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exec: handle idmapped mounts
[linux-block.git] / fs / f2fs / file.c
CommitLineData
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>
9af84648 24#include <linux/sched/signal.h>
fbfa2cc5
JK		 25
26#include "f2fs.h"
27#include "node.h"
28#include "segment.h"
29#include "xattr.h"
30#include "acl.h"
c1c1b583 31#include "gc.h"
db9f7c1a 32#include "trace.h"
a2a4a7e4 33#include <trace/events/f2fs.h>
fa4320ce 34#include <uapi/linux/f2fs.h>
fbfa2cc5 35
ea4d479b 36static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf)
5a3a2d83
QS		 37{
38 struct inode *inode = file_inode(vmf->vma->vm_file);
ea4d479b 39 vm_fault_t ret;
5a3a2d83
QS		 40
41 down_read(&F2FS_I(inode)->i_mmap_sem);
ea4d479b 42 ret = filemap_fault(vmf);
5a3a2d83
QS		 43 up_read(&F2FS_I(inode)->i_mmap_sem);
44
8b83ac81
CY		 45 if (!ret)
46 f2fs_update_iostat(F2FS_I_SB(inode), APP_MAPPED_READ_IO,
47 F2FS_BLKSIZE);
48
d7648343
CY		 49 trace_f2fs_filemap_fault(inode, vmf->pgoff, (unsigned long)ret);
50
ea4d479b 51 return ret;
5a3a2d83
QS		 52}
53
ea4d479b 54static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf)
fbfa2cc5
JK		 55{
56 struct page *page = vmf->page;
11bac800 57 struct inode *inode = file_inode(vmf->vma->vm_file);
4081363f 58 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
bdf03299 59 struct dnode_of_data dn;
4c8ff709
CY		 60 bool need_alloc = true;
61 int err = 0;
fbfa2cc5 62
1f227a3e
JK		 63 if (unlikely(f2fs_cp_error(sbi))) {
64 err = -EIO;
65 goto err;
66 }
67
00e09c0b
CY		 68 if (!f2fs_is_checkpoint_ready(sbi)) {
69 err = -ENOSPC;
955ebcd3 70 goto err;
00e09c0b 71 }
1f227a3e 72
4c8ff709
CY		 73#ifdef CONFIG_F2FS_FS_COMPRESSION
74 if (f2fs_compressed_file(inode)) {
75 int ret = f2fs_is_compressed_cluster(inode, page->index);
76
77 if (ret < 0) {
78 err = ret;
79 goto err;
80 } else if (ret) {
81 if (ret < F2FS_I(inode)->i_cluster_size) {
82 err = -EAGAIN;
83 goto err;
84 }
85 need_alloc = false;
86 }
87 }
88#endif
bdf03299 89 /* should do out of any locked page */
4c8ff709
CY		 90 if (need_alloc)
91 f2fs_balance_fs(sbi, true);
bdf03299 92
fbfa2cc5 93 sb_start_pagefault(inode->i_sb);
b3d208f9
JK		 94
95 f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
b067ba1f 96
11bac800 97 file_update_time(vmf->vma->vm_file);
5a3a2d83 98 down_read(&F2FS_I(inode)->i_mmap_sem);
fbfa2cc5 99 lock_page(page);
6bacf52f 100 if (unlikely(page->mapping != inode->i_mapping ||
9851e6e1 101 page_offset(page) > i_size_read(inode) ||
6bacf52f 102 !PageUptodate(page))) {
fbfa2cc5
JK		 103 unlock_page(page);
104 err = -EFAULT;
5a3a2d83 105 goto out_sem;
fbfa2cc5
JK		 106 }
107
4c8ff709
CY		 108 if (need_alloc) {
109 /* block allocation */
0ef81833 110 f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true);
4c8ff709
CY		 111 set_new_dnode(&dn, inode, NULL, NULL, 0);
112 err = f2fs_get_block(&dn, page->index);
113 f2fs_put_dnode(&dn);
0ef81833 114 f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false);
39a86958
CY		 115 }
116
06c7540f
CY		 117#ifdef CONFIG_F2FS_FS_COMPRESSION
118 if (!need_alloc) {
119 set_new_dnode(&dn, inode, NULL, NULL, 0);
120 err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE);
121 f2fs_put_dnode(&dn);
122 }
123#endif
124 if (err) {
125 unlock_page(page);
126 goto out_sem;
39a86958
CY		 127 }
128
bae0ee7a 129 f2fs_wait_on_page_writeback(page, DATA, false, true);
39a86958
CY		 130
131 /* wait for GCed page writeback via META_MAPPING */
132 f2fs_wait_on_block_writeback(inode, dn.data_blkaddr);
133
fbfa2cc5
JK		 134 /*
135 * check to see if the page is mapped already (no holes)
136 */
137 if (PageMappedToDisk(page))
39a86958 138 goto out_sem;
fbfa2cc5
JK		 139
140 /* page is wholly or partially inside EOF */
09cbfeaf 141 if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
9edcdabf 142 i_size_read(inode)) {
193bea1d 143 loff_t offset;
f11e98bd 144
09cbfeaf
KS		 145 offset = i_size_read(inode) & ~PAGE_MASK;
146 zero_user_segment(page, offset, PAGE_SIZE);
fbfa2cc5
JK		 147 }
148 set_page_dirty(page);
237c0790
JK		 149 if (!PageUptodate(page))
150 SetPageUptodate(page);
fbfa2cc5 151
b0af6d49 152 f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE);
c75f2feb 153 f2fs_update_time(sbi, REQ_TIME);
b0af6d49 154
e943a10d 155 trace_f2fs_vm_page_mkwrite(page, DATA);
5a3a2d83
QS		 156out_sem:
157 up_read(&F2FS_I(inode)->i_mmap_sem);
39a86958 158
fbfa2cc5 159 sb_end_pagefault(inode->i_sb);
1f227a3e 160err:
fbfa2cc5
JK		 161 return block_page_mkwrite_return(err);
162}
163
164static const struct vm_operations_struct f2fs_file_vm_ops = {
5a3a2d83 165 .fault = f2fs_filemap_fault,
f1820361 166 .map_pages = filemap_map_pages,
692bb55d 167 .page_mkwrite = f2fs_vm_page_mkwrite,
fbfa2cc5
JK		 168};
169
354a3399
JK		 170static int get_parent_ino(struct inode *inode, nid_t *pino)
171{
172 struct dentry *dentry;
173
84c9c2de
EB		 174 /*
175 * Make sure to get the non-deleted alias. The alias associated with
176 * the open file descriptor being fsync()'ed may be deleted already.
177 */
178 dentry = d_find_alias(inode);
354a3399
JK		 179 if (!dentry)
180 return 0;
181
f0947e5c
JK		 182 *pino = parent_ino(dentry);
183 dput(dentry);
354a3399
JK		 184 return 1;
185}
186
a5fd5050 187static inline enum cp_reason_type need_do_checkpoint(struct inode *inode)
9d1589ef 188{
4081363f 189 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
a5fd5050 190 enum cp_reason_type cp_reason = CP_NO_NEEDED;
9d1589ef 191
a5fd5050
CY		 192 if (!S_ISREG(inode->i_mode))
193 cp_reason = CP_NON_REGULAR;
4c8ff709
CY		 194 else if (f2fs_compressed_file(inode))
195 cp_reason = CP_COMPRESSED;
a5fd5050
CY		 196 else if (inode->i_nlink != 1)
197 cp_reason = CP_HARDLINK;
bbf156f7 198 else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
a5fd5050 199 cp_reason = CP_SB_NEED_CP;
9d1589ef 200 else if (file_wrong_pino(inode))
a5fd5050 201 cp_reason = CP_WRONG_PINO;
4d57b86d 202 else if (!f2fs_space_for_roll_forward(sbi))
a5fd5050 203 cp_reason = CP_NO_SPC_ROLL;
4d57b86d 204 else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
a5fd5050 205 cp_reason = CP_NODE_NEED_CP;
d5053a34 206 else if (test_opt(sbi, FASTBOOT))
a5fd5050 207 cp_reason = CP_FASTBOOT_MODE;
63189b78 208 else if (F2FS_OPTION(sbi).active_logs == 2)
a5fd5050 209 cp_reason = CP_SPEC_LOG_NUM;
63189b78 210 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT &&
4d57b86d
CY		 211 f2fs_need_dentry_mark(sbi, inode->i_ino) &&
212 f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino,
213 TRANS_DIR_INO))
0a007b97 214 cp_reason = CP_RECOVER_DIR;
9d1589ef 215
a5fd5050 216 return cp_reason;
9d1589ef
CY		 217}
218
9c7bb702
CL		 219static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
220{
221 struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
222 bool ret = false;
223 /* But we need to avoid that there are some inode updates */
4d57b86d 224 if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino))
9c7bb702
CL		 225 ret = true;
226 f2fs_put_page(i, 0);
227 return ret;
228}
229
51455b19
CL		 230static void try_to_fix_pino(struct inode *inode)
231{
232 struct f2fs_inode_info *fi = F2FS_I(inode);
233 nid_t pino;
234
235 down_write(&fi->i_sem);
51455b19
CL		 236 if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
237 get_parent_ino(inode, &pino)) {
205b9822 238 f2fs_i_pino_write(inode, pino);
51455b19 239 file_got_pino(inode);
51455b19 240 }
ee6d182f 241 up_write(&fi->i_sem);
51455b19
CL		 242}
243
608514de
JK		 244static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
245 int datasync, bool atomic)
fbfa2cc5
JK		 246{
247 struct inode *inode = file->f_mapping->host;
4081363f 248 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2403c155 249 nid_t ino = inode->i_ino;
fbfa2cc5 250 int ret = 0;
a5fd5050 251 enum cp_reason_type cp_reason = 0;
fbfa2cc5 252 struct writeback_control wbc = {
c81bf1c8 253 .sync_mode = WB_SYNC_ALL,
fbfa2cc5
JK		 254 .nr_to_write = LONG_MAX,
255 .for_reclaim = 0,
256 };
50fa53ec 257 unsigned int seq_id = 0;
fbfa2cc5 258
4354994f
DR		 259 if (unlikely(f2fs_readonly(inode->i_sb) ||
260 is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1fa95b0b
NJ		 261 return 0;
262
a2a4a7e4 263 trace_f2fs_sync_file_enter(inode);
ea1aa12c 264
b61ac5b7
YH		 265 if (S_ISDIR(inode->i_mode))
266 goto go_write;
267
ea1aa12c 268 /* if fdatasync is triggered, let's do in-place-update */
c46a155b 269 if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
91942321 270 set_inode_flag(inode, FI_NEED_IPU);
3b49c9a1 271 ret = file_write_and_wait_range(file, start, end);
91942321 272 clear_inode_flag(inode, FI_NEED_IPU);
c1ce1b02 273
a2a4a7e4 274 if (ret) {
a5fd5050 275 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
fbfa2cc5 276 return ret;
a2a4a7e4 277 }
fbfa2cc5 278
9c7bb702 279 /* if the inode is dirty, let's recover all the time */
281518c6 280 if (!f2fs_skip_inode_update(inode, datasync)) {
2286c020 281 f2fs_write_inode(inode, NULL);
9c7bb702
CL		 282 goto go_write;
283 }
284
6d99ba41
JK		 285 /*
286 * if there is no written data, don't waste time to write recovery info.
287 */
91942321 288 if (!is_inode_flag_set(inode, FI_APPEND_WRITE) &&
4d57b86d 289 !f2fs_exist_written_data(sbi, ino, APPEND_INO)) {
19c9c466 290
9c7bb702
CL		 291 /* it may call write_inode just prior to fsync */
292 if (need_inode_page_update(sbi, ino))
19c9c466 293 goto go_write;
19c9c466 294
91942321 295 if (is_inode_flag_set(inode, FI_UPDATE_WRITE) ||
4d57b86d 296 f2fs_exist_written_data(sbi, ino, UPDATE_INO))
6d99ba41
JK		 297 goto flush_out;
298 goto out;
299 }
19c9c466 300go_write:
e5d2385e
JK		 301 /*
302 * Both of fdatasync() and fsync() are able to be recovered from
303 * sudden-power-off.
304 */
91942321 305 down_read(&F2FS_I(inode)->i_sem);
a5fd5050 306 cp_reason = need_do_checkpoint(inode);
91942321 307 up_read(&F2FS_I(inode)->i_sem);
d928bfbf 308
a5fd5050 309 if (cp_reason) {
fbfa2cc5
JK		 310 /* all the dirty node pages should be flushed for POR */
311 ret = f2fs_sync_fs(inode->i_sb, 1);
d928bfbf 312
51455b19
CL		 313 /*
314 * We've secured consistency through sync_fs. Following pino
315 * will be used only for fsynced inodes after checkpoint.
316 */
317 try_to_fix_pino(inode);
91942321
JK		 318 clear_inode_flag(inode, FI_APPEND_WRITE);
319 clear_inode_flag(inode, FI_UPDATE_WRITE);
51455b19
CL		 320 goto out;
321 }
88bd02c9 322sync_nodes:
c29fd0c0 323 atomic_inc(&sbi->wb_sync_req[NODE]);
50fa53ec 324 ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic, &seq_id);
c29fd0c0 325 atomic_dec(&sbi->wb_sync_req[NODE]);
c267ec15
JK		 326 if (ret)
327 goto out;
51455b19 328
871f599f 329 /* if cp_error was enabled, we should avoid infinite loop */
6d5a1495
CY		 330 if (unlikely(f2fs_cp_error(sbi))) {
331 ret = -EIO;
871f599f 332 goto out;
6d5a1495 333 }
871f599f 334
4d57b86d 335 if (f2fs_need_inode_block_update(sbi, ino)) {
7c45729a 336 f2fs_mark_inode_dirty_sync(inode, true);
51455b19
CL		 337 f2fs_write_inode(inode, NULL);
338 goto sync_nodes;
fbfa2cc5 339 }
51455b19 340
b6a245eb
JK		 341 /*
342 * If it's atomic_write, it's just fine to keep write ordering. So
343 * here we don't need to wait for node write completion, since we use
344 * node chain which serializes node blocks. If one of node writes are
345 * reordered, we can see simply broken chain, resulting in stopping
346 * roll-forward recovery. It means we'll recover all or none node blocks
347 * given fsync mark.
348 */
349 if (!atomic) {
50fa53ec 350 ret = f2fs_wait_on_node_pages_writeback(sbi, seq_id);
b6a245eb
JK		 351 if (ret)
352 goto out;
353 }
51455b19
CL		 354
355 /* once recovery info is written, don't need to tack this */
4d57b86d 356 f2fs_remove_ino_entry(sbi, ino, APPEND_INO);
91942321 357 clear_inode_flag(inode, FI_APPEND_WRITE);
51455b19 358flush_out:
d6290814 359 if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER)
39d787be 360 ret = f2fs_issue_flush(sbi, inode->i_ino);
3f06252f 361 if (!ret) {
4d57b86d 362 f2fs_remove_ino_entry(sbi, ino, UPDATE_INO);
3f06252f 363 clear_inode_flag(inode, FI_UPDATE_WRITE);
4d57b86d 364 f2fs_remove_ino_entry(sbi, ino, FLUSH_INO);
3f06252f 365 }
d0239e1b 366 f2fs_update_time(sbi, REQ_TIME);
fbfa2cc5 367out:
a5fd5050 368 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
05ca3632 369 f2fs_trace_ios(NULL, 1);
fbfa2cc5
JK		 370 return ret;
371}
372
608514de
JK		 373int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
374{
1f227a3e
JK		 375 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
376 return -EIO;
608514de
JK		 377 return f2fs_do_sync_file(file, start, end, datasync, false);
378}
379
4cb03fec
MWO		 380static bool __found_offset(struct address_space *mapping, block_t blkaddr,
381 pgoff_t index, int whence)
7f7670fe
JK		 382{
383 switch (whence) {
384 case SEEK_DATA:
4cb03fec
MWO		 385 if (__is_valid_data_blkaddr(blkaddr))
386 return true;
387 if (blkaddr == NEW_ADDR &&
388 xa_get_mark(&mapping->i_pages, index, PAGECACHE_TAG_DIRTY))
7f7670fe
JK		 389 return true;
390 break;
391 case SEEK_HOLE:
392 if (blkaddr == NULL_ADDR)
393 return true;
394 break;
395 }
396 return false;
397}
398
267378d4
CY		 399static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
400{
401 struct inode *inode = file->f_mapping->host;
402 loff_t maxbytes = inode->i_sb->s_maxbytes;
403 struct dnode_of_data dn;
4cb03fec 404 pgoff_t pgofs, end_offset;
7f7670fe
JK		 405 loff_t data_ofs = offset;
406 loff_t isize;
267378d4
CY		 407 int err = 0;
408
5955102c 409 inode_lock(inode);
267378d4
CY		 410
411 isize = i_size_read(inode);
412 if (offset >= isize)
413 goto fail;
414
415 /* handle inline data case */
7a6e59d7
CY		 416 if (f2fs_has_inline_data(inode)) {
417 if (whence == SEEK_HOLE) {
418 data_ofs = isize;
419 goto found;
420 } else if (whence == SEEK_DATA) {
421 data_ofs = offset;
422 goto found;
423 }
267378d4
CY		 424 }
425
09cbfeaf 426 pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
267378d4 427
09cbfeaf 428 for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
267378d4 429 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 430 err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
267378d4
CY		 431 if (err && err != -ENOENT) {
432 goto fail;
433 } else if (err == -ENOENT) {
e1c42045 434 /* direct node does not exists */
267378d4 435 if (whence == SEEK_DATA) {
4d57b86d 436 pgofs = f2fs_get_next_page_offset(&dn, pgofs);
267378d4
CY		 437 continue;
438 } else {
439 goto found;
440 }
441 }
442
81ca7350 443 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
267378d4
CY		 444
445 /* find data/hole in dnode block */
446 for (; dn.ofs_in_node < end_offset;
447 dn.ofs_in_node++, pgofs++,
09cbfeaf 448 data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
267378d4 449 block_t blkaddr;
f11e98bd 450
a2ced1ce 451 blkaddr = f2fs_data_blkaddr(&dn);
267378d4 452
c9b60788
CY		 453 if (__is_valid_data_blkaddr(blkaddr) &&
454 !f2fs_is_valid_blkaddr(F2FS_I_SB(inode),
93770ab7 455 blkaddr, DATA_GENERIC_ENHANCE)) {
c9b60788
CY		 456 f2fs_put_dnode(&dn);
457 goto fail;
458 }
459
4cb03fec 460 if (__found_offset(file->f_mapping, blkaddr,
e1da7872 461 pgofs, whence)) {
267378d4
CY		 462 f2fs_put_dnode(&dn);
463 goto found;
464 }
465 }
466 f2fs_put_dnode(&dn);
467 }
468
469 if (whence == SEEK_DATA)
470 goto fail;
267378d4 471found:
fe369bc8
JK		 472 if (whence == SEEK_HOLE && data_ofs > isize)
473 data_ofs = isize;
5955102c 474 inode_unlock(inode);
267378d4
CY		 475 return vfs_setpos(file, data_ofs, maxbytes);
476fail:
5955102c 477 inode_unlock(inode);
267378d4
CY		 478 return -ENXIO;
479}
480
481static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
482{
483 struct inode *inode = file->f_mapping->host;
484 loff_t maxbytes = inode->i_sb->s_maxbytes;
485
486 switch (whence) {
487 case SEEK_SET:
488 case SEEK_CUR:
489 case SEEK_END:
490 return generic_file_llseek_size(file, offset, whence,
491 maxbytes, i_size_read(inode));
492 case SEEK_DATA:
493 case SEEK_HOLE:
0b4c5afd
JK		 494 if (offset < 0)
495 return -ENXIO;
267378d4
CY		 496 return f2fs_seek_block(file, offset, whence);
497 }
498
499 return -EINVAL;
500}
501
fbfa2cc5
JK		 502static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
503{
b3d208f9 504 struct inode *inode = file_inode(file);
b9d777b8 505 int err;
b3d208f9 506
1f227a3e
JK		 507 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
508 return -EIO;
509
4c8ff709
CY		 510 if (!f2fs_is_compress_backend_ready(inode))
511 return -EOPNOTSUPP;
512
b3d208f9 513 /* we don't need to use inline_data strictly */
b9d777b8
JK		 514 err = f2fs_convert_inline_inode(inode);
515 if (err)
516 return err;
b3d208f9 517
fbfa2cc5
JK		 518 file_accessed(file);
519 vma->vm_ops = &f2fs_file_vm_ops;
4c8ff709 520 set_inode_flag(inode, FI_MMAP_FILE);
fbfa2cc5
JK		 521 return 0;
522}
523
fcc85a4d
JK		 524static int f2fs_file_open(struct inode *inode, struct file *filp)
525{
2e168c82 526 int err = fscrypt_file_open(inode, filp);
fcc85a4d 527
95ae251f
EB		 528 if (err)
529 return err;
530
4c8ff709
CY		 531 if (!f2fs_is_compress_backend_ready(inode))
532 return -EOPNOTSUPP;
533
95ae251f 534 err = fsverity_file_open(inode, filp);
2e168c82
EB		 535 if (err)
536 return err;
b91050a8
HL		 537
538 filp->f_mode |= FMODE_NOWAIT;
539
0abd675e 540 return dquot_file_open(inode, filp);
fcc85a4d
JK		 541}
542
4d57b86d 543void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count)
fbfa2cc5 544{
4081363f 545 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
fbfa2cc5 546 struct f2fs_node *raw_node;
19b2c30d 547 int nr_free = 0, ofs = dn->ofs_in_node, len = count;
fbfa2cc5 548 __le32 *addr;
7a2af766 549 int base = 0;
4c8ff709
CY		 550 bool compressed_cluster = false;
551 int cluster_index = 0, valid_blocks = 0;
552 int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
c2759eba 553 bool released = !atomic_read(&F2FS_I(dn->inode)->i_compr_blocks);
7a2af766
CY		 554
555 if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode))
556 base = get_extra_isize(dn->inode);
fbfa2cc5 557
45590710 558 raw_node = F2FS_NODE(dn->node_page);
7a2af766 559 addr = blkaddr_in_node(raw_node) + base + ofs;
fbfa2cc5 560
4c8ff709
CY		 561 /* Assumption: truncateion starts with cluster */
562 for (; count > 0; count--, addr++, dn->ofs_in_node++, cluster_index++) {
fbfa2cc5 563 block_t blkaddr = le32_to_cpu(*addr);
f11e98bd 564
4c8ff709
CY		 565 if (f2fs_compressed_file(dn->inode) &&
566 !(cluster_index & (cluster_size - 1))) {
567 if (compressed_cluster)
568 f2fs_i_compr_blocks_update(dn->inode,
569 valid_blocks, false);
570 compressed_cluster = (blkaddr == COMPRESS_ADDR);
571 valid_blocks = 0;
572 }
573
fbfa2cc5
JK		 574 if (blkaddr == NULL_ADDR)
575 continue;
576
e1509cf2 577 dn->data_blkaddr = NULL_ADDR;
4d57b86d 578 f2fs_set_data_blkaddr(dn);
c9b60788 579
4c8ff709
CY		 580 if (__is_valid_data_blkaddr(blkaddr)) {
581 if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
93770ab7 582 DATA_GENERIC_ENHANCE))
4c8ff709
CY		 583 continue;
584 if (compressed_cluster)
585 valid_blocks++;
586 }
c9b60788 587
3c6c2beb 588 if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page))
91942321 589 clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN);
4c8ff709
CY		 590
591 f2fs_invalidate_blocks(sbi, blkaddr);
ef8d563f
CY		 592
593 if (!released || blkaddr != COMPRESS_ADDR)
594 nr_free++;
fbfa2cc5 595 }
19b2c30d 596
4c8ff709
CY		 597 if (compressed_cluster)
598 f2fs_i_compr_blocks_update(dn->inode, valid_blocks, false);
599
fbfa2cc5 600 if (nr_free) {
19b2c30d
CY		 601 pgoff_t fofs;
602 /*
603 * once we invalidate valid blkaddr in range [ofs, ofs + count],
604 * we will invalidate all blkaddr in the whole range.
