/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SOCKET_H #define _LINUX_SOCKET_H #include <asm/socket.h> /* arch-dependent defines */ #include <linux/sockios.h> /* the SIOCxxx I/O controls */ #include <linux/uio.h> /* iovec support */ #include <linux/types.h> /* pid_t */ #include <linux/compiler.h> /* __user */ #include <uapi/linux/socket.h> struct file; struct pid; struct cred; struct socket; struct sock; struct sk_buff; struct proto_accept_arg; #define __sockaddr_check_size(size) … #ifdef CONFIG_PROC_FS struct seq_file; extern void socket_seq_show(struct seq_file *seq); #endif sa_family_t; /* * 1003.1g requires sa_family_t and that sa_data is char. */ struct sockaddr { … }; struct linger { … }; #define sockaddr_storage … /* * As we do 4.4BSD message passing we use a 4.4BSD message passing * system, not 4.3. Thus msg_accrights(len) are now missing. They * belong in an obscure libc emulation or the bin. */ struct msghdr { … }; struct user_msghdr { … }; /* For recvmmsg/sendmmsg */ struct mmsghdr { … }; /* * POSIX 1003.1g - ancillary data object information * Ancillary data consists of a sequence of pairs of * (cmsghdr, cmsg_data[]) */ struct cmsghdr { … }; /* * Ancillary data object information MACROS * Table 5-14 of POSIX 1003.1g */ #define __CMSG_NXTHDR(ctl, len, cmsg) … #define CMSG_NXTHDR(mhdr, cmsg) … #define CMSG_ALIGN(len) … #define CMSG_DATA(cmsg) … #define CMSG_USER_DATA(cmsg) … #define CMSG_SPACE(len) … #define CMSG_LEN(len) … #define __CMSG_FIRSTHDR(ctl,len) … #define CMSG_FIRSTHDR(msg) … #define CMSG_OK(mhdr, cmsg) … #define for_each_cmsghdr(cmsg, msg) … /* * Get the next cmsg header * * PLEASE, do not touch this function. If you think, that it is * incorrect, grep kernel sources and think about consequences * before trying to improve it. * * Now it always returns valid, not truncated ancillary object * HEADER. But caller still MUST check, that cmsg->cmsg_len is * inside range, given by msg->msg_controllen before using * ancillary object DATA. --ANK (980731) */ static inline struct cmsghdr * __cmsg_nxthdr(void *__ctl, __kernel_size_t __size, struct cmsghdr *__cmsg) { … } static inline struct cmsghdr * cmsg_nxthdr (struct msghdr *__msg, struct cmsghdr *__cmsg) { … } static inline size_t msg_data_left(struct msghdr *msg) { … } /* "Socket"-level control message types: */ #define SCM_RIGHTS … #define SCM_CREDENTIALS … #define SCM_SECURITY … #define SCM_PIDFD … struct ucred { … }; /* Supported address families. */ #define AF_UNSPEC … #define AF_UNIX … #define AF_LOCAL … #define AF_INET … #define AF_AX25 … #define AF_IPX … #define AF_APPLETALK … #define AF_NETROM … #define AF_BRIDGE … #define AF_ATMPVC … #define AF_X25 … #define AF_INET6 … #define AF_ROSE … #define AF_DECnet … #define AF_NETBEUI … #define AF_SECURITY … #define AF_KEY … #define AF_NETLINK … #define AF_ROUTE … #define AF_PACKET … #define AF_ASH … #define AF_ECONET … #define AF_ATMSVC … #define AF_RDS … #define AF_SNA … #define AF_IRDA … #define AF_PPPOX … #define AF_WANPIPE … #define AF_LLC … #define AF_IB … #define AF_MPLS … #define AF_CAN … #define AF_TIPC … #define AF_BLUETOOTH … #define AF_IUCV … #define AF_RXRPC … #define AF_ISDN … #define AF_PHONET … #define AF_IEEE802154 … #define AF_CAIF … #define AF_ALG … #define AF_NFC … #define AF_VSOCK … #define AF_KCM … #define AF_QIPCRTR … #define AF_SMC … #define AF_XDP … #define AF_MCTP … #define AF_MAX … /* Protocol families, same as address families. */ #define PF_UNSPEC … #define PF_UNIX … #define PF_LOCAL … #define PF_INET … #define PF_AX25 … #define PF_IPX … #define PF_APPLETALK … #define PF_NETROM … #define PF_BRIDGE … #define PF_ATMPVC … #define PF_X25 … #define PF_INET6 … #define PF_ROSE … #define PF_DECnet … #define PF_NETBEUI … #define PF_SECURITY … #define PF_KEY … #define PF_NETLINK … #define PF_ROUTE … #define PF_PACKET … #define PF_ASH … #define PF_ECONET … #define PF_ATMSVC … #define PF_RDS … #define PF_SNA … #define PF_IRDA … #define PF_PPPOX … #define PF_WANPIPE … #define PF_LLC … #define PF_IB … #define PF_MPLS … #define PF_CAN … #define PF_TIPC … #define PF_BLUETOOTH … #define PF_IUCV … #define PF_RXRPC … #define PF_ISDN … #define PF_PHONET … #define PF_IEEE802154 … #define PF_CAIF … #define PF_ALG … #define PF_NFC … #define PF_VSOCK … #define PF_KCM … #define PF_QIPCRTR … #define PF_SMC … #define PF_XDP … #define PF_MCTP … #define PF_MAX … /* Maximum queue length specifiable by listen. */ #define SOMAXCONN … /* Flags we can use with send/ and recv. Added those for 1003.1g not all are supported yet */ #define MSG_OOB … #define MSG_PEEK … #define MSG_DONTROUTE … #define MSG_TRYHARD … #define MSG_CTRUNC … #define MSG_PROBE … #define