1*d915a14eSPedro F. Giffuni /*- 2*d915a14eSPedro F. Giffuni * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3*d915a14eSPedro F. Giffuni * 4e6063dd1SDima Dorfman * Copyright (c) 2001 Dima Dorfman. 5e6063dd1SDima Dorfman * All rights reserved. 6e6063dd1SDima Dorfman * 7e6063dd1SDima Dorfman * Redistribution and use in source and binary forms, with or without 8e6063dd1SDima Dorfman * modification, are permitted provided that the following conditions 9e6063dd1SDima Dorfman * are met: 10e6063dd1SDima Dorfman * 1. Redistributions of source code must retain the above copyright 11e6063dd1SDima Dorfman * notice, this list of conditions and the following disclaimer. 12e6063dd1SDima Dorfman * 2. Redistributions in binary form must reproduce the above copyright 13e6063dd1SDima Dorfman * notice, this list of conditions and the following disclaimer in the 14e6063dd1SDima Dorfman * documentation and/or other materials provided with the distribution. 15e6063dd1SDima Dorfman * 16e6063dd1SDima Dorfman * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17e6063dd1SDima Dorfman * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18e6063dd1SDima Dorfman * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19e6063dd1SDima Dorfman * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20e6063dd1SDima Dorfman * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21e6063dd1SDima Dorfman * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22e6063dd1SDima Dorfman * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23e6063dd1SDima Dorfman * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24e6063dd1SDima Dorfman * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25e6063dd1SDima Dorfman * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26e6063dd1SDima Dorfman * SUCH DAMAGE. 27e6063dd1SDima Dorfman */ 28e6063dd1SDima Dorfman 2960e104f3SDavid E. O'Brien #include <sys/cdefs.h> 30ea8d448aSDavid E. O'Brien __FBSDID("$FreeBSD$"); 31e6063dd1SDima Dorfman 3259797edfSJilles Tjoelker #include "namespace.h" 33e6063dd1SDima Dorfman #include <sys/param.h> 34e6063dd1SDima Dorfman #include <sys/socket.h> 35e6063dd1SDima Dorfman #include <sys/ucred.h> 36e6063dd1SDima Dorfman #include <sys/un.h> 37e6063dd1SDima Dorfman 3876183f34SDima Dorfman #include <errno.h> 39e6063dd1SDima Dorfman #include <unistd.h> 4059797edfSJilles Tjoelker #include "un-namespace.h" 41e6063dd1SDima Dorfman 42e6063dd1SDima Dorfman int 43e6063dd1SDima Dorfman getpeereid(int s, uid_t *euid, gid_t *egid) 44e6063dd1SDima Dorfman { 45e6063dd1SDima Dorfman struct xucred xuc; 46e6063dd1SDima Dorfman socklen_t xuclen; 47e6063dd1SDima Dorfman int error; 48e6063dd1SDima Dorfman 49e6063dd1SDima Dorfman xuclen = sizeof(xuc); 5059797edfSJilles Tjoelker error = _getsockopt(s, 0, LOCAL_PEERCRED, &xuc, &xuclen); 51e6063dd1SDima Dorfman if (error != 0) 52e6063dd1SDima Dorfman return (error); 5376183f34SDima Dorfman if (xuc.cr_version != XUCRED_VERSION) 5476183f34SDima Dorfman return (EINVAL); 55e6063dd1SDima Dorfman *euid = xuc.cr_uid; 56e6063dd1SDima Dorfman *egid = xuc.cr_gid; 57e6063dd1SDima Dorfman return (0); 58e6063dd1SDima Dorfman } 59