/*

 * Copyright 2001-2021 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the Apache License 2.0 (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

#include <openssl/crypto.h>

#include <openssl/opensslconf.h>

#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_UEFI)

int OPENSSL_issetugid(void)

{

    return 0;

}

#elif defined(__OpenBSD__) || (defined(__FreeBSD__) && __FreeBSD__ > 2) || defined(__DragonFly__) || (defined(__GLIBC__) && defined(__FreeBSD_kernel__))

# include <unistd.h>

int OPENSSL_issetugid(void)

{

    return issetugid();

}

#else

# include <unistd.h>

# include <sys/types.h>

# if defined(__GLIBC__) && defined(__GLIBC_PREREQ)

#  if __GLIBC_PREREQ(2, 16)

#   include <sys/auxv.h>

#   define OSSL_IMPLEMENT_GETAUXVAL

#  endif

# elif defined(__ANDROID_API__)

/* see https://developer.android.google.cn/ndk/guides/cpu-features */

#  if __ANDROID_API__ >= 18

#   include <sys/auxv.h>

#   define OSSL_IMPLEMENT_GETAUXVAL

#  endif

# endif

int OPENSSL_issetugid(void)

{

# ifdef OSSL_IMPLEMENT_GETAUXVAL

    return getauxval(AT_SECURE) != 0;

# else

    return getuid() != geteuid() || getgid() != getegid();

# endif

}

#endif