[Buildroot] [PATCH v3 09/13] package/dhcp: SysV init scripts: remove PID files after stop

["Benoît Thébaudeau" <benoit.thebaudeau.dev@gmail.com>]

From: Beno?t Th?baudeau <benoit@wsystem.com>

These daemons do not remove their PID files, so do it manually in the
scripts.

Signed-off-by: Beno?t Th?baudeau <benoit@wsystem.com>

---
Changes v2 -> v3: none.

Changes v1 -> v2:
 - Rebase.
---
 package/dhcp/S80dhcp-relay  | 12 ++++++++++--
 package/dhcp/S80dhcp-server | 12 ++++++++++--
 2 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/package/dhcp/S80dhcp-relay b/package/dhcp/S80dhcp-relay
index 211431b..9b8d65f 100755
--- a/package/dhcp/S80dhcp-relay
+++ b/package/dhcp/S80dhcp-relay
@@ -17,6 +17,9 @@ OPTIONS=""
 CFG_FILE="/etc/default/dhcrelay"
 [ -r "${CFG_FILE}" ] && . "${CFG_FILE}"
 
+# PID files generated by the daemon
+PID_FILES="/var/run/dhcrelay.pid /var/run/dhcrelay6.pid"
+
 # Sanity checks
 test -f /usr/sbin/dhcrelay || exit 0
 test -n "$INTERFACES" || exit 0
@@ -38,8 +41,13 @@ case "$1" in
 		;;
 	stop)
 		printf "Stopping DHCP relay: "
-		start-stop-daemon -K -q -x /usr/sbin/dhcrelay
-		[ $? = 0 ] && echo "OK" || echo "FAIL"
+		if start-stop-daemon -K -q -x /usr/sbin/dhcrelay; then
+			# This daemon does not remove its PID file when it exits.
+			rm -f ${PID_FILES}
+			echo "OK"
+		else
+			echo "FAIL"
+		fi
 		;;
 	restart | force-reload)
 		$0 stop
diff --git a/package/dhcp/S80dhcp-server b/package/dhcp/S80dhcp-server
index dc9c433..1c2ff74 100755
--- a/package/dhcp/S80dhcp-server
+++ b/package/dhcp/S80dhcp-server
@@ -14,6 +14,9 @@ OPTIONS=""
 CFG_FILE="/etc/default/dhcpd"
 [ -r "${CFG_FILE}" ] && . "${CFG_FILE}"
 
+# PID files generated by the daemon
+PID_FILES="/var/run/dhcpd.pid /var/run/dhcpd6.pid"
+
 # Sanity checks
 test -f /usr/sbin/dhcpd || exit 0
 test -f /etc/dhcp/dhcpd.conf || exit 0
@@ -28,8 +31,13 @@ case "$1" in
 		;;
 	stop)
 		printf "Stopping DHCP server: "
-		start-stop-daemon -K -q -x /usr/sbin/dhcpd
-		[ $? = 0 ] && echo "OK" || echo "FAIL"
+		if start-stop-daemon -K -q -x /usr/sbin/dhcpd; then
+			# This daemon does not remove its PID file when it exits.
+			rm -f ${PID_FILES}
+			echo "OK"
+		else
+			echo "FAIL"
+		fi
 		;;
 	restart | force-reload)
 		$0 stop
-- 
2.1.4