Verify if the saved hostid is still the same and update if

it was changed.

Sponsored by:	iXsystems, Inc.
Obtained from:	FreeNAS (trueos commit 0abb740)

1 files changed, 11 insertions, 4 deletions

diff --git a/etc/rc.d/hostid_save b/etc/rc.d/hostid_save
index fca0521..9741aec 100755
--- a/etc/rc.d/hostid_save
+++ b/etc/rc.d/hostid_save
@@ -16,12 +16,19 @@ rcvar="hostid_enable"
 
 hostid_save()
 {
-	if [ ! -r ${hostid_file} ]; then
-		$SYSCTL_N kern.hostuuid > ${hostid_file}
-		if [ $? -ne 0 ]; then
-			warn "could not store hostuuid in ${hostid_file}."
+	current_hostid=`$SYSCTL_N kern.hostuuid`
+
+	if [ -r ${hostid_file} ]; then
+		read saved_hostid < ${hostid_file}
+		if [ ${saved_hostid} = ${current_hostid} ]; then
+			exit 0
 		fi
 	fi
+
+	echo ${current_hostid} > ${hostid_file}
+	if [ $? -ne 0 ]; then
+		warn "could not store hostuuid in ${hostid_file}."
+	fi
 }
 
 load_rc_config $name