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Increased paranoia of communication companies post NSA revelations
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cmpt_get_peer_cid(3) Library Functions Manual cmpt_get_peer_cid(3) NAME
cmpt_get_peer_cid(), cmpt_get_endpoint_cid() - get the compartment IDs for INET domain communications. SYNOPSIS
Parameters s INET domain socket or stream. DESCRIPTION
The and functions return the compartments associated with an INET domain transport endpoint (a socket or a stream). The function returns the compartment ID (cid) associated with the transport endpoint s. The cid of a transport endpoint is set to the process's cid at the time of creation, and does not change even when it is transferred between processes or the creating process changes its compartment. The function returns the compartment ID of the peer that the transport endpoint s is communicating with. For loopback communications, the cid is the one associated with the peer transport endpoint. For communications over a network interface, the peer cid is the one associ- ated with the network interface where communications are being received. For TCP communications, the peer cid is persistent once a connec- tion is established. For other protocols, the peer cid may change for each packet that is received. The function returns an error if a connection is not established (for TCP) or no communication has been received (for all other protocols). RETURN VALUE
and return the following values: Successful completion. The function returns a valid compartment ID. Function failed. is set to indicate the error from the underlying system call. ERRORS
See ioctl(2) for errors indicated by DEPENDENCIES
These functions are a part of the library. SEE ALSO
compartments(4), compartments(5). cmpt_get_peer_cid(3)
