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 .set_page_dirty = __set_page_dirty_buffers, 160 .readpage = hfsplus_readpage, 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 .set_page_dirty = __set_page_dirty_buffers, 170 .readpage = hfsplus_readpage, 171 .writepage = hfsplus_writepage, 172 .write_begin = hfsplus_write_begin, 173 .write_end = generic_write_end, 174 .bmap = hfsplus_bmap, 175 .direct_IO = hfsplus_direct_IO, 176 .writepages = hfsplus_writepages, 177 }; 178 179 const struct dentry_operations hfsplus_dentry_operations = { 180 .d_hash = hfsplus_hash_dentry, 181 .d_compare = hfsplus_compare_dentry, 182 }; 183 184 static void hfsplus_get_perms(struct inode *inode, 185 struct hfsplus_perm *perms, int dir) 186 { 187 struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); 188 u16 mode; 189 190 mode = be16_to_cpu(perms->mode); 191 192 i_uid_write(inode, be32_to_cpu(perms->owner)); 193 if (!i_uid_read(inode) && !mode) 194 inode->i_uid = sbi->uid; 195 196 i_gid_write(inode, be32_to_cpu(perms->group)); 197 if (!i_gid_read(inode) && !mode) 198 inode->i_gid = sbi->gid; 199 200 if (dir) { 201 mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask)); 202 mode |= S_IFDIR; 203 } else if (!mode) 204 mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask)); 205 inode->i_mode = mode; 206 207 HFSPLUS_I(inode)->userflags = perms->userflags; 208 if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE) 209 inode->i_flags |= S_IMMUTABLE; 210 else 211 inode->i_flags &= ~S_IMMUTABLE; 212 if (perms->rootflags & HFSPLUS_FLG_APPEND) 213 inode->i_flags |= S_APPEND; 214 else 215 inode->i_flags &= ~S_APPEND; 216 } 217 218 static int hfsplus_file_open(struct inode *inode, struct file *file) 219 { 220 if (HFSPLUS_IS_RSRC(inode)) 221 inode = HFSPLUS_I(inode)->rsrc_inode; 222 if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) 223 return -EOVERFLOW; 224 atomic_inc(&HFSPLUS_I(inode)->opencnt); 225 return 0; 226 } 227 228 static int hfsplus_file_release(struct inode *inode, struct file *file) 229 { 230 struct super_block *sb = inode->i_sb; 231 232 if (HFSPLUS_IS_RSRC(inode)) 233 inode = HFSPLUS_I(inode)->rsrc_inode; 234 if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) { 235 inode_lock(inode); 236 hfsplus_file_truncate(inode); 237 if (inode->i_flags & S_DEAD) { 238 hfsplus_delete_cat(inode->i_ino, 239 HFSPLUS_SB(sb)->hidden_dir, NULL); 240 hfsplus_delete_inode(inode); 241 } 242 inode_unlock(inode); 243 } 244 return 0; 245 } 246 247 static int hfsplus_setattr(struct user_namespace *mnt_userns, 248 struct dentry *dentry, struct iattr *attr) 249 { 250 struct inode *inode = d_inode(dentry); 251 int error; 252 253 error = setattr_prepare(&init_user_ns, dentry, attr); 254 if (error) 255 return error; 256 257 if ((attr->ia_valid & ATTR_SIZE) && 258 attr->ia_size != i_size_read(inode)) { 259 inode_dio_wait(inode); 260 if (attr->ia_size > inode->i_size) { 261 error = generic_cont_expand_simple(inode, 262 attr->ia_size); 263 if (error) 264 return error; 265 } 266 truncate_setsize(inode, attr->ia_size); 267 hfsplus_file_truncate(inode); 268 inode->i_mtime = inode->i_ctime = current_time(inode); 269 } 270 271 setattr_copy(&init_user_ns, inode, attr); 272 mark_inode_dirty(inode); 273 274 return 0; 275 } 276 277 int hfsplus_getattr(struct user_namespace *mnt_userns, const struct path *path, 278 struct kstat *stat, u32 request_mask, 279 unsigned int query_flags) 280 { 281 struct inode *inode = d_inode(path->dentry); 282 struct hfsplus_inode_info *hip = HFSPLUS_I(inode); 283 284 if (inode->i_flags & S_APPEND) 285 stat->attributes |= STATX_ATTR_APPEND; 286 if (inode->i_flags & S_IMMUTABLE) 287 stat->attributes |= STATX_ATTR_IMMUTABLE; 288 if (hip->userflags & HFSPLUS_FLG_NODUMP) 289 stat->attributes |= STATX_ATTR_NODUMP; 290 291 stat->attributes_mask |= STATX_ATTR_APPEND | STATX_ATTR_IMMUTABLE | 292 STATX_ATTR_NODUMP; 293 294 generic_fillattr(&init_user_ns, inode, stat); 295 return 0; 296 } 297 298 int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, 299 int datasync) 300 { 301 struct inode *inode = file->f_mapping->host; 302 struct hfsplus_inode_info *hip = HFSPLUS_I(inode); 303 struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); 304 int error = 0, error2; 305 306 error = file_write_and_wait_range(file, start, end); 307 if (error) 308 return error; 309 inode_lock(inode); 310 311 /* 312 * Sync inode metadata into the catalog and extent trees. 