diff options
| -rwxr-xr-x | initramfs-init | 128 | ||||
| -rw-r--r-- | make.alpine | 192 |
2 files changed, 320 insertions, 0 deletions
diff --git a/initramfs-init b/initramfs-init new file mode 100755 index 0000000..15c41b8 --- /dev/null +++ b/initramfs-init @@ -0,0 +1,128 @@ +#!/bin/ash + +VERSION=1.9.1-pre0 +NEWROOT=/newroot +SINGLEMODE=no + +# basic environment +export PATH=/usr/bin:/bin:/usr/sbin:/sbin + +# basic mounts +mount -t proc -o noexec,nosuid,nodev proc /proc +mount -t sysfs -o noexec,nosuid,nodev sysfs /sys + +# some helpers +ebegin() { + echo -n " * $*: " +} +eend() { + local msg + if [ "$1" = 0 ] || [ $# -lt 1 ] ; then + echo "ok." + else + shift + echo "failed. $*" + echo "Emergency recovery shell started." + exec /bin/busybox sh + fi +} + +scan_drivers() { + if [ "$AUTODETECT" != no ] ; then + find /sys -name modalias | xargs sort | while read a ; do + modprobe $a 2>/dev/null \ + || echo $a >> /tmp/hwdrivers.failed + done + fi +} + +# gotta start from somewhere :) +echo "Starting Alpine $VERSION" + +# read the kernel options +for i in `cat /proc/cmdline` ; do + case $i in + s|single|1) + SINGLEMODE=yes ;; + modules=*) + MODULES="`echo ${i#modules=} | tr ',' ' '`";; + noautodetect) + AUTODETECT=no;; + *=*) eval KOPT_$i ;; + *) eval KOPT_$i=yes ;; + esac +done + +ALPINE_DEV=${KOPT_alpine_dev%%:*} +ALPINE_MNT=/media/$ALPINE_DEV + +# hide kernel messages +dmesg -n 1 + +# setup /dev +ebegin "Starting mdev" +mount -t tmpfs -o exec,nosuid,mode=0755 mdev /dev +mknod -m 666 /dev/null c 1 3 +ln -s sr0 /dev/cdrom +echo "/sbin/mdev" > /proc/sys/kernel/hotplug +mdev -s +RC=$? +[ -d /dev/pts ] || mkdir -m 755 /dev/pts +[ -c /dev/ptmx ] || mknod -m 666 /dev/ptmx c 5 2 +mount -t devpts -o gid=5,mode=0620,noexec,nosuid devpts /dev/pts +[ -d /dev/shm ] || mkdir /dev/shm +mount -t tmpfs -o nodev,nosuid,noexec shm /dev/shm +eend $RC + +# load available drivers to get access to modloop media +ebegin "Loading boot drivers" +[ "$MODULES" ] && modprobe $MODULES 2> /dev/null +scan_drivers +scan_drivers +eend 0 + +# locate boot media and mount it +ebegin "Mounting boot media" +mount $ALPINE_MNT >/dev/null 2>&1 +eend $? +ebegin "Mounting loopback device for kernel modules" +modprobe loop +mount -o loop,ro -t cramfs /media/$ALPINE_DEV/$(dirname ${KOPT_BOOT_IMAGE:-""})/modloop.cmg /.modloop +rc=$? +if [ "$rc" = 0 ]; then + rm -rf /lib/modules + ln -sf /.modloop/modules /lib +fi +if [ -d $ALPINE_MNT/firmware ]; then + mkdir -p /lib/firmware + cp -a $ALPINE_MNT/firmware/* /lib/firmware/ +fi +eend $? + +# early console? +if [ "$SINGLEMODE" = "yes" ]; then + echo "Entering single mode. Type 'exit' to continue booting." + sh +fi + +# more drivers +ebegin "Loading hardware drivers" +scan_drivers +eend 0 + +# install new root +ebegin "Installing packets to root filesystem" +mount -t tmpfs -o size=50M tmpfs $NEWROOT +apk create --root /newroot +apk add --root /newroot --repository /media/cdrom/apks +eend $? + +# switch over to new root +cat /proc/mounts | while read DEV DIR TYPE OPTS ; do + if [ "$DIR" != "/" -a "$DIR" != "$NEWROOT" -a -d "$DIR" ]; then + mkdir -p $NEWROOT/$DIR + mount -o move $DIR $NEWROOT/$DIR + fi +done +sync +exec /bin/busybox switch_root $NEWROOT /sbin/init $KOPT_init_args || exec /bin/busybox sh diff --git a/make.alpine b/make.alpine new file mode 100644 index 0000000..0438f3b --- /dev/null +++ b/make.alpine @@ -0,0 +1,192 @@ +#!