netconfig(5)
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NETCONFIG(5) NetBSD Programmer's Manual NETCONFIG(5)
NAME
netconfig - network configuration data base
SYNOPSIS
/etc/netconfig
DESCRIPTION
The netconfig file defines a list of ``transport names'', describing
their semantics and protocol. In NetBSD, this file is only used by the
RPC library code. Entries consist of the following fields:
network_id
The name of the transport described.
semantics
Describes the semantics of the transport. This can be one of:
tpi_clts
Connectionless transport.
tpi_cots
Connection-oriented transport
tpi_cots_ord
Connection-oriented, ordered transport.
tpi_raw
A raw connection.
flags This field is either blank (``-''), or contains a ``v'', meaning
visible to the getnetconfig(3) function.
protofamily
The protocol family of the transport. This is currently one of:
inet6 The IPv6 ( PF_INET6) family of protocols.
inet The IPv4 ( PF_INET) family of protocols.
loopback
The PF_LOCAL protocol family.
protoname
The name of the protocol used for this transport. Can currently
be either udp, tcp or empty.
device This field is always empty in NetBSD.
nametoaddr_libs
This field is always empty in NetBSD.
The order of entries in this file will determine which transport will be
preferred by the RPC library code, given a match on a specified network
type. For example, if a sample network config file would look like this:
udp6 tpi_clts v inet6 udp - -
tcp6 tpi_cots_ord v inet6 tcp - -
udp tpi_clts v inet udp - -
tcp tpi_cots_ord v inet tcp - -
rawip tpi_raw - inet - - -
local tpi_cots_ord - loopback - - -
then using the network type udp in calls to the RPC library function (see
rpc(3) ) will make the code first try udp6, and then udp.
getnetconfig(3) and associated functions will parse this file and return
structures of the following format:
struct netconfig {
char *nc_netid; /* Network ID */
unsigned long nc_semantics; /* Semantics (see below) */
unsigned long nc_flag; /* Flags (see below) */
char *nc_protofmly; /* Protocol family */
char *nc_proto; /* Protocol name */
char *nc_device; /* Network device pathname (unused) */
unsigned long nc_nlookups; /* Number of lookup libs (unused) */
char **nc_lookups; /* Names of the libraries (unused) */
unsigned long nc_unused[9]; /* reserved */
};
SEE ALSO
getnetconfig(3), getnetpath(3)
FILES
/etc/netconfig
June 2, 2000 2
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