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