I opened an issue on the project github page. We shall see what we shall see.
CM
On Fri, 1 Aug 2025 11:51:10 -0500, Kirk Wolf wrote:
>I wrote some code 10 years ago that was 31-bit XPLINK C++ calling the IBM json
>parser.
>Looking at it now, I agree: the header for hwtjpars is incorrect - parm
other calls too!)
Is anyone actually using z/OS JSON parse from C/C++? Does anyone from IBM care
that the doc is misleading and the header is wrong? (Serious question -- if so,
drop me a note and I will work with you on fixing the header.)
Charles
On Thu, 31 Jul 2025 17:04:10 -0500, Charles Mill
I am using the recommended SYS!.CSSLIB style linkage. I see the following in
the link map
500 HWTJCSS * CSECT 354 CSSLIB01 HWTJTERM
18 518 HWTJCREN LABEL
0:42 -0500, Charles Mills wrote:
>I am dipping my toe into the z/OS JSON parser (form C++). I am using
>SYS1.SIEAHDRV.H(HWTJIC) as a guide. I make it through the hwtjinit() with a
>zero return code but my next call, to hwtjpars(), gives me a return code 1025
>(Specified JSON string address
I am dipping my toe into the z/OS JSON parser (form C++). I am using
SYS1.SIEAHDRV.H(HWTJIC) as a guide. I make it through the hwtjinit() with a
zero return code but my next call, to hwtjpars(), gives me a return code 1025
(Specified JSON string address is less than or equal to zero).
I thought
On Thu, 17 Jul 2025 11:36:41 -0500, Paul Gilmartin wrote:
>Is this documented for ALLOCATE, or in the frontmatter for
>TSO commands generally. Particular mention is needed
>where TSO behavior differs from the expectation of
>JCL programmers.
It is documented for RACDCERT, the TSO command with
ALLOC may well take whatever you specify last and ignore what came before -- I
don't know. NEW CATLG DELETE is adding to the confusion. Try just NEW CATLG.
Sometimes installations' SMS is set up to put datasets on some "temp" volume
and automatically delete them at end of session. Can you try sp
Oh Joe, Joe, Joe, ...
Specifics, specifics, specifics, ...
What is the exact allocation of the file in question?
CM
On Thu, 17 Jul 2025 11:09:47 -0400, Joseph Reichman
wrote:
>Hi
>
>I have a clist which I allocate an output file used to debug a program under
>TSO TEST
>
>When that clist en
On Fri, 11 Jul 2025 19:27:16 +, Richard Zierdt
wrote:
>Any recommendations of textbooks, papers, etc about data compression for the
>beginner and up in general, and/or Redbooks, SHARE conferences, et.al., about
>data compression with a z/OS slant in particular?
I wrote code to do this:
ht
On Tue, 1 Jul 2025 12:41:04 +, jgmauta...@yahoo.com.ar
wrote:
> Hi!
>Since z/OS V2R5 there exists the possibility of implementing "IPL data
>signing". As I understand it, this gives some assurance that critical IBM load
>modules were not unauthorizedly modified (after the last time they we
On Fri, 20 Jun 2025 16:47:29 +, Farley, Peter
wrote:
>I would THINK that if an object on a heap is deleted, then a second delete
>request for that same object SHOULD return an error (invalid object address at
>least), which of course the programmer should be checking . . . but regardless
On Thu, 19 Jun 2025 11:46:18 -0700, Leonard D Woren
wrote:
>Charles Mills wrote on 6/18/2025 1:19 PM:
>> Well, it looks like the worst possible outcome. The problem simply went away.
>
>"Problems that go away by themselves come back by themselves." --
>very o
On Wed, 18 Jun 2025 16:53:38 -0500, Michael Oujesky
wrote:
>So how does the IEF032I message look for each test?
IEF032I STEP/STEP1 /STOP 2025169.1525
CPU: 0 HR 00 MIN 00.31 SECSRB: 0 HR 00 MIN 00.00 SEC
VIRT:
On Tue, 17 Jun 2025 10:45:50 -0500, Charles Mills wrote:
>Thanks all! Many GREAT suggestions. I am working on this issue and other
>projects at the same time so it may take a couple of days for me to fully
>pursue, but I WILL get back to you all.
