1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2018 Google LLC 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/types.h> 30 #include <stdbool.h> 31 #include <syslog.h> 32 33 /* 34 * The following functions were removed from OpenBSD for good reasons: 35 * 36 * - arc4random_stir() 37 * - arc4random_addrandom() 38 * 39 * On FreeBSD, for backward ABI compatibility, we provide two wrapper which 40 * logs this event and returns. 41 */ 42 43 void __arc4random_stir_fbsd11(void); 44 void __arc4random_addrandom_fbsd11(u_char *, int); 45 46 void 47 __arc4random_stir_fbsd11(void) 48 { 49 static bool warned = false; 50 51 if (!warned) 52 syslog(LOG_DEBUG, "Deprecated function arc4random_stir() called"); 53 warned = true; 54 } 55 56 void 57 __arc4random_addrandom_fbsd11(u_char * dummy1 __unused, int dummy2 __unused) 58 { 59 static bool warned = false; 60 61 if (!warned) 62 syslog(LOG_DEBUG, "Deprecated function arc4random_addrandom() called"); 63 warned = true; 64 } 65 66 __sym_compat(arc4random_stir, __arc4random_stir_fbsd11, FBSD_1.0); 67 __sym_compat(arc4random_addrandom, __arc4random_addrandom_fbsd11, FBSD_1.0); 68