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binaries handling

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illiliti 2020-01-07 00:39:15 +03:00
parent d26d26d044
commit 814dcf4cd7
2 changed files with 39 additions and 21 deletions
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4
config
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@ -15,10 +15,10 @@ rootfstype="ext4"
rootflags=""
# drivers
drivers="crc32c_generic libcrc32c ext4 virtio-scsi virtio-pci sd-mod"
drivers="ext4 virtio-scsi virtio-pci sd-mod"
# binaries
#binaries="sh findfs mount switch_root modprobe umount busybox.static"
binaries="findfs mount modprobe umount"
# LVM support
#use_lvm=0

56
generate
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@ -22,38 +22,56 @@ kernel="$(uname -r)"
moddir="/lib/modules"
# structure
for d in bin dev etc lib/modules mnt/root proc root sys; do
mkdir -p "$tmpdir/$d"
for d in bin dev etc usr/lib usr/bin mnt/root proc root sys; do
mkdir -p "$tmpdir/$d"
done
#ln -rs "$tmpdir/usr/lib" "$tmpdir/lib"
#ln -rs "$tmpdir/usr/lib" "$tmpdir/lib64"
#ln -rs "$tmpdir/usr/bin" "$tmpdir/bin"
# TODO parse fstab | parse crypttab
# make libraries and binaries happy
ln -rs "$tmpdir/usr/lib" "$tmpdir/lib"
ln -rs "$tmpdir/usr/lib" "$tmpdir/lib64"
ln -rs "$tmpdir/usr/lib" "$tmpdir/lib32"
ln -rs "$tmpdir/usr/bin" "$tmpdir/bin"
ln -rs "$tmpdir/usr/bin" "$tmpdir/sbin"
# TODO parse fstab | crypttab
#while [ "$use_fstab" -eq 1 ] && read fs dir type opts; do thing; done < /etc/fstab
# TODO rewrite drivers installing | handle $drivers config var
# install drivers
find "$moddir/$kernel/kernel/drivers/virtio" "$moddir/$kernel/kernel/arch" "$moddir/$kernel/kernel/crypto" "$moddir/$kernel/kernel/fs" "$moddir/$kernel/kernel/lib" "$moddir/$kernel/kernel/drivers/block" "$moddir/$kernel/kernel/drivers/ata" "$moddir/$kernel/kernel/drivers/md" "$moddir/$kernel/kernel/drivers/scsi" "$moddir/$kernel/kernel/drivers/usb/storage" "$moddir/$kernel/kernel/drivers/usb/host" -type f -exec cp --parents "{}" "$tmpdir" ";"
cp "$moddir/$kernel/modules.builtin" "$moddir/$kernel/modules.order" "$tmpdir/$moddir/$kernel"
cp "$moddir/$kernel/modules.softdep" "$moddir/$kernel/modules.builtin" "$moddir/$kernel/modules.order" "$tmpdir/$moddir/$kernel"
# temporary workaround
./busybox depmod -b "$tmpdir" "$kernel"
# create modules.* files
depmod -b "$tmpdir" "$kernel"
# TODO rewrite binaries installing | handle $binaries config var
# install binaries
#for b in $(echo "$binaries"); do
#mkdir -p "$tmpdir/usr/bin"
#mkdir -p "$tmpdir/usr/lib"
#cp -n "/lib/ld-linux-x86-64.so.2" "$tmpdir/usr/lib" && strip -s "$tmpdir/usr/lib/ld-linux-x86-64.so.2"
#cp "$(which $b)" "$tmpdir/usr/bin"
#ldd "$(which $b)" | grep '=> /' | awk '{print $3}' | xargs -I '{}' cp -n '{}' "$tmpdir/usr/lib"
#done
for b in $(echo $binaries); do
cp "$(which $b)" "$tmpdir/usr/bin/$b" && chmod +x "$tmpdir/usr/bin/$b"
# check statically linking
ldd "$(which $b)" >/dev/null || continue
# handle .so symlinks for dymanically linked binaries
for l in $(ldd "$(which $b)" | sed -nre 's,.* (/.*lib.*/.*.so.*) .*,\1,p' -e 's,.*(/lib.*/ld.*.so.*) .*,\1,p'); do
if [ -h "$l" ]; then
# regular
cp -n --parents "$(readlink -f $l)" "$tmpdir"
# symlink
cp -n -a --parents "$l" "$tmpdir"
else
cp -n --parents "$(readlink -f $l)" "$tmpdir"
fi
done
done
# install files
cp ./init "$tmpdir/init" && chmod +x "$tmpdir/init"
cp ./busybox "$tmpdir/bin/busybox" && chmod +x "$tmpdir/bin/busybox"
# strip binaries and libraries
# uncomment this if your initramfs are huge
#find "$tmpdir" -type f -executable -exec strip -s "{}" ";"
# initialize config
cat <<EOF > "$tmpdir/config"
root="$root"
rootfstype="$rootfstype"
@ -69,8 +87,8 @@ EOF
# packing
if ! ( cd "$tmpdir" && find . | cpio --create --verbose --format=newc | gzip --best ) > "./initramfs-$kernel.img.gz"; then
echo "failed"
exit 1
echo "failed"
exit 1
fi
rm -rf "$tmpdir"