blob: 18882ca6e6651af5797cb7a9ed8f184e48de0364 [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.
#include "src/storage/memfs/vnode.h"
#include "src/storage/memfs/dnode.h"
namespace memfs {
std::atomic<uint64_t> Vnode::ino_ctr_ = 0;
std::atomic<uint64_t> Vnode::deleted_ino_ctr_ = 0;
Vnode::Vnode(PlatformVfs* vfs)
: fs::Vnode(vfs), ino_(ino_ctr_.fetch_add(1, std::memory_order_relaxed)) {
ZX_DEBUG_ASSERT(vfs);
std::timespec ts;
if (std::timespec_get(&ts, TIME_UTC)) {
create_time_ = modify_time_ = zx_time_from_timespec(ts);
}
}
Vnode::~Vnode() { deleted_ino_ctr_.fetch_add(1, std::memory_order_relaxed); }
zx_status_t Vnode::SetAttributes(fs::VnodeAttributesUpdate attr) {
if (attr.has_modification_time()) {
modify_time_ = attr.take_modification_time();
}
if (attr.any()) {
// any unhandled field update is unsupported
return ZX_ERR_INVALID_ARGS;
}
return ZX_OK;
}
void Vnode::Sync(SyncCallback closure) {
// Since this filesystem is in-memory, all data is already up-to-date in
// the underlying storage
closure(ZX_OK);
}
void Vnode::UpdateModified() {
std::timespec ts;
if (std::timespec_get(&ts, TIME_UTC)) {
modify_time_ = zx_time_from_timespec(ts);
} else {
modify_time_ = 0;
}
#ifdef __Fuchsia__
// Notify current vnode.
CheckInotifyFilterAndNotify(fuchsia_io::wire::InotifyWatchMask::kModify);
// Notify all parent vnodes.
for (auto parent = dnode_parent_; parent != nullptr; parent = parent->GetParent()) {
parent->AcquireVnode()->CheckInotifyFilterAndNotify(
fuchsia_io::wire::InotifyWatchMask::kModify);
}
#endif
}
} // namespace memfs