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_readpage(struct file *file, struct page *page) 27 { 28 return block_read_full_page(page, 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 static int hfsplus_write_begin(struct file *file, struct address_space *mapping, 47 loff_t pos, unsigned len, unsigned flags, 48 struct page **pagep, void **fsdata) 49 { 50 int ret; 51 52 *pagep = NULL; 53 ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata, 54 hfsplus_get_block, 55 &HFSPLUS_I(mapping->host)->phys_size); 56 if (unlikely(ret)) 57 hfsplus_write_failed(mapping, pos + len); 58 59 return ret; 60 } 61 62 static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block) 63 { 64 return generic_block_bmap(mapping, block, hfsplus_get_block); 65 } 66 67 static int hfsplus_releasepage(struct page *page, gfp_t mask) 68 { 69 struct inode *inode = page->mapping->host; 70 struct super_block *sb = inode->i_sb; 71 struct hfs_btree *tree; 72 struct hfs_bnode *node; 73 u32 nidx; 74 int i, res = 1; 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 0; 89 } 90 if (!tree) 91 return 0; 92 if (tree->node_size >= PAGE_SIZE) { 93 nidx = page->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 = 0; 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 = page->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 = 0; 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(page) : 0; 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 .readpage = hfsplus_readpage, 160 .writepage = hfsplus_writepage, 161 .write_begin = hfsplus_write_begin, 162 .write_end = generic_write_end, 163 .bmap = hfsplus_bmap, 164 .releasepage = hfsplus_releasepage, 165 }; 166 167 const struct address_space_operations hfsplus_aops = { 168 .readpage = hfsplus_readpage, 169 .writepage = hfsplus_writepage, 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 }; 176 177 const struct dentry_operations hfsplus_dentry_operations = { 178 .d_hash = hfsplus_hash_dentry, 179 .d_compare = hfsplus_compare_dentry, 180 }; 181 182 static void hfsplus_get_perms(struct inode *inode, 183 struct hfsplus_perm *perms, int dir) 184 { 185 struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); 186 u16 mode; 187 188 mode = be16_to_cpu(perms->mode); 189 190 i_uid_write(inode, be32_to_cpu(perms->owner)); 191 if (!i_uid_read(inode) && !mode) 192 inode->i_uid = sbi->uid; 193 194 i_gid_write(inode, be32_to_cpu(perms->group)); 195 if (!i_gid_read(inode) && !mode) 196 inode->i_gid = sbi->gid; 197 198 if (dir) { 199 mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask)); 200 mode |= S_IFDIR; 201 } else if (!mode) 202 mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask)); 203 inode->i_mode = mode; 204 205 HFSPLUS_I(inode)->userflags = perms->userflags; 206 if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE) 207 inode->i_flags |= S_IMMUTABLE; 208 else 209 inode->i_flags &= ~S_IMMUTABLE; 210 if (perms->rootflags & HFSPLUS_FLG_APPEND) 211 inode->i_flags |= S_APPEND; 212 else 213 inode->i_flags &= ~S_APPEND; 214 } 215 216 static int hfsplus_file_open(struct inode *inode, struct file *file) 217 { 218 if (HFSPLUS_IS_RSRC(inode)) 219 inode = HFSPLUS_I(inode)->rsrc_inode; 220 if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) 221 return -EOVERFLOW; 222 atomic_inc(&HFSPLUS_I(inode)->opencnt); 223 return 0; 224 } 225 226 static int hfsplus_file_release(struct inode *inode, struct file *file) 227 { 228 struct super_block *sb = inode->i_sb; 229 230 if (HFSPLUS_IS_RSRC(inode)) 231 inode = HFSPLUS_I(inode)->rsrc_inode; 232 if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) { 