[Info-vax] select() returning -1

[Neil Rieck]

On Saturday, February 16, 2013 7:22:54 PM UTC-5, Sam Ferencik wrote:
> It seems select() really only works for sockets. The return value of -1 is accompanied by errno = 38, which is (errno.h):
> 
> 
> 
> #define ENOTSOCK        38     /* Socket operation on non-socket        */
> 
> 
> 
> So, is there an alternative call available on VMS?
> 
> 
> 
> Thanks,
> 
> Sam

You might wish to check out my research on "bad select 38" here:

http://www3.sympatico.ca/n.rieck/docs/openvms_notes_ssl.html#bad-select-38

As others have already posted, while it appears you can use "select()" on any unix program while applications on other operating systems (Like Windows, DOS, and OpenVMS) require you to do non-socket i/o. "TERM_SOCK.C" is a little program stub published by Compaq to do just this in OpenSSL-1.1B

http://www3.sympatico.ca/n.rieck/demo_vms_html/openvms_demo_index.html#openssl

Neil Rieck
Kitchener / Waterloo / Cambridge,
Ontario, Canada.
http://www3.sympatico.ca/n.rieck/OpenVMS.html