#!/bin/sh
# TODO: check samizdat source to see what it copies
[ "$1" = prereqs ] && { echo; exit; }

die() { printf 'Error: generating initramfs: %s\n' "$*" >&2; exit 1; }

CopyExec() { copy_exec "$@" || die "failed to copy_exec $*"; }
CopyExecE() { [ "$2" ] || die "cannot find binary to copy: $1"; shift; CopyExec "$@"; }

. /usr/share/initramfs-tools/hook-functions
PATH=/usr/local/lib/samizdat-rhizome/initrd:/usr/local/bin:$PATH
. samizdat-paths.sh

repo_execs=$(echo "${samizdat_initrd_files_dir}"/*)

path_execs='
    mountpoint openvt rsync gpg2 pinentry-curses truncate dmsetup
    dmstats cryptsetup mkfs.btrfs btrfs fsck.hfsplus wait_for_files
    samizdat-pinentry dynmenu samizdat-password-agent samizdat-gpg-agent
    parted fallocate strace btrfstune sfdisk
'

graft_paths="
    /bin/OpenVT=/bin/openvt
    /bin/LoSetup=/sbin/losetup
    /patchroot/patchroot.sh=${samizdat_initrd_files_dir}/patchroot.sh
    /patchroot/sources.list=/etc/apt/sources.list
    /patchroot/initrd-dependencies.txt=${samizdat_initrd_files_dir}/initrd-dependencies.txt
    /lib/samizdat/vol_id.txt=${samizdat_initrd_files_dir}/vol_id.txt
"

absolute_path_copies='/lib/terminfo/l/linux /usr/bin/gpg-agent'

modules='loop dm-snapshot dm-crypt btrfs hfs hfsplus'
modules_dirs='kernel/drivers/net/ethernet kernel/fs/nls kernel/crypto'

for f in $repo_execs; do CopyExec "$f" /bin; done
for c in $path_execs; do
    s=$(which $c)
    CopyExecE "$c" "$s" /bin;
done
for f in $absolute_path_copies; do CopyExec "$f" "$f"; done
for m in $modules; do force_load "$m" || die "command failed: force_load $m"; done
for dir in $modules_dirs; do copy_modules_dir "$dir" || die "command failed: copy_modules_dir $dir"; done

for e in $graft_paths; do
    case "$e" in
        *=*) CopyExecE "graft_path $e" "${e#*=}" "${e%%=*}" ;;
        *) die "(BUG) invalid graft_path: $e" ;;
    esac
done

exit 0