文件目录操作opendir、readdir

#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include <stdlib.h>
#include <netinet/in.h>
#include <dirent.h>
#include <arpa/inet.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <signal.h>
#include <pthread.h>
#include <semaphore.h>
#include <errno.h>
#include <stdio.h>
#include <fcntl.h>
#include <string.h>

int FileNameScan(char *pcPath)
{

	DIR             *pFile      = NULL;        //打开目录返回的指针
	struct dirent   *psDirInfo  = NULL;        //读取目录返回的结构图指针
	unsigned char    iRetValue;
	pFile = opendir(pcPath);             //打开目录
	if(NULL == pFile)
	{
	    printf("DevXmlAnalysis.c: %s is not exist!
", pcPath);
		return -1;			//如果目录为空，返回-1
	}
    else 
	{
	 /*
		1、也就是说readdir每调用一次，pcPath目录中的文件就重新扫描另1个
		2、至于扫描顺序这里暂且不研究
	 */
		while(NULL != (psDirInfo = readdir(pFile))) 
		{
			iRetValue = strlen(psDirInfo -> d_name);
			
			printf("file length = %d,file name is %s

",iRetValue,psDirInfo -> d_name);
		}
	}
	
	
	closedir(pFile);

	return 0;
}
int main()
{

	FileNameScan("./");
	return 0;
}