/* Write to disk the current serial value for DB (db->name).
*
* Function was rewritten to return a value to indicate if
* there were any errors in writing the serial value and also
* to avoid buffering issues. This is part of our support for
* atomic transactions.
*
* Note: Later we should write the current serial value as the
* first line in the DB in a fixed field. The original choice to
* have a seperate current serial file was (IMHO) a poor choice.
*
* Input:
* -pointer to the DB struct so we know the name of the DB
* and the current serial value to write to disk (db)
*
* Return:
* -1 if the current serial value was written to disk without error.
* -0 otherwise.
*/
int write_irr_serial (irr_database_t *db) {
int ret_code = 0;
char dbname[BUFSIZE], file[BUFSIZE], serial[20];
int fd;
/* make the current serial file name */
strcpy (dbname, db->name);
convert_toupper (dbname);
sprintf (file, "%s/%s.CURRENTSERIAL", IRR.database_dir, dbname);
/* now write the current serial to file */
if ((fd = open (file, O_WRONLY|O_TRUNC|O_CREAT, 0644)) >= 0) {
sprintf (serial, "%u", db->serial_number);
if (write (fd, serial, strlen (serial)) > 0) {
SetStatusString (IRR.statusfile, dbname, "currentserial", serial);
ret_code = 1;
} else
trace (ERROR, default_trace, "write_irr_serial (): file write error: (%s)\n",
strerror (errno));
close (fd);
}
else
trace (ERROR, default_trace, "write_irr_serial (): file open error: (%s)\n",
strerror (errno));
return ret_code;
}
void Defragment::Stop (void)
{
Lock ();
SetStatusString (L"Stopping ...");
PleaseStop = true;
Unlock ();
return;
}
void Defragment::TogglePause (void)
{
Lock ();
SetStatusString (L"Pausing ...");
PleasePause = true;
Unlock ();
return;
}
Defragment::Defragment (wstring Name, DefragType DefragMethod)
{
Method = DefragMethod;
DoLimitLength = true;
Error = false;
Done = false;
PleaseStop = false;
PleasePause = false;
DriveName = Name;
StatusPercent = 0.0f;
LastBMPUpdate = GetTickCount ();
SetStatusString (L"Opening volume " + Name);
if (!Volume.Open (Name))
{
SetStatusString (L"Error opening volume " + Name);
Error = true;
Done = true;
StatusPercent = 100.0f;
}
return;
}
Defragment::~Defragment ()
{
if (!IsDoneYet ())
{
Stop ();
while (!IsDoneYet() && !HasError())
{
SetStatusString (L"Waiting for thread to stop ...");
Sleep (150);
}
}
Volume.Close ();
return;
}
void write_irr_serial_export (uint32_t serial, irr_database_t *database) {
char db[BUFSIZE], file[BUFSIZE], serial_out[20];
FILE *fp;
if (database->export_filename != NULL)
strcpy (db, database->export_filename);
else
strcpy (db, database->name);
convert_toupper(db);
sprintf (file, "%s/%s.CURRENTSERIAL", IRR.ftp_dir, db);
if ((fp = fopen (file, "w")) != NULL) {
sprintf (serial_out, "%u", serial);
fwrite (serial_out, 1, strlen (serial_out), fp);
fclose (fp);
}
SetStatusString (IRR.statusfile, db, "lastexport", serial_out);
}
void Defragment::Start (void)
{
uint32 i;
uint64 FirstFreeLCN;
uint64 TotalClusters;
uint64 ClustersProgress;
wchar_t PrintName[80];
int Width = 70;
if (Error)
goto DoneDefrag;
// First thing: build a file list.
SetStatusString (L"Getting volume bitmap");
if (!Volume.GetBitmap())
{
SetStatusString (L"Could not get volume " + DriveName + L" bitmap");
Error = true;
goto DoneDefrag;
}
LastBMPUpdate = GetTickCount ();
if (PleaseStop)
goto DoneDefrag;
SetStatusString (L"Obtaining volume geometry");
if (!Volume.ObtainInfo ())
{
SetStatusString (L"Could not obtain volume " + DriveName + L" geometry");
Error = true;
goto DoneDefrag;
}
if (PleaseStop)
goto DoneDefrag;
SetStatusString (L"Building file database for volume " + DriveName);
if (!Volume.BuildFileList (PleaseStop, StatusPercent))
{
SetStatusString (L"Could not build file database for volume " + DriveName);
Error = true;
goto DoneDefrag;
}
if (PleaseStop)
goto DoneDefrag;
SetStatusString (L"Analyzing database for " + DriveName);
TotalClusters = 0;
for (i = 0; i < Volume.GetDBFileCount(); i++)
{
TotalClusters += Volume.GetDBFile(i).Clusters;
}
// Defragment!
ClustersProgress = 0;
// Find first free LCN for speedier searches ...
