From owner-svn-src-all@freebsd.org  Tue Nov 14 17:57:49 2017
Return-Path: <owner-svn-src-all@freebsd.org>
Delivered-To: svn-src-all@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 CC54FDD95FB;
 Tue, 14 Nov 2017 17:57:49 +0000 (UTC)
 (envelope-from trasz@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 9945D6864D;
 Tue, 14 Nov 2017 17:57:49 +0000 (UTC)
 (envelope-from trasz@FreeBSD.org)
Received: from repo.freebsd.org ([127.0.1.37])
 by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id vAEHvmkK068979;
 Tue, 14 Nov 2017 17:57:48 GMT (envelope-from trasz@FreeBSD.org)
Received: (from trasz@localhost)
 by repo.freebsd.org (8.15.2/8.15.2/Submit) id vAEHvmah068978;
 Tue, 14 Nov 2017 17:57:48 GMT (envelope-from trasz@FreeBSD.org)
Message-Id: <201711141757.vAEHvmah068978@repo.freebsd.org>
X-Authentication-Warning: repo.freebsd.org: trasz set sender to
 trasz@FreeBSD.org using -f
From: Edward Tomasz Napierala <trasz@FreeBSD.org>
Date: Tue, 14 Nov 2017 17:57:48 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org
Subject: svn commit: r325820 - stable/11/bin/ps
X-SVN-Group: stable-11
X-SVN-Commit-Author: trasz
X-SVN-Commit-Paths: stable/11/bin/ps
X-SVN-Commit-Revision: 325820
X-SVN-Commit-Repository: base
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
X-BeenThere: svn-src-all@freebsd.org
X-Mailman-Version: 2.1.25
Precedence: list
List-Id: "SVN commit messages for the entire src tree \(except for &quot;
 user&quot; and &quot; projects&quot; \)" <svn-src-all.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-all/>
List-Post: <mailto:svn-src-all@freebsd.org>
List-Help: <mailto:svn-src-all-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 14 Nov 2017 17:57:49 -0000

Author: trasz
Date: Tue Nov 14 17:57:48 2017
New Revision: 325820
URL: https://svnweb.freebsd.org/changeset/base/325820

Log:
  MFC r324367:
  
  Fix kvm_getprocs(3) error reporting in ps(1).
  
  Previously it just didn't work at all - kvm_getprocs(3) doesn't update
  the &nentries when it returns NULL.  The end result was that ps(1) showed
  garbage data instead of reporting kinfo_proc size mismatch.

Modified:
  stable/11/bin/ps/ps.c
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/bin/ps/ps.c
==============================================================================
--- stable/11/bin/ps/ps.c	Tue Nov 14 17:56:32 2017	(r325819)
+++ stable/11/bin/ps/ps.c	Tue Nov 14 17:57:48 2017	(r325820)
@@ -521,7 +521,11 @@ main(int argc, char *argv[])
 	 */
 	nentries = -1;
 	kp = kvm_getprocs(kd, what, flag, &nentries);
-	if ((kp == NULL && nentries > 0) || (kp != NULL && nentries < 0))
+	/*
+	 * Ignore ESRCH to preserve behaviour of "ps -p nonexistent-pid"
+	 * not reporting an error.
+	 */
+	if ((kp == NULL && errno != ESRCH) || (kp != NULL && nentries < 0))
 		xo_errx(1, "%s", kvm_geterr(kd));
 	nkept = 0;
 	if (nentries > 0) {