mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
729 lines
22 KiB
729 lines
22 KiB
/*++
|
|
|
|
Copyright (c) 1998 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
extract.cpp
|
|
|
|
Abstract:
|
|
|
|
SIS Groveler USN journal reading functions
|
|
|
|
Authors:
|
|
|
|
Cedric Krumbein, 1998
|
|
|
|
Environment:
|
|
|
|
User Mode
|
|
|
|
Revision History:
|
|
|
|
--*/
|
|
|
|
#include "all.hxx"
|
|
|
|
// NT Update Sequence Number (USN) journal definitions
|
|
|
|
#define USN_ADD_REASONS ( 0U \
|
|
| USN_REASON_DATA_OVERWRITE \
|
|
| USN_REASON_DATA_EXTEND \
|
|
| USN_REASON_DATA_TRUNCATION \
|
|
| USN_REASON_NAMED_DATA_OVERWRITE \
|
|
| USN_REASON_NAMED_DATA_EXTEND \
|
|
| USN_REASON_NAMED_DATA_TRUNCATION \
|
|
| USN_REASON_FILE_CREATE \
|
|
| USN_REASON_FILE_DELETE \
|
|
/* | USN_REASON_PROPERTY_CHANGE */ \
|
|
/* | USN_REASON_SECURITY_CHANGE */ \
|
|
/* | USN_REASON_RENAME_OLD_NAME */ \
|
|
/* | USN_REASON_RENAME_NEW_NAME */ \
|
|
| USN_REASON_INDEXABLE_CHANGE \
|
|
| USN_REASON_BASIC_INFO_CHANGE \
|
|
/* | USN_REASON_HARD_LINK_CHANGE */ \
|
|
| USN_REASON_COMPRESSION_CHANGE \
|
|
| USN_REASON_ENCRYPTION_CHANGE \
|
|
| USN_REASON_OBJECT_ID_CHANGE \
|
|
/* | USN_REASON_REPARSE_POINT_CHANGE */ \
|
|
| USN_REASON_CLOSE \
|
|
)
|
|
|
|
/*****************************************************************************/
|
|
|
|
// set_usn_log_size() sets the maximum size of this volume's USN journal.
|
|
|
|
GrovelStatus Groveler::set_usn_log_size(
|
|
IN DWORDLONG usn_log_size)
|
|
{
|
|
CREATE_USN_JOURNAL_DATA createUSN;
|
|
|
|
DWORD transferCount;
|
|
|
|
ASSERT(volumeHandle != NULL);
|
|
|
|
createUSN.MaximumSize = usn_log_size;
|
|
createUSN.AllocationDelta = USN_PAGE_SIZE;
|
|
|
|
// Set the maximum size of the USN journal.
|
|
|
|
if (!DeviceIoControl(
|
|
volumeHandle,
|
|
FSCTL_CREATE_USN_JOURNAL,
|
|
&createUSN,
|
|
sizeof(CREATE_USN_JOURNAL_DATA),
|
|
NULL,
|
|
0,
|
|
&transferCount,
|
|
NULL)) {
|
|
DPRINTF((_T("%s: error setting USN journal size: %lu\n"),
|
|
driveName, GetLastError()));
|
|
return Grovel_error;
|
|
}
|
|
|
|
TPRINTF((_T("%s: set USN journal size to %I64u\n"),
|
|
driveName, usn_log_size));
|
|
|
|
return Grovel_ok;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
// get_usn_log_size() returns the current size of this volume's USN journal.
|
|
|
|
GrovelStatus Groveler::get_usn_log_info(
|
|
OUT USN_JOURNAL_DATA *usnJournalData)
|
|
{
|
|
DWORD transferCount,
|
|
lastError;
|
|
|
|
BOOL success;
|
|
|
|
ASSERT(volumeHandle != NULL);
|
|
|
|
// Query the USN journal settings.
