1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * linux/fs/hfsplus/inode.c 4 * 5 * Copyright (C) 2001 6 * Brad Boyer (flar@allandria.com) 7 * (C) 2003 Ardis Technologies <roman@ardistech.com> 8 * 9 * Inode handling routines 10 */ 11 12 #include <linux/blkdev.h> 13 #include <linux/mm.h> 14 #include <linux/fs.h> 15 #include <linux/pagemap.h> 16 #include <linux/mpage.h> 17 #include <linux/sched.h> 18 #include <linux/cred.h> 19 #include <linux/uio.h> 20 #include <linux/fileattr.h> 21 22 #include "hfsplus_fs.h" 23 #include "hfsplus_raw.h" 24 #include "xattr.h" 25 26 static int hfsplus_read_folio(struct file *file, struct folio *folio) 27 { 28 return block_read_full_folio(folio, hfsplus_get_block); 29 } 30 31 static void hfsplus_write_failed(struct address_space *mapping, loff_t to) 32 { 33 struct inode *inode = mapping->host; 34 35 if (to > inode->i_size) { 36 truncate_pagecache(inode, inode->i_size); 37 hfsplus_file_truncate(inode); 38 } 39 } 40 41 int hfsplus_write_begin(const struct kiocb *iocb, 42 struct address_space *mapping, loff_t pos, 43 unsigned len, struct folio **foliop, 44 void **fsdata) 45 { 46 int ret; 47 48 ret = cont_write_begin(iocb, mapping, pos, len, foliop, fsdata, 49 hfsplus_get_block, 50 &HFSPLUS_I(mapping->host)->phys_size); 51 if (unlikely(ret)) 52 hfsplus_write_failed(mapping, pos + len); 53 54 return ret; 55 } 56 57 static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block) 58 { 59 return generic_block_bmap(mapping, block, hfsplus_get_block); 60 } 61 62 static bool hfsplus_release_folio(struct folio *folio, gfp_t mask) 63 { 64 struct inode *inode = folio->mapping->host; 65 struct super_block *sb = inode->i_sb; 66 struct hfs_btree *tree; 67 struct hfs_bnode *node; 68 u32 nidx; 69 int i; 70 bool res = true; 71 72 switch (inode->i_ino) { 73 case HFSPLUS_EXT_CNID: 74 tree = HFSPLUS_SB(sb)->ext_tree; 75 break; 76 case HFSPLUS_CAT_CNID: 77 tree = HFSPLUS_SB(sb)->cat_tree; 78 break; 79 case HFSPLUS_ATTR_CNID: 80 tree = HFSPLUS_SB(sb)->attr_tree; 81 break; 82 default: 83 BUG(); 84 return false; 85 } 86 if (!tree) 87 return false; 88 if (tree->node_size >= PAGE_SIZE) { 89 nidx = folio->index >> 90 (tree->node_size_shift - PAGE_SHIFT); 91 spin_lock(&tree->hash_lock); 92 node = hfs_bnode_findhash(tree, nidx); 93 if (!node) 94 ; 95 else if (atomic_read(&node->refcnt)) 96 res = false; 97 if (res && node) { 98 hfs_bnode_unhash(node); 99 hfs_bnode_free(node); 100 } 101 spin_unlock(&tree->hash_lock); 102 } else { 103 nidx = folio->index << 104 (PAGE_SHIFT - tree->node_size_shift); 105 i = 1 << (PAGE_SHIFT - tree->node_size_shift); 106 spin_lock(&tree->hash_lock); 107 do { 108 node = hfs_bnode_findhash(tree, nidx++); 109 if (!node) 110 continue; 111 if (atomic_read(&node->refcnt)) { 112 res = false; 113 break; 114 } 115 hfs_bnode_unhash(node); 116 hfs_bnode_free(node); 117 } while (--i && nidx < tree->node_count); 118 spin_unlock(&tree->hash_lock); 119 } 120 return res ? try_to_free_buffers(folio) : false; 121 } 122 123 static ssize_t hfsplus_direct_IO(struct kiocb *iocb, struct iov_iter *iter) 124 { 125 struct file *file = iocb->ki_filp; 126 struct address_space *mapping = file->f_mapping; 127 struct inode *inode = mapping->host; 128 size_t count = iov_iter_count(iter); 129 ssize_t ret; 130 131 ret = blockdev_direct_IO(iocb, inode, iter, hfsplus_get_block); 132 133 /* 134 * In case of error extending write may have instantiated a few 135 * blocks outside i_size. Trim these off again. 