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 *next_unix_socket_table(int *i)
22 for ((*i)++; *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)
35 s = next_unix_socket_table(i);
36 } while (s && !vx_check(s->sk_xid, VX_IDENT|VX_WATCH));
40 static inline struct sock *first_unix_socket(int *i)
43 return next_unix_socket(i, NULL);
46 #define forall_unix_sockets(i, s) \
47 for (s = first_unix_socket(&(i)); s; s = next_unix_socket(&(i),(s)))
53 struct sockaddr_un name[0];
56 struct unix_skb_parms {
57 struct ucred creds; /* Skb credentials */
58 struct scm_fp_list *fp; /* Passed files */
59 #ifdef CONFIG_SECURITY_NETWORK
60 u32 secid; /* Security ID */
64 #define UNIXCB(skb) (*(struct unix_skb_parms*)&((skb)->cb))
65 #define UNIXCREDS(skb) (&UNIXCB((skb)).creds)
66 #define UNIXSID(skb) (&UNIXCB((skb)).secid)
68 #define unix_state_rlock(s) spin_lock(&unix_sk(s)->lock)
69 #define unix_state_runlock(s) spin_unlock(&unix_sk(s)->lock)
70 #define unix_state_wlock(s) spin_lock(&unix_sk(s)->lock)
71 #define unix_state_wlock_nested(s) \
72 spin_lock_nested(&unix_sk(s)->lock, \
74 #define unix_state_wunlock(s) spin_unlock(&unix_sk(s)->lock)
77 /* The AF_UNIX socket */
79 /* WARNING: sk has to be the first member */
81 struct unix_address *addr;
82 struct dentry *dentry;
84 struct mutex readlock;
90 wait_queue_head_t peer_wait;
92 #define unix_sk(__sk) ((struct unix_sock *)__sk)
95 extern int sysctl_unix_max_dgram_qlen;
96 extern void unix_sysctl_register(void);
97 extern void unix_sysctl_unregister(void);
99 static inline void unix_sysctl_register(void) {}
100 static inline void unix_sysctl_unregister(void) {}