#!/bin/bash

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check() {

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require_binaries mksquashfs unsquashfs || return 1

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for i in CONFIG_SQUASHFS CONFIG_BLK_DEV_LOOP CONFIG_OVERLAY_FS ; do

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if ! check_kernel_config $i; then

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dinfo "dracut-squash module requires kernel configuration $i (y or m)"

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return 1

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fi

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done

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return 255

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}

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depends() {

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echo "systemd-initrd"

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return 0

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}

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installpost() {

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local _busybox

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_busybox=$(find_binary busybox)

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# Move everything under $initdir except $squash_dir

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# itself into squash image

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for i in "$initdir"/*; do

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[[ "$squash_dir" == "$i"/* ]] || mv "$i" "$squash_dir"/

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done

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# Create mount points for squash loader

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mkdir -p "$initdir"/squash/

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mkdir -p "$squash_dir"/squash/

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# Copy dracut spec files out side of the squash image

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# so dracut rebuild and lsinitrd can work

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mkdir -p "$initdir/usr/lib/dracut/"

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for file in "$squash_dir"/usr/lib/dracut/*; do

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[[ -f $file ]] || continue

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cp "$file" "$initdir/${file#$squash_dir}"

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done

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# Install required modules and binaries for the squash image init script.

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if [[ $_busybox ]]; then

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inst "$_busybox" /usr/bin/busybox

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for _i in sh echo mount modprobe mkdir switch_root grep umount; do

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ln_r /usr/bin/busybox /usr/bin/$_i

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done

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else

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DRACUT_RESOLVE_DEPS=1 inst_multiple sh mount modprobe mkdir switch_root grep umount

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# libpthread workaround: pthread_cancel wants to dlopen libgcc_s.so

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inst_libdir_file -o "libgcc_s.so*"

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# FIPS workaround for Fedora/RHEL: libcrypto needs libssl when FIPS is enabled

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[[ $DRACUT_FIPS_MODE ]] && inst_libdir_file -o "libssl.so*"

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fi

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hostonly="" instmods "loop" "squashfs" "overlay"

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dracut_kernel_post

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# Install squash image init script.

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ln_r /usr/bin /bin

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ln_r /usr/sbin /sbin

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inst_simple "$moddir"/init-squash.sh /init

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# make sure that library links are correct and up to date for squash loader

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build_ld_cache

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}

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install() {

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if [[ $DRACUT_SQUASH_POST_INST ]]; then

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installpost

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fi

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}

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