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-rw-r--r--fs/ntfs/inode.c491
1 files changed, 458 insertions, 33 deletions
diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c
index 7ec045131808..a1682342baa6 100644
--- a/fs/ntfs/inode.c
+++ b/fs/ntfs/inode.c
@@ -30,6 +30,7 @@
30#include "debug.h" 30#include "debug.h"
31#include "inode.h" 31#include "inode.h"
32#include "attrib.h" 32#include "attrib.h"
33#include "lcnalloc.h"
33#include "malloc.h" 34#include "malloc.h"
34#include "mft.h" 35#include "mft.h"
35#include "time.h" 36#include "time.h"
@@ -2291,11 +2292,16 @@ int ntfs_show_options(struct seq_file *sf, struct vfsmount *mnt)
2291 2292
2292#ifdef NTFS_RW 2293#ifdef NTFS_RW
2293 2294
2295static const char *es = " Leaving inconsistent metadata. Unmount and run "
2296 "chkdsk.";
2297
2294/** 2298/**
2295 * ntfs_truncate - called when the i_size of an ntfs inode is changed 2299 * ntfs_truncate - called when the i_size of an ntfs inode is changed
2296 * @vi: inode for which the i_size was changed 2300 * @vi: inode for which the i_size was changed
2297 * 2301 *
2298 * We do not support i_size changes yet. 2302 * We only support i_size changes for normal files at present, i.e. not
2303 * compressed and not encrypted. This is enforced in ntfs_setattr(), see
2304 * below.
2299 * 2305 *
2300 * The kernel guarantees that @vi is a regular file (S_ISREG() is true) and 2306 * The kernel guarantees that @vi is a regular file (S_ISREG() is true) and
2301 * that the change is allowed. 2307 * that the change is allowed.
@@ -2306,80 +2312,499 @@ int ntfs_show_options(struct seq_file *sf, struct vfsmount *mnt)
2306 * Returns 0 on success or -errno on error. 2312 * Returns 0 on success or -errno on error.
2307 * 2313 *
2308 * Called with ->i_sem held. In all but one case ->i_alloc_sem is held for 2314 * Called with ->i_sem held. In all but one case ->i_alloc_sem is held for
2309 * writing. The only case where ->i_alloc_sem is not held is 2315 * writing. The only case in the kernel where ->i_alloc_sem is not held is
2310 * mm/filemap.c::generic_file_buffered_write() where vmtruncate() is called 2316 * mm/filemap.c::generic_file_buffered_write() where vmtruncate() is called
2311 * with the current i_size as the offset which means that it is a noop as far 2317 * with the current i_size as the offset. The analogous place in NTFS is in
2312 * as ntfs_truncate() is concerned. 2318 * fs/ntfs/file.c::ntfs_file_buffered_write() where we call vmtruncate() again
2319 * without holding ->i_alloc_sem.
2313 */ 2320 */
2314int ntfs_truncate(struct inode *vi) 2321int ntfs_truncate(struct inode *vi)
2315{ 2322{
2316 ntfs_inode *ni = NTFS_I(vi); 2323 s64 new_size, old_size, nr_freed, new_alloc_size, old_alloc_size;
2324 VCN highest_vcn;
2325 unsigned long flags;
2326 ntfs_inode *base_ni, *ni = NTFS_I(vi);
2317 ntfs_volume *vol = ni->vol; 2327 ntfs_volume *vol = ni->vol;
2318 ntfs_attr_search_ctx *ctx; 2328 ntfs_attr_search_ctx *ctx;
2319 MFT_RECORD *m; 2329 MFT_RECORD *m;
2320 ATTR_RECORD *a; 2330 ATTR_RECORD *a;
2321 const char *te = " Leaving file length out of sync with i_size."; 2331 const char *te = " Leaving file length out of sync with i_size.";
2322 int err; 2332 int err, mp_size, size_change, alloc_change;
2333 u32 attr_len;
2323 2334
2324 ntfs_debug("Entering for inode 0x%lx.", vi->i_ino); 2335 ntfs_debug("Entering for inode 0x%lx.", vi->i_ino);
2325 BUG_ON(NInoAttr(ni)); 2336 BUG_ON(NInoAttr(ni));
2337 BUG_ON(S_ISDIR(vi->i_mode));
2338 BUG_ON(NInoMstProtected(ni));
2326 BUG_ON(ni->nr_extents < 0); 2339 BUG_ON(ni->nr_extents < 0);
2327 m = map_mft_record(ni); 2340retry_truncate:
2341 /*
2342 * Lock the runlist for writing and map the mft record to ensure it is
2343 * safe to mess with the attribute runlist and sizes.
