From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751415AbdA1LUt (ORCPT ); Sat, 28 Jan 2017 06:20:49 -0500 Received: from mout.gmx.net ([212.227.15.18]:57884 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750858AbdA1LUl (ORCPT ); Sat, 28 Jan 2017 06:20:41 -0500 Date: Sat, 28 Jan 2017 12:13:10 +0100 From: Helge Deller To: linux-kernel@vger.kernel.org, Andrew Morton Cc: linux-parisc@vger.kernel.org Subject: [PATCH] prctl: implement PR_GET_ENDIAN for all architectures Message-ID: <20170128111310.GA13389@ls3530.fritz.box> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.7.1 (2016-10-04) X-Provags-ID: V03:K0:II7F0BBqrOCvixsFG2gO9bP9lubUB7QqmfG9ZyIXZcaSClwkJUQ U36JdvVihhs823BQl1FAjB2VYsuj0IDBciOr9+Dpxw5orOI+VrN88H1sOXgfiGA9ziEdMl2 2+eltUM96PaXlill6lui/zPQTPUR+0XFUiMDlEH8LYis5nZQnxjNBSA9Ea8U0MzGT83B2og EMbRVxB/5ZSNqC/h5artQ== X-UI-Out-Filterresults: notjunk:1;V01:K0:bFaxLioJpNU=:J45NlnBByt2dizMjj4k6Yr TTPmM6cHl6rPo2WVh+QPvKRYSX19Mr2s11YdYUmsiziW9ALFl/l7wNDiBcILAgqQAgSO6pWOC KEihK05mnM6oEnQVwB1V/MdlzpDLQtuWig6kZgCu+ATY1kl+K0U2B+iCQ9D6Qjqz1fNJRyp3p H9NIUcPRM4OWf4KCI6MxsZDBL3hMHBaAxMZAfIcYUiKYtxFd8te4/C82LF48mdyyspkXAKhhh DbOIzl8hfn3awX4RP8JtBTklaCAG2oEPhT0VgGeJ1uPtsvqimbmK1TKkbLPM2IQCCV72r0q0p iP2JDY0i3lcPphwrUr72v6GY7cws6CRuhdv/bhDYFuoKJzDq+MnhpEL+8ZJL54GD2B3BEYx0T pC61uZlYpkX/130A6x6LtYxMI9kl0gv0wZh1IVhBqfT9WOX9Bbx6kPwRrfYzUklJTFqQxBXYn 3w6qLHvc4X0JsOmDk8lc1Gi4eJIrJP68NEXxY4kvcYamF8pO31yrrLagfEo3Ro260fJ+o2PAo am+XyT6LenN+zl2od1tyUYrMafRU+yYDzsIyQitYXOjy1pjJYDL8zACQ8jm8F685nyJiYxYsh Spw7XQsckBFTxnU5y9EeIdQ1IjKHuzY83hBJYsP0ShLJjBrTBqzUsliMUO62/naZjmGiXG4e6 GPLuowiIwlLVaLdsqenNHN3uGrrv10ie5C1vTeFMFsx+L/wsRbVfSDOdOygMHMbhesUYVoJQH SRwVLxYfqrYrDnyjA5TnV3RAs8mAzcI+TtzclYV1LXKijJbQ0ogxU6qYgtQ= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The prctl(PR_GET_ENDIAN) syscall was added to Kernel 2.6.18, but implemented for PowerPC only. This trivial patch adds support for this syscall for all other architectures. Signed-off-by: Helge Deller diff --git a/kernel/sys.c b/kernel/sys.c index 842914e..5818e5e 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -79,9 +79,6 @@ #ifndef GET_FPEXC_CTL # define GET_FPEXC_CTL(a, b) (-EINVAL) #endif -#ifndef GET_ENDIAN -# define GET_ENDIAN(a, b) (-EINVAL) -#endif #ifndef SET_ENDIAN # define SET_ENDIAN(a, b) (-EINVAL) #endif @@ -2136,7 +2133,13 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3, return -EFAULT; break; case PR_GET_ENDIAN: +#ifdef GET_ENDIAN error = GET_ENDIAN(me, arg2); +#elif defined(__BIG_ENDIAN) + error = put_user(PR_ENDIAN_BIG, (unsigned int __user *)arg2); +#else + error = put_user(PR_ENDIAN_LITTLE, (unsigned int __user *)arg2); +#endif break; case PR_SET_ENDIAN: error = SET_ENDIAN(me, arg2);