[OE-core] [PATCH] watchdog: fix service PIDFile in do_install_append

[Trevor Gamblin]

From: Trevor Gamblin <trevor.gamblin at windriver.com>

systemd requests an update to the unit file for watchdog.service
due to the contents of PIDFile:

  systemd[1]: /usr/lib/systemd/system/watchdog.service:11: PIDFile=
    references a path below legacy directory /var/run/, updating
    /var/run/watchdog.pid → /run/watchdog.pid; please update the
    unit file accordingly.

Use sed in do_install_append to fix the path from
/var/run/watchdog.pid to /run/watchdog.pid. This change is
recommended in services with the "forking" type (see commit
a9353a5c5b in systemd source).

Signed-off-by: Trevor Gamblin <trevor.gamblin at windriver.com>
---
 meta/recipes-extended/watchdog/watchdog_5.15.bb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/meta/recipes-extended/watchdog/watchdog_5.15.bb b/meta/recipes-extended/watchdog/watchdog_5.15.bb
index 1acab2e9e7..83a4ef27cf 100644
--- a/meta/recipes-extended/watchdog/watchdog_5.15.bb
+++ b/meta/recipes-extended/watchdog/watchdog_5.15.bb
@@ -51,8 +51,12 @@ do_install_append() {
 
 	install -Dm 0755 ${WORKDIR}/watchdog.init ${D}/${sysconfdir}/init.d/watchdog
 	install -Dm 0755 ${WORKDIR}/wd_keepalive.init ${D}${sysconfdir}/init.d/wd_keepalive
+    
+    # watchdog is of type "forking", so fix PIDFile to avoid warnings from
+    # systemd
+    sed -i 's@/var/run@/run at g' ${D}${systemd_system_unitdir}/watchdog.service
 
-	# watchdog.conf is provided by the watchdog-config recipe
+    # watchdog.conf is provided by the watchdog-config recipe
 	rm ${D}${sysconfdir}/watchdog.conf
 }
 
-- 
2.21.0