target/linux/generic/pending-4.4/911-kobject_add_broadcast_uevent.patch

   1 --- a/include/linux/kobject.h
   2 +++ b/include/linux/kobject.h
   3 @@ -32,6 +32,8 @@
   4  #define UEVENT_NUM_ENVP                        32      /* number of env pointers */
   5  #define UEVENT_BUFFER_SIZE             2048    /* buffer for the variables */
   6
   7 +struct sk_buff;
   8 +
   9  #ifdef CONFIG_UEVENT_HELPER
  10  /* path to the userspace helper executed on an event */
  11  extern char uevent_helper[];
  12 @@ -222,4 +224,7 @@ int add_uevent_var(struct kobj_uevent_en
  13  int kobject_action_type(const char *buf, size_t count,
  14                         enum kobject_action *type);
  15
  16 +int broadcast_uevent(struct sk_buff *skb, __u32 pid, __u32 group,
  17 +                    gfp_t allocation);
  18 +
  19  #endif /* _KOBJECT_H_ */
  20 --- a/lib/kobject_uevent.c
  21 +++ b/lib/kobject_uevent.c
  22 @@ -423,6 +423,43 @@ int add_uevent_var(struct kobj_uevent_en
  23  EXPORT_SYMBOL_GPL(add_uevent_var);
  24
  25  #if defined(CONFIG_NET)
  26 +int broadcast_uevent(struct sk_buff *skb, __u32 pid, __u32 group,
  27 +                    gfp_t allocation)
  28 +{
  29 +       struct uevent_sock *ue_sk;
  30 +       int err = 0;
  31 +
  32 +       /* send netlink message */
  33 +       mutex_lock(&uevent_sock_mutex);
  34 +       list_for_each_entry(ue_sk, &uevent_sock_list, list) {
  35 +               struct sock *uevent_sock = ue_sk->sk;
  36 +               struct sk_buff *skb2;
  37 +
  38 +               skb2 = skb_clone(skb, allocation);
  39 +               if (!skb2)
  40 +                       break;
  41 +
  42 +               err = netlink_broadcast(uevent_sock, skb2, pid, group,
  43 +                                       allocation);
  44 +               if (err)
  45 +                       break;
  46 +       }
  47 +       mutex_unlock(&uevent_sock_mutex);
  48 +
  49 +       kfree_skb(skb);
  50 +       return err;
  51 +}
  52 +#else
  53 +int broadcast_uevent(struct sk_buff *skb, __u32 pid, __u32 group,
  54 +                    gfp_t allocation)
  55 +{
  56 +       kfree_skb(skb);
  57 +       return 0;
  58 +}
  59 +#endif
  60 +EXPORT_SYMBOL_GPL(broadcast_uevent);
  61 +
  62 +#if defined(CONFIG_NET)
  63  static int uevent_net_init(struct net *net)
  64  {
  65         struct uevent_sock *ue_sk;