Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933599AbdDERH1 (ORCPT ); Wed, 5 Apr 2017 13:07:27 -0400 Received: from mx1.redhat.com ([209.132.183.28]:36240 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933571AbdDERHN (ORCPT ); Wed, 5 Apr 2017 13:07:13 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 018FC57029 Authentication-Results: ext-mx04.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx04.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=dhowells@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 018FC57029 Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 Subject: [PATCH 01/24] efi: Add EFI_SECURE_BOOT bit From: David Howells To: linux-kernel@vger.kernel.org Cc: gnomes@lxorguk.ukuu.org.uk, Josh Boyer , matthew.garrett@nebula.com, linux-efi@vger.kernel.org, gregkh@linuxfoundation.org, dhowells@redhat.com, linux-security-module@vger.kernel.org, keyrings@vger.kernel.org Date: Wed, 05 Apr 2017 18:07:10 +0100 Message-ID: <149141203027.30815.5857690501853492224.stgit@warthog.procyon.org.uk> In-Reply-To: <149141201983.30815.1240162780237131881.stgit@warthog.procyon.org.uk> References: <149141201983.30815.1240162780237131881.stgit@warthog.procyon.org.uk> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Wed, 05 Apr 2017 17:07:13 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1521 Lines: 41 From: Josh Boyer UEFI machines can be booted in Secure Boot mode. Add a EFI_SECURE_BOOT bit that can be passed to efi_enabled() to find out whether secure boot is enabled. This will be used by the SysRq+x handler, registered by the x86 arch, to find out whether secure boot mode is enabled so that it can be disabled. Signed-off-by: Josh Boyer Signed-off-by: David Howells --- arch/x86/kernel/setup.c | 1 + include/linux/efi.h | 1 + 2 files changed, 2 insertions(+) diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 4bf0c8926a1c..396285bddb93 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -1184,6 +1184,7 @@ void __init setup_arch(char **cmdline_p) pr_info("Secure boot disabled\n"); break; case efi_secureboot_mode_enabled: + set_bit(EFI_SECURE_BOOT, &efi.flags); pr_info("Secure boot enabled\n"); break; default: diff --git a/include/linux/efi.h b/include/linux/efi.h index 94d34e0be24f..6049600e5475 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -1069,6 +1069,7 @@ extern int __init efi_setup_pcdp_console(char *); #define EFI_DBG 8 /* Print additional debug info at runtime */ #define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */ #define EFI_MEM_ATTR 10 /* Did firmware publish an EFI_MEMORY_ATTRIBUTES table? */ +#define EFI_SECURE_BOOT 11 /* Are we in Secure Boot mode? */ #ifdef CONFIG_EFI /*