> -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of Paul Gilmartin > Sent: Tuesday, July 19, 2011 12:55 PM > To: [email protected] > Subject: Re: Re-entrant module stores into itself with no 0C4 > > On Tue, 19 Jul 2011 12:50:20 -0700, Skip Robinson wrote: > > >RENT is honored--i.e. failed if violated--only if the load library is APF > >authorized. > > > From: > > z/OS V1R12.0 MVS Initialization and Tuning Reference > > > http://publib.boulder.ibm.com/infocenter/zos/v1r12/index.jsp?topic=/com.i > bm.zos.r12.ieae200/progref.htm > > Using the REFRPROT statement > > z/OS V1R12.0 MVS Initialization and Tuning Reference > SA22-7592-21 > > Use the REFRPROT statement type to specify that REFR programs are > protected from modification by placing them in key 0, non-fetch protected > storage, and page protecting the full pages. For more information on > protection of REFR programs, see z/OS MVS Program Management: User's > Guide and Reference. > > |The handling that CONTENTS SUPERVISION provided for |REFR modules > from APF-authorized libraries can be extended to non-APF |libraries if you > set this value to REFRPROT. In other words, when |REFRPROT is in effect with > MVS for APF libraries, they can be extended |to non-APF libraries as well. > > Naturally, since it's new some z/OS programmers will think it's no good, > or too much like UNIX or Windows or such.
Actually, it not that I think it is no good, I think it's a long time coming. The problem is that I also know of at least one program (central to our batch processing) that exploits this "feature" :) So although I think it's "better" that reentrant marked modules actually be reentrant and might have been inclined to enforce that had I had a say in the mythical man month days, I don't get to just turn this on and say sorry to my programmers and management. Dave Gibney Information Technology Services Washington State University > > -- gil > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: GET IBM-MAIN INFO > Search the archives at http://bama.ua.edu/archives/ibm-main.html ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
