Syslinux - Sep 2013 - syslinux.efi: Can't put absolute path in configuration

Hello,

Apparently I can't put absolute path in the config file. Here is what
happen.

The DHCP server send the option filename =
"/srv/tftp/efi64/syslinux.efi".
The client download and boot on this file.
It find its first configuration in /srv/tftp/efi64/pxelinux.cfg/default
Then, I'd like to chain on the config file
/srv/tftp/debian-installer/efi64/pxelinux.cfg/default. Thus the first
file "default" contains this:

label debian
        menu label Debian
        menu default
        config /debian-installer/efi64/pxelinux.cfg/default

And then, the tftpd receive a request for the file:
/srv/tftp/efi64//debian-installer/efi64/pxelinux.cfg/default
Which is not the desired effect.

Just to be clear, I'll recap the requests my tftpd receive:
/srv/tftp/efi64/syslinux.efi
/srv/tftp/efi64/pxelinux.cfg/default
/srv/tftp/efi64//debian-installer/efi64/pxelinux.cfg/default
instead of /srv/tftp/debian-installer/efi64/pxelinux.cfg/default

Note that I can't use "../" because my tftpd feel threatened by
this
and refuse to serve any file containing "..".

Is that a bug?
Or a whishlist? :)

Regards,
Celelibi

On 09/22/2013 12:56 PM, Celelibi wrote:
> Hello,
> 
> Apparently I can't put absolute path in the config file. Here is what
happen.
> 
> The DHCP server send the option filename =
"/srv/tftp/efi64/syslinux.efi".
> The client download and boot on this file.
> It find its first configuration in /srv/tftp/efi64/pxelinux.cfg/default
> Then, I'd like to chain on the config file
> /srv/tftp/debian-installer/efi64/pxelinux.cfg/default. Thus the first
> file "default" contains this:
> 
> label debian
>         menu label Debian
>         menu default
>         config /debian-installer/efi64/pxelinux.cfg/default
> 
> And then, the tftpd receive a request for the file:
> /srv/tftp/efi64//debian-installer/efi64/pxelinux.cfg/default
> Which is not the desired effect.
> 
::/debian-installer/efi64/pxelinux.cfg/default is supposed to work.

	-hpa

2013/9/23, H. Peter Anvin <hpa at zytor.com>:
> On 09/22/2013 12:56 PM, Celelibi wrote:
>> Hello,
>>
>> Apparently I can't put absolute path in the config file. Here is
what
>> happen.
>>
>> The DHCP server send the option filename >>
"/srv/tftp/efi64/syslinux.efi".
>> The client download and boot on this file.
>> It find its first configuration in /srv/tftp/efi64/pxelinux.cfg/default
>> Then, I'd like to chain on the config file
>> /srv/tftp/debian-installer/efi64/pxelinux.cfg/default. Thus the first
>> file "default" contains this:
>>
>> label debian
>>         menu label Debian
>>         menu default
>>         config /debian-installer/efi64/pxelinux.cfg/default
>>
>> And then, the tftpd receive a request for the file:
>> /srv/tftp/efi64//debian-installer/efi64/pxelinux.cfg/default
>> Which is not the desired effect.
>>
>
> ::/debian-installer/efi64/pxelinux.cfg/default is supposed to work.
Thx, it works.


Celelibi