getpeereid.c revision 107929
11541Srgrimes/* 21541Srgrimes * Copyright (c) 2001 Dima Dorfman. 31541Srgrimes * All rights reserved. 41541Srgrimes * 51541Srgrimes * Redistribution and use in source and binary forms, with or without 61541Srgrimes * modification, are permitted provided that the following conditions 71541Srgrimes * are met: 81541Srgrimes * 1. Redistributions of source code must retain the above copyright 91541Srgrimes * notice, this list of conditions and the following disclaimer. 101541Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111541Srgrimes * notice, this list of conditions and the following disclaimer in the 121541Srgrimes * documentation and/or other materials provided with the distribution. 131541Srgrimes * 141541Srgrimes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 151541Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 161541Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 171541Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 181541Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 191541Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 201541Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 211541Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 221541Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 231541Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 241541Srgrimes * SUCH DAMAGE. 251541Srgrimes */ 261541Srgrimes 271541Srgrimes#include <sys/cdefs.h> 281541Srgrimes__FBSDID("$FreeBSD: head/lib/libc/gen/getpeereid.c 107929 2002-12-16 13:42:13Z maxim $"); 291541Srgrimes 301541Srgrimes#include <sys/param.h> 311541Srgrimes#include <sys/socket.h> 321541Srgrimes#include <sys/ucred.h> 331541Srgrimes#include <sys/un.h> 341541Srgrimes 351541Srgrimes#include <errno.h> 361541Srgrimes#include <unistd.h> 371541Srgrimes 3850477Speterint 391541Srgrimesgetpeereid(int s, uid_t *euid, gid_t *egid) 401541Srgrimes{ 41104667Sphk struct xucred xuc; 42104667Sphk socklen_t xuclen; 43104667Sphk int error; 441541Srgrimes 451541Srgrimes xuclen = sizeof(xuc); 461541Srgrimes error = getsockopt(s, 0, LOCAL_PEERCRED, &xuc, &xuclen); 471541Srgrimes if (error != 0) 481541Srgrimes return (error); 491541Srgrimes if (xuc.cr_version != XUCRED_VERSION) 501541Srgrimes return (EINVAL); 511541Srgrimes *euid = xuc.cr_uid; 521541Srgrimes *egid = xuc.cr_gid; 531541Srgrimes return (0); 541541Srgrimes} 551541Srgrimes