On Tue, Oct 10, 2006 at 05:49:59PM -0700, Matt Helsley wrote:
> We want to be able to export a sequence of small (<< 1 page),
> homogenous, unstructured (scalar), attributes through configfs using the
> same file. While this is rather specific, I'd guess it would be a common
> occurrence.
Pray tell, why? "One attribute per file" is the mantra here.
You really should think hard before you break it. Simple heuristic:
would you have to parse the buffer? Then it's wrong.
> Yes, keeping track of writing to these sequences (add, remove, replace)
> is a problem. But that's what the file position is for. configfs could
>
> Does this seem reasonable?
No. It adds complexity to an interface that is supposed to be
simple. Now, I'm not sure what you are trying to do here, so I don't
know how it fits in. Is it really "multiple attributes per file", or
"this attribute is a list of entries"?
An example. If you had to set an IP address and a port, here's
your scenarios:
[Right]
echo "10.0.0.1" > /sys/kernel/config/subsys/item/address
echo "8000" > /sys/kernel/config/subsys/item/port
[Wrong]
echo 10.0.0.1\n8000" > /sys/kernel/config/subsys/item/address-and-port
But perhaps you are not setting two distinct attributes. I
don't understand what you are doing, so some detail would be nice.
Joel
--
Life's Little Instruction Book #407
"Every once in a while, take the scenic route."
Joel Becker
Principal Software Developer
Oracle
E-mail: [EMAIL PROTECTED]
Phone: (650) 506-8127
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