From: Yongqin Liu <yongqin.liu@linaro.org>
Date: Thu, 28 Apr 2016 05:53:36 +0000 (+0800)
Subject: quick selinux support for tracefs
X-Git-Tag: firefly_0821_release~176^2~399^2~14
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=284430f2784e49c5c6d59f8b58c47220602069f8;p=firefly-linux-kernel-4.4.55.git

quick selinux support for tracefs

Here is just the quick fix for tracefs with selinux.
just add tracefs to the list of whitelisted filesystem
types in selinux_is_sblabel_mnt(), but the right fix would be to
generalize this logic as described in the last item on the todo list,
https://bitbucket.org/seandroid/wiki/wiki/ToDo

Change-Id: I2aa803ccffbcd2802a7287514da7648e6b364157
Signed-off-by: Yongqin Liu <yongqin.liu@linaro.org>
---

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 9b0586d0f3c4..94a0bfc748d1 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -420,6 +420,7 @@ static int selinux_is_sblabel_mnt(struct super_block *sb)
 		!strcmp(sb->s_type->name, "sysfs") ||
 		!strcmp(sb->s_type->name, "pstore") ||
 		!strcmp(sb->s_type->name, "debugfs") ||
+		!strcmp(sb->s_type->name, "tracefs") ||
 		!strcmp(sb->s_type->name, "rootfs");
 }