From owner-svn-src-all@FreeBSD.ORG  Tue Feb 15 12:42:18 2011
Return-Path: <owner-svn-src-all@FreeBSD.ORG>
Delivered-To: svn-src-all@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id EEB8E106566B;
	Tue, 15 Feb 2011 12:42:18 +0000 (UTC) (envelope-from jhb@FreeBSD.org)
Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c])
	by mx1.freebsd.org (Postfix) with ESMTP id DDAB68FC14;
	Tue, 15 Feb 2011 12:42:18 +0000 (UTC)
Received: from svn.freebsd.org (localhost [127.0.0.1])
	by svn.freebsd.org (8.14.3/8.14.3) with ESMTP id p1FCgI14031571;
	Tue, 15 Feb 2011 12:42:18 GMT (envelope-from jhb@svn.freebsd.org)
Received: (from jhb@localhost)
	by svn.freebsd.org (8.14.3/8.14.3/Submit) id p1FCgICL031569;
	Tue, 15 Feb 2011 12:42:18 GMT (envelope-from jhb@svn.freebsd.org)
Message-Id: <201102151242.p1FCgICL031569@svn.freebsd.org>
From: John Baldwin <jhb@FreeBSD.org>
Date: Tue, 15 Feb 2011 12:42:18 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
	svn-src-head@freebsd.org
X-SVN-Group: head
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Cc: 
Subject: svn commit: r218707 - head/usr.bin/truss
X-BeenThere: svn-src-all@freebsd.org
X-Mailman-Version: 2.1.5
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: <http://lists.freebsd.org/mailman/listinfo/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: <http://lists.freebsd.org/mailman/listinfo/svn-src-all>,
	<mailto:svn-src-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 15 Feb 2011 12:42:19 -0000

Author: jhb
Date: Tue Feb 15 12:42:18 2011
New Revision: 218707
URL: http://svn.freebsd.org/changeset/base/218707

Log:
  Properly check for errors from waitpid().
  
  Submitted by:	gcooper
  MFC after:	1 week

Modified:
  head/usr.bin/truss/setup.c

Modified: head/usr.bin/truss/setup.c
==============================================================================
--- head/usr.bin/truss/setup.c	Tue Feb 15 11:22:47 2011	(r218706)
+++ head/usr.bin/truss/setup.c	Tue Feb 15 12:42:18 2011	(r218707)
@@ -83,7 +83,7 @@ setup_and_wait(char *command[])
 	}
 	
 	/* Only in the parent here */
-	if (waitpid(pid, &waitval, 0) < -1) {
+	if (waitpid(pid, &waitval, 0) < 0) {
 		err(1, "unexpect stop in waitpid");
 		return 0;
 	}
@@ -114,7 +114,7 @@ start_tracing(int pid)
 		err(1, "can not attach to target process");
 
 	child_pid = pid;	
-	if (waitpid(pid, &waitval, 0) < -1) 
+	if (waitpid(pid, &waitval, 0) < 0) 
 		err(1, "Unexpect stop in waitpid");
 
 	return (0);
@@ -133,7 +133,7 @@ restore_proc(int signo __unused)
 
 	/* stop the child so that we can detach */	
 	kill(child_pid, SIGSTOP);
-	if (waitpid(child_pid, &waitval, 0) < -1)
+	if (waitpid(child_pid, &waitval, 0) < 0)
 		err(1, "Unexpected stop in waitpid");
 
 	if (ptrace(PT_DETACH, child_pid, (caddr_t)1, 0) < 0)
@@ -183,7 +183,7 @@ waitevent(struct trussinfo *info)
 	ptrace(PT_SYSCALL, info->pid, (caddr_t)1, pending_signal);
 	pending_signal = 0;
 
-	if (waitpid(info->pid, &waitval, 0) < -1) {
+	if (waitpid(info->pid, &waitval, 0) < 0) {
 		err(1, "Unexpected stop in waitpid");
 	}