338 lines
11 KiB
C
338 lines
11 KiB
C
#ifndef _LINUX_SOCKET_H
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#define _LINUX_SOCKET_H
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/*
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* Desired design of maximum size and alignment (see RFC2553)
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*/
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#define _K_SS_MAXSIZE 128 /* Implementation specific max size */
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#define _K_SS_ALIGNSIZE (__alignof__ (struct sockaddr *))
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/* Implementation specific desired alignment */
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struct __kernel_sockaddr_storage {
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unsigned short ss_family; /* address family */
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/* Following field(s) are implementation specific */
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char __data[_K_SS_MAXSIZE - sizeof(unsigned short)];
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/* space to achieve desired size, */
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/* _SS_MAXSIZE value minus size of ss_family */
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} __attribute__ ((aligned(_K_SS_ALIGNSIZE))); /* force desired alignment */
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#ifdef __KERNEL__
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#include <asm/socket.h> /* arch-dependent defines */
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#include <linux/sockios.h> /* the SIOCxxx I/O controls */
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#include <linux/uio.h> /* iovec support */
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#include <linux/types.h> /* pid_t */
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#include <linux/compiler.h> /* __user */
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struct pid;
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struct cred;
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#define __sockaddr_check_size(size) \
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BUILD_BUG_ON(((size) > sizeof(struct __kernel_sockaddr_storage)))
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#ifdef CONFIG_PROC_FS
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struct seq_file;
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extern void socket_seq_show(struct seq_file *seq);
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#endif
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typedef unsigned short sa_family_t;
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/*
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* 1003.1g requires sa_family_t and that sa_data is char.
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*/
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struct sockaddr {
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sa_family_t sa_family; /* address family, AF_xxx */
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char sa_data[14]; /* 14 bytes of protocol address */
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};
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struct linger {
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int l_onoff; /* Linger active */
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int l_linger; /* How long to linger for */
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};
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#define sockaddr_storage __kernel_sockaddr_storage
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/*
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* As we do 4.4BSD message passing we use a 4.4BSD message passing
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* system, not 4.3. Thus msg_accrights(len) are now missing. They
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* belong in an obscure libc emulation or the bin.
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*/
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struct msghdr {
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void * msg_name; /* Socket name */
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int msg_namelen; /* Length of name */
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struct iovec * msg_iov; /* Data blocks */
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__kernel_size_t msg_iovlen; /* Number of blocks */
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void * msg_control; /* Per protocol magic (eg BSD file descriptor passing) */
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__kernel_size_t msg_controllen; /* Length of cmsg list */
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unsigned msg_flags;
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};
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/* For recvmmsg/sendmmsg */
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struct mmsghdr {
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struct msghdr msg_hdr;
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unsigned msg_len;
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};
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/*
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* POSIX 1003.1g - ancillary data object information
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* Ancillary data consits of a sequence of pairs of
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* (cmsghdr, cmsg_data[])
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*/
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struct cmsghdr {
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__kernel_size_t cmsg_len; /* data byte count, including hdr */
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int cmsg_level; /* originating protocol */
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int cmsg_type; /* protocol-specific type */
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};
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/*
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* Ancilliary data object information MACROS
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* Table 5-14 of POSIX 1003.1g
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*/
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#define __CMSG_NXTHDR(ctl, len, cmsg) __cmsg_nxthdr((ctl),(len),(cmsg))
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#define CMSG_NXTHDR(mhdr, cmsg) cmsg_nxthdr((mhdr), (cmsg))
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#define CMSG_ALIGN(len) ( ((len)+sizeof(long)-1) & ~(sizeof(long)-1) )
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#define CMSG_DATA(cmsg) ((void *)((char *)(cmsg) + CMSG_ALIGN(sizeof(struct cmsghdr))))
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#define CMSG_SPACE(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + CMSG_ALIGN(len))
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#define CMSG_LEN(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + (len))
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#define __CMSG_FIRSTHDR(ctl,len) ((len) >= sizeof(struct cmsghdr) ? \
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(struct cmsghdr *)(ctl) : \
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(struct cmsghdr *)NULL)
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#define CMSG_FIRSTHDR(msg) __CMSG_FIRSTHDR((msg)->msg_control, (msg)->msg_controllen)
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#define CMSG_OK(mhdr, cmsg) ((cmsg)->cmsg_len >= sizeof(struct cmsghdr) && \
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(cmsg)->cmsg_len <= (unsigned long) \
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((mhdr)->msg_controllen - \
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((char *)(cmsg) - (char *)(mhdr)->msg_control)))
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/*
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* Get the next cmsg header
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*
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* PLEASE, do not touch this function. If you think, that it is
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* incorrect, grep kernel sources and think about consequences
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* before trying to improve it.
