diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c index 15ea216a67ce..649bf60a9440 100644 --- a/lib/kobject_uevent.c +++ b/lib/kobject_uevent.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include #include @@ -296,6 +297,38 @@ static void cleanup_uevent_env(struct subprocess_info *info) } #endif +#ifdef CONFIG_NET +static struct sk_buff *alloc_uevent_skb(struct kobj_uevent_env *env, + const char *action_string, + const char *devpath) +{ + struct netlink_skb_parms *parms; + struct sk_buff *skb = NULL; + char *scratch; + size_t len; + + /* allocate message with maximum possible size */ + len = strlen(action_string) + strlen(devpath) + 2; + skb = alloc_skb(len + env->buflen, GFP_KERNEL); + if (!skb) + return NULL; + + /* add header */ + scratch = skb_put(skb, len); + sprintf(scratch, "%s@%s", action_string, devpath); + + skb_put_data(skb, env->buf, env->buflen); + + parms = &NETLINK_CB(skb); + parms->creds.uid = GLOBAL_ROOT_UID; + parms->creds.gid = GLOBAL_ROOT_GID; + parms->dst_group = 1; + parms->portid = 0; + + return skb; +} +#endif + static int kobject_uevent_net_broadcast(struct kobject *kobj, struct kobj_uevent_env *env, const char *action_string, @@ -314,22 +347,10 @@ static int kobject_uevent_net_broadcast(struct kobject *kobj, continue; if (!skb) { - /* allocate message with the maximum possible size */ - size_t len = strlen(action_string) + strlen(devpath) + 2; - char *scratch; - retval = -ENOMEM; - skb = alloc_skb(len + env->buflen, GFP_KERNEL); + skb = alloc_uevent_skb(env, action_string, devpath); if (!skb) continue; - - /* add header */ - scratch = skb_put(skb, len); - sprintf(scratch, "%s@%s", action_string, devpath); - - skb_put_data(skb, env->buf, env->buflen); - - NETLINK_CB(skb).dst_group = 1; } retval = netlink_broadcast_filtered(uevent_sock, skb_get(skb),