mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2025-01-22 04:25:18 +00:00
ae368ebfcc
BZ:https://bugzilla.redhat.com/show_bug.cgi?id=851981 When using macvtap, a character device gets first created by kernel with name /dev/tapN, its selinux context is: system_u:object_r:device_t:s0 Shortly, when udev gets notification when new file is created in /dev, it will then jump in and relabel this file back to the expected default context: system_u:object_r:tun_tap_device_t:s0 There is a time gap happened. Sometimes, it will have migration failed, AVC error message: type=AVC msg=audit(1349858424.233:42507): avc: denied { read write } for pid=19926 comm="qemu-kvm" path="/dev/tap33" dev=devtmpfs ino=131524 scontext=unconfined_u:system_r:svirt_t:s0:c598,c908 tcontext=system_u:object_r:device_t:s0 tclass=chr_file This patch will label the tapfd device before qemu process starts: system_u:object_r:tun_tap_device_t:MCS(MCS from seclabel->label)
LibVirt : simple API for virtualization
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.
Daniel Veillard <veillard@redhat.com>