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/blkdev.h> 12#include <linux/mm.h> 13#include <linux/fs.h> 14#include <linux/pagemap.h> 15#include <linux/mpage.h> 16#include <linux/sched.h> 17 18#include "hfsplus_fs.h" 19#include "hfsplus_raw.h" 20 21static int hfsplus_readpage(struct file *file, struct page *page) 22{ 23 return block_read_full_page(page, hfsplus_get_block); 24} 25 26static int hfsplus_writepage(struct page *page, struct writeback_control *wbc) 27{ 28 return block_write_full_page(page, hfsplus_get_block, wbc); 29} 30 31static int hfsplus_write_begin(struct file *file, struct address_space *mapping, 32 loff_t pos, unsigned len, unsigned flags, 33 struct page **pagep, void **fsdata) 34{ 35 int ret; 36 37 *pagep = NULL; 38 ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata, 39 hfsplus_get_block, 40 &HFSPLUS_I(mapping->host).phys_size); 41 if (unlikely(ret)) { 42 loff_t isize = mapping->host->i_size; 43 if (pos + len > isize) 44 vmtruncate(mapping->host, isize); 45 } 46 47 return ret; 48} 49 50static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block) 51{ 52 return generic_block_bmap(mapping, block, hfsplus_get_block); 53} 54 55static int hfsplus_releasepage(struct page *page, gfp_t mask) 56{ 57 struct inode *inode = page->mapping->host; 58 struct super_block *sb = inode->i_sb; 59 struct hfs_btree *tree; 60 struct hfs_bnode *node; 61 u32 nidx; 62 int i, res = 1; 63 64 switch (inode->i_ino) { 65 case HFSPLUS_EXT_CNID: 66 tree = HFSPLUS_SB(sb).ext_tree; 67 break; 68 case HFSPLUS_CAT_CNID: 69 tree = HFSPLUS_SB(sb).cat_tree; 70 break; 71 case HFSPLUS_ATTR_CNID: 72 tree = HFSPLUS_SB(sb).attr_tree; 73 break; 74 default: 75 BUG(); 76 return 0; 77 } 78 if (!tree) 79 return 0; 80 if (tree->node_size >= PAGE_CACHE_SIZE) { 81 nidx = page->index >> (tree->node_size_shift - PAGE_CACHE_SHIFT); 82 spin_lock(&tree->hash_lock); 83 node = hfs_bnode_findhash(tree, nidx); 84 if (!node) 85 ; 86 else if (atomic_read(&node->refcnt)) 87 res = 0; 88 if (res && node) { 89 hfs_bnode_unhash(node); 90 hfs_bnode_free(node); 91 } 92 spin_unlock(&tree->hash_lock); 93 } else { 94 nidx = page->index << (PAGE_CACHE_SHIFT - tree->node_size_shift); 95 i = 1 << (PAGE_CACHE_SHIFT - tree->node_size_shift); 96 spin_lock(&tree->hash_lock); 97 do { 98 node = hfs_bnode_findhash(tree, nidx++); 99 if (!node) 100 continue; 101 if (atomic_read(&node->refcnt)) { 102 res = 0; 103 break; 104 } 105 hfs_bnode_unhash(node); 106 hfs_bnode_free(node); 107 } while (--i && nidx < tree->node_count); 108 spin_unlock(&tree->hash_lock); 109 } 110 return res ? try_to_free_buffers(page) : 0; 111} 112 113int hfsplus_commit_write_fn(hfsplus_handle_t *hfsplus_handle, struct buffer_head *bh) 114{ 115 if (!buffer_mapped(bh) || buffer_hfsplus_jbd_freed(bh)) 116 return 0; 117 set_buffer_uptodate(bh); 118 119 return hfsplus_journal_dirty_metadata(__FUNCTION__, bh, hfsplus_handle); 120} 121 122static int hfsplus_jbd_set_page_dirty(struct page *page) 123{ 124 SetPageChecked(page); 125 return __set_page_dirty_nobuffers(page); 126} 127 128int hfsplus_walk_page_buffers(hfsplus_handle_t *hfsplus_handle, 129 struct buffer_head *head, 130 unsigned from, 131 unsigned to, 132 int *partial, 133 int (*fn)(hfsplus_handle_t *hfsplus_handle, 134 struct buffer_head *bh)) 135{ 136 struct buffer_head *bh; 137 unsigned block_start, block_end; 138 unsigned blocksize = head->b_size; 139 int err, ret = 0; 140 struct buffer_head *next; 141 142 for ( bh = head, block_start = 0; 143 ret == 0 && (bh != head || !block_start); 144 block_start = block_end, bh = next) 145 { 146 next = bh->b_this_page; 147 block_end = block_start + blocksize; 148 if (block_end <= from || block_start >= to) { 149 if (partial && !buffer_uptodate(bh)) 150 *partial = 1; 151 continue; 152 } 153 err = (*fn)(hfsplus_handle, bh); 154 if (!ret) 155 ret = err; 156 } 157 return ret; 158} 159 160int hfsplus_do_journal_get_write_access(hfsplus_handle_t *hfsplus_handle, struct buffer_head *bh) 161{ 162 if (!buffer_mapped(bh) || buffer_hfsplus_jbd_freed(bh)) 163 return 0; 164 return hfsplus_journal_get_write_access(__FUNCTION__, hfsplus_handle, bh); 165} 166 167static int hfsplus_journalled_writepage(struct page *page, struct writeback_control *wbc) 168{ 169 struct inode *inode = page->mapping->host; 170 struct super_block *sb; 171 hfsplus_handle_t hfsplus_handle; 172 hfsplus_jbd_t *journal; 173 int ret = 0; 174 int err; 175 176 sb = inode->i_sb; 177 178 if (hfsplus_jbd_current_handle()) { 179 dprint(DBG_JCOMMIT, "HFS+-fs: It is already in a handle\n"); 180 goto no_write; 181 } 182 183 journal = HFSPLUS_SB(sb).jnl.s_journal; 184 if (is_hfsplus_jbd_aborted(journal)) { 185 printk("HFS+-fs: Detected aborted journal\n"); 186 goto no_write; 187 } 188 189 if ((ret = hfsplus_journal_start(__FUNCTION__, sb, &hfsplus_handle))) 190 goto no_write; 191 192 /* Taken from ext3 */ 193 if (!page_has_buffers(page) || PageChecked(page)) { 194 /* 195 * It's mmapped pagecache. Add buffers and journal it. There 196 * doesn't seem much point in redirtying the page here. 197 */ 198 ClearPageChecked(page); 199 ret = block_prepare_write(page, 0, PAGE_CACHE_SIZE, hfsplus_get_block); 200 if (ret != 0) { 201 hfsplus_journal_stop(&hfsplus_handle); 202 goto out_unlock; 203 } 204 ret = hfsplus_walk_page_buffers(&hfsplus_handle, page_buffers(page), 0, 205 PAGE_CACHE_SIZE, NULL, hfsplus_do_journal_get_write_access); 206 207 err = hfsplus_walk_page_buffers(&hfsplus_handle, page_buffers(page), 0, 208 PAGE_CACHE_SIZE, NULL, hfsplus_commit_write_fn); 209 if (ret == 0) 210 ret = err; 211 unlock_page(page); 212 } else { 213 /* 214 * It may be a page full of checkpoint-mode buffers. We don't 215 * really know unless we go poke around in the buffer_heads. 216 * But block_write_full_page will do the right thing. 217 */ 218 ret = block_write_full_page(page, hfsplus_get_block, wbc); 219 } 220 err = hfsplus_journal_stop(&hfsplus_handle); 221 if (!ret) 222 ret = err; 223 224out: 225 return ret; 226 227no_write: 228 redirty_page_for_writepage(wbc, page); 229out_unlock: 230 unlock_page(page); 231 goto out; 232} 233 234static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb, 235 const struct iovec *iov, loff_t offset, unsigned long nr_segs) 236{ 237 struct file *file = iocb->ki_filp; 238 struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host; 239 ssize_t ret; 240 241 ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov, 242 offset, nr_segs, hfsplus_get_block, NULL); 243 244 /* 245 * In case of error extending write may have instantiated a few 246 * blocks outside i_size. Trim these off again. 