funtc210b.dat

来自「指令字典2005里面可以方便的查找一些函数」· DAT 代码 · 共 34 行

#include <io.h>
#include <fcntl.h>
#include <sys\stat.h>
#include <process.h>
#include <share.h>
#include <stdio.h>
int main(void)
{
    int handle, status;
    long length;
    handle = sopen("c:\autoexec.bat",O_RDONLY,SH_DENYNO,S_IREAD);
    if (handle < 0)
    {
        printf("sopen failed
");
        exit(1);
    }
    length = filelength(handle);
    status = lock(handle,0L,length/2);
    if (status == 0)
        printf("lock succeeded
");
    else
       printf("lock failed
");
    status = unlock(handle,0L,length/2);
    if (status == 0)
        printf("unlock succeeded
");
    else
        printf("unlock failed
");
    close(handle);
    return 0;}