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head/sbin/init/rc.d/hostid
Property | Old Value | New Value |
---|---|---|
svn:executable | null | * \ No newline at end of property |
svn:keywords | null | FreeBSD=%H \ No newline at end of property |
#!/bin/sh | |||||
# | |||||
# Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org> | |||||
# Copyright (c) 2015 Xin LI <delphij@FreeBSD.org> | |||||
# | |||||
# 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" | |||||
desc="Generate a unique host ID" | |||||
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_hardware() | |||||
{ | |||||
uuid=`kenv -q smbios.system.uuid` | |||||
if valid_hostid $uuid; then | |||||
echo "${uuid}" | |||||
fi | |||||
} | |||||
hostid_generate() | |||||
{ | |||||
# First look for UUID in hardware. | |||||
uuid=`hostid_hardware` | |||||
if [ -z "${uuid}" ]; then | |||||
warn "hostid: unable to figure out a UUID from DMI data, generating a new one" | |||||
sleep 2 | |||||
# If not found, fall back to software-generated UUID. | |||||
uuid=`uuidgen` | |||||
fi | |||||
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" |