linux-kernel - [PATCH 3/3] Enable security.selinux in user namespaces

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Message-Id: <1498157989-11814-4-git-send-email-stefanb@linux.vnet.ibm.com>
Date:   Thu, 22 Jun 2017 14:59:49 -0400
From:   Stefan Berger <stefanb@...ux.vnet.ibm.com>
To:     ebiederm@...ssion.com, containers@...ts.linux-foundation.org
Cc:     lkp@...org, xiaolong.ye@...el.com, linux-kernel@...r.kernel.org,
        zohar@...ux.vnet.ibm.com, serge@...lyn.com, tycho@...ker.com,
        James.Bottomley@...senPartnership.com,
        christian.brauner@...lbox.org, stefanb@...ux.vnet.ibm.com,
        vgoyal@...hat.com, amir73il@...il.com,
        linux-security-module@...r.kernel.org
Subject: [PATCH 3/3] Enable security.selinux in user namespaces

Before the current modifications, SELinux extended attributes were
visible inside the user namespace but changes in patch 1 hid them.
This patch enables security.selinux in user namespaces and allows
them to be written to in the same way as security.capability.

Signed-off-by: Stefan Berger <stefanb@...ux.vnet.ibm.com>
---
 fs/xattr.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/xattr.c b/fs/xattr.c
index 045be85..37686ee 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -138,6 +138,7 @@ xattr_permission(struct inode *inode, const char *name, int mask)
  */
 static const char *const userns_xattrs[] = {
 	XATTR_NAME_CAPS,
+	XATTR_NAME_SELINUX,
 	NULL
 };
 
-- 
2.7.4