proxmox-boot/zz-proxmox-boot

   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
  10 # - cleanup - gently delete all kernels not in kernel-keep-list
  11
  12 if command -V systemd-detect-virt >/dev/null 2>&1 &&
  13         systemd-detect-virt --quiet --container; then
  14         exit 0
  15 fi
  16
  17 cleanup() {
  18
  19         for mount in "${MOUNTROOT}"/* ; do
  20                 if echo "${mount}" | grep -qE '[0-9a-fA-F]{4}-[0-9a-fA-F]{4}' && \
  21                         mountpoint -q "${mount}"; then
  22                         umount "${mount}" || \
  23                             { warn "umount of ${mount} failed - failure"; exit 0; }
  24                 fi
  25         done
  26
  27 }
  28
  29 trap cleanup EXIT INT TERM QUIT
  30
  31 . /usr/share/pve-kernel-helper/scripts/functions
  32
  33 LOADER_TITLE="Proxmox Virtual Environment"
  34 if [ -d /etc/pve/ ]; then
  35         LOADER_TITLE="Proxmox Virtual Environment"
  36 elif [ -d /usr/share/doc/proxmox-mailgateway/ ]; then
  37         LOADER_TITLE="Proxmox Mailgateway"
  38 elif [ -d /usr/share/doc/proxmox-backup/ ]; then
  39         LOADER_TITLE="Proxmox Backup Server"
  40 fi
  41
  42 update_esps() {
  43         if [ ! -f "${ESP_LIST}" ]; then
  44             warn "No ${ESP_LIST} found, skipping ESP sync."
  45             exit 0
  46         fi
  47         if [ -f /etc/kernel/cmdline ]; then
  48                 # we can have cmdline files with multiple or no new line at all, handle both!
  49                 while IFS= read -r CMDLINE || [ -n "$CMDLINE" ]; do
  50                         break
  51                 done < /etc/kernel/cmdline
  52                 echo ${CMDLINE} | grep -q 'root=' || \
  53                         { warn "No root= parameter in /etc/kernel/cmdline found!"; exit 1; }
  54         else
  55                 warn "No /etc/kernel/cmdline found - falling back to /proc/cmdline"
  56                 # remove initrd entries
  57                 CMDLINE="$(perl -pe 's/\binitrd=([0-9a-zA-Z\\\/.-])*\s*//g;' /proc/cmdline)"
  58         fi
  59
  60         loop_esp_list update_esp_func
  61 }
  62
  63 update_esp_func() {
  64         if ! (echo "${curr_uuid}" | grep -qE '[0-9a-fA-F]{4}-[0-9a-fA-F]{4}'); then
  65                 warn "WARN: ${curr_uuid} read from ${ESP_LIST} does not look like a VFAT-UUID - skipping"
  66                 return
  67         fi
  68
  69         path="/dev/disk/by-uuid/$curr_uuid"
  70         if [ ! -e "${path}" ]; then
  71                 warn "WARN: ${path} does not exist - clean '${ESP_LIST}'! - skipping"
  72                 return
  73         fi
  74
  75         mountpoint="${MOUNTROOT}/${curr_uuid}"
  76         mkdir -p "${mountpoint}" || \
  77                 { warn "creation of mountpoint ${mountpoint} failed - skipping"; return; }
  78         mount "${path}" "${mountpoint}" || \
  79                 { warn "mount of ${path} failed - skipping"; return; }
  80         if [ -d /sys/firmware/efi ]; then
  81                 if [ ! -f "${mountpoint}/$PMX_LOADER_CONF" ]; then
  82                         warn "${path} contains no loader.conf - skipping"
  83                         return
  84                 fi
  85                 if [ ! -d "${mountpoint}/$PMX_ESP_DIR" ]; then
  86                         warn "${path}/$PMX_ESP_DIR does not exist- skipping"
  87                         return
  88                 fi
  89         elif [ ! -d "${mountpoint}/grub" ]; then
  90                 warn "${path} contains no grub directory - skipping"
  91                 return
  92         fi
  93         warn "Copying and configuring kernels on ${path}"
  94         copy_and_config_kernels "${mountpoint}"
  95         if [ -d /sys/firmware/efi ]; then
  96                 remove_old_kernels_efi "${mountpoint}"
  97         else
  98                 remove_old_kernels_legacy "${mountpoint}"
  99                 mount --bind "${mountpoint}" "/boot"
 100                 update-grub
 101                 umount /boot
 102
 103         fi
 104
 105         umount "${mountpoint}" || \
