mirror_zfs/contrib/dracut/90zfs/module-setup.sh.in
Savyasachee Jha 5eae5a88b2 Multiple dracut module install script cleanups
- Replaced intances of `dracut_install` with `inst_simple`
- Removed calls to `test -x mark_hostonly` because the function is an
inbuilt dracut function
- Removed redundant installation of `systemd-ask-password` and
`systemd-tty-ask-password-agent` because they are already installed by
the systemd module. There is no need to install them again
- Removed multiple calls to the `mark_hostonly` function because the
`inst_simple` has a command-line switch for it
- Cleaned up the installation of the `zpool.cache`, `vdev_id.conf` and
`hostid` files to make the logic easier to follow
- Cleaned up and simplified the systemd service installation logic by
invoking systemctl instead of creating symlinks manually
- Replaced various hard-coded paths with dracut equivalents to better
conform with expected dracut behaviour
- Removed redundant call to `mkdir` (`inst_simple` creates the parent
directory if it does not exist on the destination initrd)

Reviewed-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Reviewed-by: Andrew J. Hesford <ajh@sideband.org>
Signed-off-by: Savyasachee Jha <hi@savyasacheejha.com>
Closes #13010
2022-02-16 15:28:18 -08:00

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#!/usr/bin/env bash
# shellcheck disable=SC2154
check() {
# We depend on udev-rules being loaded
[ "${1}" = "-d" ] && return 0
# Verify the zfs tool chain
for tool in "zgenhostid" "zpool" "zfs" "mount.zfs"; do
command -v "${tool}" >/dev/null || return 1
done
return 0
}
depends() {
echo udev-rules
return 0
}
installkernel() {
instmods -c zfs
}
install() {
inst_rules 90-zfs.rules 69-vdev.rules 60-zvol.rules
inst_multiple \
zgenhostid \
zfs \
zpool \
mount.zfs \
hostid \
grep \
awk \
tr \
cut \
head ||
{ dfatal "Failed to install essential binaries"; exit 1; }
# Adapted from https://github.com/zbm-dev/zfsbootmenu
if ! ldd "$(command -v zpool)" | grep -qF 'libgcc_s.so'; then
# On systems with gcc-config (Gentoo, Funtoo, etc.), use it to find libgcc_s
if command -v gcc-config >/dev/null; then
inst_simple "/usr/lib/gcc/$(s=$(gcc-config -c); echo "${s%-*}/${s##*-}")/libgcc_s.so.1" ||
{ dfatal "Unable to install libgcc_s.so"; exit 1; }
# Otherwise, use dracut's library installation function to find the right one
elif ! inst_libdir_file "libgcc_s.so*"; then
# If all else fails, just try looking for some gcc arch directory
inst_simple /usr/lib/gcc/*/*/libgcc_s.so* ||
{ dfatal "Unable to install libgcc_s.so"; exit 1; }
fi
fi
inst_hook cmdline 95 "${moddir}/parse-zfs.sh"
if [ -n "${systemdutildir}" ]; then
inst_script "${moddir}/zfs-generator.sh" "${systemdutildir}/system-generators/dracut-zfs-generator"
fi
inst_hook pre-mount 90 "${moddir}/zfs-load-key.sh"
inst_hook mount 98 "${moddir}/mount-zfs.sh"
inst_hook cleanup 99 "${moddir}/zfs-needshutdown.sh"
inst_hook shutdown 20 "${moddir}/export-zfs.sh"
inst_script "${moddir}/zfs-lib.sh" "/lib/dracut-zfs-lib.sh"
# -H ensures they are marked host-only
# -o ensures there is no error upon absence of these files
inst_multiple -o -H \
"@sysconfdir@/zfs/zpool.cache" \
"@sysconfdir@/zfs/vdev_id.conf"
# Synchronize initramfs and system hostid
if ! inst_simple -H @sysconfdir@/hostid; then
if HOSTID="$(hostid 2>/dev/null)" && [ "${HOSTID}" != "00000000" ]; then
zgenhostid -o "${initdir}@sysconfdir@/hostid" "${HOSTID}"
mark_hostonly @sysconfdir@/hostid
fi
fi
if dracut_module_included "systemd"; then
inst_simple "${systemdsystemunitdir}/zfs-import.target"
systemctl -q --root "${initdir}" add-wants initrd.target zfs-import.target
inst_simple "${moddir}/zfs-env-bootfs.service" "${systemdsystemunitdir}/zfs-env-bootfs.service"
systemctl -q --root "${initdir}" add-wants zfs-import.target zfs-env-bootfs.service
for _service in \
"zfs-import-scan.service" \
"zfs-import-cache.service" \
"zfs-load-module.service"; do
inst_simple "${systemdsystemunitdir}/${_service}"
systemctl -q --root "${initdir}" add-wants zfs-import.target "${_service}"
done
for _service in \
"zfs-snapshot-bootfs.service" \
"zfs-rollback-bootfs.service"; do
inst_simple "${moddir}/${_service}" "${systemdsystemunitdir}/${_service}"
systemctl -q --root "${initdir}" add-wants initrd.target "${_service}"
done
inst_simple "${moddir}/import-opts-generator.sh" "${systemdutildir}/system-environment-generators/zfs-import-opts.sh"
fi
}