本設(shè)計(jì)的目的是通過(guò)設(shè)計(jì)和調(diào)試一個(gè)簡(jiǎn)單的文件系統(tǒng),主要是模擬文件操作命令的執(zhí)行,來(lái)模擬文件管理,使學(xué)生對(duì)主要文件操作命令的實(shí)質(zhì)和執(zhí)行過(guò)程有比較深入的了解,掌握它們的基本實(shí)施方法。具體要求如下: (1) 設(shè)計(jì)一個(gè)支持n個(gè)用戶(hù)的文件系統(tǒng),每個(gè)用戶(hù)可擁有多個(gè)文件: (2) 采用二級(jí)或二級(jí)以上的多級(jí)文件目錄管理; (3) 對(duì)文件應(yīng)設(shè)置存去控制保護(hù)方式,如“只能執(zhí)行”、“允許讀”、“允許寫(xiě)等”; (4) 系統(tǒng)的外部特征應(yīng)接近于真實(shí)系統(tǒng),可設(shè)置下述文件操作命令: 命 令 功 能 命 令 功 能 Create 建立文件 Read 讀文件 Open 打開(kāi)文件 Write 寫(xiě)文件 Close 關(guān)閉文件 Copy 復(fù)制文件 Delete 撤消文件 Directory 查詢(xún)目錄 (5) 通過(guò)鍵盤(pán)使用該文件系統(tǒng),系統(tǒng)應(yīng)顯示操作命令的執(zhí)行結(jié)果。
標(biāo)簽: 調(diào)試 文件系統(tǒng)
上傳時(shí)間: 2014-01-11
上傳用戶(hù):zhanditian
(1) 給定一段符合Pascal子集語(yǔ)法的語(yǔ)言,能成功轉(zhuǎn)換成C語(yǔ)言; (2) 一個(gè)簡(jiǎn)單的說(shuō)明文檔; (3) 2007.7.14之前上傳到ftp:// C07:C07@10.11.3.71/upload,用學(xué)號(hào)建立自己的目錄; (4) (可額外加分5分)若有出錯(cuò)處理功能,請(qǐng)?jiān)谡f(shuō)明文檔中寫(xiě)明可以處理哪幾項(xiàng)錯(cuò)誤。 注意事項(xiàng): (1) 兩人一組 (2) 可以使用詞法、語(yǔ)法自動(dòng)生成工具,windows下有Flex,Bison,Linux下有Lex,Yacc,Java的有Jlex,JavaCC,ANTLR等 (3) 不用考慮Pascal和C的關(guān)鍵詞不同問(wèn)題,即Pascal子集語(yǔ)言中假設(shè)不出現(xiàn)int,for等作為變量標(biāo)志符 (4) read()和write()可用由scanf(),printf()等組成的語(yǔ)句轉(zhuǎn)換。 (5) 如果有疑問(wèn)可以發(fā)信給我 xpqiu@fudan.edu.cn.
上傳時(shí)間: 2015-11-20
上傳用戶(hù):talenthn
Software Testing, Second Edition provides practical insight into the world of software testing and quality assurance. Learn how to find problems in any computer program, how to plan an effective test approach and how to tell when software is ready for release. Updated from the previous edition in 2000 to include a chapter that specifically deals with testing software for security bugs, the processes and techniques used throughout the book are timeless. This book is an excellent investment if you want to better understand what your Software Test team does or you want to write better software.
標(biāo)簽: practical Software provides software
上傳時(shí)間: 2014-08-01
上傳用戶(hù):zhaiyanzhong
STK500_2下載器 M8 支持bootloader(帶bootloader源碼) 使用STK500_2 協(xié)議的ISP下載器,監(jiān)控芯片 M8,數(shù)據(jù)通訊RS232.使用 ATMEL AVRStudio 4.xx STK500工具的進(jìn)行軟件升級(jí)。可通過(guò)ATMEL AVRStudio 4.xx STK500工具升級(jí)固件程序。升級(jí)方法:通過(guò)設(shè)定電壓 即按“write voltage”按鈕進(jìn)入bootloader程序。
標(biāo)簽: bootloader STK 500 ISP
上傳時(shí)間: 2014-08-27
上傳用戶(hù):haoxiyizhong
FLASH文件系統(tǒng)的源碼,F(xiàn)lash memory is a nonvolatile memory, which allows the user to electrically program (write) and erase information. The exponential growth of flash memory has made this technology an indispensable part of hundreds of millions of electronic devices. Flash memory has several significant differences with volatile (RAM) memory and hard drive technologies which requires unique software drivers and file systems. This paper provides an overview of file systems for flash memory and focuses on the unique software requirements of flash memory devices.
標(biāo)簽: FLASH 文件系統(tǒng) 源碼
上傳時(shí)間: 2015-11-29
上傳用戶(hù):問(wèn)題問(wèn)題
Avalon Interface Specification,The Avalon interface specification is designed to accommodate peripheral development for the system-on-a-programmable-chip (SOPC) environment. The specification provides peripheral designers with a basis for describing the address-based read/write interface found on master and slave peripherals, such as microprocessors, memory, UART, timer, etc.
標(biāo)簽: Avalon Specification specification accommodate
上傳時(shí)間: 2014-03-06
上傳用戶(hù):pompey
圖像處理的關(guān)于Snakes : Active Contour Models算法和水平集以及GVF的幾篇文章,文章列表為: [1]Snakes Active Contour Models.pdf [2]Multiscale Active Contours.pdf [3]Snakes, shapes, and gradient vector flow.pdf [4]Motion of level sets by mean curvature I.pdf [5]Spectral Stability of Local Deformations Spectral Stability of Local Deformations.pdf [6]An active contour model for object tracking using the previous contour.pdf [7]Volumetric Segmentation of Brain Images Using Parallel Genetic AlgorithmsI.pdf [8]Segmentation in echocardiographic sequences using shape-based snake model.pdf [9]Active Contours Without Edges.pdf 學(xué)習(xí)圖像處理的人必看的幾篇文章
標(biāo)簽: Contour Snakes Active Models
上傳時(shí)間: 2014-01-15
上傳用戶(hù):wqxstar
ADV7181B視頻解碼設(shè)置和控制實(shí)驗(yàn) FreeDev Digital Application Board采用了ADI公司的 ADV7181B視頻解碼芯片。控制接口使用I2C,40H--write,41H---read。
標(biāo)簽: 7181B 7181 Application ADV
上傳時(shí)間: 2015-12-14
上傳用戶(hù):風(fēng)之驕子
最大流,The programs are designed to run under BSD UNIX. All programs read from the standard input and write to the standard output. Run "make" to compile the programs and generators. File "list" lists the programs produced my "make". Input files are in DIMACS format. See sample.input.
標(biāo)簽:
上傳時(shí)間: 2015-12-30
上傳用戶(hù):zhenyushaw
detailed description of network driver design for uclinux. It s quite good for the understanding the work flow of ethernet driver in uclinux
標(biāo)簽: understanding description for the
上傳時(shí)間: 2014-06-17
上傳用戶(hù):rocketrevenge
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