Files
scylladb/utils
Pavel Emelyanov 14fd0d9c21 lister: Fix race between readdir and stat
Sometimes file::list_directory() returns entries without type set. In
thase case lister calls file_type() on the entry name to get it. In case
the call returns disengated type, the code assumes that some error
occurred and resolves into exception.

That's not correct. The file_type() method returns disengated type only
if the file being inspected is missing (i.e. on ENOENT errno). But this
can validly happen if a file is removed bettween readdir and stat. In
that case it's not "some error happened", but a enry should be just
skipped. In "some error happened", then file_type() would resolve into
exceptional future on its own.

Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>

Closes scylladb/scylladb#26595

(cherry picked from commit d9bfbeda9a)
Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>

Closes scylladb/scylladb#26754
2025-11-24 17:19:42 +03:00
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