233 inode_lock(inode); 234 hfsplus_file_truncate(inode); 235 if (inode->i_flags & S_DEAD) { 236 hfsplus_delete_cat(inode->i_ino, 237 HFSPLUS_SB(sb)->hidden_dir, NULL); 238 hfsplus_delete_inode(inode); 239 } 240 inode_unlock(inode); 241 } 242 return 0; 243 } 244 245 static int hfsplus_setattr(struct user_namespace *mnt_userns, 246 struct dentry *dentry, struct iattr *attr) 247 { 248 struct inode *inode = d_inode(dentry); 249 int error; 250 251 error = setattr_prepare(&init_user_ns, dentry, attr); 252 if (error) 253 return error; 254 255 if ((attr->ia_valid & ATTR_SIZE) && 256 attr->ia_size != i_size_read(inode)) { 257 inode_dio_wait(inode); 258 if (attr->ia_size > inode->i_size) { 259 error = generic_cont_expand_simple(inode, 260 attr->ia_size); 261 if (error) 262 return error; 263 } 264 truncate_setsize(inode, attr->ia_size); 265 hfsplus_file_truncate(inode); 266 inode->i_mtime = inode->i_ctime = current_time(inode); 267 } 268 269 setattr_copy(&init_user_ns, inode, attr); 270 mark_inode_dirty(inode); 271 272 return 0; 273 } 274 275 int hfsplus_getattr(struct user_namespace *mnt_userns, const struct path *path, 276 struct kstat *stat, u32 request_mask, 277 unsigned int query_flags) 278 { 279 struct inode *inode = d_inode(path->dentry); 280 struct hfsplus_inode_info *hip = HFSPLUS_I(inode); 281 282 if (inode->i_flags & S_APPEND) 283 stat->attributes |= STATX_ATTR_APPEND; 284 if (inode->i_flags & S_IMMUTABLE) 285 stat->attributes |= STATX_ATTR_IMMUTABLE; 286 if (hip->userflags & HFSPLUS_FLG_NODUMP) 287 stat->attributes |= STATX_ATTR_NODUMP; 288 289 stat->attributes_mask |= STATX_ATTR_APPEND | STATX_ATTR_IMMUTABLE | 290 STATX_ATTR_NODUMP; 291 292 generic_fillattr(&init_user_ns, inode, stat); 293 return 0; 294 } 295 296 int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, 297 int datasync) 298 { 299 struct inode *inode = file->f_mapping->host; 300 struct hfsplus_inode_info *hip = HFSPLUS_I(inode); 301 struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); 302 int error = 0, error2; 303 304 error = file_write_and_wait_range(file, start, end); 305 if (error) 306 return error; 307 inode_lock(inode); 308 309 /* 310 * Sync inode metadata into the catalog and extent trees. 311 */ 312 sync_inode_metadata(inode, 1); 313 314 /* 315 * And explicitly write out the btrees. 316 */ 317 if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags)) 318 error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping); 319 320 if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) { 321 error2 = 322 filemap_write_and_wait(sbi->ext_tree->inode->i_mapping); 323 if (!error) 324 error = error2; 325 } 326 327 if (test_and_clear_bit(HFSPLUS_I_ATTR_DIRTY, &hip->flags)) { 328 if (sbi->attr_tree) { 329 error2 = 330 filemap_write_and_wait( 331 sbi->attr_tree->inode->i_mapping); 332 if (!error) 333 error = error2; 334 } else { 335 pr_err("sync non-existent attributes tree\n"); 336 } 337 } 338 339 if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) { 340 error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping); 341 if (!error) 342 error = error2; 343 } 344 345 if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags)) 346 blkdev_issue_flush(inode->i_sb->s_bdev); 347 348 inode_unlock(inode); 349 350 return error; 351 } 352 353 static const struct inode_operations hfsplus_file_inode_operations = { 354 .setattr = hfsplus_setattr, 355 .getattr = hfsplus_getattr, 356 .listxattr = hfsplus_listxattr, 357 .fileattr_get = hfsplus_fileattr_get, 358 .fileattr_set = hfsplus_fileattr_set, 359 }; 360 361 