Show next available epair device

lattera · Mar 1, 2012 · 87b48c1 · 87b48c1
1 parent 2129085
commit 87b48c1
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Showing 2 changed files with 18 additions and 1 deletion.
diff --git a/classes/NetworkDevice.php b/classes/NetworkDevice.php
@@ -89,6 +89,23 @@ public static function IsDeviceAvailable($device) {
         return TRUE;
     }
 
+    public static function NextAvailableDevice() {
+        $result = db_query('SELECT device FROM {jailadmin_epairs}');
+
+        $id = 0;
+        foreach ($result as $record) {
+            $i = substr($record->device, strlen("epair"));
+            if (intval($i) > $id)
+                $id = intval($i);
+        }
+
+        for (++$id; ; $id++)
+            if (NetworkDevice::IsDeviceAvailable("epair{$id}"))
+                break;
+
+        return $id;
+    }
+
     public function Create() {
         if (NetworkDevice::IsDeviceAvailable($this->device) == FALSE)
             return FALSE;

diff --git a/jailconfig.inc b/jailconfig.inc
@@ -78,7 +78,7 @@ function jailadmin_config($form, &$form_state) {
         '#type' => 'textfield',
         '#title' => t('New Device Name'),
         '#size' => 60,
-        '#description' => t('e.g. epair0'),
+        '#description' => t('e.g. epair@device', array('@device' => NetworkDevice::NextAvailableDevice())),
         '#disabled' => $jail->IsOnline() || $readonly,
     );