操作系统课程设计汇本二级文件系统

...wd......wd......wd...操作系统课程设计报告操作系统课程设计报告专业：计算机信息处理学号：姓名：提交日期：【设计目的】1.课程设计目的是通过一个简单多用户文件系统的设计，加深理解文件系统的内部功能和内部实现。2.结合数据构造、程序设计、计算机原理等课程的知识，设计一个二级文件系统，进一步理解操作系统。3.通过对实际问题的分析、设计、编程实现，提高学生实际应用、编程的能力【设计内容】1、delete删除文件2、open翻开文件3、close关闭文件4、write写文件【实验环境】Windows7系统Visualstudio2010【相关知识综述】本文件系统采用两级目录，其中第一级对应于用户账号，第二级对应于用户帐号下的文件。另外，为了简便文件系统未考虑文件共享，文件系统安全以及管道文件与设备文件等特殊内容。首先应确定文件系统的数据构造：主目录、子目录及活动文件等。主目录和子目录都以文件的形式存放于磁盘，这样便于查找和修改。用户创立的文件，可以编号存储于磁盘上。如：file0,file1,file2…并以编号作为物理地址，在目录中进展登记。【设计思路】1主要数据构造#defineMAXNAME25/*thelargestlengthofmfdname,ufdname,filename*/#defineMAXCHILD50/*thelargestchild每个用户名下最多有50个文件*/#defineMAX(MAXCHILD*MAXCHILD)/*thesizeoffpaddrno*/typedefstruct/*thestructureofOSFILE定义主文件*/{intfpaddr;/*filephysicaladdress*/intflength;/*filelength*/intfmode;/*filemode:0-ReadOnly;1-WriteOnly;2-ReadandWrite;3-Protect;*/charfname[MAXNAME];/*filename*/}OSFILE;typedefstruct/*thestructureofOSUFD定义用户文件目录*/{charufdname[MAXNAME];/*ufdname*/ OSFILEufdfile[MAXCHILD];/*ufdownfile*/}OSUFD;typedefstruct/*thestructureofOSUFD'LOGIN定义登陆*/{charufdname[MAXNAME];/*ufdname*/charufdpword[8];/*ufdpassword*/}OSUFD_LOGIN;typedefstruct/*fileopenmode定义操作方式*/{intifopen;/*ifopen:0-close,1-open*/intopenmode;/*0-readonly,1-writeonly,2-readandwrite,3-initial*/}OSUFD_OPENMODE;2主要函数voidLoginF();/*LOGINFileSystem*/voidDirF();/*DirFileSystem*/voidCreateF();/*CreateFile*/voidDeleteF();/*DeleteFile*/voidModifyFM();/*ModifyFileMode*/voidOpenF();/*OpenFile*/voidCloseF();/*CloseFile*/voidReadF();/*ReadFile*/voidWriteF();/*WriteFile*/voidQuitF();/*QuitFileSystem*/voidCdF();/*ChangeDir*/voidhelp();【主要程序段】1Delete函数voidDeleteF()/*DeleteFile*/{charfname[MAXNAME],str[50],str1[50]; inti,k,j; intfpaddrno1; if(strcmp(strupr(ltrim(rtrim(dirname))),"")==0)/*无法删除主目录的文件*/ { printf("\nError.Pleaseconverttoufddirbeforedelete.\n"); wgetchar=1; } if(strcmp(strupr(dirname),strupr(username))!=0)/*无法删除非自己目录的文件*/ { printf("\nError.Youcanonlymodifyfilemodeinyourselfdir.\n"); wgetchar=1; } else { printf("\nPleaseinputFileName:"); gets(fname);//从键盘获取所要删除的文件名 ltrim(rtrim(fname)); i=ExistF(fname);//获取文件编号 if(i>=0) { k=ExistD(username); if(ifopen[k][i].ifopen==1)/*文件翻开时无法删除*/ { printf("\nError.\'%s\'isinopenstatus.Closeitbeforedelete.\n",fname); wgetchar=1; } else { if(ufd[k]->ufdfile[i].fmode==3)/*被保护的文件无法删除*/ { printf("\nError.\'%s\'isinprotectstatus.Closeitbeforedelete.\n",fname); wgetchar=1; } else { fpaddrno1=ufd[k]->ufdfile[i].fpaddr;//获取文件对应的物理文件名 fpaddrno[fpaddrno1]=0;//回收盘块 for(j=i;j<fcount[k];j++) { ufd[k]->ufdfile[j]=ufd[k]->ufdfile[j+1];//从被删除的文件号开场，数组值全部前移一个 } strcpy(str,"d:\\osfile\\file\\file"); itoa(fpaddrno1,str1,10);//整数转化成字符串 strcat(str,str1); strcat(str,".txt"); remove(str);//删除物理文件 fcount[k]--;//k用户文件数量少1 printf("\n\'%s\'isdeletedsuccessfully.\n",fname); wgetchar=1; } } } else//所要删除的文件不存在 { printf("\nError.\'%s\'dosenotexist.\n",fname); wgetchar=1; } }}2Open函数voidOpenF()/*OpenFile*/{ charfname[MAXNAME]; inti,k,j; if(strcmp(strupr(dirname),strupr(username))!