85 lines
4.1 KiB
Bash
Executable File
85 lines
4.1 KiB
Bash
Executable File
#!/bin/bash
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# 95dot1x-macsec: authenticate the port with 802.1X EAP-TLS (TPM-held key,
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# client cert in TPM NV) and bring up MACsec before netroot is mounted.
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# The supplicant is launched as a systemd "root storage daemon"
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# (argv[0] = @wpa_supplicant) so it survives switch-root and keeps the
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# MKA session — and therefore the link carrying the root fs — alive.
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check() {
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require_binaries wpa_supplicant wpa_cli tpm2_nvread openssl || return 1
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return 0
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}
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depends() {
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# network-manager (not network-legacy): NM renews the DHCP lease in the real
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# root after switch-root (the legacy one-shot lease was never renewed). The
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# secure path drives DHCP on macsec0 via nmcli instead of the old `ifup`.
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echo "network-manager bash"
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return 0
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}
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installkernel() {
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instmods macsec
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# tpm_crb/tpm_tis are usually built in; assert anyway
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instmods tpm_crb tpm_tis
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}
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install() {
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# wpa stack + tpm + openssl, plus the coreutils the hook calls. dracut on
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# RHEL only bundles binaries a module requests — head/ls/grep/etc. are NOT
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# present by default, so list everything the hook uses.
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# nvme: the rd.dot1x=0 test path drives `nvme connect-all` itself (this
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# distro's dracut nvmf module populates discovery.conf but never registers
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# an initqueue/online autoconnect hook). The nvmf module installs nvme too,
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# but list it here so the hook's dependency is explicit and load-order-safe.
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# nmcli: the secure path brings macsec0 up via NetworkManager (DHCP+renewal)
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# instead of the old network-legacy `ifup`.
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inst_multiple wpa_supplicant wpa_cli tpm2_nvread openssl ip setsid nmcli \
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grep sed cut tr sha256sum sleep mkdir nvme
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# TSS libraries that tpm2_nvread dlopens
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inst_libdir_file "libtss2-*"
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# Fleet-generic supplicant config + RADIUS CA
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inst_simple /etc/dot1x/wpa_supplicant-dot1x.conf /etc/dot1x/wpa_supplicant-dot1x.conf
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inst_simple /etc/dot1x/radius-ca.pem /etc/dot1x/radius-ca.pem
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# cmdline-stage hook (runs BEFORE NetworkManager starts): in secure mode it
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# drops /run/NetworkManager/conf.d/10-dot1x-unmanaged.conf so NM never grabs
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# the physical EAPOL NIC (wpa_supplicant owns it). No-op in rd.dot1x=0 test
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# mode, so NM manages+renews the boot NIC. Replaces the old static
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# 99-dot1x-unmanaged.conf, which couldn't be mode-aware.
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inst_hook cmdline 10 "$moddir/nm-unmanaged.sh"
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# Hook: runs from the initqueue once the NIC exists, before netroot
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inst_hook initqueue/settled 30 "$moddir/dot1x-macsec-up.sh"
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# Test-mode (rd.dot1x=0) NVMe-oF connect as a systemd unit. This initramfs
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# is systemd-driven and does NOT source dracut initqueue/online hooks when
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# the ip=dhcp link comes up (verified: the hook installs but never fires),
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# and the nvmf module registers no autoconnect — so a dracut hook never
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# runs. A oneshot unit ordered Before=initrd-root-device.target, with its
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# own wait-for-network + connect loop, connects the namespace
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# deterministically. ConditionKernelCommandLine=rd.dot1x=0 makes it a no-op
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# on the secure path.
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inst_simple "$moddir/nvmf-connect.sh" /usr/sbin/nvmf-connect
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# systemdsystemunitdir is normally /usr/lib/systemd/system, but dracut does
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# not reliably export it into module-setup context here — when empty,
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# inst_simple's dir handling silently DROPS the unit (the bug that left the
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# initramfs without nvmf-connect.service). Fall back to the canonical path.
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local _unitdir="${systemdsystemunitdir:-/usr/lib/systemd/system}"
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inst_simple "$moddir/nvmf-connect.service" "${_unitdir}/nvmf-connect.service"
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mkdir -p "${initdir}${_unitdir}/initrd-root-device.target.wants"
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ln -sf ../nvmf-connect.service \
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"${initdir}${_unitdir}/initrd-root-device.target.wants/nvmf-connect.service"
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# Hard-fail the dracut build if the unit didn't land — never ship a UKI that
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# silently can't connect its NVMe-oF root in test mode.
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if [ ! -e "${initdir}${_unitdir}/nvmf-connect.service" ]; then
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derror "95dot1x-macsec: nvmf-connect.service not installed into ${_unitdir}"
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return 1
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fi
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dracut_need_initqueue
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}
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