From: Jan Beulich <JBeulich@suse.com>
Date: Tue, 18 Dec 2012 00:01:31 +0000 (-0800)
Subject: sscanf: don't ignore field widths for numeric conversions
X-Git-Tag: v3.8-rc1~74^2~112
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=53809751ac230a3611b5cdd375f3389f3207d471;p=pandora-kernel.git

sscanf: don't ignore field widths for numeric conversions

This is another step towards better standard conformance.  Rather than
adding a local buffer to store the specified portion of the string (with
the need to enforce an arbitrary maximum supported width to limit the
buffer size), do a maximum width conversion and then drop as much of it as
is necessary to meet the caller's request.

Also fail on negative field widths.

Uses the deprecated simple_strto*() functions because kstrtoXX() fail on
non-zero terminated strings.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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