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author | pjd <pjd@FreeBSD.org> | 2007-04-11 00:05:25 +0000 |
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committer | pjd <pjd@FreeBSD.org> | 2007-04-11 00:05:25 +0000 |
commit | 1e6e7c9b8c8234c23911142b6ecdf6cecacc8534 (patch) | |
tree | a20bd0456d862a8590ed32d932e7b51140c2bfb1 /etc | |
parent | c22a6a4408dcbbfb42eaaee954606c913c141660 (diff) | |
download | FreeBSD-src-1e6e7c9b8c8234c23911142b6ecdf6cecacc8534.zip FreeBSD-src-1e6e7c9b8c8234c23911142b6ecdf6cecacc8534.tar.gz |
If available, take UUID from smbios.system.uuid, if not fall back to
software-generated UUID. Store the result in /etc/hostid and use it in
the future. Perform simple UUID format check, as there is a lot of
hardware with broken UUIDs. The check should be improved to also eliminate
fake UUIDs like 00000000-0000-0000-0000-000000000000.
Requested by: many
Diffstat (limited to 'etc')
-rw-r--r-- | etc/rc.d/hostid | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/etc/rc.d/hostid b/etc/rc.d/hostid index b380180..2ba4398 100644 --- a/etc/rc.d/hostid +++ b/etc/rc.d/hostid @@ -54,9 +54,26 @@ hostid_set() ${SYSCTL_W} kern.hostid=${id} >/dev/null } +hostid_hardware() +{ + uuid=`kenv smbios.system.uuid 2>/dev/null` + x="[0-9a-zA-Z]" + y=$x$x$x$x + case "${uuid}" in + $y$y-$y-$y-$y-$y$y$y) + echo "${uuid}" + ;; + esac +} + hostid_reset() { - uuid=`uuidgen` + # First look for UUID in hardware. + uuid=`hostid_hardware` + if [ -z ${uuid} ]; then + # If not found, fall back to software-generated UUID. + uuid=`uuidgen` + fi # Store newly generated UUID in ${hostid_file}. echo $uuid > ${hostid_file} if [ $? -ne 0 ]; then |