From: Alyssa Ross <hi@alyssa.is>
To: devel@spectrum-os.org
Subject: [PATCH nixpkgs 15/16] spectrumPackages.sys-vms.app: init
Date: Sun, 11 Apr 2021 11:57:39 +0000 [thread overview]
Message-ID: <20210411115740.29615-16-hi@alyssa.is> (raw)
In-Reply-To: <20210411115740.29615-1-hi@alyssa.is>
This is a very barebones VM. It's purpose is just to be a
demonstration that other VMs can connect to the router and have their
packets reach the network. So all it does is infer its IPv4 address,
and the IPv4 address of the router, from the MAC address of its
virtual ethernet device, and configure the network interfaces and
routes appropriately.
vmID is an integer seed we can use to derive things for the VM like IP
and VSOCK addresses. I don't foresee this sitting around, because I
think it would make more sense for this to be assigned at runtime,
since starting arbitrary VMs at runtime is a goal. But we'll need
some way to ensure unique addresses.
---
.../linux/spectrum/vm/app/default.nix | 63 +++++++++++++++++++
.../os-specific/linux/spectrum/vm/default.nix | 2 +
2 files changed, 65 insertions(+)
create mode 100644 pkgs/os-specific/linux/spectrum/vm/app/default.nix
diff --git a/pkgs/os-specific/linux/spectrum/vm/app/default.nix b/pkgs/os-specific/linux/spectrum/vm/app/default.nix
new file mode 100644
index 00000000000..65dbb51f5e1
--- /dev/null
+++ b/pkgs/os-specific/linux/spectrum/vm/app/default.nix
@@ -0,0 +1,63 @@
+{ runCommand, writeScript, writeText, makeRootfs
+, busybox, execline, linux_vm, jq, iproute
+}:
+
+runCommand "vm-app" rec {
+ linux = linux_vm;
+
+ login = writeScript "login" ''
+ #! ${execline}/bin/execlineb -s0
+ unexport !
+ ${busybox}/bin/login -p -f root $@
+ '';
+
+ rootfs = makeRootfs {
+ rcServices.ok-all = {
+ type = writeText "ok-all-type" ''
+ bundle
+ '';
+ contents = writeText "ok-all-contents" ''
+ net
+ '';
+ };
+
+ rcServices.net = {
+ type = writeText "net-type" ''
+ oneshot
+ '';
+ up = writeText "net-up" ''
+ backtick -i LOCAL_IP {
+ pipeline { ip -j link show eth0 }
+ pipeline { jq -r ".[0].address | split(\":\") | .[3:6] | \"0x\" + .[]" }
+ xargs printf "100.%d.%d.%d"
+ }
+ importas -iu LOCAL_IP LOCAL_IP
+
+ backtick -i REMOTE_IP {
+ jq -jn --arg localip $LOCAL_IP
+ "$localip | split(\".\") | .[3] |= tonumber - 1 | join(\".\")"
+ }
+ importas -iu REMOTE_IP REMOTE_IP
+
+ if { ip address add ''${LOCAL_IP}/31 dev eth0 }
+ if { ip link set eth0 up }
+ ip route add default via $REMOTE_IP
+ '';
+ };
+
+ services.getty.run = writeScript "getty-run" ''
+ #! ${execline}/bin/execlineb -P
+ ${busybox}/bin/getty -i -n -l ${login} 38400 ttyS0
+ '';
+
+ path = [ iproute jq ];
+ };
+
+ inherit (rootfs) squashfs;
+ vmID = 0;
+} ''
+ mkdir $out
+ echo "$vmID" > $out/vm-id
+ ln -s $linux/bzImage $out/kernel
+ ln -s $squashfs $out/squashfs
+''
diff --git a/pkgs/os-specific/linux/spectrum/vm/default.nix b/pkgs/os-specific/linux/spectrum/vm/default.nix
index c4ff729cb8a..f5d591a960a 100644
--- a/pkgs/os-specific/linux/spectrum/vm/default.nix
+++ b/pkgs/os-specific/linux/spectrum/vm/default.nix
@@ -1,6 +1,8 @@
{ callPackage }:
{
+ app = callPackage ./app { };
+
comp = callPackage ./comp { };
net = callPackage ./net { };
--
2.30.0
next prev parent reply other threads:[~2021-04-11 12:01 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-11 11:57 [PATCH nixpkgs 00/16] Inter-guest networking Alyssa Ross
2021-04-11 11:57 ` [PATCH nixpkgs 01/16] linux: enable Xen everywhere it can be Alyssa Ross
2021-04-11 11:57 ` [PATCH nixpkgs 02/16] cloud-hypervisor: 0.8.0 -> 0.14.1 Alyssa Ross
2021-04-11 11:57 ` [PATCH nixpkgs 03/16] mdevd: init at 0.1.3.0 Alyssa Ross
2021-04-11 11:57 ` [PATCH nixpkgs 04/16] spectrumPackages.linux_vm: fix cloud-hypervisor hotplug Alyssa Ross
2021-04-11 11:57 ` [PATCH nixpkgs 05/16] spectrumPackages.linux_vm: allow config overrides Alyssa Ross
2021-04-11 11:57 ` [PATCH nixpkgs 06/16] crosvm: support setting guest MAC from --tap-fd Alyssa Ross
2021-04-11 11:57 ` [PATCH nixpkgs 07/16] spectrumPackages: export makeRootfs Alyssa Ross
2021-04-11 11:57 ` [PATCH nixpkgs 08/16] spectrumPackages.rootfs: add s6-rc support Alyssa Ross
2021-04-11 11:57 ` [PATCH nixpkgs 09/16] spectrumPackages.rootfs: make /var/lib and /var/run Alyssa Ross
2021-04-11 11:57 ` [PATCH nixpkgs 10/16] spectrumPackages.rootfs: add dbus configuration Alyssa Ross
2021-04-11 11:57 ` [PATCH nixpkgs 11/16] spectrumPackages.rootfs: add connman dbus services Alyssa Ross
2021-04-11 11:57 ` [PATCH nixpkgs 12/16] spectrumPackages.sys-vms.comp: init Alyssa Ross
2021-04-11 11:57 ` [PATCH nixpkgs 13/16] spectrumPackages.makeRootfs: move to default.nix Alyssa Ross
2021-04-11 11:57 ` [PATCH nixpkgs 14/16] spectrumPackages.sys-vms.net: init Alyssa Ross
2021-04-14 20:49 ` Alyssa Ross
2021-04-11 11:57 ` Alyssa Ross [this message]
2021-04-11 11:57 ` [PATCH nixpkgs 16/16] spectrumPackages.spectrum-testhost: init Alyssa Ross
2021-04-14 22:15 ` [PATCH nixpkgs 00/16] Inter-guest networking Cole Helbling
2021-04-14 23:56 ` Alyssa Ross
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