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 ESP_LIST="/etc/kernel/pve-efiboot-uuids"
  10 PMX_ESP_DIR="EFI/proxmox"
  11
  12 MOUNTROOT="${TMPDIR:-/var/tmp}/espmounts"
  13
  14 # - cleanup - gently delete all kernels not in kernel-keep-list
  15
  16 if command -V systemd-detect-virt >/dev/null 2>&1 &&
  17         systemd-detect-virt --quiet --container; then
  18         exit 0
  19 fi
  20
  21 cleanup() {
  22
  23         warn "unmounting ESPs"
  24         for mount in "${MOUNTROOT}"/* ; do
  25                 if echo "${mount}" | grep -qE '[0-9a-fA-F]{4}-[0-9a-fA-F]{4}' && \
  26                         mountpoint -q "${mount}"; then
  27                         umount "${mount}"
  28                 fi
  29         done
  30
  31 }
  32
  33 trap cleanup EXIT INT TERM QUIT
  34
  35 . /usr/share/pve-kernel-helper/scripts/functions
  36
  37 BOOT_KVERS="$(boot_kernel_list "$@")"
  38
  39 if [ -f /etc/kernel/cmdline ]; then
  40         CMDLINE="$(cat /etc/kernel/cmdline)"
  41 else
  42         warn "No /etc/kernel/cmdline found - falling back to /proc/cmdline"
  43         CMDLINE="$(cat /proc/cmdline)"
  44 fi
  45
  46 potential_esps(){
  47         lsblk --list -o PATH,UUID,FSTYPE,PARTTYPE,MOUNTPOINT |
  48         awk '$3 == "vfat" && $4 == "c12a7328-f81f-11d2-ba4b-00a0c93ec93b" && $5 == "" {print $1,$2}'
  49 }
  50
  51 update_esps() {
  52         if [ ! -f "${ESP_LIST}" ]; then
  53             warn "No ${ESP_LIST} found cannot update installed kernels - exiting"
  54             esps="$(potential_esps)"
  55             warn "add the UUIDs of one of the following devices to ${ESP_LIST}:"
  56             warn "${esps}"
  57             exit 1
  58         fi
  59         cat "${ESP_LIST}" | while IFS= read -r uuid; do
  60                 if ! (echo "${uuid}" | grep -qE '[0-9a-fA-F]{4}-[0-9a-fA-F]{4}'); then
  61                         warn "WARN: ${uuid} read from ${ESP_LIST} does not look like a VFAT-UUID - skipping"
  62                         continue
  63                 fi
  64
  65                 path="/dev/disk/by-uuid/$uuid"
  66                 if [ ! -e "${path}" ]; then
  67                         warn "WARN: ${path} does not exist - clean ${ESP_LIST}! - skipping"
  68                         continue
  69                 fi
  70
  71                 mountpoint="${MOUNTROOT}/${uuid}"
  72                 mkdir -p "${mountpoint}"
  73                 mount "${path}" "${mountpoint}" || \
  74                         { warn "mount of ${path} failed - skipping"; continue; }
  75                 if [ ! -f "${mountpoint}/loader/loader.conf" ]; then
  76                         warn "${path} contains no loader.conf - skipping"
  77                         continue
  78                 fi
  79                 if [ ! -d "${mountpoint}/EFI/proxmox" ]; then
  80                         warn "${path} contains no EFI/proxmox - skipping"
  81                         continue
  82                 fi
  83
  84                 warn "Copying and configuring kernels on ${path}"
  85                 copy_and_config_kernels "${mountpoint}"
  86                 remove_old_kernels "${mountpoint}"
  87
  88                 umount "${mountpoint}" || \
  89                         { warn "umount of ${path} failed - failure"; exit 2; }
  90
  91                 rmdir "${mountpoint}"
  92         done
  93
  94 }
  95
  96 copy_and_config_kernels() {
  97         esp="$1"
  98
  99
 100         for kver in ${BOOT_KVERS}; do
 101
 102                 linux_image="/boot/vmlinuz-${kver}"
 103                 initrd="/boot/initrd.img-${kver}"
 104
 105                 if [ ! -f "${linux_image}" ]; then
 106                         warn "No linux-image ${linux_image} found - skipping"
 107                         continue
 108                 fi
 109                 if [ ! -f "${initrd}" ]; then
 110                         warn "No initrd-image ${initrd} found - skipping"
 111                         continue
 112                 fi
 113
 114                 warn "  Copying kernel and creating boot-entry for ${kver}"
 115                 KERNEL_ESP_DIR="${PMX_ESP_DIR}/${kver}"
 116                 KERNEL_LIVE_DIR="${esp}/${KERNEL_ESP_DIR}"
 117                 mkdir -p "${KERNEL_LIVE_DIR}"
 118                 cp -u --preserve=timestamps "${linux_image}" "${KERNEL_LIVE_DIR}/"
 119                 cp -u --preserve=timestamps "${initrd}" "${KERNEL_LIVE_DIR}/"
 120
 121                 # create loader entry
 122                 cat > "${esp}/loader/entries/proxmox-${kver}.conf" <<- EOF
 123                         title    Proxmox
 124                         version  ${kver}
 125                         options   ${CMDLINE}
 126                         linux    /${KERNEL_ESP_DIR}/vmlinuz-${kver}
 127                         initrd   /${KERNEL_ESP_DIR}/initrd.img-${kver}
 128                 EOF
 129         done
 130
 131 }
 132
 133 remove_old_kernels() {
 134         esp="$1"
 135
 136         for kerneldir in "${esp}/${PMX_ESP_DIR}"/*; do
 137                 if [ ! -d "${kerneldir}" ]; then
 138                         warn "  ${kerneldir} is not a directory - skipping"
 139                         continue
 140                 fi
 141
 142                 kver="$(echo "${kerneldir}" | sed -r "s#^${esp}/${PMX_ESP_DIR}/(.+)\$#\\1#")"
 143
 144                 echo "${BOOT_KVERS}" | grep -q "${kver}" && continue;
 145                 warn "  Removing old version ${kver}"
 146                 rm -rf "${kerneldir}"
 147                 rm -f "${esp}/loader/entries/proxmox-${kver}.conf"
 148         done
 149
 150 }
 151
 152 set -- $DEB_MAINT_PARAMS
 153 mode="${1#\'}"
 154 mode="${mode%\'}"
 155 case $0:$mode in
 156         # Only run on postinst configure and postrm remove, to avoid wasting
 157         # time by calling update-grub multiple times on upgrade and removal.
 158         # Also run if we have no DEB_MAINT_PARAMS, in order to work with old
 159         # kernel packages.
 160         */postinst.d/*:|*/postinst.d/*:configure|*/postrm.d/*:|*/postrm.d/*:remove)
 161         update_esps
 162         ;;
 163 esac
 164
 165 exit 0