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Date: Sun, 15 May 2022 19:31:55 -0400
From: Rich Felker <dalias@...c.org>
To: Alyssa Ross <hi@...ssa.is>
Cc: musl@...ts.openwall.com
Subject: Re: [PATCH musl v2 3/3] mntent: fix parsing lines with
optional fields
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.
Rich
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