Re: pivot_root - wrong check on mount(2)

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Hello Davide,

On Thu, 26 Nov 2020 at 01:01, Davide Giorgio <davide@xxxxxxxxxxxxxxxx> wrote:
>
> Good morning,
>
> reading the pivot_root man page
> (https://man7.org/linux/man-pages/man2/pivot_root.2.html)
> there seems to be an error in the example source program
> "pivot_root_demo.c".
> In particular, there is a wrong check on the return value of mount(2).
> https://man7.org/linux/man-pages/man2/mount.2.html#RETURN_VALUE
>
> The error is in this line
> if (mount(NULL, "/", NULL, MS_REC | MS_PRIVATE, NULL) == 1)
>
> that should be
> if (mount(NULL, "/", NULL, MS_REC | MS_PRIVATE, NULL) == -1)
>
>
> Thank you for your work, kind regards

Thanks! Fixed!

Cheers,

Michael

-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/



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