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orangefs: use attach/detach_page_private
[thirdparty/linux.git] / fs / f2fs / file.c
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7c1a000d 1// SPDX-License-Identifier: GPL-2.0
0a8165d7 2/*
fbfa2cc5
JK		 3 * fs/f2fs/file.c
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
fbfa2cc5
JK		 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>
ae51fb31 13#include <linux/blkdev.h>
fbfa2cc5
JK		 14#include <linux/falloc.h>
15#include <linux/types.h>
e9750824 16#include <linux/compat.h>
fbfa2cc5
JK		 17#include <linux/uaccess.h>
18#include <linux/mount.h>
7f7670fe 19#include <linux/pagevec.h>
dc91de78 20#include <linux/uio.h>
8da4b8c4 21#include <linux/uuid.h>
4dd6f977 22#include <linux/file.h>
4507847c 23#include <linux/nls.h>
fbfa2cc5
JK		 24
25#include "f2fs.h"
26#include "node.h"
27#include "segment.h"
28#include "xattr.h"
29#include "acl.h"
c1c1b583 30#include "gc.h"
db9f7c1a 31#include "trace.h"
a2a4a7e4 32#include <trace/events/f2fs.h>
fbfa2cc5 33
ea4d479b 34static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf)
5a3a2d83
QS		 35{
36 struct inode *inode = file_inode(vmf->vma->vm_file);
ea4d479b 37 vm_fault_t ret;
5a3a2d83
QS		 38
39 down_read(&F2FS_I(inode)->i_mmap_sem);
ea4d479b 40 ret = filemap_fault(vmf);
5a3a2d83
QS		 41 up_read(&F2FS_I(inode)->i_mmap_sem);
42
d7648343
CY		 43 trace_f2fs_filemap_fault(inode, vmf->pgoff, (unsigned long)ret);
44
ea4d479b 45 return ret;
5a3a2d83
QS		 46}
47
ea4d479b 48static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf)
fbfa2cc5
JK		 49{
50 struct page *page = vmf->page;
11bac800 51 struct inode *inode = file_inode(vmf->vma->vm_file);
4081363f 52 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
bdf03299 53 struct dnode_of_data dn;
4c8ff709
CY		 54 bool need_alloc = true;
55 int err = 0;
fbfa2cc5 56
1f227a3e
JK		 57 if (unlikely(f2fs_cp_error(sbi))) {
58 err = -EIO;
59 goto err;
60 }
61
00e09c0b
CY		 62 if (!f2fs_is_checkpoint_ready(sbi)) {
63 err = -ENOSPC;
955ebcd3 64 goto err;
00e09c0b 65 }
1f227a3e 66
4c8ff709
CY		 67#ifdef CONFIG_F2FS_FS_COMPRESSION
68 if (f2fs_compressed_file(inode)) {
69 int ret = f2fs_is_compressed_cluster(inode, page->index);
70
71 if (ret < 0) {
72 err = ret;
73 goto err;
74 } else if (ret) {
75 if (ret < F2FS_I(inode)->i_cluster_size) {
76 err = -EAGAIN;
77 goto err;
78 }
79 need_alloc = false;
80 }
81 }
82#endif
bdf03299 83 /* should do out of any locked page */
4c8ff709
CY		 84 if (need_alloc)
85 f2fs_balance_fs(sbi, true);
bdf03299 86
fbfa2cc5 87 sb_start_pagefault(inode->i_sb);
b3d208f9
JK		 88
89 f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
b067ba1f 90
11bac800 91 file_update_time(vmf->vma->vm_file);
5a3a2d83 92 down_read(&F2FS_I(inode)->i_mmap_sem);
fbfa2cc5 93 lock_page(page);
6bacf52f 94 if (unlikely(page->mapping != inode->i_mapping ||
9851e6e1 95 page_offset(page) > i_size_read(inode) ||
6bacf52f 96 !PageUptodate(page))) {
fbfa2cc5
JK		 97 unlock_page(page);
98 err = -EFAULT;
5a3a2d83 99 goto out_sem;
fbfa2cc5
JK		 100 }
101
4c8ff709
CY		 102 if (need_alloc) {
103 /* block allocation */
104 __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true);
105 set_new_dnode(&dn, inode, NULL, NULL, 0);
106 err = f2fs_get_block(&dn, page->index);
107 f2fs_put_dnode(&dn);
108 __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false);
39a86958
CY		 109 }
110
06c7540f
CY		 111#ifdef CONFIG_F2FS_FS_COMPRESSION
112 if (!need_alloc) {
113 set_new_dnode(&dn, inode, NULL, NULL, 0);
114 err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE);
115 f2fs_put_dnode(&dn);
116 }
117#endif
118 if (err) {
119 unlock_page(page);
120 goto out_sem;
39a86958
CY		 121 }
122
bae0ee7a 123 f2fs_wait_on_page_writeback(page, DATA, false, true);
39a86958
CY		 124
125 /* wait for GCed page writeback via META_MAPPING */
126 f2fs_wait_on_block_writeback(inode, dn.data_blkaddr);
127
fbfa2cc5
JK		 128 /*
129 * check to see if the page is mapped already (no holes)
130 */
131 if (PageMappedToDisk(page))
39a86958 132 goto out_sem;
fbfa2cc5
JK		 133
134 /* page is wholly or partially inside EOF */
09cbfeaf 135 if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
9edcdabf 136 i_size_read(inode)) {
193bea1d 137 loff_t offset;
f11e98bd 138
09cbfeaf
KS		 139 offset = i_size_read(inode) & ~PAGE_MASK;
140 zero_user_segment(page, offset, PAGE_SIZE);
fbfa2cc5
JK		 141 }
142 set_page_dirty(page);
237c0790
JK		 143 if (!PageUptodate(page))
144 SetPageUptodate(page);
fbfa2cc5 145
b0af6d49 146 f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE);
c75f2feb 147 f2fs_update_time(sbi, REQ_TIME);
b0af6d49 148
e943a10d 149 trace_f2fs_vm_page_mkwrite(page, DATA);
5a3a2d83
QS		 150out_sem:
151 up_read(&F2FS_I(inode)->i_mmap_sem);
39a86958 152
fbfa2cc5 153 sb_end_pagefault(inode->i_sb);
1f227a3e 154err:
fbfa2cc5
JK		 155 return block_page_mkwrite_return(err);
156}
157
158static const struct vm_operations_struct f2fs_file_vm_ops = {
5a3a2d83 159 .fault = f2fs_filemap_fault,
f1820361 160 .map_pages = filemap_map_pages,
692bb55d 161 .page_mkwrite = f2fs_vm_page_mkwrite,
fbfa2cc5
JK		 162};
163
354a3399
JK		 164static int get_parent_ino(struct inode *inode, nid_t *pino)
165{
166 struct dentry *dentry;
167
168 inode = igrab(inode);
169 dentry = d_find_any_alias(inode);
170 iput(inode);
171 if (!dentry)
172 return 0;
173
f0947e5c
JK		 174 *pino = parent_ino(dentry);
175 dput(dentry);
354a3399
JK		 176 return 1;
177}
178
a5fd5050 179static inline enum cp_reason_type need_do_checkpoint(struct inode *inode)
9d1589ef 180{
4081363f 181 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
a5fd5050 182 enum cp_reason_type cp_reason = CP_NO_NEEDED;
9d1589ef 183
a5fd5050
CY		 184 if (!S_ISREG(inode->i_mode))
185 cp_reason = CP_NON_REGULAR;
4c8ff709
CY		 186 else if (f2fs_compressed_file(inode))
187 cp_reason = CP_COMPRESSED;
a5fd5050
CY		 188 else if (inode->i_nlink != 1)
189 cp_reason = CP_HARDLINK;
bbf156f7 190 else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
a5fd5050 191 cp_reason = CP_SB_NEED_CP;
9d1589ef 192 else if (file_wrong_pino(inode))
a5fd5050 193 cp_reason = CP_WRONG_PINO;
4d57b86d 194 else if (!f2fs_space_for_roll_forward(sbi))
a5fd5050 195 cp_reason = CP_NO_SPC_ROLL;
4d57b86d 196 else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
a5fd5050 197 cp_reason = CP_NODE_NEED_CP;
d5053a34 198 else if (test_opt(sbi, FASTBOOT))
a5fd5050 199 cp_reason = CP_FASTBOOT_MODE;
63189b78 200 else if (F2FS_OPTION(sbi).active_logs == 2)
a5fd5050 201 cp_reason = CP_SPEC_LOG_NUM;
63189b78 202 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT &&
4d57b86d
CY		 203 f2fs_need_dentry_mark(sbi, inode->i_ino) &&
204 f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino,
205 TRANS_DIR_INO))
0a007b97 206 cp_reason = CP_RECOVER_DIR;
9d1589ef 207
a5fd5050 208 return cp_reason;
9d1589ef
CY		 209}
210
9c7bb702
CL		 211static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
212{
213 struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
214 bool ret = false;
215 /* But we need to avoid that there are some inode updates */
4d57b86d 216 if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino))
9c7bb702
CL		 217 ret = true;
218 f2fs_put_page(i, 0);
219 return ret;
220}
221
51455b19
CL		 222static void try_to_fix_pino(struct inode *inode)
223{
224 struct f2fs_inode_info *fi = F2FS_I(inode);
225 nid_t pino;
226
227 down_write(&fi->i_sem);
51455b19
CL		 228 if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
229 get_parent_ino(inode, &pino)) {
205b9822 230 f2fs_i_pino_write(inode, pino);
51455b19 231 file_got_pino(inode);
51455b19 232 }
ee6d182f 233 up_write(&fi->i_sem);
51455b19
CL		 234}
235
608514de
JK		 236static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
237 int datasync, bool atomic)
fbfa2cc5
JK		 238{
239 struct inode *inode = file->f_mapping->host;
4081363f 240 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2403c155 241 nid_t ino = inode->i_ino;
fbfa2cc5 242 int ret = 0;
a5fd5050 243 enum cp_reason_type cp_reason = 0;
fbfa2cc5 244 struct writeback_control wbc = {
c81bf1c8 245 .sync_mode = WB_SYNC_ALL,
fbfa2cc5
JK		 246 .nr_to_write = LONG_MAX,
247 .for_reclaim = 0,
248 };
50fa53ec 249 unsigned int seq_id = 0;
fbfa2cc5 250
4354994f
DR		 251 if (unlikely(f2fs_readonly(inode->i_sb) ||
252 is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1fa95b0b
NJ		 253 return 0;
254
a2a4a7e4 255 trace_f2fs_sync_file_enter(inode);
ea1aa12c 256
b61ac5b7
YH		 257 if (S_ISDIR(inode->i_mode))
258 goto go_write;
259
ea1aa12c 260 /* if fdatasync is triggered, let's do in-place-update */
c46a155b 261 if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
91942321 262 set_inode_flag(inode, FI_NEED_IPU);
3b49c9a1 263 ret = file_write_and_wait_range(file, start, end);
91942321 264 clear_inode_flag(inode, FI_NEED_IPU);
c1ce1b02 265
a2a4a7e4 266 if (ret) {
a5fd5050 267 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
fbfa2cc5 268 return ret;
a2a4a7e4 269 }
fbfa2cc5 270
9c7bb702 271 /* if the inode is dirty, let's recover all the time */
281518c6 272 if (!f2fs_skip_inode_update(inode, datasync)) {
2286c020 273 f2fs_write_inode(inode, NULL);
9c7bb702
CL		 274 goto go_write;
275 }
276
6d99ba41
JK		 277 /*
278 * if there is no written data, don't waste time to write recovery info.
279 */
91942321 280 if (!is_inode_flag_set(inode, FI_APPEND_WRITE) &&
4d57b86d 281 !f2fs_exist_written_data(sbi, ino, APPEND_INO)) {
19c9c466 282
9c7bb702
CL		 283 /* it may call write_inode just prior to fsync */
284 if (need_inode_page_update(sbi, ino))
19c9c466 285 goto go_write;
19c9c466 286
91942321 287 if (is_inode_flag_set(inode, FI_UPDATE_WRITE) ||
4d57b86d 288 f2fs_exist_written_data(sbi, ino, UPDATE_INO))
6d99ba41
JK		 289 goto flush_out;
290 goto out;
291 }
19c9c466 292go_write:
e5d2385e
JK		 293 /*
294 * Both of fdatasync() and fsync() are able to be recovered from
295 * sudden-power-off.
296 */
91942321 297 down_read(&F2FS_I(inode)->i_sem);
a5fd5050 298 cp_reason = need_do_checkpoint(inode);
91942321 299 up_read(&F2FS_I(inode)->i_sem);
d928bfbf 300
a5fd5050 301 if (cp_reason) {
fbfa2cc5
JK		 302 /* all the dirty node pages should be flushed for POR */
303 ret = f2fs_sync_fs(inode->i_sb, 1);
d928bfbf 304
51455b19
CL		 305 /*
306 * We've secured consistency through sync_fs. Following pino
307 * will be used only for fsynced inodes after checkpoint.
308 */
309 try_to_fix_pino(inode);
91942321
JK		 310 clear_inode_flag(inode, FI_APPEND_WRITE);
311 clear_inode_flag(inode, FI_UPDATE_WRITE);
51455b19
CL		 312 goto out;
313 }
88bd02c9 314sync_nodes:
c29fd0c0 315 atomic_inc(&sbi->wb_sync_req[NODE]);
50fa53ec 316 ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic, &seq_id);
c29fd0c0 317 atomic_dec(&sbi->wb_sync_req[NODE]);
c267ec15
JK		 318 if (ret)
319 goto out;
51455b19 320
871f599f 321 /* if cp_error was enabled, we should avoid infinite loop */
6d5a1495
CY		 322 if (unlikely(f2fs_cp_error(sbi))) {
323 ret = -EIO;
871f599f 324 goto out;
6d5a1495 325 }
871f599f 326
4d57b86d 327 if (f2fs_need_inode_block_update(sbi, ino)) {
7c45729a 328 f2fs_mark_inode_dirty_sync(inode, true);
51455b19
CL		 329 f2fs_write_inode(inode, NULL);
330 goto sync_nodes;
fbfa2cc5 331 }
51455b19 332
b6a245eb
JK		 333 /*
334 * If it's atomic_write, it's just fine to keep write ordering. So
335 * here we don't need to wait for node write completion, since we use
336 * node chain which serializes node blocks. If one of node writes are
337 * reordered, we can see simply broken chain, resulting in stopping
338 * roll-forward recovery. It means we'll recover all or none node blocks
339 * given fsync mark.
