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64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
/*
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* Copyright (C) 2020 Richard Hughes <richard@hughsie.com>
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*
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* SPDX-License-Identifier: LGPL-2.1+
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*/
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#include "config.h"
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#include <fwupdplugin.h>
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#include "fu-acpi-dmar.h"
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static void
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fu_plugin_acpi_dmar_add_security_attrs(FuPlugin *plugin, FuSecurityAttrs *attrs)
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{
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g_autofree gchar *fn = NULL;
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g_autofree gchar *path = NULL;
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g_autoptr(FuAcpiDmar) dmar = NULL;
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g_autoptr(FwupdSecurityAttr) attr = NULL;
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g_autoptr(GBytes) blob = NULL;
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g_autoptr(GError) error_local = NULL;
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/* only Intel */
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if (fu_cpu_get_vendor() != FU_CPU_VENDOR_INTEL)
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return;
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/* create attr */
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attr = fwupd_security_attr_new(FWUPD_SECURITY_ATTR_ID_PREBOOT_DMA_PROTECTION);
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fwupd_security_attr_set_plugin(attr, fu_plugin_get_name(plugin));
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fwupd_security_attr_set_level(attr, FWUPD_SECURITY_ATTR_LEVEL_THEORETICAL);
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fu_security_attrs_append(attrs, attr);
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/* load DMAR table */
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path = fu_path_from_kind(FU_PATH_KIND_ACPI_TABLES);
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fn = g_build_filename(path, "DMAR", NULL);
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blob = fu_bytes_get_contents(fn, &error_local);
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if (blob == NULL) {
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g_debug("failed to load %s: %s", fn, error_local->message);
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fwupd_security_attr_set_result(attr, FWUPD_SECURITY_ATTR_RESULT_NOT_VALID);
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return;
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}
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dmar = fu_acpi_dmar_new(blob, &error_local);
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if (dmar == NULL) {
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g_warning("failed to parse %s: %s", fn, error_local->message);
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fwupd_security_attr_set_result(attr, FWUPD_SECURITY_ATTR_RESULT_NOT_VALID);
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return;
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}
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if (!fu_acpi_dmar_get_opt_in(dmar)) {
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fwupd_security_attr_set_result(attr, FWUPD_SECURITY_ATTR_RESULT_NOT_ENABLED);
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return;
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}
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/* success */
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fwupd_security_attr_set_result(attr, FWUPD_SECURITY_ATTR_RESULT_ENABLED);
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fwupd_security_attr_add_flag(attr, FWUPD_SECURITY_ATTR_FLAG_SUCCESS);
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}
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void
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fu_plugin_init_vfuncs(FuPluginVfuncs *vfuncs)
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{
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vfuncs->build_hash = FU_BUILD_HASH;
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vfuncs->add_security_attrs = fu_plugin_acpi_dmar_add_security_attrs;
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}
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