Well, it looks like the worst possibl
On Tue, 17 Jun 2025 10:23:42 -0500, Jon Perryman wrote:
>It looks like you had a S0C4 during termination most likely from a storage
>overlay. My observations from the very limited information provided:
Thanks all! Many GREAT suggestions. I am working on this issue and other
projects at the sam
On Mon, 16 Jun 2025 17:51:16 -0500, Michael Oujesky
wrote:
>What does IEF032I say?
IEF032I STEP/STEP1 /STOP 2025167.1741
CPU: 0 HR 00 MIN 05.42 SECSRB: 0 HR 00 MIN 00.16 SEC
VIRT: 7872K SYS: 768K EXT
I have a C++ program under development that has started ABENDing *after the
last line* of the program. The main() routine ends with
printf("Last line of main()\n");
return M::ProgramReturnCode;
and I am seeing that printf() message, so the problem is not something that the
program is d
On Thu, 12 Jun 2025 11:26:04 -0500, Jon Perryman wrote:
>On Thu, 12 Jun 2025 11:53:36 +, Peter Relson wrote:
>
>>>I've never seen a valid use case for S-CONS.
>>It is how IBM creates an internal-use macro for a new op-code before the
>>assembler support is available.
>
>I am well aware of
Do you need to copy just the certificate, or the certificate and its private
key?
The former would be the case for CA root and intermediate certificates; the
latter would be the case for server certificates that your system originally
generated.
For the "and key" case, I think it may be impos
Thanks @Colin and @Selva.
That was it. I kind of knew this. I have been working a lot on certificate
reporting and I kind of compartmentalized this restriction as "if you are
reporting on certificates you will have this access issue."
Of course it affects server access too.
I did make the mist
I am trying to configure AT-TLS to secure a Web server connection. I get no
errors on the PAGENT REFRESH.
When the browser tries to connect the first error I get is EZD1287I TTLS Error
RC: 428 Initial Handshake
EZD1287I 428 is documented as Connection Init The private key cannot be
obtained
+1
Unless you have a VERY slow or busy machine, does it really matter? The point
of a timeout usually is to keep a transaction from taking "forever" and if both
ECBs are posted, then you achieved that goal.
If it does matter, why couldn't either of the POST routines check the *other*
ECB and i
On Wed, 16 Apr 2025 12:17:11 -0500, Paul Gilmartin wrote:
>the chassis gets hot and the fan turns on. Long ago I learned here that IBM
>processors
>never reduce power. Is that still true?
I have no idea but I would throw out there that most PCs are idle much of the
time; most z processors a
If you Google you will see Reddit and Quora
threads going back to about 2010 covering just this topic. I was going to post
a link or two but no one article is perfect. They are all oriented (of course!)
toward the Intel 486/Pentium/etc. family but chips is chips, more or less. The
same physics
I believe you have two choices. You can put it on the keyring configured for
the application (NOT "the owner" -- userids can own multiple keyrings, but
applications in my experience are only configured for one).
Or you can install it owned by CERTAUTH. I believe System SSL (who does the
real wo
What he said!
Also: this is not difficult. IBM should make it clear what root certificate
they require. Make sure you get it right -- not just "a DigiCert root" --
DigiCert has about ten different roots, so get the specific name. The names are
similar -- often differing only by one word or "G3"
@JC, thank you.
May I respectfully suggest that the biggest lack is not language features but
documentation. How would anyone outside of IBM be expected to know what you say
below?
The legacy C compiler has a User's Guide and a Programming Guide. Enterprise
PL/I has a Programming Guide. Enterp
: 0K
VIRT- ALLOC: 13M SHRD: 0M
Charles
On Sun, 16 Mar 2025 15:48:18 -0500, Charles Mills wrote:
>Trying to hold down the noise by doing one reply for all of your great
>suggestions.
>
>@Peter, no, did not know abo
Trying to hold down the noise by doing one reply for all of your great
suggestions.
@Peter, no, did not know about .pch. The documentation is sorely lacking. Would
like to give that a try but no idea how.
