On Tue, Feb 19, 2019 at 9:20 AM Charles Mills <charl...@mcn.org> wrote:
> I've got a requirement to determine whether a DD is allocated DUMMY. I know > how to find the TIOT, get the JFCB with SWAREQ, check for 'NULLFILE' and > loop through all of the JFCB chain. Is there any easier way? That's a lot > of > complexity for a simple question! > > Why? I'm trying to avoid an S013-64 on a BPAM file if the user does not > supply a DSN to a PROC. I'm defaulting the DSN to NULLFILE. I'd like to be > able to determine that from my program. > > The program is in IBM C but I can readily call out to assembler. The OPEN > for the BPAM DCB is in assembler, not using the C library. > RDJFCB will also return NULLFILE for a DD DUMMY. Unfortunately, it also returns that for a UNIX PATH= file. https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.2.0/com.ibm.zos.v2r2.idas300/rdjfcb.htm > > Thanks! > > Charles > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > -- I just burned 2000 calories! That's the last time I'll nap with brownies in the oven. Maranatha! <>< John McKown ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