340 */
341 if (!atomic) {
50fa53ec 342 ret = f2fs_wait_on_node_pages_writeback(sbi, seq_id);
b6a245eb
JK		 343 if (ret)
344 goto out;
345 }
51455b19
CL		 346
347 /* once recovery info is written, don't need to tack this */
4d57b86d 348 f2fs_remove_ino_entry(sbi, ino, APPEND_INO);
91942321 349 clear_inode_flag(inode, FI_APPEND_WRITE);
51455b19 350flush_out:
d6290814 351 if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER)
39d787be 352 ret = f2fs_issue_flush(sbi, inode->i_ino);
3f06252f 353 if (!ret) {
4d57b86d 354 f2fs_remove_ino_entry(sbi, ino, UPDATE_INO);
3f06252f 355 clear_inode_flag(inode, FI_UPDATE_WRITE);
4d57b86d 356 f2fs_remove_ino_entry(sbi, ino, FLUSH_INO);
3f06252f 357 }
d0239e1b 358 f2fs_update_time(sbi, REQ_TIME);
fbfa2cc5 359out:
a5fd5050 360 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
05ca3632 361 f2fs_trace_ios(NULL, 1);
fbfa2cc5
JK		 362 return ret;
363}
364
608514de
JK		 365int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
366{
1f227a3e
JK		 367 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
368 return -EIO;
608514de
JK		 369 return f2fs_do_sync_file(file, start, end, datasync, false);
370}
371
7f7670fe
JK		 372static pgoff_t __get_first_dirty_index(struct address_space *mapping,
373 pgoff_t pgofs, int whence)
374{
8faab642 375 struct page *page;
7f7670fe
JK		 376 int nr_pages;
377
378 if (whence != SEEK_DATA)
379 return 0;
380
381 /* find first dirty page index */
8faab642
JK		 382 nr_pages = find_get_pages_tag(mapping, &pgofs, PAGECACHE_TAG_DIRTY,
383 1, &page);
384 if (!nr_pages)
385 return ULONG_MAX;
386 pgofs = page->index;
387 put_page(page);
7f7670fe
JK		 388 return pgofs;
389}
390
e1da7872
CY		 391static bool __found_offset(struct f2fs_sb_info *sbi, block_t blkaddr,
392 pgoff_t dirty, pgoff_t pgofs, int whence)
7f7670fe
JK		 393{
394 switch (whence) {
395 case SEEK_DATA:
396 if ((blkaddr == NEW_ADDR && dirty == pgofs) ||
93770ab7 397 __is_valid_data_blkaddr(blkaddr))
7f7670fe
JK		 398 return true;
399 break;
400 case SEEK_HOLE:
401 if (blkaddr == NULL_ADDR)
402 return true;
403 break;
404 }
405 return false;
406}
407
267378d4
CY		 408static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
409{
410 struct inode *inode = file->f_mapping->host;
411 loff_t maxbytes = inode->i_sb->s_maxbytes;
412 struct dnode_of_data dn;
7f7670fe
JK		 413 pgoff_t pgofs, end_offset, dirty;
414 loff_t data_ofs = offset;
415 loff_t isize;
267378d4
CY		 416 int err = 0;
417
5955102c 418 inode_lock(inode);
267378d4
CY		 419
420 isize = i_size_read(inode);
421 if (offset >= isize)
422 goto fail;
423
424 /* handle inline data case */
622f28ae 425 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) {
267378d4
CY		 426 if (whence == SEEK_HOLE)
427 data_ofs = isize;
428 goto found;
429 }
430
09cbfeaf 431 pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
267378d4 432
7f7670fe
JK		 433 dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence);
434
09cbfeaf 435 for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
267378d4 436 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 437 err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
267378d4
CY		 438 if (err && err != -ENOENT) {
439 goto fail;
440 } else if (err == -ENOENT) {
e1c42045 441 /* direct node does not exists */
267378d4 442 if (whence == SEEK_DATA) {
4d57b86d 443 pgofs = f2fs_get_next_page_offset(&dn, pgofs);
267378d4
CY		 444 continue;
445 } else {
446 goto found;
447 }
448 }
449
81ca7350 450 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
267378d4
CY		 451
452 /* find data/hole in dnode block */
453 for (; dn.ofs_in_node < end_offset;
454 dn.ofs_in_node++, pgofs++,
09cbfeaf 455 data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
267378d4 456 block_t blkaddr;
f11e98bd 457
a2ced1ce 458 blkaddr = f2fs_data_blkaddr(&dn);
267378d4 459
c9b60788
CY		 460 if (__is_valid_data_blkaddr(blkaddr) &&
461 !f2fs_is_valid_blkaddr(F2FS_I_SB(inode),
93770ab7 462 blkaddr, DATA_GENERIC_ENHANCE)) {
c9b60788
CY		 463 f2fs_put_dnode(&dn);
464 goto fail;
465 }
466
e1da7872
CY		 467 if (__found_offset(F2FS_I_SB(inode), blkaddr, dirty,
468 pgofs, whence)) {
267378d4
CY		 469 f2fs_put_dnode(&dn);
470 goto found;
471 }
472 }
473 f2fs_put_dnode(&dn);
474 }
475
476 if (whence == SEEK_DATA)
477 goto fail;
267378d4 478found:
fe369bc8
JK		 479 if (whence == SEEK_HOLE && data_ofs > isize)
480 data_ofs = isize;
5955102c 481 inode_unlock(inode);
267378d4
CY		 482 return vfs_setpos(file, data_ofs, maxbytes);
483fail:
5955102c 484 inode_unlock(inode);
267378d4
CY		 485 return -ENXIO;
486}
487
488static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
489{
490 struct inode *inode = file->f_mapping->host;
491 loff_t maxbytes = inode->i_sb->s_maxbytes;
492
493 switch (whence) {
494 case SEEK_SET:
495 case SEEK_CUR:
496 case SEEK_END:
497 return generic_file_llseek_size(file, offset, whence,
498 maxbytes, i_size_read(inode));
499 case SEEK_DATA:
500 case SEEK_HOLE:
0b4c5afd
JK		 501 if (offset < 0)
502 return -ENXIO;
267378d4
CY		 503 return f2fs_seek_block(file, offset, whence);
504 }
505
506 return -EINVAL;
507}
508
fbfa2cc5
JK		 509static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
510{
b3d208f9 511 struct inode *inode = file_inode(file);
b9d777b8 512 int err;
b3d208f9 513
1f227a3e
JK		 514 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
515 return -EIO;
516
4c8ff709
CY		 517 if (!f2fs_is_compress_backend_ready(inode))
518 return -EOPNOTSUPP;
519
b3d208f9 520 /* we don't need to use inline_data strictly */
b9d777b8
JK		 521 err = f2fs_convert_inline_inode(inode);
522 if (err)
523 return err;
b3d208f9 524
fbfa2cc5
JK		 525 file_accessed(file);
526 vma->vm_ops = &f2fs_file_vm_ops;
4c8ff709 527 set_inode_flag(inode, FI_MMAP_FILE);
fbfa2cc5
JK		 528 return 0;
529}
530
fcc85a4d
JK		 531static int f2fs_file_open(struct inode *inode, struct file *filp)
532{
2e168c82 533 int err = fscrypt_file_open(inode, filp);
fcc85a4d 534
95ae251f
EB		 535 if (err)
536 return err;
537
4c8ff709
CY		 538 if (!f2fs_is_compress_backend_ready(inode))
539 return -EOPNOTSUPP;
540
95ae251f 541 err = fsverity_file_open(inode, filp);
2e168c82
EB		 542 if (err)
543 return err;
b91050a8
HL		 544
545 filp->f_mode |= FMODE_NOWAIT;
546
0abd675e 547 return dquot_file_open(inode, filp);
fcc85a4d
JK		 548}
549
4d57b86d 550void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count)
fbfa2cc5 551{
4081363f 552 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
fbfa2cc5 553 struct f2fs_node *raw_node;
19b2c30d 554 int nr_free = 0, ofs = dn->ofs_in_node, len = count;
fbfa2cc5 555 __le32 *addr;
7a2af766 556 int base = 0;
4c8ff709
CY		 557 bool compressed_cluster = false;
558 int cluster_index = 0, valid_blocks = 0;
559 int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
7a2af766
CY		 560
561 if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode))
562 base = get_extra_isize(dn->inode);
fbfa2cc5 563
45590710 564 raw_node = F2FS_NODE(dn->node_page);
7a2af766 565 addr = blkaddr_in_node(raw_node) + base + ofs;
fbfa2cc5 566
4c8ff709
CY		 567 /* Assumption: truncateion starts with cluster */
568 for (; count > 0; count--, addr++, dn->ofs_in_node++, cluster_index++) {
fbfa2cc5 569 block_t blkaddr = le32_to_cpu(*addr);
f11e98bd 570
4c8ff709
CY		 571 if (f2fs_compressed_file(dn->inode) &&
572 !(cluster_index & (cluster_size - 1))) {
573 if (compressed_cluster)
574 f2fs_i_compr_blocks_update(dn->inode,
575 valid_blocks, false);
576 compressed_cluster = (blkaddr == COMPRESS_ADDR);
577 valid_blocks = 0;
578 }
579
fbfa2cc5
JK		 580 if (blkaddr == NULL_ADDR)
581 continue;
582
e1509cf2 583 dn->data_blkaddr = NULL_ADDR;
4d57b86d 584 f2fs_set_data_blkaddr(dn);
c9b60788 585
4c8ff709
CY		 586 if (__is_valid_data_blkaddr(blkaddr)) {
587 if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
93770ab7 588 DATA_GENERIC_ENHANCE))
4c8ff709
CY		 589 continue;
590 if (compressed_cluster)
591 valid_blocks++;
592 }
c9b60788 593
3c6c2beb 594 if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page))
91942321 595 clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN);
4c8ff709
CY		 596
597 f2fs_invalidate_blocks(sbi, blkaddr);
fbfa2cc5
JK		 598 nr_free++;
599 }
19b2c30d 600
4c8ff709
CY		 601 if (compressed_cluster)
602 f2fs_i_compr_blocks_update(dn->inode, valid_blocks, false);
603
fbfa2cc5 604 if (nr_free) {
19b2c30d
CY		 605 pgoff_t fofs;
606 /*
607 * once we invalidate valid blkaddr in range [ofs, ofs + count],
608 * we will invalidate all blkaddr in the whole range.
609 */
4d57b86d 610 fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page),
81ca7350 611 dn->inode) + ofs;
19b2c30d 612 f2fs_update_extent_cache_range(dn, fofs, 0, len);
d7cc950b 613 dec_valid_block_count(sbi, dn->inode, nr_free);
fbfa2cc5
JK		 614 }
615 dn->ofs_in_node = ofs;
51dd6249 616
d0239e1b 617 f2fs_update_time(sbi, REQ_TIME);
51dd6249
NJ		 618 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
619 dn->ofs_in_node, nr_free);
fbfa2cc5
JK		 620}
621
4d57b86d 622void f2fs_truncate_data_blocks(struct dnode_of_data *dn)
fbfa2cc5 623{
d02a6e61 624 f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK(dn->inode));
fbfa2cc5
JK		 625}
626
0bfcfcca 627static int truncate_partial_data_page(struct inode *inode, u64 from,
43f3eae1 628 bool cache_only)
fbfa2cc5 629{
193bea1d 630 loff_t offset = from & (PAGE_SIZE - 1);
09cbfeaf 631 pgoff_t index = from >> PAGE_SHIFT;
43f3eae1 632 struct address_space *mapping = inode->i_mapping;
fbfa2cc5
JK		 633 struct page *page;
634
43f3eae1 635 if (!offset && !cache_only)
b3d208f9 636 return 0;
fbfa2cc5 637
43f3eae1 638 if (cache_only) {
34b5d5c2 639 page = find_lock_page(mapping, index);
43f3eae1
JK		 640 if (page && PageUptodate(page))
641 goto truncate_out;
642 f2fs_put_page(page, 1);
b3d208f9 643 return 0;
43f3eae1 644 }
fbfa2cc5 645
4c8ff709
CY		 646 if (f2fs_compressed_file(inode))
647 return 0;
648
4d57b86d 649 page = f2fs_get_lock_data_page(inode, index, true);
43f3eae1 650 if (IS_ERR(page))
a78aaa2c 651 return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
43f3eae1 652truncate_out:
bae0ee7a 653 f2fs_wait_on_page_writeback(page, DATA, true, true);
09cbfeaf 654 zero_user(page, offset, PAGE_SIZE - offset);
a9bcf9bc
JK		 655
656 /* An encrypted inode should have a key and truncate the last page. */
62230e0d 657 f2fs_bug_on(F2FS_I_SB(inode), cache_only && IS_ENCRYPTED(inode));
a9bcf9bc 658 if (!cache_only)
0bfcfcca 659 set_page_dirty(page);
fbfa2cc5 660 f2fs_put_page(page, 1);
b3d208f9 661 return 0;
fbfa2cc5
JK		 662}
663
4c8ff709 664static int do_truncate_blocks(struct inode *inode, u64 from, bool lock)
fbfa2cc5 665{
4081363f 666 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5
JK		 667 struct dnode_of_data dn;
668 pgoff_t free_from;
9ffe0fb5 669 int count = 0, err = 0;
b3d208f9 670 struct page *ipage;
0bfcfcca 671 bool truncate_page = false;
fbfa2cc5 672
51dd6249
NJ		 673 trace_f2fs_truncate_blocks_enter(inode, from);
674
df033caf 675 free_from = (pgoff_t)F2FS_BLK_ALIGN(from);
fbfa2cc5 676
09210c97
CY		 677 if (free_from >= sbi->max_file_blocks)
678 goto free_partial;
679
764aa3e9 680 if (lock)
c42d28ce 681 f2fs_lock_op(sbi);
9ffe0fb5 682
4d57b86d 683 ipage = f2fs_get_node_page(sbi, inode->i_ino);
b3d208f9
JK		 684 if (IS_ERR(ipage)) {
685 err = PTR_ERR(ipage);
686 goto out;
687 }
688
689 if (f2fs_has_inline_data(inode)) {
4d57b86d 690 f2fs_truncate_inline_inode(inode, ipage, from);
b3d208f9 691 f2fs_put_page(ipage, 1);
0bfcfcca 692 truncate_page = true;
b3d208f9
JK		 693 goto out;
694 }
695
696 set_new_dnode(&dn, inode, ipage, NULL, 0);
4d57b86d 697 err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
fbfa2cc5
JK		 698 if (err) {
699 if (err == -ENOENT)
700 goto free_next;
b3d208f9 701 goto out;
1ce86bf6
JK		 702 }
703
81ca7350 704 count = ADDRS_PER_PAGE(dn.node_page, inode);
fbfa2cc5
JK		 705
706 count -= dn.ofs_in_node;
9850cf4a 707 f2fs_bug_on(sbi, count < 0);
39936837 708
fbfa2cc5 709 if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
4d57b86d 710 f2fs_truncate_data_blocks_range(&dn, count);
fbfa2cc5
JK		 711 free_from += count;
712 }
713
714 f2fs_put_dnode(&dn);
715free_next:
4d57b86d 716 err = f2fs_truncate_inode_blocks(inode, free_from);
764d2c80
JK		 717out:
718 if (lock)
c42d28ce 719 f2fs_unlock_op(sbi);
09210c97 720free_partial:
b3d208f9
JK		 721 /* lastly zero out the first data page */
722 if (!err)
0bfcfcca 723 err = truncate_partial_data_page(inode, from, truncate_page);
fbfa2cc5 724
51dd6249 725 trace_f2fs_truncate_blocks_exit(inode, err);
fbfa2cc5
JK		 726 return err;
727}
728
4c8ff709
CY		 729int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock)
730{
731 u64 free_from = from;
732
733 /*
734 * for compressed file, only support cluster size
735 * aligned truncation.
736 */
737 if (f2fs_compressed_file(inode)) {
738 size_t cluster_shift = PAGE_SHIFT +
739 F2FS_I(inode)->i_log_cluster_size;
740 size_t cluster_mask = (1 << cluster_shift) - 1;
741
742 free_from = from >> cluster_shift;
743 if (from & cluster_mask)
744 free_from++;
745 free_from <<= cluster_shift;
746 }
747
748 return do_truncate_blocks(inode, free_from, lock);
749}
750
9a449e9c 751int f2fs_truncate(struct inode *inode)
fbfa2cc5 752{
b0154891
CY		 753 int err;
754
1f227a3e
JK		 755 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
756 return -EIO;
757
fbfa2cc5
JK		 758 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
759 S_ISLNK(inode->i_mode)))
b0154891 760 return 0;
fbfa2cc5 761
51dd6249
NJ		 762 trace_f2fs_truncate(inode);
763
14b44d23 764 if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) {
c45d6002 765 f2fs_show_injection_info(F2FS_I_SB(inode), FAULT_TRUNCATE);
14b44d23
JK		 766 return -EIO;
767 }
7fa750a1 768
92dffd01 769 /* we should check inline_data size */
b9d777b8 770 if (!f2fs_may_inline_data(inode)) {
b0154891
CY		 771 err = f2fs_convert_inline_inode(inode);
772 if (err)
773 return err;
92dffd01
JK		 774 }
775
c42d28ce 776 err = f2fs_truncate_blocks(inode, i_size_read(inode), true);
b0154891
CY		 777 if (err)
778 return err;
779
078cd827 780 inode->i_mtime = inode->i_ctime = current_time(inode);
7c45729a 781 f2fs_mark_inode_dirty_sync(inode, false);
b0154891 782 return 0;
fbfa2cc5
JK		 783}
784
a528d35e 785int f2fs_getattr(const struct path *path, struct kstat *stat,
1c6d8ee4 786 u32 request_mask, unsigned int query_flags)
fbfa2cc5 787{
a528d35e 788 struct inode *inode = d_inode(path->dentry);
1c6d8ee4 789 struct f2fs_inode_info *fi = F2FS_I(inode);
1c1d35df 790 struct f2fs_inode *ri;
1c6d8ee4
CY		 791 unsigned int flags;
792
1c1d35df 793 if (f2fs_has_extra_attr(inode) &&
7beb01f7 794 f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
1c1d35df
CY		 795 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
796 stat->result_mask |= STATX_BTIME;
797 stat->btime.tv_sec = fi->i_crtime.tv_sec;
798 stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
799 }
800
36098557 801 flags = fi->i_flags;
fd26725f
CY		 802 if (flags & F2FS_COMPR_FL)
803 stat->attributes |= STATX_ATTR_COMPRESSED;
59c84408 804 if (flags & F2FS_APPEND_FL)
1c6d8ee4 805 stat->attributes |= STATX_ATTR_APPEND;
62230e0d 806 if (IS_ENCRYPTED(inode))
1c6d8ee4 807 stat->attributes |= STATX_ATTR_ENCRYPTED;
59c84408 808 if (flags & F2FS_IMMUTABLE_FL)
1c6d8ee4 809 stat->attributes |= STATX_ATTR_IMMUTABLE;
59c84408 810 if (flags & F2FS_NODUMP_FL)
1c6d8ee4 811 stat->attributes |= STATX_ATTR_NODUMP;
924e3194
EB		 812 if (IS_VERITY(inode))
813 stat->attributes |= STATX_ATTR_VERITY;
1c6d8ee4 814
fd26725f
CY		 815 stat->attributes_mask |= (STATX_ATTR_COMPRESSED |
816 STATX_ATTR_APPEND |
1c6d8ee4
CY		 817 STATX_ATTR_ENCRYPTED |
818 STATX_ATTR_IMMUTABLE |
924e3194
EB		 819 STATX_ATTR_NODUMP |
820 STATX_ATTR_VERITY);
1c6d8ee4 821
fbfa2cc5 822 generic_fillattr(inode, stat);
5b4267d1
JK		 823
824 /* we need to show initial sectors used for inline_data/dentries */
825 if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) ||
826 f2fs_has_inline_dentry(inode))
827 stat->blocks += (stat->size + 511) >> 9;
828
fbfa2cc5
JK		 829 return 0;
830}
831
832#ifdef CONFIG_F2FS_FS_POSIX_ACL
833static void __setattr_copy(struct inode *inode, const struct iattr *attr)
834{
fbfa2cc5
JK		 835 unsigned int ia_valid = attr->ia_valid;
836
837 if (ia_valid & ATTR_UID)
838 inode->i_uid = attr->ia_uid;
839 if (ia_valid & ATTR_GID)
840 inode->i_gid = attr->ia_gid;
eb31e2f6
AG		 841 if (ia_valid & ATTR_ATIME)
842 inode->i_atime = attr->ia_atime;
843 if (ia_valid & ATTR_MTIME)
844 inode->i_mtime = attr->ia_mtime;
845 if (ia_valid & ATTR_CTIME)
846 inode->i_ctime = attr->ia_ctime;
fbfa2cc5
JK		 847 if (ia_valid & ATTR_MODE) {
848 umode_t mode = attr->ia_mode;
849
850 if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
851 mode &= ~S_ISGID;
91942321 852 set_acl_inode(inode, mode);
fbfa2cc5
JK		 853 }
854}
855#else
856#define __setattr_copy setattr_copy
857#endif
858
859int f2fs_setattr(struct dentry *dentry, struct iattr *attr)
860{
2b0143b5 861 struct inode *inode = d_inode(dentry);
fbfa2cc5
JK		 862 int err;
863
1f227a3e
JK		 864 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
865 return -EIO;
866
4c8ff709
CY		 867 if ((attr->ia_valid & ATTR_SIZE) &&
868 !f2fs_is_compress_backend_ready(inode))
869 return -EOPNOTSUPP;
870
31051c85 871 err = setattr_prepare(dentry, attr);
fbfa2cc5
JK		 872 if (err)
873 return err;
874
20bb2479
EB		 875 err = fscrypt_prepare_setattr(dentry, attr);
876 if (err)
877 return err;
878
95ae251f
EB		 879 err = fsverity_prepare_setattr(dentry, attr);
880 if (err)
881 return err;
882
0abd675e
CY		 883 if (is_quota_modification(inode, attr)) {
884 err = dquot_initialize(inode);
885 if (err)
886 return err;
887 }
888 if ((attr->ia_valid & ATTR_UID &&
889 !uid_eq(attr->ia_uid, inode->i_uid)) ||
890 (attr->ia_valid & ATTR_GID &&
891 !gid_eq(attr->ia_gid, inode->i_gid))) {
af033b2a 892 f2fs_lock_op(F2FS_I_SB(inode));
0abd675e 893 err = dquot_transfer(inode, attr);
af033b2a
CY		 894 if (err) {
895 set_sbi_flag(F2FS_I_SB(inode),
896 SBI_QUOTA_NEED_REPAIR);
897 f2fs_unlock_op(F2FS_I_SB(inode));
0abd675e 898 return err;
af033b2a
CY		 899 }
900 /*
901 * update uid/gid under lock_op(), so that dquot and inode can
902 * be updated atomically.
