From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261219AbUBZWxO (ORCPT ); Thu, 26 Feb 2004 17:53:14 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261216AbUBZWxN (ORCPT ); Thu, 26 Feb 2004 17:53:13 -0500 Received: from holomorphy.com ([199.26.172.102]:9486 "EHLO holomorphy.com") by vger.kernel.org with ESMTP id S261219AbUBZWwU (ORCPT ); Thu, 26 Feb 2004 17:52:20 -0500 Date: Thu, 26 Feb 2004 14:52:14 -0800 From: William Lee Irwin III To: Jochen Roemling Cc: linux-kernel@vger.kernel.org Subject: Re: shmget with SHM_HUGETLB flag: Operation not permitted Message-ID: <20040226225214.GP693@holomorphy.com> Mail-Followup-To: William Lee Irwin III , Jochen Roemling , linux-kernel@vger.kernel.org References: <403E74D3.4000305@roemling.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <403E74D3.4000305@roemling.net> User-Agent: Mutt/1.5.5.1+cvs20040105i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Feb 26, 2004 at 11:36:03PM +0100, Jochen Roemling wrote: > Hi, > I'm using stock kernel 2.6.2. I have HUGETLB support compiled in. > CONFIG_HUGETLBFS=y > CONFIG_HUGETLB_PAGE=y > When issuing this command in a C pgm > shmid =shmget(IPC_PRIVATE, SOMESIZE, SHM_HUGETLB|IPC_CREAT|SHM_R|SHM_W) > I get "Operation not Permitted" when running it as a normal user. It > works for root. Without the SHM_HUGETLB flag it works fine for all users. > How can I grant the permission to use HUGETLB to ordinary users? (a) use the fs which uses fs permissions to grant users permission to fiddle with hugetlb (b) man 2 capset (c) proxy daemon for shmget() -- wli