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zjing
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disk_operations.py
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237
disk_operations.py
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# disk_operations.py
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import os
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import logging
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from PySide6.QtWidgets import QMessageBox, QInputDialog
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from system_info import SystemInfoManager # 引入 SystemInfoManager 来复用 _run_command
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logger = logging.getLogger(__name__) # 获取当前模块的 logger 实例
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class DiskOperations:
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def __init__(self):
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self.system_manager = SystemInfoManager() # 复用 SystemInfoManager 的命令执行器
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def _get_device_path(self, device_name):
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"""
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辅助函数：将设备名（如 'sda1'）转换为完整路径（如 '/dev/sda1'）。
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"""
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if not device_name.startswith('/dev/'):
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return f'/dev/{device_name}'
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return device_name
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def mount_partition(self, device_name, mount_point=None):
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"""
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挂载指定的分区。
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如果未提供挂载点，会尝试查找现有挂载点或提示用户输入。
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"""
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dev_path = self._get_device_path(device_name)
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logger.info(f"尝试挂载设备: {dev_path}")
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if not mount_point:
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# 尝试从系统信息中获取当前挂载点
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devices = self.system_manager.get_block_devices()
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found_mount_point = None
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for dev in devices:
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if dev.get('name') == device_name:
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found_mount_point = dev.get('mountpoint')
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break
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if 'children' in dev:
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for child in dev['children']:
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if child.get('name') == device_name:
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found_mount_point = child.get('mountpoint')
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break
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if found_mount_point:
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break
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if found_mount_point and found_mount_point != '[SWAP]' and found_mount_point != '':
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# 如果设备已经有挂载点，并且不是SWAP，则直接使用
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mount_point = found_mount_point
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logger.info(f"设备 {dev_path} 已经挂载到 {mount_point}。")
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QMessageBox.information(None, "信息", f"设备 {dev_path} 已经挂载到 {mount_point}。")
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return True # 已经挂载，视为成功
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else:
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# 如果没有挂载点，或者挂载点是SWAP，则提示用户输入
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mount_point, ok = QInputDialog.getText(None, "挂载分区",
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f"请输入 {dev_path} 的挂载点 (例如: /mnt/data):",
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text=f"/mnt/{device_name}")
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if not ok or not mount_point:
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logger.info("用户取消了挂载操作或未提供挂载点。")
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return False
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# 确保挂载点目录存在
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if not os.path.exists(mount_point):
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try:
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os.makedirs(mount_point, exist_ok=True)
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logger.info(f"创建挂载点目录: {mount_point}")
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except OSError as e:
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logger.error(f"创建挂载点目录失败 {mount_point}: {e}")
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QMessageBox.critical(None, "错误", f"创建挂载点目录失败: {e}")
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return False
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try:
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stdout, stderr = self.system_manager._run_command(["mount", dev_path, mount_point], root_privilege=True)
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logger.info(f"成功挂载 {dev_path} 到 {mount_point}")
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QMessageBox.information(None, "成功", f"成功挂载 {dev_path} 到 {mount_point}")
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return True
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except Exception as e:
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logger.error(f"挂载 {dev_path} 失败: {e}")
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QMessageBox.critical(None, "错误", f"挂载 {dev_path} 失败: {e}")
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return False
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def unmount_partition(self, device_name):
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"""
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卸载指定的分区。
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"""
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dev_path = self._get_device_path(device_name)
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logger.info(f"尝试卸载设备: {dev_path}")
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# 尝试从系统信息中获取当前挂载点
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current_mount_point = None
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devices = self.system_manager.get_block_devices()
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for dev in devices:
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if dev.get('name') == device_name:
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current_mount_point = dev.get('mountpoint')
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break
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if 'children' in dev:
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for child in dev['children']:
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if child.get('name') == device_name:
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current_mount_point = child.get('mountpoint')
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break
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if current_mount_point:
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break
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if not current_mount_point or current_mount_point == '[SWAP]' or current_mount_point == '':
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logger.warning(f"设备 {dev_path} 未挂载或无法确定挂载点，无法卸载。")
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QMessageBox.warning(None, "警告", f"设备 {dev_path} 未挂载或无法确定挂载点，无法卸载。")
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return False
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try:
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# 尝试通过挂载点卸载，通常更可靠
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stdout, stderr = self.system_manager._run_command(["umount", current_mount_point], root_privilege=True)
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logger.info(f"成功卸载 {current_mount_point} ({dev_path})")
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QMessageBox.information(None, "成功", f"成功卸载 {current_mount_point} ({dev_path})")
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return True
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except Exception as e:
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logger.error(f"卸载 {current_mount_point} ({dev_path}) 失败: {e}")
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QMessageBox.critical(None, "错误", f"卸载 {current_mount_point} ({dev_path}) 失败: {e}")
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return False
