On Fri, 02 Mar 2007 08:13:00 -0800 Badari Pulavarty [off-list ref] wrote:

quoted

quoted

What about 
if the
blocks already exists ? What would be return values in those cases ?

0 on success, other normal errors oetherwise..

If asked for a range that includes already-allocated blocks, you just 
allocate any non-allocated blocks in the range, I think.

Yes. What I was trying to figure out is, if there is a requirement that
interface need to return exact number of bytes it *really* allocated
(like write() or read()). I can't think of any, but just wanted to
through it out..

Hopefully not, because posix didn't anticipate that.

We could of course return a positive number on success, but it'd get
tricky on 32-bit machines.

BTW, what is the interface for finding out what is the size of the
pre-allocated file ? 

stat.st_blocks?