FWIW I note that the BPX1MSS documentation (z/OS V2R1.0 UNIX System Services Programming: Assembler Callable Services Reference) says "Both MVS task termination and the mvsprocclp service (BPX1MPC, BPX4MPC) perform the mvsunsigsetup service."
It appears that may not be happening in task termination. Charles -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Charles Mills Sent: Thursday, July 30, 2020 10:00 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: ESTAEX exit WAIT question Thanks @Peter. I wondered about an ATTACH RMTR. I was fishing a bit when I wrote the OP. I understand the problem now: I have a non-authorized batch program. I have complete control over the logic. It runs a UNIX program as a subtask. I have no control over the logic of the UNIX program. Under certain circumstances -- a timeout -- the batch program cancels the UNIX program subtask. (DETACH and ABEND S13E) The batch program then runs another UNIX program as a subtask -- with no issues. This has been working perfectly for years. I want to add logic such that if the batch program user cancels (CANCEL ABEND S222) the batch program it similarly cancels the UNIX program and attaches another. I have an ESTAEX exit that catches the ABEND Sx22 and does the DETACH and ATTACH. The problem I am seeing is that the second UNIX program fails with Reason Code 0D070201 JRAlreadySigSetUp: BPX1MSS found the process already set up for signals. My inference is that the first UNIX program does not finish "cleaning up" in this situation. It does not finish cleaning up when DETACHed by an ESTAEX exit, even though it does clean up properly when DETACHed by the mainline in a timeout situation. (I can't clean up the signal registration myself with BPX1MSD() -- that fails because the running main task does not own the signal registration, the terminated subtask does.) Any thoughts or suggestions? I tried STAE=YES on the DETACH with no apparent effect other than that it changed the subtask ABEND from S13E to S33E. I have not tried using ETXR (or RMTR <g>). Not sure what I would do differently or additionally with an ETXR. ETXR is documented as running on the originating task, so I would have the same problem with BPX1MSD(). ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
