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1 // Copyright (c) 2006-2010 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "sandbox/win/tests/common/test_utils.h" | |
6 | |
7 #include <stddef.h> | |
8 #include <winioctl.h> | |
9 | |
10 typedef struct _REPARSE_DATA_BUFFER { | |
11 ULONG ReparseTag; | |
12 USHORT ReparseDataLength; | |
13 USHORT Reserved; | |
14 union { | |
15 struct { | |
16 USHORT SubstituteNameOffset; | |
17 USHORT SubstituteNameLength; | |
18 USHORT PrintNameOffset; | |
19 USHORT PrintNameLength; | |
20 ULONG Flags; | |
21 WCHAR PathBuffer[1]; | |
22 } SymbolicLinkReparseBuffer; | |
23 struct { | |
24 USHORT SubstituteNameOffset; | |
25 USHORT SubstituteNameLength; | |
26 USHORT PrintNameOffset; | |
27 USHORT PrintNameLength; | |
28 WCHAR PathBuffer[1]; | |
29 } MountPointReparseBuffer; | |
30 struct { | |
31 UCHAR DataBuffer[1]; | |
32 } GenericReparseBuffer; | |
33 }; | |
34 } REPARSE_DATA_BUFFER, *PREPARSE_DATA_BUFFER; | |
35 | |
36 // Sets a reparse point. |source| will now point to |target|. Returns true if | |
37 // the call succeeds, false otherwise. | |
38 bool SetReparsePoint(HANDLE source, const wchar_t* target) { | |
39 USHORT size_target = static_cast<USHORT>(wcslen(target)) * sizeof(target[0]); | |
40 | |
41 char buffer[2000] = {0}; | |
42 DWORD returned; | |
43 | |
44 REPARSE_DATA_BUFFER* data = reinterpret_cast<REPARSE_DATA_BUFFER*>(buffer); | |
45 | |
46 data->ReparseTag = 0xa0000003; | |
47 memcpy(data->MountPointReparseBuffer.PathBuffer, target, size_target + 2); | |
48 data->MountPointReparseBuffer.SubstituteNameLength = size_target; | |
49 data->MountPointReparseBuffer.PrintNameOffset = size_target + 2; | |
50 data->ReparseDataLength = size_target + 4 + 8; | |
51 | |
52 int data_size = data->ReparseDataLength + 8; | |
53 | |
54 if (!DeviceIoControl(source, FSCTL_SET_REPARSE_POINT, &buffer, data_size, | |
55 NULL, 0, &returned, NULL)) { | |
56 return false; | |
57 } | |
58 return true; | |
59 } | |
60 | |
61 // Delete the reparse point referenced by |source|. Returns true if the call | |
62 // succeeds, false otherwise. | |
63 bool DeleteReparsePoint(HANDLE source) { | |
64 DWORD returned; | |
65 REPARSE_DATA_BUFFER data = {0}; | |
66 data.ReparseTag = 0xa0000003; | |
67 if (!DeviceIoControl(source, FSCTL_DELETE_REPARSE_POINT, &data, 8, NULL, 0, | |
68 &returned, NULL)) { | |
69 return false; | |
70 } | |
71 | |
72 return true; | |
73 } | |
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