freenas-proxmox/packaging/DEBIAN/postinst

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#!/bin/bash
# postinst: freenas-proxmox install/upgrade/trigger script
# Applies patches to Proxmox VE system files and installs the TrueNAS API plugin.
# No internet access required — all files are bundled in the package.
set -e
INSTALL_DIR="/usr/share/freenas-proxmox"
LIB_PATH="/usr/share"
LOG_FILE="/var/log/freenas-proxmox-install.log"
ZFSPLUGIN_PATH="/perl5/PVE/Storage/ZFSPlugin.pm"
PVEMANAGER_PATH="/pve-manager/js/pvemanagerlib.js"
APIDOC_PATH="/pve-docs/api-viewer/apidoc.js"
FREENAS_PM_PATH="/perl5/PVE/Storage/LunCmd/FreeNAS.pm"
REST_CLIENT_PATH="/perl5/REST/Client.pm"
log() {
echo "[freenas-proxmox] $*" | tee -a "$LOG_FILE"
}
# Detect installed Proxmox VE major version
detect_pve_major() {
local ver
ver=$(dpkg-query --showformat='${Version}' --show proxmox-ve 2>/dev/null || echo "0")
echo "${ver%%.*}"
}
# Find the best bundled patch for a given component and PVE major version.
# Walks down from the detected major version until a patch file is found.
find_patch() {
local component="$1"
local major="$2"
local patch_dir="${INSTALL_DIR}/patches/${component}"
local ver="$major"
while [ "$ver" -ge 5 ]; do
if [ -f "${patch_dir}/${ver}.patch" ]; then
echo "${patch_dir}/${ver}.patch"
return 0
fi
ver=$(( ver - 1 ))
done
log "WARNING: No bundled patch found for ${component} on Proxmox VE ${major}.x"
return 1
}
# Apply a patch to a target file idempotently.
# Creates a .orig backup (via patch --backup) on first application.
apply_patch() {
local target_rel="$1"
local patch_file="$2"
local label="$3"
local target="${LIB_PATH}${target_rel}"
[ -f "$target" ] || { log "ERROR: Target not found: ${target}"; return 1; }
[ -f "$patch_file" ] || { log "Skipping ${label}: patch file missing"; return 0; }
if grep -q "freenas" "$target" 2>/dev/null; then
log "${label} is already patched — skipping"
return 0
fi
log "Patching ${target} ..."
if patch --backup --ignore-whitespace "$target" < "$patch_file" >> "$LOG_FILE" 2>&1; then
log "${label} patched successfully"
else
log "ERROR: Failed to patch ${label} — see ${LOG_FILE} for details"
return 1
fi
}
install_files() {
log "Installing ${LIB_PATH}${FREENAS_PM_PATH}"
mkdir -p "$(dirname "${LIB_PATH}${FREENAS_PM_PATH}")"
cp "${INSTALL_DIR}/FreeNAS.pm" "${LIB_PATH}${FREENAS_PM_PATH}"
log "Installing ${LIB_PATH}${REST_CLIENT_PATH}"
mkdir -p "$(dirname "${LIB_PATH}${REST_CLIENT_PATH}")"
cp "${INSTALL_DIR}/REST-Client.pm" "${LIB_PATH}${REST_CLIENT_PATH}"
}
restart_pve_services() {
log "Restarting Proxmox VE services ..."
pvedaemon restart && log "pvedaemon restarted"
pveproxy restart && log "pveproxy restarted"
pvestatd restart && log "pvestatd restarted"
systemctl restart pvescheduler.service && log "pvescheduler restarted"
log "Done. Refresh your Proxmox browser tab to load the updated UI."
}
# ── Entry point ──────────────────────────────────────────────────────────────
major=$(detect_pve_major)
log "Proxmox VE major version detected: ${major}"
case "$1" in
triggered)
# dpkg fired us because one of the watched PVE files was updated.
log "Triggered by package update — re-applying patches for: $2"
for fullpath in $2; do
filename=$(basename "$fullpath")
filename="${filename%.*}" # strip extension
case "$filename" in
ZFSPlugin)
patch_file=$(find_patch "ZFSPlugin" "$major" || true)
apply_patch "$ZFSPLUGIN_PATH" "$patch_file" "ZFSPlugin.pm"
;;
pvemanagerlib)
patch_file=$(find_patch "pvemanagerlib" "$major" || true)
apply_patch "$PVEMANAGER_PATH" "$patch_file" "pvemanagerlib.js"
;;
apidoc)
patch_file=$(find_patch "apidoc" "$major" || true)
apply_patch "$APIDOC_PATH" "$patch_file" "apidoc.js"
;;
esac
done
install_files
exit 0
;;
configure)
log "Configuring freenas-proxmox (previous version: ${2:-none})"
CHANGED="no"
patch_file=$(find_patch "ZFSPlugin" "$major" || true)
apply_patch "$ZFSPLUGIN_PATH" "$patch_file" "ZFSPlugin.pm" && CHANGED="yes"
patch_file=$(find_patch "pvemanagerlib" "$major" || true)
apply_patch "$PVEMANAGER_PATH" "$patch_file" "pvemanagerlib.js" && CHANGED="yes"
patch_file=$(find_patch "apidoc" "$major" || true)
apply_patch "$APIDOC_PATH" "$patch_file" "apidoc.js" && CHANGED="yes"
install_files
CHANGED="yes"
[ "$CHANGED" = "yes" ] && restart_pve_services
exit 0
;;
abort-upgrade|abort-remove|abort-deconfigure)
;;
*)
echo "$0: called with unknown argument '$1'" >&2
exit 0
;;
esac
exit 0