From eb94c731605c3bf2064e75fb7b9499c4618516a9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Karel=20Ko=C4=8D=C3=AD?= <karel.koci@nic.cz>
Date: Wed, 23 Oct 2019 11:39:36 +0200
Subject: x11-boot/myinitramfs: drop root and wait for UUID drive

---
 sys-boot/myinitramfs/files/gen.sh   |  6 +++---
 sys-boot/myinitramfs/files/init.enc | 23 ++++++++++-------------
 2 files changed, 13 insertions(+), 16 deletions(-)

(limited to 'sys-boot/myinitramfs/files')

diff --git a/sys-boot/myinitramfs/files/gen.sh b/sys-boot/myinitramfs/files/gen.sh
index b633731..916ba84 100755
--- a/sys-boot/myinitramfs/files/gen.sh
+++ b/sys-boot/myinitramfs/files/gen.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/ash
 set -e
 
 OUT="$(readlink -f "$1")"
@@ -14,11 +14,11 @@ cp baselist "$LIST"
 echo "file /init ./init.enc 755 0 0" >> "$LIST"
 echo >> "$LIST"
 # Executables
-while read EXE; do
+while read -r EXE; do
 	P="$(which "$EXE")"
 	echo "# $EXE" >> "$LIST"
 	echo "file $P	$P	755 0 0" >> "$LIST"
-	ldd "$P" | awk '{ print $3 }' | sed -n '/^[^ ]\+$/p' | while read LIB; do
+	ldd "$P" | awk '{ print $3 }' | sed -n '/^[^ ]\+$/p' | while read -r LIB; do
 		echo "file $LIB	$LIB	755 0 0" >> "$LIST"
 	done
 done <exelist
diff --git a/sys-boot/myinitramfs/files/init.enc b/sys-boot/myinitramfs/files/init.enc
index 9fcde55..b1cd3a2 100755
--- a/sys-boot/myinitramfs/files/init.enc
+++ b/sys-boot/myinitramfs/files/init.enc
@@ -1,4 +1,4 @@
-#!/bin/busybox sh
+#!/bin/busybox ash
 # vim:ft=sh
 
 # Init must have pid 1 otherwise switch_root won't work.
@@ -42,17 +42,14 @@ busybox mount -t sysfs none /sys || fail "/sys mount failed!"
 busybox mount -t devtmpfs none /dev || fail "/dev mount failed!"
 
 # Now open and mount root
-root=""
+uuid=""
 rootflags=""
 recovery=false
 
 for opt in $(cat /proc/cmdline); do
 	case "$opt" in
-		root=*)
-			root=${opt:5}
-			;;
 		rootuuid=*)
-			root="$(blkid | awk "/UUID=\"${opt:9}\"/{ print \$1 }" | tr -d ':')"
+			uuid="${opt:9}"
 			;;
 		rootflags=*)
 			rootflags=${opt:10}
@@ -60,7 +57,7 @@ for opt in $(cat /proc/cmdline); do
 		recovery)
 			recovery=true
 			;;
-		BOOT_IMAGE=*|initrd=*)
+		BOOT_IMAGE=*|initrd=*|fbcon=*)
 			# Ignore those
 			;;
 		*)
@@ -71,19 +68,19 @@ done
 
 $recovery && fail "Requested recovery."
 
-[ -z "$root" ] && fail "Missing root argument!"
+[ -z "$uuid" ] && fail "Missing rootuuid argument!"
 
-echo -ne "${C_GRAY}Waiting for root ($root)..."
+echo -ne "${C_GRAY}Waiting for root ($uuid)..."
 CNT=10
-while [ ! -e "$root" ] && [ $CNT -gt 0 ]; do
-	CNT=$(expr $CNT - 1)
+while [ $CNT -gt 0 ] && ! blkid | grep -q "UUID=\"$uuid\""; do
+	CNT=$((CNT - 1))
 	sleep 1
 	echo -n " $CNT"
 done
 echo -e "${C_NO}"
-[ -e "$root" ] || fail "Root not located!"
 
-# TODO mount boot parition and look for key saved there (on unlock remove it)
+root="$(blkid | awk -v uuid="UUID=\"$uuid\"" '$2 == uuid { gsub(/:$/,"",$1); print $1 }')"
+[ -e "$root" ] || fail "Root not located!"
 
 echo -e "${C_GREEN}Unlocking root...${C_NO}"
 cryptsetup open "$root" encroot || fail "Unlocking root failed! /proc/cmdline=$(cat /proc/cmdline)"
-- 
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