diff options
-rw-r--r-- | Makefile | 36 | ||||
-rw-r--r-- | files.d/base | 11 | ||||
-rw-r--r-- | files.d/bootchart | 8 | ||||
-rwxr-xr-x | initramfs-init | 308 | ||||
-rwxr-xr-x | mkinitfs | 179 | ||||
-rw-r--r-- | modules.d/ata | 1 | ||||
-rw-r--r-- | modules.d/base | 1 | ||||
-rw-r--r-- | modules.d/cdrom | 2 | ||||
-rw-r--r-- | modules.d/cramfs | 1 | ||||
-rw-r--r-- | modules.d/ide | 1 | ||||
-rw-r--r-- | modules.d/raid | 1 | ||||
-rw-r--r-- | modules.d/scsi | 2 | ||||
-rw-r--r-- | modules.d/usb | 3 |
13 files changed, 554 insertions, 0 deletions
diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..4693de6 --- /dev/null +++ b/Makefile @@ -0,0 +1,36 @@ + +VERSION := 1.1 + + +SBIN_FILES := mkinitfs bootchartd +SHARE_FILES := initramfs-init +CONF_FILES := mkinitfs.conf \ + modules.d/ata \ + modules.d/ide \ + modules.d/base \ + modules.d/raid \ + modules.d/scsi \ + modules.d/cdrom \ + modules.d/usb \ + modules.d/cramfs \ + files.d/bootchart \ + files.d/base + +DISTFILES := $(SBIN_FILES) $(CONF_FILES) $(SHARE_FILES) Makefile + +INSTALL := install + +help: + @echo "usage: make install [DESTDIR=]" + +install: + for i in $(SBIN_FILES); do \ + $(INSTALL) -Dm755 $$i $(DESTDIR)/sbin/$$i || exit 1;\ + done + for i in $(CONF_FILES); do \ + $(INSTALL) -Dm644 $$i $(DESTDIR)/etc/mkinitfs/$$i || exit 1;\ + done + for i in $(SHARE_FILES); do \ + $(INSTALL) -D $$i $(DESTDIR)/usr/share/mkinitfs/$$i || exit 1;\ + done + diff --git a/files.d/base b/files.d/base new file mode 100644 index 0000000..68aa20e --- /dev/null +++ b/files.d/base @@ -0,0 +1,11 @@ +/bin/busybox +/bin/sh +/lib/libcrypt-[0-9]* +/lib/libcrypt.so.* +/lib/libm-[0-9]* +/lib/libm.so.* +/lib/libuClibc-[0-9]* +/lib/libc.so.* +/lib/ld-uClibc-[0-9]* +/lib/ld-uClibc.so* +/lib/mdev diff --git a/files.d/bootchart b/files.d/bootchart new file mode 100644 index 0000000..8adf4df --- /dev/null +++ b/files.d/bootchart @@ -0,0 +1,8 @@ +/usr/bin/ac +/usr/bin/last +/usr/bin/lastcomm +/usr/sbin/dump-utmp +/usr/sbin/dump-acct +/usr/sbin/accton +/usr/sbin/sa + diff --git a/initramfs-init b/initramfs-init new file mode 100755 index 0000000..d9a9d68 --- /dev/null +++ b/initramfs-init @@ -0,0 +1,308 @@ +#!/bin/busybox sh + +# this is the init script version +VERSION=1.1 +NEWROOT=/newroot +SINGLEMODE=no + +/bin/busybox --install -s + +# basic environment +export PATH=/usr/bin:/bin:/usr/sbin:/sbin + +# needed devs +[ -c /dev/null ] || mknod -m 666 /dev/null c 1 3 + +# 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. $*" + echo "initramfs emergency recovery shell launched. Type 'exit' to continue boot" + /bin/busybox sh + fi +} + +scan_drivers() { + if [ "$AUTODETECT" != no ] ; then + find /sys -name modalias | xargs sort -u | xargs modprobe -a 2> /dev/null + fi +} + +find_ovl() { + local mnt="$1" + local ovl + local lines + + # look for apkovl's on mounted media + ovl=$( ls -1 "$mnt"/*.apkovl.tar.gz* 2>/dev/null ) || return 1 + lines=$(echo "$ovl" | wc -l) + + if [ $lines -gt 1 ] ; then + echo "ERROR: More than one apkovl file was found on $(basename $mnt). None will be read." >&2 + return 1 + fi + echo "$ovl" +} + +retry_mount() { + # usb might need some time to settle so we retry a few times + for i in $(seq 0 19); do + mount $@ 2>&1 && return 0 + sleep 1 + done + return 1 +} + +unpack_apkovl() { + local ovl="$1" + local dest="$2" + local suffix=${ovl##*.