#include <bits/socket.h>
+struct msghdr {
+ void *msg_name;
+ socklen_t msg_namelen;
+ struct iovec *msg_iov;
+#if __LONG_MAX > 0x7fffffff && __BYTE_ORDER == __BIG_ENDIAN
+ int __pad1;
+#endif
+ int msg_iovlen;
+#if __LONG_MAX > 0x7fffffff && __BYTE_ORDER == __LITTLE_ENDIAN
+ int __pad1;
+#endif
+ void *msg_control;
+#if __LONG_MAX > 0x7fffffff && __BYTE_ORDER == __BIG_ENDIAN
+ int __pad2;
+#endif
+ socklen_t msg_controllen;
+#if __LONG_MAX > 0x7fffffff && __BYTE_ORDER == __LITTLE_ENDIAN
+ int __pad2;
+#endif
+ int msg_flags;
+};
+
+struct cmsghdr {
+#if __LONG_MAX > 0x7fffffff && __BYTE_ORDER == __BIG_ENDIAN
+ int __pad1;
+#endif
+ socklen_t cmsg_len;
+#if __LONG_MAX > 0x7fffffff && __BYTE_ORDER == __LITTLE_ENDIAN
+ int __pad1;
+#endif
+ int cmsg_level;
+ int cmsg_type;
+};
+
#ifdef _GNU_SOURCE
struct ucred {
pid_t pid;
#endif
#ifndef SO_RCVTIMEO
+#if __LONG_MAX == 0x7fffffff
+#define SO_RCVTIMEO 66
+#define SO_SNDTIMEO 67
+#else
#define SO_RCVTIMEO 20
#define SO_SNDTIMEO 21
#endif
+#endif
#ifndef SO_TIMESTAMP
+#if __LONG_MAX == 0x7fffffff
+#define SO_TIMESTAMP 63
+#define SO_TIMESTAMPNS 64
+#define SO_TIMESTAMPING 65
+#else
#define SO_TIMESTAMP 29
#define SO_TIMESTAMPNS 35
#define SO_TIMESTAMPING 37
#endif
+#endif
#define SO_SECURITY_AUTHENTICATION 22
#define SO_SECURITY_ENCRYPTION_TRANSPORT 23
#define SO_TXTIME 61
#define SCM_TXTIME SO_TXTIME
#define SO_BINDTOIFINDEX 62
+#define SO_DETACH_REUSEPORT_BPF 68
#ifndef SOL_SOCKET
#define SOL_SOCKET 1