From f105f448b33fc455498a3ce16c50003ed4c91b98 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andrius=20=C5=A0tikonas?= <andrius@stikonas.eu>
Date: Mon, 9 Oct 2017 23:56:15 +0100
Subject: [PATCH] Add a validator for LVM LV names.

---
 src/gui/newdialog.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/gui/newdialog.cpp b/src/gui/newdialog.cpp
index 2cc502a..ea1d6ab 100644
--- a/src/gui/newdialog.cpp
+++ b/src/gui/newdialog.cpp
@@ -115,6 +115,13 @@ void NewDialog::setupDialog()
         detailsButton->hide();
         dialogWidget().comboFileSystem().removeItem(dialogWidget().comboFileSystem().findText(QStringLiteral("lvm2 pv")));
         m_IsValidLVName = false;
+
+        /* LVM logical volume name can consist of: letters numbers _ . - +
+         * It cannot start with underscore _ and must not be equal to . or .. or any entry in /dev/
+         * QLineEdit accepts QValidator::Intermediate, so we just disable . at the beginning */
+        QRegularExpression re(QStringLiteral(R"(^(?!_|\.)[\w\-.+]+)"));
+        QRegularExpressionValidator *validator = new QRegularExpressionValidator(re, this);
+        dialogWidget().lvName().setValidator(validator);
     }
 
     dialogWidget().editPassphrase().setMinimumPasswordLength(1);