操作系统课程设计 模拟文件管理.zip

#include "filesys.h" int openfile(char filename[]) { int i, i_node_num, j; for (i = 0; i < 1024; i++) { if (strcmp(filename, dirn[i].f_name) == 0 && i_node[dirn[i].i_num].i_mode == DOCUMENT && i_node[dirn[i].i_num].i_Uid == uname[login].u_id && strcmp(dirn[i].f_dname, cur_dir) == 0) { if (uname[login].u_open < OFile) { uname[login].u_open++; uname[login].u_ofile[uname[login].u_open] = dirn[i].i_num; } else { cout << "该用户可打开文件数已达上限" << endl; } i_node_num = dirn[i].i_num; break; } } if (i >= 1024) { cout << "该文件不存在，请重新选择。" << endl; return -1; } string c; cout << "\t文件名\t文件类型\t文件大小\t读取权限\t修改时间\t上级目录\t用户" << endl; for (j = 0; j < 1024; j++) { if (strcmp(filename, dirn[j].f_name) == 0 && (i_node[i_node_num].i_mode == DOCUMENT)) { cout << "\t" << dirn[j].f_name; //文件名 cout << "\t文件"; //文件类型 cout << "\t" << i_node[i_node_num].i_size; //文件大小 switch (i_node[i_node_num].i_limit) { case 0:cout << "\t可读可写"; case 1:cout << "\t可读不可写"; case 2:cout << "\t可写不可读"; break; } cout << "\t" << i_node[i_node_num].i_time; //修改时间 cout << "\t" << dirn[j].f_dname; //上级目录 for (int k = 0; k < 8; k++) { if (i_node[i_node_num].i_Uid == uname[k].u_id) { c = uname[k].u_name; } } cout << "\t" << c; //所属用户 cout << endl; //cout << "\t文件物理地址\t"; //cout << i_node[i_node_num].i_address[0] << "---" << i_node[i_node_num].i_address[i_node[i_node_num] // .i_size] << endl; break; } else { cout << "该文件不存在或存在问题" << endl; } } return i_node_num; } void showfolder(char foldername[]/*临时当前目录名*/) { int i; cout << "用户：" << uname[login].u_name << endl; //当前用户 cout << "\t包含文件\t文件类型\t文件大小\t修改时间\t上级目录" << endl; for (i = 0; i < 1024; i++) { if (strcmp(foldername, dirn[i].f_dname) == 0 && i_node[dirn[i].i_num].i_Uid == uname[login].u_id) { cout << "\t" << dirn[i].f_name; //文件名 switch (i_node[dirn[i].i_num].i_mode) { case FOLDER:cout << "\t文件夹"; break; case DOCUMENT:cout << "\t文件 "; break; } cout << "\t" << i_node[dirn[i].i_num].i_size; //文件大小 cout << "\t" << i_node[dirn[i].i_num].i_time; //修改时间 cout << "\t" << dirn[i].f_dname; //上级目录 cout << endl; } else { // cout << "文件夹为空" << endl; } } } void openfolder(char foldername[]) { cout << 4 << endl; int i; for (i = 0; i < 1024; i++) { cout << foldername << "@" << cur_dir << endl; cout << dirn[i].f_name << "!" << dirn[i].i_num << "!" << i_node[dirn[i].i_num].i_mode << "!" << dirn[i].f_dname << endl; if (strcmp(foldername, dirn[i].f_name) == 0 && i_node[dirn[i].i_num].i_mode == FOLDER && //i_node[dirn[i].i_num].i_Uid == uname[login].u_id && strcmp(dirn[i].f_dname, cur_dir) == 0) { //设置当前目录名 strcpy(cur_dir, dirn[i].f_name); cout << cur_dir << endl; //显示当前目录项 showfolder(cur_dir); return; } } if (i >= 1024) { cout << "文件夹不存在或文件夹不属于该用户" << endl; } }