2344 */
2345 down_write(&ni->runlist.lock);
2346 if (!NInoAttr(ni))
2347 base_ni = ni;
2348 else
2349 base_ni = ni->ext.base_ntfs_ino;
2350 m = map_mft_record(base_ni);
2328 if (IS_ERR(m)) { 2351 if (IS_ERR(m)) {
2329 err = PTR_ERR(m); 2352 err = PTR_ERR(m);
2330 ntfs_error(vi->i_sb, "Failed to map mft record for inode 0x%lx " 2353 ntfs_error(vi->i_sb, "Failed to map mft record for inode 0x%lx "
2331 "(error code %d).%s", vi->i_ino, err, te); 2354 "(error code %d).%s", vi->i_ino, err, te);
2332 ctx = NULL; 2355 ctx = NULL;
2333 m = NULL; 2356 m = NULL;
2334 goto err_out; 2357 goto old_bad_out;
2335 } 2358 }
2336 ctx = ntfs_attr_get_search_ctx(ni, m); 2359 ctx = ntfs_attr_get_search_ctx(base_ni, m);
2337 if (unlikely(!ctx)) { 2360 if (unlikely(!ctx)) {
2338 ntfs_error(vi->i_sb, "Failed to allocate a search context for " 2361 ntfs_error(vi->i_sb, "Failed to allocate a search context for "
2339 "inode 0x%lx (not enough memory).%s", 2362 "inode 0x%lx (not enough memory).%s",
2340 vi->i_ino, te); 2363 vi->i_ino, te);
2341 err = -ENOMEM; 2364 err = -ENOMEM;
2342 goto err_out; 2365 goto old_bad_out;
2343 } 2366 }
2344 err = ntfs_attr_lookup(ni->type, ni->name, ni->name_len, 2367 err = ntfs_attr_lookup(ni->type, ni->name, ni->name_len,
2345 CASE_SENSITIVE, 0, NULL, 0, ctx); 2368 CASE_SENSITIVE, 0, NULL, 0, ctx);
2346 if (unlikely(err)) { 2369 if (unlikely(err)) {
2347 if (err == -ENOENT) 2370 if (err == -ENOENT) {
2348 ntfs_error(vi->i_sb, "Open attribute is missing from " 2371 ntfs_error(vi->i_sb, "Open attribute is missing from "
2349 "mft record. Inode 0x%lx is corrupt. " 2372 "mft record. Inode 0x%lx is corrupt. "
2350 "Run chkdsk.", vi->i_ino); 2373 "Run chkdsk.%s", vi->i_ino, te);
2351 else 2374 err = -EIO;
2375 } else
2352 ntfs_error(vi->i_sb, "Failed to lookup attribute in " 2376 ntfs_error(vi->i_sb, "Failed to lookup attribute in "
2353 "inode 0x%lx (error code %d).", 2377 "inode 0x%lx (error code %d).%s",
2354 vi->i_ino, err); 2378 vi->i_ino, err, te);
2355 goto err_out; 2379 goto old_bad_out;
2356 } 2380 }
2381 m = ctx->mrec;
2357 a = ctx->attr; 2382 a = ctx->attr;
2358 /* If the size has not changed there is nothing to do. */ 2383 /*
2359 if (ntfs_attr_size(a) == i_size_read(vi)) 2384 * The i_size of the vfs inode is the new size for the attribute value.
