softwarecontainer::Device Class Reference

Public Member Functions
	Device (std::string name="", int mode=-1)
	Device (const Device &dev)
bool	parse (const json_t *element)
	Configures this device by parsing the supplied JSON configuration string. More...
bool	activate (std::shared_ptr< ContainerAbstractInterface > container)
	Activates this device by running mknod and chmod commands which are run in the container. More...
void	calculateDeviceMode (const int appliedMode)
const std::string	getName ()
int	getMode ()
bool	getIsconfigured ()
void	setMode (int _mode)

Detailed Description

Definition at line 29 of file devicenode.h.

Member Function Documentation

bool softwarecontainer::Device::parse

(

const json_t *

element

)

Configures this device by parsing the supplied JSON configuration string.

Parameters

element

A JSON configuration item.

Returns

false if an error was encountered while parsing, true otherwise.

Definition at line 39 of file devicenode.cpp.

References softwarecontainer::JSONParser::read().

Referenced by softwarecontainer::DeviceNodeGateway::readConfigElement().

{

    m_name = "";
    if (!JSONParser::read(element, "name", m_name)) {
        log_error() << "Key \"name\" missing or not a string in json configuration";
        return false;
    }

    m_mode = -1;

    // Mode is optional, i.e. do not do anything if it is not specified.
    if (nullptr != json_object_get(element, "mode")) {
        const bool modeParses = JSONParser::read(element, "mode", m_mode);

        if (!modeParses) {
            log_error() << "Mode specified with bad format";
            return false;
        }
    }

    return true;
}

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bool softwarecontainer::Device::activate

(

std::shared_ptr< ContainerAbstractInterface >

container

)

Activates this device by running mknod and chmod commands which are run in the container.

Returns

true upon success, false otherwise

Definition at line 63 of file devicenode.cpp.

{
    if (!m_isConfigured) {
        log_info() << "Mapping device " << m_name;
        // Mount device in container
        if (!container->mountDevice(m_name)) {
            log_error() << "Unable to mount device " << m_name;
            return false;
        }

        // If mode is specified, try to set mode for the mounted device.
        if (m_mode != -1) {
            FunctionJob job(container, [&] () {
                return chmod(m_name.c_str(), m_mode);
            });
            job.start();
            job.wait();
            if (job.isError()) {
                log_error() << "Could not 'chmod " << m_mode
                            << "' the mounted device " << m_name;
                return false;
            }
        }
        m_isConfigured = true;
    }
    return true;
}

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The documentation for this class was generated from the following files:

• libsoftwarecontainer/src/gateway/devicenode/devicenode.h
• libsoftwarecontainer/src/gateway/devicenode/devicenode.cpp