[PATCH bpf-next v9 8/9] selftests/bpf: Make sure mount directory exists

[Daan De Meyer <daan.j.demeyer@xxxxxxxxx>]

The mount directory for the selftests cgroup tree might
not exist so let's make sure it does exist by creating
it ourselves if it doesn't exist.

Signed-off-by: Daan De Meyer <daan.j.demeyer@xxxxxxxxx>
---
 tools/testing/selftests/bpf/cgroup_helpers.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/testing/selftests/bpf/cgroup_helpers.c b/tools/testing/selftests/bpf/cgroup_helpers.c
index 24ba56d42f2d..5b1da2a32ea7 100644
--- a/tools/testing/selftests/bpf/cgroup_helpers.c
+++ b/tools/testing/selftests/bpf/cgroup_helpers.c
@@ -199,6 +199,11 @@ int setup_cgroup_environment(void)
 
 	format_cgroup_path(cgroup_workdir, "");
 
+	if (mkdir(CGROUP_MOUNT_PATH, 0777) && errno != EEXIST) {
+		log_err("mkdir mount");
+		return 1;
+	}
+
 	if (unshare(CLONE_NEWNS)) {
 		log_err("unshare");
 		return 1;
-- 
2.41.0