/* ============================================================================ Name        : test.c Author      : blank Version     : Copyright   : Your copyright notice Description : 程序3-2 创建一个具有空洞的文件 ============================================================================ *//* * */#include 
     
      #include 
      
       #include 
       
        #include "ourhdr.h"char buf1[] = "abcdefghij";char buf2[] = "ABCDEFGHIJ";int main(int argc, char *argv[]){	int    fd;	int    n;	if ((fd = creat("file.hole", FILE_MODE)) < 0){		err_sys("create file.hole error\n");	}	/*	 * offset now = 10	 */	if (write(fd, buf1, 10) != 10){		err_sys("write buf1 to file.hole error\n");	}	/*	 * offset now = 16384	 */	if (lseek(fd, 16384, SEEK_SET) == -1){		err_sys("lseek file.hole error\n");	}	/*	 * offset now = 16394	 */	if (write(fd, buf2, 10) != 10){		err_sys("write buf2 to file.hole error\n");	}	exit(0);}