netutils

Documentation

Index

• Constants
• func AbstractUnixReceiveFd(sockFD int, flags uint) (*os.File, error)
• func AbstractUnixReceiveFdData(sockFD int, numFds int, flags uint, iov unsafe.Pointer, iovLen int32) (uint64, []C.int, error)
• func AbstractUnixSendFd(sockFD int, sendFD int) error
• func NetnsGetifaddrs(initPID int32, hostInterfaces []net.Interface) (map[string]api.InstanceStateNetwork, error)

Constants

const UnixFdsAcceptExact uint = C.UNIX_FDS_ACCEPT_EXACT

UnixFdsAcceptExact will only succeed if the exact amount of fds has been received (unless combined with UNIX_FDS_ACCEPT_NONE).

const UnixFdsAcceptLess uint = C.UNIX_FDS_ACCEPT_LESS

UnixFdsAcceptLess will also succeed if less than the requested number of fd has been received. If the UNIX_FDS_ACCEPT_NONE flag is not raised than at least one fd must be received.

const UnixFdsAcceptMask uint = C.UNIX_FDS_ACCEPT_MASK

UnixFdsAcceptMask is the value of all the above flags or-ed together.

const UnixFdsAcceptMore uint = C.UNIX_FDS_ACCEPT_MORE

UnixFdsAcceptMore will also succeed if more than the requested number of fds have been received. Any additional fds will be silently closed. If the UNIX_FDS_ACCEPT_NONE flag is not raised than at least one fd must be received.

const UnixFdsAcceptNone uint = C.UNIX_FDS_ACCEPT_NONE

UnixFdsAcceptNone can be specified with any of the above flags and indicates that the caller will accept no file descriptors to be received.

const UnixFdsReceivedExact uint = C.UNIX_FDS_RECEIVED_EXACT

UnixFdsReceivedExact indicates that the exact number of fds was received.

const UnixFdsReceivedLess uint = C.UNIX_FDS_RECEIVED_LESS

UnixFdsReceivedLess indicates that less than the requested number of fd has been received.

const UnixFdsReceivedMore uint = C.UNIX_FDS_RECEIVED_MORE

UnixFdsReceivedMore indicates that more than the requested number of fd has been received.

const UnixFdsReceivedNone uint = C.UNIX_FDS_RECEIVED_NONE

UnixFdsReceivedNone indicates that no fds have been received.

Functions

func AbstractUnixReceiveFd

func AbstractUnixReceiveFd(sockFD int, flags uint) (*os.File, error)

AbstractUnixReceiveFd receives a Unix file descriptor from a Unix socket.

func AbstractUnixReceiveFdData

func AbstractUnixReceiveFdData(sockFD int, numFds int, flags uint, iov unsafe.Pointer, iovLen int32) (uint64, []C.int, error)

AbstractUnixReceiveFdData is a low level function to receive a file descriptor over a unix socket.

func AbstractUnixSendFd

func AbstractUnixSendFd(sockFD int, sendFD int) error

AbstractUnixSendFd sends a Unix file descriptor over a Unix socket.

func NetnsGetifaddrs

func NetnsGetifaddrs(initPID int32, hostInterfaces []net.Interface) (map[string]api.InstanceStateNetwork, error)

NetnsGetifaddrs returns a map of InstanceStateNetwork for a particular process.