From 327969237080aaf0c2303943cb9df6dcf96f1566 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Fri, 16 Nov 2018 18:55:51 +0100
Subject: [PATCH] efivars: extend character set that may be used in boot loader
 entry ids a bit

See https://github.com/systemd/systemd/pull/10495#discussion_r233992570
---
 src/shared/efivars.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/shared/efivars.c b/src/shared/efivars.c
index 26f905bfaa..caae7b9138 100644
--- a/src/shared/efivars.c
+++ b/src/shared/efivars.c
@@ -796,7 +796,7 @@ bool efi_loader_entry_name_valid(const char *s) {
         if (strlen(s) > FILENAME_MAX) /* Make sure entry names fit in filenames */
                 return false;
 
-        return in_charset(s, ALPHANUMERICAL "-");
+        return in_charset(s, ALPHANUMERICAL "-_.");
 }
 
 int efi_loader_get_entries(char ***ret) {