aefb980c45
It turns out that AT_SECURE may be defined through other means than our inclusion of sys/auxv.h, so to be on the safe side, we define our own guard and use that to determine if getauxval() should be used or not. Fixes #7932 Reviewed-by: Paul Dale <paul.dale@oracle.com> (Merged from https://github.com/openssl/openssl/pull/7933)
49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
/*
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* Copyright 2001-2018 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <openssl/crypto.h>
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#include <openssl/opensslconf.h>
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#if defined(__OpenBSD__) || (defined(__FreeBSD__) && __FreeBSD__ > 2) || defined(__DragonFly__)
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# include OPENSSL_UNISTD
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int OPENSSL_issetugid(void)
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{
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return issetugid();
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}
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#elif defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_UEFI)
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int OPENSSL_issetugid(void)
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{
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return 0;
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}
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#else
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# include OPENSSL_UNISTD
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# include <sys/types.h>
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# if defined(__GLIBC__) && defined(__GLIBC_PREREQ)
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# if __GLIBC_PREREQ(2, 16)
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# include <sys/auxv.h>
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# define OSSL_IMPLEMENT_GETAUXVAL
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# endif
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# endif
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int OPENSSL_issetugid(void)
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{
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# ifdef OSSL_IMPLEMENT_GETAUXVAL
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return getauxval(AT_SECURE) != 0;
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# else
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return getuid() != geteuid() || getgid() != getegid();
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# endif
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}
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#endif
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