net/unix/af_unix.c

675 	 * Can't we simply set sock->err?
726 	int err;
730 	err = -EOPNOTSUPP;
733 	err = -EINVAL;
745 	err = 0;
750 	return err;
956 	int err;
960 		err = -ENFILE;
961 		goto err;
970 		err = -ENOMEM;
971 		goto err;
998 err:
1000 	return ERR_PTR(err);
1061 	int err;
1064 	err = kern_path(sunaddr->sun_path, LOOKUP_FOLLOW, &path);
1065 	if (err)
1068 	err = path_permission(&path, MAY_WRITE);
1069 	if (err)
1072 	err = -ECONNREFUSED;
1081 	err = -EPROTOTYPE;
1096 	return ERR_PTR(err);
1139 	int err;
1141 	err = mutex_lock_interruptible(&u->bindlock);
1142 	if (err)
1143 		return err;
1148 	err = -ENOMEM;
1177 			err = -ENOSPC;
1187 	err = 0;
1190 	return err;
1205 	int err;
1218 		err = PTR_ERR(dentry);
1226 	err = security_path_mknod(&parent, dentry, mode, 0);
1227 	if (!err)
1228 		err = vfs_mknod(idmap, d_inode(parent.dentry), dentry, mode, 0);
1229 	if (err)
1231 	err = mutex_lock_interruptible(&u->bindlock);
1232 	if (err)
1250 	err = -EINVAL;
1258 	return err == -EEXIST ? -EADDRINUSE : err;
1268 	int err;
1274 	err = mutex_lock_interruptible(&u->bindlock);
1275 	if (err)
1279 		err = -EINVAL;
1296 	err = -EADDRINUSE;
1301 	return err;
1308 	int err;
1314 	err = unix_validate_addr(sunaddr, addr_len);
1315 	if (err)
1316 		return err;
1319 		err = unix_bind_bsd(sk, sunaddr, addr_len);
1321 		err = unix_bind_abstract(sk, sunaddr, addr_len);
1323 	return err;
1355 	int err;
1357 	err = -EINVAL;
1362 		err = unix_validate_addr(sunaddr, alen);
1363 		if (err)
1366 		err = BPF_CGROUP_RUN_PROG_UNIX_CONNECT_LOCK(sk, addr, &alen);
1367 		if (err)
1373 			err = unix_autobind(sk);
1374 			if (err)
1381 			err = PTR_ERR(other);
1394 		err = -EPERM;
1398 		err = security_unix_may_send(sk->sk_socket, other->sk_socket);
1399 		if (err)
1438 	return err;
1472 	int err;
1475 	err = unix_validate_addr(sunaddr, addr_len);
1476 	if (err)
1479 	err = BPF_CGROUP_RUN_PROG_UNIX_CONNECT_LOCK(sk, uaddr, &addr_len);
1480 	if (err)
1485 		err = unix_autobind(sk);
1486 		if (err)
1500 		err = PTR_ERR(newsk);
1505 	err = -ENOMEM;
1516 		err = PTR_ERR(other);
1531 	err = -ECONNREFUSED;
1538 		err = -EAGAIN;
1544 		err = sock_intr_errno(timeo);
1570 		err = -EISCONN;
1573 		err = -EINVAL;
1586 	err = security_unix_stream_connect(sk, other, newsk);
1587 	if (err) {
1659 	return err;
1698 	int err;
1700 	err = -EOPNOTSUPP;
1704 	err = -EINVAL;
1713 				&err);
1716 		if (err == 0)
1717 			err = -EINVAL;
1735 	return err;
1744 	int err = 0;
1749 		err = -ENOTCONN;
1752 		err = 0;
1761 		err = offsetof(struct sockaddr_un, sun_path);
1763 		err = addr->len;
1767 			BPF_CGROUP_RUN_SA_PROG(sk, uaddr, &err,
1770 			BPF_CGROUP_RUN_SA_PROG(sk, uaddr, &err,
1775 	return err;
1836 	int err = 0;
1844 		err = unix_attach_fds(scm, skb);
1847 	return err;
1922 	int err;
1924 	err = scm_send(sock, msg, &scm, false);
1925 	if (err < 0)
1926 		return err;
1930 	err = -EOPNOTSUPP;
1935 		err = unix_validate_addr(sunaddr, msg->msg_namelen);
1936 		if (err)
1939 		err = BPF_CGROUP_RUN_PROG_UNIX_SENDMSG_LOCK(sk,