247 */ 248 if (unlikely((rw & WRITE) && ret < 0)) { 249 loff_t isize = i_size_read(inode); 250 loff_t end = offset + iov_length(iov, nr_segs); 251 252 if (end > isize) 253 vmtruncate(inode, isize); 254 } 255 256 return ret; 257} 258 259static int hfsplus_writepages(struct address_space *mapping, 260 struct writeback_control *wbc) 261{ 262 return mpage_writepages(mapping, wbc, hfsplus_get_block); 263} 264 265struct address_space_operations hfsplus_journalled_btree_aops = { 266 .readpage = hfsplus_readpage, 267 .writepage = hfsplus_journalled_writepage, 268 .sync_page = block_sync_page, 269 .set_page_dirty = hfsplus_jbd_set_page_dirty, 270 .bmap = hfsplus_bmap, 271 .releasepage = hfsplus_releasepage, 272}; 273 274struct address_space_operations hfsplus_journalled_aops = { 275 .readpage = hfsplus_readpage, 276 .writepage = hfsplus_journalled_writepage, 277 .sync_page = block_sync_page, 278 .set_page_dirty = hfsplus_jbd_set_page_dirty, 279 .bmap = hfsplus_bmap, 280 .direct_IO = hfsplus_direct_IO, 281 .writepages = hfsplus_writepages, 282}; 283const struct address_space_operations hfsplus_btree_aops = { 284 .readpage = hfsplus_readpage, 285 .writepage = hfsplus_writepage, 286 .sync_page = block_sync_page, 287 .write_begin = hfsplus_write_begin, 288 .write_end = generic_write_end, 289 .bmap = hfsplus_bmap, 290 .releasepage = hfsplus_releasepage, 291}; 292 293const struct address_space_operations hfsplus_aops = { 294 .readpage = hfsplus_readpage, 295 .writepage = hfsplus_writepage, 296 .sync_page = block_sync_page, 297 .write_begin = hfsplus_write_begin, 298 .write_end = generic_write_end, 299 .bmap = hfsplus_bmap, 300 .direct_IO = hfsplus_direct_IO, 301 .writepages = hfsplus_writepages, 302}; 303 304const struct dentry_operations hfsplus_dentry_operations = { 305 .d_hash = hfsplus_hash_dentry, 306 .d_compare = hfsplus_compare_dentry, 307}; 308 309static struct dentry *hfsplus_file_lookup(struct inode *dir, struct dentry *dentry, 310 struct nameidata *nd) 311{ 312 struct hfs_find_data fd; 313 struct super_block *sb = dir->i_sb; 314 struct inode *inode = NULL; 315 hfsplus_handle_t hfsplus_handle; 316 int err; 317 318 if (HFSPLUS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc")) 319 goto out; 320 321 inode = HFSPLUS_I(dir).rsrc_inode; 322 if (inode) 323 goto out; 324 325 if (hfsplus_journal_start(__FUNCTION__, sb, &hfsplus_handle)) 326 return NULL; 327 328 inode = new_inode(sb); 329 if (!inode) { 330 hfsplus_journal_stop(&hfsplus_handle); 331 return ERR_PTR(-ENOMEM); 332 } 333 334 inode->i_ino = dir->i_ino; 335 INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list); 336 mutex_init(&HFSPLUS_I(inode).extents_lock); 337 338 HFSPLUS_I(inode).flags = HFSPLUS_FLG_RSRC; 339 340 err = hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd); 341 if (!err) { 342 err = hfsplus_find_cat(&hfsplus_handle, sb, dir->i_ino, &fd); 343 if (!err) 344 err = hfsplus_cat_read_inode(inode, &fd); 345 hfs_find_exit(&hfsplus_handle, &fd); 346 } 347 if (err) { 348 iput(inode); 349 hfsplus_journal_stop(&hfsplus_handle); 350 return ERR_PTR(err); 351 } 352 HFSPLUS_I(inode).rsrc_inode = dir; 353 HFSPLUS_I(dir).rsrc_inode = inode; 354 igrab(dir); 355// hlist_add_fake(&inode->i_hash); 356 hlist_add_head(&inode->i_hash, &HFSPLUS_SB(sb).rsrc_inodes); 357 hfsplus_journalled_mark_inode_dirty(__FUNCTION__, &hfsplus_handle, inode); 358 hfsplus_journal_stop(&hfsplus_handle); 359out: 360 d_add(dentry, inode); 361 return NULL; 362} 363 364static void hfsplus_get_perms(struct inode *inode, struct hfsplus_perm *perms, int dir) 365{ 366 struct super_block *sb = inode->i_sb; 367 u16 mode; 368 369 mode = be16_to_cpu(perms->mode); 370 371 inode->i_uid = be32_to_cpu(perms->owner); 