|
|
|
|
success = DeviceIoControl(
|
|
volumeHandle,
|
|
FSCTL_QUERY_USN_JOURNAL,
|
|
NULL,
|
|
0,
|
|
usnJournalData,
|
|
sizeof(USN_JOURNAL_DATA),
|
|
&transferCount,
|
|
NULL);
|
|
|
|
if (!success)
|
|
lastError = GetLastError();
|
|
else if (transferCount != sizeof(USN_JOURNAL_DATA)) {
|
|
lastError = 0;
|
|
success = FALSE;
|
|
}
|
|
|
|
if (!success) {
|
|
DPRINTF((_T("%s: error querying USN journal settings: %lu\n"),
|
|
driveName, lastError));
|
|
return Grovel_error;
|
|
}
|
|
|
|
TPRINTF((_T("%s: USN journal: ID=0x%I64x size=0x%I64x\n"),
|
|
driveName, usnJournalData->UsnJournalID,
|
|
usnJournalData->MaximumSize));
|
|
|
|
return Grovel_ok;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
// extract_log() reads this volume's USN journal.
|
|
|
|
// If the lastUSN parameter equals zero or doesn't exist, the USN journal
|
|
// is read from the beginning. Otherwise, the lastUSN paramerer indicates
|
|
// the most recent USN entry read during the last call of extract_log().
|
|
// If the lastUSN entry is still available in the USN journal, read the
|
|
// journal beginning at the entry following the lastUSN entry. If the
|
|
// lastUSN entry is no longer available, it indicates that the USN
|
|
// journal has wrapped: read all entries from the journal.
|
|
|
|
enum USNException {
|
|
USN_ERROR
|
|
};
|
|
|
|
enum DatabaseException {
|
|
DATABASE_ERROR
|
|
};
|
|
|
|
GrovelStatus Groveler::extract_log2(
|
|
OUT DWORD *num_entries_extracted,
|
|
OUT DWORDLONG *num_bytes_extracted,
|
|
OUT DWORDLONG *num_bytes_skipped,
|
|
OUT DWORD *num_files_enqueued,
|
|
OUT DWORD *num_files_dequeued)
|
|
{
|
|
struct FileEntry {
|
|
DWORDLONG fileID,
|
|
parentID,
|
|
timeStamp;
|
|
DWORD attributes,
|
|
reason;
|
|
} *fileEntry = NULL;
|
|
|
|
struct DirEntry {
|
|
DWORDLONG dirID;
|
|
} *dirEntry = NULL;
|
|
|
|
Table *fileTable = NULL,
|
|
*dirTable = NULL;
|
|
|
|
BYTE usnBuffer[USN_PAGE_SIZE + sizeof(DWORDLONG)];
|
|
|
|
READ_USN_JOURNAL_DATA readUSN;
|
|
|
|
USN_RECORD *usnRecord;
|
|
|
|
SGNativeTableEntry tableEntry;
|
|
|
|
SGNativeQueueEntry queueEntry;
|
|
|
|
SGNativeStackEntry stackEntry;
|
|
|
|
SGNativeListEntry listEntry;
|
|
|
|
TCHAR listValue[17];
|
|
|
|
DWORDLONG usn_log_size,
|
|
numBytesExtracted = 0,
|
|
numBytesSkipped = 0,
|
|
startUSN,
|
|
firstUSN,
|
|
nextUSN,
|
|
thisUSN;
|
|
|
|
DWORD numEntriesExtracted = 0,
|
|
numTableDeletions = 0,
|
|
numQueueDeletions = 0 ,
|
|
numQueueAdditions = 0,
|
|
numActions = 0,
|
|
offset,
|
|
bytesRead,
|
|
lastError;
|
|
|
|
LONG num;
|
|
|
|
BOOL firstEntry = TRUE,
|
|
deleteEntry,
|
|
addEntry,
|
|
success;
|
|
|
|
GrovelStatus status;
|
|
|
|
ASSERT(volumeHandle != NULL);
|
|
ASSERT(sgDatabase != NULL);
|
|
|
|
// If we don't know the previous USN, we can't extract.