} + local i + if [ "$suffix" = "gz" ]; then + tar -C "$dest" -zxf "$ovl" + return $? + fi + + for i in $ALPINE_MNT/*/*/openssl-[0-9]*.apk $ALPINE_MNT/*/openssl-[0-9]*.apk; do + [ -f "$i" ] && tar --numeric-owner -C / -zxf $i && break + done + + if ! openssl list-cipher-commands | grep "^$suffix$" > /dev/null; then + errstr="Cipher $suffix is not supported" + return 1 + fi + local count=0 + # beep + echo -e "\007" + while [ $count -lt 3 ]; do + openssl enc -d -$suffix -in "$ovl" | tar --numeric-owner \ + -C "$dest" -zx 2>/dev/null && return 0 + count=$(( $count + 1 )) + done + return 1 +} + +# gotta start from somewhere :) +echo "Alpine Init $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_$i=yes ;; + esac +done + +# start bootcharting if wanted +if [ -n "$KOPT_chart" ]; then + ebegin "Starting bootchart logging" + /sbin/bootchartd start-initfs "$NEWROOT" + eend 0 +fi + +ALPINE_DEV=${KOPT_alpine_dev%%:*} +ALPINE_DEV_FS=${KOPT_alpine_dev##*:} +if [ "$ALPINE_DEV_FS" = "$ALPINE_DEV" ]; then + unset ALPINE_DEV_FS +fi +ALPINE_MNT=/media/$ALPINE_DEV + +# hide kernel messages +dmesg -n 1 + +# setup /dev +ebegin "Starting mdev" +mount -t tmpfs -o exec,nosuid,mode=0755 mdev /dev +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 -a $MODULES 2> /dev/null +if [ -f /etc/modules ] ; then + sed 's/\#.*//g' < /etc/modules | + while read module args; do + modprobe -q $module $args + done +fi +scan_drivers +scan_drivers +eend 0 + +# check if root=... was set +if [ -n "$KOPT_root" ]; then + if [ "$SINGLEMODE" = "yes" ]; then + echo "Entering single mode. Type 'exit' to continue booting." + sh + fi + case "$KOPT_root" in + /dev/md*) + mknod $KOPT_root b 9 ${KOPT_root#/dev/md} + raidautorun "$KOPT_root" + ;; + esac + ebegin "Mounting root" + retry_mount $KOPT_root $NEWROOT 2>/dev/null + eend $? + cat /proc/mounts | while read DEV DIR TYPE OPTS ; do + if [ "$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 $chart_init /sbin/init $KOPT_init_args + echo "initramfs emergency recovery shell launched" + exec /bin/busybox sh +fi + +# locate boot media and mount it +ebegin "Mounting boot media" +mkdir -p $ALPINE_MNT +if [ -n "$ALPINE_DEV_FS" ]; then + mount_opts="-t $ALPINE_DEV_FS" +fi + +retry_mount $mount_opts /dev/$ALPINE_DEV $ALPINE_MNT >/dev/null 2>&1 +eend $? + +ebegin "Mounting loopback device for kernel modules" +modprobe loop +if [ -n "$KOPT_modloop" ]; then + modloop=$KOPT_modloop +else + modloop=$KOPT_BOOT_IMAGE.cmg +fi +mount -o loop,ro -t cramfs $ALPINE_MNT/$modloop /.modloop +rc=$? +if [ "$rc" = 0 ]; then + rm -rf /lib/modules + ln -sf /.modloop/modules /lib +fi +eend $? + +if [ -d $ALPINE_MNT/firmware ]; then + ebegin "Copying firmware from $ALPINE_MNT/firmware" + mkdir -p /lib + cp -R -a $ALPINE_MNT/firmware /lib/ + eend $? +fi + +mkdir -p /etc/apk +for i in $ALPINE_MNT/*/APK_INDEX.gz $ALPINE_MNT/*/*/APK_INDEX.gz; do + [ -r "$i" ] && echo ${i%/APK_INDEX.gz} >> /etc/apk/repositories +done + +# early console? +if [ "$SINGLEMODE" = "yes" ]; then + echo "Entering single mode. Type 'exit' to continue booting." + sh +fi + +# more drivers +ebegin "Loading hardware drivers" +scan_drivers +eend 0 + +mount -t tmpfs tmpfs $NEWROOT + +# look for apkovl +if dmesg | grep '^usb-storage: waiting' >/dev/null; then + ebegin "Waiting for USB device to settle" + while ! dmesg | grep 'usb-storage: device scan complete' >/dev/null; do + sleep 1 + done + eend 0 +fi +for i in usb floppy cdrom; do + mount /media/$i 2>/dev/null || continue + ovl=$(find_ovl /media/$i) + [ -f "$ovl" ] && break + umount /media/$i 2>/dev/null +done +if ! [ -f "$ovl" ]; then + ovl=$(find_ovl $ALPINE_MNT) +fi + +if [ -f "$ovl" ]; then + ebegin "Loading user settings from $ovl" + unpack_apkovl "$ovl" $NEWROOT + eend $? $errstr + umount /media/$i 2>/dev/null & + pkgs=$(sed 's/\#.