static char *
get_first_module_on_dir(const char *dir_name)
{
char *result = NULL;
char path[PATH_MAX], install_rootdir[PATH_MAX];
struct stat st;
int r;
r = sol_util_get_rootdir(install_rootdir, sizeof(install_rootdir));
SOL_INT_CHECK(r, >= (int)sizeof(install_rootdir), NULL);
SOL_INT_CHECK(r, < 0, NULL);
r = snprintf(path, sizeof(path), "%s%s", install_rootdir, dir_name);
SOL_INT_CHECK(r, >= (int)sizeof(path), NULL);
SOL_INT_CHECK(r, < 0, NULL);
if (stat(path, &st) || !S_ISDIR(st.st_mode)) {
SOL_DBG("Invalid update module dir: %s", path);
return NULL;
}
if (!sol_util_iterate_dir(path, iterate_dir_cb, &result))
return NULL;
return result;
}
static bool
_load_mux(const char *name)
{
#ifdef ENABLE_DYNAMIC_MODULES
int r;
void *handle;
char path[PATH_MAX], install_rootdir[PATH_MAX] = { 0 };
const struct sol_pin_mux *p_sym;
r = sol_util_get_rootdir(install_rootdir, sizeof(install_rootdir));
SOL_INT_CHECK(r, >= (int)sizeof(install_rootdir), false);
r = snprintf(path, sizeof(path), "%s%s/%s.so", install_rootdir, PINMUXDIR, name);
SOL_INT_CHECK(r, >= (int)sizeof(path), false);
SOL_INT_CHECK(r, < 0, false);
handle = dlopen(path, RTLD_LAZY | RTLD_LOCAL | RTLD_NODELETE);
if (!handle) {
SOL_INF("Could not load platform pin multiplexer '%s': %s", path, dlerror());
return true; // Not find a mux isn't necessarily an error, so we are returning true here
}
p_sym = dlsym(handle, "SOL_PIN_MUX");
SOL_NULL_CHECK_MSG_GOTO(p_sym, error,
"Could not find symbol SOL_PIN_MUX in module '%s': %s", path, dlerror());
#ifndef SOL_NO_API_VERSION
if (p_sym->api_version != SOL_PIN_MUX_API_VERSION) {
SOL_WRN("Mux '%s' has incorrect api_version: %lu expected %lu", path, p_sym->api_version,
SOL_PIN_MUX_API_VERSION);
goto error;
}
#endif
if (dl_handle)
dlclose(dl_handle);
mux = p_sym;
dl_handle = handle;
SOL_INF("Loaded pin multiplexer '%s' from '%s'", mux->plat_name, path);
return true;
error:
dlclose(handle);
return false;
#else
return true;
#endif
}
