From: Joel Granados <j.granados@xxxxxxxxxxx>
Basic test to ensure that empty directories can be registered and that
they in turn can serve as a base dir for other registrations.
Add one test to the sysctl selftest module. It first registers an empty
directory under "empty_add" and then uses that as a base to register
another empty dir.
The sysctl bash script then checks that "empty_add" is present and that
there an empty directory within it.
Signed-off-by: Joel Granados <j.granados@xxxxxxxxxxx>
---
lib/test_sysctl.c | 29 +++++++++++++++++++++++++++++
tools/testing/selftests/sysctl/sysctl.sh | 23 +++++++++++++++++++++++
2 files changed, 52 insertions(+)
diff --git a/lib/test_sysctl.c b/lib/test_sysctl.c
index 8036aa91a1cb..730908bc1c2b 100644
--- a/lib/test_sysctl.c
+++ b/lib/test_sysctl.c
@@ -35,6 +35,8 @@ static struct {
struct ctl_table_header *test_h_setup_node;
struct ctl_table_header *test_h_mnt;
struct ctl_table_header *test_h_mnterror;
+ struct ctl_table_header *empty_add;
+ struct ctl_table_header *empty;
} sysctl_test_headers;
struct test_sysctl_data {
@@ -220,6 +222,25 @@ static int test_sysctl_run_register_mount_point(void)
return 0;
}
+static struct ctl_table test_table_empty[] = { };
+
+static int test_sysctl_run_register_empty(void)
+{
+ /* Tets that an empty dir can be created */
+ sysctl_test_headers.empty_add
+ = register_sysctl("debug/test_sysctl/empty_add", test_table_empty);
+ if (!sysctl_test_headers.empty_add)
+ return -ENOMEM;
+
+ /* Test that register on top of an empty dir works */
+ sysctl_test_headers.empty
+ = register_sysctl("debug/test_sysctl/empty_add/empty", test_table_empty);
+ if (!sysctl_test_headers.empty)
+ return -ENOMEM;
+
+ return 0;
+}
+
static int __init test_sysctl_init(void)
{
int err;
@@ -233,6 +254,10 @@ static int __init test_sysctl_init(void)
goto out;
err = test_sysctl_run_register_mount_point();
+ if (err)
+ goto out;
+
+ err = test_sysctl_run_register_empty();
out:
return err;
@@ -248,6 +273,10 @@ static void __exit test_sysctl_exit(void)
unregister_sysctl_table(sysctl_test_headers.test_h_mnt);
if (sysctl_test_headers.test_h_mnterror)
unregister_sysctl_table(sysctl_test_headers.test_h_mnterror);
+ if (sysctl_test_headers.empty)
+ unregister_sysctl_table(sysctl_test_headers.empty);
+ if (sysctl_test_headers.empty_add)
+ unregister_sysctl_table(sysctl_test_headers.empty_add);
}
module_exit(test_sysctl_exit);
diff --git a/tools/testing/selftests/sysctl/sysctl.sh b/tools/testing/selftests/sysctl/sysctl.sh
index 444b2befda82..e956d2c3b7e9 100755
--- a/tools/testing/selftests/sysctl/sysctl.sh
+++ b/tools/testing/selftests/sysctl/sysctl.sh
@@ -35,6 +35,7 @@ ALL_TESTS="$ALL_TESTS 0007:1:1:boot_int:1"
ALL_TESTS="$ALL_TESTS 0008:1:1:match_int:1"
ALL_TESTS="$ALL_TESTS 0009:1:1:unregister_error:0"
ALL_TESTS="$ALL_TESTS 0010:1:1:mnt/mnt_error:0"
+ALL_TESTS="$ALL_TESTS 0011:1:1:empty_add:0"
function allow_user_defaults()
{
@@ -828,6 +829,27 @@ sysctl_test_0010()
return 0
}
+sysctl_test_0011()
+{
+ TARGET="${SYSCTL}/$(get_test_target 0011)"
+ echo -n "Testing empty dir handling in ${TARGET} ... "
+ if [ ! -d ${TARGET} ]; then
+ echo -e "FAIL\nCould not create ${TARGET}" >&2
+ rc=1
+ test_rc
+ fi
+
+ TARGET2="${TARGET}/empty"
+ if [ ! -d ${TARGET2} ]; then
+ echo -e "FAIL\nCould not create ${TARGET2}" >&2
+ rc=1
+ test_rc
+ fi
+
+ echo "OK"
+ return 0
+}
+
list_tests()
{
echo "Test ID list:"
@@ -846,6 +868,7 @@ list_tests()
echo "0008 x $(get_test_count 0008) - tests sysctl macro values match"
echo "0009 x $(get_test_count 0009) - tests sysct unregister"
echo "0010 x $(get_test_count 0010) - tests sysct mount point"
+ echo "0011 x $(get_test_count 0011) - tests empty directories"
}
usage()
--
2.30.2
