statfs(2)

[David Wolfskill]

On Fri, Apr 18, 2014 at 08:12:02PM +0400, Sergey Matveychuk wrote:
> Hi.
> 
> Tell me please, why f_bfree is unsigned and f_bavail is signed?
> 
> struct statfs {
>   ...
>   uint64_t f_bfree;             /* free blocks in filesystem */
>   int64_t  f_bavail;            /* free blocks avail to non-superuser */
>   ...
> ...

f_bavail can be negative.  f_bfree cannot.

If f_bavail were "free blocks avail" (that is, without the "to
non-superuser" qualification), then it would always be non-negative too.
But it's not.

Peace,
david
-- 
David H. Wolfskill				david at catwhisker.org
Taliban: Evil cowards with guns afraid of truth from a 14-year old girl.

See http://www.catwhisker.org/~david/publickey.gpg for my public key.
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