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1da177e4 LT |
1 | #ifndef __LINUX_NET_AFUNIX_H |
2 | #define __LINUX_NET_AFUNIX_H | |
20380731 | 3 | |
20380731 ACM |
4 | #include <linux/socket.h> |
5 | #include <linux/un.h> | |
57b47a53 | 6 | #include <linux/mutex.h> |
20380731 ACM |
7 | #include <net/sock.h> |
8 | ||
1da177e4 LT |
9 | extern void unix_inflight(struct file *fp); |
10 | extern void unix_notinflight(struct file *fp); | |
11 | extern void unix_gc(void); | |
12 | ||
13 | #define UNIX_HASH_SIZE 256 | |
14 | ||
9305cfa4 | 15 | extern unsigned int unix_tot_inflight; |
1da177e4 | 16 | |
1da177e4 LT |
17 | struct unix_address { |
18 | atomic_t refcnt; | |
19 | int len; | |
20 | unsigned hash; | |
21 | struct sockaddr_un name[0]; | |
22 | }; | |
23 | ||
24 | struct unix_skb_parms { | |
25 | struct ucred creds; /* Skb credentials */ | |
26 | struct scm_fp_list *fp; /* Passed files */ | |
877ce7c1 | 27 | #ifdef CONFIG_SECURITY_NETWORK |
dc49c1f9 | 28 | u32 secid; /* Security ID */ |
877ce7c1 | 29 | #endif |
1da177e4 LT |
30 | }; |
31 | ||
32 | #define UNIXCB(skb) (*(struct unix_skb_parms*)&((skb)->cb)) | |
33 | #define UNIXCREDS(skb) (&UNIXCB((skb)).creds) | |
dc49c1f9 | 34 | #define UNIXSID(skb) (&UNIXCB((skb)).secid) |
1da177e4 | 35 | |
1c92b4e5 DM |
36 | #define unix_state_lock(s) spin_lock(&unix_sk(s)->lock) |
37 | #define unix_state_unlock(s) spin_unlock(&unix_sk(s)->lock) | |
38 | #define unix_state_lock_nested(s) \ | |
a09785a2 IM |
39 | spin_lock_nested(&unix_sk(s)->lock, \ |
40 | SINGLE_DEPTH_NESTING) | |
1da177e4 LT |
41 | |
42 | #ifdef __KERNEL__ | |
43 | /* The AF_UNIX socket */ | |
44 | struct unix_sock { | |
45 | /* WARNING: sk has to be the first member */ | |
46 | struct sock sk; | |
47 | struct unix_address *addr; | |
48 | struct dentry *dentry; | |
49 | struct vfsmount *mnt; | |
57b47a53 | 50 | struct mutex readlock; |
1da177e4 LT |
51 | struct sock *peer; |
52 | struct sock *other; | |
1fd05ba5 | 53 | struct list_head link; |
1da177e4 | 54 | atomic_t inflight; |
fd19f329 | 55 | spinlock_t lock; |
1fd05ba5 | 56 | unsigned int gc_candidate : 1; |
1da177e4 LT |
57 | wait_queue_head_t peer_wait; |
58 | }; | |
59 | #define unix_sk(__sk) ((struct unix_sock *)__sk) | |
20380731 ACM |
60 | |
61 | #ifdef CONFIG_SYSCTL | |
97577e38 PE |
62 | extern int unix_sysctl_register(struct net *net); |
63 | extern void unix_sysctl_unregister(struct net *net); | |
20380731 | 64 | #else |
97577e38 PE |
65 | static inline int unix_sysctl_register(struct net *net) { return 0; } |
66 | static inline void unix_sysctl_unregister(struct net *net) {} | |
20380731 | 67 | #endif |
1da177e4 LT |
68 | #endif |
69 | #endif |