Re: How to control the order of different export options for different client formats?

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NeilBrown wrote:

Unfortunately you cannot do that.

The place in the code where this is determined is towards the end of
'lookup_export' in utils/mountd/cache.c

Were I to try to 'fix' this I would probably define a new field in 'struct
exportent' which holds a 'priority'.

Then allow a setting like "priority=4" in /etc/exports

Then change the code in lookup_export to choose the one with the higher
priority, rather than the 'first' one.

NeilBrown

I've hacked the source to make netgroups take precedence over subnets by moving MCL_NETGROUP before MCL_SUBNETWORK in the enum in support/include/exportfs.h - which works for me, as I only use netgroups, subnets and anonymous (in that priority order).

IMHO the priority of exports should really be as they appear on the line in /etc/exports, but I guess if that were to change, it would break existing /etc/exports that use the current priority ordering (either by design or accident!).

Having a priority option would be a very good idea - and may be in the meantime the exports man page should be updated with info about the current priority ordering?

Thanks

James Pearson
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