Skip excluded paths before looking at their errors (closes #16)

filepath.Walk hands its callback the error for a path it could not
read, such as a directory it cannot list. Both callbacks, in
walkAndProcess and countFiles, returned that error before they checked
the exclusions, so a directory that --exclude or --exclude-dotfiles
excluded still failed the run when it could not be listed. Given an
error, each callback now checks the exclusions first and skips an
excluded path. The new test excludes a directory that cannot be listed
and runs sum add and check over its parent.

Model: opus-5-5

.dockerignore

@@ -0,0 +1,63 @@
+# .dockerignore does NOT use .gitignore semantics. Docker matches with
+# moby/patternmatcher: filepath.Match plus `**`, so `*` does not cross
+# `/` and an unprefixed pattern is anchored at the context root. Every
+# depth-independent pattern therefore needs `**/`, or `config/.env` and
+# `certs/server.key` still ship while this file reads as solved. Only
+# genuinely root-anchored entries go unprefixed. Never transplant these
+# into .gitignore, where `**/` is wrong.
+#
+# Matching is case-sensitive, so secrets use character ranges rather
+# than an ALL-CAPS twin, which would still miss `Server.Key`.
+#
+# Extend with this repo's own host-built artifacts, written anchored:
+# `/myapp`, never `**/myapp`, which also matches `cmd/myapp/` and
+# deletes the package directory from the context.
+
+# .git is sent without its config. Without a VERSION build argument the
+# stage that compiles runs `git describe --tags --always` on .git, which
+# does not need .git/config; that file can hold a credential, such as a
+# password in a remote URL or the token the CI checkout step stores there.
+.git/config
+
+# Agent scratch: one full checkout of the repo per in-flight agent.
+# Anchored because it occurs once where agents run at the repo root.
+# KNOWN GAP: a repo running agents in subdirectories still ships
+# `services/api/.claude/` and must add its own anchored entry.
+.claude
+
+# Environment files. `*.env` covers bare `.env` and the `prod.env`
+# convention. Re-include a committed template with a negation if the
+# build needs one: `!docs/example.env`.
+**/*.[eE][nN][vV]
+**/.[eE][nN][vV].*
+**/.[eE][nN][vV][rR][cC]
+
+# Private keys and the bundles carrying them. Public certificates
+# (*.crt, *.cer) are deliberately absent: they are legitimate inputs.
+**/*.[pP][eE][mM]
+**/*.[kK][eE][yY]
+**/*.[pP]12
+**/*.[pP][fF][xX]
+**/[iI][dD]_[rR][sS][aA]
+**/[iI][dD]_[dD][sS][aA]
+**/[iI][dD]_[eE][cC][dD][sS][aA]
+**/[iI][dD]_[eE][dD]25519
+
+# Dependencies: restored inside the image, never copied in.
+**/node_modules
+
+# OS metadata.
+**/.DS_Store
+**/Thumbs.db
+
+# Editor state: never a build input, and it churns COPY.
+**/*.swp
+**/*.swo
+**/*~
+**/*.bak
+**/.idea
+**/.vscode
+**/*.sublime-*
+
+# This repo's host-built binary (`make build`); the image builds its own.
+/attrsum

.gitea/workflows/check.yml

@@ -6,4 +6,8 @@ jobs:
         steps:
             # actions/checkout v4.2.2, 2026-02-28
             - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
+              # Full history and tags, so the build stamps the same
+              # `git describe` version as a full clone.
+              with:
+                  fetch-depth: 0
             - run: script/cibuild

.golangci.yml

@@ -1,21 +1,30 @@
 version: "2"
 