605 */
4d57b86d 606 fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page),
81ca7350 607 dn->inode) + ofs;
19b2c30d 608 f2fs_update_extent_cache_range(dn, fofs, 0, len);
d7cc950b 609 dec_valid_block_count(sbi, dn->inode, nr_free);
fbfa2cc5
JK		 610 }
611 dn->ofs_in_node = ofs;
51dd6249 612
d0239e1b 613 f2fs_update_time(sbi, REQ_TIME);
51dd6249
NJ		 614 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
615 dn->ofs_in_node, nr_free);
fbfa2cc5
JK		 616}
617
4d57b86d 618void f2fs_truncate_data_blocks(struct dnode_of_data *dn)
fbfa2cc5 619{
d02a6e61 620 f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK(dn->inode));
fbfa2cc5
JK		 621}
622
0bfcfcca 623static int truncate_partial_data_page(struct inode *inode, u64 from,
43f3eae1 624 bool cache_only)
fbfa2cc5 625{
193bea1d 626 loff_t offset = from & (PAGE_SIZE - 1);
09cbfeaf 627 pgoff_t index = from >> PAGE_SHIFT;
43f3eae1 628 struct address_space *mapping = inode->i_mapping;
fbfa2cc5
JK		 629 struct page *page;
630
43f3eae1 631 if (!offset && !cache_only)
b3d208f9 632 return 0;
fbfa2cc5 633
43f3eae1 634 if (cache_only) {
34b5d5c2 635 page = find_lock_page(mapping, index);
43f3eae1
JK		 636 if (page && PageUptodate(page))
637 goto truncate_out;
638 f2fs_put_page(page, 1);
b3d208f9 639 return 0;
43f3eae1 640 }
fbfa2cc5 641
4d57b86d 642 page = f2fs_get_lock_data_page(inode, index, true);
43f3eae1 643 if (IS_ERR(page))
a78aaa2c 644 return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
43f3eae1 645truncate_out:
bae0ee7a 646 f2fs_wait_on_page_writeback(page, DATA, true, true);
09cbfeaf 647 zero_user(page, offset, PAGE_SIZE - offset);
a9bcf9bc
JK		 648
649 /* An encrypted inode should have a key and truncate the last page. */
62230e0d 650 f2fs_bug_on(F2FS_I_SB(inode), cache_only && IS_ENCRYPTED(inode));
a9bcf9bc 651 if (!cache_only)
0bfcfcca 652 set_page_dirty(page);
fbfa2cc5 653 f2fs_put_page(page, 1);
b3d208f9 654 return 0;
fbfa2cc5
JK		 655}
656
3265d3db 657int f2fs_do_truncate_blocks(struct inode *inode, u64 from, bool lock)
fbfa2cc5 658{
4081363f 659 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5
JK		 660 struct dnode_of_data dn;
661 pgoff_t free_from;
9ffe0fb5 662 int count = 0, err = 0;
b3d208f9 663 struct page *ipage;
0bfcfcca 664 bool truncate_page = false;
fbfa2cc5 665
51dd6249
NJ		 666 trace_f2fs_truncate_blocks_enter(inode, from);
667
df033caf 668 free_from = (pgoff_t)F2FS_BLK_ALIGN(from);
fbfa2cc5 669
09210c97
CY		 670 if (free_from >= sbi->max_file_blocks)
671 goto free_partial;
672
764aa3e9 673 if (lock)
c42d28ce 674 f2fs_lock_op(sbi);
9ffe0fb5 675
4d57b86d 676 ipage = f2fs_get_node_page(sbi, inode->i_ino);
b3d208f9
JK		 677 if (IS_ERR(ipage)) {
678 err = PTR_ERR(ipage);
679 goto out;
680 }
681
682 if (f2fs_has_inline_data(inode)) {
4d57b86d 683 f2fs_truncate_inline_inode(inode, ipage, from);
b3d208f9 684 f2fs_put_page(ipage, 1);
0bfcfcca 685 truncate_page = true;
b3d208f9
JK		 686 goto out;
687 }
688
689 set_new_dnode(&dn, inode, ipage, NULL, 0);
4d57b86d 690 err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
fbfa2cc5
JK		 691 if (err) {
692 if (err == -ENOENT)
693 goto free_next;
b3d208f9 694 goto out;
1ce86bf6
JK		 695 }
696
81ca7350 697 count = ADDRS_PER_PAGE(dn.node_page, inode);
fbfa2cc5
JK		 698
699 count -= dn.ofs_in_node;
9850cf4a 700 f2fs_bug_on(sbi, count < 0);
39936837 701
fbfa2cc5 702 if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
4d57b86d 703 f2fs_truncate_data_blocks_range(&dn, count);
fbfa2cc5
JK		 704 free_from += count;
705 }
706
707 f2fs_put_dnode(&dn);
708free_next:
4d57b86d 709 err = f2fs_truncate_inode_blocks(inode, free_from);
764d2c80
JK		 710out:
711 if (lock)
c42d28ce 712 f2fs_unlock_op(sbi);
09210c97 713free_partial:
b3d208f9
JK		 714 /* lastly zero out the first data page */
715 if (!err)
0bfcfcca 716 err = truncate_partial_data_page(inode, from, truncate_page);
fbfa2cc5 717
51dd6249 718 trace_f2fs_truncate_blocks_exit(inode, err);
fbfa2cc5
JK		 719 return err;
720}
721
4c8ff709
CY		 722int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock)
723{
724 u64 free_from = from;
3265d3db 725 int err;
4c8ff709 726
3265d3db 727#ifdef CONFIG_F2FS_FS_COMPRESSION
4c8ff709
CY		 728 /*
729 * for compressed file, only support cluster size
730 * aligned truncation.
731 */
4fec3fc0
CY		 732 if (f2fs_compressed_file(inode))
733 free_from = round_up(from,
734 F2FS_I(inode)->i_cluster_size << PAGE_SHIFT);
3265d3db
CY		 735#endif
736
737 err = f2fs_do_truncate_blocks(inode, free_from, lock);
738 if (err)
739 return err;
740
741#ifdef CONFIG_F2FS_FS_COMPRESSION
17d7648d 742 if (from != free_from) {
3265d3db 743 err = f2fs_truncate_partial_cluster(inode, from, lock);
17d7648d
CY		 744 if (err)
745 return err;
746 }
3265d3db 747#endif
4c8ff709 748
17d7648d 749 return 0;
4c8ff709
CY		 750}
751
9a449e9c 752int f2fs_truncate(struct inode *inode)
fbfa2cc5 753{
b0154891
CY		 754 int err;
755
1f227a3e
JK		 756 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
757 return -EIO;
758
fbfa2cc5
JK		 759 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
760 S_ISLNK(inode->i_mode)))
b0154891 761 return 0;
fbfa2cc5 762
51dd6249
NJ		 763 trace_f2fs_truncate(inode);
764
14b44d23 765 if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) {
c45d6002 766 f2fs_show_injection_info(F2FS_I_SB(inode), FAULT_TRUNCATE);
14b44d23
JK		 767 return -EIO;
768 }
7fa750a1 769
92dffd01 770 /* we should check inline_data size */
b9d777b8 771 if (!f2fs_may_inline_data(inode)) {
b0154891
CY		 772 err = f2fs_convert_inline_inode(inode);
773 if (err)
774 return err;
92dffd01
JK		 775 }
776
c42d28ce 777 err = f2fs_truncate_blocks(inode, i_size_read(inode), true);
b0154891
CY		 778 if (err)
779 return err;
780
078cd827 781 inode->i_mtime = inode->i_ctime = current_time(inode);
7c45729a 782 f2fs_mark_inode_dirty_sync(inode, false);
b0154891 783 return 0;
fbfa2cc5
JK		 784}
785
a528d35e 786int f2fs_getattr(const struct path *path, struct kstat *stat,
1c6d8ee4 787 u32 request_mask, unsigned int query_flags)
fbfa2cc5 788{
a528d35e 789 struct inode *inode = d_inode(path->dentry);
1c6d8ee4 790 struct f2fs_inode_info *fi = F2FS_I(inode);
1c1d35df 791 struct f2fs_inode *ri;
1c6d8ee4
CY		 792 unsigned int flags;
793
1c1d35df 794 if (f2fs_has_extra_attr(inode) &&
7beb01f7 795 f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
1c1d35df
CY		 796 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
797 stat->result_mask |= STATX_BTIME;
798 stat->btime.tv_sec = fi->i_crtime.tv_sec;
799 stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
800 }
801
36098557 802 flags = fi->i_flags;
fd26725f
CY		 803 if (flags & F2FS_COMPR_FL)
804 stat->attributes |= STATX_ATTR_COMPRESSED;
59c84408 805 if (flags & F2FS_APPEND_FL)
1c6d8ee4 806 stat->attributes |= STATX_ATTR_APPEND;
62230e0d 807 if (IS_ENCRYPTED(inode))
1c6d8ee4 808 stat->attributes |= STATX_ATTR_ENCRYPTED;
59c84408 809 if (flags & F2FS_IMMUTABLE_FL)
1c6d8ee4 810 stat->attributes |= STATX_ATTR_IMMUTABLE;
59c84408 811 if (flags & F2FS_NODUMP_FL)
1c6d8ee4 812 stat->attributes |= STATX_ATTR_NODUMP;
924e3194
EB		 813 if (IS_VERITY(inode))
814 stat->attributes |= STATX_ATTR_VERITY;
1c6d8ee4 815
fd26725f
CY		 816 stat->attributes_mask |= (STATX_ATTR_COMPRESSED |
817 STATX_ATTR_APPEND |
1c6d8ee4
CY		 818 STATX_ATTR_ENCRYPTED |
819 STATX_ATTR_IMMUTABLE |
924e3194
EB		 820 STATX_ATTR_NODUMP |
821 STATX_ATTR_VERITY);
1c6d8ee4 822
0d56a451 823 generic_fillattr(&init_user_ns, inode, stat);
5b4267d1
JK		 824
825 /* we need to show initial sectors used for inline_data/dentries */
826 if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) ||
827 f2fs_has_inline_dentry(inode))
828 stat->blocks += (stat->size + 511) >> 9;
829
fbfa2cc5
JK		 830 return 0;
831}
832
833#ifdef CONFIG_F2FS_FS_POSIX_ACL
e65ce2a5
CB		 834static void __setattr_copy(struct user_namespace *mnt_userns,
835 struct inode *inode, const struct iattr *attr)
fbfa2cc5 836{
fbfa2cc5
JK		 837 unsigned int ia_valid = attr->ia_valid;
838
839 if (ia_valid & ATTR_UID)
840 inode->i_uid = attr->ia_uid;
841 if (ia_valid & ATTR_GID)
842 inode->i_gid = attr->ia_gid;
eb31e2f6
AG		 843 if (ia_valid & ATTR_ATIME)
844 inode->i_atime = attr->ia_atime;
845 if (ia_valid & ATTR_MTIME)
846 inode->i_mtime = attr->ia_mtime;
847 if (ia_valid & ATTR_CTIME)
848 inode->i_ctime = attr->ia_ctime;
fbfa2cc5
JK		 849 if (ia_valid & ATTR_MODE) {
850 umode_t mode = attr->ia_mode;
2f221d6f 851 kgid_t kgid = i_gid_into_mnt(mnt_userns, inode);
fbfa2cc5 852
2f221d6f 853 if (!in_group_p(kgid) && !capable(CAP_FSETID))
fbfa2cc5 854 mode &= ~S_ISGID;
91942321 855 set_acl_inode(inode, mode);
fbfa2cc5
JK		 856 }
857}
858#else
859#define __setattr_copy setattr_copy
860#endif
861
862int f2fs_setattr(struct dentry *dentry, struct iattr *attr)
863{
2b0143b5 864 struct inode *inode = d_inode(dentry);
fbfa2cc5
JK		 865 int err;
866
1f227a3e
JK		 867 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
868 return -EIO;
869
4c8ff709
CY		 870 if ((attr->ia_valid & ATTR_SIZE) &&
871 !f2fs_is_compress_backend_ready(inode))
872 return -EOPNOTSUPP;
873
2f221d6f 874 err = setattr_prepare(&init_user_ns, dentry, attr);
fbfa2cc5
JK		 875 if (err)
876 return err;
877
20bb2479
EB		 878 err = fscrypt_prepare_setattr(dentry, attr);
879 if (err)
880 return err;
881
95ae251f
EB		 882 err = fsverity_prepare_setattr(dentry, attr);
883 if (err)
884 return err;
885
0abd675e
CY		 886 if (is_quota_modification(inode, attr)) {
887 err = dquot_initialize(inode);
888 if (err)
889 return err;
890 }
891 if ((attr->ia_valid & ATTR_UID &&
892 !uid_eq(attr->ia_uid, inode->i_uid)) ||
893 (attr->ia_valid & ATTR_GID &&
894 !gid_eq(attr->ia_gid, inode->i_gid))) {
af033b2a 895 f2fs_lock_op(F2FS_I_SB(inode));
0abd675e 896 err = dquot_transfer(inode, attr);
af033b2a
CY		 897 if (err) {
898 set_sbi_flag(F2FS_I_SB(inode),
899 SBI_QUOTA_NEED_REPAIR);
900 f2fs_unlock_op(F2FS_I_SB(inode));
0abd675e 901 return err;
af033b2a
CY		 902 }
903 /*
904 * update uid/gid under lock_op(), so that dquot and inode can
905 * be updated atomically.
906 */
907 if (attr->ia_valid & ATTR_UID)
908 inode->i_uid = attr->ia_uid;
909 if (attr->ia_valid & ATTR_GID)
910 inode->i_gid = attr->ia_gid;
911 f2fs_mark_inode_dirty_sync(inode, true);
912 f2fs_unlock_op(F2FS_I_SB(inode));
0abd675e
CY		 913 }
914
09db6a2e 915 if (attr->ia_valid & ATTR_SIZE) {
cfb9a34d
JK		 916 loff_t old_size = i_size_read(inode);
917
918 if (attr->ia_size > MAX_INLINE_DATA(inode)) {
919 /*
920 * should convert inline inode before i_size_write to
921 * keep smaller than inline_data size with inline flag.
922 */
923 err = f2fs_convert_inline_inode(inode);
924 if (err)
925 return err;
926 }
a33c1502 927
a33c1502 928 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
6f8d4455 929 down_write(&F2FS_I(inode)->i_mmap_sem);
a33c1502
CY		 930
931 truncate_setsize(inode, attr->ia_size);
932
cfb9a34d 933 if (attr->ia_size <= old_size)
9a449e9c 934 err = f2fs_truncate(inode);
a33c1502
CY		 935 /*
936 * do not trim all blocks after i_size if target size is
937 * larger than i_size.
