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 3AFA1C67838 for ; Mon, 10 Dec 2018 04:30:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0A0652082F for ; Mon, 10 Dec 2018 04:30:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0A0652082F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=altlinux.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726668AbeLJEas (ORCPT ); Sun, 9 Dec 2018 23:30:48 -0500 Received: from vmicros1.altlinux.org ([194.107.17.57]:39846 "EHLO vmicros1.altlinux.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726280AbeLJEao (ORCPT ); Sun, 9 Dec 2018 23:30:44 -0500 Received: from mua.local.altlinux.org (mua.local.altlinux.org [192.168.1.14]) by vmicros1.altlinux.org (Postfix) with ESMTP id CF52B72CC70; Mon, 10 Dec 2018 07:30:41 +0300 (MSK) Received: by mua.local.altlinux.org (Postfix, from userid 508) id C1D4D7CEFE9; Mon, 10 Dec 2018 07:30:41 +0300 (MSK) Date: Mon, 10 Dec 2018 07:30:41 +0300 From: "Dmitry V. Levin" To: Max Filippov , Oleg Nesterov , Andy Lutomirski Cc: Elvira Khabirova , Eugene Syromyatnikov , Chris Zankel , Paul Moore , Eric Paris , linux-xtensa@linux-xtensa.org, linux-audit@redhat.com, linux-kernel@vger.kernel.org Subject: [PATCH v5 19/25] xtensa: define syscall_get_* functions Message-ID: <20181210043041.GS6131@altlinux.org> References: <20181210042352.GA6092@altlinux.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syscall_get_* functions are required to be implemented on all architectures in order to extend the generic ptrace API with PTRACE_GET_SYSCALL_INFO request. This adds all 5 syscall_get_* functions on xtensa as documented in asm-generic/syscall.h: syscall_get_nr, syscall_get_arguments, syscall_get_error, syscall_get_return_value, and syscall_get_arch. Cc: Max Filippov Cc: Oleg Nesterov Cc: Andy Lutomirski Cc: Elvira Khabirova Cc: Eugene Syromyatnikov Cc: Chris Zankel Cc: Paul Moore Cc: Eric Paris Cc: linux-xtensa@linux-xtensa.org Cc: linux-audit@redhat.com Signed-off-by: Dmitry V. Levin --- Notes: v5: added syscall_get_nr, syscall_get_arguments, syscall_get_error, and syscall_get_return_value v2: added Acked-by v1: added syscall_get_arch arch/xtensa/include/asm/syscall.h | 69 +++++++++++++++++++++++++++++++ include/uapi/linux/audit.h | 1 + 2 files changed, 70 insertions(+) diff --git a/arch/xtensa/include/asm/syscall.h b/arch/xtensa/include/asm/syscall.h index 3673ff1f1bc5..d529c855a144 100644 --- a/arch/xtensa/include/asm/syscall.h +++ b/arch/xtensa/include/asm/syscall.h @@ -8,6 +8,75 @@ * Copyright (C) 2001 - 2007 Tensilica Inc. */ +#include + +static inline int +syscall_get_nr(struct task_struct *task, struct pt_regs *regs) +{ + return regs->syscall; +} + +static inline void +syscall_get_arguments(struct task_struct *task, struct pt_regs *regs, + unsigned int i, unsigned int n, unsigned long *args) +{ + switch (i) { + case 0: + if (!n--) + break; + *args++ = regs->areg[6]; + /* fall through */ + case 1: + if (!n--) + break; + *args++ = regs->areg[3]; + /* fall through */ + case 2: + if (!n--) + break; + *args++ = regs->areg[4]; + /* fall through */ + case 3: + if (!n--) + break; + *args++ = regs->areg[5]; + /* fall through */ + case 4: + if (!n--) + break; + *args++ = regs->areg[8]; + /* fall through */ + case 5: + if (!n--) + break; + *args++ = regs->areg[9]; + /* fall through */ + case 6: + if (!n--) + break; + /* fall through */ + default: + BUG(); + } +} + +static inline long +syscall_get_error(struct task_struct *task, struct pt_regs *regs) +{ + return IS_ERR_VALUE(regs->areg[2]) ? regs->areg[2] : 0; + +static inline long +syscall_get_return_value(struct task_struct *task, struct pt_regs *regs) +{ + return regs->areg[2]; +} + +static inline int +syscall_get_arch(void) +{ + return AUDIT_ARCH_XTENSA; +} + struct pt_regs; asmlinkage long xtensa_ptrace(long, long, long, long); asmlinkage long xtensa_sigreturn(struct pt_regs*); diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h index 1e9808f3a240..bcc0619b046f 100644 --- a/include/uapi/linux/audit.h +++ b/include/uapi/linux/audit.h @@ -425,6 +425,7 @@ enum { #define AUDIT_ARCH_TILEGX32 (EM_TILEGX|__AUDIT_ARCH_LE) #define AUDIT_ARCH_TILEPRO (EM_TILEPRO|__AUDIT_ARCH_LE) #define AUDIT_ARCH_X86_64 (EM_X86_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE) +#define AUDIT_ARCH_XTENSA (EM_XTENSA) #define AUDIT_PERM_EXEC 1 #define AUDIT_PERM_WRITE 2 -- ldv