private bool RecoveryFile(FNodeX source, string savePath)
{
var node = source.Source;
FILE_RECOVERY_INFO file = new FILE_RECOVERY_INFO();
file.Attr = node.FileAttribute;
file.FileId = node.FileId;
file.OffSet = node.OffsetBytes;
file.OffsetSec = node.OffsetSec;
file.ParentFileId = node.ParentFileId;
file.Size = node.Size;
CHECK_SUM_INFO check = new CHECK_SUM_INFO();
int res = 0;
IntPtr fileHandle = IntPtr.Zero;
try
{
fileHandle = FileServiceCoreDll.CreateNewFile(savePath);
res = FileServiceCoreDll.RecoveryFile(source.Mount, fileHandle, LpfnRecoveryFileProgressEx, ref file, ref check);
if (0 != res)
{
LoggerManagerSingle.Instance.Error(string.Format("提取文件时底层库FileServiceCoreDll.RecoveryFile失败！错误码:{0}", res));
}
}
catch (Exception ex)
{
LoggerManagerSingle.Instance.Error("提取文件时底层库FileServiceCoreDll.RecoveryFile出现异常！", ex);
}
finally
{
if (IntPtr.Zero != fileHandle)
{
FileServiceCoreDll.CloseDevice(fileHandle);
}
}
return(res == 0);
}
private byte[] ReadFileBytes(FNodeX source, int offset = 0, int len = 0)
{
var node = source.Source;
FILE_RECOVERY_INFO file = new FILE_RECOVERY_INFO();
file.Attr = node.FileAttribute;
file.FileId = node.FileId;
file.OffSet = node.OffsetBytes;
file.OffsetSec = node.OffsetSec;
file.ParentFileId = node.ParentFileId;
file.Size = node.Size;
byte[] buff = new byte[len];
try
{
FileServiceCoreDll.ReadFileByBottom(source.Mount, ref file, (ulong)offset, len, buff);
}
catch (Exception ex)
{
LoggerManagerSingle.Instance.Error("提取文件时底层库FileServiceCoreDll.ReadFileByBottom出现异常！", ex);
}
return(buff);
}
public static extern Int32 ReadFileByBottom(IntPtr mountHandle, ref FILE_RECOVERY_INFO recoveryFileInfo, UInt64 offset_bytes, Int32 length, byte[] buffer);
public static extern Int32 RecoveryFile(IntPtr mountHandle, IntPtr newFileHandle, LpfnRecoveryFileProgressEx callback, ref FILE_RECOVERY_INFO recoveryFileInfo, ref CHECK_SUM_INFO cherckSumInfo);
public static extern Int32 RecoveryFile(IntPtr mountHandle, IntPtr newFileHandle, LpfnRecoveryFileProgress callback, ref FILE_RECOVERY_INFO recoveryFileInfo);
/// <summary>
/// 通过底层读取文件内容
/// </summary>
/// <param name="mountHandle">分区句柄</param>
/// <param name="recoveryFileInfo">文件信息结构指针</param>
/// <param name="offset_bytes">偏移字节</param>
/// <param name="length">读取长度</param>
/// <param name="buffer">输出数据缓冲区指针</param>
/// <returns>0 - 成功，其他数字-错误</returns>
public Int32 ReadFileByBottomEx(IntPtr mountHandle, ref FILE_RECOVERY_INFO recoveryFileInfo, UInt64 offset_bytes, Int32 length, byte[] buffer)
{
return(ReadFileByBottom(mountHandle, ref recoveryFileInfo, offset_bytes, length, buffer));
}
/// <summary>
/// 恢复文件
/// </summary>
/// <param name="mountHandle">装载的分区句柄</param>
/// <param name="newFileHandle">新建文件句柄</param>
/// <param name="callback">文件恢复进度回调函数</param>
/// <param name="recoveryFileInfo">被恢复文件结构</param>
/// <returns></returns>
public Int32 RecoveryFileEx(IntPtr mountHandle, IntPtr newFileHandle, LpfnRecoveryFileProgress callback, ref FILE_RECOVERY_INFO recoveryFileInfo)
{
return(RecoveryFile(mountHandle, newFileHandle, callback, ref recoveryFileInfo));
}
