source: mainline/contrib/arch/uspace/srv/fs/devfs/devfs.bp

(
        ?ipc_m_connect_me_to ;
        (
                ?mounted {
                        ?ipc_m_data_write /* mount options */
                } +

                ?lookup {
                        tentative {
                                [/uspace/lib/libc/fnc.devmap_device_get_handle] ;
                                tentative {
                                        [/uspace/lib/libc/fnc.devmap_device_connect]
                                }
                        }
                } +

                ?open_node {
                        tentative {
                                [/uspace/lib/libc/fnc.devmap_device_connect]
                        }
                } +

                ?read {
                        tentative {
                                ?ipc_m_data_read /* payload */ {
                                        !device.read {
                                                !device.ipc_m_data_read /* forward */
                                        }
                                } +
                                (
                                        [/uspace/lib/libc/fnc.devmap_device_get_count] ;
                                        [/uspace/lib/libc/fnc.devmap_device_get_devices]
                                )
                        }
                } +

                ?write {
                        tentative {
                                ?ipc_m_data_write /* payload */ {
                                        !device.write {
                                                !device.ipc_m_data_write /* forward */
                                        }
                                }
                        }
                } +

                ?stat {
                        ?ipc_m_data_read /* struct data */
                } +

                ?close {
                        !device.ipc_m_phone_hungup
                } +

                ?mount +
                ?truncate +
                ?destroy +
                ?sync
        )* ;
        ?ipc_m_phone_hungup
)* ;
!vfs.ipc_m_phone_hungup