#ifndef _SYS_SOCKET_H
#define _SYS_SOCKET_H
#ifdef __cplusplus
extern "C" {
#endif

#include <features.h>

#define __NEED_socklen_t
#define __NEED_sa_family_t
#define __NEED_size_t
#define __NEED_ssize_t
#define __NEED_uid_t
#define __NEED_pid_t
#define __NEED_gid_t
#define __NEED_struct_iovec

#include <bits/alltypes.h>

#include <bits/socket.h>

#ifdef _GNU_SOURCE
struct ucred {
  pid_t pid;
  uid_t uid;
  gid_t gid;
};

struct mmsghdr {
  struct msghdr msg_hdr;
  unsigned int msg_len;
};

struct timespec;

int sendmmsg(int, struct mmsghdr*, unsigned int, unsigned int);
int recvmmsg(int,
             struct mmsghdr*,
             unsigned int,
             unsigned int,
             struct timespec*);
#endif

struct linger {
  int l_onoff;
  int l_linger;
};

#define SHUT_RD 0
#define SHUT_WR 1
#define SHUT_RDWR 2

#ifndef SOCK_STREAM
#define SOCK_STREAM 1
#define SOCK_DGRAM 2
#endif

#define SOCK_RAW 3
#define SOCK_RDM 4
#define SOCK_SEQPACKET 5
#define SOCK_DCCP 6
#define SOCK_PACKET 10

#ifndef SOCK_CLOEXEC
#define SOCK_CLOEXEC 02000000
#define SOCK_NONBLOCK 04000
#endif

#define PF_UNSPEC 0
#define PF_LOCAL 1
#define PF_UNIX PF_LOCAL
#define PF_FILE PF_LOCAL
#define PF_INET 2
#define PF_AX25 3
#define PF_IPX 4
#define PF_APPLETALK 5
#define PF_NETROM 6
#define PF_BRIDGE 7
#define PF_ATMPVC 8
#define PF_X25 9
#define PF_INET6 10
#define PF_ROSE 11
#define PF_DECnet 12
#define PF_NETBEUI 13
#define PF_SECURITY 14
#define PF_KEY 15
#define PF_NETLINK 16
#define PF_ROUTE PF_NETLINK
#define PF_PACKET 17
#define PF_ASH 18
#define PF_ECONET 19
#define PF_ATMSVC 20
#define PF_RDS 21
#define PF_SNA 22
#define PF_IRDA 23
#define PF_PPPOX 24
#define PF_WANPIPE 25
#define PF_LLC 26
#define PF_IB 27
#define PF_MPLS 28
#define PF_CAN 29
#define PF_TIPC 30
#define PF_BLUETOOTH 31
#define PF_IUCV 32
#define PF_RXRPC 33
#define PF_ISDN 34
#define PF_PHONET 35
#define PF_IEEE802154 36
#define PF_CAIF 37
#define PF_ALG 38
#define PF_NFC 39
#define PF_VSOCK 40
#define PF_MAX 41

#define AF_UNSPEC PF_UNSPEC
#define AF_LOCAL PF_LOCAL
#define AF_UNIX AF_LOCAL
#define AF_FILE AF_LOCAL
#define AF_INET PF_INET
#define AF_AX25 PF_AX25
#define AF_IPX PF_IPX
#define AF_APPLETALK PF_APPLETALK
#define AF_NETROM PF_NETROM
#define AF_BRIDGE PF_BRIDGE
#define AF_ATMPVC PF_ATMPVC
#define AF_X25 PF_X25
#define AF_INET6 PF_INET6
#define AF_ROSE PF_ROSE
#define AF_DECnet PF_DECnet
#define AF_NETBEUI PF_NETBEUI
#define AF_SECURITY PF_SECURITY
#define AF_KEY PF_KEY
#define AF_NETLINK PF_NETLINK
#define AF_ROUTE PF_ROUTE
#define AF_PACKET PF_PACKET
#define AF_ASH PF_ASH
#define AF_ECONET PF_ECONET
#define AF_ATMSVC PF_ATMSVC
#define AF_RDS PF_RDS
#define AF_SNA PF_SNA
#define AF_IRDA PF_IRDA
#define AF_PPPOX PF_PPPOX
#define AF_WANPIPE PF_WANPIPE
#define AF_LLC PF_LLC
#define AF_IB PF_IB
#define AF_MPLS PF_MPLS
#define AF_CAN PF_CAN
#define AF_TIPC PF_TIPC
#define AF_BLUETOOTH PF_BLUETOOTH
#define AF_IUCV PF_IUCV
#define AF_RXRPC PF_RXRPC
#define AF_ISDN PF_ISDN
#define AF_PHONET PF_PHONET
#define AF_IEEE802154 PF_IEEE802154
#define AF_CAIF PF_CAIF
#define AF_ALG PF_ALG
#define AF_NFC PF_NFC
#define AF_VSOCK PF_VSOCK
#define AF_MAX PF_MAX

#ifndef SO_DEBUG
#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_PASSCRED 16
#define SO_PEERCRED 17
#define SO_RCVLOWAT 18
#define SO_SNDLOWAT 19
#define SO_RCVTIMEO 20
#define SO_SNDTIMEO 21
#define SO_ACCEPTCONN 30
#define SO_SNDBUFFORCE 32
#define SO_RCVBUFFORCE 33
#define SO_PROTOCOL 38
#define SO_DOMAIN 39
#endif

#define SO_SECURITY_AUTHENTICATION 22
#define SO_SECURITY_ENCRYPTION_TRANSPORT 23
#define SO_SECURITY_ENCRYPTION_NETWORK 24

