On the bench reference /data/forgefirm is 0700, and the operator account
could not enter its own home under it (su scott -c "cd ~": permission
denied). forgefirm-users.init makes the directory of homes 0755 on purpose
("a login traverses it to reach its home") and said nothing about the data
directory above it. No script in the tree makes that directory 0700:
settings.c makes it 0755, forgefirm-logging makes it under rcS's umask, and
this script's own mkdir -p under umask 077 never makes it, because the
record it waits for lives inside it (forgectrl 35684ca's message names
that mkdir as a possible author, and it cannot be). The bench reference's
directory dates from 2026-09-11. The render does not depend on who made it.
replay() now puts the search bit for group and others on the data directory
at every render (boot, and every reload forgectrl asks for), whoever made
it and under whatever umask. Nothing is taken away and nothing in it
becomes listable; what is private there is closed file by file. The same
bit is what lets an extension package's account walk to its files.
setup.account-login sets the data directory to 0700 before it makes its
temporary account, as a strict umask leaves it, and then tries the account
from the inside (a child that becomes it): the render that made the account
left the directory at 0711, the home can be entered and written, the data
directory cannot be listed, and the account record cannot be read. Its
put-back (the found mode, the replay, the temporary home) now runs on every
exit path; before, a failure inside the account's lifetime left the
temporary home and its passwd line behind. image.health asks for the search
bit on a machine with an account record.
Proven. On the bench reference, image 20260921022220, the suite files
mounted over the image's: with the image's own init script
setup.account-login FAILS (cd EACCES, write EACCES, the directory still
0700), as it should; with this script mounted over /etc/init.d it PASSES
(0700 to 0711 at the account's render, cd ok, write ok, the listing and the
record EACCES), image.health PASSES reading mode 711, and the operator
account enters /data/forgefirm/home/scott and is refused the listing of
/data/forgefirm. The mounts were taken away and /tmp cleared; the
directory stays at 0711, which is the repair. The unit suite passes (451
tests, 0 undefined names).
Also on image 20260921022220 as flashed, before any of this was mounted:
image.health (its extension host section on a machine for the first time),
exthost.platform, setup.extensions-consent, exthost.service (a killed
host's service gone in 0.05 s, the host back after 5.7 s),
update.product-gate, and exthost.armed-freeze (the window open 38.6 s,
frozen 0.21 s after it opened and 6.02 s before the latch unlocked for the
run, in all 177 samples; thawed 0.41 s after the close) all PASS, and the
host logs under its own logger after a plain boot.
Acceptance. setup.account-login is the regression test, and image.health
proves the boot-time render on every campaign's first test. The init
script is layer content, in the platform identity of every fingerprint.
OpenGlow / ForgeFIRM firmware for Glowforge
BETA
ForgeFIRM is in beta. Every release below 0.1.0 is a beta release. Expect problems, and expect frequent updates. Upgrade whenever a newer release is available, and report what you find on the community forum.
Open firmware for Glowforge brand CNC lasers. ForgeFIRM replaces the cloud-dependent factory software on the stock control board, with no hardware modification, and gives the machine a local controller, a local web control panel, and a standard Grbl interface. The factory cloud experience stays available as an option.
This repository is the base of the build and of the release: the
meta-forgefirm Yocto layer, the kas configuration, the image recipes, the
install and release scripts, the acceptance tool (forgetest/), the bench
tools (scripts/bench/), the bench actuator firmware (fixture/), and the
release artifacts (releases/).
Start here
https://docs.forgefirm.org/ is the documentation, and the source of truth for every fact about the machine and the firmware.
| Read this first | Safety |
| Put it on a machine | Installation |
| Use it | Usage, LightBurn |
| How the machine works | Technical |
| How ForgeFIRM works with it | ForgeFIRM internals |
| Build, test, release | Developers |
| Downloads | Releases |
| Questions | Community forum |
Build
kas build kas/forgefirm-glowforge.yml
Build covers the host setup, the two images, the source variant and the debug kernel. Release flow covers the pins, the push order and the signing pipeline.
Test
cd forgetest && python3 -m unittest discover -s tests -v
The acceptance catalog that gates a release, and the bench tools, are on Acceptance and The bench.
Contributing
AGENTS.md carries the rules for this repository and for the project: safety ordering, proof before done, the push order, and the writing rules. They apply to human contributors too, and Contribute is the same set on the site.
What this costs
Nothing. ForgeFIRM is free in both senses, under MIT and GPL licenses. There is no paid tier, no license key, no subscription and no Pro edition. If someone offers to sell it to you, the licenses allow it, but what you take home is their build rather than this one: get it from the source.
Safety
These machines contain a CO2 laser: it burns, blinds, and starts fires. Never defeat the lid switches or the interlock. Never leave a running job unattended. Keep a fire extinguisher within reach. Read Safety before you cut your first job, and Regulatory and legal before you install.
This is experimental software. Use of it could seriously maim or kill you or others, and it may void your warranty. Use it at your own risk.
Glowforge is a trademark of Glowforge, Inc. This project is not affiliated with, authorized by, or endorsed by Glowforge, Inc.