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initramfs: fix killing child PIDs #496

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merged 1 commit into from
Nov 7, 2024
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initramfs: fix killing child PIDs #496

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15 changes: 13 additions & 2 deletions src/initramfs-tools/scripts/local-bottom/clevis.in
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Original file line number Diff line number Diff line change
Expand Up @@ -34,11 +34,22 @@ esac
[ -s /run/clevis.pid ] || exit 0

pid=$(cat /run/clevis.pid)
child_pids=$(ps -o pid,ppid | awk -v pid="$pid" '$2==pid { print $1 }')
child_pids="$({ ps -o pid,ppid 2>/dev/null || ps -l ||
{ echo 'clevis: unable to get list of processes' >&2; exit 1; }; } |
awk -v pid="$pid" '
NR==1 {
for (i=1; i<=NF; i++) if ($i == "PID") pid_col = i; else if ($i == "PPID") ppid_col = i
if (!pid_col || !ppid_col) { print "clevis: unable to find PID and/or PPID columns in ps output" | "cat >&2"; exit 1 }
next
}
{ if ($ppid_col == pid) print $pid_col }')"

for kill_pid in $pid $child_pids; do
kill "$kill_pid"
kill "$kill_pid" 2>/dev/null
done

rm -f /run/clevis.pid

# Not really worried about downing extra interfaces: they will come up
# during the actual boot. Might make this configurable later if needed.

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