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From d95b24bd02cf41cca9adebd95f10609d6424d2b3 Mon Sep 17 00:00:00 2001
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From: Matthew Garrett <matthew.garrett@nebula.com>
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Date: Tue, 19 Nov 2013 10:09:13 -0500
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Subject: [PATCH 10/74] Clarify meaning of insecure_mode
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insecure_mode was intended to indicate that the user had explicity disabled
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checks with mokutil, which means it wasn't the opposite of secure_mode().
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Change the names to clarify this and don't show the insecure mode message
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unless the user has explicitly enabled that mode.
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Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
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---
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replacements.c | 6 ------
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shim.c | 12 ++++++------
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2 files changed, 6 insertions(+), 12 deletions(-)
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diff --git a/replacements.c b/replacements.c
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index bac5e5d..5ea5c32 100644
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--- a/replacements.c
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+++ b/replacements.c
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@@ -64,13 +64,9 @@ static typeof(systab->BootServices->StartImage) system_start_image;
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static typeof(systab->BootServices->Exit) system_exit;
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static typeof(systab->BootServices->ExitBootServices) system_exit_boot_services;
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-extern UINT8 insecure_mode;
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-
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void
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unhook_system_services(void)
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{
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- if (insecure_mode)
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- return;
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systab->BootServices->Exit = system_exit;
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systab->BootServices->StartImage = system_start_image;
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systab->BootServices->ExitBootServices = system_exit_boot_services;
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@@ -123,8 +119,6 @@ exit(EFI_HANDLE ImageHandle, EFI_STATUS ExitStatus,
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void
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hook_system_services(EFI_SYSTEM_TABLE *local_systab)
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{
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- if (insecure_mode)
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- return;
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systab = local_systab;
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/* We need to hook various calls to make this work... */
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diff --git a/shim.c b/shim.c
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index 9ae1936..524f5fc 100644
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--- a/shim.c
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+++ b/shim.c
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@@ -85,7 +85,7 @@ int loader_is_participating;
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#define EFI_IMAGE_SECURITY_DATABASE_GUID { 0xd719b2cb, 0x3d3a, 0x4596, { 0xa3, 0xbc, 0xda, 0xd0, 0x0e, 0x67, 0x65, 0x6f }}
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-UINT8 insecure_mode;
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+UINT8 user_insecure_mode;
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UINT8 ignore_db;
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typedef enum {
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@@ -456,7 +456,7 @@ static BOOLEAN secure_mode (void)
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UINT8 *Data;
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UINT8 sb, setupmode;
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- if (insecure_mode)
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+ if (user_insecure_mode)
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return FALSE;
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status = get_variable(L"SecureBoot", &Data, &len, global_var);
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@@ -1534,7 +1534,7 @@ static EFI_STATUS check_mok_sb (void)
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UINTN MokSBStateSize = 0;
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UINT32 attributes;
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- insecure_mode = 0;
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+ user_insecure_mode = 0;
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ignore_db = 0;
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status = get_variable_attr(L"MokSBState", &MokSBState, &MokSBStateSize,
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@@ -1555,7 +1555,7 @@ static EFI_STATUS check_mok_sb (void)
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status = EFI_ACCESS_DENIED;
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} else {
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if (*(UINT8 *)MokSBState == 1) {
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- insecure_mode = 1;
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+ user_insecure_mode = 1;
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}
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}
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@@ -1753,10 +1753,10 @@ EFI_STATUS efi_main (EFI_HANDLE image_handle, EFI_SYSTEM_TABLE *passed_systab)
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/*
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* Tell the user that we're in insecure mode if necessary
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*/
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- if (!secure_mode()) {
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+ if (user_insecure_mode) {
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Print(L"Booting in insecure mode\n");
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uefi_call_wrapper(BS->Stall, 1, 2000000);
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- } else {
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+ } else if (secure_mode()) {
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/*
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* Install our hooks for ExitBootServices() and StartImage()
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*/
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--
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1.9.3
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