From 6e6b3eb901069df5b343b49638c73b050f46b57e Mon Sep 17 00:00:00 2001
From: Niclas Berglind <nb@kjam.se>
Date: Wed, 12 Mar 2014 20:46:46 +0100
Subject: [PATCH] Added inherit method together with support method to Zvol
 class.

Signed-off-by: Niclas Berglind <nb@kjam.se>
---
 src/Zvol.php | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/src/Zvol.php b/src/Zvol.php
index c6fd20d..9ace6cf 100644
--- a/src/Zvol.php
+++ b/src/Zvol.php
@@ -135,6 +135,20 @@ class OMVModuleZFSZvol {
 		}
 	}
 
+	/**
+	 * Get single Datset property from commandline and update object property attribute
+	 * 
+	 * @param string $property Name of the property to update
+	 * @return void
+	 * @access private
+	 */
+	private function updateProperty($property) {
+		$cmd = "zfs get -H " . $property . " " . $this->name;
+		$this->exec($cmd,$out,$res);
+		$tmpary = preg_split('/\t+/', $out[0]);
+		$this->properties["$tmpary[1]"] = array("value" => $tmpary[2], "source" => $tmpary[3]);
+	}
+
 	/**
 	 * Create a Zvol on commandline. Optionally provide a number of properties to set.
 	 * 
@@ -167,6 +181,20 @@ class OMVModuleZFSZvol {
 		$this->exec($cmd,$out,$res);
 	}
 
+	/**
+	 * Clears a previously set proporty and specifies that it should be
+	 * inherited from it's parent.
+	 * 
+	 * @param string $property Name of the property to inherit.
+	 * @return void
+	 * @access public
+	 */
+	public function inherit($property) {
+		$cmd = "zfs inherit " . $property . " " . $this->name . " 2>&1";
+		$this->exec($cmd,$out,$res);
+		$this->updateProperty($property);
+	}
+
 	/**
 	 * Helper function to execute a command and throw an exception on error
 	 * (requires stderr redirected to stdout for proper exception message).
-- 
2.39.2