e6dab7b55f
Make it easier for other code to parse the fdsan table themselves by making it so that they can include the bionic_fdsan.h header to get a struct definition with the layout without bringing in other dependencies. Test: treehugger Change-Id: I3583ef113991234aa83cd193a4eb139ad06737c7
61 lines
2 KiB
C++
61 lines
2 KiB
C++
/*
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* Copyright (C) 2018 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#pragma once
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#include <android/fdsan.h>
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#include <errno.h>
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#include <stdatomic.h>
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#include <string.h>
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#include <sys/cdefs.h>
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#include <sys/mman.h>
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#include <sys/resource.h>
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#include <sys/user.h>
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struct FdEntry {
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_Atomic(uint64_t) close_tag;
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};
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struct FdTableOverflow {
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size_t len;
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FdEntry entries[0];
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};
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template <size_t inline_fds>
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struct FdTableImpl {
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uint32_t version; // currently 0, and hopefully it'll stay that way.
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_Atomic(android_fdsan_error_level) error_level;
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FdEntry entries[inline_fds];
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_Atomic(FdTableOverflow*) overflow;
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FdEntry* at(size_t idx);
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};
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using FdTable = FdTableImpl<128>;
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