fs/hfsplus/inode.c

   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
  21 #include "hfsplus_fs.h"
  22 #include "hfsplus_raw.h"
  23 #include "xattr.h"
  24 #include "acl.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 dentry *dentry, struct iattr *attr)
 246 {
 247         struct inode *inode = d_inode(dentry);
 248         int error;
 249
 250         error = setattr_prepare(dentry, attr);
 251         if (error)
 252                 return error;
 253
 254         if ((attr->ia_valid & ATTR_SIZE) &&
 255             attr->ia_size != i_size_read(inode)) {
 256                 inode_dio_wait(inode);
 257                 if (attr->ia_size > inode->i_size) {
 258                         error = generic_cont_expand_simple(inode,
 259                                                            attr->ia_size);
 260                         if (error)
 261                                 return error;
 262                 }
 263                 truncate_setsize(inode, attr->ia_size);
 264                 hfsplus_file_truncate(inode);
 265         }
 266
 267         setattr_copy(inode, attr);
 268         mark_inode_dirty(inode);
 269
 270         if (attr->ia_valid & ATTR_MODE) {
 271                 error = posix_acl_chmod(inode, inode->i_mode);
 272                 if (unlikely(error))
 273                         return error;
 274         }
 275
 276         return 0;
 277 }
 278
 279 int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end,
 280                        int datasync)
 281 {
 282         struct inode *inode = file->f_mapping->host;
 283         struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
 284         struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
 285         int error = 0, error2;
 286
 287         error = file_write_and_wait_range(file, start, end);
 288         if (error)
 289                 return error;
 290         inode_lock(inode);
 291
 292         /*
 293          * Sync inode metadata into the catalog and extent trees.
 294          */
 295         sync_inode_metadata(inode, 1);
 296
 297         /*
 298          * And explicitly write out the btrees.
 299          */
 300         if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags))
 301                 error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping);
 302
 303         if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) {
 304                 error2 =
 305                         filemap_write_and_wait(sbi->ext_tree->inode->i_mapping);
 306                 if (!error)
 307                         error = error2;
 308         }
 309
 310         if (test_and_clear_bit(HFSPLUS_I_ATTR_DIRTY, &hip->flags)) {
 311                 if (sbi->attr_tree) {
 312                         error2 =
 313                                 filemap_write_and_wait(
 314                                             sbi->attr_tree->inode->i_mapping);
 315                         if (!error)
 316                                 error = error2;
 317                 } else {
 318                         pr_err("sync non-existent attributes tree\n");
 319                 }
 320         }
 321
 322         if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) {
 323                 error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping);
 324                 if (!error)
 325                         error = error2;
 326         }
 327
 328         if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags))
 329                 blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL);
 330
 331         inode_unlock(inode);
 332
 333         return error;
 334 }
 335
 336 static const struct inode_operations hfsplus_file_inode_operations = {
 337         .setattr        = hfsplus_setattr,
 338         .listxattr      = hfsplus_listxattr,
 339 #ifdef CONFIG_HFSPLUS_FS_POSIX_ACL
 340         .get_acl        = hfsplus_get_posix_acl,
 341         .set_acl        = hfsplus_set_posix_acl,
 342 #endif
 343 };
 344
 345 static const struct file_operations hfsplus_file_operations = {
 346         .llseek         = generic_file_llseek,
 347         .read_iter      = generic_file_read_iter,
 348         .write_iter     = generic_file_write_iter,
 349         .mmap           = generic_file_mmap,
 350         .splice_read    = generic_file_splice_read,
 351         .fsync          = hfsplus_file_fsync,
 352         .open           = hfsplus_file_open,
 353         .release        = hfsplus_file_release,
 354         .unlocked_ioctl = hfsplus_ioctl,
 355 };
 356
 357 struct inode *hfsplus_new_inode(struct super_block *sb, struct inode *dir,
 358                                 umode_t mode)
 359 {
 360         struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
 361         struct inode *inode = new_inode(sb);
 362         struct hfsplus_inode_info *hip;
 363
 364         if (!inode)
 365                 return NULL;
 366
 367         inode->i_ino = sbi->next_cnid++;
 368         inode_init_owner(inode, dir, mode);
 369         set_nlink(inode, 1);
 370         inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
 371
 372         hip = HFSPLUS_I(inode);
 373         INIT_LIST_HEAD(&hip->open_dir_list);
 374         spin_lock_init(&hip->open_dir_lock);
 375         mutex_init(&hip->extents_lock);
 376         atomic_set(&hip->opencnt, 0);
 377         hip->extent_state = 0;
 378         hip->flags = 0;
 379         hip->userflags = 0;
 380         hip->subfolders = 0;
 381         memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec));
 382         memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
 383         hip->alloc_blocks = 0;
 384         hip->first_blocks = 0;
 385         hip->cached_start = 0;
 386         hip->cached_blocks = 0;
 387         hip->phys_size = 0;