=0)/*在自己的目录里才能翻开*/ { printf("\nError.Youcanonlyopeninyourselfdir.\n"); wgetchar=1; } else { k=ExistD(username); for(j=0;j<fcount[k];j++) { printf("%15s",ufd[k]->ufdfile[j].fname); }printf("\nPleaseinputFileName:"); gets(fname);//获取所要翻开的文件名 ltrim(rtrim(fname)); i=ExistF(fname);//获取目录编号 if(i>=0) { if(ifopen[k][i].ifopen==1)//输入的文件是翻开的 { printf("\nError.\'%s\'isinopenstatus.\n",fname); wgetchar=1; } else { ifopen[k][i].ifopen=1;//修改为翻开的 if(ufd[k]->ufdfile[i].fmode==0)/*根据文件的模式设置翻开模式*/ {ifopen[k][i].openmode=0;} elseif(ufd[k]->ufdfile[i].fmode==1) {ifopen[k][i].openmode=1;} elseif(ufd[k]->ufdfile[i].fmode==2) {ifopen[k][i].openmode=2;} elseifopen[k][i].openmode=3;printf("\n\'%s\'isopenedsuccessfully\n",fname); wgetchar=1; } } else//文件不存在 { printf("\nError.\'%s\'dosenotexist.\n",fname); wgetchar=1; } }}3Close函数voidCloseF()/*CloseFile*/{ charfname[MAXNAME]; inti,k,j; if(strcmp(strupr(dirname),strupr(username))!=0)/*不在自己的目录里没法进展*/ { printf("\nError.Youcanonlyclosefileinyourselfdir.\n"); wgetchar=1; } else { k=ExistD(username); for(j=0;j<fcount[k];j++)/*列出已经翻开的文件*/ { if(ifopen[k][j].ifopen==1)//如果文件是翻开的 printf("%15s",ufd[k]->ufdfile[j].fname); }printf("\nPleaseinputFileName:"); gets(fname);//从键盘上读入所要关闭的文件 ltrim(rtrim(fname)); i=ExistF(fname);//获取文件编号 if(i>=0) { ifopen[k][i].ifopen=0;/*关闭文件*/ printf("\n\'%s\'closedsuccessfully\n",fname); wgetchar=1; } else//所要关闭的文件不存在 { printf("\nError.\'%s\'dosenotexist.\n",fname); wgetchar=1; } }}4Write函数voidWriteF()/*WriteFile*/{ inti,k,n=0; intlength; charfname[MAXNAME],values[1000]; charstr[255],str1[255],c; if(strcmp(strupr(ltrim(rtrim(dirname))),"")==0)//只能写自己目录下的文件 { printf("\nError.Pleaseconverttoufddirbeforewrite.\n"); wgetchar=1; return; } printf("\nCaution:Openfilefirst\n"); printf("OpenedFile(s)List:\n"); k=ExistD(dirname);//获取目录编号 for(i=0;i<fcount[k];i++)/*列出可以写的文件*/ { if(ifopen[k][i].ifopen==1)//如果文件是翻开的 { printf("%15s",ufd[k]->ufdfile[i].fname); n++; } if((n%4==0)&&(n!=0))printf("\n"); } printf("\n%dfilesopenned.\n",n); if(n==0)wgetchar=1;//没有翻开的文件 if(n!=0) { printf("\nPleaseinputFileName:"); gets(fname);//从键盘获取所要写的文件 ltrim(rtrim(fname)); i=ExistF(fname);//获取文件编号 if(i>=0) { if(ifopen[k][i].ifopen==1)//如果文件是翻开的 { if((ifopen[k][i].openmode==1)||(ifopen[k][i].openmode==2))//文件是只写，或者是可读可写的 { itoa(ufd[k]->ufdfile[i].fpaddr,str,10);//获取文件对应的物理地址 strcpy(str1,"file"); strcat(str1,str); strcpy(str,"d:\\osfile\\file\\"); strcat(str,str1); strcat(str,".txt"); fp_file=fopen(str,"ab");//以二进制只写的形式翻开，每次将内容添加到文件末尾接着上一次内容 length=WriteF1(); ufd[k]->ufdfile[i].flength=ufd[k]->ufdfile[i].flength+length;//计算总长度 printf("\n\n%dLength.\n",ufd[k]->ufdfile[i].flength); printf("\n\nYouhavewritefilesuccessfully!!"); fclose(fp_file); wgetchar=0; } elseif(ifopen[k][i].openmode==0)//文件是只读的 { printf("\nError.\'%s\'hasbeenopenedwithREADONLYmode.Itisn\'twrite.\n",fname); wgetchar=1; } else//文件是保护的 { printf("\nError.\'%s\'hasbeenopenedwithPROTECTmode.Itisn\'twrite.\n",fname); wgetchar=1; } } else//文件是关闭的 { printf("\nError.