From 68b42a2404b00846486c55b25bfd96e9323b9391 Mon Sep 17 00:00:00 2001
From: illiliti <illiliti@protonmail.com>
Date: Wed, 11 Nov 2020 20:49:20 +0300
Subject: [PATCH] implement udev_device_get_seqnum. closes #7

---
 udev.h        |  1 +
 udev_device.c | 13 +++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/udev.h b/udev.h
index 91b520b..51ba317 100644
--- a/udev.h
+++ b/udev.h
@@ -28,6 +28,7 @@ const char *udev_device_get_sysnum(struct udev_device *udev_device);
 const char *udev_device_get_devpath(struct udev_device *udev_device);
 const char *udev_device_get_devnode(struct udev_device *udev_device);
 dev_t udev_device_get_devnum(struct udev_device *udev_device);
+unsigned long long udev_device_get_seqnum(struct udev_device *udev_device);
 const char *udev_device_get_devtype(struct udev_device *udev_device);
 const char *udev_device_get_subsystem(struct udev_device *udev_device);
 const char *udev_device_get_driver(struct udev_device *udev_device);
diff --git a/udev_device.c b/udev_device.c
index bd03d40..e189659 100644
--- a/udev_device.c
+++ b/udev_device.c
@@ -44,6 +44,19 @@ const char *udev_device_get_devnode(struct udev_device *udev_device)
     return udev_device_get_property_value(udev_device, "DEVNAME");
 }
 
+unsigned long long udev_device_get_seqnum(struct udev_device *udev_device)
+{
+    const char *seqnum;
+
+    seqnum = udev_device_get_property_value(udev_device, "SEQNUM");
+
+    if (!seqnum) {
+        return 0;
+    }
+
+    return strtoull(seqnum, NULL, 10);
+}
+
 dev_t udev_device_get_devnum(struct udev_device *udev_device)
 {
     const char *major, *minor;