#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>


int
main()
{
        // 1. Create a file by creating a symlink to a nonexistent file,
        // then opening it with O_CREAT specified.
        unlink("link4");
        unlink("file4");
        int ret = symlink("file4", "link4");
        printf("symlink -> %d\n", ret);
        ret = open("link4", O_RDWR | O_TRUNC | O_CREAT, 0666);
        if (ret < 0) {
                perror("open");
                return ret;
        } else {
                printf("ret -> %d\n", ret);
        }

        // 2. Trying to create a file through a symlink to a path in
        // a nonexistent directory should fail with ENOENT.
        const char *linkname = "link4";
        struct stat statbuf;
        unlink(linkname);
        assert(symlink ("/nonexistent/test8237/24715863701440", linkname) >= 0);
        assert(stat(linkname, &statbuf) < 0);

        ret = open(linkname, O_RDWR | O_TRUNC | O_CREAT, 0666);

        if (ret >= 0)
                printf("ret = %d\n", ret);
        else if (errno == ENOENT)
                printf("ret = %d, errno == ENOENT\n", ret);
        else
                printf("ret = %d, errno == %s\n", ret, strerror (errno));

        assert(ret < 0);
        assert(errno == ENOENT);

        printf("OK\n");
        return 0;
}