\'%s\'isinclosingstatus.Pleaseopenitbeforewrite\n",fname); wgetchar=1; } } else//所指定的文件不存在 { printf("\nError.\'%s\'doesnotexist.\n",fname); wgetchar=1; } }}【程序流程设计】总的功能构造图：局部子模块程序流程图〔1〕翻开命令的程序流程图：〔2〕关闭命令的程序流程图：〔3〕写命令的程序流程图：〔4〕删除命令的程序流程图：【测试结果】1删除文件2翻开的文件不能删除3翻开文件，其中已经翻开的文件不能再次翻开3关闭文件4写文件，其中只有翻开了文件才能写入5写文件6只读文件和保护文件不能写入7其他函数【参考文献】计算机操作系统,西安电子科技大学出版社，方敏主编,2004.8局部函数含义引用于msdn.microsoft【源程序清单】#include"stdio.h"#include"string.h"#include"conio.h"#include"stdlib.h"#defineMAXNAME25/*thelargestlengthofmfdname,ufdname,filename*/#defineMAXCHILD50/*thelargestchild每个用户名下最多有50个文件*/#defineMAX(MAXCHILD*MAXCHILD)/*thesizeoffpaddrno*/typedefstruct/*thestructureofOSFILE定义主文件*/{intfpaddr;/*filephysicaladdress*/intflength;/*filelength*/intfmode;/*filemode:0-ReadOnly;1-WriteOnly;2-ReadandWrite;3-Protect;*/charfname[MAXNAME];/*filename*/}OSFILE;typedefstruct/*thestructureofOSUFD定义用户文件目录*/{charufdname[MAXNAME];/*ufdname*/ OSFILEufdfile[MAXCHILD];/*ufdownfile*/}OSUFD;typedefstruct/*thestructureofOSUFD'LOGIN定义登陆*/{charufdname[MAXNAME];/*ufdname*/charufdpword[8];/*ufdpassword*/}OSUFD_LOGIN;typedefstruct/*fileopenmode定义操作方式*/{intifopen;/*ifopen:0-close,1-open*/intopenmode;/*0-readonly,1-writeonly,2-readandwrite,3-protect*/}OSUFD_OPENMODE;voidLoginF();/*LOGINFileSystem*/voidDirF();/*DirFileSystem*/voidCreateF();/*CreateFile*/voidDeleteF();/*DeleteFile*/voidModifyFM();/*ModifyFileMode*/voidOpenF();/*OpenFile*/voidCloseF();/*CloseFile*/voidReadF();/*ReadFile*/voidWriteF();/*WriteFile*/voidQuitF();/*QuitFileSystem*/voidCdF();/*ChangeDir*/voidhelp();char*rtrim(char*str);/*removethetrailingblanks.*/char*ltrim(char*str);/*removetheheadingblanks.*/voidInputPW(char*password);/*inputpassword,use'*'replace*/intExistD(char*dirname);/*WhetherDirNameExist,Exist-i,NotExist-0*/intWriteF1();/*writefile*/intExistF(char*filename);/*WhetherFileNameExist,Exist-i,NotExist-0*/voidSetPANo(intRorW);/*Setphysicaladdressnum*/intFindPANo();/*findoutphysicaladdressnum*/intucount=0;/*thecountofmfd'sufds用户数*/intfcount[MAXCHILD];/*thecountofufd'sfiles子文件数*/intloginsuc=0;/*whetherloginsuccessfully登陆成功*/charusername[MAXNAME];/*recordloginuser'sname22用户名*/chardirname[MAXNAME];/*recordcurrentdirectory使用的用户目录*/intfpaddrno[MAX];/*recordfilephysicaladdressnum物?理地址号，存放自己所创立的所有文件的地址*/intwgetchar;/*whethergetchar()*/OSUFD*ufd[MAXCHILD];/*ufdandufdownfiles*/OSUFD_LOGINufd_lp;//用户登录构造体类型的变量OSUFD_OPENMODEifopen[MAXCHILD][MAXCHILD];/*recordfileopen/close*/FILE*fp_mfd,*fp_ufd,*fp_file_p,*fp_file;//FILE是变量类型，实际上是语言定义的标准数据构造，用于文件voidclrscr()/*清屏*/{ system("cls");}voidmain(){inti,choice1;charchoice[50];/*choiceoperation:dir,create,delete,open,delete,modify,read,write*/intchoiceend=1;/*whetherchoiceend*///fopen标准函数，翻开文件msd.txt，翻开一个二进制文件，只允许读数据，送返指针，指向FILE类型对象。