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-rwxr-xr-xtest/testsuite-80.units/test.sh63
1 files changed, 63 insertions, 0 deletions
diff --git a/test/testsuite-80.units/test.sh b/test/testsuite-80.units/test.sh
new file mode 100755
index 0000000..565ed8d
--- /dev/null
+++ b/test/testsuite-80.units/test.sh
@@ -0,0 +1,63 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: LGPL-2.1-or-later
+# shellcheck disable=SC2016
+set -eux
+set -o pipefail
+
+sync_in() {
+ read -r x < /tmp/syncfifo2
+ test "$x" = "$1"
+}
+
+sync_out() {
+ echo "$1" > /tmp/syncfifo1
+}
+
+export SYSTEMD_LOG_LEVEL=debug
+
+echo "toplevel PID: $BASHPID"
+
+systemd-notify --status="Test starts"
+sync_out a
+sync_in b
+(
+ echo "subshell PID: $BASHPID"
+
+ # Make us main process
+ systemd-notify --pid="$BASHPID"
+
+ # Lock down access to just us
+ systemd-notify "NOTIFYACCESS=main"
+
+ # This should still work
+ systemd-notify --status="Sending READY=1 in an unprivileged process"
+
+ # Send as subprocess of the subshell, this should not work
+ systemd-notify --ready --pid=self --status "BOGUS1"
+
+ sync_out c
+ sync_in d
+
+ # Move main process back to toplevel
+ systemd-notify --pid=parent "MAINPID=$$"
+
+ # Should be dropped again
+ systemd-notify --status="BOGUS2" --pid=parent
+
+ # Apparently, bash will automatically invoke the last command in a subshell
+ # via a simple execve() rather than fork()ing first. But we want that the
+ # previous command uses the subshell's PID, hence let's insert a final,
+ # bogus redundant command as last command to run in the subshell, so that
+ # bash can't optimize things like that.
+ echo "bye"
+)
+
+echo "toplevel again: $BASHPID"
+
+systemd-notify --ready --status="OK"
+systemd-notify "NOTIFYACCESS=none"
+systemd-notify --status="BOGUS3"
+
+sync_out e
+
+exec sleep infinity