crashpad/test/filesystem.h
Joshua Peraza 6f6f8a144d Add FileModificationTime
FileModificationTime gets the last write time for files, directories,
or symbolic links. Symbolic links may point to files, directories, or
be dangling.

Bug: crashpad:206
Change-Id: Ic83b5a7d318502ad5db5c01731d06c8624925e15
Reviewed-on: https://chromium-review.googlesource.com/744298
Commit-Queue: Joshua Peraza <jperaza@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
2017-11-09 06:27:46 +00:00

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// Copyright 2017 The Crashpad Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef CRASHPAD_TEST_FILESYSTEM_H_
#define CRASHPAD_TEST_FILESYSTEM_H_
#include "base/files/file_path.h"
#include <time.h>
#include "build/build_config.h"
namespace crashpad {
namespace test {
//! \brief Creates an empty file at path \a filepath.
bool CreateFile(const base::FilePath& filepath);
//! \brief Returns `true` if a filesystem node exists at path \a path.
bool PathExists(const base::FilePath& path);
//! \brief Sets the modification time for a file, directory, or symbolic link.
//!
//! \param[in] path The path to the file to set the modification time for.
//! \param[in] mtime The new modification time for the file.
//! \return `true` on success. Otherwise `false` with a message logged.
bool SetFileModificationTime(const base::FilePath& path, const timespec& mtime);
#if !defined(OS_FUCHSIA) || DOXYGEN
// There are no symbolic links on Fuchsia. Dont bother declaring or defining
// symbolic link-related functions at all, because its an error to even pretend
// that symbolic links might be available on Fuchsia.
//! \brief Determines whether it should be possible to create symbolic links.
//!
//! It is always possible to create symbolic links on POSIX.
//!
//! On Windows, it is only possible to create symbolic links when running as an
//! administrator, or as a non-administrator when running Windows 10 build 15063
//! (1703, Creators Update) or later, provided that developer mode is enabled
//! and `SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE` is used. This function
//! tests the creation of a symbolic link and returns true on success, and false
//! on failure. If the symbolic link could not be created for a reason other
//! than the expected lack of privilege, a message is logged.
//!
//! Additional background: <a
//! href="https://blogs.windows.com/buildingapps/2016/12/02/symlinks-windows-10/">Symlinks
//! in Windows 10!</a>
bool CanCreateSymbolicLinks();
//! \brief Creates a new symbolic link.
//!
//! \param[in] target_path The target for the link.
//! \param[in] symlink_path The name for the new link.
//! \return `true` on success. Otherwise `false` with a message logged.
bool CreateSymbolicLink(const base::FilePath& target_path,
const base::FilePath& symlink_path);
#endif // !OS_FUCHSIA || DOXYGEN
} // namespace test
} // namespace crashpad
#endif // CRASHPAD_TEST_FILESYSTEM_H_