903 */
904 if (attr->ia_valid & ATTR_UID)
905 inode->i_uid = attr->ia_uid;
906 if (attr->ia_valid & ATTR_GID)
907 inode->i_gid = attr->ia_gid;
908 f2fs_mark_inode_dirty_sync(inode, true);
909 f2fs_unlock_op(F2FS_I_SB(inode));
0abd675e
CY		 910 }
911
09db6a2e 912 if (attr->ia_valid & ATTR_SIZE) {
cfb9a34d
JK		 913 loff_t old_size = i_size_read(inode);
914
915 if (attr->ia_size > MAX_INLINE_DATA(inode)) {
916 /*
917 * should convert inline inode before i_size_write to
918 * keep smaller than inline_data size with inline flag.
919 */
920 err = f2fs_convert_inline_inode(inode);
921 if (err)
922 return err;
923 }
a33c1502 924
a33c1502 925 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
6f8d4455 926 down_write(&F2FS_I(inode)->i_mmap_sem);
a33c1502
CY		 927
928 truncate_setsize(inode, attr->ia_size);
929
cfb9a34d 930 if (attr->ia_size <= old_size)
9a449e9c 931 err = f2fs_truncate(inode);
a33c1502
CY		 932 /*
933 * do not trim all blocks after i_size if target size is
934 * larger than i_size.
935 */
a33c1502 936 up_write(&F2FS_I(inode)->i_mmap_sem);
6f8d4455 937 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
a33c1502
CY		 938 if (err)
939 return err;
0cab80ee 940
c10c9820 941 spin_lock(&F2FS_I(inode)->i_size_lock);
cfb9a34d 942 inode->i_mtime = inode->i_ctime = current_time(inode);
a0d00fad 943 F2FS_I(inode)->last_disk_size = i_size_read(inode);
c10c9820 944 spin_unlock(&F2FS_I(inode)->i_size_lock);
fbfa2cc5
JK		 945 }
946
947 __setattr_copy(inode, attr);
948
949 if (attr->ia_valid & ATTR_MODE) {
4d57b86d 950 err = posix_acl_chmod(inode, f2fs_get_inode_mode(inode));
91942321
JK		 951 if (err || is_inode_flag_set(inode, FI_ACL_MODE)) {
952 inode->i_mode = F2FS_I(inode)->i_acl_mode;
953 clear_inode_flag(inode, FI_ACL_MODE);
fbfa2cc5
JK		 954 }
955 }
956
c0ed4405 957 /* file size may changed here */
ca597bdd 958 f2fs_mark_inode_dirty_sync(inode, true);
15d04354
JK		 959
960 /* inode change will produce dirty node pages flushed by checkpoint */
961 f2fs_balance_fs(F2FS_I_SB(inode), true);
962
fbfa2cc5
JK		 963 return err;
964}
965
966const struct inode_operations f2fs_file_inode_operations = {
967 .getattr = f2fs_getattr,
968 .setattr = f2fs_setattr,
969 .get_acl = f2fs_get_acl,
a6dda0e6 970 .set_acl = f2fs_set_acl,
fbfa2cc5 971#ifdef CONFIG_F2FS_FS_XATTR
fbfa2cc5 972 .listxattr = f2fs_listxattr,
fbfa2cc5 973#endif
9ab70134 974 .fiemap = f2fs_fiemap,
fbfa2cc5
JK		 975};
976
6394328a 977static int fill_zero(struct inode *inode, pgoff_t index,
fbfa2cc5
JK		 978 loff_t start, loff_t len)
979{
4081363f 980 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5
JK		 981 struct page *page;
982
983 if (!len)
6394328a 984 return 0;
fbfa2cc5 985
2c4db1a6 986 f2fs_balance_fs(sbi, true);
bd43df02 987
e479556b 988 f2fs_lock_op(sbi);
4d57b86d 989 page = f2fs_get_new_data_page(inode, NULL, index, false);
e479556b 990 f2fs_unlock_op(sbi);
fbfa2cc5 991
6394328a
CY		 992 if (IS_ERR(page))
993 return PTR_ERR(page);
994
bae0ee7a 995 f2fs_wait_on_page_writeback(page, DATA, true, true);
6394328a
CY		 996 zero_user(page, start, len);
997 set_page_dirty(page);
998 f2fs_put_page(page, 1);
999 return 0;
fbfa2cc5
JK		 1000}
1001
4d57b86d 1002int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
fbfa2cc5 1003{
fbfa2cc5
JK		 1004 int err;
1005
ea58711e 1006 while (pg_start < pg_end) {
fbfa2cc5 1007 struct dnode_of_data dn;
ea58711e 1008 pgoff_t end_offset, count;
9eaeba70 1009
fbfa2cc5 1010 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1011 err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
fbfa2cc5 1012 if (err) {
ea58711e 1013 if (err == -ENOENT) {
4d57b86d
CY		 1014 pg_start = f2fs_get_next_page_offset(&dn,
1015 pg_start);
fbfa2cc5 1016 continue;
ea58711e 1017 }
fbfa2cc5
JK		 1018 return err;
1019 }
1020
81ca7350 1021 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
ea58711e
CY		 1022 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
1023
1024 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
1025
4d57b86d 1026 f2fs_truncate_data_blocks_range(&dn, count);
fbfa2cc5 1027 f2fs_put_dnode(&dn);
ea58711e
CY		 1028
1029 pg_start += count;
fbfa2cc5
JK		 1030 }
1031 return 0;
1032}
1033
a66c7b2f 1034static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
fbfa2cc5
JK		 1035{
1036 pgoff_t pg_start, pg_end;
1037 loff_t off_start, off_end;
b9d777b8 1038 int ret;
fbfa2cc5 1039
b9d777b8
JK		 1040 ret = f2fs_convert_inline_inode(inode);
1041 if (ret)
1042 return ret;
9ffe0fb5 1043
09cbfeaf
KS		 1044 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1045 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
fbfa2cc5 1046
09cbfeaf
KS		 1047 off_start = offset & (PAGE_SIZE - 1);
1048 off_end = (offset + len) & (PAGE_SIZE - 1);
fbfa2cc5
JK		 1049
1050 if (pg_start == pg_end) {
6394328a 1051 ret = fill_zero(inode, pg_start, off_start,
fbfa2cc5 1052 off_end - off_start);
6394328a
CY		 1053 if (ret)
1054 return ret;
fbfa2cc5 1055 } else {
6394328a
CY		 1056 if (off_start) {
1057 ret = fill_zero(inode, pg_start++, off_start,
09cbfeaf 1058 PAGE_SIZE - off_start);
6394328a
CY		 1059 if (ret)
1060 return ret;
1061 }
1062 if (off_end) {
1063 ret = fill_zero(inode, pg_end, 0, off_end);
1064 if (ret)
1065 return ret;
1066 }
fbfa2cc5
JK		 1067
1068 if (pg_start < pg_end) {
1069 struct address_space *mapping = inode->i_mapping;
1070 loff_t blk_start, blk_end;
4081363f 1071 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1127a3d4 1072
2c4db1a6 1073 f2fs_balance_fs(sbi, true);
fbfa2cc5 1074
09cbfeaf
KS		 1075 blk_start = (loff_t)pg_start << PAGE_SHIFT;
1076 blk_end = (loff_t)pg_end << PAGE_SHIFT;
a33c1502 1077
a33c1502 1078 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
6f8d4455 1079 down_write(&F2FS_I(inode)->i_mmap_sem);
a33c1502 1080
fbfa2cc5
JK		 1081 truncate_inode_pages_range(mapping, blk_start,
1082 blk_end - 1);
39936837 1083
e479556b 1084 f2fs_lock_op(sbi);
4d57b86d 1085 ret = f2fs_truncate_hole(inode, pg_start, pg_end);
e479556b 1086 f2fs_unlock_op(sbi);
a33c1502 1087
5a3a2d83 1088 up_write(&F2FS_I(inode)->i_mmap_sem);
6f8d4455 1089 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
fbfa2cc5
JK		 1090 }
1091 }
1092
fbfa2cc5
JK		 1093 return ret;
1094}
1095
0a2aa8fb
JK		 1096static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr,
1097 int *do_replace, pgoff_t off, pgoff_t len)
b4ace337
CY		 1098{
1099 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1100 struct dnode_of_data dn;
0a2aa8fb 1101 int ret, done, i;
ecbaa406 1102
0a2aa8fb 1103next_dnode:
6e2c64ad 1104 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1105 ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA);
6e2c64ad
JK		 1106 if (ret && ret != -ENOENT) {
1107 return ret;
1108 } else if (ret == -ENOENT) {
0a2aa8fb
JK		 1109 if (dn.max_level == 0)
1110 return -ENOENT;
4c8ff709
CY		 1111 done = min((pgoff_t)ADDRS_PER_BLOCK(inode) -
1112 dn.ofs_in_node, len);
0a2aa8fb
JK		 1113 blkaddr += done;
1114 do_replace += done;
1115 goto next;
1116 }
1117
1118 done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) -
1119 dn.ofs_in_node, len);
1120 for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) {
a2ced1ce 1121 *blkaddr = f2fs_data_blkaddr(&dn);
93770ab7
CY		 1122
1123 if (__is_valid_data_blkaddr(*blkaddr) &&
1124 !f2fs_is_valid_blkaddr(sbi, *blkaddr,
1125 DATA_GENERIC_ENHANCE)) {
1126 f2fs_put_dnode(&dn);
10f966bb 1127 return -EFSCORRUPTED;
93770ab7
CY		 1128 }
1129
4d57b86d 1130 if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) {
0a2aa8fb 1131
b0332a0f 1132 if (f2fs_lfs_mode(sbi)) {
0a2aa8fb 1133 f2fs_put_dnode(&dn);
fd114ab2 1134 return -EOPNOTSUPP;
0a2aa8fb
JK		 1135 }
1136
6e2c64ad 1137 /* do not invalidate this block address */
f28b3434 1138 f2fs_update_data_blkaddr(&dn, NULL_ADDR);
0a2aa8fb 1139 *do_replace = 1;
b4ace337 1140 }
6e2c64ad 1141 }
0a2aa8fb
JK		 1142 f2fs_put_dnode(&dn);
1143next:
1144 len -= done;
1145 off += done;
1146 if (len)
1147 goto next_dnode;
1148 return 0;
1149}
b4ace337 1150
0a2aa8fb
JK		 1151static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr,
1152 int *do_replace, pgoff_t off, int len)
1153{
1154 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1155 struct dnode_of_data dn;
1156 int ret, i;
b4ace337 1157
0a2aa8fb
JK		 1158 for (i = 0; i < len; i++, do_replace++, blkaddr++) {
1159 if (*do_replace == 0)
1160 continue;
b4ace337 1161
0a2aa8fb 1162 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1163 ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA);
0a2aa8fb
JK		 1164 if (ret) {
1165 dec_valid_block_count(sbi, inode, 1);
4d57b86d 1166 f2fs_invalidate_blocks(sbi, *blkaddr);
0a2aa8fb
JK		 1167 } else {
1168 f2fs_update_data_blkaddr(&dn, *blkaddr);
36abef4e 1169 }
0a2aa8fb
JK		 1170 f2fs_put_dnode(&dn);
1171 }
1172 return 0;
1173}
1174
1175static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode,
1176 block_t *blkaddr, int *do_replace,
1177 pgoff_t src, pgoff_t dst, pgoff_t len, bool full)
1178{
1179 struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode);
1180 pgoff_t i = 0;
1181 int ret;
36abef4e 1182
0a2aa8fb
JK		 1183 while (i < len) {
1184 if (blkaddr[i] == NULL_ADDR && !full) {
1185 i++;
1186 continue;
6e2c64ad 1187 }
b4ace337 1188
0a2aa8fb
JK		 1189 if (do_replace[i] || blkaddr[i] == NULL_ADDR) {
1190 struct dnode_of_data dn;
1191 struct node_info ni;
1192 size_t new_size;
1193 pgoff_t ilen;
b4ace337 1194
0a2aa8fb 1195 set_new_dnode(&dn, dst_inode, NULL, NULL, 0);
4d57b86d 1196 ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE);
0a2aa8fb
JK		 1197 if (ret)
1198 return ret;
b4ace337 1199
7735730d
CY		 1200 ret = f2fs_get_node_info(sbi, dn.nid, &ni);
1201 if (ret) {
1202 f2fs_put_dnode(&dn);
1203 return ret;
1204 }
1205
0a2aa8fb
JK		 1206 ilen = min((pgoff_t)
1207 ADDRS_PER_PAGE(dn.node_page, dst_inode) -
1208 dn.ofs_in_node, len - i);
1209 do {
a2ced1ce 1210 dn.data_blkaddr = f2fs_data_blkaddr(&dn);
4d57b86d 1211 f2fs_truncate_data_blocks_range(&dn, 1);
0a2aa8fb
JK		 1212
1213 if (do_replace[i]) {
1214 f2fs_i_blocks_write(src_inode,
0abd675e 1215 1, false, false);
0a2aa8fb 1216 f2fs_i_blocks_write(dst_inode,
0abd675e 1217 1, true, false);
0a2aa8fb
JK		 1218 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
1219 blkaddr[i], ni.version, true, false);
1220
1221 do_replace[i] = 0;
1222 }
1223 dn.ofs_in_node++;
1224 i++;
1f0d5c91 1225 new_size = (loff_t)(dst + i) << PAGE_SHIFT;
0a2aa8fb
JK		 1226 if (dst_inode->i_size < new_size)
1227 f2fs_i_size_write(dst_inode, new_size);
e87f7329 1228 } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR));
6e2c64ad 1229
0a2aa8fb
JK		 1230 f2fs_put_dnode(&dn);
1231 } else {
1232 struct page *psrc, *pdst;
1233
4d57b86d
CY		 1234 psrc = f2fs_get_lock_data_page(src_inode,
1235 src + i, true);
0a2aa8fb
JK		 1236 if (IS_ERR(psrc))
1237 return PTR_ERR(psrc);
4d57b86d 1238 pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i,
0a2aa8fb
JK		 1239 true);
1240 if (IS_ERR(pdst)) {
1241 f2fs_put_page(psrc, 1);
1242 return PTR_ERR(pdst);
1243 }
1244 f2fs_copy_page(psrc, pdst);
1245 set_page_dirty(pdst);
1246 f2fs_put_page(pdst, 1);
6e2c64ad 1247 f2fs_put_page(psrc, 1);
b4ace337 1248
4d57b86d
CY		 1249 ret = f2fs_truncate_hole(src_inode,
1250 src + i, src + i + 1);
0a2aa8fb
JK		 1251 if (ret)
1252 return ret;
1253 i++;
1254 }
6e2c64ad
JK		 1255 }
1256 return 0;
0a2aa8fb 1257}
b4ace337 1258
0a2aa8fb
JK		 1259static int __exchange_data_block(struct inode *src_inode,
1260 struct inode *dst_inode, pgoff_t src, pgoff_t dst,
363cad7f 1261 pgoff_t len, bool full)
0a2aa8fb
JK		 1262{
1263 block_t *src_blkaddr;
1264 int *do_replace;
363cad7f 1265 pgoff_t olen;
0a2aa8fb
JK		 1266 int ret;
1267
363cad7f 1268 while (len) {
d02a6e61 1269 olen = min((pgoff_t)4 * ADDRS_PER_BLOCK(src_inode), len);
0a2aa8fb 1270
628b3d14 1271 src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode),
9d2a789c 1272 array_size(olen, sizeof(block_t)),
4f4460c0 1273 GFP_NOFS);
363cad7f
JK		 1274 if (!src_blkaddr)
1275 return -ENOMEM;
0a2aa8fb 1276
628b3d14 1277 do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode),
9d2a789c 1278 array_size(olen, sizeof(int)),
4f4460c0 1279 GFP_NOFS);
363cad7f
JK		 1280 if (!do_replace) {
1281 kvfree(src_blkaddr);
1282 return -ENOMEM;
1283 }
0a2aa8fb 1284
363cad7f
JK		 1285 ret = __read_out_blkaddrs(src_inode, src_blkaddr,
1286 do_replace, src, olen);
1287 if (ret)
1288 goto roll_back;
0a2aa8fb 1289
363cad7f
JK		 1290 ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr,
1291 do_replace, src, dst, olen, full);
1292 if (ret)
1293 goto roll_back;
1294
1295 src += olen;
1296 dst += olen;
1297 len -= olen;
1298
1299 kvfree(src_blkaddr);
1300 kvfree(do_replace);
1301 }
0a2aa8fb
JK		 1302 return 0;
1303
1304roll_back:
9fd62605 1305 __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen);
0a2aa8fb
JK		 1306 kvfree(src_blkaddr);
1307 kvfree(do_replace);
6e2c64ad
JK		 1308 return ret;
1309}
b4ace337 1310
6f8d4455 1311static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len)
6e2c64ad
JK		 1312{
1313 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
f91108b8 1314 pgoff_t nrpages = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
6f8d4455
JK		 1315 pgoff_t start = offset >> PAGE_SHIFT;
1316 pgoff_t end = (offset + len) >> PAGE_SHIFT;
0a2aa8fb 1317 int ret;
6e2c64ad 1318
0a2aa8fb 1319 f2fs_balance_fs(sbi, true);
5f281fab 1320
6f8d4455
JK		 1321 /* avoid gc operation during block exchange */
1322 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1323 down_write(&F2FS_I(inode)->i_mmap_sem);
5f281fab 1324
6f8d4455
JK		 1325 f2fs_lock_op(sbi);
1326 f2fs_drop_extent_tree(inode);
1327 truncate_pagecache(inode, offset);
0a2aa8fb
JK		 1328 ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
1329 f2fs_unlock_op(sbi);
6f8d4455
JK		 1330
1331 up_write(&F2FS_I(inode)->i_mmap_sem);
1332 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
b4ace337
CY		 1333 return ret;
1334}
1335
1336static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
1337{
b4ace337
CY		 1338 loff_t new_size;
1339 int ret;
1340
b4ace337
CY		 1341 if (offset + len >= i_size_read(inode))
1342 return -EINVAL;
1343
1344 /* collapse range should be aligned to block size of f2fs. */
1345 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1346 return -EINVAL;
1347
b9d777b8
JK		 1348 ret = f2fs_convert_inline_inode(inode);
1349 if (ret)
1350 return ret;
97a7b2c2 1351
b4ace337
CY		 1352 /* write out all dirty pages from offset */
1353 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1354 if (ret)
6f8d4455 1355 return ret;
b4ace337 1356
6f8d4455 1357 ret = f2fs_do_collapse(inode, offset, len);
b4ace337 1358 if (ret)
6f8d4455 1359 return ret;
b4ace337 1360
6e2c64ad 1361 /* write out all moved pages, if possible */
6f8d4455 1362 down_write(&F2FS_I(inode)->i_mmap_sem);
6e2c64ad
JK		 1363 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1364 truncate_pagecache(inode, offset);
1365
b4ace337 1366 new_size = i_size_read(inode) - len;
6e2c64ad 1367 truncate_pagecache(inode, new_size);
b4ace337 1368
c42d28ce 1369 ret = f2fs_truncate_blocks(inode, new_size, true);
6f8d4455 1370 up_write(&F2FS_I(inode)->i_mmap_sem);
b4ace337 1371 if (!ret)
fc9581c8 1372 f2fs_i_size_write(inode, new_size);
b4ace337
CY		 1373 return ret;
1374}
1375
6e961949
CY		 1376static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start,
1377 pgoff_t end)
1378{
1379 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1380 pgoff_t index = start;
1381 unsigned int ofs_in_node = dn->ofs_in_node;
1382 blkcnt_t count = 0;
1383 int ret;
1384
1385 for (; index < end; index++, dn->ofs_in_node++) {
a2ced1ce 1386 if (f2fs_data_blkaddr(dn) == NULL_ADDR)
6e961949
CY		 1387 count++;
1388 }
1389
1390 dn->ofs_in_node = ofs_in_node;
4d57b86d 1391 ret = f2fs_reserve_new_blocks(dn, count);
6e961949
CY		 1392 if (ret)
1393 return ret;
1394
1395 dn->ofs_in_node = ofs_in_node;
1396 for (index = start; index < end; index++, dn->ofs_in_node++) {
a2ced1ce 1397 dn->data_blkaddr = f2fs_data_blkaddr(dn);
6e961949 1398 /*
4d57b86d 1399 * f2fs_reserve_new_blocks will not guarantee entire block
6e961949
CY		 1400 * allocation.
