From 2d6c8a3ee15ae8b1c68fbc6e6e36d2d321ee95fe Mon Sep 17 00:00:00 2001
From: Bill Nottingham <notting@redhat.com>
Date: Mon, 30 Aug 2004 19:12:52 +0000
Subject: move to right branch

---
 sysconfig/network-scripts/ifdown-post       |  2 +-
 sysconfig/network-scripts/ifup-post         |  6 ++---
 sysconfig/network-scripts/network-functions | 39 +++++++++++++++++++++++++++++
 3 files changed, 42 insertions(+), 5 deletions(-)

(limited to 'sysconfig')

diff --git a/sysconfig/network-scripts/ifdown-post b/sysconfig/network-scripts/ifdown-post
index 6c244ca1..b88e5e3b 100755
--- a/sysconfig/network-scripts/ifdown-post
+++ b/sysconfig/network-scripts/ifdown-post
@@ -10,7 +10,7 @@ source_config
 
 if [ "${DEVICETYPE}" = "ppp" -o "${DEVICETYPE}" = "ippp" ]; then
     if [ -f /etc/resolv.conf.save ]; then
-	cat /etc/resolv.conf.save > /etc/resolv.conf
+	change_resolv_conf /etc/resolv.conf.save
 	rm -f /etc/resolv.conf.save
     fi
     if [ -f /etc/ppp/peers/$DEVICE ] ; then
diff --git a/sysconfig/network-scripts/ifup-post b/sysconfig/network-scripts/ifup-post
index 401d1e8c..77b678bc 100755
--- a/sysconfig/network-scripts/ifup-post
+++ b/sysconfig/network-scripts/ifup-post
@@ -19,9 +19,7 @@ if [ "$PEERDNS" != "no" -o -n "$RESOLV_MODS" -a "$RESOLV_MODS" != "no" ]; then
   [ -n "$MS_DNS1" ] && DNS1=$MS_DNS1
   [ -n "$MS_DNS2" ] && DNS2=$MS_DNS2
   if [ -n "$DNS1" ] && ! grep -q "^nameserver $DNS1" /etc/resolv.conf &&
-   tr=`mktemp /tmp/resolv.XXXXXX` ; then
-    # replace only the first two nameserver lines; cannot count on awk
-    # and do not know if sed is capable of this...
+   tr=`mktemp /tmp/XXXXXX` ; then
     current_replacement="$DNS1"
     next_replacement="$DNS2"
     search=
@@ -67,7 +65,7 @@ if [ "$PEERDNS" != "no" -o -n "$RESOLV_MODS" -a "$RESOLV_MODS" != "no" ]; then
     # but set umask in case it doesn't exist!
     oldumask=`umask`
     umask 022
-    cat $tr > /etc/resolv.conf
+    change_resolv_conf $tr 
     rm -f $tr
     umask $oldumask
   fi
diff --git a/sysconfig/network-scripts/network-functions b/sysconfig/network-scripts/network-functions
index 5f1135de..1f68ebc5 100644
--- a/sysconfig/network-scripts/network-functions
+++ b/sysconfig/network-scripts/network-functions
@@ -314,3 +314,42 @@ is_wireless_device ()
     LC_ALL=C iwconfig $1 2>&1 | grep -q "no wireless extensions" || return 0
     return 1
 }
+
+# Invoke this when /etc/resolv.conf has changed:
+change_resolv_conf ()
+{
+    s=`/bin/grep '^[\ \	]*option' /etc/resolv.conf 2>/dev/null`;
+    if [ "x$s" != "x" ]; then
+       s="$s"$'\n';
+    fi;
+    if [ $# -gt 1 ]; then
+       let n_args=$#;
+       while [ $n_args -gt 0 ]; 
+	 do 
+	    if [[ "$s" = *$1* ]]; then
+	       shift;
+               continue;
+            fi;
+	    s="$s$1";
+            shift; 
+	    if [ $# -gt 0 ]; then
+		s="$s"$'\n';
+	    fi;
+	    let n_args=n_args-1; 
+         done;       
+    elif [ $# -eq 1 ]; then
+       if [ "x$s" != "x" ]; then
+	  s="$s"`/bin/grep -vF "$s" $1`;
+       else
+	  s=`cat $1`;
+       fi;
+    fi;
+    (echo "$s" > /etc/resolv.conf;) >/dev/null 2>&1;
+    r=$?
+    if [ $r -eq 0 ]; then
+	/sbin/initlog -f local7 -p notice -n NET -s "$0 : updated /etc/resolv.conf";
+	[ -e /var/lock/subsys/nscd ] && /usr/sbin/nscd -i hosts; # invalidate cache
+	return $?;
+    fi;
+    return $r;
+}
-- 
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