linux:判断文件夹是否为空

#include<sys/types.h>
#include <stdio.h> 
#include <dirent.h>

#define EMPTY                1005
#define NON_EMPTY        1006

int check_dir(const char *path)
{
    DIR *pDir = NULL;
    struct dirent *p_dirent;
    pDir = opendir(path);
    if(pDir==NULL){
        printf("open %s fail\n",path);
        return -1;
    }
    while(p_dirent=readdir(pDir)){
        if(strcmp(p_dirent->d_name,".")!=0&&strcmp(p_dirent->d_name,"..")!=0)//空目录也有"."和".."文件
            return NON_EMPTY;
    }
    return EMPTY;

}