issetugid.c

/*
 * Copyright (c) 2020 Brian Callahan <bcallah@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include "pconfig.h"

#if defined(HAVE_ISSETUGID)
#include <unistd.h>
#elif defined(HAVE_GETAUXVAL)
#include <sys/auxv.h>
#endif

int
oksh_issetugid(void)
{

#if defined(HAVE_ISSETUGID)
	return issetugid();
#elif defined(HAVE_GETAUXVAL)
	return (int) getauxval(AT_SECURE);
#else
	return 0;
#endif
}