2360 goto done; 2385 */
2361 // TODO: Implement the truncate... 2386 new_size = i_size_read(vi);
2362 ntfs_error(vi->i_sb, "Inode size has changed but this is not " 2387 /* The current size of the attribute value is the old size. */
2363 "implemented yet. Resetting inode size to old value. " 2388 old_size = ntfs_attr_size(a);
2364 " This is most likely a bug in the ntfs driver!"); 2389 /* Calculate the new allocated size. */
2365 i_size_write(vi, ntfs_attr_size(a)); 2390 if (NInoNonResident(ni))
2366done: 2391 new_alloc_size = (new_size + vol->cluster_size - 1) &
2392 ~(s64)vol->cluster_size_mask;
2393 else
2394 new_alloc_size = (new_size + 7) & ~7;
2395 /* The current allocated size is the old allocated size. */
2396 read_lock_irqsave(&ni->size_lock, flags);
2397 old_alloc_size = ni->allocated_size;
2398 read_unlock_irqrestore(&ni->size_lock, flags);
2399 /*
2400 * The change in the file size. This will be 0 if no change, >0 if the
2401 * size is growing, and <0 if the size is shrinking.
2402 */
2403 size_change = -1;
2404 if (new_size - old_size >= 0) {
2405 size_change = 1;
2406 if (new_size == old_size)
2407 size_change = 0;
2408 }
2409 /* As above for the allocated size. */
2410 alloc_change = -1;
2411 if (new_alloc_size - old_alloc_size >= 0) {
2412 alloc_change = 1;
2413 if (new_alloc_size == old_alloc_size)
2414 alloc_change = 0;
2415 }
2416 /*
2417 * If neither the size nor the allocation are being changed there is
2418 * nothing to do.
2419 */
2420 if (!size_change && !alloc_change)
2421 goto unm_done;
2422 /* If the size is changing, check if new size is allowed in $AttrDef. */
2423 if (size_change) {
2424 err = ntfs_attr_size_bounds_check(vol, ni->type, new_size);
2425 if (unlikely(err)) {
2426 if (err == -ERANGE) {
2427 ntfs_error(vol->sb, "Truncate would cause the "
2428 "inode 0x%lx to %simum size "
2429 "for its attribute type "
2430 "(0x%x). Aborting truncate.",
2431 vi->i_ino,
2432 new_size > old_size ? "exceed "
2433 "the max" : "go under the min",
2434 le32_to_cpu(ni->type));
2435 err = -EFBIG;
2436 } else {
2437 ntfs_error(vol->sb, "Inode 0x%lx has unknown "
2438 "attribute type 0x%x. "
2439 "Aborting truncate.",
2440 vi->i_ino,
2441 le32_to_cpu(ni->type));
2442 err = -EIO;
2443 }
2444 /* Reset the vfs inode size to the old size. */
2445 i_size_write(vi, old_size);
2446 goto err_out;
2447 }
2448 }
2449 if (NInoCompressed(ni) || NInoEncrypted(ni)) {
2450 ntfs_warning(vi->i_sb, "Changes in inode size are not "
2451 "supported yet for %s files, ignoring.",
2452 NInoCompressed(ni) ? "compressed" :
2453 "encrypted");
2454 err = -EOPNOTSUPP;
2455 goto bad_out;
2456 }
2457 if (a->non_resident)
2458 goto do_non_resident_truncate;
2459 BUG_ON(NInoNonResident(ni));
2460 /* Resize the attribute record to best fit the new attribute size. */
2461 if (new_size < vol->mft_record_size &&
2462 !ntfs_resident_attr_value_resize(m, a, new_size)) {
2463 unsigned long flags;
2464
2465 /* The resize succeeded! */
2466 flush_dcache_mft_record_page(ctx->ntfs_ino);
2467 mark_mft_record_dirty(ctx->ntfs_ino);
2468 write_lock_irqsave(&ni->size_lock, flags);
2469 /* Update the sizes in the ntfs inode and all is done. */
2470 ni->allocated_size = le32_to_cpu(a->length) -
2471 le16_to_cpu(a->data.resident.value_offset);
2472 /*
2473 * Note ntfs_resident_attr_value_resize() has already done any
2474 * necessary data clearing in the attribute record. When the
2475 * file is being shrunk vmtruncate() will already have cleared
2476 * the top part of the last partial page, i.e. since this is
2477 * the resident case this is the page with index 0. However,
2478 * when the file is being expanded, the page cache page data
