linux-kernel - Re: [PATCH] 9p: unsigned/signed wrap in p9/unix modes.

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Date:	Mon, 07 Oct 2013 17:12:25 -0700
From:	Joe Perches <joe@...ches.com>
To:	Geyslan Gregório Bem <geyslan@...il.com>
Cc:	Eric Van Hensbergen <ericvh@...il.com>, rminnich@...dia.gov,
	lucho@...kov.net, v9fs-developer@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org,
	kernel-br <kernel-br@...glegroups.com>
Subject: Re: [PATCH] 9p: unsigned/signed wrap in p9/unix modes.

On Mon, 2013-10-07 at 21:09 -0300, Geyslan Gregório Bem wrote:
> Joe,
> 
> Thank you for reply.
> 
> What do you think about:
> 
>                  strncpy(ext, stat->extension, sizeof(ext));
> +                 if (sscanf(ext, "%c %u %u", &type, &major, &minor) < 3) {
> +                                  p9_debug(P9_DEBUG_ERROR,
> +                                  "It's necessary define type, major
> and minor values when using P9_DMDEVICE");
> +                                  return res;
> +                 }
>                  switch (type) {
>                  case 'c':
>                          res |= S_IFCHR;
>                          break;
> ...
>                  *rdev = MKDEV(major, minor);

I think the plan 9 folk should figure out what's right.


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