Date: Fri, 15 Sep 2000 11:52:31 -0400 (EDT) From: Robert Watson <rwatson@FreeBSD.ORG> To: David Malone <dwmalone@maths.tcd.ie> Cc: Chris Ptacek <ptacek@dashmail.net>, freebsd-hackers@FreeBSD.ORG Subject: Re: Getting all the IP address for a machine from code... Message-ID: <Pine.NEB.3.96L.1000915115131.45037D-100000@fledge.watson.org> In-Reply-To: <20000914095622.A25929@gosset.maths.tcd.ie>
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On Thu, 14 Sep 2000, David Malone wrote: > On Wed, Sep 13, 2000 at 08:12:47PM -0700, Chris Ptacek wrote: > > I am looking for a way to get all the IP addresses that are configured a > > machine. I need to do this in c source code, and without using DNS services > > (ie: gethostname/gethostbyname won't work). I am hoping there are some > > system calls I can use to get this information. Thanks in advance for any > > help. > > You could use getifaddrs in FreeBSD 4 and later - otherwise you'll > need to use sysctl to get the list of interfaces and addresses. It is possible to get interface lists on earlier versions (and I hope still current versions) using the ioctl interfaces described in Stevens. See also ifconfig.c source from various versions of FreeBSD :-). Robert N M Watson robert@fledge.watson.org http://www.watson.org/~robert/ PGP key fingerprint: AF B5 5F FF A6 4A 79 37 ED 5F 55 E9 58 04 6A B1 TIS Labs at Network Associates, Safeport Network Services To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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