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// Copyright 2020 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef LIBBRILLO_BRILLO_NAMESPACES_PLATFORM_H_
#define LIBBRILLO_BRILLO_NAMESPACES_PLATFORM_H_
#include <sys/types.h>
#include <memory>
#include <string>
#include <base/files/file_path.h>
#include <base/macros.h>
#include <brillo/brillo_export.h>
namespace brillo {
// Platform specific routines abstraction layer.
// Also helps us to be able to mock them in tests.
class BRILLO_EXPORT Platform {
public:
Platform();
virtual ~Platform();
// Calls the platform fork() function and returns the pid returned
// by fork().
virtual pid_t Fork();
// Calls the platform unmount.
//
// Parameters
// path - The path to unmount
// lazy - Whether to call a lazy unmount
// was_busy (OUT) - Set to true on return if the mount point was busy
virtual bool Unmount(const base::FilePath& path, bool lazy, bool* was_busy);
// Calls the platform mount.
//
// Parameters
// source - The path to mount from
// target - The path to mount to
// fs_type - File system type of the mount
// mount_flags - Flags spesifying the type of the mount operation
// data - Mount options
virtual int Mount(const std::string& source,
const std::string& target,
const std::string& fs_type,
uint64_t mount_flags,
const void* = nullptr);
// Checks the file system type of the |path| and returns true if the
// filesystem type is nsfs.
//
// Parameters
// path - The path to check the file system type
virtual bool FileSystemIsNsfs(const base::FilePath& path);
// Calls the platform waitpid() function and returns the value returned by
// waitpid().
//
// Parameters
// pid - The child pid to be waited on
// status (OUT)- Termination status of a child process.
virtual pid_t Waitpid(pid_t pid, int* status);
DISALLOW_COPY_AND_ASSIGN(Platform);
};
} // namespace brillo
#endif // LIBBRILLO_BRILLO_NAMESPACES_PLATFORM_H_
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