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def delete_partition(self, device_name):
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"""
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删除指定的分区。
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此操作不可逆，会丢失数据。
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"""
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dev_path = self._get_device_path(device_name)
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logger.info(f"尝试删除分区: {dev_path}")
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# 安全检查: 确保是分区，而不是整个磁盘
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# 简单的检查方法是看设备名是否包含数字 (如 sda1, nvme0n1p1)
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if not any(char.isdigit() for char in device_name):
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QMessageBox.warning(None, "警告", f"{dev_path} 看起来不是一个分区。为安全起见，不执行删除操作。")
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logger.warning(f"尝试删除整个磁盘 {dev_path}，已阻止。")
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return False
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reply = QMessageBox.question(None, "确认删除分区",
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f"你确定要删除分区 {dev_path} 吗？\n"
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"此操作不可逆，将导致数据丢失！",
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QMessageBox.Yes | QMessageBox.No, QMessageBox.No)
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if reply == QMessageBox.No:
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logger.info(f"用户取消了删除分区 {dev_path} 的操作。")
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return False
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# 首先尝试卸载分区（如果已挂载）
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try:
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# umount 如果设备未挂载会返回非零退出码，所以这里 check_output=False
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self.system_manager._run_command(["umount", dev_path], root_privilege=True, check_output=False)
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logger.info(f"尝试卸载 {dev_path} (如果已挂载)。")
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except Exception as e:
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logger.warning(f"卸载 {dev_path} 失败或未挂载: {e}")
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# 继续执行，因为即使卸载失败也可能能删除
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# 使用 parted 来删除分区
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# parted 需要父磁盘设备名和分区号
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# 例如，对于 /dev/sda1，需要 /dev/sda 和分区号 1
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partition_number_str = ''.join(filter(str.isdigit, device_name)) # 从 sda1 提取 "1"
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if not partition_number_str:
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QMessageBox.critical(None, "错误", f"无法从 {device_name} 解析分区号。")
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logger.error(f"无法从 {device_name} 解析分区号。")
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return False
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parent_disk_name = device_name.rstrip(partition_number_str) # 从 sda1 提取 "sda"
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parent_disk_path = self._get_device_path(parent_disk_name)
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try:
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# parted -s /dev/sda rm 1
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stdout, stderr = self.system_manager._run_command(
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["parted", "-s", parent_disk_path, "rm", partition_number_str],
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root_privilege=True
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)
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logger.info(f"成功删除分区 {dev_path}")
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QMessageBox.information(None, "成功", f"成功删除分区 {dev_path}")
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return True
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except Exception as e:
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logger.error(f"删除分区 {dev_path} 失败: {e}")
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QMessageBox.critical(None, "错误", f"删除分区 {dev_path} 失败: {e}")
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return False
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def format_partition(self, device_name, fstype=None):
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"""
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格式化指定的分区。
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此操作不可逆，会丢失数据。
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"""
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dev_path = self._get_device_path(device_name)
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logger.info(f"尝试格式化分区: {dev_path}")
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# 安全检查: 确保是分区
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if not any(char.isdigit() for char in device_name):
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QMessageBox.warning(None, "警告", f"{dev_path} 看起来不是一个分区。为安全起见，不执行格式化操作。")
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logger.warning(f"尝试格式化整个磁盘 {dev_path}，已阻止。")
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return False
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if not fstype:
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# 提示用户选择文件系统类型
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fstypes = ["ext4", "xfs", "fat32", "ntfs"] # 常用文件系统
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fstype, ok = QInputDialog.getItem(None, "格式化分区",
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f"请选择 {dev_path} 的文件系统类型:",
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fstypes, 0, False) # 默认选择 ext4
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if not ok or not fstype:
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logger.info("用户取消了格式化操作或未选择文件系统。")
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return False
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reply = QMessageBox.question(None, "确认格式化分区",
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f"你确定要格式化分区 {dev_path} 为 {fstype} 吗？\n"
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"此操作不可逆，将导致数据丢失！",
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QMessageBox.Yes | QMessageBox.No, QMessageBox.No)
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if reply == QMessageBox.No:
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logger.info(f"用户取消了格式化分区 {dev_path} 的操作。")
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return False
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# 首先尝试卸载分区（如果已挂载）
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try:
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self.system_manager._run_command(["umount", dev_path], root_privilege=True, check_output=False)
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logger.info(f"尝试卸载 {dev_path} (如果已挂载)。")
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except Exception as e:
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logger.warning(f"卸载 {dev_path} 失败或未挂载: {e}")
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# 执行 mkfs 命令
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try:
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mkfs_cmd = []
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if fstype == "ext4":
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mkfs_cmd = ["mkfs.ext4", "-F", dev_path] # -F 强制执行
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elif fstype == "xfs":
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mkfs_cmd = ["mkfs.xfs", "-f", dev_path] # -f 强制执行
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elif fstype == "fat32":
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mkfs_cmd = ["mkfs.fat", "-F", "32", dev_path]
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elif fstype == "ntfs":
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mkfs_cmd = ["mkfs.ntfs", "-f", dev_path] # -f 强制执行
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else:
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raise ValueError(f"不支持的文件系统类型: {fstype}")
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stdout, stderr = self.system_manager._run_command(mkfs_cmd, root_privilege=True)
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logger.info(f"成功格式化分区 {dev_path} 为 {fstype}")
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QMessageBox.information(None, "成功", f"成功格式化分区 {dev_path} 为 {fstype}")
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return True
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except Exception as e:
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logger.error(f"格式化分区 {dev_path} 失败: {e}")
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QMessageBox.critical(None, "错误", f"格式化分区 {dev_path} 失败: {e}")
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return False
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