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