Re: [bug] Error in mprotect man page description of return value

[Michael Kerrisk <mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

On 05/29/13 00:30, Kennon Bittick wrote:
> Hello,
> 
> I would like to report what I believe is an error in the man page of
> mprotect. The description of the return value says:
> 
> "Upon successful completion, mprotect() shall return 0; otherwise, it
> shall return -1 and set errno to indicate the error."
> 
> However, in my use the behavior does not match this. I reviewed the
> source code, and it appeared to match my experience rather than the
> man pages' description. Instead, the function returns (error_code *
> -1) and does not change errno.
> 
> I am new to bug reporting, so I apologize if I have made a mistake in
> the format or content of the report. Thank you.

Kennon,

How are you calling mprotect()? The wrapper function does the 
manipulation of errno. See syscalls(2).

Cheers,

Michael

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