qemu_cgroup: Expose defaultDeviceACL

This is a list of devices that qemu needs for its run (apart from
what's configured for domain). The devices on the list are
enabled in the CGroups by default so they will be good candidates
for initial /dev for new qemu.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

src/qemu/qemu_cgroup.c

@@ -42,7 +42,7 @@
 
 VIR_LOG_INIT("qemu.qemu_cgroup");
 
-static const char *const defaultDeviceACL[] = {
+const char *const defaultDeviceACL[] = {
     "/dev/null", "/dev/full", "/dev/zero",
     "/dev/random", "/dev/urandom",
     "/dev/ptmx", "/dev/kvm", "/dev/kqemu",

src/qemu/qemu_cgroup.h

@@ -76,4 +76,5 @@ int qemuCgroupEmulatorAllNodesAllow(virCgroupPtr cgroup,
                                     qemuCgroupEmulatorAllNodesDataPtr *data);
 void qemuCgroupEmulatorAllNodesRestore(qemuCgroupEmulatorAllNodesDataPtr data);
 
+extern const char *const defaultDeviceACL[];
 #endif /* __QEMU_CGROUP_H__ */