VS2005中，access对只读目录的属性判断不准确

只读目录，
C:\>attrib +A +S +H +R testdir
C:\>attrib testdir
A  SHR     C:\testdir
(1)VC6.0的执行结果：
***********test stat***********************
file [c:\testdir] exists!
file [c:\testdir] is directory!
file [c:\testdir] can be read!
file [c:\testdir] can not be writed!
***********test access***********************
file [c:\testdir] exists!
file [c:\testdir] can not be writed!
file [c:\testdir] can be read!
(2)VS2005的执行结果
***********test stat***********************
file [c:\testdir] exists!
file [c:\testdir] is directory!
file [c:\testdir] can be read!
file [c:\testdir] can not be writed!
***********test access***********************
file [c:\testdir] exists!
file [c:\testdir] can be writed!
file [c:\testdir] can be read!
结论：在VS2005中，使用access判断的只读目录却有【写入】的属性。
         有什么高招，欢迎解答。
建议，在VS2005中对文件、目录进行权限校验时，最好不要用access。
#include <stdio.h>
#include <windows.h>
#include <stdio.h>
#include <io.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
int main(int argc ,char *argv[])
{
struct stat buf;
int ret = 0;
int i=0;

char *file = "c:\\testdir";

printf("***********test stat***********************\n");
ret = stat(file, &buf );
if(ret != 0)
{
printf("stat [%s] fail, errno=%d\n", file, errno);
return -1;
}
else
printf("file [%s] exists!\n", file);

if((buf.st_mode&S_IFDIR)==0)
printf("file [%s] is not directory!\n", file);
else
printf("file [%s] is directory!\n", file);

if((buf.st_mode&S_IREAD)!=0)
printf("file [%s] can be read!\n", file);
else
printf("file [%s] can not be read!\n", file);

if((buf.st_mode&S_IWRITE)!=0)
printf("file [%s] can be writed!\n", file);
else
printf("file [%s