dynamiclibraryposix.cpp

Pegasus is an open-source implementationof the DMTF CIM and WBEM standards. It is designed to be por

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#include "DynamicLibrary.h"

#if defined(PEGASUS_OS_OS400)
# include <fcntl.h>
# include <unistd.cleinc>
# include "OS400SystemState.h"  // OS400LoadDynamicLibrary, etc
#else
# include <dlfcn.h>
#endif

#if defined(PEGASUS_ZOS_SECURITY)
# include <sys/stat.h>
# include "DynamicLibraryzOS_inline.h"
#endif

PEGASUS_NAMESPACE_BEGIN

Boolean DynamicLibrary::_load()
{
    CString cstr = _fileName.getCString();

#if defined(PEGASUS_ZOS_SECURITY)
    if (!hasProgramControl(cstr))
    {
        return false;
    }
#endif

#if defined(PEGASUS_OS_ZOS)
    _handle = dlopen(cstr, RTLD_LAZY);
#elif defined(PEGASUS_OS_OS400)
    _handle = OS400_LoadDynamicLibrary((const char *)cstr);
#else
    _handle = dlopen(cstr, RTLD_NOW);
#endif

    if (_handle == 0)
    {
        // Record the load error message
#if defined(PEGASUS_OS_OS400)
        _loadErrorMessage = String(OS400_DynamicLoadError());
#else
        _loadErrorMessage = dlerror();
#endif
    }

    return isLoaded();
}

void DynamicLibrary::_unload()
{
#ifdef PEGASUS_OS_OS400
    OS400_UnloadDynamicLibrary(_handle);
#else
    dlclose(_handle);
#endif
}

DynamicLibrary::DynamicSymbolHandle DynamicLibrary::getSymbol(
    const String& symbolName)
{
    PEGASUS_ASSERT(isLoaded());

    CString cstr = symbolName.getCString();

#ifdef PEGASUS_OS_OS400
    DynamicSymbolHandle func = (DynamicSymbolHandle)
        OS400_LoadDynamicSymbol(_handle, (const char *)cstr);
#else
    DynamicSymbolHandle func =
        (DynamicSymbolHandle) dlsym(_handle, (const char *)cstr);
#endif

    return func;
}

PEGASUS_NAMESPACE_END