Date: Fri, 13 Nov 1998 13:50:01 -0800 (PST) From: Jacques Vidrine <n@nectar.com> To: freebsd-ports@FreeBSD.ORG Subject: Re: ports/8609: eklogin service (kerberos klogind) fails to print DES msg Message-ID: <199811132150.NAA13178@freefall.freebsd.org>
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The following reply was made to PR ports/8609; it has been noted by GNATS.
From: Jacques Vidrine <n@nectar.com>
To: freebsd-gnats-submit@freebsd.org, cschuber@uumail.gov.bc.ca,
dima@freebsd.org
Cc: Subject: Re: ports/8609: eklogin service (kerberos klogind) fails to print DES
msg
Date: Fri, 13 Nov 1998 15:49:13 -0600
The same behavior is seen under -CURRENT.
The patch in question defines HAVE_OPENPTY. This causes
the Kerberos utility library to use openpty rather than
the code built into Kerberos (pty_getpty) for allocating
a master pty.
I've determined that the difference that tickles this bug
between the openpty code and the pty_getpty code is that
openpty opens the slave as well as the master, while pty_getpty
just opens the master.
I was able to recreate the bug by undefining HAVE_OPENPTY (so
that the built-in pty_getpty code would be used), but adding
a gratuitous open/close of the slave pty in krlogind.c. i.e.
something like:
if ((retval = pty_getpty(&p,line, sizeof(line)))) {
com_err(progname, retval, "while getting master pty");
exit(2);
}
+ {
+ int dummy = open(line, O_RDWR, 0);
+ if (dummy)
+ close(dummy);
+ }
So I am theorizing that some state change caused by the open
and/or close of the tty is occurring that is tickling some
bug. Unfortunately, I'm not familiar enough with the terminal
drivers to understand what.
--
Jacques Vidrine / n@nectar.com / nectar@FreeBSD.org
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