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#include <endian.h>
struct msghdr {
void *msg_name;
socklen_t msg_namelen;
struct iovec *msg_iov;
#if __BYTE_ORDER == __BIG_ENDIAN
int __pad1, msg_iovlen;
#else
int msg_iovlen, __pad1;
#endif
void *msg_control;
#if __BYTE_ORDER == __BIG_ENDIAN
int __pad2;
socklen_t msg_controllen;
#else
socklen_t msg_controllen;
int __pad2;
#endif
int msg_flags;
};
struct cmsghdr {
#if __BYTE_ORDER == __BIG_ENDIAN
int __pad1;
socklen_t cmsg_len;
#else
socklen_t cmsg_len;
int __pad1;
#endif
int cmsg_level;
int cmsg_type;
};
#define SO_DEBUG 1
#define SO_REUSEADDR 2
#define SO_TYPE 3
#define SO_ERROR 4
#define SO_DONTROUTE 5
#define SO_BROADCAST 6
#define SO_SNDBUF 7
#define SO_RCVBUF 8
#define SO_KEEPALIVE 9
#define SO_OOBINLINE 10
#define SO_NO_CHECK 11
#define SO_PRIORITY 12
#define SO_LINGER 13
#define SO_BSDCOMPAT 14
#define SO_REUSEPORT 15
#define SO_RCVLOWAT 16
#define SO_SNDLOWAT 17
#define SO_RCVTIMEO 18
#define SO_SNDTIMEO 19
#define SO_PASSCRED 20
#define SO_PEERCRED 21
#define SO_ACCEPTCONN 30
#define SO_PEERSEC 31
#define SO_SNDBUFFORCE 32
#define SO_RCVBUFFORCE 33
#define SO_PROTOCOL 38
#define SO_DOMAIN 39
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