make.alpine: makefile to build alpine iso
tries to get correct dependencies for modloop, initramfs and iso so minimum amount of work is required for rebuild.
This commit is contained in:
Timo Teras
parent
0b2f41e9d9
commit
576541e3f2
128
initramfs-init
Executable file
128
initramfs-init
Executable file
@ -0,0 +1,128 @@
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#!/bin/ash
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VERSION=1.9.1-pre0
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NEWROOT=/newroot
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SINGLEMODE=no
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# basic environment
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export PATH=/usr/bin:/bin:/usr/sbin:/sbin
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# basic mounts
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mount -t proc -o noexec,nosuid,nodev proc /proc
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mount -t sysfs -o noexec,nosuid,nodev sysfs /sys
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# some helpers
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ebegin() {
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echo -n " * $*: "
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}
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eend() {
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local msg
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if [ "$1" = 0 ] || [ $# -lt 1 ] ; then
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echo "ok."
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else
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shift
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echo "failed. $*"
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echo "Emergency recovery shell started."
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exec /bin/busybox sh
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fi
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}
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scan_drivers() {
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if [ "$AUTODETECT" != no ] ; then
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find /sys -name modalias | xargs sort | while read a ; do
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modprobe $a 2>/dev/null \
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|| echo $a >> /tmp/hwdrivers.failed
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done
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fi
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}
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# gotta start from somewhere :)
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echo "Starting Alpine $VERSION"
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# read the kernel options
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for i in `cat /proc/cmdline` ; do
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case $i in
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s|single|1)
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SINGLEMODE=yes ;;
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modules=*)
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MODULES="`echo ${i#modules=} | tr ',' ' '`";;
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noautodetect)
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AUTODETECT=no;;
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*=*) eval KOPT_$i ;;
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*) eval KOPT_$i=yes ;;
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esac
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done
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ALPINE_DEV=${KOPT_alpine_dev%%:*}
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ALPINE_MNT=/media/$ALPINE_DEV
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# hide kernel messages
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dmesg -n 1
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# setup /dev
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ebegin "Starting mdev"
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mount -t tmpfs -o exec,nosuid,mode=0755 mdev /dev
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mknod -m 666 /dev/null c 1 3
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ln -s sr0 /dev/cdrom
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echo "/sbin/mdev" > /proc/sys/kernel/hotplug
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mdev -s
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RC=$?
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[ -d /dev/pts ] || mkdir -m 755 /dev/pts
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[ -c /dev/ptmx ] || mknod -m 666 /dev/ptmx c 5 2
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mount -t devpts -o gid=5,mode=0620,noexec,nosuid devpts /dev/pts
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[ -d /dev/shm ] || mkdir /dev/shm
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mount -t tmpfs -o nodev,nosuid,noexec shm /dev/shm
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eend $RC
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# load available drivers to get access to modloop media
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ebegin "Loading boot drivers"
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[ "$MODULES" ] && modprobe $MODULES 2> /dev/null
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scan_drivers
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scan_drivers
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eend 0
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# locate boot media and mount it
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ebegin "Mounting boot media"
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mount $ALPINE_MNT >/dev/null 2>&1
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eend $?
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ebegin "Mounting loopback device for kernel modules"
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modprobe loop
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mount -o loop,ro -t cramfs /media/$ALPINE_DEV/$(dirname ${KOPT_BOOT_IMAGE:-""})/modloop.cmg /.modloop
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rc=$?
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if [ "$rc" = 0 ]; then
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rm -rf /lib/modules
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ln -sf /.modloop/modules /lib
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fi
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if [ -d $ALPINE_MNT/firmware ]; then
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mkdir -p /lib/firmware
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cp -a $ALPINE_MNT/firmware/* /lib/firmware/
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fi
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eend $?
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# early console?
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if [ "$SINGLEMODE" = "yes" ]; then
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echo "Entering single mode. Type 'exit' to continue booting."
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sh
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fi
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# more drivers
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ebegin "Loading hardware drivers"
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scan_drivers
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eend 0
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# install new root
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ebegin "Installing packets to root filesystem"
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mount -t tmpfs -o size=50M tmpfs $NEWROOT
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apk create --root /newroot
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apk add --root /newroot --repository /media/cdrom/apks
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eend $?