|
|
|
|
if (lastUSN == UNINITIALIZED_USN) {
|
|
status = Grovel_overrun;
|
|
goto Abort;
|
|
}
|
|
ASSERT(usnID != UNINITIALIZED_USN);
|
|
|
|
fileTable = new Table;
|
|
ASSERT(fileTable != NULL);
|
|
|
|
if (inScan) {
|
|
dirTable = new Table;
|
|
ASSERT(dirTable != NULL);
|
|
}
|
|
|
|
// Set up to read the volume's USN journal.
|
|
|
|
startUSN = lastUSN == UNINITIALIZED_USN ? 0 : lastUSN;
|
|
|
|
readUSN.ReturnOnlyOnClose = 1;
|
|
readUSN.Timeout = 0;
|
|
readUSN.BytesToWaitFor = 0;
|
|
readUSN.ReasonMask = ~0U;
|
|
readUSN.UsnJournalID = usnID;
|
|
|
|
// Read the USN journal one page at a time.
|
|
|
|
try {
|
|
while (TRUE) {
|
|
readUSN.StartUsn = startUSN;
|
|
|
|
if (!DeviceIoControl(
|
|
volumeHandle,
|
|
FSCTL_READ_USN_JOURNAL,
|
|
&readUSN,
|
|
sizeof(READ_USN_JOURNAL_DATA),
|
|
usnBuffer,
|
|
USN_PAGE_SIZE + sizeof(DWORDLONG),
|
|
&bytesRead,
|
|
NULL)) {
|
|
|
|
lastError = GetLastError();
|
|
|
|
|
|
// NTRAID#65198-2000/03/10-nealch Handle USN id change (treat as overwrite w/ unknown no. of bytes skipped)
|
|
|
|
// If the journal overflowed, report by how much.
|
|
|
|
if (lastError == ERROR_KEY_DELETED || lastError == ERROR_JOURNAL_ENTRY_DELETED) {
|
|
USN_JOURNAL_DATA usnJournalData;
|
|
|
|
if (get_usn_log_info(&usnJournalData) != Grovel_ok)
|
|
return Grovel_error;
|
|
|
|
// The USN journal will not wrap in our lifetimes so we don't really need
|
|
// to handle USN Journal wrapping.
|
|
ASSERT((DWORDLONG) usnJournalData.FirstUsn > lastUSN);
|
|
|
|
numBytesSkipped = (DWORDLONG) usnJournalData.FirstUsn - lastUSN;
|
|
goto Overrun;
|
|
}
|
|
|
|
throw USN_ERROR;
|
|
}
|
|
|
|
lastError = 0;
|
|
|
|
if (bytesRead < sizeof(DWORDLONG))
|
|
throw USN_ERROR;
|
|
|
|
nextUSN = *(DWORDLONG *)usnBuffer;
|
|
if (nextUSN < startUSN)
|
|
throw USN_ERROR;
|
|
|
|
if (nextUSN == startUSN) {
|
|
if (bytesRead != sizeof(DWORDLONG))
|
|
throw USN_ERROR;
|
|
break;
|
|
}
|
|
|
|
bytesRead -= sizeof(DWORDLONG);
|
|
offset = 0;
|
|
numBytesExtracted += bytesRead;
|
|
|
|
// Process each USN journal entry.
|
|
|
|
while (bytesRead > 0) {
|
|
if (bytesRead < sizeof(USN_RECORD))
|
|
throw USN_ERROR;
|
|
|
|
usnRecord = (USN_RECORD *)&usnBuffer[offset + sizeof(DWORDLONG)];
|
|
|
|
if (usnRecord->RecordLength <
|
|
offsetof(USN_RECORD, FileName) + usnRecord->FileNameLength
|
|
|| usnRecord->RecordLength > bytesRead)
|
|
throw USN_ERROR;
|
|
|
|
thisUSN = (DWORDLONG)usnRecord->Usn;
|
|
if (thisUSN < startUSN + offset)
|
|
throw USN_ERROR;
|
|
|
|
// If this is the first entry, check if it is the expected
|
|
// USN. If it isn't, the USN journal has wrapped.
