1// SPDX-License-Identifier: GPL-2.0 2/* 3 * fs/f2fs/file.c 4 * 5 * Copyright (c) 2012 Samsung Electronics Co., Ltd. 6 * http://www.samsung.com/ 7 */ 8#include <linux/fs.h> 9#include <linux/f2fs_fs.h> 10#include <linux/stat.h> 11#include <linux/buffer_head.h> 12#include <linux/writeback.h> 13#include <linux/blkdev.h> 14#include <linux/falloc.h> 15#include <linux/types.h> 16#include <linux/compat.h> 17#include <linux/uaccess.h> 18#include <linux/mount.h> 19#include <linux/pagevec.h> 20#include <linux/uio.h> 21#include <linux/uuid.h> 22#include <linux/file.h> 23#include <linux/nls.h> 24#include <linux/sched/signal.h> 25 26#include "f2fs.h" 27#include "node.h" 28#include "segment.h" 29#include "xattr.h" 30#include "acl.h" 31#include "gc.h" 32#include "trace.h" 33#include <trace/events/f2fs.h> 34#include <uapi/linux/f2fs.h> 35 36static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf) 37{ 38 struct inode *inode = file_inode(vmf->vma->vm_file); 39 vm_fault_t ret; 40 41 down_read(&F2FS_I(inode)->i_mmap_sem); 42 ret = filemap_fault(vmf); 43 up_read(&F2FS_I(inode)->i_mmap_sem); 44 45 if (ret & VM_FAULT_LOCKED) 46 f2fs_update_iostat(F2FS_I_SB(inode), APP_MAPPED_READ_IO, 47 F2FS_BLKSIZE); 48 49 trace_f2fs_filemap_fault(inode, vmf->pgoff, (unsigned long)ret); 50 51 return ret; 52} 53 54static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf) 55{ 56 struct page *page = vmf->page; 57 struct inode *inode = file_inode(vmf->vma->vm_file); 58 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 59 struct dnode_of_data dn; 60 bool need_alloc = true; 61 int err = 0; 62 63 if (unlikely(IS_IMMUTABLE(inode))) 64 return VM_FAULT_SIGBUS; 65 66 if (unlikely(f2fs_cp_error(sbi))) { 67 err = -EIO; 68 goto err; 69 } 70 71 if (!f2fs_is_checkpoint_ready(sbi)) { 72 err = -ENOSPC; 73 goto err; 74 } 75 76#ifdef CONFIG_F2FS_FS_COMPRESSION 77 if (f2fs_compressed_file(inode)) { 78 int ret = f2fs_is_compressed_cluster(inode, page->index); 79 80 if (ret < 0) { 81 err = ret; 82 goto err; 83 } else if (ret) { 84 if (ret < F2FS_I(inode)->i_cluster_size) { 85 err = -EAGAIN; 86 goto err; 87 } 88 need_alloc = false; 89 } 90 } 91#endif 92 /* should do out of any locked page */ 93 if (need_alloc) 94 f2fs_balance_fs(sbi, true); 95 96 sb_start_pagefault(inode->i_sb); 97 98 f2fs_bug_on(sbi, f2fs_has_inline_data(inode)); 99 100 file_update_time(vmf->vma->vm_file); 101 down_read(&F2FS_I(inode)->i_mmap_sem); 102 lock_page(page); 103 if (unlikely(page->mapping != inode->i_mapping || 104 page_offset(page) > i_size_read(inode) || 105 !PageUptodate(page))) { 106 unlock_page(page); 107 err = -EFAULT; 108 goto out_sem; 109 } 110 111 if (need_alloc) { 112 /* block allocation */ 113 f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true); 114 set_new_dnode(&dn, inode, NULL, NULL, 0); 115 err = f2fs_get_block(&dn, page->index); 116 f2fs_put_dnode(&dn); 117 f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false); 118 } 119 120#ifdef CONFIG_F2FS_FS_COMPRESSION 121 if (!need_alloc) { 122 set_new_dnode(&dn, inode, NULL, NULL, 0); 123 err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE); 124 f2fs_put_dnode(&dn); 125 } 126#endif 127 if (err) { 128 unlock_page(page); 129 goto out_sem; 130 } 131 132 f2fs_wait_on_page_writeback(page, DATA, false, true); 133 134 /* wait for GCed page writeback via META_MAPPING */ 135 f2fs_wait_on_block_writeback(inode, dn.data_blkaddr); 136 137 /* 138 * check to see if the page is mapped already (no holes) 139 */ 140 if (PageMappedToDisk(page)) 141 goto out_sem; 142 143 /* page is wholly or partially inside EOF */ 144 if (((loff_t)(page->index + 1) << PAGE_SHIFT) > 145 i_size_read(inode)) { 146 loff_t offset; 147 148 offset = i_size_read(inode) & ~PAGE_MASK; 149 zero_user_segment(page, offset, PAGE_SIZE); 150 } 151 set_page_dirty(page); 152 if (!PageUptodate(page)) 153 SetPageUptodate(page); 154 155 f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE); 156 f2fs_update_time(sbi, REQ_TIME); 157 158 trace_f2fs_vm_page_mkwrite(page, DATA); 159out_sem: 160 up_read(&F2FS_I(inode)->i_mmap_sem); 161 162 sb_end_pagefault(inode->i_sb); 163err: 164 return block_page_mkwrite_return(err); 165} 166 167static const struct vm_operations_struct f2fs_file_vm_ops = { 168 .fault = f2fs_filemap_fault, 169 .map_pages = filemap_map_pages, 170 .page_mkwrite = f2fs_vm_page_mkwrite, 171}; 172 173static int get_parent_ino(struct inode *inode, nid_t *pino) 174{ 175 struct dentry *dentry; 176 177 /* 178 * Make sure to get the non-deleted alias. The alias associated with 179 * the open file descriptor being fsync()'ed may be deleted already. 180 */ 181 dentry = d_find_alias(inode); 182 if (!dentry) 183 return 0; 184 185 *pino = parent_ino(dentry); 186 dput(dentry); 187 return 1; 188} 189 190static inline enum cp_reason_type need_do_checkpoint(struct inode *inode) 191{ 192 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 193 enum cp_reason_type cp_reason = CP_NO_NEEDED; 194 195 if (!S_ISREG(inode->i_mode)) 196 cp_reason = CP_NON_REGULAR; 197 else if (f2fs_compressed_file(inode)) 198 cp_reason = CP_COMPRESSED; 199 else if (inode->i_nlink != 1) 200 cp_reason = CP_HARDLINK; 201 else if (is_sbi_flag_set(sbi, SBI_NEED_CP)) 202 cp_reason = CP_SB_NEED_CP; 203 else if (file_wrong_pino(inode)) 204 cp_reason = CP_WRONG_PINO; 205 else if (!f2fs_space_for_roll_forward(sbi)) 206 cp_reason = CP_NO_SPC_ROLL; 207 else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) 208 cp_reason = CP_NODE_NEED_CP; 209 else if (test_opt(sbi, FASTBOOT)) 210 cp_reason = CP_FASTBOOT_MODE; 211 else if (F2FS_OPTION(sbi).active_logs == 2) 212 cp_reason = CP_SPEC_LOG_NUM; 213 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT && 214 f2fs_need_dentry_mark(sbi, inode->i_ino) && 215 f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino, 216 TRANS_DIR_INO)) 217 cp_reason = CP_RECOVER_DIR; 218 219 return cp_reason; 220} 221 222static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) 223{ 224 struct page *i = find_get_page(NODE_MAPPING(sbi), ino); 225 bool ret = false; 226 /* But we need to avoid that there are some inode updates */ 227 if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino)) 228 ret = true; 229 f2fs_put_page(i, 0); 230 return ret; 231} 232 233static void try_to_fix_pino(struct inode *inode) 234{ 235 struct f2fs_inode_info *fi = F2FS_I(inode); 236 nid_t pino; 237 238 down_write(&fi->i_sem); 239 if (file_wrong_pino(inode) && inode->i_nlink == 1 && 240 get_parent_ino(inode, &pino)) { 241 f2fs_i_pino_write(inode, pino); 242 file_got_pino(inode); 243 } 244 up_write(&fi->i_sem); 245} 246 247static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, 248 int datasync, bool atomic) 249{ 250 struct inode *inode = file->f_mapping->host; 251 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 252 nid_t ino = inode->i_ino; 253 int ret = 0; 254 enum cp_reason_type cp_reason = 0; 255 struct writeback_control wbc = { 256 .sync_mode = WB_SYNC_ALL, 257 .nr_to_write = LONG_MAX, 258 .for_reclaim = 0, 259 }; 260 unsigned int seq_id = 0; 261 262 if (unlikely(f2fs_readonly(inode->i_sb))) 263 return 0; 264 265 trace_f2fs_sync_file_enter(inode); 266 267 if (S_ISDIR(inode->i_mode)) 268 goto go_write; 269 270 /* if fdatasync is triggered, let's do in-place-update */ 271 if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) 272 set_inode_flag(inode, FI_NEED_IPU); 273 ret = file_write_and_wait_range(file, start, end); 274 clear_inode_flag(inode, FI_NEED_IPU); 275 276 if (ret || is_sbi_flag_set(sbi, SBI_CP_DISABLED)) { 277 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret); 278 return ret; 279 } 280 281 /* if the inode is dirty, let's recover all the time */ 282 if (!f2fs_skip_inode_update(inode, datasync)) { 283 f2fs_write_inode(inode, NULL); 284 goto go_write; 285 } 286 287 /* 288 * if there is no written data, don't waste time to write recovery info. 289 */ 290 if (!is_inode_flag_set(inode, FI_APPEND_WRITE) && 291 !f2fs_exist_written_data(sbi, ino, APPEND_INO)) { 292 293 /* it may call write_inode just prior to fsync */ 294 if (need_inode_page_update(sbi, ino)) 295 goto go_write; 296 297 if (is_inode_flag_set(inode, FI_UPDATE_WRITE) || 298 f2fs_exist_written_data(sbi, ino, UPDATE_INO)) 299 goto flush_out; 300 goto out; 301 } 302go_write: 303 /* 304 * Both of fdatasync() and fsync() are able to be recovered from 305 * sudden-power-off. 306 */ 307 down_read(&F2FS_I(inode)->i_sem); 308 cp_reason = need_do_checkpoint(inode); 309 up_read(&F2FS_I(inode)->i_sem); 310 311 if (cp_reason) { 312 /* all the dirty node pages should be flushed for POR */ 313 ret = f2fs_sync_fs(inode->i_sb, 1); 314 315 /* 316 * We've secured consistency through sync_fs. Following pino 317 * will be used only for fsynced inodes after checkpoint. 318 */ 319 try_to_fix_pino(inode); 320 clear_inode_flag(inode, FI_APPEND_WRITE); 321 clear_inode_flag(inode, FI_UPDATE_WRITE); 322 goto out; 323 } 324sync_nodes: 325 atomic_inc(&sbi->wb_sync_req[NODE]); 326 ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic, &seq_id); 327 atomic_dec(&sbi->wb_sync_req[NODE]); 328 if (ret) 329 goto out; 330 331 /* if cp_error was enabled, we should avoid infinite loop */ 332 if (unlikely(f2fs_cp_error(sbi))) { 333 ret = -EIO; 334 goto out; 335 } 336 337 if (f2fs_need_inode_block_update(sbi, ino)) { 338 f2fs_mark_inode_dirty_sync(inode, true); 339 f2fs_write_inode(inode, NULL); 340 goto sync_nodes; 341 } 342 343 /* 344 * If it's atomic_write, it's just fine to keep write ordering. So 345 * here we don't need to wait for node write completion, since we use 346 * node chain which serializes node blocks. If one of node writes are 347 * reordered, we can see simply broken chain, resulting in stopping 348 * roll-forward recovery. It means we'll recover all or none node blocks 349 * given fsync mark. 350 */ 351 if (!atomic) { 352 ret = f2fs_wait_on_node_pages_writeback(sbi, seq_id); 353 if (ret) 354 goto out; 355 } 356 357 /* once recovery info is written, don't need to tack this */ 358 f2fs_remove_ino_entry(sbi, ino, APPEND_INO); 359 clear_inode_flag(inode, FI_APPEND_WRITE); 360flush_out: 361 if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER) 362 ret = f2fs_issue_flush(sbi, inode->i_ino); 363 if (!ret) { 364 f2fs_remove_ino_entry(sbi, ino, UPDATE_INO); 365 clear_inode_flag(inode, FI_UPDATE_WRITE); 366 f2fs_remove_ino_entry(sbi, ino, FLUSH_INO); 367 } 368 f2fs_update_time(sbi, REQ_TIME); 369out: 370 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret); 371 f2fs_trace_ios(NULL, 1); 372 return ret; 373} 374 375int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) 376{ 377 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file))))) 378 return -EIO; 379 return f2fs_do_sync_file(file, start, end, datasync, false); 380} 381 382static bool __found_offset(struct address_space *mapping, block_t blkaddr, 383 pgoff_t index, int whence) 384{ 385 switch (whence) { 386 case SEEK_DATA: 387 if (__is_valid_data_blkaddr(blkaddr)) 388 return true; 389 if (blkaddr == NEW_ADDR && 390 xa_get_mark(&mapping->i_pages, index, PAGECACHE_TAG_DIRTY)) 391 return true; 392 break; 393 case SEEK_HOLE: 394 if (blkaddr == NULL_ADDR) 395 return true; 396 break; 397 } 398 return false; 399} 400 401static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) 402{ 403 struct inode *inode = file->f_mapping->host; 404 loff_t maxbytes = inode->i_sb->s_maxbytes; 405 struct dnode_of_data dn; 406 pgoff_t pgofs, end_offset; 407 loff_t data_ofs = offset; 408 loff_t isize; 409 int err = 0; 410 411 inode_lock(inode); 412 413 isize = i_size_read(inode); 414 if (offset >= isize) 415 goto fail; 416 417 /* handle inline data case */ 418 if (f2fs_has_inline_data(inode)) { 419 if (whence == SEEK_HOLE) { 420 data_ofs = isize; 421 goto found; 422 } else if (whence == SEEK_DATA) { 423 data_ofs = offset; 424 goto found; 425 } 426 } 427 428 pgofs = (pgoff_t)(offset >> PAGE_SHIFT); 429 430 for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { 431 set_new_dnode(&dn, inode, NULL, NULL, 0); 432 err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE); 433 if (err && err != -ENOENT) { 434 goto fail; 435 } else if (err == -ENOENT) { 436 /* direct node does not exists */ 437 if (whence == SEEK_DATA) { 438 pgofs = f2fs_get_next_page_offset(&dn, pgofs); 439 continue; 440 } else { 441 goto found; 442 } 443 } 444 445 end_offset = ADDRS_PER_PAGE(dn.node_page, inode); 446 447 /* find data/hole in dnode block */ 448 for (; dn.ofs_in_node < end_offset; 449 dn.ofs_in_node++, pgofs++, 450 data_ofs = (loff_t)pgofs << PAGE_SHIFT) { 451 block_t blkaddr; 452 453 blkaddr = f2fs_data_blkaddr(&dn); 454 455 if (__is_valid_data_blkaddr(blkaddr) && 456 !f2fs_is_valid_blkaddr(F2FS_I_SB(inode), 457 blkaddr, DATA_GENERIC_ENHANCE)) { 458 f2fs_put_dnode(&dn); 459 goto fail; 460 } 461 462 if (__found_offset(file->f_mapping, blkaddr, 463 pgofs, whence)) { 464 f2fs_put_dnode(&dn); 465 goto found; 466 } 467 } 468 f2fs_put_dnode(&dn); 469 } 470 471 if (whence == SEEK_DATA) 472 goto fail; 473found: 474 if (whence == SEEK_HOLE && data_ofs > isize) 475 data_ofs = isize; 476 inode_unlock(inode); 477 return vfs_setpos(file, data_ofs, maxbytes); 478fail: 479 inode_unlock(inode); 480 return -ENXIO; 481} 482 483static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) 484{ 485 struct inode *inode = file->f_mapping->host; 486 loff_t maxbytes = inode->i_sb->s_maxbytes; 487 488 switch (whence) { 489 case SEEK_SET: 490 case SEEK_CUR: 491 case SEEK_END: 492 return generic_file_llseek_size(file, offset, whence, 493 maxbytes, i_size_read(inode)); 494 case SEEK_DATA: 495 case SEEK_HOLE: 496 if (offset < 0) 497 return -ENXIO; 498 return f2fs_seek_block(file, offset, whence); 499 } 500 501 return -EINVAL; 502} 503 504static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) 505{ 506 struct inode *inode = file_inode(file); 507 int err; 508 509 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) 510 return -EIO; 511 512 if (!f2fs_is_compress_backend_ready(inode)) 513 return -EOPNOTSUPP; 514 515 /* we don't need to use inline_data strictly */ 516 err = f2fs_convert_inline_inode(inode); 517 if (err) 518 return err; 519 520 file_accessed(file); 521 vma->vm_ops = &f2fs_file_vm_ops; 522 set_inode_flag(inode, FI_MMAP_FILE); 523 return 0; 524} 525 526static int f2fs_file_open(struct inode *inode, struct file *filp) 527{ 528 int err = fscrypt_file_open(inode, filp); 529 530 if (err) 531 return err; 532 533 if (!f2fs_is_compress_backend_ready(inode)) 534 return -EOPNOTSUPP; 535 536 err = fsverity_file_open(inode, filp); 537 if (err) 538 return err; 539 540 filp->f_mode |= FMODE_NOWAIT; 541 542 return dquot_file_open(inode, filp); 543} 544 545void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count) 546{ 547 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 548 struct f2fs_node *raw_node; 549 int nr_free = 0, ofs = dn->ofs_in_node, len = count; 550 __le32 *addr; 551 int base = 0; 552 bool compressed_cluster = false; 553 int cluster_index = 0, valid_blocks = 0; 554 int cluster_size = F2FS_I(dn->inode)->i_cluster_size; 555 bool released = !atomic_read(&F2FS_I(dn->inode)->i_compr_blocks); 556 557 if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode)) 558 base = get_extra_isize(dn->inode); 559 560 raw_node = F2FS_NODE(dn->node_page); 561 addr = blkaddr_in_node(raw_node) + base + ofs; 562 563 /* Assumption: truncateion starts with cluster */ 564 for (; count > 0; count--, addr++, dn->ofs_in_node++, cluster_index++) { 565 block_t blkaddr = le32_to_cpu(*addr); 566 567 if (f2fs_compressed_file(dn->inode) && 568 !