 388         hip->fs_blocks = 0;
 389         hip->rsrc_inode = NULL;
 390         if (S_ISDIR(inode->i_mode)) {
 391                 inode->i_size = 2;
 392                 sbi->folder_count++;
 393                 inode->i_op = &hfsplus_dir_inode_operations;
 394                 inode->i_fop = &hfsplus_dir_operations;
 395         } else if (S_ISREG(inode->i_mode)) {
 396                 sbi->file_count++;
 397                 inode->i_op = &hfsplus_file_inode_operations;
 398                 inode->i_fop = &hfsplus_file_operations;
 399                 inode->i_mapping->a_ops = &hfsplus_aops;
 400                 hip->clump_blocks = sbi->data_clump_blocks;
 401         } else if (S_ISLNK(inode->i_mode)) {
 402                 sbi->file_count++;
 403                 inode->i_op = &page_symlink_inode_operations;
 404                 inode_nohighmem(inode);
 405                 inode->i_mapping->a_ops = &hfsplus_aops;
 406                 hip->clump_blocks = 1;
 407         } else
 408                 sbi->file_count++;
 409         insert_inode_hash(inode);
 410         mark_inode_dirty(inode);
 411         hfsplus_mark_mdb_dirty(sb);
 412
 413         return inode;
 414 }
 415
 416 void hfsplus_delete_inode(struct inode *inode)
 417 {
 418         struct super_block *sb = inode->i_sb;
 419
 420         if (S_ISDIR(inode->i_mode)) {
 421                 HFSPLUS_SB(sb)->folder_count--;
 422                 hfsplus_mark_mdb_dirty(sb);
 423                 return;
 424         }
 425         HFSPLUS_SB(sb)->file_count--;
 426         if (S_ISREG(inode->i_mode)) {
 427                 if (!inode->i_nlink) {
 428                         inode->i_size = 0;
 429                         hfsplus_file_truncate(inode);
 430                 }
 431         } else if (S_ISLNK(inode->i_mode)) {
 432                 inode->i_size = 0;
 433                 hfsplus_file_truncate(inode);
 434         }
 435         hfsplus_mark_mdb_dirty(sb);
 436 }
 437
 438 void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
 439 {
 440         struct super_block *sb = inode->i_sb;
 441         struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
 442         struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
 443         u32 count;
 444         int i;
 445
 446         memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec));
 447         for (count = 0, i = 0; i < 8; i++)
 448                 count += be32_to_cpu(fork->extents[i].block_count);
 449         hip->first_blocks = count;
 450         memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
 451         hip->cached_start = 0;
 452         hip->cached_blocks = 0;
 453
 454         hip->alloc_blocks = be32_to_cpu(fork->total_blocks);
 455         hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size);
 456         hip->fs_blocks =
 457                 (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
 458         inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits);
 459         hip->clump_blocks =
 460                 be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift;
 461         if (!hip->clump_blocks) {
 462                 hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ?
 463                         sbi->rsrc_clump_blocks :
 464                         sbi->data_clump_blocks;
 465         }
 466 }
 467
 468 void hfsplus_inode_write_fork(struct inode *inode,
 469                 struct hfsplus_fork_raw *fork)
 470 {
 471         memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents,
 472                sizeof(hfsplus_extent_rec));
 473         fork->total_size = cpu_to_be64(inode->i_size);
 474         fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks);
 475 }
 476
 477 int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
 478 {
 479         hfsplus_cat_entry entry;
 480         int res = 0;
 481         u16 type;
 482
 483         type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset);
 484
 485         HFSPLUS_I(inode)->linkid = 0;
 486         if (type == HFSPLUS_FOLDER) {
 487                 struct hfsplus_cat_folder *folder = &entry.folder;
 488
 489                 if (fd->entrylength < sizeof(struct hfsplus_cat_folder))
 490                         /* panic? */;
 491                 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
 492                                         sizeof(struct hfsplus_cat_folder));
 493                 hfsplus_get_perms(inode, &folder->permissions, 1);
 494                 set_nlink(inode, 1);
 495                 inode->i_size = 2 + be32_to_cpu(folder->valence);
 496                 inode->i_atime = hfsp_mt2ut(folder->access_date);
 497                 inode->i_mtime = hfsp_mt2ut(folder->content_mod_date);
 498                 inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date);
 499                 HFSPLUS_I(inode)->create_date = folder->create_date;
 500                 HFSPLUS_I(inode)->fs_blocks = 0;
 501                 if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) {
 502                         HFSPLUS_I(inode)->subfolders =
 503                                 be32_to_cpu(folder->subfolders);
 504                 }
 505                 inode->i_op = &hfsplus_dir_inode_operations;
 506                 inode->i_fop = &hfsplus_dir_operations;
 507         } else if (type == HFSPLUS_FILE) {
 508                 struct hfsplus_cat_file *file = &entry.file;
 509
 510                 if (fd->entrylength < sizeof(struct hfsplus_cat_file))
 511                         /* panic? */;
 512                 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
 513                                         sizeof(struct hfsplus_cat_file));
 514
 515                 hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ?
