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/* sge_dlopen.c -- system-dependent dlopen
* Copyright (C) 2012 Dave Love, University of Liverpool <d.love@liv.ac.uk>
* The Contents of this file are made available subject to the terms of
* the Sun Industry Standards Source License Version 1.2
*
* Sun Industry Standards Source License Version 1.2
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.2 (the "License"); You may not use this file
* except in compliance with the License. You may obtain a copy of the
* License at http://gridengine.sunsource.net/Gridengine_SISSL_license.html
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*/
#include <stdio.h>
#include <string.h>
#include <sge_dlopen.h>
/****** uti/sge_shlib_ext ***************************************
*
* NAME
* sge_shlib_ext -- return system-dependent shared librray extension
*
* SYNOPSIS
* #include <uti/sge_dlopen.h>
* const char *sge_shlib_ext()
*
* FUNCTION
* Return shared library extension for the system, e.g. ".so".
*
* RESULT
* Library extension.
*****************************************************************/
const char *sge_shlib_ext(void)
{
#if __hpux
return ".sl";
#elif __APPLE__
return ".dylib";
#elif __CYGWIN__
return ".dll";
#else
return ".so";
#endif
}
/****** uti/sge_dlopen ***************************************
*
* NAME
* sge_dlopen -- interface to dlopen
*
* SYNOPSIS
* #include <uti/sge_dlopen.h>
* void *sge_dlopen(const char *libbase, const char *libversion)
*
* FUNCTION
* Call dlopen on a shared library name in a system-dependent way.
* Flags RTLD_NOW and RTLD_GLOBAL are used, along with RTLD_NODELETE,
* if it is defined.
*
* INPUTS
* libbase - Name of shared library. A system-dependent extension
* is appended if it doesn't have one.
* libversion - Version string appended to the shared library name
* if non-NULL. Currently only used for ELF libraries.
*
* RESULT
* As for dlopen.
*****************************************************************/
void *sge_dlopen(const char *libbase, const char *libversion)
{
char lib[64];
const char *ext = "";
if (!strchr(libbase, '.'))
ext = sge_shlib_ext();
#if __APPLE__
snprintf(lib, sizeof lib, "%s%s", libbase, ext);
# ifdef RTLD_NODELETE /* Fixme: Is this required? */
return dlopen(lib, RTLD_NOW | RTLD_GLOBAL | RTLD_NODELETE);
# else
return dlopen(lib, RTLD_NOW | RTLD_GLOBAL);
# endif
#endif
if (libversion && strcmp(".so", ext) == 0)
snprintf(lib, sizeof lib, "%s%s%s", libbase, ext, libversion);
else
snprintf(lib, sizeof lib, "%s%s", libbase, ext);
return dlopen(lib, RTLD_LAZY
#ifdef RTLD_NODELETE
| RTLD_NODELETE
#endif
);
}
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