p4-2.c

UNIX程序设计教程

#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include "err_exit.h"
int main(void)
{
    int         link_value;
    const char  *path1 = "testfile1";
    const char  *path2 = "testfile2";
    struct stat orig_buf, new_buf;
    printf("create testfile\n");
    creat(path1, S_IRWXU|S_IRWXG|S_IRWXO);
    printf("get testfile1 status\n");
    stat(path1, &orig_buf);
    printf("orig_buf.st_nlink=%d\n", orig_buf.st_nlink );
    printf("create link from %s to %s\n",path1,path2);
    if (link(path1, path2)) 
       err_exit("link() call failed");
    printf("link() call successful\n");
    stat (path1, &new_buf);
    printf("new_buf.st_nlink=%d\n", new_buf.st_nlink );
    return(EXIT_SUCCESS);
}