(no subject)

[ebiederm]

Subject: Re: [CFT][RFC] Linux/i386 boot protocol version 2.04
In-Reply-To: <m1d6xmuipv.fsf@frodo.biederman.org>
From: ebiederm@xmission.com (Eric W. Biederman)
Date: 30 Mar 2002 18:33:07 -0700
In-Reply-To: <m1d6xmuipv.fsf@frodo.biederman.org>
Message-ID: <m14rixv7vw.fsf@frodo.biederman.org>
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ebiederm@xmission.com (Eric W. Biederman) writes:

> I have been doing some very weird things with booting the Linux kernel
> for a long time.  
>   - Entering the kernel in 32bit mode to avoid 16bit BIOS calls.  
>   - Converting bzImage into static ELF executables.  
>   - Hard coding a kernel command-line
>   - Going back to 16bit mode to make BIOS calls if necessary.
> 
> This version of the boot protocol should be fully backwards compatible
> but has new capabilities so I can do all of the above cleanly.
> 
> The current plan is to send this to Linus in the next couple of days
> as soon as he gets back.
> 
> 
> The patch series is at:
> ftp://download.lnxi.com/pub/src/linux-kernel-patches/boot/
> 
> The overall patch is:
> ftp://download.lnxi.com/pub/src/linux-kernel-patches/boot/linux-2.5.7.boot.diff
> 
> Anyway please tell me what you think.

For those having trouble getting in an alternative address is:
http://www.xmission.com/~ebiederm/files/boot/linux-2.5.7.boot.diff


Eric

/proc enhancement

[George Kola]

  We are working on a project to enhance linux /proc.
This is of particular importance to the 'Paradayn'
project (cs.wisc.edu/paradyn). 
  We want to add the ability to specifically trace a
set of system calls and the ability to trace  the
system call entry or exit or both. For this we wanted
to add two structs to

struct task_struct in include/linux/sched.h


struct  syscall_set {
   char traced[8];
}


we want to add 

struct syscall_set entry,exit; to task_struct in 
include/linux/sched.h

In the beginning of task_struct we found that

struct task_struct {
	/*
	 * offsets of these are hardcoded elsewhere - touch
with care
	 */

          We want to know what we would be breaking if
we add the structs at the end ? (so that we can fix
them)


         Also how do we initialize it in 
#define INIT_TASK(tsk) (we want to set all bits in the
struct to 1).


Thanks,
George

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