Posix semaphore problem (fwd)

[Andre Guibert de Bruet]

Hi,

The attached message is from current at . On 5-CURRENT, there is no "sem"
kld. The closest kld by name is sysvsem.ko but a grep on the output of
strings for "sem_open" doesn't return anything. Any ideas?

Please CC me, as I'm not subscribed to doc at .

Regards,

> Andre Guibert de Bruet | Enterprise Software Consultant >
> Silicon Landmark, LLC. | http://siliconlandmark.com/    >

---------- Forwarded message ----------
Date: Sun, 23 Mar 2003 10:25:34 -0500
From: Craig Rodrigues <rodrigc at attbi.com>
To: Hongbo Li <stevensbsd at yahoo.com>
Cc: current at FreeBSD.ORG
Subject: Re: Posix semaphore problem

On Sun, Mar 23, 2003 at 01:55:03AM -0800, Hongbo Li wrote:
> I just run a example program from the book unp2v2
> written W.Richard Stevens. The program includes a call
> to sem_open. The compilation was ok. But when I run it
> on FreeBSD 5-current(recent),the system print "Bad
> system call (core dumped)". The program code :

I get the same problem.  Read the man page for sem(4) which
explains the kernel option or kernel module that needs
to be used for POSIX semaphores to work.

However, I am not sure that this man page is entirely correct,
since if I do:

kldload sem

I get "No such file or directory".


-- 
Craig Rodrigues
http://home.attbi.com/~rodrigc
rodrigc at attbi.com

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