getrpcport.3r

早期freebsd实现

.\" @(#)getrpcport.3r	2.2 88/08/02 4.0 RPCSRC; from 1.12 88/02/26 SMI
.TH GETRPCPORT 3R "6 October 1987"
.SH NAME
getrpcport \- get RPC port number
.SH SYNOPSIS
.ft B
.nf
int getrpcport(host, prognum, versnum, proto)
	char *host;
	int prognum, versnum, proto;
.fi
.SH DESCRIPTION
.IX getrpcport "" "\fLgetrpcport\fR \(em get RPC port number"
.B getrpcport(\|)
returns the port number for version
.I versnum
of the RPC program
.I prognum
running on
.I host
and using protocol
.IR proto .
It returns 0 if it cannot contact the portmapper, or if
.I prognum
is not registered.  If
.I prognum
is registered but not with version
.IR versnum ,
it will still return a port number (for some version of the program)
indicating that the program is indeed registered.
The version mismatch will be detected upon the first call to the service.