is_compress_backend_ready(inode)) {
4239 ret = -EOPNOTSUPP;
4240 goto out;
4241 }
4242
4243 if (iocb->ki_flags & IOCB_NOWAIT) {
4244 if (!inode_trylock(inode)) {
4245 ret = -EAGAIN;
4246 goto out;
4247 }
4248 } else {
4249 inode_lock(inode);
4250 }
4251
4252 if (unlikely(IS_IMMUTABLE(inode))) {
4253 ret = -EPERM;
4254 goto unlock;
4255 }
4256
4257 ret = generic_write_checks(iocb, from);
4258 if (ret > 0) {
4259 bool preallocated = false;
4260 size_t target_size = 0;
4261 int err;
4262
4263 if (iov_iter_fault_in_readable(from, iov_iter_count(from)))
4264 set_inode_flag(inode, FI_NO_PREALLOC);
4265
4266 if ((iocb->ki_flags & IOCB_NOWAIT)) {
4267 if (!f2fs_overwrite_io(inode, iocb->ki_pos,
4268 iov_iter_count(from)) ||
4269 f2fs_has_inline_data(inode) ||
4270 f2fs_force_buffered_io(inode, iocb, from)) {
4271 clear_inode_flag(inode, FI_NO_PREALLOC);
4272 inode_unlock(inode);
4273 ret = -EAGAIN;
4274 goto out;
4275 }
4276 goto write;
4277 }
4278
4279 if (is_inode_flag_set(inode, FI_NO_PREALLOC))
4280 goto write;
4281
4282 if (iocb->ki_flags & IOCB_DIRECT) {
4283 /*
4284 * Convert inline data for Direct I/O before entering
4285 * f2fs_direct_IO().
4286 */
4287 err = f2fs_convert_inline_inode(inode);
4288 if (err)
4289 goto out_err;
4290 /*
4291 * If force_buffere_io() is true, we have to allocate
4292 * blocks all the time, since f2fs_direct_IO will fall
4293 * back to buffered IO.
4294 */
4295 if (!f2fs_force_buffered_io(inode, iocb, from) &&
4296 allow_outplace_dio(inode, iocb, from))
4297 goto write;
4298 }
4299 preallocated = true;
4300 target_size = iocb->ki_pos + iov_iter_count(from);
4301
4302 err = f2fs_preallocate_blocks(iocb, from);
4303 if (err) {
4304 out_err:
4305 clear_inode_flag(inode, FI_NO_PREALLOC);
4306 inode_unlock(inode);
4307 ret = err;
4308 goto out;
4309 }
4310 write:
4311 ret = __generic_file_write_iter(iocb, from);
4312 clear_inode_flag(inode, FI_NO_PREALLOC);
4313
4314 /* if we couldn't write data, we should deallocate blocks. */
4315 if (preallocated && i_size_read(inode) < target_size) {
4316 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
4317 down_write(&F2FS_I(inode)->i_mmap_sem);
4318 f2fs_truncate(inode);
4319 up_write(&F2FS_I(inode)->i_mmap_sem);
4320 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
4321 }
4322
4323 if (ret > 0)
4324 f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret);
4325 }
4326 unlock:
4327 inode_unlock(inode);
4328 out:
4329 trace_f2fs_file_write_iter(inode, iocb->ki_pos,
4330 iov_iter_count(from), ret);
4331 if (ret > 0)
4332 ret = generic_write_sync(iocb, ret);
4333 return ret;
4334 }
4335
4336 #ifdef CONFIG_COMPAT
4337 struct compat_f2fs_gc_range {
4338 u32 sync;
4339 compat_u64 start;
4340 compat_u64 len;
4341 };
4342 #define F2FS_IOC32_GARBAGE_COLLECT_RANGE _IOW(F2FS_IOCTL_MAGIC, 11,\
4343 struct compat_f2fs_gc_range)
4344
f2fs_compat_ioc_gc_range(struct file * file,unsigned long arg)4345 static int f2fs_compat_ioc_gc_range(struct file *file, unsigned long arg)
4346 {
4347 struct compat_f2fs_gc_range __user *urange;
4348 struct f2fs_gc_range range;
4349 int err;
4350
4351 urange = compat_ptr(arg);
4352 err = get_user(range.sync, &urange->sync);
4353 err |= get_user(range.start, &urange->start);
4354 err |= get_user(range.len, &urange->len);
4355 if (err)
4356 return -EFAULT;
4357
4358 return __f2fs_ioc_gc_range(file, &range);
4359 }
4360
4361 struct compat_f2fs_move_range {
4362 u32 dst_fd;
4363 compat_u64 pos_in;
4364 compat_u64 pos_out;
4365 compat_u64 len;
4366 };