2479 * between the old data_size, i.e. old_size, and the new_size
2480 * has not been zeroed. Fortunately, we do not need to zero it
2481 * either since on one hand it will either already be zero due
2482 * to both readpage and writepage clearing partial page data
2483 * beyond i_size in which case there is nothing to do or in the
2484 * case of the file being mmap()ped at the same time, POSIX
2485 * specifies that the behaviour is unspecified thus we do not
2486 * have to do anything. This means that in our implementation
2487 * in the rare case that the file is mmap()ped and a write
2488 * occured into the mmap()ped region just beyond the file size
2489 * and writepage has not yet been called to write out the page
2490 * (which would clear the area beyond the file size) and we now
2491 * extend the file size to incorporate this dirty region
2492 * outside the file size, a write of the page would result in
2493 * this data being written to disk instead of being cleared.
2494 * Given both POSIX and the Linux mmap(2) man page specify that
2495 * this corner case is undefined, we choose to leave it like
2496 * that as this is much simpler for us as we cannot lock the
2497 * relevant page now since we are holding too many ntfs locks
2498 * which would result in a lock reversal deadlock.
2499 */
2500 ni->initialized_size = new_size;
2501 write_unlock_irqrestore(&ni->size_lock, flags);
2502 goto unm_done;
2503 }
2504 /* If the above resize failed, this must be an attribute extension. */
2505 BUG_ON(size_change < 0);
2506 /*
2507 * We have to drop all the locks so we can call
2508 * ntfs_attr_make_non_resident(). This could be optimised by try-
2509 * locking the first page cache page and only if that fails dropping
2510 * the locks, locking the page, and redoing all the locking and
2511 * lookups. While this would be a huge optimisation, it is not worth
2512 * it as this is definitely a slow code path as it only ever can happen
2513 * once for any given file.
2514 */
2367 ntfs_attr_put_search_ctx(ctx); 2515 ntfs_attr_put_search_ctx(ctx);
2368 unmap_mft_record(ni); 2516 unmap_mft_record(base_ni);
2369 NInoClearTruncateFailed(ni); 2517 up_write(&ni->runlist.lock);
2370 ntfs_debug("Done."); 2518 /*
2371 return 0; 2519 * Not enough space in the mft record, try to make the attribute
2372err_out: 2520 * non-resident and if successful restart the truncation process.
2373 if (err != -ENOMEM) { 2521 */
2522 err = ntfs_attr_make_non_resident(ni, old_size);
2523 if (likely(!err))
2524 goto retry_truncate;
2525 /*
2526 * Could not make non-resident. If this is due to this not being
2527 * permitted for this attribute type or there not being enough space,
2528 * try to make other attributes non-resident. Otherwise fail.
2529 */
2530 if (unlikely(err != -EPERM && err != -ENOSPC)) {
2531 ntfs_error(vol->sb, "Cannot truncate inode 0x%lx, attribute "
2532 "type 0x%x, because the conversion from "
2533 "resident to non-resident attribute failed "
2534 "with error code %i.", vi->i_ino,
2535 (unsigned)le32_to_cpu(ni->type), err);
2536 if (err != -ENOMEM)
2537 err = -EIO;
2538 goto conv_err_out;
2539 }
2540 /* TODO: Not implemented from here, abort. */
2541 if (err == -ENOSPC)
2542 ntfs_error(vol->sb, "Not enough space in the mft record/on "
2543 "disk for the non-resident attribute value. "
2544 "This case is not implemented yet.");
2545 else /* if (err == -EPERM) */
2546 ntfs_error(vol->sb, "This attribute type may not be "
2547 "non-resident. This case is not implemented "
2548 "yet.");
2549 err = -EOPNOTSUPP;
2550 goto conv_err_out;
2551#if 0
2552 // TODO: Attempt to make other attributes non-resident.