1401 */
1402 if (dn->data_blkaddr == NULL_ADDR) {
1403 ret = -ENOSPC;
1404 break;
1405 }
1406 if (dn->data_blkaddr != NEW_ADDR) {
4d57b86d 1407 f2fs_invalidate_blocks(sbi, dn->data_blkaddr);
6e961949 1408 dn->data_blkaddr = NEW_ADDR;
4d57b86d 1409 f2fs_set_data_blkaddr(dn);
6e961949
CY		 1410 }
1411 }
1412
1413 f2fs_update_extent_cache_range(dn, start, 0, index - start);
1414
1415 return ret;
1416}
1417
75cd4e09
CY		 1418static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
1419 int mode)
1420{
1421 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1422 struct address_space *mapping = inode->i_mapping;
1423 pgoff_t index, pg_start, pg_end;
1424 loff_t new_size = i_size_read(inode);
1425 loff_t off_start, off_end;
1426 int ret = 0;
1427
75cd4e09
CY		 1428 ret = inode_newsize_ok(inode, (len + offset));
1429 if (ret)
1430 return ret;
1431
b9d777b8
JK		 1432 ret = f2fs_convert_inline_inode(inode);
1433 if (ret)
1434 return ret;
75cd4e09
CY		 1435
1436 ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
1437 if (ret)
6f8d4455 1438 return ret;
75cd4e09 1439
09cbfeaf
KS		 1440 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1441 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
75cd4e09 1442
09cbfeaf
KS		 1443 off_start = offset & (PAGE_SIZE - 1);
1444 off_end = (offset + len) & (PAGE_SIZE - 1);
75cd4e09
CY		 1445
1446 if (pg_start == pg_end) {
6394328a
CY		 1447 ret = fill_zero(inode, pg_start, off_start,
1448 off_end - off_start);
1449 if (ret)
6f8d4455 1450 return ret;
6394328a 1451
75cd4e09
CY		 1452 new_size = max_t(loff_t, new_size, offset + len);
1453 } else {
1454 if (off_start) {
6394328a 1455 ret = fill_zero(inode, pg_start++, off_start,
09cbfeaf 1456 PAGE_SIZE - off_start);
6394328a 1457 if (ret)
6f8d4455 1458 return ret;
6394328a 1459
75cd4e09 1460 new_size = max_t(loff_t, new_size,
09cbfeaf 1461 (loff_t)pg_start << PAGE_SHIFT);
75cd4e09
CY		 1462 }
1463
6e961949 1464 for (index = pg_start; index < pg_end;) {
75cd4e09 1465 struct dnode_of_data dn;
6e961949
CY		 1466 unsigned int end_offset;
1467 pgoff_t end;
75cd4e09 1468
c7079853 1469 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
6f8d4455 1470 down_write(&F2FS_I(inode)->i_mmap_sem);
c7079853
CY		 1471
1472 truncate_pagecache_range(inode,
1473 (loff_t)index << PAGE_SHIFT,
1474 ((loff_t)pg_end << PAGE_SHIFT) - 1);
1475
75cd4e09
CY		 1476 f2fs_lock_op(sbi);
1477
6e961949 1478 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1479 ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE);
75cd4e09
CY		 1480 if (ret) {
1481 f2fs_unlock_op(sbi);
6f8d4455 1482 up_write(&F2FS_I(inode)->i_mmap_sem);
c7079853 1483 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
75cd4e09
CY		 1484 goto out;
1485 }
1486
6e961949
CY		 1487 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1488 end = min(pg_end, end_offset - dn.ofs_in_node + index);
1489
1490 ret = f2fs_do_zero_range(&dn, index, end);
75cd4e09 1491 f2fs_put_dnode(&dn);
c7079853 1492
75cd4e09 1493 f2fs_unlock_op(sbi);
6f8d4455 1494 up_write(&F2FS_I(inode)->i_mmap_sem);
c7079853 1495 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
9434fcde
CY		 1496
1497 f2fs_balance_fs(sbi, dn.node_changed);
1498
6e961949
CY		 1499 if (ret)
1500 goto out;
75cd4e09 1501
6e961949 1502 index = end;
75cd4e09 1503 new_size = max_t(loff_t, new_size,
6e961949 1504 (loff_t)index << PAGE_SHIFT);
75cd4e09
CY		 1505 }
1506
1507 if (off_end) {
6394328a
CY		 1508 ret = fill_zero(inode, pg_end, 0, off_end);
1509 if (ret)
1510 goto out;
1511
75cd4e09
CY		 1512 new_size = max_t(loff_t, new_size, offset + len);
1513 }
1514 }
1515
1516out:
17cd07ae
CY		 1517 if (new_size > i_size_read(inode)) {
1518 if (mode & FALLOC_FL_KEEP_SIZE)
1519 file_set_keep_isize(inode);
1520 else
1521 f2fs_i_size_write(inode, new_size);
1522 }
75cd4e09
CY		 1523 return ret;
1524}
1525
f62185d0
CY		 1526static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
1527{
1528 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
0a2aa8fb 1529 pgoff_t nr, pg_start, pg_end, delta, idx;
f62185d0 1530 loff_t new_size;
6e2c64ad 1531 int ret = 0;
f62185d0 1532
f62185d0 1533 new_size = i_size_read(inode) + len;
46e82fb1
KM		 1534 ret = inode_newsize_ok(inode, new_size);
1535 if (ret)
1536 return ret;
f62185d0
CY		 1537
1538 if (offset >= i_size_read(inode))
1539 return -EINVAL;
1540
1541 /* insert range should be aligned to block size of f2fs. */
1542 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1543 return -EINVAL;
1544
b9d777b8
JK		 1545 ret = f2fs_convert_inline_inode(inode);
1546 if (ret)
1547 return ret;
97a7b2c2 1548
2c4db1a6 1549 f2fs_balance_fs(sbi, true);
2a340760 1550
5a3a2d83 1551 down_write(&F2FS_I(inode)->i_mmap_sem);
c42d28ce 1552 ret = f2fs_truncate_blocks(inode, i_size_read(inode), true);
6f8d4455 1553 up_write(&F2FS_I(inode)->i_mmap_sem);
f62185d0 1554 if (ret)
6f8d4455 1555 return ret;
f62185d0
CY		 1556
1557 /* write out all dirty pages from offset */
1558 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1559 if (ret)
6f8d4455 1560 return ret;
f62185d0 1561
09cbfeaf
KS		 1562 pg_start = offset >> PAGE_SHIFT;
1563 pg_end = (offset + len) >> PAGE_SHIFT;
f62185d0 1564 delta = pg_end - pg_start;
f91108b8 1565 idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
0a2aa8fb 1566
6f8d4455
JK		 1567 /* avoid gc operation during block exchange */
1568 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1569 down_write(&F2FS_I(inode)->i_mmap_sem);
1570 truncate_pagecache(inode, offset);
1571
0a2aa8fb
JK		 1572 while (!ret && idx > pg_start) {
1573 nr = idx - pg_start;
1574 if (nr > delta)
1575 nr = delta;
1576 idx -= nr;
f62185d0 1577
f62185d0 1578 f2fs_lock_op(sbi);
5f281fab
JK		 1579 f2fs_drop_extent_tree(inode);
1580
0a2aa8fb
JK		 1581 ret = __exchange_data_block(inode, inode, idx,
1582 idx + delta, nr, false);
f62185d0
CY		 1583 f2fs_unlock_op(sbi);
1584 }
6f8d4455
JK		 1585 up_write(&F2FS_I(inode)->i_mmap_sem);
1586 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
f62185d0 1587
6e2c64ad 1588 /* write out all moved pages, if possible */
6f8d4455 1589 down_write(&F2FS_I(inode)->i_mmap_sem);
6e2c64ad
JK		 1590 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1591 truncate_pagecache(inode, offset);
6f8d4455 1592 up_write(&F2FS_I(inode)->i_mmap_sem);
6e2c64ad
JK		 1593
1594 if (!ret)
fc9581c8 1595 f2fs_i_size_write(inode, new_size);
f62185d0
CY		 1596 return ret;
1597}
1598
fbfa2cc5
JK		 1599static int expand_inode_data(struct inode *inode, loff_t offset,
1600 loff_t len, int mode)
1601{
4081363f 1602 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
d5097be5 1603 struct f2fs_map_blocks map = { .m_next_pgofs = NULL,
f9d6d059
CY		 1604 .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE,
1605 .m_may_create = true };
e12dd7bd 1606 pgoff_t pg_end;
fbfa2cc5 1607 loff_t new_size = i_size_read(inode);
e12dd7bd 1608 loff_t off_end;
a7de6086 1609 int err;
fbfa2cc5 1610
a7de6086
JK		 1611 err = inode_newsize_ok(inode, (len + offset));
1612 if (err)
1613 return err;
fbfa2cc5 1614
a7de6086
JK		 1615 err = f2fs_convert_inline_inode(inode);
1616 if (err)
1617 return err;
9e09fc85 1618
2c4db1a6 1619 f2fs_balance_fs(sbi, true);
2a340760 1620
e12dd7bd 1621 pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT;
09cbfeaf 1622 off_end = (offset + len) & (PAGE_SIZE - 1);
fbfa2cc5 1623
e12dd7bd
JK		 1624 map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT;
1625 map.m_len = pg_end - map.m_lblk;
1626 if (off_end)
1627 map.m_len++;
ead43275 1628
f5a53edc
JK		 1629 if (!map.m_len)
1630 return 0;
1631
1632 if (f2fs_is_pinned_file(inode)) {
1633 block_t len = (map.m_len >> sbi->log_blocks_per_seg) <<
1634 sbi->log_blocks_per_seg;
1635 block_t done = 0;
1636
1637 if (map.m_len % sbi->blocks_per_seg)
1638 len += sbi->blocks_per_seg;
1639
1640 map.m_len = sbi->blocks_per_seg;
1641next_alloc:
1642 if (has_not_enough_free_secs(sbi, 0,
1643 GET_SEC_FROM_SEG(sbi, overprovision_segments(sbi)))) {
fb24fea7 1644 down_write(&sbi->gc_lock);
f5a53edc
JK		 1645 err = f2fs_gc(sbi, true, false, NULL_SEGNO);
1646 if (err && err != -ENODATA && err != -EAGAIN)
1647 goto out_err;
1648 }
1649
1650 down_write(&sbi->pin_sem);
1651 map.m_seg_type = CURSEG_COLD_DATA_PINNED;
1652 f2fs_allocate_new_segments(sbi, CURSEG_COLD_DATA);
1653 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_DIO);
1654 up_write(&sbi->pin_sem);
cad3836f 1655
f5a53edc
JK		 1656 done += map.m_len;
1657 len -= map.m_len;
1658 map.m_lblk += map.m_len;
1659 if (!err && len)
1660 goto next_alloc;
1661
1662 map.m_len = done;
1663 } else {
1664 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
1665 }
1666out_err:
a7de6086 1667 if (err) {
e12dd7bd 1668 pgoff_t last_off;
fbfa2cc5 1669
e12dd7bd 1670 if (!map.m_len)
a7de6086 1671 return err;
98397ff3 1672
e12dd7bd
JK		 1673 last_off = map.m_lblk + map.m_len - 1;
1674
1675 /* update new size to the failed position */
1061fd48 1676 new_size = (last_off == pg_end) ? offset + len :
e12dd7bd
JK		 1677 (loff_t)(last_off + 1) << PAGE_SHIFT;
1678 } else {
1679 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
fbfa2cc5
JK		 1680 }
1681
e8ed90a6
CY		 1682 if (new_size > i_size_read(inode)) {
1683 if (mode & FALLOC_FL_KEEP_SIZE)
1684 file_set_keep_isize(inode);
1685 else
1686 f2fs_i_size_write(inode, new_size);
1687 }
fbfa2cc5 1688
a7de6086 1689 return err;
fbfa2cc5
JK		 1690}
1691
1692static long f2fs_fallocate(struct file *file, int mode,
1693 loff_t offset, loff_t len)
1694{
6131ffaa 1695 struct inode *inode = file_inode(file);
587c0a42 1696 long ret = 0;
fbfa2cc5 1697
1f227a3e
JK		 1698 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
1699 return -EIO;
00e09c0b
CY		 1700 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode)))
1701 return -ENOSPC;
4c8ff709
CY		 1702 if (!f2fs_is_compress_backend_ready(inode))
1703 return -EOPNOTSUPP;
1f227a3e 1704
c998012b
CY		 1705 /* f2fs only support ->fallocate for regular file */
1706 if (!S_ISREG(inode->i_mode))
1707 return -EINVAL;
1708
62230e0d 1709 if (IS_ENCRYPTED(inode) &&
f62185d0 1710 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
fcc85a4d
JK		 1711 return -EOPNOTSUPP;
1712
4c8ff709
CY		 1713 if (f2fs_compressed_file(inode) &&
1714 (mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE |
1715 FALLOC_FL_ZERO_RANGE | FALLOC_FL_INSERT_RANGE)))
1716 return -EOPNOTSUPP;
1717
b4ace337 1718 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
f62185d0
CY		 1719 FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1720 FALLOC_FL_INSERT_RANGE))
fbfa2cc5
JK		 1721 return -EOPNOTSUPP;
1722
5955102c 1723 inode_lock(inode);
3375f696 1724
587c0a42
TY		 1725 if (mode & FALLOC_FL_PUNCH_HOLE) {
1726 if (offset >= inode->i_size)
1727 goto out;
1728
a66c7b2f 1729 ret = punch_hole(inode, offset, len);
b4ace337
CY		 1730 } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1731 ret = f2fs_collapse_range(inode, offset, len);
75cd4e09
CY		 1732 } else if (mode & FALLOC_FL_ZERO_RANGE) {
1733 ret = f2fs_zero_range(inode, offset, len, mode);
f62185d0
CY		 1734 } else if (mode & FALLOC_FL_INSERT_RANGE) {
1735 ret = f2fs_insert_range(inode, offset, len);
b4ace337 1736 } else {
fbfa2cc5 1737 ret = expand_inode_data(inode, offset, len, mode);
b4ace337 1738 }
fbfa2cc5 1739
3af60a49 1740 if (!ret) {
078cd827 1741 inode->i_mtime = inode->i_ctime = current_time(inode);
7c45729a 1742 f2fs_mark_inode_dirty_sync(inode, false);
d0239e1b 1743 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3af60a49 1744 }
3375f696 1745
587c0a42 1746out:
5955102c 1747 inode_unlock(inode);
3375f696 1748
c01e2853 1749 trace_f2fs_fallocate(inode, mode, offset, len, ret);
fbfa2cc5
JK		 1750 return ret;
1751}
1752
1e84371f
JK		 1753static int f2fs_release_file(struct inode *inode, struct file *filp)
1754{
de5307e4
JK		 1755 /*
1756 * f2fs_relase_file is called at every close calls. So we should
1757 * not drop any inmemory pages by close called by other process.
1758 */
1759 if (!(filp->f_mode & FMODE_WRITE) ||
1760 atomic_read(&inode->i_writecount) != 1)
1761 return 0;
1762
1e84371f
JK		 1763 /* some remained atomic pages should discarded */
1764 if (f2fs_is_atomic_file(inode))
4d57b86d 1765 f2fs_drop_inmem_pages(inode);
1e84371f 1766 if (f2fs_is_volatile_file(inode)) {
91942321 1767 set_inode_flag(inode, FI_DROP_CACHE);
1e84371f 1768 filemap_fdatawrite(inode->i_mapping);
91942321 1769 clear_inode_flag(inode, FI_DROP_CACHE);
dfa74280
CY		 1770 clear_inode_flag(inode, FI_VOLATILE_FILE);
1771 stat_dec_volatile_write(inode);
1e84371f
JK		 1772 }
1773 return 0;
1774}
1775
7a10f017 1776static int f2fs_file_flush(struct file *file, fl_owner_t id)
fbfa2cc5 1777{
7a10f017
JK		 1778 struct inode *inode = file_inode(file);
1779
1780 /*
1781 * If the process doing a transaction is crashed, we should do
1782 * roll-back. Otherwise, other reader/write can see corrupted database
1783 * until all the writers close its file. Since this should be done
1784 * before dropping file lock, it needs to do in ->flush.
