From owner-svn-src-stable@freebsd.org Mon Dec 26 16:45:01 2016 Return-Path: Delivered-To: svn-src-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 57BD7C920FA; Mon, 26 Dec 2016 16:45:01 +0000 (UTC) (envelope-from pfg@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 1BF6F175B; Mon, 26 Dec 2016 16:45:01 +0000 (UTC) (envelope-from pfg@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id uBQGj04e000967; Mon, 26 Dec 2016 16:45:00 GMT (envelope-from pfg@FreeBSD.org) Received: (from pfg@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id uBQGj03c000966; Mon, 26 Dec 2016 16:45:00 GMT (envelope-from pfg@FreeBSD.org) Message-Id: <201612261645.uBQGj03c000966@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: pfg set sender to pfg@FreeBSD.org using -f From: "Pedro F. Giffuni" Date: Mon, 26 Dec 2016 16:45:00 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r310607 - stable/9/bin/pax X-SVN-Group: stable-9 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 26 Dec 2016 16:45:01 -0000 Author: pfg Date: Mon Dec 26 16:45:00 2016 New Revision: 310607 URL: https://svnweb.freebsd.org/changeset/base/310607 Log: MFC r310367: pax(1): Fix a bug with archives smaller than 512 bytes. The problem here is that the archive is too short (< 512 bytes). The buffer routines, try to read at least 512 bytes, even when we try to determine what format file we have, which is wrong. Obtained from: NetBSD (CVS rev 1.26) Modified: stable/9/bin/pax/buf_subs.c Modified: stable/9/bin/pax/buf_subs.c ============================================================================== --- stable/9/bin/pax/buf_subs.c Mon Dec 26 16:43:39 2016 (r310606) +++ stable/9/bin/pax/buf_subs.c Mon Dec 26 16:45:00 2016 (r310607) @@ -853,10 +853,13 @@ buf_fill(void) /* * errors require resync, EOF goes to next archive + * but in case we have not determined yet the format, + * this means that we have a very short file, so we + * are done again. */ if (cnt < 0) break; - if (ar_next() < 0) { + if (frmt == NULL || ar_next() < 0) { fini = 1; return(0); }