| /* Copyright (C) 1992, 94, 95, 96, 97, 2000 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <sys/socket.h> |
| #include <unistd.h> |
| |
| #include <hurd.h> |
| #include <hurd/fd.h> |
| #include <hurd/socket.h> |
| |
| /* Create two new sockets, of type TYPE in domain DOMAIN and using |
| protocol PROTOCOL, which are connected to each other, and put file |
| descriptors for them in FDS[0] and FDS[1]. If PROTOCOL is zero, |
| one will be chosen automatically. Returns 0 on success, -1 for errors. */ |
| int |
| __socketpair (int domain, int type, int protocol, int fds[2]) |
| { |
| error_t err; |
| socket_t server, sock1, sock2; |
| int d1, d2; |
| |
| if (fds == NULL) |
| return __hurd_fail (EINVAL); |
| |
| /* Find the domain's socket server. */ |
| server = _hurd_socket_server (domain, 0); |
| if (server == MACH_PORT_NULL) |
| return -1; |
| |
| /* Create two sockets and connect them together. */ |
| |
| err = __socket_create (server, type, protocol, &sock1); |
| if (err == MACH_SEND_INVALID_DEST || err == MIG_SERVER_DIED |
| || err == MIG_BAD_ID || err == EOPNOTSUPP) |
| { |
| /* On the first use of the socket server during the operation, |
| allow for the old server port dying. */ |
| server = _hurd_socket_server (domain, 1); |
| if (server == MACH_PORT_NULL) |
| return -1; |
| err = __socket_create (server, type, protocol, &sock1); |
| } |
| if (err) |
| return __hurd_fail (err); |
| if (err = __socket_create (server, type, protocol, &sock2)) |
| { |
| __mach_port_deallocate (__mach_task_self (), sock1); |
| return __hurd_fail (err); |
| } |
| if (err = __socket_connect2 (sock1, sock2)) |
| { |
| __mach_port_deallocate (__mach_task_self (), sock1); |
| __mach_port_deallocate (__mach_task_self (), sock2); |
| return __hurd_fail (err); |
| } |
| |
| /* Put the sockets into file descriptors. */ |
| |
| d1 = _hurd_intern_fd (sock1, O_IGNORE_CTTY, 1); |
| if (d1 < 0) |
| { |
| __mach_port_deallocate (__mach_task_self (), sock2); |
| return -1; |
| } |
| d2 = _hurd_intern_fd (sock2, O_IGNORE_CTTY, 1); |
| if (d2 < 0) |
| { |
| err = errno; |
| (void) close (d1); |
| return __hurd_fail (err); |
| } |
| |
| fds[0] = d1; |
| fds[1] = d2; |
| return 0; |
| } |
| |
| weak_alias (__socketpair, socketpair) |