1 files changed, 47 insertions, 59 deletions

diff --git a/include/net/af_unix.h b/include/net/af_unix.h
index b5d785ab4a0..a175ba4a7ad 100644
--- a/include/net/af_unix.h
+++ b/include/net/af_unix.h
@@ -1,93 +1,81 @@
 #ifndef __LINUX_NET_AFUNIX_H
 #define __LINUX_NET_AFUNIX_H
 
-#include <linux/config.h>
 #include <linux/socket.h>
 #include <linux/un.h>
+#include <linux/mutex.h>
 #include <net/sock.h>
 
-extern void unix_inflight(struct file *fp);
-extern void unix_notinflight(struct file *fp);
-extern void unix_gc(void);
+void unix_inflight(struct file *fp);
+void unix_notinflight(struct file *fp);
+void unix_gc(void);
+void wait_for_unix_gc(void);
+struct sock *unix_get_socket(struct file *filp);
+struct sock *unix_peer_get(struct sock *);
 
 #define UNIX_HASH_SIZE	256
+#define UNIX_HASH_BITS	8
 
-extern struct hlist_head unix_socket_table[UNIX_HASH_SIZE + 1];
-extern rwlock_t unix_table_lock;
-
-extern atomic_t unix_tot_inflight;
-
-static inline struct sock *first_unix_socket(int *i)
-{
-	for (*i = 0; *i <= UNIX_HASH_SIZE; (*i)++) {
-		if (!hlist_empty(&unix_socket_table[*i]))
-			return __sk_head(&unix_socket_table[*i]);
-	}
-	return NULL;
-}
-
-static inline struct sock *next_unix_socket(int *i, struct sock *s)
-{
-	struct sock *next = sk_next(s);
-	/* More in this chain? */
-	if (next)
-		return next;
-	/* Look for next non-empty chain. */
-	for ((*i)++; *i <= UNIX_HASH_SIZE; (*i)++) {
-		if (!hlist_empty(&unix_socket_table[*i]))
-			return __sk_head(&unix_socket_table[*i]);
-	}
-	return NULL;
-}
-
-#define forall_unix_sockets(i, s) \
-	for (s = first_unix_socket(&(i)); s; s = next_unix_socket(&(i),(s)))
+extern unsigned int unix_tot_inflight;
+extern spinlock_t unix_table_lock;
+extern struct hlist_head unix_socket_table[2 * UNIX_HASH_SIZE];
 
 struct unix_address {
 	atomic_t	refcnt;
 	int		len;
-	unsigned	hash;
+	unsigned int	hash;
 	struct sockaddr_un name[0];
 };
 
 struct unix_skb_parms {
-	struct ucred		creds;		/* Skb credentials	*/
+	struct pid		*pid;		/* Skb credentials	*/
+	kuid_t			uid;
+	kgid_t			gid;
 	struct scm_fp_list	*fp;		/* Passed files		*/
+#ifdef CONFIG_SECURITY_NETWORK
+	u32			secid;		/* Security ID		*/
+#endif
+	u32			consumed;
 };
 
-#define UNIXCB(skb) 	(*(struct unix_skb_parms*)&((skb)->cb))
-#define UNIXCREDS(skb)	(&UNIXCB((skb)).creds)
+#define UNIXCB(skb) 	(*(struct unix_skb_parms *)&((skb)->cb))
+#define UNIXSID(skb)	(&UNIXCB((skb)).secid)
 
-#define unix_state_rlock(s)	read_lock(&unix_sk(s)->lock)
-#define unix_state_runlock(s)	read_unlock(&unix_sk(s)->lock)
-#define unix_state_wlock(s)	write_lock(&unix_sk(s)->lock)
-#define unix_state_wunlock(s)	write_unlock(&unix_sk(s)->lock)
+#define unix_state_lock(s)	spin_lock(&unix_sk(s)->lock)
+#define unix_state_unlock(s)	spin_unlock(&unix_sk(s)->lock)
+#define unix_state_lock_nested(s) \
+				spin_lock_nested(&unix_sk(s)->lock, \
+				SINGLE_DEPTH_NESTING)
 
-#ifdef __KERNEL__
 /* The AF_UNIX socket */
 struct unix_sock {
 	/* WARNING: sk has to be the first member */
 	struct sock		sk;
-        struct unix_address     *addr;
-        struct dentry		*dentry;
-        struct vfsmount		*mnt;
-        struct semaphore        readsem;
-        struct sock		*peer;
-        struct sock		*other;
-        struct sock		*gc_tree;
-        atomic_t                inflight;
-        rwlock_t                lock;
-        wait_queue_head_t       peer_wait;
+	struct unix_address     *addr;
+	struct path		path;
+	struct mutex		readlock;
+	struct sock		*peer;
+	struct list_head	link;
+	atomic_long_t		inflight;
+	spinlock_t		lock;
+	unsigned char		recursion_level;
+	unsigned long		gc_flags;
+#define UNIX_GC_CANDIDATE	0
+#define UNIX_GC_MAYBE_CYCLE	1
+	struct socket_wq	peer_wq;
 };
 #define unix_sk(__sk) ((struct unix_sock *)__sk)
 
+#define peer_wait peer_wq.wait
+
+long unix_inq_len(struct sock *sk);
+long unix_outq_len(struct sock *sk);
+
 #ifdef CONFIG_SYSCTL
-extern int sysctl_unix_max_dgram_qlen;
-extern void unix_sysctl_register(void);
-extern void unix_sysctl_unregister(void);
+int unix_sysctl_register(struct net *net);
+void unix_sysctl_unregister(struct net *net);
 #else
-static inline void unix_sysctl_register(void) {}
-static inline void unix_sysctl_unregister(void) {}
-#endif
+static inline int unix_sysctl_register(struct net *net) { return 0; }
+static inline void unix_sysctl_unregister(struct net *net) {}
 #endif
 #endif