35 lines
897 B
Bash
Executable File
35 lines
897 B
Bash
Executable File
#!/bin/sh
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UPDATES_VM=`qvm-get-updatevm`
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QREXEC_CLIENT=/usr/lib/qubes/qrexec_client
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if [ -z "$UPDATES_VM" ]; then
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echo "UpdateVM not set, exiting!" >&2
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exit 1
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fi
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if ! xl domid "$UPDATES_VM" > /dev/null 2>&1; then
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echo "UpdateVM not started, exiting!"
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exit 1
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fi
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# dd is supposed to not allow memory exhaustion
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# grep does basic sanity checking
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# there seems to be no way to pass output of date +%s.%N to date,
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# so we use human-readable format
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CURRENT_TIME="$($QREXEC_CLIENT -d $UPDATES_VM 'user:date -u' |
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dd count=1 2>/dev/null |
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grep '^[A-Za-z]* [A-Za-z]* [ 0-9][0-9] [0-9][0-9]:[0-9][0-9]:[0-9][0-9] [A-Z]* [0-9][0-9][0-9][0-9]$'|
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head -1)"
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if [ -n "$CURRENT_TIME" ] ; then
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echo Syncing Dom0 clock: setting time "$CURRENT_TIME"...
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sudo date -u -s "$CURRENT_TIME" ;
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echo Done.
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else
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echo "Error while parsing the time obtained from the UpdateVM ($UPDATES_VM).."
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fi
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