On Thu, 2011-01-13 at 08:14 -0500, Stephen Smalley wrote: > On Wed, 2011-01-12 at 21:03 +0000, Paul Howarth wrote: > > On Wed, 12 Jan 2011 13:02:21 -0500 > > Daniel J Walsh <dwalsh@xxxxxxxxxx> wrote: > > > On 01/12/2011 06:29 AM, Paulo Cavalcanti wrote: > > > > Hi, > > > > > > > > I have two HDs on my computer: one with rhel5 5.5 and the other with > > > > fedora 14. > > > > Both systems share some directories located in a common /home, > > > > mainly used by the httpd process. > > > > > > > > The problem is that selinux in fedora 14 uses "unrestricted_u" by > > > > default for all users, which rel5 does not understand, > > > > and any file labeled that way is treated as "unlabeled_t" in rhel5. > > > > > > > > I tried to relabel all files in Fedora 14 using "chcon -R -u user_u > > > > -t user_home_t" , for instance, > > > > but every new file is still created as "unrestricted_u". > > > > > > > > I know very little about selinux, and I would like to know how to > > > > force all files in F14 to be user_u, > > > > but keeping the user owning those files, unrestricted. > > > > > > > > Is that possible? Is there a better solution for not having tons of > > > > denials in rhel5? > > > > > > > > Thanks. > > > > > > > > -- > > > > Paulo Roma Cavalcanti > > > > LCG - UFRJ > > > > > > > One solution would be to mount with a context on one of the platforms. > > > > > > On RHEL5 mount the users homedir with a context of nfs_t, and set the > > > boolean to say allow nfs homedirs > > > > > > > > > mount -o context="system_u:object_r:nfs_t:s0" /dev/ABC /home > > > setsebool -P use_nfs_home_dirs 1 > > > > What happens with newly-created files whilst booted in RHEL-5 in this > > case? What will Fedora 14 see them as? > > Not sure what the RHEL-5 kernel does; in modern kernels, it won't set a > context on disk when creating new files in a filesystem mounted with > context= and thus they will show up as unlabeled if mounted without a > context= mount option in Fedora-14. You could mount it with a context= > option in both, or run restorecon on it when booting Fedora-14. Sorry, not "unlabeled" but rather with the default file context for files without an xattr, which in this case would be file_t. -- Stephen Smalley National Security Agency -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
