1 #ifndef __LINUX_NET_AFUNIX_H
2 #define __LINUX_NET_AFUNIX_H
4 #include <linux/socket.h>
6 #include <linux/mutex.h>
7 #include <linux/vs_base.h>
10 extern void unix_inflight(struct file *fp);
11 extern void unix_notinflight(struct file *fp);
12 extern void unix_gc(void);
14 #define UNIX_HASH_SIZE 256
16 extern struct hlist_head unix_socket_table[UNIX_HASH_SIZE + 1];
17 extern spinlock_t unix_table_lock;
19 extern atomic_t unix_tot_inflight;
21 static inline struct sock *next_unix_socket_table(int *i)
23 for ((*i)++; *i <= UNIX_HASH_SIZE; (*i)++) {
24 if (!hlist_empty(&unix_socket_table[*i]))
25 return __sk_head(&unix_socket_table[*i]);
30 static inline struct sock *next_unix_socket(int *i, struct sock *s)
36 s = next_unix_socket_table(i);
37 } while (s && !nx_check(s->sk_nid, VS_WATCH_P|VS_IDENT));
41 static inline struct sock *first_unix_socket(int *i)
44 return next_unix_socket(i, NULL);
47 #define forall_unix_sockets(i, s) \
48 for (s = first_unix_socket(&(i)); s; s = next_unix_socket(&(i),(s)))
54 struct sockaddr_un name[0];
57 struct unix_skb_parms {
58 struct ucred creds; /* Skb credentials */
59 struct scm_fp_list *fp; /* Passed files */
60 #ifdef CONFIG_SECURITY_NETWORK
61 u32 secid; /* Security ID */
65 #define UNIXCB(skb) (*(struct unix_skb_parms*)&((skb)->cb))
66 #define UNIXCREDS(skb) (&UNIXCB((skb)).creds)
67 #define UNIXSID(skb) (&UNIXCB((skb)).secid)
69 #define unix_state_rlock(s) spin_lock(&unix_sk(s)->lock)
70 #define unix_state_runlock(s) spin_unlock(&unix_sk(s)->lock)
71 #define unix_state_wlock(s) spin_lock(&unix_sk(s)->lock)
72 #define unix_state_wlock_nested(s) \
73 spin_lock_nested(&unix_sk(s)->lock, \
75 #define unix_state_wunlock(s) spin_unlock(&unix_sk(s)->lock)
78 /* The AF_UNIX socket */
80 /* WARNING: sk has to be the first member */
82 struct unix_address *addr;
83 struct dentry *dentry;
85 struct mutex readlock;
91 wait_queue_head_t peer_wait;
93 #define unix_sk(__sk) ((struct unix_sock *)__sk)
96 extern int sysctl_unix_max_dgram_qlen;
97 extern void unix_sysctl_register(void);
98 extern void unix_sysctl_unregister(void);
100 static inline void unix_sysctl_register(void) {}
101 static inline void unix_sysctl_unregister(void) {}