Date: 13 Oct 2001 18:27:08 +0200 From: Dag-Erling Smorgrav <des@ofug.org> To: arch@freebsd.org Subject: Generating host.conf for backward compatibility Message-ID: <xzplmifh5er.fsf_-_@flood.ping.uio.no> In-Reply-To: <xzp4rp3ippr.fsf@flood.ping.uio.no> References: <3BC67CBD.1DAAC031@DougBarton.net> <xzpr8s9av9n.fsf@flood.ping.uio.no> <3BC7EA21.15F43811@DougBarton.net> <xzp8zefiqhz.fsf@flood.ping.uio.no> <xzp4rp3ippr.fsf@flood.ping.uio.no>
next in thread | previous in thread | raw e-mail | index | archive | help
--=-=-=
In our eagerness to switch from host.conf to nsswitch.conf, we forgot
that old binaries and libraries (COMPAT_* and tons of third-party
software for which sources might not even be available) still expect
to find /etc/host.conf, and may not work (correctly) if it doesn't
exist.
The attached patch creates host.conf from nsswitch.conf if it detects
the latter. The first time you boot after upgrading from -STABLE or
an old -CURRENT, nsswitch.conf will be created, and host.conf won't be
touched; all subsequent times, host.conf will be auto-generated from
the information contained in nsswitch.conf.
DES
--
Dag-Erling Smorgrav - des@ofug.org
--=-=-=
Content-Type: text/x-patch
Content-Disposition: attachment; filename=host_conf.diff
Index: etc/rc.network
===================================================================
RCS file: /home/ncvs/src/etc/rc.network,v
retrieving revision 1.105
diff -u -r1.105 rc.network
--- etc/rc.network 10 Oct 2001 20:36:51 -0000 1.105
+++ etc/rc.network 13 Oct 2001 16:23:35 -0000
@@ -38,16 +38,21 @@
network_pass1() {
echo -n 'Doing initial network setup:'
+ # Generate host.conf for compatibility
+ #
+ if [ -f "/etc/nsswitch.conf" ]; then
+ echo ''
+ echo 'Generating /etc/host.conf for compatibility'
+ generate_host_conf /etc/nsswitch.conf /etc/host.conf
+ fi
+
# Convert host.conf to nsswitch.conf if necessary
- if [ -f "/etc/host.conf" ]; then
+ #
+ if [ -f "/etc/host.conf" -a ! -f "/etc/nsswitch.conf" ]; then
echo ''
echo 'Warning: /etc/host.conf is no longer used'
- if [ -f "/etc/nsswitch.conf" ]; then
- echo ' /etc/nsswitch.conf will be used instead'
- else
- echo ' /etc/nsswitch.conf will be created for you'
- convert_host_conf /etc/host.conf /etc/nsswitch.conf
- fi
+ echo ' /etc/nsswitch.conf will be created for you'
+ convert_host_conf /etc/host.conf /etc/nsswitch.conf
fi
# Set the host name if it is not already set
@@ -827,3 +832,25 @@
}' < $host_conf > $nsswitch_conf
}
+generate_host_conf() {
+ nsswitch_conf=$1; shift;
+ host_conf=$1; shift;
+
+ awk '
+BEGIN {
+ xlat["files"] = "hosts";
+ xlat["dns"] = "bind";
+ xlat["nis"] = "nis";
+}
+/^hosts:/ {
+ print "# Auto-generated, do not edit";
+ for (n = 2; n <= NF; ++n)
+ if ($n in xlat)
+ print xlat[$n];
+ quit;
+}
+// {
+ next;
+}
+' <$nsswitch_conf >$host_conf
+}
--=-=-=--
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-arch" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?xzplmifh5er.fsf_-_>