1999-05-15 21:24:16 +08:00
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/* e_os2.h */
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2001-02-20 00:06:34 +08:00
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/* ====================================================================
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* Copyright (c) 1998-2000 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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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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1999-05-15 21:24:16 +08:00
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2001-02-22 21:59:36 +08:00
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#include <openssl/opensslconf.h>
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1999-05-15 21:24:16 +08:00
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#ifndef HEADER_E_OS2_H
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#define HEADER_E_OS2_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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2001-02-20 00:06:34 +08:00
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/******************************************************************************
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* Detect operating systems. This probably needs completing.
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* The result is that at least one OPENSSL_SYS_os macro should be defined.
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* However, if none is defined, Unix is assumed.
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**/
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#define OPENSSL_SYS_UNIX
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/* ----------------------- Macintosh, before MacOS X ----------------------- */
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#if defined(__MWERKS__) && defined(macintosh) || defined(OPENSSL_SYSNAME_MAC)
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# undef OPENSSL_SYS_UNIX
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# define OPENSSL_SYS_MACINTOSH_CLASSIC
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#endif
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/* ---------------------- Microsoft operating systems ---------------------- */
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/* The 16 bit environments are pretty straightforward */
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#if defined(OPENSSL_SYSNAME_WIN16) || defined(OPENSSL_SYSNAME_MSDOS)
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# undef OPENSSL_SYS_UNIX
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# define OPENSSL_SYS_MSDOS
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#endif
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#if defined(OPENSSL_SYSNAME_WIN16)
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# undef OPENSSL_SYS_UNIX
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# define OPENSSL_SYS_WIN16
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#endif
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/* For 32 bit environment, there seems to be the CygWin environment and then
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all the others that try to do the same thing Microsoft does... */
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2002-06-14 05:44:23 +08:00
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#if defined(OPENSSL_SYSNAME_UWIN)
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2001-02-20 00:06:34 +08:00
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# undef OPENSSL_SYS_UNIX
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2002-06-14 05:44:23 +08:00
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# define OPENSSL_SYS_WIN32_UWIN
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2001-02-20 00:06:34 +08:00
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#else
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2002-06-14 05:44:23 +08:00
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# if defined(__CYGWIN32__) || defined(OPENSSL_SYSNAME_CYGWIN32)
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2001-02-20 00:06:34 +08:00
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# undef OPENSSL_SYS_UNIX
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2002-06-14 05:44:23 +08:00
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# define OPENSSL_SYS_WIN32_CYGWIN
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# else
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# if defined(_WIN32) || defined(OPENSSL_SYSNAME_WIN32)
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# undef OPENSSL_SYS_UNIX
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# define OPENSSL_SYS_WIN32
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# endif
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# if defined(OPENSSL_SYSNAME_WINNT)
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# undef OPENSSL_SYS_UNIX
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# define OPENSSL_SYS_WINNT
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# endif
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2001-02-20 00:06:34 +08:00
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# endif
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#endif
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/* Anything that tries to look like Microsoft is "Windows" */
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#if defined(OPENSSL_SYS_WIN16) || defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WINNT)
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# undef OPENSSL_SYS_UNIX
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# define OPENSSL_SYS_WINDOWS
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2001-02-22 21:59:36 +08:00
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# ifndef OPENSSL_SYS_MSDOS
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# define OPENSSL_SYS_MSDOS
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# endif
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2001-02-20 00:06:34 +08:00
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#endif
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2001-03-05 21:45:34 +08:00
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/* DLL settings. This part is a bit tough, because it's up to the application
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implementor how he or she will link the application, so it requires some
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macro to be used. */
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#ifdef OPENSSL_SYS_WINDOWS
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# ifndef OPENSSL_OPT_WINDLL
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# if defined(_WINDLL) /* This is used when building OpenSSL to indicate that
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DLL linkage should be used */
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# define OPENSSL_OPT_WINDLL
