75 lines
2.2 KiB
Bash
75 lines
2.2 KiB
Bash
#!/bin/bash
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set -ax
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exit_with() {
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echo "$1" >&2
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exit 1
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}
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validate() {
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[ ! -e /etc/fido2luks.conf ] && exit_with "/etc/fido2luks.conf does not exist! Please configure first"
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. /etc/fido2luks.conf
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[ ! -e "$FIDO2LUKS_DEVICE" ] && exit_with "FIDO2LUKS_DEVICE='$FIDO2LUKS_DEVICE' does not exist!"
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[ -z "$FIDO2LUKS_CREDENTIAL_ID" ] && exit_with "FIDO2LUKS_CREDENTIAL_ID must be set!"
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[ -z "$FIDO2LUKS_MAPPER_NAME" ] && exit_with "FIDO2LUKS_MAPPER_NAME must be set!"
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}
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build() {
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local mod
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add_binary "cryptsetup"
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add_module "dm-crypt"
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add_module "dm-integrity"
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if [[ $CRYPTO_MODULES ]]; then
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for mod in $CRYPTO_MODULES; do
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add_module "$mod"
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done
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else
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add_all_modules "/crypto/"
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fi
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add_binary "dmsetup"
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add_file "/usr/lib/udev/rules.d/10-dm.rules"
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add_file "/usr/lib/udev/rules.d/13-dm-disk.rules"
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add_file "/usr/lib/udev/rules.d/95-dm-notify.rules"
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add_file "/usr/lib/initcpio/udev/11-dm-initramfs.rules" "/usr/lib/udev/rules.d/11-dm-initramfs.rules"
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add_systemd_unit "systemd-ask-password-console.path"
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add_systemd_unit "systemd-ask-password-console.service"
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# cryptsetup calls pthread_create(), which dlopen()s libgcc_s.so.1
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add_binary "/usr/lib/libgcc_s.so.1"
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# add mkswap for creating swap space on the fly (see 'swap' in crypttab(5))
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add_binary "mkswap"
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[[ -f /etc/crypttab.initramfs ]] && add_file "/etc/crypttab.initramfs" "/etc/crypttab"
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validate
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add_file "/etc/fido2luks.conf" "/etc/fido2luks.conf"
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add_binary "fido2luks"
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add_runscipt
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}
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run_hook() {
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modprobe -a -q dm-crypt
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. /etc/fido2luks.conf
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if [ -z "$FIDO2LUKS_PASSWORD_HELPER" ]; then
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export FIDO2LUKS_PASSWORD_HELPER="systemd-ask-password 'FIDO2 password salt for $FIDO2LUKS_DEVICE'"
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fi
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fido2luks open
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}
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help() {
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cat <<HELPEOF
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This hook allows for an encrypted root device with systemd initramfs.
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See the manpage of systemd-cryptsetup-generator(8) for available kernel
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command line options. Alternatively, if the file /etc/crypttab.initramfs
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exists, it will be added to the initramfs as /etc/crypttab. See the
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crypttab(5) manpage for more information on crypttab syntax.
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HELPEOF
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}
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# vim: set ft=sh ts=4 sw=4 et:
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