184 static inline int unix_our_peer(struct sock *sk, struct sock *osk)  in unix_our_peer()
189 static inline int unix_may_send(struct sock *sk, struct sock *osk)  in unix_may_send()
194 static inline int unix_recvq_full(struct sock const *sk)  in unix_recvq_full()
199 struct sock *unix_peer_get(struct sock *s)  in unix_peer_get()
201 	struct sock *peer;  in unix_peer_get()
248 static void __unix_remove_socket(struct sock *sk)  in __unix_remove_socket()
253 static void __unix_insert_socket(struct hlist_head *list, struct sock *sk)  in __unix_insert_socket()
259 static inline void unix_remove_socket(struct sock *sk)  in unix_remove_socket()
266 static inline void unix_insert_socket(struct hlist_head *list, struct sock *sk)  in unix_insert_socket()
273 static struct sock *__unix_find_socket_byname(struct net *net,  in __unix_find_socket_byname()
277 	struct sock *s;  in __unix_find_socket_byname()
294 static inline struct sock *unix_find_socket_byname(struct net *net,  in unix_find_socket_byname()
299 	struct sock *s;  in unix_find_socket_byname()
309 static struct sock *unix_find_socket_byinode(struct inode *i)  in unix_find_socket_byinode()
311 	struct sock *s;  in unix_find_socket_byinode()
374 static int unix_dgram_peer_wake_connect(struct sock *sk, struct sock *other)  in unix_dgram_peer_wake_connect()
395 static void unix_dgram_peer_wake_disconnect(struct sock *sk,  in unix_dgram_peer_wake_disconnect()
396 					    struct sock *other)  in unix_dgram_peer_wake_disconnect()
412 static void unix_dgram_peer_wake_disconnect_wakeup(struct sock *sk,  in unix_dgram_peer_wake_disconnect_wakeup()
413 						   struct sock *other)  in unix_dgram_peer_wake_disconnect_wakeup()
426 static int unix_dgram_peer_wake_me(struct sock *sk, struct sock *other)  in unix_dgram_peer_wake_me()
441 static int unix_writable(const struct sock *sk)  in unix_writable()
447 static void unix_write_space(struct sock *sk)  in unix_write_space()
466 static void unix_dgram_disconnected(struct sock *sk, struct sock *other)  in unix_dgram_disconnected()
483 static void unix_sock_destructor(struct sock *sk)  in unix_sock_destructor()
510 static void unix_release_sock(struct sock *sk, int embrion)  in unix_release_sock()
514 	struct sock *skpair;  in unix_release_sock()
584 static void init_peercred(struct sock *sk)  in init_peercred()
593 static void copy_peercred(struct sock *sk, struct sock *peersk)  in copy_peercred()
602 static int unix_listen(struct socket *sock, int backlog)  in unix_listen()  argument
605 	struct sock *sk = sock->sk;  in unix_listen()
610 	if (sock->type != SOCK_STREAM && sock->type != SOCK_SEQPACKET)  in unix_listen()
660 static int unix_set_peek_off(struct sock *sk, int val)  in unix_set_peek_off()
755 static struct sock *unix_create1(struct net *net, struct socket *sock, int kern)  in unix_create1()  argument
757 	struct sock *sk = NULL;  in unix_create1()
768 	sock_init_data(sock, sk);  in unix_create1()
796 static int unix_create(struct net *net, struct socket *sock, int protocol,  in unix_create()  argument
802 	sock->state = SS_UNCONNECTED;  in unix_create()
804 	switch (sock->type) {  in unix_create()
806 		sock->ops = &unix_stream_ops;  in unix_create()
813 		sock->type = SOCK_DGRAM;  in unix_create()
815 		sock->ops = &unix_dgram_ops;  in unix_create()
818 		sock->ops = &unix_seqpacket_ops;  in unix_create()
824 	return unix_create1(net, sock, kern) ? 0 : -ENOMEM;  in unix_create()
827 static int unix_release(struct socket *sock)  in unix_release()  argument
829 	struct sock *sk = sock->sk;  in unix_release()
835 	sock->sk = NULL;  in unix_release()