static const struct file_operations hfsplus_file_operations = { 362 .llseek = generic_file_llseek, 363 .read_iter = generic_file_read_iter, 364 .write_iter = generic_file_write_iter, 365 .mmap = generic_file_mmap, 366 .splice_read = generic_file_splice_read, 367 .fsync = hfsplus_file_fsync, 368 .open = hfsplus_file_open, 369 .release = hfsplus_file_release, 370 .unlocked_ioctl = hfsplus_ioctl, 371 }; 372 373 struct inode *hfsplus_new_inode(struct super_block *sb, struct inode *dir, 374 umode_t mode) 375 { 376 struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); 377 struct inode *inode = new_inode(sb); 378 struct hfsplus_inode_info *hip; 379 380 if (!inode) 381 return NULL; 382 383 inode->i_ino = sbi->next_cnid++; 384 inode_init_owner(&init_user_ns, inode, dir, mode); 385 set_nlink(inode, 1); 386 inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); 387 388 hip = HFSPLUS_I(inode); 389 INIT_LIST_HEAD(&hip->open_dir_list); 390 spin_lock_init(&hip->open_dir_lock); 391 mutex_init(&hip->extents_lock); 392 atomic_set(&hip->opencnt, 0); 393 hip->extent_state = 0; 394 hip->flags = 0; 395 hip->userflags = 0; 396 hip->subfolders = 0; 397 memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec)); 398 memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); 399 hip->alloc_blocks = 0; 400 hip->first_blocks = 0; 401 hip->cached_start = 0; 402 hip->cached_blocks = 0; 403 hip->phys_size = 0; 404 hip->fs_blocks = 0; 405 hip->rsrc_inode = NULL; 406 if (S_ISDIR(inode->i_mode)) { 407 inode->i_size = 2; 408 sbi->folder_count++; 409 inode->i_op = &hfsplus_dir_inode_operations; 410 inode->i_fop = &hfsplus_dir_operations; 411 } else if (S_ISREG(inode->i_mode)) { 412 sbi->file_count++; 413 inode->i_op = &hfsplus_file_inode_operations; 414 inode->i_fop = &hfsplus_file_operations; 415 inode->i_mapping->a_ops = &hfsplus_aops; 416 hip->clump_blocks = sbi->data_clump_blocks; 417 } else if (S_ISLNK(inode->i_mode)) { 418 sbi->file_count++; 419 inode->i_op = &page_symlink_inode_operations; 420 inode_nohighmem(inode); 421 inode->i_mapping->a_ops = &hfsplus_aops; 422 hip->clump_blocks = 1; 423 } else 424 sbi->file_count++; 425 insert_inode_hash(inode); 426 mark_inode_dirty(inode); 427 hfsplus_mark_mdb_dirty(sb); 428 429 return inode; 430 } 431 432 void hfsplus_delete_inode(struct inode *inode) 433 { 434 struct super_block *sb = inode->i_sb; 435 436 if (S_ISDIR(inode->i_mode)) { 437 HFSPLUS_SB(sb)->folder_count--; 438 hfsplus_mark_mdb_dirty(sb); 439 return; 440 } 441 HFSPLUS_SB(sb)->file_count--; 442 if (S_ISREG(inode->i_mode)) { 443 if (!inode->i_nlink) { 444 inode->i_size = 0; 445 hfsplus_file_truncate(inode); 446 } 447 } else if (S_ISLNK(inode->i_mode)) { 448 inode->i_size = 0; 449 hfsplus_file_truncate(inode); 450 } 451 hfsplus_mark_mdb_dirty(sb); 452 } 453 454 void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork) 455 { 456 struct super_block *sb = inode->i_sb; 457 struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); 458 struct hfsplus_inode_info *hip = HFSPLUS_I(inode); 459 u32 count; 460 int i; 461 462 memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec)); 463 for (count = 0, i = 0; i < 8; i++) 464 count += be32_to_cpu(fork->extents[i].block_count); 465 hip->first_blocks = count; 466 memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); 467 hip->cached_start = 0; 468 hip->cached_blocks = 0; 469 470 hip->alloc_blocks = be32_to_cpu(fork->total_blocks); 471 hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size); 472 hip->fs_blocks = 473 (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; 474 inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits); 475 hip->clump_blocks = 476 be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift; 477 if (!hip->clump_blocks) { 478 hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ? 