85 lines
2.3 KiB
C
85 lines
2.3 KiB
C
/*
|
|
* GRUB -- GRand Unified Bootloader
|
|
* Copyright (C) 2020 Free Software Foundation, Inc.
|
|
*
|
|
* GRUB is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* GRUB is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#include <grub/dl.h>
|
|
#include <grub/env.h>
|
|
#include <grub/file.h>
|
|
#include <grub/lockdown.h>
|
|
#include <grub/verify.h>
|
|
|
|
static int lockdown = GRUB_LOCKDOWN_DISABLED;
|
|
|
|
static grub_err_t
|
|
lockdown_verifier_init (grub_file_t io __attribute__ ((unused)),
|
|
enum grub_file_type type,
|
|
void **context __attribute__ ((unused)),
|
|
enum grub_verify_flags *flags)
|
|
{
|
|
*flags = GRUB_VERIFY_FLAGS_SKIP_VERIFICATION;
|
|
|
|
switch (type & GRUB_FILE_TYPE_MASK)
|
|
{
|
|
case GRUB_FILE_TYPE_GRUB_MODULE:
|
|
case GRUB_FILE_TYPE_LINUX_KERNEL:
|
|
case GRUB_FILE_TYPE_MULTIBOOT_KERNEL:
|
|
case GRUB_FILE_TYPE_XEN_HYPERVISOR:
|
|
case GRUB_FILE_TYPE_BSD_KERNEL:
|
|
case GRUB_FILE_TYPE_XNU_KERNEL:
|
|
case GRUB_FILE_TYPE_PLAN9_KERNEL:
|
|
case GRUB_FILE_TYPE_NTLDR:
|
|
case GRUB_FILE_TYPE_TRUECRYPT:
|
|
case GRUB_FILE_TYPE_FREEDOS:
|
|
case GRUB_FILE_TYPE_PXECHAINLOADER:
|
|
case GRUB_FILE_TYPE_PCCHAINLOADER:
|
|
case GRUB_FILE_TYPE_COREBOOT_CHAINLOADER:
|
|
case GRUB_FILE_TYPE_EFI_CHAINLOADED_IMAGE:
|
|
case GRUB_FILE_TYPE_ACPI_TABLE:
|
|
case GRUB_FILE_TYPE_DEVICE_TREE_IMAGE:
|
|
case GRUB_FILE_TYPE_FONT:
|
|
*flags = GRUB_VERIFY_FLAGS_DEFER_AUTH;
|
|
|
|
/* Fall through. */
|
|
|
|
default:
|
|
return GRUB_ERR_NONE;
|
|
}
|
|
}
|
|
|
|
struct grub_file_verifier lockdown_verifier =
|
|
{
|
|
.name = "lockdown_verifier",
|
|
.init = lockdown_verifier_init,
|
|
};
|
|
|
|
void
|
|
grub_lockdown (void)
|
|
{
|
|
lockdown = GRUB_LOCKDOWN_ENABLED;
|
|
|
|
grub_verifier_register (&lockdown_verifier);
|
|
|
|
grub_env_set ("lockdown", "y");
|
|
grub_env_export ("lockdown");
|
|
}
|
|
|
|
int
|
|
grub_is_lockdown (void)
|
|
{
|
|
return lockdown;
|
|
}
|