 516                                         &file->rsrc_fork : &file->data_fork);
 517                 hfsplus_get_perms(inode, &file->permissions, 0);
 518                 set_nlink(inode, 1);
 519                 if (S_ISREG(inode->i_mode)) {
 520                         if (file->permissions.dev)
 521                                 set_nlink(inode,
 522                                           be32_to_cpu(file->permissions.dev));
 523                         inode->i_op = &hfsplus_file_inode_operations;
 524                         inode->i_fop = &hfsplus_file_operations;
 525                         inode->i_mapping->a_ops = &hfsplus_aops;
 526                 } else if (S_ISLNK(inode->i_mode)) {
 527                         inode->i_op = &page_symlink_inode_operations;
 528                         inode_nohighmem(inode);
 529                         inode->i_mapping->a_ops = &hfsplus_aops;
 530                 } else {
 531                         init_special_inode(inode, inode->i_mode,
 532                                            be32_to_cpu(file->permissions.dev));
 533                 }
 534                 inode->i_atime = hfsp_mt2ut(file->access_date);
 535                 inode->i_mtime = hfsp_mt2ut(file->content_mod_date);
 536                 inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date);
 537                 HFSPLUS_I(inode)->create_date = file->create_date;
 538         } else {
 539                 pr_err("bad catalog entry used to create inode\n");
 540                 res = -EIO;
 541         }
 542         return res;
 543 }
 544
 545 int hfsplus_cat_write_inode(struct inode *inode)
 546 {
 547         struct inode *main_inode = inode;
 548         struct hfs_find_data fd;
 549         hfsplus_cat_entry entry;
 550
 551         if (HFSPLUS_IS_RSRC(inode))
 552                 main_inode = HFSPLUS_I(inode)->rsrc_inode;
 553
 554         if (!main_inode->i_nlink)
 555                 return 0;
 556
 557         if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd))
 558                 /* panic? */
 559                 return -EIO;
 560
 561         if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd))
 562                 /* panic? */
 563                 goto out;
 564
 565         if (S_ISDIR(main_inode->i_mode)) {
 566                 struct hfsplus_cat_folder *folder = &entry.folder;
 567
 568                 if (fd.entrylength < sizeof(struct hfsplus_cat_folder))
 569                         /* panic? */;
 570                 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
 571                                         sizeof(struct hfsplus_cat_folder));
 572                 /* simple node checks? */
 573                 hfsplus_cat_set_perms(inode, &folder->permissions);
 574                 folder->access_date = hfsp_ut2mt(inode->i_atime);
 575                 folder->content_mod_date = hfsp_ut2mt(inode->i_mtime);
 576                 folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
 577                 folder->valence = cpu_to_be32(inode->i_size - 2);
 578                 if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) {
 579                         folder->subfolders =
 580                                 cpu_to_be32(HFSPLUS_I(inode)->subfolders);
 581                 }
 582                 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
 583                                          sizeof(struct hfsplus_cat_folder));
 584         } else if (HFSPLUS_IS_RSRC(inode)) {
 585                 struct hfsplus_cat_file *file = &entry.file;
 586                 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
 587                                sizeof(struct hfsplus_cat_file));
 588                 hfsplus_inode_write_fork(inode, &file->rsrc_fork);
 589                 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
 590                                 sizeof(struct hfsplus_cat_file));
 591         } else {
 592                 struct hfsplus_cat_file *file = &entry.file;
 593
 594                 if (fd.entrylength < sizeof(struct hfsplus_cat_file))
 595                         /* panic? */;
 596                 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
 597                                         sizeof(struct hfsplus_cat_file));
 598                 hfsplus_inode_write_fork(inode, &file->data_fork);
 599                 hfsplus_cat_set_perms(inode, &file->permissions);
 600                 if (HFSPLUS_FLG_IMMUTABLE &
 601                                 (file->permissions.rootflags |
 602                                         file->permissions.userflags))
 603                         file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED);
 604                 else
 605                         file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED);
 606                 file->access_date = hfsp_ut2mt(inode->i_atime);
 607                 file->content_mod_date = hfsp_ut2mt(inode->i_mtime);
 608                 file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
 609                 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
 610                                          sizeof(struct hfsplus_cat_file));
 611         }
 612
 613         set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags);
 614 out:
 615         hfs_find_exit(&fd);
 616         return 0;
 617 }