Re: flexfax: Problem compiling 4.0pl2 and 4.1b1

[Jim Dossey <jfd@mercury.net>]

Tim Rice wrote:
> 
> On Fri, 30 Jul 1999, Jim Dossey wrote:
> 
> > Tim Rice wrote:
> > >
> > > On Thu, 29 Jul 1999, Jim Dossey wrote:
> > >
> [snip]
> > > >
> > > > As a side note, I also tried using 4.0pl2 compiled on a 7.0.1 system but
> > > > it didn't work.  I ran a truss on it and faxq was getting an EAGAIN
> > > > error when it tried to fork.
> > >
> > > Make sure your port.h has #define CONFIG_MAXGID 60000
> > > That's one of the fixes the uw7 patch has.
> > > UnixWare 7 seems to have inherited some bugs from some
> > > of the Open Server 5 code.
> >
> > After a lot of research, it appears that hylafax has uncovered a bug in
> > Unixware 7.1.  Several of the hylafax processes do seteuid()'s before
> > fork()ing.  There is an old Unixware bug where root processes honor the
> > MAXUP tuneable, which is not supposed to happen.  They have mostly fixed
> > it, except when you call seteuid() before a fork().  setuid() works
> > okay.  I have submitted a bug report to SCO.  In the mean time, I have
> > increased MAXUP to be equal to NPROC.
> >
> Interesting.
> 
> The CONFIG_MAXGID workaround I was refering to is for a bug that
> shows up in the following test program. Opps, memory fault.
> The error on that one was EINVAL not EAGAIN.
> ....
> #include <sys/types.h>
> #include <sys/stat.h>
> #include <fcntl.h>
> #include <limits.h>
> 
> main ()
> {
> 
>         setgid(UID_MAX) ;
>         if (open ("./foo", O_RDWR|O_CREAT, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP) == -1 )
>                 perror ("open:") ;
> }
> 
> It works fine on SCO Open Server 3 (AKA 3.2v4.2) and all UnixWare before
> 7.0.0 but fails on UnixWare 7.0.0 and later and SCO Open Server 5.

I recently received a message from SCO tech support that they have
duplicated this problem and it has been forwarded to the programming
department for a fix.  Look for a PTF soon to fix this problem.

Jim Dossey



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