1785 */
1786 if (f2fs_is_atomic_file(inode) &&
1787 F2FS_I(inode)->inmem_task == current)
4d57b86d 1788 f2fs_drop_inmem_pages(inode);
7a10f017 1789 return 0;
fbfa2cc5
JK		 1790}
1791
36098557 1792static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask)
2c1d0305
CY		 1793{
1794 struct f2fs_inode_info *fi = F2FS_I(inode);
99eabb91
JK		 1795 u32 masked_flags = fi->i_flags & mask;
1796
1797 f2fs_bug_on(F2FS_I_SB(inode), (iflags & ~mask));
2c1d0305
CY		 1798
1799 /* Is it quota file? Do not allow user to mess with it */
1800 if (IS_NOQUOTA(inode))
1801 return -EPERM;
1802
99eabb91 1803 if ((iflags ^ masked_flags) & F2FS_CASEFOLD_FL) {
2c2eb7a3
DR		 1804 if (!f2fs_sb_has_casefold(F2FS_I_SB(inode)))
1805 return -EOPNOTSUPP;
1806 if (!f2fs_empty_dir(inode))
1807 return -ENOTEMPTY;
1808 }
1809
4c8ff709
CY		 1810 if (iflags & (F2FS_COMPR_FL | F2FS_NOCOMP_FL)) {
1811 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
1812 return -EOPNOTSUPP;
1813 if ((iflags & F2FS_COMPR_FL) && (iflags & F2FS_NOCOMP_FL))
1814 return -EINVAL;
1815 }
1816
99eabb91 1817 if ((iflags ^ masked_flags) & F2FS_COMPR_FL) {
aa576970 1818 if (masked_flags & F2FS_COMPR_FL) {
2536ac68
CY		 1819 if (f2fs_disable_compressed_file(inode))
1820 return -EINVAL;
1821 }
4c8ff709
CY		 1822 if (iflags & F2FS_NOCOMP_FL)
1823 return -EINVAL;
1824 if (iflags & F2FS_COMPR_FL) {
4c8ff709
CY		 1825 if (!f2fs_may_compress(inode))
1826 return -EINVAL;
1827
1828 set_compress_context(inode);
1829 }
1830 }
99eabb91
JK		 1831 if ((iflags ^ masked_flags) & F2FS_NOCOMP_FL) {
1832 if (masked_flags & F2FS_COMPR_FL)
4c8ff709
CY		 1833 return -EINVAL;
1834 }
1835
d5e5efa2 1836 fi->i_flags = iflags | (fi->i_flags & ~mask);
4c8ff709
CY		 1837 f2fs_bug_on(F2FS_I_SB(inode), (fi->i_flags & F2FS_COMPR_FL) &&
1838 (fi->i_flags & F2FS_NOCOMP_FL));
2c1d0305 1839
59c84408 1840 if (fi->i_flags & F2FS_PROJINHERIT_FL)
2c1d0305
CY		 1841 set_inode_flag(inode, FI_PROJ_INHERIT);
1842 else
1843 clear_inode_flag(inode, FI_PROJ_INHERIT);
1844
1845 inode->i_ctime = current_time(inode);
1846 f2fs_set_inode_flags(inode);
b32e0190 1847 f2fs_mark_inode_dirty_sync(inode, true);
2c1d0305
CY		 1848 return 0;
1849}
1850
36098557
EB		 1851/* FS_IOC_GETFLAGS and FS_IOC_SETFLAGS support */
1852
1853/*
1854 * To make a new on-disk f2fs i_flag gettable via FS_IOC_GETFLAGS, add an entry
1855 * for it to f2fs_fsflags_map[], and add its FS_*_FL equivalent to
1856 * F2FS_GETTABLE_FS_FL. To also make it settable via FS_IOC_SETFLAGS, also add
1857 * its FS_*_FL equivalent to F2FS_SETTABLE_FS_FL.
1858 */
1859
1860static const struct {
1861 u32 iflag;
1862 u32 fsflag;
1863} f2fs_fsflags_map[] = {
4c8ff709 1864 { F2FS_COMPR_FL, FS_COMPR_FL },
36098557
EB		 1865 { F2FS_SYNC_FL, FS_SYNC_FL },
1866 { F2FS_IMMUTABLE_FL, FS_IMMUTABLE_FL },
1867 { F2FS_APPEND_FL, FS_APPEND_FL },
1868 { F2FS_NODUMP_FL, FS_NODUMP_FL },
1869 { F2FS_NOATIME_FL, FS_NOATIME_FL },
4c8ff709 1870 { F2FS_NOCOMP_FL, FS_NOCOMP_FL },
36098557
EB		 1871 { F2FS_INDEX_FL, FS_INDEX_FL },
1872 { F2FS_DIRSYNC_FL, FS_DIRSYNC_FL },
1873 { F2FS_PROJINHERIT_FL, FS_PROJINHERIT_FL },
2c2eb7a3 1874 { F2FS_CASEFOLD_FL, FS_CASEFOLD_FL },
36098557
EB		 1875};
1876
1877#define F2FS_GETTABLE_FS_FL ( \
4c8ff709 1878 FS_COMPR_FL | \
36098557
EB		 1879 FS_SYNC_FL | \
1880 FS_IMMUTABLE_FL | \
1881 FS_APPEND_FL | \
1882 FS_NODUMP_FL | \
1883 FS_NOATIME_FL | \
4c8ff709 1884 FS_NOCOMP_FL | \
36098557
EB		 1885 FS_INDEX_FL | \
1886 FS_DIRSYNC_FL | \
1887 FS_PROJINHERIT_FL | \
1888 FS_ENCRYPT_FL | \
1889 FS_INLINE_DATA_FL | \
95ae251f 1890 FS_NOCOW_FL | \
fbc246a1 1891 FS_VERITY_FL | \
2c2eb7a3 1892 FS_CASEFOLD_FL)
36098557
EB		 1893
1894#define F2FS_SETTABLE_FS_FL ( \
4c8ff709 1895 FS_COMPR_FL | \
36098557
EB		 1896 FS_SYNC_FL | \
1897 FS_IMMUTABLE_FL | \
1898 FS_APPEND_FL | \
1899 FS_NODUMP_FL | \
1900 FS_NOATIME_FL | \
4c8ff709 1901 FS_NOCOMP_FL | \
36098557 1902 FS_DIRSYNC_FL | \
2c2eb7a3
DR		 1903 FS_PROJINHERIT_FL | \
1904 FS_CASEFOLD_FL)
36098557
EB		 1905
1906/* Convert f2fs on-disk i_flags to FS_IOC_{GET,SET}FLAGS flags */
1907static inline u32 f2fs_iflags_to_fsflags(u32 iflags)
1908{
1909 u32 fsflags = 0;
1910 int i;
1911
1912 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1913 if (iflags & f2fs_fsflags_map[i].iflag)
1914 fsflags |= f2fs_fsflags_map[i].fsflag;
1915
1916 return fsflags;
1917}
1918
1919/* Convert FS_IOC_{GET,SET}FLAGS flags to f2fs on-disk i_flags */
1920static inline u32 f2fs_fsflags_to_iflags(u32 fsflags)
1921{
1922 u32 iflags = 0;
1923 int i;
1924
1925 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1926 if (fsflags & f2fs_fsflags_map[i].fsflag)
1927 iflags |= f2fs_fsflags_map[i].iflag;
1928
1929 return iflags;
1930}
1931
1932static int f2fs_ioc_getflags(struct file *filp, unsigned long arg)
1933{
1934 struct inode *inode = file_inode(filp);
1935 struct f2fs_inode_info *fi = F2FS_I(inode);
1936 u32 fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
1937
1938 if (IS_ENCRYPTED(inode))
1939 fsflags |= FS_ENCRYPT_FL;
95ae251f
EB		 1940 if (IS_VERITY(inode))
1941 fsflags |= FS_VERITY_FL;
36098557
EB		 1942 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))
1943 fsflags |= FS_INLINE_DATA_FL;
1944 if (is_inode_flag_set(inode, FI_PIN_FILE))
1945 fsflags |= FS_NOCOW_FL;
1946
1947 fsflags &= F2FS_GETTABLE_FS_FL;
1948
1949 return put_user(fsflags, (int __user *)arg);
1950}
1951
52656e6c
JK		 1952static int f2fs_ioc_setflags(struct file *filp, unsigned long arg)
1953{
1954 struct inode *inode = file_inode(filp);
a1f32eec
EB		 1955 struct f2fs_inode_info *fi = F2FS_I(inode);
1956 u32 fsflags, old_fsflags;
36098557 1957 u32 iflags;
52656e6c 1958 int ret;
fbfa2cc5 1959
7fb17fe4
CY		 1960 if (!inode_owner_or_capable(inode))
1961 return -EACCES;
1962
36098557 1963 if (get_user(fsflags, (int __user *)arg))
7fb17fe4
CY		 1964 return -EFAULT;
1965
36098557
EB		 1966 if (fsflags & ~F2FS_GETTABLE_FS_FL)
1967 return -EOPNOTSUPP;
1968 fsflags &= F2FS_SETTABLE_FS_FL;
1969
1970 iflags = f2fs_fsflags_to_iflags(fsflags);
1971 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
1972 return -EOPNOTSUPP;
1973
52656e6c
JK		 1974 ret = mnt_want_write_file(filp);
1975 if (ret)
1976 return ret;
fbfa2cc5 1977
5955102c 1978 inode_lock(inode);
fbfa2cc5 1979
a1f32eec
EB		 1980 old_fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
1981 ret = vfs_ioc_setflags_prepare(inode, old_fsflags, fsflags);
1982 if (ret)
1983 goto out;
1984
36098557
EB		 1985 ret = f2fs_setflags_common(inode, iflags,
1986 f2fs_fsflags_to_iflags(F2FS_SETTABLE_FS_FL));
a1f32eec 1987out:
a72d4b97 1988 inode_unlock(inode);
52656e6c
JK		 1989 mnt_drop_write_file(filp);
1990 return ret;
1991}
4b2fecc8 1992
d49f3e89
CY		 1993static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
1994{
1995 struct inode *inode = file_inode(filp);
1996
1997 return put_user(inode->i_generation, (int __user *)arg);
1998}
1999
88b88a66
JK		 2000static int f2fs_ioc_start_atomic_write(struct file *filp)
2001{
2002 struct inode *inode = file_inode(filp);
743b620c
JK		 2003 struct f2fs_inode_info *fi = F2FS_I(inode);
2004 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
f4c9c743 2005 int ret;
88b88a66
JK		 2006
2007 if (!inode_owner_or_capable(inode))
2008 return -EACCES;
2009
e811898c
JK		 2010 if (!S_ISREG(inode->i_mode))
2011 return -EINVAL;
2012
038d0698
CY		 2013 if (filp->f_flags & O_DIRECT)
2014 return -EINVAL;
2015
7fb17fe4
CY		 2016 ret = mnt_want_write_file(filp);
2017 if (ret)
2018 return ret;
2019
0fac558b
CY		 2020 inode_lock(inode);
2021
4c8ff709
CY		 2022 f2fs_disable_compressed_file(inode);
2023
455e3a58
JK		 2024 if (f2fs_is_atomic_file(inode)) {
2025 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST))
2026 ret = -EINVAL;
7fb17fe4 2027 goto out;
455e3a58 2028 }
88b88a66 2029
f4c9c743
CY		 2030 ret = f2fs_convert_inline_inode(inode);
2031 if (ret)
7fb17fe4 2032 goto out;
88b88a66 2033
6f8d4455
JK		 2034 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
2035
31867b23
JK		 2036 /*
2037 * Should wait end_io to count F2FS_WB_CP_DATA correctly by
2038 * f2fs_is_atomic_file.
2039 */
2040 if (get_dirty_pages(inode))
dcbb4c10
JP		 2041 f2fs_warn(F2FS_I_SB(inode), "Unexpected flush for atomic writes: ino=%lu, npages=%u",
2042 inode->i_ino, get_dirty_pages(inode));
c27753d6 2043 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
6f8d4455
JK		 2044 if (ret) {
2045 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
684ca7e5 2046 goto out;
6f8d4455 2047 }
31867b23 2048
743b620c
JK		 2049 spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
2050 if (list_empty(&fi->inmem_ilist))
2051 list_add_tail(&fi->inmem_ilist, &sbi->inode_list[ATOMIC_FILE]);
677017d1 2052 sbi->atomic_files++;
743b620c
JK		 2053 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
2054
2055 /* add inode in inmem_list first and set atomic_file */
054afda9 2056 set_inode_flag(inode, FI_ATOMIC_FILE);
2ef79ecb 2057 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
6f8d4455 2058 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
684ca7e5 2059
6f8d4455 2060 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7a10f017 2061 F2FS_I(inode)->inmem_task = current;
26a28a0c 2062 stat_update_max_atomic_write(inode);
684ca7e5 2063out:
0fac558b 2064 inode_unlock(inode);
7fb17fe4 2065 mnt_drop_write_file(filp);
c27753d6 2066 return ret;
88b88a66
JK		 2067}
2068
2069static int f2fs_ioc_commit_atomic_write(struct file *filp)
2070{
2071 struct inode *inode = file_inode(filp);
2072 int ret;
2073
2074 if (!inode_owner_or_capable(inode))
2075 return -EACCES;
2076
2077 ret = mnt_want_write_file(filp);
2078 if (ret)
2079 return ret;
2080
6f8d4455 2081 f2fs_balance_fs(F2FS_I_SB(inode), true);
0fac558b 2082
6f8d4455 2083 inode_lock(inode);
1dc0f899 2084
b169c3c5
CY		 2085 if (f2fs_is_volatile_file(inode)) {
2086 ret = -EINVAL;
7fb17fe4 2087 goto err_out;
b169c3c5 2088 }
7fb17fe4 2089
6282adbf 2090 if (f2fs_is_atomic_file(inode)) {
4d57b86d 2091 ret = f2fs_commit_inmem_pages(inode);
5fe45743 2092 if (ret)
edb27dee 2093 goto err_out;
5fe45743 2094
26a28a0c 2095 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
743b620c
JK		 2096 if (!ret)
2097 f2fs_drop_inmem_pages(inode);
26a28a0c 2098 } else {
774e1b78 2099 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false);
6282adbf 2100 }
edb27dee 2101err_out:
2ef79ecb
CY		 2102 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) {
2103 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2104 ret = -EINVAL;
2105 }
0fac558b 2106 inode_unlock(inode);
88b88a66
JK		 2107 mnt_drop_write_file(filp);
2108 return ret;
2109}
2110
02a1335f
JK		 2111static int f2fs_ioc_start_volatile_write(struct file *filp)
2112{
2113 struct inode *inode = file_inode(filp);
f4c9c743 2114 int ret;
02a1335f
JK		 2115
2116 if (!inode_owner_or_capable(inode))
2117 return -EACCES;
2118
8ff0971f
CY		 2119 if (!S_ISREG(inode->i_mode))
2120 return -EINVAL;
2121
7fb17fe4
CY		 2122 ret = mnt_want_write_file(filp);
2123 if (ret)
2124 return ret;
2125
0fac558b
CY		 2126 inode_lock(inode);
2127
1e84371f 2128 if (f2fs_is_volatile_file(inode))
7fb17fe4 2129 goto out;
1e84371f 2130
f4c9c743
CY		 2131 ret = f2fs_convert_inline_inode(inode);
2132 if (ret)
7fb17fe4 2133 goto out;
b3d208f9 2134
648d50ba
CY		 2135 stat_inc_volatile_write(inode);
2136 stat_update_max_volatile_write(inode);
2137
91942321 2138 set_inode_flag(inode, FI_VOLATILE_FILE);
d0239e1b 2139 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7fb17fe4 2140out:
0fac558b 2141 inode_unlock(inode);
7fb17fe4
CY		 2142 mnt_drop_write_file(filp);
2143 return ret;
02a1335f
JK		 2144}
2145
1e84371f
JK		 2146static int f2fs_ioc_release_volatile_write(struct file *filp)
2147{
2148 struct inode *inode = file_inode(filp);
7fb17fe4 2149 int ret;
1e84371f
JK		 2150
2151 if (!inode_owner_or_capable(inode))
2152 return -EACCES;
2153
7fb17fe4
CY		 2154 ret = mnt_want_write_file(filp);
2155 if (ret)
2156 return ret;
2157
0fac558b
CY		 2158 inode_lock(inode);
2159
1e84371f 2160 if (!f2fs_is_volatile_file(inode))
7fb17fe4 2161 goto out;
1e84371f 2162
7fb17fe4
CY		 2163 if (!f2fs_is_first_block_written(inode)) {
2164 ret = truncate_partial_data_page(inode, 0, true);
2165 goto out;
2166 }
3c6c2beb 2167
7fb17fe4
CY		 2168 ret = punch_hole(inode, 0, F2FS_BLKSIZE);
2169out:
0fac558b 2170 inode_unlock(inode);
7fb17fe4
CY		 2171 mnt_drop_write_file(filp);
2172 return ret;
1e84371f
JK		 2173}
2174
2175static int f2fs_ioc_abort_volatile_write(struct file *filp)
2176{
2177 struct inode *inode = file_inode(filp);
2178 int ret;
2179
2180 if (!inode_owner_or_capable(inode))
2181 return -EACCES;
2182
2183 ret = mnt_want_write_file(filp);
2184 if (ret)
2185 return ret;
2186
0fac558b
CY		 2187 inode_lock(inode);
2188
26dc3d44 2189 if (f2fs_is_atomic_file(inode))
4d57b86d 2190 f2fs_drop_inmem_pages(inode);
732d5648 2191 if (f2fs_is_volatile_file(inode)) {
91942321 2192 clear_inode_flag(inode, FI_VOLATILE_FILE);
648d50ba 2193 stat_dec_volatile_write(inode);
608514de 2194 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
732d5648 2195 }
de6a8ec9 2196
455e3a58
JK		 2197 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2198
0fac558b
CY		 2199 inode_unlock(inode);
2200
1e84371f 2201 mnt_drop_write_file(filp);
d0239e1b 2202 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1e84371f
JK		 2203 return ret;
2204}
2205
1abff93d
JK		 2206static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
2207{
2208 struct inode *inode = file_inode(filp);
2209 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2210 struct super_block *sb = sbi->sb;
2211 __u32 in;
2a96d8ad 2212 int ret = 0;
1abff93d
JK		 2213
2214 if (!capable(CAP_SYS_ADMIN))
2215 return -EPERM;
2216
2217 if (get_user(in, (__u32 __user *)arg))
2218 return -EFAULT;
2219
60b2b4ee
ST		 2220 if (in != F2FS_GOING_DOWN_FULLSYNC) {
2221 ret = mnt_want_write_file(filp);
2222 if (ret)
2223 return ret;
2224 }
7fb17fe4 2225
1abff93d
JK		 2226 switch (in) {
2227 case F2FS_GOING_DOWN_FULLSYNC:
2228 sb = freeze_bdev(sb->s_bdev);
d027c484
CY		 2229 if (IS_ERR(sb)) {
2230 ret = PTR_ERR(sb);
2231 goto out;
2232 }
2233 if (sb) {
38f91ca8 2234 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 2235 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
1abff93d
JK		 2236 thaw_bdev(sb->s_bdev, sb);
2237 }
2238 break;
2239 case F2FS_GOING_DOWN_METASYNC:
2240 /* do checkpoint only */
d027c484
CY		 2241 ret = f2fs_sync_fs(sb, 1);
2242 if (ret)
2243 goto out;
38f91ca8 2244 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 2245 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
1abff93d
JK		 2246 break;
2247 case F2FS_GOING_DOWN_NOSYNC:
38f91ca8 2248 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 2249 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
1abff93d 2250 break;
c912a829 2251 case F2FS_GOING_DOWN_METAFLUSH:
4d57b86d 2252 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
