internal static unsafe void SetFileLength(SafeFileHandle handle, long length)
{
var eofInfo = new Interop.Kernel32.FILE_END_OF_FILE_INFO
{
EndOfFile = length
};
if (!Interop.Kernel32.SetFileInformationByHandle(
handle,
Interop.Kernel32.FileEndOfFileInfo,
&eofInfo,
(uint)sizeof(Interop.Kernel32.FILE_END_OF_FILE_INFO)))
{
int errorCode = Marshal.GetLastPInvokeError();
throw errorCode == Interop.Errors.ERROR_INVALID_PARAMETER
? new ArgumentOutOfRangeException(nameof(length), SR.ArgumentOutOfRange_FileLengthTooBig)
: Win32Marshal.GetExceptionForWin32Error(errorCode, handle.Path);
}
}
internal static unsafe bool TrySetFileLength(SafeFileHandle handle, long length, out int errorCode)
{
var eofInfo = new Interop.Kernel32.FILE_END_OF_FILE_INFO
{
EndOfFile = length
};
if (!Interop.Kernel32.SetFileInformationByHandle(
handle,
Interop.Kernel32.FileEndOfFileInfo,
&eofInfo,
(uint)sizeof(Interop.Kernel32.FILE_END_OF_FILE_INFO)))
{
errorCode = Marshal.GetLastPInvokeError();
return(false);
}
errorCode = Interop.Errors.ERROR_SUCCESS;
return(true);
}