938 */
a33c1502 939 up_write(&F2FS_I(inode)->i_mmap_sem);
6f8d4455 940 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
a33c1502
CY		 941 if (err)
942 return err;
0cab80ee 943
c10c9820 944 spin_lock(&F2FS_I(inode)->i_size_lock);
cfb9a34d 945 inode->i_mtime = inode->i_ctime = current_time(inode);
a0d00fad 946 F2FS_I(inode)->last_disk_size = i_size_read(inode);
c10c9820 947 spin_unlock(&F2FS_I(inode)->i_size_lock);
fbfa2cc5
JK		 948 }
949
2f221d6f 950 __setattr_copy(&init_user_ns, inode, attr);
fbfa2cc5
JK		 951
952 if (attr->ia_valid & ATTR_MODE) {
e65ce2a5
CB		 953 err = posix_acl_chmod(&init_user_ns, inode,
954 f2fs_get_inode_mode(inode));
91942321
JK		 955 if (err || is_inode_flag_set(inode, FI_ACL_MODE)) {
956 inode->i_mode = F2FS_I(inode)->i_acl_mode;
957 clear_inode_flag(inode, FI_ACL_MODE);
fbfa2cc5
JK		 958 }
959 }
960
c0ed4405 961 /* file size may changed here */
ca597bdd 962 f2fs_mark_inode_dirty_sync(inode, true);
15d04354
JK		 963
964 /* inode change will produce dirty node pages flushed by checkpoint */
965 f2fs_balance_fs(F2FS_I_SB(inode), true);
966
fbfa2cc5
JK		 967 return err;
968}
969
970const struct inode_operations f2fs_file_inode_operations = {
971 .getattr = f2fs_getattr,
972 .setattr = f2fs_setattr,
973 .get_acl = f2fs_get_acl,
a6dda0e6 974 .set_acl = f2fs_set_acl,
fbfa2cc5 975 .listxattr = f2fs_listxattr,
9ab70134 976 .fiemap = f2fs_fiemap,
fbfa2cc5
JK		 977};
978
6394328a 979static int fill_zero(struct inode *inode, pgoff_t index,
fbfa2cc5
JK		 980 loff_t start, loff_t len)
981{
4081363f 982 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5
JK		 983 struct page *page;
984
985 if (!len)
6394328a 986 return 0;
fbfa2cc5 987
2c4db1a6 988 f2fs_balance_fs(sbi, true);
bd43df02 989
e479556b 990 f2fs_lock_op(sbi);
4d57b86d 991 page = f2fs_get_new_data_page(inode, NULL, index, false);
e479556b 992 f2fs_unlock_op(sbi);
fbfa2cc5 993
6394328a
CY		 994 if (IS_ERR(page))
995 return PTR_ERR(page);
996
bae0ee7a 997 f2fs_wait_on_page_writeback(page, DATA, true, true);
6394328a
CY		 998 zero_user(page, start, len);
999 set_page_dirty(page);
1000 f2fs_put_page(page, 1);
1001 return 0;
fbfa2cc5
JK		 1002}
1003
4d57b86d 1004int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
fbfa2cc5 1005{
fbfa2cc5
JK		 1006 int err;
1007
ea58711e 1008 while (pg_start < pg_end) {
fbfa2cc5 1009 struct dnode_of_data dn;
ea58711e 1010 pgoff_t end_offset, count;
9eaeba70 1011
fbfa2cc5 1012 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1013 err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
fbfa2cc5 1014 if (err) {
ea58711e 1015 if (err == -ENOENT) {
4d57b86d
CY		 1016 pg_start = f2fs_get_next_page_offset(&dn,
1017 pg_start);
fbfa2cc5 1018 continue;
ea58711e 1019 }
fbfa2cc5
JK		 1020 return err;
1021 }
1022
81ca7350 1023 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
ea58711e
CY		 1024 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
1025
1026 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
1027
4d57b86d 1028 f2fs_truncate_data_blocks_range(&dn, count);
fbfa2cc5 1029 f2fs_put_dnode(&dn);
ea58711e
CY		 1030
1031 pg_start += count;
fbfa2cc5
JK		 1032 }
1033 return 0;
1034}
1035
a66c7b2f 1036static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
fbfa2cc5
JK		 1037{
1038 pgoff_t pg_start, pg_end;
1039 loff_t off_start, off_end;
b9d777b8 1040 int ret;
fbfa2cc5 1041
b9d777b8
JK		 1042 ret = f2fs_convert_inline_inode(inode);
1043 if (ret)
1044 return ret;
9ffe0fb5 1045
09cbfeaf
KS		 1046 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1047 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
fbfa2cc5 1048
09cbfeaf
KS		 1049 off_start = offset & (PAGE_SIZE - 1);
1050 off_end = (offset + len) & (PAGE_SIZE - 1);
fbfa2cc5
JK		 1051
1052 if (pg_start == pg_end) {
6394328a 1053 ret = fill_zero(inode, pg_start, off_start,
fbfa2cc5 1054 off_end - off_start);
6394328a
CY		 1055 if (ret)
1056 return ret;
fbfa2cc5 1057 } else {
6394328a
CY		 1058 if (off_start) {
1059 ret = fill_zero(inode, pg_start++, off_start,
09cbfeaf 1060 PAGE_SIZE - off_start);
6394328a
CY		 1061 if (ret)
1062 return ret;
1063 }
1064 if (off_end) {
1065 ret = fill_zero(inode, pg_end, 0, off_end);
1066 if (ret)
1067 return ret;
1068 }
fbfa2cc5
JK		 1069
1070 if (pg_start < pg_end) {
1071 struct address_space *mapping = inode->i_mapping;
1072 loff_t blk_start, blk_end;
4081363f 1073 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1127a3d4 1074
2c4db1a6 1075 f2fs_balance_fs(sbi, true);
fbfa2cc5 1076
09cbfeaf
KS		 1077 blk_start = (loff_t)pg_start << PAGE_SHIFT;
1078 blk_end = (loff_t)pg_end << PAGE_SHIFT;
a33c1502 1079
a33c1502 1080 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
6f8d4455 1081 down_write(&F2FS_I(inode)->i_mmap_sem);
a33c1502 1082
fbfa2cc5
JK		 1083 truncate_inode_pages_range(mapping, blk_start,
1084 blk_end - 1);
39936837 1085
e479556b 1086 f2fs_lock_op(sbi);
4d57b86d 1087 ret = f2fs_truncate_hole(inode, pg_start, pg_end);
e479556b 1088 f2fs_unlock_op(sbi);
a33c1502 1089
5a3a2d83 1090 up_write(&F2FS_I(inode)->i_mmap_sem);
6f8d4455 1091 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
fbfa2cc5
JK		 1092 }
1093 }
1094
fbfa2cc5
JK		 1095 return ret;
1096}
1097
0a2aa8fb
JK		 1098static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr,
1099 int *do_replace, pgoff_t off, pgoff_t len)
b4ace337
CY		 1100{
1101 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1102 struct dnode_of_data dn;
0a2aa8fb 1103 int ret, done, i;
ecbaa406 1104
0a2aa8fb 1105next_dnode:
6e2c64ad 1106 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1107 ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA);
6e2c64ad
JK		 1108 if (ret && ret != -ENOENT) {
1109 return ret;
1110 } else if (ret == -ENOENT) {
0a2aa8fb
JK		 1111 if (dn.max_level == 0)
1112 return -ENOENT;
4c8ff709
CY		 1113 done = min((pgoff_t)ADDRS_PER_BLOCK(inode) -
1114 dn.ofs_in_node, len);
0a2aa8fb
JK		 1115 blkaddr += done;
1116 do_replace += done;
1117 goto next;
1118 }
1119
1120 done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) -
1121 dn.ofs_in_node, len);
1122 for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) {
a2ced1ce 1123 *blkaddr = f2fs_data_blkaddr(&dn);
93770ab7
CY		 1124
1125 if (__is_valid_data_blkaddr(*blkaddr) &&
1126 !f2fs_is_valid_blkaddr(sbi, *blkaddr,
1127 DATA_GENERIC_ENHANCE)) {
1128 f2fs_put_dnode(&dn);
10f966bb 1129 return -EFSCORRUPTED;
93770ab7
CY		 1130 }
1131
4d57b86d 1132 if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) {
0a2aa8fb 1133
b0332a0f 1134 if (f2fs_lfs_mode(sbi)) {
0a2aa8fb 1135 f2fs_put_dnode(&dn);
fd114ab2 1136 return -EOPNOTSUPP;
0a2aa8fb
JK		 1137 }
1138
6e2c64ad 1139 /* do not invalidate this block address */
f28b3434 1140 f2fs_update_data_blkaddr(&dn, NULL_ADDR);
0a2aa8fb 1141 *do_replace = 1;
b4ace337 1142 }
6e2c64ad 1143 }
0a2aa8fb
JK		 1144 f2fs_put_dnode(&dn);
1145next:
1146 len -= done;
1147 off += done;
1148 if (len)
1149 goto next_dnode;
1150 return 0;
1151}
b4ace337 1152
0a2aa8fb
JK		 1153static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr,
1154 int *do_replace, pgoff_t off, int len)
1155{
1156 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1157 struct dnode_of_data dn;
1158 int ret, i;
b4ace337 1159
0a2aa8fb
JK		 1160 for (i = 0; i < len; i++, do_replace++, blkaddr++) {
1161 if (*do_replace == 0)
1162 continue;
b4ace337 1163
0a2aa8fb 1164 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1165 ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA);
0a2aa8fb
JK		 1166 if (ret) {
1167 dec_valid_block_count(sbi, inode, 1);
4d57b86d 1168 f2fs_invalidate_blocks(sbi, *blkaddr);
0a2aa8fb
JK		 1169 } else {
1170 f2fs_update_data_blkaddr(&dn, *blkaddr);
36abef4e 1171 }
0a2aa8fb
JK		 1172 f2fs_put_dnode(&dn);
1173 }
1174 return 0;
1175}
1176
1177static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode,
1178 block_t *blkaddr, int *do_replace,
1179 pgoff_t src, pgoff_t dst, pgoff_t len, bool full)
1180{
1181 struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode);
1182 pgoff_t i = 0;
1183 int ret;
36abef4e 1184
0a2aa8fb
JK		 1185 while (i < len) {
1186 if (blkaddr[i] == NULL_ADDR && !full) {
1187 i++;
1188 continue;
6e2c64ad 1189 }
b4ace337 1190
0a2aa8fb
JK		 1191 if (do_replace[i] || blkaddr[i] == NULL_ADDR) {
1192 struct dnode_of_data dn;
1193 struct node_info ni;
1194 size_t new_size;
1195 pgoff_t ilen;
b4ace337 1196
0a2aa8fb 1197 set_new_dnode(&dn, dst_inode, NULL, NULL, 0);
4d57b86d 1198 ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE);
0a2aa8fb
JK		 1199 if (ret)
1200 return ret;
b4ace337 1201
7735730d
CY		 1202 ret = f2fs_get_node_info(sbi, dn.nid, &ni);
1203 if (ret) {
1204 f2fs_put_dnode(&dn);
1205 return ret;
1206 }
1207
0a2aa8fb
JK		 1208 ilen = min((pgoff_t)
1209 ADDRS_PER_PAGE(dn.node_page, dst_inode) -
1210 dn.ofs_in_node, len - i);
1211 do {
a2ced1ce 1212 dn.data_blkaddr = f2fs_data_blkaddr(&dn);
4d57b86d 1213 f2fs_truncate_data_blocks_range(&dn, 1);
0a2aa8fb
JK		 1214
1215 if (do_replace[i]) {
1216 f2fs_i_blocks_write(src_inode,
0abd675e 1217 1, false, false);
0a2aa8fb 1218 f2fs_i_blocks_write(dst_inode,
0abd675e 1219 1, true, false);
0a2aa8fb
JK		 1220 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
1221 blkaddr[i], ni.version, true, false);
1222
1223 do_replace[i] = 0;
1224 }
1225 dn.ofs_in_node++;
1226 i++;
1f0d5c91 1227 new_size = (loff_t)(dst + i) << PAGE_SHIFT;
0a2aa8fb
JK		 1228 if (dst_inode->i_size < new_size)
1229 f2fs_i_size_write(dst_inode, new_size);
e87f7329 1230 } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR));
6e2c64ad 1231
0a2aa8fb
JK		 1232 f2fs_put_dnode(&dn);
1233 } else {
1234 struct page *psrc, *pdst;
1235
4d57b86d
CY		 1236 psrc = f2fs_get_lock_data_page(src_inode,
1237 src + i, true);
0a2aa8fb
JK		 1238 if (IS_ERR(psrc))
1239 return PTR_ERR(psrc);
4d57b86d 1240 pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i,
0a2aa8fb
JK		 1241 true);
1242 if (IS_ERR(pdst)) {
1243 f2fs_put_page(psrc, 1);
1244 return PTR_ERR(pdst);
1245 }
1246 f2fs_copy_page(psrc, pdst);
1247 set_page_dirty(pdst);
1248 f2fs_put_page(pdst, 1);
6e2c64ad 1249 f2fs_put_page(psrc, 1);
b4ace337 1250
4d57b86d
CY		 1251 ret = f2fs_truncate_hole(src_inode,
1252 src + i, src + i + 1);
0a2aa8fb
JK		 1253 if (ret)
1254 return ret;
1255 i++;
1256 }
6e2c64ad
JK		 1257 }
1258 return 0;
0a2aa8fb 1259}
b4ace337 1260
0a2aa8fb
JK		 1261static int __exchange_data_block(struct inode *src_inode,
1262 struct inode *dst_inode, pgoff_t src, pgoff_t dst,
363cad7f 1263 pgoff_t len, bool full)
0a2aa8fb
JK		 1264{
1265 block_t *src_blkaddr;
1266 int *do_replace;
363cad7f 1267 pgoff_t olen;
0a2aa8fb
JK		 1268 int ret;
1269
363cad7f 1270 while (len) {
d02a6e61 1271 olen = min((pgoff_t)4 * ADDRS_PER_BLOCK(src_inode), len);
0a2aa8fb 1272
628b3d14 1273 src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode),
9d2a789c 1274 array_size(olen, sizeof(block_t)),
4f4460c0 1275 GFP_NOFS);
363cad7f
JK		 1276 if (!src_blkaddr)
1277 return -ENOMEM;
0a2aa8fb 1278
628b3d14 1279 do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode),
9d2a789c 1280 array_size(olen, sizeof(int)),
4f4460c0 1281 GFP_NOFS);
363cad7f
JK		 1282 if (!do_replace) {
1283 kvfree(src_blkaddr);
1284 return -ENOMEM;
1285 }
0a2aa8fb 1286
363cad7f
JK		 1287 ret = __read_out_blkaddrs(src_inode, src_blkaddr,
1288 do_replace, src, olen);
1289 if (ret)
1290 goto roll_back;
0a2aa8fb 1291
363cad7f
JK		 1292 ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr,
1293 do_replace, src, dst, olen, full);
1294 if (ret)
1295 goto roll_back;
1296
1297 src += olen;
1298 dst += olen;
1299 len -= olen;
1300
1301 kvfree(src_blkaddr);
1302 kvfree(do_replace);
1303 }
0a2aa8fb
JK		 1304 return 0;
1305
1306roll_back:
9fd62605 1307 __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen);
0a2aa8fb
JK		 1308 kvfree(src_blkaddr);
1309 kvfree(do_replace);
6e2c64ad
JK		 1310 return ret;
1311}
b4ace337 1312
6f8d4455 1313static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len)
6e2c64ad
JK		 1314{
1315 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
f91108b8 1316 pgoff_t nrpages = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
6f8d4455
JK		 1317 pgoff_t start = offset >> PAGE_SHIFT;
1318 pgoff_t end = (offset + len) >> PAGE_SHIFT;
0a2aa8fb 1319 int ret;
6e2c64ad 1320
0a2aa8fb 1321 f2fs_balance_fs(sbi, true);
5f281fab 1322
6f8d4455
JK		 1323 /* avoid gc operation during block exchange */
1324 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1325 down_write(&F2FS_I(inode)->i_mmap_sem);
5f281fab 1326
6f8d4455
JK		 1327 f2fs_lock_op(sbi);
1328 f2fs_drop_extent_tree(inode);
1329 truncate_pagecache(inode, offset);
0a2aa8fb
JK		 1330 ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
1331 f2fs_unlock_op(sbi);
6f8d4455
JK		 1332
1333 up_write(&F2FS_I(inode)->i_mmap_sem);
1334 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
b4ace337
CY		 1335 return ret;
1336}
1337
1338static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
1339{
b4ace337
CY		 1340 loff_t new_size;
1341 int ret;
1342
b4ace337
CY		 1343 if (offset + len >= i_size_read(inode))
1344 return -EINVAL;
1345
1346 /* collapse range should be aligned to block size of f2fs. */
1347 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1348 return -EINVAL;
1349
b9d777b8
JK		 1350 ret = f2fs_convert_inline_inode(inode);
1351 if (ret)
1352 return ret;
97a7b2c2 1353
b4ace337
CY		 1354 /* write out all dirty pages from offset */
1355 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1356 if (ret)
6f8d4455 1357 return ret;
b4ace337 1358
6f8d4455 1359 ret = f2fs_do_collapse(inode, offset, len);
b4ace337 1360 if (ret)
6f8d4455 1361 return ret;
b4ace337 1362
6e2c64ad 1363 /* write out all moved pages, if possible */
6f8d4455 1364 down_write(&F2FS_I(inode)->i_mmap_sem);
6e2c64ad
JK		 1365 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1366 truncate_pagecache(inode, offset);
1367
b4ace337 1368 new_size = i_size_read(inode) - len;
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);
fd612648
DJ		 1651
1652 f2fs_lock_op(sbi);
d0b9e42a 1653 f2fs_allocate_new_segment(sbi, CURSEG_COLD_DATA_PINNED);
fd612648
DJ		 1654 f2fs_unlock_op(sbi);
1655
d0b9e42a 1656 map.m_seg_type = CURSEG_COLD_DATA_PINNED;
f5a53edc 1657 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_DIO);
d0b9e42a 1658
f5a53edc 1659 up_write(&sbi->pin_sem);
cad3836f 1660
f5a53edc
JK		 1661 done += map.m_len;
1662 len -= map.m_len;
1663 map.m_lblk += map.m_len;
1664 if (!err && len)
1665 goto next_alloc;
1666
1667 map.m_len = done;
1668 } else {
1669 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
1670 }
1671out_err:
a7de6086 1672 if (err) {
e12dd7bd 1673 pgoff_t last_off;
fbfa2cc5 1674
e12dd7bd 1675 if (!map.m_len)
a7de6086 1676 return err;
98397ff3 1677
e12dd7bd
JK		 1678 last_off = map.m_lblk + map.m_len - 1;
1679
1680 /* update new size to the failed position */
1061fd48 1681 new_size = (last_off == pg_end) ? offset + len :
e12dd7bd
JK		 1682 (loff_t)(last_off + 1) << PAGE_SHIFT;
1683 } else {
1684 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
fbfa2cc5
JK		 1685 }
1686
e8ed90a6
CY		 1687 if (new_size > i_size_read(inode)) {
1688 if (mode & FALLOC_FL_KEEP_SIZE)
1689 file_set_keep_isize(inode);
1690 else
1691 f2fs_i_size_write(inode, new_size);
1692 }
fbfa2cc5 1693
a7de6086 1694 return err;
fbfa2cc5
JK		 1695}
1696
1697static long f2fs_fallocate(struct file *file, int mode,
1698 loff_t offset, loff_t len)
1699{
6131ffaa 1700 struct inode *inode = file_inode(file);
587c0a42 1701 long ret = 0;
fbfa2cc5 1702
1f227a3e
JK		 1703 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
1704 return -EIO;
00e09c0b
CY		 1705 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode)))
1706 return -ENOSPC;
4c8ff709
CY		 1707 if (!f2fs_is_compress_backend_ready(inode))
1708 return -EOPNOTSUPP;
1f227a3e 1709
c998012b
CY		 1710 /* f2fs only support ->fallocate for regular file */
1711 if (!S_ISREG(inode->i_mode))
1712 return -EINVAL;
1713
62230e0d 1714 if (IS_ENCRYPTED(inode) &&
f62185d0 1715 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
fcc85a4d
JK		 1716 return -EOPNOTSUPP;
1717
4c8ff709
CY		 1718 if (f2fs_compressed_file(inode) &&
1719 (mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE |
1720 FALLOC_FL_ZERO_RANGE | FALLOC_FL_INSERT_RANGE)))
1721 return -EOPNOTSUPP;
1722
b4ace337 1723 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
f62185d0
CY		 1724 FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1725 FALLOC_FL_INSERT_RANGE))
fbfa2cc5
JK		 1726 return -EOPNOTSUPP;
1727
5955102c 1728 inode_lock(inode);
3375f696 1729
587c0a42
TY		 1730 if (mode & FALLOC_FL_PUNCH_HOLE) {
1731 if (offset >= inode->i_size)
1732 goto out;
1733
a66c7b2f 1734 ret = punch_hole(inode, offset, len);
b4ace337
CY		 1735 } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1736 ret = f2fs_collapse_range(inode, offset, len);
75cd4e09
CY		 1737 } else if (mode & FALLOC_FL_ZERO_RANGE) {
1738 ret = f2fs_zero_range(inode, offset, len, mode);
f62185d0
CY		 1739 } else if (mode & FALLOC_FL_INSERT_RANGE) {
1740 ret = f2fs_insert_range(inode, offset, len);
b4ace337 1741 } else {
fbfa2cc5 1742 ret = expand_inode_data(inode, offset, len, mode);
b4ace337 1743 }
fbfa2cc5 1744
3af60a49 1745 if (!ret) {
078cd827 1746 inode->i_mtime = inode->i_ctime = current_time(inode);
7c45729a 1747 f2fs_mark_inode_dirty_sync(inode, false);
d0239e1b 1748 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3af60a49 1749 }
3375f696 1750
587c0a42 1751out:
5955102c 1752 inode_unlock(inode);
3375f696 1753
c01e2853 1754 trace_f2fs_fallocate(inode, mode, offset, len, ret);
fbfa2cc5
JK		 1755 return ret;
1756}
1757
1e84371f
JK		 1758static int f2fs_release_file(struct inode *inode, struct file *filp)
1759{
de5307e4
JK		 1760 /*
1761 * f2fs_relase_file is called at every close calls. So we should
1762 * not drop any inmemory pages by close called by other process.
1763 */
1764 if (!(filp->f_mode & FMODE_WRITE) ||
1765 atomic_read(&inode->i_writecount) != 1)
1766 return 0;
1767
1e84371f
JK		 1768 /* some remained atomic pages should discarded */
1769 if (f2fs_is_atomic_file(inode))
4d57b86d 1770 f2fs_drop_inmem_pages(inode);
1e84371f 1771 if (f2fs_is_volatile_file(inode)) {
91942321 1772 set_inode_flag(inode, FI_DROP_CACHE);
1e84371f 1773 filemap_fdatawrite(inode->i_mapping);
91942321 1774 clear_inode_flag(inode, FI_DROP_CACHE);
dfa74280
CY		 1775 clear_inode_flag(inode, FI_VOLATILE_FILE);
1776 stat_dec_volatile_write(inode);
1e84371f
JK		 1777 }
1778 return 0;
1779}
1780
7a10f017 1781static int f2fs_file_flush(struct file *file, fl_owner_t id)
fbfa2cc5 1782{
7a10f017
JK		 1783 struct inode *inode = file_inode(file);
1784
1785 /*
1786 * If the process doing a transaction is crashed, we should do
1787 * roll-back. Otherwise, other reader/write can see corrupted database
1788 * until all the writers close its file. Since this should be done
1789 * before dropping file lock, it needs to do in ->flush.
