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This supports the “double handler” or “double handler with low probability” models from https://crashpad.chromium.org/bug/143. For crashpad_handler to be become its own client, it needs access to its own executable path to pass to CrashpadClient::StartHandler(). This was formerly available in the test-only test::Paths::Executable(). Bring that function’s implementation to the non-test Paths::Executable() in util/misc, and rename test::Paths to test::TestPaths to avoid future confusion. test::TestPaths must still be used to access TestDataRoot(), which does not make any sense to non-test code. test::TestPaths::Executable() is retained for use by tests, which most likely prefer the fatal semantics of that function. Paths::Executable() is not fatal because for the purposes of implementing the double handler, a failure to locate the executable path (which may happen on some systems in deeply-nested directory hierarchies) shouldn’t cause the initial crashpad_handler to abort, even if it does prevent a second crashpad_handler from being started. Bug: crashpad:143 Test: crashpad_util_test Paths.*, crashpad_test_test TestPaths.* Change-Id: I9f75bf61839ce51e33c9f7c0d7031cebead6a156 Reviewed-on: https://chromium-review.googlesource.com/466346 Reviewed-by: Scott Graham <scottmg@chromium.org> Commit-Queue: Mark Mentovai <mark@chromium.org>
52 lines
1.8 KiB
C++
52 lines
1.8 KiB
C++
// Copyright 2015 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef CRASHPAD_TEST_TEST_PATHS_H_
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#define CRASHPAD_TEST_TEST_PATHS_H_
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#include "base/files/file_path.h"
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#include "base/macros.h"
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namespace crashpad {
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namespace test {
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//! \brief Functions to obtain paths from within tests.
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class TestPaths {
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public:
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//! \brief Returns the pathname of the currently-running test executable.
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//!
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//! On failure, aborts execution.
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static base::FilePath Executable();
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//! \brief Returns the pathname of the test data root.
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//!
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//! If the `CRASHPAD_TEST_DATA_ROOT` environment variable is set, its value
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//! will be returned. Otherwise, this function will attempt to locate the test
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//! data root relative to the executable path. If this fails, it will fall
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//! back to returning the current working directory.
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//!
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//! At present, the test data root is normally the root of the Crashpad source
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//! tree, although this may not be the case indefinitely. This function may
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//! only be used to locate test data, not for arbitrary access to source
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//! files.
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static base::FilePath TestDataRoot();
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DISALLOW_IMPLICIT_CONSTRUCTORS(TestPaths);
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};
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} // namespace test
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} // namespace crashpad
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#endif // CRASHPAD_TEST_TEST_PATHS_H_
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