1c1e80940SXin LI /*-
2*4d846d26SWarner Losh * SPDX-License-Identifier: BSD-2-Clause
3c1e80940SXin LI *
4c1e80940SXin LI * Copyright (c) 2018 Google LLC
5c1e80940SXin LI * All rights reserved.
6c1e80940SXin LI *
7c1e80940SXin LI * Redistribution and use in source and binary forms, with or without
8c1e80940SXin LI * modification, are permitted provided that the following conditions
9c1e80940SXin LI * are met:
10c1e80940SXin LI * 1. Redistributions of source code must retain the above copyright
11c1e80940SXin LI * notice, this list of conditions and the following disclaimer.
12c1e80940SXin LI * 2. Redistributions in binary form must reproduce the above copyright
13c1e80940SXin LI * notice, this list of conditions and the following disclaimer in the
14c1e80940SXin LI * documentation and/or other materials provided with the distribution.
15c1e80940SXin LI *
16c1e80940SXin LI * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17c1e80940SXin LI * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18c1e80940SXin LI * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19c1e80940SXin LI * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20c1e80940SXin LI * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21c1e80940SXin LI * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22c1e80940SXin LI * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23c1e80940SXin LI * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24c1e80940SXin LI * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25c1e80940SXin LI * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26c1e80940SXin LI * SUCH DAMAGE.
27c1e80940SXin LI */
28c1e80940SXin LI
29c1e80940SXin LI #include <sys/types.h>
30c1e80940SXin LI #include <stdbool.h>
31c1e80940SXin LI #include <syslog.h>
32c1e80940SXin LI
33c1e80940SXin LI /*
34c1e80940SXin LI * The following functions were removed from OpenBSD for good reasons:
35c1e80940SXin LI *
36c1e80940SXin LI * - arc4random_stir()
37c1e80940SXin LI * - arc4random_addrandom()
38c1e80940SXin LI *
39c1e80940SXin LI * On FreeBSD, for backward ABI compatibility, we provide two wrapper which
40c1e80940SXin LI * logs this event and returns.
41c1e80940SXin LI */
42c1e80940SXin LI
43c1e80940SXin LI void __arc4random_stir_fbsd11(void);
44c1e80940SXin LI void __arc4random_addrandom_fbsd11(u_char *, int);
45c1e80940SXin LI
46c1e80940SXin LI void
__arc4random_stir_fbsd11(void)47c1e80940SXin LI __arc4random_stir_fbsd11(void)
48c1e80940SXin LI {
49c1e80940SXin LI static bool warned = false;
50c1e80940SXin LI
51c1e80940SXin LI if (!warned)
52c1e80940SXin LI syslog(LOG_DEBUG, "Deprecated function arc4random_stir() called");
53c1e80940SXin LI warned = true;
54c1e80940SXin LI }
55c1e80940SXin LI
56c1e80940SXin LI void
__arc4random_addrandom_fbsd11(u_char * dummy1 __unused,int dummy2 __unused)57c1e80940SXin LI __arc4random_addrandom_fbsd11(u_char * dummy1 __unused, int dummy2 __unused)
58c1e80940SXin LI {
59c1e80940SXin LI static bool warned = false;
60c1e80940SXin LI
61c1e80940SXin LI if (!warned)
62c1e80940SXin LI syslog(LOG_DEBUG, "Deprecated function arc4random_addrandom() called");
63c1e80940SXin LI warned = true;
64c1e80940SXin LI }
65c1e80940SXin LI
66c1e80940SXin LI __sym_compat(arc4random_stir, __arc4random_stir_fbsd11, FBSD_1.0);
67c1e80940SXin LI __sym_compat(arc4random_addrandom, __arc4random_addrandom_fbsd11, FBSD_1.0);
68