From: Roy Marples <roy@marples.name>
Date: Wed, 14 Dec 2011 07:59:54 +0000 (+0000)
Subject: Only regen resolv.conf if we need to as some processes could monitor it
X-Git-Tag: v5.5.0~12
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=83c08c2068b3f264906a7c0222f974cd248244ba;p=thirdparty%2Fdhcpcd.git

Only regen resolv.conf if we need to as some processes could monitor it
for changes and restart themselves needlessly.
---

diff --git a/dhcpcd-hooks/20-resolv.conf b/dhcpcd-hooks/20-resolv.conf
index fbb64dca..73ae92a7 100644
--- a/dhcpcd-hooks/20-resolv.conf
+++ b/dhcpcd-hooks/20-resolv.conf
@@ -63,8 +63,9 @@ build_resolv_conf()
 	else
 		echo "# /etc/resolv.conf.tail can replace this line" >> "$cf"
 	fi
-	cat "$cf" > /etc/resolv.conf
-	chmod 644 /etc/resolv.conf
+	if change_file /etc/resolv.conf "$cf"; then
+		chmod 644 /etc/resolv.conf
+	fi
 	rm -f "$cf"
 }