1 /* $OpenBSD: getpeereid.c,v 1.1 2010/07/01 19:15:30 deraadt Exp $ */ 2 3 /* 4 * Copyright (c) 2010 Theo de Raadt <deraadt@openbsd.org> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/types.h> 20 #include <sys/socket.h> 21 22 int 23 getpeereid(int s, uid_t *euid, gid_t *egid) 24 { 25 struct sockpeercred creds; 26 socklen_t credslen = sizeof(creds); 27 int error; 28 29 error = getsockopt(s, SOL_SOCKET, SO_PEERCRED, 30 &creds, &credslen); 31 if (error) 32 return (error); 33 *euid = creds.uid; 34 *egid = creds.gid; 35 return (0); 36 } 37