Re: [Bug-tar] Just updated debian wheezy to wheezy-backports, tar now 1.27-1

[Gene Heskett]

On Thursday 14 January 2016 08:31:30 Nathan Stratton Treadway wrote:

> On Wed, Jan 13, 2016 at 19:03:07 -0500, Gene Heskett wrote:
> > The $64k question, Nathan, which doesn't seem to be defined in that
> > link, is "does it record every nuance of a files permissions and
> > attributes regardless?"
>
> True, the page doesn't specifically mention the "create" operation one
> way or the other, but it seems to imply that when the archive is
> created the info for each archive member is populated with all the
> original file's correct info.  (Various other options on that page
> control how that info is used at extraction time.)
>
> To check, I took a quick look at the tar source code. The variable
> that gets set by -p/--same-permissions is "same_permissions_option",
> and searching for that string in all the source tree finds the only
> places where that variable's contents are used are all in the
> "extract.c" file -- supporting the theory that -p is ignored during
> archive creation.
>
> (Just to be sure, you could always give it a try without the "-p" and
> then check the archive with "tar -tv" to make sure the listing shows
> the permissions you expect....)
>
>
>                                               Nathan

Removing the c seems to have fixed it, at least the report from my amanda 
wrapper script says its happy. tar -tv would need prefaced by a dd told 
to skip the first 32k as that is the amanda header containing where it 
came from and if its compressed type into. After skipping that 32k, the 
rest is a normal tar file, without the ending .tar.  amanda, when doing 
the recovery, uses that data to compose the tar command to extract it to 
the correct place.  I did do the tar -tvf on the added files, and it all 
looks good.

Thanks Nathan.

> ----------------------------------------------------------------------
>------ Nathan Stratton Treadway  -  address@hidden  -  Mid-Atlantic
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Cheers, Gene Heskett
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