Commit Graph
3 Commits
Author SHA1 Message Date
sneak efc2b62a77 Hold a lock so a second scan fails at once (closes #53)
check / check (push) Successful in 2m22s
scan takes an exclusive flock(2) on a lock file beside the database
(its path with .lock appended) before it walks anything or opens the
database, and holds it until it returns. A second scan against the
same database fails at once with a one-line error naming the lock
file and exits 1. report and trees never take the lock. The lock ends
with the process, so a fatal error or an interrupt releases it; the
file is never deleted. golang.org/x/sys becomes a direct dependency.

The README smoke test now keeps the database outside the scanned
tree, where its empty lock file would have joined the empty-file
group.

Model: opus-5-5
2026-10-03 23:52:55 +00:00
sneak d8fbcb32c2 Implement persistent SQLite scan database
check / check (push) Successful in 3s
scan now synchronizes a database that survives between runs
(SFDUPES_DATABASE, default /var/lib/sfdupes/db.sqlite) instead of
emitting a stream: operands are resolved to absolute paths, unchanged
files (same size, mtime not newer than recorded) are never re-read, new
and changed files are hashed, and records under the scanned operands
that were not verified this run are deleted; records outside the
operands are untouched. All changes commit in a single transaction, and
WAL journaling with a busy timeout keeps a report run during a cron
scan safe.

report and trees read the database (no positional arguments); the
NUL-terminated stream format, its parser, and the malformed-record
handling are gone. The driver is modernc.org/sqlite (pure Go), so
builds keep cgo disabled.
2026-07-24 03:08:49 +07:00
sneak 1fad4a7d1c Add sfdupes implementation: scan, report, and trees subcommands 2026-07-22 22:06:22 +07:00