136 */ 137 if (unlikely(iov_iter_rw(iter) == WRITE && ret < 0)) { 138 loff_t isize = i_size_read(inode); 139 loff_t end = iocb->ki_pos + count; 140 141 if (end > isize) 142 hfsplus_write_failed(mapping, end); 143 } 144 145 return ret; 146 } 147 148 static int hfsplus_writepages(struct address_space *mapping, 149 struct writeback_control *wbc) 150 { 151 return mpage_writepages(mapping, wbc, hfsplus_get_block); 152 } 153 154 const struct address_space_operations hfsplus_btree_aops = { 155 .dirty_folio = block_dirty_folio, 156 .invalidate_folio = block_invalidate_folio, 157 .read_folio = hfsplus_read_folio, 158 .writepages = hfsplus_writepages, 159 .write_begin = hfsplus_write_begin, 160 .write_end = generic_write_end, 161 .migrate_folio = buffer_migrate_folio, 162 .bmap = hfsplus_bmap, 163 .release_folio = hfsplus_release_folio, 164 }; 165 166 const struct address_space_operations hfsplus_aops = { 167 .dirty_folio = block_dirty_folio, 168 .invalidate_folio = block_invalidate_folio, 169 .read_folio = hfsplus_read_folio, 170 .write_begin = hfsplus_write_begin, 171 .write_end = generic_write_end, 172 .bmap = hfsplus_bmap, 173 .direct_IO = hfsplus_direct_IO, 174 .writepages = hfsplus_writepages, 175 .migrate_folio = buffer_migrate_folio, 176 }; 177 178 const struct dentry_operations hfsplus_dentry_operations = { 179 .d_hash = hfsplus_hash_dentry, 180 .d_compare = hfsplus_compare_dentry, 181 }; 182 183 static void hfsplus_get_perms(struct inode *inode, 184 struct hfsplus_perm *perms, int dir) 185 { 186 struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); 187 u16 mode; 188 189 mode = be16_to_cpu(perms->mode); 190 191 i_uid_write(inode, be32_to_cpu(perms->owner)); 192 if ((test_bit(HFSPLUS_SB_UID, &sbi->flags)) || (!i_uid_read(inode) && !mode)) 193 inode->i_uid = sbi->uid; 194 195 i_gid_write(inode, be32_to_cpu(perms->group)); 196 if ((test_bit(HFSPLUS_SB_GID, &sbi->flags)) || (!i_gid_read(inode) && !mode)) 197 inode->i_gid = sbi->gid; 198 199 if (dir) { 200 mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask)); 201 mode |= S_IFDIR; 202 } else if (!mode) 203 mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask)); 204 inode->i_mode = mode; 205 206 HFSPLUS_I(inode)->userflags = perms->userflags; 207 if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE) 208 inode->i_flags |= S_IMMUTABLE; 209 else 210 inode->i_flags &= ~S_IMMUTABLE; 211 if (perms->rootflags & HFSPLUS_FLG_APPEND) 212 inode->i_flags |= S_APPEND; 213 else 214 inode->i_flags &= ~S_APPEND; 215 } 216 217 static int hfsplus_file_open(struct inode *inode, struct file *file) 218 { 219 if (HFSPLUS_IS_RSRC(inode)) 220 inode = HFSPLUS_I(inode)->rsrc_inode; 221 if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) 222 return -EOVERFLOW; 223 atomic_inc(&HFSPLUS_I(inode)->opencnt); 224 return 0; 225 } 226 227 static int hfsplus_file_release(struct inode *inode, struct file *file) 228 { 229 struct super_block *sb = inode->i_sb; 230 231 if (HFSPLUS_IS_RSRC(inode)) 232 inode = HFSPLUS_I(inode)->rsrc_inode; 233 if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) { 234 inode_lock(inode); 235 hfsplus_file_truncate(inode); 236 if (inode->i_flags & S_DEAD) { 237 hfsplus_delete_cat(inode->i_ino, 238 HFSPLUS_SB(sb)->hidden_dir, NULL); 239 hfsplus_delete_inode(inode); 240 } 241 inode_unlock(inode); 242 } 243 return 0; 244 } 245 246 static int hfsplus_setattr(struct mnt_idmap *idmap, 247 struct dentry *dentry, struct iattr *attr) 248 { 249 struct inode *inode = d_inode(dentry); 250 int error; 251 252 error = setattr_prepare(&nop_mnt_idmap, dentry, attr); 253 if (error) 254 return error; 255 256 if ((attr->ia_valid & ATTR_SIZE) && 257 attr->ia_size != i_size_read(inode)) { 258 inode_dio_wait(inode); 259 if (attr->ia_size > inode->i_size) { 260 error = generic_cont_expand_simple(inode, 261 attr->ia_size); 262 if (error) 263 return error; 264 } 265 truncate_setsize(inode, attr->ia_size); 266 hfsplus_file_truncate(inode); 267 inode_set_mtime_to_ts(inode, inode_set_ctime_current(inode)); 268 } 269 270 setattr_copy(&nop_mnt_idmap, inode, attr); 271 mark_inode_dirty(inode); 272 273 return 0; 274 } 275 276 int hfsplus_getattr(struct mnt_idmap *idmap, const struct path *path, 277 struct kstat *stat, u32 request_mask, 278 unsigned int query_flags) 279 { 280 struct inode *inode = d_inode(path->dentry); 281 struct hfsplus_inode_info *hip = HFSPLUS_I(inode); 282 283 if (request_mask & STATX_BTIME) { 284 stat->result_mask |= STATX_BTIME; 285 stat->btime = hfsp_mt2ut(hip->create_date); 286 } 287 288 if (inode->i_flags & S_APPEND) 289 stat->attributes |= STATX_ATTR_APPEND; 290 if (inode->i_flags & S_IMMUTABLE) 291 stat->attributes |= STATX_ATTR_IMMUTABLE; 292 if (hip->userflags & HFSPLUS_FLG_NODUMP) 293 stat->attributes |= STATX_ATTR_NODUMP; 294 295 stat->attributes_mask |= STATX_ATTR_APPEND | STATX_ATTR_IMMUTABLE | 296 STATX_ATTR_NODUMP; 297 298 generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); 299 return 0; 300 } 301 302 int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, 303 int datasync) 304 { 305 struct inode *inode = file->f_mapping->host; 306 struct hfsplus_inode_info *hip = HFSPLUS_I(inode); 307 struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); 308 int error = 0, error2; 309 310 error = file_write_and_wait_range(file, start, end); 311 if (error) 312 return error; 313 inode_lock(inode); 314 315 /* 316 * Sync inode metadata into the catalog and extent trees. 317 */ 318 sync_inode_metadata(inode, 1); 319 320 /* 321 * And explicitly write out the btrees. 322 */ 323 if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags)) 324 error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping); 325 326 if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) { 327 error2 = 328 filemap_write_and_wait(sbi->ext_tree->inode->i_mapping); 329 if (!error) 330 error = error2; 331 } 332 333 if (test_and_clear_bit(HFSPLUS_I_ATTR_DIRTY, &hip->flags)) { 334 if (sbi->attr_tree) { 335 error2 = 336 filemap_write_and_wait( 337 sbi->attr_tree->inode->i_mapping); 338 if (!error) 339 error = error2; 340 } else { 341 pr_err("sync non-existent attributes tree\n"); 342 } 343 } 344 345 if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) { 346 error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping); 347 if (!error) 348 error = error2; 349 } 350 351 if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags)) 352 blkdev_issue_flush(inode->i_sb->s_bdev); 353 354 inode_unlock(inode); 355 356 return error; 357 } 358 359 static const struct inode_operations hfsplus_file_inode_operations = { 360 .setattr = hfsplus_setattr, 361 .getattr = hfsplus_getattr, 362 .listxattr = hfsplus_listxattr, 363 .fileattr_get = hfsplus_fileattr_get, 364 .fileattr_set = hfsplus_fileattr_set, 365 }; 366 367 static const struct file_operations hfsplus_file_operations = { 368 .llseek = generic_file_llseek, 369 .read_iter = generic_file_read_iter, 370 .write_iter = generic_file_write_iter, 371 .mmap_prepare = generic_file_mmap_prepare, 372 .splice_read = filemap_splice_read, 373 .fsync = hfsplus_file_fsync, 374 .open = hfsplus_file_open, 375 .release = hfsplus_file_release, 376 .unlocked_ioctl = hfsplus_ioctl, 377 }; 