修改grub参数为rw后，usr目录变成只读问题修改

debian/changelog

@@ -1,3 +1,9 @@
+initramfs-tools (0.142kylin13.1.9test3) nile; urgency=medium
+
+  * 修改grub参数为rw后，usr目录变成可读写了
+
+ -- liushanwen <liushanwen@kylinos.cn>  Fri, 13 Sep 2024 16:04:13 +0800
+
 initramfs-tools (0.142kylin13.1.9test1) nile; urgency=medium
 
   * 添加overlayfs文件系统驱动

scripts/local

@@ -222,8 +222,13 @@ local_mount_root()
         mount ${roflag} ${FSTYPE:+-t "${FSTYPE}"} ${ROOTFLAGS} "${ROOT}" "/tmproot"
         root_real_path=$(readlink -f "/tmproot${OSTREEROOT}")
         mount -o bind "${root_real_path}" "${rootmnt?}"
+
+		mount -o ro,bind "${rootmnt?}/usr" "${rootmnt?}/usr"
 		mount -o ro,bind,remount "${rootmnt?}/usr" "${rootmnt?}/usr"
+
 		mount -o ro,bind "/tmproot" "${rootmnt?}/sysroot"
+		mount -o ro,bind,remount "/tmproot" "${rootmnt?}/sysroot"
+
 		mount -o rw,bind "/tmproot/var" "${rootmnt?}/var"
         mount -o rw,bind "/tmproot/var" "${rootmnt?}/sysroot/ostree/deploy/openkylin/var"
     fi