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Re: Should I be concerned about the XATTR_SHOWCOMPRESSION option?
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Re: Should I be concerned about the XATTR_SHOWCOMPRESSION option?


  • Subject: Re: Should I be concerned about the XATTR_SHOWCOMPRESSION option?
  • From: Chris Suter <email@hidden>
  • Date: Thu, 01 Mar 2012 12:02:38 +1100

Hi James,

On Thu, Mar 1, 2012 at 11:47 AM, James Bucanek <email@hidden> wrote:

> Everything in your earlier post was correct, but just to be clear (if anyone
> else is playing along at home), the contents of large compressed files is
> stored in the resource fork. BUT, said resource fork data is NOT accessible
> through the normal means. It's only accessible via the
> "com.apple.ResourceFork" extended attribute.

Well, I did say:

> For compressed files, you need to modify that slightly because you need to
> read and write the resource fork when you copy the extended
> attributes; you can't open the resource fork using “..namedfork/rsrc”.

but I could have made it clearer.

Also, to be really clear, the only reason it's accessible via the
com.appleResourceFork extended attribute is because that's the only
place where you can pass the XATTR_SHOWCOMPRESSION flag.

Kind regards,

Chris

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References: 
 >Re: Should I be concerned about the XATTR_SHOWCOMPRESSION option? (From: Chris Suter <email@hidden>)
 >Re: Should I be concerned about the XATTR_SHOWCOMPRESSION option? (From: James Bucanek <email@hidden>)

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