topic Re: chatr Fails to requadrant executable in Operating System - Linux

chatr Fails to requadrant executable

Alzhy — Fri, 10 Nov 2006 15:33:41 GMT

chatr +q3p enable /usr/local/bin/rlog
chatr(error): cannot set/reset text rewrite flag for program - /usr/local/bin/rlog

But on a another machine with exact same OS and patches, etc... it works...

Any clues?

I am sure /usr/local/bin/rlog is not in use at the time I am performing chatr.

Re: chatr Fails to requadrant executable

James R. Ferguson — Fri, 10 Nov 2006 15:46:26 GMT

Hi Nelson:

Technical Knowledge Base document #8606465533
seems to fit your description, if this is for HP-UX 11.11 with an "old" binary.

What happens if you copy the failing binary file to one of your other "equivalent" servers?

Regards!

...JRF...

Re: chatr Fails to requadrant executable

Alzhy — Fri, 10 Nov 2006 15:50:52 GMT

It works...

Same executable copied over and chatr enabled.

Can I simply copy back that executable back?

Re: chatr Fails to requadrant executable

James R. Ferguson — Fri, 10 Nov 2006 16:06:24 GMT

Hi (again) Nelson:

If it works on an "equivalent" server, one would guess 'chatr' is different. Do :

# what `whence chatr`

...and compare versions.

You could certainly try copied a modified binary back to the server on which you want to test it to see if it works. Of course, you might want to keep an unmodified version too.

Regards!

...JRF...

Re: chatr Fails to requadrant executable

Bill Hassell — Fri, 10 Nov 2006 18:28:34 GMT

Check to see that the failing binary is created with EXEC_MAGIC capability before using chatr.

cc -Ae -Wl,-N -o myprog myprog.c

Note there is no space in "_Wl,-N"

Re: chatr Fails to requadrant executable

Dennis Handly — Mon, 24 Oct 2011 01:34:38 GMT

Is rlog writable by the current user?
(I guess that gives: chatr(error): cannot open file for writing .../rlog) Bill Hassell

>Bill: Check to see that the failing binary is created with EXEC_MAGIC capability before using chatr.

This (-N) is only needed for IPF.

>Note there is no space in "-Wl,-N"

There is no need to use -Wl, since -N is a full fledged driver option.

And the ld man page says that -N is needed for -Wl,+as,mpas.

Re: chatr Fails to requadrant executable

Bill Hassell — Fri, 10 Nov 2006 23:08:36 GMT

I should clarify - for 11.23, all that is needed for maximum data space availability is to use the MPAS executable model:

cc -Ae -Wl,+as,mpas -o myprog myprog.c

In one step, the 32bit program can now access up to 3800 megs.