linux-kernel - [PATCH] security: selinux: allow per-file labeling for bpffs

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Date:   Thu,  6 Feb 2020 08:55:27 -0800
From:   Steven Moreland <smoreland@...gle.com>
To:     paul@...l-moore.com, sds@...ho.nsa.gov, eparis@...isplace.org,
        keescook@...omium.org, anton@...msg.org, ccross@...roid.com,
        tony.luck@...el.com, selinux@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-team@...roid.com
Cc:     "Connor O'Brien" <connoro@...gle.com>,
        Steven Moreland <smoreland@...gle.com>
Subject: [PATCH] security: selinux: allow per-file labeling for bpffs

From: Connor O'Brien <connoro@...gle.com>

Add support for genfscon per-file labeling of bpffs files. This allows
for separate permissions for different pinned bpf objects, which may
be completely unrelated to each other.

Change-Id: I03ae28d3afea70acd6dc53ebf810b34b357b6eb5
Signed-off-by: Connor O'Brien <connoro@...gle.com>
Signed-off-by: Steven Moreland <smoreland@...gle.com>
---
 security/selinux/hooks.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index de4887742d7c..4f9396e6ce8c 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -872,6 +872,7 @@ static int selinux_set_mnt_opts(struct super_block *sb,
 	    !strcmp(sb->s_type->name, "sysfs") ||
 	    !strcmp(sb->s_type->name, "pstore") ||
 	    !strcmp(sb->s_type->name, "binder") ||
+	    !strcmp(sb->s_type->name, "bpf") ||
 	    !strcmp(sb->s_type->name, "cgroup") ||
 	    !strcmp(sb->s_type->name, "cgroup2"))
 		sbsec->flags |= SE_SBGENFS;
-- 
2.25.0.341.g760bfbb309-goog