Re: [Dar-support] dar and acl

[Denis C. <dar...@fr...>]

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Le 21/06/2012 15:46, Paolo Sala wrote :
> Hi all, I've read that dar backup the acl (extended attributes) too if
> you don't use any -u -U option.

Hello Paolo,

ACL are not implemented over Extended Attributes on MacOS X. No problem
under other unix systems (Linux, openbsd, solaris ...)

> 
> Well, I have installed dar 2.4.2 from source with acl support:
> $ dar -V
> 
>  dar version 2.4.2, Copyright (C) 2002-2052 Denis Corbin
>    Long options support       : YES
> 
>  Using libdar 5.1.1 built with compilation time options:
>    Libz compression (gzip)    : YES
>    Libbz2 compression (bzip2) : YES
>    Liblzo2 compression (lzo)  : YES
>    Strong encryption          : YES
>    Extended Attributes support: YES
>    Large files support (> 2GB): YES
>    ext2fs NODUMP flag support : YES
>    Special allocation scheme  : YES
>    Integer size used          : unlimited
>    Thread safe support        : YES
>    Furtive read mode support  : YES
>    Detected system/CPU endian : little
> 
> but during restoring of a single file I found that the acl is not
> restored. The only options I use during restore are -x -g -I -R

You can check that the extended attributes storing the ACL are present
in the archive using:

   dar -l <archive> -alist-ea

or for a particular file:

   dar -l <archive> -alist-ea -g <some/file/in/the/archive>

Note: this feature is available since release 2.4.0.

If the EA is present, try restoring that file with verbose output (-v),
you should see dar trying to restore the EAs of that file, possibly
complaining that if failed and then giving the error returned by the system.

> 
> I have to add some other option to have acl restored?

No, by default dar saves as much as it can and restores as much as it
can too, issuing warning if it failed restoring something properly.
Options are always here to restrict this behavior (not restore all
files, not restore some EA, etc.)

> 
> Thank you very much
> 
> Piviul
> 

Kind Regards,
Denis.
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