linux-kernel - Re: Problem: cat < /dev/my

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Message-Id: <200703102343.31135.vda.linux@googlemail.com>
Date:	Sat, 10 Mar 2007 23:43:31 +0100
From:	Denis Vlasenko <vda.linux@...glemail.com>
To:	Mockern@...dex.ru
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Problem: cat < /dev/my_ttyS0 is not blocked

On Saturday 10 March 2007 13:16, Mockern wrote:
> I have a problem with  cat < /dev/my_ttyS0 (see strace output below).
> cat function is not blocked. I don't understand why it is not stopped
> at read(0, __  and terminated?  
> Thank you

Because /dev/my_ttyS0 is probaly a null file.

Please show output of 'ls -l /dev/*ttyS*'

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vda
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