fingerprintd/packaging/mnt-persist.mount

# SPDX-License-Identifier: GPL-3.0-only
# SPDX-FileCopyrightText: Copyright (C) 2026 Catcrafts®
# The Android persist partition. QTEE's own storage paths land here through
# the SFS root's persist-data/root3 symlinks, and the enrolled templates are
# the containers under data/ — the same place stock Android keeps them, which
# is not a choice: every container is sealed to a hardware anti-rollback
# counter, so a template cannot be relocated, copied or restored.
[Unit]
Description=Android persist partition
Documentation=https://forgejo.catcrafts.net/Catcrafts/fingerprintd
ConditionPathExists=/dev/disk/by-partlabel/persist

[Mount]
What=/dev/disk/by-partlabel/persist
Where=/mnt/persist
Type=ext4
Options=rw,nosuid,nodev,noexec
Package the daemon, so a fingerprint survives a reflash 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. 2026-09-05 02:52:01 +02:00			`# SPDX-License-Identifier: GPL-3.0-only`
			`# SPDX-FileCopyrightText: Copyright (C) 2026 Catcrafts®`
			`# The Android persist partition. QTEE's own storage paths land here through`
			`# the SFS root's persist-data/root3 symlinks, and the enrolled templates are`
			`# the containers under data/ — the same place stock Android keeps them, which`
			`# is not a choice: every container is sealed to a hardware anti-rollback`
			`# counter, so a template cannot be relocated, copied or restored.`
			`[Unit]`
			`Description=Android persist partition`
			`Documentation=https://forgejo.catcrafts.net/Catcrafts/fingerprintd`
			`ConditionPathExists=/dev/disk/by-partlabel/persist`

			`[Mount]`
			`What=/dev/disk/by-partlabel/persist`
			`Where=/mnt/persist`
			`Type=ext4`
			`Options=rw,nosuid,nodev,noexec`