int usbip_vhci_driver_open(void)
{
udev_context = udev_new();
if (!udev_context) {
err("udev_new failed");
return -1;
}
vhci_driver = calloc(1, sizeof(struct usbip_vhci_driver));
/* will be freed in usbip_driver_close() */
vhci_driver->hc_device =
udev_device_new_from_subsystem_sysname(udev_context,
USBIP_VHCI_BUS_TYPE,
USBIP_VHCI_DEVICE_NAME);
if (!vhci_driver->hc_device) {
err("udev_device_new_from_subsystem_sysname failed");
goto err;
}
vhci_driver->nports = get_nports();
dbg("available ports: %d", vhci_driver->nports);
if (vhci_driver->nports <= 0) {
err("no available ports");
goto err;
} else if (vhci_driver->nports > MAXNPORT) {
err("port number exceeds %d", MAXNPORT);
goto err;
}
vhci_driver->ncontrollers = get_ncontrollers();
dbg("available controllers: %d", vhci_driver->ncontrollers);
if (vhci_driver->ncontrollers <=0) {
err("no available usb controllers");
goto err;
}
if (refresh_imported_device_list())
goto err;
return 0;
err:
udev_device_unref(vhci_driver->hc_device);
if (vhci_driver)
free(vhci_driver);
vhci_driver = NULL;
udev_unref(udev_context);
return -1;
}
int usbip_vhci_driver_open(void)
{
int nports;
struct udev_device *hc_device;
udev_context = udev_new();
if (!udev_context) {
err("udev_new failed");
return -1;
}
/* will be freed in usbip_driver_close() */
hc_device =
udev_device_new_from_subsystem_sysname(udev_context,
USBIP_VHCI_BUS_TYPE,
USBIP_VHCI_DEVICE_NAME);
if (!hc_device) {
err("udev_device_new_from_subsystem_sysname failed");
goto err;
}
nports = get_nports(hc_device);
if (nports <= 0) {
err("no available ports");
goto err;
}
dbg("available ports: %d", nports);
vhci_driver = calloc(1, sizeof(struct usbip_vhci_driver) +
nports * sizeof(struct usbip_imported_device));
if (!vhci_driver) {
err("vhci_driver allocation failed");
goto err;
}
vhci_driver->nports = nports;
vhci_driver->hc_device = hc_device;
vhci_driver->ncontrollers = get_ncontrollers();
dbg("available controllers: %d", vhci_driver->ncontrollers);
if (vhci_driver->ncontrollers <=0) {
err("no available usb controllers");
goto err;
}
if (refresh_imported_device_list())
goto err;
return 0;
err:
udev_device_unref(hc_device);
if (vhci_driver)
free(vhci_driver);
vhci_driver = NULL;
udev_unref(udev_context);
return -1;
}