Re: [PATCH] tty: Add EXTPROC support for LINEMODE

[Howard Chu]

Howard Chu wrote:
> > > diff --git a/arch/alpha/include/asm/termbits.h b/arch/alpha/include/asm/termbits.h
> > > index ad854a4..879dd35 100644
> > > --- a/arch/alpha/include/asm/termbits.h
> > > +++ b/arch/alpha/include/asm/termbits.h
> > > @@ -180,6 +180,7 @@ struct ktermios {
> > >    #define FLUSHO	0x00800000
> > >    #define PENDIN	0x20000000
> > >    #define IEXTEN	0x00000400
> > > +#define EXTPROC	0x10000000
> >
> > For Alpha this value should match OSF if possible.
>
> I'm grubbing around looking for a live Alpha system now, doesn't seem likely
> that I'll find one. Not sure what needs to match here, it's also unlikely that
> OSF/1 (or any other SVR4 platform) ever provided a definition for this bit.
> Looking at the telnet README:
>   >>>>
> This is a distribution of both client and server telnet.  These programs
> have been compiled on:
> 			telnet	telnetd
> 	BSD 4.4		  x	  x
> 	BSD 4.3 Reno	  X	  X
> 	UNICOS 8.0	  X	  X
> 	UNICOS 7.C	  X	  X
> 	UNICOS 7.0	  X	  X
> 	UNICOS 6.1	  X	  X
> 	BSDI 1.0	  X	  X
> 	Solaris 2.2       x       x (no linemode in server)
> 	Solaris 2.3       x       x (no linemode in server)
> 	SunOs 4.1.3	  X	  X (no linemode in server)
> 	Ultrix 4.3	  X	  X (no linemode in server)
> 	DYNIX V3.0.17.9	  X	  X (no linemode in server)
> 	HP-UX 8.0	  x       x (no linemode in server)
> <<<<
>
> I doubt that anyone ever ported this feature over to those OSes.

Closest thing I've found so far is for HPUX 11i Version 2:
http://docs.hp.com/en/B2355-90848docs/B2355-90848docs.pdf

>>>>
TIOCREMOTE This ioctl puts the STREAMS pty in and out of Remote Mode. When
           Remote Mode is on, input data will be flow-controlled and passed
           through ldterm without any input processing regardless of the
           terminal mode. When the pty master driver receives this ioctl,
           it will send an M_CTL message downstream to ldterm via ptm, pts,
           and ptem. The command in the M_CTL message is set to MC_NO_CANON
           or MC_DO_CANON depending whether to turn on or off the Remote
           Mode. The format of this ioctl is:
                 int ioctl(master_fd, TIOCREMOTE, argument)
           where the argument is set to 1 to turn on Remote Mode and 0 to
           turn it off. Remote Mode is normally used when doing remote line
           editing in a window manager, or whenever flow-controlled input is
           required. Each write to the master device produces a record
           boundary for the process reading the slave devices. In normal
           usage, a write of data is like the data typed as a line on the
           terminal; a write of 0 (zero) bytes is like typing an EOF
           (End-of-File) character.

TIOCSIGNAL This ioctl allows the master process to send a signal to the slave
           process. The format of this ioctl is:


                 int ioctl(master_fd, TIOCSIGNAL, argument)
           where the argument is the signal number as defined in the header
           file <sys/signal.h>. For example the master process can send an
           SIGINT signal to the slave process by doing:
                 ioctl(master_fd, TIOCSIGNAL, SIGINT)
<<<<

TIOCREMOTE seems to be the SVR4 analogue to TIOCPKT without any of the useful 
parts; it doesn't include the prefix byte, so it doesn't provide any state 
change information.

--
  -- Howard Chu
  CTO, Symas Corp.           http://www.symas.com
  Director, Highland Sun     http://highlandsun.com/hyc/
  Chief Architect, OpenLDAP  http://www.openldap.org/project/
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