fs/hfsplus/inode.c

   1 /*
   2  *  linux/fs/hfsplus/inode.c
   3  *
   4  * Copyright (C) 2001
   5  * Brad Boyer (flar@allandria.com)
   6  * (C) 2003 Ardis Technologies <roman@ardistech.com>
   7  *
   8  * Inode handling routines
   9  */
  10
  11 #include <linux/mm.h>
  12 #include <linux/fs.h>
  13 #include <linux/pagemap.h>
  14 #include <linux/mpage.h>
  15 #include <linux/sched.h>
  16
  17 #include "hfsplus_fs.h"
  18 #include "hfsplus_raw.h"
  19
  20 static int hfsplus_readpage(struct file *file, struct page *page)
  21 {
  22         return block_read_full_page(page, hfsplus_get_block);
  23 }
  24
  25 static int hfsplus_writepage(struct page *page, struct writeback_control *wbc)
  26 {
  27         return block_write_full_page(page, hfsplus_get_block, wbc);
  28 }
  29
  30 static int hfsplus_write_begin(struct file *file, struct address_space *mapping,
  31                         loff_t pos, unsigned len, unsigned flags,
  32                         struct page **pagep, void **fsdata)
  33 {
  34         *pagep = NULL;
  35         return cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
  36                                 hfsplus_get_block,
  37                                 &HFSPLUS_I(mapping->host).phys_size);
  38 }
  39
  40 static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block)
  41 {
  42         return generic_block_bmap(mapping, block, hfsplus_get_block);
  43 }
  44
  45 static int hfsplus_releasepage(struct page *page, gfp_t mask)
  46 {
  47         struct inode *inode = page->mapping->host;
  48         struct super_block *sb = inode->i_sb;
  49         struct hfs_btree *tree;
  50         struct hfs_bnode *node;
  51         u32 nidx;
  52         int i, res = 1;
  53
  54         switch (inode->i_ino) {
  55         case HFSPLUS_EXT_CNID:
  56                 tree = HFSPLUS_SB(sb).ext_tree;
  57                 break;
  58         case HFSPLUS_CAT_CNID:
  59                 tree = HFSPLUS_SB(sb).cat_tree;
  60                 break;
  61         case HFSPLUS_ATTR_CNID:
  62                 tree = HFSPLUS_SB(sb).attr_tree;
  63                 break;
  64         default:
  65                 BUG();
  66                 return 0;
  67         }
  68         if (!tree)
  69                 return 0;
  70         if (tree->node_size >= PAGE_CACHE_SIZE) {
  71                 nidx = page->index >> (tree->node_size_shift - PAGE_CACHE_SHIFT);
  72                 spin_lock(&tree->hash_lock);
  73                 node = hfs_bnode_findhash(tree, nidx);
  74                 if (!node)
  75                         ;
  76                 else if (atomic_read(&node->refcnt))
  77                         res = 0;
  78                 if (res && node) {
  79                         hfs_bnode_unhash(node);
  80                         hfs_bnode_free(node);
  81                 }
  82                 spin_unlock(&tree->hash_lock);
  83         } else {
  84                 nidx = page->index << (PAGE_CACHE_SHIFT - tree->node_size_shift);
  85                 i = 1 << (PAGE_CACHE_SHIFT - tree->node_size_shift);
  86                 spin_lock(&tree->hash_lock);
  87                 do {
  88                         node = hfs_bnode_findhash(tree, nidx++);
  89                         if (!node)
  90                                 continue;
  91                         if (atomic_read(&node->refcnt)) {
  92                                 res = 0;
  93                                 break;
  94                         }
  95                         hfs_bnode_unhash(node);
  96                         hfs_bnode_free(node);
  97                 } while (--i && nidx < tree->node_count);
