Пример #1
0
/* Change the ownership and access permission of the slave pseudo
   terminal associated with the master pseudo terminal specified
   by FD.  */
int
grantpt (int fd)
{
#if !defined __ASSUME_DEVPTS__
  struct statfs fsbuf;
# ifdef PATH_MAX
  char _buf[PATH_MAX];
# else
  char _buf[512];
# endif
  char *buf = _buf;

  if (pts_name (fd, &buf, sizeof (_buf)))
    return -1;
  
  if (statfs (buf, &fsbuf) < 0)
    return -1;

  /* If the slave pseudo terminal lives on a `devpts' filesystem, the
     ownership and access permission are already set.  */
  if (fsbuf.f_type != DEVPTS_SUPER_MAGIC && fsbuf.f_type != DEVFS_SUPER_MAGIC)
  return __unix_grantpt (fd);
#endif
  return 0;
}
Пример #2
0
/* Change the ownership and access permission of the slave pseudo
   terminal associated with the master pseudo terminal specified
   by FD.  */
int grantpt (int fd)
{
  struct statfs fsbuf;
  char _buf[PATH_MAX];
  char *buf = _buf;

  if (pts_name (fd, &buf, sizeof (_buf)))
    return -1;

  if (__libc_statfs (buf, &fsbuf) < 0)
    return -1;

  /* If the slave pseudo terminal lives on a `devpts' filesystem, the
     ownership and access permission are already set.  */
  if (fsbuf.f_type != DEVPTS_SUPER_MAGIC && fsbuf.f_type != DEVFS_SUPER_MAGIC)
    return __unix_grantpt (fd);

  return 0;
}
Пример #3
0
/* Change the ownership and access permission of the slave pseudo
   terminal associated with the master pseudo terminal specified
   by FD.  */
int
grantpt (int fd)
{
  struct statfs fsbuf;
#ifdef PATH_MAX
  char _buf[PATH_MAX];
#else
  char _buf[512];
#endif
  char *buf = _buf;

  if (__builtin_expect (pts_name (fd, &buf, sizeof (_buf)), 0))
    {
      int save_errno = errno;

      /* Check, if the file descriptor is valid. pts_name returns the
	 wrong errno number, so we cannot use that.  */
      if (__libc_fcntl (fd, F_GETFD) == -1 && errno == EBADF)
	return -1;

       /* If the filedescriptor is no TTY, grantpt has to set errno
          to EINVAL.  */
       if (save_errno == ENOTTY)
         __set_errno (EINVAL);
       else
	 __set_errno (save_errno);

       return -1;
    }

  if (__statfs (buf, &fsbuf) < 0)
    return -1;

  /* If the slave pseudo terminal lives on a `devpts' filesystem, the
     ownership and access permission are already set.  */
  if (fsbuf.f_type == DEVPTS_SUPER_MAGIC || fsbuf.f_type == DEVFS_SUPER_MAGIC)
    return 0;

  return __unix_grantpt (fd);
}