遞歸列出Linux中C上的目錄

Question

我需要列出目錄中的所有項目並列出所有子目錄中的所有項目。我有這個功能：

void rls_handler(const char *name, int indent){ 
DIR *dir; 
struct dirent *sd; 
dir = opendir(name); 
while((sd = readdir(dir)) != NULL){ 
    if(sd->d_type == DT_DIR){ //if item is a directory, print its contents 
     char path[1024]; 
     if((strcmp(sd->d_name, ".")) !=0 && (strcmp(sd->d_name, "..")) != 0){ //skip '.' and '..' 
      printf("%*s[%s]\n",indent,"",sd->d_name); 
      rls_handler(path,indent+2); //recurse through rls_handler with subdirectory & increase indentation 
    }else{ 
     continue; 
    }  
    }else{ 
    printf("%*s- %s\n",indent, "", sd->d_name); 
    } 
}//end while 
closedir(dir); 
}//end rls_handler 

我得到一個segfault在行：while((sd = readdir(dir)) != NULL)。任何人都可以幫我弄清楚爲什麼我得到這個錯誤？

Answer 1

請調用後添加一個測試來檢查：

dir = opendir(name); 

dir是不是空來繼續工作。

你的代碼看起來應該像

dir = opendir(name); 
if (dir!=NULL) 
{ 
while((sd = readdir(dir)) != NULL){ 
... 
} //end while 
closedir(dir); 
} // end if dir not NULL 
}//end rls_handler