#!/bin/sh
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (c) 2015 Fujitsu Ltd.
# Author: Guangwen Feng <fenggw-fnst@cn.fujitsu.com>
#
# Test basic functionality of lsmod command.

TST_TESTFUNC=lsmod_test
TST_NEEDS_TMPDIR=1
TST_NEEDS_CMDS="lsmod"
. tst_test.sh

lsmod_matches_proc_modules()
{
	lsmod_output=$(lsmod | awk '!/Module/{print $1, $2, $3}' | sort)
	if [ -z "$lsmod_output" ]; then
		tst_brk TBROK "Failed to parse the output from lsmod"
	fi

	modules_output=$(awk '{print $1, $2, $3}' /proc/modules | sort)
	if [ -z "$modules_output" ]; then
		tst_brk TBROK "Failed to parse /proc/modules"
	fi

	if [ "$lsmod_output" != "$modules_output" ]; then
		tst_res TINFO "lsmod output different from /proc/modules"

		echo "$lsmod_output" > temp1
		echo "$modules_output" > temp2
		if tst_cmd_available diff; then
			diff temp1 temp2
		else
			cat temp1 temp2
		fi

		return 1
	fi
	return 0
}

lsmod_test()
{
	for i in $(seq 1 5); do
		if lsmod_matches_proc_modules; then
			tst_res TPASS "'lsmod' passed"
			return
		fi
		tst_res TINFO "Trying again"
		sleep 1
	done
	tst_res TFAIL "'lsmod' doesn't match /proc/modules output"
}

tst_run