rename command - 😎（但是文件有风险违反命名规则）🤯

Author: LukeBriton

filesys.h

@@ -173,6 +173,7 @@ extern unsigned short iname(char *);
 extern unsigned int  access(unsigned int,struct inode *,unsigned short);
 extern void          _dir();
 extern void          _pwd(char *);
+extern void          _rename(char *, char *);
 extern void          who(unsigned short);
 extern void          mkdir(char *);
 extern void          chdir(char *);

name.cpp

@@ -40,7 +40,23 @@ unsigned short iname(char *name){
 	return i; 
 }
 
-
+void _rename(char *oldname, char *newname)//new 是保留字
+{
+	int i = namei(oldname);
+	if (i == -1)
+	{
+		printf("当前目录下无 %s\n", oldname);
+		return;
+	}
+	int j = namei(newname);
+	if (j != -1)
+	{
+		printf("当前目录下已有与 %s 重名的\n", newname);
+		return;
+	}
+	strcpy(dir.direct[i].d_name, newname);
+	return;
+}
 
 
 

shell.cpp

@@ -1,6 +1,6 @@
 #include "filesys.h"
 #define CLEN 10
-#define CNUM 10 
+#define CNUM 15 
 //enum ctype  
 char commands[CNUM][CLEN]={
 "exit",
@@ -12,7 +12,8 @@ char commands[CNUM][CLEN]={
 "write",
 "read",
 "who",
-"pwd"
+"pwd",
+"rename"
 };
 int getcid(char *command){
 	int i;
@@ -139,6 +140,16 @@ int shell(int user_id,char *str){
 		_pwd(wd);
 		printf("%s\n", wd);
 		break;
+	case 10:
+		token = strtok(NULL, seps);
+		tstr = token;
+		token = strtok(NULL, seps);
+		if (token == NULL) {
+			printf("rename 命令的正确格式为rename oldname newname，请检查命令!\n");
+			break;
+		}
+		_rename(tstr, token);
+		break;
 	case 0:
 		return 0;
 	default: