linux下目录遍历的代码

void test_lsls(char *dirname, int level)
{
    DIR *dp;
    struct dirent *dirp;
    char* dirnametmp = (char *)malloc(256);
    //char dirnametmp[128] = {0};

    char print_space[128] = {0};
    int ltmp = level;

    dp = opendir(dirname);
    if(dp == NULL)
    {
        printf("can't find %s\n", dirname);
        return;
    }

    if(dirname[strlen(dirname) - 1] == '/')
    {
        sprintf(dirnametmp, "%s", dirname);
    }
    else
    {
        sprintf(dirnametmp, "%s/", dirname);
    }

    //printf("%s\n", dirnametmp);


    while(ltmp)
    {
        strcat(print_space, "| ");
        ltmp--;
    };

    while(dirp = readdir(dp))
    {
        printf("%s%s\n", print_space, dirp->d_name);

        /*不显示.和..目录*/

        if(dirp->d_type == 4 && strcmp(dirp->d_name, ".") && strcmp(dirp->d_name, ".."))
        {
            char tmp[256] = {0};
            strcat(tmp, dirnametmp);
            strcat(tmp, dirp->d_name);
            test_lsls(tmp, level+1);
        }
    }

    closedir(dp);
    free(dirnametmp);
}