v0.4.0: add update.sh
Fetch a newer release and apply it, preserving the nested-snapshot opt-in setting. bash update.sh # to the newest release, with a confirmation bash update.sh --check # show what would happen; change nothing bash update.sh --rollback # undo the last update Deliberately NOT automated. This patch injects Python into middlewared and re-applies itself at every boot, so an unattended pull would let any bad upstream commit reach a box with no human in the loop and take effect on the next reboot. v0.0.4 shipped exactly such a bug and took every app on the box down. The manual step is the safety gate. Design decisions worth keeping: - Defaults to the newest RELEASE TAG, not main. main can be mid-refactor; a tag is the tested artifact. --main exists but says so loudly. - Tags ordered by version, not date. Date order silently downgrades the box the first time a hotfix is tagged out of band: a v0.3.6 cut after v0.4.0 would sort as "newest". - Refuses to run over a dirty working tree rather than merging across hand-edited or scp'd files. (Verified: the guard fires.) - Shows the commits and release notes you do not have, read from the TARGET's CHANGELOG via tools/release_notes.py -- not a second copy of the extractor. - Records the previous revision BEFORE moving, so --rollback works even if install.sh dies halfway. - Repairs .git ownership, which past `sudo git pull`s leave root-owned and which then breaks every later non-root git command. update.sh is covered by the version-drift check, so it cannot go stale the way create_task.py's __version__ did. Tested end to end in a throwaway clone: detects v0.3.2 -> v0.3.5, lists missing commits, handles already-up-to-date, and the dirty-tree guard fires. 132 tests, ruff and shellcheck clean.
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#!/bin/bash
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# update.sh — fetch a newer release of truecloud-patch and apply it.
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#
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# ── RUN THIS BY HAND. NEVER FROM CRON OR A SYSTEMD TIMER. ─────────────────────
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#
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# This patch injects Python into middlewared and re-applies itself at every boot.
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# An unattended pull would let any bad upstream commit reach your box with no
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# human in the loop, and take effect on the next reboot. That is not theoretical:
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# v0.0.4 shipped a boot-time bug that took every app on the box down.
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#
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# The manual step IS the safety gate. Keep it.
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#
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# By default this updates to the newest RELEASE TAG, not to main. main can be
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# mid-refactor; a tag is the tested artifact. Use --main only if you know why.
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#
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# bash update.sh # to the newest release, with a confirmation
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# bash update.sh --check # show what would happen; change nothing
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# bash update.sh --rollback # undo the last update
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set -euo pipefail
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VERSION="0.4.0"
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PATCH_DIR="$(cd "$(dirname "$0")" && pwd)"
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_PREV_FILE="$PATCH_DIR/.update_previous"
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_target=""
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_use_main=0
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_assume_yes=0
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_check_only=0
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_rollback=0
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usage() {
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cat <<USAGE
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Usage: bash update.sh [options]
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Options:
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--to <ref> Update to a specific tag or commit (default: newest release tag)
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--main Update to origin/main — UNRELEASED code, no guarantees
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--check Show what an update would do and exit; changes nothing
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--rollback Return to the revision recorded before the last update
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--yes, -y Skip the confirmation prompt
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-h, --help Show this help
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Updating preserves your nested-snapshot opt-in setting either way.
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USAGE
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}
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while [ $# -gt 0 ]; do
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case "$1" in
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--to) _target="${2:-}"; shift ;;
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--main) _use_main=1 ;;
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--check) _check_only=1 ;;
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--rollback) _rollback=1 ;;
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--yes|-y) _assume_yes=1 ;;
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-h|--help) usage; exit 0 ;;
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*) echo "ERROR: unknown option: $1" >&2; echo "" >&2; usage >&2; exit 1 ;;
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esac
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shift
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done
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echo "=== TrueNAS TrueCloud Provider Patch — Update (v${VERSION}) ==="
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echo ""
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# ── Preflight ─────────────────────────────────────────────────────────────────
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if [ "$(id -u)" -ne 0 ]; then
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echo "ERROR: must be run as root (install.sh needs it)." >&2
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exit 1
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fi
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cd "$PATCH_DIR"
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if ! git rev-parse --git-dir >/dev/null 2>&1; then
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echo "ERROR: $PATCH_DIR is not a git clone — nothing to update." >&2
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echo " Re-clone from https://github.com/sudolulo/truenas-truecloud-patch" >&2
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exit 1
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fi
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# Past `sudo git pull`s can leave root-owned objects in .git that then break any
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# non-root git command. We run as root, so we would only make that worse.
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_owner="$(stat -c '%U' "$PATCH_DIR")"
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if [ -n "$_owner" ] && [ "$_owner" != "root" ]; then
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chown -R "$_owner" "$PATCH_DIR/.git" 2>/dev/null || true
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fi
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# A dirty tree means someone edited or scp'd files in place; merging over that
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# silently loses their changes, or conflicts halfway through.
