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 26static int hfsplus_read_folio(struct file *file, struct folio *folio) 27{ 28 return block_read_full_folio(folio, hfsplus_get_block); 29} 30 31static 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 41int hfsplus_write_begin(struct file *file, struct address_space *mapping, 42 loff_t pos, unsigned len, struct page **pagep, void **fsdata) 43{ 44 int ret; 45 46 *pagep = NULL; 47 ret = cont_write_begin(file, mapping, pos, len, pagep, fsdata, 48 hfsplus_get_block, 49 &HFSPLUS_I(mapping->host)->phys_size); 50 if (unlikely(ret)) 51 hfsplus_write_failed(mapping, pos + len); 52 53 return ret; 54} 55 56static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block) 57{ 58 return generic_block_bmap(mapping, block, hfsplus_get_block); 59} 60 61static bool hfsplus_release_folio(struct folio *folio, gfp_t mask) 62{ 63 struct inode *inode = folio->mapping->host; 64 struct super_block *sb = inode->i_sb; 65 struct hfs_btree *tree; 66 struct hfs_bnode *node; 67 u32 nidx; 68 int i; 69 bool res = true; 70 71 switch (inode->i_ino) { 72 case HFSPLUS_EXT_CNID: 73 tree = HFSPLUS_SB(sb)->ext_tree; 74 break; 75 case HFSPLUS_CAT_CNID: 76 tree = HFSPLUS_SB(sb)->cat_tree; 77 break; 78 case HFSPLUS_ATTR_CNID: 79 tree = HFSPLUS_SB(sb)->attr_tree; 80 break; 81 default: 82 BUG(); 83 return false; 84 } 85 if (!tree) 86 return false; 87 if (tree->node_size >= PAGE_SIZE) { 88 nidx = folio->index >> 89 (tree->node_size_shift - PAGE_SHIFT); 90 spin_lock(&tree->hash_lock); 91 node = hfs_bnode_findhash(tree, nidx); 92 if (!node) 93 ; 94 else if (atomic_read(&node->refcnt)) 95 res = false; 96 if (res && node) { 97 hfs_bnode_unhash(node); 98 hfs_bnode_free(node); 99 } 100 spin_unlock(&tree->hash_lock); 101 } else { 102 nidx = folio->index << 103 (PAGE_SHIFT - tree->node_size_shift); 104 i = 1 << (PAGE_SHIFT - tree->node_size_shift); 105 spin_lock(&tree->hash_lock); 106 do { 107 node = hfs_bnode_findhash(tree, nidx++); 108 if (!node) 109 continue; 110 if (atomic_read(&node->refcnt)) { 111 res = false; 112 break; 113 } 114 hfs_bnode_unhash(node); 115 hfs_bnode_free(node); 116 } while (--i && nidx < tree->node_count); 117 spin_unlock(&tree->hash_lock); 118 } 119 return res ? try_to_free_buffers(folio) : false; 120} 121 122static ssize_t hfsplus_direct_IO(struct kiocb *iocb, struct iov_iter *iter) 123{ 124 struct file *file = iocb->ki_filp; 125 struct address_space *mapping = file->f_mapping; 126 struct inode *inode = mapping->host; 127 size_t count = iov_iter_count(iter); 128 ssize_t ret; 129 130 ret = blockdev_direct_IO(iocb, inode, iter, hfsplus_get_block); 131 132 /* 133 * In case of error extending write may have instantiated a few 134 * blocks outside i_size. Trim these off again. 135 */ 136 if (unlikely(iov_iter_rw(iter) == WRITE && ret < 0)) { 137 loff_t isize = i_size_read(inode); 138 loff_t end = iocb->ki_pos + count; 139 140 if (end > isize) 141 hfsplus_write_failed(mapping, end); 142 } 143 144 return ret; 145} 146 147static int hfsplus_writepages(struct address_space *mapping, 148 struct writeback_control *wbc) 149{ 150 return mpage_writepages(mapping, wbc, hfsplus_get_block); 151} 152 153const struct address_space_operations hfsplus_btree_aops = { 154 .dirty_folio = block_dirty_folio, 155 .invalidate_folio = block_invalidate_folio, 156 .read_folio = hfsplus_read_folio, 157 .writepages = hfsplus_writepages, 158 .write_begin = hfsplus_write_begin, 159 .write_end = generic_write_end, 160 .migrate_folio = buffer_migrate_folio, 161 .bmap = hfsplus_bmap, 162 .release_folio = hfsplus_release_folio, 163}; 164 165const struct address_space_operations hfsplus_aops = { 166 .dirty_folio = block_dirty_folio, 167 .invalidate_folio = block_invalidate_folio, 168 .read_folio = hfsplus_read_folio, 169 .write_begin = hfsplus_write_begin, 170 .write_end = generic_write_end, 171 .bmap = hfsplus_bmap, 172 .direct_IO = hfsplus_direct_IO, 173 .writepages = hfsplus_writepages, 174 .migrate_folio = buffer_migrate_folio, 175}; 176 177const struct dentry_operations hfsplus_dentry_operations = { 178 .d_hash = hfsplus_hash_dentry, 179 .d_compare = hfsplus_compare_dentry, 180}; 181 182static 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 ((test_bit(HFSPLUS_SB_UID, &sbi->flags)) || (!i_uid_read(inode) && !mode)) 192 inode->i_uid = sbi->uid; 193 194 i_gid_write(inode, be32_to_cpu(perms->group)); 195 if ((test_bit(HFSPLUS_SB_GID, &sbi->flags)) || (!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 216static 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 226static 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 245static int hfsplus_setattr(struct mnt_idmap *idmap, 246 struct dentry *dentry, struct iattr *attr) 247{ 248 struct inode *inode = d_inode(dentry); 249 int error; 250 251 error = setattr_prepare(&nop_mnt_idmap, 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_set_mtime_to_ts(inode, inode_set_ctime_current(inode)); 267 } 268 269 setattr_copy(&nop_mnt_idmap, inode, attr); 270 mark_inode_dirty(inode); 271 272 return 0; 273} 274 275int hfsplus_getattr(struct mnt_idmap *idmap, 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 (request_mask & STATX_BTIME) { 283 stat->result_mask |= STATX_BTIME; 284 stat->btime = hfsp_mt2ut(hip->create_date); 285 } 286 287 if (inode->i_flags & S_APPEND) 288 stat->attributes |= STATX_ATTR_APPEND; 289 if (inode->i_flags & S_IMMUTABLE) 290 stat->attributes |= STATX_ATTR_IMMUTABLE; 291 if (hip->userflags & HFSPLUS_FLG_NODUMP) 292 stat->attributes |= STATX_ATTR_NODUMP; 293 294 stat->attributes_mask |= STATX_ATTR_APPEND | STATX_ATTR_IMMUTABLE | 295 STATX_ATTR_NODUMP; 296 297 generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); 298 return 0; 299} 300 301int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, 302 int datasync) 303{ 304 struct inode *inode = file->f_mapping->host; 305 struct hfsplus_inode_info *hip = HFSPLUS_I(inode); 306 struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); 307 int error = 0, error2; 308 309 error = file_write_and_wait_range(file, start, end); 310 if (error) 311 return error; 312 inode_lock(inode); 313 314 /* 315 * Sync inode metadata into the catalog and extent trees. 316 */ 317 sync_inode_metadata(inode, 1); 318 319 /* 320 * And explicitly write out the btrees. 321 */ 322 if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags)) 323 error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping); 324 325 if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) { 326 error2 = 327 filemap_write_and_wait(sbi->ext_tree->inode->i_mapping); 328 if (!error) 329 error = error2; 330 } 331 332 if (test_and_clear_bit(HFSPLUS_I_ATTR_DIRTY, &hip->flags)) { 333 if (sbi->attr_tree) { 334 error2 = 335 filemap_write_and_wait( 336 sbi->attr_tree->inode->i_mapping); 337 if (!error) 338 error = error2; 339 } else { 340 pr_err("sync non-existent attributes tree\n"); 341 } 342 } 343 344 if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) { 345 error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping); 346 if (!error) 347 error = error2; 348 } 349 350 if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags)) 351 blkdev_issue_flush(inode->i_sb->s_bdev); 352 353 inode_unlock(inode); 354 355 return error; 356} 357 358static const struct inode_operations