1 #ifndef __LINUX_NET_AFUNIX_H
2 #define __LINUX_NET_AFUNIX_H
4 #include <linux/socket.h>
6 #include <linux/mutex.h>
9 extern void unix_inflight(struct file *fp);
10 extern void unix_notinflight(struct file *fp);
11 extern void unix_gc(void);
13 #define UNIX_HASH_SIZE 256
15 extern struct hlist_head unix_socket_table[UNIX_HASH_SIZE + 1];
16 extern spinlock_t unix_table_lock;
18 extern atomic_t unix_tot_inflight;
20 static inline struct sock *first_unix_socket(int *i)
22 for (*i = 0; *i <= UNIX_HASH_SIZE; (*i)++) {
23 if (!hlist_empty(&unix_socket_table[*i]))
24 return __sk_head(&unix_socket_table[*i]);
29 static inline struct sock *next_unix_socket(int *i, struct sock *s)
31 struct sock *next = sk_next(s);
32 /* More in this chain? */
35 /* Look for next non-empty chain. */
36 for ((*i)++; *i <= UNIX_HASH_SIZE; (*i)++) {
37 if (!hlist_empty(&unix_socket_table[*i]))
38 return __sk_head(&unix_socket_table[*i]);
43 #define forall_unix_sockets(i, s) \
44 for (s = first_unix_socket(&(i)); s; s = next_unix_socket(&(i),(s)))
50 struct sockaddr_un name[0];
53 struct unix_skb_parms {
54 struct ucred creds; /* Skb credentials */
55 struct scm_fp_list *fp; /* Passed files */
58 #define UNIXCB(skb) (*(struct unix_skb_parms*)&((skb)->cb))
59 #define UNIXCREDS(skb) (&UNIXCB((skb)).creds)
61 #define unix_state_rlock(s) spin_lock(&unix_sk(s)->lock)
62 #define unix_state_runlock(s) spin_unlock(&unix_sk(s)->lock)
63 #define unix_state_wlock(s) spin_lock(&unix_sk(s)->lock)
64 #define unix_state_wunlock(s) spin_unlock(&unix_sk(s)->lock)
67 /* The AF_UNIX socket */
69 /* WARNING: sk has to be the first member */
71 struct unix_address *addr;
72 struct dentry *dentry;
74 struct mutex readlock;
80 wait_queue_head_t peer_wait;
82 #define unix_sk(__sk) ((struct unix_sock *)__sk)
85 extern int sysctl_unix_max_dgram_qlen;
86 extern void unix_sysctl_register(void);
87 extern void unix_sysctl_unregister(void);
89 static inline void unix_sysctl_register(void) {}
90 static inline void unix_sysctl_unregister(void) {}