1790 */
1791 if (f2fs_is_atomic_file(inode) &&
1792 F2FS_I(inode)->inmem_task == current)
4d57b86d 1793 f2fs_drop_inmem_pages(inode);
7a10f017 1794 return 0;
fbfa2cc5
JK		 1795}
1796
36098557 1797static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask)
2c1d0305
CY		 1798{
1799 struct f2fs_inode_info *fi = F2FS_I(inode);
99eabb91
JK		 1800 u32 masked_flags = fi->i_flags & mask;
1801
1802 f2fs_bug_on(F2FS_I_SB(inode), (iflags & ~mask));
2c1d0305
CY		 1803
1804 /* Is it quota file? Do not allow user to mess with it */
1805 if (IS_NOQUOTA(inode))
1806 return -EPERM;
1807
99eabb91 1808 if ((iflags ^ masked_flags) & F2FS_CASEFOLD_FL) {
2c2eb7a3
DR		 1809 if (!f2fs_sb_has_casefold(F2FS_I_SB(inode)))
1810 return -EOPNOTSUPP;
1811 if (!f2fs_empty_dir(inode))
1812 return -ENOTEMPTY;
1813 }
1814
4c8ff709
CY		 1815 if (iflags & (F2FS_COMPR_FL | F2FS_NOCOMP_FL)) {
1816 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
1817 return -EOPNOTSUPP;
1818 if ((iflags & F2FS_COMPR_FL) && (iflags & F2FS_NOCOMP_FL))
1819 return -EINVAL;
1820 }
1821
99eabb91 1822 if ((iflags ^ masked_flags) & F2FS_COMPR_FL) {
aa576970 1823 if (masked_flags & F2FS_COMPR_FL) {
78134d03 1824 if (!f2fs_disable_compressed_file(inode))
2536ac68
CY		 1825 return -EINVAL;
1826 }
4c8ff709
CY		 1827 if (iflags & F2FS_NOCOMP_FL)
1828 return -EINVAL;
1829 if (iflags & F2FS_COMPR_FL) {
4c8ff709
CY		 1830 if (!f2fs_may_compress(inode))
1831 return -EINVAL;
519a5a2f
CY		 1832 if (S_ISREG(inode->i_mode) && inode->i_size)
1833 return -EINVAL;
4c8ff709
CY		 1834
1835 set_compress_context(inode);
1836 }
1837 }
99eabb91
JK		 1838 if ((iflags ^ masked_flags) & F2FS_NOCOMP_FL) {
1839 if (masked_flags & F2FS_COMPR_FL)
4c8ff709
CY		 1840 return -EINVAL;
1841 }
1842
d5e5efa2 1843 fi->i_flags = iflags | (fi->i_flags & ~mask);
4c8ff709
CY		 1844 f2fs_bug_on(F2FS_I_SB(inode), (fi->i_flags & F2FS_COMPR_FL) &&
1845 (fi->i_flags & F2FS_NOCOMP_FL));
2c1d0305 1846
59c84408 1847 if (fi->i_flags & F2FS_PROJINHERIT_FL)
2c1d0305
CY		 1848 set_inode_flag(inode, FI_PROJ_INHERIT);
1849 else
1850 clear_inode_flag(inode, FI_PROJ_INHERIT);
1851
1852 inode->i_ctime = current_time(inode);
1853 f2fs_set_inode_flags(inode);
b32e0190 1854 f2fs_mark_inode_dirty_sync(inode, true);
2c1d0305
CY		 1855 return 0;
1856}
1857
36098557
EB		 1858/* FS_IOC_GETFLAGS and FS_IOC_SETFLAGS support */
1859
1860/*
1861 * To make a new on-disk f2fs i_flag gettable via FS_IOC_GETFLAGS, add an entry
1862 * for it to f2fs_fsflags_map[], and add its FS_*_FL equivalent to
1863 * F2FS_GETTABLE_FS_FL. To also make it settable via FS_IOC_SETFLAGS, also add
1864 * its FS_*_FL equivalent to F2FS_SETTABLE_FS_FL.
1865 */
1866
1867static const struct {
1868 u32 iflag;
1869 u32 fsflag;
1870} f2fs_fsflags_map[] = {
4c8ff709 1871 { F2FS_COMPR_FL, FS_COMPR_FL },
36098557
EB		 1872 { F2FS_SYNC_FL, FS_SYNC_FL },
1873 { F2FS_IMMUTABLE_FL, FS_IMMUTABLE_FL },
1874 { F2FS_APPEND_FL, FS_APPEND_FL },
1875 { F2FS_NODUMP_FL, FS_NODUMP_FL },
1876 { F2FS_NOATIME_FL, FS_NOATIME_FL },
4c8ff709 1877 { F2FS_NOCOMP_FL, FS_NOCOMP_FL },
36098557
EB		 1878 { F2FS_INDEX_FL, FS_INDEX_FL },
1879 { F2FS_DIRSYNC_FL, FS_DIRSYNC_FL },
1880 { F2FS_PROJINHERIT_FL, FS_PROJINHERIT_FL },
2c2eb7a3 1881 { F2FS_CASEFOLD_FL, FS_CASEFOLD_FL },
36098557
EB		 1882};
1883
1884#define F2FS_GETTABLE_FS_FL ( \
4c8ff709 1885 FS_COMPR_FL | \
36098557
EB		 1886 FS_SYNC_FL | \
1887 FS_IMMUTABLE_FL | \
1888 FS_APPEND_FL | \
1889 FS_NODUMP_FL | \
1890 FS_NOATIME_FL | \
4c8ff709 1891 FS_NOCOMP_FL | \
36098557
EB		 1892 FS_INDEX_FL | \
1893 FS_DIRSYNC_FL | \
1894 FS_PROJINHERIT_FL | \
1895 FS_ENCRYPT_FL | \
1896 FS_INLINE_DATA_FL | \
95ae251f 1897 FS_NOCOW_FL | \
fbc246a1 1898 FS_VERITY_FL | \
2c2eb7a3 1899 FS_CASEFOLD_FL)
36098557
EB		 1900
1901#define F2FS_SETTABLE_FS_FL ( \
4c8ff709 1902 FS_COMPR_FL | \
36098557
EB		 1903 FS_SYNC_FL | \
1904 FS_IMMUTABLE_FL | \
1905 FS_APPEND_FL | \
1906 FS_NODUMP_FL | \
1907 FS_NOATIME_FL | \
4c8ff709 1908 FS_NOCOMP_FL | \
36098557 1909 FS_DIRSYNC_FL | \
2c2eb7a3
DR		 1910 FS_PROJINHERIT_FL | \
1911 FS_CASEFOLD_FL)
36098557
EB		 1912
1913/* Convert f2fs on-disk i_flags to FS_IOC_{GET,SET}FLAGS flags */
1914static inline u32 f2fs_iflags_to_fsflags(u32 iflags)
1915{
1916 u32 fsflags = 0;
1917 int i;
1918
1919 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1920 if (iflags & f2fs_fsflags_map[i].iflag)
1921 fsflags |= f2fs_fsflags_map[i].fsflag;
1922
1923 return fsflags;
1924}
1925
1926/* Convert FS_IOC_{GET,SET}FLAGS flags to f2fs on-disk i_flags */
1927static inline u32 f2fs_fsflags_to_iflags(u32 fsflags)
1928{
1929 u32 iflags = 0;
1930 int i;
1931
1932 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1933 if (fsflags & f2fs_fsflags_map[i].fsflag)
1934 iflags |= f2fs_fsflags_map[i].iflag;
1935
1936 return iflags;
1937}
1938
1939static int f2fs_ioc_getflags(struct file *filp, unsigned long arg)
1940{
1941 struct inode *inode = file_inode(filp);
1942 struct f2fs_inode_info *fi = F2FS_I(inode);
1943 u32 fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
1944
1945 if (IS_ENCRYPTED(inode))
1946 fsflags |= FS_ENCRYPT_FL;
95ae251f
EB		 1947 if (IS_VERITY(inode))
1948 fsflags |= FS_VERITY_FL;
36098557
EB		 1949 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))
1950 fsflags |= FS_INLINE_DATA_FL;
1951 if (is_inode_flag_set(inode, FI_PIN_FILE))
1952 fsflags |= FS_NOCOW_FL;
1953
1954 fsflags &= F2FS_GETTABLE_FS_FL;
1955
1956 return put_user(fsflags, (int __user *)arg);
1957}
1958
52656e6c
JK		 1959static int f2fs_ioc_setflags(struct file *filp, unsigned long arg)
1960{
1961 struct inode *inode = file_inode(filp);
a1f32eec
EB		 1962 struct f2fs_inode_info *fi = F2FS_I(inode);
1963 u32 fsflags, old_fsflags;
36098557 1964 u32 iflags;
52656e6c 1965 int ret;
fbfa2cc5 1966
21cb47be 1967 if (!inode_owner_or_capable(&init_user_ns, inode))
7fb17fe4
CY		 1968 return -EACCES;
1969
36098557 1970 if (get_user(fsflags, (int __user *)arg))
7fb17fe4
CY		 1971 return -EFAULT;
1972
36098557
EB		 1973 if (fsflags & ~F2FS_GETTABLE_FS_FL)
1974 return -EOPNOTSUPP;
1975 fsflags &= F2FS_SETTABLE_FS_FL;
1976
1977 iflags = f2fs_fsflags_to_iflags(fsflags);
1978 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
1979 return -EOPNOTSUPP;
1980
52656e6c
JK		 1981 ret = mnt_want_write_file(filp);
1982 if (ret)
1983 return ret;
fbfa2cc5 1984
5955102c 1985 inode_lock(inode);
fbfa2cc5 1986
a1f32eec
EB		 1987 old_fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
1988 ret = vfs_ioc_setflags_prepare(inode, old_fsflags, fsflags);
1989 if (ret)
1990 goto out;
1991
36098557
EB		 1992 ret = f2fs_setflags_common(inode, iflags,
1993 f2fs_fsflags_to_iflags(F2FS_SETTABLE_FS_FL));
a1f32eec 1994out:
a72d4b97 1995 inode_unlock(inode);
52656e6c
JK		 1996 mnt_drop_write_file(filp);
1997 return ret;
1998}
4b2fecc8 1999
d49f3e89
CY		 2000static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
2001{
2002 struct inode *inode = file_inode(filp);
2003
2004 return put_user(inode->i_generation, (int __user *)arg);
2005}
2006
88b88a66
JK		 2007static int f2fs_ioc_start_atomic_write(struct file *filp)
2008{
2009 struct inode *inode = file_inode(filp);
743b620c
JK		 2010 struct f2fs_inode_info *fi = F2FS_I(inode);
2011 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
f4c9c743 2012 int ret;
88b88a66 2013
21cb47be 2014 if (!inode_owner_or_capable(&init_user_ns, inode))
88b88a66
JK		 2015 return -EACCES;
2016
e811898c
JK		 2017 if (!S_ISREG(inode->i_mode))
2018 return -EINVAL;
2019
038d0698
CY		 2020 if (filp->f_flags & O_DIRECT)
2021 return -EINVAL;
2022
7fb17fe4
CY		 2023 ret = mnt_want_write_file(filp);
2024 if (ret)
2025 return ret;
2026
0fac558b
CY		 2027 inode_lock(inode);
2028
4c8ff709
CY		 2029 f2fs_disable_compressed_file(inode);
2030
455e3a58
JK		 2031 if (f2fs_is_atomic_file(inode)) {
2032 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST))
2033 ret = -EINVAL;
7fb17fe4 2034 goto out;
455e3a58 2035 }
88b88a66 2036
f4c9c743
CY		 2037 ret = f2fs_convert_inline_inode(inode);
2038 if (ret)
7fb17fe4 2039 goto out;
88b88a66 2040
6f8d4455
JK		 2041 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
2042
31867b23
JK		 2043 /*
2044 * Should wait end_io to count F2FS_WB_CP_DATA correctly by
2045 * f2fs_is_atomic_file.
2046 */
2047 if (get_dirty_pages(inode))
dcbb4c10
JP		 2048 f2fs_warn(F2FS_I_SB(inode), "Unexpected flush for atomic writes: ino=%lu, npages=%u",
2049 inode->i_ino, get_dirty_pages(inode));
c27753d6 2050 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
6f8d4455
JK		 2051 if (ret) {
2052 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
684ca7e5 2053 goto out;
6f8d4455 2054 }
31867b23 2055
743b620c
JK		 2056 spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
2057 if (list_empty(&fi->inmem_ilist))
2058 list_add_tail(&fi->inmem_ilist, &sbi->inode_list[ATOMIC_FILE]);
677017d1 2059 sbi->atomic_files++;
743b620c
JK		 2060 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
2061
2062 /* add inode in inmem_list first and set atomic_file */
054afda9 2063 set_inode_flag(inode, FI_ATOMIC_FILE);
2ef79ecb 2064 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
6f8d4455 2065 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
684ca7e5 2066
6f8d4455 2067 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7a10f017 2068 F2FS_I(inode)->inmem_task = current;
26a28a0c 2069 stat_update_max_atomic_write(inode);
684ca7e5 2070out:
0fac558b 2071 inode_unlock(inode);
7fb17fe4 2072 mnt_drop_write_file(filp);
c27753d6 2073 return ret;
88b88a66
JK		 2074}
2075
2076static int f2fs_ioc_commit_atomic_write(struct file *filp)
2077{
2078 struct inode *inode = file_inode(filp);
2079 int ret;
2080
21cb47be 2081 if (!inode_owner_or_capable(&init_user_ns, inode))
88b88a66
JK		 2082 return -EACCES;
2083
2084 ret = mnt_want_write_file(filp);
2085 if (ret)
2086 return ret;
2087
6f8d4455 2088 f2fs_balance_fs(F2FS_I_SB(inode), true);
0fac558b 2089
6f8d4455 2090 inode_lock(inode);
1dc0f899 2091
b169c3c5
CY		 2092 if (f2fs_is_volatile_file(inode)) {
2093 ret = -EINVAL;
7fb17fe4 2094 goto err_out;
b169c3c5 2095 }
7fb17fe4 2096
6282adbf 2097 if (f2fs_is_atomic_file(inode)) {
4d57b86d 2098 ret = f2fs_commit_inmem_pages(inode);
5fe45743 2099 if (ret)
edb27dee 2100 goto err_out;
5fe45743 2101
26a28a0c 2102 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
743b620c
JK		 2103 if (!ret)
2104 f2fs_drop_inmem_pages(inode);
26a28a0c 2105 } else {
774e1b78 2106 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false);
6282adbf 2107 }
edb27dee 2108err_out:
2ef79ecb
CY		 2109 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) {
2110 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2111 ret = -EINVAL;
2112 }
0fac558b 2113 inode_unlock(inode);
88b88a66
JK		 2114 mnt_drop_write_file(filp);
2115 return ret;
2116}
2117
02a1335f
JK		 2118static int f2fs_ioc_start_volatile_write(struct file *filp)
2119{
2120 struct inode *inode = file_inode(filp);
f4c9c743 2121 int ret;
02a1335f 2122
21cb47be 2123 if (!inode_owner_or_capable(&init_user_ns, inode))
02a1335f
JK		 2124 return -EACCES;
2125
8ff0971f
CY		 2126 if (!S_ISREG(inode->i_mode))
2127 return -EINVAL;
2128
7fb17fe4
CY		 2129 ret = mnt_want_write_file(filp);
2130 if (ret)
2131 return ret;
2132
0fac558b
CY		 2133 inode_lock(inode);
2134
1e84371f 2135 if (f2fs_is_volatile_file(inode))
7fb17fe4 2136 goto out;
1e84371f 2137
f4c9c743
CY		 2138 ret = f2fs_convert_inline_inode(inode);
2139 if (ret)
7fb17fe4 2140 goto out;
b3d208f9 2141
648d50ba
CY		 2142 stat_inc_volatile_write(inode);
2143 stat_update_max_volatile_write(inode);
2144
91942321 2145 set_inode_flag(inode, FI_VOLATILE_FILE);
d0239e1b 2146 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7fb17fe4 2147out:
0fac558b 2148 inode_unlock(inode);
7fb17fe4
CY		 2149 mnt_drop_write_file(filp);
2150 return ret;
02a1335f
JK		 2151}
2152
1e84371f
JK		 2153static int f2fs_ioc_release_volatile_write(struct file *filp)
2154{
2155 struct inode *inode = file_inode(filp);
7fb17fe4 2156 int ret;
1e84371f 2157
21cb47be 2158 if (!inode_owner_or_capable(&init_user_ns, inode))
1e84371f
JK		 2159 return -EACCES;
2160
7fb17fe4
CY		 2161 ret = mnt_want_write_file(filp);
2162 if (ret)
2163 return ret;
2164
0fac558b
CY		 2165 inode_lock(inode);
2166
1e84371f 2167 if (!f2fs_is_volatile_file(inode))
7fb17fe4 2168 goto out;
1e84371f 2169
7fb17fe4
CY		 2170 if (!f2fs_is_first_block_written(inode)) {
2171 ret = truncate_partial_data_page(inode, 0, true);
2172 goto out;
2173 }
3c6c2beb 2174
7fb17fe4
CY		 2175 ret = punch_hole(inode, 0, F2FS_BLKSIZE);
2176out:
0fac558b 2177 inode_unlock(inode);
7fb17fe4
CY		 2178 mnt_drop_write_file(filp);
2179 return ret;
1e84371f
JK		 2180}
2181
2182static int f2fs_ioc_abort_volatile_write(struct file *filp)
2183{
2184 struct inode *inode = file_inode(filp);
2185 int ret;
2186
21cb47be 2187 if (!inode_owner_or_capable(&init_user_ns, inode))
1e84371f
JK		 2188 return -EACCES;
2189
2190 ret = mnt_want_write_file(filp);
2191 if (ret)
2192 return ret;
2193
0fac558b
CY		 2194 inode_lock(inode);
2195
26dc3d44 2196 if (f2fs_is_atomic_file(inode))
4d57b86d 2197 f2fs_drop_inmem_pages(inode);
732d5648 2198 if (f2fs_is_volatile_file(inode)) {
91942321 2199 clear_inode_flag(inode, FI_VOLATILE_FILE);
648d50ba 2200 stat_dec_volatile_write(inode);
608514de 2201 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
732d5648 2202 }
de6a8ec9 2203
455e3a58
JK		 2204 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2205
0fac558b
CY		 2206 inode_unlock(inode);
2207
1e84371f 2208 mnt_drop_write_file(filp);
d0239e1b 2209 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1e84371f
JK		 2210 return ret;
2211}
2212
1abff93d
JK		 2213static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
2214{
2215 struct inode *inode = file_inode(filp);
2216 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2217 struct super_block *sb = sbi->sb;
2218 __u32 in;
2a96d8ad 2219 int ret = 0;
1abff93d
JK		 2220
2221 if (!capable(CAP_SYS_ADMIN))
2222 return -EPERM;
2223
2224 if (get_user(in, (__u32 __user *)arg))
2225 return -EFAULT;
2226
60b2b4ee
ST		 2227 if (in != F2FS_GOING_DOWN_FULLSYNC) {
2228 ret = mnt_want_write_file(filp);
8626441f
CY		 2229 if (ret) {
2230 if (ret == -EROFS) {
2231 ret = 0;
2232 f2fs_stop_checkpoint(sbi, false);
2233 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2234 trace_f2fs_shutdown(sbi, in, ret);
2235 }
60b2b4ee 2236 return ret;
8626441f 2237 }
60b2b4ee 2238 }
7fb17fe4 2239
1abff93d
JK		 2240 switch (in) {
2241 case F2FS_GOING_DOWN_FULLSYNC:
040f04bd
CH		 2242 ret = freeze_bdev(sb->s_bdev);
2243 if (ret)
d027c484 2244 goto out;
040f04bd
CH		 2245 f2fs_stop_checkpoint(sbi, false);
2246 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2247 thaw_bdev(sb->s_bdev);
1abff93d
JK		 2248 break;
2249 case F2FS_GOING_DOWN_METASYNC:
2250 /* do checkpoint only */
d027c484
CY		 2251 ret = f2fs_sync_fs(sb, 1);
2252 if (ret)
2253 goto out;
38f91ca8 2254 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 2255 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
1abff93d
JK		 2256 break;
2257 case F2FS_GOING_DOWN_NOSYNC:
38f91ca8 2258 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 2259 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
1abff93d 2260 break;
c912a829 2261 case F2FS_GOING_DOWN_METAFLUSH:
4d57b86d 2262 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
38f91ca8 2263 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 2264 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
c912a829 2265 break;
0cd6d9b0
JK		 2266 case F2FS_GOING_DOWN_NEED_FSCK:
2267 set_sbi_flag(sbi, SBI_NEED_FSCK);
db610a64
JK		 2268 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
2269 set_sbi_flag(sbi, SBI_IS_DIRTY);
0cd6d9b0
JK		 2270 /* do checkpoint only */
2271 ret = f2fs_sync_fs(sb, 1);
db610a64 2272 goto out;
1abff93d 2273 default:
7fb17fe4
CY		 2274 ret = -EINVAL;
2275 goto out;
1abff93d 2276 }
7950e9ac 2277
4d57b86d
CY		 2278 f2fs_stop_gc_thread(sbi);
2279 f2fs_stop_discard_thread(sbi);
7950e9ac 2280
4d57b86d 2281 f2fs_drop_discard_cmd(sbi);
7950e9ac
CY		 2282 clear_opt(sbi, DISCARD);
2283
d0239e1b 2284 f2fs_update_time(sbi, REQ_TIME);
7fb17fe4 2285out:
60b2b4ee
ST		 2286 if (in != F2FS_GOING_DOWN_FULLSYNC)
2287 mnt_drop_write_file(filp);
559e87c4
CY		 2288
2289 trace_f2fs_shutdown(sbi, in, ret);
2290
7fb17fe4 2291 return ret;
1abff93d
JK		 2292}
2293
52656e6c
JK		 2294static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
2295{
2296 struct inode *inode = file_inode(filp);
2297 struct super_block *sb = inode->i_sb;
2298 struct request_queue *q = bdev_get_queue(sb->s_bdev);
2299 struct fstrim_range range;
2300 int ret;
4b2fecc8 2301
52656e6c
JK		 2302 if (!capable(CAP_SYS_ADMIN))
2303 return -EPERM;
4b2fecc8 2304
7d20c8ab 2305 if (!f2fs_hw_support_discard(F2FS_SB(sb)))
52656e6c 2306 return -EOPNOTSUPP;
4b2fecc8 2307
52656e6c
JK		 2308 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
2309 sizeof(range)))
2310 return -EFAULT;
4b2fecc8 2311
7fb17fe4
CY		 2312 ret = mnt_want_write_file(filp);
2313 if (ret)
2314 return ret;
2315
52656e6c
JK		 2316 range.minlen = max((unsigned int)range.minlen,
2317 q->limits.discard_granularity);
2318 ret = f2fs_trim_fs(F2FS_SB(sb), &range);
7fb17fe4 2319 mnt_drop_write_file(filp);
52656e6c
JK		 2320 if (ret < 0)
2321 return ret;
4b2fecc8 2322
52656e6c
JK		 2323 if (copy_to_user((struct fstrim_range __user *)arg, &range,
2324 sizeof(range)))
2325 return -EFAULT;
d0239e1b 2326 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
52656e6c
JK		 2327 return 0;
2328}
2329
f424f664
JK		 2330static bool uuid_is_nonzero(__u8 u[16])
2331{
2332 int i;
2333
2334 for (i = 0; i < 16; i++)
2335 if (u[i])
2336 return true;
2337 return false;
2338}
2339
2340static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
2341{
f424f664
JK		 2342 struct inode *inode = file_inode(filp);
2343
7beb01f7 2344 if (!f2fs_sb_has_encrypt(F2FS_I_SB(inode)))
ead710b7
CY		 2345 return -EOPNOTSUPP;
2346
d0239e1b 2347 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7fb17fe4 2348
db717d8e 2349 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
f424f664
JK		 2350}
2351
2352static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
2353{
7beb01f7 2354 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
ead710b7 2355 return -EOPNOTSUPP;
db717d8e 2356 return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
f424f664
JK		 2357}
2358
2359static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
2360{
2361 struct inode *inode = file_inode(filp);
2362 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2363 int err;
2364
7beb01f7 2365 if (!f2fs_sb_has_encrypt(sbi))
f424f664
JK		 2366 return -EOPNOTSUPP;
2367
f424f664
JK		 2368 err = mnt_want_write_file(filp);
2369 if (err)
2370 return err;
2371
846ae671 2372 down_write(&sbi->sb_lock);
d0d3f1b3
CY		 2373
2374 if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
2375 goto got_it;
2376
f424f664
JK		 2377 /* update superblock with uuid */
2378 generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
2379
c5bda1c8 2380 err = f2fs_commit_super(sbi, false);
f424f664
JK		 2381 if (err) {
2382 /* undo new data */
2383 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
d0d3f1b3 2384 goto out_err;
f424f664
JK		 2385 }
2386got_it:
2387 if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt,
2388 16))
d0d3f1b3
CY		 2389 err = -EFAULT;
2390out_err:
846ae671 2391 up_write(&sbi->sb_lock);
d0d3f1b3
CY		 2392 mnt_drop_write_file(filp);
2393 return err;
f424f664
JK		 2394}
2395
8ce589c7
EB		 2396static int f2fs_ioc_get_encryption_policy_ex(struct file *filp,
2397 unsigned long arg)
2398{
2399 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2400 return -EOPNOTSUPP;
2401
2402 return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg);
2403}
2404
2405static int f2fs_ioc_add_encryption_key(struct file *filp, unsigned long arg)
2406{
2407 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2408 return -EOPNOTSUPP;
2409
2410 return fscrypt_ioctl_add_key(filp, (void __user *)arg);