hfsplus_file_inode_operations = { 359 .setattr = hfsplus_setattr, 360 .getattr = hfsplus_getattr, 361 .listxattr = hfsplus_listxattr, 362 .fileattr_get = hfsplus_fileattr_get, 363 .fileattr_set = hfsplus_fileattr_set, 364}; 365 366static const struct file_operations hfsplus_file_operations = { 367 .llseek = generic_file_llseek, 368 .read_iter = generic_file_read_iter, 369 .write_iter = generic_file_write_iter, 370 .mmap = generic_file_mmap, 371 .splice_read = filemap_splice_read, 372 .fsync = hfsplus_file_fsync, 373 .open = hfsplus_file_open, 374 .release = hfsplus_file_release, 375 .unlocked_ioctl = hfsplus_ioctl, 376}; 377 378struct inode *hfsplus_new_inode(struct super_block *sb, struct inode *dir, 379 umode_t mode) 380{ 381 struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); 382 struct inode *inode = new_inode(sb); 383 struct hfsplus_inode_info *hip; 384 385 if (!inode) 386 return NULL; 387 388 inode->i_ino = sbi->next_cnid++; 389 inode_init_owner(&nop_mnt_idmap, inode, dir, mode); 390 set_nlink(inode, 1); 391 simple_inode_init_ts(inode); 392 393 hip = HFSPLUS_I(inode); 394 INIT_LIST_HEAD(&hip->open_dir_list); 395 spin_lock_init(&hip->open_dir_lock); 396 mutex_init(&hip->extents_lock); 397 atomic_set(&hip->opencnt, 0); 398 hip->extent_state = 0; 399 hip->flags = 0; 400 hip->userflags = 0; 401 hip->subfolders = 0; 402 memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec)); 403 memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); 404 hip->alloc_blocks = 0; 405 hip->first_blocks = 0; 406 hip->cached_start = 0; 407 hip->cached_blocks = 0; 408 hip->phys_size = 0; 409 hip->fs_blocks = 0; 410 hip->rsrc_inode = NULL; 411 if (S_ISDIR(inode->i_mode)) { 412 inode->i_size = 2; 413 sbi->folder_count++; 414 inode->i_op = &hfsplus_dir_inode_operations; 415 inode->i_fop = &hfsplus_dir_operations; 416 } else if (S_ISREG(inode->i_mode)) { 417 sbi->file_count++; 418 inode->i_op = &hfsplus_file_inode_operations; 419 inode->i_fop = &hfsplus_file_operations; 420 inode->i_mapping->a_ops = &hfsplus_aops; 421 hip->clump_blocks = sbi->data_clump_blocks; 422 } else if (S_ISLNK(inode->i_mode)) { 423 sbi->file_count++; 424 inode->i_op = &page_symlink_inode_operations; 425 inode_nohighmem(inode); 426 inode->i_mapping->a_ops = &hfsplus_aops; 427 hip->clump_blocks = 1; 428 } else 429 sbi->file_count++; 430 insert_inode_hash(inode); 431 mark_inode_dirty(inode); 432 hfsplus_mark_mdb_dirty(sb); 433 434 return inode; 435} 436 437void hfsplus_delete_inode(struct inode *inode) 438{ 439 struct super_block *sb = inode->i_sb; 440 441 if (S_ISDIR(inode->i_mode)) { 442 HFSPLUS_SB(sb)->folder_count--; 443 hfsplus_mark_mdb_dirty(sb); 444 return; 445 } 446 HFSPLUS_SB(sb)->file_count--; 447 if (S_ISREG(inode->i_mode)) { 448 if (!inode->i_nlink) { 449 inode->i_size = 0; 450 hfsplus_file_truncate(inode); 451 } 452 } else if (S_ISLNK(inode->i_mode)) { 453 inode->i_size = 0; 454 hfsplus_file_truncate(inode); 455 } 456 hfsplus_mark_mdb_dirty(sb); 457} 458 459void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork) 460{ 461 struct super_block *sb = inode->i_sb; 462 struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); 463 struct hfsplus_inode_info *hip = HFSPLUS_I(inode); 464 u32 count; 465 int i; 466 467 memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec)); 468 for (count = 0, i = 0; i < 8; i++) 469 count += be32_to_cpu(fork->extents[i].block_count); 470 hip->first_blocks = count; 471 memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); 472 hip->cached_start = 0; 473 hip->cached_blocks = 0; 474 475 hip->alloc_blocks = be32_to_cpu(fork->total_blocks); 476 hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size); 477 hip->fs_blocks = 478 (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; 479 inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits); 480 hip->clump_blocks = 481 be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift; 482 if (!hip->clump_blocks) { 483 hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ? 