  98                 spin_unlock(&tree->hash_lock);
  99         }
 100         return res ? try_to_free_buffers(page) : 0;
 101 }
 102
 103 static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb,
 104                 const struct iovec *iov, loff_t offset, unsigned long nr_segs)
 105 {
 106         struct file *file = iocb->ki_filp;
 107         struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host;
 108
 109         return blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
 110                                   offset, nr_segs, hfsplus_get_block, NULL);
 111 }
 112
 113 static int hfsplus_writepages(struct address_space *mapping,
 114                               struct writeback_control *wbc)
 115 {
 116         return mpage_writepages(mapping, wbc, hfsplus_get_block);
 117 }
 118
 119 const struct address_space_operations hfsplus_btree_aops = {
 120         .readpage       = hfsplus_readpage,
 121         .writepage      = hfsplus_writepage,
 122         .sync_page      = block_sync_page,
 123         .write_begin    = hfsplus_write_begin,
 124         .write_end      = generic_write_end,
 125         .bmap           = hfsplus_bmap,
 126         .releasepage    = hfsplus_releasepage,
 127 };
 128
 129 const struct address_space_operations hfsplus_aops = {
 130         .readpage       = hfsplus_readpage,
 131         .writepage      = hfsplus_writepage,
 132         .sync_page      = block_sync_page,
 133         .write_begin    = hfsplus_write_begin,
 134         .write_end      = generic_write_end,
 135         .bmap           = hfsplus_bmap,
 136         .direct_IO      = hfsplus_direct_IO,
 137         .writepages     = hfsplus_writepages,
 138 };
 139
 140 struct dentry_operations hfsplus_dentry_operations = {
 141         .d_hash       = hfsplus_hash_dentry,
 142         .d_compare    = hfsplus_compare_dentry,
 143 };
 144
 145 static struct dentry *hfsplus_file_lookup(struct inode *dir, struct dentry *dentry,
 146                                           struct nameidata *nd)
 147 {
 148         struct hfs_find_data fd;
 149         struct super_block *sb = dir->i_sb;
 150         struct inode *inode = NULL;
 151         int err;
 152
 153         if (HFSPLUS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc"))
 154                 goto out;
 155
 156         inode = HFSPLUS_I(dir).rsrc_inode;
 157         if (inode)
 158                 goto out;
 159
 160         inode = new_inode(sb);
 161         if (!inode)
 162                 return ERR_PTR(-ENOMEM);
 163
 164         inode->i_ino = dir->i_ino;
 165         INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list);
 166         mutex_init(&HFSPLUS_I(inode).extents_lock);
 167         HFSPLUS_I(inode).flags = HFSPLUS_FLG_RSRC;
 168
 169         hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
 170         err = hfsplus_find_cat(sb, dir->i_ino, &fd);
 171         if (!err)
 172                 err = hfsplus_cat_read_inode(inode, &fd);
 173         hfs_find_exit(&fd);
 174         if (err) {
 175                 iput(inode);
 176                 return ERR_PTR(err);
 177         }
 178         HFSPLUS_I(inode).rsrc_inode = dir;
 179         HFSPLUS_I(dir).rsrc_inode = inode;
 180         igrab(dir);
 181         hlist_add_head(&inode->i_hash, &HFSPLUS_SB(sb).rsrc_inodes);
 182         mark_inode_dirty(inode);
 183 out:
 184         d_add(dentry, inode);
 185         return NULL;
 186 }
 187
 188 static void hfsplus_get_perms(struct inode *inode, struct hfsplus_perm *perms, int dir)
 189 {
 190         struct super_block *sb = inode->i_sb;
 191         u16 mode;
 192
 193         mode = be16_to_cpu(perms->mode);
 194