2411}
2412
2413static int f2fs_ioc_remove_encryption_key(struct file *filp, unsigned long arg)
2414{
2415 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2416 return -EOPNOTSUPP;
2417
2418 return fscrypt_ioctl_remove_key(filp, (void __user *)arg);
2419}
2420
2421static int f2fs_ioc_remove_encryption_key_all_users(struct file *filp,
2422 unsigned long arg)
2423{
2424 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2425 return -EOPNOTSUPP;
2426
2427 return fscrypt_ioctl_remove_key_all_users(filp, (void __user *)arg);
2428}
2429
2430static int f2fs_ioc_get_encryption_key_status(struct file *filp,
2431 unsigned long arg)
2432{
2433 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2434 return -EOPNOTSUPP;
2435
2436 return fscrypt_ioctl_get_key_status(filp, (void __user *)arg);
2437}
2438
ee446e1a
EB		 2439static int f2fs_ioc_get_encryption_nonce(struct file *filp, unsigned long arg)
2440{
2441 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2442 return -EOPNOTSUPP;
2443
2444 return fscrypt_ioctl_get_nonce(filp, (void __user *)arg);
2445}
2446
c1c1b583
CY		 2447static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
2448{
2449 struct inode *inode = file_inode(filp);
2450 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
d530d4d8 2451 __u32 sync;
7fb17fe4 2452 int ret;
c1c1b583
CY		 2453
2454 if (!capable(CAP_SYS_ADMIN))
2455 return -EPERM;
2456
d530d4d8 2457 if (get_user(sync, (__u32 __user *)arg))
c1c1b583
CY		 2458 return -EFAULT;
2459
d530d4d8
CY		 2460 if (f2fs_readonly(sbi->sb))
2461 return -EROFS;
c1c1b583 2462
7fb17fe4
CY		 2463 ret = mnt_want_write_file(filp);
2464 if (ret)
2465 return ret;
2466
d530d4d8 2467 if (!sync) {
fb24fea7 2468 if (!down_write_trylock(&sbi->gc_lock)) {
7fb17fe4
CY		 2469 ret = -EBUSY;
2470 goto out;
2471 }
d530d4d8 2472 } else {
fb24fea7 2473 down_write(&sbi->gc_lock);
c1c1b583
CY		 2474 }
2475
e066b83c 2476 ret = f2fs_gc(sbi, sync, true, NULL_SEGNO);
7fb17fe4
CY		 2477out:
2478 mnt_drop_write_file(filp);
2479 return ret;
c1c1b583
CY		 2480}
2481
34178b1b 2482static int __f2fs_ioc_gc_range(struct file *filp, struct f2fs_gc_range *range)
34dc77ad 2483{
34178b1b 2484 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
34dc77ad
JK		 2485 u64 end;
2486 int ret;
2487
2488 if (!capable(CAP_SYS_ADMIN))
2489 return -EPERM;
34dc77ad
JK		 2490 if (f2fs_readonly(sbi->sb))
2491 return -EROFS;
2492
34178b1b
CY		 2493 end = range->start + range->len;
2494 if (end < range->start || range->start < MAIN_BLKADDR(sbi) ||
fbbf7799 2495 end >= MAX_BLKADDR(sbi))
b82f6e34 2496 return -EINVAL;
b82f6e34 2497
34dc77ad
JK		 2498 ret = mnt_want_write_file(filp);
2499 if (ret)
2500 return ret;
2501
34dc77ad 2502do_more:
34178b1b 2503 if (!range->sync) {
fb24fea7 2504 if (!down_write_trylock(&sbi->gc_lock)) {
34dc77ad
JK		 2505 ret = -EBUSY;
2506 goto out;
2507 }
2508 } else {
fb24fea7 2509 down_write(&sbi->gc_lock);
34dc77ad
JK		 2510 }
2511
34178b1b 2512 ret = f2fs_gc(sbi, range->sync, true, GET_SEGNO(sbi, range->start));
97767500
QZ		 2513 if (ret) {
2514 if (ret == -EBUSY)
2515 ret = -EAGAIN;
2516 goto out;
2517 }
34178b1b
CY		 2518 range->start += BLKS_PER_SEC(sbi);
2519 if (range->start <= end)
34dc77ad
JK		 2520 goto do_more;
2521out:
2522 mnt_drop_write_file(filp);
2523 return ret;
2524}
2525
34178b1b
CY		 2526static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
2527{
2528 struct f2fs_gc_range range;
2529
2530 if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
2531 sizeof(range)))
2532 return -EFAULT;
2533 return __f2fs_ioc_gc_range(filp, &range);
2534}
2535
059c0648 2536static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
456b88e4
CY		 2537{
2538 struct inode *inode = file_inode(filp);
2539 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7fb17fe4 2540 int ret;
456b88e4
CY		 2541
2542 if (!capable(CAP_SYS_ADMIN))
2543 return -EPERM;
2544
2545 if (f2fs_readonly(sbi->sb))
2546 return -EROFS;
2547
4354994f 2548 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
dcbb4c10 2549 f2fs_info(sbi, "Skipping Checkpoint. Checkpoints currently disabled.");
4354994f
DR		 2550 return -EINVAL;
2551 }
2552
7fb17fe4
CY		 2553 ret = mnt_want_write_file(filp);
2554 if (ret)
2555 return ret;
2556
2557 ret = f2fs_sync_fs(sbi->sb, 1);
2558
2559 mnt_drop_write_file(filp);
2560 return ret;
456b88e4
CY		 2561}
2562
d323d005
CY		 2563static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
2564 struct file *filp,
2565 struct f2fs_defragment *range)
2566{
2567 struct inode *inode = file_inode(filp);
f3d98e74 2568 struct f2fs_map_blocks map = { .m_next_extent = NULL,
f4f0b677
JZ		 2569 .m_seg_type = NO_CHECK_TYPE ,
2570 .m_may_create = false };
1061fd48 2571 struct extent_info ei = {0, 0, 0};
f3d98e74 2572 pgoff_t pg_start, pg_end, next_pgofs;
3519e3f9 2573 unsigned int blk_per_seg = sbi->blocks_per_seg;
d323d005 2574 unsigned int total = 0, sec_num;
d323d005
CY		 2575 block_t blk_end = 0;
2576 bool fragmented = false;
2577 int err;
2578
2579 /* if in-place-update policy is enabled, don't waste time here */
4d57b86d 2580 if (f2fs_should_update_inplace(inode, NULL))
d323d005
CY		 2581 return -EINVAL;
2582
09cbfeaf
KS		 2583 pg_start = range->start >> PAGE_SHIFT;
2584 pg_end = (range->start + range->len) >> PAGE_SHIFT;
d323d005 2585
2c4db1a6 2586 f2fs_balance_fs(sbi, true);
d323d005 2587
5955102c 2588 inode_lock(inode);
d323d005
CY		 2589
2590 /* writeback all dirty pages in the range */
2591 err = filemap_write_and_wait_range(inode->i_mapping, range->start,
d8fe4f0e 2592 range->start + range->len - 1);
d323d005
CY		 2593 if (err)
2594 goto out;
2595
2596 /*
2597 * lookup mapping info in extent cache, skip defragmenting if physical
2598 * block addresses are continuous.
2599 */
2600 if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) {
2601 if (ei.fofs + ei.len >= pg_end)
2602 goto out;
2603 }
2604
2605 map.m_lblk = pg_start;
f3d98e74 2606 map.m_next_pgofs = &next_pgofs;
d323d005
CY		 2607
2608 /*
2609 * lookup mapping info in dnode page cache, skip defragmenting if all
2610 * physical block addresses are continuous even if there are hole(s)
2611 * in logical blocks.
2612 */
2613 while (map.m_lblk < pg_end) {
a1c1e9b7 2614 map.m_len = pg_end - map.m_lblk;
f2220c7f 2615 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
d323d005
CY		 2616 if (err)
2617 goto out;
2618
2619 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
f3d98e74 2620 map.m_lblk = next_pgofs;
d323d005
CY		 2621 continue;
2622 }
2623
25a912e5 2624 if (blk_end && blk_end != map.m_pblk)
d323d005 2625 fragmented = true;
25a912e5
CY		 2626
2627 /* record total count of block that we're going to move */
2628 total += map.m_len;
2629
d323d005
CY		 2630 blk_end = map.m_pblk + map.m_len;
2631
2632 map.m_lblk += map.m_len;
d323d005
CY		 2633 }
2634
d3a1a0e1
CY		 2635 if (!fragmented) {
2636 total = 0;
d323d005 2637 goto out;
d3a1a0e1 2638 }
d323d005 2639
f91108b8 2640 sec_num = DIV_ROUND_UP(total, BLKS_PER_SEC(sbi));
d323d005
CY		 2641
2642 /*
2643 * make sure there are enough free section for LFS allocation, this can
2644 * avoid defragment running in SSR mode when free section are allocated
2645 * intensively
2646 */
7f3037a5 2647 if (has_not_enough_free_secs(sbi, 0, sec_num)) {
d323d005
CY		 2648 err = -EAGAIN;
2649 goto out;
2650 }
2651
25a912e5
CY		 2652 map.m_lblk = pg_start;
2653 map.m_len = pg_end - pg_start;
2654 total = 0;
2655
d323d005
CY		 2656 while (map.m_lblk < pg_end) {
2657 pgoff_t idx;
2658 int cnt = 0;
2659
2660do_map:
a1c1e9b7 2661 map.m_len = pg_end - map.m_lblk;
f2220c7f 2662 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
d323d005
CY		 2663 if (err)
2664 goto clear_out;
2665
2666 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
f3d98e74 2667 map.m_lblk = next_pgofs;
d3a1a0e1 2668 goto check;
d323d005
CY		 2669 }
2670
91942321 2671 set_inode_flag(inode, FI_DO_DEFRAG);
d323d005
CY		 2672
2673 idx = map.m_lblk;
2674 while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) {
2675 struct page *page;
2676
4d57b86d 2677 page = f2fs_get_lock_data_page(inode, idx, true);
d323d005
CY		 2678 if (IS_ERR(page)) {
2679 err = PTR_ERR(page);
2680 goto clear_out;
2681 }
2682
2683 set_page_dirty(page);
2684 f2fs_put_page(page, 1);
2685
2686 idx++;
2687 cnt++;
2688 total++;
2689 }
2690
2691 map.m_lblk = idx;
d3a1a0e1
CY		 2692check:
2693 if (map.m_lblk < pg_end && cnt < blk_per_seg)
d323d005
CY		 2694 goto do_map;
2695
91942321 2696 clear_inode_flag(inode, FI_DO_DEFRAG);
d323d005
CY		 2697
2698 err = filemap_fdatawrite(inode->i_mapping);
2699 if (err)
2700 goto out;
2701 }
2702clear_out:
91942321 2703 clear_inode_flag(inode, FI_DO_DEFRAG);
d323d005 2704out:
5955102c 2705 inode_unlock(inode);
d323d005 2706 if (!err)
09cbfeaf 2707 range->len = (u64)total << PAGE_SHIFT;
d323d005
CY		 2708 return err;
2709}
2710
2711static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
2712{
2713 struct inode *inode = file_inode(filp);
2714 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2715 struct f2fs_defragment range;
2716 int err;
2717
2718 if (!capable(CAP_SYS_ADMIN))
2719 return -EPERM;
2720
7eab0c0d 2721 if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode))
d323d005
CY		 2722 return -EINVAL;
2723
d7563861
KM		 2724 if (f2fs_readonly(sbi->sb))
2725 return -EROFS;
d323d005
CY		 2726
2727 if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
d7563861
KM		 2728 sizeof(range)))
2729 return -EFAULT;
d323d005
CY		 2730
2731 /* verify alignment of offset & size */
d7563861
KM		 2732 if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1))
2733 return -EINVAL;
d323d005 2734
1941d7bc 2735 if (unlikely((range.start + range.len) >> PAGE_SHIFT >
d7563861
KM		 2736 sbi->max_file_blocks))
2737 return -EINVAL;
2738
2739 err = mnt_want_write_file(filp);
2740 if (err)
2741 return err;
1941d7bc 2742
d323d005 2743 err = f2fs_defragment_range(sbi, filp, &range);
d7563861
KM		 2744 mnt_drop_write_file(filp);
2745
d0239e1b 2746 f2fs_update_time(sbi, REQ_TIME);
d323d005 2747 if (err < 0)
d7563861 2748 return err;
d323d005
CY		 2749
2750 if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
2751 sizeof(range)))
d7563861
KM		 2752 return -EFAULT;
2753
2754 return 0;
d323d005
CY		 2755}
2756
4dd6f977
JK		 2757static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
2758 struct file *file_out, loff_t pos_out, size_t len)
2759{
2760 struct inode *src = file_inode(file_in);
2761 struct inode *dst = file_inode(file_out);
2762 struct f2fs_sb_info *sbi = F2FS_I_SB(src);
2763 size_t olen = len, dst_max_i_size = 0;
2764 size_t dst_osize;
2765 int ret;
2766
2767 if (file_in->f_path.mnt != file_out->f_path.mnt ||
2768 src->i_sb != dst->i_sb)
2769 return -EXDEV;
2770
2771 if (unlikely(f2fs_readonly(src->i_sb)))
2772 return -EROFS;
2773
fe8494bf
CY		 2774 if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
2775 return -EINVAL;
4dd6f977 2776
62230e0d 2777 if (IS_ENCRYPTED(src) || IS_ENCRYPTED(dst))
4dd6f977
JK		 2778 return -EOPNOTSUPP;
2779
aad1383c
DR		 2780 if (pos_out < 0 || pos_in < 0)
2781 return -EINVAL;
2782
d95fd91c
FL		 2783 if (src == dst) {
2784 if (pos_in == pos_out)
2785 return 0;
2786 if (pos_out > pos_in && pos_out < pos_in + len)
2787 return -EINVAL;
2788 }
2789
4dd6f977 2790 inode_lock(src);
20a3d61d 2791 if (src != dst) {
bb06664a
CY		 2792 ret = -EBUSY;
2793 if (!inode_trylock(dst))
2794 goto out;
20a3d61d 2795 }
4dd6f977
JK		 2796
2797 ret = -EINVAL;
2798 if (pos_in + len > src->i_size || pos_in + len < pos_in)
2799 goto out_unlock;
2800 if (len == 0)
2801 olen = len = src->i_size - pos_in;
2802 if (pos_in + len == src->i_size)
2803 len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in;
2804 if (len == 0) {
2805 ret = 0;
2806 goto out_unlock;
2807 }
2808
2809 dst_osize = dst->i_size;
2810 if (pos_out + olen > dst->i_size)
2811 dst_max_i_size = pos_out + olen;
2812
2813 /* verify the end result is block aligned */
2814 if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) ||
2815 !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) ||
2816 !IS_ALIGNED(pos_out, F2FS_BLKSIZE))
2817 goto out_unlock;
2818
2819 ret = f2fs_convert_inline_inode(src);
2820 if (ret)
2821 goto out_unlock;
2822
2823 ret = f2fs_convert_inline_inode(dst);
2824 if (ret)
2825 goto out_unlock;
2826
2827 /* write out all dirty pages from offset */
2828 ret = filemap_write_and_wait_range(src->i_mapping,
2829 pos_in, pos_in + len);
2830 if (ret)
2831 goto out_unlock;
2832
2833 ret = filemap_write_and_wait_range(dst->i_mapping,
2834 pos_out, pos_out + len);
2835 if (ret)
2836 goto out_unlock;
2837
2838 f2fs_balance_fs(sbi, true);
6f8d4455
JK		 2839
2840 down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2841 if (src != dst) {
2842 ret = -EBUSY;
2843 if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE]))
2844 goto out_src;
2845 }
2846
4dd6f977 2847 f2fs_lock_op(sbi);
61e4da11
FL		 2848 ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
2849 pos_out >> F2FS_BLKSIZE_BITS,
2850 len >> F2FS_BLKSIZE_BITS, false);
4dd6f977
JK		 2851
2852 if (!ret) {
2853 if (dst_max_i_size)
2854 f2fs_i_size_write(dst, dst_max_i_size);
2855 else if (dst_osize != dst->i_size)
2856 f2fs_i_size_write(dst, dst_osize);
2857 }
2858 f2fs_unlock_op(sbi);
6f8d4455
JK		 2859
2860 if (src != dst)
b2532c69 2861 up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]);
6f8d4455
JK		 2862out_src:
2863 up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2864out_unlock:
2865 if (src != dst)
4dd6f977 2866 inode_unlock(dst);
20a3d61d 2867out:
4dd6f977
JK		 2868 inode_unlock(src);
2869 return ret;
2870}
2871
34178b1b
CY		 2872static int __f2fs_ioc_move_range(struct file *filp,
2873 struct f2fs_move_range *range)
4dd6f977 2874{
4dd6f977
JK		 2875 struct fd dst;
2876 int err;
2877
2878 if (!(filp->f_mode & FMODE_READ) ||
2879 !(filp->f_mode & FMODE_WRITE))
2880 return -EBADF;
2881
34178b1b 2882 dst = fdget(range->dst_fd);
4dd6f977
JK		 2883 if (!dst.file)
2884 return -EBADF;
2885
2886 if (!(dst.file->f_mode & FMODE_WRITE)) {
2887 err = -EBADF;
2888 goto err_out;
2889 }
2890
2891 err = mnt_want_write_file(filp);
2892 if (err)
2893 goto err_out;
2894
34178b1b
CY		 2895 err = f2fs_move_file_range(filp, range->pos_in, dst.file,
2896 range->pos_out, range->len);
4dd6f977
JK		 2897
2898 mnt_drop_write_file(filp);
4dd6f977
JK		 2899err_out:
2900 fdput(dst);
2901 return err;
2902}
2903
34178b1b
CY		 2904static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
2905{
2906 struct f2fs_move_range range;
2907
2908 if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
2909 sizeof(range)))
2910 return -EFAULT;
2911 return __f2fs_ioc_move_range(filp, &range);
2912}
2913
e066b83c
JK		 2914static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
2915{
2916 struct inode *inode = file_inode(filp);
2917 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2918 struct sit_info *sm = SIT_I(sbi);
2919 unsigned int start_segno = 0, end_segno = 0;
2920 unsigned int dev_start_segno = 0, dev_end_segno = 0;
2921 struct f2fs_flush_device range;
2922 int ret;
2923
2924 if (!capable(CAP_SYS_ADMIN))
2925 return -EPERM;
2926
2927 if (f2fs_readonly(sbi->sb))
2928 return -EROFS;
2929
4354994f
DR		 2930 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2931 return -EINVAL;
2932
e066b83c
JK		 2933 if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg,
2934 sizeof(range)))
2935 return -EFAULT;
2936
0916878d 2937 if (!f2fs_is_multi_device(sbi) || sbi->s_ndevs - 1 <= range.dev_num ||
2c70c5e3 2938 __is_large_section(sbi)) {
dcbb4c10
JP		 2939 f2fs_warn(sbi, "Can't flush %u in %d for segs_per_sec %u != 1",
2940 range.dev_num, sbi->s_ndevs, sbi->segs_per_sec);
e066b83c
JK		 2941 return -EINVAL;
2942 }
2943
2944 ret = mnt_want_write_file(filp);
2945 if (ret)
2946 return ret;
2947
2948 if (range.dev_num != 0)
2949 dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk);
2950 dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk);
2951
2952 start_segno = sm->last_victim[FLUSH_DEVICE];
2953 if (start_segno < dev_start_segno || start_segno >= dev_end_segno)
2954 start_segno = dev_start_segno;
2955 end_segno = min(start_segno + range.segments, dev_end_segno);
2956
2957 while (start_segno < end_segno) {
fb24fea7 2958 if (!down_write_trylock(&sbi->gc_lock)) {
e066b83c
JK		 2959 ret = -EBUSY;
2960 goto out;
2961 }
2962 sm->last_victim[GC_CB] = end_segno + 1;
2963 sm->last_victim[GC_GREEDY] = end_segno + 1;
2964 sm->last_victim[ALLOC_NEXT] = end_segno + 1;
2965 ret = f2fs_gc(sbi, true, true, start_segno);
2966 if (ret == -EAGAIN)
2967 ret = 0;
2968 else if (ret < 0)
2969 break;
2970 start_segno++;
2971 }
2972out:
2973 mnt_drop_write_file(filp);
2974 return ret;
2975}
2976
e65ef207
JK		 2977static int f2fs_ioc_get_features(struct file *filp, unsigned long arg)
2978{
2979 struct inode *inode = file_inode(filp);
2980 u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature);
2981
2982 /* Must validate to set it with SQLite behavior in Android. */
2983 sb_feature |= F2FS_FEATURE_ATOMIC_WRITE;
2984
2985 return put_user(sb_feature, (u32 __user *)arg);
2986}
e066b83c 2987
2c1d0305 2988#ifdef CONFIG_QUOTA
78130819
CY		 2989int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
2990{
2991 struct dquot *transfer_to[MAXQUOTAS] = {};
2992 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2993 struct super_block *sb = sbi->sb;
2994 int err = 0;
2995
2996 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
2997 if (!IS_ERR(transfer_to[PRJQUOTA])) {
2998 err = __dquot_transfer(inode, transfer_to);
2999 if (err)
3000 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
3001 dqput(transfer_to[PRJQUOTA]);
3002 }
3003 return err;
3004}
3005
2c1d0305
CY		 3006static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
3007{
3008 struct inode *inode = file_inode(filp);
3009 struct f2fs_inode_info *fi = F2FS_I(inode);
3010 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2c1d0305
CY		 3011 struct page *ipage;
3012 kprojid_t kprojid;
3013 int err;
3014
7beb01f7 3015 if (!f2fs_sb_has_project_quota(sbi)) {
2c1d0305
CY		 3016 if (projid != F2FS_DEF_PROJID)
3017 return -EOPNOTSUPP;
3018 else
3019 return 0;
3020 }
3021
3022 if (!f2fs_has_extra_attr(inode))
3023 return -EOPNOTSUPP;
3024
3025 kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
3026
3027 if (projid_eq(kprojid, F2FS_I(inode)->i_projid))
3028 return 0;
3029
2c1d0305 3030 err = -EPERM;
2c1d0305
CY		 3031 /* Is it quota file? Do not allow user to mess with it */
3032 if (IS_NOQUOTA(inode))
c8e92757 3033 return err;
2c1d0305 3034
4d57b86d 3035 ipage = f2fs_get_node_page(sbi, inode->i_ino);
c8e92757
WS		 3036 if (IS_ERR(ipage))
3037 return PTR_ERR(ipage);
2c1d0305
CY		 3038
3039 if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize,
3040 i_projid)) {
3041 err = -EOVERFLOW;
3042 f2fs_put_page(ipage, 1);
c8e92757 3043 return err;
2c1d0305
CY		 3044 }
3045 f2fs_put_page(ipage, 1);
3046
c22aecd7
CY		 3047 err = dquot_initialize(inode);
3048 if (err)
c8e92757 3049 return err;
2c1d0305 3050
78130819
CY		 3051 f2fs_lock_op(sbi);
3052 err = f2fs_transfer_project_quota(inode, kprojid);
3053 if (err)
3054 goto out_unlock;
2c1d0305
CY		 3055
3056 F2FS_I(inode)->i_projid = kprojid;
3057 inode->i_ctime = current_time(inode);
2c1d0305 3058 f2fs_mark_inode_dirty_sync(inode, true);
78130819
CY		 3059out_unlock:
3060 f2fs_unlock_op(sbi);
2c1d0305
CY		 3061 return err;
3062}
3063#else
78130819
CY		 3064int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
3065{
3066 return 0;
3067}
3068
2c1d0305
CY		 3069static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
3070{
3071 if (projid != F2FS_DEF_PROJID)
3072 return -EOPNOTSUPP;
3073 return 0;
3074}
3075#endif
3076
36098557
EB		 3077/* FS_IOC_FSGETXATTR and FS_IOC_FSSETXATTR support */
3078
3079/*
3080 * To make a new on-disk f2fs i_flag gettable via FS_IOC_FSGETXATTR and settable
3081 * via FS_IOC_FSSETXATTR, add an entry for it to f2fs_xflags_map[], and add its
3082 * FS_XFLAG_* equivalent to F2FS_SUPPORTED_XFLAGS.