/usr/bin/make -f + +ISO ?= alpine-test.iso +DESTDIR ?= $(shell pwd)/isotmp +APKDIRS ?= ../aports/core/*/ + +ISO_DIR := $(DESTDIR)/isofs + +find_apk = $(firstword $(wildcard $(addprefix $(APKDIRS),$(1)-[0-9]*.apk))) + +KERNEL_APK := $(call find_apk,linux-grsec) +MODULE_APK := $(wildcard $(subst /linux-grsec-,/linux-grsec-mod-,$(KERNEL_APK))) +KERNEL := $(word 3,$(subst -, ,$(notdir $(KERNEL_APK))))-$(word 2,$(subst -, ,$(notdir $(KERNEL_APK)))) + +ALPINEBASELAYOUT_APK := $(call find_apk,alpine-baselayout) +UCLIBC_APK := $(call find_apk,uclibc) +BUSYBOX_APK := $(call find_apk,busybox) +APK_TOOLS_APK := $(call find_apk,apk-tools) + +SOURCE_APKS := $(wildcard $(APKDIRS)/*apk) +APK_BIN := $(shell which apk) + +ifneq ($(words $(KERNEL_APK) $(MODULE_APK) $(ALPINEBASELAYOUT_APK) $(UCLIBC_APK) $(BUSYBOX_APK) $(APK_TOOLS_APK)),6) +$(error I did not find all APKs which I need.) +endif + +all: $(ISO) + +help: + @echo "Alpine ISO builder" + @echo + @echo "Type 'make' to build $(ISO)" + @echo + @echo "I will use the following sources files:" + @echo " 1. $(notdir $(KERNEL_APK)) (looks like $(KERNEL))" + @echo " 2. $(notdir $(MODULE_APK))" + @echo " 3. $(notdir $(ALPINEBASELAYOUT_APK))" + @echo " 4. $(notdir $(UCLIBC_APK))" + @echo " 5. $(notdir $(BUSYBOX_APK))" +ifeq ($(APK_BIN),) + @echo " 6. $(notdir $(APK_TOOLS_APK))" +else + @echo " 6. $(APK_BIN)" +endif + @echo + +#clean: +# rm -rf $(DESTDIR) + +# +# Modloop +# +MODLOOP := $(ISO_DIR)/boot/modloop.cmg +MODLOOP_DIR := $(DESTDIR)/modloop +MODLOOP_DIRSTAMP := $(DESTDIR)/stamp.modloop + +$(MODLOOP_DIRSTAMP): $(MODULE_APK) + @echo "==> modloop: prepare modules $(notdir $(MODULE_APK))" + @rm -rf $(MODLOOP_DIR) + @mkdir -p $(MODLOOP_DIR)/lib/modules/ + @tar -C $(MODLOOP_DIR) -xzf $(MODULE_APK) + @rm -rf $(addprefix $(MODLOOP_DIR)/lib/modules/*/, source build) + @depmod $(KERNEL) -b $(MODLOOP_DIR) + @touch $(MODLOOP_DIRSTAMP) + +$(MODLOOP): $(MODLOOP_DIRSTAMP) + @echo "==> modloop: building image $(notdir $(MODLOOP))" + @mkdir -p $(dir $(MODLOOP)) + @mkcramfs $(MODLOOP_DIR)/lib $(MODLOOP) + +# +# Initramfs rules +# + +INITFS := $(ISO_DIR)/boot/initramfs.gz + +INITFS_DIRSTAMP := $(DESTDIR)/stamp.initfs +INITFS_DIR := $(DESTDIR)/initfs +INITFS_MODDIR := $(INITFS_DIR)/lib/modules/$(KERNEL) +INITFS_MODDIRSTAMP := $(DESTDIR)/stamp.initfs.modules + +INITFS_APKS := $(UCLIBC_APK) $(BUSYBOX_APK) +INITFS_RAWBASEFILES := etc/mdev.conf etc/passwd etc/group etc/fstab +INITFS_BASEFILES := $(addprefix $(INITFS_DIR)/, $(INITFS_RAWBASEFILES)) + +$(INITFS_DIRSTAMP): $(INITFS_APKS) + @echo "==> initramfs: prepare baselayout" + @rm -rf $(INITFS_DIR) + @mkdir -p $(addprefix $(INITFS_DIR)/, \ + dev proc sys sbin bin .modloop lib/modules \ + media/cdrom media/floppy media/usb \ + newroot/proc newroot/sys) + @for apk in $(INITFS_APKS) ; do \ + tar -C $(INITFS_DIR) -xzf $$apk ; \ + done + @rm -f "$(INITFS_DIR)/.PKGINFO" + @mknod $(INITFS_DIR)/dev/null c 1 3 + @touch $(INITFS_DIRSTAMP) + +$(INITFS_BASEFILES): $(INITFS_DIRSTAMP) $(ALPINEBASELAYOUT_APK) + @echo "==> initramfs: $(notdir $(ALPINEBASELAYOUT_APK))" + @tar -C $(INITFS_DIR) -xzf $(ALPINEBASELAYOUT_APK) $(INITFS_RAWBASEFILES) + @touch $(INITFS_BASEFILES) + +$(INITFS_DIR)/init: initramfs-init $(INITFS_DIRSTAMP) + @echo "==> initramfs: init script" + @cp initramfs-init "$(INITFS_DIR)/init" + +ifeq ($(APK_BIN),) +$(INITFS_DIR)/sbin/apk: $(APK_TOOLS_APK) $(INITFS_DIRSTAMP) + @echo "==> initramfs: $(notdir $(APK_TOOLS_APK))" + @tar -C $(INITFS_DIR) -xzf $(APK_TOOLS_APK) sbin/apk +else +$(INITFS_DIR)/sbin/apk: $(APK_BIN) $(INITFS_DIRSTAMP) + @echo "==> initramfs: copy $(APK_BIN) from buildroot" + @cp $(APK_BIN) "$(INITFS_DIR)/sbin" +endif + +$(INITFS_MODDIRSTAMP): $(INITFS_DIRSTAMP) $(INITFS_MODFILES) $(MODLOOP_DIRSTAMP) + @echo "==> initramfs: $(notdir $(MODULE_APK))" + @rm -rf $(INITFS_DIR)/lib/modules + @mkdir -p $(addprefix $(INITFS_MODDIR)/kernel/,drivers fs) + @for i in acpi ata block ide scsi cdrom usb message hid; do \ + cp -flLpR $(MODLOOP_DIR)/lib/modules/*/kernel/drivers/$$i \ + $(INITFS_MODDIR)/kernel/drivers/ ; \ + done + @for i in isofs vfat nls ext2 cramfs '*.ko'; do \ + cp -flLpR $(MODLOOP_DIR)/lib/modules/*/kernel/fs/$$i \ + $(INITFS_MODDIR)/kernel/fs/ ; \ + done + @cp -flLpR $(MODLOOP_DIR)/lib/modules/*/kernel/lib \ + $(INITFS_MODDIR)/kernel/ + @depmod $(KERNEL) -b $(INITFS_DIR) + @touch $(INITFS_MODDIRSTAMP) + +$(INITFS): $(INITFS_DIRSTAMP) $(INITFS_DIR)/init $(INITFS_DIR)/sbin/apk $(INITFS_MODDIRSTAMP) $(INITFS_BASEFILES) + @echo "==> initramfs: creating $(notdir $(INITFS))" + @(cd $(INITFS_DIR) && find . | cpio -o -H newc | gzip -9) > $(INITFS) + +# +# ISO rules +# + +ISOLINUX := $(ISO_DIR)/isolinux +ISOLINUX_BIN := $(ISOLINUX)/isolinux.bin +ISOLINUX_CFG := $(ISOLINUX)/isolinux.cfg + +$(ISOLINUX_BIN): /usr/share/syslinux/isolinux.bin + @echo "==> iso: install isolinux" + @mkdir -p $(dir $(ISOLINUX_BIN)) + @cp /usr/share/syslinux/isolinux.bin $(ISOLINUX_BIN) + +$(ISOLINUX_CFG): + @echo "==> iso: configure isolinux" + @mkdir -p $(dir $(ISOLINUX_BIN)) + @echo "timeout 20" >$(ISOLINUX_CFG) + @echo "prompt 1" >>$(ISOLINUX_CFG) + @echo "default linux" >>$(ISOLINUX_CFG) + @echo "label linux" >>$(ISOLINUX_CFG) + @echo " kernel /boot/vmlinuz" >>$(ISOLINUX_CFG) + @echo " append initrd=/boot/initramfs.gz alpine_dev=cdrom quiet" >>$(ISOLINUX_CFG) + +ISO_KERNEL := $(ISO_DIR)/boot/vmlinuz +ISO_APKS := $(ISO_DIR)/apks +ISO_APKINDEX := $(ISO_APKS)/APK_INDEX.gz + +$(ISO_APKS): $(SOURCE_APKS) + @echo "==> iso: prepare APK repository" + @rm -rf $(ISO_APKS) + @mkdir -p $(ISO_APKS) + @for a in $(SOURCE_APKS) ; do \ + ln -f $$a $(ISO_APKS) 2>/dev/null || cp $$a $(ISO_APKS) ; \ + done + @apk index $(SOURCE_APKS) | gzip -9 > $(ISO_APKINDEX) + +$(ISO_KERNEL): $(KERNEL_APK) + @echo "==> iso: install kernel $(KERNEL)" + @mkdir -p $(dir $(ISO_KERNEL)) + @tar -C $(ISO_DIR) -xzf $(KERNEL_APK) boot/vmlinuz boot/System.map + @touch $(ISO_KERNEL) + +$(ISO): $(MODLOOP) $(INITFS) $(ISOLINUX_CFG) $(ISOLINUX_BIN) $(ISO_KERNEL) $(ISO_APKS) + @echo "==> iso: building $(notdir $(ISO))" + @genisoimage -o $(ISO) -l -J -R \ + -b isolinux/isolinux.bin \ + -c isolinux/boot.cat \ + -no-emul-boot \ + -boot-load-size 4 \ + -boot-info-table \ + -quiet \ + $(ISO_DIR) + |