/*lsp lseek예제2 73p~74p*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/stat.h>

#define CREAT_MODE (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)

char buf1[] = "1234567890";
char buf2[] = "ABCDEFGHIJ";

int main()
{
    char * fname = "ssu_hole.txt";
    int fd;

    if((fd = creat(fname, CREAT_MODE)) < 0){
        fprintf(stderr, "creat error for %s\n", fname);
        exit(1);
    }

    if(write(fd, buf1, 12) != 12){
        fprintf(stderr, "buf1 write error\n");
        exit(1);
    }

    if(lseek(fd, 15000, SEEK_SET) < 0){
        fprintf(stderr, "lseek error\n");
        exit(1);
    }

    if(write(fd, buf2, 12) != 12){
        fprintf(stderr, "buf2 write error\n");
        exit(1);
    }

    exit(0);
}