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// Copyright (c) 2013 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_UDEV_UDEV_DEVICE_H_
#define LIBBRILLO_BRILLO_UDEV_UDEV_DEVICE_H_
#include <stdint.h>
#include <sys/types.h>
#include <memory>
#include <base/macros.h>
#include <brillo/brillo_export.h>
#include <brillo/udev/udev_list_entry.h>
struct udev_device;
namespace brillo {
// A udev device, which wraps a udev_device C struct from libudev and related
// library functions into a C++ object.
class BRILLO_EXPORT UdevDevice {
public:
// Constructs a UdevDevice object by taking a raw pointer to a udev_device
// struct as |device|. The ownership of |device| is not transferred, but its
// reference count is increased by one during the lifetime of this object.
explicit UdevDevice(udev_device* device);
// Destructs this UdevDevice object and decreases the reference count of the
// underlying udev_device struct by one.
virtual ~UdevDevice();
// Wraps udev_device_get_parent().
virtual std::unique_ptr<UdevDevice> GetParent() const;
// Wraps udev_device_get_parent_with_subsystem_devtype().
virtual std::unique_ptr<UdevDevice> GetParentWithSubsystemDeviceType(
const char* subsystem, const char* device_type) const;
// Wraps udev_device_get_is_initialized().
virtual bool IsInitialized() const;
// Wraps udev_device_get_usec_since_initialized().
virtual uint64_t GetMicrosecondsSinceInitialized() const;
// Wraps udev_device_get_seqnum().
virtual uint64_t GetSequenceNumber() const;
// Wraps udev_device_get_devpath().
virtual const char* GetDevicePath() const;
// Wraps udev_device_get_devnode().
virtual const char* GetDeviceNode() const;
// Wraps udev_device_get_devnum().
virtual dev_t GetDeviceNumber() const;
// Wraps udev_device_get_devtype().
virtual const char* GetDeviceType() const;
// Wraps udev_device_get_driver().
virtual const char* GetDriver() const;
// Wraps udev_device_get_subsystem().
virtual const char* GetSubsystem() const;
// Wraps udev_device_get_syspath().
virtual const char* GetSysPath() const;
// Wraps udev_device_get_sysname().
virtual const char* GetSysName() const;
// Wraps udev_device_get_sysnum().
virtual const char* GetSysNumber() const;
// Wraps udev_device_get_action().
virtual const char* GetAction() const;
// Wraps udev_device_get_devlinks_list_entry().
virtual std::unique_ptr<UdevListEntry> GetDeviceLinksListEntry() const;
// Wraps udev_device_get_properties_list_entry().
virtual std::unique_ptr<UdevListEntry> GetPropertiesListEntry() const;
// Wraps udev_device_get_property_value().
virtual const char* GetPropertyValue(const char* key) const;
// Wraps udev_device_get_tags_list_entry().
virtual std::unique_ptr<UdevListEntry> GetTagsListEntry() const;
// Wraps udev_device_get_sysattr_list_entry().
virtual std::unique_ptr<UdevListEntry> GetSysAttributeListEntry() const;
// Wraps udev_device_get_sysattr_value().
virtual const char* GetSysAttributeValue(const char* attribute) const;
// Creates a copy of this UdevDevice pointing to the same underlying
// struct udev_device* (increasing its libudev reference count by 1).
virtual std::unique_ptr<UdevDevice> Clone();
private:
// Allows MockUdevDevice to invoke the private default constructor below.
friend class MockUdevDevice;
// Constructs a UdevDevice object without referencing a udev_device struct,
// which is only allowed to be called by MockUdevDevice.
UdevDevice();
udev_device* device_;
DISALLOW_COPY_AND_ASSIGN(UdevDevice);
};
} // namespace brillo
#endif // LIBBRILLO_BRILLO_UDEV_UDEV_DEVICE_H_
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