(cluster_index & (cluster_size - 1))) { 569 if (compressed_cluster) 570 f2fs_i_compr_blocks_update(dn->inode, 571 valid_blocks, false); 572 compressed_cluster = (blkaddr == COMPRESS_ADDR); 573 valid_blocks = 0; 574 } 575 576 if (blkaddr == NULL_ADDR) 577 continue; 578 579 dn->data_blkaddr = NULL_ADDR; 580 f2fs_set_data_blkaddr(dn); 581 582 if (__is_valid_data_blkaddr(blkaddr)) { 583 if (!f2fs_is_valid_blkaddr(sbi, blkaddr, 584 DATA_GENERIC_ENHANCE)) 585 continue; 586 if (compressed_cluster) 587 valid_blocks++; 588 } 589 590 if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page)) 591 clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN); 592 593 f2fs_invalidate_blocks(sbi, blkaddr); 594 595 if (!released || blkaddr != COMPRESS_ADDR) 596 nr_free++; 597 } 598 599 if (compressed_cluster) 600 f2fs_i_compr_blocks_update(dn->inode, valid_blocks, false); 601 602 if (nr_free) { 603 pgoff_t fofs; 604 /* 605 * once we invalidate valid blkaddr in range [ofs, ofs + count], 606 * we will invalidate all blkaddr in the whole range. 607 */ 608 fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page), 609 dn->inode) + ofs; 610 f2fs_update_extent_cache_range(dn, fofs, 0, len); 611 dec_valid_block_count(sbi, dn->inode, nr_free); 612 } 613 dn->ofs_in_node = ofs; 614 615 f2fs_update_time(sbi, REQ_TIME); 616 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, 617 dn->ofs_in_node, nr_free); 618} 619 620void f2fs_truncate_data_blocks(struct dnode_of_data *dn) 621{ 622 f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK(dn->inode)); 623} 624 625static int truncate_partial_data_page(struct inode *inode, u64 from, 626 bool cache_only) 627{ 628 loff_t offset = from & (PAGE_SIZE - 1); 629 pgoff_t index = from >> PAGE_SHIFT; 630 struct address_space *mapping = inode->i_mapping; 631 struct page *page; 632 633 if (!offset && !cache_only) 634 return 0; 635 636 if (cache_only) { 637 page = find_lock_page(mapping, index); 638 if (page && PageUptodate(page)) 639 goto truncate_out; 640 f2fs_put_page(page, 1); 641 return 0; 642 } 643 644 page = f2fs_get_lock_data_page(inode, index, true); 645 if (IS_ERR(page)) 646 return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page); 647truncate_out: 648 f2fs_wait_on_page_writeback(page, DATA, true, true); 649 zero_user(page, offset, PAGE_SIZE - offset); 650 651 /* An encrypted inode should have a key and truncate the last page. */ 652 f2fs_bug_on(F2FS_I_SB(inode), cache_only && IS_ENCRYPTED(inode)); 653 if (!cache_only) 654 set_page_dirty(page); 655 f2fs_put_page(page, 1); 656 return 0; 657} 658 659int f2fs_do_truncate_blocks(struct inode *inode, u64 from, bool lock) 660{ 661 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 662 struct dnode_of_data dn; 663 pgoff_t free_from; 664 int count = 0, err = 0; 665 struct page *ipage; 666 bool truncate_page = false; 667 668 trace_f2fs_truncate_blocks_enter(inode, from); 669 670 free_from = (pgoff_t)F2FS_BLK_ALIGN(from); 671 672 if (free_from >= sbi->max_file_blocks) 673 goto free_partial; 674 675 if (lock) 676 f2fs_lock_op(sbi); 677 678 ipage = f2fs_get_node_page(sbi, inode->i_ino); 679 if (IS_ERR(ipage)) { 680 err = PTR_ERR(ipage); 681 goto out; 682 } 683 684 if (f2fs_has_inline_data(inode)) { 685 f2fs_truncate_inline_inode(inode, ipage, from); 686 f2fs_put_page(ipage, 1); 687 truncate_page = true; 688 goto out; 689 } 690 691 set_new_dnode(&dn, inode, ipage, NULL, 0); 692 err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA); 693 if (err) { 694 if (err == -ENOENT) 695 goto free_next; 696 goto out; 697 } 698 699 count = ADDRS_PER_PAGE(dn.node_page, inode); 700 701 count -= dn.ofs_in_node; 702 f2fs_bug_on(sbi, count < 0); 703 704 if (dn.ofs_in_node || IS_INODE(dn.node_page)) { 705 f2fs_truncate_data_blocks_range(&dn, count); 706 free_from += count; 707 } 708 709 f2fs_put_dnode(&dn); 710free_next: 711 err = f2fs_truncate_inode_blocks(inode, free_from); 712out: 713 if (lock) 714 f2fs_unlock_op(sbi); 715free_partial: 716 /* lastly zero out the first data page */ 717 if (!err) 718 err = truncate_partial_data_page(inode, from, truncate_page); 719 720 trace_f2fs_truncate_blocks_exit(inode, err); 721 return err; 722} 723 724int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock) 725{ 726 u64 free_from = from; 727 int err; 728 729#ifdef CONFIG_F2FS_FS_COMPRESSION 730 /* 731 * for compressed file, only support cluster size 732 * aligned truncation. 733 */ 734 if (f2fs_compressed_file(inode)) 735 free_from = round_up(from, 736 F2FS_I(inode)->i_cluster_size << PAGE_SHIFT); 737#endif 738 739 err = f2fs_do_truncate_blocks(inode, free_from, lock); 740 if (err) 741 return err; 742 743#ifdef CONFIG_F2FS_FS_COMPRESSION 744 if (from != free_from) { 745 err = f2fs_truncate_partial_cluster(inode, from, lock); 746 if (err) 747 return err; 748 } 749#endif 750 751 return 0; 752} 753 754int f2fs_truncate(struct inode *inode) 755{ 756 int err; 757 758 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) 759 return -EIO; 760 761 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 762 S_ISLNK(inode->i_mode))) 763 return 0; 764 765 trace_f2fs_truncate(inode); 766 767 if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) { 768 f2fs_show_injection_info(F2FS_I_SB(inode), FAULT_TRUNCATE); 769 return -EIO; 770 } 771 772 err = dquot_initialize(inode); 773 if (err) 774 return err; 775 776 /* we should check inline_data size */ 777 if (!f2fs_may_inline_data(inode)) { 778 err = f2fs_convert_inline_inode(inode); 779 if (err) 780 return err; 781 } 782 783 err = f2fs_truncate_blocks(inode, i_size_read(inode), true); 784 if (err) 785 return err; 786 787 inode->i_mtime = inode->i_ctime = current_time(inode); 788 f2fs_mark_inode_dirty_sync(inode, false); 789 return 0; 790} 791 792int f2fs_getattr(const struct path *path, struct kstat *stat, 793 u32 request_mask, unsigned int query_flags) 794{ 795 struct inode *inode = d_inode(path->dentry); 796 struct f2fs_inode_info *fi = F2FS_I(inode); 797 struct f2fs_inode *ri; 798 unsigned int flags; 799 800 if (f2fs_has_extra_attr(inode) && 801 f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) && 802 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) { 803 stat->result_mask |= STATX_BTIME; 804 stat->btime.tv_sec = fi->i_crtime.tv_sec; 805 stat->btime.tv_nsec = fi->i_crtime.tv_nsec; 806 } 807 808 flags = fi->i_flags; 809 if (flags & F2FS_COMPR_FL) 810 stat->attributes |= STATX_ATTR_COMPRESSED; 811 if (flags & F2FS_APPEND_FL) 812 stat->attributes |= STATX_ATTR_APPEND; 813 if (IS_ENCRYPTED(inode)) 814 stat->attributes |= STATX_ATTR_ENCRYPTED; 815 if (flags & F2FS_IMMUTABLE_FL) 816 stat->attributes |= STATX_ATTR_IMMUTABLE; 817 if (flags & F2FS_NODUMP_FL) 818 stat->attributes |= STATX_ATTR_NODUMP; 819 if (IS_VERITY(inode)) 820 stat->attributes |= STATX_ATTR_VERITY; 821 822 stat->attributes_mask |= (STATX_ATTR_COMPRESSED | 823 STATX_ATTR_APPEND | 824 STATX_ATTR_ENCRYPTED | 825 STATX_ATTR_IMMUTABLE | 826 STATX_ATTR_NODUMP | 827 STATX_ATTR_VERITY); 828 829 generic_fillattr(inode, stat); 830 831 /* we need to show initial sectors used for inline_data/dentries */ 832 if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) || 833 f2fs_has_inline_dentry(inode)) 834 stat->blocks += (stat->size + 511) >> 9; 835 836 return 0; 837} 838 839#ifdef CONFIG_F2FS_FS_POSIX_ACL 840static void __setattr_copy(struct inode *inode, const struct iattr *attr) 841{ 842 unsigned int ia_valid = attr->ia_valid; 843 844 if (ia_valid & ATTR_UID) 845 inode->i_uid = attr->ia_uid; 846 if (ia_valid & ATTR_GID) 847 inode->i_gid = attr->ia_gid; 848 if (ia_valid & ATTR_ATIME) 849 inode->i_atime = attr->ia_atime; 850 if (ia_valid & ATTR_MTIME) 851 inode->i_mtime = attr->ia_mtime; 852 if (ia_valid & ATTR_CTIME) 853 inode->i_ctime = attr->ia_ctime; 854 if (ia_valid & ATTR_MODE) { 855 umode_t mode = attr->ia_mode; 856 857 if (!in_group_p(inode->i_gid) && 858 !capable_wrt_inode_uidgid(inode, CAP_FSETID)) 859 mode &= ~S_ISGID; 860 set_acl_inode(inode, mode); 861 } 862} 863#else 864#define __setattr_copy setattr_copy 865#endif 866 867int f2fs_setattr(struct dentry *dentry, struct iattr *attr) 868{ 869 struct inode *inode = d_inode(dentry); 870 int err; 871 872 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) 873 return -EIO; 874 875 if (unlikely(IS_IMMUTABLE(inode))) 876 return -EPERM; 877 878 if (unlikely(IS_APPEND(inode) && 879 (attr->ia_valid & (ATTR_MODE | ATTR_UID | 880 ATTR_GID | ATTR_TIMES_SET)))) 881 return -EPERM; 882 883 if ((attr->ia_valid & ATTR_SIZE) && 884 !f2fs_is_compress_backend_ready(inode)) 885 return -EOPNOTSUPP; 886 887 err = setattr_prepare(dentry, attr); 888 if (err) 889 return err; 890 891 err = fscrypt_prepare_setattr(dentry, attr); 892 if (err) 893 return err; 894 895 err = fsverity_prepare_setattr(dentry, attr); 896 if (err) 897 return err; 898 899 if (is_quota_modification(inode, attr)) { 900 err = dquot_initialize(inode); 901 if (err) 902 return err; 903 } 904 if ((attr->ia_valid & ATTR_UID && 905 !uid_eq(attr->ia_uid, inode->i_uid)) || 906 (attr->ia_valid & ATTR_GID && 907 !gid_eq(attr->ia_gid, inode->i_gid))) { 908 f2fs_lock_op(F2FS_I_SB(inode)); 909 err = dquot_transfer(inode, attr); 910 if (err) { 911 set_sbi_flag(F2FS_I_SB(inode), 912 SBI_QUOTA_NEED_REPAIR); 913 f2fs_unlock_op(F2FS_I_SB(inode)); 914 return err; 915 } 916 /* 917 * update uid/gid under lock_op(), so that dquot and inode can 918 * be updated atomically. 919 */ 920 if (attr->ia_valid & ATTR_UID) 921 inode->i_uid = attr->ia_uid; 922 if (attr->ia_valid & ATTR_GID) 923 inode->i_gid = attr->ia_gid; 924 f2fs_mark_inode_dirty_sync(inode, true); 925 f2fs_unlock_op(F2FS_I_SB(inode)); 926 } 927 928 if (attr->ia_valid & ATTR_SIZE) { 929 loff_t old_size = i_size_read(inode); 930 931 if (attr->ia_size > MAX_INLINE_DATA(inode)) { 932 /* 933 * should convert inline inode before i_size_write to 934 * keep smaller than inline_data size with inline flag. 935 */ 936 err = f2fs_convert_inline_inode(inode); 937 if (err) 938 return err; 939 } 940 941 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); 942 down_write(&F2FS_I(inode)->i_mmap_sem); 943 944 truncate_setsize(inode, attr->ia_size); 945 946 if (attr->ia_size <= old_size) 947 err = f2fs_truncate(inode); 948 /* 949 * do not trim all blocks after i_size if target size is 950 * larger than i_size. 951 */ 952 up_write(&F2FS_I(inode)->i_mmap_sem); 953 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); 954 if (err) 955 return err; 956 957 spin_lock(&F2FS_I(inode)->i_size_lock); 958 inode->i_mtime = inode->i_ctime = current_time(inode); 959 F2FS_I(inode)->last_disk_size = i_size_read(inode); 960 spin_unlock(&F2FS_I(inode)->i_size_lock); 961 } 962 963 __setattr_copy(inode, attr); 964 965 if (attr->ia_valid & ATTR_MODE) { 966 err = posix_acl_chmod(inode, f2fs_get_inode_mode(inode)); 967 if (err || is_inode_flag_set(inode, FI_ACL_MODE)) { 968 inode->i_mode = F2FS_I(inode)->i_acl_mode; 969 clear_inode_flag(inode, FI_ACL_MODE); 970 } 971 } 972 973 /* file size may changed here */ 974 f2fs_mark_inode_dirty_sync(inode, true); 975 976 /* inode change will produce dirty node pages flushed by checkpoint */ 977 f2fs_balance_fs(F2FS_I_SB(inode), true); 978 979 return err; 980} 981 982const struct inode_operations f2fs_file_inode_operations = { 983 .getattr = f2fs_getattr, 984 .setattr = f2fs_setattr, 985 .get_acl = f2fs_get_acl, 986 .set_acl = f2fs_set_acl, 987 .listxattr = f2fs_listxattr, 988 .fiemap = f2fs_fiemap, 989}; 990 991static int fill_zero(struct inode *inode, pgoff_t index, 992 loff_t start, loff_t len) 993{ 994 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 995 struct page *page; 996 997 if (!len) 998 return 0; 999 1000 f2fs_balance_fs(sbi, true); 1001 1002 f2fs_lock_op(sbi); 1003 page = f2fs_get_new_data_page(inode, NULL, index, false); 1004 f2fs_unlock_op(sbi); 1005 1006 if (IS_ERR(page)) 1007 return PTR_ERR(page); 1008 1009 f2fs_wait_on_page_writeback(page, DATA, true, true); 1010 zero_user(page, start, len); 1011 set_page_dirty(page); 1012 f2fs_put_page(page, 1); 1013 return 0; 1014} 1015 1016int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) 1017{ 1018 int err; 1019 1020 while (pg_start < pg_end) { 1021 struct dnode_of_data dn; 1022 pgoff_t end_offset, count; 1023 1024 set_new_dnode(&dn, inode, NULL, NULL, 0); 1025 err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); 1026 if (err) { 1027 if (err == -ENOENT) { 1028 pg_start = f2fs_get_next_page_offset(&dn, 1029 pg_start); 1030 continue; 1031 } 1032 return err; 1033 } 1034 1035 end_offset = ADDRS_PER_PAGE(dn.node_page, inode); 1036 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); 1037 1038 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); 1039 1040 f2fs_truncate_data_blocks_range(&dn, count); 1041 f2fs_put_dnode(&dn); 1042 1043 pg_start += count; 1044 } 1045 return 0; 1046} 1047 1048static int punch_hole(struct inode *inode, loff_t offset, loff_t len) 1049{ 1050 pgoff_t pg_start, pg_end; 1051 loff_t off_start, off_end; 1052 int ret; 1053 1054 ret = f2fs_convert_inline_inode(inode); 1055 if (ret) 1056 return ret; 1057 1058 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; 1059 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; 1060 1061 off_start = offset & (PAGE_SIZE - 1); 1062 off_end = (offset + len) & (PAGE_SIZE - 1); 1063 1064 if (pg_start == pg_end) { 1065 ret = fill_zero(inode, pg_start, off_start, 1066 off_end - off_start); 1067 if (ret) 1068 return ret; 1069 } else { 1070 if (off_start) { 1071 ret = fill_zero(inode, pg_start++, off_start, 1072 PAGE_SIZE - off_start); 1073 if (ret) 1074 return ret; 1075 } 1076 if (off_end) { 1077 ret = fill_zero(inode, pg_end, 0, off_end); 1078 if (ret) 1079 return ret; 1080 } 1081 1082 if (pg_start < pg_end) { 1083 loff_t blk_start, blk_end; 1084 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1085 1086 f2fs_balance_fs(sbi, true); 1087 1088 blk_start = (loff_t)pg_start << PAGE_SHIFT; 1089 blk_end = (loff_t)pg_end << PAGE_SHIFT; 1090 1091 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); 1092 down_write(&F2FS_I(inode)->i_mmap_sem); 1093 1094 truncate_pagecache_range(inode, blk_start, blk_end - 1); 