tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
fork
Configure Feed
Select the types of activity you want to include in your feed.
1#ifndef __LINUX_NET_AFUNIX_H
2#define __LINUX_NET_AFUNIX_H
3
4#include <linux/socket.h>
5#include <linux/un.h>
6#include <linux/mutex.h>
7#include <net/sock.h>
8
9extern void unix_inflight(struct file *fp);
10extern void unix_notinflight(struct file *fp);
11extern void unix_gc(void);
12extern void wait_for_unix_gc(void);
13extern struct sock *unix_get_socket(struct file *filp);
14extern struct sock *unix_peer_get(struct sock *);
15
16#define UNIX_HASH_SIZE 256
17#define UNIX_HASH_BITS 8
18
19extern unsigned int unix_tot_inflight;
20extern spinlock_t unix_table_lock;
21extern struct hlist_head unix_socket_table[2 * UNIX_HASH_SIZE];
22
23struct unix_address {
24 atomic_t refcnt;
25 int len;
26 unsigned int hash;
27 struct sockaddr_un name[0];
28};
29
30struct unix_skb_parms {
31 struct pid *pid; /* Skb credentials */
32 const struct cred *cred;
33 struct scm_fp_list *fp; /* Passed files */
34#ifdef CONFIG_SECURITY_NETWORK
35 u32 secid; /* Security ID */
36#endif
37};
38
39#define UNIXCB(skb) (*(struct unix_skb_parms *)&((skb)->cb))
40#define UNIXSID(skb) (&UNIXCB((skb)).secid)
41
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) \
45 spin_lock_nested(&unix_sk(s)->lock, \
46 SINGLE_DEPTH_NESTING)
47
48/* The AF_UNIX socket */
49struct unix_sock {
50 /* WARNING: sk has to be the first member */
51 struct sock sk;
52 struct unix_address *addr;
53 struct path path;
54 struct mutex readlock;
55 struct sock *peer;
56 struct list_head link;
57 atomic_long_t inflight;
58 spinlock_t lock;
59 unsigned int gc_candidate : 1;
60 unsigned int gc_maybe_cycle : 1;
61 unsigned char recursion_level;
62 struct socket_wq peer_wq;
63};
64#define unix_sk(__sk) ((struct unix_sock *)__sk)
65
66#define peer_wait peer_wq.wait
67
68long unix_inq_len(struct sock *sk);
69long unix_outq_len(struct sock *sk);
70
71#ifdef CONFIG_SYSCTL
72extern int unix_sysctl_register(struct net *net);
73extern void unix_sysctl_unregister(struct net *net);
74#else
75static inline int unix_sysctl_register(struct net *net) { return 0; }
76static inline void unix_sysctl_unregister(struct net *net) {}
77#endif
78#endif