Re: [PATCH] init/do_mounts.c: replace sys_mount() to do_mount()

From: Namhyung Kim
Date: Tue Aug 17 2010 - 09:25:33 EST


2010-08-17 (í), 15:15 +0200, Arnd Bergmann:
> AFAICT there is no need for the copy at all here. The reason that sys_mount
> copies to a separate page is that it gets passed an arbitrary-length user
> input.
>
> Arnd

Right. But make sure to user options never exceed a page, do_mount() has
following code:

if (data_page)
((char *)data_page)[PAGE_SIZE - 1] = 0;


--
Regards,
Namhyung Kim


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