479 sbi->rsrc_clump_blocks : 480 sbi->data_clump_blocks; 481 } 482 } 483 484 void hfsplus_inode_write_fork(struct inode *inode, 485 struct hfsplus_fork_raw *fork) 486 { 487 memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents, 488 sizeof(hfsplus_extent_rec)); 489 fork->total_size = cpu_to_be64(inode->i_size); 490 fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks); 491 } 492 493 int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) 494 { 495 hfsplus_cat_entry entry; 496 int res = 0; 497 u16 type; 498 499 type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset); 500 501 HFSPLUS_I(inode)->linkid = 0; 502 if (type == HFSPLUS_FOLDER) { 503 struct hfsplus_cat_folder *folder = &entry.folder; 504 505 if (fd->entrylength < sizeof(struct hfsplus_cat_folder)) 506 /* panic? */; 507 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, 508 sizeof(struct hfsplus_cat_folder)); 509 hfsplus_get_perms(inode, &folder->permissions, 1); 510 set_nlink(inode, 1); 511 inode->i_size = 2 + be32_to_cpu(folder->valence); 512 inode->i_atime = hfsp_mt2ut(folder->access_date); 513 inode->i_mtime = hfsp_mt2ut(folder->content_mod_date); 514 inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date); 515 HFSPLUS_I(inode)->create_date = folder->create_date; 516 HFSPLUS_I(inode)->fs_blocks = 0; 517 if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { 518 HFSPLUS_I(inode)->subfolders = 519 be32_to_cpu(folder->subfolders); 520 } 521 inode->i_op = &hfsplus_dir_inode_operations; 522 inode->i_fop = &hfsplus_dir_operations; 523 } else if (type == HFSPLUS_FILE) { 524 struct hfsplus_cat_file *file = &entry.file; 525 526 if (fd->entrylength < sizeof(struct hfsplus_cat_file)) 527 /* panic? */; 528 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, 529 sizeof(struct hfsplus_cat_file)); 530 531 hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ? 532 &file->rsrc_fork : &file->data_fork); 533 hfsplus_get_perms(inode, &file->permissions, 0); 534 set_nlink(inode, 1); 535 if (S_ISREG(inode->i_mode)) { 536 if (file->permissions.dev) 537 set_nlink(inode, 538 be32_to_cpu(file->permissions.dev)); 539 inode->i_op = &hfsplus_file_inode_operations; 540 inode->i_fop = &hfsplus_file_operations; 541 inode->i_mapping->a_ops = &hfsplus_aops; 542 } else if (S_ISLNK(inode->i_mode)) { 543 inode->i_op = &page_symlink_inode_operations; 544 inode_nohighmem(inode); 545 inode->i_mapping->a_ops = &hfsplus_aops; 546 } else { 547 init_special_inode(inode, inode->i_mode, 548 be32_to_cpu(file->permissions.dev)); 549 } 550 inode->i_atime = hfsp_mt2ut(file->access_date); 551 inode->i_mtime = hfsp_mt2ut(file->content_mod_date); 552 inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date); 553 HFSPLUS_I(inode)->create_date = file->create_date; 554 } else { 555 pr_err("bad catalog entry used to create inode\n"); 556 res = -EIO; 557 } 558 return res; 559 } 560 561 int hfsplus_cat_write_inode(struct inode *inode) 562 { 563 struct inode *main_inode = inode; 564 struct hfs_find_data fd; 565 hfsplus_cat_entry entry; 566 567 if (HFSPLUS_IS_RSRC(inode)) 568 main_inode = HFSPLUS_I(inode)->rsrc_inode; 569 570 if (!main_inode->i_nlink) 571 return 0; 572 573 if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd)) 574 /* panic? */ 575 return -EIO; 576 577 if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd)) 