3083 */
3084
3085static const struct {
3086 u32 iflag;
3087 u32 xflag;
3088} f2fs_xflags_map[] = {
3089 { F2FS_SYNC_FL, FS_XFLAG_SYNC },
3090 { F2FS_IMMUTABLE_FL, FS_XFLAG_IMMUTABLE },
3091 { F2FS_APPEND_FL, FS_XFLAG_APPEND },
3092 { F2FS_NODUMP_FL, FS_XFLAG_NODUMP },
3093 { F2FS_NOATIME_FL, FS_XFLAG_NOATIME },
3094 { F2FS_PROJINHERIT_FL, FS_XFLAG_PROJINHERIT },
3095};
3096
3097#define F2FS_SUPPORTED_XFLAGS ( \
3098 FS_XFLAG_SYNC | \
3099 FS_XFLAG_IMMUTABLE | \
3100 FS_XFLAG_APPEND | \
3101 FS_XFLAG_NODUMP | \
3102 FS_XFLAG_NOATIME | \
3103 FS_XFLAG_PROJINHERIT)
3104
3105/* Convert f2fs on-disk i_flags to FS_IOC_FS{GET,SET}XATTR flags */
3106static inline u32 f2fs_iflags_to_xflags(u32 iflags)
3107{
3108 u32 xflags = 0;
3109 int i;
3110
3111 for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++)
3112 if (iflags & f2fs_xflags_map[i].iflag)
3113 xflags |= f2fs_xflags_map[i].xflag;
3114
2c1d0305
CY		 3115 return xflags;
3116}
3117
36098557
EB		 3118/* Convert FS_IOC_FS{GET,SET}XATTR flags to f2fs on-disk i_flags */
3119static inline u32 f2fs_xflags_to_iflags(u32 xflags)
2c1d0305 3120{
36098557
EB		 3121 u32 iflags = 0;
3122 int i;
2c1d0305 3123
36098557
EB		 3124 for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++)
3125 if (xflags & f2fs_xflags_map[i].xflag)
3126 iflags |= f2fs_xflags_map[i].iflag;
2c1d0305
CY		 3127
3128 return iflags;
3129}
3130
6fc93c4e 3131static void f2fs_fill_fsxattr(struct inode *inode, struct fsxattr *fa)
2c1d0305 3132{
2c1d0305 3133 struct f2fs_inode_info *fi = F2FS_I(inode);
2c1d0305 3134
6fc93c4e 3135 simple_fill_fsxattr(fa, f2fs_iflags_to_xflags(fi->i_flags));
2c1d0305 3136
7beb01f7 3137 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)))
6fc93c4e 3138 fa->fsx_projid = from_kprojid(&init_user_ns, fi->i_projid);
2c1d0305
CY		 3139}
3140
6fc93c4e 3141static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg)
c8e92757 3142{
6fc93c4e
EB		 3143 struct inode *inode = file_inode(filp);
3144 struct fsxattr fa;
c8e92757 3145
6fc93c4e 3146 f2fs_fill_fsxattr(inode, &fa);
c8e92757 3147
6fc93c4e
EB		 3148 if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa)))
3149 return -EFAULT;
c8e92757
WS		 3150 return 0;
3151}
3152
2c1d0305
CY		 3153static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg)
3154{
3155 struct inode *inode = file_inode(filp);
6fc93c4e 3156 struct fsxattr fa, old_fa;
36098557 3157 u32 iflags;
2c1d0305
CY		 3158 int err;
3159
3160 if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa)))
3161 return -EFAULT;
3162
3163 /* Make sure caller has proper permission */
21cb47be 3164 if (!inode_owner_or_capable(&init_user_ns, inode))
2c1d0305
CY		 3165 return -EACCES;
3166
36098557 3167 if (fa.fsx_xflags & ~F2FS_SUPPORTED_XFLAGS)
2c1d0305
CY		 3168 return -EOPNOTSUPP;
3169
36098557
EB		 3170 iflags = f2fs_xflags_to_iflags(fa.fsx_xflags);
3171 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
2c1d0305
CY		 3172 return -EOPNOTSUPP;
3173
3174 err = mnt_want_write_file(filp);
3175 if (err)
3176 return err;
3177
3178 inode_lock(inode);
6fc93c4e
EB		 3179
3180 f2fs_fill_fsxattr(inode, &old_fa);
3181 err = vfs_ioc_fssetxattr_check(inode, &old_fa, &fa);
c8e92757
WS		 3182 if (err)
3183 goto out;
6fc93c4e 3184
36098557
EB		 3185 err = f2fs_setflags_common(inode, iflags,
3186 f2fs_xflags_to_iflags(F2FS_SUPPORTED_XFLAGS));
2c1d0305 3187 if (err)
c8e92757 3188 goto out;
2c1d0305
CY		 3189
3190 err = f2fs_ioc_setproject(filp, fa.fsx_projid);
c8e92757
WS		 3191out:
3192 inode_unlock(inode);
3193 mnt_drop_write_file(filp);
3194 return err;
2c1d0305 3195}
e066b83c 3196
1ad71a27
JK		 3197int f2fs_pin_file_control(struct inode *inode, bool inc)
3198{
3199 struct f2fs_inode_info *fi = F2FS_I(inode);
3200 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3201
3202 /* Use i_gc_failures for normal file as a risk signal. */
3203 if (inc)
2ef79ecb
CY		 3204 f2fs_i_gc_failures_write(inode,
3205 fi->i_gc_failures[GC_FAILURE_PIN] + 1);
1ad71a27 3206
2ef79ecb 3207 if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) {
dcbb4c10
JP		 3208 f2fs_warn(sbi, "%s: Enable GC = ino %lx after %x GC trials",
3209 __func__, inode->i_ino,
3210 fi->i_gc_failures[GC_FAILURE_PIN]);
1ad71a27
JK		 3211 clear_inode_flag(inode, FI_PIN_FILE);
3212 return -EAGAIN;
3213 }
3214 return 0;
3215}
3216
3217static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
3218{
3219 struct inode *inode = file_inode(filp);
3220 __u32 pin;
3221 int ret = 0;
3222
1ad71a27
JK		 3223 if (get_user(pin, (__u32 __user *)arg))
3224 return -EFAULT;
3225
3226 if (!S_ISREG(inode->i_mode))
3227 return -EINVAL;
3228
3229 if (f2fs_readonly(F2FS_I_SB(inode)->sb))
3230 return -EROFS;
3231
3232 ret = mnt_want_write_file(filp);
3233 if (ret)
3234 return ret;
3235
3236 inode_lock(inode);
3237
4d57b86d 3238 if (f2fs_should_update_outplace(inode, NULL)) {
bb9e3bb8
CY		 3239 ret = -EINVAL;
3240 goto out;
3241 }
3242
1ad71a27
JK		 3243 if (!pin) {
3244 clear_inode_flag(inode, FI_PIN_FILE);
30933364 3245 f2fs_i_gc_failures_write(inode, 0);
1ad71a27
JK		 3246 goto done;
3247 }
3248
3249 if (f2fs_pin_file_control(inode, false)) {
3250 ret = -EAGAIN;
3251 goto out;
3252 }
4c8ff709 3253
1ad71a27
JK		 3254 ret = f2fs_convert_inline_inode(inode);
3255 if (ret)
3256 goto out;
3257
78134d03 3258 if (!f2fs_disable_compressed_file(inode)) {
4c8ff709
CY		 3259 ret = -EOPNOTSUPP;
3260 goto out;
3261 }
3262
1ad71a27 3263 set_inode_flag(inode, FI_PIN_FILE);
2ef79ecb 3264 ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
1ad71a27
JK		 3265done:
3266 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3267out:
3268 inode_unlock(inode);
3269 mnt_drop_write_file(filp);
3270 return ret;
3271}
3272
3273static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg)
3274{
3275 struct inode *inode = file_inode(filp);
3276 __u32 pin = 0;
3277
3278 if (is_inode_flag_set(inode, FI_PIN_FILE))
2ef79ecb 3279 pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
1ad71a27
JK		 3280 return put_user(pin, (u32 __user *)arg);
3281}
3282
c4020b2d
CY		 3283int f2fs_precache_extents(struct inode *inode)
3284{
3285 struct f2fs_inode_info *fi = F2FS_I(inode);
3286 struct f2fs_map_blocks map;
3287 pgoff_t m_next_extent;
3288 loff_t end;
3289 int err;
3290
3291 if (is_inode_flag_set(inode, FI_NO_EXTENT))
3292 return -EOPNOTSUPP;
3293
3294 map.m_lblk = 0;
3295 map.m_next_pgofs = NULL;
3296 map.m_next_extent = &m_next_extent;
3297 map.m_seg_type = NO_CHECK_TYPE;
f4f0b677 3298 map.m_may_create = false;
c4020b2d
CY		 3299 end = F2FS_I_SB(inode)->max_file_blocks;
3300
3301 while (map.m_lblk < end) {
3302 map.m_len = end - map.m_lblk;
3303
b2532c69 3304 down_write(&fi->i_gc_rwsem[WRITE]);
c4020b2d 3305 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE);
b2532c69 3306 up_write(&fi->i_gc_rwsem[WRITE]);
c4020b2d
CY		 3307 if (err)
3308 return err;
3309
3310 map.m_lblk = m_next_extent;
3311 }
3312
3313 return err;
3314}
3315
3316static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg)
3317{
3318 return f2fs_precache_extents(file_inode(filp));
3319}
3320
04f0b2ea
QS		 3321static int f2fs_ioc_resize_fs(struct file *filp, unsigned long arg)
3322{
3323 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
3324 __u64 block_count;
04f0b2ea
QS		 3325
3326 if (!capable(CAP_SYS_ADMIN))
3327 return -EPERM;
3328
3329 if (f2fs_readonly(sbi->sb))
3330 return -EROFS;
3331
3332 if (copy_from_user(&block_count, (void __user *)arg,
3333 sizeof(block_count)))
3334 return -EFAULT;
3335
b4b10061 3336 return f2fs_resize_fs(sbi, block_count);
04f0b2ea
QS		 3337}
3338
95ae251f
EB		 3339static int f2fs_ioc_enable_verity(struct file *filp, unsigned long arg)
3340{
3341 struct inode *inode = file_inode(filp);
3342
3343 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3344
3345 if (!f2fs_sb_has_verity(F2FS_I_SB(inode))) {
3346 f2fs_warn(F2FS_I_SB(inode),
3347 "Can't enable fs-verity on inode %lu: the verity feature is not enabled on this filesystem.\n",
3348 inode->i_ino);
3349 return -EOPNOTSUPP;
3350 }
3351
3352 return fsverity_ioctl_enable(filp, (const void __user *)arg);
3353}
3354
3355static int f2fs_ioc_measure_verity(struct file *filp, unsigned long arg)
3356{
3357 if (!f2fs_sb_has_verity(F2FS_I_SB(file_inode(filp))))
3358 return -EOPNOTSUPP;
3359
3360 return fsverity_ioctl_measure(filp, (void __user *)arg);
3361}
3362
3357af8f 3363static int f2fs_ioc_getfslabel(struct file *filp, unsigned long arg)
4507847c
CY		 3364{
3365 struct inode *inode = file_inode(filp);
3366 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3367 char *vbuf;
3368 int count;
3369 int err = 0;
3370
3371 vbuf = f2fs_kzalloc(sbi, MAX_VOLUME_NAME, GFP_KERNEL);
3372 if (!vbuf)
3373 return -ENOMEM;
3374
3375 down_read(&sbi->sb_lock);
3376 count = utf16s_to_utf8s(sbi->raw_super->volume_name,
3377 ARRAY_SIZE(sbi->raw_super->volume_name),
3378 UTF16_LITTLE_ENDIAN, vbuf, MAX_VOLUME_NAME);
3379 up_read(&sbi->sb_lock);
3380
3381 if (copy_to_user((char __user *)arg, vbuf,
3382 min(FSLABEL_MAX, count)))
3383 err = -EFAULT;
3384
c8eb7024 3385 kfree(vbuf);
4507847c
CY		 3386 return err;
3387}
3388
3357af8f 3389static int f2fs_ioc_setfslabel(struct file *filp, unsigned long arg)
4507847c
CY		 3390{
3391 struct inode *inode = file_inode(filp);
3392 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3393 char *vbuf;
3394 int err = 0;
3395
3396 if (!capable(CAP_SYS_ADMIN))
3397 return -EPERM;
3398
3399 vbuf = strndup_user((const char __user *)arg, FSLABEL_MAX);
3400 if (IS_ERR(vbuf))
3401 return PTR_ERR(vbuf);
3402
3403 err = mnt_want_write_file(filp);
3404 if (err)
3405 goto out;
3406
3407 down_write(&sbi->sb_lock);
3408
3409 memset(sbi->raw_super->volume_name, 0,
3410 sizeof(sbi->raw_super->volume_name));
3411 utf8s_to_utf16s(vbuf, strlen(vbuf), UTF16_LITTLE_ENDIAN,
3412 sbi->raw_super->volume_name,
3413 ARRAY_SIZE(sbi->raw_super->volume_name));
3414
3415 err = f2fs_commit_super(sbi, false);
3416
3417 up_write(&sbi->sb_lock);
3418
3419 mnt_drop_write_file(filp);
3420out:
3421 kfree(vbuf);
3422 return err;
3423}
3424
439dfb10
CY		 3425static int f2fs_get_compress_blocks(struct file *filp, unsigned long arg)
3426{
3427 struct inode *inode = file_inode(filp);
3428 __u64 blocks;
3429
3430 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3431 return -EOPNOTSUPP;
3432
3433 if (!f2fs_compressed_file(inode))
3434 return -EINVAL;
3435
c2759eba 3436 blocks = atomic_read(&F2FS_I(inode)->i_compr_blocks);
439dfb10
CY		 3437 return put_user(blocks, (u64 __user *)arg);
3438}
3439
ef8d563f
CY		 3440static int release_compress_blocks(struct dnode_of_data *dn, pgoff_t count)
3441{
3442 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
3443 unsigned int released_blocks = 0;
3444 int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
3445 block_t blkaddr;
3446 int i;
3447
3448 for (i = 0; i < count; i++) {
3449 blkaddr = data_blkaddr(dn->inode, dn->node_page,
3450 dn->ofs_in_node + i);
3451
3452 if (!__is_valid_data_blkaddr(blkaddr))
3453 continue;
3454 if (unlikely(!f2fs_is_valid_blkaddr(sbi, blkaddr,
3455 DATA_GENERIC_ENHANCE)))
3456 return -EFSCORRUPTED;
3457 }
3458
3459 while (count) {
3460 int compr_blocks = 0;
3461
3462 for (i = 0; i < cluster_size; i++, dn->ofs_in_node++) {
3463 blkaddr = f2fs_data_blkaddr(dn);
3464
3465 if (i == 0) {
3466 if (blkaddr == COMPRESS_ADDR)
3467 continue;
3468 dn->ofs_in_node += cluster_size;
3469 goto next;
3470 }
3471
3472 if (__is_valid_data_blkaddr(blkaddr))
3473 compr_blocks++;
3474
3475 if (blkaddr != NEW_ADDR)
3476 continue;
3477
3478 dn->data_blkaddr = NULL_ADDR;
3479 f2fs_set_data_blkaddr(dn);
3480 }
3481
3482 f2fs_i_compr_blocks_update(dn->inode, compr_blocks, false);
3483 dec_valid_block_count(sbi, dn->inode,
3484 cluster_size - compr_blocks);
3485
3486 released_blocks += cluster_size - compr_blocks;
3487next:
3488 count -= cluster_size;
3489 }
3490
3491 return released_blocks;
3492}
3493
3494static int f2fs_release_compress_blocks(struct file *filp, unsigned long arg)
3495{
3496 struct inode *inode = file_inode(filp);
3497 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3498 pgoff_t page_idx = 0, last_idx;
3499 unsigned int released_blocks = 0;
3500 int ret;
3501 int writecount;
3502
3503 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3504 return -EOPNOTSUPP;
3505
3506 if (!f2fs_compressed_file(inode))
3507 return -EINVAL;
3508
3509 if (f2fs_readonly(sbi->sb))
3510 return -EROFS;
3511
3512 ret = mnt_want_write_file(filp);
3513 if (ret)
3514 return ret;
3515
3516 f2fs_balance_fs(F2FS_I_SB(inode), true);
3517
3518 inode_lock(inode);
3519
3520 writecount = atomic_read(&inode->i_writecount);
8c8cf26a
DJ		 3521 if ((filp->f_mode & FMODE_WRITE && writecount != 1) ||
3522 (!(filp->f_mode & FMODE_WRITE) && writecount)) {
ef8d563f
CY		 3523 ret = -EBUSY;
3524 goto out;
3525 }
3526
3527 if (IS_IMMUTABLE(inode)) {
3528 ret = -EINVAL;
3529 goto out;
3530 }
3531
3532 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
3533 if (ret)
3534 goto out;
3535
ef8d563f
CY		 3536 F2FS_I(inode)->i_flags |= F2FS_IMMUTABLE_FL;
3537 f2fs_set_inode_flags(inode);
3538 inode->i_ctime = current_time(inode);
3539 f2fs_mark_inode_dirty_sync(inode, true);
3540
c2759eba 3541 if (!atomic_read(&F2FS_I(inode)->i_compr_blocks))
567c4bf5
DJ		 3542 goto out;
3543
ef8d563f
CY		 3544 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3545 down_write(&F2FS_I(inode)->i_mmap_sem);
3546
3547 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
3548
3549 while (page_idx < last_idx) {
3550 struct dnode_of_data dn;
3551 pgoff_t end_offset, count;
3552
3553 set_new_dnode(&dn, inode, NULL, NULL, 0);
3554 ret = f2fs_get_dnode_of_data(&dn, page_idx, LOOKUP_NODE);
3555 if (ret) {
3556 if (ret == -ENOENT) {
3557 page_idx = f2fs_get_next_page_offset(&dn,
3558 page_idx);
3559 ret = 0;
3560 continue;
3561 }
3562 break;
3563 }
3564
3565 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3566 count = min(end_offset - dn.ofs_in_node, last_idx - page_idx);
4fec3fc0 3567 count = round_up(count, F2FS_I(inode)->i_cluster_size);
ef8d563f
CY		 3568
3569 ret = release_compress_blocks(&dn, count);
3570
3571 f2fs_put_dnode(&dn);
3572
3573 if (ret < 0)
3574 break;
3575
3576 page_idx += count;
3577 released_blocks += ret;
3578 }
3579
3580 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3581 up_write(&F2FS_I(inode)->i_mmap_sem);
3582out:
3583 inode_unlock(inode);
3584
3585 mnt_drop_write_file(filp);
3586
3587 if (ret >= 0) {
3588 ret = put_user(released_blocks, (u64 __user *)arg);
c2759eba
DJ		 3589 } else if (released_blocks &&
3590 atomic_read(&F2FS_I(inode)->i_compr_blocks)) {
ef8d563f
CY		 3591 set_sbi_flag(sbi, SBI_NEED_FSCK);
3592 f2fs_warn(sbi, "%s: partial blocks were released i_ino=%lx "
c2759eba 3593 "iblocks=%llu, released=%u, compr_blocks=%u, "
ef8d563f
CY		 3594 "run fsck to fix.",
