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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); | |
5f23b734 | 12 | extern void wait_for_unix_gc(void); |
1da177e4 LT |
13 | |
14 | #define UNIX_HASH_SIZE 256 | |
15 | ||
9305cfa4 | 16 | extern unsigned int unix_tot_inflight; |
1da177e4 | 17 | |
1da177e4 LT |
18 | struct unix_address { |
19 | atomic_t refcnt; | |
20 | int len; | |
21 | unsigned hash; | |
22 | struct sockaddr_un name[0]; | |
23 | }; | |
24 | ||
25 | struct unix_skb_parms { | |
26 | struct ucred creds; /* Skb credentials */ | |
27 | struct scm_fp_list *fp; /* Passed files */ | |
877ce7c1 | 28 | #ifdef CONFIG_SECURITY_NETWORK |
dc49c1f9 | 29 | u32 secid; /* Security ID */ |
877ce7c1 | 30 | #endif |
1da177e4 LT |
31 | }; |
32 | ||
33 | #define UNIXCB(skb) (*(struct unix_skb_parms*)&((skb)->cb)) | |
34 | #define UNIXCREDS(skb) (&UNIXCB((skb)).creds) | |
dc49c1f9 | 35 | #define UNIXSID(skb) (&UNIXCB((skb)).secid) |
1da177e4 | 36 | |
1c92b4e5 DM |
37 | #define unix_state_lock(s) spin_lock(&unix_sk(s)->lock) |
38 | #define unix_state_unlock(s) spin_unlock(&unix_sk(s)->lock) | |
39 | #define unix_state_lock_nested(s) \ | |
a09785a2 IM |
40 | spin_lock_nested(&unix_sk(s)->lock, \ |
41 | SINGLE_DEPTH_NESTING) | |
1da177e4 LT |
42 | |
43 | #ifdef __KERNEL__ | |
44 | /* The AF_UNIX socket */ | |
45 | struct unix_sock { | |
46 | /* WARNING: sk has to be the first member */ | |
47 | struct sock sk; | |
48 | struct unix_address *addr; | |
49 | struct dentry *dentry; | |
50 | struct vfsmount *mnt; | |
57b47a53 | 51 | struct mutex readlock; |
1da177e4 LT |
52 | struct sock *peer; |
53 | struct sock *other; | |
1fd05ba5 | 54 | struct list_head link; |
516e0cc5 | 55 | atomic_long_t inflight; |
fd19f329 | 56 | spinlock_t lock; |
1fd05ba5 | 57 | unsigned int gc_candidate : 1; |
6209344f | 58 | unsigned int gc_maybe_cycle : 1; |
1da177e4 LT |
59 | wait_queue_head_t peer_wait; |
60 | }; | |
61 | #define unix_sk(__sk) ((struct unix_sock *)__sk) | |
20380731 ACM |
62 | |
63 | #ifdef CONFIG_SYSCTL | |
97577e38 PE |
64 | extern int unix_sysctl_register(struct net *net); |
65 | extern void unix_sysctl_unregister(struct net *net); | |
20380731 | 66 | #else |
97577e38 PE |
67 | static inline int unix_sysctl_register(struct net *net) { return 0; } |
68 | static inline void unix_sysctl_unregister(struct net *net) {} | |
20380731 | 69 | #endif |
1da177e4 LT |
70 | #endif |
71 | #endif |