372 if (!inode->i_uid && !mode) 373 inode->i_uid = HFSPLUS_SB(sb).uid; 374 375 inode->i_gid = be32_to_cpu(perms->group); 376 if (!inode->i_gid && !mode) 377 inode->i_gid = HFSPLUS_SB(sb).gid; 378 379 if (dir) { 380 mode = mode ? (mode & S_IALLUGO) : 381 (S_IRWXUGO & ~(HFSPLUS_SB(sb).umask)); 382 mode |= S_IFDIR; 383 } else if (!mode) 384 mode = S_IFREG | ((S_IRUGO|S_IWUGO) & 385 ~(HFSPLUS_SB(sb).umask)); 386 inode->i_mode = mode; 387 388 HFSPLUS_I(inode).userflags = perms->userflags; 389 if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE) 390 inode->i_flags |= S_IMMUTABLE; 391 else 392 inode->i_flags &= ~S_IMMUTABLE; 393 if (perms->rootflags & HFSPLUS_FLG_APPEND) 394 inode->i_flags |= S_APPEND; 395 else 396 inode->i_flags &= ~S_APPEND; 397} 398 399static void hfsplus_set_perms(struct inode *inode, struct hfsplus_perm *perms) 400{ 401 if (inode->i_flags & S_IMMUTABLE) 402 perms->rootflags |= HFSPLUS_FLG_IMMUTABLE; 403 else 404 perms->rootflags &= ~HFSPLUS_FLG_IMMUTABLE; 405 if (inode->i_flags & S_APPEND) 406 perms->rootflags |= HFSPLUS_FLG_APPEND; 407 else 408 perms->rootflags &= ~HFSPLUS_FLG_APPEND; 409 perms->userflags = HFSPLUS_I(inode).userflags; 410 perms->mode = cpu_to_be16(inode->i_mode); 411 perms->owner = cpu_to_be32(inode->i_uid); 412 perms->group = cpu_to_be32(inode->i_gid); 413 perms->dev = cpu_to_be32(HFSPLUS_I(inode).linkid); 414} 415 416static int hfsplus_file_open(struct inode *inode, struct file *file) 417{ 418 if (HFSPLUS_IS_RSRC(inode)) 419 inode = HFSPLUS_I(inode).rsrc_inode; 420 if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) 421 return -EOVERFLOW; 422 atomic_inc(&HFSPLUS_I(inode).opencnt); 423 return 0; 424} 425 426static int hfsplus_file_release(struct inode *inode, struct file *file) 427{ 428 struct super_block *sb = inode->i_sb; 429 hfsplus_handle_t hfsplus_handle; 430 int ret; 431 432 if (HFSPLUS_IS_RSRC(inode)) 433 inode = HFSPLUS_I(inode).rsrc_inode; 434 if (atomic_dec_and_test(&HFSPLUS_I(inode).opencnt)) { 435 mutex_lock(&inode->i_mutex); 436 hfsplus_file_truncate(inode); 437 if (inode->i_flags & S_DEAD) { 438 if ((ret = hfsplus_journal_start(__FUNCTION__, sb, &hfsplus_handle))) { 439 mutex_unlock(&inode->i_mutex); 440 return ret; 441 } 442 hfsplus_delete_cat(&hfsplus_handle, inode->i_ino, HFSPLUS_SB(sb).hidden_dir, NULL); 443 hfsplus_delete_inode(&hfsplus_handle, inode); 444 hfsplus_journal_stop(&hfsplus_handle); 445 } 446 mutex_unlock(&inode->i_mutex); 447 } 448 return 0; 449} 450 451static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr) 452{ 453 struct inode *inode = dentry->d_inode; 454 int error; 455 456 error = inode_change_ok(inode, attr); 457 if (error) 458 return error; 459 460 if ((attr->ia_valid & ATTR_SIZE) && 461 attr->ia_size != i_size_read(inode)) { 462 error = vmtruncate(inode, attr->ia_size); 463 if (error) 464 return error; 465 } 466 467 setattr_copy(inode, attr); 468 mark_inode_dirty(inode); 469 return 0; 470} 471 472int hfsplus_file_fsync(struct file *filp, int datasync) 473{ 474 struct inode *inode = filp->f_mapping->host; 475 struct super_block * sb; 476 int ret, err; 477 478 /* 479 * Sync inode metadata into the catalog and extent trees. 480 */ 481 ret = write_inode_now(inode, 0); 482 483 /* sync the superblock to buffers */ 484 sb = inode->i_sb; 485 if (sb->s_dirt) { 486 if (!