static void _unload_lib ( void * libhandle )
{
#ifdef PEGASUS_PLATFORM_ZOS_ZSERIES_IBM
dllfree( (dllhandle*) libhandle );
#else
dlclose ( libhandle );
#endif
}
/*!
The function tries to load "lib<id>.so" looking for an entry point
"<id>_InitCommLayer". The latter one is called to obtain a provider_comm
structure including the function pointer table for MI calls towards
remote providers.
\param id the name of the comm-layer for which the library has to be loaded.
\param broker broker handle as passed to the init function.
\param ctx context as passed to the init function.
\return pointer to the provider_comm structure from the comm-layer, or NULL.
*/
static provider_comm * load_comm_library ( const char * id,
CONST CMPIBroker * broker,
CONST CMPIContext * ctx )
{
void * hLibrary;
CMPIStatus rc = {CMPI_RC_OK, NULL};
TRACE_VERBOSE(("entered function."));
TRACE_NORMAL(("loading comm-layer library: lib%s.so", id));
hLibrary = _load_lib ( id );
if ( hLibrary != NULL ) {
char function[255];
INIT_COMM_LAYER fp;
sprintf ( function, "%s_InitCommLayer", id );
#ifdef PEGASUS_PLATFORM_ZOS_ZSERIES_IBM
fp = (INIT_COMM_LAYER) dllqueryfn ( (dllhandle *) hLibrary, function );
#else
fp = (INIT_COMM_LAYER) dlsym ( hLibrary, function );
#endif
if ( fp != NULL ) {
provider_comm * result = fp ( broker, ctx );
result->id = strdup ( id );
result->handle = hLibrary;
TRACE_INFO(("comm-layer successfully initialized."));
TRACE_VERBOSE(("leaving function."));
return result;
}
#ifdef PEGASUS_PLATFORM_ZOS_ZSERIES_IBM
dllfree ( (dllhandle*) hLibrary );
#else
dlclose ( hLibrary );
#endif
}
#ifdef PEGASUS_PLATFORM_ZOS_ZSERIES_IBM
error_at_line ( 0, errno, __FILE__, __LINE__,
"Unable to load/init communication-layer library.");
#else
error_at_line ( 0, 0, __FILE__, __LINE__,
"Unable to load/init communication-layer library: %s",
dlerror () );
#endif
TRACE_VERBOSE(("leaving function."));
return NULL;
}
static apr_status_t dso_cleanup(void *thedso)
{
apr_dso_handle_t *dso = thedso;
int rc;
if (dso->handle == 0)
return APR_SUCCESS;
rc = dllfree(dso->handle);
if (rc == 0) {
dso->handle = 0;
return APR_SUCCESS;
}
dso->failing_errno = errno;
return errno;
}
void __wrap_free( void* pPtr )
{
dllfree(pPtr);
}
