linux-kernel - [RFC PATCH 07/11] block: Make partitions inherit namespace from whole disk device

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Message-Id: <1400103299-144589-8-git-send-email-seth.forshee@canonical.com>
Date:	Wed, 14 May 2014 16:34:55 -0500
From:	Seth Forshee <seth.forshee@...onical.com>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jens Axboe <axboe@...nel.dk>, Arnd Bergmann <arnd@...db.de>,
	Eric Biederman <ebiederm@...ssion.com>,
	Serge Hallyn <serge.hallyn@...onical.com>,
	lxc-devel@...ts.linuxcontainers.org,
	Seth Forshee <seth.forshee@...onical.com>
Subject: [RFC PATCH 07/11] block: Make partitions inherit namespace from whole disk device

When adding block devices for paritions the devices default to
ownership by init_user_ns. Instead assign them to the same
namespace as the device for the whole disk.

Signed-off-by: Seth Forshee <seth.forshee@...onical.com>
---
 block/partition-generic.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/block/partition-generic.c b/block/partition-generic.c
index 789cdea05893..7c1c83a072a6 100644
--- a/block/partition-generic.c
+++ b/block/partition-generic.c
@@ -17,6 +17,7 @@
 #include <linux/ctype.h>
 #include <linux/genhd.h>
 #include <linux/blktrace_api.h>
+#include <linux/user_namesapce.h>
 
 #include "partitions/check.h"
 
@@ -325,6 +326,7 @@ struct hd_struct *add_partition(struct gendisk *disk, int partno,
 	pdev->class = &block_class;
 	pdev->type = &part_type;
 	pdev->parent = ddev;
+	dev_set_ns(pdev, ddev->ns);
 
 	err = blk_alloc_devt(p, &devt);
 	if (err)
-- 
1.9.1

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