1 /*
2 * COPYRIGHT: See COPYING in the top level directory
3 * PROJECT: File Management IFS Utility functions
4 * FILE: reactos/dll/win32/fmifs/compress.c
5 * PURPOSE: Volume compression
6 *
7 * PROGRAMMERS: Emanuele Aliberti
8 */
9
10 #include "precomp.h"
11
12 /*
13 * @implemented
14 */
15 BOOLEAN
16 NTAPI
EnableVolumeCompression(IN PWCHAR DriveRoot,IN USHORT Compression)17 EnableVolumeCompression(
18 IN PWCHAR DriveRoot,
19 IN USHORT Compression)
20 {
21 HANDLE hFile;
22 DWORD RetBytes;
23 BOOL Ret;
24
25 hFile = CreateFileW(DriveRoot,
26 FILE_READ_DATA | FILE_WRITE_DATA,
27 FILE_SHARE_READ | FILE_SHARE_WRITE,
28 NULL,
29 OPEN_EXISTING,
30 FILE_FLAG_BACKUP_SEMANTICS,
31 NULL);
32 if (hFile == INVALID_HANDLE_VALUE)
33 return FALSE;
34
35 Ret = DeviceIoControl(hFile,
36 FSCTL_SET_COMPRESSION,
37 &Compression,
38 sizeof(USHORT),
39 NULL,
40 0,
41 &RetBytes,
42 NULL);
43
44 CloseHandle(hFile);
45
46 return (Ret != 0);
47 }
48
49 /* EOF */
50