add initial tmpfs plugin and default options.

3 files changed, 40 insertions, 0 deletions

diff --git a/etc/mock/defaults.cfg b/etc/mock/defaults.cfg
index 2a68e0b..626ef99 100644
--- a/etc/mock/defaults.cfg
+++ b/etc/mock/defaults.cfg
@@ -60,8 +60,13 @@
 # config_opts['plugin_conf']['root_cache_enable'] = True
 # config_opts['plugin_conf']['root_cache_opts']['max_age_days'] = 15
 # config_opts['plugin_conf']['root_cache_opts']['dir'] = "%(cache_topdir)s/%(root)s/root_cache/"
+#
+# bind mount plugin is enabled by default but has no configured directories to mount
 # config_opts['plugin_conf']['bind_mount_enable'] = True
 # config_opts['plugin_conf']['bind_mount_opts']['dirs'].append(('/host/path', '/bind/mount/path/in/chroot/' ))
+#
+# config_opts['plugin_conf']['tmpfs_enable'] = False
+# config_opts['plugin_conf']['tmpfs_opts'] = {}
 
 #############################################################################
 #
diff --git a/py/mock.py b/py/mock.py
index 1c8a3aa..00bf291 100755
--- a/py/mock.py
+++ b/py/mock.py
@@ -229,6 +229,8 @@ def setup_default_config_opts(config_opts, unprivUid):
                 # ('/host/path', '/bind/mount/path/in/chroot/' ),
                 # ('/another/host/path', '/another/bind/mount/path/in/chroot/'),
                 ]},
+            'tmpfs_enable': False,
+            'tmpfs_opts': {},
             }
 
     # dependent on guest OS
diff --git a/py/mock/plugins/tmpfs.py b/py/mock/plugins/tmpfs.py
new file mode 100644
index 0000000..10cce33
--- /dev/null
+++ b/py/mock/plugins/tmpfs.py
@@ -0,0 +1,33 @@
+# vim:expandtab:autoindent:tabstop=4:shiftwidth=4:filetype=python:textwidth=0:
+# License: GPL2 or later see COPYING
+# Written by Michael Brown
+# Copyright (C) 2007 Michael E Brown <mebrown@michaels-house.net>
+
+# python library imports
+import os
+
+# our imports
+from mock.trace_decorator import decorate, traceLog, getLog
+import mock.util
+
+requires_api_version = "1.0"
+
+# plugin entry point
+decorate(traceLog())
+def init(rootObj, conf):
+    Tmpfs(rootObj, conf)
+
+# classes
+class Tmpfs(object):
+    """Mounts a tmpfs on the chroot dir"""
+    decorate(traceLog())
+    def __init__(self, rootObj, conf):
+        self.rootObj = rootObj
+        self.conf = conf
+        rootObj.addHook("preinit",  self._tmpfsPreInitHook)
+
+    decorate(traceLog())
+    def _tmpfsPreInitHook(self):
+        mountCmd = "mount -n -t tmpfs  mock_chroot_tmpfs %s" % self.makeChrootPath()
+        mock.util.do(mountCmd)
+