libvirt/src/security/apparmor/usr.sbin.virtxend.in
Jim Fehlig 405f479d0e apparmor: Add capabilities for PCI passthrough to virtxend profile
When splitting out the apparmor modular daemon profiles from the
libvirtd profile, the net_admin and sys_admin capabilities were
dropped from the virtxend profile. It was not known at the time
that these capabilities were needed for PCI passthrough. Without
the capabilities, the following messages are emitted from the audit
subsystem

audit: type=1400 audit(1702939277.946:63): apparmor="DENIED" \
operation="capable" class="cap" profile="virtxend" pid=3611 \
comm="rpc-virtxend" capability=21  capname="sys_admin"
audit: type=1400 audit(1702940304.818:63): apparmor="DENIED" \
operation="capable" class="cap" profile="virtxend" pid=3731 \
comm="rpc-virtxend" capability=12  capname="net_admin"

It appears sys_admin is needed to simply read from the PCI dev's
sysfs config file. The net_admin capability is needed when setting
the MAC address of an SR-IOV virtual function.

Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2023-12-19 08:53:32 -07:00

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#include <tunables/global>
profile virtxend @sbindir@/virtxend flags=(attach_disconnected) {
#include <abstractions/base>
#include <abstractions/dbus>
capability kill,
capability net_admin,
capability setgid,
capability setuid,
capability sys_admin,
capability sys_pacct,
capability ipc_lock,
network inet stream,
network inet dgram,
network inet6 stream,
network inet6 dgram,
network netlink raw,
network packet dgram,
network packet raw,
# for --p2p migrations
unix (send, receive) type=stream addr=none peer=(label=unconfined addr=none),
ptrace (read,trace) peer=unconfined,
signal (send) set=(kill, term, hup) peer=unconfined,
# Very lenient profile for virtxend
/ r,
/** rwmkl,
/bin/* PUx,
/sbin/* PUx,
/usr/bin/* PUx,
@sbindir@/virtlogd pix,
@sbindir@/* PUx,
/{usr/,}lib/udev/scsi_id PUx,
/usr/{lib,lib64}/xen-common/bin/xen-toolstack PUx,
/usr/{lib,lib64,libexec}/xen/bin/* Ux,
/usr/{lib,libexec}/xen-*/bin/libxl-save-helper PUx,
/usr/{lib,libexec}/xen-*/bin/pygrub PUx,
# force the use of virt-aa-helper
audit deny /{usr/,}sbin/apparmor_parser rwxl,
audit deny /etc/apparmor.d/libvirt/** wxl,
audit deny /sys/kernel/security/apparmor/features rwxl,
audit deny /sys/kernel/security/apparmor/matching rwxl,
audit deny /sys/kernel/security/apparmor/.* rwxl,
/sys/kernel/security/apparmor/profiles r,
@libexecdir@/* PUxr,
@libexecdir@/libvirt_parthelper ix,
@libexecdir@/libvirt_iohelper ix,
/etc/libvirt/hooks/** rmix,
/etc/xen/scripts/** rmix,
@BEGIN_APPARMOR_3@
include if exists <local/usr.sbin.virtxend>
@END_APPARMOR_3@
}