1 files changed, 85 insertions, 0 deletions
diff --git a/src/common/linux/scoped_tmpfile.h b/src/common/linux/scoped_tmpfile.h
new file mode 100644
index 00000000..dffec182
--- /dev/null
+++ b/src/common/linux/scoped_tmpfile.h
@@ -0,0 +1,85 @@
+// Copyright 2022 Google LLC
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google LLC nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Utility class for creating a temporary file for that is deleted in the
+// destructor.
+
+#ifndef COMMON_LINUX_SCOPED_TMPFILE_H_
+#define COMMON_LINUX_SCOPED_TMPFILE_H_
+
+#include <string>
+
+namespace google_breakpad {
+
+// Small RAII wrapper for temporary files.
+//
+// Example:
+//   ScopedTmpFile tmp;
+//   if (tmp.Init("Some file contents")) {
+//     ...
+//   }
+class ScopedTmpFile {
+ public:
+  // Initialize the ScopedTmpFile object - this does not create the temporary
+  // file until Init is called.
+  ScopedTmpFile();
+
+  // Destroy temporary file on scope exit.
+  ~ScopedTmpFile();
+
+  // Creates the empty temporary file - returns true iff the temporary file was
+  // created successfully. Should always be checked before using the file.
+  bool InitEmpty();
+
+  // Creates the temporary file with the provided C string. The terminating null
+  // is not written. Returns true iff the temporary file was created
+  // successfully and the contents were written successfully.
+  bool InitString(const char* text);
+
+  // Creates the temporary file with the provided data. Returns true iff the
+  // temporary file was created successfully and the contents were written
+  // successfully.
+  bool InitData(const void* data, size_t data_len);
+
+  // Returns the Posix file descriptor for the test file, or -1 if Init()
+  // returned false. Note: on Windows, this always returns -1.
+  int GetFd() const {
+    return fd_;
+  }
+
+ private:
+  // Set the contents of the temporary file, and seek back to the start of the
+  // file. On failure, returns false.
+  bool SetContents(const void* data, size_t data_len);
+
+  int fd_ = -1;
+};
+
+}  // namespace google_breakpad
+
+#endif  // COMMON_LINUX_SCOPED_TMPFILE_H_