Re: Can FRR prevent ESTAE from seeing registers?

2007-05-13 Thread Jeffrey D. Smith
> -Original Message- > From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On > Behalf Of Peter Relson > Sent: Sunday, May 13, 2007 7:51 AM > To: IBM-MAIN@BAMA.UA.EDU > Subject: Re: Can FRR prevent ESTAE from seeing registers? > > Given everything t

Re: Can FRR prevent ESTAE from seeing registers?

2007-05-13 Thread Peter Relson
Given everything that has been posted, the conclusion is that your best chance for keeping things "not visible" is being disabled. You will then not be interrupted and cannot be canceled. The local lock would prevent cancels, but not the interrupt cases that Jim Mulder mentioned. But even with tha

Re: Can FRR prevent ESTAE from seeing registers?

2007-05-11 Thread Jim Mulder
IBM Mainframe Discussion List wrote on 05/11/2007 12:38:08 PM: > When I have sensitive information in the general registers, I am not > vulnerable to an access exception (all client data has already been > copied to my protected storage areas). > > When I am vulnerable to an access exception fo

Re: Can FRR prevent ESTAE from seeing registers?

2007-05-11 Thread Jeffrey D. Smith
> -Original Message- > From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On > Behalf Of Peter Relson > Sent: Friday, May 11, 2007 5:28 AM > To: IBM-MAIN@BAMA.UA.EDU > Subject: Re: Can FRR prevent ESTAE from seeing registers? > > Only by retrying. >

Re: Can FRR prevent ESTAE from seeing registers?

2007-05-11 Thread Peter Relson
Only by retrying. If you cannot retry, it is your responsibility not to put things into registers if they are sensitive in nature (not that that is necessarily particularly feasible). Peter Relson z/OS Core Technology Design --

Re: Can FRR prevent ESTAE from seeing registers?

2007-05-10 Thread Craddock, Chris
> Sigh... I am writing a service routine called by clients that must not > see the error-time registers. The SDWA is completely reallocated for > the transition between FRR and ESTAE processing, with only the SDWACOMU > copied to the new SDWA from the old SDWA. However, the client won't care > abou

Re: Can FRR prevent ESTAE from seeing registers?

2007-05-10 Thread Jeffrey D. Smith
> -Original Message- > From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On > Behalf Of Craddock, Chris > Sent: Thursday, May 10, 2007 11:11 AM > To: IBM-MAIN@BAMA.UA.EDU > Subject: Re: Can FRR prevent ESTAE from seeing registers? > > > I have a

Re: Can FRR prevent ESTAE from seeing registers?

2007-05-10 Thread Craddock, Chris
> I have an FRR that erases sensitive material from storage areas before it > percolates an ABEND. I also want to erase the registers so that any ESTAE > that may get subsequent control cannot see the error-time registers. I > want the ESTAE to see zeroes in its SDWA. > > The error-time registers

Can FRR prevent ESTAE from seeing registers?

2007-05-10 Thread Jeffrey D. Smith
Greetings, I have an FRR that erases sensitive material from storage areas before it percolates an ABEND. I also want to erase the registers so that any ESTAE that may get subsequent control cannot see the error-time registers. I want the ESTAE to see zeroes in its SDWA. The error-time registers