378 379 struct inode *hfsplus_new_inode(struct super_block *sb, struct inode *dir, 380 umode_t mode) 381 { 382 struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); 383 struct inode *inode = new_inode(sb); 384 struct hfsplus_inode_info *hip; 385 386 if (!inode) 387 return NULL; 388 389 inode->i_ino = sbi->next_cnid++; 390 inode_init_owner(&nop_mnt_idmap, inode, dir, mode); 391 set_nlink(inode, 1); 392 simple_inode_init_ts(inode); 393 394 hip = HFSPLUS_I(inode); 395 INIT_LIST_HEAD(&hip->open_dir_list); 396 spin_lock_init(&hip->open_dir_lock); 397 mutex_init(&hip->extents_lock); 398 atomic_set(&hip->opencnt, 0); 399 hip->extent_state = 0; 400 hip->flags = 0; 401 hip->userflags = 0; 402 hip->subfolders = 0; 403 memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec)); 404 memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); 405 hip->alloc_blocks = 0; 406 hip->first_blocks = 0; 407 hip->cached_start = 0; 408 hip->cached_blocks = 0; 409 hip->phys_size = 0; 410 hip->fs_blocks = 0; 411 hip->rsrc_inode = NULL; 412 if (S_ISDIR(inode->i_mode)) { 413 inode->i_size = 2; 414 sbi->folder_count++; 415 inode->i_op = &hfsplus_dir_inode_operations; 416 inode->i_fop = &hfsplus_dir_operations; 417 } else if (S_ISREG(inode->i_mode)) { 418 sbi->file_count++; 419 inode->i_op = &hfsplus_file_inode_operations; 420 inode->i_fop = &hfsplus_file_operations; 421 inode->i_mapping->a_ops = &hfsplus_aops; 422 hip->clump_blocks = sbi->data_clump_blocks; 423 } else if (S_ISLNK(inode->i_mode)) { 424 sbi->file_count++; 425 inode->i_op = &page_symlink_inode_operations; 426 inode_nohighmem(inode); 427 inode->i_mapping->a_ops = &hfsplus_aops; 428 hip->clump_blocks = 1; 429 } else 430 sbi->file_count++; 431 insert_inode_hash(inode); 432 mark_inode_dirty(inode); 433 hfsplus_mark_mdb_dirty(sb); 434 435 return inode; 436 } 437 438 void hfsplus_delete_inode(struct inode *inode) 439 { 440 struct super_block *sb = inode->i_sb; 441 442 if (S_ISDIR(inode->i_mode)) { 443 HFSPLUS_SB(sb)->folder_count--; 444 hfsplus_mark_mdb_dirty(sb); 445 return; 446 } 447 HFSPLUS_SB(sb)->file_count--; 448 if (S_ISREG(inode->i_mode)) { 449 if (!inode->i_nlink) { 450 inode->i_size = 0; 451 hfsplus_file_truncate(inode); 452 } 453 } else if (S_ISLNK(inode->i_mode)) { 454 inode->i_size = 0; 455 hfsplus_file_truncate(inode); 456 } 457 hfsplus_mark_mdb_dirty(sb); 458 } 459 460 void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork) 461 { 462 struct super_block *sb = inode->i_sb; 463 struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); 464 struct hfsplus_inode_info *hip = HFSPLUS_I(inode); 465 u32 count; 466 int i; 467 468 memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec)); 469 for (count = 0, i = 0; i < 8; i++) 470 count += be32_to_cpu(fork->extents[i].block_count); 471 hip->first_blocks = count; 472 memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); 473 hip->cached_start = 0; 474 hip->cached_blocks = 0; 475 476 hip->alloc_blocks = be32_to_cpu(fork->total_blocks); 477 hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size); 478 hip->fs_blocks = 479 (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; 480 inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits); 481 hip->clump_blocks = 482 be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift; 483 if (!hip->clump_blocks) { 484 hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ? 