if((fp_mfd=fopen("d:\\osfile\\mfd.txt","rb"))==NULL) { fp_mfd=fopen("d:\\osfile\\mfd.txt","wb");//翻开一个二进制文件，只允许写数据 fclose(fp_mfd);//关闭一个流 }for(i=0;i<MAX;i++)fpaddrno[i]=0;clrscr();/*clearscreen*/ LoginF();/*userlogin*/if(loginsuc==1)/*LoginSuccessfully*/ {while(1) { wgetchar=0;if(choiceend==1) printf("\n\nd:\\%s>",strupr(dirname));//表示以字符串型输出else printf("Badcommandorfilename.Choosehelp\nd:\\%s>",strupr(dirname));//strupr-变为大写字母 gets(choice); strcpy(choice,ltrim(rtrim(strlwr(choice))));//strlwr将字符串转换为小写形式,strcpy(dest,char)复制//ltrim(rtrim())去掉输入用户名的头部和尾部空格if(strcmp(choice,"dir")==0)choice1=1;//strcmp一样为0elseif(strcmp(choice,"create")==0)choice1=2;elseif(strcmp(choice,"delete")==0)choice1=3;elseif(strcmp(choice,"attrib")==0)choice1=4;elseif(strcmp(choice,"open")==0)choice1=5;elseif(strcmp(choice,"close")==0)choice1=6;elseif(strcmp(choice,"read")==0)choice1=7;elseif(strcmp(choice,"write")==0)choice1=8;elseif(strcmp(choice,"exit")==0)choice1=9;elseif(strcmp(choice,"cls")==0)choice1=10;elseif(strcmp(choice,"cd")==0)choice1=11;elseif(strcmp(choice,"help")==0)choice1=20;elsechoice1=12;switch(choice1) {case1:DirF();choiceend=1;break;case2:CreateF();choiceend=1;if(!wgetchar)getchar();break;case3:DeleteF();choiceend=1;if(!wgetchar)getchar();break;case4:ModifyFM();choiceend=1;if(!wgetchar)getchar();break;case5:OpenF();choiceend=1;if(!wgetchar)getchar();break;case6:CloseF();choiceend=1;if(!wgetchar)getchar();break;case7:ReadF();choiceend=1;if(!wgetchar)getchar();break;case8:WriteF();choiceend=1;if(!wgetchar)getchar();break;case9:printf("\nYouhaveexitedthissystem."); QuitF();exit(0);break;case10:clrscr();choiceend=1;break;case11:CdF();choiceend=1;break;//更改目录名称case20:help();choiceend=1;break;default:choiceend=0; } } }else printf("\nAccessdenied.");}char*rtrim(char*str)/*removethetrailingblanks.去掉登陆用户名的尾空格*/{intn=strlen(str)-1;while(n>=0) {if(*(str+n)!='') { *(str+n+1)='\0';break; }elsen--; }if(n<0)str[0]='\0';returnstr;}char*ltrim(char*str)/*removetheheadingblanks.去掉登陆用户名的头空格*/{ strrev(str);//字符的顺序颠倒 rtrim(str); strrev(str);returnstr;}voidSetPANo(intRorW)/*Setphysicaladdressnum,0-read,1-write物理地址*/{inti,j;if(RorW==0) {if((fp_file_p=fopen("d:\\osfile\\file\\file_p.txt","rb"))==NULL)//只读 { fp_file_p=fopen("d:\\osfile\\file\\file_p.txt","wb");//只写 fclose(fp_file_p); } fp_file_p=fopen("d:\\osfile\\file\\file_p.txt","rb");//只读//fread读数据(输入地址，大小，个数，提供数据的文件),sizeof是内存空间的大小不是长度for(i=0;fread(&j,sizeof(int),1,fp_file_p)!=0;i++) fpaddrno[j]=1; }else { fp_file_p=fopen("d:\\osfile\\file\\file_p.txt","wb");//只写for(i=0;i<MAX;i++)if(fpaddrno[i]==1) fwrite(&i,sizeof(int),1,fp_file_p);//fwrite写数据输出地址，字节数，个数，目标文件) } fclose(fp_file_p);}voidInputPW(char*password)/*inputpassword,use'*'replace*/{intj;for(j=0;j<=7;j++) { password[j]=getch();//gerch()返回从键盘上读取到的字符if((int)(password[j])!=13) {if((int)(password[j])!=8) putchar('*');//输出一个字符else {if(j>0) { j--; putchar('\b');putchar('');putchar('\b'); }elsej--; } }else { password[j]='\0';break; } } password[j]='\0';}intExistD(char*dirname)/*WhetherDirNameExist,Exist-i,NotExist-(-1)*/{inti;intexist=0;for(i=0;i<ucount;i++)if(strcmp(strupr(ufd[i]->ufdname),strupr(dirname))==0) { exist=1;break; }if(exist)return(i);elsereturn(-1);}intExistF(char*filename)/*WhetherFileNameExist,Exist-i,NotExist-(-1)*/{inti,j;intexist=0; j=ExistD(dirname);for(i=0;i<fcount[j];i++)if(strcmp(strupr(ufd[j]->ufdfile[i].fname),strupr(filename))==0) { exist=1;break; }if(exist)return(i);elsereturn(-1);}intFindPANo()/*findoutphysicaladdressnum*/{inti;for(i=0;i<MAX;i++)if(fpaddrno[i]==0) { fpaddrno[i]=1;break; }if(i<MAX)return(i);elsereturn(-1);}intWriteF1()/*writefile*/{intlength=0;charc; printf("Pleaseinputtext(\'#\'standsforend):\n");while((c=getchar())!