> Did you run both of those tests using the same REGION value on the same LPAR?
Same exact
I am trying to get started with the new, "open," Clang-based XLC compiler. I am
stunned at how noticeably slower it is than the legacy C compiler. I wasn't
looking to benchmark -- the slow compile times just jumped out at me.
Is this to be expected? I wish I had numbers for exactly the same sour
On Thu, 13 Mar 2025 09:45:02 -0500, Linda Chui wrote:
>Assuming your -mzos-sys-include comes from
>https://www.ibm.com/docs/en/open-xl-c-cpp-zos/2.1?topic=compiler-jcl-example,
>you can see the preamble states it is for C (non-XPLINK).
>
>There is a USS (or shell) example given in the same d
On Wed, 12 Mar 2025 19:38:38 -0500, Linda Chui wrote:
>The errors you saw were likely from using the wrong header set.
Linda, thanks for taking the time to help.
I believe I am doing things exactly as you document. The documentation says
-mzos-sys-include="//'.SCEEH.+'"
And my coding is
-mz
On Wed, 12 Mar 2025 22:51:41 +, Farley, Peter
wrote:
>I think only at the V1.1 (or is it V1.2?) level did the “new” Open XL compiler
>(the CLANG version) and libraries get support for JCL compilation. The
>initial version only supported shell invocation.
>
>Which version did you install?
On Tue, 11 Mar 2025 19:56:02 -0500, Paul Gilmartin wrote:
>To add a little more TCP/IP to the mix, can both users alike access z/OS UNIX
>files
>via ssh/sftp?
You know, that's a real good thought. Unfortunately, I have zero experience
with ssh and sftp and so that would be a whole new can of
Is it just me or does the "new" IBM Open XL C/C++ compiler seem
under-documented?
(This is in the department of old dogs trying to learn new tricks.)
I am very, very familiar with the "legacy" IBM z/OS XL C/C++ compiler. (Is it
just me or do these names seem unnecessarily confusing?)
Where is
On Wed, 12 Mar 2025 13:59:38 -0500, Paul Gilmartin wrote:
>With which command line interfaces are you conversant?
Not sure "the public" cares but FWIW almost none. Trying to think of what I do
from a command line. Use Windows GUI all the time but almost never the command
line. Have a couple of
On Wed, 12 Mar 2025 17:38:22 +, Len Rugen wrote:
>From my wayback machine. Ftp can have problems with firewall ruled. There
>are active and passive modes. Look for net blocks.
Well aware. Would not be userid-specific, unless I am very confused.
Charles
-
Yeah, you're right. Change is good. I have had associates who used ssh
exclusively or almost exclusively, and it seemed to work for them. (The problem
of remote work -- didn't get to look over their shoulders.)
You can teach an old dog new tricks, but you have to overcome the dog's
resistance
On Wed, 12 Mar 2025 00:00:18 +, Farley, Peter
wrote:
>SWAG: No OMVS section in the new userid definition while your userid has one?
Good thought! Thanks. New user has an OMVS segment and can access z/OS UNIX
files via 3.17 and TSO OMVS.
Charles
---
I have a Dallas system where I pretend to be a sysprog. I just added an
additional userid. FTP to and from z/OS UNIX files works for my userid but not
for the added userid. I have checked and all of the WS_FTP session parameters
are the same. I looked at the console and realized I was getting
E
Did IKJTCB even exist before there was TSO?
Charles
On Fri, 21 Feb 2025 18:13:05 +, Seymour J Metz wrote:
>That text may have made sense for OS/360 R1. It certainly didn't make sense in
>1968.
--
For IBM-MAIN subscribe /
> Due to the cable being too long, it was taking x + y microseconds.
Must have been nanoseconds, right? Electric signals travel at approximately
150,000 miles per second. That's somewhere around 800 or 900 feet per
microsecond. That would be a long cable.
https://youtu.be/9eyFDBPk4Yw
Charle
I am surprised that would fail but I don't know SVC 99 well enough to say "no,
that's wrong."
Seeing as the job is set up with the dataset already "hard coded" in Step 2 --
why not allocate it with JCL in Step 1?