313 */ 314 sync_inode_metadata(inode, 1); 315 316 /* 317 * And explicitly write out the btrees. 318 */ 319 if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags)) 320 error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping); 321 322 if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) { 323 error2 = 324 filemap_write_and_wait(sbi->ext_tree->inode->i_mapping); 325 if (!error) 326 error = error2; 327 } 328 329 if (test_and_clear_bit(HFSPLUS_I_ATTR_DIRTY, &hip->flags)) { 330 if (sbi->attr_tree) { 331 error2 = 332 filemap_write_and_wait( 333 sbi->attr_tree->inode->i_mapping); 334 if (!error) 335 error = error2; 336 } else { 337 pr_err("sync non-existent attributes tree\n"); 338 } 339 } 340 341 if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) { 342 error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping); 343 if (!error) 344 error = error2; 345 } 346 347 if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags)) 348 blkdev_issue_flush(inode->i_sb->s_bdev); 349 350 inode_unlock(inode); 351 352 return error; 353 } 354 355 static const struct inode_operations hfsplus_file_inode_operations = { 356 .setattr = hfsplus_setattr, 357 .getattr = hfsplus_getattr, 358 .listxattr = hfsplus_listxattr, 359 .fileattr_get = hfsplus_fileattr_get, 360 .fileattr_set = hfsplus_fileattr_set, 361 }; 362 363 static const struct file_operations hfsplus_file_operations = { 364 .llseek = generic_file_llseek, 365 .read_iter = generic_file_read_iter, 366 .write_iter = generic_file_write_iter, 367 .mmap = generic_file_mmap, 368 .splice_read = generic_file_splice_read, 369 .fsync = hfsplus_file_fsync, 370 .open = hfsplus_file_open, 371 .release = hfsplus_file_release, 372 .unlocked_ioctl = hfsplus_ioctl, 373 }; 374 375 struct inode *hfsplus_new_inode(struct super_block *sb, struct inode *dir, 376 umode_t mode) 377 { 378 struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); 379 struct inode *inode = new_inode(sb); 380 struct hfsplus_inode_info *hip; 381 382 if (!inode) 383 return NULL; 384 385 inode->i_ino = sbi->next_cnid++; 386 inode_init_owner(&init_user_ns, inode, dir, mode); 387 set_nlink(inode, 1); 388 inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); 389 390 hip = HFSPLUS_I(inode); 391 INIT_LIST_HEAD(&hip->open_dir_list); 392 spin_lock_init(&hip->open_dir_lock); 393 mutex_init(&hip->extents_lock); 394 atomic_set(&hip->opencnt, 0); 395 hip->extent_state = 0; 396 hip->flags = 0; 397 hip->userflags = 0; 398 hip->subfolders = 0; 399 memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec)); 400 memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); 401 hip->alloc_blocks = 0; 402 hip->first_blocks = 0; 403 hip->cached_start = 0; 404 hip->cached_blocks = 0; 405 hip->phys_size = 0; 406 hip->fs_blocks = 0; 407 hip->rsrc_inode = NULL; 408 if (S_ISDIR(inode->i_mode)) { 409 inode->i_size = 2; 410 sbi->folder_count++; 411 inode->i_op = &hfsplus_dir_inode_operations; 412 inode->i_fop = &hfsplus_dir_operations; 413 } else if (S_ISREG(inode->i_mode)) { 414 sbi->file_count++; 415 inode->i_op = &hfsplus_file_inode_operations; 416 inode->i_fop = &hfsplus_file_operations; 417 inode->i_mapping->a_ops = &hfsplus_aops; 418 hip->clump_blocks = sbi->data_clump_blocks; 419 } else if (S_ISLNK(inode->i_mode)) { 420 sbi->file_count++; 421 inode->i_op = &page_symlink_inode_operations; 422 inode_nohighmem(inode); 423 inode->i_mapping->a_ops = &hfsplus_aops; 424 hip->clump_blocks = 1; 425 } else 426 sbi->file_count++; 427 insert_inode_hash(inode); 428 mark_inode_dirty(inode); 429 hfsplus_mark_mdb_dirty(sb); 430 431 return inode; 432 } 433 434 void hfsplus_delete_inode(struct inode *inode) 435 { 436 struct super_block *sb = inode->i_sb; 437 438 if (S_ISDIR(inode->i_mode)) { 439 HFSPLUS_SB(sb)->folder_count--; 440 hfsplus_mark_mdb_dirty(sb); 