|
 |
468bd4 |
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
|
468bd4 |
From: Javier Martinez Canillas <javierm@redhat.com>
|
|
|
468bd4 |
Date: Wed, 24 Feb 2021 15:03:26 +0100
|
|
|
468bd4 |
Subject: [PATCH] gdb: Restrict GDB access when locked down
|
|
|
468bd4 |
|
|
|
468bd4 |
The gdbstub* commands allow to start and control a GDB stub running on
|
|
|
468bd4 |
local host that can be used to connect from a remote debugger. Restrict
|
|
|
468bd4 |
this functionality when the GRUB is locked down.
|
|
|
468bd4 |
|
|
|
468bd4 |
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
|
|
|
468bd4 |
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
|
|
|
468bd4 |
---
|
|
|
468bd4 |
grub-core/gdb/gdb.c | 32 ++++++++++++++++++--------------
|
|
|
468bd4 |
1 file changed, 18 insertions(+), 14 deletions(-)
|
|
|
468bd4 |
|
|
|
468bd4 |
diff --git a/grub-core/gdb/gdb.c b/grub-core/gdb/gdb.c
|
|
|
09e3cc |
index 847a1e1e3..1818cb6f8 100644
|
|
|
468bd4 |
--- a/grub-core/gdb/gdb.c
|
|
|
468bd4 |
+++ b/grub-core/gdb/gdb.c
|
|
|
468bd4 |
@@ -75,20 +75,24 @@ static grub_command_t cmd, cmd_stop, cmd_break;
|
|
|
468bd4 |
GRUB_MOD_INIT (gdb)
|
|
|
468bd4 |
{
|
|
|
468bd4 |
grub_gdb_idtinit ();
|
|
|
468bd4 |
- cmd = grub_register_command ("gdbstub", grub_cmd_gdbstub,
|
|
|
468bd4 |
- N_("PORT"),
|
|
|
468bd4 |
- /* TRANSLATORS: GDB stub is a small part of
|
|
|
468bd4 |
- GDB functionality running on local host
|
|
|
468bd4 |
- which allows remote debugger to
|
|
|
468bd4 |
- connect to it. */
|
|
|
468bd4 |
- N_("Start GDB stub on given port"));
|
|
|
468bd4 |
- cmd_break = grub_register_command ("gdbstub_break", grub_cmd_gdb_break,
|
|
|
468bd4 |
- /* TRANSLATORS: this refers to triggering
|
|
|
468bd4 |
- a breakpoint so that the user will land
|
|
|
468bd4 |
- into GDB. */
|
|
|
468bd4 |
- 0, N_("Break into GDB"));
|
|
|
468bd4 |
- cmd_stop = grub_register_command ("gdbstub_stop", grub_cmd_gdbstop,
|
|
|
468bd4 |
- 0, N_("Stop GDB stub"));
|
|
|
468bd4 |
+ cmd = grub_register_command_lockdown ("gdbstub", grub_cmd_gdbstub,
|
|
|
468bd4 |
+ N_("PORT"),
|
|
|
468bd4 |
+ /*
|
|
|
468bd4 |
+ * TRANSLATORS: GDB stub is a small part of
|
|
|
468bd4 |
+ * GDB functionality running on local host
|
|
|
468bd4 |
+ * which allows remote debugger to
|
|
|
468bd4 |
+ * connect to it.
|
|
|
468bd4 |
+ */
|
|
|
468bd4 |
+ N_("Start GDB stub on given port"));
|
|
|
468bd4 |
+ cmd_break = grub_register_command_lockdown ("gdbstub_break", grub_cmd_gdb_break,
|
|
|
468bd4 |
+ /*
|
|
|
468bd4 |
+ * TRANSLATORS: this refers to triggering
|
|
|
468bd4 |
+ * a breakpoint so that the user will land
|
|
|
468bd4 |
+ * into GDB.
|
|
|
468bd4 |
+ */
|
|
|
468bd4 |
+ 0, N_("Break into GDB"));
|
|
|
468bd4 |
+ cmd_stop = grub_register_command_lockdown ("gdbstub_stop", grub_cmd_gdbstop,
|
|
|
468bd4 |
+ 0, N_("Stop GDB stub"));
|
|
|
468bd4 |
}
|
|
|
468bd4 |
|
|
|
468bd4 |
GRUB_MOD_FINI (gdb)
|