 195         inode->i_uid = be32_to_cpu(perms->owner);
 196         if (!inode->i_uid && !mode)
 197                 inode->i_uid = HFSPLUS_SB(sb).uid;
 198
 199         inode->i_gid = be32_to_cpu(perms->group);
 200         if (!inode->i_gid && !mode)
 201                 inode->i_gid = HFSPLUS_SB(sb).gid;
 202
 203         if (dir) {
 204                 mode = mode ? (mode & S_IALLUGO) :
 205                         (S_IRWXUGO & ~(HFSPLUS_SB(sb).umask));
 206                 mode |= S_IFDIR;
 207         } else if (!mode)
 208                 mode = S_IFREG | ((S_IRUGO|S_IWUGO) &
 209                         ~(HFSPLUS_SB(sb).umask));
 210         inode->i_mode = mode;
 211
 212         HFSPLUS_I(inode).rootflags = perms->rootflags;
 213         HFSPLUS_I(inode).userflags = perms->userflags;
 214         if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE)
 215                 inode->i_flags |= S_IMMUTABLE;
 216         else
 217                 inode->i_flags &= ~S_IMMUTABLE;
 218         if (perms->rootflags & HFSPLUS_FLG_APPEND)
 219                 inode->i_flags |= S_APPEND;
 220         else
 221                 inode->i_flags &= ~S_APPEND;
 222 }
 223
 224 static void hfsplus_set_perms(struct inode *inode, struct hfsplus_perm *perms)
 225 {
 226         if (inode->i_flags & S_IMMUTABLE)
 227                 perms->rootflags |= HFSPLUS_FLG_IMMUTABLE;
 228         else
 229                 perms->rootflags &= ~HFSPLUS_FLG_IMMUTABLE;
 230         if (inode->i_flags & S_APPEND)
 231                 perms->rootflags |= HFSPLUS_FLG_APPEND;
 232         else
 233                 perms->rootflags &= ~HFSPLUS_FLG_APPEND;
 234         perms->userflags = HFSPLUS_I(inode).userflags;
 235         perms->mode = cpu_to_be16(inode->i_mode);
 236         perms->owner = cpu_to_be32(inode->i_uid);
 237         perms->group = cpu_to_be32(inode->i_gid);
 238         perms->dev = cpu_to_be32(HFSPLUS_I(inode).dev);
 239 }
 240
 241 static int hfsplus_permission(struct inode *inode, int mask)
 242 {
 243         /* MAY_EXEC is also used for lookup, if no x bit is set allow lookup,
 244          * open_exec has the same test, so it's still not executable, if a x bit
 245          * is set fall back to standard permission check.
 246          */
 247         if (S_ISREG(inode->i_mode) && mask & MAY_EXEC && !(inode->i_mode & 0111))
 248                 return 0;
 249         return generic_permission(inode, mask, NULL);
 250 }
 251
 252
 253 static int hfsplus_file_open(struct inode *inode, struct file *file)
 254 {
 255         if (HFSPLUS_IS_RSRC(inode))
 256                 inode = HFSPLUS_I(inode).rsrc_inode;
 257         atomic_inc(&HFSPLUS_I(inode).opencnt);
 258         return 0;
 259 }
 260
 261 static int hfsplus_file_release(struct inode *inode, struct file *file)
 262 {
 263         struct super_block *sb = inode->i_sb;
 264
 265         if (HFSPLUS_IS_RSRC(inode))
 266                 inode = HFSPLUS_I(inode).rsrc_inode;
 267         if (atomic_dec_and_test(&HFSPLUS_I(inode).opencnt)) {
 268                 mutex_lock(&inode->i_mutex);
 269                 hfsplus_file_truncate(inode);
 270                 if (inode->i_flags & S_DEAD) {
 271                         hfsplus_delete_cat(inode->i_ino, HFSPLUS_SB(sb).hidden_dir, NULL);
 272                         hfsplus_delete_inode(inode);
 273                 }
 274                 mutex_unlock(&inode->i_mutex);
 275         }
 276         return 0;
 277 }
 278
 279 static const struct inode_operations hfsplus_file_inode_operations = {
 280         .lookup         = hfsplus_file_lookup,
 281         .truncate       = hfsplus_file_truncate,
 282         .permission     = hfsplus_permission,
