Path: utzoo!attcan!uunet!mcvax!unido!ztivax!tumuc!lan!ocker
From: ocker@lan.informatik.tu-muenchen.dbp.de (Wolfgang Ocker)
Newsgroups: comp.os.os9
Subject: Re: Porting UNIX code to OS/9-68K
Message-ID: <1103@infovax.lan.informatik.tu-muenchen.dbp.de>
Date: 27 Jun 89 14:25:44 GMT
References: <1625@brwa.inmos.co.uk>
Reply-To: ocker@lan.informatik.tu-muenchen.dbp.de (Wolfgang Ocker)
Organization: Inst. fuer Informatik, TU Muenchen, W. Germany
Lines: 74

In article <1625@brwa.inmos.co.uk> davidb@inmos.co.uk () writes:
>What is involved in porting UNIX programs to OS/9-69000 ??
>2) Yes the library supports many UNIX calls (more now than it used
>   to). However, the main omissions are fork() and isatty().
>   Both of these cause major problems.

fork() is a real problem, isatty() not:

#include <sgstat.h>

/*
 * i s w h a t
 */
static int iswhat(p)
  int p;
{
  struct  _sgs  opt;

  if (_gs_opt(p, &opt) < 0)
    return(-1);
  return(opt._sgs_class);
}

/*
 * i s a t t y
 */
int isatty(f)
  int f;
{
  int t;
		      
  if ((t = iswhat(f)) < 0)
    return(0);

  return(t == 0);
}


/*
 * i s a p i p e
 */
int isapipe(f)
  int f;
{
  int t;
				      
  if ((t = iswhat(f)) < 0)
    return(0);

  return(t == 1);
}


>3) You don't have timers.

But they are near. In 2.2 alarms are implemented, but don't
work correctly in all cases.

>There are masses of things which are different but these are
>the ones which have caused me grief. However, you certainly
>can get pretty far porting UNIX code to OS9/68000. For instance,
>I've had "yacc", "lex", "kermit" and many other things going
>without much trouble. (I don't think X11 will work :)

X11.R3 runs on OSK (I have seen it with my own eyes.) A company
in Germany has ported it.

Regards,
/// Wolfgang
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