static void drive_process_irp_read(DRIVE_DEVICE* disk, IRP* irp)
{
DRIVE_FILE* file;
UINT32 Length;
UINT64 Offset;
BYTE* buffer = NULL;
stream_read_UINT32(irp->input, Length);
stream_read_UINT64(irp->input, Offset);
file = drive_get_file_by_id(disk, irp->FileId);
if (file == NULL)
{
irp->IoStatus = STATUS_UNSUCCESSFUL;
Length = 0;
DEBUG_WARN("FileId %d not valid.", irp->FileId);
}
else if (!drive_file_seek(file, Offset))
{
irp->IoStatus = STATUS_UNSUCCESSFUL;
Length = 0;
DEBUG_WARN("seek %s(%d) failed.", file->fullpath, file->id);
}
else
{
buffer = (BYTE*) malloc(Length);
if (!drive_file_read(file, buffer, &Length))
{
irp->IoStatus = STATUS_UNSUCCESSFUL;
free(buffer);
buffer = NULL;
Length = 0;
DEBUG_WARN("read %s(%d) failed.", file->fullpath, file->id);
}
else
{
DEBUG_SVC("read %llu-%llu from %s(%d).", Offset, Offset + Length, file->fullpath, file->id);
}
}
stream_write_UINT32(irp->output, Length);
if (Length > 0)
{
stream_check_size(irp->output, (int) Length);
stream_write(irp->output, buffer, Length);
}
free(buffer);
irp->Complete(irp);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT drive_process_irp_read(DRIVE_DEVICE* drive, IRP* irp)
{
DRIVE_FILE* file;
UINT32 Length;
UINT64 Offset;
BYTE* buffer = NULL;
Stream_Read_UINT32(irp->input, Length);
Stream_Read_UINT64(irp->input, Offset);
file = drive_get_file_by_id(drive, irp->FileId);
if (!file)
{
irp->IoStatus = STATUS_UNSUCCESSFUL;
Length = 0;
}
else if (!drive_file_seek(file, Offset))
{
irp->IoStatus = STATUS_UNSUCCESSFUL;
Length = 0;
}
else
{
buffer = (BYTE*) malloc(Length);
if (!buffer)
{
WLog_ERR(TAG, "malloc failed!");
return CHANNEL_RC_OK;
}
if (!drive_file_read(file, buffer, &Length))
{
irp->IoStatus = STATUS_UNSUCCESSFUL;
free(buffer);
buffer = NULL;
Length = 0;
}
}
Stream_Write_UINT32(irp->output, Length);
if (Length > 0)
{
if (!Stream_EnsureRemainingCapacity(irp->output, (int) Length))
{
WLog_ERR(TAG, "Stream_EnsureRemainingCapacity failed!");
return ERROR_INTERNAL_ERROR;
}
Stream_Write(irp->output, buffer, Length);
}
free(buffer);
return irp->Complete(irp);
}
static void drive_process_irp_read(DRIVE_DEVICE* drive, IRP* irp)
{
DRIVE_FILE* file;
UINT32 Length;
UINT64 Offset;
BYTE* buffer = NULL;
Stream_Read_UINT32(irp->input, Length);
Stream_Read_UINT64(irp->input, Offset);
file = drive_get_file_by_id(drive, irp->FileId);
if (!file)
{
irp->IoStatus = STATUS_UNSUCCESSFUL;
Length = 0;
}
else if (!drive_file_seek(file, Offset))
{
irp->IoStatus = STATUS_UNSUCCESSFUL;
Length = 0;
}
else
{
buffer = (BYTE*) malloc(Length);
if (!drive_file_read(file, buffer, &Length))
{
irp->IoStatus = STATUS_UNSUCCESSFUL;
free(buffer);
buffer = NULL;
Length = 0;
}
else
{
}
}
Stream_Write_UINT32(irp->output, Length);
if (Length > 0)
{
Stream_EnsureRemainingCapacity(irp->output, (int) Length);
Stream_Write(irp->output, buffer, Length);
}
free(buffer);
irp->Complete(irp);
}
