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NTFS: Fix comparison of $MFT and $MFTMirr to not bail out when there are 

unused, invalid mft records which are the same in both $MFT and
      $MFTMirr.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
This commit is contained in:
Anton Altaparmakov 2006-03-23 15:34:13 +00:00
parent 78264bd9c2
commit 949763b2b8
2 changed files with 28 additions and 13 deletions
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3
fs/ntfs/ChangeLog
View File

@ -28,6 +28,9 @@ ToDo/Notes:
continued the attribute lookup loop instead of aborting it.
- Use buffer_migrate_page() for the ->migratepage function of all ntfs
address space operations.
- Fix comparison of $MFT and $MFTMirr to not bail out when there are
unused, invalid mft records which are the same in both $MFT and
$MFTMirr.
2.1.26 - Minor bug fixes and updates.

24
fs/ntfs/super.c
View File

@ -1099,26 +1099,38 @@ static BOOL check_mft_mirror(ntfs_volume *vol)
kmirr = page_address(mirr_page);
++index;
}
/* Do not check the record if it is not in use. */
if (((MFT_RECORD*)kmft)->flags & MFT_RECORD_IN_USE) {
/* Make sure the record is ok. */
if (ntfs_is_baad_recordp((le32*)kmft)) {
ntfs_error(sb, "Incomplete multi sector transfer "
"detected in mft record %i.", i);
ntfs_error(sb, "Incomplete multi sector "
"transfer detected in mft "
"record %i.", i);
mm_unmap_out:
ntfs_unmap_page(mirr_page);
mft_unmap_out:
ntfs_unmap_page(mft_page);
return FALSE;
}
}
/* Do not check the mirror record if it is not in use. */
if (((MFT_RECORD*)kmirr)->flags & MFT_RECORD_IN_USE) {
if (ntfs_is_baad_recordp((le32*)kmirr)) {
ntfs_error(sb, "Incomplete multi sector transfer "
"detected in mft mirror record %i.", i);
ntfs_error(sb, "Incomplete multi sector "
"transfer detected in mft "
"mirror record %i.", i);
goto mm_unmap_out;
}
}
/* Get the amount of data in the current record. */
bytes = le32_to_cpu(((MFT_RECORD*)kmft)->bytes_in_use);
if (!bytes || bytes > vol->mft_record_size) {
if (bytes < sizeof(MFT_RECORD_OLD) ||
bytes > vol->mft_record_size ||
ntfs_is_baad_recordp((le32*)kmft)) {
bytes = le32_to_cpu(((MFT_RECORD*)kmirr)->bytes_in_use);
if (!bytes || bytes > vol->mft_record_size)
if (bytes < sizeof(MFT_RECORD_OLD) ||
bytes > vol->mft_record_size ||
ntfs_is_baad_recordp((le32*)kmirr))
bytes = vol->mft_record_size;
}
/* Compare the two records. */