And what if a non-Unix application uses a serrvice that causes dubbing? ________________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Paul Gilmartin <0000042bfe9c879d-dmarc-requ...@listserv.ua.edu> Sent: Thursday, October 5, 2023 9:05 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Assembler access to USS functions
On Thu, 5 Oct 2023 11:07:03 +0000, Seymour J Metz <sme...@gmu.edu> wrote: >Where do you think process initialization gets the variable names and values? > I believe: o If the process is initialized by init (often PID 0), init creates the environ array. o If the process is initialized by fork() the environ array is copied from the parent. o If one of the exec family of functions replaces the current process image, the environ array is copied from the envp[] argument. None of these require a shell. ________________________________________ From: Jon Perryman Sent: Wednesday, October 4, 2023 11:09 PM On Thu, 5 Oct 2023 02:37:57 +0000, Seymour J Metz wrote: >The shell creates the environment variables. No. The environment variable array is created by process initialization. The shell and programs can modify the array. I believe sub-shells in the same process use the same array. -- gil ---------------------------------------------------------------------- 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
