initial commit

init.d/hostid.in

@@ -0,0 +1,88 @@
+#!@SBINDIR@/openrc-run
+# Copyright (c) 2007-2015 The OpenRC Authors.
+# See the Authors file at the top-level directory of this distribution and
+# https://github.com/OpenRC/openrc/blob/master/AUTHORS
+#
+# This file is part of OpenRC. It is subject to the license terms in
+# the LICENSE file found in the top-level directory of this
+# distribution and at https://github.com/OpenRC/openrc/blob/master/LICENSE
+# This file may not be copied, modified, propagated, or distributed
+# except according to the terms contained in the LICENSE file.
+
+extra_commands="reset"
+: ${hostid_file:=/etc/hostid}
+
+depend()
+{
+	use root
+	after clock
+	before devd net
+	keyword -jail -prefix
+}
+
+_set()
+{
+	local id=0
+
+	if [ -n "$1" ]; then
+		id=$(echo "$1" | md5)
+		id="0x${id%????????????????????????}"
+	fi
+	ebegin "Setting Host ID: $id"
+	sysctl -w kern.hostid="$id" >/dev/null
+	eend $? || return 1
+
+	if sysctl -n kern.hostuuid >/dev/null 2>&1; then
+		[ -n "$1" ] && id=$1
+		ebegin "Setting Host UUID: $id"
+		sysctl kern.hostuuid="$id" >/dev/null
+		eend $? || return 1
+	fi
+
+}
+
+# First we check to see if there is a system UUID
+# If so then we use that and erase the hostid file,
+# otherwise we generate a random UUID.
+reset()
+{
+	local uuid= x="[0-9a-f]" y="$x$x$x$x"
+
+	if command -v kenv >/dev/null 2>&1; then
+		uuid=$(kenv smbios.system.uuid 2>/dev/null)
+	fi
+	case "$uuid" in
+		$y$y-$y-$y-$y-$y$y$y);;
+		*) uuid=;;
+	esac
+
+	if [ -n "$uuid" ]; then
+		rm -f "$hostid_file"
+	else
+		uuid=$(uuidgen)
+		if [ -z "$uuid" ]; then
+			eerror "Unable to generate a UUID"
+			return 1
+		fi
+		if ! echo "$uuid" >"$hostid_file"; then
+			eerror "Failed to store UUID in \`$hostid_file'"
+			return 1
+		fi
+	fi
+
+	_set "$uuid"
+}
+
+start()
+{
+	if [ -r "$hostid_file" ]; then
+		_set $(cat "$hostid_file")
+	else
+		reset
+	fi
+}
+
+stop()
+{
+	_set
+}