Libvirt-socket-rw and libvirt-socket-ro are not used only for libvirt or root user,
but also for unprivileged application such as vdsm,
Restrain the rundir only read/search for libvirt prevent comunication
with unprivileged client,change rundir the permission equals to the sockets permission.
See bug:
https://bugzilla.redhat.com/show_bug.cgi?id=828073

Signed-off-by: lvroyce <lvroyce@linux.vnet.ibm.com>
---
daemon/libvirtd.c |    2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/daemon/libvirtd.c b/daemon/libvirtd.c
index c74cd43..6095072 100644
--- a/daemon/libvirtd.c
+++ b/daemon/libvirtd.c
@@ -293,7 +293,7 @@ daemonUnixSocketPaths(struct daemonConfig *config,
             if (!(rundir = virGetUserRuntimeDirectory()))
                 goto error;

-            old_umask = umask(077);
+            old_umask = umask(022);
             if (virFileMakePath(rundir) < 0) {
                 umask(old_umask);
                 goto error;