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                             { warn "umount of ${mount} failed - failure"; exit 0; }
  25                 fi
  26         done
  27
  28 }
  29
  30 trap cleanup EXIT INT TERM QUIT
  31
  32 . /usr/share/pve-kernel-helper/scripts/functions
  33
  34 LOADER_TITLE="Proxmox Virtual Environment"
  35 if [ -d /usr/share/doc/proxmox-mailgateway/ ]; then
  36         LOADER_TITLE="Proxmox Mailgateway"
  37 fi
  38
  39 potential_esps(){
  40         lsblk --list -o PATH,UUID,FSTYPE,PARTTYPE,MOUNTPOINT |
  41         awk '$3 == "vfat" && $4 == "c12a7328-f81f-11d2-ba4b-00a0c93ec93b" && $5 == "" {print $1,$2}'
  42 }
  43
  44 update_esps() {
  45         if [ ! -f "${ESP_LIST}" ]; then
  46             warn "No ${ESP_LIST} found, skipping ESP sync."
  47             exit 0
  48         fi
  49         if [ -f /etc/kernel/cmdline ]; then
  50                 CMDLINE="$(cat /etc/kernel/cmdline)"
  51         else
  52                 warn "No /etc/kernel/cmdline found - falling back to /proc/cmdline"
  53                 CMDLINE="$(cat /proc/cmdline)"
  54         fi
  55
  56         loop_esp_list update_esp_func
  57 }
  58
  59 update_esp_func() {
  60         if ! (echo "${curr_uuid}" | grep -qE '[0-9a-fA-F]{4}-[0-9a-fA-F]{4}'); then
  61                 warn "WARN: ${curr_uuid} read from ${ESP_LIST} does not look like a VFAT-UUID - skipping"
  62                 return
  63         fi
  64
  65         path="/dev/disk/by-uuid/$curr_uuid"
  66         if [ ! -e "${path}" ]; then
  67                 warn "WARN: ${path} does not exist - clean '${ESP_LIST}'! - skipping"
  68                 return
  69         fi
  70
  71         mountpoint="${MOUNTROOT}/${curr_uuid}"
  72         mkdir -p "${mountpoint}" || \
  73                 { warn "creation of mountpoint ${mountpoint} failed - skipping"; return; }
  74         mount "${path}" "${mountpoint}" || \
  75                 { warn "mount of ${path} failed - skipping"; return; }
  76         if [ ! -f "${mountpoint}/$PMX_LOADER_CONF" ]; then
  77                 warn "${path} contains no loader.conf - skipping"
  78                 return
  79         fi
  80         if [ ! -d "${mountpoint}/$PMX_ESP_DIR" ]; then
  81                 warn "${path}/$PMX_ESP_DIR does not exist- skipping"
  82                 return
  83         fi
  84
  85         warn "Copying and configuring kernels on ${path}"
  86         copy_and_config_kernels "${mountpoint}"
  87         remove_old_kernels "${mountpoint}"
  88
  89         umount "${mountpoint}" || \
  90                 { warn "umount of ${path} failed - failure"; exit 0; }
  91
  92         rmdir "${mountpoint}" || true
  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    ${LOADER_TITLE}
 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)
 160                 reexec_in_mountns "$@"
 161                 BOOT_KVERS="$(boot_kernel_list "$@")"
 162                 update_esps
 163         ;;
 164          */postrm.d/*:|*/postrm.d/*:remove)
 165                 reexec_in_mountns "$@"
 166                 # no newly installed kernel
 167                 BOOT_KVERS="$(boot_kernel_list)"
 168                 update_esps
 169         ;;
 170 esac
 171
 172 exit 0