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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_NET_AFUNIX_H
#define __LINUX_NET_AFUNIX_H
#include <linux/atomic.h>
#include <linux/mutex.h>
#include <linux/net.h>
#include <linux/path.h>
#include <linux/refcount.h>
#include <linux/spinlock.h>
#include <linux/wait.h>
#include <net/sock.h>
#include <uapi/linux/un.h>
#if IS_ENABLED(CONFIG_UNIX)
struct unix_sock *unix_get_socket(struct file *filp);
#else
static inline struct unix_sock *unix_get_socket(struct file *filp)
{
return NULL;
}
#endif
struct unix_address {
refcount_t refcnt;
int len;
struct sockaddr_un name[];
};
struct scm_stat {
atomic_t nr_fds;
unsigned long nr_unix_fds;
};
/* The AF_UNIX socket */
struct unix_sock {
/* WARNING: sk has to be the first member */
struct sock sk;
struct unix_address *addr;
struct path path;
struct mutex iolock, bindlock;
struct sock *peer;
struct sock *listener;
struct unix_vertex *vertex;
spinlock_t lock;
struct socket_wq peer_wq;
#define peer_wait peer_wq.wait
wait_queue_entry_t peer_wake;
struct scm_stat scm_stat;
#if IS_ENABLED(CONFIG_AF_UNIX_OOB)
struct sk_buff *oob_skb;
#endif
};
#define unix_sk(ptr) container_of_const(ptr, struct unix_sock, sk)
#define unix_peer(sk) (unix_sk(sk)->peer)
#define unix_state_lock(s) spin_lock(&unix_sk(s)->lock)
#define unix_state_unlock(s) spin_unlock(&unix_sk(s)->lock)
#endif
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