If you do that would the SVC 99 then succeed (so you would not have to change
you
Are some ABENDs stranger than others?
CM
On Sun, 16 Feb 2025 12:42:34 -0500, Joseph Reichman
wrote:
>Hi
>Sorry about the previous post
>
>I fat finger it and didn’t now how to recall or delete
>
>Well here is my question
>
>
>I am getting some strange abends fro LOCATE
>
>Specifically ab
Note that (as @Wayne posted) it is not the address of an *exit* per se (unlike
most of the "exit" list) -- it is the address of the buffer in which RDJFCB
will return the JFCB.
I don't understand the error but perhaps there is not enough information below.
"No valid or valid"?
Charles
On Fri,
On Fri, 31 Jan 2025 09:17:27 -0500, Matt Hogstrom wrote:
>Well done Dave. Succession planning is under rated and hard to do. Thanks
>for thinking forward and ignore the FUD.
The other thing, speaking as someone who sold a smallish enterprise software
company to a rollup:
If you are a user o
Let me reply here and close the loop on this.
On Tue, 28 Jan 2025 23:11:20 -0800, Retired Mainframer
wrote:
>Can you use a #pragma to change the errors produced by #error into warnings?
That's a great idea! I may try that.
>Does it make a difference if you remove the = from the DEF statement
> The client sends some cipher data and then immediately gets a 5003 failure
> because the response comes back as clear text rather than encrypted.
Sounds like perhaps a mis-match between implicit and explicit FTP? Is the
server expecting 'AUTH TLS' before going to encrypted, and not getting it?
@Andrew and @Colin, thank you.
> the __LIBREL__ and __TARGET_LIB__ macros
Agreed, that's a better approach. After I wrote my OP I recalled I had used the
latter macro a while ago to solve a similar problem. It's better than a unique
macro because (a.) it is only one thing to change in the optio
Hand-editing is the only way I have ever configured AT-TLS, so
a. It's not hard. Anyone with any kind of coding background should find it a
piece of cake. Consult the documentation. The parameters are not entirely
intuitive nor consistent.
b. No idea whether the changes would be preserved if yo
IBM "Classic" XLC C++ V2R5
The fundamental problem I am trying to solve is creating bi-modal source code
that will support UNIX dates beyond 2038; or alternatively will build under
z/OS V2R2.
I have the usual sort of #if/#else/#endif structure based on a macro named
Y2038_LEV2R3. I want to set
I think the problem is that the option is confusingly named. The question is
"should IND$FILE translate the data from ASCII to EBCDIC? Yes or No." The word
"binary" implies data that might well contain all 256 possible 8-bit values.
That might not be the case at all. Perhaps it is all valid ASCI
The OP asked about uploads. So it's not about adding CR-LF. It's an IND$FILE
option passed from the PC to have IND$FILE break logical records when it sees a
CR-LF. (Really. I know this for a fact.)
Yes, in the wonderful PC world of "hey, it works most of the time" yes I can
picture a value to t
Let me start by saying nobody loves the mainframe more than I do. The
mainframe, and the mainframe software business, has been very, very good to me.
That said, no matter how many times we tell smirking tales here of someone's
get-off-the-mainframe project that failed or took three times as long
Solved it. Made myself a member of OMVSGRP.
Sorry for the disturbance to the force.
CM
On Fri, 10 Jan 2025 12:30:19 -0600, Charles Mills wrote:
>I am more of a UNIX ignoramus than I should be. What do I have to do to give
>myself permission to write into /etc ?
>
>Here is wha
I am more of a UNIX ignoramus than I should be. What do I have to do to give
myself permission to write into /etc ?
Here is what /etc looks like:
Filename Type Permission Audit Ext Fmat OwnerGroupLinks
---
etc Dir
Or another solution -- not saying better or worse, just another solution --
would be an XSECT or similar opcode so you could say SAVEAREA XSECT and it
would effectively be a CSECT, DSECT or RSECT (or COMMON???) statement as
appropriate.
Charles
-Original Message-
From: IBM Mainframe Discu
On Tue, 31 Dec 2024 12:10:36 -0600, Paul Gilmartin wrote:
>>- Does C do mainframe record I/O? C doesn't do any I/O at all, but the
>>IBM-supplied C library has excellent support for records, VSAM, pipes, etc.,
>>etc. You can read all about it in the Programming Guide.