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# endif
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# endif
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#endif
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2001-02-20 00:06:34 +08:00
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/* -------------------------------- OpenVMS -------------------------------- */
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#if defined(__VMS) || defined(VMS) || defined(OPENSSL_SYSNAME_VMS)
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# undef OPENSSL_SYS_UNIX
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# define OPENSSL_SYS_VMS
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# if defined(__DECC)
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# define OPENSSL_SYS_VMS_DECC
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2002-04-06 19:37:18 +08:00
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# elif defined(__DECCXX)
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# define OPENSSL_SYS_VMS_DECC
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# define OPENSSL_SYS_VMS_DECCXX
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2001-02-20 00:06:34 +08:00
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# else
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# define OPENSSL_SYS_VMS_NODECC
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# endif
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#endif
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2001-07-02 06:39:46 +08:00
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/* --------------------------------- OS/2 ---------------------------------- */
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#if defined(__EMX__) || defined(__OS2__)
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# undef OPENSSL_SYS_UNIX
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# define OPENSSL_SYS_OS2
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#endif
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2001-02-20 00:06:34 +08:00
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/* --------------------------------- Unix ---------------------------------- */
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#ifdef OPENSSL_SYS_UNIX
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2001-09-27 23:41:34 +08:00
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# if defined(linux) || defined(__linux__) || defined(OPENSSL_SYSNAME_LINUX)
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2001-02-20 00:06:34 +08:00
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# define OPENSSL_SYS_LINUX
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# endif
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# ifdef OPENSSL_SYSNAME_MPE
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# define OPENSSL_SYS_MPE
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# endif
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# ifdef OPENSSL_SYSNAME_SNI
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# define OPENSSL_SYS_SNI
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# endif
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# ifdef OPENSSL_SYSNAME_ULTRASPARC
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# define OPENSSL_SYS_ULTRASPARC
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# endif
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# ifdef OPENSSL_SYSNAME_NEWS4
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# define OPENSSL_SYS_NEWS4
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# endif
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# ifdef OPENSSL_SYSNAME_MACOSX
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# define OPENSSL_SYS_MACOSX
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# endif
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# if defined(_CRAY) || defined(OPENSSL_SYSNAME_CRAY)
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# define OPENSSL_SYS_CRAY
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# endif
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# if defined(_AIX) || defined(OPENSSL_SYSNAME_AIX)
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# define OPENSSL_SYS_AIX
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# endif
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#endif
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/**
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* That's it for OS-specific stuff
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*****************************************************************************/
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/* Specials for I/O an exit */
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#ifdef OPENSSL_SYS_MSDOS
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1999-06-09 21:23:38 +08:00
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# define OPENSSL_UNISTD_IO <io.h>
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# define OPENSSL_DECLARE_EXIT extern void exit(int);
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#else
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# define OPENSSL_UNISTD_IO OPENSSL_UNISTD
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# define OPENSSL_DECLARE_EXIT /* declared in unistd.h */
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#endif
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2000-12-31 08:15:57 +08:00
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/* Definitions of OPENSSL_GLOBAL and OPENSSL_EXTERN, to define and declare
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certain global symbols that, with some compilers under VMS, have to be
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defined and declared explicitely with globaldef and globalref.
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Definitions of OPENSSL_EXPORT and OPENSSL_IMPORT, to define and declare
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DLL exports and imports for compilers under Win32. These are a little
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more complicated to use. Basically, for any library that exports some
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global variables, the following code must be present in the header file
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that declares them, before OPENSSL_EXTERN is used:
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#ifdef SOME_BUILD_FLAG_MACRO
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# undef OPENSSL_EXTERN
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# define OPENSSL_EXTERN OPENSSL_EXPORT
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#endif
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The default is to have OPENSSL_EXPORT, OPENSSL_IMPORT and OPENSSL_GLOBAL
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have some generally sensible values, and for OPENSSL_EXTERN to have the
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value OPENSSL_IMPORT.
