From 796d0f6fd2932fd7c009f4517133b1a9c39501e5 Mon Sep 17 00:00:00 2001
From: Coiby Xu <coxu@redhat.com>
Date: Tue, 16 Nov 2021 12:23:02 +0800
Subject: [PATCH] provide kdumpctl get-default-crashkernel for
 kdump_anaconda_addon and RPM scriptlet

Provide "kdumpctl get-default-crashkernel" for kdump_anaconda_addon
so crashkernel.default isn't needed.

When fadump is on, kdump_anaconda_addon would need to specify the dump
mode, i.e. "kdumpctl get-default-crashkernel fadump".

This interface would also be used by RPM scriptlet [1] to fetch default
crashkernel value.

[1] https://docs.fedoraproject.org/en-US/packaging-guidelines/Scriptlets/

Reviewed-by: Pingfan Liu <piliu@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
---
 kdumpctl | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/kdumpctl b/kdumpctl
index ed2b963..48aca00 100755
--- a/kdumpctl
+++ b/kdumpctl
@@ -1273,6 +1273,13 @@ do_estimate()
 	fi
 }
 
+get_default_crashkernel()
+{
+	local _dump_mode=$1
+
+	kdump_get_arch_recommend_crashkernel "$_dump_mode"
+}
+
 reset_crashkernel()
 {
 	local kernel=$1 entry crashkernel_default
@@ -1361,6 +1368,9 @@ main()
 	estimate)
 		do_estimate
 		;;
+	get-default-crashkernel)
+		get_default_crashkernel "$2"
+		;;
 	reset-crashkernel)
 		reset_crashkernel "$2"
 		;;