You're welcome.
I simply entered "REXX SYSCALLS OPEN" into Google Search, and this was
the first hit:
https://www.ibm.com/docs/en/zos/2.1.0?topic=commands-open-write-close-file
this is where I found the sample code.
I didn't know or use SYSCALLS before.
Kind regards
Bernd
Am 11.09.2022 um 18:29 schrieb Charles Mills:
Thank you all and especially @Bernd Oppolzer. They key is that I was not
checking the open for success correctly. I was formatting the second file name
incorrectly and as a result the open was failing but my code did not make me
aware of that. Bad open of course yields a bad fd which yields a -21. It is all
new code and I had not tested open failures specifically.
Not sure where you saw the example that you cited. The IBM doc that I am
looking at has the following for an example (in its entirety):
"open /u/linda/my.exec" o_rdwr+o_trunc+o_creat 700
which is of course useless with regard to how one checks for errors. IBM could
do better, especially if open is atypical in how it reports errors.
(https://www.ibm.com/docs/en/zos/2.5.0?topic=descriptions-open)
Thanks again,
Charles
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