Date: Tue, 2 Oct 2007 15:14:18 +0300 From: "Vlad GALU" <dudu@dudu.ro> To: "=?ISO-8859-1?Q?Dag-Erling_Sm=F8rgrav?=" <des@des.no> Cc: freebsd-hackers@freebsd.org, Steven Hartland <killing@multiplay.co.uk>, freebsd-stable@freebsd.org Subject: Re: How to enable more than 256 pty's? Message-ID: <ad79ad6b0710020514n41d70cd9k6f16164899a7290c@mail.gmail.com> In-Reply-To: <86abr1yb68.fsf@ds4.des.no> References: <001f01c80407$1358d490$b6db87d4@multiplay.co.uk> <00ab01c8040c$7c408160$b6db87d4@multiplay.co.uk> <012101c804e5$efa7e9c0$b6db87d4@multiplay.co.uk> <86abr1yb68.fsf@ds4.des.no>
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On 10/2/07, Dag-Erling Sm=F8rgrav <des@des.no> wrote:
> "Steven Hartland" <killing@multiplay.co.uk> writes:
> > Any one got any pointers on this, the machine we running this app on is=
over
> > 90% idle so I really don't want to have to install a second machine jus=
t to
> > workaround a limit on the number of pty's, surely there's a way to incr=
ease
> > this?
>
> You need to change the way ptys are named in pty_create_slave() and
> pty_clone() in sys/kern/tty_pty.c. Just changing names won't help as
> the sequence is also hardcoded in pty_clone().
>
> You also need to change grantpt(), openpty() and any other userland code
> which has hardcoded knowledge of the naming scheme:
>
> des@ds4 ~% gfs pqrsPQRS
> src/sys/kern/tty_pty.c: static char *names =3D "pqrsPQRS";
> src/sys/kern/tty_pty.c: * pts =3D=3D /dev/tty[pqrsPQRS][0123456789abcdef=
ghijklmnopqrstuv]
> src/sys/kern/tty_pty.c: * ptc =3D=3D /dev/pty[pqrsPQRS][0123456789abcdef=
ghijklmnopqrstuv]
> src/contrib/telnet/telnetd/sys_term.c: for (cp =3D "pqrsPQRS"; *cp; cp++=
) {
> src/usr.sbin/ac/ac.c: strchr("pqrsPQRS", us=
r.ut_line[3]) !=3D 0 ||
> src/lib/libutil/pty.c: for (cp1 =3D "pqrsPQRS"; *cp1; cp1++) {
> src/lib/libc/stdlib/grantpt.c: #define PT_DEV1 "pqrsPQRS"
>
> Alternatively, set kern.pts.enable to 1, and find and fix the
> hang-on-close bug in the pts code (if it hasn't been fixed already)
Looks like it hasn't been. A friend who tried to set up an access
server for his company stumbled upon it.
>
> DES
> --
> Dag-Erling Sm=F8rgrav - des@des.no
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"
>
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