From 5fb291d42a5a9e268507890a74ca6e6084f7575c Mon Sep 17 00:00:00 2001
From: Guido Günther <agx@sigxcpu.org>
Date: Mon, 17 Mar 2014 10:44:40 +0100
Subject: Allow to blacklist services

This allows to exclude services that we never want restarted like
/etc/init.d/kvm which is responsible for loading the kvm module.

It also allows us to exclude services on a per package basis. E.g.
changes in libvirtd only need libvirt-bin but not libvirt-guests
restarted since this just safes and restores all vms.
---
 whatmaps | 26 ++++++++++++++++++++++++--
 1 file changed, 24 insertions(+), 2 deletions(-)

diff --git a/whatmaps b/whatmaps
index 155a56c..74168c3 100755
--- a/whatmaps
+++ b/whatmaps
@@ -1,7 +1,7 @@
 #!/usr/bin/python -u
 # vim: set fileencoding=utf-8 :
 #
-# (C) 2010 Guido Guenther <agx@sigxcpu.org>
+# (C) 2010,2014 Guido Günther <agx@sigxcpu.org>
 #   This program is free software: you can redistribute it and/or modify
 #   it under the terms of the GNU General Public License as published by
 #   the Free Software Foundation, either version 3 of the License, or
@@ -95,6 +95,9 @@ class Distro(object):
     @cvar id: distro id as returned by lsb-release
     """
     id = None
+    service_blacklist = set()
+    _pkg_services = {}
+    _pkg_blacklist = {}
 
     @classmethod
     def pkg(klass, name):
@@ -127,6 +130,17 @@ class Distro(object):
         except (KeyError, AttributeError):
             return []
 
+    @classmethod
+    def pkg_service_blacklist(klass, pkg):
+        """
+        List of services in pkg that we don't want to be restarted even when
+        a binary from this package maps a shared lib that changed.
+        """
+        try:
+            return klass._pkg_service_blacklist[pkg.name]
+        except KeyError:
+            return []
+
     @classmethod
     def has_apt(klass):
         """Does the distribution use apt"""
@@ -191,6 +205,12 @@ class DebianDistro(Distro):
                       'exim4-daemon-heavy':  [ 'exim4' ],
                     }
 
+    # Per package blacklist
+    _pkg_service_blacklist = { 'libvirt-bin': [ 'libvirt-guests' ] }
+
+    # Per distro blacklist
+    service_blacklist = set(['kvm', 'qemu-kvm', 'qemu-system-x86'])
+
     @classmethod
     def pkg(klass, name):
         return DebianPkg(name)
@@ -549,12 +569,14 @@ def main(argv):
     all_services = set()
     try:
         for pkg in pkgs.values():
-            services = pkg.services + distro.pkg_services(pkg)
+            services = set(pkg.services + distro.pkg_services(pkg))
+            services -= set(distro.pkg_service_blacklist(pkg))
             if not services:
                 logging.warning("No service script found in '%s' for '%s' "
                                 "- restart manually" % (pkg.name, pkg.procs))
             else:
                 all_services.update(services)
+        all_services -= distro.service_blacklist
     except NotImplementedError:
         if level > logging.INFO:
             logging.error("Getting Service listing not implemented "
-- 
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