libc/codeaurora/PropClientDispatchWrite.cpp

/*
 * Copyright (c) 2016, The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above
 *     copyright notice, this list of conditions and the following
 *     disclaimer in the documentation and/or other materials provided
 *     with the distribution.
 *   * Neither the name of The Linux Foundation nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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 */
#include "codeaurora/PropClientDispatchWrite.h"

#ifdef __i386__
#define __socketcall __attribute__((__cdecl__))
#else
#define __socketcall
#endif

void fallBackPropWrite(const int /*fd*/) {
}

void fallBackPropWritev(const int /*fd*/) {
}

extern "C" __socketcall int __sendmsg(int fd, const struct msghdr* msg, unsigned int flags);
extern "C" __socketcall int __sendto(int, const void*, size_t, int, const struct sockaddr*, socklen_t);

// This structure is modified only at startup (when libc.so is loaded) and never
// afterwards, so it's okay that it's read later at runtime without a lock.
PropClientDispatchWrite __propClientDispatchWrite __attribute__((aligned(32))) = {
    fallBackPropWrite,
    fallBackPropWritev,
    __sendmsg,
    __sendto,
};