484 sbi->rsrc_clump_blocks : 485 sbi->data_clump_blocks; 486 } 487} 488 489void hfsplus_inode_write_fork(struct inode *inode, 490 struct hfsplus_fork_raw *fork) 491{ 492 memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents, 493 sizeof(hfsplus_extent_rec)); 494 fork->total_size = cpu_to_be64(inode->i_size); 495 fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks); 496} 497 498int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) 499{ 500 hfsplus_cat_entry entry; 501 int res = 0; 502 u16 type; 503 504 type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset); 505 506 HFSPLUS_I(inode)->linkid = 0; 507 if (type == HFSPLUS_FOLDER) { 508 struct hfsplus_cat_folder *folder = &entry.folder; 509 510 if (fd->entrylength < sizeof(struct hfsplus_cat_folder)) { 511 pr_err("bad catalog folder entry\n"); 512 res = -EIO; 513 goto out; 514 } 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_set_atime_to_ts(inode, hfsp_mt2ut(folder->access_date)); 521 inode_set_mtime_to_ts(inode, 522 hfsp_mt2ut(folder->content_mod_date)); 523 inode_set_ctime_to_ts(inode, 524 hfsp_mt2ut(folder->attribute_mod_date)); 525 HFSPLUS_I(inode)->create_date = folder->create_date; 526 HFSPLUS_I(inode)->fs_blocks = 0; 527 if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { 528 HFSPLUS_I(inode)->subfolders = 529 be32_to_cpu(folder->subfolders); 530 } 531 inode->i_op = &hfsplus_dir_inode_operations; 532 inode->i_fop = &hfsplus_dir_operations; 533 } else if (type == HFSPLUS_FILE) { 534 struct hfsplus_cat_file *file = &entry.file; 535 536 if (fd->entrylength < sizeof(struct hfsplus_cat_file)) { 537 pr_err("bad catalog file entry\n"); 538 res = -EIO; 539 goto out; 540 } 541 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, 542 sizeof(struct hfsplus_cat_file)); 543 544 hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ? 545 &file->rsrc_fork : &file->data_fork); 546 hfsplus_get_perms(inode, &file->permissions, 0); 547 set_nlink(inode, 1); 548 if (S_ISREG(inode->i_mode)) { 549 if (file->permissions.dev) 550 set_nlink(inode, 551 be32_to_cpu(file->permissions.dev)); 552 inode->i_op = &hfsplus_file_inode_operations; 553 inode->i_fop = &hfsplus_file_operations; 554 inode->i_mapping->a_ops = &hfsplus_aops; 555 } else if (S_ISLNK(inode->i_mode)) { 556 inode->i_op = &page_symlink_inode_operations; 557 inode_nohighmem(inode); 558 inode->i_mapping->a_ops = &hfsplus_aops; 559 } else { 560 init_special_inode(inode, inode->i_mode, 561 be32_to_cpu(file->permissions.dev)); 562 } 563 inode_set_atime_to_ts(inode, hfsp_mt2ut(file->access_date)); 564 inode_set_mtime_to_ts(inode, 565 hfsp_mt2ut(file->content_mod_date)); 566 inode_set_ctime_to_ts(inode, 567 hfsp_mt2ut(file->attribute_mod_date)); 568 HFSPLUS_I(inode)->create_date = file->create_date; 569 } else { 570 pr_err("bad catalog entry used to create inode\n"); 571 res = -EIO; 572 } 573out: 574 return res; 575} 576 577int hfsplus_cat_write_inode(struct inode *inode) 578{ 579 struct inode *main_inode = inode; 580 struct hfs_find_data fd; 581 hfsplus_cat_entry entry; 582 int res = 0; 583 584 if (HFSPLUS_IS_RSRC(inode)) 585 main_inode = HFSPLUS_I(inode)->rsrc_inode; 586 587 if (!main_inode->i_nlink) 588 return 0; 589 590 if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd)) 591 /* panic? */ 592 return -EIO; 593 594 