Commit | Line | Data |
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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); |
25888e30 | 13 | extern struct sock *unix_get_socket(struct file *filp); |
fa7ff56f | 14 | extern struct sock *unix_peer_get(struct sock *); |
1da177e4 LT |
15 | |
16 | #define UNIX_HASH_SIZE 256 | |
7123aaa3 | 17 | #define UNIX_HASH_BITS 8 |
1da177e4 | 18 | |
9305cfa4 | 19 | extern unsigned int unix_tot_inflight; |
fa7ff56f | 20 | extern spinlock_t unix_table_lock; |
7123aaa3 | 21 | extern struct hlist_head unix_socket_table[2 * UNIX_HASH_SIZE]; |
1da177e4 | 22 | |
1da177e4 LT |
23 | struct unix_address { |
24 | atomic_t refcnt; | |
25 | int len; | |
95c96174 | 26 | unsigned int hash; |
1da177e4 LT |
27 | struct sockaddr_un name[0]; |
28 | }; | |
29 | ||
30 | struct unix_skb_parms { | |
7361c36c EB |
31 | struct pid *pid; /* Skb credentials */ |
32 | const struct cred *cred; | |
1da177e4 | 33 | struct scm_fp_list *fp; /* Passed files */ |
877ce7c1 | 34 | #ifdef CONFIG_SECURITY_NETWORK |
dc49c1f9 | 35 | u32 secid; /* Security ID */ |
877ce7c1 | 36 | #endif |
1da177e4 LT |
37 | }; |
38 | ||
43815482 | 39 | #define UNIXCB(skb) (*(struct unix_skb_parms *)&((skb)->cb)) |
dc49c1f9 | 40 | #define UNIXSID(skb) (&UNIXCB((skb)).secid) |
1da177e4 | 41 | |
1c92b4e5 DM |
42 | #define unix_state_lock(s) spin_lock(&unix_sk(s)->lock) |
43 | #define unix_state_unlock(s) spin_unlock(&unix_sk(s)->lock) | |
44 | #define unix_state_lock_nested(s) \ | |
a09785a2 IM |
45 | spin_lock_nested(&unix_sk(s)->lock, \ |
46 | SINGLE_DEPTH_NESTING) | |
1da177e4 | 47 | |
1da177e4 LT |
48 | /* The AF_UNIX socket */ |
49 | struct unix_sock { | |
50 | /* WARNING: sk has to be the first member */ | |
51 | struct sock sk; | |
43815482 | 52 | struct unix_address *addr; |
40ffe67d | 53 | struct path path; |
57b47a53 | 54 | struct mutex readlock; |
43815482 ED |
55 | struct sock *peer; |
56 | struct sock *other; | |
1fd05ba5 | 57 | struct list_head link; |
43815482 ED |
58 | atomic_long_t inflight; |
59 | spinlock_t lock; | |
1fd05ba5 | 60 | unsigned int gc_candidate : 1; |
6209344f | 61 | unsigned int gc_maybe_cycle : 1; |
25888e30 | 62 | unsigned char recursion_level; |
43815482 | 63 | struct socket_wq peer_wq; |
1da177e4 LT |
64 | }; |
65 | #define unix_sk(__sk) ((struct unix_sock *)__sk) | |
20380731 | 66 | |
43815482 ED |
67 | #define peer_wait peer_wq.wait |
68 | ||
885ee74d PE |
69 | long unix_inq_len(struct sock *sk); |
70 | long unix_outq_len(struct sock *sk); | |
71 | ||
20380731 | 72 | #ifdef CONFIG_SYSCTL |
97577e38 PE |
73 | extern int unix_sysctl_register(struct net *net); |
74 | extern void unix_sysctl_unregister(struct net *net); | |
20380731 | 75 | #else |
97577e38 PE |
76 | static inline int unix_sysctl_register(struct net *net) { return 0; } |
77 | static inline void unix_sysctl_unregister(struct net *net) {} | |
20380731 | 78 | #endif |
1da177e4 | 79 | #endif |