>>
>Can files of those for
On Tue, 31 Dec 2024 19:01:24 +1100, Clement Clarke wrote:
>Charles Mills kindly suggested that C++ was the answer. However, I think
You cut me off in mid-suggestion! I was not suggesting that C++ was the
answer; I was suggesting that C++ std::string is the answer.
Let me re-phrase
Agreed. Protected storage a much better approach than encryption.
The OP mentioned encryption and I just went with it.
CM
On Mon, 9 Dec 2024 19:23:21 +0200, Binyamin Dissen
wrote:
>Yes, the pointers are documented.
>
>Would be simpler to use protected storage than obfuscation.
-
First off, if the hypothetical malicious program that you are worried about is
running authorized then all bets are off. APF is the skeleton key to all of the
locks in the kingdom. Reading random name/token pairs is the least of the
problems.
> How difficult is it to "guess" the name?
If the n
ity risk if
>they could.
>
>OK � I'll take a shot at answering my own question, based on a comment by
>Charles Mills: "random" address spaces. If unauthorized XM POSTs were allowed
>without restriction, then one AS could "POST" to any other AS, possibly
&
I think it would be an integrity violation if an unauthorized program could do
POSTs into random* address spaces.*Random in the familiar sense; not in the
mathematical sense.CharlesSent from a mobile; please excuse the brevity.
Original message From: Richard Zierdt
Date: 12/7/2
I was going to post a much longer reply but most of the points have already
been covered.
Do however note that IEBCOPY no longer requires APF authorization. That has
been true for "a while" -- perhaps z/OS 2.1 or even earlier.
Charles
On Sat, 23 Nov 2024 17:39:32 +1100, Clement Clarke wrote:
No
"Don't release" ≠ Security
Charles
On Mon, 18 Nov 2024 14:53:12 -0600, Steve Beaver wrote:
>I have the code to turn on and off the JSCBAUTH via an SVC but I don’t release
>that code
--
For IBM-MAIN subscribe / si
Or if you prefer macros to control block chasing ...
https://www.ibm.com/docs/en/zos/3.1.0?topic=wto-testauth-test-authorization-caller
Either way it's a lot more manager-friendly than S047.
Charles
On Mon, 18 Nov 2024 15:19:02 -0500, Steve Thompson wrote:
>I don't know if it will work for
Think of APF authorization as being as restrictive as the weakest link. (And
that's a good thing.)
- Every library in the STEPLIB concatenation authorized except one? Not
authorized.
- Called by an unauthorized program? Not authorized.
- Called a bunch of programs, one of which was unauthorized?
It's like the job postings where they want three to five years of experience
with some brand-new technology.
CM
On Mon, 18 Nov 2024 11:10:38 -0500, Phil Smith III wrote:
>I keep hearing an ad for IBM consulting that says "We have 65,000 consultants
>with GenAI experience". Is a quarter of IBM
C++ is an extension to C. It provides managed strings via a class named,
appropriately enough, string. I would assume that the various string methods
use "defined length" technology analogous to memcpy(). string is largely immune
to buffer overruns.
Even if you don't like object-oriented progra
>Since our host servers are not mainframes, can we let customers use
>AT-TLS, and what do we need to do on our side?"
Yes, and probably nothing. It's just TLS.
>asked to provide a job to customers to use AT-TLS on their mainframes.
It's not a "JCL problem" on the client end. It is a Policy Age
Does this help?
https://www.ibm.com/docs/en/zos/3.1.0?topic=guide-xlc-compiler-invocation-using-customizable-configuration-file
CM
On Mon, 11 Nov 2024 23:18:36 +, Farley, Peter
wrote:
>In a z/OS Unix shell session, I find this:
>
>$ man xlc
> xlc - Compiler invocation using a customiza
Well, @Captain, I stand corrected.
(That was me in error.)
