10_linux.in: restore existence check in get_sorted_bls

0215-10_linux.in-restore-existence-check-in-get_sorted_bl.patch

@@ -0,0 +1,36 @@
+From 0cff1b8b056f408c0dd9f8e5f8071ea9f6193c6e Mon Sep 17 00:00:00 2001
+From: Adam Williamson <awilliam@redhat.com>
+Date: Thu, 14 May 2020 17:52:53 -0700
+Subject: [PATCH 215/215] 10_linux.in: restore existence check in
+ `get_sorted_bls`
+
+This is necessary to handle `/boot/loader/entries` not existing
+at all (or possibly existing but being empty - not sure about
+that case). Without this check, this function gets pretty wacky
+and winds up returning the contents of the current working
+directory, which of course causes whatever called it to break.
+
+Resolves: rhbz#1836020
+
+Signed-off-by: Adam Williamson <awilliam@redhat.com>
+---
+ util/grub.d/10_linux.in | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/util/grub.d/10_linux.in b/util/grub.d/10_linux.in
+index 80299ecaf..519e2d9e6 100644
+--- a/util/grub.d/10_linux.in
++++ b/util/grub.d/10_linux.in
+@@ -141,6 +141,9 @@ get_sorted_bls()
+     local IFS=$'\n'
+ 
+     files=($(for bls in ${blsdir}/*.conf; do
++        if ! [[ -e "${bls}" ]] ; then
++            continue
++        fi
+         bls="${bls%.conf}"
+         bls="${bls##*/}"
+         echo "${bls}"
+-- 
+2.26.2
+

grub.patches

@@ -212,3 +212,4 @@ Patch0211: 0211-blscfg-Lookup-default_kernelopts-variable-as-fallbac.patch
 Patch0212: 0212-10_linux.in-fix-early-exit-due-error-when-reading-pe.patch
 Patch0213: 0213-envblk-Fix-buffer-overrun-when-attempting-to-shrink-.patch
 Patch0214: 0214-10_linux.in-Store-cmdline-in-BLS-snippets-instead-of.patch
+Patch0215: 0215-10_linux.in-restore-existence-check-in-get_sorted_bl.patch

grub2.spec

@@ -9,7 +9,7 @@
 Name:		grub2
 Epoch:		1
 Version:	2.04
-Release:	17%{?dist}
+Release:	18%{?dist}
 Summary:	Bootloader with support for Linux, Multiboot and more
 License:	GPLv3+
 URL:		http://www.gnu.org/software/grub/
@@ -504,6 +504,10 @@ rm -r /boot/grub2.tmp/ || :
 %endif
 
 %changelog
+* Thu May 14 2020 Adam Williamson <awilliam@redhat.com> - 2.04-18
+- 10_linux.in: restore existence check in `get_sorted_bls`
+  Resolves: rhbz#1836020
+
 * Wed May 13 2020 Javier Martinez Canillas <javierm@redhat.com> - 2.04-17
 - Store cmdline in BLS snippets instead of using a grubenv variable