(sb->s_flags & MS_RDONLY)) 487 hfsplus_sync_fs(sb, 1); 488 else 489 sb->s_dirt = 0; 490 } 491 492 /* .. finally sync the buffers to disk */ 493 err = sync_blockdev(sb->s_bdev); 494 if (!ret) 495 ret = err; 496 return ret; 497} 498 499static const struct inode_operations hfsplus_file_inode_operations = { 500 .lookup = hfsplus_file_lookup, 501 .truncate = hfsplus_file_truncate, 502 .setattr = hfsplus_setattr, 503 .setxattr = hfsplus_setxattr, 504 .getxattr = hfsplus_getxattr, 505 .listxattr = hfsplus_listxattr, 506}; 507 508static const struct file_operations hfsplus_file_operations = { 509 .llseek = generic_file_llseek, 510 .read = do_sync_read, 511 .aio_read = generic_file_aio_read, 512 .write = do_sync_write, 513 .aio_write = generic_file_aio_write, 514 .mmap = generic_file_mmap, 515 .splice_read = generic_file_splice_read, 516 .fsync = hfsplus_file_fsync, 517 .open = hfsplus_file_open, 518 .release = hfsplus_file_release, 519 .unlocked_ioctl = hfsplus_ioctl, 520}; 521 522struct inode *hfsplus_new_inode(hfsplus_handle_t *hfsplus_handle, struct super_block *sb, int mode) 523{ 524 struct inode *inode = new_inode(sb); 525 if (!inode) 526 return NULL; 527 528 inode->i_ino = HFSPLUS_SB(sb).next_cnid++; 529 inode->i_mode = mode; 530 inode->i_uid = current_fsuid(); 531 inode->i_gid = current_fsgid(); 532 inode->i_nlink = 1; 533 inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC; 534 INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list); 535 mutex_init(&HFSPLUS_I(inode).extents_lock); 536 atomic_set(&HFSPLUS_I(inode).opencnt, 0); 537 HFSPLUS_I(inode).flags = 0; 538 memset(HFSPLUS_I(inode).first_extents, 0, sizeof(hfsplus_extent_rec)); 539 memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec)); 540 HFSPLUS_I(inode).alloc_blocks = 0; 541 HFSPLUS_I(inode).first_blocks = 0; 542 HFSPLUS_I(inode).cached_start = 0; 543 HFSPLUS_I(inode).cached_blocks = 0; 544 HFSPLUS_I(inode).phys_size = 0; 545 HFSPLUS_I(inode).fs_blocks = 0; 546 HFSPLUS_I(inode).rsrc_inode = NULL; 547 if (S_ISDIR(inode->i_mode)) { 548 inode->i_size = 2; 549 HFSPLUS_SB(sb).folder_count++; 550 inode->i_op = &hfsplus_dir_inode_operations; 551 inode->i_fop = &hfsplus_dir_operations; 552 } else if (S_ISREG(inode->i_mode)) { 553 HFSPLUS_SB(sb).file_count++; 554 inode->i_op = &hfsplus_file_inode_operations; 555 inode->i_fop = &hfsplus_file_operations; 556 inode->i_mapping->a_ops = &hfsplus_aops; 557 HFSPLUS_I(inode).clump_blocks = HFSPLUS_SB(sb).data_clump_blocks; 558 } else if (S_ISLNK(inode->i_mode)) { 559 HFSPLUS_SB(sb).file_count++; 560 inode->i_op = &page_symlink_inode_operations; 561 inode->i_mapping->a_ops = &hfsplus_aops; 562 HFSPLUS_I(inode).clump_blocks = 1; 563 } else 564 HFSPLUS_SB(sb).file_count++; 565 insert_inode_hash(inode); 566 if (hfsplus_journalled_mark_inode_dirty(__FUNCTION__, hfsplus_handle, inode)) { 567 hfsplus_delete_inode(hfsplus_handle, inode); 568 return NULL; 569 } 570 sb->s_dirt = 1; 571 572 return inode; 573} 574 575void hfsplus_delete_inode(hfsplus_handle_t *hfsplus_handle, struct inode *inode) 576{ 577 struct super_block *sb = inode->i_sb; 578 579 if (S_ISDIR(inode->i_mode)) { 580 HFSPLUS_SB(sb).folder_count--; 581 sb->s_dirt = 1; 582 return; 583 } 584 HFSPLUS_SB(sb).file_count--; 585 if (S_ISREG(inode->i_mode)) { 586 if (!inode->i_nlink) { 587 inode->i_size = 0; 588 hfsplus_file_truncate(inode); 589 } 590 } else if (S_ISLNK(inode->i_mode)) { 591 inode->i_size = 0; 592 hfsplus_file_truncate(inode); 593 } 594 sb->s_dirt = 1; 595} 596 597void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork) 