diff options
| author | Eric W. Biederman | 2010-05-04 17:36:48 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2010-05-21 09:37:33 -0700 |
| commit | 417daa1e8f893fbac88fd395340ba7779fd3926c (patch) | |
| tree | b712bd9f19a07f648df2e420e862684bde3a8a32 /lib | |
| parent | 5f71a29629b4717445f8b7f5fb8f50c2d262b68e (diff) | |
hotplug: netns aware uevent_helper
It only makes sense for uevent_helper to get events
in the intial namespaces. It's invocation is not
per namespace and it is not clear how we could make
it's invocation namespace aware.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/kobject_uevent.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c index 239c8e83fc28..59c15511d58a 100644 --- a/lib/kobject_uevent.c +++ b/lib/kobject_uevent.c @@ -19,7 +19,7 @@ #include <linux/kobject.h> #include <linux/module.h> #include <linux/slab.h> - +#include <linux/user_namespace.h> #include <linux/socket.h> #include <linux/skbuff.h> #include <linux/netlink.h> @@ -99,6 +99,21 @@ static int kobj_bcast_filter(struct sock *dsk, struct sk_buff *skb, void *data) return 0; } +static int kobj_usermode_filter(struct kobject *kobj) +{ + const struct kobj_ns_type_operations *ops; + + ops = kobj_ns_ops(kobj); + if (ops) { + const void *init_ns, *ns; + ns = kobj->ktype->namespace(kobj); + init_ns = ops->initial_ns(); + return ns != init_ns; + } + + return 0; +} + /** * kobject_uevent_env - send an uevent with environmental data * @@ -274,7 +289,7 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, #endif /* call uevent_helper, usually only enabled during early boot */ - if (uevent_helper[0]) { + if (uevent_helper[0] && !kobj_usermode_filter(kobj)) { char *argv [3]; argv [0] = uevent_helper; |