From fdad7d9869a9637e6799cce222d386aed0b8781e Mon Sep 17 00:00:00 2001
From: Coiby Xu <coxu@redhat.com>
Date: Thu, 29 Sep 2022 12:35:00 +0800
Subject: [PATCH] Skip reading /etc/defaut/grub for s390x

Currently, updating kexec-tools on s390x gives the warning
sed: can't read /etc/default/grub: No such file or directory

This happens because s390x doesn't use GRUB and /etc/default/grub
doesn't exist. We need to skip both reading and writing to
/etc/default/grub.

Reported-by: Jie Li <jieli@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
---
 kdumpctl | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/kdumpctl b/kdumpctl
index 42c839b..d4d196f 100755
--- a/kdumpctl
+++ b/kdumpctl
@@ -1626,6 +1626,10 @@ update_crashkernel_in_grub_etc_default_after_update()
 		return
 	fi
 
+	if [[ $(uname -m) == s390x ]]; then
+		return
+	fi
+
 	_crashkernel=$(_read_kernel_arg_in_grub_etc_default crashkernel)
 
 	if [[ -z $_crashkernel ]]; then