1095 1096 f2fs_lock_op(sbi); 1097 ret = f2fs_truncate_hole(inode, pg_start, pg_end); 1098 f2fs_unlock_op(sbi); 1099 1100 up_write(&F2FS_I(inode)->i_mmap_sem); 1101 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); 1102 } 1103 } 1104 1105 return ret; 1106} 1107 1108static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr, 1109 int *do_replace, pgoff_t off, pgoff_t len) 1110{ 1111 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1112 struct dnode_of_data dn; 1113 int ret, done, i; 1114 1115next_dnode: 1116 set_new_dnode(&dn, inode, NULL, NULL, 0); 1117 ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA); 1118 if (ret && ret != -ENOENT) { 1119 return ret; 1120 } else if (ret == -ENOENT) { 1121 if (dn.max_level == 0) 1122 return -ENOENT; 1123 done = min((pgoff_t)ADDRS_PER_BLOCK(inode) - 1124 dn.ofs_in_node, len); 1125 blkaddr += done; 1126 do_replace += done; 1127 goto next; 1128 } 1129 1130 done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) - 1131 dn.ofs_in_node, len); 1132 for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) { 1133 *blkaddr = f2fs_data_blkaddr(&dn); 1134 1135 if (__is_valid_data_blkaddr(*blkaddr) && 1136 !f2fs_is_valid_blkaddr(sbi, *blkaddr, 1137 DATA_GENERIC_ENHANCE)) { 1138 f2fs_put_dnode(&dn); 1139 return -EFSCORRUPTED; 1140 } 1141 1142 if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) { 1143 1144 if (f2fs_lfs_mode(sbi)) { 1145 f2fs_put_dnode(&dn); 1146 return -EOPNOTSUPP; 1147 } 1148 1149 /* do not invalidate this block address */ 1150 f2fs_update_data_blkaddr(&dn, NULL_ADDR); 1151 *do_replace = 1; 1152 } 1153 } 1154 f2fs_put_dnode(&dn); 1155next: 1156 len -= done; 1157 off += done; 1158 if (len) 1159 goto next_dnode; 1160 return 0; 1161} 1162 1163static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr, 1164 int *do_replace, pgoff_t off, int len) 1165{ 1166 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1167 struct dnode_of_data dn; 1168 int ret, i; 1169 1170 for (i = 0; i < len; i++, do_replace++, blkaddr++) { 1171 if (*do_replace == 0) 1172 continue; 1173 1174 set_new_dnode(&dn, inode, NULL, NULL, 0); 1175 ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA); 1176 if (ret) { 1177 dec_valid_block_count(sbi, inode, 1); 1178 f2fs_invalidate_blocks(sbi, *blkaddr); 1179 } else { 1180 f2fs_update_data_blkaddr(&dn, *blkaddr); 1181 } 1182 f2fs_put_dnode(&dn); 1183 } 1184 return 0; 1185} 1186 1187static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode, 1188 block_t *blkaddr, int *do_replace, 1189 pgoff_t src, pgoff_t dst, pgoff_t len, bool full) 1190{ 1191 struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode); 1192 pgoff_t i = 0; 1193 int ret; 1194 1195 while (i < len) { 1196 if (blkaddr[i] == NULL_ADDR && !full) { 1197 i++; 1198 continue; 1199 } 1200 1201 if (do_replace[i] || blkaddr[i] == NULL_ADDR) { 1202 struct dnode_of_data dn; 1203 struct node_info ni; 1204 size_t new_size; 1205 pgoff_t ilen; 1206 1207 set_new_dnode(&dn, dst_inode, NULL, NULL, 0); 1208 ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE); 1209 if (ret) 1210 return ret; 1211 1212 ret = f2fs_get_node_info(sbi, dn.nid, &ni); 1213 if (ret) { 1214 f2fs_put_dnode(&dn); 1215 return ret; 1216 } 1217 1218 ilen = min((pgoff_t) 1219 ADDRS_PER_PAGE(dn.node_page, dst_inode) - 1220 dn.ofs_in_node, len - i); 1221 do { 1222 dn.data_blkaddr = f2fs_data_blkaddr(&dn); 1223 f2fs_truncate_data_blocks_range(&dn, 1); 1224 1225 if (do_replace[i]) { 1226 f2fs_i_blocks_write(src_inode, 1227 1, false, false); 1228 f2fs_i_blocks_write(dst_inode, 1229 1, true, false); 1230 f2fs_replace_block(sbi, &dn, dn.data_blkaddr, 1231 blkaddr[i], ni.version, true, false); 1232 1233 do_replace[i] = 0; 1234 } 1235 dn.ofs_in_node++; 1236 i++; 1237 new_size = (loff_t)(dst + i) << PAGE_SHIFT; 1238 if (dst_inode->i_size < new_size) 1239 f2fs_i_size_write(dst_inode, new_size); 1240 } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR)); 1241 1242 f2fs_put_dnode(&dn); 1243 } else { 1244 struct page *psrc, *pdst; 1245 1246 psrc = f2fs_get_lock_data_page(src_inode, 1247 src + i, true); 1248 if (IS_ERR(psrc)) 1249 return PTR_ERR(psrc); 1250 pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i, 1251 true); 1252 if (IS_ERR(pdst)) { 1253 f2fs_put_page(psrc, 1); 1254 return PTR_ERR(pdst); 1255 } 1256 f2fs_copy_page(psrc, pdst); 1257 set_page_dirty(pdst); 1258 f2fs_put_page(pdst, 1); 1259 f2fs_put_page(psrc, 1); 1260 1261 ret = f2fs_truncate_hole(src_inode, 1262 src + i, src + i + 1); 1263 if (ret) 1264 return ret; 1265 i++; 1266 } 1267 } 1268 return 0; 1269} 1270 1271static int __exchange_data_block(struct inode *src_inode, 1272 struct inode *dst_inode, pgoff_t src, pgoff_t dst, 1273 pgoff_t len, bool full) 1274{ 1275 block_t *src_blkaddr; 1276 int *do_replace; 1277 pgoff_t olen; 1278 int ret; 1279 1280 while (len) { 1281 olen = min((pgoff_t)4 * ADDRS_PER_BLOCK(src_inode), len); 1282 1283 src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode), 1284 array_size(olen, sizeof(block_t)), 1285 GFP_NOFS); 1286 if (!src_blkaddr) 1287 return -ENOMEM; 1288 1289 do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode), 1290 array_size(olen, sizeof(int)), 1291 GFP_NOFS); 1292 if (!do_replace) { 1293 kvfree(src_blkaddr); 1294 return -ENOMEM; 1295 } 1296 1297 ret = __read_out_blkaddrs(src_inode, src_blkaddr, 1298 do_replace, src, olen); 1299 if (ret) 1300 goto roll_back; 1301 1302 ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr, 1303 do_replace, src, dst, olen, full); 1304 if (ret) 1305 goto roll_back; 1306 1307 src += olen; 1308 dst += olen; 1309 len -= olen; 1310 1311 kvfree(src_blkaddr); 1312 kvfree(do_replace); 1313 } 1314 return 0; 1315 1316roll_back: 1317 __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen); 1318 kvfree(src_blkaddr); 1319 kvfree(do_replace); 1320 return ret; 1321} 1322 1323static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len) 1324{ 1325 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1326 pgoff_t nrpages = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE); 1327 pgoff_t start = offset >> PAGE_SHIFT; 1328 pgoff_t end = (offset + len) >> PAGE_SHIFT; 1329 int ret; 1330 1331 f2fs_balance_fs(sbi, true); 1332 1333 /* avoid gc operation during block exchange */ 1334 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); 1335 down_write(&F2FS_I(inode)->i_mmap_sem); 1336 1337 f2fs_lock_op(sbi); 1338 f2fs_drop_extent_tree(inode); 1339 truncate_pagecache(inode, offset); 1340 ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true); 1341 f2fs_unlock_op(sbi); 1342 1343 up_write(&F2FS_I(inode)->i_mmap_sem); 1344 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); 1345 return ret; 1346} 1347 1348static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) 1349{ 1350 loff_t new_size; 1351 int ret; 1352 1353 if (offset + len >= i_size_read(inode)) 1354 return -EINVAL; 1355 1356 /* collapse range should be aligned to block size of f2fs. */ 1357 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) 1358 return -EINVAL; 1359 1360 ret = f2fs_convert_inline_inode(inode); 1361 if (ret) 1362 return ret; 1363 1364 /* write out all dirty pages from offset */ 1365 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); 1366 if (ret) 1367 return ret; 1368 1369 ret = f2fs_do_collapse(inode, offset, len); 1370 if (ret) 1371 return ret; 1372 1373 /* write out all moved pages, if possible */ 1374 down_write(&F2FS_I(inode)->i_mmap_sem); 1375 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); 1376 truncate_pagecache(inode, offset); 1377 1378 new_size = i_size_read(inode) - len; 1379 ret = f2fs_truncate_blocks(inode, new_size, true); 1380 up_write(&F2FS_I(inode)->i_mmap_sem); 1381 if (!ret) 1382 f2fs_i_size_write(inode, new_size); 1383 return ret; 1384} 1385 1386static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start, 1387 pgoff_t end) 1388{ 1389 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 1390 pgoff_t index = start; 1391 unsigned int ofs_in_node = dn->ofs_in_node; 1392 blkcnt_t count = 0; 1393 int ret; 1394 1395 for (; index < end; index++, dn->ofs_in_node++) { 1396 if (f2fs_data_blkaddr(dn) == NULL_ADDR) 1397 count++; 1398 } 1399 1400 dn->ofs_in_node = ofs_in_node; 1401 ret = f2fs_reserve_new_blocks(dn, count); 1402 if (ret) 1403 return ret; 1404 1405 dn->ofs_in_node = ofs_in_node; 1406 for (index = start; index < end; index++, dn->ofs_in_node++) { 1407 dn->data_blkaddr = f2fs_data_blkaddr(dn); 1408 /* 1409 * f2fs_reserve_new_blocks will not guarantee entire block 1410 * allocation. 1411 */ 1412 if (dn->data_blkaddr == NULL_ADDR) { 1413 ret = -ENOSPC; 1414 break; 1415 } 1416 1417 if (dn->data_blkaddr == NEW_ADDR) 1418 continue; 1419 1420 if (!f2fs_is_valid_blkaddr(sbi, dn->data_blkaddr, 1421 DATA_GENERIC_ENHANCE)) { 1422 ret = -EFSCORRUPTED; 1423 break; 1424 } 1425 1426 f2fs_invalidate_blocks(sbi, dn->data_blkaddr); 1427 dn->data_blkaddr = NEW_ADDR; 1428 f2fs_set_data_blkaddr(dn); 1429 } 1430 1431 f2fs_update_extent_cache_range(dn, start, 0, index - start); 1432 1433 return ret; 1434} 1435 1436static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, 1437 int mode) 1438{ 1439 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1440 struct address_space *mapping = inode->i_mapping; 1441 pgoff_t index, pg_start, pg_end; 1442 loff_t new_size = i_size_read(inode); 1443 loff_t off_start, off_end; 1444 int ret = 0; 1445 1446 ret = inode_newsize_ok(inode, (len + offset)); 1447 if (ret) 1448 return ret; 1449 1450 ret = f2fs_convert_inline_inode(inode); 1451 if (ret) 1452 return ret; 1453 1454 ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); 1455 if (ret) 1456 return ret; 1457 1458 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; 1459 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; 1460 1461 off_start = offset & (PAGE_SIZE - 1); 1462 off_end = (offset + len) & (PAGE_SIZE - 1); 1463 1464 if (pg_start == pg_end) { 1465 ret = fill_zero(inode, pg_start, off_start, 1466 off_end - off_start); 1467 if (ret) 1468 return ret; 1469 1470 new_size = max_t(loff_t, new_size, offset + len); 1471 } else { 1472 if (off_start) { 1473 ret = fill_zero(inode, pg_start++, off_start, 1474 PAGE_SIZE - off_start); 1475 if (ret) 1476 return ret; 1477 1478 new_size = max_t(loff_t, new_size, 1479 (loff_t)pg_start << PAGE_SHIFT); 1480 } 1481 1482 for (index = pg_start; index < pg_end;) { 1483 struct dnode_of_data dn; 1484 unsigned int end_offset; 1485 pgoff_t end; 1486 1487 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); 1488 down_write(&F2FS_I(inode)->i_mmap_sem); 1489 1490 truncate_pagecache_range(inode, 1491 (loff_t)index << PAGE_SHIFT, 1492 ((loff_t)pg_end << PAGE_SHIFT) - 1); 1493 1494 f2fs_lock_op(sbi); 1495 1496 set_new_dnode(&dn, inode, NULL, NULL, 0); 1497 ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE); 1498 if (ret) { 1499 f2fs_unlock_op(sbi); 1500 up_write(&F2FS_I(inode)->i_mmap_sem); 1501 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); 1502 goto out; 1503 } 1504 1505 end_offset = ADDRS_PER_PAGE(dn.node_page, inode); 1506 end = min(pg_end, end_offset - dn.ofs_in_node + index); 1507 1508 ret = f2fs_do_zero_range(&dn, index, end); 1509 f2fs_put_dnode(&dn); 1510 1511 f2fs_unlock_op(sbi); 1512 up_write(&F2FS_I(inode)->i_mmap_sem); 1513 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); 1514 1515 f2fs_balance_fs(sbi, dn.node_changed); 1516 1517 if (ret) 1518 goto out; 1519 1520 index = end; 1521 new_size = max_t(loff_t, new_size, 1522 (loff_t)index << PAGE_SHIFT); 1523 } 1524 1525 if (off_end) { 1526 ret = fill_zero(inode, pg_end, 0, off_end); 1527 if (ret) 1528 goto out; 1529 1530 new_size = max_t(loff_t, new_size, offset + len); 1531 } 1532 } 1533 1534out: 1535 if (new_size > i_size_read(inode)) { 1536 if (mode & FALLOC_FL_KEEP_SIZE) 1537 file_set_keep_isize(inode); 1538 else 1539 f2fs_i_size_write(inode, new_size); 1540 } 1541 return ret; 1542} 1543 1544static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) 1545{ 1546 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1547 pgoff_t nr, pg_start, pg_end, delta, idx; 1548 loff_t new_size; 1549 int ret = 0; 1550 1551 new_size = i_size_read(inode) + len; 1552 ret = inode_newsize_ok(inode, new_size); 1553 if (ret) 1554 return ret; 1555 1556 if (offset >= i_size_read(inode)) 1557 return -EINVAL; 1558 1559 /* insert range should be aligned to block size of f2fs. */ 1560 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) 1561 return -EINVAL; 1562 1563 ret = f2fs_convert_inline_inode(inode); 1564 if (ret) 1565 return ret; 1566 1567 f2fs_balance_fs(sbi, true); 1568 1569 down_write(&F2FS_I(inode)->i_mmap_sem); 1570 ret = f2fs_truncate_blocks(inode, i_size_read(inode), true); 1571 up_write(&F2FS_I(inode)->i_mmap_sem); 1572 if (ret) 1573 return ret; 1574 1575 /* write out all dirty pages from offset */ 1576 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); 1577 if (ret) 1578 return ret; 1579 1580 pg_start = offset >> PAGE_SHIFT; 1581 pg_end = (offset + len) >> PAGE_SHIFT; 1582 delta = pg_end - pg_start; 1583 idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE); 1584 1585 /* avoid gc operation during block exchange */ 1586 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); 1587 down_write(&F2FS_I(inode)->i_mmap_sem); 1588 truncate_pagecache(inode, offset); 1589 1590 while (!ret && idx > pg_start) { 1591 nr = idx - pg_start; 1592 if (nr > delta) 1593 nr = delta; 1594 idx -= nr; 1595 1596 f2fs_lock_op(sbi); 1597 f2fs_drop_extent_tree(inode); 1598 1599 ret = __exchange_data_block(inode, inode, idx, 1600 idx + delta, nr, false); 1601 f2fs_unlock_op(sbi); 1602 } 1603 up_write(&F2FS_I(inode)->i_mmap_sem); 1604 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); 1605 1606 /* write out all moved pages, if possible */ 1607 down_write(&F2FS_I(inode)->i_mmap_sem); 1608 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); 1609 truncate_pagecache(inode, offset); 1610 up_write(&F2FS_I(inode)->i_mmap_sem); 1611 1612 if (!ret) 1613 f2fs_i_size_write(inode, new_size); 1614 return ret; 1615} 1616 1617static int expand_inode_data(struct inode *inode, loff_t offset, 1618 loff_t len, int mode) 1619{ 1620 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1621 struct f2fs_map_blocks map = { .m_next_pgofs = NULL, 1622 .