topic Re: 11.23 PA logins command - return code 236 in Operating System - HP-UX

11.23 PA logins command - return code 236

Mick_chair — Thu, 26 Nov 2009 10:26:36 GMT

I have noticed that on version 11.23 I get exit status 236 from the following command:

logins -oxl root ; echo $?
> 236

However on 11.31 I get the expected code 0

logins -oxl root ; echo $?
> 0

The output is correct for both versions and contains no error data.Can anyone explain this ? Its causing problems with some automation
we are using which calls the logins command and check the exit status.

Re: 11.23 PA logins command - return code 236

Dennis Handly — Thu, 26 Nov 2009 20:12:57 GMT

Unfortunately logins(1m) doesn't mention anything about RETURN VALUE.

I suppose you could run tusc on it to see what it returns and where.

Re: 11.23 PA logins command - return code 236

Mick_chair — Fri, 27 Nov 2009 09:16:06 GMT

Hi I got this response from another forum

"the wait() system call returns the lowest 8 bits of the actual return code.
It is treated as if it were an "unsigned char" in effect. It is not. So, negative small numbers returned become return values > 127, for example. Think ~(return value), we saw this on migrating from 11.0 to HPUX 11.23 PA_RISC-2 boxes, running 32 bit mode code. The 11.0 code is binary compatible, so we did not recompile.

Create a hashed alias in /etc/profile: a shell script wrapper for logins. It masks the return value to zero or 1. We ran into other commands that do this as well."

Running Tusc ..
write(1, "r o o t : 0 : s y s : 3 : : / : ".., 44) ..... = 44
getpid() ..................................... = 10519 (10518)
unlink("/var/spool/sockets/pwgr/client10519") ............ = 0
exit(236) ...................................... WIFEXITED(236)
236

I guess I will have to raise a problem for this

Re: 11.23 PA logins command - return code 236

Dennis Handly — Tue, 01 Dec 2009 01:36:47 GMT

The source code for 11.31 only indicate the exit values of 0 and 1. I don't see 236 nor -20.
When I try your example on 11.23, I get 0.

>exit(236) ........ WIFEXITED(236) 236

You may have to get out your debugger to see where it occurs.

Re: 11.23 PA logins command - return code 236

Ratzie — Tue, 01 Dec 2009 21:09:41 GMT

I am experiencing the exact same thing on 11.23
Never happened under 11.11.

I wrote a security script that checks this, and it kept failing until I realized it was returning 236

Could use some help as well.

Re: 11.23 PA logins command - return code 236

Patrick Wallek — Tue, 01 Dec 2009 22:12:14 GMT

Ditto for the failure on HP-UX 11.23 on a PA-RISC box here. Just running 'logins' as root results in a return code of 236.

This system has been patched in the last month with all patches recommended by an SWA analysis.

Re: 11.23 PA logins command - return code 236

Dennis Handly — Wed, 02 Dec 2009 04:22:36 GMT

>Ratzie: I am experiencing the exact same thing on 11.23

I was using an Integrity box and am not sure why it should be different unless it is falling off the end of main with no return?
(Ah, the IPF C/aC++ compiler supports the C99 and C++ Standards that require this to return 0.)

I'll see if I can find a PA executable.

Re: 11.23 PA logins command - return code 236

Dennis Handly — Wed, 02 Dec 2009 22:30:44 GMT

>ME: Ah, the IPF C/aC++ compiler supports the C99 and C++ Standards that require this to return 0.

Yes, this is exactly the problem, it fell off the end. It was fixed for 11.31.

Re: 11.23 PA logins command - return code 236

Mick_chair — Fri, 12 Mar 2010 14:34:05 GMT

We have been trying to find ways around this.
Is it something that HP might consider getting a patch released for ?

Re: 11.23 PA logins command - return code 236

Dennis Handly — Fri, 12 Mar 2010 19:46:21 GMT

>Is it something that HP might consider getting a patch released for?

Possibly, have you contacted the Response Center?