 283         .setxattr       = hfsplus_setxattr,
 284         .getxattr       = hfsplus_getxattr,
 285         .listxattr      = hfsplus_listxattr,
 286 };
 287
 288 static const struct file_operations hfsplus_file_operations = {
 289         .llseek         = generic_file_llseek,
 290         .read           = do_sync_read,
 291         .aio_read       = generic_file_aio_read,
 292         .write          = do_sync_write,
 293         .aio_write      = generic_file_aio_write,
 294         .mmap           = generic_file_mmap,
 295         .splice_read    = generic_file_splice_read,
 296         .fsync          = file_fsync,
 297         .open           = hfsplus_file_open,
 298         .release        = hfsplus_file_release,
 299         .ioctl          = hfsplus_ioctl,
 300 };
 301
 302 struct inode *hfsplus_new_inode(struct super_block *sb, int mode)
 303 {
 304         struct inode *inode = new_inode(sb);
 305         if (!inode)
 306                 return NULL;
 307
 308         inode->i_ino = HFSPLUS_SB(sb).next_cnid++;
 309         inode->i_mode = mode;
 310         inode->i_uid = current->fsuid;
 311         inode->i_gid = current->fsgid;
 312         inode->i_nlink = 1;
 313         inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
 314         INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list);
 315         mutex_init(&HFSPLUS_I(inode).extents_lock);
 316         atomic_set(&HFSPLUS_I(inode).opencnt, 0);
 317         HFSPLUS_I(inode).flags = 0;
 318         memset(HFSPLUS_I(inode).first_extents, 0, sizeof(hfsplus_extent_rec));
 319         memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec));
 320         HFSPLUS_I(inode).alloc_blocks = 0;
 321         HFSPLUS_I(inode).first_blocks = 0;
 322         HFSPLUS_I(inode).cached_start = 0;
 323         HFSPLUS_I(inode).cached_blocks = 0;
 324         HFSPLUS_I(inode).phys_size = 0;
 325         HFSPLUS_I(inode).fs_blocks = 0;
 326         HFSPLUS_I(inode).rsrc_inode = NULL;
 327         if (S_ISDIR(inode->i_mode)) {
 328                 inode->i_size = 2;
 329                 HFSPLUS_SB(sb).folder_count++;
 330                 inode->i_op = &hfsplus_dir_inode_operations;
 331                 inode->i_fop = &hfsplus_dir_operations;
 332         } else if (S_ISREG(inode->i_mode)) {
 333                 HFSPLUS_SB(sb).file_count++;
 334                 inode->i_op = &hfsplus_file_inode_operations;
 335                 inode->i_fop = &hfsplus_file_operations;
 336                 inode->i_mapping->a_ops = &hfsplus_aops;
 337                 HFSPLUS_I(inode).clump_blocks = HFSPLUS_SB(sb).data_clump_blocks;
 338         } else if (S_ISLNK(inode->i_mode)) {
 339                 HFSPLUS_SB(sb).file_count++;
 340                 inode->i_op = &page_symlink_inode_operations;
 341                 inode->i_mapping->a_ops = &hfsplus_aops;
 342                 HFSPLUS_I(inode).clump_blocks = 1;
 343         } else
 344                 HFSPLUS_SB(sb).file_count++;
 345         insert_inode_hash(inode);
 346         mark_inode_dirty(inode);
 347         sb->s_dirt = 1;
 348
 349         return inode;
 350 }
 351
 352 void hfsplus_delete_inode(struct inode *inode)
 353 {
 354         struct super_block *sb = inode->i_sb;
 355
 356         if (S_ISDIR(inode->i_mode)) {
 357                 HFSPLUS_SB(sb).folder_count--;
 358                 sb->s_dirt = 1;
 359                 return;
 360         }
 361         HFSPLUS_SB(sb).file_count--;
 362         if (S_ISREG(inode->i_mode)) {
 363                 if (!inode->i_nlink) {
 364                         inode->i_size = 0;
 365                         hfsplus_file_truncate(inode);
 366                 }
 367         } else if (S_ISLNK(inode->i_mode)) {
