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// Copyright (c) 2006-2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "sandbox/tests/common/test_utils.h"
#include <winioctl.h>
typedef struct _REPARSE_DATA_BUFFER {
ULONG ReparseTag;
USHORT ReparseDataLength;
USHORT Reserved;
union {
struct {
USHORT SubstituteNameOffset;
USHORT SubstituteNameLength;
USHORT PrintNameOffset;
USHORT PrintNameLength;
ULONG Flags;
WCHAR PathBuffer[1];
} SymbolicLinkReparseBuffer;
struct {
USHORT SubstituteNameOffset;
USHORT SubstituteNameLength;
USHORT PrintNameOffset;
USHORT PrintNameLength;
WCHAR PathBuffer[1];
} MountPointReparseBuffer;
struct {
UCHAR DataBuffer[1];
} GenericReparseBuffer;
};
} REPARSE_DATA_BUFFER, *PREPARSE_DATA_BUFFER;
// Sets a reparse point. |source| will now point to |target|. Returns true if
// the call succeeds, false otherwise.
bool SetReparsePoint(HANDLE source, const wchar_t* target) {
USHORT size_target = static_cast<USHORT>(wcslen(target)) * sizeof(target[0]);
char buffer[2000] = {0};
DWORD returned;
REPARSE_DATA_BUFFER* data = reinterpret_cast<REPARSE_DATA_BUFFER*>(buffer);
data->ReparseTag = 0xa0000003;
memcpy(data->MountPointReparseBuffer.PathBuffer, target, size_target + 2);
data->MountPointReparseBuffer.SubstituteNameLength = size_target;
data->MountPointReparseBuffer.PrintNameOffset = size_target + 2;
data->ReparseDataLength = size_target + 4 + 8;
int data_size = data->ReparseDataLength + 8;
if (!DeviceIoControl(source, FSCTL_SET_REPARSE_POINT, &buffer, data_size,
NULL, 0, &returned, NULL)) {
return false;
}
return true;
}
// Delete the reparse point referenced by |source|. Returns true if the call
// succeeds, false otherwise.
bool DeleteReparsePoint(HANDLE source) {
DWORD returned;
REPARSE_DATA_BUFFER data = {0};
data.ReparseTag = 0xa0000003;
if (!DeviceIoControl(source, FSCTL_DELETE_REPARSE_POINT, &data, 8, NULL, 0,
&returned, NULL)) {
return false;
}
return true;
}
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