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Date: Mon, 17 Feb 2020 17:14:36 +0100 From: Christian Brauner <christian.brauner@...ntu.com> To: "David S. Miller" <davem@...emloft.net>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, linux-kernel@...r.kernel.org, netdev@...r.kernel.org Cc: "Rafael J. Wysocki" <rafael@...nel.org>, Pavel Machek <pavel@....cz>, Jakub Kicinski <kuba@...nel.org>, Eric Dumazet <edumazet@...gle.com>, Stephen Hemminger <stephen@...workplumber.org>, linux-pm@...r.kernel.org, Christian Brauner <christian.brauner@...ntu.com> Subject: [PATCH net-next v2 10/10] net: fix sysfs permssions when device changes network namespace Now that we moved all the helpers in place and make use netdev_change_owner() to fixup the permissions when moving network devices between network namespaces. Signed-off-by: Christian Brauner <christian.brauner@...ntu.com> --- /* v2 */ unchanged --- net/core/dev.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/net/core/dev.c b/net/core/dev.c index a69e8bd7ed74..0f9c4684fcbd 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -10016,6 +10016,7 @@ EXPORT_SYMBOL(unregister_netdev); int dev_change_net_namespace(struct net_device *dev, struct net *net, const char *pat) { + struct net *net_old = dev_net(dev); int err, new_nsid, new_ifindex; ASSERT_RTNL(); @@ -10031,7 +10032,7 @@ int dev_change_net_namespace(struct net_device *dev, struct net *net, const char /* Get out if there is nothing todo */ err = 0; - if (net_eq(dev_net(dev), net)) + if (net_eq(net_old, net)) goto out; /* Pick the destination device name, and ensure @@ -10107,6 +10108,12 @@ int dev_change_net_namespace(struct net_device *dev, struct net *net, const char err = device_rename(&dev->dev, dev->name); WARN_ON(err); + /* Adapt owner in case owning user namespace of target network + * namespace is different from the original one. + */ + err = netdev_change_owner(dev, net_old, net); + WARN_ON(err); + /* Add the device back in the hashes */ list_netdevice(dev); -- 2.25.0
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