4367 #define F2FS_IOC32_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \
4368 struct compat_f2fs_move_range)
4369
f2fs_compat_ioc_move_range(struct file * file,unsigned long arg)4370 static int f2fs_compat_ioc_move_range(struct file *file, unsigned long arg)
4371 {
4372 struct compat_f2fs_move_range __user *urange;
4373 struct f2fs_move_range range;
4374 int err;
4375
4376 urange = compat_ptr(arg);
4377 err = get_user(range.dst_fd, &urange->dst_fd);
4378 err |= get_user(range.pos_in, &urange->pos_in);
4379 err |= get_user(range.pos_out, &urange->pos_out);
4380 err |= get_user(range.len, &urange->len);
4381 if (err)
4382 return -EFAULT;
4383
4384 return __f2fs_ioc_move_range(file, &range);
4385 }
4386
f2fs_compat_ioctl(struct file * file,unsigned int cmd,unsigned long arg)4387 long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
4388 {
4389 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
4390 return -EIO;
4391 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(file))))
4392 return -ENOSPC;
4393
4394 switch (cmd) {
4395 case FS_IOC32_GETVERSION:
4396 cmd = FS_IOC_GETVERSION;
4397 break;
4398 case F2FS_IOC32_GARBAGE_COLLECT_RANGE:
4399 return f2fs_compat_ioc_gc_range(file, arg);
4400 case F2FS_IOC32_MOVE_RANGE:
4401 return f2fs_compat_ioc_move_range(file, arg);
4402 case F2FS_IOC_START_ATOMIC_WRITE:
4403 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
4404 case F2FS_IOC_START_VOLATILE_WRITE:
4405 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
4406 case F2FS_IOC_ABORT_VOLATILE_WRITE:
4407 case F2FS_IOC_SHUTDOWN:
4408 case FITRIM:
4409 case FS_IOC_SET_ENCRYPTION_POLICY:
4410 case FS_IOC_GET_ENCRYPTION_PWSALT:
4411 case FS_IOC_GET_ENCRYPTION_POLICY:
4412 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
4413 case FS_IOC_ADD_ENCRYPTION_KEY:
4414 case FS_IOC_REMOVE_ENCRYPTION_KEY:
4415 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
4416 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
4417 case FS_IOC_GET_ENCRYPTION_NONCE:
4418 case F2FS_IOC_GARBAGE_COLLECT:
4419 case F2FS_IOC_WRITE_CHECKPOINT:
4420 case F2FS_IOC_DEFRAGMENT:
4421 case F2FS_IOC_FLUSH_DEVICE:
4422 case F2FS_IOC_GET_FEATURES:
4423 case F2FS_IOC_GET_PIN_FILE:
4424 case F2FS_IOC_SET_PIN_FILE:
4425 case F2FS_IOC_PRECACHE_EXTENTS:
4426 case F2FS_IOC_RESIZE_FS:
4427 case FS_IOC_ENABLE_VERITY:
4428 case FS_IOC_MEASURE_VERITY:
4429 case FS_IOC_READ_VERITY_METADATA:
4430 case FS_IOC_GETFSLABEL:
4431 case FS_IOC_SETFSLABEL:
4432 case F2FS_IOC_GET_COMPRESS_BLOCKS:
4433 case F2FS_IOC_RELEASE_COMPRESS_BLOCKS:
4434 case F2FS_IOC_RESERVE_COMPRESS_BLOCKS:
4435 case F2FS_IOC_SEC_TRIM_FILE:
4436 case F2FS_IOC_GET_COMPRESS_OPTION:
4437 case F2FS_IOC_SET_COMPRESS_OPTION:
4438 case F2FS_IOC_DECOMPRESS_FILE:
4439 case F2FS_IOC_COMPRESS_FILE:
4440 break;
4441 default:
4442 return -ENOIOCTLCMD;
4443 }
4444 return __f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
4445 }
4446 #endif
4447
4448 const struct file_operations f2fs_file_operations = {
4449 .llseek = f2fs_llseek,
4450 .read_iter = f2fs_file_read_iter,
4451 .write_iter = f2fs_file_write_iter,
4452 .open = f2fs_file_open,
4453 .release = f2fs_release_file,
4454 .mmap = f2fs_file_mmap,
4455 .flush = f2fs_file_flush,
4456 .fsync = f2fs_sync_file,
4457 .fallocate = f2fs_fallocate,
4458 .unlocked_ioctl = f2fs_ioctl,
4459 #ifdef CONFIG_COMPAT
4460 .compat_ioctl = f2fs_compat_ioctl,
4461 #endif
4462 .splice_read = generic_file_splice_read,
4463 .splice_write = iter_file_splice_write,
4464 };
4465