efivars: allow plus in the entry name

Closes #12572.

diff --git a/src/shared/efivars.c b/src/shared/efivars.c
index 1bd8835633c2d31202ff53d080e8be56b2bb9a67..f16c2db739625598add525dd43034fcee5589095 100644 (file)
--- a/src/shared/efivars.c
+++ b/src/shared/efivars.c
@@ -909,7 +909,7 @@ 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 "+-_.");
 }
 
 char *efi_tilt_backslashes(char *s) {