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Processed redo log actions associated to undoing a CompensationlogRecord

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At least when there is a shortage of space on the target device, several
redo actions are associated to undoing a CompensationlogRecord, and they
should be redone upon recovery.
This commit is contained in:
Jean-Pierre André 2017-10-26 10:44:36 +02:00
parent f06672a02c
commit 1f863fef7d
1 changed files with 65 additions and 31 deletions
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74
ntfsprogs/playlog.c
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@ -2130,7 +2130,7 @@ static int redo_delete_file(ntfs_volume *vol,
record = (MFT_RECORD*)buffer;
if ((target + length) <= mftrecsz) {
/* write a void mft entry (needed ?) */
changed = memcmp(buffer + target, data, length)
changed = (length && memcmp(buffer + target, data, length))
|| (record->flags & MFT_RECORD_IN_USE);
err = 0;
if (changed) {
@ -2170,7 +2170,6 @@ static int redo_delete_index(ntfs_volume *vol,
data = ((const char*)&action->record)
+ get_undo_offset(&action->record);
length = le16_to_cpu(action->record.undo_length);
// TODO merge with undo_add_index ?
target = le16_to_cpu(action->record.record_offset)
+ le16_to_cpu(action->record.attribute_offset);
if (optv > 1) {
@ -2189,7 +2188,9 @@ static int redo_delete_index(ntfs_volume *vol,
&& !(length & 7)
&& ((target + length) <= xsize)) {
/* This has to be an idempotent action */
found = !memcmp(buffer + target, data, length);
found = (action->record.undo_operation
== const_cpu_to_le16(CompensationlogRecord))
|| !memcmp(buffer + target, data, length);
err = 0;
if (found) {
/* Remove the entry */
@ -2204,7 +2205,7 @@ static int redo_delete_index(ntfs_volume *vol,
}
if (optv > 1) {
printf("-> INDX record %s\n",
(found ? "unchanged" : "removed"));
(found ? "removed" : "unchanged"));
}
}
return (err);
@ -2251,7 +2252,9 @@ static int redo_delete_root_index(ntfs_volume *vol,
&& !(length & 7)
&& ((target + length) <= mftrecsz)) {
/* This has to be an idempotent action */
found = !memcmp(buffer + target, data, length);
found = (action->record.undo_operation
== const_cpu_to_le16(CompensationlogRecord))
|| !memcmp(buffer + target, data, length);
err = 0;
/* Only delete if present */
if (found) {
@ -2591,7 +2594,9 @@ static int redo_update_resident(ntfs_volume *vol,
dump(&buffer[target], length);
}
if ((target + length) <= mftrecsz) {
changed = memcmp(buffer + target, data, length);
changed = (action->record.undo_operation
== const_cpu_to_le16(CompensationlogRecord))
|| memcmp(buffer + target, data, length);
err = 0;
if (changed) {
memcpy(buffer + target, data, length);
@ -2640,8 +2645,13 @@ static int redo_update_root_index(ntfs_volume *vol,
+ le16_to_cpu(action->record.attribute_offset)
+ offsetof(INDEX_ENTRY, key.file_name.file_name_length)
- length;
err = change_resident_expect(vol, action, buffer, data, expected,
target, length, AT_INDEX_ROOT);
if (action->record.undo_operation
== const_cpu_to_le16(CompensationlogRecord))
err = change_resident(vol, action, buffer, data,
target, length);
else
err = change_resident_expect(vol, action, buffer, data,
expected, target, length, AT_INDEX_ROOT);
return (err);
}
@ -4104,8 +4114,10 @@ static int distribute_redos(ntfs_volume *vol,
err = redo_add_root_index(vol, action, buffer);
break;
case ClearBitsInNonResidentBitMap :
if (action->record.undo_operation
if ((action->record.undo_operation
== const_cpu_to_le16(SetBitsInNonResidentBitMap))
|| (action->record.undo_operation
== const_cpu_to_le16(CompensationlogRecord)))
err = redo_force_bits(vol, action, buffer);
break;
case CompensationlogRecord :
