linux-kernel - Re: [PATCH 1/1] Char: moxa, prevent opening unavailable ports

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20090610003429.2a473a76@lxorguk.ukuu.org.uk>
Date:	Wed, 10 Jun 2009 00:34:29 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Jiri Slaby <jirislaby@...il.com>, linux-kernel@...r.kernel.org,
	eibach@...ys.de
Subject: Re: [PATCH 1/1] Char: moxa, prevent opening unavailable ports

> 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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/