|
|
|
|
if (firstEntry)
|
|
if (startUSN == 0)
|
|
numBytesSkipped = thisUSN;
|
|
else if (thisUSN <= startUSN + usnRecord->RecordLength)
|
|
numBytesSkipped = 0;
|
|
else
|
|
numBytesSkipped = thisUSN - startUSN - usnRecord->RecordLength;
|
|
|
|
// Skip the first entry if the starting address is greater than zero.
|
|
// After skipping the first entry, examine each USN entry as follows:
|
|
//
|
|
// - If the entry is a directory, and a volume scan is underway,
|
|
// add the directory's ID to the directory table.
|
|
//
|
|
// - If the entry is a file, add it to the file table. Include
|
|
// its ID and its parent directory's ID, its most recent time
|
|
// stamp and attributes, and its accumulated reason bits.
|
|
|
|
if (firstEntry && startUSN > 0)
|
|
numBytesExtracted -= usnRecord->RecordLength;
|
|
|
|
else {
|
|
if (usnRecord-> FileReferenceNumber == 0
|
|
|| usnRecord->ParentFileReferenceNumber == 0)
|
|
throw USN_ERROR;
|
|
|
|
// The entry is a directory.
|
|
|
|
if ((usnRecord->FileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0) {
|
|
|
|
if (dirTable != NULL) {
|
|
dirEntry = (DirEntry *)dirTable->Get(
|
|
(const VOID *)&usnRecord->FileReferenceNumber,
|
|
sizeof(DWORDLONG));
|
|
|
|
if (dirEntry != NULL) {
|
|
ASSERT(dirEntry->dirID == usnRecord->FileReferenceNumber);
|
|
} else {
|
|
dirEntry = new DirEntry;
|
|
ASSERT(dirEntry != NULL);
|
|
dirEntry->dirID = usnRecord->FileReferenceNumber;
|
|
success = dirTable->Put((VOID *)dirEntry, sizeof(DWORDLONG));
|
|
ASSERT(success);
|
|
}
|
|
}
|
|
}
|
|
|
|
// The entry is a file. If USN_SOURCE_DATA_MANAGEMENT is set, assume this entry was created by
|
|
// the groveler during a merge operation.
|
|
|
|
else if ((usnRecord->SourceInfo & USN_SOURCE_DATA_MANAGEMENT) == 0) {
|
|
|
|
fileEntry = (FileEntry *)fileTable->Get(
|
|
(const VOID *)&usnRecord->FileReferenceNumber,
|
|
sizeof(DWORDLONG));
|
|
|
|
if (fileEntry != NULL) {
|
|
ASSERT(fileEntry->fileID == usnRecord->FileReferenceNumber);
|
|
} else {
|
|
fileEntry = new FileEntry;
|
|
ASSERT(fileEntry != NULL);
|
|
fileEntry->fileID = usnRecord->FileReferenceNumber;
|
|
fileEntry->reason = 0;
|
|
success = fileTable->Put((VOID *)fileEntry, sizeof(DWORDLONG));
|
|
ASSERT(success);
|
|
}
|
|
|
|
fileEntry->parentID = usnRecord->ParentFileReferenceNumber;
|
|
fileEntry->timeStamp = (DWORDLONG)usnRecord->TimeStamp.QuadPart;
|
|
fileEntry->attributes = usnRecord->FileAttributes;
|
|
|
|
if ((usnRecord->Reason & USN_REASON_FILE_DELETE) != 0)
|
|
fileEntry->reason = USN_REASON_FILE_DELETE;
|
|
else
|
|
fileEntry->reason |= usnRecord->Reason;
|
|
} else {
|
|
TPRINTF((_T("%s: USN_SOURCE_DATA_MANAGEMENT set on file 0x%016I64x\n"),
|
|
driveName, usnRecord->FileReferenceNumber));
|
|
}
|
|
|
|
if (numEntriesExtracted++ == 0)
|
|
firstUSN = thisUSN;
|
|
}
|
|
|
|
lastUSN = thisUSN;
|
|
offset += usnRecord->RecordLength;
|
|
bytesRead -= usnRecord->RecordLength;
|
|
firstEntry = FALSE;
|
|
}
|
|
|
|
startUSN = nextUSN;
|
|
}
|
|
}
|
|
|
|
// If an error occured while reading the USN journal, return an error status.