Volume.FindFreeRange (0, 1, FirstFreeLCN);
if (PleaseStop)
goto DoneDefrag;
// Analyze?
if (Method == DefragAnalyze)
{
uint32 j;
Report.RootPath = Volume.GetRootPath ();
Report.FraggedFiles.clear ();
Report.UnfraggedFiles.clear ();
Report.UnmovableFiles.clear ();
Report.FilesCount = Volume.GetDBFileCount () - Volume.GetDBDirCount ();
Report.DirsCount = Volume.GetDBDirCount ();
Report.DiskSizeBytes = Volume.GetVolumeInfo().TotalBytes;
Report.FilesSizeClusters = 0;
Report.FilesSlackBytes = 0;
Report.FilesSizeBytes = 0;
Report.FilesFragments = 0;
for (j = 0; j < Volume.GetDBFileCount(); j++)
{
FileInfo Info;
Info = Volume.GetDBFile (j);
Report.FilesFragments += max ((size_t)1, Info.Fragments.size()); // add 1 fragment even for 0 bytes/0 cluster files
if (Info.Attributes.Process == 0)
continue;
SetStatusString (Volume.GetDBDir (Info.DirIndice) + Info.Name);
Report.FilesSizeClusters += Info.Clusters;
Report.FilesSizeBytes += Info.Size;
if (Info.Attributes.Unmovable == 1)
Report.UnmovableFiles.push_back (j);
if (Info.Fragments.size() > 1)
Report.FraggedFiles.push_back (j);
else
Report.UnfraggedFiles.push_back (j);
StatusPercent = ((double)j / (double)Report.FilesCount) * 100.0f;
}
Report.FilesSizeOnDisk = Report.FilesSizeClusters * (uint64)Volume.GetVolumeInfo().ClusterSize;
Report.FilesSlackBytes = Report.FilesSizeOnDisk - Report.FilesSizeBytes;
Report.AverageFragments = (double)Report.FilesFragments / (double)Report.FilesCount;
Report.PercentFragged = 100.0f * ((double)(signed)Report.FraggedFiles.size() / (double)(signed)Report.FilesCount);
uint64 Percent;
Percent = (10000 * Report.FilesSlackBytes) / Report.FilesSizeOnDisk;
Report.PercentSlack = (double)(signed)Percent / 100.0f;
}
else
// Go through all the files and ... defragment them!
for (i = 0; i < Volume.GetDBFileCount(); i++)
{
FileInfo Info;
bool Result;
uint64 TargetLCN;
uint64 PreviousClusters;
// What? They want us to pause? Oh ok.
if (PleasePause)
{
SetStatusString (L"Paused");
PleasePause = false;
while (PleasePause == false)
{
Sleep (50);
}
PleasePause = false;
}
if (PleaseStop)
{
SetStatusString (L"Stopping");
break;
}
//
Info = Volume.GetDBFile (i);
PreviousClusters = ClustersProgress;
ClustersProgress += Info.Clusters;
if (Info.Attributes.Process == 0)
continue;
if (!DoLimitLength)
SetStatusString (Volume.GetDBDir (Info.DirIndice) + Info.Name);
else
{
FitName (PrintName, Volume.GetDBDir (Info.DirIndice).c_str(), Info.Name.c_str(), Width);
SetStatusString (PrintName);
}
// Calculate percentage complete
StatusPercent = 100.0f * double((double)PreviousClusters / (double)TotalClusters);
// Can't defrag directories yet
if (Info.Attributes.Directory == 1)
continue;
// Can't defrag 0 byte files :)
if (Info.Fragments.empty())
continue;
// If doing fast defrag, skip non-fragmented files
// Note: This assumes that the extents stored in Info.Fragments
// are consolidated. I.e. we assume it is NOT the case that
// two extents account for a sequential range of (non-
// fragmented) clusters.
if (Info.Fragments.size() == 1 && Method == DefragFast)
continue;
// Otherwise, defrag0rize it!
int Retry = 3; // retry a few times
while (Retry > 0)
{
// Find a place that can fit the file
Result = Volume.FindFreeRange (FirstFreeLCN, Info.Clusters, TargetLCN);
// If yes, try moving it
if (Result)
{
// If we're doing an extensive defrag and the file is already defragmented
// and if its new location would be after its current location, don't
// move it.
if (Method == DefragExtensive && Info.Fragments.size() == 1 &&
TargetLCN > Info.Fragments[0].StartLCN)
{
Retry = 1;
}
else
{
if (Volume.MoveFileDumb (i, TargetLCN))
{
Retry = 1; // yay, all done with this file.
Volume.FindFreeRange (0, 1, FirstFreeLCN);
}
}
}
// New: Only update bitmap if it's older than 15 seconds
if ((GetTickCount() - LastBMPUpdate) < 15000)
Retry = 1;
else if (!Result || Retry != 1)
{ // hmm. Wait for a moment, then update the drive bitmap
//SetStatusString (L"(Reobtaining volume " + DriveName + L" bitmap)");
if (!DoLimitLength)
{
SetStatusString (GetStatusString() + wstring (L" ."));
}
if (Volume.GetBitmap ())
{
LastBMPUpdate = GetTickCount ();
if (!DoLimitLength)
SetStatusString (Volume.GetDBDir (Info.DirIndice) + Info.Name);
else
SetStatusString (PrintName);
Volume.FindFreeRange (0, 1, FirstFreeLCN);
}
else
{
SetStatusString (L"Could not re-obtain volume " + DriveName + L" bitmap");
Error = true;
}
}
Retry--;
}
if (Error == true)
break;
}
DoneDefrag:
wstring OldStatus;
OldStatus = GetStatusString ();
StatusPercent = 99.999999f;
SetStatusString (L"Closing volume " + DriveName);
Volume.Close ();
StatusPercent = 100.0f;
// If there was an error then the wstring has already been set
if (Error)
SetStatusString (OldStatus);
else if (PleaseStop)
SetStatusString (L"Volume " + DriveName + L" defragmentation was stopped");
else
SetStatusString (L"Finished defragmenting " + DriveName);
Done = true;
return;
}