598{ 599 struct super_block *sb = inode->i_sb; 600 u32 count; 601 int i; 602 603 memcpy(&HFSPLUS_I(inode).first_extents, &fork->extents, 604 sizeof(hfsplus_extent_rec)); 605 for (count = 0, i = 0; i < 8; i++) 606 count += be32_to_cpu(fork->extents[i].block_count); 607 HFSPLUS_I(inode).first_blocks = count; 608 memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec)); 609 HFSPLUS_I(inode).cached_start = 0; 610 HFSPLUS_I(inode).cached_blocks = 0; 611 612 HFSPLUS_I(inode).alloc_blocks = be32_to_cpu(fork->total_blocks); 613 HFSPLUS_I(inode).phys_size = inode->i_size = be64_to_cpu(fork->total_size); 614 HFSPLUS_I(inode).fs_blocks = (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; 615 inode_set_bytes(inode, HFSPLUS_I(inode).fs_blocks << sb->s_blocksize_bits); 616 /* Foxconn added start pling 05/31/2010 */ 617 /* Set the i_blocks field properly */ 618 inode->i_blocks = inode->i_size/512; 619 if (inode->i_size % 512) 620 inode->i_blocks++; 621 /* Foxconn added end pling 05/31/2010 */ 622 HFSPLUS_I(inode).clump_blocks = be32_to_cpu(fork->clump_size) >> HFSPLUS_SB(sb).alloc_blksz_shift; 623 if (!HFSPLUS_I(inode).clump_blocks) 624 HFSPLUS_I(inode).clump_blocks = HFSPLUS_IS_RSRC(inode) ? 625 HFSPLUS_SB(sb).rsrc_clump_blocks : 626 HFSPLUS_SB(sb).data_clump_blocks; 627} 628 629void hfsplus_inode_write_fork(struct inode *inode, struct hfsplus_fork_raw *fork) 630{ 631 memcpy(&fork->extents, &HFSPLUS_I(inode).first_extents, 632 sizeof(hfsplus_extent_rec)); 633 fork->total_size = cpu_to_be64(inode->i_size); 634 fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode).alloc_blocks); 635} 636 637int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) 638{ 639 hfsplus_cat_entry entry; 640 int res = 0; 641 u16 type; 642 643 type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset); 644 645 HFSPLUS_I(inode).linkid = 0; 646 if (type == HFSPLUS_FOLDER) { 647 struct hfsplus_cat_folder *folder = &entry.folder; 648 649 if (fd->entrylength < sizeof(struct hfsplus_cat_folder)) 650 /* panic? */; 651 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, 652 sizeof(struct hfsplus_cat_folder)); 653 hfsplus_get_perms(inode, &folder->permissions, 1); 654 inode->i_nlink = 1; 655 inode->i_size = 2 + be32_to_cpu(folder->valence); 656 inode->i_atime = hfsp_mt2ut(folder->access_date); 657 inode->i_mtime = hfsp_mt2ut(folder->content_mod_date); 658 inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date); 659 HFSPLUS_I(inode).create_date = folder->create_date; 660 HFSPLUS_I(inode).fs_blocks = 0; 661 inode->i_op = &hfsplus_dir_inode_operations; 662 inode->i_fop = &hfsplus_dir_operations; 663 } else if (type == HFSPLUS_FILE) { 664 struct hfsplus_cat_file *file = &entry.file; 665 666 if (fd->entrylength < sizeof(struct hfsplus_cat_file)) 667 /* panic? */; 668 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, 669 sizeof(struct hfsplus_cat_file)); 670 671 hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ? 