131 lines
4.9 KiB
C
131 lines
4.9 KiB
C
/* o_init.c */
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/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
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* project.
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*/
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/* ====================================================================
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* Copyright (c) 2011 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* openssl-core@openssl.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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*/
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#include <e_os.h>
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#include <openssl/err.h>
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#ifdef OPENSSL_FIPS
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#include <openssl/fips.h>
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#endif
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#if defined(__GNUC__) && __GNUC__>=2
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void OPENSSL_init(void) __attribute__((constructor));
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/* Most commonly this results in pointer to OPENSSL_init to be dropped
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* to .ctors segment, which is traversed by GCC crtbegin.o upon
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* program startup. Except on a.out OpenBSD where it results in
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* _GLOBAL_$I$init() {init();} being auto-generated by
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* compiler... But one way or another this is believed to cover
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* *all* GCC targets. */
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#elif defined(_MSC_VER)
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# ifdef _WINDLL
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__declspec(dllexport) /* this is essentially cosmetics... */
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# endif
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void OPENSSL_init(void);
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static int init_wrapper(void) { OPENSSL_init(); return 0; }
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# ifdef _WIN64
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# pragma section(".CRT$XCU",read)
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__declspec(allocate(".CRT$XCU"))
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# else
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# pragma data_seg(".CRT$XCU")
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# endif
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static int (*p)(void) = init_wrapper;
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/* This results in pointer to init to appear in .CRT segment,
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* which is traversed by Visual C run-time initialization code.
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* This applies to both Win32 and [all flavors of] Win64. */
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# pragma data_seg()
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#elif defined(__SUNPRO_C)
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void OPENSSL_init(void);
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# pragma init(OPENSSL_init)
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/* This results in a call to init to appear in .init segment. */
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#elif defined(__DECC) && (defined(__VMS) || defined(VMS))
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void OPENSSL_init(void);
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# pragma __nostandard
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globaldef { "LIB$INITIALIZ" } readonly _align (LONGWORD)
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int spare[8] = {0};
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globaldef { "LIB$INITIALIZE" } readonly _align (LONGWORD)
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void (*x_OPENSSL_init)(void) = OPENSSL_init;
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/* Refer to LIB$INITIALIZE to ensure it exists in the image. */
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int lib$initialize();
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globaldef int (*lib_init_ref)() = lib$initialize;
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# pragma __standard
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#elif 0
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The rest has to be taken care of through command line:
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-Wl,-init,OPENSSL_init on OSF1 and IRIX
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-Wl,+init,OPENSSL_init on HP-UX
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-Wl,-binitfini:OPENSSL_init on AIX
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On ELF platforms this results in a call to OPENSSL_init to appear in
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.init segment...
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#endif
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/* Perform any essential OpenSSL initialization operations.
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* Currently only sets FIPS callbacks
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*/
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void OPENSSL_init(void)
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{
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static int done = 0;
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if (done)
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return;
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done = 1;
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#ifdef OPENSSL_FIPS
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FIPS_set_locking_callbacks(CRYPTO_lock, CRYPTO_add_lock);
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FIPS_set_error_callbacks(ERR_put_error, ERR_add_error_vdata);
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FIPS_set_malloc_callbacks(CRYPTO_malloc, CRYPTO_free);
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#endif
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#if 0
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fprintf(stderr, "Called OPENSSL_init\n");
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#endif
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}
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