38f91ca8 2253 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 2254 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
c912a829 2255 break;
0cd6d9b0
JK		 2256 case F2FS_GOING_DOWN_NEED_FSCK:
2257 set_sbi_flag(sbi, SBI_NEED_FSCK);
db610a64
JK		 2258 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
2259 set_sbi_flag(sbi, SBI_IS_DIRTY);
0cd6d9b0
JK		 2260 /* do checkpoint only */
2261 ret = f2fs_sync_fs(sb, 1);
db610a64 2262 goto out;
1abff93d 2263 default:
7fb17fe4
CY		 2264 ret = -EINVAL;
2265 goto out;
1abff93d 2266 }
7950e9ac 2267
4d57b86d
CY		 2268 f2fs_stop_gc_thread(sbi);
2269 f2fs_stop_discard_thread(sbi);
7950e9ac 2270
4d57b86d 2271 f2fs_drop_discard_cmd(sbi);
7950e9ac
CY		 2272 clear_opt(sbi, DISCARD);
2273
d0239e1b 2274 f2fs_update_time(sbi, REQ_TIME);
7fb17fe4 2275out:
60b2b4ee
ST		 2276 if (in != F2FS_GOING_DOWN_FULLSYNC)
2277 mnt_drop_write_file(filp);
559e87c4
CY		 2278
2279 trace_f2fs_shutdown(sbi, in, ret);
2280
7fb17fe4 2281 return ret;
1abff93d
JK		 2282}
2283
52656e6c
JK		 2284static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
2285{
2286 struct inode *inode = file_inode(filp);
2287 struct super_block *sb = inode->i_sb;
2288 struct request_queue *q = bdev_get_queue(sb->s_bdev);
2289 struct fstrim_range range;
2290 int ret;
4b2fecc8 2291
52656e6c
JK		 2292 if (!capable(CAP_SYS_ADMIN))
2293 return -EPERM;
4b2fecc8 2294
7d20c8ab 2295 if (!f2fs_hw_support_discard(F2FS_SB(sb)))
52656e6c 2296 return -EOPNOTSUPP;
4b2fecc8 2297
52656e6c
JK		 2298 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
2299 sizeof(range)))
2300 return -EFAULT;
4b2fecc8 2301
7fb17fe4
CY		 2302 ret = mnt_want_write_file(filp);
2303 if (ret)
2304 return ret;
2305
52656e6c
JK		 2306 range.minlen = max((unsigned int)range.minlen,
2307 q->limits.discard_granularity);
2308 ret = f2fs_trim_fs(F2FS_SB(sb), &range);
7fb17fe4 2309 mnt_drop_write_file(filp);
52656e6c
JK		 2310 if (ret < 0)
2311 return ret;
4b2fecc8 2312
52656e6c
JK		 2313 if (copy_to_user((struct fstrim_range __user *)arg, &range,
2314 sizeof(range)))
2315 return -EFAULT;
d0239e1b 2316 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
52656e6c
JK		 2317 return 0;
2318}
2319
f424f664
JK		 2320static bool uuid_is_nonzero(__u8 u[16])
2321{
2322 int i;
2323
2324 for (i = 0; i < 16; i++)
2325 if (u[i])
2326 return true;
2327 return false;
2328}
2329
2330static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
2331{
f424f664
JK		 2332 struct inode *inode = file_inode(filp);
2333
7beb01f7 2334 if (!f2fs_sb_has_encrypt(F2FS_I_SB(inode)))
ead710b7
CY		 2335 return -EOPNOTSUPP;
2336
d0239e1b 2337 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7fb17fe4 2338
db717d8e 2339 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
f424f664
JK		 2340}
2341
2342static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
2343{
7beb01f7 2344 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
ead710b7 2345 return -EOPNOTSUPP;
db717d8e 2346 return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
f424f664
JK		 2347}
2348
2349static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
2350{
2351 struct inode *inode = file_inode(filp);
2352 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2353 int err;
2354
7beb01f7 2355 if (!f2fs_sb_has_encrypt(sbi))
f424f664
JK		 2356 return -EOPNOTSUPP;
2357
f424f664
JK		 2358 err = mnt_want_write_file(filp);
2359 if (err)
2360 return err;
2361
846ae671 2362 down_write(&sbi->sb_lock);
d0d3f1b3
CY		 2363
2364 if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
2365 goto got_it;
2366
f424f664
JK		 2367 /* update superblock with uuid */
2368 generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
2369
c5bda1c8 2370 err = f2fs_commit_super(sbi, false);
f424f664
JK		 2371 if (err) {
2372 /* undo new data */
2373 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
d0d3f1b3 2374 goto out_err;
f424f664
JK		 2375 }
2376got_it:
2377 if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt,
2378 16))
d0d3f1b3
CY		 2379 err = -EFAULT;
2380out_err:
846ae671 2381 up_write(&sbi->sb_lock);
d0d3f1b3
CY		 2382 mnt_drop_write_file(filp);
2383 return err;
f424f664
JK		 2384}
2385
8ce589c7
EB		 2386static int f2fs_ioc_get_encryption_policy_ex(struct file *filp,
2387 unsigned long arg)
2388{
2389 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2390 return -EOPNOTSUPP;
2391
2392 return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg);
2393}
2394
2395static int f2fs_ioc_add_encryption_key(struct file *filp, unsigned long arg)
2396{
2397 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2398 return -EOPNOTSUPP;
2399
2400 return fscrypt_ioctl_add_key(filp, (void __user *)arg);
2401}
2402
2403static int f2fs_ioc_remove_encryption_key(struct file *filp, unsigned long arg)
2404{
2405 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2406 return -EOPNOTSUPP;
2407
2408 return fscrypt_ioctl_remove_key(filp, (void __user *)arg);
2409}
2410
2411static int f2fs_ioc_remove_encryption_key_all_users(struct file *filp,
2412 unsigned long arg)
2413{
2414 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2415 return -EOPNOTSUPP;
2416
2417 return fscrypt_ioctl_remove_key_all_users(filp, (void __user *)arg);
2418}
2419
2420static int f2fs_ioc_get_encryption_key_status(struct file *filp,
2421 unsigned long arg)
2422{
2423 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2424 return -EOPNOTSUPP;
2425
2426 return fscrypt_ioctl_get_key_status(filp, (void __user *)arg);
2427}
2428
ee446e1a
EB		 2429static int f2fs_ioc_get_encryption_nonce(struct file *filp, unsigned long arg)
2430{
2431 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2432 return -EOPNOTSUPP;
2433
2434 return fscrypt_ioctl_get_nonce(filp, (void __user *)arg);
2435}
2436
c1c1b583
CY		 2437static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
2438{
2439 struct inode *inode = file_inode(filp);
2440 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
d530d4d8 2441 __u32 sync;
7fb17fe4 2442 int ret;
c1c1b583
CY		 2443
2444 if (!capable(CAP_SYS_ADMIN))
2445 return -EPERM;
2446
d530d4d8 2447 if (get_user(sync, (__u32 __user *)arg))
c1c1b583
CY		 2448 return -EFAULT;
2449
d530d4d8
CY		 2450 if (f2fs_readonly(sbi->sb))
2451 return -EROFS;
c1c1b583 2452
7fb17fe4
CY		 2453 ret = mnt_want_write_file(filp);
2454 if (ret)
2455 return ret;
2456
d530d4d8 2457 if (!sync) {
fb24fea7 2458 if (!down_write_trylock(&sbi->gc_lock)) {
7fb17fe4
CY		 2459 ret = -EBUSY;
2460 goto out;
2461 }
d530d4d8 2462 } else {
fb24fea7 2463 down_write(&sbi->gc_lock);
c1c1b583
CY		 2464 }
2465
e066b83c 2466 ret = f2fs_gc(sbi, sync, true, NULL_SEGNO);
7fb17fe4
CY		 2467out:
2468 mnt_drop_write_file(filp);
2469 return ret;
c1c1b583
CY		 2470}
2471
34dc77ad
JK		 2472static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
2473{
2474 struct inode *inode = file_inode(filp);
2475 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2476 struct f2fs_gc_range range;
2477 u64 end;
2478 int ret;
2479
2480 if (!capable(CAP_SYS_ADMIN))
2481 return -EPERM;
2482
2483 if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
2484 sizeof(range)))
2485 return -EFAULT;
2486
2487 if (f2fs_readonly(sbi->sb))
2488 return -EROFS;
2489
b82f6e34 2490 end = range.start + range.len;
fbbf7799
ST		 2491 if (end < range.start || range.start < MAIN_BLKADDR(sbi) ||
2492 end >= MAX_BLKADDR(sbi))
b82f6e34 2493 return -EINVAL;
b82f6e34 2494
34dc77ad
JK		 2495 ret = mnt_want_write_file(filp);
2496 if (ret)
2497 return ret;
2498
34dc77ad
JK		 2499do_more:
2500 if (!range.sync) {
fb24fea7 2501 if (!down_write_trylock(&sbi->gc_lock)) {
34dc77ad
JK		 2502 ret = -EBUSY;
2503 goto out;
2504 }
2505 } else {
fb24fea7 2506 down_write(&sbi->gc_lock);
34dc77ad
JK		 2507 }
2508
2509 ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start));
67b0e42b 2510 range.start += BLKS_PER_SEC(sbi);
34dc77ad
JK		 2511 if (range.start <= end)
2512 goto do_more;
2513out:
2514 mnt_drop_write_file(filp);
2515 return ret;
2516}
2517
059c0648 2518static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
456b88e4
CY		 2519{
2520 struct inode *inode = file_inode(filp);
2521 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7fb17fe4 2522 int ret;
456b88e4
CY		 2523
2524 if (!capable(CAP_SYS_ADMIN))
2525 return -EPERM;
2526
2527 if (f2fs_readonly(sbi->sb))
2528 return -EROFS;
2529
4354994f 2530 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
dcbb4c10 2531 f2fs_info(sbi, "Skipping Checkpoint. Checkpoints currently disabled.");
4354994f
DR		 2532 return -EINVAL;
2533 }
2534
7fb17fe4
CY		 2535 ret = mnt_want_write_file(filp);
2536 if (ret)
2537 return ret;
2538
2539 ret = f2fs_sync_fs(sbi->sb, 1);
2540
2541 mnt_drop_write_file(filp);
2542 return ret;
456b88e4
CY		 2543}
2544
d323d005
CY		 2545static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
2546 struct file *filp,
2547 struct f2fs_defragment *range)
2548{
2549 struct inode *inode = file_inode(filp);
f3d98e74 2550 struct f2fs_map_blocks map = { .m_next_extent = NULL,
f4f0b677
JZ		 2551 .m_seg_type = NO_CHECK_TYPE ,
2552 .m_may_create = false };
1061fd48 2553 struct extent_info ei = {0, 0, 0};
f3d98e74 2554 pgoff_t pg_start, pg_end, next_pgofs;
3519e3f9 2555 unsigned int blk_per_seg = sbi->blocks_per_seg;
d323d005 2556 unsigned int total = 0, sec_num;
d323d005
CY		 2557 block_t blk_end = 0;
2558 bool fragmented = false;
2559 int err;
2560
2561 /* if in-place-update policy is enabled, don't waste time here */
4d57b86d 2562 if (f2fs_should_update_inplace(inode, NULL))
d323d005
CY		 2563 return -EINVAL;
2564
09cbfeaf
KS		 2565 pg_start = range->start >> PAGE_SHIFT;
2566 pg_end = (range->start + range->len) >> PAGE_SHIFT;
d323d005 2567
2c4db1a6 2568 f2fs_balance_fs(sbi, true);
d323d005 2569
5955102c 2570 inode_lock(inode);
d323d005
CY		 2571
2572 /* writeback all dirty pages in the range */
2573 err = filemap_write_and_wait_range(inode->i_mapping, range->start,
d8fe4f0e 2574 range->start + range->len - 1);
d323d005
CY		 2575 if (err)
2576 goto out;
2577
2578 /*
2579 * lookup mapping info in extent cache, skip defragmenting if physical
2580 * block addresses are continuous.
2581 */
2582 if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) {
2583 if (ei.fofs + ei.len >= pg_end)
2584 goto out;
2585 }
2586
2587 map.m_lblk = pg_start;
f3d98e74 2588 map.m_next_pgofs = &next_pgofs;
d323d005
CY		 2589
2590 /*
2591 * lookup mapping info in dnode page cache, skip defragmenting if all
2592 * physical block addresses are continuous even if there are hole(s)
2593 * in logical blocks.
2594 */
2595 while (map.m_lblk < pg_end) {
a1c1e9b7 2596 map.m_len = pg_end - map.m_lblk;
f2220c7f 2597 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
d323d005
CY		 2598 if (err)
2599 goto out;
2600
2601 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
f3d98e74 2602 map.m_lblk = next_pgofs;
d323d005
CY		 2603 continue;
2604 }
2605
25a912e5 2606 if (blk_end && blk_end != map.m_pblk)
d323d005 2607 fragmented = true;
25a912e5
CY		 2608
2609 /* record total count of block that we're going to move */
2610 total += map.m_len;
2611
d323d005
CY		 2612 blk_end = map.m_pblk + map.m_len;
2613
2614 map.m_lblk += map.m_len;
d323d005
CY		 2615 }
2616
d3a1a0e1
CY		 2617 if (!fragmented) {
2618 total = 0;
d323d005 2619 goto out;
d3a1a0e1 2620 }
d323d005 2621
f91108b8 2622 sec_num = DIV_ROUND_UP(total, BLKS_PER_SEC(sbi));
d323d005
CY		 2623
2624 /*
2625 * make sure there are enough free section for LFS allocation, this can
2626 * avoid defragment running in SSR mode when free section are allocated
2627 * intensively
2628 */
7f3037a5 2629 if (has_not_enough_free_secs(sbi, 0, sec_num)) {
d323d005
CY		 2630 err = -EAGAIN;
2631 goto out;
2632 }
2633
25a912e5
CY		 2634 map.m_lblk = pg_start;
2635 map.m_len = pg_end - pg_start;
2636 total = 0;
2637
d323d005
CY		 2638 while (map.m_lblk < pg_end) {
2639 pgoff_t idx;
2640 int cnt = 0;
2641
2642do_map:
a1c1e9b7 2643 map.m_len = pg_end - map.m_lblk;
f2220c7f 2644 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
d323d005
CY		 2645 if (err)
2646 goto clear_out;
2647
2648 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
f3d98e74 2649 map.m_lblk = next_pgofs;
d3a1a0e1 2650 goto check;
d323d005
CY		 2651 }
2652
91942321 2653 set_inode_flag(inode, FI_DO_DEFRAG);
d323d005
CY		 2654
2655 idx = map.m_lblk;
2656 while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) {
2657 struct page *page;
2658
4d57b86d 2659 page = f2fs_get_lock_data_page(inode, idx, true);
d323d005
CY		 2660 if (IS_ERR(page)) {
2661 err = PTR_ERR(page);
2662 goto clear_out;
2663 }
2664
2665 set_page_dirty(page);
2666 f2fs_put_page(page, 1);
2667
2668 idx++;
2669 cnt++;
2670 total++;
2671 }
2672
2673 map.m_lblk = idx;
d3a1a0e1
CY		 2674check:
2675 if (map.m_lblk < pg_end && cnt < blk_per_seg)
d323d005
CY		 2676 goto do_map;
2677
91942321 2678 clear_inode_flag(inode, FI_DO_DEFRAG);
d323d005
CY		 2679
2680 err = filemap_fdatawrite(inode->i_mapping);
2681 if (err)
2682 goto out;
2683 }
2684clear_out:
91942321 2685 clear_inode_flag(inode, FI_DO_DEFRAG);
d323d005 2686out:
5955102c 2687 inode_unlock(inode);
d323d005 2688 if (!err)
09cbfeaf 2689 range->len = (u64)total << PAGE_SHIFT;
d323d005
CY		 2690 return err;
2691}
2692
2693static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
2694{
2695 struct inode *inode = file_inode(filp);
2696 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2697 struct f2fs_defragment range;
2698 int err;
2699
2700 if (!capable(CAP_SYS_ADMIN))
2701 return -EPERM;
2702
7eab0c0d 2703 if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode))
d323d005
CY		 2704 return -EINVAL;
2705
d7563861
KM		 2706 if (f2fs_readonly(sbi->sb))
2707 return -EROFS;
d323d005
CY		 2708
2709 if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
d7563861
KM		 2710 sizeof(range)))
2711 return -EFAULT;
d323d005
CY		 2712
2713 /* verify alignment of offset & size */
d7563861
KM		 2714 if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1))
2715 return -EINVAL;
d323d005 2716
1941d7bc 2717 if (unlikely((range.start + range.len) >> PAGE_SHIFT >
d7563861
KM		 2718 sbi->max_file_blocks))
2719 return -EINVAL;
2720
2721 err = mnt_want_write_file(filp);
2722 if (err)
2723 return err;
1941d7bc 2724
d323d005 2725 err = f2fs_defragment_range(sbi, filp, &range);
d7563861
KM		 2726 mnt_drop_write_file(filp);
2727
d0239e1b 2728 f2fs_update_time(sbi, REQ_TIME);
d323d005 2729 if (err < 0)
d7563861 2730 return err;
d323d005
CY		 2731
2732 if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
2733 sizeof(range)))
d7563861
KM		 2734 return -EFAULT;
2735
2736 return 0;
d323d005
CY		 2737}
2738
4dd6f977
JK		 2739static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
2740 struct file *file_out, loff_t pos_out, size_t len)
2741{
2742 struct inode *src = file_inode(file_in);
2743 struct inode *dst = file_inode(file_out);
2744 struct f2fs_sb_info *sbi = F2FS_I_SB(src);
