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- /*
- * Copyright (C) 2021 Alibaba Group Holding Limited
- * Author: LuChongzhi <chongzhi.lcz@alibaba-inc.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
- #include <sys/wait.h>
- #include <sys/types.h>
- #include <sys/socket.h>
- #include <sys/un.h>
- union {
- struct cmsghdr cm; // control msg
- char ctl[CMSG_SPACE(sizeof(int))]; // the pointer of char
- } ctl_un;
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