diff --git a/inc/schedule_store.inc b/inc/schedule_store.inc
new file mode 100644
--- /dev/null
+++ b/inc/schedule_store.inc
@@ -0,0 +1,157 @@
+<?php
+/*
+ * Copyright 2010 Nathan Phillip Brink <ohnobinki@ohnopublishing.net>
+ *
+ * This file is a part of slate_permutate.
+ *
+ * slate_permutate is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * slate_permutate 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with slate_permutate.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+require_once('class.schedule.php');
+
+/**
+ * \brief
+ *   Initialize a schedule_store.
+ *
+ * \param $dir
+ *   Directory to use as the schedule storage.
+ * \return
+ *   A schedule_store handle or NULL on failure.
+ */
+function schedule_store_init($dir = 'saved_schedules')
+{
+  $schedule_store = array();
+
+  if (!is_dir($dir) || !is_writable($dir))
+    {
+      error_log('I can\'t write to ' . $dir . ' or it is not a directory!');
+      return NULL;
+    }
+
+  $schedule_store['dir'] = realpath($dir);
+
+  return $schedule_store;
+}
+
+/**
+ * \brief
+ *   Store a saved schedule into the schedule storage.
+ *
+ * \param $schedule_store
+ *   The schedule_store handle from schedule_store_init().
+ * \param $schedule
+ *   The schedule object of type Schedule.
+ * \return
+ *   The newly-saved schedules global ID (numeric) or NULL on error.
+ */
+function schedule_store_store($schedule_store, $schedule)
+{
+  $tempfile_name = tempnam($schedule_store['dir'], 'sch');
+
+  $new_schedule_id_name = tempnam($schedule_store['dir'], 'id');
+  $new_schedule_id_file = fopen($new_schedule_id_name, 'wb');
+
+  _schedule_store_flock_grab($schedule_store, LOCK_EX);
+  /* if the file doesn't exist, we'll end up with a value of 1 for our first entry. */
+  $schedule_id = (int)file_get_contents($schedule_store['dir'] . DIRECTORY_SEPARATOR . 'lastid');
+  $new_schedule_id = $schedule_id + 1;
+  fwrite($new_schedule_id_file, $new_schedule_id);
+  fclose($new_schedule_id_file);
+  rename($new_schedule_id_name, $schedule_store['dir'] . DIRECTORY_SEPARATOR . 'lastid');
+  _schedule_store_flock_release($schedule_store);
+
+  /* we need to serialize the schedule _after_ giving it an ID */
+  $schedule->id_set($new_schedule_id);
+  file_put_contents($tempfile_name, serialize($schedule));
+
+  rename($tempfile_name, $schedule_store['dir'] . DIRECTORY_SEPARATOR . $new_schedule_id);
+
+  return $new_schedule_id;
+}
+
+/**
+ * \brief
+ *   Retrieve a stored saved schedule from the schedule storage.
+ *
+ * \param $schedule_store
+ *   The schedule_store handle from which to retrieve the saved
+ *   schedule.
+ * \param $schedule_id
+ *   The saved schedule's globally-accessible ID. This value must have
+ *   been returned from schedule_store_store() at one point.
+ * \return
+ *   A Schedule object whose ID was $schedule_id or NULL if
+ *   $schedule_id is an invalid or not-yet-allocated schedule
+ *   identifier.
+ */
+function schedule_store_retrieve($schedule_store, $schedule_id)
+{
+  if (strcmp($schedule_id, (int)$schedule_id))
+    return NULL;
+  $schedule_id = (int)$schedule_id;
+
+  $schedule_serialized = file_get_contents($schedule_store['dir'] . DIRECTORY_SEPARATOR . $schedule_id);
+  if ($schedule_serialized === FALSE)
+    return NULL;
+
+  $schedule = unserialize($schedule_serialized);
+  if ($schedule === FALSE)
+    return NULL;
+  return $schedule;
+}
+
+/**
+ * \brief
+ *   Delete a saved schedule.
+ *
+ * \param $schedule_store
+ *   The store from which to delete the schedule.
+ * \param $schedule_id
+ *   The identifier of the schedule to delete.
+ */
+function schedule_store_delete($schedule_store, $schedule_id)
+{
+  $remove_filename = $schedule_store['dir'] . DIRECTORY_SEPARATOR . $schedule_id;
+  /* avoid an E_WARNING if the file doesn't exist */
+  if (file_exists($remove_filename))
+    remove($remove_filename);
+}
+
+/**
+ * \brief
+ *   Obtains a lock on the /lastid file in the schedule_store.
+ *
+ * \see _schedule_store_flock_release().
+ *
+ * \param $schedule_store
+ *   The schedule_store instance we're working with.
+ * \param $operation
+ *   Which flock() operation to perform: valid are LOCK_SH and LOCK_EX.
+ */
+function _schedule_store_flock_grab(&$schedule_store, $operation)
+{
+  $schedule_store['lastid_flock_file'] = fopen($schedule_store['dir'] . DIRECTORY_SEPARATOR . 'lastid.flock', 'c');
+  return flock($schedule_store['lastid_flock_file'], $operation);
+}
+
+/**
+ * \brief
+ *   Release a lock grabbed with _schedule_store_flock_grab().
+ */
+function _schedule_store_flock_release(&$schedule_store)
+{
+  flock($schedule_store['lastid_flock_file'], LOCK_UN);
+  fclose($schedule_store['lastid_flock_file']);
+  unset($schedule_store['lastid_flock_file']);
+}