1 /* Copyright (C) 1992-2024 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
20 #include <fcntl-internal.h>
21 #include <sys/socket.h>
26 #include <hurd/socket.h>
28 /* Create two new sockets, of type TYPE in domain DOMAIN and using
29 protocol PROTOCOL, which are connected to each other, and put file
30 descriptors for them in FDS[0] and FDS[1]. If PROTOCOL is zero,
31 one will be chosen automatically. Returns 0 on success, -1 for errors. */
33 __socketpair (int domain
, int type
, int protocol
, int fds
[2])
36 socket_t server
, sock1
, sock2
;
38 int flags
= sock_to_o_flags (type
& ~SOCK_TYPE_MASK
);
39 type
&= SOCK_TYPE_MASK
;
41 if (flags
& ~(O_CLOEXEC
| O_NONBLOCK
))
42 return __hurd_fail (EINVAL
);
45 return __hurd_fail (EINVAL
);
47 /* Find the domain's socket server. */
48 server
= _hurd_socket_server (domain
, 0);
49 if (server
== MACH_PORT_NULL
)
52 /* Create two sockets and connect them together. */
54 err
= __socket_create (server
, type
, protocol
, &sock1
);
55 if (err
== MACH_SEND_INVALID_DEST
|| err
== MIG_SERVER_DIED
56 || err
== MIG_BAD_ID
|| err
== EOPNOTSUPP
)
58 /* On the first use of the socket server during the operation,
59 allow for the old server port dying. */
60 server
= _hurd_socket_server (domain
, 1);
61 if (server
== MACH_PORT_NULL
)
63 err
= __socket_create (server
, type
, protocol
, &sock1
);
65 /* TODO: do we need special ERR massaging here, like it is done in
69 if (flags
& O_NONBLOCK
)
70 err
= __io_set_some_openmodes (sock1
, O_NONBLOCK
);
71 /* TODO: do we need special ERR massaging after the previous call? */
74 return __hurd_fail (err
);
75 if (err
= __socket_create (server
, type
, protocol
, &sock2
))
77 __mach_port_deallocate (__mach_task_self (), sock1
);
78 return __hurd_fail (err
);
80 if (flags
& O_NONBLOCK
)
81 err
= __io_set_some_openmodes (sock2
, O_NONBLOCK
);
82 /* TODO: do we need special ERR massaging after the previous call? */
84 err
= __socket_connect2 (sock1
, sock2
);
87 __mach_port_deallocate (__mach_task_self (), sock1
);
88 __mach_port_deallocate (__mach_task_self (), sock2
);
89 return __hurd_fail (err
);
92 /* Put the sockets into file descriptors. */
94 d1
= _hurd_intern_fd (sock1
, O_IGNORE_CTTY
| flags
, 1);
97 __mach_port_deallocate (__mach_task_self (), sock2
);
100 d2
= _hurd_intern_fd (sock2
, O_IGNORE_CTTY
| flags
, 1);
105 return __hurd_fail (err
);
113 weak_alias (__socketpair
, socketpair
)