Function sr_load_module

sr_module.c:263–326

returns 0 on success , <0 on error */

/* returns 0 on success , <0 on error */
int sr_load_module(char* path)
{
	void* handle;
	unsigned int moddlflags;
	char* error;
	const struct module_exports* exp;
	struct sr_module* t;

	/* load module */
	handle=dlopen(path, OPENSIPS_DLFLAGS); /* resolve all symbols now */
	if (handle==0){
		LM_ERR("could not open module <%s>: %s\n", path, dlerror() );
		goto error;
	}

	/* check for duplicates */
	for(t=modules;t; t=t->next){
		if (t->handle==handle){
			LM_WARN("attempting to load the same module twice (%s)\n", path);
			goto skip;
		}
	}

	/* import module interface */
	exp = (const struct module_exports*)dlsym(handle, DLSYM_PREFIX "exports");
	if ( (error =(char*)dlerror())!=0 ){
		LM_ERR("load_module: %s\n", error);
		goto error1;
	}
	/* version control */
	if (!version_control(exp, path)) {
		exit(1);
	}
	if(exp->dlflags!=DEFAULT_DLFLAGS && exp->dlflags!=OPENSIPS_DLFLAGS) {
		moddlflags = exp->dlflags;
		dlclose(handle);
		LM_DBG("reloading module %s with flags %d\n", path, moddlflags);
		handle = dlopen(path, moddlflags);
		if (handle==0){
			LM_ERR("could not open module <%s>: %s\n", path, dlerror() );
			goto error;
		}
		exp = (const struct module_exports*)dlsym(handle, DLSYM_PREFIX "exports");
		if ( (error =(char*)dlerror())!=0 ){
			LM_ERR("failed to load module : %s\n", error);
			goto error1;
		}
	}

	if (exp->load_f && exp->load_f() < 0) {
		LM_ERR("could not initialize module %s\n", path);
		goto error1;
	}

	/* launch register */
	if (register_module(exp, path, handle)<0) goto error1;
	return 0;