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Issue 7542026: Handle STATUS_BUFFER_OVERFLOW return value from NtQueryObject(). (Closed) Base URL: svn://chrome-svn/chrome/trunk/src/
Patch Set: '' Created 9 years, 4 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "sandbox/src/handle_closer.h" 5 #include "sandbox/src/handle_closer.h"
6 6
7 #include "base/logging.h" 7 #include "base/logging.h"
8 #include "base/memory/scoped_ptr.h" 8 #include "base/memory/scoped_ptr.h"
9 #include "base/win/windows_version.h" 9 #include "base/win/windows_version.h"
10 #include "sandbox/src/interceptors.h" 10 #include "sandbox/src/interceptors.h"
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180 ResolveNTFunctionPtr("NtQueryObject", &QueryObject); 180 ResolveNTFunctionPtr("NtQueryObject", &QueryObject);
181 181
182 ULONG size = MAX_PATH; 182 ULONG size = MAX_PATH;
183 scoped_ptr<UNICODE_STRING> name; 183 scoped_ptr<UNICODE_STRING> name;
184 NTSTATUS result; 184 NTSTATUS result;
185 185
186 do { 186 do {
187 name.reset(reinterpret_cast<UNICODE_STRING*>(new BYTE[size])); 187 name.reset(reinterpret_cast<UNICODE_STRING*>(new BYTE[size]));
188 result = QueryObject(handle, ObjectNameInformation, name.get(), 188 result = QueryObject(handle, ObjectNameInformation, name.get(),
189 size, &size); 189 size, &size);
190 } while (result == STATUS_INFO_LENGTH_MISMATCH); 190 } while (result == STATUS_INFO_LENGTH_MISMATCH ||
191 result == STATUS_BUFFER_OVERFLOW);
191 192
192 if (NT_SUCCESS(result) && name->Buffer && name->Length) 193 if (NT_SUCCESS(result) && name->Buffer && name->Length)
193 handle_name->assign(name->Buffer, name->Length / sizeof(wchar_t)); 194 handle_name->assign(name->Buffer, name->Length / sizeof(wchar_t));
194 else 195 else
195 handle_name->clear(); 196 handle_name->clear();
196 197
197 return NT_SUCCESS(result); 198 return NT_SUCCESS(result);
198 } 199 }
199 200
200 } // namespace sandbox 201 } // namespace sandbox
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