840 static int unix_autobind(struct socket *sock)  in unix_autobind()  argument
842 	struct sock *sk = sock->sk;  in unix_autobind()
873 	if (__unix_find_socket_byname(net, addr->name, addr->len, sock->type,  in unix_autobind()
901 static struct sock *unix_find_other(struct net *net,  in unix_find_other()
905 	struct sock *u;  in unix_find_other()
973 static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)  in unix_bind()  argument
975 	struct sock *sk = sock->sk;  in unix_bind()
992 		err = unix_autobind(sock);  in unix_bind()
1042 		       (SOCK_INODE(sock)->i_mode & ~current_umask());  in unix_bind()
1084 static void unix_state_double_lock(struct sock *sk1, struct sock *sk2)  in unix_state_double_lock()
1099 static void unix_state_double_unlock(struct sock *sk1, struct sock *sk2)  in unix_state_double_unlock()
1109 static int unix_dgram_connect(struct socket *sock, struct sockaddr *addr,  in unix_dgram_connect()  argument
1112 	struct sock *sk = sock->sk;  in unix_dgram_connect()
1115 	struct sock *other;  in unix_dgram_connect()
1125 		if (test_bit(SOCK_PASSCRED, &sock->flags) &&  in unix_dgram_connect()
1126 		    !unix_sk(sk)->addr && (err = unix_autobind(sock)) != 0)  in unix_dgram_connect()
1130 		other = unix_find_other(net, sunaddr, alen, sock->type, hash, &err);  in unix_dgram_connect()
1163 		struct sock *old_peer = unix_peer(sk);  in unix_dgram_connect()
1185 static long unix_wait_for_peer(struct sock *other, long timeo)  in unix_wait_for_peer()
1206 static int unix_stream_connect(struct socket *sock, struct sockaddr *uaddr,  in unix_stream_connect()  argument
1210 	struct sock *sk = sock->sk;  in unix_stream_connect()
1213 	struct sock *newsk = NULL;  in unix_stream_connect()
1214 	struct sock *other = NULL;  in unix_stream_connect()
1226 	if (test_bit(SOCK_PASSCRED, &sock->flags) && !u->addr &&  in unix_stream_connect()
1227 	    (err = unix_autobind(sock)) != 0)  in unix_stream_connect()
1350 	sock->state	= SS_CONNECTED;  in unix_stream_connect()
1383 	struct sock *ska = socka->sk, *skb = sockb->sk;  in unix_socketpair()
1411 static int unix_accept(struct socket *sock, struct socket *newsock, int flags)  in unix_accept()  argument
1413 	struct sock *sk = sock->sk;  in unix_accept()
1414 	struct sock *tsk;  in unix_accept()
1419 	if (sock->type != SOCK_STREAM && sock->type != SOCK_SEQPACKET)  in unix_accept()
1445 	unix_sock_inherit_flags(sock, newsock);  in unix_accept()
1455 static int unix_getname(struct socket *sock, struct sockaddr *uaddr, int *uaddr_len, int peer)  in unix_getname()  argument
1457 	struct sock *sk = sock->sk;  in unix_getname()
1543 		struct sock *sk = unix_get_socket(scm->fp->fp[i]);  in unix_attach_fds()
1584 static bool unix_passcred_enabled(const struct socket *sock,  in unix_passcred_enabled()  argument
1585 				  const struct sock *other)  in unix_passcred_enabled()
1587 	return test_bit(SOCK_PASSCRED, &sock->flags) ||  in unix_passcred_enabled()
1597 static void maybe_add_creds(struct sk_buff *skb, const struct socket *sock,  in maybe_add_creds()  argument
1598 			    const struct sock *other)  in maybe_add_creds()
1602 	if (unix_passcred_enabled(sock, other)) {  in maybe_add_creds()
1610 			    const struct sock *other)  in maybe_init_creds()
1641 static int unix_dgram_sendmsg(struct socket *sock, struct msghdr *msg,  in unix_dgram_sendmsg()  argument
1644 	struct sock *sk = sock->sk;  in unix_dgram_sendmsg()
1648 	struct sock *other = NULL;  in unix_dgram_sendmsg()
1660 	err = scm_send(sock, msg, &scm, false);  in unix_dgram_sendmsg()
1681 	if (test_bit(SOCK_PASSCRED, &sock->flags) && !u->addr  in unix_dgram_sendmsg()