3595 __func__, inode->i_ino, inode->i_blocks,
3596 released_blocks,
c2759eba 3597 atomic_read(&F2FS_I(inode)->i_compr_blocks));
ef8d563f
CY		 3598 }
3599
3600 return ret;
3601}
3602
c75488fb
CY		 3603static int reserve_compress_blocks(struct dnode_of_data *dn, pgoff_t count)
3604{
3605 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
3606 unsigned int reserved_blocks = 0;
3607 int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
3608 block_t blkaddr;
3609 int i;
3610
3611 for (i = 0; i < count; i++) {
3612 blkaddr = data_blkaddr(dn->inode, dn->node_page,
3613 dn->ofs_in_node + i);
3614
3615 if (!__is_valid_data_blkaddr(blkaddr))
3616 continue;
3617 if (unlikely(!f2fs_is_valid_blkaddr(sbi, blkaddr,
3618 DATA_GENERIC_ENHANCE)))
3619 return -EFSCORRUPTED;
3620 }
3621
3622 while (count) {
3623 int compr_blocks = 0;
3624 blkcnt_t reserved;
3625 int ret;
3626
3627 for (i = 0; i < cluster_size; i++, dn->ofs_in_node++) {
3628 blkaddr = f2fs_data_blkaddr(dn);
3629
3630 if (i == 0) {
3631 if (blkaddr == COMPRESS_ADDR)
3632 continue;
3633 dn->ofs_in_node += cluster_size;
3634 goto next;
3635 }
3636
3637 if (__is_valid_data_blkaddr(blkaddr)) {
3638 compr_blocks++;
3639 continue;
3640 }
3641
3642 dn->data_blkaddr = NEW_ADDR;
3643 f2fs_set_data_blkaddr(dn);
3644 }
3645
3646 reserved = cluster_size - compr_blocks;
3647 ret = inc_valid_block_count(sbi, dn->inode, &reserved);
3648 if (ret)
3649 return ret;
3650
3651 if (reserved != cluster_size - compr_blocks)
3652 return -ENOSPC;
3653
3654 f2fs_i_compr_blocks_update(dn->inode, compr_blocks, true);
3655
3656 reserved_blocks += reserved;
3657next:
3658 count -= cluster_size;
3659 }
3660
3661 return reserved_blocks;
3662}
3663
3664static int f2fs_reserve_compress_blocks(struct file *filp, unsigned long arg)
3665{
3666 struct inode *inode = file_inode(filp);
3667 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3668 pgoff_t page_idx = 0, last_idx;
3669 unsigned int reserved_blocks = 0;
3670 int ret;
3671
3672 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3673 return -EOPNOTSUPP;
3674
3675 if (!f2fs_compressed_file(inode))
3676 return -EINVAL;
3677
3678 if (f2fs_readonly(sbi->sb))
3679 return -EROFS;
3680
3681 ret = mnt_want_write_file(filp);
3682 if (ret)
3683 return ret;
3684
c2759eba 3685 if (atomic_read(&F2FS_I(inode)->i_compr_blocks))
c75488fb
CY		 3686 goto out;
3687
3688 f2fs_balance_fs(F2FS_I_SB(inode), true);
3689
3690 inode_lock(inode);
3691
3692 if (!IS_IMMUTABLE(inode)) {
3693 ret = -EINVAL;
3694 goto unlock_inode;
3695 }
3696
3697 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3698 down_write(&F2FS_I(inode)->i_mmap_sem);
3699
3700 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
3701
3702 while (page_idx < last_idx) {
3703 struct dnode_of_data dn;
3704 pgoff_t end_offset, count;
3705
3706 set_new_dnode(&dn, inode, NULL, NULL, 0);
3707 ret = f2fs_get_dnode_of_data(&dn, page_idx, LOOKUP_NODE);
3708 if (ret) {
3709 if (ret == -ENOENT) {
3710 page_idx = f2fs_get_next_page_offset(&dn,
3711 page_idx);
3712 ret = 0;
3713 continue;
3714 }
3715 break;
3716 }
3717
3718 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3719 count = min(end_offset - dn.ofs_in_node, last_idx - page_idx);
4fec3fc0 3720 count = round_up(count, F2FS_I(inode)->i_cluster_size);
c75488fb
CY		 3721
3722 ret = reserve_compress_blocks(&dn, count);
3723
3724 f2fs_put_dnode(&dn);
3725
3726 if (ret < 0)
3727 break;
3728
3729 page_idx += count;
3730 reserved_blocks += ret;
3731 }
3732
3733 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3734 up_write(&F2FS_I(inode)->i_mmap_sem);
3735
3736 if (ret >= 0) {
3737 F2FS_I(inode)->i_flags &= ~F2FS_IMMUTABLE_FL;
3738 f2fs_set_inode_flags(inode);
3739 inode->i_ctime = current_time(inode);
3740 f2fs_mark_inode_dirty_sync(inode, true);
3741 }
3742unlock_inode:
3743 inode_unlock(inode);
3744out:
3745 mnt_drop_write_file(filp);
3746
3747 if (ret >= 0) {
3748 ret = put_user(reserved_blocks, (u64 __user *)arg);
c2759eba
DJ		 3749 } else if (reserved_blocks &&
3750 atomic_read(&F2FS_I(inode)->i_compr_blocks)) {
c75488fb
CY		 3751 set_sbi_flag(sbi, SBI_NEED_FSCK);
3752 f2fs_warn(sbi, "%s: partial blocks were released i_ino=%lx "
c2759eba 3753 "iblocks=%llu, reserved=%u, compr_blocks=%u, "
c75488fb
CY		 3754 "run fsck to fix.",
3755 __func__, inode->i_ino, inode->i_blocks,
3756 reserved_blocks,
c2759eba 3757 atomic_read(&F2FS_I(inode)->i_compr_blocks));
c75488fb
CY		 3758 }
3759
3760 return ret;
3761}
3762
9af84648
DJ		 3763static int f2fs_secure_erase(struct block_device *bdev, struct inode *inode,
3764 pgoff_t off, block_t block, block_t len, u32 flags)
3765{
3766 struct request_queue *q = bdev_get_queue(bdev);
3767 sector_t sector = SECTOR_FROM_BLOCK(block);
3768 sector_t nr_sects = SECTOR_FROM_BLOCK(len);
3769 int ret = 0;
3770
3771 if (!q)
3772 return -ENXIO;
3773
3774 if (flags & F2FS_TRIM_FILE_DISCARD)
3775 ret = blkdev_issue_discard(bdev, sector, nr_sects, GFP_NOFS,
3776 blk_queue_secure_erase(q) ?
3777 BLKDEV_DISCARD_SECURE : 0);
3778
3779 if (!ret && (flags & F2FS_TRIM_FILE_ZEROOUT)) {
3780 if (IS_ENCRYPTED(inode))
3781 ret = fscrypt_zeroout_range(inode, off, block, len);
3782 else
3783 ret = blkdev_issue_zeroout(bdev, sector, nr_sects,
3784 GFP_NOFS, 0);
3785 }
3786
3787 return ret;
3788}
3789
3790static int f2fs_sec_trim_file(struct file *filp, unsigned long arg)
3791{
3792 struct inode *inode = file_inode(filp);
3793 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3794 struct address_space *mapping = inode->i_mapping;
3795 struct block_device *prev_bdev = NULL;
3796 struct f2fs_sectrim_range range;
3797 pgoff_t index, pg_end, prev_index = 0;
3798 block_t prev_block = 0, len = 0;
3799 loff_t end_addr;
3800 bool to_end = false;
3801 int ret = 0;
3802
3803 if (!(filp->f_mode & FMODE_WRITE))
3804 return -EBADF;
3805
3806 if (copy_from_user(&range, (struct f2fs_sectrim_range __user *)arg,
3807 sizeof(range)))
3808 return -EFAULT;
3809
3810 if (range.flags == 0 || (range.flags & ~F2FS_TRIM_FILE_MASK) ||
3811 !S_ISREG(inode->i_mode))
3812 return -EINVAL;
3813
3814 if (((range.flags & F2FS_TRIM_FILE_DISCARD) &&
3815 !f2fs_hw_support_discard(sbi)) ||
3816 ((range.flags & F2FS_TRIM_FILE_ZEROOUT) &&
3817 IS_ENCRYPTED(inode) && f2fs_is_multi_device(sbi)))
3818 return -EOPNOTSUPP;
3819
3820 file_start_write(filp);
3821 inode_lock(inode);
3822
3823 if (f2fs_is_atomic_file(inode) || f2fs_compressed_file(inode) ||
3824 range.start >= inode->i_size) {
3825 ret = -EINVAL;
3826 goto err;
3827 }
3828
3829 if (range.len == 0)
3830 goto err;
3831
3832 if (inode->i_size - range.start > range.len) {
3833 end_addr = range.start + range.len;
3834 } else {
3835 end_addr = range.len == (u64)-1 ?
3836 sbi->sb->s_maxbytes : inode->i_size;
3837 to_end = true;
3838 }
3839
3840 if (!IS_ALIGNED(range.start, F2FS_BLKSIZE) ||
3841 (!to_end && !IS_ALIGNED(end_addr, F2FS_BLKSIZE))) {
3842 ret = -EINVAL;
3843 goto err;
3844 }
3845
3846 index = F2FS_BYTES_TO_BLK(range.start);
3847 pg_end = DIV_ROUND_UP(end_addr, F2FS_BLKSIZE);
3848
3849 ret = f2fs_convert_inline_inode(inode);
3850 if (ret)
3851 goto err;
3852
3853 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3854 down_write(&F2FS_I(inode)->i_mmap_sem);
3855
3856 ret = filemap_write_and_wait_range(mapping, range.start,
3857 to_end ? LLONG_MAX : end_addr - 1);
3858 if (ret)
3859 goto out;
3860
3861 truncate_inode_pages_range(mapping, range.start,
3862 to_end ? -1 : end_addr - 1);
3863
3864 while (index < pg_end) {
3865 struct dnode_of_data dn;
3866 pgoff_t end_offset, count;
3867 int i;
3868
3869 set_new_dnode(&dn, inode, NULL, NULL, 0);
3870 ret = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE);
3871 if (ret) {
3872 if (ret == -ENOENT) {
3873 index = f2fs_get_next_page_offset(&dn, index);
3874 continue;
3875 }
3876 goto out;
3877 }
3878
3879 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3880 count = min(end_offset - dn.ofs_in_node, pg_end - index);
3881 for (i = 0; i < count; i++, index++, dn.ofs_in_node++) {
3882 struct block_device *cur_bdev;
3883 block_t blkaddr = f2fs_data_blkaddr(&dn);
3884
3885 if (!__is_valid_data_blkaddr(blkaddr))
3886 continue;
3887
3888 if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
3889 DATA_GENERIC_ENHANCE)) {
3890 ret = -EFSCORRUPTED;
3891 f2fs_put_dnode(&dn);
3892 goto out;
3893 }
3894
3895 cur_bdev = f2fs_target_device(sbi, blkaddr, NULL);
3896 if (f2fs_is_multi_device(sbi)) {
3897 int di = f2fs_target_device_index(sbi, blkaddr);
3898
3899 blkaddr -= FDEV(di).start_blk;
3900 }
3901
3902 if (len) {
3903 if (prev_bdev == cur_bdev &&
3904 index == prev_index + len &&
3905 blkaddr == prev_block + len) {
3906 len++;
3907 } else {
3908 ret = f2fs_secure_erase(prev_bdev,
3909 inode, prev_index, prev_block,
3910 len, range.flags);
3911 if (ret) {
3912 f2fs_put_dnode(&dn);
3913 goto out;
3914 }
3915
3916 len = 0;
3917 }
3918 }
3919
3920 if (!len) {
3921 prev_bdev = cur_bdev;
3922 prev_index = index;
3923 prev_block = blkaddr;
3924 len = 1;
3925 }
3926 }
3927
3928 f2fs_put_dnode(&dn);
3929
3930 if (fatal_signal_pending(current)) {
3931 ret = -EINTR;
3932 goto out;
3933 }
3934 cond_resched();
3935 }
3936
3937 if (len)
3938 ret = f2fs_secure_erase(prev_bdev, inode, prev_index,
3939 prev_block, len, range.flags);
3940out:
3941 up_write(&F2FS_I(inode)->i_mmap_sem);
3942 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3943err:
3944 inode_unlock(inode);
3945 file_end_write(filp);
3946
3947 return ret;
3948}
3949
9e2a5f8c 3950static int f2fs_ioc_get_compress_option(struct file *filp, unsigned long arg)
52656e6c 3951{
9e2a5f8c
DJ		 3952 struct inode *inode = file_inode(filp);
3953 struct f2fs_comp_option option;
3954
3955 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3956 return -EOPNOTSUPP;
3957
3958 inode_lock_shared(inode);
3959
3960 if (!f2fs_compressed_file(inode)) {
3961 inode_unlock_shared(inode);
3962 return -ENODATA;
3963 }
3964
3965 option.algorithm = F2FS_I(inode)->i_compress_algorithm;
3966 option.log_cluster_size = F2FS_I(inode)->i_log_cluster_size;
3967
3968 inode_unlock_shared(inode);
3969
3970 if (copy_to_user((struct f2fs_comp_option __user *)arg, &option,
3971 sizeof(option)))
3972 return -EFAULT;
3973
3974 return 0;
3975}
3976
e1e8debe
DJ		 3977static int f2fs_ioc_set_compress_option(struct file *filp, unsigned long arg)
3978{
3979 struct inode *inode = file_inode(filp);
3980 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3981 struct f2fs_comp_option option;
3982 int ret = 0;
1f227a3e 3983
e1e8debe
DJ		 3984 if (!f2fs_sb_has_compression(sbi))
3985 return -EOPNOTSUPP;
3986
3987 if (!(filp->f_mode & FMODE_WRITE))
3988 return -EBADF;
3989
3990 if (copy_from_user(&option, (struct f2fs_comp_option __user *)arg,
3991 sizeof(option)))
3992 return -EFAULT;
3993
3994 if (!f2fs_compressed_file(inode) ||
3995 option.log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
3996 option.log_cluster_size > MAX_COMPRESS_LOG_SIZE ||
3997 option.algorithm >= COMPRESS_MAX)
3998 return -EINVAL;
3999
4000 file_start_write(filp);
4001 inode_lock(inode);
4002
4003 if (f2fs_is_mmap_file(inode) || get_dirty_pages(inode)) {
4004 ret = -EBUSY;
4005 goto out;
4006 }
4007
4008 if (inode->i_size != 0) {
4009 ret = -EFBIG;
4010 goto out;
4011 }
4012
4013 F2FS_I(inode)->i_compress_algorithm = option.algorithm;
4014 F2FS_I(inode)->i_log_cluster_size = option.log_cluster_size;
4015 F2FS_I(inode)->i_cluster_size = 1 << option.log_cluster_size;
4016 f2fs_mark_inode_dirty_sync(inode, true);
4017
4018 if (!f2fs_is_compress_backend_ready(inode))
4019 f2fs_warn(sbi, "compression algorithm is successfully set, "
4020 "but current kernel doesn't support this algorithm.");
4021out:
4022 inode_unlock(inode);
4023 file_end_write(filp);
4024
4025 return ret;
4026}
4027
5fdb322f
DJ		 4028static int redirty_blocks(struct inode *inode, pgoff_t page_idx, int len)
4029{
4030 DEFINE_READAHEAD(ractl, NULL, inode->i_mapping, page_idx);
4031 struct address_space *mapping = inode->i_mapping;
4032 struct page *page;
4033 pgoff_t redirty_idx = page_idx;
4034 int i, page_len = 0, ret = 0;
4035
4036 page_cache_ra_unbounded(&ractl, len, 0);
4037
4038 for (i = 0; i < len; i++, page_idx++) {
4039 page = read_cache_page(mapping, page_idx, NULL, NULL);
4040 if (IS_ERR(page)) {
4041 ret = PTR_ERR(page);
4042 break;
4043 }
4044 page_len++;
4045 }
4046
4047 for (i = 0; i < page_len; i++, redirty_idx++) {
4048 page = find_lock_page(mapping, redirty_idx);
4049 if (!page)
4050 ret = -ENOENT;
4051 set_page_dirty(page);
4052 f2fs_put_page(page, 1);
4053 f2fs_put_page(page, 0);
4054 }
4055
4056 return ret;
4057}
4058
4059static int f2fs_ioc_decompress_file(struct file *filp, unsigned long arg)
4060{
4061 struct inode *inode = file_inode(filp);
4062 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4063 struct f2fs_inode_info *fi = F2FS_I(inode);
4064 pgoff_t page_idx = 0, last_idx;
4065 unsigned int blk_per_seg = sbi->blocks_per_seg;
4066 int cluster_size = F2FS_I(inode)->i_cluster_size;
4067 int count, ret;
4068
4069 if (!f2fs_sb_has_compression(sbi) ||
4070 F2FS_OPTION(sbi).compress_mode != COMPR_MODE_USER)
4071 return -EOPNOTSUPP;
4072
4073 if (!(filp->f_mode & FMODE_WRITE))
4074 return -EBADF;
4075
4076 if (!f2fs_compressed_file(inode))
4077 return -EINVAL;
4078
4079 f2fs_balance_fs(F2FS_I_SB(inode), true);
4080
4081 file_start_write(filp);
4082 inode_lock(inode);
4083
4084 if (!f2fs_is_compress_backend_ready(inode)) {
4085 ret = -EOPNOTSUPP;
4086 goto out;
4087 }
4088
4089 if (f2fs_is_mmap_file(inode)) {
4090 ret = -EBUSY;
4091 goto out;
4092 }
4093
4094 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
4095 if (ret)
4096 goto out;
4097
4098 if (!atomic_read(&fi->i_compr_blocks))
4099 goto out;
4100
4101 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
4102
4103 count = last_idx - page_idx;
4104 while (count) {
4105 int len = min(cluster_size, count);
4106
4107 ret = redirty_blocks(inode, page_idx, len);
4108 if (ret < 0)
4109 break;
4110
4111 if (get_dirty_pages(inode) >= blk_per_seg)
4112 filemap_fdatawrite(inode->i_mapping);
4113
4114 count -= len;
4115 page_idx += len;
4116 }
4117
4118 if (!ret)
4119 ret = filemap_write_and_wait_range(inode->i_mapping, 0,
4120 LLONG_MAX);
4121
4122 if (ret)
4123 f2fs_warn(sbi, "%s: The file might be partially decompressed "
4124 "(errno=%d). Please delete the file.\n",
4125 __func__, ret);
4126out:
4127 inode_unlock(inode);
4128 file_end_write(filp);
4129
4130 return ret;
4131}
4132
4133static int f2fs_ioc_compress_file(struct file *filp, unsigned long arg)
4134{
4135 struct inode *inode = file_inode(filp);
4136 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4137 pgoff_t page_idx = 0, last_idx;
4138 unsigned int blk_per_seg = sbi->blocks_per_seg;
4139 int cluster_size = F2FS_I(inode)->i_cluster_size;
