From f1fe98e64bb8c13b5321598e60b875bf0271913f Mon Sep 17 00:00:00 2001
From: Niclas Berglind <nb@kjam.se>
Date: Sat, 22 Mar 2014 14:14:38 +0100
Subject: [PATCH] Added Snapshot to Zvol class.

Signed-off-by: Niclas Berglind <nb@kjam.se>
---
 src/Zvol.php | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/src/Zvol.php b/src/Zvol.php
index 47701dc..f2d3cd2 100644
--- a/src/Zvol.php
+++ b/src/Zvol.php
@@ -1,6 +1,7 @@
 <?php
 require_once("Exception.php");
 require_once("openmediavault/util.inc");
+require_once("Snapshot.php");
 
 /**
  * XXX detailed description
@@ -36,6 +37,14 @@ class OMVModuleZFSZvol {
 	 */
 	private $properties;
 
+	/**
+	 * Array with Snapshots associated to the Zvol
+	 * 
+	 * @var     array $snapshots
+	 * @access private
+	 */
+	private $snapshots;
+
 	// Associations
 	// Operations
 
@@ -59,6 +68,14 @@ class OMVModuleZFSZvol {
 				continue;
 			}
 		}
+		$qname = preg_quote($name . "@", '/');
+		$cmd = "zfs list -H -t snapshot 2>&1";
+		$this->exec($cmd, $out, $res);
+		foreach ($out as $line) {
+			if (preg_match('/^(' . $qname . '[^\s]+)\t.*$/', $line, $res)) {
+				$this->snapshots[$res[1]] = new OMVModuleZFSSnapshot($res[1]);
+			}
+		}
 	}
 
 	/**
@@ -208,6 +225,33 @@ class OMVModuleZFSZvol {
 		$this->updateProperty($property);
 	}
 
+	/**
+	 * Creates a Snapshot and adds it to the existing list of snapshots associated
+	 * with the Zvol.
+	 * 
+	 * @param string $snap_name Name of the Snapshot to create.
+	 * @param array $properties Optional array of properties to set on Snapshot
+	 * @return void
+	 * @access public
+	 */
+	public function addSnapshot($snap_name, array $properties = null) {
+		$snap = new OMVModuleZFSSnapshot($snap_name);
+		$snap->create($properties);
+		$this->snapshots[$snap_name] = $snap;
+	}
+
+	/**
+	 * Destroys a Snapshot on commandline and removes it from the Zvol.
+	 * 
+	 * @param string $snap_name Name of the Snapshot to delete.
+	 * @return void
+	 * @access public
+	 */
+	public function deleteSnapshot($snap_name) {
+		$this->snapshots[$snap_name]->destroy();
+		unset($this->snapshots[$snap_name]);
+	}
+
 	/**
 	 * Helper function to execute a command and throw an exception on error
 	 * (requires stderr redirected to stdout for proper exception message).
-- 
2.39.2