devices.allow and devices.deny are write-only, and devices.list is read-only.

Signed-off-by: Li Zefan <[email protected]>
---
 security/device_cgroup.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/security/device_cgroup.c b/security/device_cgroup.c
index 3aacd0f..b13fbb8 100644
--- a/security/device_cgroup.c
+++ b/security/device_cgroup.c
@@ -439,16 +439,19 @@ static struct cftype dev_cgroup_files[] = {
                .name = "allow",
                .write_string  = devcgroup_access_write,
                .private = DEVCG_ALLOW,
+               .mode = 0200,
        },
        {
                .name = "deny",
                .write_string = devcgroup_access_write,
                .private = DEVCG_DENY,
+               .mode = 0200,
        },
        {
                .name = "list",
                .read_seq_string = devcgroup_seq_read,
                .private = DEVCG_LIST,
+               .mode = 0444,
        },
 };
 
-- 1.5.4.rc3 
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