RE: [PATCH 3/6] libusbg: Remove fixed-size buffers from usbg_config.

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Hi,

> -----Original Message-----
> From: David Laight [mailto:David.Laight@xxxxxxxxxx]
> Sent: Thursday, March 13, 2014 5:29 PM
> To: Krzysztof Opasiak; mporter@xxxxxxxxxx; linux-
> usb@xxxxxxxxxxxxxxx
> Cc: Andrzej Pietrasiewicz; Karol Lewandowski; Stanislaw Wadas;
> ty317.kim@xxxxxxxxxxx; Marek Szyprowski; Robert Baldyga
> Subject: RE: [PATCH 3/6] libusbg: Remove fixed-size buffers from
> usbg_config.
> 
> From: Krzysztof Opasiak
> > Path and name length should not be placed in constant
> > size buffer but in allocated memory.
> >
> > Use also PATH_MAX macro from limits.h instead of internal
> > library macro.
> 
> There might be some sense in keeping USBG_MAX_PATH_LENGTH
> but defaulting to PATH_MAX.

When I'm thinking about it now, I agree that there is some sense in
keeping it to provide convenient method to make it easily modifiable.

> 
> ...
> > -	char cpath[USBG_MAX_PATH_LENGTH];
> > +	char cpath[PATH_MAX];
> >
> > -	sprintf(cpath, "%s/%s/%s", path, g->name, CONFIGS_DIR);
> > +	n = snprintf(cpath, PATH_MAX, "%s/%s/%s", path, g->name,
> CONFIGS_DIR);
> 
> Use 'sizeof (path)' then it doesn't matter which literal is used
> when the array is allocated.
> 

Right, it makes a sense to use this instead of writing two times same
macro.

Thank you David for your remarks. All issues will be fixed in v2.

-- 
BR's
Krzysztof Opasiak
Samsung R&D Institute Poland
Samsung Electronics
k.opasiak@xxxxxxxxxxx





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