2553 if (!err)
2554 goto do_resident_extend;
2555 /*
2556 * Both the attribute list attribute and the standard information
2557 * attribute must remain in the base inode. Thus, if this is one of
2558 * these attributes, we have to try to move other attributes out into
2559 * extent mft records instead.
2560 */
2561 if (ni->type == AT_ATTRIBUTE_LIST ||
2562 ni->type == AT_STANDARD_INFORMATION) {
2563 // TODO: Attempt to move other attributes into extent mft
2564 // records.
2565 err = -EOPNOTSUPP;
2566 if (!err)
2567 goto do_resident_extend;
2568 goto err_out;
2569 }
2570 // TODO: Attempt to move this attribute to an extent mft record, but
2571 // only if it is not already the only attribute in an mft record in
2572 // which case there would be nothing to gain.
2573 err = -EOPNOTSUPP;
2574 if (!err)
2575 goto do_resident_extend;
2576 /* There is nothing we can do to make enough space. )-: */
2577 goto err_out;
2578#endif
2579do_non_resident_truncate:
2580 BUG_ON(!NInoNonResident(ni));
2581 if (alloc_change < 0) {
2582 highest_vcn = sle64_to_cpu(a->data.non_resident.highest_vcn);
2583 if (highest_vcn > 0 &&
2584 old_alloc_size >> vol->cluster_size_bits >
2585 highest_vcn + 1) {
2586 /*
2587 * This attribute has multiple extents. Not yet
2588 * supported.
2589 */
2590 ntfs_error(vol->sb, "Cannot truncate inode 0x%lx, "
2591 "attribute type 0x%x, because the "
2592 "attribute is highly fragmented (it "
2593 "consists of multiple extents) and "
2594 "this case is not implemented yet.",
2595 vi->i_ino,
2596 (unsigned)le32_to_cpu(ni->type));
2597 err = -EOPNOTSUPP;
2598 goto bad_out;
2599 }
2600 }
2601 /*
2602 * If the size is shrinking, need to reduce the initialized_size and
2603 * the data_size before reducing the allocation.
2604 */
2605 if (size_change < 0) {
2606 /*
2607 * Make the valid size smaller (i_size is already up-to-date).
2608 */
2609 write_lock_irqsave(&ni->size_lock, flags);
2610 if (new_size < ni->initialized_size) {
2611 ni->initialized_size = new_size;
2612 a->data.non_resident.initialized_size =
2613 cpu_to_sle64(new_size);
2614 }
2615 a->data.non_resident.data_size = cpu_to_sle64(new_size);
2616 write_unlock_irqrestore(&ni->size_lock, flags);
2617 flush_dcache_mft_record_page(ctx->ntfs_ino);
2618 mark_mft_record_dirty(ctx->ntfs_ino);
2619 /* If the allocated size is not changing, we are done. */
2620 if (!alloc_change)
2621 goto unm_done;
2622 /*
2623 * If the size is shrinking it makes no sense for the
2624 * allocation to be growing.
2625 */
2626 BUG_ON(alloc_change > 0);
2627 } else /* if (size_change >= 0) */ {
2628 /*
2629 * The file size is growing or staying the same but the
2630 * allocation can be shrinking, growing or staying the same.
2631 */
2632 if (alloc_change > 0) {
2633 /*
2634 * We need to extend the allocation and possibly update
2635 * the data size. If we are updating the data size,
2636 * since we are not touching the initialized_size we do
2637 * not need to worry about the actual data on disk.
