1 files changed, 38 insertions, 0 deletions
diff --git a/vmdb/plugins/zerofree_plugin.py b/vmdb/plugins/zerofree_plugin.py
new file mode 100644
index 0000000..a22fa46
--- /dev/null
+++ b/vmdb/plugins/zerofree_plugin.py
@@ -0,0 +1,38 @@
+# Copyright 2021  Andy Piper
+#
+# 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 vmdb
+
+
+class ZerofreePlugin(vmdb.Plugin):
+    def enable(self):
+        self.app.step_runners.add(ZerofreeStepRunner())
+
+
+class ZerofreeStepRunner(vmdb.StepRunnerInterface):
+    def get_key_spec(self):
+        return {"zerofree": str}
+
+    def run(self, values, settings, state):
+        tag = values["zerofree"]
+        dev = state.tags.get_dev(tag)
+        mount_point = state.tags.get_builder_mount_point(tag)
+        try:
+            vmdb.runcmd(["mount", "-o", "remount,ro", mount_point])
+            vmdb.runcmd(["zerofree", "-v", dev])
+        finally:
+            vmdb.runcmd(["mount", "-o", "remount,rw", mount_point])