blob: f0d58917ba03e311c524bbe835cde838f9427102 [file] [log] [blame]
// Copyright 2017 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#pragma once
#ifndef __Fuchsia__
#error "Fuchsia-only header"
#include <fbl/intrusive_double_list.h>
#include <fbl/macros.h>
#include <fbl/mutex.h>
#include <fbl/unique_ptr.h>
#include <fs/vfs.h>
#include <zircon/device/vfs.h>
#include <lib/zx/channel.h>
namespace fs {
// Implements directory watching , holding a list of watchers
class WatcherContainer {
zx_status_t WatchDir(Vfs* vfs, Vnode* vn, uint32_t mask, uint32_t options,
zx::channel watcher);
// Notifies all VnodeWatchers in the watch list, if their mask
// indicates they are interested in the incoming event.
void Notify(fbl::StringPiece name, unsigned event);
// A simple structure which holds a channel to a watching client,
// as well as a mask of signals they are interested in hearing about.
struct VnodeWatcher : public fbl::DoublyLinkedListable<fbl::unique_ptr<VnodeWatcher>> {
VnodeWatcher(zx::channel h, uint32_t mask);
zx::channel h;
uint32_t mask;
fbl::Mutex lock_;
fbl::DoublyLinkedList<fbl::unique_ptr<VnodeWatcher>> watch_list_ __TA_GUARDED(lock_);