Charles
On Wed, 6 Nov 2024 13:20:58 -0800, Tom Ross wrote:
>>On Sun, 3 Nov 2024 14:59:20 -0600, Paul Gilmartin wr=
>>ote:
>>
>>>It would be a disservice to customers to retire 24-bit support berore
>>>all IBM programming interfaces s
On Sun, 3 Nov 2024 14:59:20 -0600, Paul Gilmartin wrote:
>It would be a disservice to customers to retire 24-bit support berore
>all IBM programming interfaces support AMODE 31.
Do *any* of the modern compilers (C, COBOL, PL/I) "support 24-bit addressing"?
What would that mean, exactly? Their l
It's what Dr. Chung-Lung Shum told me. (He was the architect of the Z chips
through 2022.)
The context I asked him about was strings from ~100 to 32K bytes, and where it
was not a waste of time to have the target data in cache after the move.
I think I benchmarked, but don't recall for sure. I
@Kirk: +1
@Shmuel: you know that an MVC loop is dramatically faster than MVCL?
Surprising but true.
CM
On Wed, 30 Oct 2024 22:40:52 +, Seymour J Metz wrote:
>I'm leaning towards SRST/MVCL.
>
>--
>Shmuel (Seymour J.) Metz
>http://mason.gmu.edu/~smetz3
>עַם יִשְׂרָאֵל חַי
>נֵ֣צַח יִשְׂרָאֵ֔
> As to "R form" of freemain (or getmain) ... it should probably never be used
> any longer.
Why? (Serious question.)
Charles
On Sat, 19 Oct 2024 12:20:44 +, Peter Relson wrote:
>In the alternate reality of unlimited resources and time, those sort of
>expansion might be done.
>
>The only
I admit I have not read every post of this thread and I admit I may be being
something of a curmudgeon, but how does printing the raw tracks of an allegedly
encrypted dataset prove that it is encrypted?
Would the people who are going to look at this printout be sufficiently astute
to definitive
It's not! Basically *nothing* about IND$FILE is documented.
IIRC that the 3270 datastream manual, which is out of print, describes the
basics of 3270 structured fields. The only way to know the details of how
IND$FILE uses them is by hacking.
CM
On Wed, 25 Sep 2024 17:12:29 -0400, David Spiege
That's the first I have ever seen that document. It appears to be extracted
from a longer perhaps internal-use-only IBM document. Note that it starts on
page 11.
(C) Copyright International Business Machines Corporation 1995 -- which is
consistent with my recollection as to generally when the S
Really? Is there serious interest in a modern IND$FILE? UNIX file support? What
else?
I have the skills to do that. Is there really serious interest?
Charles
On Wed, 25 Sep 2024 19:18:51 +, roscoe5 wrote:
>An enhanced IND$FILE, how many of us would love that‽ That might even swing my
>ch
Yeah, they solve very different problems.
FTP is cross-system: it supports to and from nearly every current OS in the
world. IND$FILE is very convenient in some situations, but it is strictly 3270
client to/from IBM mainframes.
Charles
On Wed, 25 Sep 2024 15:29:17 -0400, Phil Smith III wrote:
That was true once upon a time but has not been true since about 1995. IND$FILE
uses a 3270 sub-protocol called "structured fields" and can transfer up to 32K
of binary data in a block.
It's still single-task and half-duplex, and layered into TSO, all of which
makes it a lot slower than FTP, bu
I don't but perhaps there is a Redbook or similar.
AT-TLS is one of the coolest d@mn pieces of software ever written, IMHO. It
sits at 50,000 feet and can "TLS-ify" any TCP program. Let's say someone at
your shop wrote some utility for your shop years ago that does some chore --
sends the widge
I find it vanishingly unlikely that FTP would go away or have its functionality
significantly reduced.
As of z/OS V2R5 (I think that's right) FTP server no longer supports "internal"
TLS. If you want TLS you will have to use AT-TLS to impose TLS, well,
"transparently" (which is not a terribly b
RUCSA is such a bad idea that IBM charges you extra for the feature just to try
to discourage you from using it.
I am not going to mention names out of school but I do know that the powers
that be resisted even adding the feature. (A few customers demanded it, and you
know who won THAT argument
Staying out of trouble with X-memory post is a tough assignment. Sad voice of
experience here: I am looking at a six-year-ago reprimand from IBM support for
making a mess in an LPAR with the x-memory post code in a vendor product I
wrote.
