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authorBernat, Yehezkel <yehezkel.bernat@intel.com>2017-08-15 08:19:12 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-08-28 17:21:32 +0300
commit0956e41169222822d3557871fcd1d32e4fa7e934 (patch)
treef9dd165b53f8d497b1051b28966847085a175deb /drivers/thunderbolt
parent8fdd6ab36197ad891233572c57781b1f537da0ac (diff)
downloadlinux-0956e41169222822d3557871fcd1d32e4fa7e934.tar.xz
thunderbolt: Make key root-only accessible
Non-root user may read the key back after root wrote it there. This removes read access to everyone but root. Signed-off-by: Yehezkel Bernat <yehezkel.bernat@intel.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/thunderbolt')
-rw-r--r--drivers/thunderbolt/switch.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c
index 69fde0b30eda..8510abcee5d2 100644
--- a/drivers/thunderbolt/switch.c
+++ b/drivers/thunderbolt/switch.c
@@ -826,7 +826,7 @@ static ssize_t key_store(struct device *dev, struct device_attribute *attr,
mutex_unlock(&switch_lock);
return ret;
}
-static DEVICE_ATTR_RW(key);
+static DEVICE_ATTR(key, 0600, key_show, key_store);
static ssize_t nvm_authenticate_show(struct device *dev,
struct device_attribute *attr, char *buf)