X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fnet%2Faf_unix.h;h=47c8228a3467c278b84c7bc27add0fc362cc2d6c;hb=refs%2Fheads%2Fvserver;hp=be877d75cfeb9d2ec88bc18589f3af38648fce1b;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git

diff --git a/include/net/af_unix.h b/include/net/af_unix.h
index be877d75c..47c8228a3 100644
--- a/include/net/af_unix.h
+++ b/include/net/af_unix.h
@@ -1,5 +1,12 @@
 #ifndef __LINUX_NET_AFUNIX_H
 #define __LINUX_NET_AFUNIX_H
+
+#include <linux/socket.h>
+#include <linux/un.h>
+#include <linux/mutex.h>
+#include <linux/vs_base.h>
+#include <net/sock.h>
+
 extern void unix_inflight(struct file *fp);
 extern void unix_notinflight(struct file *fp);
 extern void unix_gc(void);
@@ -7,13 +14,13 @@ extern void unix_gc(void);
 #define UNIX_HASH_SIZE	256
 
 extern struct hlist_head unix_socket_table[UNIX_HASH_SIZE + 1];
-extern rwlock_t unix_table_lock;
+extern spinlock_t unix_table_lock;
 
 extern atomic_t unix_tot_inflight;
 
-static inline struct sock *first_unix_socket(int *i)
+static inline struct sock *next_unix_socket_table(int *i)
 {
-	for (*i = 0; *i <= UNIX_HASH_SIZE; (*i)++) {
+	for ((*i)++; *i <= UNIX_HASH_SIZE; (*i)++) {
 		if (!hlist_empty(&unix_socket_table[*i]))
 			return __sk_head(&unix_socket_table[*i]);
 	}
@@ -22,42 +29,50 @@ static inline struct sock *first_unix_socket(int *i)
 
 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;
+	do {
+		if (s)
+			s = sk_next(s);
+		if (!s)
+			s = next_unix_socket_table(i);
+	} while (s && !nx_check(s->sk_nid, VS_WATCH_P|VS_IDENT));
+	return s;
+}
+
+static inline struct sock *first_unix_socket(int *i)
+{
+	*i = 0;
+	return next_unix_socket(i, NULL);
 }
 
 #define forall_unix_sockets(i, s) \
 	for (s = first_unix_socket(&(i)); s; s = next_unix_socket(&(i),(s)))
 
-struct unix_address
-{
+struct unix_address {
 	atomic_t	refcnt;
 	int		len;
 	unsigned	hash;
 	struct sockaddr_un name[0];
 };
 
-struct unix_skb_parms
-{
+struct unix_skb_parms {
 	struct ucred		creds;		/* Skb credentials	*/
 	struct scm_fp_list	*fp;		/* Passed files		*/
+#ifdef CONFIG_SECURITY_NETWORK
+	u32			secid;		/* Security ID		*/
+#endif
 };
 
 #define UNIXCB(skb) 	(*(struct unix_skb_parms*)&((skb)->cb))
 #define UNIXCREDS(skb)	(&UNIXCB((skb)).creds)
+#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_rlock(s)	spin_lock(&unix_sk(s)->lock)
+#define unix_state_runlock(s)	spin_unlock(&unix_sk(s)->lock)
+#define unix_state_wlock(s)	spin_lock(&unix_sk(s)->lock)
+#define unix_state_wlock_nested(s) \
+				spin_lock_nested(&unix_sk(s)->lock, \
+				SINGLE_DEPTH_NESTING)
+#define unix_state_wunlock(s)	spin_unlock(&unix_sk(s)->lock)
 
 #ifdef __KERNEL__
 /* The AF_UNIX socket */
@@ -67,13 +82,23 @@ struct unix_sock {
         struct unix_address     *addr;
         struct dentry		*dentry;
         struct vfsmount		*mnt;
-        struct semaphore        readsem;
+	struct mutex		readlock;
+        struct sock		*peer;
         struct sock		*other;
         struct sock		*gc_tree;
         atomic_t                inflight;
-        rwlock_t                lock;
+        spinlock_t		lock;
         wait_queue_head_t       peer_wait;
 };
 #define unix_sk(__sk) ((struct unix_sock *)__sk)
+
+#ifdef CONFIG_SYSCTL
+extern int sysctl_unix_max_dgram_qlen;
+extern void unix_sysctl_register(void);
+extern void unix_sysctl_unregister(void);
+#else
+static inline void unix_sysctl_register(void) {}
+static inline void unix_sysctl_unregister(void) {}
+#endif
 #endif
 #endif