.\" Copyright (c) 1983 Regents of the University of California.
.\" All rights reserved. The Berkeley software License Agreement
.\" specifies the terms and conditions for redistribution.
.\" @(#)getprotoent.3 6.1 (Berkeley) %G%
getprotoent, getprotobynumber, getprotobyname, setprotoent, endprotoent \- get protocol entry
struct protoent *getprotoent()
struct protoent *getprotobyname(name)
struct protoent *getprotobynumber(proto)
each return a pointer to an object with the
containing the broken-out
fields of a line in the network protocol data base,
char *p_name; /* official name of protocol */
char **p_aliases; /* alias list */
long p_proto; /* protocol number */
The members of this structure are:
The official name of the protocol.
A zero terminated list of alternate names for the protocol.
reads the next line of the file, opening the file if necessary.
opens and rewinds the file. If the
the net data base will not be closed after each call to
(either directly, or indirectly through one of
the other \*(lqgetproto\*(rq calls).
sequentially search from the beginning
of the file until a matching
protocol number is found,
or until EOF is encountered.
(0) returned on EOF or error.
is contained in a static area
so it must be copied if it is
to be saved. Only the Internet
protocols are currently understood.