From 768fbf7f229dca1034bc8334bc92b8d646811d5a Mon Sep 17 00:00:00 2001
From: Faruk Kasumovic <fkasumovic@gmail.com>
Date: Mon, 31 Aug 2020 10:56:49 +0200
Subject: [PATCH] Add fetching of GUID in VDevTree

---
 zpool.c  | 6 ++++++
 zpool.go | 3 +++
 zpool.h  | 1 +
 3 files changed, 10 insertions(+)

diff --git a/zpool.c b/zpool.c
index df64295..9a0a48a 100644
--- a/zpool.c
+++ b/zpool.c
@@ -378,6 +378,12 @@ const char *get_vdev_type(nvlist_ptr nv) {
 	return value;
 }
 
+uint64_t get_vdev_guid(nvlist_ptr nv) {
+	uint64_t value = 0;
+	nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &value);
+	return value;
+}
+
 const vdev_stat_ptr get_vdev_stats(nvlist_ptr nv) {
 	vdev_stat_ptr vs = NULL;
 	uint_t count;
diff --git a/zpool.go b/zpool.go
index 5b3c784..54672d3 100644
--- a/zpool.go
+++ b/zpool.go
@@ -115,6 +115,7 @@ type VDevTree struct {
 	Spares   []VDevTree
 	L2Cache  []VDevTree
 	Logs     *VDevTree
+	GUID     uint64
 	Parity   uint
 	Path     string
 	Name     string
@@ -178,6 +179,8 @@ func poolGetConfig(name string, nv C.nvlist_ptr) (vdevs VDevTree, err error) {
 		return
 	}
 
+	vdevs.GUID = uint64(C.get_vdev_guid(nv))
+
 	// Fetch vdev state
 	if vs = C.get_vdev_stats(nv); vs == nil {
 		err = fmt.Errorf("Failed to fetch %s", C.ZPOOL_CONFIG_VDEV_STATS)
diff --git a/zpool.h b/zpool.h
index f37db38..3758e72 100644
--- a/zpool.h
+++ b/zpool.h
@@ -62,6 +62,7 @@ nvlist_t *nvlist_array_at(nvlist_t **a, uint_t i);
 int refresh_stats(zpool_list_t *pool);
 
 const char *get_vdev_type(nvlist_ptr nv);
+uint64_t get_vdev_guid(nvlist_ptr nv);
 const vdev_stat_ptr get_vdev_stats(nvlist_ptr nv);
 pool_scan_stat_ptr get_vdev_scan_stats(nvlist_t *nv);
 vdev_children_ptr get_vdev_children(nvlist_t *nv);