[OmniOS-discuss] dd does not work as expected with count=0 option

[Dan McDonald]

I suspect this is an Illumos bug.  I'm top posting this because it's my phone, and I think the Illumos developers mailing list should confirm my suspicions.

Dan

Sent from my iPhone (typos, autocorrect, and all)

> On Jul 29, 2014, at 8:21 AM, Janne Savikko <jsavikko at niksula.hut.fi> wrote:
> 
> Hi,
> 
> I've used dd to create sparse files, and I noticed that dd does not work as expected with count=0 option, but keeps writing indefinitely. This does not happen with dd of Ubuntu 12.04,14.04, Solaris 11 Express (snv_151a), OSX 10.10 beta or OpenBSD 5.5.
> 
> OmniOS build that I've tested this problem: omnios-b281e50 i86pc
> This behavior happens also with old Solaris 10 (Generic_139555-08 sun4v).
> 
> Manual pages state "count=n, Copies only n input blocks". So according to documentation I expect it to copy only 0 blocks.
> 
> Is this desired behavior (and should documentation be fixed) or a bug?
> 
> 
> Cheers,
> Janne
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