485 sbi->rsrc_clump_blocks : 486 sbi->data_clump_blocks; 487 } 488 } 489 490 void hfsplus_inode_write_fork(struct inode *inode, 491 struct hfsplus_fork_raw *fork) 492 { 493 memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents, 494 sizeof(hfsplus_extent_rec)); 495 fork->total_size = cpu_to_be64(inode->i_size); 496 fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks); 497 } 498 499 int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) 500 { 501 hfsplus_cat_entry entry; 502 int res = 0; 503 u16 type; 504 505 type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset); 506 507 HFSPLUS_I(inode)->linkid = 0; 508 if (type == HFSPLUS_FOLDER) { 509 struct hfsplus_cat_folder *folder = &entry.folder; 510 511 if (fd->entrylength < sizeof(struct hfsplus_cat_folder)) { 512 pr_err("bad catalog folder entry\n"); 513 res = -EIO; 514 goto out; 515 } 516 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, 517 sizeof(struct hfsplus_cat_folder)); 518 hfsplus_get_perms(inode, &folder->permissions, 1); 519 set_nlink(inode, 1); 520 inode->i_size = 2 + be32_to_cpu(folder->valence); 521 inode_set_atime_to_ts(inode, hfsp_mt2ut(folder->access_date)); 522 inode_set_mtime_to_ts(inode, 523 hfsp_mt2ut(folder->content_mod_date)); 524 inode_set_ctime_to_ts(inode, 525 hfsp_mt2ut(folder->attribute_mod_date)); 526 HFSPLUS_I(inode)->create_date = folder->create_date; 527 HFSPLUS_I(inode)->fs_blocks = 0; 528 if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { 529 HFSPLUS_I(inode)->subfolders = 530 be32_to_cpu(folder->subfolders); 531 } 532 inode->i_op = &hfsplus_dir_inode_operations; 533 inode->i_fop = &hfsplus_dir_operations; 534 } else if (type == HFSPLUS_FILE) { 535 struct hfsplus_cat_file *file = &entry.file; 536 537 if (fd->entrylength < sizeof(struct hfsplus_cat_file)) { 538 pr_err("bad catalog file entry\n"); 539 res = -EIO; 540 goto out; 541 } 542 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, 543 sizeof(struct hfsplus_cat_file)); 544 545 hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ? 546 &file->rsrc_fork : &file->data_fork); 547 hfsplus_get_perms(inode, &file->permissions, 0); 548 set_nlink(inode, 1); 549 if (S_ISREG(inode->i_mode)) { 550 if (file->permissions.dev) 551 set_nlink(inode, 552 be32_to_cpu(file->permissions.dev)); 553 inode->i_op = &hfsplus_file_inode_operations; 554 inode->i_fop = &hfsplus_file_operations; 555 inode->i_mapping->a_ops = &hfsplus_aops; 556 } else if (S_ISLNK(inode->i_mode)) { 557 inode->i_op = &page_symlink_inode_operations; 558 inode_nohighmem(inode); 559 inode->i_mapping->a_ops = &hfsplus_aops; 560 } else { 561 init_special_inode(inode, inode->i_mode, 562 be32_to_cpu(file->permissions.dev)); 563 } 564 inode_set_atime_to_ts(inode, hfsp_mt2ut(file->access_date)); 565 inode_set_mtime_to_ts(inode, 566 hfsp_mt2ut(file->content_mod_date)); 567 inode_set_ctime_to_ts(inode, 568 hfsp_mt2ut(file->attribute_mod_date)); 569 HFSPLUS_I(inode)->create_date = file->create_date; 570 } else { 571 pr_err("bad catalog entry used to create inode\n"); 572 res = -EIO; 573 } 574 out: 575 return res; 576 } 577 578 int hfsplus_cat_write_inode(struct inode *inode) 579 { 580 struct inode *main_inode = inode; 581 struct hfs_find_data fd; 582 hfsplus_cat_entry entry; 583 int res = 0; 584 585 if (HFSPLUS_IS_RSRC(inode)) 586 main_inode = HFSPLUS_I(inode)->rsrc_inode; 587 588 if (!main_inode->i_nlink) 589 return 0; 590 591 if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd)) 592 /* panic? */ 593 return -EIO; 594 595 if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd)) 596 /* panic? */ 597 goto out; 598 599 if (S_ISDIR(main_inode->i_mode)) { 600 struct hfsplus_cat_folder *folder = &entry.folder; 601 602 