reactos/dll/win32/fmifs/compress.c
2013-06-16 22:01:41 +00:00

52 lines
846 B
C

/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: File Management IFS Utility functions
* FILE: reactos/dll/win32/fmifs/compress.c
* PURPOSE: Volume compression
*
* PROGRAMMERS: Emanuele Aliberti
*/
#include "precomp.h"
/*
* @implemented
*/
BOOLEAN NTAPI
EnableVolumeCompression(
IN PWCHAR DriveRoot,
IN USHORT Compression)
{
HANDLE hFile;
DWORD RetBytes;
BOOL Ret;
hFile = CreateFileW(
DriveRoot,
FILE_READ_DATA | FILE_WRITE_DATA,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
OPEN_EXISTING,
FILE_FLAG_BACKUP_SEMANTICS,
NULL);
if (hFile == INVALID_HANDLE_VALUE)
return FALSE;
Ret = DeviceIoControl(
hFile,
FSCTL_SET_COMPRESSION,
&Compression,
sizeof(USHORT),
NULL,
0,
&RetBytes,
NULL);
CloseHandle(hFile);
return (Ret != 0);
}
/* EOF */