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Date: Thu, 4 Jan 2001 17:41:26 -0500
From: Christopher Faylor <cgf AT redhat DOT com>
To: cygwin AT cygwin DOT com
Cc: ehud AT unix DOT simonwiesel DOT co DOT il
Subject: Re: How to create tty/pty pair ?
Message-ID: <20010104174126.B23713@redhat.com>
Reply-To: cygwin AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com, ehud AT unix DOT simonwiesel DOT co DOT il
References: <200012302119 DOT XAA26674 AT linux.>
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In-Reply-To: <200012302119.XAA26674@linux.>; from ehud@unix.simonwiesel.co.il on Sat, Dec 30, 2000 at 11:19:17PM +0200

On Sat, Dec 30, 2000 at 11:19:17PM +0200, Ehud Karni wrote:
>I do not know how to make a tty/pty pair with Cygwin.

/dev/ptmx is the mechanism.  Here is some sample code:

    char *slave;
    int om = open ("/dev/ptmx", O_RDWR);
    if (om < 0)
      die ("/dev/ptmx", 1);

    if (grantpt (om) < 0)
      die ("grantpt", 2);

    if (unlockpt (om) < 0)
      die ("unlockpt", 3);

    slave = ptsname (om);
    if (slave == NULL)
      die ("ptsname", 4);

cgf

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