 106                 { warn "umount of ${path} failed - failure"; exit 0; }
 107
 108         rmdir "${mountpoint}" || true
 109 }
 110
 111 copy_and_config_kernels() {
 112         esp="$1"
 113
 114
 115         for kver in ${BOOT_KVERS}; do
 116
 117                 linux_image="/boot/vmlinuz-${kver}"
 118                 initrd="/boot/initrd.img-${kver}"
 119
 120                 if [ ! -f "${linux_image}" ]; then
 121                         warn "No linux-image ${linux_image} found - skipping"
 122                         continue
 123                 fi
 124                 if [ ! -f "${initrd}" ]; then
 125                         warn "No initrd-image ${initrd} found - skipping"
 126                         continue
 127                 fi
 128
 129                 if [ -d /sys/firmware/efi ]; then
 130
 131                         warn "  Copying kernel and creating boot-entry for ${kver}"
 132                         KERNEL_ESP_DIR="${PMX_ESP_DIR}/${kver}"
 133                         KERNEL_LIVE_DIR="${esp}/${KERNEL_ESP_DIR}"
 134                         mkdir -p "${KERNEL_LIVE_DIR}"
 135                         cp --preserve=timestamps "${linux_image}" "${KERNEL_LIVE_DIR}/"
 136                         cp --preserve=timestamps "${initrd}" "${KERNEL_LIVE_DIR}/"
 137
 138                         # create loader entry
 139                         cat > "${esp}/loader/entries/proxmox-${kver}.conf" <<- EOF
 140                                 title    ${LOADER_TITLE}
 141                                 version  ${kver}
 142                                 options  ${CMDLINE}
 143                                 linux    /${KERNEL_ESP_DIR}/vmlinuz-${kver}
 144                                 initrd   /${KERNEL_ESP_DIR}/initrd.img-${kver}
 145                         EOF
 146                 else
 147                         warn "  Copying kernel ${kver}"
 148                         cp --preserve=timestamps "${linux_image}" "${esp}/"
 149                         cp --preserve=timestamps "${initrd}" "${esp}/"
 150                 fi
 151         done
 152
 153 }
 154
 155 remove_old_kernels_efi() {
 156         esp="$1"
 157
 158         for kerneldir in "${esp}/${PMX_ESP_DIR}"/*; do
 159                 if [ ! -d "${kerneldir}" ]; then
 160                         warn "  ${kerneldir} is not a directory - skipping"
 161                         continue
 162                 fi
 163
 164                 kver="$(echo "${kerneldir}" | sed -r "s#^${esp}/${PMX_ESP_DIR}/(.+)\$#\\1#")"
 165
 166                 echo "${BOOT_KVERS}" | grep -q "${kver}" && continue;
 167                 warn "  Removing old version ${kver}"
 168                 rm -rf "${kerneldir}"
 169                 rm -f "${esp}/loader/entries/proxmox-${kver}.conf"
 170         done
 171
 172 }
 173
 174 remove_old_kernels_legacy() {
 175         esp="$1"
 176
 177         for kernel in "${esp}/"vmlinuz-*; do
 178                 kver="$(echo "${kernel}" | sed -r "s#^${esp}/vmlinuz-(.+)\$#\\1#")"
 179
 180                 echo "${BOOT_KVERS}" | grep -q "${kver}" && continue;
 181                 warn "  Removing old version ${kver}"
 182                 rm -rf "${esp}/vmlinuz-${kver}"
 183                 rm -rf "${esp}/initrd.img-${kver}"
 184         done
 185
 186 }
 187
 188 set -- $DEB_MAINT_PARAMS
 189 mode="${1#\'}"
 190 mode="${mode%\'}"
 191 case $0:$mode in
 192         # Only run on postinst configure and postrm remove, to avoid wasting
 193         # time by calling update-grub multiple times on upgrade and removal.
 194         # Also run if we have no DEB_MAINT_PARAMS, in order to work with old
 195         # kernel packages.
 196         */postinst.d/*:|*/postinst.d/*:configure)
 197                 reexec_in_mountns "$@"
 198                 BOOT_KVERS="$(boot_kernel_list "$@")"
 199                 update_esps
 200         ;;
 201          */postrm.d/*:|*/postrm.d/*:remove)
 202                 reexec_in_mountns "$@"
 203                 # no newly installed kernel
 204                 BOOT_KVERS="$(boot_kernel_list)"
 205                 update_esps
 206         ;;
 207 esac
 208
 209 exit 0