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#!/bin/sh
. samizdat-paths.sh
initrd=${samizdat_linux_dir}/initrd.img
vmlinuz=${samizdat_linux_dir}/vmlinuz
conf_dir=$samizdat_initramfs_conf_dir
apt_dependencies=$samizdat_initrd_files_dir/initrd-dependencies.txt
get_kernel_version()
{
local pkgs_file="$1"
egrep '^ii linux-image-(amd64|686)' "$pkgs_file" |
(read _ pkg ver _; apt-cache show "$pkg=$ver") |
grep Depends |
(read _ a; echo ${a#linux-image-})
}
pkgs_file=rootfs/_build/${rootfs:-samizdat}.pkgs.txt
[ -f "$pkgs_file" ] || exit
kernel_version=$(get_kernel_version rootfs/_build/${rootfs:-samizdat}.pkgs.txt)
[ "$kernel_version" ] || exit
debian_initrd=/boot/initrd.img-${kernel_version}
find_deps() {
find "$conf_dir" "$samizdat_initrd_files_dir" "$debian_initrd" "$@"
}
force_rebuild()
{
touch "$conf_dir"
return 1
}
rebuild()
{
[ ! -f "$apt_dependencies" ] ||
sudo apt-get install -q=10 --no-upgrade -y $(cat "$apt_dependencies")
set -ex
cp -f /boot/vmlinuz-"${kernel_version}" "$vmlinuz"
/usr/sbin/mkinitramfs -d "$conf_dir" -o "$initrd" "${kernel_version}" || force_rebuild
}
if [ ! -e "$initrd" -o ! -e "$vmlinuz" ]; then
rebuild
else
found=$(find_deps -newer "$initrd" -print -quit)
if [ "$found" ]; then
echo "initrd.sh: rebuild forced: found modified source: $found" >&2
rebuild
fi
fi
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