test: add a couple of tests for systemd-modules-load

test/units/testsuite-74.modules-load.sh

@@ -0,0 +1,88 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: LGPL-2.1-or-later
+set -eux
+set -o pipefail
+
+MODULES_LOAD_BIN="/usr/lib/systemd/systemd-modules-load"
+CONFIG_FILE="/run/modules-load.d/99-test.conf"
+
+at_exit() {
+    rm -rfv "${CONFIG_FILE:?}"
+}
+
+trap at_exit EXIT
+
+if systemd-detect-virt -cq; then
+    echo "Running in a container, skipping the systemd-modules-load test..."
+    exit 0
+fi
+
+# Check if we have required kernel modules
+modprobe --all --resolve-alias loop dummy
+
+mkdir -p /run/modules-load.d/
+
+"$MODULES_LOAD_BIN"
+"$MODULES_LOAD_BIN" --help
+"$MODULES_LOAD_BIN" --version
+
+# Explicit config file
+modprobe -v --all --remove loop dummy
+printf "loop\ndummy" >"$CONFIG_FILE"
+"$MODULES_LOAD_BIN" "$CONFIG_FILE" |& tee /tmp/out.log
+grep -E "Inserted module .*loop" /tmp/out.log
+grep -E "Inserted module .*dummy" /tmp/out.log
+
+# Implicit config file
+modprobe -v --all --remove loop dummy
+printf "loop\ndummy" >"$CONFIG_FILE"
+"$MODULES_LOAD_BIN" |& tee /tmp/out.log
+grep -E "Inserted module .*loop" /tmp/out.log
+grep -E "Inserted module .*dummy" /tmp/out.log
+
+# Valid & invalid data mixed together
+modprobe -v --all --remove loop dummy
+cat >"$CONFIG_FILE" <<EOF
+
+loop
+loop
+loop
+    loop
+dummy
+    \\n\n\n\\\\\\
+ 
+loo!@@123##2455
+# This is a comment
+$(printf "%.0sx" {0..4096})
+dummy
+loop
+foo-bar-baz
+1
+"
+'
+EOF
+"$MODULES_LOAD_BIN" |& tee /tmp/out.log
+grep -E "^Inserted module .*loop" /tmp/out.log
+grep -E "^Inserted module .*dummy" /tmp/out.log
+grep -E "^Failed to find module .*foo-bar-baz" /tmp/out.log
+(! grep -E "This is a comment" /tmp/out.log)
+# Each module should be loaded only once, even if specified multiple times
+[[ "$(grep -Ec "^Inserted module" /tmp/out.log)" -eq 2 ]]
+[[ "$(grep -Ec "^Failed to find module" /tmp/out.log)" -eq 7 ]]
+
+# Command line arguments
+modprobe -v --all --remove loop dummy
+# Make sure we have no config files left over that might interfere with
+# following tests
+rm -fv "$CONFIG_FILE"
+[[ -z "$(systemd-analyze cat-config modules-load.d)" ]]
+CMDLINE="ro root= modules_load= modules_load=, / = modules_load=foo-bar-baz,dummy modules_load=loop,loop,loop"
+SYSTEMD_PROC_CMDLINE="$CMDLINE" "$MODULES_LOAD_BIN" |& tee /tmp/out.log
+grep -E "^Inserted module .*loop" /tmp/out.log
+grep -E "^Inserted module .*dummy" /tmp/out.log
+grep -E "^Failed to find module .*foo-bar-baz" /tmp/out.log
+# Each module should be loaded only once, even if specified multiple times
+[[ "$(grep -Ec "^Inserted module" /tmp/out.log)" -eq 2 ]]
+
+(! "$MODULES_LOAD_BIN" --nope)
+(! "$MODULES_LOAD_BIN" /foo/bar/baz)