1943 		if (err)
1947 		err = -ENOTCONN;
1955 		err = unix_autobind(sk);
1956 		if (err)
1960 	err = -EMSGSIZE;
1974 				   msg->msg_flags & MSG_DONTWAIT, &err,
1979 	err = unix_scm_to_skb(&scm, skb, true);
1980 	if (err < 0)
1986 	err = skb_copy_datagram_from_iter(skb, 0, &msg->msg_iter, len);
1987 	if (err)
1994 		err = -ECONNRESET;
2001 			err = PTR_ERR(other);
2009 		err = len;
2016 	err = -EPERM;
2031 		err = 0;
2038 			err = -EPIPE;
2048 			err = -ECONNREFUSED;
2054 		if (err)
2059 	err = -EPIPE;
2064 		err = security_unix_may_send(sk->sk_socket, other->sk_socket);
2065 		if (err)
2079 			err = sock_intr_errno(timeo);
2093 			err = -EAGAIN;
2128 	return err;
2142 	int err = 0;
2144 	skb = sock_alloc_send_skb(sock->sk, 1, msg->msg_flags & MSG_DONTWAIT, &err);
2147 		return err;
2149 	err = unix_scm_to_skb(scm, skb, !fds_sent);
2150 	if (err < 0) {
2152 		return err;
2155 	err = skb_copy_datagram_from_iter(skb, 0, &msg->msg_iter, 1);
2157 	if (err) {
2159 		return err;
2185 	return err;
2194 	int err, size;
2201 	err = scm_send(sock, msg, &scm, false);
2202 	if (err < 0)
2203 		return err;
2207 	err = -EOPNOTSUPP;
2218 		err = sk->sk_state == TCP_ESTABLISHED ? -EISCONN : -EOPNOTSUPP;
2221 		err = -ENOTCONN;
2236 						   &err, 0);
2249 						   msg->msg_flags & MSG_DONTWAIT, &err,
2256 		err = unix_scm_to_skb(&scm, skb, !fds_sent);
2257 		if (err < 0) {
2264 			err = skb_splice_from_iter(skb, &msg->msg_iter, size,
2266 			if (err < 0) {
2270 			size = err;
2276 			err = skb_copy_datagram_from_iter(skb, 0, &msg->msg_iter, size);
2277 			if (err) {
2299 		err = queue_oob(sock, msg, other, &scm, fds_sent);
2300 		if (err)
2316 	err = -EPIPE;
2319 	return sent ? : err;
2325 	int err;
2328 	err = sock_error(sk);
2329 	if (err)
2330 		return err;
2371 	int err;
2373 	err = -EOPNOTSUPP;
2384 					      &skip, &err, &last);
2393 		if (err != -EAGAIN)
2397 					      &err, &timeo, last));
2402 		if (sk->sk_type == SOCK_SEQPACKET && err == -EAGAIN &&
2404 			err = 0;
2427 	err = skb_copy_datagram_msg(skb, skip, msg, size);
2428 	if (err)
2463 	err = (flags & MSG_TRUNC) ? skb->len - skip : size;
2471 	return err;
2492 	int err;
2495 	skb = skb_recv_datagram(sk, MSG_DONTWAIT, &err);
2498 		return err;
2655 	int err = 0;
2662 		err = -EINVAL;
2667 		err = -EOPNOTSUPP;
2669 		err = unix_stream_recv_urg(state);
2694 			err = -ECONNRESET;
2718 			err = sock_error(sk);
2719 			if (err)
2726 				err = -EAGAIN;
2736 				err = sock_intr_errno(timeo);
2806 			err = 0;
2858 	return copied ? : err;
3057 	int err;
3062 		err = put_user(amount, (int __user *)arg);
3067 			err = amount;
3069 			err = put_user(amount, (int __user *)arg);
3072 		err = unix_open_file(sk);
3083 			err = put_user(answ, (int __user *)arg);
3088 		err = -ENOIOCTLCMD;
3091 	return err;
3619 	int err;
3621 	err = bpf_iter_init_seq_net(priv_data, aux);
3622 	if (err)
3623 		return err;
3625 	err = bpf_iter_unix_realloc_batch(iter, INIT_BATCH_SZ);
3626 	if (err) {
3628 		return err;