Solaris Express Install Workarond

Solaris Express Pains

We install all Sun unbundled software and many ISV applications like Oracle on each build of
Solaris and over the last 12 months we had 10 cases where the install failed directly or indirectly
becuase of changes to the output from uname.  Hard to beleive

10 times we have had to put work around in place, never hard, but time
consuming and not adding a lot of value to the customer ( and boring )

So I am very very happy to see Angelo Rajadurai and Jon Hasalam
have between them come up with a d script to change the uname output
on the fly. Install your software and then change it back :)

Over a number pints in a famous old Dublin Pub ( that doesn't really narrow the search
a lot )  I reminded Bryan that dtrace isn't just for Performance it can help solve
so many QA problems too. dtrace is for everyone not just performance people

 Angelo and Jon wrote it !



#!/usr/sbin/dtrace -Cs
#include<sys/systeminfo.h>

#pragma D option destructive

syscall::uname:entry
/ppid == $1/
{
self->addr = arg0;
}

syscall::uname:return
/ppid == $1/
{
copyoutstr("SunOS", self->addr, 257);
copyoutstr("PowerPC", self->addr+257, 257);
copyoutstr("5.10", self->addr+(257*2), 257);
copyoutstr("Generic", self->addr+(257*3), 257);
copyoutstr("PPC", self->addr+(257*4), 257);
}
syscall::systeminfo:entry
/arg0==SI_ARCHITECTURE/
{
self->arch = arg1;
}

syscall::systeminfo:return
/self->arch && ppid == $1/
{
copyoutstr("PowerPC", self->arch,257);
self->arch=0;
}

syscall::systeminfo:entry
/arg0==SI_PLATFORM && ppid == $1/
{
self->mach = arg1;
}

syscall::systeminfo:return
/self->mach && ppid == $1/
{
copyoutstr("APPL,PowerBook-G4", self->mach,257);
self->mach=0;
}

Posted at 11:41AM Jun 01, 2005 by damienf in Solaris  |  Comments[0]