*//' $NEWROOT/etc/lbu/packages.list 2>/dev/null) +fi + +# hack so we get openrc +pkgs="$pkgs openrc" + +# install new root +ebegin "Installing packages to root filesystem" +if [ -n "$KOPT_chart" ]; then + pkgs="$pkgs acct" +fi +apkflags="--initdb --quiet --progress --force" +if [ -z "$KOPT_keep_apk_new" ]; then + apkflags="$apkflags --clean-protected" +fi +apk add --root /newroot $apkflags $pkgs >/dev/null +eend $? + +# copy alpine release info +cp $ALPINE_MNT/.alpine-release $NEWROOT/ +ln -sf /.alpine-release $NEWROOT/etc/alpine-release + +# if there is no repositories file, then use the default +if ! [ -f $NEWROOT/etc/apk/repositories ]; then + cp /etc/apk/repositories $NEWROOT/etc/apk/repositories +fi + +# setup bootchart for switch_root +chart_init="" +if [ -n "$KOPT_chart" ]; then + /sbin/bootchartd stop-initfs "$NEWROOT" + chart_init="/sbin/bootchartd start-rootfs" +fi + +# switch over to new root +cat /proc/mounts | while read DEV DIR TYPE OPTS ; do + if [ "$DIR" != "/" -a "$DIR" != "$NEWROOT" -a -d "$DIR" ]; then + mkdir -p $NEWROOT/$DIR + mount -o move $DIR $NEWROOT/$DIR + fi +done +ln -sf /.modloop/modules $NEWROOT/lib/modules +sync + +echo "" +if [ -x $NEWROOT/sbin/init ]; then + exec /bin/busybox switch_root $NEWROOT $chart_init /sbin/init $KOPT_init_args +fi + +echo "initramfs emergency recovery shell launched" +exec /bin/busybox sh +reboot diff --git a/mkinitfs b/mkinitfs new file mode 100755 index 0000000..67b97f2 --- /dev/null +++ b/mkinitfs @@ -0,0 +1,179 @@ +#!/bin/sh + +_cp() { + local i + for i in "$@"; do + local dest="$tmpdir"/${i%/*} + mkdir -p "$dest" + cp -flLpR "$i" "$dest" 2>/dev/null || cp -pR "$i" "$dest" + done +} + +feature_files() { + local dir="$1" + local glob file + for f in $features; do + if [ ! -f "$dir/$f" ]; then + continue + fi + for glob in $(cat "$dir/$f"); do + for file in $glob; do + echo $glob + done + done + done +} + +initfs_base() { + local i= dirs= glob= file= + echo "==> initramfs: copying base files" >&2 + for i in dev proc sys sbin bin .modloop lib/modules media/cdrom \ + media/floppy media/usb newroot; do + dirs="$dirs $tmpdir/$i" + done + mkdir -p $dirs + + for file in $(feature_files "$filelists_dir"); do + _cp $file + done + + # copy init + cd $startdir + install -m755 "$init" "$tmpdir"/init +} + +find_kmod_deps() { + awk ' +function recursedeps(k, j) { + if (k in visited) + return; + visited[k] = 1; + split(deps[k], dep, " "); + for (j in dep) + recursedeps(dep[j]); + print(k); +} + +BEGIN { + if (modulesdep == "") + modulesdep="modules.dep"; + FS = ": "; + while ( (getline < modulesdep) > 0) { + deps[$1] = $2; + } +} + +{ + mod["/"$0] = 1; +} + +END { + for (i in mod) + recursedeps(i); +}' -v modulesdep="$basedir/lib/modules/$kernel/modules.dep" +} + +initfs_kmods() { + local glob= file= files= dirs= + rm -rf "$tmpdir"/lib/modules + cd "$kerneldir" || return 1 + echo "==> initramfs: copying kernel $kernel modules" >&2 + files=$( + for file in $(feature_files $modulelists_dir); do + if ! [ -e ${file} ]; then + echo "$file: No such file or directory" >&2 + continue + fi + echo $file + done | find_kmod_deps) + for file in $files; do + _cp "$basedir"/lib/modules/$kernel/$file + done +} + +initfs_cpio() { + echo "==> initramfs: creating $outfile" >&2 + (cd "$tmpdir" && find . | cpio -o -H newc | gzip) > $outfile +} + +usage() { + cat <<EOF +usage: mkinitfs [-hkL] [-b basedir] [-c configfile] [-i initfile ] + [-o outfile] [-t tempdir] [kernelversion]" +options: + -b prefix files and kernel modules with basedir + -c use configfile instead of $config + -h print this help + -i use initfile as init instead of $init + -k keep tempdir + -L list available features + -o set another outfile + -t use tempdir when creating initramfs image + +EOF + exit 1 +} + +# main + +startdir=$PWD +config=/etc/mkinitfs/mkinitfs.conf +init=/usr/share/mkinitfs/initramfs-init + +while getopts "b:c:hi:kLo:t:" opt; do + case "$opt" in + b) basedir="$OPTARG";; + c) config="$OPTARG";; + h) usage;; + i) init=$OPTARG;; + k) keeptmp=1;; + L) list_features=1;; + o) outfile="$OPTARG";; + t) tmpdir="$OPTARG";; + *) usage;; + esac +done +shift $(( $OPTIND - 1 )) + +. "$config" +filelists_dir=${filelists_dir:-"/etc/mkinitfs/files.d"} +modulelists_dir=${modules_dir:-"/etc/mkinitfs/modules.d"} + +if [ -n "$list_features" ]; then + for i in $filelists_dir $modulelists_dir; do + ( [ -d "$i" ] && cd $i && ls ) + done | sort | uniq + exit 0 +fi + +[ -n "$1" ] && kernel="$1" +[ -z "$kernel" ] && kernel=$(uname -r) +kerneldir="$basedir/lib/modules/$kernel" +if [ -z "$outfile" ]; then + outfile="$basedir"/boot/${kernel##*-}.gz +fi + +if [ ! -d "$kerneldir" ]; then + echo "$kerneldir does not exist or is not a directory" + exit 1 +fi + +if [ -z "$tmpdir" ]; then + tmpdir=$(mktemp -d /tmp/mkinitfs.XXXXXX) +else + mkdir -p "$tmpdir" +fi + +if [ -z "$keeptmp" ]; then + [ -d "$tmpdir" ] && rm -rf "$tmpdir"/* +fi + +initfs_base +initfs_kmods +initfs_cpio + +# cleanup +if [ -z "$keeptmp" ]; then + [ -d "$tmpdir" ] && rm -rf "$tmpdir" +fi + diff --git a/modules.d/ata b/modules.d/ata new file mode 100644 index 0000000..2a68a98 --- /dev/null +++ b/modules.d/ata @@ -0,0 +1 @@ +kernel/drivers/ata/*.ko diff --git a/modules.d/base b/modules.d/base new file mode 100644 index 0000000..9d39ba0 --- /dev/null +++ b/modules.d/base @@ -0,0 +1 @@ +kernel/drivers/hid/* diff --git a/modules.d/cdrom b/modules.d/cdrom new file mode 100644 index 0000000..038c4a2 --- /dev/null +++ b/modules.d/cdrom @@ -0,0 +1,2 @@ +kernel/drivers/cdrom +kernel/fs/isofs diff --git a/modules.d/cramfs b/modules.d/cramfs new file mode 100644 index 0000000..65c9c5f --- /dev/null +++ b/modules.d/cramfs @@ -0,0 +1 @@ +kernel/fs/cramfs diff --git a/modules.d/ide b/modules.d/ide new file mode 100644 index 0000000..dec5fc5 --- /dev/null +++ b/modules.d/ide @@ -0,0 +1 @@ +kernel/drivers/ide/*.ko diff --git a/modules.d/raid b/modules.d/raid new file mode 100644 index 0000000..1c3a38f --- /dev/null +++ b/modules.d/raid @@ -0,0 +1 @@ +kernel/drivers/md/raid* diff --git a/modules.d/scsi b/modules.d/scsi new file mode 100644 index 0000000..62a2810 --- /dev/null +++ b/modules.d/scsi @@ -0,0 +1,2 @@ +kernel/drivers/scsi/* +kernel/drivers/message/fusion diff --git a/modules.d/usb b/modules.d/usb new file mode 100644 index 0000000..6396750 --- /dev/null +++ b/modules.d/usb @@ -0,0 +1,3 @@ +kernel/drivers/usb/host +kernel/drivers/usb/storage +kernel/fs/fat |