 368                 inode->i_size = 0;
 369                 hfsplus_file_truncate(inode);
 370         }
 371         sb->s_dirt = 1;
 372 }
 373
 374 void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
 375 {
 376         struct super_block *sb = inode->i_sb;
 377         u32 count;
 378         int i;
 379
 380         memcpy(&HFSPLUS_I(inode).first_extents, &fork->extents,
 381                sizeof(hfsplus_extent_rec));
 382         for (count = 0, i = 0; i < 8; i++)
 383                 count += be32_to_cpu(fork->extents[i].block_count);
 384         HFSPLUS_I(inode).first_blocks = count;
 385         memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec));
 386         HFSPLUS_I(inode).cached_start = 0;
 387         HFSPLUS_I(inode).cached_blocks = 0;
 388
 389         HFSPLUS_I(inode).alloc_blocks = be32_to_cpu(fork->total_blocks);
 390         inode->i_size = HFSPLUS_I(inode).phys_size = be64_to_cpu(fork->total_size);
 391         HFSPLUS_I(inode).fs_blocks = (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
 392         inode_set_bytes(inode, HFSPLUS_I(inode).fs_blocks << sb->s_blocksize_bits);
 393         HFSPLUS_I(inode).clump_blocks = be32_to_cpu(fork->clump_size) >> HFSPLUS_SB(sb).alloc_blksz_shift;
 394         if (!HFSPLUS_I(inode).clump_blocks)
 395                 HFSPLUS_I(inode).clump_blocks = HFSPLUS_IS_RSRC(inode) ? HFSPLUS_SB(sb).rsrc_clump_blocks :
 396                                 HFSPLUS_SB(sb).data_clump_blocks;
 397 }
 398
 399 void hfsplus_inode_write_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
 400 {
 401         memcpy(&fork->extents, &HFSPLUS_I(inode).first_extents,
 402                sizeof(hfsplus_extent_rec));
 403         fork->total_size = cpu_to_be64(inode->i_size);
 404         fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode).alloc_blocks);
 405 }
 406
 407 int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
 408 {
 409         hfsplus_cat_entry entry;
 410         int res = 0;
 411         u16 type;
 412
 413         type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset);
 414
 415         HFSPLUS_I(inode).dev = 0;
 416         if (type == HFSPLUS_FOLDER) {
 417                 struct hfsplus_cat_folder *folder = &entry.folder;
 418
 419                 if (fd->entrylength < sizeof(struct hfsplus_cat_folder))
 420                         /* panic? */;
 421                 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
 422                                         sizeof(struct hfsplus_cat_folder));
 423                 hfsplus_get_perms(inode, &folder->permissions, 1);
 424                 inode->i_nlink = 1;
 425                 inode->i_size = 2 + be32_to_cpu(folder->valence);
 426                 inode->i_atime = hfsp_mt2ut(folder->access_date);
 427                 inode->i_mtime = hfsp_mt2ut(folder->content_mod_date);
 428                 inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date);
 429                 HFSPLUS_I(inode).create_date = folder->create_date;
 430                 HFSPLUS_I(inode).fs_blocks = 0;
 431                 inode->i_op = &hfsplus_dir_inode_operations;
 432                 inode->i_fop = &hfsplus_dir_operations;
 433         } else if (type == HFSPLUS_FILE) {
 434                 struct hfsplus_cat_file *file = &entry.file;
 435
 436                 if (fd->entrylength < sizeof(struct hfsplus_cat_file))
 437                         /* panic? */;
 438                 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
 439                                         sizeof(struct hfsplus_cat_file));
 440
 441                 hfsplus_inode_read_fork(inode, HFSPLUS_IS_DATA(inode) ?