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if [ -n "$(git status --porcelain --untracked-files=no)" ]; then
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echo "ERROR: the working tree has uncommitted changes:" >&2
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git status --short --untracked-files=no >&2
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echo "" >&2
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echo " Refusing to update over them. Commit, stash, or discard them first:" >&2
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echo " git -C $PATCH_DIR checkout -- ." >&2
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exit 1
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fi
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# ── Rollback ──────────────────────────────────────────────────────────────────
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if [ "$_rollback" -eq 1 ]; then
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if [ ! -f "$_PREV_FILE" ]; then
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echo "ERROR: no previous revision recorded — nothing to roll back to." >&2
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exit 1
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fi
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_prev="$(cat "$_PREV_FILE")"
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echo "Rolling back to $_prev ..."
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git checkout -q "$_prev"
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echo "Reverted. Re-applying ..."
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echo ""
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bash "$PATCH_DIR/install.sh"
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exit 0
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fi
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# ── Work out where we are and where we are going ──────────────────────────────
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echo "Fetching ..."
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git fetch --quiet --tags --prune origin
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_current="$(git rev-parse HEAD)"
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_current_desc="$(git describe --tags --always 2>/dev/null || echo "$_current")"
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if [ -n "$_target" ]; then
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:
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elif [ "$_use_main" -eq 1 ]; then
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_target="origin/main"
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else
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# Newest release tag by VERSION order, not by tag date. Date order is only
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# correct while tags are created in ascending version order; it breaks the
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# moment a hotfix is tagged out of band (a v0.3.6 released after v0.4.0 would
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# sort as "newest" by date and silently downgrade the box).
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_target="$(git tag -l 'v*' --sort=-version:refname | head -1)"
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if [ -z "$_target" ]; then
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echo "ERROR: no release tags found; use --main to track unreleased code." >&2
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exit 1
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fi
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fi
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if ! _target_sha="$(git rev-parse --verify --quiet "${_target}^{commit}")"; then
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echo "ERROR: '$_target' is not a valid tag, branch, or commit." >&2
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exit 1
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fi
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echo " current: $_current_desc"
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echo " target: $_target ($(git rev-parse --short "$_target_sha"))"
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echo ""
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if [ "$_current" = "$_target_sha" ]; then
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echo "Already up to date. Nothing to do."
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exit 0
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fi
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# ── Show what is coming ───────────────────────────────────────────────────────
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echo "Commits you do not have yet:"
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git log --oneline --no-decorate "$_current..$_target_sha" | sed 's/^/ /' || true
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echo ""
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# Reuse tools/release_notes.py rather than re-implementing the extractor here —
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# a second copy would be the untested one. Read the CHANGELOG *of the target*, so
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# the notes describe what you are about to install.
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if [ -f "$PATCH_DIR/tools/release_notes.py" ] && [ "$_use_main" -eq 0 ] \
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&& [ -z "${_target##v*}" ]; then
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_cl="$(mktemp)"
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if git show "$_target_sha:CHANGELOG.md" > "$_cl" 2>/dev/null && [ -s "$_cl" ]; then
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echo "Release notes for $_target:"
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python3 "$PATCH_DIR/tools/release_notes.py" notes "$_target" "$_cl" \
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2>/dev/null | sed 's/^/ /' || echo " (no notes for $_target)"
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echo ""
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fi
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rm -f "$_cl"
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fi
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if [ "$_use_main" -eq 1 ]; then
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echo "NOTE: --main tracks UNRELEASED code. It has passed CI, but it is not a"
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echo " tested release, and apply.sh runs at every boot."
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echo ""
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fi
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if [ "$_check_only" -eq 1 ]; then
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echo "--check given; nothing changed."
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exit 0
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fi
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# ── Confirm ───────────────────────────────────────────────────────────────────
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if [ "$_assume_yes" -eq 0 ]; then
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printf "Apply this update and restart middlewared? [y/N] "
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read -r _answer </dev/tty || _answer=""
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case "$_answer" in
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y|Y|yes|YES) ;;
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*) echo "Aborted. Nothing changed."; exit 0 ;;
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esac
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echo ""
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fi
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# ── Apply ─────────────────────────────────────────────────────────────────────
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# Record where we were BEFORE moving, so --rollback works even if install.sh dies.
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echo "$_current" > "$_PREV_FILE"
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echo "Checking out $_target ..."
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git checkout -q --detach "$_target_sha"
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echo " now at $(git describe --tags --always)"
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echo ""
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echo "Applying (this preserves your nested-snapshot setting) ..."
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echo ""
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if ! bash "$PATCH_DIR/install.sh"; then
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echo ""
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echo "ERROR: install.sh failed after updating." >&2
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echo " Roll back with: bash $PATCH_DIR/update.sh --rollback" >&2
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echo " Or disable the patch entirely: bash $PATCH_DIR/recover.sh" >&2
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exit 1
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fi
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echo ""
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echo "=== Update complete ==="
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echo " $_current_desc -> $(git describe --tags --always)"
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echo ""
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echo "If anything looks wrong:"
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echo " bash $PATCH_DIR/update.sh --rollback # back to $_current_desc"
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echo " bash $PATCH_DIR/recover.sh # kill switch + restart"
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