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# switch over to new root
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cat /proc/mounts | while read DEV DIR TYPE OPTS ; do
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if [ "$DIR" != "/" -a "$DIR" != "$NEWROOT" -a -d "$DIR" ]; then
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mkdir -p $NEWROOT/$DIR
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mount -o move $DIR $NEWROOT/$DIR
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fi
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done
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sync
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exec /bin/busybox switch_root $NEWROOT /sbin/init $KOPT_init_args || exec /bin/busybox sh
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192
make.alpine
Normal file
192
make.alpine
Normal file
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#!/usr/bin/make -f
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ISO ?= alpine-test.iso
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DESTDIR ?= $(shell pwd)/isotmp
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APKDIRS ?= ../aports/core/*/
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ISO_DIR := $(DESTDIR)/isofs
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find_apk = $(firstword $(wildcard $(addprefix $(APKDIRS),$(1)-[0-9]*.apk)))
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KERNEL_APK := $(call find_apk,linux-grsec)
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MODULE_APK := $(wildcard $(subst /linux-grsec-,/linux-grsec-mod-,$(KERNEL_APK)))
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KERNEL := $(word 3,$(subst -, ,$(notdir $(KERNEL_APK))))-$(word 2,$(subst -, ,$(notdir $(KERNEL_APK))))
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ALPINEBASELAYOUT_APK := $(call find_apk,alpine-baselayout)
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UCLIBC_APK := $(call find_apk,uclibc)
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BUSYBOX_APK := $(call find_apk,busybox)
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APK_TOOLS_APK := $(call find_apk,apk-tools)
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SOURCE_APKS := $(wildcard $(APKDIRS)/*apk)
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APK_BIN := $(shell which apk)
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ifneq ($(words $(KERNEL_APK) $(MODULE_APK) $(ALPINEBASELAYOUT_APK) $(UCLIBC_APK) $(BUSYBOX_APK) $(APK_TOOLS_APK)),6)
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$(error I did not find all APKs which I need.)
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endif
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all: $(ISO)
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help:
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@echo "Alpine ISO builder"
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@echo
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@echo "Type 'make' to build $(ISO)"
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@echo
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@echo "I will use the following sources files:"
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@echo " 1. $(notdir $(KERNEL_APK)) (looks like $(KERNEL))"
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@echo " 2. $(notdir $(MODULE_APK))"
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@echo " 3. $(notdir $(ALPINEBASELAYOUT_APK))"
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@echo " 4. $(notdir $(UCLIBC_APK))"
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@echo " 5. $(notdir $(BUSYBOX_APK))"
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ifeq ($(APK_BIN),)
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@echo " 6. $(notdir $(APK_TOOLS_APK))"
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else
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@echo " 6. $(APK_BIN)"
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endif
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@echo
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#clean:
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# rm -rf $(DESTDIR)
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#
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# Modloop
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#
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MODLOOP := $(ISO_DIR)/boot/modloop.cmg
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MODLOOP_DIR := $(DESTDIR)/modloop
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MODLOOP_DIRSTAMP := $(DESTDIR)/stamp.modloop
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$(MODLOOP_DIRSTAMP): $(MODULE_APK)
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@echo "==> modloop: prepare modules $(notdir $(MODULE_APK))"
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@rm -rf $(MODLOOP_DIR)
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@mkdir -p $(MODLOOP_DIR)/lib/modules/
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@tar -C $(MODLOOP_DIR) -xzf $(MODULE_APK)
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@rm -rf $(addprefix $(MODLOOP_DIR)/lib/modules/*/, source build)
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@depmod $(KERNEL) -b $(MODLOOP_DIR)
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@touch $(MODLOOP_DIRSTAMP)
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$(MODLOOP): $(MODLOOP_DIRSTAMP)
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@echo "==> modloop: building image $(notdir $(MODLOOP))"
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@mkdir -p $(dir $(MODLOOP))
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@mkcramfs $(MODLOOP_DIR)/lib $(MODLOOP)
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#
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# Initramfs rules
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#
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INITFS := $(ISO_DIR)/boot/initramfs.gz
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INITFS_DIRSTAMP := $(DESTDIR)/stamp.initfs
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INITFS_DIR := $(DESTDIR)/initfs
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INITFS_MODDIR := $(INITFS_DIR)/lib/modules/$(KERNEL)
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INITFS_MODDIRSTAMP := $(DESTDIR)/stamp.initfs.modules
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INITFS_APKS := $(UCLIBC_APK) $(BUSYBOX_APK)
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INITFS_RAWBASEFILES := etc/mdev.conf etc/passwd etc/group etc/fstab
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INITFS_BASEFILES := $(addprefix $(INITFS_DIR)/, $(INITFS_RAWBASEFILES))
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$(INITFS_DIRSTAMP): $(INITFS_APKS)
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@echo "==> initramfs: prepare baselayout"
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@rm -rf $(INITFS_DIR)
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@mkdir -p $(addprefix $(INITFS_DIR)/, \
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dev proc sys sbin bin .modloop lib/modules \
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media/cdrom media/floppy media/usb \
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newroot/proc newroot/sys)
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@for apk in $(INITFS_APKS) ; do \
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tar -C $(INITFS_DIR) -xzf $$apk ; \
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done