='#') { fprintf(fp_file,"%c",c);if(c!='\n')length++; } fprintf(fp_file,"\n"); fclose(fp_file);return(length);}voidLoginF()/*LOGINFileSystem登陆函数*/{charloginame[MAXNAME],loginpw[9],logincpw[9],str[50];//loginpw-输入密码，logincpw-确认输入密码,str[50]存放地址inti,j,flag=1;chara[25];intfindout;/*loginusernotexist*/while(1) { findout=0; printf("\n\nLoginName:"); gets(loginame);//把用户名写入系统 ltrim(rtrim(loginame)); fp_mfd=fopen("d:\\osfile\\mfd.txt","rb");//翻开文件mfdfor(i=0;fread(&ufd_lp,sizeof(OSUFD_LOGIN),1,fp_mfd)!=0;i++)if(strcmp(strupr(ufd_lp.ufdname),strupr(loginame))==0)//两者相等 { findout=1; strcpy(logincpw,ufd_lp.ufdpword); } fclose(fp_mfd);//关闭mfd文件if(findout==1)/*userexist*///该用户存在 { printf("LoginPassword:");//用户密码输入 InputPW(loginpw);/*inputpassword,use'*'replace*/if(strcmp(loginpw,logincpw)==0)//相等 { strcpy(username,strupr(loginame)); strcpy(dirname,username); fp_mfd=fopen("d:\\osfile\\mfd.txt","rb");for(j=0;fread(&ufd_lp,sizeof(OSUFD_LOGIN),1,fp_mfd)!=0;j++)//记录用户名 { strcpy(str,"d:\\osfile\\"); strcat(str,ufd_lp.ufdname);//strcat(dest,char)添加char到dest结尾处 strcat(str,".txt"); ufd[j]=(OSUFD*)malloc(sizeof(OSUFD));//malloc向系统申请分配指定size个字节的内存空间分配二级文件空间 strcpy(ufd[j]->ufdname,strupr(ufd_lp.ufdname)); fp_ufd=fopen(str,"rb"); fcount[j]=0;//当前用户文件数目for(i=0;fread(&ufd[j]->ufdfile[i],sizeof(OSFILE),1,fp_ufd)!=0;i++,fcount[j]++)//记录用户文件 { ifopen[j][i].ifopen=0; ifopen[j][i].openmode=4; } fclose(fp_ufd); } fclose(fp_mfd); ucount=j; SetPANo(0); printf("\n\nLoginsuccessful!WelcometothisFileSystem\n\n"); loginsuc=1;return; }else//不相等 { printf("\n\n"); flag=1;while(flag) { printf("LoginFailed!PasswordError.TryAgain(Y/N):"); gets(a); ltrim(rtrim(a));if(strcmp(strupr(a),"Y")==0) { loginsuc=0; flag=0; }elseif(strcmp(strupr(a),"N")==0) { loginsuc=0; flag=0;return; } } } }else/*usernotexist*/ { printf("NewPassword(<=8):"); InputPW(loginpw);/*inputnewpassword,use'*'replace*/ printf("\nConfirmPassword(<=8):");/*inputnewpassword,use'*'replace*/ InputPW(logincpw);if(strcmp(loginpw,logincpw)==0)//相等 { strcpy(ufd_lp.ufdname,strupr(loginame));//写入目录 strcpy(ufd_lp.ufdpword,loginpw); fp_mfd=fopen("d:\\osfile\\mfd.txt","ab"); fwrite(&ufd_lp,sizeof(OSUFD_LOGIN),1,fp_mfd);//写入文件 fclose(fp_mfd); strcpy(username,strupr(loginame)); strcpy(dirname,loginame); strcpy(str,"d:\\osfile\\");//写入地址 strcat(str,username); strcat(str,".txt");if((fp_ufd=fopen(str,"rb"))==NULL) { fp_ufd=fopen(str,"wb"); fclose(fp_ufd); } fp_mfd=fopen("d:\\osfile\\mfd.txt","rb");for(j=0;fread(&ufd_lp,sizeof(OSUFD_LOGIN),1,fp_mfd)!