opendir函数

　　        #include<sys/types.h>

　　        #include<dirent.h>

                DIR *dirptr = NULL;
                struct dirent *entry;
                dirptr = opendir("/cache/recovery/");

                EL ("/cache/recovery");

                if(dirptr == NULL)
                {
                    EL ("opendir failed ");
                    return NULL;
                }
                else
                {
                    EL ("opendir success ! ");
                    while (entry = readdir(dirptr))
                    {
                        printf("%s \n", entry->d_name);
                    }
                    closedir(dirptr);
                    return NULL;
                }