|
|
|
|
catch (USNException usnException) {
|
|
ASSERT(usnException == USN_ERROR);
|
|
|
|
if (fileTable != NULL) {
|
|
delete fileTable;
|
|
fileTable = NULL;
|
|
}
|
|
|
|
if (dirTable != NULL) {
|
|
delete dirTable;
|
|
dirTable = NULL;
|
|
}
|
|
|
|
lastUSN = UNINITIALIZED_USN;
|
|
|
|
DPRINTF((_T("%s: error reading USN journal: %lu\n"),
|
|
driveName, lastError));
|
|
return Grovel_error;
|
|
}
|
|
|
|
// We've finished reading the USN journal, so update the database. Process
|
|
// each entry in the file table, and group the updates into transactions.
|
|
|
|
try {
|
|
while ((fileEntry = (FileEntry *)fileTable->GetFirst()) != NULL) {
|
|
ASSERT(fileEntry->fileID != 0);
|
|
|
|
// If the file is currently open in the grovel process, skip this entry.
|
|
|
|
if (inUseFileID1 != NULL && fileEntry->fileID == *inUseFileID1
|
|
|| inUseFileID2 != NULL && fileEntry->fileID == *inUseFileID2) {
|
|
|
|
DPRINTF((_T("%s: extract_log/grovel collision on file 0x%016I64x\n"),
|
|
driveName, fileEntry->fileID));
|
|
|
|
} else {
|
|
|
|
// Delete the file from the queue and the table...
|
|
//
|
|
// - if the file's most recent reason bits in the USN journal
|
|
// indicate it was deleted,
|
|
//
|
|
// - if the file or the file's most recent parent directory is disallowed,
|
|
//
|
|
// - or if the file has disallowed attributes.
|
|
//
|
|
// Otherwise, update or add the file to the queue...
|
|
//
|
|
// - if the file's reason bits indicate it was changed,
|
|
//
|
|
// - or if the file isn't present in the table.
|
|
|
|
if (fileEntry->reason == USN_REASON_FILE_DELETE
|
|
|| !IsAllowedID(fileEntry->fileID)
|
|
|| !IsAllowedID(fileEntry->parentID)
|
|
|| (fileEntry->attributes & disallowedAttributes) != 0) {
|
|
deleteEntry = TRUE;
|
|
addEntry = FALSE;
|
|
} else {
|
|
deleteEntry = FALSE;
|
|
if ((fileEntry->reason & USN_ADD_REASONS) != 0)
|
|
addEntry = TRUE;
|
|
else {
|
|
tableEntry.fileID = fileEntry->fileID;
|
|
num = sgDatabase->TableGetFirstByFileID(&tableEntry);
|
|
if (num < 0)
|
|
throw DATABASE_ERROR;
|
|
ASSERT(num == 0 || num == 1);
|
|
addEntry = num == 0;
|
|
}
|
|
}
|
|
|
|
if (deleteEntry || addEntry) {
|
|
if (numActions == 0) {
|
|
if (sgDatabase->BeginTransaction() < 0)
|
|
throw DATABASE_ERROR;
|
|
numActions = 1;
|
|
}
|
|
|
|
queueEntry.reason = 0;
|
|
|
|
num = sgDatabase->TableDeleteByFileID(fileEntry->fileID);
|
|
if (num < 0)
|
|
throw DATABASE_ERROR;
|
|
if (num > 0) {
|
|
ASSERT(num == 1);
|
|
numTableDeletions++;
|
|
numActions++;
|
|
}
|
|
|
|
queueEntry.fileID = fileEntry->fileID;
|
|
queueEntry.fileName = NULL;
|
|
num = sgDatabase->QueueGetFirstByFileID(&queueEntry);
