kernel, stage2: rearranged initrd hooks

stage2 has been thinking it's synonymous with propagator
and used to usurp kernel's belongings either; carefully
tear scripts apart so that kernel feature makes sure
initrd gets generated, and stage2 (which is still all
about propagator) cares for its bits.

doc/assumptions.txt

@@ -27,7 +27,7 @@ ALT Linux 6.0+ и GNU make 3.81+ (на которых и разрабатыва
 
     E: Couldn't find package
 
-* features.in/stage2/stage1/scripts.d/02-kdefault
+* features.in/kernel/stage1/scripts.d/80-make-initrd
 * features.in/stage2/stage1/scripts.d/03-test-kernel
 * sub.in/stage1/Makefile
 ** ожидают, что в stage1 попадёт строго одно ядро сообразно

features.in/kernel/stage1/scripts.d/10-initrd-base

@@ -1,6 +1,5 @@
 #!/bin/sh
 # prepare base make-initrd configuration for stage1
-# see also http://www.altlinux.org/Make-initrd-propagator
 
 MAKE_INITRD_VER="`make-initrd -V \
 	| sed -rn 's/^make-initrd version ([0-9.]+)/\1/p'`"
@@ -10,8 +9,3 @@ if [ "`rpmvercmp "$MAKE_INITRD_VER" "0.8.1"`" != "-1" ]; then
 else
 	sed -i 's/AUTODETECT/#&/' /etc/initrd.mk	# see also #28578
 fi
-
-echo 'FEATURES += propagator' >> /etc/initrd.mk
-
-# FIXME: #29705 workaround
-echo 'MODULES_PRELOAD += ahci' >> /etc/initrd.mk

features.in/kernel/stage1/scripts.d/80-make-initrd

@@ -1,7 +1,7 @@
 #!/bin/sh -efux
 # NB: /etc/initrd.mk carefully prepared by earlier scripts
 
-verbose() { [ -z "$GLOBAL_VERBOSE" ] || echo "** 80-make-initfs: $@" >&2; }
+fatal() { echo "** error: $@" >&1; exit 1; }
 
 kver="$(rpm -qa 'kernel-image*' \
 	    --qf '%{installtime} %{version}-%{name}-%{release}\n' \
@@ -10,6 +10,9 @@ kver="$(rpm -qa 'kernel-image*' \
 	| cut -f 2 -d ' ' \
 	| sed 's/kernel-image-//')"
 
+[ -n "$kver" ] ||
+	fatal "no kernel version identified"
+
 MAKE_INITRD_OPTS="--no-checks -k $kver"
 MAKE_INITRD_VER="`make-initrd -V \
 	| sed -rn 's/^make-initrd version ([0-9.]+)/\1/p'`"
@@ -19,17 +22,16 @@ if [ "`rpmvercmp "$MAKE_INITRD_VER" "0.7.8"`" != "-1" ]; then
 	MAKE_INITRD_OPTS="$MAKE_INITRD_OPTS --no-depmod"
 fi
 
-[ -z "$GLOBAL_VERBOSE" ] || MAKE_INITRD_OPTS="$MAKE_INITRD_OPTS -v"
+[ -z "$GLOBAL_VERBOSE" ] ||
+	MAKE_INITRD_OPTS="$MAKE_INITRD_OPTS -v"
 
-if make-initrd $MAKE_INITRD_OPTS; then
-	pdir="$(getconf LIBDIR)/propagator"
-	mkdir -p "$pdir"
-	gzip < /boot/initrd-$kver.img > "$pdir"/initfs
-else
-	verbose "make-initrd failed"
-	exit 1
-fi
+make-initrd $MAKE_INITRD_OPTS ||
+	fatal "make-initrd failed"
+
+[ -h /boot/vmlinuz ] ||
+	ln -s vmlinuz-$kver /boot/vmlinuz
+
+[ -h /boot/initrd.img ] ||
+	ln -s initrd-$kver.img /boot/initrd.img
 
-[ -h /boot/vmlinuz ] || ln -s vmlinuz-$kver /boot/vmlinuz
-[ -h /boot/initrd.img ] || ln -s initrd-$kver.img /boot/initrd.img
 :

features.in/stage2/stage1/scripts.d/11-initrd-propagator

@@ -0,0 +1,7 @@
+#!/bin/sh
+# see also http://www.altlinux.org/Make-initrd-propagator
+
+echo 'FEATURES += propagator' >> /etc/initrd.mk
+
+# FIXME: #29705 workaround
+echo 'MODULES_PRELOAD += ahci' >> /etc/initrd.mk

features.in/stage2/stage1/scripts.d/81-make-initfs

@@ -0,0 +1,13 @@
+#!/bin/sh -efu
+# NB: initrd.mk carefully built by an earlier script
+
+verbose() { [ -z "$GLOBAL_VERBOSE" ] || echo "** 81-make-initfs: $@" >&2; }
+
+if [ -h /boot/initrd.img ]; then
+	pdir="$(getconf LIBDIR)/propagator"
+	mkdir -p "$pdir"
+	gzip < /boot/initrd.img > "$pdir"/initfs
+else
+	verbose "/boot/initrd.img missing"
+	exit 1
+fi