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Re: [libvir] [PATCH] Bad permissions on /var/run/libvirt/



On Mon, Apr 14, 2008 at 07:37:56PM +0400, Anton Protopopov wrote:
> Hi,
> 
> Non-root can't use /var/run/libvirt/libvirt-sock even in the case
> "unix_sock_group" and "unix_sock_rw_perms" are set properly.
> 
> The reason:
>    # ls -l /var/run /var/run/libvirt | grep libvirt | grep -v pid
>    drwx------ 2 root root   4096 Apr 14 19:14 libvirt
>    srwxrwx--- 1 root libvirt 0 Apr 14 19:14 libvirt-sock
>    srwxrwxrwx 1 root libvirt 0 Apr 14 19:14 libvirt-sock-ro
> 
> i.e., bad permissions on /var/run/libvirt

  Hum, how did you get this ? Maybe this is more a packaging problem than
anything else, I have this here:

[root paphio ~]# rpm -qf /var/run/libvirt
libvirt-0.4.1-3.fc8
[root paphio ~]# rpm -V libvirt
[root paphio ~]# ls -ld /var/run/libvirt 
drwxr-xr-x 2 root root 4096 2008-04-04 18:00 /var/run/libvirt
[root paphio ~]# ls -l /var/run/libvirt 
total 0
srwxrwxrwx 1 root root 0 2008-03-29 14:56 libvirt-sock
srwxrwxrwx 1 root root 0 2008-03-29 14:56 libvirt-sock-ro
[root paphio ~]#

> One possible solution (implied in the attached patch) is the following:
> 
> Every time libvirtd starts
> * it implicitly sets the group id of /var/run/libvirt:
>         chown(/var/run/libvirt, -1, unix_sock_gid).
> * if "unix_sock_group" defined in /etc/libvirt/libvirtd.conf, libvirtd does
>          chmod g+x /var/run/libvirt
>    otherwise,
>          chmod g-x /var/run/libvirt

  I don't know, that's doable too, but if there is a packaging problem
maybe it's good to have it fixed instead of changing permissions at 
runtime. But the configuration data should override this, that's true.
What do others think ?

Daniel

-- 
Red Hat Virtualization group http://redhat.com/virtualization/
Daniel Veillard      | virtualization library  http://libvirt.org/
veillard redhat com  | libxml GNOME XML XSLT toolkit  http://xmlsoft.org/
http://veillard.com/ | Rpmfind RPM search engine  http://rpmfind.net/


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