2638 * And as far as the page cache is concerned, there
2639 * will be no pages beyond the old data size and any
2640 * partial region in the last page between the old and
2641 * new data size (or the end of the page if the new
2642 * data size is outside the page) does not need to be
2643 * modified as explained above for the resident
2644 * attribute truncate case. To do this, we simply drop
2645 * the locks we hold and leave all the work to our
2646 * friendly helper ntfs_attr_extend_allocation().
2647 */
2648 ntfs_attr_put_search_ctx(ctx);
2649 unmap_mft_record(base_ni);
2650 up_write(&ni->runlist.lock);
2651 err = ntfs_attr_extend_allocation(ni, new_size,
2652 size_change > 0 ? new_size : -1, -1);
2653 /*
2654 * ntfs_attr_extend_allocation() will have done error
2655 * output already.
2656 */
2657 goto done;
2658 }
2659 if (!alloc_change)
2660 goto alloc_done;
2661 }
2662 /* alloc_change < 0 */
2663 /* Free the clusters. */
2664 nr_freed = ntfs_cluster_free(ni, new_alloc_size >>
2665 vol->cluster_size_bits, -1, ctx);
2666 m = ctx->mrec;
2667 a = ctx->attr;
2668 if (unlikely(nr_freed < 0)) {
2669 ntfs_error(vol->sb, "Failed to release cluster(s) (error code "
2670 "%lli). Unmount and run chkdsk to recover "
2671 "the lost cluster(s).", (long long)nr_freed);
2374 NVolSetErrors(vol); 2672 NVolSetErrors(vol);
2673 nr_freed = 0;
2674 }
2675 /* Truncate the runlist. */
2676 err = ntfs_rl_truncate_nolock(vol, &ni->runlist,
2677 new_alloc_size >> vol->cluster_size_bits);
2678 /*
2679 * If the runlist truncation failed and/or the search context is no
2680 * longer valid, we cannot resize the attribute record or build the
2681 * mapping pairs array thus we mark the inode bad so that no access to
2682 * the freed clusters can happen.
2683 */
2684 if (unlikely(err || IS_ERR(m))) {
2685 ntfs_error(vol->sb, "Failed to %s (error code %li).%s",
2686 IS_ERR(m) ?
2687 "restore attribute search context" :
2688 "truncate attribute runlist",
2689 IS_ERR(m) ? PTR_ERR(m) : err, es);
2690 err = -EIO;
2691 goto bad_out;
2692 }
2693 /* Get the size for the shrunk mapping pairs array for the runlist. */
2694 mp_size = ntfs_get_size_for_mapping_pairs(vol, ni->runlist.rl, 0, -1);
2695 if (unlikely(mp_size <= 0)) {
2696 ntfs_error(vol->sb, "Cannot shrink allocation of inode 0x%lx, "
2697 "attribute type 0x%x, because determining the "
2698 "size for the mapping pairs failed with error "
2699 "code %i.%s", vi->i_ino,
2700 (unsigned)le32_to_cpu(ni->type), mp_size, es);
2701 err = -EIO;
2702 goto bad_out;
2703 }
2704 /*
2705 * Shrink the attribute record for the new mapping pairs array. Note,
2706 * this cannot fail since we are making the attribute smaller thus by
2707 * definition there is enough space to do so.
2708 */
2709 attr_len = le32_to_cpu(a->length);
2710 err = ntfs_attr_record_resize(m, a, mp_size +
2711 le16_to_cpu(a->data.non_resident.mapping_pairs_offset));
2712 BUG_ON(err);
2713 /*
2714 * Generate the mapping pairs array directly into the attribute record.
