|
 |
6a35ff |
From 95bd1d88003a9a7c2732472b061ad2a9c7140419 Mon Sep 17 00:00:00 2001
|
|
|
6a35ff |
From: Patrick Uiterwijk <patrick@puiterwijk.org>
|
|
|
6a35ff |
Date: Thu, 6 Dec 2018 10:08:45 +0100
|
|
|
6a35ff |
Subject: [PATCH 27/62] Make EFI variable copying fatal only on secureboot
|
|
|
6a35ff |
enabled systems
|
|
|
6a35ff |
|
|
|
6a35ff |
I have come across systems that are unwilling to reserve enough memory for
|
|
|
6a35ff |
a MokListRT big enough for big certificates.
|
|
|
6a35ff |
This seems to be the case with firmware implementations that do not support
|
|
|
6a35ff |
secureboot, which is probably the reason they went with much lower variable
|
|
|
6a35ff |
storage.
|
|
|
6a35ff |
|
|
|
6a35ff |
This patch set makes sure we can still boot on those systems, by only
|
|
|
6a35ff |
making the copy action fatal if the system has secure boot enabled, or if
|
|
|
6a35ff |
the error was anything other than EFI_INVALID_PARAMETER.
|
|
|
6a35ff |
|
|
|
6a35ff |
Signed-off-by: Patrick Uiterwijk <patrick@puiterwijk.org>
|
|
|
6a35ff |
Upstream-commit-id: 741c61abba7
|
|
|
6a35ff |
---
|
|
|
6a35ff |
shim.c | 12 +++++++++++-
|
|
|
6a35ff |
1 file changed, 11 insertions(+), 1 deletion(-)
|
|
|
6a35ff |
|
|
|
6a35ff |
diff --git a/shim.c b/shim.c
|
|
|
6a35ff |
index 0a95f94b360..d4ed332f901 100644
|
|
|
6a35ff |
--- a/shim.c
|
|
|
6a35ff |
+++ b/shim.c
|
|
|
6a35ff |
@@ -2609,7 +2609,17 @@ efi_main (EFI_HANDLE passed_image_handle, EFI_SYSTEM_TABLE *passed_systab)
|
|
|
6a35ff |
* boot-services-only state variables are what we think they are.
|
|
|
6a35ff |
*/
|
|
|
6a35ff |
efi_status = import_mok_state(image_handle);
|
|
|
6a35ff |
- if (EFI_ERROR(efi_status)) {
|
|
|
6a35ff |
+ if (!secure_mode() && efi_status == EFI_INVALID_PARAMETER) {
|
|
|
6a35ff |
+ /*
|
|
|
6a35ff |
+ * Make copy failures fatal only if secure_mode is enabled, or
|
|
|
6a35ff |
+ * the error was anything else than EFI_INVALID_PARAMETER.
|
|
|
6a35ff |
+ * There are non-secureboot firmware implementations that don't
|
|
|
6a35ff |
+ * reserve enough EFI variable memory to fit the variable.
|
|
|
6a35ff |
+ */
|
|
|
6a35ff |
+ console_print(L"Importing MOK states has failed: %s: %r\n",
|
|
|
6a35ff |
+ msgs[msg], efi_status);
|
|
|
6a35ff |
+ console_print(L"Continuing boot since secure mode is disabled");
|
|
|
6a35ff |
+ } else if (EFI_ERROR(efi_status)) {
|
|
|
6a35ff |
die:
|
|
|
6a35ff |
console_print(L"Something has gone seriously wrong: %s: %r\n",
|
|
|
6a35ff |
msgs[msg], efi_status);
|
|
|
6a35ff |
--
|
|
|
6a35ff |
2.26.2
|
|
|
6a35ff |
|