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*/
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1999-05-15 21:24:16 +08:00
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2001-02-20 00:06:34 +08:00
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#if defined(OPENSSL_SYS_VMS_NODECC)
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2000-12-31 08:15:57 +08:00
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# define OPENSSL_EXPORT globalref
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# define OPENSSL_IMPORT globalref
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1999-05-15 21:24:16 +08:00
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# define OPENSSL_GLOBAL globaldef
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2001-03-05 21:45:34 +08:00
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#elif defined(OPENSSL_SYS_WINDOWS) && defined(OPENSSL_OPT_WINDLL)
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2000-12-31 08:15:57 +08:00
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# define OPENSSL_EXPORT extern _declspec(dllexport)
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# define OPENSSL_IMPORT extern _declspec(dllimport)
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# define OPENSSL_GLOBAL
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1999-05-15 21:24:16 +08:00
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#else
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2000-12-31 08:15:57 +08:00
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# define OPENSSL_EXPORT extern
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# define OPENSSL_IMPORT extern
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1999-05-15 21:24:16 +08:00
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# define OPENSSL_GLOBAL
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#endif
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2000-12-31 08:15:57 +08:00
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#define OPENSSL_EXTERN OPENSSL_IMPORT
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1999-05-15 21:24:16 +08:00
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Introduce the possibility to access global variables through
functions on platform were that's the best way to handle exporting
global variables in shared libraries. To enable this functionality,
one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
"OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
is normally done by Configure or something similar).
To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
in the source file (foo.c) like this:
OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
OPENSSL_IMPLEMENT_GLOBAL(double,bar);
To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
OPENSSL_DECLARE_GLOBAL(int,foo);
#define foo OPENSSL_GLOBAL_REF(foo)
OPENSSL_DECLARE_GLOBAL(double,bar);
#define bar OPENSSL_GLOBAL_REF(bar)
The #defines are very important, and therefore so is including the
header file everywere where the defined globals are used.
The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
of ASN.1 items, but that structure is a bt different.
The largest change is in util/mkdef.pl which has been enhanced with
better and easier to understand logic to choose which symbols should
go into the Windows .def files as well as a number of fixes and code
cleanup (among others, algorithm keywords are now sorted
lexicographically to avoid constant rewrites).
2001-03-02 18:38:19 +08:00
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/* Macros to allow global variables to be reached through function calls when
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required (if a shared library version requvres it, for example.
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The way it's done allows definitions like this:
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// in foobar.c
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OPENSSL_IMPLEMENT_GLOBAL(int,foobar) = 0;
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// in foobar.h
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OPENSSL_DECLARE_GLOBAL(int,foobar);
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#define foobar OPENSSL_GLOBAL_REF(foobar)
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*/
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#ifdef OPENSSL_EXPORT_VAR_AS_FUNCTION
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2001-05-14 01:55:30 +08:00
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# define OPENSSL_IMPLEMENT_GLOBAL(type,name) static type _hide_##name; \
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2001-05-13 07:57:41 +08:00
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type *_shadow_##name(void) { return &_hide_##name; } \
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Introduce the possibility to access global variables through
functions on platform were that's the best way to handle exporting
global variables in shared libraries. To enable this functionality,
one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
"OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
is normally done by Configure or something similar).
To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
in the source file (foo.c) like this:
OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
OPENSSL_IMPLEMENT_GLOBAL(double,bar);
To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
OPENSSL_DECLARE_GLOBAL(int,foo);
#define foo OPENSSL_GLOBAL_REF(foo)
OPENSSL_DECLARE_GLOBAL(double,bar);
#define bar OPENSSL_GLOBAL_REF(bar)
The #defines are very important, and therefore so is including the
header file everywere where the defined globals are used.
The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
of ASN.1 items, but that structure is a bt different.
The largest change is in util/mkdef.pl which has been enhanced with
better and easier to understand logic to choose which symbols should
go into the Windows .def files as well as a number of fixes and code
cleanup (among others, algorithm keywords are now sorted
lexicographically to avoid constant rewrites).
2001-03-02 18:38:19 +08:00
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static type _hide_##name
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# define OPENSSL_DECLARE_GLOBAL(type,name) type *_shadow_##name(void)
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# define OPENSSL_GLOBAL_REF(name) (*(_shadow_##name()))
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#else
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# define OPENSSL_IMPLEMENT_GLOBAL(type,name) OPENSSL_GLOBAL type _shadow_##name
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# define OPENSSL_DECLARE_GLOBAL(type,name) OPENSSL_EXPORT type _shadow_##name
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# define OPENSSL_GLOBAL_REF(name) _shadow_##name
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#endif
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1999-05-15 21:24:16 +08:00
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#ifdef __cplusplus
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}
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#endif
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#endif
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