Project 0: Getting Started

The purpose of this project is to introduce you to working with the GeekOS source code and running

    GeekOS in the Bochs emulator.

项目0，准备开始

这个项目的目在于:向你介绍如何使用geekos源码工作，以及如何在Bochs模拟器下的运行geekos。

For Project 1 (“Project 1: Loading Executable Files”), you become familiar with the structure
of an executable file. You are provided with code for loading and running executable files, but you need to
first become familiar with the ELF file format, then write code to parse the provided file and pass it to theloader.

项目1，载入可执行文件

你有所了解的一个可执行文件的结构，由你来提供代码来运转文件，但是你需要先熟悉可执行连接格式（ELF，Executable and Linking Format），然后通过载入器描述准备好的文件。

In Project 2 (“Project 2: Adding Processes”), you will add support for user mode processes.Rather than using virtual memory to provide separate user address spaces, this project uses segmentation,
which issimpler to understand.

项目2，添加进程，你将添加对用户进程的支持，相对于使用虚拟内存来划分用户地址空间，这个项目将使用容易理解的分段方式。

Project 3 (“Project 3: Scheduling”) improves the GeekOS scheduler and adds support for
semaphores to coordinate multiple processes.

项目3，进程调度，改善Geekos的调度机制，添加用信号量来协调多进程。

Project4(Project4: VirtualMemory”)replaces the segmentation based user memory protection added in Project 1 with paged virtual memory. Pages of memory can be stored on disk in order to freeup RAM when the demand for memory exceeds the amountavailable.

项目4，虚拟内存，基于用户内存保护，在Project1中添加分页虚拟内存技术来代替信号量。分页内存能储存在磁盘上，用于当内存超出可使用量限制时释放出内存。

Project 5(“Project 5: A Filesystem”) adds a hierarchical read/writefile system to GeekOS.

项目5，文件系统，添加一个分级的文件读写系统

Project 6 ( “Project 6: ACLs and Inter-process Communication”)

adds access control lists(ACLs)to the file system,and adds interprocess communication using an onymoushalf-duplexpipes. Upon
the completion of this project, GeekOS will resemble a very simple version of Unix.

项目6，访问控制列表和进程间通讯。添加了访问控制列表（ACLs，access control lists）。添加了进程间通信，使用匿名半双管道通信。当完成了这些项目之后。Geekos就算得上是一个简单版本的UNIX了。