=0;j++) { strcpy(str,"d:\\osfile\\"); strcat(str,ufd_lp.ufdname); strcat(str,".txt"); ufd[j]=(OSUFD*)malloc(sizeof(OSUFD)); strcpy(ufd[j]->ufdname,strupr(ufd_lp.ufdname)); fp_ufd=fopen(str,"rb");for(i=0;fread(&ufd[j]->ufdfile[i],sizeof(OSFILE),1,fp_ufd)!=0;i++,fcount[j]++)//记录用户文件 { ifopen[j][i].ifopen=0; ifopen[j][i].openmode=4; } fclose(fp_ufd); } fclose(fp_mfd); ucount=j; SetPANo(0); printf("\n\nLoginSuccessful!WelcometothisSystem\n\n"); loginsuc=1;return; }else//不相等 { printf("\n\n"); flag=1;while(flag) { printf("LoginFailed!PasswordError.TryAgain(Y/N):"); gets(a); ltrim(rtrim(a));if(strcmp(strupr(a),"Y")==0) { loginsuc=0; flag=0; }elseif(strcmp(strupr(a),"N")==0) { loginsuc=0; flag=0;return; } } } } }}voidDirF()/*DirFileSystem主目录*/{inti,j,count=0;charsfmode[25],sfpaddr[25],str[25]; clrscr();if(strcmp(strupr(ltrim(rtrim(dirname))),"")!=0)//不为空 { printf("\n\nd:\\%s>dir\n",dirname); printf("\n%14s%16s%14s%10s%18s\n","FileName","FileAddress","FileLength","Type","FileMode"); j=ExistD(dirname);for(i=0;i<fcount[j];i++) {if((i%16==0)&&(i!=0))//限制长度 { printf("\nPressanykeytocontinue.."); getch(); clrscr(); printf("\n%14s%16s%14s%10s%18s\n","FileName","FileAddress","FileLength","Type","FileMode"); } itoa(ufd[j]->ufdfile[i].fpaddr,str,10);//itoa()把整数转换为字符串 strcpy(sfpaddr,"file"); strcat(sfpaddr,str);if(ufd[j]->ufdfile[i].fmode==0)strcpy(sfmode,"ReadOnly");elseif(ufd[j]->ufdfile[i].fmode==1)strcpy(sfmode,"WriteOnly");elseif(ufd[j]->ufdfile[i].fmode==2)strcpy(sfmode,"ReadAndWrite");elsestrcpy(sfmode,"Protect"); printf("%14s%16s%14d%10s%18s\n",ufd[j]->ufdfile[i].fname,sfpaddr,ufd[j]->ufdfile[i].flength,"<FILE>",sfmode); } printf("\n%3dfile(s)\n",fcount[j]); }else//空 { printf("\n\nd:\\>dir\n"); printf("\n%14s%18s%8s\n","DirName","OwnFileCount","Type");for(i=0;i<ucount;i++) {if((i%16==0)&&(i!=0)) { printf("\nPressanykeytocontinue..."); getch(); clrscr(); printf("\n%14s%18s%8s\n","DirName","OwnFileCount","Type"); } printf("%14s%18d%8s\n",ufd[i]->ufdname,fcount[i],"<UFD>"); count=count+fcount[i]; } printf("\n%3ddir(s),%5dfile(s)\n",ucount,count); }}voidCreateF()/*CreateFile*/{intfpaddrno,flag=1,i;charfname[MAXNAME],str[50],str1[50],a[25];charfmode[25];if(strcmp(strupr(dirname),strupr(username))!=0)//目录名与用户名不相等 { printf("\nError.Youmustcreatefileinyourowndir.\n"); wgetchar=1; }else { printf("\nPleaseinputFileName:"); gets(fname); ltrim(rtrim(fname));if(ExistF(fname)>=0) { printf("\nError.Name\'%s\'hasalreadyexisted.\n",fname); wgetchar=1; }else { printf("PleaseinputFileMode(0-ReadOnly,1-WriteOnly,2-ReadandWrite,3-Protect):"); gets(fmode); ltrim(rtrim(fmode));if((strcmp(fmode,"0")==0)||(strcmp(fmode,"1")==0)||(strcmp(fmode,"2")==0)||(strcmp(fmode,"3")==0)) { fpaddrno=FindPANo();if(fpaddrno>=0)//找地址 { i=ExistD(username); strcpy(ufd[i]->ufdfile[fcount[i]].fname,fname);//记录 ufd[i]->ufdfile[fcount[i]].fpaddr=fpaddrno; ufd[i]->ufdfile[fcount[i]].fmode=atoi(fmode); ifopen[i][fcount[i]].ifopen=0; ifopen[i][fcount[i]].openmode=4; strcpy(str,"d:\\osfile\\file\\file"); itoa(fpaddrno,str1,10); strcat(str,str1); strcat(str,".txt"); fp_file=fopen(str,"wb"); fclose(fp_file); fcount[i]++;while(flag) { printf("Inputtextnow(Y/N):"); gets(a); ltrim(rtrim(a)); ufd[i]->ufdfile[fcount[i]-1].flength=0;if(strcmp(strupr(a),"Y")==0) { fp_file=fopen(str,"wb+");//写入二进制文件 ufd[i]->ufdfile[fcount[i]-1].flength=WriteF1(); flag=0; }elseif(strcmp(strupr(a),"N")==0) { flag=0; wgetchar=1; } } printf("\n\'%s\'hasbeencreatedsuccessfully!