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144 commits

Author SHA1 Message Date
Daniel Barlow
0c41e9305c extract service output watcher to fennel module 2023-07-08 23:08:24 +01:00
Daniel Barlow
708350711b allow running scripts using fennelrepl 
e.g.

FENNEL_PATH=pkgs/?/init.fnl\;pkgs/?.fnl nix-shell --run "fennelrepl ./examples/acquire-delegated-prefix.fnl /tmp/boo eth1"
 2023-07-08 23:08:24 +01:00
Daniel Barlow
2de4d7a8f9 fennel: extract some common functions into a shareable module 2023-07-05 20:23:27 +01:00
Daniel Barlow
c3bb33c9ce add fennelrepl package 
Runs fennel using a Lua compiled with the same options as the
host system, and with packages set up so it can find all the local
Lua packages

To shorten the dev feedback loop further, allows FENNEL_PATH to be set
on the command line so you can point directly it at the Fennel sources
for some library you're working against instead of having to run
nix-build and compile them to Lua
 2023-07-04 22:58:51 +01:00
Daniel Barlow
24befe6bf7 install fennel from source as a package 
nixos lua packaging is giving me a headache
 2023-07-04 22:56:17 +01:00
Daniel Barlow
41687e916d rename luaSmall package to lua 2023-07-02 18:19:54 +01:00
Daniel Barlow
3900683413 simplify protocol for watchers of service output directories 
Previously: the service wrote a timestamp and the receiver
read and parsed it to see if there was new data

Now: the service writes and removes a .lock file to prevent
the receiver reading partial data. The receiver is responsible
for remembering the *previous* state and only updating if it's changed
 2023-07-02 12:09:13 +01:00
Daniel Barlow
9aa5ff6ed1 make a package for odhcpc-script 2023-06-30 20:02:03 +01:00
Daniel Barlow
b6e72504d6 ipv6 default route 
needs to specify the ppp0 *peer* address not the local address
 2023-06-30 10:17:33 +01:00
Daniel Barlow
c595ae0ccb firewallgen: make nft shebang work 2023-06-27 21:26:23 +01:00
Daniel Barlow
6101f3f3d8 load necessary kernel modules for firewall 2023-06-27 21:18:09 +01:00
Daniel Barlow
591bd78509 extract writeKconfig to its own file 2023-06-26 20:49:43 +01:00
Daniel Barlow
6bc45c2b55 preinit: null-terminate argv array for execve 2023-06-22 09:29:44 +01:00
Daniel Barlow
d79a1e15bb get fennel from source instead of luarocks 2023-06-20 20:19:11 +01:00
Daniel Barlow
a7e7146887 preinit: disable nolibc 
- it stopped working with 22.11->23.05
- linking statically against musl is about 17k, so
  this is costing us 11k or so
 2023-06-18 23:04:26 +01:00
Daniel Barlow
d66f5901a2 fix nftables syntax 2023-06-18 22:18:44 +01:00
Daniel Barlow
80639a7256 add firewallgen package, which creates an nft script 2023-06-18 17:40:16 +01:00
Daniel Barlow
3f4dbfcfd3 ipv6 prefix delegation for rotuer 
much tidying needed, but it works
 2023-05-31 23:29:05 +01:00
Daniel Barlow
fdffdbb22a add writeFennelScript function, make ifwait use it 2023-05-29 20:20:12 +01:00
Daniel Barlow
447f068569 partly support getting IPv6 addresses 
- gets interface id from ppp
- runs odhcpc to get RA and prefix delegation
- doesn't do anything useful with the data yet
 2023-05-24 23:01:50 +01:00
Daniel Barlow
339c2d9873 upgrade to ppp 2.5.0 2023-05-22 23:31:57 +01:00
Daniel Barlow
39b09df4d7 liminix-rebuild: test if nix-build succeeds 2023-05-20 22:30:22 +01:00
Daniel Barlow
ea2f48cfc9 liminix-rebuild copy nix-store-paths to /persist 2023-05-20 21:55:37 +01:00
Daniel Barlow
b0098f1c8e move min-list-garbage into min-collect-garbage pkg 
we don't want it in the same package as min-copy-closure as
that depends on bash
 2023-05-20 21:55:23 +01:00
Daniel Barlow
68ab6faeb3 write etc/nix-store-paths in systemConfiguration 2023-05-19 23:57:50 +01:00
Daniel Barlow
00aeb81811 min-list-garbage: check all store paths against file 
this is step 1 of min-collect-garbage, no point implementing
deletion ourselves when rm -r exists