+# Config schema uses the golangci-lint v2 layout (settings live under
+# linters.settings, not top-level linters-settings) so that the
+# thresholds below are actually applied by golangci-lint >= v2.
+
 run:
   timeout: 5m
   modules-download-mode: readonly
 
 linters:
   default: all
+  enable:
+    # Successor to the deprecated gomodguard. Named explicitly, rather than
+    # left to `default: all`, because it carries the module policy below.
+    - gomodguard_v2
   disable:
     # Genuinely incompatible with project patterns
     - exhaustruct      # Requires all struct fields
-    - depguard         # Dependency allow/block lists
     - godot            # Requires comments to end with periods
-    - wsl              # Deprecated, replaced by wsl_v5
     - wrapcheck        # Too verbose for internal packages
     - varnamelen       # Short names like db, id are idiomatic Go
-
-linters-settings:
+    # Deprecated: the warning is attached to the old name, so it is
+    # silenced by disabling that name, not by enabling the successor.
+    - wsl              # Deprecated, replaced by wsl_v5
+    - gomodguard       # Deprecated, replaced by gomodguard_v2
+  settings:
     lll:
       line-length: 88
     funlen:
@@ -25,8 +34,65 @@ linters-settings:
       max-complexity: 15
     dupl:
       threshold: 100
+    depguard:
+      # Test-support code must not be compiled into the shipped binary. A
+      # test-support package exists to hand a test privileges the program
+      # itself must never have, so a file that is not a test must not import
+      # one. Test files, and the files inside a package whose directory name
+      # ends in `test`, are where that code belongs, and are exempt.
+      #
+      # The deny list below is the one part of this file a repository is
+      # expected to extend, and the only part it may. depguard matches an
+      # import path against a list of prefixes, so it cannot be told "any path
+      # whose last segment ends in test"; a repository's own test-support
+      # packages have to be named here one at a time, by full import path,
+      # under a module path that differs from repository to repository. Add
+      # them; change nothing else.
+      rules:
+        test-support:
+          list-mode: lax
+          files:
+            - "$all"
+            - "!$test"
+            - "!**/*test/**"
+          deny:
+            - pkg: net/http/httptest
+              desc: >-
+                Test-support code belongs in test files and in packages whose
+                directory name ends in test, not in the shipped binary.
+    # Only decisions already recorded in the Go package defaults are
+    # listed here. Every entry matches the module path exactly.
+    gomodguard_v2:
+      blocked:
+        - module: github.com/rs/zerolog
+          recommendations:
+            - log/slog
+          reason: "Structured logging is stdlib log/slog."
+        # One entry per pre-fork module path, because the later releases
+        # are separate paths. A prefix match would be shorter but would
+        # also reach github.com/go-redis/redismock, the test double for
+        # the successor these entries recommend.
+        - module: github.com/go-redis/redis
+          recommendations:
+            - github.com/redis/go-redis/v9
+          reason: "Pre-fork module; use the maintained go-redis v9."
+        - module: github.com/go-redis/redis/v7
+          recommendations:
+            - github.com/redis/go-redis/v9
+          reason: "Pre-fork module; use the maintained go-redis v9."
+        - module: github.com/go-redis/redis/v8
+          recommendations:
+            - github.com/redis/go-redis/v9
+          reason: "Pre-fork module; use the maintained go-redis v9."
+        - module: github.com/sergi/go-diff
+          recommendations:
+            - github.com/aymanbagabas/go-udiff
+          reason: "No unified diff output; use go-udiff."
+        - module: github.com/hexops/gotextdiff
+          recommendations:
+            - github.com/aymanbagabas/go-udiff
+          reason: "Unmaintained fork; use go-udiff."
 
 issues:
-  exclude-use-default: false
   max-issues-per-linter: 0
   max-same-issues: 0

Dockerfile

@@ -4,8 +4,8 @@ FROM golang@sha256:f6751d823c26342f9506c03797d2527668d095b0a15f1862cddb4d927a7a4
 
 RUN apk add --no-cache git make gcc musl-dev binutils-gold
 
-# golangci-lint v2.10.1
-RUN go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@5d1e709b7be35cb2025444e19de266b056b7b7ee
+# golangci-lint v2.12.2, 2026-10-05
+RUN go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@c0d3ddc9cf3faa61a4e378e879ece580256d76e5
 # goimports v0.42.0
 RUN go install golang.org/x/tools/cmd/goimports@009367f5c17a8d4c45a961a3a509277190a9a6f0
 
