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fix(windows): resolve unknown type for renamed-dir contents

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This commit is contained in:
CJ van den Berg 2026-03-29 17:15:58 +02:00
parent ecdb311c89
commit 708997deac
Signed by: neurocyte
GPG key ID: 8EB1E1BB660E3FB9
1 changed files with 14 additions and 5 deletions
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19
src/backend/Windows.zig
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@ -197,6 +197,10 @@ fn thread_fn(
}
gop.value_ptr.* = ot;
}
// When a directory is renamed, scan its children so that
// subsequent delete events for contents can resolve their type.
if (ot == .dir and info.Action == FILE_ACTION_RENAMED_NEW_NAME)
scan_path_types_into(allocator, path_types, full_path);
break :blk ot;
};
// Capture next_entry_offset before releasing the mutex: after unlock,
@ -260,9 +264,14 @@ pub fn add_watch(self: *@This(), allocator: std.mem.Allocator, path: []const u8)
}
// Walk root recursively and seed path_types with the type of every entry.
// Called from add_watch (mutex already held) so pre-existing paths are
// known before any FILE_ACTION_REMOVED or FILE_ACTION_RENAMED_OLD_NAME fires.
// Called from add_watch and from thread_fn on directory renames so that
// FILE_ACTION_REMOVED events for children of a renamed directory can
// resolve their ObjectType from cache.
fn scan_path_types(self: *@This(), allocator: std.mem.Allocator, root: []const u8) void {
scan_path_types_into(allocator, &self.path_types, root);
}
fn scan_path_types_into(allocator: std.mem.Allocator, path_types: *std.StringHashMapUnmanaged(ObjectType), root: []const u8) void {
var dir = std.fs.openDirAbsolute(root, .{ .iterate = true }) catch return;
defer dir.close();
var iter = dir.iterate();
@ -274,15 +283,15 @@ fn scan_path_types(self: *@This(), allocator: std.mem.Allocator, root: []const u
};
var path_buf: [std.fs.max_path_bytes]u8 = undefined;
const full_path = std.fmt.bufPrint(&path_buf, "{s}\\{s}", .{ root, entry.name }) catch continue;
const gop = self.path_types.getOrPut(allocator, full_path) catch continue;
const gop = path_types.getOrPut(allocator, full_path) catch continue;
if (!gop.found_existing) {
gop.key_ptr.* = allocator.dupe(u8, full_path) catch {
_ = self.path_types.remove(full_path);
_ = path_types.remove(full_path);
continue;
};
}
gop.value_ptr.* = ot;
if (ot == .dir) self.scan_path_types(allocator, gop.key_ptr.*);
if (ot == .dir) scan_path_types_into(allocator, path_types, gop.key_ptr.*);
}
}