fputs (prompt, out); fflush (out);
fputs_unlocked (prompt, out); fflush_unlocked (out);
getpass (prompt)     const char *prompt;{  FILE *in, *out;  struct termios s, t;  int tty_changed;  static char *buf = NULL;  static size_t bufsize = 0;  ssize_t nread;  /* Try to write to and read from the terminal if we can.     If we can't open the terminal, use stderr and stdin.  */  in = fopen ("/dev/tty", "w+");  if (in == NULL)    {      in = stdin;      out = stderr;    }  else    out = in;  /* Turn echoing off if it is on now.  */  if (tcgetattr (fileno (in), &t) == 0)    {      /* Save the old one. */      s = t;      /* Tricky, tricky. */      t.c_lflag &= ~(ECHO|ISIG);      tty_changed = (tcsetattr (fileno (in), TCSAFLUSH|TCSASOFT, &t) == 0);    }  else    tty_changed = 0;  /* Write the prompt.  */  fputs (prompt, out);  fflush (out);  /* Read the password.  */  nread = __getline (&buf, &bufsize, in);  if (buf != NULL)    if (nread < 0)      buf[0] = '\0';    else if (buf[nread - 1] == '\n')      {	/* Remove the newline.  */	buf[nread - 1] = '\0';	if (tty_changed)	  /* Write the newline that was not echoed.  */	  putc ('\n', out);      }  /* Restore the original setting.  */  if (tty_changed)    (void) tcsetattr (fileno (in), TCSAFLUSH|TCSASOFT, &s);  if (in != stdin)    /* We opened the terminal; now close it.  */    fclose (in);  return buf;}