Re: [PATCH 4/4] Allow protocol to be separated from host with a semicolon

[Andrei Borzenkov]

24.01.2017 23:50, Matthew Garrett пишет:
> On Mon, Jan 23, 2017 at 8:02 PM, Andrei Borzenkov <address@hidden> wrote:
>> 24.01.2017 03:36, Matthew Garrett пишет:
>>> Some DHCP servers (such as dnsmasq) tokenise parameters with commas, making
>>> it impossible to pass boot files with commas in them. Allow using a
>>
>> grub_net_open() operates on devices, not files. Please give more details
>> about your problem.
> 
> The DHCP server will return a string in the boot_file field. If you
> want to indicate that this file should be obtained over http, the
> easiest way to handle this is to provide a boot file in the form
> (http,host)filename. Unfortunately dnsmasq uses commas to tokenise its
> configuration parameters and there appears to be no way to override
> that, which makes it impossible to provide a boot file in this form.
> Allowing the use of an alternative character avoids this problem.
> 

This won't work because (http,host) will never be interpreted as device
in current code so you need to support this first before this patch can
even be considered. Also I am not convinced that arbitrary changing
syntax is good idea.

You already can set $prefix when generating image. Why is it not enough?