Re: Using older compiler (was Re: next Beta)

[E Nigma <enigma os2 ami com au>]

On Sunday 02 December 2001 05:30, you wrote:
> >?
> >?With user-mode-linux you can run a full build environment for any number 
of 
> >?Linux distroes at once. See user-mode-linux.sourceforge.net.
> >?
> This can be also done with chroot as well and using standard kernel (I
> believe user mode linux requires some patches to the kernel).

Not exactly. UML IS a patched 2.4 kernel. It runs as a user program (and so 
the name) with ordinary user provilege apart from a couple of points where 
privilege is needed for network configuration.

It's safer than a chroot gaol. It gives you a virtual computer with its own 
(sub)set of devices, its own network configuration, its own set of users. 
Just like a different real computer.

A mknod in the guest doesn't give you access to real hardware; in a chroot 
environment it does.

The only difference (and it's a minor one to most) is that it has a 
customised kerrnel that remaps I/O requests to the host. Like any customised 
kernel, there are differences from other customised kernels.




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