libnvme/linux: allow /dev/ngX device as character device

Previously the nvmeX device name id and ns was not checked.
But currently those checked as if the device character or block.
Therefore add to check the ngX device name as the character device.

Signed-off-by: Tokunori Ikegami <[email protected]>

Author: ikegami-t

libnvme/src/nvme/linux.c

@@ -90,8 +90,12 @@ static int __nvme_transport_handle_open_direct(struct nvme_transport_handle *hdl
 	hdl->type = NVME_TRANSPORT_HANDLE_TYPE_DIRECT;
 
 	ret = sscanf(name, "nvme%dn%d", &id, &ns);
-	if (ret != 1 && ret != 2)
-		return -EINVAL;
+	if (ret != 1 && ret != 2) {
+		if (sscanf(name, "ng%dn%d", &id, &ns) != 2)
+			return -EINVAL;
+		ret = 1;
+	}
+
 	c = ret == 1;
 
 	ret = asprintf(&path, "%s/%s", "/dev", name);