init: Move all copy of files to before udev triger is run

board/common/rootfs/usr/lib/finit/system/05-pre-udev.conf

@@ -0,0 +1,18 @@
+# Copy product-specific files (udev rules, factory config, etc.) to /
+# based on DT compatible strings, before udevd processes any events.
+#
+# <hook/mount/all> fires after all filesystems are mounted but before
+# finit enters runlevel S and starts any service, so the run task is
+# guaranteed to start ahead of udevd.  The <run/preudev/success>
+# condition below then blocks udevd until pre-udev has finished.
+#
+# Systems without a matching product directory exit immediately.
+run name:preudev cgroup.init [S] <hook/mount/all> log \
+	/usr/libexec/infix/pre-udev -- Probing platform
+
+# Hold udevd back until pre-udev has had a chance to install any
+# product-specific udev rules so that they are applied on first pass.
+service nowarn cgroup.system name:udevd notify:none env:-/etc/default/udevd pid:udevd log \
+	[S12345789] <run/preudev/success> /lib/systemd/systemd-udevd $UDEVD_ARGS -- Device event daemon (udev)
+service nowarn cgroup.system name:udevd notify:none env:-/etc/default/udevd pid:udevd log \
+	[S12345789] <run/preudev/success> udevd $UDEVD_ARGS -- Device event daemon (udev)

board/common/rootfs/usr/lib/finit/system/20-hw-wait.conf

@@ -5,5 +5,5 @@ run nowarn if:udevd cgroup.init <service/udevd/ready> log \
 
 # Now that everything should be probed, do a final pass over the
 # uevent queue before starting syslogd and everything else
-run nowarn if:udevd cgroup.init :post <service/udevd/ready> log \
+run nowarn if:udevd cgroup.init :post <run/preudev/success,service/udevd/ready> log \
 	[S] udevadm settle -t 30 --

board/common/rootfs/usr/libexec/infix/init.d/05-product

@@ -1,40 +1,22 @@
 #!/bin/sh
-# Find, install, and run product specific files and script in /etc
-# before resuming bootstrap.
+# Run product specific init scripts and set bootstrap conditions.
+#
+# Product-specific files (udev rules, factory config, etc.) are already
+# copied to / by the pre-udev run task before udevd starts.  This
+# script handles the remaining product init: running custom scripts
+# from /etc/product/init.d/ and setting finit conditions.
 #
 # Use /etc/product/init.d/S01-myscript for scripts, may be a symlink, it
 # will be called with `start` as its only argument.
-#
-# The compatible array is listed in the same order as the device tree,
-# most significant to least.  Hence the reverse.[], to ensure overrides
-# are applied in order of significance.
 ident=$(basename "$0")
 
 PRODUCT_INIT=/etc/product/init.d
-PREFIXD=/usr/share/product
-COMPATIBLES=$(jq -r '.compatible | reverse.[] | ascii_downcase' /run/system.json)
 
 note()
 {
     logger -I $$ -k -p user.notice -t "$ident" "$1"
 }
 
-found=false
-for PRODUCT in $COMPATIBLES; do
-    DIR="$PREFIXD/$PRODUCT"
-    if [ -d "$DIR" ]; then
-        note "Using vendor/product-specific defaults for $PRODUCT."
-        for dir in "$DIR"/*; do
-            [ -d "$dir" ] && cp -a "$dir" /
-        done
-        found=true
-    fi
-done
-
-if [ "$found" = false ]; then
-    note "No vendor/product-specific directory found, using built-in defaults."
-fi
-
 # Conditions for bootstrap services, this enables product specific
 # init scripts to prevent select services from starting.
 initctl -nbq cond set led

board/common/rootfs/usr/libexec/infix/pre-udev

@@ -0,0 +1,48 @@
+#!/bin/sh
+# Copy product-specific files to / based on DT compatible strings.
+# Designed to run before udevd, so that udev rules are in place when
+# the kernel starts enumerating devices.  No Python, no jq, no syslogd.
+#
+# Mirrors the platform detection from 00-probe and the copy logic from
+# 05-product, but reads the DT directly instead of /run/system.json.
+
+PREFIXD=/usr/share/product
+COMPAT=/sys/firmware/devicetree/base/compatible
+IDENT=$(basename "$0")
+
+note()
+{
+    logger -I $$ -k -p user.notice -t "$IDENT" "$*"
+}
+
+# Only DT-based systems have product-specific data keyed by compatible.
+# QEMU and x86/DMI systems have no product dirs to copy.
+[ -f "$COMPAT" ] || exit 0
+
+# The DT compatible property is a null-separated list of strings,
+# ordered most-specific first (e.g. "bananapi,bpi-r3\0mediatek,mt7986a").
+# Reverse the list so least-specific is applied first and more-specific
+# overrides it, matching the behaviour of 05-product.
+reversed=""
+while IFS= read -r c; do
+    [ -n "$c" ] || continue
+    reversed="$c${reversed:+ $reversed}"
+done <<EOF
+$(tr '\0' '\n' < "$COMPAT" | tr '[:upper:]' '[:lower:]')
+EOF
+
+found=false
+for compat in $reversed; do
+    dir="$PREFIXD/$compat"
+    [ -d "$dir" ] || continue
+
+    note "Using product-specific defaults for $compat."
+    for subdir in "$dir"/*; do
+        [ -d "$subdir" ] && cp -a "$subdir" /
+    done
+    found=true
+done
+
+$found || note "No product-specific directory found, using built-in defaults."
+
+exit 0

test/test.mk

@@ -30,7 +30,7 @@ endif
 
 test:
 	$(test-dir)/env -r $(base) $(mode) $(binaries) $(pkg-$(ARCH)) \
-		sh -c '$(ninepm) -v $(TESTS); rc=$?; \
+		sh -c '$(ninepm) -v $(TESTS); rc=$$?; \
 		       $(ninepm_report) github   $(test-dir)/.log/last/result.json; \
 		       $(ninepm_report) asciidoc $(test-dir)/.log/last/result.json; \
 		       chmod -R 777 $(test-dir)/.log; \