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 | ||
b60a8280 JP |
9 | void unix_inflight(struct file *fp); |
10 | void unix_notinflight(struct file *fp); | |
11 | void unix_gc(void); | |
12 | void wait_for_unix_gc(void); | |
13 | struct sock *unix_get_socket(struct file *filp); | |
14 | 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 | 31 | struct pid *pid; /* Skb credentials */ |
6b0ee8c0 EB |
32 | kuid_t uid; |
33 | kgid_t gid; | |
1da177e4 | 34 | struct scm_fp_list *fp; /* Passed files */ |
877ce7c1 | 35 | #ifdef CONFIG_SECURITY_NETWORK |
dc49c1f9 | 36 | u32 secid; /* Security ID */ |
877ce7c1 | 37 | #endif |
e370a723 | 38 | u32 consumed; |
1da177e4 LT |
39 | }; |
40 | ||
43815482 | 41 | #define UNIXCB(skb) (*(struct unix_skb_parms *)&((skb)->cb)) |
dc49c1f9 | 42 | #define UNIXSID(skb) (&UNIXCB((skb)).secid) |
1da177e4 | 43 | |
1c92b4e5 DM |
44 | #define unix_state_lock(s) spin_lock(&unix_sk(s)->lock) |
45 | #define unix_state_unlock(s) spin_unlock(&unix_sk(s)->lock) | |
46 | #define unix_state_lock_nested(s) \ | |
a09785a2 IM |
47 | spin_lock_nested(&unix_sk(s)->lock, \ |
48 | SINGLE_DEPTH_NESTING) | |
1da177e4 | 49 | |
1da177e4 LT |
50 | /* The AF_UNIX socket */ |
51 | struct unix_sock { | |
52 | /* WARNING: sk has to be the first member */ | |
53 | struct sock sk; | |
43815482 | 54 | struct unix_address *addr; |
40ffe67d | 55 | struct path path; |
57b47a53 | 56 | struct mutex readlock; |
43815482 | 57 | struct sock *peer; |
1fd05ba5 | 58 | struct list_head link; |
43815482 ED |
59 | atomic_long_t inflight; |
60 | spinlock_t lock; | |
25888e30 | 61 | unsigned char recursion_level; |
60bc851a ED |
62 | unsigned long gc_flags; |
63 | #define UNIX_GC_CANDIDATE 0 | |
64 | #define UNIX_GC_MAYBE_CYCLE 1 | |
43815482 | 65 | struct socket_wq peer_wq; |
1da177e4 LT |
66 | }; |
67 | #define unix_sk(__sk) ((struct unix_sock *)__sk) | |
20380731 | 68 | |
43815482 ED |
69 | #define peer_wait peer_wq.wait |
70 | ||
885ee74d PE |
71 | long unix_inq_len(struct sock *sk); |
72 | long unix_outq_len(struct sock *sk); | |
73 | ||
20380731 | 74 | #ifdef CONFIG_SYSCTL |
b60a8280 JP |
75 | int unix_sysctl_register(struct net *net); |
76 | void unix_sysctl_unregister(struct net *net); | |
20380731 | 77 | #else |
97577e38 PE |
78 | static inline int unix_sysctl_register(struct net *net) { return 0; } |
79 | static inline void unix_sysctl_unregister(struct net *net) {} | |
20380731 | 80 | #endif |
1da177e4 | 81 | #endif |