Re: [Qemu-devel] [PATCH] keymaps: detect recursive keyboard layout file

[Li Qiang]

Gerd Hoffmann <address@hidden> 于2018年11月15日周四 下午6:15写道：

> On Thu, Nov 15, 2018 at 01:04:23AM -0800, Li Qiang wrote:
> > When the parse_keyboard_layout() find a "include " line
> > in the keyboard layout file, it will call parse_keyboard_layout()
> > to perform a recursive parse. If the keyboard layout is malformed
> > by adding a line include itself, this can cause an infinite parse.
> > Thus cause qemu a segv. This patch avoid this.
>
> Hmm.  Most keymap files are generated by qemu-keymap these days and do
> not use includes in the first place.  Three are left over: nl-be, sl,
> sv.
>
> Looking at them it seems like nl-be is not functional, it just includes
> "common" and doesn't define any mappings.  For sl and sv I have no clue
> what keymap they represent.
>
> So I'd suggest to just remove support for "include", drop the nl-be map,
> fix the sl and sv maps that they don't need "include" any more.  Either
> just replace the "include" statement with the content of the "common"
> file.  Or, if someone has a clue what keyboard layout these keymaps are
> for, add rules to the Makefile and update them using then using
> qemu-keymap.
>


Hello Gerd,

Thanks for your advice.
Here my consideration is for the '-k' option can specific any file.
Though it seems too radical,  I consider every input can't be trusted.
Anyway, it's ok you ingore this patch.

Thanks,
Li Qiang




>
> cheers,
>   Gerd
>
>