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https://github.com/RGBCube/serenity
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This patch modifies InodeWatcher to switch to a one watcher, multiple watches architecture. The following changes have been made: - The watch_file syscall is removed, and in its place the create_iwatcher, iwatcher_add_watch and iwatcher_remove_watch calls have been added. - InodeWatcher now holds multiple WatchDescriptions for each file that is being watched. - The InodeWatcher file descriptor can be read from to receive events on all watched files. Co-authored-by: Gunnar Beutner <gunnar@beutner.name>
37 lines
841 B
C++
37 lines
841 B
C++
/*
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* Copyright (c) 2020-2021, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/EnumBits.h>
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#include <AK/Types.h>
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#ifdef KERNEL
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# include <LibC/limits.h>
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#else
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# include <limits.h>
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#endif
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struct [[gnu::packed]] InodeWatcherEvent {
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enum class Type : u32 {
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Invalid = 0,
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MetadataModified = 1 << 0,
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ContentModified = 1 << 1,
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Deleted = 1 << 2,
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ChildCreated = 1 << 3,
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ChildDeleted = 1 << 4,
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};
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int watch_descriptor { 0 };
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Type type { Type::Invalid };
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size_t name_length { 0 };
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// This is a VLA which is written during the read() from the descriptor.
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const char name[];
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};
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AK_ENUM_BITWISE_OPERATORS(InodeWatcherEvent::Type);
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constexpr unsigned MAXIMUM_EVENT_SIZE = sizeof(InodeWatcherEvent) + NAME_MAX + 1;
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