| Filename | Latest commit message | Latest commit date |
|---|---|---|
Jorijn van der Graaf
905e261d63
An aport, the units, and everything a phone needs to come up with a working sensor without a single command being run by hand. Verified on the dev phone across two reboots: modules-load.d loads qcomtee, tmpfiles builds the SFS root, the mount unit brings up persist, and the daemon is ready 51 seconds into the boot, owning net.reactivated.Fprint with the enrolled finger visible. The packaging shape is the one imsd uses for 81voltd. A versioned provides="fprintd=..." satisfies plasma-workspace -- its Users KCM is the enrolment UI and speaks exactly this bus name -- and excludes the real fprintd, which is not tidiness: fprintd is D-Bus-activatable, so a client call would otherwise start it and fight us for the name. The cost is the fprintd-* CLIs, which go with the package. fprintd-pam is an install_if subpackage pinned to the exact fprintd version, so the provides breaks its condition and apk purges it -- taking pam_fprintd, which is the entire point of the daemon, with it. Depending on it explicitly is what keeps it, and it has no dependency on fprintd itself. Two things the packaging exposed in the daemon: The transcript is for experiments, not for a shipped daemon. A file per start in an unrotated directory, recording the time of every unlock, to say what the journal already has. It is now opt-in behind --log-dir, which is what deploy-dev.sh passes since fplearn.sh reads it. Taking it off the daemon path also took away the setvbuf it was doing as a side effect of dup2'ing fd 1, and under systemd stdout is a pipe, which means full buffering: the daemon started, worked, answered D-Bus calls, and printed nothing. A working daemon that looks hung. stdout is now line-buffered from the first line of main. The config ships as generated by fp6fpcfg.py --daemon --verbose, sha256 b205c756914a66f1, because that is the file every accuracy number was measured on. The quieter variant is untested and switching is a measurement. The trustlet is not here and never will be: focal64.mbn is a proprietary OEM-signed blob, and the unit's ConditionPathExists is what keeps the package inert without it -- as it does on a kernel with no CONFIG_QCOMTEE. |
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| .. | ||
| 80-fingerprintd.preset | ||
| APKBUILD | ||
| build-package.sh | ||
| deploy-dev.sh | ||
| fingerprintd.json | ||
| fingerprintd.modules-load.conf | ||
| fingerprintd.service | ||
| fingerprintd.tmpfiles.conf | ||
| fpenrol.sh | ||
| fplearn.sh | ||
| fptrial.sh | ||
| make-bin-tarball.sh | ||
| make-libqcomtee.sh | ||
| make-sysroot.sh | ||
| mnt-persist.mount | ||
| net.reactivated.Fprint.conf | ||
| net.reactivated.fprint.device.policy | ||
| net.reactivated.Fprint.service | ||
| README.config.md | ||
fingerprintd.json — where it comes from, and why this exact file
The trustlet gates its config file on common.configuration_uuid and silently
falls back to built-in defaults on a mismatch, so the file is not decorative:
SYNC_CONFIG returning 0 is what makes the whole init chain run.
This copy is generated, not hand-written. Its source is fp6fpcfg.py in the
fp6 bring-up repo, which builds it from the captured stock configuration dump
(journal/fingerprint/captures/2026-08-25-focal64-effective-config-from-stock.txt):
utilities/fp6fpcfg.py --daemon --verbose > packaging/fingerprintd.json
sha256 begins b205c756914a66f1.
Why the --verbose variant
--verbose here is the trustlet's own log level, not the daemon's. It is
shipped because it is the file every accuracy number was measured on — 30/30
held presses, zero false accepts, 36-330 ms to a verdict — and the TA's log
level cannot be raised again by a runtime SYNC_CONFIG, so a session that
needs the matcher's own lines has to have started with it.
--daemon alone produces the same file with trustlet logging off (sha256
6c4503e628406424, four diagnosis.* keys differ and nothing else). It is
plausibly the better shipping default and it is untested: no rate in the
journal was measured on it. Switching is a measurement, not an edit.
The two policy keys
common.max_authentication_rescan_times: 0— at the stock budget a wrong finger never yields a terminal frame, so a PAM client waits forever for theverify-no-matchit needs.trustlet.enable_trusted_enrollment: false— skips the challenge compare and thehw_auth_tokenHMAC verify. pmOS has no Gatekeeper to issue a token and nothing on pmOS verifies one.