selftests/sysctl: add sysctl macro test

Cc: Luis Chamberlain <[e-mail]>
Cc: Kees Cook <[e-mail]>
Cc: Iurii Zaikin <[e-mail]>
Cc: "David S. Miller" <[e-mail]>
Cc: Jakub Kicinski <[e-mail]>
Cc: Paolo Abeni <[e-mail]>
Cc: Hideaki YOSHIFUJI <[e-mail]>
Cc: David Ahern <[e-mail]>
Cc: Simon Horman <[e-mail]>
Cc: Julian Anastasov <[e-mail]>
Cc: Pablo Neira Ayuso <[e-mail]>
Cc: Jozsef Kadlecsik <[e-mail]>
Cc: Florian Westphal <[e-mail]>
Cc: Shuah Khan <[e-mail]>
Cc: Andrew Morton <[e-mail]>
Cc: Alexei Starovoitov <[e-mail]>
Cc: Eric Dumazet <[e-mail]>
Cc: Lorenz Bauer <[e-mail]>
Cc: Akhmat Karakotov <[e-mail]>
Signed-off-by: Tonghao Zhang <[e-mail]>
Signed-off-by: Paolo Abeni <[e-mail]>

lib/test_sysctl.c

···
 
 static int i_zero;
 static int i_one_hundred = 100;
+static int match_int_ok = 1;
 
 struct test_sysctl_data {
 	int int_0001;
···
 		.proc_handler	= proc_dointvec,
 	},
 	{
+		.procname	= "match_int",
+		.data		= &match_int_ok,
+		.maxlen		= sizeof(match_int_ok),
+		.mode		= 0444,
+		.proc_handler	= proc_dointvec,
+	},
+	{
 		.procname	= "boot_int",
 		.data		= &test_data.boot_int,
 		.maxlen		= sizeof(test_data.boot_int),
···
 
 static int __init test_sysctl_init(void)
 {
+	int i;
+
+	struct {
+		int defined;
+		int wanted;
+	} match_int[] = {
+		{.defined = *(int *)SYSCTL_ZERO,	.wanted = 0},
+		{.defined = *(int *)SYSCTL_ONE,		.wanted = 1},
+		{.defined = *(int *)SYSCTL_TWO,		.wanted = 2},
+		{.defined = *(int *)SYSCTL_THREE,	.wanted = 3},
+		{.defined = *(int *)SYSCTL_FOUR,	.wanted = 4},
+		{.defined = *(int *)SYSCTL_ONE_HUNDRED, .wanted = 100},
+		{.defined = *(int *)SYSCTL_TWO_HUNDRED,	.wanted = 200},
+		{.defined = *(int *)SYSCTL_ONE_THOUSAND, .wanted = 1000},
+		{.defined = *(int *)SYSCTL_THREE_THOUSAND, .wanted = 3000},
+		{.defined = *(int *)SYSCTL_INT_MAX,	.wanted = INT_MAX},
+		{.defined = *(int *)SYSCTL_MAXOLDUID,	.wanted = 65535},
+		{.defined = *(int *)SYSCTL_NEG_ONE,	.wanted = -1},
+	};
+
+	for (i = 0; i < ARRAY_SIZE(match_int); i++)
+		if (match_int[i].defined != match_int[i].wanted)
+			match_int_ok = 0;
+
 	test_data.bitmap_0001 = kzalloc(SYSCTL_TEST_BITMAP_SIZE/8, GFP_KERNEL);
 	if (!test_data.bitmap_0001)
 		return -ENOMEM;

tools/testing/selftests/sysctl/sysctl.sh

···
 ALL_TESTS="$ALL_TESTS 0005:3:1:int_0003"
 ALL_TESTS="$ALL_TESTS 0006:50:1:bitmap_0001"
 ALL_TESTS="$ALL_TESTS 0007:1:1:boot_int"
+ALL_TESTS="$ALL_TESTS 0008:1:1:match_int"
 
 function allow_user_defaults()
 {
···
 	return $ksft_skip
 }
 
+sysctl_test_0008()
+{
+	TARGET="${SYSCTL}/match_int"
+	if [ ! -f $TARGET ]; then
+		echo "Skipping test for $TARGET as it is not present ..."
+		return $ksft_skip
+	fi
+
+	echo -n "Testing if $TARGET is matched in kernel"
+	ORIG_VALUE=$(cat "${TARGET}")
+
+	if [ $ORIG_VALUE -ne 1 ]; then
+		echo "TEST FAILED"
+		rc=1
+		test_rc
+	fi
+
+	echo "ok"
+	return 0
+}
+
 list_tests()
 {
 	echo "Test ID list:"
···
 	echo "0005 x $(get_test_count 0005) - tests proc_douintvec() array"
 	echo "0006 x $(get_test_count 0006) - tests proc_do_large_bitmap()"
 	echo "0007 x $(get_test_count 0007) - tests setting sysctl from kernel boot param"
+	echo "0008 x $(get_test_count 0008) - tests sysctl macro values match"
 }
 
 usage()