Re: your mail

From: Linus Torvalds
Date: Wed Dec 03 2003 - 11:04:49 EST

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?

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