2715 */
2716 err = ntfs_mapping_pairs_build(vol, (u8*)a +
2717 le16_to_cpu(a->data.non_resident.mapping_pairs_offset),
2718 mp_size, ni->runlist.rl, 0, -1, NULL);
2719 if (unlikely(err)) {
2720 ntfs_error(vol->sb, "Cannot shrink allocation of inode 0x%lx, "
2721 "attribute type 0x%x, because building the "
2722 "mapping pairs failed with error code %i.%s",
2723 vi->i_ino, (unsigned)le32_to_cpu(ni->type),
2724 err, es);
2725 err = -EIO;
2726 goto bad_out;
2727 }
2728 /* Update the allocated/compressed size as well as the highest vcn. */
2729 a->data.non_resident.highest_vcn = cpu_to_sle64((new_alloc_size >>
2730 vol->cluster_size_bits) - 1);
2731 write_lock_irqsave(&ni->size_lock, flags);
2732 ni->allocated_size = new_alloc_size;
2733 a->data.non_resident.allocated_size = cpu_to_sle64(new_alloc_size);
2734 if (NInoSparse(ni) || NInoCompressed(ni)) {
2735 if (nr_freed) {
2736 ni->itype.compressed.size -= nr_freed <<
2737 vol->cluster_size_bits;
2738 BUG_ON(ni->itype.compressed.size < 0);
2739 a->data.non_resident.compressed_size = cpu_to_sle64(
2740 ni->itype.compressed.size);
2741 vi->i_blocks = ni->itype.compressed.size >> 9;
2742 }
2743 } else
2744 vi->i_blocks = new_alloc_size >> 9;
2745 write_unlock_irqrestore(&ni->size_lock, flags);
2746 /*
2747 * We have shrunk the allocation. If this is a shrinking truncate we
2748 * have already dealt with the initialized_size and the data_size above
2749 * and we are done. If the truncate is only changing the allocation
2750 * and not the data_size, we are also done. If this is an extending
2751 * truncate, need to extend the data_size now which is ensured by the
2752 * fact that @size_change is positive.
2753 */
2754alloc_done:
2755 /*
2756 * If the size is growing, need to update it now. If it is shrinking,
2757 * we have already updated it above (before the allocation change).
2758 */
2759 if (size_change > 0)
2760 a->data.non_resident.data_size = cpu_to_sle64(new_size);
2761 /* Ensure the modified mft record is written out. */
2762 flush_dcache_mft_record_page(ctx->ntfs_ino);
2763 mark_mft_record_dirty(ctx->ntfs_ino);
2764unm_done:
2765 ntfs_attr_put_search_ctx(ctx);
2766 unmap_mft_record(base_ni);
2767 up_write(&ni->runlist.lock);
2768done:
2769 /* Update the mtime and ctime on the base inode. */
2770 inode_update_time(VFS_I(base_ni), 1);
2771 if (likely(!err)) {
2772 NInoClearTruncateFailed(ni);
2773 ntfs_debug("Done.");
2774 }
2775 return err;
2776old_bad_out:
2777 old_size = -1;
2778bad_out:
2779 if (err != -ENOMEM && err != -EOPNOTSUPP) {
2375 make_bad_inode(vi); 2780 make_bad_inode(vi);
2781 make_bad_inode(VFS_I(base_ni));
2782 NVolSetErrors(vol);
2376 } 2783 }
2784 if (err != -EOPNOTSUPP)
2785 NInoSetTruncateFailed(ni);
2786 else if (old_size >= 0)
2787 i_size_write(vi, old_size);
2788err_out:
2377 if (ctx) 2789 if (ctx)
2378 ntfs_attr_put_search_ctx(ctx); 2790 ntfs_attr_put_search_ctx(ctx);
2379 if (m) 2791 if (m)
2380 unmap_mft_record(ni); 2792 unmap_mft_record(base_ni);
2381 NInoSetTruncateFailed(ni); 2793 up_write(&ni->runlist.lock);
2794out:
2795 ntfs_debug("Failed. Returning error code %i.", err);
2382 return err; 2796 return err;
2797conv_err_out:
2798 if (err != -ENOMEM && err != -EOPNOTSUPP) {
2799 make_bad_inode(vi);
2800 make_bad_inode(VFS_I(base_ni));
2801 NVolSetErrors(vol);
2802 }
2803 if (err != -EOPNOTSUPP)
2804 NInoSetTruncateFailed(ni);
2805 else
2806 i_size_write(vi, old_size);
2807 goto out;
2383} 2808}
2384 2809
2385/** 2810/**