The shell creates the environment variables. ________________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Jon Perryman <jperr...@pacbell.net> Sent: Wednesday, October 4, 2023 10:34 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Assembler access to USS functions
On Wed, 4 Oct 2023 13:27:28 -0500, Paul Gilmartin <paulgboul...@aol.com> wrote: >>On Wed, 4 Oct 2023 16:06:38 +0000, Farley, Peter wrote: >>Perform setenv(). Adds, changes, or deletes an environment variable in the >>environment list. >No. Single Unix says: ><https://pubs.opengroup.org/onlinepubs/9699919799/functions/putenv.html#tag_16_466_03> > ..., the string pointed to by string shall become part of the environment, > so altering the string shall change the environment. Maybe we can be more helpful by ignoring the obvious and discussing things that Dave Cole might get to the answers he is looking for. Remember that Dave is asking about XDC extracting environment variables using assembler. My interpretation: 1. He wants access to environment variables from various processes and address spaces at the same time (not specific to the breakpoint). 2. He needs to deal with IBM C, SAS/C, and Metal C. It's been many years but I think CICS supports environment variables. 3. He can't depend upon loading DLL support. Does SRB, SVC, PC routines and ??? have direct knowledge of environment variables. I think that once Dave finds the first environment variable, it will be an array because it needs to be compatible with user programs that may search it. I'm not sure how z/OS UNIX gets to that variable. Maybe a look at os.environ would lead to the answer. Dubbing can occur in all address spaces. I don't know if dubbing creates environment variables. Maybe the USS news group has a mapping of CB's created by dubbing. Maybe they know the CB that points to environment variables. Shell design has shell variables which include environment variables. This might need to be considered. Not sure if they are included in the standard calls. ---------------------------------------------------------------------- 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
