From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: Sat, 29 Sep 2012 20:23:19 +0000 (+0200)
Subject: sysfs: sysfs_pathname/sysfs_add_one: Use strlcat() instead of strcat()
X-Git-Tag: v3.7-rc3~14^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=66081a72517a131430dcf986775f3268aafcb546;p=pandora-kernel.git

sysfs: sysfs_pathname/sysfs_add_one: Use strlcat() instead of strcat()

The warning check for duplicate sysfs entries can cause a buffer overflow
when printing the warning, as strcat() doesn't check buffer sizes.
Use strlcat() instead.

Since strlcat() doesn't return a pointer to the passed buffer, unlike
strcat(), I had to convert the nested concatenation in sysfs_add_one() to
an admittedly more obscure comma operator construct, to avoid emitting code
for the concatenation if CONFIG_BUG is disabled.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

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