MSG_TRUNC … #define MSG_DONTWAIT … #define MSG_EOR … #define MSG_WAITALL … #define MSG_FIN … #define MSG_SYN … #define MSG_CONFIRM … #define MSG_RST … #define MSG_ERRQUEUE … #define MSG_NOSIGNAL … #define MSG_MORE … #define MSG_WAITFORONE … #define MSG_SENDPAGE_NOPOLICY … #define MSG_BATCH … #define MSG_EOF … #define MSG_NO_SHARED_FRAGS … #define MSG_SENDPAGE_DECRYPTED … #define MSG_ZEROCOPY … #define MSG_SPLICE_PAGES … #define MSG_FASTOPEN … #define MSG_CMSG_CLOEXEC … #if defined(CONFIG_COMPAT) #define MSG_CMSG_COMPAT … #else #define MSG_CMSG_COMPAT … #endif /* Flags to be cleared on entry by sendmsg and sendmmsg syscalls */ #define MSG_INTERNAL_SENDMSG_FLAGS … /* Setsockoptions(2) level. Thanks to BSD these must match IPPROTO_xxx */ #define SOL_IP … /* #define SOL_ICMP 1 No-no-no! Due to Linux :-) we cannot use SOL_ICMP=1 */ #define SOL_TCP … #define SOL_UDP … #define SOL_IPV6 … #define SOL_ICMPV6 … #define SOL_SCTP … #define SOL_UDPLITE … #define SOL_RAW … #define SOL_IPX … #define SOL_AX25 … #define SOL_ATALK … #define SOL_NETROM … #define SOL_ROSE … #define SOL_DECNET … #define SOL_X25 … #define SOL_PACKET … #define SOL_ATM … #define SOL_AAL … #define SOL_IRDA … #define SOL_NETBEUI … #define SOL_LLC … #define SOL_DCCP … #define SOL_NETLINK … #define SOL_TIPC … #define SOL_RXRPC … #define SOL_PPPOL2TP … #define SOL_BLUETOOTH … #define SOL_PNPIPE … #define SOL_RDS … #define SOL_IUCV … #define SOL_CAIF … #define SOL_ALG … #define SOL_NFC … #define SOL_KCM … #define SOL_TLS … #define SOL_XDP … #define SOL_MPTCP … #define SOL_MCTP … #define SOL_SMC … #define SOL_VSOCK … /* IPX options */ #define IPX_TYPE … extern int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr_storage *kaddr); extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data); struct timespec64; struct __kernel_timespec; struct old_timespec32; struct scm_timestamping_internal { … }; extern void put_cmsg_scm_timestamping64(struct msghdr *msg, struct scm_timestamping_internal *tss); extern void put_cmsg_scm_timestamping(struct msghdr *msg, struct scm_timestamping_internal *tss); /* The __sys_...msg variants allow MSG_CMSG_COMPAT iff * forbid_cmsg_compat==false */ extern long __sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned int flags, bool forbid_cmsg_compat); extern long __sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned int flags, bool forbid_cmsg_compat); extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, unsigned int flags, struct __kernel_timespec __user *timeout, struct old_timespec32 __user *timeout32); extern int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, unsigned int flags, bool forbid_cmsg_compat); extern long __sys_sendmsg_sock(struct socket *sock, struct msghdr *msg, unsigned int flags); extern long __sys_recvmsg_sock(struct socket *sock, struct msghdr *msg, struct user_msghdr __user *umsg, struct sockaddr __user *uaddr, unsigned int flags); extern int __copy_msghdr(struct msghdr *kmsg, struct user_msghdr *umsg, struct sockaddr __user **save_addr); /* helpers which do the actual work for syscalls */ extern int __sys_recvfrom(int fd, void __user *ubuf, size_t size, unsigned int flags, struct sockaddr __user *addr, int __user *addr_len); extern int __sys_sendto(int fd, void __user *buff, size_t len, unsigned int flags, struct sockaddr __user *addr, int addr_len); extern struct file *do_accept(struct file *file, struct proto_accept_arg *arg, struct sockaddr __user *upeer_sockaddr, int __user *upeer_addrlen, int flags); extern int __sys_accept4(int fd, struct sockaddr __user *upeer_sockaddr, int __user *upeer_addrlen, int flags); extern int __sys_socket(int family, int type, int protocol); extern struct file *__sys_socket_file(int family, int type, int protocol); extern int __sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen); extern int __sys_bind_socket(struct socket *sock, struct sockaddr_storage *address, int addrlen); extern int __sys_connect_file(struct file *file, struct sockaddr_storage *addr, int addrlen, int file_flags); extern int __sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen); extern int __sys_listen(int fd, int backlog); extern int __sys_listen_socket(struct socket *sock, int backlog); extern int __sys_getsockname(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len); extern int __sys_getpeername(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len); extern int __sys_socketpair(int family, int type, int protocol, int __user *usockvec); extern int __sys_shutdown_sock(struct socket *sock, int how); extern int __sys_shutdown(int fd, int how); #endif /* _LINUX_SOCKET_H */
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