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Most of those are supported by "containers", which are after all just a chroot and a process tree with restricted visibility into certain kernel objects. Assign

Most of those are supported by "containers", which are after all just a chroot and a process tree with restricted visibility into certain kernel objects. Assigning individual NICs or running a browser with extra isolation is one of the classic Linux namespace tutorials. > You can setup Linux in a jail. I don't see how this can be possible. Could you explain more how to boot a Linux kernel within a FreeBSD jail? edit: I'm not talking about running binaries compiled for Linux under FreeBSD. The parent said it's possible to set up Linux within a jail, so I want to see instructions to boot an actual Linux kernel as a FreeBSD process.

rwaksmunski 3y ago
You use FreeBSD kernel and Linux userland. FreeBSD can emulate Linux system calls.
- School-Cotton 3y ago
  There is no such thing as “Linux userland”. Obviously you can port most GNU utilities and other things that are typically run on Linux on FreeBSD but that’s a far cry from “running Linux”.
deleted 3y ago
[deleted]
NexRebular 3y ago
Using the linuxulator. https://wiki.freebsd.org/LinuxJails https://wiki.freebsd.org/LinuxJails
throw0101c 3y ago
> Assigning individual NICs or running a browser with extra isolation is one of the classic Linux namespace tutorials. With FreeBSD you can set up a standalone virtualized network stack: * https://klarasystems.com/articles/virtualize-your-network-on-freebsd-with-vnet/ https://klarasystems.com/articles/virtualize-your-network-on... * https://man.freebsd.org/cgi/man.cgi?vnet https://man.freebsd.org/cgi/man.cgi?vnet * https://wiki.freebsd.org/Jails/VNET https://wiki.freebsd.org/Jails/VNET
- the8472 3y ago
  I read the quote you're replying to as "you can also do this under linux", i.e. it didn't dispute that freebsd jails can do it. But it's not a distinguishing feature of jails.
chungy 3y ago
You could maybe build and run User-Mode Linux on FreeBSD, and run that in a jail. That's pretty close to your own interpretation of "Linux kernel in a jail" But to be real: that's obviously not what was meant. If someone wants to install and run Ubuntu inside a FreeBSD jail, it is well possible to do that. Nobody really cares if it's running kernel.org code, just that the binaries are running as expected.

rwaksmunski 3y ago

You use FreeBSD kernel and Linux userland. FreeBSD can emulate Linux system calls.

School-Cotton 3y ago
There is no such thing as “Linux userland”. Obviously you can port most GNU utilities and other things that are typically run on Linux on FreeBSD but that’s a far cry from “running Linux”.

deleted 3y ago

[deleted]

NexRebular 3y ago

Using the linuxulator. https://wiki.freebsd.org/LinuxJails https://wiki.freebsd.org/LinuxJails

throw0101c 3y ago

> Assigning individual NICs or running a browser with extra isolation is one of the classic Linux namespace tutorials. With FreeBSD you can set up a standalone virtualized network stack: * https://klarasystems.com/articles/virtualize-your-network-on-freebsd-with-vnet/ https://klarasystems.com/articles/virtualize-your-network-on... * https://man.freebsd.org/cgi/man.cgi?vnet https://man.freebsd.org/cgi/man.cgi?vnet * https://wiki.freebsd.org/Jails/VNET https://wiki.freebsd.org/Jails/VNET

the8472 3y ago
I read the quote you're replying to as "you can also do this under linux", i.e. it didn't dispute that freebsd jails can do it. But it's not a distinguishing feature of jails.

chungy 3y ago

You could maybe build and run User-Mode Linux on FreeBSD, and run that in a jail. That's pretty close to your own interpretation of "Linux kernel in a jail" But to be real: that's obviously not what was meant. If someone wants to install and run Ubuntu inside a FreeBSD jail, it is well possible to do that. Nobody really cares if it's running kernel.org code, just that the binaries are running as expected.