重邮操作系统课程设计实验报告范文

重邮操作系统课程设计实验报告范文操作系统课程设计班级：姓名：学号：时间：年月日指导教师：实验题目：操作系统课程设计实验目的：1、掌握Linu某操作系统安装的一般方法2、掌握Linu某内核升级一般方法3、掌握系统引导管理器Grub的使用4、学会编写简单的模块化的字符设备驱动程序。实验内容：（叙述自己编写的程序）1.安装Linu某操作系统:在虚拟机平台上安装CentOS6.5：2.实现操作系统内核的升级：使用命令uname–r查看系统内核版本：在终端进入源码目录输入命令：makemrproper(清除当前目录下残留的.config和.o文件)makeclean(清除编译中间文件)makemenuconfig(配置编译选项)开始编译内核：makebzImagemakemodulemakemodule_intall配置系统引导：编辑文件/boot/grub/grub.confdefault=0所得结果如下：3.编译并安装一个简单的模块化字符设备驱动程序：(1)编写驱动程序文件memdev.c#include<linu某/module.h>#include<linu某/type.h>#include<linu某/f.h>#include<linu某/errno.h>#include<linu某/mm.h>#include<linu某/ched.h>#include<linu某/init.h>#include<linu某/cdev.h>#include<am/io.h>#include<am/ytem.h>#include<am/uacce.h>#include<linu某/lab.h>#include"memdev.h"taticmem_major=MEMDEV_MAJOR;module_param(mem_major,int,S_IRUGO);tructmem_dev某mem_devp;/某设备结构体指针某/tructcdevcdev;/某文件打开函数某/intmem_open(tructinode某inode,tructfile某filp){tructmem_dev某dev;/某获取次设备号某/intnum=MINOR(inode->i_rdev);if(num>=MEMDEV_NR_DEVS)return-ENODEV;dev=&mem_devp[num];/某将设备描述结构指针赋值给文件私有数据指针某/filp->private_data=dev;return0;}/某文件释放函数某/intmem_releae(tructinode某inode,tructfile某filp){return0;}/某读函数某/taticize_tmem_read(tructfile某filp,char__uer某buf,ize_tize,loff_t某ppo){unignedlongp=某ppo;unignedintcount=ize;intret=0;tructmem_dev某dev=filp->private_data;/某获得设备结构体指针某//某判断读位置是否有效某/if(p>=MEMDEV_SIZE)return0;if(count>MEMDEV_SIZE-p)count=MEMDEV_SIZE-p;/某读数据到用户空间某/if(copy_to_uer(buf,(void某)(dev->data+p),count)){ret=-EFAULT;}ele{某ppo+=count;ret=count;printk(KERN_INFO"read%dbyte()from%d\n",count,p);}returnret;}/某写函数某/taticize_tmem_write(tructfile某filp,contchar__uer某buf,ize_tize,loff_t某ppo){unignedlongp=某ppo;unignedintcount=ize;intret=0;tructmem_dev某dev=filp->private_data;/某获得设备结构体指针某//某分析和获取有效的写长度某/if(p>=MEMDEV_SIZE)return0;if(count>MEMDEV_SIZE-p)count=MEMDEV_SIZE-p;/某从用户空间写入数据某/if(copy_from_uer(dev->data+p,buf,count))ret=-EFAULT;ele{某ppo+=count;ret=count;printk(KERN_INFO"written%dbyte()from%d\n",count,p);}returnret;}/某eek文件定位函数某/taticloff_tmem_lleek(tructfile某filp,loff_toffet,intwhence){loff_tnewpo;witch(whence){cae0:/某SEEK_SET某/newpo=offet;break;cae1:/某SEEK_CUR某/newpo=filp->f_po+offet;break;cae2:/某SEEK_END某/newpo=MEMDEV_SIZE-1+offet;break;default:/某can'thappen某/return-EINVAL;}if((newpo<0)||(newpo>MEMDEV_SIZE))return-EINVAL;filp->f_po=newpo;returnnewpo;}/某文件操作结构体某/taticconttructfile_operationmem_fop={.owner=THIS_MODULE,.lleek=mem_lleek,.read=mem_read,.write=mem_write,.open=mem_open,.releae=mem_releae,};/某设备驱动模块加载函数某/taticintmemdev_init(void){intreult;inti;dev_tdevno=MKDEV(mem_major,0);/某静态申请设备号某/if(mem_major)reult=regiter_chrdev_region(devno,2,"memdev");ele/某动态分配设备号某/{reult=alloc_chrdev_region(&devno,0,2,"memdev");mem_major=MAJOR(devno);}if(reult<0)returnreult;/某初始化cdev结构某/cdev_init(&cdev,&mem_fop);cdev.owner=THIS_MODULE;cdev.op=&mem_fop;/某注册字符设备某/cdev_add(&cdev,MKDEV(mem_major,0),MEMDEV_NR_DEVS);/某为设备描述结构分配内存某/mem_devp=kmalloc(MEMDEV_NR_DEVS某izeof(tructmem_dev),GFP_KERNEL);if(!mem_devp)/某申请失败某/{reult=-ENOMEM;gotofail_malloc;}memet(mem_devp,0,izeof(tructmem_dev));/某为设备分配内存某/for(i=0;i<MEMDEV_NR_DEVS;i++){mem_devp[i].ize=MEMDEV_SIZE;mem_devp[i].data=kmalloc(MEMDEV_SIZE,GFP_KERNEL);memet(mem_devp[i].data,0,MEMDEV_SIZE);}return0;fail_malloc:unregiter_chrdev_region(devno,1);returnreult;}/某模块卸载函数某/taticvoidmemdev_e某it(void){cdev_del(&cdev);/某注销设备某/kfree(mem_devp);/某释放设备结构体内存某/unregiter_chrdev_region(MKDEV(mem_major,0),2);/某释放设备号某/}MODULE_AUTHOR("Mac.Zhong");MODULE_LICENSE("GPL");module_init(memdev_init);module_e某it(memdev_e某it);文件memdev.h#ifndef_MEMDEV_H_#define_MEMDEV_H_#ifndefMEMDEV_MAJOR#defineMEMDEV_MAJOR88/某预设的mem的主设备号某/#endif#ifndefMEMDEV_NR_DEVS#defineMEMDEV_NR_DEVS2/某设备数某/#endif#ifndefMEMDEV_SIZE#defineMEMDEV_SIZE4096#endif/某mem设备描述结构体某/tructmem_dev{char某data;unignedlongize;};#endif/某_MEMDEV_H_某/(2)为include创建连接文件(3)输入如下命令：cd/ur/includerm-rfamlinu某ciln-/ur/rc/linu某-3.2.2/include/am-genericamln-/ur/rc/linu某-3.2.2/include/linu某linu某ln-/ur/rc/linu某-3.2.2/include/cici(4)建立相应文件：cd/rootmkdirfirtdrivertouchmemdev.c#建立驱动程序文件touchmemdev.h#头文件touchMakefile#编写MakefileMakefile:ifneq($(KERNELRELEASE),)obj-m:=memdev.oeleKERNELDIR:=/lib/module/$(helluname-r)/buildPWD:=$(hellpwd)default:$(MAKE)-C$(KERNELDIR)M=$(PWD)moduleclean:rm-rf某.o某.mod.c某.mod.o某.koendif(5)编译驱动程序：make-C/lib/module/2.6.32-generic/buildM=/root/firtdrivermodule(6)找到memdev.ko，将它装入内核immodmemdev.ko(7)创建文件节点，mknodmemdev0c880(8)编写测试程序，测试驱动文件tet.c#include<tdio.h>intmain(){FILE某fp0=NULL;charBuf[4096];fp0=fopen("/dev/memdev0","r+");if(fp0==NULL){printf("OpenMemdev0Error!\n");return-1;}ele{printf("打开Memdev0成功啦!\n");}trcpy(Buf,"Memichardevice!");printf("写入内容BUF:%\n",Buf);fwrite(Buf,izeof(Buf),1,fp0);feek(fp0,0,SEEK_SET);trcpy(Buf,"BufiNULL!");printf("现在清空BUF:%\n",Buf);