[Info-vax] Problem with sem_open() call

[John Reagan]

On Wednesday, September 21, 2016 at 1:48:23 PM UTC-4, Stephen Hoffman wrote:
> On 2016-09-21 17:20:51 +0000, Alexander Saprykin said:
> 
> > Are here in the group any developers from the VMS Software to check it 
> > in the VMS source? I don't know whom to contact to clarify this issue. 
> > I still unsure if it is a bug or not, maybe underlying (I guess) 
> > Distributed Lock Manager need to be configured or something else.
> 
> Folks from VSI do follow this newsgroup.   They will probably see this 
> thread.    As for HPE, you'd have to have somebody with a support 
> contract log a call.   Same path (officially) for reporting bugs and 
> requesting fixes from VSI, too.
> 
> > I mean it is a primary use case of the POSIX named semaphores, I do not 
> > believe they released a new API without testing it. If it is a bug, it 
> > can affect lot of other software which can be potentially ported on 
> > OpenVMS.
> 
> I don't see an error in your code, and I do see the misbehavior, and 
> that's with fairly recent OpenVMS Alpha running on a supported Alpha 
> box.   Which usually means there's a bug in the code, and a gap in the 
> testing.   OpenVMS has had its share of bugs over the years, as have 
> other platforms.
> 

I hadn't used these before...  and I must be doing something wrong...  What file isn't being found?

$ type sem_create.c
#include <semaphore.h>
#include <stdio.h>
#include <errno.h>

int main ()
{
    sem_t * my_semaphore;

    my_semaphore = sem_open ("/mysemaphore", O_CREAT | O_EXCL, 0660, 0);

    if (my_semaphore == SEM_FAILED) {
        if (errno == EEXIST)
            printf ("[OK] Semaphore exists\n");
        else if (errno == EVMSERR)
            printf ("[FAIL] VMS Error code: %d\n", vaxc$errno);
        else
            printf ("[FAIL] Error code: %d\n", errno);
    } else
        printf ("[OK] Semaphore created\n");

    return 0;
}
$ r sem_create
[FAIL] VMS Error code: 98962
$ exit 98962
%RMS-E-FNF, file not found