linux-kernel - [PATCH 4.19 333/338] selftests: cgroup: Make cg_create() use 0755 for permission instead of 0644

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Message-Id: <20220414110848.369410824@linuxfoundation.org>
Date:   Thu, 14 Apr 2022 15:13:56 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Michal Koutný <mkoutny@...e.com>,
        Tejun Heo <tj@...nel.org>,
        Ovidiu Panait <ovidiu.panait@...driver.com>
Subject: [PATCH 4.19 333/338] selftests: cgroup: Make cg_create() use 0755 for permission instead of 0644

From: Tejun Heo <tj@...nel.org>

commit b09c2baa56347ae65795350dfcc633dedb1c2970 upstream.

0644 is an odd perm to create a cgroup which is a directory. Use the regular
0755 instead. This is necessary for euid switching test case.

Reviewed-by: Michal Koutný <mkoutny@...e.com>
Signed-off-by: Tejun Heo <tj@...nel.org>
[OP: backport to 4.19: adjust context]
Signed-off-by: Ovidiu Panait <ovidiu.panait@...driver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 tools/testing/selftests/cgroup/cgroup_util.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/tools/testing/selftests/cgroup/cgroup_util.c
+++ b/tools/testing/selftests/cgroup/cgroup_util.c
@@ -192,7 +192,7 @@ int cg_find_unified_root(char *root, siz
 
 int cg_create(const char *cgroup)
 {
-	return mkdir(cgroup, 0644);
+	return mkdir(cgroup, 0755);
 }
 
 static int cg_killall(const char *cgroup)