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