60 lines
2.3 KiB
C
60 lines
2.3 KiB
C
/*
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* Copyright (C) 2008 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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/**
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* @file sys/sendfile.h
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* @brief The sendfile() function.
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*/
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#include <sys/cdefs.h>
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#include <sys/types.h>
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__BEGIN_DECLS
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/* See https://android.googlesource.com/platform/bionic/+/main/docs/32-bit-abi.md */
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#if defined(__USE_FILE_OFFSET64)
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ssize_t sendfile(int __out_fd, int __in_fd, off_t* _Nullable __offset, size_t __count) __RENAME(sendfile64);
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#else
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/**
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* [sendfile(2)](http://man7.org/linux/man-pages/man2/sendfile.2.html) copies data directly
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* between two file descriptors.
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*
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* Returns the number of bytes copied on success, and returns -1 and sets `errno` on failure.
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*/
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ssize_t sendfile(int __out_fd, int __in_fd, off_t* _Nullable __offset, size_t __count);
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#endif
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/**
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* Like sendfile() but allows using a 64-bit offset
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* even from a 32-bit process without `_FILE_OFFSET_BITS=64`.
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*/
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ssize_t sendfile64(int __out_fd, int __in_fd, off64_t* _Nullable __offset, size_t __count);
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__END_DECLS
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