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From 6e732b6e44ad8eb3e94c47459c64f0bc6ef2fcb0 Mon Sep 17 00:00:00 2001
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From: Anita Zhang <the.anitazha@gmail.com>
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Date: Sat, 25 Jan 2020 16:46:16 +0100
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Subject: [PATCH] core: transition to FINAL_SIGTERM state after ExecStopPost=
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Fixes #14566
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(cherry picked from commit c1566ef0d22ed786b9ecf4c476e53b8a91e67578)
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Resolves: #1766479
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---
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src/core/service.c | 10 +++++
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test/TEST-47-ISSUE-14566/Makefile | 1 +
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test/TEST-47-ISSUE-14566/repro.sh | 5 +++
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test/TEST-47-ISSUE-14566/test.sh | 55 +++++++++++++++++++++++++++
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test/TEST-47-ISSUE-14566/testsuite.sh | 23 +++++++++++
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5 files changed, 94 insertions(+)
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create mode 120000 test/TEST-47-ISSUE-14566/Makefile
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create mode 100755 test/TEST-47-ISSUE-14566/repro.sh
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create mode 100755 test/TEST-47-ISSUE-14566/test.sh
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create mode 100755 test/TEST-47-ISSUE-14566/testsuite.sh
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diff --git a/src/core/service.c b/src/core/service.c
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index b1ec52d220..5035dcacac 100644
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--- a/src/core/service.c
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+++ b/src/core/service.c
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@@ -3280,6 +3280,12 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
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break;
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case SERVICE_STOP_POST:
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+
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+ if (control_pid_good(s) <= 0)
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+ service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
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+
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+ break;
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+
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case SERVICE_FINAL_SIGTERM:
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case SERVICE_FINAL_SIGKILL:
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@@ -3415,6 +3421,10 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
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break;
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case SERVICE_STOP_POST:
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+ if (main_pid_good(s) <= 0)
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+ service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
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+ break;
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+
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case SERVICE_FINAL_SIGTERM:
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case SERVICE_FINAL_SIGKILL:
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if (main_pid_good(s) <= 0)
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diff --git a/test/TEST-47-ISSUE-14566/Makefile b/test/TEST-47-ISSUE-14566/Makefile
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new file mode 120000
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index 0000000000..e9f93b1104
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--- /dev/null
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+++ b/test/TEST-47-ISSUE-14566/Makefile
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@@ -0,0 +1 @@
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+../TEST-01-BASIC/Makefile
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\ No newline at end of file
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diff --git a/test/TEST-47-ISSUE-14566/repro.sh b/test/TEST-47-ISSUE-14566/repro.sh
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new file mode 100755
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index 0000000000..5217602257
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--- /dev/null
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+++ b/test/TEST-47-ISSUE-14566/repro.sh
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@@ -0,0 +1,5 @@
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+#!/bin/bash
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+
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+sleep infinity &
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+echo $! > /leakedtestpid
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+wait $!
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diff --git a/test/TEST-47-ISSUE-14566/test.sh b/test/TEST-47-ISSUE-14566/test.sh
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new file mode 100755
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index 0000000000..0ce772164a
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--- /dev/null
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+++ b/test/TEST-47-ISSUE-14566/test.sh
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@@ -0,0 +1,55 @@
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+#!/bin/bash
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+set -e
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+TEST_DESCRIPTION="Test that KillMode=mixed does not leave left over proccesses with ExecStopPost="
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+. $TEST_BASE_DIR/test-functions
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+
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+test_setup() {
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+ create_empty_image
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+ mkdir -p $TESTDIR/root
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+ mount ${LOOPDEV}p1 $TESTDIR/root
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+
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+ (
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+ LOG_LEVEL=5
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+ eval $(udevadm info --export --query=env --name=${LOOPDEV}p2)
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+
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+ setup_basic_environment
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+
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+ # mask some services that we do not want to run in these tests
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+ ln -fs /dev/null $initdir/etc/systemd/system/systemd-hwdb-update.service
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+ ln -fs /dev/null $initdir/etc/systemd/system/systemd-journal-catalog-update.service
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+ ln -fs /dev/null $initdir/etc/systemd/system/systemd-networkd.service
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+ ln -fs /dev/null $initdir/etc/systemd/system/systemd-networkd.socket
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+ ln -fs /dev/null $initdir/etc/systemd/system/systemd-resolved.service
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+ ln -fs /dev/null $initdir/etc/systemd/system/systemd-machined.service
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+
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+ # setup the testsuite service
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+ cat >$initdir/etc/systemd/system/testsuite.service <
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+[Unit]
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+Description=Testsuite service
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+
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+[Service]
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+ExecStart=/testsuite.sh
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+Type=oneshot
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+EOF
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+ cat > $initdir/etc/systemd/system/issue_14566_test.service << EOF
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+[Unit]
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+Description=Issue 14566 Repro
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+
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+[Service]
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+ExecStart=/repro.sh
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+ExecStopPost=/bin/true
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+KillMode=mixed
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+EOF
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+
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+ cp testsuite.sh $initdir/
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+ cp repro.sh $initdir/
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+
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+ setup_testsuite
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+ )
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+ setup_nspawn_root
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+
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+ ddebug "umount $TESTDIR/root"
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+ umount $TESTDIR/root
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+}
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+
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+do_test "$@"
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diff --git a/test/TEST-47-ISSUE-14566/testsuite.sh b/test/TEST-47-ISSUE-14566/testsuite.sh
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new file mode 100755
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index 0000000000..d917cf52ff
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--- /dev/null
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+++ b/test/TEST-47-ISSUE-14566/testsuite.sh
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@@ -0,0 +1,23 @@
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+#!/bin/bash
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+set -ex
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+set -o pipefail
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+
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+systemd-analyze log-level debug
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+systemd-analyze log-target console
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+
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+systemctl start issue_14566_test
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+systemctl status issue_14566_test
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+
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+leaked_pid=$(cat /leakedtestpid)
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+
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+systemctl stop issue_14566_test
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+
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+# Leaked PID will still be around if we're buggy.
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+# I personally prefer to see 42.
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+ps -p "$leaked_pid" && exit 42
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+
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+systemd-analyze log-level info
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+
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+echo OK > /testok
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+
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+exit 0
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