X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udev%2Flib%2Flibudev-device.c;h=8103c7fcc46448c5812a5a393afa8217c9b83d7f;hp=731230efd0143858bd9da1072d60696fdbd6fd46;hb=4c9dff47f696b1e6c89cc6e0a7ba683067927821;hpb=fb762bb928772f1923fef1e342d8ebca9bf7691f

diff --git a/udev/lib/libudev-device.c b/udev/lib/libudev-device.c
index 731230efd..8103c7fcc 100644
--- a/udev/lib/libudev-device.c
+++ b/udev/lib/libudev-device.c
@@ -216,6 +216,20 @@ struct udev_device *udev_device_new_from_syspath(struct udev *udev, const char *
 	return udev_device;
 }
 
+struct udev_device *udev_device_new_from_devnum(struct udev *udev, char type, dev_t devnum)
+{
+	char path[UTIL_PATH_SIZE];
+
+	snprintf(path, sizeof(path), "%s/dev/%s/%u:%u",
+		 udev_get_sys_path(udev),
+		 type == 'b' ? "block" : "char",
+		 major(devnum), minor(devnum));
+	if (util_resolve_sys_link(udev, path, sizeof(path)) < 0)
+		return NULL;
+
+	return udev_device_new_from_syspath(udev, path);
+}
+
 static struct udev_device *device_new_from_parent(struct udev_device *udev_device)
 {
 	struct udev_device *udev_device_parent = NULL;