X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udev_sysfs.c;h=f0666509eaca5b87614d4124eb5a5e0d014ff4c5;hp=fd7330a161760b00443d811762a05bc784de369f;hb=7e720bd4ad8257d81d273d98294ebbcc03ade9ba;hpb=1cec1c241600fc11121f9504bc9e95836c03bd9c;ds=sidebyside

diff --git a/udev_sysfs.c b/udev_sysfs.c
index fd7330a16..f0666509e 100644
--- a/udev_sysfs.c
+++ b/udev_sysfs.c
@@ -59,6 +59,23 @@ static const struct subsystem_file {
 	{ NULL, NULL }
 };
 
+dev_t get_devt(struct sysfs_class_device *class_dev)
+{
+	struct sysfs_attribute *attr = NULL;
+	unsigned int major, minor;
+
+	attr = sysfs_get_classdev_attr(class_dev, "dev");
+	if (attr == NULL)
+		return 0;
+	dbg("dev='%s'", attr->value);
+
+	if (sscanf(attr->value, "%u:%u", &major, &minor) != 2)
+		return 0;
+	dbg("found major=%d, minor=%d", major, minor);
+
+	return makedev(major, minor);
+}
+
 int subsystem_expect_no_dev(const char *subsystem)
 {
 	const struct subsystem_file *file;