RE: your mail

[Bloch, Jack]

Thanks,

I found the problem. I do have errno.h included. I was doing a read of errno
after calling perror. If I read it directly after getting the neagtive 0ne
back, it contains the right value.

Jack Bloch 
Siemens ICN
phone                (561) 923-6550
e-mail                jack.bloch@xxxxxxxxxxxxxxx


-----Original Message-----
From: Linus Torvalds [mailto:torvalds@xxxxxxxx]
Sent: Wednesday, December 03, 2003 11:04 AM
To: Bloch, Jack
Cc: linux-kernel@xxxxxxxxxxxxxxx
Subject: Re: your mail




On Wed, 3 Dec 2003, Bloch, Jack wrote:
>
> I try to open a non-existan device driver node file. The Kernel returns a
> value of -1 (expected). However, when I read the value of errno it
contains
> a value of 29. A call to the perror functrion does print out the correct
> error message (a value of 2). Why does this happen?

Because you forgot a "#include <errno.h>"? Or you have something else
wrong in your program that makes "errno" mean the wrong thing?

		Linus
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