\n",fname); }else { printf("\nFail!NoDiskSpace.Pleaseformatyourdisk.\n"); wgetchar=1; } }else { printf("\nError.FileMode\'sRangeis0-3\n"); wgetchar=1; } } }}voidDeleteF()/*DeleteFile*/{charfname[MAXNAME],str[50],str1[50];inti,k,j;intfpaddrno1;if(strcmp(strupr(ltrim(rtrim(dirname))),"")==0)/*无法删除主目录的文件*/ { printf("\nError.Pleaseconverttoufddirbeforedelete.\n"); wgetchar=1; }if(strcmp(strupr(dirname),strupr(username))!=0)/*无法删除非自己目录的文件*/ { printf("\nError.Youcanonlymodifyfilemodeinyourselfdir.\n"); wgetchar=1; }else { printf("\nPleaseinputFileName:"); gets(fname);//从键盘获取所要删除的文件名 ltrim(rtrim(fname)); i=ExistF(fname);//获取文件编号if(i>=0) { k=ExistD(username);if(ifopen[k][i].ifopen==1)/*文件翻开时无法删除*/ { printf("\nError.\'%s\'isinopenstatus.Closeitbeforedelete.\n",fname); wgetchar=1; }else {if(ufd[k]->ufdfile[i].fmode==3)/*被保护的文件无法删除*/ { printf("\nError.\'%s\'isinprotectstatus.Closeitbeforedelete.\n",fname); wgetchar=1; }else { fpaddrno1=ufd[k]->ufdfile[i].fpaddr;//获取文件对应的物理文件名 fpaddrno[fpaddrno1]=0;//回收盘块for(j=i;j<fcount[k];j++) { ufd[k]->ufdfile[j]=ufd[k]->ufdfile[j+1];//从被删除的文件号开场，数组值全部前移一个 } strcpy(str,"d:\\osfile\\file\\file"); itoa(fpaddrno1,str1,10);//整数转化成字符串 strcat(str,str1); strcat(str,".txt"); remove(str);//删除物理文件 fcount[k]--;//用户文件数量少1 printf("\n\'%s\'isdeletedsuccessfully.\n",fname); wgetchar=1; } } }else//所要删除的文件不存在 { printf("\nError.\'%s\'dosenotexist.\n",fname); wgetchar=1; } }}voidModifyFM()/*ModifyFileMode*/{charfname[MAXNAME],str[50];inti,k;charfmode[25];/*whetherdelete*/if(strcmp(strupr(dirname),strupr(username))!=0) { printf("\nError.Youcanonlymodifyfilemodeinyourselfdir.\n"); wgetchar=1; }else { printf("\nPleaseinputFileName:"); gets(fname); ltrim(rtrim(fname)); i=ExistF(fname);if(i>=0) { k=ExistD(username);if(ifopen[k][i].ifopen==1) { printf("\nError.\'%s\'isinopenstatus.Closeitbeforemodify.\n",fname); wgetchar=1; }else {if(ufd[k]->ufdfile[i].fmode==0)strcpy(str,"readonly");/*FileMode*/elseif(ufd[k]->ufdfile[i].fmode==1)strcpy(str,"writeonly");elseif(ufd[k]->ufdfile[i].fmode==2)strcpy(str,"readandwrite");elsestrcpy(str,"Protect"); printf("\'%s\'filemodeis%s.\n",fname,strupr(str)); printf("Modifyto(0-readonly,1-writeonly,2-readandwrite,3-Protect):"); gets(fmode); ltrim(rtrim(fmode));if(strcmp(fmode,"0")==0) { ufd[k]->ufdfile[i].fmode=0; printf("\n\'%s\'hasbeenmodifiedtoREADONLYmodesuccessfully.\n",fname); wgetchar=1; }elseif(strcmp(fmode,"1")==0) { ufd[k]->ufdfile[i].fmode=1; printf("\n\'%s\'hasbeenmodifiedtoWRITEONLYmodesuccessfully.\n",fname); wgetchar=1; }elseif(strcmp(fmode,"2")==0) { ufd[k]->ufdfile[i].fmode=2; printf("\n\'%s\'hasbeenmodifiedtoREADANDWRITEmodesuccessfully.