feat: Exclude removable devices when creating logical volume groups

When a user creates and mounts a logical volume on a removable device
using deepin-diskmanager, there's no graphical way to stop the logical
volume except by deleting the logical volume group.
This prevents the user from safely removing the removable device, and
even if they do manage to remove it safely, subsequent mounts of the
logical volume will fail because it wasn't stopped. Therefore, let's
exclude removable devices when creating logical volume groups.

Log: Exclude removable devices when creating logical volume groups
Bug: https://pms.uniontech.com/bug-view-340061.html

Author: wangrong1069

application/widgets/createvgwidget.cpp

@@ -1140,6 +1140,34 @@ void CreateVGWidget::updateData()
     qDebug() << "CreateVGWidget::updateData completed";
 }
 
+static bool isDeviceRemovable(const QString &devicePath)
+{
+    QFileInfo deviceInfo(devicePath);
+    QString deviceName = deviceInfo.fileName(); // e.g., "sda"
+
+    QString sysfsRemovablePath = QString("/sys/block/%1/removable").arg(deviceName);
+    QFile removableFile(sysfsRemovablePath);
+    bool removable = false;
+    QByteArray content;
+
+    if (!removableFile.exists()) {
+        qWarning() << "Sysfs path does not exist:" << sysfsRemovablePath;
+        goto quit;
+    }
+
+    if (!removableFile.open(QIODevice::ReadOnly | QIODevice::Text)) {
+        qWarning() << "Could not open sysfs removable file:" << sysfsRemovablePath;
+        goto quit;
+    }
+
+    content = removableFile.readAll().trimmed(); // trimmed() 移除换行符和空格
+    removable = (content == "1");
+
+quit:
+    qDebug() << "isDeviceRemovable:" << devicePath << removable;
+    return removable;
+}
+
 QList<DeviceInfo> CreateVGWidget::createAvailableDiskData()
 {
     qDebug() << "CreateVGWidget::createAvailableDiskData called.";
@@ -1155,6 +1183,11 @@ QList<DeviceInfo> CreateVGWidget::createAvailableDiskData()
             continue;
         }
 
+        // 排除可移动设备
+        if (isDeviceRemovable(info.m_path)) {
+            continue;
+        }
+
         // 排除已加入VG的磁盘以及分区表错误的磁盘
         if (isJoinAllVG.value(info.m_path) == "false") {//还需加上磁盘分区表是否错误的判断
             PartitionVec lstNewPartition;