|
|
if (num < 0)
|
|
throw DATABASE_ERROR;
|
|
|
|
if (num > 0) {
|
|
ASSERT(num == 1);
|
|
num = sgDatabase->QueueDeleteByFileID(fileEntry->fileID);
|
|
if (num < 0)
|
|
throw DATABASE_ERROR;
|
|
ASSERT(num == 1);
|
|
numQueueDeletions++;
|
|
numActions++;
|
|
}
|
|
|
|
if (addEntry) {
|
|
queueEntry.fileID = fileEntry->fileID;
|
|
queueEntry.parentID = 0;
|
|
queueEntry.reason |= fileEntry->reason;
|
|
queueEntry.readyTime = fileEntry->timeStamp + minFileAge;
|
|
queueEntry.retryTime = 0;
|
|
queueEntry.fileName = NULL;
|
|
|
|
num = sgDatabase->QueuePut(&queueEntry);
|
|
if (num < 0)
|
|
throw DATABASE_ERROR;
|
|
ASSERT(num == 1);
|
|
|
|
#ifdef DEBUG_USN_REASON
|
|
if (numQueueAdditions == 0) {
|
|
DPRINTF((_T("--> __REASON__ _____FILE_ID______\n")));
|
|
}
|
|
DPRINTF((_T(" 0x%08lx 0x%016I64x\n"),
|
|
fileEntry->reason, fileEntry->fileID));
|
|
#endif
|
|
|
|
numQueueAdditions++;
|
|
numActions++;
|
|
}
|
|
|
|
if (numActions >= MAX_ACTIONS_PER_TRANSACTION) {
|
|
if (!sgDatabase->CommitTransaction())
|
|
throw DATABASE_ERROR;
|
|
TPRINTF((_T("%s: committing %lu actions to \"%s\"\n"),
|
|
driveName, numActions, databaseName));
|
|
numActions = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
delete fileEntry;
|
|
fileEntry = NULL;
|
|
}
|
|
|
|
delete fileTable;
|
|
fileTable = NULL;
|
|
|
|
// Process each entry in the directory table. If the directory hasn't already
|
|
// been scanned or isn't on the list to be scanned, add it to the list.
|
|
|
|
if (dirTable != NULL) {
|
|
ASSERT(inScan);
|
|
|
|
while ((dirEntry = (DirEntry *)dirTable->GetFirst()) != NULL) {
|
|
ASSERT(dirEntry->dirID != 0);
|
|
|
|
stackEntry.fileID = dirEntry->dirID;
|
|
num = sgDatabase->StackGetFirstByFileID(&stackEntry);
|
|
if (num < 0)
|
|
throw DATABASE_ERROR;
|
|
|
|
if (num == 0) {
|
|
if (numActions == 0) {
|
|
if (sgDatabase->BeginTransaction() < 0)
|
|
throw DATABASE_ERROR;
|
|
numActions = 1;
|
|
}
|
|
|
|
num = sgDatabase->StackPut(dirEntry->dirID, FALSE);
|
|
if (num < 0)
|
|
throw DATABASE_ERROR;
|
|
ASSERT(num == 1);
|
|
numActions++;
|
|
|
|
if (numActions >= MAX_ACTIONS_PER_TRANSACTION) {
|
|
if (!sgDatabase->CommitTransaction())
|
|
throw DATABASE_ERROR;
|
|
TPRINTF((_T("%s: committing %lu actions to \"%s\"\n"),
|
|
driveName, numActions, databaseName));
|
|
numActions = 0;
|
|
}
|
|
}
|
|
|
|
delete dirEntry;
|
|
dirEntry = NULL;
|
|
}
|
|
|
|
delete dirTable;
|
|
dirTable = NULL;
|
|
}
|
|
|
|
// Update the last USN number in the database, then commit the changes. If we're
|
|
// doing a volume scan, don't update the lastUSN until the scan is complete.