 442                                         &file->data_fork : &file->rsrc_fork);
 443                 hfsplus_get_perms(inode, &file->permissions, 0);
 444                 inode->i_nlink = 1;
 445                 if (S_ISREG(inode->i_mode)) {
 446                         if (file->permissions.dev)
 447                                 inode->i_nlink = be32_to_cpu(file->permissions.dev);
 448                         inode->i_op = &hfsplus_file_inode_operations;
 449                         inode->i_fop = &hfsplus_file_operations;
 450                         inode->i_mapping->a_ops = &hfsplus_aops;
 451                 } else if (S_ISLNK(inode->i_mode)) {
 452                         inode->i_op = &page_symlink_inode_operations;
 453                         inode->i_mapping->a_ops = &hfsplus_aops;
 454                 } else {
 455                         init_special_inode(inode, inode->i_mode,
 456                                            be32_to_cpu(file->permissions.dev));
 457                 }
 458                 inode->i_atime = hfsp_mt2ut(file->access_date);
 459                 inode->i_mtime = hfsp_mt2ut(file->content_mod_date);
 460                 inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date);
 461                 HFSPLUS_I(inode).create_date = file->create_date;
 462         } else {
 463                 printk(KERN_ERR "hfs: bad catalog entry used to create inode\n");
 464                 res = -EIO;
 465         }
 466         return res;
 467 }
 468
 469 int hfsplus_cat_write_inode(struct inode *inode)
 470 {
 471         struct inode *main_inode = inode;
 472         struct hfs_find_data fd;
 473         hfsplus_cat_entry entry;
 474
 475         if (HFSPLUS_IS_RSRC(inode))
 476                 main_inode = HFSPLUS_I(inode).rsrc_inode;
 477
 478         if (!main_inode->i_nlink)
 479                 return 0;
 480
 481         if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb).cat_tree, &fd))
 482                 /* panic? */
 483                 return -EIO;
 484
 485         if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd))
 486                 /* panic? */
 487                 goto out;
 488
 489         if (S_ISDIR(main_inode->i_mode)) {
 490                 struct hfsplus_cat_folder *folder = &entry.folder;
 491
 492                 if (fd.entrylength < sizeof(struct hfsplus_cat_folder))
 493                         /* panic? */;
 494                 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
 495                                         sizeof(struct hfsplus_cat_folder));
 496                 /* simple node checks? */
 497                 hfsplus_set_perms(inode, &folder->permissions);
 498                 folder->access_date = hfsp_ut2mt(inode->i_atime);
 499                 folder->content_mod_date = hfsp_ut2mt(inode->i_mtime);
 500                 folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
 501                 folder->valence = cpu_to_be32(inode->i_size - 2);
 502                 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
 503                                          sizeof(struct hfsplus_cat_folder));
 504         } else if (HFSPLUS_IS_RSRC(inode)) {
 505                 struct hfsplus_cat_file *file = &entry.file;
 506                 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
 507                                sizeof(struct hfsplus_cat_file));
 508                 hfsplus_inode_write_fork(inode, &file->rsrc_fork);
 509                 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
 510                                 sizeof(struct hfsplus_cat_file));
 511         } else {
 512                 struct hfsplus_cat_file *file = &entry.file;
 513
 514                 if (fd.entrylength < sizeof(struct hfsplus_cat_file))
 515                         /* panic? */;
 516                 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
 517                                         sizeof(struct hfsplus_cat_file));
 518                 hfsplus_inode_write_fork(inode, &file->data_fork);
 519                 if (S_ISREG(inode->i_mode))
 520                         HFSPLUS_I(inode).dev = inode->i_nlink;
 521                 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
 522                         HFSPLUS_I(inode).dev = kdev_t_to_nr(inode->i_rdev);
 523                 hfsplus_set_perms(inode, &file->permissions);
 524                 if ((file->permissions.rootflags | file->permissions.userflags) & HFSPLUS_FLG_IMMUTABLE)
 525                         file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED);
 526                 else
 527                         file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED);
 528                 file->access_date = hfsp_ut2mt(inode->i_atime);
 529                 file->content_mod_date = hfsp_ut2mt(inode->i_mtime);
 530                 file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
 531                 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
 532                                          sizeof(struct hfsplus_cat_file));
 533         }
 534 out:
 535         hfs_find_exit(&fd);
 536         return 0;
 537 }