?? getsockopt.c
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/* Copyright (C) 1992,94,97,2001,02 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 <sys/socket.h>#include <hurd.h>#include <hurd/fd.h>#include <hurd/socket.h>#include <string.h>/* Put the current value for socket FD's option OPTNAME at protocol level LEVEL into OPTVAL (which is *OPTLEN bytes long), and set *OPTLEN to the value's actual length. Returns 0 on success, -1 for errors. *//* XXX should be __getsockopt ? */intgetsockopt (int fd, int level, int optname, void *optval, socklen_t *optlen){ error_t err; char *buf = optval; mach_msg_type_number_t buflen = *optlen; if (err = HURD_DPORT_USE (fd, __socket_getopt (port, level, optname, &buf, &buflen))) return __hurd_dfail (fd, err); if (*optlen > buflen) *optlen = buflen; if (buf != optval) { memcpy (optval, buf, *optlen); __vm_deallocate (__mach_task_self (), (vm_address_t) buf, buflen); } return 0;}
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