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Re: [Bug-tar] Just updated debian wheezy to wheezy-backports, tar now 1.
From: |
Gene Heskett |
Subject: |
Re: [Bug-tar] Just updated debian wheezy to wheezy-backports, tar now 1.27-1 |
Date: |
Thu, 14 Jan 2016 10:37:22 -0500 |
User-agent: |
KMail/1.9.10 (enterprise35 0.20100827.1168748) |
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
> region Ray Ontko & Co. - Software consulting services -
> http://www.ontko.com/ GPG Key:
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Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>