2745 size_t olen = len, dst_max_i_size = 0;
2746 size_t dst_osize;
2747 int ret;
2748
2749 if (file_in->f_path.mnt != file_out->f_path.mnt ||
2750 src->i_sb != dst->i_sb)
2751 return -EXDEV;
2752
2753 if (unlikely(f2fs_readonly(src->i_sb)))
2754 return -EROFS;
2755
fe8494bf
CY		 2756 if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
2757 return -EINVAL;
4dd6f977 2758
62230e0d 2759 if (IS_ENCRYPTED(src) || IS_ENCRYPTED(dst))
4dd6f977
JK		 2760 return -EOPNOTSUPP;
2761
d95fd91c
FL		 2762 if (src == dst) {
2763 if (pos_in == pos_out)
2764 return 0;
2765 if (pos_out > pos_in && pos_out < pos_in + len)
2766 return -EINVAL;
2767 }
2768
4dd6f977 2769 inode_lock(src);
20a3d61d 2770 if (src != dst) {
bb06664a
CY		 2771 ret = -EBUSY;
2772 if (!inode_trylock(dst))
2773 goto out;
20a3d61d 2774 }
4dd6f977
JK		 2775
2776 ret = -EINVAL;
2777 if (pos_in + len > src->i_size || pos_in + len < pos_in)
2778 goto out_unlock;
2779 if (len == 0)
2780 olen = len = src->i_size - pos_in;
2781 if (pos_in + len == src->i_size)
2782 len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in;
2783 if (len == 0) {
2784 ret = 0;
2785 goto out_unlock;
2786 }
2787
2788 dst_osize = dst->i_size;
2789 if (pos_out + olen > dst->i_size)
2790 dst_max_i_size = pos_out + olen;
2791
2792 /* verify the end result is block aligned */
2793 if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) ||
2794 !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) ||
2795 !IS_ALIGNED(pos_out, F2FS_BLKSIZE))
2796 goto out_unlock;
2797
2798 ret = f2fs_convert_inline_inode(src);
2799 if (ret)
2800 goto out_unlock;
2801
2802 ret = f2fs_convert_inline_inode(dst);
2803 if (ret)
2804 goto out_unlock;
2805
2806 /* write out all dirty pages from offset */
2807 ret = filemap_write_and_wait_range(src->i_mapping,
2808 pos_in, pos_in + len);
2809 if (ret)
2810 goto out_unlock;
2811
2812 ret = filemap_write_and_wait_range(dst->i_mapping,
2813 pos_out, pos_out + len);
2814 if (ret)
2815 goto out_unlock;
2816
2817 f2fs_balance_fs(sbi, true);
6f8d4455
JK		 2818
2819 down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2820 if (src != dst) {
2821 ret = -EBUSY;
2822 if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE]))
2823 goto out_src;
2824 }
2825
4dd6f977 2826 f2fs_lock_op(sbi);
61e4da11
FL		 2827 ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
2828 pos_out >> F2FS_BLKSIZE_BITS,
2829 len >> F2FS_BLKSIZE_BITS, false);
4dd6f977
JK		 2830
2831 if (!ret) {
2832 if (dst_max_i_size)
2833 f2fs_i_size_write(dst, dst_max_i_size);
2834 else if (dst_osize != dst->i_size)
2835 f2fs_i_size_write(dst, dst_osize);
2836 }
2837 f2fs_unlock_op(sbi);
6f8d4455
JK		 2838
2839 if (src != dst)
b2532c69 2840 up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]);
6f8d4455
JK		 2841out_src:
2842 up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2843out_unlock:
2844 if (src != dst)
4dd6f977 2845 inode_unlock(dst);
20a3d61d 2846out:
4dd6f977
JK		 2847 inode_unlock(src);
2848 return ret;
2849}
2850
2851static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
2852{
2853 struct f2fs_move_range range;
2854 struct fd dst;
2855 int err;
2856
2857 if (!(filp->f_mode & FMODE_READ) ||
2858 !(filp->f_mode & FMODE_WRITE))
2859 return -EBADF;
2860
2861 if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
2862 sizeof(range)))
2863 return -EFAULT;
2864
2865 dst = fdget(range.dst_fd);
2866 if (!dst.file)
2867 return -EBADF;
2868
2869 if (!(dst.file->f_mode & FMODE_WRITE)) {
2870 err = -EBADF;
2871 goto err_out;
2872 }
2873
2874 err = mnt_want_write_file(filp);
2875 if (err)
2876 goto err_out;
2877
2878 err = f2fs_move_file_range(filp, range.pos_in, dst.file,
2879 range.pos_out, range.len);
2880
2881 mnt_drop_write_file(filp);
3cecfa5f
KM		 2882 if (err)
2883 goto err_out;
4dd6f977
JK		 2884
2885 if (copy_to_user((struct f2fs_move_range __user *)arg,
2886 &range, sizeof(range)))
2887 err = -EFAULT;
2888err_out:
2889 fdput(dst);
2890 return err;
2891}
2892
e066b83c
JK		 2893static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
2894{
2895 struct inode *inode = file_inode(filp);
2896 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2897 struct sit_info *sm = SIT_I(sbi);
2898 unsigned int start_segno = 0, end_segno = 0;
2899 unsigned int dev_start_segno = 0, dev_end_segno = 0;
2900 struct f2fs_flush_device range;
2901 int ret;
2902
2903 if (!capable(CAP_SYS_ADMIN))
2904 return -EPERM;
2905
2906 if (f2fs_readonly(sbi->sb))
2907 return -EROFS;
2908
4354994f
DR		 2909 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2910 return -EINVAL;
2911
e066b83c
JK		 2912 if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg,
2913 sizeof(range)))
2914 return -EFAULT;
2915
0916878d 2916 if (!f2fs_is_multi_device(sbi) || sbi->s_ndevs - 1 <= range.dev_num ||
2c70c5e3 2917 __is_large_section(sbi)) {
dcbb4c10
JP		 2918 f2fs_warn(sbi, "Can't flush %u in %d for segs_per_sec %u != 1",
2919 range.dev_num, sbi->s_ndevs, sbi->segs_per_sec);
e066b83c
JK		 2920 return -EINVAL;
2921 }
2922
2923 ret = mnt_want_write_file(filp);
2924 if (ret)
2925 return ret;
2926
2927 if (range.dev_num != 0)
2928 dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk);
2929 dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk);
2930
2931 start_segno = sm->last_victim[FLUSH_DEVICE];
2932 if (start_segno < dev_start_segno || start_segno >= dev_end_segno)
2933 start_segno = dev_start_segno;
2934 end_segno = min(start_segno + range.segments, dev_end_segno);
2935
2936 while (start_segno < end_segno) {
fb24fea7 2937 if (!down_write_trylock(&sbi->gc_lock)) {
e066b83c
JK		 2938 ret = -EBUSY;
2939 goto out;
2940 }
2941 sm->last_victim[GC_CB] = end_segno + 1;
2942 sm->last_victim[GC_GREEDY] = end_segno + 1;
2943 sm->last_victim[ALLOC_NEXT] = end_segno + 1;
2944 ret = f2fs_gc(sbi, true, true, start_segno);
2945 if (ret == -EAGAIN)
2946 ret = 0;
2947 else if (ret < 0)
2948 break;
2949 start_segno++;
2950 }
2951out:
2952 mnt_drop_write_file(filp);
2953 return ret;
2954}
2955
e65ef207
JK		 2956static int f2fs_ioc_get_features(struct file *filp, unsigned long arg)
2957{
2958 struct inode *inode = file_inode(filp);
2959 u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature);
2960
2961 /* Must validate to set it with SQLite behavior in Android. */
2962 sb_feature |= F2FS_FEATURE_ATOMIC_WRITE;
2963
2964 return put_user(sb_feature, (u32 __user *)arg);
2965}
e066b83c 2966
2c1d0305 2967#ifdef CONFIG_QUOTA
78130819
CY		 2968int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
2969{
2970 struct dquot *transfer_to[MAXQUOTAS] = {};
2971 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2972 struct super_block *sb = sbi->sb;
2973 int err = 0;
2974
2975 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
2976 if (!IS_ERR(transfer_to[PRJQUOTA])) {
2977 err = __dquot_transfer(inode, transfer_to);
2978 if (err)
2979 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2980 dqput(transfer_to[PRJQUOTA]);
2981 }
2982 return err;
2983}
2984
2c1d0305
CY		 2985static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
2986{
2987 struct inode *inode = file_inode(filp);
2988 struct f2fs_inode_info *fi = F2FS_I(inode);
2989 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2c1d0305
CY		 2990 struct page *ipage;
2991 kprojid_t kprojid;
2992 int err;
2993
7beb01f7 2994 if (!f2fs_sb_has_project_quota(sbi)) {
2c1d0305
CY		 2995 if (projid != F2FS_DEF_PROJID)
2996 return -EOPNOTSUPP;
2997 else
2998 return 0;
2999 }
3000
3001 if (!f2fs_has_extra_attr(inode))
3002 return -EOPNOTSUPP;
3003
3004 kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
3005
3006 if (projid_eq(kprojid, F2FS_I(inode)->i_projid))
3007 return 0;
3008
2c1d0305 3009 err = -EPERM;
2c1d0305
CY		 3010 /* Is it quota file? Do not allow user to mess with it */
3011 if (IS_NOQUOTA(inode))
c8e92757 3012 return err;
2c1d0305 3013
4d57b86d 3014 ipage = f2fs_get_node_page(sbi, inode->i_ino);
c8e92757
WS		 3015 if (IS_ERR(ipage))
3016 return PTR_ERR(ipage);
2c1d0305
CY		 3017
3018 if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize,
3019 i_projid)) {
3020 err = -EOVERFLOW;
3021 f2fs_put_page(ipage, 1);
c8e92757 3022 return err;
2c1d0305
CY		 3023 }
3024 f2fs_put_page(ipage, 1);
3025
c22aecd7
CY		 3026 err = dquot_initialize(inode);
3027 if (err)
c8e92757 3028 return err;
2c1d0305 3029
78130819
CY		 3030 f2fs_lock_op(sbi);
3031 err = f2fs_transfer_project_quota(inode, kprojid);
3032 if (err)
3033 goto out_unlock;
2c1d0305
CY		 3034
3035 F2FS_I(inode)->i_projid = kprojid;
3036 inode->i_ctime = current_time(inode);
2c1d0305 3037 f2fs_mark_inode_dirty_sync(inode, true);
78130819
CY		 3038out_unlock:
3039 f2fs_unlock_op(sbi);
2c1d0305
CY		 3040 return err;
3041}
3042#else
78130819
CY		 3043int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
3044{
3045 return 0;
3046}
3047
2c1d0305
CY		 3048static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
3049{
3050 if (projid != F2FS_DEF_PROJID)
3051 return -EOPNOTSUPP;
3052 return 0;
3053}
3054#endif
3055
36098557
EB		 3056/* FS_IOC_FSGETXATTR and FS_IOC_FSSETXATTR support */
3057
3058/*
3059 * To make a new on-disk f2fs i_flag gettable via FS_IOC_FSGETXATTR and settable
3060 * via FS_IOC_FSSETXATTR, add an entry for it to f2fs_xflags_map[], and add its
3061 * FS_XFLAG_* equivalent to F2FS_SUPPORTED_XFLAGS.
3062 */
3063
3064static const struct {
3065 u32 iflag;
3066 u32 xflag;
3067} f2fs_xflags_map[] = {
3068 { F2FS_SYNC_FL, FS_XFLAG_SYNC },
3069 { F2FS_IMMUTABLE_FL, FS_XFLAG_IMMUTABLE },
3070 { F2FS_APPEND_FL, FS_XFLAG_APPEND },
3071 { F2FS_NODUMP_FL, FS_XFLAG_NODUMP },
3072 { F2FS_NOATIME_FL, FS_XFLAG_NOATIME },
3073 { F2FS_PROJINHERIT_FL, FS_XFLAG_PROJINHERIT },
3074};
3075
3076#define F2FS_SUPPORTED_XFLAGS ( \
3077 FS_XFLAG_SYNC | \
3078 FS_XFLAG_IMMUTABLE | \
3079 FS_XFLAG_APPEND | \
3080 FS_XFLAG_NODUMP | \
3081 FS_XFLAG_NOATIME | \
3082 FS_XFLAG_PROJINHERIT)
3083
3084/* Convert f2fs on-disk i_flags to FS_IOC_FS{GET,SET}XATTR flags */
3085static inline u32 f2fs_iflags_to_xflags(u32 iflags)
3086{
3087 u32 xflags = 0;
3088 int i;
3089
3090 for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++)
3091 if (iflags & f2fs_xflags_map[i].iflag)
3092 xflags |= f2fs_xflags_map[i].xflag;
3093
2c1d0305
CY		 3094 return xflags;
3095}
3096
36098557
EB		 3097/* Convert FS_IOC_FS{GET,SET}XATTR flags to f2fs on-disk i_flags */
3098static inline u32 f2fs_xflags_to_iflags(u32 xflags)
2c1d0305 3099{
36098557
EB		 3100 u32 iflags = 0;
3101 int i;
2c1d0305 3102
36098557
EB		 3103 for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++)
3104 if (xflags & f2fs_xflags_map[i].xflag)
3105 iflags |= f2fs_xflags_map[i].iflag;
2c1d0305
CY		 3106
3107 return iflags;
3108}
3109
6fc93c4e 3110static void f2fs_fill_fsxattr(struct inode *inode, struct fsxattr *fa)
2c1d0305 3111{
2c1d0305 3112 struct f2fs_inode_info *fi = F2FS_I(inode);
2c1d0305 3113
6fc93c4e 3114 simple_fill_fsxattr(fa, f2fs_iflags_to_xflags(fi->i_flags));
2c1d0305 3115
7beb01f7 3116 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)))
6fc93c4e 3117 fa->fsx_projid = from_kprojid(&init_user_ns, fi->i_projid);
2c1d0305
CY		 3118}
3119
6fc93c4e 3120static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg)
c8e92757 3121{
6fc93c4e
EB		 3122 struct inode *inode = file_inode(filp);
3123 struct fsxattr fa;
c8e92757 3124
6fc93c4e 3125 f2fs_fill_fsxattr(inode, &fa);
c8e92757 3126
6fc93c4e
EB		 3127 if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa)))
3128 return -EFAULT;
c8e92757
WS		 3129 return 0;
3130}
3131
2c1d0305
CY		 3132static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg)
3133{
3134 struct inode *inode = file_inode(filp);
6fc93c4e 3135 struct fsxattr fa, old_fa;
36098557 3136 u32 iflags;
2c1d0305
CY		 3137 int err;
3138
3139 if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa)))
3140 return -EFAULT;
3141
3142 /* Make sure caller has proper permission */
3143 if (!inode_owner_or_capable(inode))
3144 return -EACCES;
3145
36098557 3146 if (fa.fsx_xflags & ~F2FS_SUPPORTED_XFLAGS)
2c1d0305
CY		 3147 return -EOPNOTSUPP;
3148
36098557
EB		 3149 iflags = f2fs_xflags_to_iflags(fa.fsx_xflags);
3150 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
2c1d0305
CY		 3151 return -EOPNOTSUPP;
3152
3153 err = mnt_want_write_file(filp);
3154 if (err)
3155 return err;
3156
3157 inode_lock(inode);
6fc93c4e
EB		 3158
3159 f2fs_fill_fsxattr(inode, &old_fa);
3160 err = vfs_ioc_fssetxattr_check(inode, &old_fa, &fa);
c8e92757
WS		 3161 if (err)
3162 goto out;
6fc93c4e 3163
36098557
EB		 3164 err = f2fs_setflags_common(inode, iflags,
3165 f2fs_xflags_to_iflags(F2FS_SUPPORTED_XFLAGS));
2c1d0305 3166 if (err)
c8e92757 3167 goto out;
2c1d0305
CY		 3168
3169 err = f2fs_ioc_setproject(filp, fa.fsx_projid);
c8e92757
WS		 3170out:
3171 inode_unlock(inode);
3172 mnt_drop_write_file(filp);
3173 return err;
2c1d0305 3174}
e066b83c 3175
1ad71a27
JK		 3176int f2fs_pin_file_control(struct inode *inode, bool inc)
3177{
3178 struct f2fs_inode_info *fi = F2FS_I(inode);
3179 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3180
3181 /* Use i_gc_failures for normal file as a risk signal. */
3182 if (inc)
2ef79ecb
CY		 3183 f2fs_i_gc_failures_write(inode,
3184 fi->i_gc_failures[GC_FAILURE_PIN] + 1);
1ad71a27 3185
2ef79ecb 3186 if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) {
dcbb4c10
JP		 3187 f2fs_warn(sbi, "%s: Enable GC = ino %lx after %x GC trials",
3188 __func__, inode->i_ino,
3189 fi->i_gc_failures[GC_FAILURE_PIN]);
1ad71a27
JK		 3190 clear_inode_flag(inode, FI_PIN_FILE);
3191 return -EAGAIN;
3192 }
3193 return 0;
3194}
3195
3196static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
3197{
3198 struct inode *inode = file_inode(filp);
3199 __u32 pin;
3200 int ret = 0;
3201
1ad71a27
JK		 3202 if (get_user(pin, (__u32 __user *)arg))
3203 return -EFAULT;
3204
3205 if (!S_ISREG(inode->i_mode))
3206 return -EINVAL;
3207
3208 if (f2fs_readonly(F2FS_I_SB(inode)->sb))
3209 return -EROFS;
3210
3211 ret = mnt_want_write_file(filp);
3212 if (ret)
3213 return ret;
3214
3215 inode_lock(inode);
3216
4d57b86d 3217 if (f2fs_should_update_outplace(inode, NULL)) {
bb9e3bb8
CY		 3218 ret = -EINVAL;
3219 goto out;
3220 }
3221
1ad71a27
JK		 3222 if (!pin) {
3223 clear_inode_flag(inode, FI_PIN_FILE);
30933364 3224 f2fs_i_gc_failures_write(inode, 0);
1ad71a27
JK		 3225 goto done;
3226 }
3227
3228 if (f2fs_pin_file_control(inode, false)) {
3229 ret = -EAGAIN;
3230 goto out;
3231 }
4c8ff709 3232
1ad71a27
JK		 3233 ret = f2fs_convert_inline_inode(inode);
3234 if (ret)
3235 goto out;
3236
4c8ff709
CY		 3237 if (f2fs_disable_compressed_file(inode)) {
3238 ret = -EOPNOTSUPP;
3239 goto out;
3240 }
3241
1ad71a27 3242 set_inode_flag(inode, FI_PIN_FILE);
2ef79ecb 3243 ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
1ad71a27
JK		 3244done:
3245 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3246out:
3247 inode_unlock(inode);
