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btest-bg-run-helper: Ignore SIGTERM to self during cleanup #105

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btest-bg-run-helper: Ignore SIGTERM to self during cleanup #105

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14 changes: 13 additions & 1 deletion btest-bg-run-helper
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Original file line number Diff line number Diff line change
Expand Up @@ -3,9 +3,21 @@
# Internal helper for btest-bg-run.

cleanup() {
# Ignore SIGTERM during cleanup to prevent terminating
# this process when sending signals to the process group.
trap true SIGTERM

if [ ! -e .exitcode ]; then
echo 15 >.exitcode
kill 0 &>/dev/null

# Send SIGTERM to all processes of the process group.
# We do not use pid 0 here, as the btest-setsid helper
# may have failed and we don't want to send signals to
# processes in a process group we never created.
#
# This will terminate any well-behaved background commands
# that were spawned by the program under test.
kill SIGTERM -${BASHPID} &>/dev/null

if [ -n "$pid" ]; then
kill -0 "$pid" &>/dev/null && kill "$pid"
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