if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) { 603 pr_err("bad catalog folder entry\n"); 604 res = -EIO; 605 goto out; 606 } 607 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, 608 sizeof(struct hfsplus_cat_folder)); 609 /* simple node checks? */ 610 hfsplus_cat_set_perms(inode, &folder->permissions); 611 folder->access_date = hfsp_ut2mt(inode_get_atime(inode)); 612 folder->content_mod_date = hfsp_ut2mt(inode_get_mtime(inode)); 613 folder->attribute_mod_date = hfsp_ut2mt(inode_get_ctime(inode)); 614 folder->valence = cpu_to_be32(inode->i_size - 2); 615 if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { 616 folder->subfolders = 617 cpu_to_be32(HFSPLUS_I(inode)->subfolders); 618 } 619 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, 620 sizeof(struct hfsplus_cat_folder)); 621 } else if (HFSPLUS_IS_RSRC(inode)) { 622 struct hfsplus_cat_file *file = &entry.file; 623 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, 624 sizeof(struct hfsplus_cat_file)); 625 hfsplus_inode_write_fork(inode, &file->rsrc_fork); 626 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, 627 sizeof(struct hfsplus_cat_file)); 628 } else { 629 struct hfsplus_cat_file *file = &entry.file; 630 631 if (fd.entrylength < sizeof(struct hfsplus_cat_file)) { 632 pr_err("bad catalog file entry\n"); 633 res = -EIO; 634 goto out; 635 } 636 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, 637 sizeof(struct hfsplus_cat_file)); 638 hfsplus_inode_write_fork(inode, &file->data_fork); 639 hfsplus_cat_set_perms(inode, &file->permissions); 640 if (HFSPLUS_FLG_IMMUTABLE & 641 (file->permissions.rootflags | 642 file->permissions.userflags)) 643 file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED); 644 else 645 file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED); 646 file->access_date = hfsp_ut2mt(inode_get_atime(inode)); 647 file->content_mod_date = hfsp_ut2mt(inode_get_mtime(inode)); 648 file->attribute_mod_date = hfsp_ut2mt(inode_get_ctime(inode)); 649 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, 650 sizeof(struct hfsplus_cat_file)); 651 } 652 653 set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags); 654 out: 655 hfs_find_exit(&fd); 656 return res; 657 } 658 659 int hfsplus_fileattr_get(struct dentry *dentry, struct fileattr *fa) 660 { 661 struct inode *inode = d_inode(dentry); 662 struct hfsplus_inode_info *hip = HFSPLUS_I(inode); 663 unsigned int flags = 0; 664 665 if (inode->i_flags & S_IMMUTABLE) 666 flags |= FS_IMMUTABLE_FL; 667 if (inode->i_flags & S_APPEND) 668 flags |= FS_APPEND_FL; 669 if (hip->userflags & HFSPLUS_FLG_NODUMP) 670 flags |= FS_NODUMP_FL; 671 672 fileattr_fill_flags(fa, flags); 673 674 return 0; 675 } 676 677 int hfsplus_fileattr_set(struct mnt_idmap *idmap, 678 struct dentry *dentry, struct fileattr *fa) 679 { 680 struct inode *inode = d_inode(dentry); 681 struct hfsplus_inode_info *hip = HFSPLUS_I(inode); 682 unsigned int new_fl = 0; 683 684 if (fileattr_has_fsx(fa)) 685 return -EOPNOTSUPP; 686 687 /* don't silently ignore unsupported ext2 flags */ 688 if (fa->flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL)) 689 return -EOPNOTSUPP; 690 691 if (fa->flags & FS_IMMUTABLE_FL) 692 new_fl |= S_IMMUTABLE; 693 694 if (fa->flags & FS_APPEND_FL) 695 new_fl |= S_APPEND; 696 697 inode_set_flags(inode, new_fl, S_IMMUTABLE | S_APPEND); 698 699 if (fa->flags & FS_NODUMP_FL) 700 hip->userflags |= HFSPLUS_FLG_NODUMP; 701 else 702 hip->userflags &= ~HFSPLUS_FLG_NODUMP; 703 704 inode_set_ctime_current(inode); 705 mark_inode_dirty(inode); 706 707 return 0; 708 } 709