| /* Copyright (C) 1992-2014 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; see the file COPYING.LIB. If |
| not, see <http://www.gnu.org/licenses/>. */ |
| |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <fcntl-internal.h> |
| #include <string.h> |
| #include <sys/socket.h> |
| #include <hurd.h> |
| #include <hurd/fd.h> |
| #include <hurd/socket.h> |
| |
| /* Await a connection on socket FD. |
| When a connection arrives, open a new socket to communicate with it, |
| set *ADDRARG (which is *ADDR_LEN bytes long) to the address of the connecting |
| peer and *ADDR_LEN to the address's actual length, and return the |
| new socket's descriptor, or -1 for errors. The operation can be influenced |
| by the FLAGS parameter. */ |
| int |
| __libc_accept4 (int fd, __SOCKADDR_ARG addrarg, socklen_t *addr_len, int flags) |
| { |
| error_t err; |
| socket_t new; |
| addr_port_t aport; |
| struct sockaddr *addr = addrarg.__sockaddr__; |
| char *buf = (char *) addr; |
| mach_msg_type_number_t buflen; |
| int type; |
| |
| flags = sock_to_o_flags (flags); |
| |
| if (flags & ~(O_CLOEXEC | O_NONBLOCK)) |
| return __hurd_fail (EINVAL); |
| |
| if (err = HURD_DPORT_USE (fd, __socket_accept (port, &new, &aport))) |
| return __hurd_dfail (fd, err); |
| |
| if (addr != NULL) |
| { |
| buflen = *addr_len; |
| err = __socket_whatis_address (aport, &type, &buf, &buflen); |
| if (err == EOPNOTSUPP) |
| /* If the protocol server can't tell us the address, just return a |
| zero-length one. */ |
| { |
| buf = (char *)addr; |
| buflen = 0; |
| err = 0; |
| } |
| } |
| __mach_port_deallocate (__mach_task_self (), aport); |
| |
| if (! err) |
| { |
| if (flags & O_NONBLOCK) |
| err = __io_set_some_openmodes (new, O_NONBLOCK); |
| /* TODO: do we need special ERR massaging after the previous call? */ |
| } |
| |
| if (err) |
| { |
| __mach_port_deallocate (__mach_task_self (), new); |
| return __hurd_dfail (fd, err); |
| } |
| |
| if (addr != NULL) |
| { |
| if (*addr_len > buflen) |
| *addr_len = buflen; |
| |
| if (buf != (char *) addr) |
| { |
| memcpy (addr, buf, *addr_len); |
| __vm_deallocate (__mach_task_self (), (vm_address_t) buf, buflen); |
| } |
| |
| if (buflen > 0) |
| addr->sa_family = type; |
| } |
| |
| return _hurd_intern_fd (new, O_IGNORE_CTTY | flags, 1); |
| } |
| libc_hidden_def (__libc_accept4) |
| weak_alias (__libc_accept4, accept4) |