|
|
|
|
if (!inScan) {
|
|
_stprintf(listValue, _T("%016I64x"), lastUSN);
|
|
listEntry.name = LAST_USN_NAME;
|
|
listEntry.value = listValue;
|
|
num = sgDatabase->ListWrite(&listEntry);
|
|
if (num <= 0)
|
|
throw DATABASE_ERROR;
|
|
}
|
|
|
|
if (numActions > 0) {
|
|
if (!sgDatabase->CommitTransaction())
|
|
throw DATABASE_ERROR;
|
|
TPRINTF((_T("%s: committing %lu actions to \"%s\"\n"),
|
|
driveName, numActions, databaseName));
|
|
numActions = 0;
|
|
}
|
|
}
|
|
|
|
// If a database error occured, return an error status.
|
|
|
|
catch (DatabaseException databaseException) {
|
|
|
|
ASSERT(databaseException == DATABASE_ERROR);
|
|
|
|
if (numActions > 0) {
|
|
sgDatabase->AbortTransaction();
|
|
numActions = 0;
|
|
}
|
|
|
|
if (fileTable != NULL) {
|
|
delete fileTable;
|
|
fileTable = NULL;
|
|
}
|
|
|
|
if (dirTable != NULL) {
|
|
delete dirTable;
|
|
dirTable = NULL;
|
|
}
|
|
|
|
return Grovel_error;
|
|
}
|
|
|
|
Overrun:
|
|
|
|
status = numBytesSkipped == 0 ? Grovel_ok : Grovel_overrun;
|
|
|
|
Abort:
|
|
|
|
// Return the performance statistics.
|
|
|
|
if (num_entries_extracted != NULL)
|
|
*num_entries_extracted = numEntriesExtracted;
|
|
if (num_bytes_extracted != NULL)
|
|
*num_bytes_extracted = numBytesExtracted;
|
|
if (num_bytes_skipped != NULL)
|
|
*num_bytes_skipped = numBytesSkipped;
|
|
if (num_files_enqueued != NULL)
|
|
*num_files_enqueued = numQueueAdditions;
|
|
if (num_files_dequeued != NULL)
|
|
*num_files_dequeued = numQueueDeletions;
|
|
|
|
#if DBG
|
|
if (numEntriesExtracted > 0 && firstUSN < lastUSN) {
|
|
TRACE_PRINTF(TC_extract, 2,
|
|
(_T("%s: USN 0x%I64x-%I64x\n"), driveName, firstUSN, lastUSN));
|
|
} else {
|
|
TRACE_PRINTF(TC_extract, 2,
|
|
(_T("%s: USN 0x%I64x\n"), driveName, lastUSN));
|
|
}
|
|
TRACE_PRINTF(TC_extract, 2,
|
|
(_T(" NumEntriesExtracted=%lu NumBytesExtracted=%I64u NumBytesSkipped=%I64u\n"),
|
|
numEntriesExtracted, numBytesExtracted, numBytesSkipped));
|
|
TRACE_PRINTF(TC_extract, 2,
|
|
(_T(" NumTableDeletions=%lu NumQueueDeletions=%lu NumQueueAdditions=%lu\n"),
|
|
numTableDeletions, numQueueDeletions, numQueueAdditions));
|
|
#endif
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
GrovelStatus Groveler::extract_log(
|
|
OUT DWORD *num_entries_extracted,
|
|
OUT DWORDLONG *num_bytes_extracted,
|
|
OUT DWORDLONG *num_bytes_skipped,
|
|
OUT DWORD *num_files_enqueued,
|
|
OUT DWORD *num_files_dequeued)
|
|
{
|
|
GrovelStatus status;
|
|
|
|
#ifdef _CRTDBG
|
|
_CrtMemState s1, s2, sdiff;
|
|
|
|
_CrtMemCheckpoint(&s1);
|
|
#endif
|
|
|
|
status = extract_log2(
|
|
num_entries_extracted,
|
|
num_bytes_extracted,
|
|
num_bytes_skipped,
|
|
num_files_enqueued,
|
|
num_files_dequeued);
|
|
|
|
#ifdef _CRTDBG
|
|
_CrtMemCheckpoint(&s2);
|
|
if (_CrtMemDifference(&sdiff, &s1, &s2))
|
|
_CrtMemDumpStatistics(&sdiff);
|
|
#endif
|
|
|
|
return status;
|
|
}
|