Re: [Bug-cpio] cpio 2.9: sets unexpected (wrong?) file owner UID

[Radek Brich]

forwarding to the list...

----------  Forwarded Message  ----------

Subject: Re: [Bug-cpio] cpio 2.9: sets unexpected (wrong?) file owner UID
Date: út 26. února 2008
From: Radek Brich <address@hidden>
To: "Sergey Poznyakoff" <address@hidden>

On Tuesday 26 of February 2008 12:05:05 you wrote:
> Radek Brich <address@hidden> ha escrit:
> > On Tue 30. of October 2007 12:27:11 Alexey Stratonnikov wrote:
> > > When cpio archive is created as "find . -depth |cpio -o" and extracted
> > > as "cpio -i --make-directories" under root user, I get all directories
> > > owned by UID=0 no matter who was the owner of the directory when acrive
> > > was created.
> > >
> > > This may be shown as:
>
> [...]
>
> This test case works with the latest alpha version
> (ftp://alpha.gnu.org/gnu/cpio/cpio-2.9.90.tar.gz).
>
> Regards,
> Sergey

Hi Sergey,

I'm attaching few reproducers here -- only the 'no-depth' one works with 
cpio-2.9.90. I think the problem is in the delayed_set_stat. It remembers 
permissions of implicitly created directories and overwrites the permissions 
from archive with those when apply_delayed_set_stat() is called.

$ sudo ./cpio-dir-perm-depth ~/tmp/cpio-2.9.90/src/cpio
* Original permissions:
drwx------ 2 bin bin 4096 2008-02-26 13:33 a
* Extracted permissions:
drwxr-xr-x 2 root root 4096 2008-02-26 13:33 a

I wrote a patch for the 'find . -depth | cpio -o' case, so I'm attaching it 
too, though it's not exactly clean to be included...

-- 
Radek Brich
Base OS/core services
Red Hat, Brno, Czech Rep.

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cpio-dir-perm-depth
Description: application/shellscript

cpio-dir-perm-passthrough
Description: application/shellscript

cpio-dir-perm-no-depth
Description: application/shellscript

cpio-2.9-dir_perm.patch
Description: Text Data