1 files changed, 84 insertions, 0 deletions
diff --git a/meta-openembedded/meta-networking/recipes-support/dnsmasq/files/dnsmasq.resolvconf b/meta-openembedded/meta-networking/recipes-support/dnsmasq/files/dnsmasq.resolvconf
new file mode 100755
index 000000000..06cd25cec
--- /dev/null
+++ b/meta-openembedded/meta-networking/recipes-support/dnsmasq/files/dnsmasq.resolvconf
@@ -0,0 +1,84 @@
+#!/bin/sh
+#
+# Script to update the resolver list for dnsmasq
+#
+# N.B. Resolvconf may run us even if dnsmasq is not (yet) running.
+# If dnsmasq is installed then we go ahead and update the resolver list
+# in case dnsmasq is started later.
+#
+# Assumption: On entry, PWD contains the resolv.conf-type files.
+#
+# This file is part of the dnsmasq package.
+#
+
+set -e
+
+RUN_DIR="/run/dnsmasq"
+RSLVRLIST_FILE="${RUN_DIR}/resolv.conf"
+TMP_FILE="${RSLVRLIST_FILE}_new.$$"
+MY_NAME_FOR_RESOLVCONF="dnsmasq"
+
+[ -x /usr/bin/dnsmasq ] || exit 0
+[ -x /lib/resolvconf/list-records ] || exit 1
+
+PATH=/bin:/sbin
+
+report_err() { echo "$0: Error: $*" >&2 ; }
+
+# Stores arguments (minus duplicates) in RSLT, separated by spaces
+# Doesn't work properly if an argument itself contains whitespace
+uniquify()
+{
+	RSLT=""
+	while [ "$1" ] ; do
+		for E in $RSLT ; do
+			[ "$1" = "$E" ] && { shift ; continue 2 ; }
+		done
+		RSLT="${RSLT:+$RSLT }$1"
+		shift
+	done
+}
+
+if [ ! -d "$RUN_DIR" ] && ! mkdir --parents --mode=0755 "$RUN_DIR" ; then
+	report_err "Failed trying to create directory $RUN_DIR"
+	exit 1
+fi
+
+RSLVCNFFILES=""
+for F in $(/lib/resolvconf/list-records --after "lo.$MY_NAME_FOR_RESOLVCONF") ; do
+	case "$F" in
+	    "lo.$MY_NAME_FOR_RESOLVCONF")
+		# Omit own record
+		;;
+	    lo.*)
+		# Include no more records after one for a local nameserver
+		RSLVCNFFILES="${RSLVCNFFILES:+$RSLVCNFFILES }$F"
+		break
+		;;
+	  *)
+		RSLVCNFFILES="${RSLVCNFFILES:+$RSLVCNFFILES }$F"
+		;;
+	esac
+done
+
+NMSRVRS=""
+if [ "$RSLVCNFFILES" ] ; then
+	uniquify $(sed -n -e 's/^[[:space:]]*nameserver[[:space:]]\+//p' $RSLVCNFFILES)
+	NMSRVRS="$RSLT"
+fi
+
+# Dnsmasq uses the mtime of $RSLVRLIST_FILE, with a resolution of one second,
+# to detect changes in the file. This means that if a resolvconf update occurs
+# within one second of the previous one then dnsmasq may fail to notice the
+# more recent change. To work around this problem we sleep one second here
+# if necessary in order to ensure that the new mtime is different.
+if [ -f "$RSLVRLIST_FILE" ] && [ "$(stat -c %X "$RSLVRLIST_FILE")" = "$(date +%s)" ] ; then
+	sleep 1
+fi
+
+clean_up() { rm -f "$TMP_FILE" ; }
+trap clean_up EXIT
+: >| "$TMP_FILE"
+for N in $NMSRVRS ; do echo "nameserver $N" >> "$TMP_FILE" ; done
+mv -f "$TMP_FILE" "$RSLVRLIST_FILE"
+