@@ -29,7 +29,21 @@ RUN make check
 
 # Build the binary (still as the unprivileged user: it owns /src, so git VCS
 # stamping sees consistent ownership).
-RUN make build
+#
+# The version stamped into the binary: the VERSION build argument when one
+# is given, otherwise `git describe --tags --always` of the .git the build
+# context carries: the tag on a tagged commit, tag-N-gHASH on a commit after
+# one, the short commit when no tag is reachable. A context that carries .git
+# and still yields no version fails the build. With neither, as from a source
+# tarball, the binary reports dev.
+ARG VERSION
+RUN version="${VERSION:-$(git describe --tags --always)}"; \
+    if [ -e .git ] && { [ -z "$version" ] || [ "$version" = dev ] || \
+        [ "$version" = unknown ]; }; then \
+        echo "version is '$version' although .git is present" >&2; \
+        exit 1; \
+    fi; \
+    make build VERSION="${version:-dev}"
 
 # Runtime stage
 # alpine 3.21, 2026-02-28

Makefile

@@ -1,6 +1,9 @@
 .PHONY: default bootstrap setup test lint fmt fmt-check check docker hooks build clean try
 
-TESTDIR := $(HOME)/Documents/_SYSADMIN/cyberdyne
+# The version `make build` stamps into the binary: the git tag or short
+# commit, -dirty with uncommitted changes. `make build VERSION=x` stamps x,
+# which is how the Dockerfile passes its version in.
+VERSION ?= $(shell git describe --tags --always --dirty 2>/dev/null || echo dev)
 
 # Standard targets are thin shims; the implementations live in script/
 # per the scripts-to-rule-them-all pattern.
@@ -35,18 +38,27 @@ hooks:
 	@script/install-precommit
 
 build: clean
-	@go build .
+	@go build -ldflags "-X main.Version=$(VERSION)" .
 
 clean:
 	@rm -f attrsum
 
+# Runs the binary on three small files in a new temporary directory, which
+# the trap removes when the recipe ends, also when a step fails. The check
+# after clear is expected to fail, so its exit status is ignored.
 try: build
-	./attrsum sum add -v $(TESTDIR)
-	./attrsum check -v $(TESTDIR)
-	./attrsum clear -v $(TESTDIR)
-	-./attrsum check -v $(TESTDIR)
-	./attrsum sum add -v $(TESTDIR)
-	./attrsum check -v $(TESTDIR)
-	touch $(TESTDIR)/*
-	./attrsum sum update -v $(TESTDIR)
-	./attrsum check -v $(TESTDIR)
+	@set -ex; \
+	dir=$$(mktemp -d); \
+	trap 'rm -rf "$$dir"' EXIT; \
+	echo one >"$$dir/a"; \
+	echo two >"$$dir/b"; \
+	echo three >"$$dir/c"; \
+	./attrsum sum add -v "$$dir"; \
+	./attrsum check -v "$$dir"; \
+	./attrsum clear -v "$$dir"; \
+	./attrsum check -v "$$dir" || true; \
+	./attrsum sum add -v "$$dir"; \
+	./attrsum check -v "$$dir"; \
+	touch "$$dir"/*; \
+	./attrsum sum update -v "$$dir"; \
+	./attrsum check -v "$$dir"

TODO.md

@@ -20,12 +20,29 @@ have landed since the tag.
 Policy scaffold commit: add LICENSE, REPO_POLICIES.md, .editorconfig,
 .golangci.yml, and a comprehensive .gitignore (currently only the
 attrsum binary), and extend the Makefile (only test/build/clean/try
-today) with lint, fmt, fmt-check, check, and hooks targets. Fix the try
-target to use a temp fixture instead of the hardcoded
-$(HOME)/Documents/_SYSADMIN/cyberdyne path.
+today) with lint, fmt, fmt-check, check, and hooks targets.
 
