[libvirt] [RFC] security_dac: don't chown iso file

Serge E. Hallyn serge.hallyn at canonical.com
Tue Oct 4 17:49:03 UTC 2011


Quoting Serge E. Hallyn (serge.hallyn at canonical.com):
> isos are read-only, so libvirt doesn't need to chown them.  In one of
> our testing setups, libvirt uses mirrorred isos.  Since libvirt chowns
> the files, (and especially does not chown them back) the mirror refuses
> to update the iso.
> 
> This patch prevents libvirt from chowning files.
> 
> Does this seem reasonable?

Hi,

any feedback on this?  Does it seem ok?

thanks,
-serge

> Signed-off-by: Serge Hallyn <serge.hallyn at canonical.com>
> ---
>  src/security/security_dac.c |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
> 
> diff --git a/src/security/security_dac.c b/src/security/security_dac.c
> index af02236..e7db324 100644
> --- a/src/security/security_dac.c
> +++ b/src/security/security_dac.c
> @@ -555,6 +555,8 @@ virSecurityDACSetSecurityAllLabel(virSecurityManagerPtr mgr,
>          /* XXX fixme - we need to recursively label the entire tree :-( */
>          if (vm->def->disks[i]->type == VIR_DOMAIN_DISK_TYPE_DIR)
>              continue;
> +	if (vm->def->disks[i]->device == VIR_DOMAIN_DISK_DEVICE_CDROM)
> +	    continue;
>          if (virSecurityDACSetSecurityImageLabel(mgr,
>                                                  vm,
>                                                  vm->def->disks[i]) < 0)
> -- 
> 1.7.5.4
> 
> --
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