3248 mnt_drop_write_file(filp);
3249 return ret;
3250}
3251
3252static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg)
3253{
3254 struct inode *inode = file_inode(filp);
3255 __u32 pin = 0;
3256
3257 if (is_inode_flag_set(inode, FI_PIN_FILE))
2ef79ecb 3258 pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
1ad71a27
JK		 3259 return put_user(pin, (u32 __user *)arg);
3260}
3261
c4020b2d
CY		 3262int f2fs_precache_extents(struct inode *inode)
3263{
3264 struct f2fs_inode_info *fi = F2FS_I(inode);
3265 struct f2fs_map_blocks map;
3266 pgoff_t m_next_extent;
3267 loff_t end;
3268 int err;
3269
3270 if (is_inode_flag_set(inode, FI_NO_EXTENT))
3271 return -EOPNOTSUPP;
3272
3273 map.m_lblk = 0;
3274 map.m_next_pgofs = NULL;
3275 map.m_next_extent = &m_next_extent;
3276 map.m_seg_type = NO_CHECK_TYPE;
f4f0b677 3277 map.m_may_create = false;
c4020b2d
CY		 3278 end = F2FS_I_SB(inode)->max_file_blocks;
3279
3280 while (map.m_lblk < end) {
3281 map.m_len = end - map.m_lblk;
3282
b2532c69 3283 down_write(&fi->i_gc_rwsem[WRITE]);
c4020b2d 3284 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE);
b2532c69 3285 up_write(&fi->i_gc_rwsem[WRITE]);
c4020b2d
CY		 3286 if (err)
3287 return err;
3288
3289 map.m_lblk = m_next_extent;
3290 }
3291
3292 return err;
3293}
3294
3295static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg)
3296{
3297 return f2fs_precache_extents(file_inode(filp));
3298}
3299
04f0b2ea
QS		 3300static int f2fs_ioc_resize_fs(struct file *filp, unsigned long arg)
3301{
3302 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
3303 __u64 block_count;
3304 int ret;
3305
3306 if (!capable(CAP_SYS_ADMIN))
3307 return -EPERM;
3308
3309 if (f2fs_readonly(sbi->sb))
3310 return -EROFS;
3311
3312 if (copy_from_user(&block_count, (void __user *)arg,
3313 sizeof(block_count)))
3314 return -EFAULT;
3315
3316 ret = f2fs_resize_fs(sbi, block_count);
3317
3318 return ret;
3319}
3320
95ae251f
EB		 3321static int f2fs_ioc_enable_verity(struct file *filp, unsigned long arg)
3322{
3323 struct inode *inode = file_inode(filp);
3324
3325 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3326
3327 if (!f2fs_sb_has_verity(F2FS_I_SB(inode))) {
3328 f2fs_warn(F2FS_I_SB(inode),
3329 "Can't enable fs-verity on inode %lu: the verity feature is not enabled on this filesystem.\n",
3330 inode->i_ino);
3331 return -EOPNOTSUPP;
3332 }
3333
3334 return fsverity_ioctl_enable(filp, (const void __user *)arg);
3335}
3336
3337static int f2fs_ioc_measure_verity(struct file *filp, unsigned long arg)
3338{
3339 if (!f2fs_sb_has_verity(F2FS_I_SB(file_inode(filp))))
3340 return -EOPNOTSUPP;
3341
3342 return fsverity_ioctl_measure(filp, (void __user *)arg);
3343}
3344
4507847c
CY		 3345static int f2fs_get_volume_name(struct file *filp, unsigned long arg)
3346{
3347 struct inode *inode = file_inode(filp);
3348 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3349 char *vbuf;
3350 int count;
3351 int err = 0;
3352
3353 vbuf = f2fs_kzalloc(sbi, MAX_VOLUME_NAME, GFP_KERNEL);
3354 if (!vbuf)
3355 return -ENOMEM;
3356
3357 down_read(&sbi->sb_lock);
3358 count = utf16s_to_utf8s(sbi->raw_super->volume_name,
3359 ARRAY_SIZE(sbi->raw_super->volume_name),
3360 UTF16_LITTLE_ENDIAN, vbuf, MAX_VOLUME_NAME);
3361 up_read(&sbi->sb_lock);
3362
3363 if (copy_to_user((char __user *)arg, vbuf,
3364 min(FSLABEL_MAX, count)))
3365 err = -EFAULT;
3366
3367 kvfree(vbuf);
3368 return err;
3369}
3370
3371static int f2fs_set_volume_name(struct file *filp, unsigned long arg)
3372{
3373 struct inode *inode = file_inode(filp);
3374 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3375 char *vbuf;
3376 int err = 0;
3377
3378 if (!capable(CAP_SYS_ADMIN))
3379 return -EPERM;
3380
3381 vbuf = strndup_user((const char __user *)arg, FSLABEL_MAX);
3382 if (IS_ERR(vbuf))
3383 return PTR_ERR(vbuf);
3384
3385 err = mnt_want_write_file(filp);
3386 if (err)
3387 goto out;
3388
3389 down_write(&sbi->sb_lock);
3390
3391 memset(sbi->raw_super->volume_name, 0,
3392 sizeof(sbi->raw_super->volume_name));
3393 utf8s_to_utf16s(vbuf, strlen(vbuf), UTF16_LITTLE_ENDIAN,
3394 sbi->raw_super->volume_name,
3395 ARRAY_SIZE(sbi->raw_super->volume_name));
3396
3397 err = f2fs_commit_super(sbi, false);
3398
3399 up_write(&sbi->sb_lock);
3400
3401 mnt_drop_write_file(filp);
3402out:
3403 kfree(vbuf);
3404 return err;
3405}
3406
439dfb10
CY		 3407static int f2fs_get_compress_blocks(struct file *filp, unsigned long arg)
3408{
3409 struct inode *inode = file_inode(filp);
3410 __u64 blocks;
3411
3412 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3413 return -EOPNOTSUPP;
3414
3415 if (!f2fs_compressed_file(inode))
3416 return -EINVAL;
3417
3418 blocks = F2FS_I(inode)->i_compr_blocks;
3419 return put_user(blocks, (u64 __user *)arg);
3420}
3421
52656e6c
JK		 3422long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
3423{
1f227a3e
JK		 3424 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
3425 return -EIO;
00e09c0b
CY		 3426 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(filp))))
3427 return -ENOSPC;
1f227a3e 3428
52656e6c
JK		 3429 switch (cmd) {
3430 case F2FS_IOC_GETFLAGS:
3431 return f2fs_ioc_getflags(filp, arg);
3432 case F2FS_IOC_SETFLAGS:
3433 return f2fs_ioc_setflags(filp, arg);
d49f3e89
CY		 3434 case F2FS_IOC_GETVERSION:
3435 return f2fs_ioc_getversion(filp, arg);
88b88a66
JK		 3436 case F2FS_IOC_START_ATOMIC_WRITE:
3437 return f2fs_ioc_start_atomic_write(filp);
3438 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
3439 return f2fs_ioc_commit_atomic_write(filp);
02a1335f
JK		 3440 case F2FS_IOC_START_VOLATILE_WRITE:
3441 return f2fs_ioc_start_volatile_write(filp);
1e84371f
JK		 3442 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
3443 return f2fs_ioc_release_volatile_write(filp);
3444 case F2FS_IOC_ABORT_VOLATILE_WRITE:
3445 return f2fs_ioc_abort_volatile_write(filp);
1abff93d
JK		 3446 case F2FS_IOC_SHUTDOWN:
3447 return f2fs_ioc_shutdown(filp, arg);
52656e6c
JK		 3448 case FITRIM:
3449 return f2fs_ioc_fitrim(filp, arg);
f424f664
JK		 3450 case F2FS_IOC_SET_ENCRYPTION_POLICY:
3451 return f2fs_ioc_set_encryption_policy(filp, arg);
3452 case F2FS_IOC_GET_ENCRYPTION_POLICY:
3453 return f2fs_ioc_get_encryption_policy(filp, arg);
3454 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
3455 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
8ce589c7
EB		 3456 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
3457 return f2fs_ioc_get_encryption_policy_ex(filp, arg);
3458 case FS_IOC_ADD_ENCRYPTION_KEY:
3459 return f2fs_ioc_add_encryption_key(filp, arg);
3460 case FS_IOC_REMOVE_ENCRYPTION_KEY:
3461 return f2fs_ioc_remove_encryption_key(filp, arg);
3462 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
3463 return f2fs_ioc_remove_encryption_key_all_users(filp, arg);
3464 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
3465 return f2fs_ioc_get_encryption_key_status(filp, arg);
ee446e1a
EB		 3466 case FS_IOC_GET_ENCRYPTION_NONCE:
3467 return f2fs_ioc_get_encryption_nonce(filp, arg);
c1c1b583
CY		 3468 case F2FS_IOC_GARBAGE_COLLECT:
3469 return f2fs_ioc_gc(filp, arg);
34dc77ad
JK		 3470 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
3471 return f2fs_ioc_gc_range(filp, arg);
456b88e4 3472 case F2FS_IOC_WRITE_CHECKPOINT:
059c0648 3473 return f2fs_ioc_write_checkpoint(filp, arg);
d323d005
CY		 3474 case F2FS_IOC_DEFRAGMENT:
3475 return f2fs_ioc_defragment(filp, arg);
4dd6f977
JK		 3476 case F2FS_IOC_MOVE_RANGE:
3477 return f2fs_ioc_move_range(filp, arg);
e066b83c
JK		 3478 case F2FS_IOC_FLUSH_DEVICE:
3479 return f2fs_ioc_flush_device(filp, arg);
e65ef207
JK		 3480 case F2FS_IOC_GET_FEATURES:
3481 return f2fs_ioc_get_features(filp, arg);
2c1d0305
CY		 3482 case F2FS_IOC_FSGETXATTR:
3483 return f2fs_ioc_fsgetxattr(filp, arg);
3484 case F2FS_IOC_FSSETXATTR:
3485 return f2fs_ioc_fssetxattr(filp, arg);
1ad71a27
JK		 3486 case F2FS_IOC_GET_PIN_FILE:
3487 return f2fs_ioc_get_pin_file(filp, arg);
3488 case F2FS_IOC_SET_PIN_FILE:
3489 return f2fs_ioc_set_pin_file(filp, arg);
c4020b2d
CY		 3490 case F2FS_IOC_PRECACHE_EXTENTS:
3491 return f2fs_ioc_precache_extents(filp, arg);
04f0b2ea
QS		 3492 case F2FS_IOC_RESIZE_FS:
3493 return f2fs_ioc_resize_fs(filp, arg);
95ae251f
EB		 3494 case FS_IOC_ENABLE_VERITY:
3495 return f2fs_ioc_enable_verity(filp, arg);
3496 case FS_IOC_MEASURE_VERITY:
3497 return f2fs_ioc_measure_verity(filp, arg);
4507847c
CY		 3498 case F2FS_IOC_GET_VOLUME_NAME:
3499 return f2fs_get_volume_name(filp, arg);
3500 case F2FS_IOC_SET_VOLUME_NAME:
3501 return f2fs_set_volume_name(filp, arg);
439dfb10
CY		 3502 case F2FS_IOC_GET_COMPRESS_BLOCKS:
3503 return f2fs_get_compress_blocks(filp, arg);
fbfa2cc5
JK		 3504 default:
3505 return -ENOTTY;
3506 }
3507}
3508
4c8ff709
CY		 3509static ssize_t f2fs_file_read_iter(struct kiocb *iocb, struct iov_iter *iter)
3510{
3511 struct file *file = iocb->ki_filp;
3512 struct inode *inode = file_inode(file);
3513
3514 if (!f2fs_is_compress_backend_ready(inode))
3515 return -EOPNOTSUPP;
3516
3517 return generic_file_read_iter(iocb, iter);
3518}
3519
fcc85a4d
JK		 3520static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
3521{
b439b103
JK		 3522 struct file *file = iocb->ki_filp;
3523 struct inode *inode = file_inode(file);
3524 ssize_t ret;
fcc85a4d 3525
126ce721
CY		 3526 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) {
3527 ret = -EIO;
3528 goto out;
3529 }
1f227a3e 3530
7bd29358
CY		 3531 if (!f2fs_is_compress_backend_ready(inode)) {
3532 ret = -EOPNOTSUPP;
3533 goto out;
3534 }
4c8ff709 3535
cb8434f1
GR		 3536 if (iocb->ki_flags & IOCB_NOWAIT) {
3537 if (!inode_trylock(inode)) {
126ce721
CY		 3538 ret = -EAGAIN;
3539 goto out;
3540 }
cb8434f1 3541 } else {
b91050a8
HL		 3542 inode_lock(inode);
3543 }
3544
b439b103
JK		 3545 ret = generic_write_checks(iocb, from);
3546 if (ret > 0) {
dc7a10dd
JK		 3547 bool preallocated = false;
3548 size_t target_size = 0;
dc91de78 3549 int err;
a7de6086 3550
dc91de78
JK		 3551 if (iov_iter_fault_in_readable(from, iov_iter_count(from)))
3552 set_inode_flag(inode, FI_NO_PREALLOC);
a7de6086 3553
d5d5f0c0
CX		 3554 if ((iocb->ki_flags & IOCB_NOWAIT)) {
3555 if (!f2fs_overwrite_io(inode, iocb->ki_pos,
b91050a8 3556 iov_iter_count(from)) ||
d5d5f0c0
CX		 3557 f2fs_has_inline_data(inode) ||
3558 f2fs_force_buffered_io(inode, iocb, from)) {
3559 clear_inode_flag(inode, FI_NO_PREALLOC);
3560 inode_unlock(inode);
3561 ret = -EAGAIN;
3562 goto out;
3563 }
47501f87
JK		 3564 goto write;
3565 }
dc7a10dd 3566
47501f87
JK		 3567 if (is_inode_flag_set(inode, FI_NO_PREALLOC))
3568 goto write;
3569
3570 if (iocb->ki_flags & IOCB_DIRECT) {
3571 /*
3572 * Convert inline data for Direct I/O before entering
3573 * f2fs_direct_IO().
3574 */
3575 err = f2fs_convert_inline_inode(inode);
3576 if (err)
3577 goto out_err;
3578 /*
3579 * If force_buffere_io() is true, we have to allocate
3580 * blocks all the time, since f2fs_direct_IO will fall
3581 * back to buffered IO.
3582 */
3583 if (!f2fs_force_buffered_io(inode, iocb, from) &&
3584 allow_outplace_dio(inode, iocb, from))
3585 goto write;
3586 }
3587 preallocated = true;
3588 target_size = iocb->ki_pos + iov_iter_count(from);
3589
3590 err = f2fs_preallocate_blocks(iocb, from);
3591 if (err) {
3592out_err:
3593 clear_inode_flag(inode, FI_NO_PREALLOC);
3594 inode_unlock(inode);
3595 ret = err;
3596 goto out;
9dfa1baf 3597 }
47501f87 3598write:
a7de6086 3599 ret = __generic_file_write_iter(iocb, from);
dc91de78 3600 clear_inode_flag(inode, FI_NO_PREALLOC);
b0af6d49 3601
dc7a10dd
JK		 3602 /* if we couldn't write data, we should deallocate blocks. */
3603 if (preallocated && i_size_read(inode) < target_size)
3604 f2fs_truncate(inode);
3605
b0af6d49
CY		 3606 if (ret > 0)
3607 f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret);
b439b103
JK		 3608 }
3609 inode_unlock(inode);
126ce721
CY		 3610out:
3611 trace_f2fs_file_write_iter(inode, iocb->ki_pos,
3612 iov_iter_count(from), ret);
e2592217
CH		 3613 if (ret > 0)
3614 ret = generic_write_sync(iocb, ret);
b439b103 3615 return ret;
fcc85a4d
JK		 3616}
3617
e9750824
NJ		 3618#ifdef CONFIG_COMPAT
3619long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
3620{
3621 switch (cmd) {
3622 case F2FS_IOC32_GETFLAGS:
3623 cmd = F2FS_IOC_GETFLAGS;
3624 break;
3625 case F2FS_IOC32_SETFLAGS:
3626 cmd = F2FS_IOC_SETFLAGS;
3627 break;
04ef4b62
CY		 3628 case F2FS_IOC32_GETVERSION:
3629 cmd = F2FS_IOC_GETVERSION;
3630 break;
3631 case F2FS_IOC_START_ATOMIC_WRITE:
3632 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
3633 case F2FS_IOC_START_VOLATILE_WRITE:
3634 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
3635 case F2FS_IOC_ABORT_VOLATILE_WRITE:
3636 case F2FS_IOC_SHUTDOWN:
314999dc 3637 case FITRIM:
04ef4b62
CY		 3638 case F2FS_IOC_SET_ENCRYPTION_POLICY:
3639 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
3640 case F2FS_IOC_GET_ENCRYPTION_POLICY:
8ce589c7
EB		 3641 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
3642 case FS_IOC_ADD_ENCRYPTION_KEY:
3643 case FS_IOC_REMOVE_ENCRYPTION_KEY:
3644 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
3645 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
ee446e1a 3646 case FS_IOC_GET_ENCRYPTION_NONCE:
04ef4b62 3647 case F2FS_IOC_GARBAGE_COLLECT:
34dc77ad 3648 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
04ef4b62
CY		 3649 case F2FS_IOC_WRITE_CHECKPOINT:
3650 case F2FS_IOC_DEFRAGMENT:
4dd6f977 3651 case F2FS_IOC_MOVE_RANGE:
e066b83c 3652 case F2FS_IOC_FLUSH_DEVICE:
e65ef207 3653 case F2FS_IOC_GET_FEATURES:
2c1d0305
CY		 3654 case F2FS_IOC_FSGETXATTR:
3655 case F2FS_IOC_FSSETXATTR:
1ad71a27
JK		 3656 case F2FS_IOC_GET_PIN_FILE:
3657 case F2FS_IOC_SET_PIN_FILE:
c4020b2d 3658 case F2FS_IOC_PRECACHE_EXTENTS:
04f0b2ea 3659 case F2FS_IOC_RESIZE_FS:
95ae251f
EB		 3660 case FS_IOC_ENABLE_VERITY:
3661 case FS_IOC_MEASURE_VERITY:
4507847c
CY		 3662 case F2FS_IOC_GET_VOLUME_NAME:
3663 case F2FS_IOC_SET_VOLUME_NAME:
439dfb10 3664 case F2FS_IOC_GET_COMPRESS_BLOCKS:
4dd6f977 3665 break;
e9750824
NJ		 3666 default:
3667 return -ENOIOCTLCMD;
3668 }
3669 return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
3670}
3671#endif
3672
fbfa2cc5 3673const struct file_operations f2fs_file_operations = {
267378d4 3674 .llseek = f2fs_llseek,
4c8ff709 3675 .read_iter = f2fs_file_read_iter,
fcc85a4d
JK		 3676 .write_iter = f2fs_file_write_iter,
3677 .open = f2fs_file_open,
12662234 3678 .release = f2fs_release_file,
fbfa2cc5 3679 .mmap = f2fs_file_mmap,
7a10f017 3680 .flush = f2fs_file_flush,
fbfa2cc5
JK		 3681 .fsync = f2fs_sync_file,
3682 .fallocate = f2fs_fallocate,
3683 .unlocked_ioctl = f2fs_ioctl,
e9750824
NJ		 3684#ifdef CONFIG_COMPAT
3685 .compat_ioctl = f2fs_compat_ioctl,
3686#endif
fbfa2cc5 3687 .splice_read = generic_file_splice_read,
8d020765 3688 .splice_write = iter_file_splice_write,
fbfa2cc5 3689};
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