 # Completed Steps
 
+* 2026-10-06: a path that `--exclude` or `--exclude-dotfiles` excludes
+    is skipped even when it cannot be read, so an excluded directory
+    that cannot be listed no longer fails the run
+* 2026-10-06: `check --continue` keeps going past a file or directory
+    it cannot read: it counts it as failed, prints the error and the
+    path on stderr, and checks the rest of the tree
+* 2026-10-05: golangci-lint settings take effect: canonical
+    `.golangci.yml` (v2 layout, settings under `linters.settings`),
+    golangci-lint pinned at v2.12.2 in `Dockerfile` and
+    `script/bootstrap`, and the code fixed for what the settings now
+    report (long lines in `attrsum.go` rewrapped)
+* 2026-10-05: `make try` runs on three small files in a temporary
+    directory that it removes afterwards, also when a step fails,
+    instead of on a fixed directory on one person's machine
+* 2026-10-02: `attrsum --version` reports the git tag or short commit,
+    stamped by `make build` and by a plain `docker build .` of a clone;
+    `.dockerignore` sends `.git` without `.git/config` and keeps a
+    host-built `attrsum` out; CI checks out full history so it stamps
+    the same version
 * 2026-02-02: correctness pass: track actual bytes read instead of
     stale file size, atomic failure tracking in ProcessCheck, detect
     file modification during checksum (TOCTOU), propagate countFiles
@@ -39,8 +56,6 @@ $(HOME)/Documents/_SYSADMIN/cyberdyne path.
 
 # Future Steps
 
-* Add Dockerfile and .dockerignore that run make check, images pinned
-    by sha256, plus a Makefile docker target
 * Add .gitea/workflows/check.yml
 * Restructure README.md into the standard sections: Description,
     Getting Started, Rationale, Design, TODO, License, Author (Getting

attrsum.go

@@ -36,6 +36,10 @@ const (
 	progressThrottle = 250 * time.Millisecond
 )
 
+// Version is the git tag or short commit, set at link time with -X by
+// `make build`. A build that does not set it reports dev.
+var Version = "dev" //nolint:gochecknoglobals // set at link time with -X
+
 // Sentinel errors returned by the command implementations.
 var (
 	errNoPaths           = errors.New("no paths provided")
@@ -72,7 +76,8 @@ func (s *Stats) Print(opts *options, operation string) {
 		return
 	}
 
-	fmt.Fprintf(os.Stderr, "\n%s complete: %d files processed, %d skipped, %d failed, %s bytes in %s\n",
+	fmt.Fprintf(os.Stderr,
+		"\n%s complete: %d files processed, %d skipped, %d failed, %s bytes in %s\n",
 		operation,
 		s.FilesProcessed,
 		s.FilesSkipped,
@@ -103,6 +108,7 @@ func main() {
 	rootCmd := &cobra.Command{
 		Use:     "attrsum",
 		Short:   "Compute and verify file checksums via xattrs",
+		Version: Version,
 	}
 	rootCmd.SilenceUsage = true
 	rootCmd.SilenceErrors = true
@@ -166,12 +172,16 @@ func expandPaths(args []string) ([]string, error) {
 }
 
 // processFunc processes a single path within a command's run loop.
-type processFunc func(opts *options, path string, stats *Stats, bar *progressbar.ProgressBar) error
+type processFunc func(
+	opts *options, path string, stats *Stats, bar *progressbar.ProgressBar,
+) error
 
 // countAndBar counts the files under paths and returns a progress bar sized
 // to that total. It always returns either a non-nil bar or a non-nil error.
-func countAndBar(opts *options, paths []string, desc string) (*progressbar.ProgressBar, error) {
-	total, err := countFilesMultiple(opts, paths)
+func countAndBar(
+	opts *options, paths []string, desc string, cont bool,
+) (*progressbar.ProgressBar, error) {
+	total, err := countFilesMultiple(opts, paths, cont)
 	if err != nil {
 		return nil, err
 	}
@@ -188,7 +198,9 @@ func finishBar(bar *progressbar.ProgressBar) {
 
