File 0004-efi-Add-a-function-to-read-EFI-variables-with-attrib.patch of Package grub2.19065
From 1d02e5588ccf6f470d5fff5f88c15823d8ab16be Mon Sep 17 00:00:00 2001
From: Daniel Kiper <daniel.kiper@oracle.com>
Date: Thu, 3 Dec 2020 16:01:47 +0100
Subject: [PATCH 04/41] efi: Add a function to read EFI variables with
attributes
It will be used to properly detect and report UEFI Secure Boot status to
the x86 Linux kernel. The functionality will be added by subsequent patches.
Signed-off-by: Ignat Korchagin <ignat@cloudflare.com>
Signed-off-by: Daniel Kiper <daniel.kiper@oracle.com>
Signed-off-by: Marco A Benatto <mbenatto@redhat.com>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
---
grub-core/kern/efi/efi.c | 16 +++++++++++++---
include/grub/efi/efi.h | 5 +++++
2 files changed, 18 insertions(+), 3 deletions(-)
diff --git a/grub-core/kern/efi/efi.c b/grub-core/kern/efi/efi.c
index 87ccbcbd1..bd331bf98 100644
--- a/grub-core/kern/efi/efi.c
+++ b/grub-core/kern/efi/efi.c
@@ -223,8 +223,11 @@ grub_efi_set_variable(const char *var, const grub_efi_guid_t *guid,
}
grub_efi_status_t
-grub_efi_get_variable (const char *var, const grub_efi_guid_t *guid,
- grub_size_t *datasize_out, void **data_out)
+grub_efi_get_variable_with_attributes (const char *var,
+ const grub_efi_guid_t *guid,
+ grub_size_t *datasize_out,
+ void **data_out,
+ grub_efi_uint32_t *attributes)
{
grub_efi_status_t status;
grub_efi_uintn_t datasize = 0;
@@ -261,7 +264,7 @@ grub_efi_get_variable (const char *var, const grub_efi_guid_t *guid,
return GRUB_EFI_OUT_OF_RESOURCES;
}
- status = efi_call_5 (r->get_variable, var16, guid, NULL, &datasize, data);
+ status = efi_call_5 (r->get_variable, var16, guid, attributes, &datasize, data);
grub_free (var16);
if (status == GRUB_EFI_SUCCESS)
@@ -303,6 +306,13 @@ grub_efi_secure_boot (void)
return ret;
}
+grub_efi_status_t
+grub_efi_get_variable (const char *var, const grub_efi_guid_t *guid,
+ grub_size_t *datasize_out, void **data_out)
+{
+ return grub_efi_get_variable_with_attributes (var, guid, datasize_out, data_out, NULL);
+}
+
#pragma GCC diagnostic ignored "-Wcast-align"
/* Search the mods section from the PE32/PE32+ image. This code uses
diff --git a/include/grub/efi/efi.h b/include/grub/efi/efi.h
index 43b9f711a..713c1cf99 100644
--- a/include/grub/efi/efi.h
+++ b/include/grub/efi/efi.h
@@ -69,6 +69,11 @@ grub_err_t EXPORT_FUNC (grub_efi_set_virtual_address_map) (grub_efi_uintn_t memo
grub_efi_uintn_t descriptor_size,
grub_efi_uint32_t descriptor_version,
grub_efi_memory_descriptor_t *virtual_map);
+grub_efi_status_t EXPORT_FUNC (grub_efi_get_variable_with_attributes) (const char *variable,
+ const grub_efi_guid_t *guid,
+ grub_size_t *datasize_out,
+ void **data_out,
+ grub_efi_uint32_t *attributes);
grub_efi_status_t EXPORT_FUNC (grub_efi_get_variable) (const char *variable,
const grub_efi_guid_t *guid,
grub_size_t *datasize_out,
--
2.26.2
