[Buildroot] Patchwork cleanup #8: submitter notification

Yann E. MORIN yann.morin.1998 at free.fr
Wed Apr 30 16:56:59 UTC 2014


Thomas, All,

On 2014-04-30 00:52 +0200, Thomas Petazzoni spake thusly:
> On Tue, 29 Apr 2014 23:09:05 +0200, Yann E. MORIN wrote:
> 
> > However, I can se one case where we would want to be able to set
> > ownership and/or permissions on a synlink: to avoid the identity of the
> > "builder" to seep down into the generated filesystem. But even in that
> > case, only the numerical UID would end up in the generated filesystem,
> > so it is not really a concern.
> 
> We do a "chown -R 0:0" on all files in the root filesystem, before
> taking into account device tables. So I don't see how an ownership on
> the build machine can leak into the generated root filesystem.

chown does not change the ownership of a symlink, only that of the
pointed-to entity:

    $ touch titi
    $ ln -s titi toto
    $ sudo chown root:root toto
    $ ls -l titi toto
    -rw-r--r-- 1 root   root   0 Apr 30 18:55 titi
    lrwxrwxrwx 1 ymorin ymorin 4 Apr 30 18:55 toto -> titi

So the symlink's ownership is not modified.

Regards,
Yann E. MORIN.

-- 
.-----------------.--------------------.------------------.--------------------.
|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
| +33 223 225 172 `------------.-------:  X  AGAINST      |  \e/  There is no  |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL    |   v   conspiracy.  |
'------------------------------^-------^------------------^--------------------'



More information about the buildroot mailing list