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