static void engine_unload(struct engine *engine, struct kr_module *module)
{
/* Unregister module */
auto_free char *name = strdup(module->name);
kr_module_unload(module);
/* Clear in Lua world */
if (name) {
lua_pushnil(engine->L);
lua_setglobal(engine->L, name);
}
free(module);
}
int kr_module_load(struct kr_module *module, const char *name, const char *path)
{
if (module == NULL || name == NULL) {
return kr_error(EINVAL);
}
/* Initialize, keep userdata */
void *data = module->data;
memset(module, 0, sizeof(struct kr_module));
module->data = data;
module->name = strdup(name);
if (module->name == NULL) {
return kr_error(ENOMEM);
}
/* Search for module library, use current namespace if not found. */
if (load_library(module, name, path) != 0) {
/* Expand HOME env variable, as the linker may not expand it. */
auto_free char *local_path = kr_strcatdup(2, getenv("HOME"), "/.local/lib/kdns_modules");
if (load_library(module, name, local_path) != 0) {
if (load_library(module, name, MODULEDIR) != 0) {
module->lib = RTLD_DEFAULT;
}
}
}
/* Try to load module ABI. */
int ret = load_sym_c(module, KR_MODULE_API);
if (ret == 0 && module->init) {
ret = module->init(module);
}
if (ret != 0) {
kr_module_unload(module);
}
return ret;
}
