linux-kernel - sysfs_ops show vector: size of buffer not required?

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Message-ID: <20100124074118.GA4201@himanshu-laptop>
Date:	Sun, 24 Jan 2010 13:11:18 +0530
From:	Himanshu Chauhan <himanshu@...metricore.com>
To:	Linux Kernel <linux-kernel@...r.kernel.org>
Cc:	Kernel Newbies <kernelnewbies@...linux.org>,
	Greg Kroah <greg@...ah.com>
Subject: sysfs_ops show vector: size of buffer not required?

Hi All,

The sysfs_ops's show vector doesn't have a size of the
buffer given to the vector, while store on the other hand
has. What is the rationale behind it?

I see most of the implementations doing strcpy in the
show vectors. Ill behaved driver might overwrite the
given buffer when size is not known. Should this be addressed
by providing the buffer size along with the buffer pointer?

Thanks

Best Regards
Himanshu
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