generic: introduce broadcast_uevent function

[openwrt.git] / target / linux / generic / patches-2.6.35 / 223-kobject-add-broadcast_uevent.patch

diff --git a/target/linux/generic/patches-2.6.35/223-kobject-add-broadcast_uevent.patch b/target/linux/generic/patches-2.6.35/223-kobject-add-broadcast_uevent.patch
new file mode 100644 (file)
index 0000000..c09e13e
--- /dev/null
+++ b/target/linux/generic/patches-2.6.35/223-kobject-add-broadcast_uevent.patch
@@ -0,0 +1,85 @@
+--- a/include/linux/kobject.h
++++ b/include/linux/kobject.h
+@@ -30,6 +30,8 @@
+ #define UEVENT_NUM_ENVP                       32      /* number of env pointers */
+ #define UEVENT_BUFFER_SIZE            2048    /* buffer for the variables */
+ 
++struct sk_buff;
++
+ /* path to the userspace helper executed on an event */
+ extern char uevent_helper[];
+ 
+@@ -246,6 +248,10 @@ int add_uevent_var(struct kobj_uevent_en
+ 
+ int kobject_action_type(const char *buf, size_t count,
+                       enum kobject_action *type);
++
++int broadcast_uevent(struct sk_buff *skb, __u32 pid, __u32 group,
++                   gfp_t allocation);
++
+ #else
+ static inline int kobject_uevent(struct kobject *kobj,
+                                enum kobject_action action)
+@@ -262,6 +268,16 @@ static inline int add_uevent_var(struct 
+ static inline int kobject_action_type(const char *buf, size_t count,
+                                     enum kobject_action *type)
+ { return -EINVAL; }
++
++void kfree_skb(struct sk_buff *);
++
++static inline int broadcast_uevent(struct sk_buff *skb, __u32 pid, __u32 group,
++                                 gfp_t allocation)
++{
++      kfree_skb(skb);
++      return 0;
++}
++
+ #endif
+ 
+ #endif /* _KOBJECT_H_ */
+--- a/lib/kobject_uevent.c
++++ b/lib/kobject_uevent.c
+@@ -377,6 +377,43 @@ int add_uevent_var(struct kobj_uevent_en
+ EXPORT_SYMBOL_GPL(add_uevent_var);
+ 
+ #if defined(CONFIG_NET)
++int broadcast_uevent(struct sk_buff *skb, __u32 pid, __u32 group,
++                   gfp_t allocation)
++{
++      struct uevent_sock *ue_sk;
++      int err = 0;
++
++      /* send netlink message */
++      mutex_lock(&uevent_sock_mutex);
++      list_for_each_entry(ue_sk, &uevent_sock_list, list) {
++              struct sock *uevent_sock = ue_sk->sk;
++              struct sk_buff *skb2;
++
++              skb2 = skb_clone(skb, allocation);
++              if (!skb2)
++                      break;
++
++              err = netlink_broadcast(uevent_sock, skb2, pid, group,
++                                      allocation);
++              if (err)
++                      break;
++      }
++      mutex_unlock(&uevent_sock_mutex);
++
++      kfree_skb(skb);
++      return err;
++}
++#else
++int broadcast_uevent(struct sk_buff *skb, __u32 pid, __u32 group,
++                   gfp_t allocation)
++{
++      kfree_skb(skb);
++      return 0;
++}
++#endif
++EXPORT_SYMBOL_GPL(broadcast_uevent);
++
++#if defined(CONFIG_NET)
+ static int uevent_net_init(struct net *net)
+ {
+       struct uevent_sock *ue_sk;