(arguably no point in implementing any of it, but this is the bit we
can't do efficiently in bourne shell - it means we're reading the
store-paths list once instead of grepping it afresh for every entry in
/nix/store/)
 2023-05-19 23:49:11 +01:00
Daniel Barlow
a809c28dde liminix-rebuild source /etc/profile to get PATH for reboot 2023-05-18 22:43:08 +01:00
Daniel Barlow
292a4c4d46 liminix-rebuild: put activate in /persist 2023-05-17 22:49:10 +01:00
Daniel Barlow
b1f4db00a0 add liminix-rebuild command 2023-05-17 15:38:22 +01:00
Daniel Barlow
ddd7b68b30 min-copy-closure: remove verbose output 2023-05-11 23:52:13 +01:00
Daniel Barlow
cc6c790746 set up path for min-copy-closure 2023-05-07 22:51:10 +01:00
Daniel Barlow
bcf5dac5d7 min-copy-closure: honour $SSH_COMMAND env var 2023-05-07 22:07:35 +01:00
Daniel Barlow
1c002c4065 min-copy-closure: improve output 2023-05-07 22:06:49 +01:00
Daniel Barlow
74f2aa6247 initramfs-peek: an initramfs image with a shell, for debugging 2023-05-06 23:03:51 +01:00
Daniel Barlow
888a0d5f74 mips-vm: allow env var to override la network interface 
this is handy if you want to connect to it from the host
for e.g. seeing if min-copy-closure works
 2023-05-06 23:01:56 +01:00
Daniel Barlow
30153a2d4e add min-copy-closure, a minimal nix-copy-closure substitute 2023-05-06 22:47:03 +01:00
Daniel Barlow
28264febdb add smaller-than-gnu "hello world" package 2023-04-23 20:56:20 +01:00
Daniel Barlow
65dfbad365 systemconfig: chown files if uid/gid > 0 2023-04-15 22:53:28 +01:00
Daniel Barlow
5dd0c6e3c0 rewrite preinit as very small C program 
By using the kernel "nolibc" header to avoid requiring a C library, we
can bring the initramfs size to around 4k

This does involve a tiny bit of inline mips assembly which I'm not
sure about. gcc seems unwilling to generate the code to load $gp at
function entry of main(), so we do it by hand - but I'd rather find
out why gcc doesn't.
 2023-04-15 18:27:39 +01:00
Daniel Barlow
11f2715d18 mips-vm: enlarge mtd 2023-04-15 17:22:35 +01:00
Daniel Barlow
1cc0b13b57 rewrite systemconfig in C and link statically 
systemconfig (a.k.a "activate") is run from the initramfs. Converting
it from a shell script to an executable means it doesn't depend on
there being a shell in the initramfs
 2023-04-15 17:21:27 +01:00
Daniel Barlow
c744ef8c17 systemconfig: accept uid and gid options 
all we do with them is assert they're zero, to unbreak CI.
This code is getting rewritten anyway
 2023-04-14 23:19:56 +01:00
Brian McKenna
fb796e61e0 pseudofile: allow setting uid and gid of files 
Necessary for Dropbear to accept non-root authorized_keys files.
 2023-04-14 23:12:52 +01:00
Daniel Barlow
2e15acd61c whitespace 2023-04-10 17:46:39 +01:00
Daniel Barlow
54a1ab3529 support jffs2, with initramfs 
the jffs2 filesystem contains only /nix/store and a script which is
run in early init (initramfs) and is responsible for recreating
"traditional" directories (/bin /etc/**/* /var &c) based on the
configuration.

this is tested only in qemu so far and could use some cleanup
 2023-04-04 23:35:49 +01:00
Daniel Barlow
25d9da967c remove support for sockets in pseudofiles 
(1) we can't make them on a real filesystem except by running
something that calls socket()
(2) whyever would we want to?
 2023-04-04 23:23:22 +01:00
Daniel Barlow
aa1a2e5d75 package gen_init_cpio, tool for making an initramfs 2023-04-04 22:54:20 +01:00
Daniel Barlow
f02efa3fe3 refactor 2023-04-04 21:11:28 +01:00
Daniel Barlow
342c87b256 qemu: boot from mtd using mtd2block 
doesn't make much difference for squashfs but this will make it much
simpler to test jffs2/ubifs
 2023-04-04 21:07:02 +01:00
Daniel Barlow
07e7d63ade fixup 98243d43da 2023-04-02 18:46:27 +01:00