@ -4114,28 +4126,38 @@ static int distribute_redos(ntfs_volume *vol,
err = redo_compensate(vol, action, buffer);
break;
case CreateAttribute :
if (action->record.undo_operation
if ((action->record.undo_operation
== const_cpu_to_le16(DeleteAttribute))
|| (action->record.undo_operation
== const_cpu_to_le16(CompensationlogRecord)))
err = redo_create_attribute(vol, action, buffer);
break;
case DeallocateFileRecordSegment :
if (action->record.undo_operation
if ((action->record.undo_operation
== const_cpu_to_le16(InitializeFileRecordSegment))
|| (action->record.undo_operation
== const_cpu_to_le16(CompensationlogRecord)))
err = redo_delete_file(vol, action, buffer);
break;
case DeleteAttribute :
if (action->record.undo_operation
if ((action->record.undo_operation
== const_cpu_to_le16(CreateAttribute))
|| (action->record.undo_operation
== const_cpu_to_le16(CompensationlogRecord)))
err = redo_delete_attribute(vol, action, buffer);
break;
case DeleteIndexEntryAllocation :
if (action->record.undo_operation
if ((action->record.undo_operation
== const_cpu_to_le16(AddIndexEntryAllocation))
|| (action->record.undo_operation
== const_cpu_to_le16(CompensationlogRecord)))
err = redo_delete_index(vol, action, buffer);
break;
case DeleteIndexEntryRoot :
if (action->record.undo_operation
if ((action->record.undo_operation
== const_cpu_to_le16(AddIndexEntryRoot))
|| (action->record.undo_operation
== const_cpu_to_le16(CompensationlogRecord)))
err = redo_delete_root_index(vol, action, buffer);
break;
case InitializeFileRecordSegment :
@ -4154,8 +4176,10 @@ static int distribute_redos(ntfs_volume *vol,
err = redo_force_bits(vol, action, buffer);
break;
case SetIndexEntryVcnAllocation :
if (action->record.undo_operation
if ((action->record.undo_operation
== const_cpu_to_le16(SetIndexEntryVcnAllocation))
|| (action->record.undo_operation
== const_cpu_to_le16(CompensationlogRecord)))
err = redo_update_vcn(vol, action, buffer);
break;
case SetIndexEntryVcnRoot :
@ -4164,18 +4188,24 @@ static int distribute_redos(ntfs_volume *vol,
err = redo_update_root_vcn(vol, action, buffer);
break;
case SetNewAttributeSizes :
if (action->record.undo_operation
if ((action->record.undo_operation
== const_cpu_to_le16(SetNewAttributeSizes))
|| (action->record.undo_operation
== const_cpu_to_le16(CompensationlogRecord)))
err = redo_sizes(vol, action, buffer);
break;
case UpdateFileNameAllocation :
if (action->record.undo_operation
if ((action->record.undo_operation
== const_cpu_to_le16(UpdateFileNameAllocation))
|| (action->record.undo_operation
== const_cpu_to_le16(CompensationlogRecord)))
err = redo_update_index(vol, action, buffer);
break;
case UpdateFileNameRoot :
if (action->record.undo_operation
if ((action->record.undo_operation
== const_cpu_to_le16(UpdateFileNameRoot))
|| (action->record.undo_operation
== const_cpu_to_le16(CompensationlogRecord)))
err = redo_update_root_index(vol, action, buffer);
break;
case UpdateMappingPairs :
@ -4197,8 +4227,10 @@ static int distribute_redos(ntfs_volume *vol,
}
break;
case UpdateResidentValue :
if (action->record.undo_operation
if ((action->record.undo_operation
== const_cpu_to_le16(UpdateResidentValue))
|| (action->record.undo_operation
== const_cpu_to_le16(CompensationlogRecord)))
err = redo_update_resident(vol, action, buffer);
break;
case Win10Action37 :
@ -4212,8 +4244,10 @@ static int distribute_redos(ntfs_volume *vol,
err = redo_write_end(vol, action, buffer);
break;
case WriteEndOfIndexBuffer :
if (action->record.undo_operation
if ((action->record.undo_operation
== const_cpu_to_le16(WriteEndOfIndexBuffer))
|| (action->record.undo_operation
== const_cpu_to_le16(CompensationlogRecord)))
err = redo_write_index(vol, action, buffer);
break;
case AttributeNamesDump :