672 &file->rsrc_fork : &file->data_fork); 673 hfsplus_get_perms(inode, &file->permissions, 0); 674 inode->i_nlink = 1; 675 if (S_ISREG(inode->i_mode)) { 676 if (file->permissions.dev) 677 inode->i_nlink = be32_to_cpu(file->permissions.dev); 678 inode->i_op = &hfsplus_file_inode_operations; 679 inode->i_fop = &hfsplus_file_operations; 680 inode->i_mapping->a_ops = &hfsplus_aops; 681 } else if (S_ISLNK(inode->i_mode)) { 682 inode->i_op = &page_symlink_inode_operations; 683 inode->i_mapping->a_ops = &hfsplus_aops; 684 } else { 685 init_special_inode(inode, inode->i_mode, 686 be32_to_cpu(file->permissions.dev)); 687 } 688 inode->i_atime = hfsp_mt2ut(file->access_date); 689 inode->i_mtime = hfsp_mt2ut(file->content_mod_date); 690 inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date); 691 HFSPLUS_I(inode).create_date = file->create_date; 692 } else { 693 printk(KERN_ERR "hfs: bad catalog entry used to create inode\n"); 694 res = -EIO; 695 } 696 return res; 697} 698 699int hfsplus_cat_write_inode(hfsplus_handle_t *hfsplus_handle, struct inode *inode) 700{ 701 struct inode *main_inode = inode; 702 struct hfs_find_data fd; 703 hfsplus_cat_entry entry; 704 705 if (HFSPLUS_IS_RSRC(inode)) 706 main_inode = HFSPLUS_I(inode).rsrc_inode; 707 708 if (!main_inode->i_nlink) 709 return 0; 710 711 if (hfsplus_handle->journaled != HFSPLUS_JOURNAL_PRESENT) { 712 if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb).cat_tree, &fd)) 713 /* panic? */ 714 return -EIO; 715 } else { 716 if (hfsplus_journalled_find_init(HFSPLUS_SB(main_inode->i_sb).cat_tree, &fd)) 717 /* panic? */ 718 return -EIO; 719 } 720 721 if (hfsplus_find_cat(hfsplus_handle, main_inode->i_sb, main_inode->i_ino, &fd)) 722 /* panic? */ 723 goto out; 724 725 if (S_ISDIR(main_inode->i_mode)) { 726 struct hfsplus_cat_folder *folder = &entry.folder; 727 728 if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) 729 /* panic? */; 730 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, 731 sizeof(struct hfsplus_cat_folder)); 732 /* simple node checks? */ 733 hfsplus_cat_set_perms(inode, &folder->permissions); 734 folder->access_date = hfsp_ut2mt(inode->i_atime); 735 folder->content_mod_date = hfsp_ut2mt(inode->i_mtime); 736 folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); 737 folder->valence = cpu_to_be32(inode->i_size - 2); 738 hfs_bnode_write(hfsplus_handle, fd.bnode, &entry, fd.entryoffset, 739 sizeof(struct hfsplus_cat_folder)); 740 } else if (HFSPLUS_IS_RSRC(inode)) { 741 struct hfsplus_cat_file *file = &entry.file; 742 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, 743 sizeof(struct hfsplus_cat_file)); 744 hfsplus_inode_write_fork(inode, &file->rsrc_fork); 745 hfs_bnode_write(hfsplus_handle, fd.bnode, &entry, fd.entryoffset, 746 sizeof(struct hfsplus_cat_file)); 747 } else { 748 struct hfsplus_cat_file *file = &entry.file; 749 750 if (fd.entrylength < sizeof(struct hfsplus_cat_file)) 751 /* panic? */; 752 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, 753 sizeof(struct hfsplus_cat_file)); 754 hfsplus_inode_write_fork(inode, &file->data_fork); 755 hfsplus_cat_set_perms(inode, &file->permissions); 756 if (HFSPLUS_FLG_IMMUTABLE & 757 (file->permissions.rootflags | 758 file->permissions.userflags)) 759 file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED); 760 else 761 file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED); 762 file->access_date = hfsp_ut2mt(inode->i_atime); 763 file->content_mod_date = hfsp_ut2mt(inode->i_mtime); 764 file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); 765 hfs_bnode_write(hfsplus_handle, fd.bnode, &entry, fd.entryoffset, 766 sizeof(struct hfsplus_cat_file)); 767 } 768 769out: 770 if (hfsplus_handle->journaled != HFSPLUS_JOURNAL_PRESENT) { 771 hfs_find_exit(hfsplus_handle, &fd); 772 } else { 773 hfsplus_journalled_find_exit(hfsplus_handle, &fd); 774 } 775 return 0; 776} 777