 // runOverPaths runs process over each path, sharing the progress/stats
 // bookkeeping common to the sum-add, sum-update and clear commands.
-func runOverPaths(opts *options, args []string, desc, op string, process processFunc) error {
+func runOverPaths(
+	opts *options, args []string, desc, op string, process processFunc,
+) error {
 	paths, err := expandPaths(args)
 	if err != nil {
 		return err
@@ -199,7 +211,7 @@ func runOverPaths(opts *options, args []string, desc, op string, process process
 	var bar *progressbar.ProgressBar
 
 	if !opts.quiet {
-		bar, err = countAndBar(opts, paths, desc)
+		bar, err = countAndBar(opts, paths, desc, false)
 		if err != nil {
 			return err
 		}
@@ -253,8 +265,11 @@ func newSumCmd(opts *options) *cobra.Command {
 	return cmd
 }
 
-func processSumAdd(opts *options, dir string, stats *Stats, bar *progressbar.ProgressBar) error {
-	return walkAndProcess(opts, dir, stats, bar, func(p string, info os.FileInfo, s *Stats) error {
+func processSumAdd(
+	opts *options, dir string, stats *Stats, bar *progressbar.ProgressBar,
+) error {
+	return walkAndProcess(opts, dir, false, stats, bar,
+		func(p string, info os.FileInfo, s *Stats) error {
 			if hasXattr(p, checksumKey) {
 				atomic.AddInt64(&s.FilesSkipped, 1)
 
@@ -272,8 +287,11 @@ func processSumAdd(opts *options, dir string, stats *Stats, bar *progressbar.Pro
 		})
 }
 
-func processSumUpdate(opts *options, dir string, stats *Stats, bar *progressbar.ProgressBar) error {
-	return walkAndProcess(opts, dir, stats, bar, func(p string, info os.FileInfo, s *Stats) error {
+func processSumUpdate(
+	opts *options, dir string, stats *Stats, bar *progressbar.ProgressBar,
+) error {
+	return walkAndProcess(opts, dir, false, stats, bar,
+		func(p string, info os.FileInfo, s *Stats) error {
 			t, err := readSumTime(p)
 			if err != nil || info.ModTime().After(t) {
 				werr := writeChecksumAndTime(opts, p, info, s)
@@ -292,7 +310,9 @@ func processSumUpdate(opts *options, dir string, stats *Stats, bar *progressbar.
 		})
 }
 
-func writeChecksumAndTime(opts *options, path string, info os.FileInfo, stats *Stats) error {
+func writeChecksumAndTime(
+	opts *options, path string, info os.FileInfo, stats *Stats,
+) error {
 	// Record mtime before hashing to detect modifications during hash.
 	mtimeBefore := info.ModTime()
 
@@ -363,8 +383,11 @@ func newClearCmd(opts *options) *cobra.Command {
 	}
 }
 
-func processClear(opts *options, dir string, stats *Stats, bar *progressbar.ProgressBar) error {
-	return walkAndProcess(opts, dir, stats, bar, func(p string, info os.FileInfo, s *Stats) error {
+func processClear(
+	opts *options, dir string, stats *Stats, bar *progressbar.ProgressBar,
+) error {
+	return walkAndProcess(opts, dir, false, stats, bar,
+		func(p string, info os.FileInfo, s *Stats) error {
 			cleared, err := clearOne(opts, p)
 			if err != nil {
 				atomic.AddInt64(&s.FilesFailed, 1)
@@ -428,7 +451,8 @@ func newCheckCmd(opts *options) *cobra.Command {
 			return runCheck(opts, a, cont)
 		},
 	}
-	cmd.Flags().BoolVar(&cont, "continue", false, "continue after errors and report each file")
+	cmd.Flags().BoolVar(&cont, "continue", false,
+		"continue after errors and report each file")
 
 	return cmd
 }
@@ -444,7 +468,7 @@ func runCheck(opts *options, args []string, cont bool) error {
 	var bar *progressbar.ProgressBar
 
 	if !opts.quiet {
-		bar, err = countAndBar(opts, paths, "Verifying checksums")
+		bar, err = countAndBar(opts, paths, "Verifying checksums", cont)
 		if err != nil {
 			return err
 		}
@@ -472,11 +496,14 @@ func runCheck(opts *options, args []string, cont bool) error {
 	return finalErr
 }
 
