On Wed, 15 Apr 2020 15:43:49 -0400, Phil Smith III wrote: >I have a use case that's reasonable enough that it might be supported, yet odd >enough that I'd be unsurprised if it isn't. > >Suppose we have a function called AX that we call. At times it would be useful >to be able to relink a program that calls AX to add a "shim"-let's call it >AXPRIME-between the program and AX. Yet we don't want to change that program >code, just relink it (or point at a different library and make a dynamic call >to AX). > I'd say put a library contaning the shim AX first in STEPLIB. The shim AX could then LINK the real AX with TASKLIB containing it concatenated first. But I fear that CSV may outwit you.
>Ideally, we could tell the linker "OK, load deck AXPRIME [which has entry >point AX defined]; now include deck AX but rename entry point AX in that deck >to AXMINUS". And the AXPRIME code would call AXMINUS to do what AX usually >does. > >The alternative-hacking AX itself-is of course possible but undesirable, >because we don't want the shim functionality to be there all the time, as it >represents a security hole. The shim is added explicitly when needed, so it's >a "your gun, your foot" deal. > >Anyone know whether this is possible with IEWL or anything else? -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
