efiboot/zz-pve-efiboot

   1 #! /bin/sh
   2 set -e
   3
   4 # adapted from '/etc/kernel/postinst.d/zz-update-grub and
   5 # /usr/lib/kernel/install.d/90-loaderentry.install, see also
   6 # https://kernel-team.pages.debian.net/kernel-handbook/ch-update-hooks.html
   7
   8 # relative to the ESP mountpoint
   9 PMX_ESP_DIR="EFI/proxmox"
  10
  11 MOUNTROOT="${TMPDIR:-/var/tmp}/espmounts"
  12
  13 # TODO:
  14 # - no mount on /boot/efi - mount all available esps on /var/tmp/esp-UUID
  15 #   and copy the stuff for all of them (or copy onto first and sync for the
  16 #   others - or don't copy if unchanged
  17 # - trap error-conditions and make sure stuff gets unmounted
  18 # - cleanup - gently delete all kernels not in kernel-keep-list
  19
  20 #[ -f "${LOADERDIR}/loader.conf" ] || exit 0
  21 #[ -d "${ESPMOUNT}/${PMX_ESP_DIR}" ] || exit 0
  22
  23 if command -V systemd-detect-virt >/dev/null 2>&1 &&
  24         systemd-detect-virt --quiet --container; then
  25         exit 0
  26 fi
  27
  28 cleanup() {
  29
  30         warn "unmounting ESPs"
  31         for mount in "${MOUNTROOT}"/* ; do
  32                 if echo "${mount}" | grep -qE '[0-9a-fA-F]{4}-[0-9a-fA-F]{4}' && \
  33                         mountpoint -q "${mount}"; then
  34                         umount "${mount}"
  35                 fi
  36         done
  37
  38 }
  39
  40 trap cleanup EXIT INT TERM QUIT
  41
  42 . /usr/share/pve-kernel-helper/scripts/functions
  43
  44 BOOT_KVERS="$(boot_kernel_list "$@")"
  45
  46 if [ -f /etc/kernel/cmdline ]; then
  47         CMDLINE="$(cat /etc/kernel/cmdline)"
  48 else
  49         warn "No /etc/kernel/cmdline found - falling back to /proc/cmdline"
  50         CMDLINE="$(cat /proc/cmdline)"
  51 fi
  52
  53
  54 update_esps() {
  55         esps="$(lsblk --list -o PATH,UUID,FSTYPE,PARTTYPE,MOUNTPOINT |
  56                 awk -v OFS=';' '$3 == "vfat" && $4 == "c12a7328-f81f-11d2-ba4b-00a0c93ec93b" && $5 == "" {print $1,$2}')"
  57
  58         for esp in ${esps}; do
  59                 path="$(echo "${esp}" | cut -d ';' -f1)"
  60                 uuid="$(echo "${esp}" | cut -d ';' -f2)"
  61                 mountpoint="${MOUNTROOT}/${uuid}"
  62
  63                 mkdir -p "${mountpoint}"
  64                 mount "${path}" "${mountpoint}" || \
  65                         { warn "mount of ${esp} failed - skipping"; continue; }
  66                 if [ ! -f "${mountpoint}/loader/loader.conf" ]; then
  67                         warn "${path} contains no loader.conf - skipping"
  68                         continue
  69                 fi
  70                 if [ ! -d "${mountpoint}/EFI/proxmox" ]; then
  71                         warn "${path} contains no EFI/proxmox - skipping"
  72                         continue
  73                 fi
  74
  75                 warn "Copying and configuring kernels on ${path}"
  76                 copy_and_config_kernels "${mountpoint}"
  77                 remove_old_kernels "${mountpoint}"
  78
  79                 umount "${mountpoint}" || \
  80                         { warn "umount of ${esp} failed - failure"; exit 2; }
  81
  82                 rmdir "${mountpoint}"
  83         done
  84
  85 }
  86
  87 copy_and_config_kernels() {
  88         esp="$1"
  89
  90
  91         for kver in ${BOOT_KVERS}; do
  92
  93                 linux_image="/boot/vmlinuz-${kver}"
  94                 initrd="/boot/initrd.img-${kver}"
  95
  96                 if [ ! -f "${linux_image}" ]; then
  97                         warn "No linux-image ${linux_image} found - skipping"
  98                         continue
  99                 fi
 100                 if [ ! -f "${initrd}" ]; then
 101                         warn "No initrd-image ${initrd} found - skipping"
 102                         continue
 103                 fi
 104
 105                 warn "  Copying kernel and creating boot-entry for ${kver}"
 106                 KERNEL_ESP_DIR="${PMX_ESP_DIR}/${kver}"
 107                 KERNEL_LIVE_DIR="${esp}/${KERNEL_ESP_DIR}"
 108                 mkdir -p "${KERNEL_LIVE_DIR}"
 109                 cp -u --preserve=timestamps "${linux_image}" "${KERNEL_LIVE_DIR}/"
 110                 cp -u --preserve=timestamps "${initrd}" "${KERNEL_LIVE_DIR}/"
 111
 112                 # create loader entry
 113                 cat > "${esp}/loader/entries/proxmox-${kver}.conf" <<- EOF
 114                         title    Proxmox
 115                         version  ${kver}
 116                         options   ${CMDLINE}
 117                         linux    /${KERNEL_ESP_DIR}/vmlinuz-${kver}
 118                         initrd   /${KERNEL_ESP_DIR}/initrd.img-${kver}
 119                 EOF
 120         done
 121
 122 }
 123
 124 remove_old_kernels() {
 125         esp="$1"
 126
 127         for kerneldir in "${esp}/${PMX_ESP_DIR}"/*; do
 128                 if [ ! -d "${kerneldir}" ]; then
 129                         warn "  ${kerneldir} is not a directory - skipping"
 130                         continue
 131                 fi
 132
 133                 kver="$(echo "${kerneldir}" | sed -r "s#^${esp}/${PMX_ESP_DIR}/(.+)\$#\\1#")"
 134
 135                 echo "${BOOT_KVERS}" | grep -q "${kver}" && continue;
 136                 warn "  Removing old version ${kver}"
 137                 rm -rf "${kerneldir}"
 138                 rm -f "${esp}/loader/entries/proxmox-${kver}.conf"
 139         done
 140
 141 }
 142
 143 set -- $DEB_MAINT_PARAMS
 144 mode="${1#\'}"
 145 mode="${mode%\'}"
 146 case $0:$mode in
 147         # Only run on postinst configure and postrm remove, to avoid wasting
 148         # time by calling update-grub multiple times on upgrade and removal.
 149         # Also run if we have no DEB_MAINT_PARAMS, in order to work with old
 150         # kernel packages.
 151         */postinst.d/*:|*/postinst.d/*:configure|*/postrm.d/*:|*/postrm.d/*:remove)
 152         update_esps
 153         ;;
 154 esac
 155
 156 exit 0