-func processCheck(opts *options, dir string, cont bool, stats *Stats, bar *progressbar.ProgressBar) error {
+func processCheck(
+	opts *options, dir string, cont bool, stats *Stats, bar *progressbar.ProgressBar,
+) error {
 	// Track initial failed count to detect failures during this walk.
 	initialFailed := atomic.LoadInt64(&stats.FilesFailed)
 
-	err := walkAndProcess(opts, dir, stats, bar, func(p string, _ os.FileInfo, s *Stats) error {
+	err := walkAndProcess(opts, dir, cont, stats, bar,
+		func(p string, _ os.FileInfo, s *Stats) error {
 			return checkOne(opts, p, cont, s)
 		})
 	if err != nil {
@@ -500,7 +527,7 @@ func checkOne(opts *options, p string, cont bool, s *Stats) error {
 	exp, err := xattr.Get(p, checksumKey)
 	if err != nil {
 		if !errors.Is(err, xattr.ENOATTR) {
-			return err
+			return unreadable(cont, s, err)
 		}
 
 		return missingChecksum(opts, p, cont, s)
@@ -508,9 +535,7 @@ func checkOne(opts *options, p string, cont bool, s *Stats) error {
 
 	act, bytesRead, err := fileMultihash(p)
 	if err != nil {
-		atomic.AddInt64(&s.FilesFailed, 1)
-
-		return err
+		return unreadable(cont, s, err)
 	}
 
 	ok := bytes.Equal(exp, act)
@@ -546,6 +571,21 @@ func missingChecksum(opts *options, p string, cont bool, s *Stats) error {
 	return errVerification
 }
 
+// unreadable counts a file or directory that could not be read as failed.
+// With --continue it prints err, which names the path, to stderr and
+// returns nil so the walk goes on; otherwise it returns err.
+func unreadable(cont bool, s *Stats, err error) error {
+	atomic.AddInt64(&s.FilesFailed, 1)
+
+	if !cont {
+		return err
+	}
+
+	log.Print(err)
+
+	return nil
+}
+
 // reportCheck prints a per-file verification result when verbose output is on.
 func reportCheck(opts *options, p, actual string, ok bool) {
 	if !opts.verbose || opts.quiet {
@@ -565,12 +605,24 @@ func reportCheck(opts *options, p, actual string, ok bool) {
 ///////////////////////////////////////////////////////////////////////////////
 
 // countFiles counts the total number of regular files that will be processed.
-func countFiles(opts *options, root string) (int64, error) {
+// With cont, a path it cannot read is left out of the count instead of ending
+// it; the walk that follows reports that path as failed.
+func countFiles(opts *options, root string, cont bool) (int64, error) {
 	var count int64
 
 	root = filepath.Clean(root)
 
 	err := filepath.Walk(root, func(p string, info os.FileInfo, err error) error {
+		// An excluded path is skipped whatever went wrong reading it.
+		rel, _ := filepath.Rel(root, p)
+		if err != nil && shouldExclude(opts, rel) {
+			return nil
+		}
+
+		if err != nil && cont {
+			return nil
+		}
+
 		if err != nil {
 			return err
 		}
@@ -581,7 +633,6 @@ func countFiles(opts *options, root string) (int64, error) {
 			return nil
 		}
 
-		rel, _ := filepath.Rel(root, p)
 		if shouldExclude(opts, rel) {
 			if info.IsDir() {
 				return filepath.SkipDir
@@ -605,11 +656,11 @@ func countFiles(opts *options, root string) (int64, error) {
 }
 
