issetugid.c
1/*
2 * Copyright (c) 2020 Brian Callahan <bcallah@openbsd.org>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17#include "pconfig.h"
18
19#if defined(HAVE_ISSETUGID)
20#include <unistd.h>
21#elif defined(HAVE_GETAUXVAL)
22#include <sys/auxv.h>
23#endif
24
25int
26oksh_issetugid(void)
27{
28
29#if defined(HAVE_ISSETUGID)
30 return issetugid();
31#elif defined(HAVE_GETAUXVAL)
32 return (int) getauxval(AT_SECURE);
33#else
34 return 0;
35#endif
36}
