1e1051a39Sopenharmony_ci/* 2e1051a39Sopenharmony_ci * Copyright 2001-2021 The OpenSSL Project Authors. All Rights Reserved. 3e1051a39Sopenharmony_ci * 4e1051a39Sopenharmony_ci * Licensed under the Apache License 2.0 (the "License"). You may not use 5e1051a39Sopenharmony_ci * this file except in compliance with the License. You can obtain a copy 6e1051a39Sopenharmony_ci * in the file LICENSE in the source distribution or at 7e1051a39Sopenharmony_ci * https://www.openssl.org/source/license.html 8e1051a39Sopenharmony_ci */ 9e1051a39Sopenharmony_ci 10e1051a39Sopenharmony_ci#include <openssl/crypto.h> 11e1051a39Sopenharmony_ci#include <openssl/opensslconf.h> 12e1051a39Sopenharmony_ci 13e1051a39Sopenharmony_ci#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_UEFI) 14e1051a39Sopenharmony_ci 15e1051a39Sopenharmony_ciint OPENSSL_issetugid(void) 16e1051a39Sopenharmony_ci{ 17e1051a39Sopenharmony_ci return 0; 18e1051a39Sopenharmony_ci} 19e1051a39Sopenharmony_ci 20e1051a39Sopenharmony_ci#elif defined(__OpenBSD__) || (defined(__FreeBSD__) && __FreeBSD__ > 2) || defined(__DragonFly__) || (defined(__GLIBC__) && defined(__FreeBSD_kernel__)) 21e1051a39Sopenharmony_ci 22e1051a39Sopenharmony_ci# include <unistd.h> 23e1051a39Sopenharmony_ci 24e1051a39Sopenharmony_ciint OPENSSL_issetugid(void) 25e1051a39Sopenharmony_ci{ 26e1051a39Sopenharmony_ci return issetugid(); 27e1051a39Sopenharmony_ci} 28e1051a39Sopenharmony_ci 29e1051a39Sopenharmony_ci#else 30e1051a39Sopenharmony_ci 31e1051a39Sopenharmony_ci# include <unistd.h> 32e1051a39Sopenharmony_ci# include <sys/types.h> 33e1051a39Sopenharmony_ci 34e1051a39Sopenharmony_ci# if defined(__GLIBC__) && defined(__GLIBC_PREREQ) 35e1051a39Sopenharmony_ci# if __GLIBC_PREREQ(2, 16) 36e1051a39Sopenharmony_ci# include <sys/auxv.h> 37e1051a39Sopenharmony_ci# define OSSL_IMPLEMENT_GETAUXVAL 38e1051a39Sopenharmony_ci# endif 39e1051a39Sopenharmony_ci# elif defined(__ANDROID_API__) 40e1051a39Sopenharmony_ci/* see https://developer.android.google.cn/ndk/guides/cpu-features */ 41e1051a39Sopenharmony_ci# if __ANDROID_API__ >= 18 42e1051a39Sopenharmony_ci# include <sys/auxv.h> 43e1051a39Sopenharmony_ci# define OSSL_IMPLEMENT_GETAUXVAL 44e1051a39Sopenharmony_ci# endif 45e1051a39Sopenharmony_ci# endif 46e1051a39Sopenharmony_ci 47e1051a39Sopenharmony_ciint OPENSSL_issetugid(void) 48e1051a39Sopenharmony_ci{ 49e1051a39Sopenharmony_ci# ifdef OSSL_IMPLEMENT_GETAUXVAL 50e1051a39Sopenharmony_ci return getauxval(AT_SECURE) != 0; 51e1051a39Sopenharmony_ci# else 52e1051a39Sopenharmony_ci return getuid() != geteuid() || getgid() != getegid(); 53e1051a39Sopenharmony_ci# endif 54e1051a39Sopenharmony_ci} 55e1051a39Sopenharmony_ci#endif 56