 // countFilesMultiple counts files across multiple roots.
-func countFilesMultiple(opts *options, roots []string) (int64, error) {
+func countFilesMultiple(opts *options, roots []string, cont bool) (int64, error) {
 	var total int64
 
 	for _, root := range roots {
-		count, err := countFiles(opts, root)
+		count, err := countFiles(opts, root, cont)
 		if err != nil {
 			return total, err
 		}
@@ -645,6 +696,7 @@ func newProgressBar(total int64, description string) *progressbar.ProgressBar {
 func walkAndProcess(
 	opts *options,
 	root string,
+	cont bool,
 	stats *Stats,
 	bar *progressbar.ProgressBar,
 	fn func(string, os.FileInfo, *Stats) error,
@@ -652,8 +704,14 @@ func walkAndProcess(
 	root = filepath.Clean(root)
 
 	return filepath.Walk(root, func(p string, info os.FileInfo, err error) error {
+		// An excluded path is skipped whatever went wrong reading it.
+		rel, _ := filepath.Rel(root, p)
+		if err != nil && shouldExclude(opts, rel) {
+			return nil
+		}
+
 		if err != nil {
-			return err
+			return unreadable(cont, stats, err)
 		}
 
 		skip, skipErr := walkSkip(opts, root, p, info)
@@ -742,7 +800,8 @@ func hasXattr(path, key string) bool {
 func fileMultihash(path string) ([]byte, int64, error) {
 	// The path is supplied by the operator as the tree to checksum; reading
 	// it is the entire purpose of the tool.
-	f, err := os.Open(path) //nolint:gosec // G304: operator-specified path is the intended input
+	//nolint:gosec // G304: operator-specified path is the intended input
+	f, err := os.Open(path)
 	if err != nil {
 		return nil, 0, err
 	}

attrsum_test.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"errors"
 	"os"
 	"path/filepath"
 	"strings"
@@ -213,6 +214,54 @@ func TestExcludeDotfilesAndPatterns(t *testing.T) {
 	}
 }
 
+func TestExcludeUnreadableDir(t *testing.T) {
+	t.Parallel()
+
+	opts := &options{excludePatterns: []string{"locked"}}
+	dir := t.TempDir()
+	skipIfNoXattr(t, dir)
+
+	keep := writeFile(t, dir, "keep.txt", "keep")
+	hidden := writeFile(t, dir, "locked/a.txt", "hidden")
+
+	// The excluded directory cannot be listed.
+	sub := filepath.Join(dir, "locked")
+
+	err := os.Chmod(sub, noPerm)
+	if err != nil {
+		t.Fatalf("chmod dir: %v", err)
+	}
+
+	defer func() { _ = os.Chmod(sub, dirPerm) }()
+
+	err = processSumAdd(opts, dir, newTestStats(), nil)
+	if err != nil {
+		t.Fatalf("add: %v", err)
+	}
+
+	_, err = xattr.Get(keep, checksumKey)
+	if err != nil {
+		t.Fatalf("expected xattr on keep.txt: %v", err)
+	}
+
+	// Without --quiet, runCheck counts the files for the progress bar
+	// before it checks any, so this also covers the count.
+	err = runCheck(opts, []string{dir}, false)
+	if err != nil {
+		t.Fatalf("check: %v", err)
+	}
+
+	err = os.Chmod(sub, dirPerm)
+	if err != nil {
+		t.Fatalf("chmod dir back: %v", err)
+	}
+
+	_, err = xattr.Get(hidden, checksumKey)
+	if err == nil {
+		t.Fatalf("locked/a.txt should have been excluded")
+	}
+}
+
 func TestSkipBrokenSymlink(t *testing.T) {
 	t.Parallel()
 
