From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751621AbZH0TPd (ORCPT ); Thu, 27 Aug 2009 15:15:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751333AbZH0TPb (ORCPT ); Thu, 27 Aug 2009 15:15:31 -0400 Received: from ey-out-2122.google.com ([74.125.78.27]:13487 "EHLO ey-out-2122.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751228AbZH0TPb convert rfc822-to-8bit (ORCPT ); Thu, 27 Aug 2009 15:15:31 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-type:content-transfer-encoding; b=VPyZwy/dKYcCKLnMo0WNqTl6WAEfOv8JczAJczc9cfdc47gkjNmzbGZptF9FFwrIkV wdclp/XP/BOxfI1ttmqa3P8HBzHkwj93/b9SUNOmcp959dUBBC/sy8B9ZQW5YnQEO5V0 fgpcRamMybZMbXkacFpdFPbE6/LOD5v9gPMSM= MIME-Version: 1.0 In-Reply-To: <082720091839.15057.4A96D2D10002C02000003AD122230647029B0A02D2080C0A9B079D0A030EBF9F030E059B070A08@att.net> References: <082720091839.15057.4A96D2D10002C02000003AD122230647029B0A02D2080C0A9B079D0A030EBF9F030E059B070A08@att.net> From: Ulrich Drepper Date: Thu, 27 Aug 2009 12:15:12 -0700 Message-ID: Subject: Re: popen2 popen call To: heitkamp@ameritech.net Cc: Andreas Schwab , linux-kernel@vger.kernel.org Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Aug 27, 2009 at 11:39, wrote: > OK.  I read in one of the messages, that glibc, passes the popen call to a ABI in the kernel. I have not > looked at the code in glibc yet. popen uses pipe2. There is fallback code to use pipe if necessary. It's compiled out only of the libc assumes the kernel support is available.