[Buildroot] [PATCH 2/3] skeleton: optionally wait for network interfaces to appear

[Yann E. MORIN <yann.morin.1998@free.fr>]

Peter, All,

On 2015-10-28 22:51 +0100, Peter Korsgaard spake thusly:
> >>>>> "Yann" == Yann E MORIN <yann.morin.1998@free.fr> writes:
>  > Also, I read this in man 5 interfaces;
> 
>  >     When ifupdown is being called with the --all option, before doing
>  >     anything to interfaces, if [sic] calls all the hook scripts (pre-up
>  >     or down) with IFACE set to "--all", LOGICAL set to the current value
>  >     of --allow parameter (or "auto" if it's  not set), ADDRFAM="meta"
>  >     and METHOD="none". After all the interfaces have been brought up or
>  >     taken down, the appropriate scripts (up or post-down) are executed.
> 
>  > Since S40network calls 'ifup -a' and you added a pre-up script, I guess
>  > it should filter out the '--all' interface and exit early in that case.
> 
> As far as I can see from the busybox implementation atleast, -a (all)
> only causes it to run ifup/ifdown (with IFACE set to the interface name) for
> each interface listed as auto, so it doesn't do the "--all" thing, but
> the Debian variant does.

Since we already have the option to use the full-fledged ifup-down, we
should support the case where IFACE=--all in the script.

Regards,
Yann E. MORIN.

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