static bool cfs_is_function_supported(struct usb_function *func)
{
- bool res;
- int ret;
+ char buf[PATH_MAX];
+
+ if (func->is_functionfs) {
+ /* functionfs must have a service */
+ if (!func->service)
+ return false;
- if (!func->is_functionfs) {
- ret = usbg_lookup_function_type(func->name);
- res = ret >= 0;
+ snprintf(buf, sizeof(buf), "/usr/lib/systemd/system/%s.socket", func->service);
+ if (access(buf, F_OK))
+ return false;
} else {
- /* TODO: Check if socket is available */
- res = true;
+ if (usbg_lookup_function_type(func->name) < 0)
+ return false;
}
- return res;
+ return true;
}
static bool cfs_is_gadget_supported(struct usb_gadget *gadget)
{
int i, j;
+ struct usb_configuration *config;
+
+ if (!gadget || !gadget->configs || !gadget->configs[0] || !gadget->funcs)
+ return false;
- if (!gadget || !gadget->configs || !gadget->funcs)
+ if (!gadget->attrs.idVendor || !gadget->attrs.idProduct || !gadget->attrs.bcdDevice)
return false;
/* only strings in US_en are allowed */
if (!gadget->strs.manufacturer || !gadget->strs.product || !gadget->strs.serial)
return false;
- for (j = 0; gadget->configs && gadget->configs[j]; ++j) {
- struct usb_configuration *config = gadget->configs[j];
+ for (j = 0; gadget->configs[j]; ++j) {
+ config = gadget->configs[j];
if (!config->funcs)
return false;
return false;
}
- if (j == 0)
- return false;
-
return true;
}
if (!usb || !gadget)
return -EINVAL;
+ /* Verify the gadget and check if function is supported */
if (!cfs_is_gadget_supported(gadget))
return -ENOTSUP;
if (ret)
return ret;
- for (i = 0; gadget->configs && gadget->configs[i]; ++i) {
+ for (i = 0; gadget->configs[i]; ++i) {
ret = cfs_set_gadget_config(cfs_client, i + 1, gadget->configs[i]);
if (ret)
return ret;
static bool legacy_is_function_supported(struct usb_function *func)
{
- /*
- * TODO
- * Instead of only checking whether we know this function
- * we should also parse sysfs to check if it is build into
- * slp-gadget.
- */
- if (find_usb_function_by_name(func->name))
- return true;
- else
+ char buf[PATH_MAX];
+
+ snprintf (buf, sizeof(buf), "%s/f_%s", LEGACY_ROOTPATH, func->name);
+ if (access(buf, F_OK))
return false;
+
+ return true;
}
static bool legacy_is_gadget_supported(struct usb_gadget *gadget)
{
int i, j;
+ struct usb_configuration *config;
- if (!gadget || !gadget->configs || !gadget->funcs)
+ if (!gadget || !gadget->configs || !gadget->configs[0] || !gadget->funcs)
return false;
+ if (!gadget->attrs.idVendor || !gadget->attrs.idProduct || !gadget->attrs.bcdDevice)
+ return false;
+
/* only strings in US_en are allowed */
if (gadget->strs.lang_code != DEFAULT_LANG)
return false;
return false;
for (j = 0; gadget->configs[j]; ++j) {
- struct usb_configuration *config = gadget->configs[j];
+ config = gadget->configs[j];
if (!config->funcs)
return false;
return false;
}
- if (j == 0 || j > 2)
- return false;
-
return true;
}
/* TODO. Maybe move this to sys ? */
static int legacy_set_int_hex(char *path, int val)
{
- char buf[MAX_GADGET_STR_LEN];
int r;
+ char buf[MAX_GADGET_STR_LEN];
if (!path)
return -EINVAL;
if (!usb || !gadget)
return -EINVAL;
+ /* Verify the gadget and check if function is supported */
if (!legacy_is_gadget_supported(gadget))
return -ENOTSUP;