441 return; 442 } 443 HFSPLUS_SB(sb)->file_count--; 444 if (S_ISREG(inode->i_mode)) { 445 if (!inode->i_nlink) { 446 inode->i_size = 0; 447 hfsplus_file_truncate(inode); 448 } 449 } else if (S_ISLNK(inode->i_mode)) { 450 inode->i_size = 0; 451 hfsplus_file_truncate(inode); 452 } 453 hfsplus_mark_mdb_dirty(sb); 454 } 455 456 void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork) 457 { 458 struct super_block *sb = inode->i_sb; 459 struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); 460 struct hfsplus_inode_info *hip = HFSPLUS_I(inode); 461 u32 count; 462 int i; 463 464 memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec)); 465 for (count = 0, i = 0; i < 8; i++) 466 count += be32_to_cpu(fork->extents[i].block_count); 467 hip->first_blocks = count; 468 memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); 469 hip->cached_start = 0; 470 hip->cached_blocks = 0; 471 472 hip->alloc_blocks = be32_to_cpu(fork->total_blocks); 473 hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size); 474 hip->fs_blocks = 475 (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; 476 inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits); 477 hip->clump_blocks = 478 be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift; 479 if (!hip->clump_blocks) { 480 hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ? 481 sbi->rsrc_clump_blocks : 482 sbi->data_clump_blocks; 483 } 484 } 485 486 void hfsplus_inode_write_fork(struct inode *inode, 487 struct hfsplus_fork_raw *fork) 488 { 489 memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents, 490 sizeof(hfsplus_extent_rec)); 491 fork->total_size = cpu_to_be64(inode->i_size); 492 fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks); 493 } 494 495 int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) 496 { 497 hfsplus_cat_entry entry; 498 int res = 0; 499 u16 type; 500 501 type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset); 502 503 HFSPLUS_I(inode)->linkid = 0; 504 if (type == HFSPLUS_FOLDER) { 505 struct hfsplus_cat_folder *folder = &entry.folder; 506 507 if (fd->entrylength < sizeof(struct hfsplus_cat_folder)) 508 /* panic? */; 509 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, 510 sizeof(struct hfsplus_cat_folder)); 511 hfsplus_get_perms(inode, &folder->permissions, 1); 512 set_nlink(inode, 1); 513 inode->i_size = 2 + be32_to_cpu(folder->valence); 514 inode->i_atime = hfsp_mt2ut(folder->access_date); 515 inode->i_mtime = hfsp_mt2ut(folder->content_mod_date); 516 inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date); 517 HFSPLUS_I(inode)->create_date = folder->create_date; 518 HFSPLUS_I(inode)->fs_blocks = 0; 519 if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { 520 HFSPLUS_I(inode)->subfolders = 521 be32_to_cpu(folder->subfolders); 522 } 523 inode->i_op = &hfsplus_dir_inode_operations; 524 inode->i_fop = &hfsplus_dir_operations; 525 } else if (type == HFSPLUS_FILE) { 526 struct hfsplus_cat_file *file = &entry.file; 527 528 if (fd->entrylength < sizeof(struct hfsplus_cat_file)) 529 /* panic? */; 530 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, 531 sizeof(struct hfsplus_cat_file)); 532 533 hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ? 534 &file->rsrc_fork : &file->data_fork); 535 hfsplus_get_perms(inode, &file->permissions, 0); 536 set_nlink(inode, 1); 537 if (S_ISREG(inode->i_mode)) { 538 if (file->permissions.dev) 539 set_nlink(inode, 540 be32_to_cpu(file->permissions.dev)); 541 inode->i_op = &hfsplus_file_inode_operations; 542 inode->i_fop = &hfsplus_file_operations; 543 inode->i_mapping->a_ops = &hfsplus_aops; 544 } else if (S_ISLNK(inode->i_mode)) { 545 inode->i_op = &page_symlink_inode_operations; 546 inode_nohighmem(inode); 547 inode->i_mapping->a_ops = &hfsplus_aops; 548 } else { 549 init_special_inode(inode, inode->i_mode, 550 be32_to_cpu(file->permissions.dev)); 551 } 552 inode->i_atime = hfsp_mt2ut(file->access_date); 553 inode->i_mtime = hfsp_mt2ut(file->content_mod_date); 554 inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date); 555 HFSPLUS_I(inode)->create_date = file->create_date; 556 } else { 557 