From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Mon, 26 Nov 2018 10:06:42 +0100 Subject: [PATCH] Make the menu entry users option argument to be optional The --users option is used to restrict the access to specific menu entries only to a set of users. But the option requires an argument to either be a constant or a variable that has been set. So for example the following: menuentry "May be run by superusers or users in $users" --users $users { linux /vmlinuz } Would fail if $users is not defined and grub would discard the menu entry. Instead, allow the --users option to have an optional argument and ignore the option if the argument was not set. Related: rhbz#1652434 Signed-off-by: Javier Martinez Canillas --- grub-core/commands/menuentry.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/grub-core/commands/menuentry.c b/grub-core/commands/menuentry.c index b194123eb..b175a1b43 100644 --- a/grub-core/commands/menuentry.c +++ b/grub-core/commands/menuentry.c @@ -29,7 +29,7 @@ static const struct grub_arg_option options[] = { {"class", 1, GRUB_ARG_OPTION_REPEATABLE, N_("Menu entry type."), N_("STRING"), ARG_TYPE_STRING}, - {"users", 2, 0, + {"users", 2, GRUB_ARG_OPTION_OPTIONAL, N_("List of users allowed to boot this entry."), N_("USERNAME[,USERNAME]"), ARG_TYPE_STRING}, {"hotkey", 3, 0, @@ -281,7 +281,7 @@ grub_cmd_menuentry (grub_extcmd_context_t ctxt, int argc, char **args) if (! ctxt->state[3].set && ! ctxt->script) return grub_error (GRUB_ERR_BAD_ARGUMENT, "no menuentry definition"); - if (ctxt->state[1].set) + if (ctxt->state[1].set && ctxt->state[1].arg) users = ctxt->state[1].arg; else if (ctxt->state[5].set) users = NULL;