4140 int count, ret;
4141
4142 if (!f2fs_sb_has_compression(sbi) ||
4143 F2FS_OPTION(sbi).compress_mode != COMPR_MODE_USER)
4144 return -EOPNOTSUPP;
4145
4146 if (!(filp->f_mode & FMODE_WRITE))
4147 return -EBADF;
4148
4149 if (!f2fs_compressed_file(inode))
4150 return -EINVAL;
4151
4152 f2fs_balance_fs(F2FS_I_SB(inode), true);
4153
4154 file_start_write(filp);
4155 inode_lock(inode);
4156
4157 if (!f2fs_is_compress_backend_ready(inode)) {
4158 ret = -EOPNOTSUPP;
4159 goto out;
4160 }
4161
4162 if (f2fs_is_mmap_file(inode)) {
4163 ret = -EBUSY;
4164 goto out;
4165 }
4166
4167 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
4168 if (ret)
4169 goto out;
4170
4171 set_inode_flag(inode, FI_ENABLE_COMPRESS);
4172
4173 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
4174
4175 count = last_idx - page_idx;
4176 while (count) {
4177 int len = min(cluster_size, count);
4178
4179 ret = redirty_blocks(inode, page_idx, len);
4180 if (ret < 0)
4181 break;
4182
4183 if (get_dirty_pages(inode) >= blk_per_seg)
4184 filemap_fdatawrite(inode->i_mapping);
4185
4186 count -= len;
4187 page_idx += len;
4188 }
4189
4190 if (!ret)
4191 ret = filemap_write_and_wait_range(inode->i_mapping, 0,
4192 LLONG_MAX);
4193
4194 clear_inode_flag(inode, FI_ENABLE_COMPRESS);
4195
4196 if (ret)
4197 f2fs_warn(sbi, "%s: The file might be partially compressed "
4198 "(errno=%d). Please delete the file.\n",
4199 __func__, ret);
4200out:
4201 inode_unlock(inode);
4202 file_end_write(filp);
4203
4204 return ret;
4205}
4206
34178b1b 4207static long __f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
52656e6c
JK		 4208{
4209 switch (cmd) {
3357af8f 4210 case FS_IOC_GETFLAGS:
52656e6c 4211 return f2fs_ioc_getflags(filp, arg);
3357af8f 4212 case FS_IOC_SETFLAGS:
52656e6c 4213 return f2fs_ioc_setflags(filp, arg);
3357af8f 4214 case FS_IOC_GETVERSION:
d49f3e89 4215 return f2fs_ioc_getversion(filp, arg);
88b88a66
JK		 4216 case F2FS_IOC_START_ATOMIC_WRITE:
4217 return f2fs_ioc_start_atomic_write(filp);
4218 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
4219 return f2fs_ioc_commit_atomic_write(filp);
02a1335f
JK		 4220 case F2FS_IOC_START_VOLATILE_WRITE:
4221 return f2fs_ioc_start_volatile_write(filp);
1e84371f
JK		 4222 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
4223 return f2fs_ioc_release_volatile_write(filp);
4224 case F2FS_IOC_ABORT_VOLATILE_WRITE:
4225 return f2fs_ioc_abort_volatile_write(filp);
1abff93d
JK		 4226 case F2FS_IOC_SHUTDOWN:
4227 return f2fs_ioc_shutdown(filp, arg);
52656e6c
JK		 4228 case FITRIM:
4229 return f2fs_ioc_fitrim(filp, arg);
3357af8f 4230 case FS_IOC_SET_ENCRYPTION_POLICY:
f424f664 4231 return f2fs_ioc_set_encryption_policy(filp, arg);
3357af8f 4232 case FS_IOC_GET_ENCRYPTION_POLICY:
f424f664 4233 return f2fs_ioc_get_encryption_policy(filp, arg);
3357af8f 4234 case FS_IOC_GET_ENCRYPTION_PWSALT:
f424f664 4235 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
8ce589c7
EB		 4236 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
4237 return f2fs_ioc_get_encryption_policy_ex(filp, arg);
4238 case FS_IOC_ADD_ENCRYPTION_KEY:
4239 return f2fs_ioc_add_encryption_key(filp, arg);
4240 case FS_IOC_REMOVE_ENCRYPTION_KEY:
4241 return f2fs_ioc_remove_encryption_key(filp, arg);
4242 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
4243 return f2fs_ioc_remove_encryption_key_all_users(filp, arg);
4244 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
4245 return f2fs_ioc_get_encryption_key_status(filp, arg);
ee446e1a
EB		 4246 case FS_IOC_GET_ENCRYPTION_NONCE:
4247 return f2fs_ioc_get_encryption_nonce(filp, arg);
c1c1b583
CY		 4248 case F2FS_IOC_GARBAGE_COLLECT:
4249 return f2fs_ioc_gc(filp, arg);
34dc77ad
JK		 4250 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
4251 return f2fs_ioc_gc_range(filp, arg);
456b88e4 4252 case F2FS_IOC_WRITE_CHECKPOINT:
059c0648 4253 return f2fs_ioc_write_checkpoint(filp, arg);
d323d005
CY		 4254 case F2FS_IOC_DEFRAGMENT:
4255 return f2fs_ioc_defragment(filp, arg);
4dd6f977
JK		 4256 case F2FS_IOC_MOVE_RANGE:
4257 return f2fs_ioc_move_range(filp, arg);
e066b83c
JK		 4258 case F2FS_IOC_FLUSH_DEVICE:
4259 return f2fs_ioc_flush_device(filp, arg);
e65ef207
JK		 4260 case F2FS_IOC_GET_FEATURES:
4261 return f2fs_ioc_get_features(filp, arg);
3357af8f 4262 case FS_IOC_FSGETXATTR:
2c1d0305 4263 return f2fs_ioc_fsgetxattr(filp, arg);
3357af8f 4264 case FS_IOC_FSSETXATTR:
2c1d0305 4265 return f2fs_ioc_fssetxattr(filp, arg);
1ad71a27
JK		 4266 case F2FS_IOC_GET_PIN_FILE:
4267 return f2fs_ioc_get_pin_file(filp, arg);
4268 case F2FS_IOC_SET_PIN_FILE:
4269 return f2fs_ioc_set_pin_file(filp, arg);
c4020b2d
CY		 4270 case F2FS_IOC_PRECACHE_EXTENTS:
4271 return f2fs_ioc_precache_extents(filp, arg);
04f0b2ea
QS		 4272 case F2FS_IOC_RESIZE_FS:
4273 return f2fs_ioc_resize_fs(filp, arg);
95ae251f
EB		 4274 case FS_IOC_ENABLE_VERITY:
4275 return f2fs_ioc_enable_verity(filp, arg);
4276 case FS_IOC_MEASURE_VERITY:
4277 return f2fs_ioc_measure_verity(filp, arg);
3357af8f
EB		 4278 case FS_IOC_GETFSLABEL:
4279 return f2fs_ioc_getfslabel(filp, arg);
4280 case FS_IOC_SETFSLABEL:
4281 return f2fs_ioc_setfslabel(filp, arg);
439dfb10
CY		 4282 case F2FS_IOC_GET_COMPRESS_BLOCKS:
4283 return f2fs_get_compress_blocks(filp, arg);
ef8d563f
CY		 4284 case F2FS_IOC_RELEASE_COMPRESS_BLOCKS:
4285 return f2fs_release_compress_blocks(filp, arg);
c75488fb
CY		 4286 case F2FS_IOC_RESERVE_COMPRESS_BLOCKS:
4287 return f2fs_reserve_compress_blocks(filp, arg);
9af84648
DJ		 4288 case F2FS_IOC_SEC_TRIM_FILE:
4289 return f2fs_sec_trim_file(filp, arg);
9e2a5f8c
DJ		 4290 case F2FS_IOC_GET_COMPRESS_OPTION:
4291 return f2fs_ioc_get_compress_option(filp, arg);
e1e8debe
DJ		 4292 case F2FS_IOC_SET_COMPRESS_OPTION:
4293 return f2fs_ioc_set_compress_option(filp, arg);
5fdb322f
DJ		 4294 case F2FS_IOC_DECOMPRESS_FILE:
4295 return f2fs_ioc_decompress_file(filp, arg);
4296 case F2FS_IOC_COMPRESS_FILE:
4297 return f2fs_ioc_compress_file(filp, arg);
fbfa2cc5
JK		 4298 default:
4299 return -ENOTTY;
4300 }
4301}
4302
34178b1b
CY		 4303long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
4304{
4305 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
4306 return -EIO;
4307 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(filp))))
4308 return -ENOSPC;
4309
4310 return __f2fs_ioctl(filp, cmd, arg);
4311}
4312
4c8ff709
CY		 4313static ssize_t f2fs_file_read_iter(struct kiocb *iocb, struct iov_iter *iter)
4314{
4315 struct file *file = iocb->ki_filp;
4316 struct inode *inode = file_inode(file);
8b83ac81 4317 int ret;
4c8ff709
CY		 4318
4319 if (!f2fs_is_compress_backend_ready(inode))
4320 return -EOPNOTSUPP;
4321
8b83ac81
CY		 4322 ret = generic_file_read_iter(iocb, iter);
4323
4324 if (ret > 0)
4325 f2fs_update_iostat(F2FS_I_SB(inode), APP_READ_IO, ret);
4326
4327 return ret;
4c8ff709
CY		 4328}
4329
fcc85a4d
JK		 4330static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
4331{
b439b103
JK		 4332 struct file *file = iocb->ki_filp;
4333 struct inode *inode = file_inode(file);
4334 ssize_t ret;
fcc85a4d 4335
126ce721
CY		 4336 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) {
4337 ret = -EIO;
4338 goto out;
4339 }
1f227a3e 4340
7bd29358
CY		 4341 if (!f2fs_is_compress_backend_ready(inode)) {
4342 ret = -EOPNOTSUPP;
4343 goto out;
4344 }
4c8ff709 4345
cb8434f1
GR		 4346 if (iocb->ki_flags & IOCB_NOWAIT) {
4347 if (!inode_trylock(inode)) {
126ce721
CY		 4348 ret = -EAGAIN;
4349 goto out;
4350 }
cb8434f1 4351 } else {
b91050a8
HL		 4352 inode_lock(inode);
4353 }
4354
b439b103
JK		 4355 ret = generic_write_checks(iocb, from);
4356 if (ret > 0) {
dc7a10dd
JK		 4357 bool preallocated = false;
4358 size_t target_size = 0;
dc91de78 4359 int err;
a7de6086 4360
dc91de78
JK		 4361 if (iov_iter_fault_in_readable(from, iov_iter_count(from)))
4362 set_inode_flag(inode, FI_NO_PREALLOC);
a7de6086 4363
d5d5f0c0
CX		 4364 if ((iocb->ki_flags & IOCB_NOWAIT)) {
4365 if (!f2fs_overwrite_io(inode, iocb->ki_pos,
b91050a8 4366 iov_iter_count(from)) ||
d5d5f0c0
CX		 4367 f2fs_has_inline_data(inode) ||
4368 f2fs_force_buffered_io(inode, iocb, from)) {
4369 clear_inode_flag(inode, FI_NO_PREALLOC);
4370 inode_unlock(inode);
4371 ret = -EAGAIN;
4372 goto out;
4373 }
47501f87
JK		 4374 goto write;
4375 }
dc7a10dd 4376
47501f87
JK		 4377 if (is_inode_flag_set(inode, FI_NO_PREALLOC))
4378 goto write;
4379
4380 if (iocb->ki_flags & IOCB_DIRECT) {
4381 /*
4382 * Convert inline data for Direct I/O before entering
4383 * f2fs_direct_IO().
4384 */
4385 err = f2fs_convert_inline_inode(inode);
4386 if (err)
4387 goto out_err;
4388 /*
4389 * If force_buffere_io() is true, we have to allocate
4390 * blocks all the time, since f2fs_direct_IO will fall
4391 * back to buffered IO.
4392 */
4393 if (!f2fs_force_buffered_io(inode, iocb, from) &&
4394 allow_outplace_dio(inode, iocb, from))
4395 goto write;
4396 }
4397 preallocated = true;
4398 target_size = iocb->ki_pos + iov_iter_count(from);
4399
4400 err = f2fs_preallocate_blocks(iocb, from);
4401 if (err) {
4402out_err:
4403 clear_inode_flag(inode, FI_NO_PREALLOC);
4404 inode_unlock(inode);
4405 ret = err;
4406 goto out;
9dfa1baf 4407 }
47501f87 4408write:
a7de6086 4409 ret = __generic_file_write_iter(iocb, from);
dc91de78 4410 clear_inode_flag(inode, FI_NO_PREALLOC);
b0af6d49 4411
dc7a10dd
JK		 4412 /* if we couldn't write data, we should deallocate blocks. */
4413 if (preallocated && i_size_read(inode) < target_size)
4414 f2fs_truncate(inode);
4415
b0af6d49
CY		 4416 if (ret > 0)
4417 f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret);
b439b103
JK		 4418 }
4419 inode_unlock(inode);
126ce721
CY		 4420out:
4421 trace_f2fs_file_write_iter(inode, iocb->ki_pos,
4422 iov_iter_count(from), ret);
e2592217
CH		 4423 if (ret > 0)
4424 ret = generic_write_sync(iocb, ret);
b439b103 4425 return ret;
fcc85a4d
JK		 4426}
4427
e9750824 4428#ifdef CONFIG_COMPAT
34178b1b
CY		 4429struct compat_f2fs_gc_range {
4430 u32 sync;
4431 compat_u64 start;
4432 compat_u64 len;
4433};
4434#define F2FS_IOC32_GARBAGE_COLLECT_RANGE _IOW(F2FS_IOCTL_MAGIC, 11,\
4435 struct compat_f2fs_gc_range)
4436
4437static int f2fs_compat_ioc_gc_range(struct file *file, unsigned long arg)
4438{
4439 struct compat_f2fs_gc_range __user *urange;
4440 struct f2fs_gc_range range;
4441 int err;
4442
4443 urange = compat_ptr(arg);
4444 err = get_user(range.sync, &urange->sync);
4445 err |= get_user(range.start, &urange->start);
4446 err |= get_user(range.len, &urange->len);
4447 if (err)
4448 return -EFAULT;
4449
4450 return __f2fs_ioc_gc_range(file, &range);
4451}
4452
4453struct compat_f2fs_move_range {
4454 u32 dst_fd;
4455 compat_u64 pos_in;
4456 compat_u64 pos_out;
4457 compat_u64 len;
4458};
4459#define F2FS_IOC32_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \
4460 struct compat_f2fs_move_range)
4461
4462static int f2fs_compat_ioc_move_range(struct file *file, unsigned long arg)
4463{
4464 struct compat_f2fs_move_range __user *urange;
4465 struct f2fs_move_range range;
4466 int err;
4467
4468 urange = compat_ptr(arg);
4469 err = get_user(range.dst_fd, &urange->dst_fd);
4470 err |= get_user(range.pos_in, &urange->pos_in);
4471 err |= get_user(range.pos_out, &urange->pos_out);
4472 err |= get_user(range.len, &urange->len);
4473 if (err)
4474 return -EFAULT;
4475
4476 return __f2fs_ioc_move_range(file, &range);
4477}
4478
e9750824
NJ		 4479long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
4480{
34178b1b
CY		 4481 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
4482 return -EIO;
4483 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(file))))
4484 return -ENOSPC;
4485
e9750824 4486 switch (cmd) {
3357af8f
EB		 4487 case FS_IOC32_GETFLAGS:
4488 cmd = FS_IOC_GETFLAGS;
e9750824 4489 break;
3357af8f
EB		 4490 case FS_IOC32_SETFLAGS:
4491 cmd = FS_IOC_SETFLAGS;
e9750824 4492 break;
3357af8f
EB		 4493 case FS_IOC32_GETVERSION:
4494 cmd = FS_IOC_GETVERSION;
04ef4b62 4495 break;
34178b1b
CY		 4496 case F2FS_IOC32_GARBAGE_COLLECT_RANGE:
4497 return f2fs_compat_ioc_gc_range(file, arg);
4498 case F2FS_IOC32_MOVE_RANGE:
4499 return f2fs_compat_ioc_move_range(file, arg);
04ef4b62
CY		 4500 case F2FS_IOC_START_ATOMIC_WRITE:
4501 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
4502 case F2FS_IOC_START_VOLATILE_WRITE:
4503 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
4504 case F2FS_IOC_ABORT_VOLATILE_WRITE:
4505 case F2FS_IOC_SHUTDOWN:
314999dc 4506 case FITRIM:
3357af8f
EB		 4507 case FS_IOC_SET_ENCRYPTION_POLICY:
4508 case FS_IOC_GET_ENCRYPTION_PWSALT:
4509 case FS_IOC_GET_ENCRYPTION_POLICY:
8ce589c7
EB		 4510 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
4511 case FS_IOC_ADD_ENCRYPTION_KEY:
4512 case FS_IOC_REMOVE_ENCRYPTION_KEY:
4513 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
4514 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
ee446e1a 4515 case FS_IOC_GET_ENCRYPTION_NONCE:
04ef4b62
CY		 4516 case F2FS_IOC_GARBAGE_COLLECT:
4517 case F2FS_IOC_WRITE_CHECKPOINT:
4518 case F2FS_IOC_DEFRAGMENT:
e066b83c 4519 case F2FS_IOC_FLUSH_DEVICE:
e65ef207 4520 case F2FS_IOC_GET_FEATURES:
3357af8f
EB		 4521 case FS_IOC_FSGETXATTR:
4522 case FS_IOC_FSSETXATTR:
1ad71a27
JK		 4523 case F2FS_IOC_GET_PIN_FILE:
4524 case F2FS_IOC_SET_PIN_FILE:
c4020b2d 4525 case F2FS_IOC_PRECACHE_EXTENTS:
04f0b2ea 4526 case F2FS_IOC_RESIZE_FS:
95ae251f
EB		 4527 case FS_IOC_ENABLE_VERITY:
4528 case FS_IOC_MEASURE_VERITY:
3357af8f
EB		 4529 case FS_IOC_GETFSLABEL:
4530 case FS_IOC_SETFSLABEL:
439dfb10 4531 case F2FS_IOC_GET_COMPRESS_BLOCKS:
ef8d563f 4532 case F2FS_IOC_RELEASE_COMPRESS_BLOCKS:
c75488fb 4533 case F2FS_IOC_RESERVE_COMPRESS_BLOCKS:
9af84648 4534 case F2FS_IOC_SEC_TRIM_FILE:
9e2a5f8c 4535 case F2FS_IOC_GET_COMPRESS_OPTION:
e1e8debe 4536 case F2FS_IOC_SET_COMPRESS_OPTION:
5fdb322f
DJ		 4537 case F2FS_IOC_DECOMPRESS_FILE:
4538 case F2FS_IOC_COMPRESS_FILE:
4dd6f977 4539 break;
e9750824
NJ		 4540 default:
4541 return -ENOIOCTLCMD;
4542 }
34178b1b 4543 return __f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
e9750824
NJ		 4544}
4545#endif
4546
fbfa2cc5 4547const struct file_operations f2fs_file_operations = {
267378d4 4548 .llseek = f2fs_llseek,
4c8ff709 4549 .read_iter = f2fs_file_read_iter,
fcc85a4d
JK		 4550 .write_iter = f2fs_file_write_iter,
4551 .open = f2fs_file_open,
12662234 4552 .release = f2fs_release_file,
fbfa2cc5 4553 .mmap = f2fs_file_mmap,
7a10f017 4554 .flush = f2fs_file_flush,
fbfa2cc5
JK		 4555 .fsync = f2fs_sync_file,
4556 .fallocate = f2fs_fallocate,
4557 .unlocked_ioctl = f2fs_ioctl,
e9750824
NJ		 4558#ifdef CONFIG_COMPAT
4559 .compat_ioctl = f2fs_compat_ioctl,
4560#endif
fbfa2cc5 4561 .splice_read = generic_file_splice_read,
8d020765 4562 .splice_write = iter_file_splice_write,
fbfa2cc5 4563};
Linux 6.x block layer and io_uring tree(s)