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Date: Mon, 16 May 2022 10:07:28 +0000
From: Alyssa Ross <>
To: Rich Felker <>
Subject: Re: [PATCH musl v2 3/3] mntent: fix parsing lines with
 optional fields

On Sun, May 15, 2022 at 07:31:55PM -0400, Rich Felker wrote:
> On Thu, May 12, 2022 at 10:08:37AM -0400, Rich Felker wrote:
> > A few other changes I think should be made:
> >
> > [...]
> >
> > - The n[] array should be changed to size_t[] and the %n's to %zn's.
> >   This should actually be done as a separate change, as it's a fix for
> >   a bug overlooked when 05973dc3bbc1aca9b3c8347de6879ed72147ab3b made
> >   the buffer length potentially longer than INT_MAX.
> I'm going to reverse position on this: since getmntent_r only accepts
> an int for the line length, the thread-unsafe getmntent should not be
> able to process longer lines either. I'll instead just use the len you
> already computed to treat lines longer than INT_MAX as invalid.

Makes sense.

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