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    • 3. 发明授权
    • Copy file mechanism for transferring files between a host system and an
emulated file system
    • 复制文件机制,用于在主机系统和仿真文件系统之间传输文件
    • US5566326A
    • 1996-10-15
    • US311652
    • 1994-09-23
    • Thomas S. HirschRichard S. BianchiRon B. PerryKenneth J. Buck
    • Thomas S. HirschRichard S. BianchiRon B. PerryKenneth J. Buck
    • G06F1/00G06F9/455G06F9/46G06F13/10G06F21/00G06F12/14G06F15/16H04L9/00
    • G06F13/10G06F13/105G06F21/31G06F21/6281G06F9/45537G06F2221/2105
    • A host data processing system which includes a plurality of input/output devices operates under the control of an enhanced version of the UNIX operating system. The host system includes an emulator which runs as an application process for executing user emulated system (ES) application programs. The emulator includes a number of emulated system executive service components operating in shared memory and an interpreter, an emulator monitor call unit (EMCU) and a number of server facilities operating in the host memory. The ES executive service command handler and file management components are extended to accommodate dual decor copy command which invokes the file management component to copy files in either direction between the host system and emulated system. The server facilities include mechanisms for performing a trusted user level validation when the dual decor copy command is invoked and access control checking at file access which ensures security relative to preventing both unauthorized user access and compromises in user data through improper use of the copy command.
    • 包括多个输入/输出设备的主机数据处理系统在UNIX操作系统的增强版本的控制下操作。 主机系统包括作为执行用户仿真系统(ES)应用程序的应用程序运行的仿真器。 仿真器包括在共享存储器中操作的多个模拟系统执行服务组件和解释器,仿真器监视器呼叫单元(EMCU)以及在主机存储器中操作的多个服务器设备。 ES执行服务命令处理程序和文件管理组件被扩展以适应双装载复制命令,该命令调用文件管理组件以在主机系统和仿真系统之间的任一方向上复制文件。 服务器设备包括用于在双重装饰复制命令被调用时执行可信用户级别验证的机制,以及在文件访问时的访问控制检查,其确保相对于通过不正当地使用复制命令来防止未经授权的用户访问和损害用户数据的安全性。