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE, 1623 .m_may_create = true }; 1624 pgoff_t pg_start, pg_end; 1625 loff_t new_size = i_size_read(inode); 1626 loff_t off_end; 1627 block_t expanded = 0; 1628 int err; 1629 1630 err = inode_newsize_ok(inode, (len + offset)); 1631 if (err) 1632 return err; 1633 1634 err = f2fs_convert_inline_inode(inode); 1635 if (err) 1636 return err; 1637 1638 f2fs_balance_fs(sbi, true); 1639 1640 pg_start = ((unsigned long long)offset) >> PAGE_SHIFT; 1641 pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT; 1642 off_end = (offset + len) & (PAGE_SIZE - 1); 1643 1644 map.m_lblk = pg_start; 1645 map.m_len = pg_end - pg_start; 1646 if (off_end) 1647 map.m_len++; 1648 1649 if (!map.m_len) 1650 return 0; 1651 1652 if (f2fs_is_pinned_file(inode)) { 1653 block_t sec_blks = BLKS_PER_SEC(sbi); 1654 block_t sec_len = roundup(map.m_len, sec_blks); 1655 1656 map.m_len = sec_blks; 1657next_alloc: 1658 if (has_not_enough_free_secs(sbi, 0, 1659 GET_SEC_FROM_SEG(sbi, overprovision_segments(sbi)))) { 1660 down_write(&sbi->gc_lock); 1661 err = f2fs_gc(sbi, true, false, false, NULL_SEGNO); 1662 if (err && err != -ENODATA && err != -EAGAIN) 1663 goto out_err; 1664 } 1665 1666 down_write(&sbi->pin_sem); 1667 1668 f2fs_lock_op(sbi); 1669 f2fs_allocate_new_section(sbi, CURSEG_COLD_DATA_PINNED); 1670 f2fs_unlock_op(sbi); 1671 1672 map.m_seg_type = CURSEG_COLD_DATA_PINNED; 1673 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_DIO); 1674 1675 up_write(&sbi->pin_sem); 1676 1677 expanded += map.m_len; 1678 sec_len -= map.m_len; 1679 map.m_lblk += map.m_len; 1680 if (!err && sec_len) 1681 goto next_alloc; 1682 1683 map.m_len = expanded; 1684 } else { 1685 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO); 1686 expanded = map.m_len; 1687 } 1688out_err: 1689 if (err) { 1690 pgoff_t last_off; 1691 1692 if (!expanded) 1693 return err; 1694 1695 last_off = pg_start + expanded - 1; 1696 1697 /* update new size to the failed position */ 1698 new_size = (last_off == pg_end) ? offset + len : 1699 (loff_t)(last_off + 1) << PAGE_SHIFT; 1700 } else { 1701 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end; 1702 } 1703 1704 if (new_size > i_size_read(inode)) { 1705 if (mode & FALLOC_FL_KEEP_SIZE) 1706 file_set_keep_isize(inode); 1707 else 1708 f2fs_i_size_write(inode, new_size); 1709 } 1710 1711 return err; 1712} 1713 1714static long f2fs_fallocate(struct file *file, int mode, 1715 loff_t offset, loff_t len) 1716{ 1717 struct inode *inode = file_inode(file); 1718 long ret = 0; 1719 1720 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) 1721 return -EIO; 1722 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode))) 1723 return -ENOSPC; 1724 if (!f2fs_is_compress_backend_ready(inode)) 1725 return -EOPNOTSUPP; 1726 1727 /* f2fs only support ->fallocate for regular file */ 1728 if (!S_ISREG(inode->i_mode)) 1729 return -EINVAL; 1730 1731 if (IS_ENCRYPTED(inode) && 1732 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) 1733 return -EOPNOTSUPP; 1734 1735 if (f2fs_compressed_file(inode) && 1736 (mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE | 1737 FALLOC_FL_ZERO_RANGE | FALLOC_FL_INSERT_RANGE))) 1738 return -EOPNOTSUPP; 1739 1740 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | 1741 FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | 1742 FALLOC_FL_INSERT_RANGE)) 1743 return -EOPNOTSUPP; 1744 1745 inode_lock(inode); 1746 1747 ret = file_modified(file); 1748 if (ret) 1749 goto out; 1750 1751 if (mode & FALLOC_FL_PUNCH_HOLE) { 1752 if (offset >= inode->i_size) 1753 goto out; 1754 1755 ret = punch_hole(inode, offset, len); 1756 } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { 1757 ret = f2fs_collapse_range(inode, offset, len); 1758 } else if (mode & FALLOC_FL_ZERO_RANGE) { 1759 ret = f2fs_zero_range(inode, offset, len, mode); 1760 } else if (mode & FALLOC_FL_INSERT_RANGE) { 1761 ret = f2fs_insert_range(inode, offset, len); 1762 } else { 1763 ret = expand_inode_data(inode, offset, len, mode); 1764 } 1765 1766 if (!ret) { 1767 inode->i_mtime = inode->i_ctime = current_time(inode); 1768 f2fs_mark_inode_dirty_sync(inode, false); 1769 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); 1770 } 1771 1772out: 1773 inode_unlock(inode); 1774 1775 trace_f2fs_fallocate(inode, mode, offset, len, ret); 1776 return ret; 1777} 1778 1779static int f2fs_release_file(struct inode *inode, struct file *filp) 1780{ 1781 /* 1782 * f2fs_relase_file is called at every close calls. So we should 1783 * not drop any inmemory pages by close called by other process. 1784 */ 1785 if (!(filp->f_mode & FMODE_WRITE) || 1786 atomic_read(&inode->i_writecount) != 1) 1787 return 0; 1788 1789 /* some remained atomic pages should discarded */ 1790 if (f2fs_is_atomic_file(inode)) 1791 f2fs_drop_inmem_pages(inode); 1792 if (f2fs_is_volatile_file(inode)) { 1793 set_inode_flag(inode, FI_DROP_CACHE); 1794 filemap_fdatawrite(inode->i_mapping); 1795 clear_inode_flag(inode, FI_DROP_CACHE); 1796 clear_inode_flag(inode, FI_VOLATILE_FILE); 1797 stat_dec_volatile_write(inode); 1798 } 1799 return 0; 1800} 1801 1802static int f2fs_file_flush(struct file *file, fl_owner_t id) 1803{ 1804 struct inode *inode = file_inode(file); 1805 1806 /* 1807 * If the process doing a transaction is crashed, we should do 1808 * roll-back. Otherwise, other reader/write can see corrupted database 1809 * until all the writers close its file. Since this should be done 1810 * before dropping file lock, it needs to do in ->flush. 1811 */ 1812 if (f2fs_is_atomic_file(inode) && 1813 F2FS_I(inode)->inmem_task == current) 1814 f2fs_drop_inmem_pages(inode); 1815 return 0; 1816} 1817 1818static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask) 1819{ 1820 struct f2fs_inode_info *fi = F2FS_I(inode); 1821 u32 masked_flags = fi->i_flags & mask; 1822 1823 f2fs_bug_on(F2FS_I_SB(inode), (iflags & ~mask)); 1824 1825 /* Is it quota file? Do not allow user to mess with it */ 1826 if (IS_NOQUOTA(inode)) 1827 return -EPERM; 1828 1829 if ((iflags ^ masked_flags) & F2FS_CASEFOLD_FL) { 1830 if (!f2fs_sb_has_casefold(F2FS_I_SB(inode))) 1831 return -EOPNOTSUPP; 1832 if (!f2fs_empty_dir(inode)) 1833 return -ENOTEMPTY; 1834 } 1835 1836 if (iflags & (F2FS_COMPR_FL | F2FS_NOCOMP_FL)) { 1837 if (!f2fs_sb_has_compression(F2FS_I_SB(inode))) 1838 return -EOPNOTSUPP; 1839 if ((iflags & F2FS_COMPR_FL) && (iflags & F2FS_NOCOMP_FL)) 1840 return -EINVAL; 1841 } 1842 1843 if ((iflags ^ masked_flags) & F2FS_COMPR_FL) { 1844 if (masked_flags & F2FS_COMPR_FL) { 1845 if (!f2fs_disable_compressed_file(inode)) 1846 return -EINVAL; 1847 } else { 1848 if (!f2fs_may_compress(inode)) 1849 return -EINVAL; 1850 if (S_ISREG(inode->i_mode) && inode->i_size) 1851 return -EINVAL; 1852 1853 set_compress_context(inode); 1854 } 1855 } 1856 1857 fi->i_flags = iflags | (fi->i_flags & ~mask); 1858 f2fs_bug_on(F2FS_I_SB(inode), (fi->i_flags & F2FS_COMPR_FL) && 1859 (fi->i_flags & F2FS_NOCOMP_FL)); 1860 1861 if (fi->i_flags & F2FS_PROJINHERIT_FL) 1862 set_inode_flag(inode, FI_PROJ_INHERIT); 1863 else 1864 clear_inode_flag(inode, FI_PROJ_INHERIT); 1865 1866 inode->i_ctime = current_time(inode); 1867 f2fs_set_inode_flags(inode); 1868 f2fs_mark_inode_dirty_sync(inode, true); 1869 return 0; 1870} 1871 1872/* FS_IOC_GETFLAGS and FS_IOC_SETFLAGS support */ 1873 1874/* 1875 * To make a new on-disk f2fs i_flag gettable via FS_IOC_GETFLAGS, add an entry 1876 * for it to f2fs_fsflags_map[], and add its FS_*_FL equivalent to 1877 * F2FS_GETTABLE_FS_FL. To also make it settable via FS_IOC_SETFLAGS, also add 1878 * its FS_*_FL equivalent to F2FS_SETTABLE_FS_FL. 1879 */ 1880 1881static const struct { 1882 u32 iflag; 1883 u32 fsflag; 1884} f2fs_fsflags_map[] = { 1885 { F2FS_COMPR_FL, FS_COMPR_FL }, 1886 { F2FS_SYNC_FL, FS_SYNC_FL }, 1887 { F2FS_IMMUTABLE_FL, FS_IMMUTABLE_FL }, 1888 { F2FS_APPEND_FL, FS_APPEND_FL }, 1889 { F2FS_NODUMP_FL, FS_NODUMP_FL }, 1890 { F2FS_NOATIME_FL, FS_NOATIME_FL }, 1891 { F2FS_NOCOMP_FL, FS_NOCOMP_FL }, 1892 { F2FS_INDEX_FL, FS_INDEX_FL }, 1893 { F2FS_DIRSYNC_FL, FS_DIRSYNC_FL }, 1894 { F2FS_PROJINHERIT_FL, FS_PROJINHERIT_FL }, 1895 { F2FS_CASEFOLD_FL, FS_CASEFOLD_FL }, 1896}; 1897 1898#define F2FS_GETTABLE_FS_FL ( \ 1899 FS_COMPR_FL | \ 1900 FS_SYNC_FL | \ 1901 FS_IMMUTABLE_FL | \ 1902 FS_APPEND_FL | \ 1903 FS_NODUMP_FL | \ 1904 FS_NOATIME_FL | \ 1905 FS_NOCOMP_FL | \ 1906 FS_INDEX_FL | \ 1907 FS_DIRSYNC_FL | \ 1908 FS_PROJINHERIT_FL | \ 1909 FS_ENCRYPT_FL | \ 1910 FS_INLINE_DATA_FL | \ 1911 FS_NOCOW_FL | \ 1912 FS_VERITY_FL | \ 1913 FS_CASEFOLD_FL) 1914 1915#define F2FS_SETTABLE_FS_FL ( \ 1916 FS_COMPR_FL | \ 1917 FS_SYNC_FL | \ 1918 FS_IMMUTABLE_FL | \ 1919 FS_APPEND_FL | \ 1920 FS_NODUMP_FL | \ 1921 FS_NOATIME_FL | \ 1922 FS_NOCOMP_FL | \ 1923 FS_DIRSYNC_FL | \ 1924 FS_PROJINHERIT_FL | \ 1925 FS_CASEFOLD_FL) 1926 1927/* Convert f2fs on-disk i_flags to FS_IOC_{GET,SET}FLAGS flags */ 1928static inline u32 f2fs_iflags_to_fsflags(u32 iflags) 1929{ 1930 u32 fsflags = 0; 1931 int i; 1932 1933 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++) 1934 if (iflags & f2fs_fsflags_map[i].iflag) 1935 fsflags |= f2fs_fsflags_map[i].fsflag; 1936 1937 return fsflags; 1938} 1939 1940/* Convert FS_IOC_{GET,SET}FLAGS flags to f2fs on-disk i_flags */ 1941static inline u32 f2fs_fsflags_to_iflags(u32 fsflags) 1942{ 1943 u32 iflags = 0; 1944 int i; 1945 1946 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++) 1947 if (fsflags & f2fs_fsflags_map[i].fsflag) 1948 iflags |= f2fs_fsflags_map[i].iflag; 1949 1950 return iflags; 1951} 1952 1953static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) 1954{ 1955 struct inode *inode = file_inode(filp); 1956 struct f2fs_inode_info *fi = F2FS_I(inode); 1957 u32 fsflags = f2fs_iflags_to_fsflags(fi->i_flags); 1958 1959 if (IS_ENCRYPTED(inode)) 1960 fsflags |= FS_ENCRYPT_FL; 1961 if (IS_VERITY(inode)) 1962 fsflags |= FS_VERITY_FL; 1963 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) 1964 fsflags |= FS_INLINE_DATA_FL; 1965 if (is_inode_flag_set(inode, FI_PIN_FILE)) 1966 fsflags |= FS_NOCOW_FL; 1967 1968 fsflags &= F2FS_GETTABLE_FS_FL; 1969 1970 return put_user(fsflags, (int __user *)arg); 1971} 1972 1973static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) 1974{ 1975 struct inode *inode = file_inode(filp); 1976 struct f2fs_inode_info *fi = F2FS_I(inode); 1977 u32 fsflags, old_fsflags; 1978 u32 iflags; 1979 int ret; 1980 1981 if (!inode_owner_or_capable(inode)) 1982 return -EACCES; 1983 1984 if (get_user(fsflags, (int __user *)arg)) 1985 return -EFAULT; 1986 1987 if (fsflags & ~F2FS_GETTABLE_FS_FL) 1988 return -EOPNOTSUPP; 1989 fsflags &= F2FS_SETTABLE_FS_FL; 1990 1991 iflags = f2fs_fsflags_to_iflags(fsflags); 1992 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags) 1993 return -EOPNOTSUPP; 1994 1995 ret = mnt_want_write_file(filp); 1996 if (ret) 1997 return ret; 1998 1999 inode_lock(inode); 2000 2001 old_fsflags = f2fs_iflags_to_fsflags(fi->i_flags); 2002 ret = vfs_ioc_setflags_prepare(inode, old_fsflags, fsflags); 2003 if (ret) 2004 goto out; 2005 2006 ret = f2fs_setflags_common(inode, iflags, 2007 f2fs_fsflags_to_iflags(F2FS_SETTABLE_FS_FL)); 2008out: 2009 inode_unlock(inode); 2010 mnt_drop_write_file(filp); 2011 return ret; 2012} 2013 2014static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) 2015{ 2016 struct inode *inode = file_inode(filp); 2017 2018 return put_user(inode->i_generation, (int __user *)arg); 2019} 2020 2021static int f2fs_ioc_start_atomic_write(struct file *filp) 2022{ 2023 struct inode *inode = file_inode(filp); 2024 struct f2fs_inode_info *fi = F2FS_I(inode); 2025 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2026 int ret; 2027 2028 if (!inode_owner_or_capable(inode)) 2029 return -EACCES; 2030 2031 if (!S_ISREG(inode->i_mode)) 2032 return -EINVAL; 2033 2034 if (filp->f_flags & O_DIRECT) 2035 return -EINVAL; 2036 2037 ret = mnt_want_write_file(filp); 2038 if (ret) 2039 return ret; 2040 2041 inode_lock(inode); 2042 2043 if (!f2fs_disable_compressed_file(inode)) { 2044 ret = -EINVAL; 2045 goto out; 2046 } 2047 2048 if (f2fs_is_atomic_file(inode)) { 2049 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) 2050 ret = -EINVAL; 2051 goto out; 2052 } 2053 2054 ret = f2fs_convert_inline_inode(inode); 2055 if (ret) 2056 goto out; 2057 2058 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); 2059 2060 /* 2061 * Should wait end_io to count F2FS_WB_CP_DATA correctly by 2062 * f2fs_is_atomic_file. 2063 */ 2064 if (get_dirty_pages(inode)) 2065 f2fs_warn(F2FS_I_SB(inode), "Unexpected flush for atomic writes: ino=%lu, npages=%u", 2066 inode->i_ino, get_dirty_pages(inode)); 2067 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); 2068 if (ret) { 2069 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); 2070 goto out; 2071 } 2072 2073 spin_lock(&sbi->inode_lock[ATOMIC_FILE]); 2074 if (list_empty(&fi->inmem_ilist)) 2075 list_add_tail(&fi->inmem_ilist, &sbi->inode_list[ATOMIC_FILE]); 2076 sbi->atomic_files++; 2077 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); 2078 2079 /* add inode in inmem_list first and set atomic_file */ 2080 set_inode_flag(inode, FI_ATOMIC_FILE); 2081 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST); 2082 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); 2083 2084 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); 2085 F2FS_I(inode)->inmem_task = current; 2086 stat_update_max_atomic_write(inode); 2087out: 2088 inode_unlock(inode); 2089 mnt_drop_write_file(filp); 2090 return ret; 2091} 2092 2093static int f2fs_ioc_commit_atomic_write(struct file *filp) 2094{ 2095 struct inode *inode = file_inode(filp); 2096 int ret; 2097 2098 if (!inode_owner_or_capable(inode)) 2099 return -EACCES; 2100 2101 ret = mnt_want_write_file(filp); 2102 if (ret) 2103 return ret; 2104 2105 f2fs_balance_fs(F2FS_I_SB(inode), true); 2106 2107 inode_lock(inode); 2108 2109 if (f2fs_is_volatile_file(inode)) { 2110 ret = -EINVAL; 2111 goto err_out; 2112 } 2113 2114 if (f2fs_is_atomic_file(inode)) { 2115 ret = f2fs_commit_inmem_pages(inode); 2116 if (ret) 2117 goto err_out; 2118 2119 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); 2120 if (!ret) 2121 f2fs_drop_inmem_pages(inode); 2122 } else { 2123 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false); 2124 } 2125err_out: 2126 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) { 2127 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST); 2128 ret = -EINVAL; 2129 } 2130 inode_unlock(inode); 2131 mnt_drop_write_file(filp); 2132 return ret; 2133} 2134 2135static int f2fs_ioc_start_volatile_write(struct file *filp) 2136{ 2137 struct inode *inode = file_inode(filp); 2138 int ret; 2139 2140 if (!inode_owner_or_capable(inode)) 2141 return -EACCES; 2142 2143 if (!S_ISREG(inode->i_mode)) 2144 return -EINVAL; 2145 2146 ret = mnt_want_write_file(filp); 2147 if (ret) 2148 return ret; 2149 2150 inode_lock(inode); 2151 2152 if (f2fs_is_volatile_file(inode)) 2153 goto out; 2154 2155 ret = f2fs_convert_inline_inode(inode); 2156 if (ret) 2157 goto out; 2158 2159 stat_inc_volatile_write(inode); 2160 stat_update_max_volatile_write(inode); 2161 2162 set_inode_flag(inode, FI_VOLATILE_FILE); 2163 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); 2164out: 2165 inode_unlock(inode); 2166 mnt_drop_write_file(filp); 2167 return ret; 2168} 2169 2170static int f2fs_ioc_release_volatile_write(struct file *filp) 2171{ 2172 struct inode *inode = file_inode(filp); 2173 int ret; 2174 2175 if (!inode_owner_or_capable(inode)) 2176 return -EACCES; 2177 2178 ret = mnt_want_write_file(filp); 2179 if (ret) 2180 return ret; 2181 2182 inode_lock(inode); 2183 2184 if (!f2fs_is_volatile_file(inode)) 2185 goto out; 2186 2187 if (!f2fs_is_first_block_written(inode)) { 2188 ret = truncate_partial_data_page(inode, 0, true); 2189 goto out; 2190 } 2191 2192 ret = punch_hole(inode, 0, F2FS_BLKSIZE); 2193out: 2194 inode_unlock(inode); 2195 mnt_drop_write_file(filp); 2196 return ret; 2197} 2198 2199static int f2fs_ioc_abort_volatile_write(struct file *filp) 2200{ 2201 struct inode *inode = file_inode(filp); 2202 int ret; 2203 2204 if (!inode_owner_or_capable(inode)) 2205 return -EACCES; 2206 2207 ret = mnt_want_write_file(filp); 2208 if (ret) 2209 return ret; 2210 2211 inode_lock(inode); 2212 2213 if (f2fs_is_atomic_file(inode)) 2214 f2fs_drop_inmem_pages(inode); 2215 if (f2fs_is_volatile_file(inode)) { 2216 clear_inode_flag(inode, FI_VOLATILE_FILE); 2217 stat_dec_volatile_write(inode); 2218 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); 2219 } 2220 2221 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST); 2222 2223 inode_unlock(inode); 2224 2225 mnt_drop_write_file(filp); 2226 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); 2227 return ret; 2228} 2229 2230static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) 2231{ 2232 struct inode *inode = file_inode(filp); 2233 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2234 struct super_block *sb = sbi->sb; 2235 __u32 in; 2236 int ret = 0; 2237 2238 if (!capable(CAP_SYS_ADMIN)) 2239 return -EPERM; 2240 2241 if (get_user(in, (__u32 __user *)arg)) 2242 return -EFAULT; 2243 2244 if (in != F2FS_GOING_DOWN_FULLSYNC) { 2245 ret = mnt_want_write_file(filp); 2246 if (ret) { 2247 if (ret == -EROFS) { 2248 ret = 0; 2249 f2fs_stop_checkpoint(sbi, false); 2250 set_sbi_flag(sbi, SBI_IS_SHUTDOWN); 2251 trace_f2fs_shutdown(sbi, in, ret); 2252 } 2253 return ret; 2254 } 2255 } 2256 2257 switch (in) { 2258 case F2FS_GOING_DOWN_FULLSYNC: 2259 sb = freeze_bdev(sb->s_bdev); 2260 if (IS_ERR(sb)) { 2261 ret = PTR_ERR(sb); 2262 goto out; 2263 } 2264 if (sb) { 2265 f2fs_stop_checkpoint(sbi, false); 2266 set_sbi_flag(sbi, SBI_IS_SHUTDOWN); 2267 thaw_bdev(sb->s_bdev, sb); 2268 } 2269 break; 2270 case F2FS_GOING_DOWN_METASYNC: 2271 /* do checkpoint only */ 2272 ret = f2fs_sync_fs(sb, 1); 2273 if (ret) 2274 goto out; 2275 f2fs_stop_checkpoint(sbi, false); 2276 set_sbi_flag(sbi, SBI_IS_SHUTDOWN); 2277 break; 2278 case F2FS_GOING_DOWN_NOSYNC: 2279 f2fs_stop_checkpoint(sbi, false); 2280 set_sbi_flag(sbi, SBI_IS_SHUTDOWN); 2281 break; 2282 case F2FS_GOING_DOWN_METAFLUSH: 2283 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO); 2284 f2fs_stop_checkpoint(sbi, false); 2285 set_sbi_flag(sbi, SBI_IS_SHUTDOWN); 2286 break; 2287 case F2FS_GOING_DOWN_NEED_FSCK: 2288 set_sbi_flag(sbi, SBI_NEED_FSCK); 2289 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 2290 set_sbi_flag(sbi, SBI_IS_DIRTY); 2291 /* do checkpoint only */ 2292 ret = f2fs_sync_fs(sb, 1); 2293 goto out; 2294 default: 2295 ret = -EINVAL; 2296 goto out; 2297 } 2298 2299 f2fs_stop_gc_thread(sbi); 2300 f2fs_stop_discard_thread(sbi); 2301 2302 f2fs_drop_discard_cmd(sbi); 2303 clear_opt(sbi, DISCARD); 2304 2305 f2fs_update_time(sbi, REQ_TIME); 2306out: 2307 if (in != F2FS_GOING_DOWN_FULLSYNC) 2308 mnt_drop_write_file(filp); 2309 2310 trace_f2fs_shutdown(sbi, in, ret); 2311 2312 return ret; 2313} 2314 2315static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) 2316{ 2317 struct inode *inode = file_inode(filp); 2318 struct super_block *sb = inode->i_sb; 2319 struct request_queue *q = bdev_get_queue(sb->s_bdev); 2320 struct fstrim_range range; 2321 int ret; 2322 2323 if (!capable(CAP_SYS_ADMIN)) 2324 return -EPERM; 2325 2326 if (!f2fs_hw_support_discard(F2FS_SB(sb))) 2327 return -EOPNOTSUPP; 2328 2329 if (copy_from_user(&range, (struct fstrim_range __user *)arg, 2330 sizeof(range))) 2331 return -EFAULT; 2332 2333 ret = mnt_want_write_file(filp); 2334 if (ret) 2335 return ret; 2336 2337 range.minlen = max((unsigned int)range.minlen, 2338 q->limits.discard_granularity); 2339 ret = f2fs_trim_fs(F2FS_SB(sb), &range); 2340 mnt_drop_write_file(filp); 2341 if (ret < 0) 2342 return ret; 2343 2344 if (copy_to_user((struct fstrim_range __user *)arg, &range, 2345 sizeof(range))) 2346 return -EFAULT; 2347 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); 2348 return 0; 2349} 2350 2351static bool uuid_is_nonzero(__u8 u[16]) 2352{ 2353 int i; 2354 2355 for (i = 0; i < 16; i++) 2356 if (u[i]) 2357 return true; 2358 return false; 2359} 2360 2361static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) 2362{ 2363 struct inode *inode = file_inode(filp); 2364 2365 if (!f2fs_sb_has_encrypt(F2FS_I_SB(inode))) 2366 return -EOPNOTSUPP; 2367 2368 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); 2369 2370 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); 2371} 2372 2373static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) 2374{ 2375 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp)))) 2376 return -EOPNOTSUPP; 2377 return fscrypt_ioctl_get_policy(filp, (void __user *)arg); 2378} 2379 2380static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) 2381{ 2382 struct inode *inode = file_inode(filp); 2383 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2384 int err; 2385 2386 if (!f2fs_sb_has_encrypt(sbi)) 2387 return -EOPNOTSUPP; 2388 2389 err = mnt_want_write_file(filp); 2390 if (err) 2391 return err; 2392 2393 down_write(&sbi->sb_lock); 2394 2395 if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) 2396 goto got_it; 2397 2398 /* update superblock with uuid */ 2399 generate_random_uuid(sbi->raw_super->encrypt_pw_salt); 2400 2401 err = f2fs_commit_super(sbi, false); 2402 if (err) { 2403 /* undo new data */ 2404 memset(sbi->raw_super->encrypt_pw_salt, 0, 16); 2405 goto out_err; 2406 } 2407got_it: 2408 if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, 2409 16)) 2410 err = -EFAULT; 2411out_err: 2412 up_write(&sbi->sb_lock); 2413 mnt_drop_write_file(filp); 2414 return err; 2415} 2416 2417static int f2fs_ioc_get_encryption_policy_ex(struct file *filp, 2418 unsigned long arg) 2419{ 2420 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp)))) 2421 return -EOPNOTSUPP; 2422 2423 return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg); 2424} 2425 2426static int f2fs_ioc_add_encryption_key(struct file *filp, unsigned long arg) 2427{ 2428 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp)))) 2429 return -EOPNOTSUPP; 2430 2431 return fscrypt_ioctl_add_key(filp, (void __user *)arg); 2432} 2433 2434static int f2fs_ioc_remove_encryption_key(struct file *filp, unsigned long arg) 2435{ 2436 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp)))) 2437 return -EOPNOTSUPP; 2438 2439 return fscrypt_ioctl_remove_key(filp, (void __user *)arg); 2440} 2441 2442static int f2fs_ioc_remove_encryption_key_all_users(struct file *filp, 2443 unsigned long arg) 2444{ 2445 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp)))) 2446 return -EOPNOTSUPP; 2447 2448 return fscrypt_ioctl_remove_key_all_users(filp, (void __user *)arg); 2449} 2450 2451static int f2fs_ioc_get_encryption_key_status(struct file *filp, 2452 unsigned long arg) 2453{ 2454 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp)))) 2455 return -EOPNOTSUPP; 2456 2457 return fscrypt_ioctl_get_key_status(filp, (void __user *)arg); 2458} 2459 2460static int f2fs_ioc_get_encryption_nonce(struct file *filp, unsigned long arg) 2461{ 2462 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp)))) 2463 return -EOPNOTSUPP; 2464 2465 return fscrypt_ioctl_get_nonce(filp, (void __user *)arg); 2466} 2467 2468static int f2fs_ioc_gc(struct file *filp, unsigned long arg) 2469{ 2470 struct inode *inode = file_inode(filp); 2471 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2472 __u32 sync; 2473 int ret; 2474 2475 if (!capable(CAP_SYS_ADMIN)) 2476 return -EPERM; 2477 2478 if (get_user(sync, (__u32 __user *)arg)) 2479 return -EFAULT; 2480 2481 if (f2fs_readonly(sbi->sb)) 2482 return -EROFS; 2483 2484 ret = mnt_want_write_file(filp); 2485 if (ret) 2486 return ret; 2487 2488 if (!sync) { 2489 if (!down_write_trylock(&sbi->gc_lock)) { 2490 ret = -EBUSY; 2491 goto out; 2492 } 2493 } else { 2494 down_write(&sbi->gc_lock); 2495 } 2496 2497 ret = f2fs_gc(sbi, sync, true, false, NULL_SEGNO); 2498out: 2499 mnt_drop_write_file(filp); 2500 return ret; 2501} 2502 2503static int __f2fs_ioc_gc_range(struct file *filp, struct f2fs_gc_range *range) 2504{ 2505 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp)); 2506 u64 end; 2507 int ret; 2508 2509 if (!capable(CAP_SYS_ADMIN)) 2510 return -EPERM; 2511 if (f2fs_readonly(sbi->sb)) 2512 return -EROFS; 2513 2514 end = range->start + range->len; 2515 if (end < range->start || range->start < MAIN_BLKADDR(sbi) || 2516 end >= MAX_BLKADDR(sbi)) 2517 return -EINVAL; 2518 2519 ret = mnt_want_write_file(filp); 2520 if (ret) 2521 return ret; 2522 2523do_more: 2524 if (!range->sync) { 2525 if (!down_write_trylock(&sbi->gc_lock)) { 2526 ret = -EBUSY; 2527 goto out; 2528 } 2529 } else { 2530 down_write(&sbi->gc_lock); 2531 } 2532 2533 ret = f2fs_gc(sbi, range->sync, true, false, 2534 GET_SEGNO(sbi, range->start)); 2535 if (ret) { 2536 if (ret == -EBUSY) 2537 ret = -EAGAIN; 2538 goto out; 2539 } 2540 range->start += BLKS_PER_SEC(sbi); 2541 if (range->start <= end) 2542 goto do_more; 2543out: 2544 mnt_drop_write_file(filp); 2545 return ret; 2546} 2547 2548static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg) 2549{ 2550 struct f2fs_gc_range range; 2551 2552 if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg, 2553 sizeof(range))) 2554 return -EFAULT; 2555 return __f2fs_ioc_gc_range(filp, &range); 2556} 2557 2558static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) 2559{ 2560 struct inode *inode = file_inode(filp); 2561 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2562 int ret; 2563 2564 if (!capable(CAP_SYS_ADMIN)) 2565 return -EPERM; 2566 2567 if (f2fs_readonly(sbi->sb)) 2568 return -EROFS; 2569 2570 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { 2571 f2fs_info(sbi, "Skipping Checkpoint. Checkpoints currently disabled."); 2572 return -EINVAL; 2573 } 2574 2575 ret = mnt_want_write_file(filp); 2576 if (ret) 2577 return ret; 2578 2579 ret = f2fs_sync_fs(sbi->sb, 1); 2580 2581 mnt_drop_write_file(filp); 2582 return ret; 2583} 2584 2585static int f2fs_defragment_range(struct f2fs_sb_info *sbi, 2586 struct file *filp, 2587 struct f2fs_defragment *range) 2588{ 2589 struct inode *inode = file_inode(filp); 2590 struct f2fs_map_blocks map = { .m_next_extent = NULL, 2591 .m_seg_type = NO_CHECK_TYPE , 2592 .m_may_create = false }; 2593 struct extent_info ei = {0, 0, 0}; 2594 pgoff_t pg_start, pg_end, next_pgofs; 2595 unsigned int blk_per_seg = sbi->blocks_per_seg; 2596 unsigned int total = 0, sec_num; 2597 block_t blk_end = 0; 2598 bool fragmented = false; 2599 int err; 2600 2601 /* if in-place-update policy is enabled, don't waste time here */ 2602 if (f2fs_should_update_inplace(inode, NULL)) 2603 return -EINVAL; 2604 2605 pg_start = range->start >> PAGE_SHIFT; 2606 pg_end = (range->start + range->len) >> PAGE_SHIFT; 2607 2608 f2fs_balance_fs(sbi, true); 2609 2610 inode_lock(inode); 2611 2612 /* writeback all dirty pages in the range */ 2613 err = filemap_write_and_wait_range(inode->i_mapping, range->start, 2614 range->start + range->len - 1); 2615 if (err) 2616 goto out; 2617 2618 /* 2619 * lookup mapping info in extent cache, skip defragmenting if physical 2620 * block addresses are continuous. 2621 */ 2622 if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) { 2623 if (ei.fofs + ei.len >= pg_end) 2624 goto out; 2625 } 2626 2627 map.m_lblk = pg_start; 2628 map.m_next_pgofs = &next_pgofs; 2629 2630 /* 2631 * lookup mapping info in dnode page cache, skip defragmenting if all 2632 * physical block addresses are continuous even if there are hole(s) 2633 * in logical blocks. 2634 */ 2635 while (map.m_lblk < pg_end) { 2636 map.m_len = pg_end - map.m_lblk; 2637 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); 2638 if (err) 2639 goto out; 2640 2641 if (!(map.m_flags & F2FS_MAP_FLAGS)) { 2642 map.m_lblk = next_pgofs; 2643 continue; 2644 } 2645 2646 if (blk_end && blk_end != map.m_pblk) 2647 fragmented = true; 2648 2649 /* record total count of block that we're going to move */ 2650 total += map.m_len; 2651 2652 blk_end = map.m_pblk + map.m_len; 2653 2654 map.m_lblk += map.m_len; 2655 } 2656 2657 if (!fragmented) { 2658 total = 0; 2659 goto out; 2660 } 2661 2662 sec_num = DIV_ROUND_UP(total, BLKS_PER_SEC(sbi)); 2663 2664 /* 2665 * make sure there are enough free section for LFS allocation, this can 2666 * avoid defragment running in SSR mode when free section are allocated 2667 * intensively 2668 */ 2669 if (has_not_enough_free_secs(sbi, 0, sec_num)) { 2670 err = -EAGAIN; 2671 goto out; 2672 } 2673 2674 map.m_lblk = pg_start; 2675 map.m_len = pg_end - pg_start; 2676 total = 0; 2677 2678 while (map.m_lblk < pg_end) { 2679 pgoff_t idx; 2680 int cnt = 0; 2681 2682do_map: 2683 map.m_len = pg_end - map.m_lblk; 2684 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); 2685 if (err) 2686 goto clear_out; 2687 2688 if (!(map.m_flags & F2FS_MAP_FLAGS)) { 2689 map.m_lblk = next_pgofs; 2690 goto check; 2691 } 2692 2693 set_inode_flag(inode, FI_DO_DEFRAG); 2694 2695 idx = map.m_lblk; 2696 while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { 2697 struct page *page; 2698 2699 page = f2fs_get_lock_data_page(inode, idx, true); 2700 if (IS_ERR(page)) { 2701 err = PTR_ERR(page); 2702 goto clear_out; 2703 } 2704 2705 set_page_dirty(page); 2706 f2fs_put_page(page, 1); 2707 2708 idx++; 2709 cnt++; 2710 total++; 2711 } 2712 2713 map.m_lblk = idx; 2714check: 2715 if (map.m_lblk < pg_end && cnt < blk_per_seg) 2716 goto do_map; 2717 2718 clear_inode_flag(inode, FI_DO_DEFRAG); 2719 2720 err = filemap_fdatawrite(inode->i_mapping); 2721 if (err) 2722 goto out; 2723 } 2724clear_out: 2725 clear_inode_flag(inode, FI_DO_DEFRAG); 2726out: 2727 inode_unlock(inode); 2728 if (!err) 2729 range->len = (u64)total << PAGE_SHIFT; 2730 return err; 2731} 2732 2733static int f2fs_ioc_defragment(struct file *filp, unsigned long arg) 2734{ 2735 struct inode *inode = file_inode(filp); 2736 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2737 struct f2fs_defragment range; 2738 int err; 2739 2740 if (!capable(CAP_SYS_ADMIN)) 2741 return -EPERM; 2742 2743 if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode)) 2744 return -EINVAL; 2745 2746 if (f2fs_readonly(sbi->sb)) 2747 return -EROFS; 2748 2749 if (copy_from_user(&range, (struct f2fs_defragment __user *)arg, 2750 sizeof(range))) 2751 return -EFAULT; 2752 2753 /* verify alignment of offset & size */ 2754 if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1)) 2755 return -EINVAL; 2756 2757 if (unlikely((range.start + range.len) >> PAGE_SHIFT > 2758 sbi->max_file_blocks)) 2759 return -EINVAL; 2760 2761 err = mnt_want_write_file(filp); 2762 if (err) 2763 return err; 2764 2765 err = f2fs_defragment_range(sbi, filp, &range); 2766 mnt_drop_write_file(filp); 2767 2768 f2fs_update_time(sbi, REQ_TIME); 2769 if (err < 0) 2770 return err; 2771 2772 if (copy_to_user((struct f2fs_defragment __user *)arg, &range, 2773 sizeof(range))) 2774 return -EFAULT; 2775 2776 return 0; 2777} 2778 2779static int f2fs_move_file_range(struct file *file_in, loff_t pos_in, 2780 struct file *file_out, loff_t pos_out, size_t len) 2781{ 2782 struct inode *src = file_inode(file_in); 2783 struct inode *dst = file_inode(file_out); 2784 struct f2fs_sb_info *sbi = F2FS_I_SB(src); 2785 size_t olen = len, dst_max_i_size = 0; 2786 size_t dst_osize; 2787 int ret; 2788 2789 if (file_in->f_path.mnt != file_out->f_path.mnt || 2790 src->i_sb != dst->i_sb) 2791 return -EXDEV; 2792 2793 if (unlikely(f2fs_readonly(src->i_sb))) 2794 return -EROFS; 2795 2796 if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode)) 2797 return -EINVAL; 2798 2799 if (IS_ENCRYPTED(src) || IS_ENCRYPTED(dst)) 2800 return -EOPNOTSUPP; 2801 2802 if (pos_out < 0 || pos_in < 0) 2803 return -EINVAL; 2804 2805 if (src == dst) { 2806 if (pos_in == pos_out) 2807 return 0; 2808 if (pos_out > pos_in && pos_out < pos_in + len) 2809 return -EINVAL; 2810 } 2811 2812 inode_lock(src); 2813 if (src != dst) { 2814 ret = -EBUSY; 2815 if (!inode_trylock(dst)) 2816 goto out; 2817 } 2818 2819 if (f2fs_compressed_file(src) || f2fs_compressed_file(dst)) { 2820 ret = -EOPNOTSUPP; 2821 goto out_unlock; 2822 } 2823 2824 ret = -EINVAL; 2825 if (pos_in + len > src->i_size || pos_in + len < pos_in) 2826 goto out_unlock; 2827 if (len == 0) 2828 olen = len = src->i_size - pos_in; 2829 if (pos_in + len == src->i_size) 2830 len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in; 2831 if (len == 0) { 2832 ret = 0; 2833 goto out_unlock; 2834 } 2835 2836 dst_osize = dst->i_size; 2837 if (pos_out + olen > dst->i_size) 2838 dst_max_i_size = pos_out + olen; 2839 2840 /* verify the end result is block aligned */ 2841 if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) || 2842 !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) || 2843 !IS_ALIGNED(pos_out, F2FS_BLKSIZE)) 2844 goto out_unlock; 2845 2846 ret = f2fs_convert_inline_inode(src); 2847 if (ret) 2848 goto out_unlock; 2849 2850 ret = f2fs_convert_inline_inode(dst); 2851 if (ret) 2852 goto out_unlock; 2853 2854 /* write out all dirty pages from offset */ 2855 ret = filemap_write_and_wait_range(src->i_mapping, 2856 pos_in, pos_in + len); 2857 if (ret) 2858 goto out_unlock; 2859 2860 ret = filemap_write_and_wait_range(dst->i_mapping, 2861 pos_out, pos_out + len); 2862 if (ret) 2863 goto out_unlock; 2864 2865 f2fs_balance_fs(sbi, true); 2866 2867 down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]); 2868 if (src != dst) { 2869 ret = -EBUSY; 2870 if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE])) 2871 goto out_src; 2872 } 2873 2874 f2fs_lock_op(sbi); 2875 ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS, 2876 pos_out >> F2FS_BLKSIZE_BITS, 2877 len >> F2FS_BLKSIZE_BITS, false); 2878 2879 if (!ret) { 2880 if (dst_max_i_size) 2881 f2fs_i_size_write(dst, dst_max_i_size); 2882 else if (dst_osize != dst->i_size) 2883 f2fs_i_size_write(dst, dst_osize); 2884 } 2885 f2fs_unlock_op(sbi); 2886 2887 if (src != dst) 2888 up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]); 2889out_src: 2890 up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]); 2891out_unlock: 2892 if (src != dst) 2893 inode_unlock(dst); 2894out: 2895 inode_unlock(src); 2896 return ret; 2897} 2898 2899static int __f2fs_ioc_move_range(struct file *filp, 2900 struct f2fs_move_range *range) 2901{ 2902 struct fd dst; 2903 int err; 2904 2905 if (!(filp->f_mode & FMODE_READ) || 2906 !(filp->f_mode & FMODE_WRITE)) 2907 return -EBADF; 2908 2909 dst = fdget(range->dst_fd); 2910 if (!dst.file) 2911 return -EBADF; 2912 2913 if (!(dst.file->f_mode & FMODE_WRITE)) { 2914 err = -EBADF; 2915 goto err_out; 2916 } 2917 2918 err = mnt_want_write_file(filp); 2919 if (err) 2920 goto err_out; 2921 2922 err = f2fs_move_file_range(filp, range->pos_in, dst.file, 2923 range->pos_out, range->len); 2924 2925 mnt_drop_write_file(filp); 2926err_out: 2927 fdput(dst); 2928 return err; 2929} 2930 2931static int f2fs_ioc_move_range(struct file *filp, unsigned long arg) 2932{ 2933 struct f2fs_move_range range; 2934 2935 if (copy_from_user(&range, (struct f2fs_move_range __user *)arg, 2936 sizeof(range))) 2937 return -EFAULT; 2938 return __f2fs_ioc_move_range(filp, &range); 2939} 2940 2941static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg) 2942{ 2943 struct inode *inode = file_inode(filp); 2944 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2945 struct sit_info *sm = SIT_I(sbi); 2946 unsigned int start_segno = 0, end_segno = 0; 2947 unsigned int dev_start_segno = 0, dev_end_segno = 0; 2948 struct f2fs_flush_device range; 2949 int ret; 2950 2951 if (!capable(CAP_SYS_ADMIN)) 2952 return -EPERM; 2953 2954 if (f2fs_readonly(sbi->sb)) 2955 return -EROFS; 2956 2957 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) 2958 return -EINVAL; 2959 2960 if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg, 2961 sizeof(range))) 2962 return -EFAULT; 2963 2964 if (!f2fs_is_multi_device(sbi) || sbi->s_ndevs - 1 <= range.dev_num || 2965 __is_large_section(sbi)) { 2966 f2fs_warn(sbi, "Can't flush %u in %d for segs_per_sec %u != 1", 2967 range.dev_num, sbi->s_ndevs, sbi->segs_per_sec); 2968 return -EINVAL; 2969 } 2970 2971 ret = mnt_want_write_file(filp); 2972 if (ret) 2973 return ret; 2974 2975 if (range.dev_num != 0) 2976 dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk); 2977 dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk); 2978 2979 start_segno = sm->last_victim[FLUSH_DEVICE]; 2980 if (start_segno < dev_start_segno || start_segno >= dev_end_segno) 2981 start_segno = dev_start_segno; 2982 end_segno = min(start_segno + range.segments, dev_end_segno); 2983 2984 while (start_segno < end_segno) { 2985 if (!down_write_trylock(&sbi->gc_lock)) { 2986 ret = -EBUSY; 2987 goto out; 2988 } 2989 sm->last_victim[GC_CB] = end_segno + 1; 2990 sm->last_victim[GC_GREEDY] = end_segno + 1; 2991 sm->last_victim[ALLOC_NEXT] = end_segno + 1; 2992 ret = f2fs_gc(sbi, true, true, true, start_segno); 2993 if (ret == -EAGAIN) 2994 ret = 0; 2995 else if (ret < 0) 2996 break; 2997 start_segno++; 2998 } 2999out: 3000 mnt_drop_write_file(filp); 3001 return ret; 3002} 3003 3004static int f2fs_ioc_get_features(struct file *filp, unsigned long arg) 3005{ 3006 struct inode *inode = file_inode(filp); 3007 u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature); 3008 3009 /* Must validate to set it with SQLite behavior in Android. */ 3010 sb_feature |= F2FS_FEATURE_ATOMIC_WRITE; 3011 3012 return put_user(sb_feature, (u32 __user *)arg); 3013} 3014 3015#ifdef CONFIG_QUOTA 3016int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid) 3017{ 3018 struct dquot *transfer_to[MAXQUOTAS] = {}; 3019 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 3020 struct super_block *sb = sbi->sb; 3021 int err; 3022 3023 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid)); 3024 if (IS_ERR(transfer_to[PRJQUOTA])) 3025 return PTR_ERR(transfer_to[PRJQUOTA]); 3026 3027 err = __dquot_transfer(inode, transfer_to); 3028 if (err) 3029 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 3030 dqput(transfer_to[PRJQUOTA]); 3031 return err; 3032} 3033 3034static int f2fs_ioc_setproject(struct file *filp, __u32 projid) 3035{ 3036 struct inode *inode = file_inode(filp); 3037 struct f2fs_inode_info *fi = F2FS_I(inode); 3038 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 3039 struct page *ipage; 3040 kprojid_t kprojid; 3041 int err; 3042 3043 if (!f2fs_sb_has_project_quota(sbi)) { 3044 if (projid != F2FS_DEF_PROJID) 3045 return -EOPNOTSUPP; 3046 else 3047 return 0; 3048 } 3049 3050 if (!f2fs_has_extra_attr(inode)) 3051 return -EOPNOTSUPP; 3052 3053 kprojid = make_kprojid(&init_user_ns, (projid_t)projid); 3054 3055 if (projid_eq(kprojid, F2FS_I(inode)->i_projid)) 3056 return 0; 3057 3058 err = -EPERM; 3059 /* Is it quota file? Do not allow user to mess with it */ 3060 if (IS_NOQUOTA(inode)) 3061 return err; 3062 3063 ipage = f2fs_get_node_page(sbi, inode->i_ino); 3064 if (IS_ERR(ipage)) 3065 return PTR_ERR(ipage); 3066 3067 if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize, 3068 i_projid)) { 3069 err = -EOVERFLOW; 3070 f2fs_put_page(ipage, 1); 3071 return err; 3072 } 3073 f2fs_put_page(ipage, 1); 3074 3075 err = dquot_initialize(inode); 3076 if (err) 3077 return err; 3078 3079 f2fs_lock_op(sbi); 3080 err = f2fs_transfer_project_quota(inode, kprojid); 3081 if (err) 3082 goto out_unlock; 3083 3084 F2FS_I(inode)->i_projid = kprojid; 3085 inode->i_ctime = current_time(inode); 3086 f2fs_mark_inode_dirty_sync(inode, true); 3087out_unlock: 3088 f2fs_unlock_op(sbi); 3089 return err; 3090} 3091#else 3092int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid) 3093{ 3094 return 0; 3095} 3096 3097static int f2fs_ioc_setproject(struct file *filp, __u32 projid) 3098{ 3099 if (projid != F2FS_DEF_PROJID) 3100 return -EOPNOTSUPP; 3101 return 0; 3102} 3103#endif 3104 3105/* FS_IOC_FSGETXATTR and FS_IOC_FSSETXATTR support */ 3106 3107/* 3108 * To make a new on-disk f2fs i_flag gettable via FS_IOC_FSGETXATTR and settable 3109 * via FS_IOC_FSSETXATTR, add an entry for it to f2fs_xflags_map[], and add its 3110 * FS_XFLAG_* equivalent to F2FS_SUPPORTED_XFLAGS. 3111 */ 3112 3113static const struct { 3114 u32 iflag; 3115 u32 xflag; 3116} f2fs_xflags_map[] = { 3117 { F2FS_SYNC_FL, FS_XFLAG_SYNC }, 3118 { F2FS_IMMUTABLE_FL, FS_XFLAG_IMMUTABLE }, 3119 { F2FS_APPEND_FL, FS_XFLAG_APPEND }, 3120 { F2FS_NODUMP_FL, FS_XFLAG_NODUMP }, 3121 { F2FS_NOATIME_FL, FS_XFLAG_NOATIME }, 3122 { F2FS_PROJINHERIT_FL, FS_XFLAG_PROJINHERIT }, 3123}; 3124 3125#define F2FS_SUPPORTED_XFLAGS ( \ 3126 FS_XFLAG_SYNC | \ 3127 FS_XFLAG_IMMUTABLE | \ 3128 FS_XFLAG_APPEND | \ 3129 FS_XFLAG_NODUMP | \ 3130 FS_XFLAG_NOATIME | \ 3131 FS_XFLAG_PROJINHERIT) 3132 3133/* Convert f2fs on-disk i_flags to FS_IOC_FS{GET,SET}XATTR flags */ 3134static inline u32 f2fs_iflags_to_xflags(u32 iflags) 3135{ 3136 u32 xflags = 0; 3137 int i; 3138 3139 for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++) 3140 if (iflags & f2fs_xflags_map[i].iflag) 3141 xflags |= f2fs_xflags_map[i].xflag; 3142 3143 return xflags; 3144} 3145 3146/* Convert FS_IOC_FS{GET,SET}XATTR flags to f2fs on-disk i_flags */ 3147static inline u32 f2fs_xflags_to_iflags(u32 xflags) 3148{ 3149 u32 iflags = 0; 3150 int i; 3151 3152 for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++) 3153 if (xflags & f2fs_xflags_map[i].xflag) 3154 iflags |= f2fs_xflags_map[i].iflag; 3155 3156 return iflags; 3157} 3158 3159static void f2fs_fill_fsxattr(struct inode *inode, struct fsxattr *fa) 3160{ 3161 struct f2fs_inode_info *fi = F2FS_I(inode); 3162 3163 simple_fill_fsxattr(fa, f2fs_iflags_to_xflags(fi->i_flags)); 3164 3165 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode))) 3166 fa->fsx_projid = from_kprojid(&init_user_ns, fi->i_projid); 3167} 3168 3169static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg) 3170{ 3171 struct inode *inode = file_inode(filp); 3172 struct fsxattr fa; 3173 3174 f2fs_fill_fsxattr(inode, &fa); 3175 3176 if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa))) 3177 return -EFAULT; 3178 return 0; 3179} 3180 3181static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg) 3182{ 3183 struct inode *inode = file_inode(filp); 3184 struct fsxattr fa, old_fa; 3185 u32 iflags; 3186 int err; 3187 3188 if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa))) 3189 return -EFAULT; 3190 3191 /* Make sure caller has proper permission */ 3192 if (!inode_owner_or_capable(inode)) 3193 return -EACCES; 3194 3195 if (fa.fsx_xflags & ~F2FS_SUPPORTED_XFLAGS) 3196 return -EOPNOTSUPP; 3197 3198 iflags = f2fs_xflags_to_iflags(fa.fsx_xflags); 3199 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags) 3200 return -EOPNOTSUPP; 3201 3202 err = mnt_want_write_file(filp); 3203 if (err) 3204 return err; 3205 3206 inode_lock(inode); 3207 3208 f2fs_fill_fsxattr(inode, &old_fa); 3209 err = vfs_ioc_fssetxattr_check(inode, &old_fa, &fa); 3210 if (err) 3211 goto out; 3212 3213 err = f2fs_setflags_common(inode, iflags, 3214 f2fs_xflags_to_iflags(F2FS_SUPPORTED_XFLAGS)); 3215 if (err) 3216 goto out; 3217 3218 err = f2fs_ioc_setproject(filp, fa.fsx_projid); 3219out: 3220 inode_unlock(inode); 3221 mnt_drop_write_file(filp); 3222 return err; 3223} 3224 3225int f2fs_pin_file_control(struct inode *inode, bool inc) 3226{ 3227 struct f2fs_inode_info *fi = F2FS_I(inode); 3228 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 3229 3230 /* Use i_gc_failures for normal file as a risk signal. */ 3231 if (inc) 3232 f2fs_i_gc_failures_write(inode, 3233 fi->i_gc_failures[GC_FAILURE_PIN] + 1); 3234 3235 if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) { 3236 f2fs_warn(sbi, "%s: Enable GC = ino %lx after %x GC trials", 3237 __func__, inode->i_ino, 3238 fi->i_gc_failures[GC_FAILURE_PIN]); 3239 clear_inode_flag(inode, FI_PIN_FILE); 3240 return -EAGAIN; 3241 } 3242 return 0; 3243} 3244 3245static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg) 3246{ 3247 struct inode *inode = file_inode(filp); 3248 __u32 pin; 3249 int ret = 0; 3250 3251 if (get_user(pin, (__u32 __user *)arg)) 3252 return -EFAULT; 3253 3254 if (!S_ISREG(inode->i_mode)) 3255 return -EINVAL; 3256 3257 if (f2fs_readonly(F2FS_I_SB(inode)->sb)) 3258 return -EROFS; 3259 3260 ret = mnt_want_write_file(filp); 3261 if (ret) 3262 return ret; 3263 3264 inode_lock(inode); 3265 3266 if (f2fs_should_update_outplace(inode, NULL)) { 3267 ret = -EINVAL; 3268 goto out; 3269 } 3270 3271 if (!pin) { 3272 clear_inode_flag(inode, FI_PIN_FILE); 3273 f2fs_i_gc_failures_write(inode, 0); 3274 goto done; 3275 } 3276 3277 if (f2fs_pin_file_control(inode, false)) { 3278 ret = -EAGAIN; 3279 goto out; 3280 } 3281 3282 ret = f2fs_convert_inline_inode(inode); 3283 if (ret) 3284 goto out; 3285 3286 if (!f2fs_disable_compressed_file(inode)) { 3287 ret = -EOPNOTSUPP; 3288 goto out; 3289 } 3290 3291 set_inode_flag(inode, FI_PIN_FILE); 3292 ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]; 3293done: 3294 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); 3295out: 3296 inode_unlock(inode); 3297 mnt_drop_write_file(filp); 3298 return ret; 3299} 3300 3301static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg) 3302{ 3303 struct inode *inode = file_inode(filp); 3304 __u32 pin = 0; 3305 3306 if (is_inode_flag_set(inode, FI_PIN_FILE)) 3307 pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]; 3308 return put_user(pin, (u32 __user *)arg); 3309} 3310 3311int f2fs_precache_extents(struct inode *inode) 3312{ 3313 struct f2fs_inode_info *fi = F2FS_I(inode); 3314 struct f2fs_map_blocks map; 3315 pgoff_t m_next_extent; 3316 loff_t end; 3317 int err; 3318 3319 if (is_inode_flag_set(inode, FI_NO_EXTENT)) 3320 return -EOPNOTSUPP; 3321 3322 map.m_lblk = 0; 3323 map.m_pblk = 0; 3324 map.m_next_pgofs = NULL; 3325 map.m_next_extent = &m_next_extent; 3326 map.m_seg_type = NO_CHECK_TYPE; 3327 map.m_may_create = false; 3328 end = F2FS_I_SB(inode)->max_file_blocks; 3329 3330 while (map.m_lblk < end) { 3331 map.m_len = end - map.m_lblk; 3332 3333 down_write(&fi->i_gc_rwsem[WRITE]); 3334 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE); 3335 up_write(&fi->i_gc_rwsem[WRITE]); 3336 if (err) 3337 return err; 3338 3339 map.m_lblk = m_next_extent; 3340 } 3341 3342 return err; 3343} 3344 3345static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg) 3346{ 3347 return f2fs_precache_extents(file_inode(filp)); 3348} 3349 3350static int f2fs_ioc_resize_fs(struct file *filp, unsigned long arg) 3351{ 3352 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp)); 3353 __u64 block_count; 3354 3355 if (!capable(CAP_SYS_ADMIN)) 3356 return -EPERM; 3357 3358 if (f2fs_readonly(sbi->sb)) 3359 return -EROFS; 3360 3361 if (copy_from_user(&block_count, (void __user *)arg, 3362 sizeof(block_count))) 3363 return -EFAULT; 3364 3365 return f2fs_resize_fs(filp, block_count); 3366} 3367 3368static inline int f2fs_has_feature_verity(struct file *filp) 3369{ 3370 struct inode *inode = file_inode(filp); 3371 3372 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); 3373 3374 if (!f2fs_sb_has_verity(F2FS_I_SB(inode))) { 3375 f2fs_warn(F2FS_I_SB(inode), 3376 "Can't enable fs-verity on inode %lu: the verity feature is not enabled on this filesystem.