pr_err("bad catalog entry used to create inode\n"); 558 res = -EIO; 559 } 560 return res; 561 } 562 563 int hfsplus_cat_write_inode(struct inode *inode) 564 { 565 struct inode *main_inode = inode; 566 struct hfs_find_data fd; 567 hfsplus_cat_entry entry; 568 569 if (HFSPLUS_IS_RSRC(inode)) 570 main_inode = HFSPLUS_I(inode)->rsrc_inode; 571 572 if (!main_inode->i_nlink) 573 return 0; 574 575 if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd)) 576 /* panic? */ 577 return -EIO; 578 579 if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd)) 580 /* panic? */ 581 goto out; 582 583 if (S_ISDIR(main_inode->i_mode)) { 584 struct hfsplus_cat_folder *folder = &entry.folder; 585 586 if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) 587 /* panic? */; 588 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, 589 sizeof(struct hfsplus_cat_folder)); 590 /* simple node checks? */ 591 hfsplus_cat_set_perms(inode, &folder->permissions); 592 folder->access_date = hfsp_ut2mt(inode->i_atime); 593 folder->content_mod_date = hfsp_ut2mt(inode->i_mtime); 594 folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); 595 folder->valence = cpu_to_be32(inode->i_size - 2); 596 if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { 597 folder->subfolders = 598 cpu_to_be32(HFSPLUS_I(inode)->subfolders); 599 } 600 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, 601 sizeof(struct hfsplus_cat_folder)); 602 } else if (HFSPLUS_IS_RSRC(inode)) { 603 struct hfsplus_cat_file *file = &entry.file; 604 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, 605 sizeof(struct hfsplus_cat_file)); 606 hfsplus_inode_write_fork(inode, &file->rsrc_fork); 607 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, 608 sizeof(struct hfsplus_cat_file)); 609 } else { 610 struct hfsplus_cat_file *file = &entry.file; 611 612 if (fd.entrylength < sizeof(struct hfsplus_cat_file)) 613 /* panic? */; 614 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, 615 sizeof(struct hfsplus_cat_file)); 616 hfsplus_inode_write_fork(inode, &file->data_fork); 617 hfsplus_cat_set_perms(inode, &file->permissions); 618 if (HFSPLUS_FLG_IMMUTABLE & 619 (file->permissions.rootflags | 620 file->permissions.userflags)) 621 file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED); 622 else 623 file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED); 624 file->access_date = hfsp_ut2mt(inode->i_atime); 625 file->content_mod_date = hfsp_ut2mt(inode->i_mtime); 626 file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); 627 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, 628 sizeof(struct hfsplus_cat_file)); 629 } 630 631 set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags); 632 out: 633 hfs_find_exit(&fd); 634 return 0; 635 } 636 637 int hfsplus_fileattr_get(struct dentry *dentry, struct fileattr *fa) 638 { 639 struct inode *inode = d_inode(dentry); 640 struct hfsplus_inode_info *hip = HFSPLUS_I(inode); 641 unsigned int flags = 0; 642 643 if (inode->i_flags & S_IMMUTABLE) 644 flags |= FS_IMMUTABLE_FL; 645 if (inode->i_flags & S_APPEND) 646 flags |= FS_APPEND_FL; 647 if (hip->userflags & HFSPLUS_FLG_NODUMP) 648 flags |= FS_NODUMP_FL; 649 650 fileattr_fill_flags(fa, flags); 651 652 return 0; 653 } 654 655 int hfsplus_fileattr_set(struct user_namespace *mnt_userns, 656 struct dentry *dentry, struct fileattr *fa) 657 { 658 struct inode *inode = d_inode(dentry); 659 struct hfsplus_inode_info *hip = HFSPLUS_I(inode); 660 unsigned int new_fl = 0; 661 662 if (fileattr_has_fsx(fa)) 663 return -EOPNOTSUPP; 664 665 /* don't silently ignore unsupported ext2 flags */ 666 if (fa->flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL)) 667 return -EOPNOTSUPP; 668 669 if (fa->flags & FS_IMMUTABLE_FL) 670 new_fl |= S_IMMUTABLE; 671 672 if (fa->flags & FS_APPEND_FL) 673 new_fl |= S_APPEND; 674 675 inode_set_flags(inode, new_fl, S_IMMUTABLE | S_APPEND); 676 677 if (fa->flags & FS_NODUMP_FL) 678 hip->userflags |= HFSPLUS_FLG_NODUMP; 679 else 680 hip->userflags &= ~HFSPLUS_FLG_NODUMP; 681 682 inode->i_ctime = current_time(inode); 683 mark_inode_dirty(inode); 684 685 return 0; 686 } 687