grub2/0194-Fix-savedefault-with-blscfg.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Fritz Elfert <fritz@fritz-elfert.de>
Date: Sun, 12 Jan 2020 22:07:52 +0100
Subject: [PATCH] Fix savedefault with blscfg

The GRUB_SAVEDEFAULT option was ignored on a BLS configuration. Fix it by
making the menu entries populated from the BLS files to call savedefault
if a save_default environment variable has been set to "true".

This variable is set by grub2-mkconfig to the value in GRUB_SAVEDEFAULT.
---
 grub-core/commands/blscfg.c | 5 ++++-
 util/grub.d/10_linux.in     | 4 ++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/grub-core/commands/blscfg.c b/grub-core/commands/blscfg.c
index 8c6dd91be10..f2c1fd0733d 100644
--- a/grub-core/commands/blscfg.c
+++ b/grub-core/commands/blscfg.c
@@ -821,11 +821,14 @@ static void create_entry (struct bls_entry *entry)
       tmp = grub_stpcpy (tmp, "\n");
     }
 
-  src = grub_xasprintf ("load_video\n"
+  const char *sdval = grub_env_get("save_default");
+  bool savedefault = ((NULL != sdval) && (grub_strcmp(sdval, "true") == 0));
+  src = grub_xasprintf ("%sload_video\n"
 			"set gfxpayload=keep\n"
 			"insmod gzio\n"
 			"linux %s%s%s%s\n"
 			"%s",
+			savedefault ? "savedefault\n" : "",
 			GRUB_BOOT_DEVICE, clinux, options ? " " : "", options ? options : "",
 			initrd ? initrd : "");
 
diff --git a/util/grub.d/10_linux.in b/util/grub.d/10_linux.in
index 9e015c2c134..d5319300e04 100644
--- a/util/grub.d/10_linux.in
+++ b/util/grub.d/10_linux.in
@@ -138,6 +138,10 @@ EOF
       if [ -n "${GRUB_EARLY_INITRD_LINUX_CUSTOM}" ]; then
           ${grub_editenv} - set early_initrd="${GRUB_EARLY_INITRD_LINUX_CUSTOM}"
       fi
+
+      if [ -n "${GRUB_SAVEDEFAULT}" ]; then
+          ${grub_editenv} - set save_default="${GRUB_SAVEDEFAULT}"
+      fi
   fi
 
   exit 0