[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH v3 0/8] xen: xen-domid-restrict improvements
From: |
Ian Jackson |
Subject: |
[Qemu-devel] [PATCH v3 0/8] xen: xen-domid-restrict improvements |
Date: |
Fri, 6 Oct 2017 19:27:16 +0100 |
I have been working on trying to get qemu, when running as a Xen
device model, to _actually_ not have power equivalent to root.
I think I have achieved this, with some limitations (which are
discussed in my series against xen.git.
However, there are changes to qemu needed. In particular
* The -xen-domid-restrict option does not work properly right now.
It only restricts a small subset of the descriptors qemu has open.
I am introducing a new library call in the Xen libraries for this,
xentoolcore_restrict_all.
* We need to call a different function on domain shutdown.
* The restriction operation needs to be done at a slightly different
time, necessitating a new hook.
* Additionally, in the future, we intend to be able to set aside
a uid range for these qemus to run in, and that involves being
able to tell qemu to drop privilege by numeric uid and gid.
Thanks to Anthony Perard, Peter Maydell and Ross Lagerwall for
assistance, review and testing.
At least the first patch of this, "xen: link against xentoolcore",
will very likely be necessary, since the corresponding xen.git series
is likely to make Xen 4.10.
Ian.
- [Qemu-devel] [PATCH v3 0/8] xen: xen-domid-restrict improvements,
Ian Jackson <=
- [Qemu-devel] [PATCH 2/8] xen: restrict: use xentoolcore_restrict_all, Ian Jackson, 2017/10/06
- [Qemu-devel] [PATCH 3/8] xen: defer call to xen_restrict until just before os_setup_post, Ian Jackson, 2017/10/06
- [Qemu-devel] [PATCH 4/8] xen: destroy_hvm_domain: Move reason into a variable, Ian Jackson, 2017/10/06
- [Qemu-devel] [PATCH 7/8] os-posix: Provide new -runasid option, Ian Jackson, 2017/10/06
- [Qemu-devel] [PATCH 8/8] RFC configure: do_compiler: Dump some extra info under bash, Ian Jackson, 2017/10/06
- [Qemu-devel] [PATCH 1/8] xen: link against xentoolcore, Ian Jackson, 2017/10/06
- [Qemu-devel] [PATCH 6/8] xen: destroy_hvm_domain: Try xendevicemodel_shutdown, Ian Jackson, 2017/10/06
- [Qemu-devel] [PATCH 5/8] xen: move xc_interface compatibility fallback further up the file, Ian Jackson, 2017/10/06
- Re: [Qemu-devel] [PATCH v3 0/8] xen: xen-domid-restrict improvements, no-reply, 2017/10/06