--- include/net/af_unix.h

+++ include/net/af_unix.h

@@ -10,6 +10,7 @@ extern void unix_inflight(struct file *f

extern void unix_notinflight(struct file *fp);

extern void unix_gc(void);

extern void wait_for_unix_gc(void);

+extern struct sock *unix_get_socket(struct file *filp);

#define UNIX_HASH_SIZE 256

@@ -56,6 +57,7 @@ struct unix_sock {

spinlock_t lock;

unsigned int gc_candidate : 1;

unsigned int gc_maybe_cycle : 1;

+ unsigned char recursion_level;

wait_queue_head_t peer_wait;

};

#define unix_sk(__sk) ((struct unix_sock *)__sk)