From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Serge E. Hallyn" Subject: [PATCH 0/8] a start to credentials c/r Date: Tue, 26 May 2009 12:32:42 -0500 Message-ID: <20090526173242.GA13757@us.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline Sender: linux-security-module-owner@vger.kernel.org To: Oren Laadan Cc: Linux Containers , David Howells , Alexey Dobriyan , linux-security-module@vger.kernel.org List-Id: containers.vger.kernel.org Following is the next version of the credentials c/r patchset, on top of the c/r patchset at git://git.ncl.cs.columbia.edu/pub/git/linux-cr.git It implements checkpoint and restart of user, user namespaces, groups, supplementary groups, and struct cred. There is a question as to what to do about LSM data at restart. Right now I'm ignoring it, which means that prepare_creds() should ensure that the restart tasks get the context of the task calling sys_restart(). I suspect the right thing to do is to add two new LSM hooks, one which checks current's authorization to restart from the checkpoint file, and one which determines the task->cred->security filed based upon any of: 1. current_security() of the task calling sys_restart() 2. the task->cred->security checkpointed in the ckpt file 3. the ->security of the checkpoint file Oren, I think this version has all the changes you asked for except for restoring cred info for sysvipc. thanks, -serge