From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from mail-io0-f169.google.com ([209.85.223.169]) by ur; Sun Aug 23 19:51:06 EDT 2015
Received: by iodt126 with SMTP id t126so131586187iod.2
        for <9front@9front.org>; Sun, 23 Aug 2015 16:50:58 -0700 (PDT)
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=1e100.net; s=20130820;
        h=x-gm-message-state:content-type:mime-version
         :content-transfer-encoding:subject:message-id:in-reply-to:references
         :user-agent:date:from:to;
        bh=HPQ3aKy4D40ILsJ9QPYTLIPL1teiRIJpTSGBQn8v72Q=;
        b=cBRUz2wjdKt0esTkrcANNa7OA6SJpduAZF01mmlXMCrEoOQVzvQs/yp232UaaskjDn
         rlzGx5V7K6WXPfwyzJELazgcowwG9enuPFRSVAMPppBMndT3G6iVpcEP3Zlu78g63cVS
         PzoAhsijTTd4mmaVLoFX4a2ymbA9vGhc3evnFJ00Y0MDfIY4Wl8pPLKD7MEETXvKOfdw
         /gLdxq5ZCsqOh6RwuaubpP+vz9ebq5SZWlu8MP9tyOiQEU3pXGl7n0Zxt6lwm98np7Rs
         DpXELvTh6CTaBQT4cSfHo5L/oFGsBupD/Z9CKhqo0wsT8i3Lba6Yg2kEHu0RUMJ8UKZM
         U5VA==
X-Gm-Message-State: ALoCoQnQ2rS0HGXZ7u/wf6Ihyik3mcTcGHJ629XeIj9yWtt/ayNoPGG7kUUEBjnJ7TXc3k+IqchC
X-Received: by 10.107.16.139 with SMTP id 11mr21345154ioq.122.1440373858130;
        Sun, 23 Aug 2015 16:50:58 -0700 (PDT)
Return-Path: <mischief@offblast.org>
Received: from delta ([172.56.9.65])
        by smtp.gmail.com with ESMTPSA id j3sm7767512ige.0.2015.08.23.16.50.56
        for <9front@9front.org>
        (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
        Sun, 23 Aug 2015 16:50:57 -0700 (PDT)
Received: from localhost (delta [local])
	by delta (OpenSMTPD) with ESMTPA id 9cb6dc89
	for <9front@9front.org>;
	Sun, 23 Aug 2015 23:50:44 +0000 (UTC)
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Subject: [PATCH 4 of 8] cwfs: use IOUNIT as MAXDAT,
 fix Msgbuf count overflow when MAXDAT > 2^15-1
X-Mercurial-Node: b7929f69bbb7120db5900fe38f717ccb433345fa
X-Mercurial-Series-Index: 4
X-Mercurial-Series-Total: 8
Message-Id: <b7929f69bbb7120db590.1440373754@delta>
List-ID: <9front.9front.org>
X-Glyph: ➈
X-Bullshit: secure configuration scripting JSON over JSON module plugin
X-Mercurial-Series-Id: <72294b856560ea15445f.1440373751@delta>
In-Reply-To: <patchbomb.1440373750@delta>
References: <patchbomb.1440373750@delta>
User-Agent: Mercurial-patchbomb/3.3.2
Date: Sun, 23 Aug 2015 16:49:14 -0700
From: mischief <mischief@offblast.org>
To: 9front@9front.org

# HG changeset patch
# User mischief <mischief@offblast.org>
# Date 1440366687 25200
#      Sun Aug 23 14:51:27 2015 -0700
# Node ID b7929f69bbb7120db5900fe38f717ccb433345fa
# Parent  59420710e4e3a510c41f6c7d4047a144d5491b42
cwfs: use IOUNIT as MAXDAT, fix Msgbuf count overflow when MAXDAT > 2^15-1

diff -r 59420710e4e3 -r b7929f69bbb7 sys/src/cmd/cwfs/portdat.h
--- a/sys/src/cmd/cwfs/portdat.h	Sun Aug 23 14:51:27 2015 -0700
+++ b/sys/src/cmd/cwfs/portdat.h	Sun Aug 23 14:51:27 2015 -0700
@@ -26,7 +26,7 @@
 
 /* constants that don't affect disk layout */
 enum {
-	MAXDAT		= 8192,		/* max allowable data message */
+	MAXDAT		= IOUNIT,	/* max allowable data message */
 	MAXMSG		= 128,		/* max protocol message sans data */
 
 	MB		= 1024*1024,
@@ -459,7 +459,7 @@
 struct	Msgbuf
 {
 	ulong	magic;
-	short	count;
+	int	count;
 	short	flags;
 		#define	LARGE	(1<<0)
 		#define	FREE	(1<<1)