Generate new UUID if system UUID is known bad or malformed and add a two
seconds sleep if we found the system UUID be invalid. Obtained from: FreeNAS MFC after: 2 weeks
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parent
26e4122a80
commit
3f6cf39fb2
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=282114
@ -1,6 +1,7 @@
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#!/bin/sh
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#
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# Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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# Copyright (c) 2015 Xin LI <delphij@FreeBSD.org>
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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@ -55,23 +56,66 @@ hostid_set()
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${SYSCTL} kern.hostid=${id} >/dev/null
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}
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valid_hostid()
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{
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uuid=$1
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x="[0-9a-f]"
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y=$x$x$x$x
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# Check against a blacklist before
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# accepting the UUID.
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case "${uuid}" in
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00000000-0000-0000-0000-000000000000)
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;;
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00020003-0004-0005-0006-000700080009)
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;;
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03000200-0400-0500-0006-000700080009)
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;;
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07090201-0103-0301-0807-060504030201)
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;;
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11111111-1111-1111-1111-111111111111)
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;;
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11111111-2222-3333-4444-555555555555)
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;;
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4c4c4544-0000-2010-8020-80c04f202020)
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;;
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58585858-5858-5858-5858-585858585858)
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;;
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890e2d14-cacd-45d1-ae66-bc80e8bfeb0f)
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;;
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8e275844-178f-44a8-aceb-a7d7e5178c63)
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;;
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dc698397-fa54-4cf2-82c8-b1b5307a6a7f)
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;;
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fefefefe-fefe-fefe-fefe-fefefefefefe)
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;;
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*-ffff-ffff-ffff-ffffffffffff)
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;;
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$y$y-$y-$y-$y-$y$y$y)
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return 0
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;;
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esac
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return 1
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}
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hostid_hardware()
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{
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uuid=`kenv -q smbios.system.uuid`
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x="[0-9a-f]"
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y=$x$x$x$x
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case "${uuid}" in
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$y$y-$y-$y-$y-$y$y$y)
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if valid_hostid $uuid; then
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echo "${uuid}"
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;;
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esac
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fi
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}
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hostid_generate()
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{
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# First look for UUID in hardware.
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uuid=`hostid_hardware`
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if [ -z ${uuid} ]; then
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if [ -z "${uuid}" ]; then
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warn "hostid: unable to figure out a UUID from DMI data, generating a new one"
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sleep 2
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# If not found, fall back to software-generated UUID.
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uuid=`uuidgen`
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fi
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@ -92,11 +136,15 @@ hostid_start()
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{
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# If ${hostid_file} already exists, we take UUID from there.
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if [ -r ${hostid_file} ]; then
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hostid_set `cat ${hostid_file}`
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else
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# No hostid file, generate UUID.
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hostid_generate
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read saved_hostid < ${hostid_file}
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if valid_hostid ${saved_hostid}; then
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hostid_set `cat ${hostid_file}`
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exit 0
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fi
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fi
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# No hostid file, generate UUID.
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hostid_generate
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}
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load_rc_config $name
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