\n", 3377 inode->i_ino); 3378 return -EOPNOTSUPP; 3379 } 3380 return 0; 3381} 3382 3383static int f2fs_ioc_enable_verity(struct file *filp, unsigned long arg) 3384{ 3385 int err = f2fs_has_feature_verity(filp); 3386 3387 if (err) 3388 return err; 3389 3390 return fsverity_ioctl_enable(filp, (const void __user *)arg); 3391} 3392 3393static int f2fs_ioc_enable_code_sign(struct file *filp, unsigned long arg) 3394{ 3395 int err = f2fs_has_feature_verity(filp); 3396 3397 if (err) 3398 return err; 3399 3400 return fsverity_ioctl_enable_code_sign(filp, (const void __user *)arg); 3401} 3402 3403static int f2fs_ioc_measure_verity(struct file *filp, unsigned long arg) 3404{ 3405 if (!f2fs_sb_has_verity(F2FS_I_SB(file_inode(filp)))) 3406 return -EOPNOTSUPP; 3407 3408 return fsverity_ioctl_measure(filp, (void __user *)arg); 3409} 3410 3411static int f2fs_ioc_getfslabel(struct file *filp, unsigned long arg) 3412{ 3413 struct inode *inode = file_inode(filp); 3414 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 3415 char *vbuf; 3416 int count; 3417 int err = 0; 3418 3419 vbuf = f2fs_kzalloc(sbi, MAX_VOLUME_NAME, GFP_KERNEL); 3420 if (!vbuf) 3421 return -ENOMEM; 3422 3423 down_read(&sbi->sb_lock); 3424 count = utf16s_to_utf8s(sbi->raw_super->volume_name, 3425 ARRAY_SIZE(sbi->raw_super->volume_name), 3426 UTF16_LITTLE_ENDIAN, vbuf, MAX_VOLUME_NAME); 3427 up_read(&sbi->sb_lock); 3428 3429 if (copy_to_user((char __user *)arg, vbuf, 3430 min(FSLABEL_MAX, count))) 3431 err = -EFAULT; 3432 3433 kfree(vbuf); 3434 return err; 3435} 3436 3437static int f2fs_ioc_setfslabel(struct file *filp, unsigned long arg) 3438{ 3439 struct inode *inode = file_inode(filp); 3440 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 3441 char *vbuf; 3442 int err = 0; 3443 3444 if (!capable(CAP_SYS_ADMIN)) 3445 return -EPERM; 3446 3447 vbuf = strndup_user((const char __user *)arg, FSLABEL_MAX); 3448 if (IS_ERR(vbuf)) 3449 return PTR_ERR(vbuf); 3450 3451 err = mnt_want_write_file(filp); 3452 if (err) 3453 goto out; 3454 3455 down_write(&sbi->sb_lock); 3456 3457 memset(sbi->raw_super->volume_name, 0, 3458 sizeof(sbi->raw_super->volume_name)); 3459 utf8s_to_utf16s(vbuf, strlen(vbuf), UTF16_LITTLE_ENDIAN, 3460 sbi->raw_super->volume_name, 3461 ARRAY_SIZE(sbi->raw_super->volume_name)); 3462 3463 err = f2fs_commit_super(sbi, false); 3464 3465 up_write(&sbi->sb_lock); 3466 3467 mnt_drop_write_file(filp); 3468out: 3469 kfree(vbuf); 3470 return err; 3471} 3472 3473static int f2fs_get_compress_blocks(struct file *filp, unsigned long arg) 3474{ 3475 struct inode *inode = file_inode(filp); 3476 __u64 blocks; 3477 3478 if (!f2fs_sb_has_compression(F2FS_I_SB(inode))) 3479 return -EOPNOTSUPP; 3480 3481 if (!f2fs_compressed_file(inode)) 3482 return -EINVAL; 3483 3484 blocks = atomic_read(&F2FS_I(inode)->i_compr_blocks); 3485 return put_user(blocks, (u64 __user *)arg); 3486} 3487 3488static int release_compress_blocks(struct dnode_of_data *dn, pgoff_t count) 3489{ 3490 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 3491 unsigned int released_blocks = 0; 3492 int cluster_size = F2FS_I(dn->inode)->i_cluster_size; 3493 block_t blkaddr; 3494 int i; 3495 3496 for (i = 0; i < count; i++) { 3497 blkaddr = data_blkaddr(dn->inode, dn->node_page, 3498 dn->ofs_in_node + i); 3499 3500 if (!__is_valid_data_blkaddr(blkaddr)) 3501 continue; 3502 if (unlikely(!f2fs_is_valid_blkaddr(sbi, blkaddr, 3503 DATA_GENERIC_ENHANCE))) 3504 return -EFSCORRUPTED; 3505 } 3506 3507 while (count) { 3508 int compr_blocks = 0; 3509 3510 for (i = 0; i < cluster_size; i++, dn->ofs_in_node++) { 3511 blkaddr = f2fs_data_blkaddr(dn); 3512 3513 if (i == 0) { 3514 if (blkaddr == COMPRESS_ADDR) 3515 continue; 3516 dn->ofs_in_node += cluster_size; 3517 goto next; 3518 } 3519 3520 if (__is_valid_data_blkaddr(blkaddr)) 3521 compr_blocks++; 3522 3523 if (blkaddr != NEW_ADDR) 3524 continue; 3525 3526 dn->data_blkaddr = NULL_ADDR; 3527 f2fs_set_data_blkaddr(dn); 3528 } 3529 3530 f2fs_i_compr_blocks_update(dn->inode, compr_blocks, false); 3531 dec_valid_block_count(sbi, dn->inode, 3532 cluster_size - compr_blocks); 3533 3534 released_blocks += cluster_size - compr_blocks; 3535next: 3536 count -= cluster_size; 3537 } 3538 3539 return released_blocks; 3540} 3541 3542static int f2fs_release_compress_blocks(struct file *filp, unsigned long arg) 3543{ 3544 struct inode *inode = file_inode(filp); 3545 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 3546 pgoff_t page_idx = 0, last_idx; 3547 unsigned int released_blocks = 0; 3548 int ret; 3549 int writecount; 3550 3551 if (!f2fs_sb_has_compression(F2FS_I_SB(inode))) 3552 return -EOPNOTSUPP; 3553 3554 if (!f2fs_compressed_file(inode)) 3555 return -EINVAL; 3556 3557 if (f2fs_readonly(sbi->sb)) 3558 return -EROFS; 3559 3560 ret = mnt_want_write_file(filp); 3561 if (ret) 3562 return ret; 3563 3564 f2fs_balance_fs(F2FS_I_SB(inode), true); 3565 3566 inode_lock(inode); 3567 3568 writecount = atomic_read(&inode->i_writecount); 3569 if ((filp->f_mode & FMODE_WRITE && writecount != 1) || 3570 (!(filp->f_mode & FMODE_WRITE) && writecount)) { 3571 ret = -EBUSY; 3572 goto out; 3573 } 3574 3575 if (IS_IMMUTABLE(inode)) { 3576 ret = -EINVAL; 3577 goto out; 3578 } 3579 3580 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); 3581 if (ret) 3582 goto out; 3583 3584 F2FS_I(inode)->i_flags |= F2FS_IMMUTABLE_FL; 3585 f2fs_set_inode_flags(inode); 3586 inode->i_ctime = current_time(inode); 3587 f2fs_mark_inode_dirty_sync(inode, true); 3588 3589 if (!atomic_read(&F2FS_I(inode)->i_compr_blocks)) 3590 goto out; 3591 3592 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); 3593 down_write(&F2FS_I(inode)->i_mmap_sem); 3594 3595 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE); 3596 3597 while (page_idx < last_idx) { 3598 struct dnode_of_data dn; 3599 pgoff_t end_offset, count; 3600 3601 f2fs_lock_op(sbi); 3602 3603 set_new_dnode(&dn, inode, NULL, NULL, 0); 3604 ret = f2fs_get_dnode_of_data(&dn, page_idx, LOOKUP_NODE); 3605 if (ret) { 3606 f2fs_unlock_op(sbi); 3607 if (ret == -ENOENT) { 3608 page_idx = f2fs_get_next_page_offset(&dn, 3609 page_idx); 3610 ret = 0; 3611 continue; 3612 } 3613 break; 3614 } 3615 3616 end_offset = ADDRS_PER_PAGE(dn.node_page, inode); 3617 count = min(end_offset - dn.ofs_in_node, last_idx - page_idx); 3618 count = round_up(count, F2FS_I(inode)->i_cluster_size); 3619 3620 ret = release_compress_blocks(&dn, count); 3621 3622 f2fs_put_dnode(&dn); 3623 3624 f2fs_unlock_op(sbi); 3625 3626 if (ret < 0) 3627 break; 3628 3629 page_idx += count; 3630 released_blocks += ret; 3631 } 3632 3633 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); 3634 up_write(&F2FS_I(inode)->i_mmap_sem); 3635out: 3636 inode_unlock(inode); 3637 3638 mnt_drop_write_file(filp); 3639 3640 if (ret >= 0) { 3641 ret = put_user(released_blocks, (u64 __user *)arg); 3642 } else if (released_blocks && 3643 atomic_read(&F2FS_I(inode)->i_compr_blocks)) { 3644 set_sbi_flag(sbi, SBI_NEED_FSCK); 3645 f2fs_warn(sbi, "%s: partial blocks were released i_ino=%lx " 3646 "iblocks=%llu, released=%u, compr_blocks=%u, " 3647 "run fsck to fix.", 3648 __func__, inode->i_ino, inode->i_blocks, 3649 released_blocks, 3650 atomic_read(&F2FS_I(inode)->i_compr_blocks)); 3651 } 3652 3653 return ret; 3654} 3655 3656static int reserve_compress_blocks(struct dnode_of_data *dn, pgoff_t count, 3657 unsigned int *reserved_blocks) 3658{ 3659 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); 3660 int cluster_size = F2FS_I(dn->inode)->i_cluster_size; 3661 block_t blkaddr; 3662 int i; 3663 3664 for (i = 0; i < count; i++) { 3665 blkaddr = data_blkaddr(dn->inode, dn->node_page, 3666 dn->ofs_in_node + i); 3667 3668 if (!__is_valid_data_blkaddr(blkaddr)) 3669 continue; 3670 if (unlikely(!f2fs_is_valid_blkaddr(sbi, blkaddr, 3671 DATA_GENERIC_ENHANCE))) 3672 return -EFSCORRUPTED; 3673 } 3674 3675 while (count) { 3676 int compr_blocks = 0; 3677 blkcnt_t reserved; 3678 int ret; 3679 3680 for (i = 0; i < cluster_size; i++, dn->ofs_in_node++) { 3681 blkaddr = f2fs_data_blkaddr(dn); 3682 3683 if (i == 0) { 3684 if (blkaddr == COMPRESS_ADDR) 3685 continue; 3686 dn->ofs_in_node += cluster_size; 3687 goto next; 3688 } 3689 3690 if (__is_valid_data_blkaddr(blkaddr)) { 3691 compr_blocks++; 3692 continue; 3693 } 3694 3695 dn->data_blkaddr = NEW_ADDR; 3696 f2fs_set_data_blkaddr(dn); 3697 } 3698 3699 reserved = cluster_size - compr_blocks; 3700 ret = inc_valid_block_count(sbi, dn->inode, &reserved); 3701 if (ret) 3702 return ret; 3703 3704 if (reserved != cluster_size - compr_blocks) 3705 return -ENOSPC; 3706 3707 f2fs_i_compr_blocks_update(dn->inode, compr_blocks, true); 3708 3709 *reserved_blocks += reserved; 3710next: 3711 count -= cluster_size; 3712 } 3713 3714 return 0; 3715} 3716 3717static int f2fs_reserve_compress_blocks(struct file *filp, unsigned long arg) 3718{ 3719 struct inode *inode = file_inode(filp); 3720 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 3721 pgoff_t page_idx = 0, last_idx; 3722 unsigned int reserved_blocks = 0; 3723 int ret; 3724 3725 if (!f2fs_sb_has_compression(F2FS_I_SB(inode))) 3726 return -EOPNOTSUPP; 3727 3728 if (!f2fs_compressed_file(inode)) 3729 return -EINVAL; 3730 3731 if (f2fs_readonly(sbi->sb)) 3732 return -EROFS; 3733 3734 ret = mnt_want_write_file(filp); 3735 if (ret) 3736 return ret; 3737 3738 if (atomic_read(&F2FS_I(inode)->i_compr_blocks)) 3739 goto out; 3740 3741 f2fs_balance_fs(F2FS_I_SB(inode), true); 3742 3743 inode_lock(inode); 3744 3745 if (!IS_IMMUTABLE(inode)) { 3746 ret = -EINVAL; 3747 goto unlock_inode; 3748 } 3749 3750 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); 3751 down_write(&F2FS_I(inode)->i_mmap_sem); 3752 3753 last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE); 3754 3755 while (page_idx < last_idx) { 3756 struct dnode_of_data dn; 3757 pgoff_t end_offset, count; 3758 3759 f2fs_lock_op(sbi); 3760 3761 set_new_dnode(&dn, inode, NULL, NULL, 0); 3762 ret = f2fs_get_dnode_of_data(&dn, page_idx, LOOKUP_NODE); 3763 if (ret) { 3764 f2fs_unlock_op(sbi); 3765 if (ret == -ENOENT) { 3766 page_idx = f2fs_get_next_page_offset(&dn, 3767 page_idx); 3768 ret = 0; 3769 continue; 3770 } 3771 break; 3772 } 3773 3774 end_offset = ADDRS_PER_PAGE(dn.node_page, inode); 3775 count = min(end_offset - dn.ofs_in_node, last_idx - page_idx); 3776 count = round_up(count, F2FS_I(inode)->i_cluster_size); 3777 3778 ret = reserve_compress_blocks(&dn, count, &reserved_blocks); 3779 3780 f2fs_put_dnode(&dn); 3781 3782 f2fs_unlock_op(sbi); 3783 3784 if (ret < 0) 3785 break; 3786 3787 page_idx += count; 3788 } 3789 3790 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); 3791 up_write(&F2FS_I(inode)->i_mmap_sem); 3792 3793 if (ret >= 0) { 3794 F2FS_I(inode)->i_flags &= ~F2FS_IMMUTABLE_FL; 3795 f2fs_set_inode_flags(inode); 3796 inode->i_ctime = current_time(inode); 3797 f2fs_mark_inode_dirty_sync(inode, true); 3798 } 3799unlock_inode: 3800 inode_unlock(inode); 3801out: 3802 mnt_drop_write_file(filp); 3803 3804 if (!ret) { 3805 ret = put_user(reserved_blocks, (u64 __user *)arg); 3806 } else if (reserved_blocks && 3807 atomic_read(&F2FS_I(inode)->i_compr_blocks)) { 3808 set_sbi_flag(sbi, SBI_NEED_FSCK); 3809 f2fs_warn(sbi, "%s: partial blocks were released i_ino=%lx " 3810 "iblocks=%llu, reserved=%u, compr_blocks=%u, " 3811 "run fsck to fix.", 3812 __func__, inode->i_ino, inode->i_blocks, 3813 reserved_blocks, 3814 atomic_read(&F2FS_I(inode)->i_compr_blocks)); 3815 } 3816 3817 return ret; 3818} 3819 3820static int f2fs_secure_erase(struct block_device *bdev, struct inode *inode, 3821 pgoff_t off, block_t block, block_t len, u32 flags) 3822{ 3823 struct request_queue *q = bdev_get_queue(bdev); 3824 sector_t sector = SECTOR_FROM_BLOCK(block); 3825 sector_t nr_sects = SECTOR_FROM_BLOCK(len); 3826 int ret = 0; 3827 3828 if (!q) 3829 return -ENXIO; 3830 3831 if (flags & F2FS_TRIM_FILE_DISCARD) 3832 ret = blkdev_issue_discard(bdev, sector, nr_sects, GFP_NOFS, 3833 blk_queue_secure_erase(q) ? 3834 BLKDEV_DISCARD_SECURE : 0); 3835 3836 if (!ret && (flags & F2FS_TRIM_FILE_ZEROOUT)) { 3837 if (IS_ENCRYPTED(inode)) 3838 ret = fscrypt_zeroout_range(inode, off, block, len); 3839 else 3840 ret = blkdev_issue_zeroout(bdev, sector, nr_sects, 3841 GFP_NOFS, 0); 3842 } 3843 3844 return ret; 3845} 3846 3847static int f2fs_sec_trim_file(struct file *filp, unsigned long arg) 3848{ 3849 struct inode *inode = file_inode(filp); 3850 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 3851 struct address_space *mapping = inode->i_mapping; 3852 struct block_device *prev_bdev = NULL; 3853 struct f2fs_sectrim_range range; 3854 pgoff_t index, pg_end, prev_index = 0; 3855 block_t prev_block = 0, len = 0; 3856 loff_t end_addr; 3857 bool to_end = false; 3858 int ret = 0; 3859 3860 if (!