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-rwxr-xr-xsrc/etc/rc.d/hostid137
1 files changed, 137 insertions, 0 deletions
diff --git a/src/etc/rc.d/hostid b/src/etc/rc.d/hostid
new file mode 100755
index 0000000..37ea173
--- /dev/null
+++ b/src/etc/rc.d/hostid
@@ -0,0 +1,137 @@
+#!/bin/sh
+#
+# Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org>
+# Copyright (c) 2015 Xin LI <delphij@FreeBSD.org>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# $FreeBSD$
+#
+
+# PROVIDE: hostid
+# REQUIRE: sysctl
+# KEYWORD: nojail
+
+. /etc/rc.subr
+
+name="hostid"
+start_cmd="hostid_start"
+stop_cmd=":"
+reset_cmd="hostid_reset"
+extra_commands="reset"
+rcvar="hostid_enable"
+
+hostid_set()
+{
+ uuid=$1
+ # Generate hostid based on hostuuid - take first four bytes from md5(uuid).
+ id=`echo -n $uuid | /sbin/md5`
+ id="0x${id%????????????????????????}"
+
+ # Set both kern.hostuuid and kern.hostid.
+ #
+ check_startmsgs && echo "Setting hostuuid: ${uuid}."
+ ${SYSCTL} kern.hostuuid="${uuid}" >/dev/null
+ check_startmsgs && echo "Setting hostid: ${id}."
+ ${SYSCTL} kern.hostid=${id} >/dev/null
+}
+
+valid_hostid()
+{
+ uuid=$1
+
+ x="[0-9a-f]"
+ y=$x$x$x$x
+
+ # Check against a blacklist before
+ # accepting the UUID.
+ case "${uuid}" in
+ 00000000-0000-0000-0000-000000000000)
+ ;;
+ 00020003-0004-0005-0006-000700080009)
+ ;;
+ 03000200-0400-0500-0006-000700080009)
+ ;;
+ 07090201-0103-0301-0807-060504030201)
+ ;;
+ 11111111-1111-1111-1111-111111111111)
+ ;;
+ 11111111-2222-3333-4444-555555555555)
+ ;;
+ 4c4c4544-0000-2010-8020-80c04f202020)
+ ;;
+ 58585858-5858-5858-5858-585858585858)
+ ;;
+ 890e2d14-cacd-45d1-ae66-bc80e8bfeb0f)
+ ;;
+ 8e275844-178f-44a8-aceb-a7d7e5178c63)
+ ;;
+ dc698397-fa54-4cf2-82c8-b1b5307a6a7f)
+ ;;
+ fefefefe-fefe-fefe-fefe-fefefefefefe)
+ ;;
+ *-ffff-ffff-ffff-ffffffffffff)
+ ;;
+ $y$y-$y-$y-$y-$y$y$y)
+ return 0
+ ;;
+ esac
+
+ return 1
+}
+
+hostid_generate()
+{
+ # First look for UUID in hardware.
+ # If not found, fall back to software-generated UUID.
+ uuid=`uuidgen`
+ hostid_set $uuid
+}
+
+hostid_reset()
+{
+ hostid_generate
+ # Store newly generated UUID in ${hostid_file}.
+ echo $uuid > ${hostid_file}
+ if [ $? -ne 0 ]; then
+ warn "could not store hostuuid in ${hostid_file}."
+ fi
+}
+
+hostid_start()
+{
+ # If ${hostid_file} already exists, we take UUID from there.
+ if [ -r ${hostid_file} ]; then
+ read saved_hostid < ${hostid_file}
+ if valid_hostid ${saved_hostid}; then
+ hostid_set `cat ${hostid_file}`
+ exit 0
+ fi
+ fi
+
+ # No hostid file, generate UUID.
+ hostid_generate
+}
+
+load_rc_config $name
+run_rc_command "$1"
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