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100 lines
2.8 KiB
C
100 lines
2.8 KiB
C
/* Copyright (C) 1992-2013 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, see <http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <fcntl.h>
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#include <fcntl-internal.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <hurd.h>
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#include <hurd/fd.h>
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#include <hurd/socket.h>
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/* Await a connection on socket FD.
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When a connection arrives, open a new socket to communicate with it,
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set *ADDRARG (which is *ADDR_LEN bytes long) to the address of the connecting
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peer and *ADDR_LEN to the address's actual length, and return the
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new socket's descriptor, or -1 for errors. The operation can be influenced
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by the FLAGS parameter. */
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int
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__libc_accept4 (int fd, __SOCKADDR_ARG addrarg, socklen_t *addr_len, int flags)
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{
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error_t err;
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socket_t new;
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addr_port_t aport;
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struct sockaddr *addr = addrarg.__sockaddr__;
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char *buf = (char *) addr;
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mach_msg_type_number_t buflen;
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int type;
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flags = sock_to_o_flags (flags);
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if (flags & ~(O_CLOEXEC | O_NONBLOCK))
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return __hurd_fail (EINVAL);
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if (err = HURD_DPORT_USE (fd, __socket_accept (port, &new, &aport)))
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return __hurd_dfail (fd, err);
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if (addr != NULL)
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{
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buflen = *addr_len;
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err = __socket_whatis_address (aport, &type, &buf, &buflen);
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if (err == EOPNOTSUPP)
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/* If the protocol server can't tell us the address, just return a
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zero-length one. */
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{
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buf = (char *)addr;
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buflen = 0;
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err = 0;
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}
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}
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__mach_port_deallocate (__mach_task_self (), aport);
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if (! err)
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{
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if (flags & O_NONBLOCK)
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err = __io_set_some_openmodes (new, O_NONBLOCK);
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/* TODO: do we need special ERR massaging after the previous call? */
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}
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if (err)
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{
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__mach_port_deallocate (__mach_task_self (), new);
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return __hurd_dfail (fd, err);
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}
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if (addr != NULL)
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{
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if (*addr_len > buflen)
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*addr_len = buflen;
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if (buf != (char *) addr)
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{
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memcpy (addr, buf, *addr_len);
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__vm_deallocate (__mach_task_self (), (vm_address_t) buf, buflen);
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}
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if (buflen > 0)
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addr->sa_family = type;
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}
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return _hurd_intern_fd (new, O_IGNORE_CTTY | flags, 1);
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}
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libc_hidden_def (__libc_accept4)
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weak_alias (__libc_accept4, accept4)
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