#define SO_BINDTODEVICE 25

#define SO_ATTACH_FILTER 26
#define SO_DETACH_FILTER 27
#define SO_GET_FILTER SO_ATTACH_FILTER

#define SO_PEERNAME 28
#define SO_TIMESTAMP 29
#define SCM_TIMESTAMP SO_TIMESTAMP

#define SO_PEERSEC 31
#define SO_PASSSEC 34
#define SO_TIMESTAMPNS 35
#define SCM_TIMESTAMPNS SO_TIMESTAMPNS
#define SO_MARK 36
#define SO_TIMESTAMPING 37
#define SCM_TIMESTAMPING SO_TIMESTAMPING
#define SO_RXQ_OVFL 40
#define SO_WIFI_STATUS 41
#define SCM_WIFI_STATUS SO_WIFI_STATUS
#define SO_PEEK_OFF 42
#define SO_NOFCS 43
#define SO_LOCK_FILTER 44
#define SO_SELECT_ERR_QUEUE 45
#define SO_BUSY_POLL 46
#define SO_MAX_PACING_RATE 47
#define SO_BPF_EXTENSIONS 48
#define SO_INCOMING_CPU 49
#define SO_ATTACH_BPF 50
#define SO_DETACH_BPF SO_DETACH_FILTER

#ifndef SOL_SOCKET
#define SOL_SOCKET 1
#endif

#define SOL_IP 0
#define SOL_IPV6 41
#define SOL_ICMPV6 58

#define SOL_RAW 255
#define SOL_DECNET 261
#define SOL_X25 262
#define SOL_PACKET 263
#define SOL_ATM 264
#define SOL_AAL 265
#define SOL_IRDA 266

#define SOMAXCONN 128

#define MSG_OOB 0x0001
#define MSG_PEEK 0x0002
#define MSG_DONTROUTE 0x0004
#define MSG_CTRUNC 0x0008
#define MSG_PROXY 0x0010
#define MSG_TRUNC 0x0020
#define MSG_DONTWAIT 0x0040
#define MSG_EOR 0x0080
#define MSG_WAITALL 0x0100
#define MSG_FIN 0x0200
#define MSG_SYN 0x0400
#define MSG_CONFIRM 0x0800
#define MSG_RST 0x1000
#define MSG_ERRQUEUE 0x2000
#define MSG_NOSIGNAL 0x4000
#define MSG_MORE 0x8000
#define MSG_WAITFORONE 0x10000
#define MSG_FASTOPEN 0x20000000
#define MSG_CMSG_CLOEXEC 0x40000000

#define __CMSG_LEN(cmsg) \
  (((cmsg)->cmsg_len + sizeof(long) - 1) & ~(long)(sizeof(long) - 1))
#define __CMSG_NEXT(cmsg) ((unsigned char*)(cmsg) + __CMSG_LEN(cmsg))
#define __MHDR_END(mhdr) \
  ((unsigned char*)(mhdr)->msg_control + (mhdr)->msg_controllen)

#define CMSG_DATA(cmsg) ((unsigned char*)(((struct cmsghdr*)(cmsg)) + 1))
#define CMSG_NXTHDR(mhdr, cmsg)                                          \
  ((cmsg)->cmsg_len < sizeof(struct cmsghdr)                             \
       ? (struct cmsghdr*)0                                              \
       : (__CMSG_NEXT(cmsg) + sizeof(struct cmsghdr) >= __MHDR_END(mhdr) \
              ? (struct cmsghdr*)0                                       \
              : ((struct cmsghdr*)__CMSG_NEXT(cmsg))))
#define CMSG_FIRSTHDR(mhdr)                                 \
  ((size_t)(mhdr)->msg_controllen >= sizeof(struct cmsghdr) \
       ? (struct cmsghdr*)(mhdr)->msg_control               \
       : (struct cmsghdr*)0)

#define CMSG_ALIGN(len) \
  (((len) + sizeof(size_t) - 1) & (size_t) ~(sizeof(size_t) - 1))
#define CMSG_SPACE(len) (CMSG_ALIGN(len) + CMSG_ALIGN(sizeof(struct cmsghdr)))
#define CMSG_LEN(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + (len))

#define SCM_RIGHTS 0x01
#define SCM_CREDENTIALS 0x02

struct sockaddr {
  sa_family_t sa_family;
  char sa_data[14];
};

struct sockaddr_storage {
  sa_family_t ss_family;
  unsigned long __ss_align;
  char __ss_padding[128 - 2 * sizeof(unsigned long)];
};

int socket(int, int, int);
int socketpair(int, int, int, int[2]);

int shutdown(int, int);

int bind(int, const struct sockaddr*, socklen_t);
int connect(int, const struct sockaddr*, socklen_t);
int listen(int, int);
int accept(int, struct sockaddr* __restrict, socklen_t* __restrict);
int accept4(int, struct sockaddr* __restrict, socklen_t* __restrict, int);

int getsockname(int, struct sockaddr* __restrict, socklen_t* __restrict);
int getpeername(int, struct sockaddr* __restrict, socklen_t* __restrict);

ssize_t send(int, const void*, size_t, int);
ssize_t recv(int, void*, size_t, int);
ssize_t sendto(int,
               const void*,
               size_t,
               int,
               const struct sockaddr*,
               socklen_t);
ssize_t recvfrom(int,
                 void* __restrict,
                 size_t,
                 int,
                 struct sockaddr* __restrict,
                 socklen_t* __restrict);
ssize_t sendmsg(int, const struct msghdr*, int);
ssize_t recvmsg(int, struct msghdr*, int);

int getsockopt(int, int, int, void* __restrict, socklen_t* __restrict);
int setsockopt(int, int, int, const void*, socklen_t);

int sockatmark(int);

#ifdef __cplusplus
}
#endif
#endif