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