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@rm -f "$(INITFS_DIR)/.PKGINFO"
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@mknod $(INITFS_DIR)/dev/null c 1 3
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@touch $(INITFS_DIRSTAMP)
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$(INITFS_BASEFILES): $(INITFS_DIRSTAMP) $(ALPINEBASELAYOUT_APK)
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@echo "==> initramfs: $(notdir $(ALPINEBASELAYOUT_APK))"
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@tar -C $(INITFS_DIR) -xzf $(ALPINEBASELAYOUT_APK) $(INITFS_RAWBASEFILES)
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@touch $(INITFS_BASEFILES)
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$(INITFS_DIR)/init: initramfs-init $(INITFS_DIRSTAMP)
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@echo "==> initramfs: init script"
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@cp initramfs-init "$(INITFS_DIR)/init"
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ifeq ($(APK_BIN),)
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$(INITFS_DIR)/sbin/apk: $(APK_TOOLS_APK) $(INITFS_DIRSTAMP)
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@echo "==> initramfs: $(notdir $(APK_TOOLS_APK))"
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@tar -C $(INITFS_DIR) -xzf $(APK_TOOLS_APK) sbin/apk
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else
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$(INITFS_DIR)/sbin/apk: $(APK_BIN) $(INITFS_DIRSTAMP)
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@echo "==> initramfs: copy $(APK_BIN) from buildroot"
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@cp $(APK_BIN) "$(INITFS_DIR)/sbin"
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endif
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$(INITFS_MODDIRSTAMP): $(INITFS_DIRSTAMP) $(INITFS_MODFILES) $(MODLOOP_DIRSTAMP)
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@echo "==> initramfs: $(notdir $(MODULE_APK))"
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@rm -rf $(INITFS_DIR)/lib/modules
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@mkdir -p $(addprefix $(INITFS_MODDIR)/kernel/,drivers fs)
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@for i in acpi ata block ide scsi cdrom usb message hid; do \
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cp -flLpR $(MODLOOP_DIR)/lib/modules/*/kernel/drivers/$$i \
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$(INITFS_MODDIR)/kernel/drivers/ ; \
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done
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@for i in isofs vfat nls ext2 cramfs '*.ko'; do \
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cp -flLpR $(MODLOOP_DIR)/lib/modules/*/kernel/fs/$$i \
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$(INITFS_MODDIR)/kernel/fs/ ; \
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done
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@cp -flLpR $(MODLOOP_DIR)/lib/modules/*/kernel/lib \
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$(INITFS_MODDIR)/kernel/
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@depmod $(KERNEL) -b $(INITFS_DIR)
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@touch $(INITFS_MODDIRSTAMP)
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$(INITFS): $(INITFS_DIRSTAMP) $(INITFS_DIR)/init $(INITFS_DIR)/sbin/apk $(INITFS_MODDIRSTAMP) $(INITFS_BASEFILES)
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@echo "==> initramfs: creating $(notdir $(INITFS))"
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@(cd $(INITFS_DIR) && find . | cpio -o -H newc | gzip -9) > $(INITFS)
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#
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# ISO rules
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#
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ISOLINUX := $(ISO_DIR)/isolinux
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ISOLINUX_BIN := $(ISOLINUX)/isolinux.bin
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ISOLINUX_CFG := $(ISOLINUX)/isolinux.cfg
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$(ISOLINUX_BIN): /usr/share/syslinux/isolinux.bin
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@echo "==> iso: install isolinux"
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@mkdir -p $(dir $(ISOLINUX_BIN))
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@cp /usr/share/syslinux/isolinux.bin $(ISOLINUX_BIN)
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$(ISOLINUX_CFG):
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@echo "==> iso: configure isolinux"
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@mkdir -p $(dir $(ISOLINUX_BIN))
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@echo "timeout 20" >$(ISOLINUX_CFG)
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@echo "prompt 1" >>$(ISOLINUX_CFG)
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@echo "default linux" >>$(ISOLINUX_CFG)
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@echo "label linux" >>$(ISOLINUX_CFG)
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@echo " kernel /boot/vmlinuz" >>$(ISOLINUX_CFG)
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@echo " append initrd=/boot/initramfs.gz alpine_dev=cdrom quiet" >>$(ISOLINUX_CFG)
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ISO_KERNEL := $(ISO_DIR)/boot/vmlinuz
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ISO_APKS := $(ISO_DIR)/apks
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ISO_APKINDEX := $(ISO_APKS)/APK_INDEX.gz
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$(ISO_APKS): $(SOURCE_APKS)
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@echo "==> iso: prepare APK repository"
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@rm -rf $(ISO_APKS)
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@mkdir -p $(ISO_APKS)
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@for a in $(SOURCE_APKS) ; do \
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ln -f $$a $(ISO_APKS) 2>/dev/null || cp $$a $(ISO_APKS) ; \
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done
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@apk index $(SOURCE_APKS) | gzip -9 > $(ISO_APKINDEX)
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$(ISO_KERNEL): $(KERNEL_APK)
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@echo "==> iso: install kernel $(KERNEL)"
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@mkdir -p $(dir $(ISO_KERNEL))
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@tar -C $(ISO_DIR) -xzf $(KERNEL_APK) boot/vmlinuz boot/System.map
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@touch $(ISO_KERNEL)
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$(ISO): $(MODLOOP) $(INITFS) $(ISOLINUX_CFG) $(ISOLINUX_BIN) $(ISO_KERNEL) $(ISO_APKS)
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@echo "==> iso: building $(notdir $(ISO))"
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@genisoimage -o $(ISO) -l -J -R \
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-b isolinux/isolinux.bin \
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-c isolinux/boot.cat \
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-no-emul-boot \
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-boot-load-size 4 \
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-boot-info-table \
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-quiet \
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$(ISO_DIR)
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