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This replaces the existing AutoTestFile implementation with a simpler implementation that uses O_TMPFILE to avoid having the temporary files linked in the filesystem. Refactor the existing tests to use the new ScopedTmpFile instead of duplicating the same ScopedTestFile wrapper into each test. Change-Id: Iee9416e52269eff271f748ec9d822aee6e28f59a Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/3971917 Reviewed-by: Lei Zhang <thestig@chromium.org>
86 lines
3.1 KiB
C++
86 lines
3.1 KiB
C++
// Copyright 2022 Google LLC
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google LLC nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Utility class for creating a temporary file for that is deleted in the
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// destructor.
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#ifndef COMMON_LINUX_SCOPED_TMPFILE_H_
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#define COMMON_LINUX_SCOPED_TMPFILE_H_
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#include <string>
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namespace google_breakpad {
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// Small RAII wrapper for temporary files.
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//
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// Example:
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// ScopedTmpFile tmp;
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// if (tmp.Init("Some file contents")) {
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// ...
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// }
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class ScopedTmpFile {
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public:
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// Initialize the ScopedTmpFile object - this does not create the temporary
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// file until Init is called.
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ScopedTmpFile();
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// Destroy temporary file on scope exit.
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~ScopedTmpFile();
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// Creates the empty temporary file - returns true iff the temporary file was
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// created successfully. Should always be checked before using the file.
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bool InitEmpty();
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// Creates the temporary file with the provided C string. The terminating null
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// is not written. Returns true iff the temporary file was created
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// successfully and the contents were written successfully.
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bool InitString(const char* text);
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// Creates the temporary file with the provided data. Returns true iff the
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// temporary file was created successfully and the contents were written
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// successfully.
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bool InitData(const void* data, size_t data_len);
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// Returns the Posix file descriptor for the test file, or -1 if Init()
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// returned false. Note: on Windows, this always returns -1.
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int GetFd() const {
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return fd_;
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}
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private:
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// Set the contents of the temporary file, and seek back to the start of the
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// file. On failure, returns false.
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bool SetContents(const void* data, size_t data_len);
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int fd_ = -1;
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};
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} // namespace google_breakpad
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#endif // COMMON_LINUX_SCOPED_TMPFILE_H_
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