David, I guess you will use a mapping for your work area in your program. So you can always have code which compares the length needed with the length available. I just don't know what you do when your needs are greater than they supply!
Issue a message? Yes, but how many messages will you get? (Ans: Millions!) Give up without a message? Not very useful at all. Assuming this is a dynamic exit, you could issue a message and then deactivate the exit. None of these is very satisfactory. I suspect the length is always the same, but IBM reserve the right to increase it. Come on IBM. Give us the answer! Lennie Dymoke-Bradshaw | Security Lead | RSM Partners Ltd Web: www.rsmpartners.com ‘Dance like no one is watching. Encrypt like everyone is.’ -----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of David Crayford Sent: 08 October 2019 14:22 To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: [IBM-MAIN] SMF exit IEFU086 work area size Thank you Lennie, You make some very good observations. I think the salient point of the work area is so the exit routine doesn't need to allocate any storage for obvious reasons (performance). I'm leery of using an exit with a work area without knowing it's length! On 2019-10-08 9:13 PM, Lennie Dymoke-Bradshaw wrote: > When I look in the System Exits manual I see a structure passed as a > parameter list which has an offset to the work area, and a length specified > for it. Assuming the length is specified in bytes it must fit in a halfword. > So max would be 65536 bytes. > > I agree it would be sensible for IBM to give an indication of how much there > is. Without that one could be reduced to getting ones own work area 😉. > > Can you dump out the parameter list to see what is passed? Can we have any > indication from IBM of a minimum size? > > Lennie Dymoke-Bradshaw | Security Lead | RSM Partners Ltd ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
