1 files changed, 75 insertions, 0 deletions
diff --git a/vmdb/plugins/virtuals_plugin.py b/vmdb/plugins/virtuals_plugin.py
new file mode 100644
index 0000000..60639ac
--- /dev/null
+++ b/vmdb/plugins/virtuals_plugin.py
@@ -0,0 +1,75 @@
+# Copyright 2017  Lars Wirzenius
+#
+# 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
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# =*= License: GPL-3+ =*=
+
+
+
+import logging
+import os
+
+import cliapp
+
+import vmdb
+
+
+class VirtualFilesystemMountPlugin(cliapp.Plugin):
+
+    def enable(self):
+        self.app.step_runners.add(VirtualFilesystemMountStepRunner())
+
+
+class VirtualFilesystemMountStepRunner(vmdb.StepRunnerInterface):
+
+    virtuals = [
+        ['none', '/proc', 'proc'],
+        ['none', '/dev', 'devtmpfs'],
+        ['none', '/dev/pts', 'devpts'],
+        ['none', '/dev/shm', 'tmpfs'],
+        ['none', '/run', 'tmpfs'],
+        ['none', '/run/lock', 'tmpfs'],
+        ['none', '/sys', 'sysfs'],
+    ]
+
+    def get_required_keys(self):
+        return ['mount-virtual-filesystems']
+
+    def run(self, step, settings, state):
+        fstag = step['mount-virtual-filesystems']
+        mount_point = state.mounts[fstag]
+        self.mount_virtuals(mount_point, state)
+
+    def teardown(self, step, settings, state):
+        self.unmount_virtuals(state)
+
+    def mount_virtuals(self, rootfs, state):
+        if not hasattr(state, 'virtuals'):
+            state.virtuals = []
+
+        for device, mount_point, fstype in self.virtuals:
+            path = os.path.join(rootfs, './' + mount_point)
+            if not os.path.exists(path):
+                os.mkdir(path)
+            vmdb.runcmd(['mount', '-t', fstype, device, path])
+            state.virtuals.append(path)
+        logging.debug('mounted virtuals: %r', state.virtuals)
+
+    def unmount_virtuals(self, state):
+        logging.debug('unmounting virtuals: %r', state.virtuals)
+        for mount_point in reversed(state.virtuals):
+            try:
+                vmdb.runcmd(['umount', mount_point])
+            except cliapp.AppException:
+                vmdb.error('Something went wrong while unmounting. Ignoring.')