(filp->f_mode & FMODE_WRITE)) 3861 return -EBADF; 3862 3863 if (copy_from_user(&range, (struct f2fs_sectrim_range __user *)arg, 3864 sizeof(range))) 3865 return -EFAULT; 3866 3867 if (range.flags == 0 || (range.flags & ~F2FS_TRIM_FILE_MASK) || 3868 !S_ISREG(inode->i_mode)) 3869 return -EINVAL; 3870 3871 if (((range.flags & F2FS_TRIM_FILE_DISCARD) && 3872 !f2fs_hw_support_discard(sbi)) || 3873 ((range.flags & F2FS_TRIM_FILE_ZEROOUT) && 3874 IS_ENCRYPTED(inode) && f2fs_is_multi_device(sbi))) 3875 return -EOPNOTSUPP; 3876 3877 file_start_write(filp); 3878 inode_lock(inode); 3879 3880 if (f2fs_is_atomic_file(inode) || f2fs_compressed_file(inode) || 3881 range.start >= inode->i_size) { 3882 ret = -EINVAL; 3883 goto err; 3884 } 3885 3886 if (range.len == 0) 3887 goto err; 3888 3889 if (inode->i_size - range.start > range.len) { 3890 end_addr = range.start + range.len; 3891 } else { 3892 end_addr = range.len == (u64)-1 ? 3893 sbi->sb->s_maxbytes : inode->i_size; 3894 to_end = true; 3895 } 3896 3897 if (!IS_ALIGNED(range.start, F2FS_BLKSIZE) || 3898 (!to_end && !IS_ALIGNED(end_addr, F2FS_BLKSIZE))) { 3899 ret = -EINVAL; 3900 goto err; 3901 } 3902 3903 index = F2FS_BYTES_TO_BLK(range.start); 3904 pg_end = DIV_ROUND_UP(end_addr, F2FS_BLKSIZE); 3905 3906 ret = f2fs_convert_inline_inode(inode); 3907 if (ret) 3908 goto err; 3909 3910 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); 3911 down_write(&F2FS_I(inode)->i_mmap_sem); 3912 3913 ret = filemap_write_and_wait_range(mapping, range.start, 3914 to_end ? LLONG_MAX : end_addr - 1); 3915 if (ret) 3916 goto out; 3917 3918 truncate_inode_pages_range(mapping, range.start, 3919 to_end ? -1 : end_addr - 1); 3920 3921 while (index < pg_end) { 3922 struct dnode_of_data dn; 3923 pgoff_t end_offset, count; 3924 int i; 3925 3926 set_new_dnode(&dn, inode, NULL, NULL, 0); 3927 ret = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); 3928 if (ret) { 3929 if (ret == -ENOENT) { 3930 index = f2fs_get_next_page_offset(&dn, index); 3931 continue; 3932 } 3933 goto out; 3934 } 3935 3936 end_offset = ADDRS_PER_PAGE(dn.node_page, inode); 3937 count = min(end_offset - dn.ofs_in_node, pg_end - index); 3938 for (i = 0; i < count; i++, index++, dn.ofs_in_node++) { 3939 struct block_device *cur_bdev; 3940 block_t blkaddr = f2fs_data_blkaddr(&dn); 3941 3942 if (!__is_valid_data_blkaddr(blkaddr)) 3943 continue; 3944 3945 if (!f2fs_is_valid_blkaddr(sbi, blkaddr, 3946 DATA_GENERIC_ENHANCE)) { 3947 ret = -EFSCORRUPTED; 3948 f2fs_put_dnode(&dn); 3949 goto out; 3950 } 3951 3952 cur_bdev = f2fs_target_device(sbi, blkaddr, NULL); 3953 if (f2fs_is_multi_device(sbi)) { 3954 int di = f2fs_target_device_index(sbi, blkaddr); 3955 3956 blkaddr -= FDEV(di).start_blk; 3957 } 3958 3959 if (len) { 3960 if (prev_bdev == cur_bdev && 3961 index == prev_index + len && 3962 blkaddr == prev_block + len) { 3963 len++; 3964 } else { 3965 ret = f2fs_secure_erase(prev_bdev, 3966 inode, prev_index, prev_block, 3967 len, range.flags); 3968 if (ret) { 3969 f2fs_put_dnode(&dn); 3970 goto out; 3971 } 3972 3973 len = 0; 3974 } 3975 } 3976 3977 if (!len) { 3978 prev_bdev = cur_bdev; 3979 prev_index = index; 3980 prev_block = blkaddr; 3981 len = 1; 3982 } 3983 } 3984 3985 f2fs_put_dnode(&dn); 3986 3987 if (fatal_signal_pending(current)) { 3988 ret = -EINTR; 3989 goto out; 3990 } 3991 cond_resched(); 3992 } 3993 3994 if (len) 3995 ret = f2fs_secure_erase(prev_bdev, inode, prev_index, 3996 prev_block, len, range.flags); 3997out: 3998 up_write(&F2FS_I(inode)->i_mmap_sem); 3999 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); 4000err: 4001 inode_unlock(inode); 4002 file_end_write(filp); 4003 4004 return ret; 4005} 4006 4007static long __f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 4008{ 4009 switch (cmd) { 4010 case FS_IOC_GETFLAGS: 4011 return f2fs_ioc_getflags(filp, arg); 4012 case FS_IOC_SETFLAGS: 4013 return f2fs_ioc_setflags(filp, arg); 4014 case FS_IOC_GETVERSION: 4015 return f2fs_ioc_getversion(filp, arg); 4016 case F2FS_IOC_START_ATOMIC_WRITE: 4017 return f2fs_ioc_start_atomic_write(filp); 4018 case F2FS_IOC_COMMIT_ATOMIC_WRITE: 4019 return f2fs_ioc_commit_atomic_write(filp); 4020 case F2FS_IOC_START_VOLATILE_WRITE: 4021 return f2fs_ioc_start_volatile_write(filp); 4022 case F2FS_IOC_RELEASE_VOLATILE_WRITE: 4023 return f2fs_ioc_release_volatile_write(filp); 4024 case F2FS_IOC_ABORT_VOLATILE_WRITE: 4025 return f2fs_ioc_abort_volatile_write(filp); 4026 case F2FS_IOC_SHUTDOWN: 4027 return f2fs_ioc_shutdown(filp, arg); 4028 case FITRIM: 4029 return f2fs_ioc_fitrim(filp, arg); 4030 case FS_IOC_SET_ENCRYPTION_POLICY: 4031 return f2fs_ioc_set_encryption_policy(filp, arg); 4032 case FS_IOC_GET_ENCRYPTION_POLICY: 4033 return f2fs_ioc_get_encryption_policy(filp, arg); 4034 case FS_IOC_GET_ENCRYPTION_PWSALT: 4035 return f2fs_ioc_get_encryption_pwsalt(filp, arg); 4036 case FS_IOC_GET_ENCRYPTION_POLICY_EX: 4037 return f2fs_ioc_get_encryption_policy_ex(filp, arg); 4038 case FS_IOC_ADD_ENCRYPTION_KEY: 4039 return f2fs_ioc_add_encryption_key(filp, arg); 4040 case FS_IOC_REMOVE_ENCRYPTION_KEY: 4041 return f2fs_ioc_remove_encryption_key(filp, arg); 4042 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS: 4043 return f2fs_ioc_remove_encryption_key_all_users(filp, arg); 4044 case FS_IOC_GET_ENCRYPTION_KEY_STATUS: 4045 return f2fs_ioc_get_encryption_key_status(filp, arg); 4046 case FS_IOC_GET_ENCRYPTION_NONCE: 4047 return f2fs_ioc_get_encryption_nonce(filp, arg); 4048 case F2FS_IOC_GARBAGE_COLLECT: 4049 return f2fs_ioc_gc(filp, arg); 4050 case F2FS_IOC_GARBAGE_COLLECT_RANGE: 4051 return f2fs_ioc_gc_range(filp, arg); 4052 case F2FS_IOC_WRITE_CHECKPOINT: 4053 return f2fs_ioc_write_checkpoint(filp, arg); 4054 case F2FS_IOC_DEFRAGMENT: 4055 return f2fs_ioc_defragment(filp, arg); 4056 case F2FS_IOC_MOVE_RANGE: 4057 return f2fs_ioc_move_range(filp, arg); 4058 case F2FS_IOC_FLUSH_DEVICE: 4059 return f2fs_ioc_flush_device(filp, arg); 4060 case F2FS_IOC_GET_FEATURES: 4061 return f2fs_ioc_get_features(filp, arg); 4062 case FS_IOC_FSGETXATTR: 4063 return f2fs_ioc_fsgetxattr(filp, arg); 4064 case FS_IOC_FSSETXATTR: 4065 return f2fs_ioc_fssetxattr(filp, arg); 4066 case F2FS_IOC_GET_PIN_FILE: 4067 return f2fs_ioc_get_pin_file(filp, arg); 4068 case F2FS_IOC_SET_PIN_FILE: 4069 return f2fs_ioc_set_pin_file(filp, arg); 4070 case F2FS_IOC_PRECACHE_EXTENTS: 4071 return f2fs_ioc_precache_extents(filp, arg); 4072 case F2FS_IOC_RESIZE_FS: 4073 return f2fs_ioc_resize_fs(filp, arg); 4074 case FS_IOC_ENABLE_VERITY: 4075 return f2fs_ioc_enable_verity(filp, arg); 4076 case FS_IOC_MEASURE_VERITY: 4077 return f2fs_ioc_measure_verity(filp, arg); 4078 case FS_IOC_ENABLE_CODE_SIGN: 4079 return f2fs_ioc_enable_code_sign(filp, arg); 4080 case FS_IOC_GETFSLABEL: 4081 return f2fs_ioc_getfslabel(filp, arg); 4082 case FS_IOC_SETFSLABEL: 4083 return f2fs_ioc_setfslabel(filp, arg); 4084 case F2FS_IOC_GET_COMPRESS_BLOCKS: 4085 return f2fs_get_compress_blocks(filp, arg); 4086 case F2FS_IOC_RELEASE_COMPRESS_BLOCKS: 4087 return f2fs_release_compress_blocks(filp, arg); 4088 case F2FS_IOC_RESERVE_COMPRESS_BLOCKS: 4089 return f2fs_reserve_compress_blocks(filp, arg); 4090 case F2FS_IOC_SEC_TRIM_FILE: 4091 return f2fs_sec_trim_file(filp, arg); 4092 default: 4093 return -ENOTTY; 4094 } 4095} 4096 4097long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 4098{ 4099 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp))))) 4100 return -EIO; 4101 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(filp)))) 4102 return -ENOSPC; 4103 4104 return __f2fs_ioctl(filp, cmd, arg); 4105} 4106 4107static ssize_t f2fs_file_read_iter(struct kiocb *iocb, struct iov_iter *iter) 4108{ 4109 struct file *file = iocb->ki_filp; 4110 struct inode *inode = file_inode(file); 4111 int ret; 4112 4113 if (!f2fs_is_compress_backend_ready(inode)) 4114 return -EOPNOTSUPP; 4115 4116 ret = generic_file_read_iter(iocb, iter); 4117 4118 if (ret > 0) 4119 f2fs_update_iostat(F2FS_I_SB(inode), APP_READ_IO, ret); 4120 4121 return ret; 4122} 4123 4124static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) 4125{ 4126 struct file *file = iocb->ki_filp; 4127 struct inode *inode = file_inode(file); 4128 ssize_t ret; 4129 4130 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) { 4131 ret = -EIO; 4132 goto out; 4133 } 4134 4135 if (!f2fs_is_compress_backend_ready(inode)) { 4136 ret = -EOPNOTSUPP; 4137 goto out; 4138 } 4139 4140 if (iocb->ki_flags & IOCB_NOWAIT) { 4141 if (!inode_trylock(inode)) { 4142 ret = -EAGAIN; 4143 goto out; 4144 } 4145 } else { 4146 inode_lock(inode); 4147 } 4148 4149 if (unlikely(IS_IMMUTABLE(inode))) { 4150 ret = -EPERM; 4151 goto unlock; 4152 } 4153 4154 ret = generic_write_checks(iocb, from); 4155 if (ret > 0) { 4156 bool preallocated = false; 4157 size_t target_size = 0; 4158 int err; 4159 4160 if (iov_iter_fault_in_readable(from, iov_iter_count(from))) 4161 set_inode_flag(inode, FI_NO_PREALLOC); 4162 4163 if ((iocb->ki_flags & IOCB_NOWAIT)) { 4164 if (!f2fs_overwrite_io(inode, iocb->ki_pos, 4165 iov_iter_count(from)) || 4166 f2fs_has_inline_data(inode) || 4167 f2fs_force_buffered_io(inode, iocb, from)) { 4168 clear_inode_flag(inode, FI_NO_PREALLOC); 4169 inode_unlock(inode); 4170 ret = -EAGAIN; 4171 goto out; 4172 } 4173 goto write; 4174 } 4175 4176 if (is_inode_flag_set(inode, FI_NO_PREALLOC)) 4177 goto write; 4178 4179 if (iocb->ki_flags & IOCB_DIRECT) { 4180 /* 4181 * Convert inline data for Direct I/O before entering 4182 * f2fs_direct_IO(). 4183 */ 4184 err = f2fs_convert_inline_inode(inode); 4185 if (err) 4186 goto out_err; 4187 /* 4188 * If force_buffere_io() is true, we have to allocate 4189 * blocks all the time, since f2fs_direct_IO will fall 4190 * back to buffered IO. 4191 */ 4192 if (!f2fs_force_buffered_io(inode, iocb, from) && 4193 allow_outplace_dio(inode, iocb, from)) 4194 goto write; 4195 } 4196 preallocated = true; 4197 target_size = iocb->ki_pos + iov_iter_count(from); 4198 4199 err = f2fs_preallocate_blocks(iocb, from); 4200 if (err) { 4201out_err: 4202 clear_inode_flag(inode, FI_NO_PREALLOC); 4203 inode_unlock(inode); 4204 ret = err; 4205 goto out; 4206 } 4207write: 4208 ret = __generic_file_write_iter(iocb, from); 4209 clear_inode_flag(inode, FI_NO_PREALLOC); 4210 4211 /* if we couldn't write data, we should deallocate blocks. */ 4212 if (preallocated && i_size_read(inode) < target_size) 4213 f2fs_truncate(inode); 4214 4215 if (ret > 0) 4216 f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret); 4217 } 4218unlock: 4219 inode_unlock(inode); 4220out: 4221 trace_f2fs_file_write_iter(inode, iocb->ki_pos, 4222 iov_iter_count(from), ret); 4223 if (ret > 0) 4224 ret = generic_write_sync(iocb, ret); 4225 return ret; 4226} 4227 4228#ifdef CONFIG_COMPAT 4229struct compat_f2fs_gc_range { 4230 u32 sync; 4231 compat_u64 start; 4232 compat_u64 len; 4233}; 4234#define F2FS_IOC32_GARBAGE_COLLECT_RANGE _IOW(F2FS_IOCTL_MAGIC, 11,\ 4235 struct compat_f2fs_gc_range) 4236 4237static int f2fs_compat_ioc_gc_range(struct file *file, unsigned long arg) 4238{ 4239 struct compat_f2fs_gc_range __user *urange; 4240 struct f2fs_gc_range range; 4241 int err; 4242 4243 urange = compat_ptr(arg); 4244 err = get_user(range.sync, &urange->sync); 4245 err |= get_user(range.start, &urange->start); 4246 err |= get_user(range.len, &urange->len); 4247 if (err) 4248 return -EFAULT; 4249 4250 return __f2fs_ioc_gc_range(file, &range); 4251} 4252 4253struct compat_f2fs_move_range { 4254 u32 dst_fd; 4255 compat_u64 pos_in; 4256 compat_u64 pos_out; 4257 compat_u64 len; 4258}; 4259#define F2FS_IOC32_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \ 4260 struct compat_f2fs_move_range) 4261 4262static int f2fs_compat_ioc_move_range(struct file *file, unsigned long arg) 4263{ 4264 struct compat_f2fs_move_range __user *urange; 4265 struct f2fs_move_range range; 4266 int err; 4267 4268 urange = compat_ptr(arg); 4269 err = get_user(range.dst_fd, &urange->dst_fd); 4270 err |= get_user(range.pos_in, &urange->pos_in); 4271 err |= get_user(range.pos_out, &urange->pos_out); 4272 err |= get_user(range.len, &urange->len); 4273 if (err) 4274 return -EFAULT; 4275 4276 return __f2fs_ioc_move_range(file, &range); 4277} 4278 4279long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 4280{ 4281 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file))))) 4282 return -EIO; 4283 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(file)))) 4284 return -ENOSPC; 4285 4286 switch (cmd) { 4287 case FS_IOC32_GETFLAGS: 4288 cmd = FS_IOC_GETFLAGS; 4289 break; 4290 case FS_IOC32_SETFLAGS: 4291 cmd = FS_IOC_SETFLAGS; 4292 break; 4293 case FS_IOC32_GETVERSION: 4294 cmd = FS_IOC_GETVERSION; 4295 break; 4296 case F2FS_IOC32_GARBAGE_COLLECT_RANGE: 4297 return f2fs_compat_ioc_gc_range(file, arg); 4298 case F2FS_IOC32_MOVE_RANGE: 4299 return f2fs_compat_ioc_move_range(file, arg); 4300 case F2FS_IOC_START_ATOMIC_WRITE: 4301 case F2FS_IOC_COMMIT_ATOMIC_WRITE: 4302 case F2FS_IOC_START_VOLATILE_WRITE: 4303 case F2FS_IOC_RELEASE_VOLATILE_WRITE: 4304 case F2FS_IOC_ABORT_VOLATILE_WRITE: 4305 case F2FS_IOC_SHUTDOWN: 4306 case FITRIM: 4307 case FS_IOC_SET_ENCRYPTION_POLICY: 4308 case FS_IOC_GET_ENCRYPTION_PWSALT: 4309 case FS_IOC_GET_ENCRYPTION_POLICY: 4310 case FS_IOC_GET_ENCRYPTION_POLICY_EX: 4311 case FS_IOC_ADD_ENCRYPTION_KEY: 4312 case FS_IOC_REMOVE_ENCRYPTION_KEY: 4313 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS: 4314 case FS_IOC_GET_ENCRYPTION_KEY_STATUS: 4315 case FS_IOC_GET_ENCRYPTION_NONCE: 4316 case F2FS_IOC_GARBAGE_COLLECT: 4317 case F2FS_IOC_WRITE_CHECKPOINT: 4318 case F2FS_IOC_DEFRAGMENT: 4319 case F2FS_IOC_FLUSH_DEVICE: 4320 case F2FS_IOC_GET_FEATURES: 4321 case FS_IOC_FSGETXATTR: 4322 case FS_IOC_FSSETXATTR: 4323 case F2FS_IOC_GET_PIN_FILE: 4324 case F2FS_IOC_SET_PIN_FILE: 4325 case F2FS_IOC_PRECACHE_EXTENTS: 4326 case F2FS_IOC_RESIZE_FS: 4327 case FS_IOC_ENABLE_VERITY: 4328 case FS_IOC_MEASURE_VERITY: 4329 case FS_IOC_ENABLE_CODE_SIGN: 4330 case FS_IOC_GETFSLABEL: 4331 case FS_IOC_SETFSLABEL: 4332 case F2FS_IOC_GET_COMPRESS_BLOCKS: 4333 case F2FS_IOC_RELEASE_COMPRESS_BLOCKS: 4334 case F2FS_IOC_RESERVE_COMPRESS_BLOCKS: 4335 case F2FS_IOC_SEC_TRIM_FILE: 4336 break; 4337 default: 4338 return -ENOIOCTLCMD; 4339 } 4340 return __f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); 4341} 4342#endif 4343 4344const struct file_operations f2fs_file_operations = { 4345 .llseek = f2fs_llseek, 4346 .read_iter = f2fs_file_read_iter, 4347 .write_iter = f2fs_file_write_iter, 4348 .open = f2fs_file_open, 4349 .release = f2fs_release_file, 4350 .mmap = f2fs_file_mmap, 4351 .flush = f2fs_file_flush, 4352 .fsync = f2fs_sync_file, 4353 .fallocate = f2fs_fallocate, 4354 .unlocked_ioctl = f2fs_ioctl, 4355#ifdef CONFIG_COMPAT 4356 .compat_ioctl = f2fs_compat_ioctl, 4357#endif 4358 .splice_read = generic_file_splice_read, 4359 .splice_write = iter_file_splice_write, 4360}; 4361