@@ -271,3 +320,59 @@ func TestPermissionErrors(t *testing.T) {
 		t.Fatalf("expected permission error on check, got nil")
 	}
 }
+
+func TestCheckContinuePastUnreadable(t *testing.T) {
+	t.Parallel()
+
+	opts := &options{}
+	dir := t.TempDir()
+	skipIfNoXattr(t, dir)
+
+	writeFile(t, dir, "a.txt", "one")
+	secret := writeFile(t, dir, "b.txt", "two")
+	writeFile(t, dir, "c/d.txt", "three")
+	writeFile(t, dir, "e.txt", "four")
+
+	err := processSumAdd(opts, dir, newTestStats(), nil)
+	if err != nil {
+		t.Fatalf("add: %v", err)
+	}
+
+	// An unreadable file and an unlistable directory sit between the
+	// readable files a.txt and e.txt.
+	sub := filepath.Join(dir, "c")
+
+	err = os.Chmod(secret, noPerm)
+	if err != nil {
+		t.Fatalf("chmod file: %v", err)
+	}
+
+	defer func() { _ = os.Chmod(secret, filePerm) }()
+
+	err = os.Chmod(sub, noPerm)
+	if err != nil {
+		t.Fatalf("chmod dir: %v", err)
+	}
+
+	defer func() { _ = os.Chmod(sub, dirPerm) }()
+
+	stats := newTestStats()
+
+	err = processCheck(opts, dir, true, stats, nil)
+	if !errors.Is(err, errVerification) {
+		t.Fatalf("expected verification error, got %v", err)
+	}
+
+	if stats.FilesProcessed != 2 || stats.FilesFailed != 2 {
+		t.Fatalf("expected 2 verified and 2 failed, got %d and %d",
+			stats.FilesProcessed, stats.FilesFailed)
+	}
+
+	// Without --quiet, runCheck counts the files for the progress bar
+	// before it checks any, so the count reaches the unlistable directory
+	// first.
+	err = runCheck(opts, []string{dir}, true)
+	if !errors.Is(err, errVerification) {
+		t.Fatalf("expected verification error from runCheck, got %v", err)
+	}
+}

script/bootstrap

@@ -9,9 +9,9 @@ set -eu
 
 ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
 
-# Pinned versions, 2026-07-07 (same pins as the Dockerfile)
-# golangci-lint v2.10.1
-GOLANGCI_LINT_REF="github.com/golangci/golangci-lint/v2/cmd/golangci-lint@5d1e709b7be35cb2025444e19de266b056b7b7ee"
+# Pinned versions, 2026-10-05 (same pins as the Dockerfile)
+# golangci-lint v2.12.2
+GOLANGCI_LINT_REF="github.com/golangci/golangci-lint/v2/cmd/golangci-lint@c0d3ddc9cf3faa61a4e378e879ece580256d76e5"
 # goimports v0.42.0
 GOIMPORTS_REF="golang.org/x/tools/cmd/goimports@009367f5c17a8d4c45a961a3a509277190a9a6f0"
 

script/docker

@@ -1,6 +1,8 @@
 #!/bin/sh
 # script/docker: build the Docker image tagged with the project name.
 # Identical in all repos; the tag comes from script/projectname.
+# --no-cache because the gate phases the final stage depends on are RUN
+# steps, and a cached one is a check that did not run.
 set -eu
 
 SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd -P)"
@@ -8,7 +10,15 @@ ROOT="$(cd "$SCRIPT_DIR/.." && pwd -P)"
 
 main() {
     cd "$ROOT"
-    docker build -t "$("$SCRIPT_DIR/projectname")" .
+    # Own line: a failing command substitution inside an argument does
+    # not trip `set -e`, so the inline form degrades silently to an
+    # empty constant. The VERSION build argument takes precedence over
+    # the version a build stage derives from the .git in the context.
+    version="$(git describe --tags --always --dirty 2>/dev/null || true)"
+    [ -n "$version" ] || version="unknown"
+    docker build --no-cache \
+        --build-arg VERSION="$version" \
+        -t "$("$SCRIPT_DIR/projectname")" .
 }
 
 main "$@"