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