`LOCAL_PEERCRED`

Interface status:

externallyDefinedApi

LOCAL_PEERCRED 0x001

Socket options. retrieve peer credentials.

`LOCAL_CREDS`

Interface status:

externallyDefinedApi

LOCAL_CREDS 0x002

Socket options. pass credentials to receiver .

Interface status:

externallyDefinedApi

LOCAL_CONNWAIT 0x004

Socket options. connects block until accepted.

Interface status:

externallyDefinedApi

SUN_LEN (su) (sizeof(*(su)) - sizeof((su)->sun_path) + strlen((su)->sun_path))

actual length of an initialized sockaddr_unsockaddr_un

su