578 /* panic? */ 579 goto out; 580 581 if (S_ISDIR(main_inode->i_mode)) { 582 struct hfsplus_cat_folder *folder = &entry.folder; 583 584 if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) 585 /* panic? */; 586 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, 587 sizeof(struct hfsplus_cat_folder)); 588 /* simple node checks? */ 589 hfsplus_cat_set_perms(inode, &folder->permissions); 590 folder->access_date = hfsp_ut2mt(inode->i_atime); 591 folder->content_mod_date = hfsp_ut2mt(inode->i_mtime); 592 folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); 593 folder->valence = cpu_to_be32(inode->i_size - 2); 594 if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { 595 folder->subfolders = 596 cpu_to_be32(HFSPLUS_I(inode)->subfolders); 597 } 598 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, 599 sizeof(struct hfsplus_cat_folder)); 600 } else if (HFSPLUS_IS_RSRC(inode)) { 601 struct hfsplus_cat_file *file = &entry.file; 602 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, 603 sizeof(struct hfsplus_cat_file)); 604 hfsplus_inode_write_fork(inode, &file->rsrc_fork); 605 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, 606 sizeof(struct hfsplus_cat_file)); 607 } else { 608 struct hfsplus_cat_file *file = &entry.file; 609 610 if (fd.entrylength < sizeof(struct hfsplus_cat_file)) 611 /* panic? */; 612 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, 613 sizeof(struct hfsplus_cat_file)); 614 hfsplus_inode_write_fork(inode, &file->data_fork); 615 hfsplus_cat_set_perms(inode, &file->permissions); 616 if (HFSPLUS_FLG_IMMUTABLE & 617 (file->permissions.rootflags | 618 file->permissions.userflags)) 619 file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED); 620 else 621 file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED); 622 file->access_date = hfsp_ut2mt(inode->i_atime); 623 file->content_mod_date = hfsp_ut2mt(inode->i_mtime); 624 file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); 625 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, 626 sizeof(struct hfsplus_cat_file)); 627 } 628 629 set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags); 630 out: 631 hfs_find_exit(&fd); 632 return 0; 633 } 634 635 int hfsplus_fileattr_get(struct dentry *dentry, struct fileattr *fa) 636 { 637 struct inode *inode = d_inode(dentry); 638 struct hfsplus_inode_info *hip = HFSPLUS_I(inode); 639 unsigned int flags = 0; 640 641 if (inode->i_flags & S_IMMUTABLE) 642 flags |= FS_IMMUTABLE_FL; 643 if (inode->i_flags & S_APPEND) 644 flags |= FS_APPEND_FL; 645 if (hip->userflags & HFSPLUS_FLG_NODUMP) 646 flags |= FS_NODUMP_FL; 647 648 fileattr_fill_flags(fa, flags); 649 650 return 0; 651 } 652 653 int hfsplus_fileattr_set(struct user_namespace *mnt_userns, 654 struct dentry *dentry, struct fileattr *fa) 655 { 656 struct inode *inode = d_inode(dentry); 657 struct hfsplus_inode_info *hip = HFSPLUS_I(inode); 658 unsigned int new_fl = 0; 659 660 if (fileattr_has_fsx(fa)) 661 return -EOPNOTSUPP; 662 663 /* don't silently ignore unsupported ext2 flags */ 664 if (fa->flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL)) 665 return -EOPNOTSUPP; 666 667 if (fa->flags & FS_IMMUTABLE_FL) 668 new_fl |= S_IMMUTABLE; 669 670 if (fa->flags & FS_APPEND_FL) 671 new_fl |= S_APPEND; 672 673 inode_set_flags(inode, new_fl, S_IMMUTABLE | S_APPEND); 674 675 if (fa->flags & FS_NODUMP_FL) 676 hip->userflags |= HFSPLUS_FLG_NODUMP; 677 else 678 hip->userflags &= ~HFSPLUS_FLG_NODUMP; 679 680 inode->i_ctime = current_time(inode); 681 mark_inode_dirty(inode); 682 683 return 0; 684 } 685