2013-2014华南理工大学操作系统课程设计（完整源代码和详细文档）

Requirements 1． Simulate a Unix file system on your Windows Platform 2． Understand the file system on Unix system, and the usage of i-nodes 3． Implement the function of sub-directory 4． The task needs to be completed using C++ or C 5． Tasks/Functionalities The following functions are required in your file system: 1． Allocate 16MB space in memory as the storage for your file system. The space is divided as blocks with block size 1KB Assume block address length is 32-bit; Design the information contained in i-node The i-node should support up to 10 direct block addresses The i-node should support at least one indirect block address 2． The fist block is used for storing the i-node for the root directory(/). While your program is lunched, two directories (/dir1 and / dir1/dir2) should be created, and also two files need to be written as /dir1/file1 and /dir1/dir2/file2 (5 marks) 3． File 1 and 2 contain the message of “This is file 1.” and “This is file2”. 4． Following commands should be supported in your system： a) Create a file：createFile fileName fileSize (10 marks) i.e.：createFile /dir1/myFile 1024 (in bytes) if fileSiz > max file size, print out an error message. The file content is filled up with filename + repeated digits from 0 - 9 i.e.: “myFile012345678901234567890123….” b) Delete a file：deleteFile filename (10 marks) i.e.：deleteFile /dir1/myFile c) Create a directory：createDir (5 marks) i.e.：createDir /dir1/sub1 d) Delete a directory：deleteDir (5 marks) i.e.: deleteDir /dir1/sub1 （The current working directory is not allowed to be deleted） e) Change current working direcotry：changeDir (5 marks) i.e.: changeDir /dir2 f) List all the files and sub-directories under current working directory：dir (5 marks) You also need to list at least two file attributes. (i.e. file size, time created, etc.) g) Copy a file : cp (5 marks) i.e.: file1 file2 h) Display the usage of storage space：sum (10 marks) Display the usage of the 16MB