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

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Message-ID: <20231006074530.892825-9-daan.j.demeyer@gmail.com>
Date: Fri,  6 Oct 2023 09:45:02 +0200
From: Daan De Meyer <daan.j.demeyer@...il.com>
To: bpf@...r.kernel.org
Cc: Daan De Meyer <daan.j.demeyer@...il.com>,
	martin.lau@...ux.dev,
	kernel-team@...a.com,
	netdev@...r.kernel.org
Subject: [PATCH bpf-next v9 8/9] selftests/bpf: Make sure mount directory exists

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@...il.com>
---
 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