Use IEAMSXMP! (Unless support for z/OS < V2R2 is necessa
You know what? I've decided to take @Rob's advice and do individual FREEMAINs
one at a time. The code is going to run in a variety of shared ISPF and
Websphere environments. No matter what subpool I choose, there is just no way
of knowing that another programmer hasn't chosen to use the same sub
Thanks, @Rob.
Following your advice more or less I changed to subpool 35 and it is working
like a champ.
I stuck with my original design of doing a subpool FREEMAIN after every 10
calls. Old "efficiency" habits die hard. But I do hear you. If I had done
"regular" FREEMAINs instead of subpool F
> the invocation asked to free location 0 for length of x'0100' and that
> properly got 378-1C.
I was following this guidance in the documentation:
If you specify R,LV=(0) you cannot specify the SP parameter. You must specify
the subpool in register 0; the high-order byte must contain the s
Starting a new thread after @Peter dryly points out that freeing all of LE's
storage in the middle of a run is "unlikely to be a good idea."
How DO I choose a subpool? Here's the bigger picture. I am using
https://www.ibm.com/docs/en/zos/3.1.0?topic=descriptions-r-admin-irrseq00-racf-administrat
rmat for R (SVC
> x'A').
>
>FREEMAIN R,A=(1),LV=(0) should work better.
>
>But I would recommend FREEMAIN RU,SP=1
>
>Jim Mulder
>
>-Original Message-
>From: IBM Mainframe Discussion List On Behalf Of
>Charles Mills
>Sent: Friday, Au
Thanks @Jim.
All I can say is duh! You stare at your own code ...
The register form parameters are because it is intended to be a general purpose
FREEMAIN callable from C.
Charles
On Sat, 31 Aug 2024 00:21:15 +, Jim Mulder wrote:
> You did not specify a positional parameter. It looks l
Okay, true confessions time: in more years of this than I care to admit I have
never done a subpool FREEMAIN.
I am trying to free subpool 1.
R0 = x'0100'
R1 = 0
I issue FREEMAIN A=(1),LV=(0)
I get ABEND S378 001C A user has requested that storage at virtual address 0 be
freed. This can ha
I did one in C, including a bunch of "automated" test code.
There are at least four common schemes:
- RACF, that distinguishes between * and **
- dB2. I have forgotten how it works, but it is its own variant IIRC
- Windows/DOS, which allows, or at least logically processes, * only at the end
of a
What does the LLVM project "Clang" compiler -- which is the "new" or "current"
IBM C/C++ compiler for z/OS -- use for libraries? Is it open source?
Charles
On Mon, 8 Jul 2024 17:08:15 -0500, Charles Mills wrote:
>I wasn't sure what you meant. I think
I wasn't sure what you meant. I think what you are asking is:
Is there a fairly generic C library for MVS other than LE that provides a C API
to common MVS services?
If so, I doubt it. But possibly ...
There was an MVS C compiler in the pre-LE days. It was a port of one of the
common C compile
7/1/2024 download of z/OS?
Charles
On Fri, 28 Jun 2024 04:10:13 +, Timothy Sipples wrote:
>Charles Mills wrote:
>>Am I reading this correctly that the "they would have to download
>>it and some shops won't do that" objection to the use of Python for
>>thi
Am I reading this correctly that the "they would have to download it and some
shops won't do that" objection to the use of Python for third-party software
goes away, at least for customers with z/OS systems ordered after July 1?
Going forward, most shops will have Python available by default (or
>Then again, looking at the manual, specifying "MARGINS(2,72)" in your pre '
Ta-da! 99% right. Turns out the default for the third sub-operand is 1, so you
actually need MARGINS(2,72,0);
Problem solved! Thank you!
Charles
On Thu, 13 Jun 2024 21:12:48 +, Robert Prins
wrote:
>No simple wa
Okay, I tried this. Does not seem to work. What am I doing wrong?
1. I override the SYSIN in the PROC with -- and I checked the job output, the
override worked --
//SYSINDD *
/*
// DD D
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