From 9dc44739411aad11041738853309f37df13d586d Mon Sep 17 00:00:00 2001
From: zj <1052308357@qq.com>
Date: Thu, 12 Feb 2026 02:55:48 +0800
Subject: [PATCH] 11

---
 backend.py | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/backend.py b/backend.py
index 6b00b92..2c236e8 100644
--- a/backend.py
+++ b/backend.py
@@ -1631,6 +1631,7 @@ def check_and_restore_kernel(mount_point: str, distro_type: str, has_separate_bo
                 chroot_cmd_prefix + ["dracut", "-f", f"/boot/initramfs-{kernel_ver}.img", kernel_ver],
                 f"生成 initramfs for {kernel_ver}",
                 timeout=120
+
             )
         
         if success:
@@ -2165,6 +2166,49 @@ def chroot_and_repair_grub(mount_point: str, target_disk: str,
     log_info(f"使用命令: {' '.join(grub_update_cmd)}")
     log_info(f"配置文件路径: {config_path}")
     
+    # ===== 确保 grubenv 文件存在 =====
+    # CentOS/RHEL/Fedora 等系统需要 grubenv 文件，否则 grub2-mkconfig 会失败
+    grubenv_dir = os.path.dirname(config_path)  # /boot/grub2 或 /boot/grub
+    grubenv_path = os.path.join(mount_point, grubenv_dir.lstrip('/'), "grubenv")
+    
+    if not os.path.exists(grubenv_path):
+        log_info(f"grubenv 文件不存在，尝试创建...")
+        
+        # 方法1: 使用 grub2-editenv 创建
+        editenv_cmd = None
+        for cmd_name in ["grub2-editenv", "grub-editenv"]:
+            for cmd_dir in ["/usr/bin", "/bin", "/usr/sbin", "/sbin"]:
+                test_path = os.path.join(mount_point, cmd_dir.lstrip('/'), cmd_name)
+                if os.path.exists(test_path):
+                    editenv_cmd = os.path.join(cmd_dir, cmd_name)
+                    break
+            if editenv_cmd:
+                break
+        
+        if editenv_cmd:
+            success, _, stderr = run_command(
+                chroot_cmd_prefix + [editenv_cmd, "/boot/grub2/grubenv", "create"],
+                "创建 grubenv 文件",
+                timeout=10
+            )
+            if success or os.path.exists(grubenv_path):
+                log_success(f"✓ 成功创建 grubenv 文件")
+            else:
+                log_warning(f"grub2-editenv 创建失败: {stderr}")
+        
+        # 方法2: 直接创建空文件（如果方法1失败）
+        if not os.path.exists(grubenv_path):
+            try:
+                os.makedirs(os.path.dirname(grubenv_path), exist_ok=True)
+                # 创建一个空的 grubenv 文件（包含必要的头部）
+                with open(grubenv_path, 'w') as f:
+                    f.write("# GRUB Environment Block\n")
+                    f.write("saved_entry=\n")
+                    f.write("#" * 1024 + "\n")  # 填充到至少1KB
+                log_success(f"✓ 手动创建 grubenv 文件成功")
+            except Exception as e:
+                log_warning(f"手动创建 grubenv 文件失败: {e}")
+    
     # 执行配置更新
     success, stdout, stderr = run_command(
         chroot_cmd_prefix + grub_update_cmd,