3 # Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org>
4 # Copyright (c) 2015 Xin LI <delphij@FreeBSD.org>
7 # Redistribution and use in source and binary forms, with or without
8 # modification, are permitted provided that the following conditions
10 # 1. Redistributions of source code must retain the above copyright
11 # notice, this list of conditions and the following disclaimer.
12 # 2. Redistributions in binary form must reproduce the above copyright
13 # notice, this list of conditions and the following disclaimer in the
14 # documentation and/or other materials provided with the distribution.
16 # THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
17 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
20 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 desc="Generate a unique host ID"
39 start_cmd="hostid_start"
41 reset_cmd="hostid_reset"
42 extra_commands="reset"
48 # Generate hostid based on hostuuid - take first four bytes from md5(uuid).
49 id=`echo -n $uuid | /sbin/md5`
50 id="0x${id%????????????????????????}"
52 # Set both kern.hostuuid and kern.hostid.
54 check_startmsgs && echo "Setting hostuuid: ${uuid}."
55 ${SYSCTL} kern.hostuuid="${uuid}" >/dev/null
56 check_startmsgs && echo "Setting hostid: ${id}."
57 ${SYSCTL} kern.hostid=${id} >/dev/null
67 # Check against a blacklist before
70 00000000-0000-0000-0000-000000000000)
72 00020003-0004-0005-0006-000700080009)
74 03000200-0400-0500-0006-000700080009)
76 07090201-0103-0301-0807-060504030201)
78 11111111-1111-1111-1111-111111111111)
80 11111111-2222-3333-4444-555555555555)
82 4c4c4544-0000-2010-8020-80c04f202020)
84 58585858-5858-5858-5858-585858585858)
86 890e2d14-cacd-45d1-ae66-bc80e8bfeb0f)
88 8e275844-178f-44a8-aceb-a7d7e5178c63)
90 dc698397-fa54-4cf2-82c8-b1b5307a6a7f)
92 fefefefe-fefe-fefe-fefe-fefefefefefe)
94 *-ffff-ffff-ffff-ffffffffffff)
106 uuid=`kenv -q smbios.system.uuid`
108 if valid_hostid $uuid; then
115 # First look for UUID in hardware.
116 uuid=`hostid_hardware`
117 if [ -z "${uuid}" ]; then
118 warn "hostid: unable to figure out a UUID from DMI data, generating a new one"
120 # If not found, fall back to software-generated UUID.
129 # Store newly generated UUID in ${hostid_file}.
130 echo $uuid > ${hostid_file}
131 if [ $? -ne 0 ]; then
132 warn "could not store hostuuid in ${hostid_file}."
138 # If ${hostid_file} already exists, we take UUID from there.
139 if [ -r ${hostid_file} ]; then
140 read saved_hostid < ${hostid_file}
141 if valid_hostid ${saved_hostid}; then
142 hostid_set `cat ${hostid_file}`
147 # No hostid file, generate UUID.