View of xos/tests/remove.c

/* Copyright (C) 2008  Emmanuel Varoquaux
 
   This file is part of XOS.
 
   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
 
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
 
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>. */
 
#include <unistd.h>
#include <fcntl.h>
#include <stdio.h>
 
static char *program_name;
 
static void die()
{
  perror(program_name);
  _exit(1);
}
 
static void fail()
{
  fprintf(stderr, "Failed !\n");
  _exit(1);
}
 
int main(int argc, char **argv)
{
  int fd;
  char buf[7];
 
  program_name = argv[0];
 
  printf("1\n");
  printf("2\n");
  if ((fd = open("dummy", O_RDWR | O_CREAT)) < 0)
    die();
  printf("3\n");
  if (remove("dummy") < 0)
    die();
  printf("4\n");
  if (open("dummy", O_RDONLY) >= 0)
    fail();
  perror(program_name);
  printf("5\n");
  if (write(fd, "hello!\n", 7) < 0)
    die();
  printf("6\n");
  if (read(fd, buf, 7) < 0)
    die();
  printf("7\n");
  close(fd);
  if (open("dummy", O_RDONLY) >= 0)
    fail();
  perror(program_name);
  printf("8\n");
 
  return 0;
}