From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E29DBC04AB2 for ; Thu, 9 May 2019 14:39:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BCE862053B for ; Thu, 9 May 2019 14:39:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726821AbfEIOjL (ORCPT ); Thu, 9 May 2019 10:39:11 -0400 Received: from mx1.redhat.com ([209.132.183.28]:48852 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726743AbfEIOjJ (ORCPT ); Thu, 9 May 2019 10:39:09 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id B0E56308FF32; Thu, 9 May 2019 14:39:08 +0000 (UTC) Received: from jlaw-desktop.redhat.com (ovpn-123-90.rdu2.redhat.com [10.10.123.90]) by smtp.corp.redhat.com (Postfix) with ESMTP id F24AC17AEA; Thu, 9 May 2019 14:39:07 +0000 (UTC) From: Joe Lawrence To: linux-kernel@vger.kernel.org, live-patching@vger.kernel.org, linux-kbuild@vger.kernel.org Subject: [PATCH v4 01/10] livepatch: Create and include UAPI headers Date: Thu, 9 May 2019 10:38:50 -0400 Message-Id: <20190509143859.9050-2-joe.lawrence@redhat.com> In-Reply-To: <20190509143859.9050-1-joe.lawrence@redhat.com> References: <20190509143859.9050-1-joe.lawrence@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.49]); Thu, 09 May 2019 14:39:08 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Josh Poimboeuf Define klp prefixes in include/uapi/linux/livepatch.h, and use them for replacing hard-coded values in kernel/livepatch/core.c. Update MAINTAINERS. Note: Add defines to uapi as these are also to be used by a newly introduced klp-convert script. Signed-off-by: Josh Poimboeuf Signed-off-by: Joao Moreira Signed-off-by: Joe Lawrence --- MAINTAINERS | 1 + include/linux/livepatch.h | 1 + include/uapi/linux/livepatch.h | 15 +++++++++++++++ kernel/livepatch/core.c | 4 ++-- 4 files changed, 19 insertions(+), 2 deletions(-) create mode 100644 include/uapi/linux/livepatch.h diff --git a/MAINTAINERS b/MAINTAINERS index 09f43f1bdd15..52842fa37261 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -9016,6 +9016,7 @@ R: Joe Lawrence S: Maintained F: kernel/livepatch/ F: include/linux/livepatch.h +F: include/uapi/linux/livepatch.h F: arch/x86/include/asm/livepatch.h F: arch/x86/kernel/livepatch.c F: Documentation/livepatch/ diff --git a/include/linux/livepatch.h b/include/linux/livepatch.h index 53551f470722..16b48e8b29a2 100644 --- a/include/linux/livepatch.h +++ b/include/linux/livepatch.h @@ -25,6 +25,7 @@ #include #include #include +#include #if IS_ENABLED(CONFIG_LIVEPATCH) diff --git a/include/uapi/linux/livepatch.h b/include/uapi/linux/livepatch.h new file mode 100644 index 000000000000..e19430918a07 --- /dev/null +++ b/include/uapi/linux/livepatch.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ + +/* + * livepatch.h - Kernel Live Patching Core + * + * Copyright (C) 2016 Josh Poimboeuf + */ + +#ifndef _UAPI_LIVEPATCH_H +#define _UAPI_LIVEPATCH_H + +#define KLP_RELA_PREFIX ".klp.rela." +#define KLP_SYM_PREFIX ".klp.sym." + +#endif /* _UAPI_LIVEPATCH_H */ diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c index eb0ee10a1981..3d9ed895b252 100644 --- a/kernel/livepatch/core.c +++ b/kernel/livepatch/core.c @@ -235,7 +235,7 @@ static int klp_resolve_symbols(Elf_Shdr *relasec, struct module *pmod) /* Format: .klp.sym.objname.symname,sympos */ cnt = sscanf(strtab + sym->st_name, - ".klp.sym.%55[^.].%127[^,],%lu", + KLP_SYM_PREFIX "%55[^.].%127[^,],%lu", objname, symname, &sympos); if (cnt != 3) { pr_err("symbol %s has an incorrectly formatted name\n", @@ -281,7 +281,7 @@ static int klp_write_object_relocations(struct module *pmod, * See comment in klp_resolve_symbols() for an explanation * of the selected field width value. */ - cnt = sscanf(secname, ".klp.rela.%55[^.]", sec_objname); + cnt = sscanf(secname, KLP_RELA_PREFIX "%55[^.]", sec_objname); if (cnt != 1) { pr_err("section %s has an incorrectly formatted name\n", secname); -- 2.20.1