\n",fname); wgetchar=1; }elseif(strcmp(fmode,"3")==0) { ufd[k]->ufdfile[i].fmode=3; printf("\n\'%s\'hasbeenmodifiedtoFORBIDmodesuccessfully.\n",fname); wgetchar=1; }else { printf("\nError.\'%s\'isnotmodified.\n",fname); wgetchar=1; } } }else { printf("\nError.\'%s\'dosenotexist.\n",fname); wgetchar=1; } }}voidOpenF()/*OpenFile*/{charfname[MAXNAME];inti,k,j;if(strcmp(strupr(dirname),strupr(username))!=0)/*在自己的目录里才能翻开*/ { printf("\nError.Youcanonlyopeninyourselfdir.\n"); wgetchar=1; }else { k=ExistD(username);for(j=0;j<fcount[k];j++) { printf("%15s",ufd[k]->ufdfile[j].fname); }printf("\nPleaseinputFileName:"); gets(fname);//获取所要翻开的文件名 ltrim(rtrim(fname)); i=ExistF(fname);//获取目录编号if(i>=0) {if(ifopen[k][i].ifopen==1)//输入的文件是翻开的 { printf("\nError.\'%s\'isinopenstatus.\n",fname); wgetchar=1; }else { ifopen[k][i].ifopen=1;//修改为翻开的if(ufd[k]->ufdfile[i].fmode==0)/*根据文件的模式设置翻开模式*/ {ifopen[k][i].openmode=0;}elseif(ufd[k]->ufdfile[i].fmode==1) {ifopen[k][i].openmode=1;}elseif(ufd[k]->ufdfile[i].fmode==2) {ifopen[k][i].openmode=2;}elseifopen[k][i].openmode=3;printf("\n\'%s\'isopenedsuccessfully\n",fname); wgetchar=1; } }else//文件不存在 { printf("\nError.\'%s\'dosenotexist.\n",fname); wgetchar=1; } }}voidCloseF()/*CloseFile*/{charfname[MAXNAME];inti,k,j;if(strcmp(strupr(dirname),strupr(username))!=0)/*不在自己的目录里没法进展*/ { printf("\nError.Youcanonlyclosefileinyourselfdir.\n"); wgetchar=1; }else { k=ExistD(username);for(j=0;j<fcount[k];j++)/*列出已经翻开的文件*/ {if(ifopen[k][j].ifopen==1)//如果文件是翻开的 printf("%15s",ufd[k]->ufdfile[j].fname); }printf("\nPleaseinputFileName:"); gets(fname);//从键盘上读入所要关闭的文件 ltrim(rtrim(fname)); i=ExistF(fname);//获取文件编号if(i>=0) { ifopen[k][i].ifopen=0;//关闭文件 printf("\n\'%s\'closedsuccessfully\n",fname); wgetchar=1; }else//所要关闭的文件不存在 { printf("\nError.\'%s\'dosenotexist.\n",fname); wgetchar=1; } }}voidReadF()/*ReadFile*/{inti,k,n=0;charfname[MAXNAME];charstr[255],str1[255],c;if(strcmp(strupr(ltrim(rtrim(dirname))),"")==0)//必须在自己的目录内 { printf("\nError.Pleaseconverttoufddirbeforeread.\n"); wgetchar=1;return; } printf("\nCaution:Openfilefirst\n"); printf("OpenedFile(s)List:\n"); k=ExistD(dirname);for(i=0;i<fcount[k];i++) {if(ifopen[k][i].ifopen==1)//如果文件翻开 { printf("%15s",ufd[k]->ufdfile[i].fname); n++; }if((n%4==0)&&(n!=0))printf("\n"); } printf("\n%dfilesopenned.\n",n);if(n==0)wgetchar=1;//如果没有翻开的文件if(n!=0) { printf("\nPleaseinputFileName:"); gets(fname); ltrim(rtrim(fname)); i=ExistF(fname);if(i>=0) {if(ifopen[k][i].ifopen==1) {if((ifopen[k][i].openmode==0)||(ifopen[k][i].openmode==2))//如果文件只读或者读写 { itoa(ufd[k]->ufdfile[i].fpaddr,str,10); strcpy(str1,"file"); strcat(str1,str); strcpy(str,"d:\\osfile\\file\\"); strcat(str,str1); strcat(str,".txt"); fp_file=fopen(str,"rb"); fseek(fp_file,0,0); printf("\nThetextis:\n\n"); printf("");while(fscanf(fp_file,"%c",&c)!=EOF)if(c=='\n')printf("\n");elseprintf("%c",c); printf("\n\n%dLength.\n",ufd[k]->ufdfile[i].flength); fclose(fp_file); wgetchar=1; }elseif(ifopen[k][i].openmode==1)//如果文件只写 { printf("\nError.