Merge branch 'v6v7' into devel
[linux/fpc-iii.git] / include / net / af_unix.h
blob18e5c3f675804eb6fbc84bb4aa0781944807c260
1 #ifndef __LINUX_NET_AFUNIX_H
2 #define __LINUX_NET_AFUNIX_H
4 #include <linux/socket.h>
5 #include <linux/un.h>
6 #include <linux/mutex.h>
7 #include <net/sock.h>
9 extern void unix_inflight(struct file *fp);
10 extern void unix_notinflight(struct file *fp);
11 extern void unix_gc(void);
12 extern void wait_for_unix_gc(void);
13 extern struct sock *unix_get_socket(struct file *filp);
15 #define UNIX_HASH_SIZE 256
17 extern unsigned int unix_tot_inflight;
19 struct unix_address {
20 atomic_t refcnt;
21 int len;
22 unsigned hash;
23 struct sockaddr_un name[0];
26 struct unix_skb_parms {
27 struct pid *pid; /* Skb credentials */
28 const struct cred *cred;
29 struct scm_fp_list *fp; /* Passed files */
30 #ifdef CONFIG_SECURITY_NETWORK
31 u32 secid; /* Security ID */
32 #endif
35 #define UNIXCB(skb) (*(struct unix_skb_parms *)&((skb)->cb))
36 #define UNIXSID(skb) (&UNIXCB((skb)).secid)
38 #define unix_state_lock(s) spin_lock(&unix_sk(s)->lock)
39 #define unix_state_unlock(s) spin_unlock(&unix_sk(s)->lock)
40 #define unix_state_lock_nested(s) \
41 spin_lock_nested(&unix_sk(s)->lock, \
42 SINGLE_DEPTH_NESTING)
44 #ifdef __KERNEL__
45 /* The AF_UNIX socket */
46 struct unix_sock {
47 /* WARNING: sk has to be the first member */
48 struct sock sk;
49 struct unix_address *addr;
50 struct dentry *dentry;
51 struct vfsmount *mnt;
52 struct mutex readlock;
53 struct sock *peer;
54 struct sock *other;
55 struct list_head link;
56 atomic_long_t inflight;
57 spinlock_t lock;
58 unsigned int gc_candidate : 1;
59 unsigned int gc_maybe_cycle : 1;
60 unsigned char recursion_level;
61 struct socket_wq peer_wq;
63 #define unix_sk(__sk) ((struct unix_sock *)__sk)
65 #define peer_wait peer_wq.wait
67 #ifdef CONFIG_SYSCTL
68 extern int unix_sysctl_register(struct net *net);
69 extern void unix_sysctl_unregister(struct net *net);
70 #else
71 static inline int unix_sysctl_register(struct net *net) { return 0; }
72 static inline void unix_sysctl_unregister(struct net *net) {}
73 #endif
74 #endif
75 #endif