OS X patch for run_erl.c

Ernie Makris <>
Tue Dec 7 14:46:15 CET 2004


Hi Jouni,

Can you send me the full patch for run_erl.c. I too am trying to execute
run_erl under
Fedora Core 3 and having problems.

Thanks
Ernie
----- Original Message ----- 
From: "Jouni Rynö" <>
To: "Bjorn Gustavsson" <>
Cc: <>
Sent: Tuesday, December 07, 2004 5:43 AM
Subject: Re: OS X patch for run_erl.c


> I still have the problem with Linux 2.6 kernel and udev etc,
> run_erl [19205] Tue Dec  7 12:40:01 2004
> Could not open pty master
>
> Fixed it with my own version of it, with a call to
>
>  #include <pty.h>
>  #include <utmp.h>
>
>  {
>      static char ttyname[] = "                                   ";
>
>      if (0 == openpty(&mfd, &sfd, ttyname, NULL, NULL)) {
>        *ptyslave = ttyname;
>        return mfd;
>      }
>    }
>
>
> On Mon, 2004-12-06 at 14:14 +0100, Bjorn Gustavsson wrote:
> > Thanks!
> >
> > We have look at this issue. I can't promise we'll be able to do that
> > for R10B-2.
> >
> > /Bjorn
> >
> > "Peter L" <> writes:
> >
> > > This Sunday I discovered that my FreeBSD 4.3 had exactly the same
> > > problem as Sean had in his OS X, with mknod/mkfifo in the run_erl.c
> > > file. When I applied the same patch as Sean did I was able to start
> > > erlang as a daemon, which I had not been able to do before on FreeBSD.
> > >
> > > Looking at this file run_erl.c in the latest R10B-1a version of
> > > OTP/Erlang, I was still unable to see any fix for this problem,
> > > despite it being well over a year since Sean reported the problem
> > > the first time.
> > >
> > > Is it in Erlang or in FreeBSD / OS X, where the problem needs to be
> > > fixed? Because I guess that Erlang is supposed to support also OS X
> > > and FreeBSD...
> > >
> > > A maybe related problem I had, was that I was not able to attach
> > > properly to the erlang daemon with the supplied bin/to_erl. Is there
> > > perhaps another fix that has to be applied for this to work under
> > > FreeBSD or OS X? Sean, any idea?
> > >
> > > /Peter
> > >
> > > %% ============ From the erlang list archive ===============
> > >
> > >     * To: Bengt Kleberg
> > >     * Subject: Re: OS X patch for run_erl.c
> > >     * From: Sean Hinde
> > >     * Date: Fri, 19 Sep 2003 23:46:54 +0100
> > >     * Cc: Erlang Questions
> > >
> > > On Monday, September 15, 2003, at 09:07  am, Bengt Kleberg wrote:
> > >
> > > > Sean Hinde wrote:
> > > >> Hi,
> > > >> The following patch to run_erl.c is required for Erlang to run in
> > > >> embedded mode under OS X. Without this patch run_erl fails to
create
> > > >> the
> > > >
> > > > ...deleted
> > > >> +#ifdef HAVE_MACH_O_DYLD_H
> > > >> +  if ((mkfifo(name, perm) < 0) && (errno != EEXIST))
> > > >> +#else
> > > >> +    if ((mknod(name, S_IFIFO | perm, 0) < 0) && (errno != EEXIST))
> > > >> +#endif
> > > >
> > > > perhaps mkfifo() is deprecated (or something even worse :-), but
would
> > > > it not have been better to test like this:
> > > >
> > > > #ifdef HAVE_MKFIFO
> > > > if ((mkfifo(name, perm) < 0) && (errno != EEXIST))
> > > > #else
> > > > if ((mknod(name, S_IFIFO | perm, 0) < 0) && (errno != EEXIST))
> > > > #endif
> > > >
> > >
> > > No doubt. I leave it to the real maintainers of Erlang to take care of
> > > elegance in the build process. All this difficult cross platform C
> > > stuff is light years from anything I claim competence in, beyond the
> > > annoying necessity to occasionally waste many hours making Erlang work
> > > on my favourite laptop :)
> > >
> > > Sean
> > >
> > >
> > > -- 
> > > Peter Lund
> > > Web: http://lundata.se
> > > Tel: +46 70 543 9416
> > >
> >
> -- 
>
>   Jouni Rynö                            mailto://Jouni.Ryno@fmi.fi/
>                                         http://www.geo.fmi.fi/~ryno/
>   Finnish Meteorological Institute      http://www.fmi.fi/
>   Space Research                        http://www.geo.fmi.fi/
>   P.O.BOX 503                           Tel      (+358)-9-19294656
>   FIN-00101 Helsinki                    FAX      (+358)-9-19294603
>   Finland                               priv-GSM (+358)-50-5302903
>
>   "It's just zeros and ones, it cannot be hard"
>
>




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