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rc.d/hostid_save saves a UUID generated by rc.d/hostid in /etc/hostid. Store the same UUID, without hyphens, in /etc/machine-id. The hypĥens are removed with a shell function because hostid_save runs before file systems are mounted so other tools may not be available yet. This eliminates some duplication between hostid and machine-id and for virtual machines machine-id now contains the UUID configured in the hypervisor like it does on Linux. Reviewed by: delphij Discussed with: bapt MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D38811
48 lines
889 B
Bash
Executable file
48 lines
889 B
Bash
Executable file
#!/bin/sh
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#
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# $FreeBSD$
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#
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# PROVIDE: hostid_save
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# REQUIRE: hostid root
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# KEYWORD: nojail
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. /etc/rc.subr
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name="hostid_save"
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desc="Save unique host ID to disk"
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start_cmd="hostid_save"
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stop_cmd=":"
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rcvar="hostid_enable"
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hostid_machine_id()
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{
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local IFS
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IFS=-
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set -- ${current_hostid}
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IFS=
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current_machine_id=$*
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}
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hostid_save()
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{
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current_hostid=`$SYSCTL_N kern.hostuuid`
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read saved_hostid 2>/dev/null < ${hostid_file}
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if [ "${saved_hostid}" != "${current_hostid}" ]; then
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echo "${current_hostid}" > ${hostid_file} ||
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warn "could not store hostuuid in ${hostid_file}."
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fi
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hostid_machine_id
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read saved_machine_id 2>/dev/null < ${machine_id_file}
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if [ "${saved_machine_id}" != "${current_machine_id}" ]; then
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echo "${current_machine_id}" > ${machine_id_file} ||
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warn "could not store hostuuid in ${machine_id_file}."
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fi
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}
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load_rc_config $name
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run_rc_command "$1"
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