1682 	    && (err = unix_autobind(sock)) != 0)  in unix_dgram_sendmsg()
1823 	maybe_add_creds(skb, sock, other);  in unix_dgram_sendmsg()
1851 static int unix_stream_sendmsg(struct socket *sock, struct msghdr *msg,  in unix_stream_sendmsg()  argument
1854 	struct sock *sk = sock->sk;  in unix_stream_sendmsg()
1855 	struct sock *other = NULL;  in unix_stream_sendmsg()
1865 	err = scm_send(sock, msg, &scm, false);  in unix_stream_sendmsg()
1929 		maybe_add_creds(skb, sock, other);  in unix_stream_sendmsg()
1961 	struct sock *other, *sk = socket->sk;  in unix_stream_sendpage()
2070 static int unix_seqpacket_sendmsg(struct socket *sock, struct msghdr *msg,  in unix_seqpacket_sendmsg()  argument
2074 	struct sock *sk = sock->sk;  in unix_seqpacket_sendmsg()
2086 	return unix_dgram_sendmsg(sock, msg, len);  in unix_seqpacket_sendmsg()
2089 static int unix_seqpacket_recvmsg(struct socket *sock, struct msghdr *msg,  in unix_seqpacket_recvmsg()  argument
2092 	struct sock *sk = sock->sk;  in unix_seqpacket_recvmsg()
2097 	return unix_dgram_recvmsg(sock, msg, size, flags);  in unix_seqpacket_recvmsg()
2100 static void unix_copy_addr(struct msghdr *msg, struct sock *sk)  in unix_copy_addr()
2110 static int unix_dgram_recvmsg(struct socket *sock, struct msghdr *msg,  in unix_dgram_recvmsg()  argument
2114 	struct sock *sk = sock->sk;  in unix_dgram_recvmsg()
2196 	scm_recv(sock, msg, &scm, flags);  in unix_dgram_recvmsg()
2209 static long unix_stream_data_wait(struct sock *sk, long timeo,  in unix_stream_data_wait()
2264 	struct socket *sock = state->socket;  in unix_stream_read_generic()  local
2265 	struct sock *sk = sock->sk;  in unix_stream_read_generic()
2370 		} else if (test_bit(SOCK_PASSCRED, &sock->flags)) {  in unix_stream_read_generic()
2453 		scm_recv(sock, state->msg, &scm, flags);  in unix_stream_read_generic()
2471 static int unix_stream_recvmsg(struct socket *sock, struct msghdr *msg,  in unix_stream_recvmsg()  argument
2476 		.socket = sock,  in unix_stream_recvmsg()
2485 static ssize_t skb_unix_socket_splice(struct sock *sk,  in skb_unix_socket_splice()
2509 static ssize_t unix_stream_splice_read(struct socket *sock,  loff_t *ppos,  in unix_stream_splice_read()  argument
2515 		.socket = sock,  in unix_stream_splice_read()
2524 	if (sock->file->f_flags & O_NONBLOCK ||  in unix_stream_splice_read()
2531 static int unix_shutdown(struct socket *sock, int mode)  in unix_shutdown()  argument
2533 	struct sock *sk = sock->sk;  in unix_shutdown()
2534 	struct sock *other;  in unix_shutdown()
2577 long unix_inq_len(struct sock *sk)  in unix_inq_len()
2601 long unix_outq_len(struct sock *sk)  in unix_outq_len()
2607 static int unix_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)  in unix_ioctl()  argument
2609 	struct sock *sk = sock->sk;  in unix_ioctl()
2632 static unsigned int unix_poll(struct file *file, struct socket *sock, poll_table *wait)  in unix_poll()  argument
2634 	struct sock *sk = sock->sk;  in unix_poll()
2667 static unsigned int unix_dgram_poll(struct file *file, struct socket *sock,  in unix_dgram_poll()  argument
2670 	struct sock *sk = sock->sk, *other;  in unix_dgram_poll()
2732 static struct sock *unix_from_bucket(struct seq_file *seq, loff_t *pos)  in unix_from_bucket()
2736 	struct sock *sk;  in unix_from_bucket()
2749 static struct sock *unix_next_socket(struct seq_file *seq,  in unix_next_socket()
2750 				     struct sock *sk,  in unix_next_socket()
2755 	while (sk > (struct sock *)SEQ_START_TOKEN) {  in unix_next_socket()
2809 		struct sock *s = v;  in unix_seq_show()