if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd)) 595 /* panic? */ 596 goto out; 597 598 if (S_ISDIR(main_inode->i_mode)) { 599 struct hfsplus_cat_folder *folder = &entry.folder; 600 601 if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) { 602 pr_err("bad catalog folder entry\n"); 603 res = -EIO; 604 goto out; 605 } 606 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, 607 sizeof(struct hfsplus_cat_folder)); 608 /* simple node checks? */ 609 hfsplus_cat_set_perms(inode, &folder->permissions); 610 folder->access_date = hfsp_ut2mt(inode_get_atime(inode)); 611 folder->content_mod_date = hfsp_ut2mt(inode_get_mtime(inode)); 612 folder->attribute_mod_date = hfsp_ut2mt(inode_get_ctime(inode)); 613 folder->valence = cpu_to_be32(inode->i_size - 2); 614 if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { 615 folder->subfolders = 616 cpu_to_be32(HFSPLUS_I(inode)->subfolders); 617 } 618 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, 619 sizeof(struct hfsplus_cat_folder)); 620 } else if (HFSPLUS_IS_RSRC(inode)) { 621 struct hfsplus_cat_file *file = &entry.file; 622 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, 623 sizeof(struct hfsplus_cat_file)); 624 hfsplus_inode_write_fork(inode, &file->rsrc_fork); 625 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, 626 sizeof(struct hfsplus_cat_file)); 627 } else { 628 struct hfsplus_cat_file *file = &entry.file; 629 630 if (fd.entrylength < sizeof(struct hfsplus_cat_file)) { 631 pr_err("bad catalog file entry\n"); 632 res = -EIO; 633 goto out; 634 } 635 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, 636 sizeof(struct hfsplus_cat_file)); 637 hfsplus_inode_write_fork(inode, &file->data_fork); 638 hfsplus_cat_set_perms(inode, &file->permissions); 639 if (HFSPLUS_FLG_IMMUTABLE & 640 (file->permissions.rootflags | 641 file->permissions.userflags)) 642 file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED); 643 else 644 file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED); 645 file->access_date = hfsp_ut2mt(inode_get_atime(inode)); 646 file->content_mod_date = hfsp_ut2mt(inode_get_mtime(inode)); 647 file->attribute_mod_date = hfsp_ut2mt(inode_get_ctime(inode)); 648 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, 649 sizeof(struct hfsplus_cat_file)); 650 } 651 652 set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags); 653out: 654 hfs_find_exit(&fd); 655 return res; 656} 657 658int hfsplus_fileattr_get(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 flags = 0; 663 664 if (inode->i_flags & S_IMMUTABLE) 665 flags |= FS_IMMUTABLE_FL; 666 if (inode->i_flags & S_APPEND) 667 flags |= FS_APPEND_FL; 668 if (hip->userflags & HFSPLUS_FLG_NODUMP) 669 flags |= FS_NODUMP_FL; 670 671 fileattr_fill_flags(fa, flags); 672 673 return 0; 674} 675 676int hfsplus_fileattr_set(struct mnt_idmap *idmap, 677 struct dentry *dentry, struct fileattr *fa) 678{ 679 struct inode *inode = d_inode(dentry); 680 struct hfsplus_inode_info *hip = HFSPLUS_I(inode); 681 unsigned int new_fl = 0; 682 683 if (fileattr_has_fsx(fa)) 684 return -EOPNOTSUPP; 685 686 /* don't silently ignore unsupported ext2 flags */ 687 if (fa->flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL)) 688 return -EOPNOTSUPP; 689 690 if (fa->flags & FS_IMMUTABLE_FL) 691 new_fl |= S_IMMUTABLE; 692 693 if (fa->flags & FS_APPEND_FL) 694 new_fl |= S_APPEND; 695 696 inode_set_flags(inode, new_fl, S_IMMUTABLE | S_APPEND); 697 698 if (fa->flags & FS_NODUMP_FL) 699 hip->userflags |= HFSPLUS_FLG_NODUMP; 700 else 701 hip->userflags &= ~HFSPLUS_FLG_NODUMP; 702 703 inode_set_ctime_current(inode); 704 mark_inode_dirty(inode); 705 706 return 0; 707} 708