From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Jiri Slaby <jirislaby@gmail.com>,
linux-kernel@vger.kernel.org, eibach@gdsys.de
Subject: Re: [PATCH 1/1] Char: moxa, prevent opening unavailable ports
Date: Wed, 10 Jun 2009 00:34:29 +0100 [thread overview]
Message-ID: <20090610003429.2a473a76@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <20090609122735.9a915cbf.akpm@linux-foundation.org>
> btw, what's this code in moxa_open() doing?
>
> if (port == MAX_PORTS) {
> return capable(CAP_SYS_ADMIN) ? 0 : -EPERM;
> }
>
> why does it return 0 if CAP_SYS_ADMIN?
0-MAX_PORTS-1 = tty devices
MAX_PORTS = magic secret control channel
Alan
prev parent reply other threads:[~2009-06-09 23:33 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-09 14:33 Jiri Slaby
2009-06-09 19:27 ` Andrew Morton
2009-06-09 19:36 ` Jiri Slaby
2009-06-09 23:34 ` Alan Cox [this message]
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