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*
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* Now it always returns valid, not truncated ancillary object
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* HEADER. But caller still MUST check, that cmsg->cmsg_len is
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* inside range, given by msg->msg_controllen before using
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* ancillary object DATA. --ANK (980731)
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*/
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static inline struct cmsghdr * __cmsg_nxthdr(void *__ctl, __kernel_size_t __size,
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struct cmsghdr *__cmsg)
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{
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struct cmsghdr * __ptr;
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__ptr = (struct cmsghdr*)(((unsigned char *) __cmsg) + CMSG_ALIGN(__cmsg->cmsg_len));
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if ((unsigned long)((char*)(__ptr+1) - (char *) __ctl) > __size)
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return (struct cmsghdr *)0;
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return __ptr;
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}
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static inline struct cmsghdr * cmsg_nxthdr (struct msghdr *__msg, struct cmsghdr *__cmsg)
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{
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return __cmsg_nxthdr(__msg->msg_control, __msg->msg_controllen, __cmsg);
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}
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/* "Socket"-level control message types: */
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#define SCM_RIGHTS 0x01 /* rw: access rights (array of int) */
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#define SCM_CREDENTIALS 0x02 /* rw: struct ucred */
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#define SCM_SECURITY 0x03 /* rw: security label */
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struct ucred {
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__u32 pid;
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__u32 uid;
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__u32 gid;
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};
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/* Supported address families. */
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#define AF_UNSPEC 0
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#define AF_UNIX 1 /* Unix domain sockets */
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#define AF_LOCAL 1 /* POSIX name for AF_UNIX */
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#define AF_INET 2 /* Internet IP Protocol */
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#define AF_AX25 3 /* Amateur Radio AX.25 */
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#define AF_IPX 4 /* Novell IPX */
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#define AF_APPLETALK 5 /* AppleTalk DDP */
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#define AF_NETROM 6 /* Amateur Radio NET/ROM */
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#define AF_BRIDGE 7 /* Multiprotocol bridge */
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#define AF_ATMPVC 8 /* ATM PVCs */
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#define AF_X25 9 /* Reserved for X.25 project */
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#define AF_INET6 10 /* IP version 6 */
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#define AF_ROSE 11 /* Amateur Radio X.25 PLP */
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#define AF_DECnet 12 /* Reserved for DECnet project */
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#define AF_NETBEUI 13 /* Reserved for 802.2LLC project*/
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#define AF_SECURITY 14 /* Security callback pseudo AF */
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#define AF_KEY 15 /* PF_KEY key management API */
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#define AF_NETLINK 16
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#define AF_ROUTE AF_NETLINK /* Alias to emulate 4.4BSD */
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#define AF_PACKET 17 /* Packet family */
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#define AF_ASH 18 /* Ash */
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#define AF_ECONET 19 /* Acorn Econet */
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#define AF_ATMSVC 20 /* ATM SVCs */
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#define AF_RDS 21 /* RDS sockets */
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#define AF_SNA 22 /* Linux SNA Project (nutters!) */
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#define AF_IRDA 23 /* IRDA sockets */
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#define AF_PPPOX 24 /* PPPoX sockets */
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#define AF_WANPIPE 25 /* Wanpipe API Sockets */
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#define AF_LLC 26 /* Linux LLC */
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#define AF_CAN 29 /* Controller Area Network */
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#define AF_TIPC 30 /* TIPC sockets */
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#define AF_BLUETOOTH 31 /* Bluetooth sockets */
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#define AF_IUCV 32 /* IUCV sockets */
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#define AF_RXRPC 33 /* RxRPC sockets */
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#define AF_ISDN 34 /* mISDN sockets */
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#define AF_PHONET 35 /* Phonet sockets */
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#define AF_IEEE802154 36 /* IEEE802154 sockets */
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#define AF_CAIF 37 /* CAIF sockets */
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#define AF_ALG 38 /* Algorithm sockets */
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#define AF_MAX 39 /* For now.. */
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/* Protocol families, same as address families. */
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#define PF_UNSPEC AF_UNSPEC
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#define PF_UNIX AF_UNIX
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#define PF_LOCAL AF_LOCAL
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#define PF_INET AF_INET
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#define PF_AX25 AF_AX25
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#define PF_IPX AF_IPX
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#define PF_APPLETALK AF_APPLETALK
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#define PF_NETROM AF_NETROM
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#define PF_BRIDGE AF_BRIDGE
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#define PF_ATMPVC AF_ATMPVC
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#define PF_X25 AF_X25
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#define PF_INET6 AF_INET6
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#define PF_ROSE AF_ROSE
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#define PF_DECnet AF_DECnet
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#define PF_NETBEUI AF_NETBEUI
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#define PF_SECURITY AF_SECURITY
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#define PF_KEY AF_KEY
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#define PF_NETLINK AF_NETLINK
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#define PF_ROUTE AF_ROUTE
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#define PF_PACKET AF_PACKET
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#define PF_ASH AF_ASH
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#define PF_ECONET AF_ECONET
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#define PF_ATMSVC AF_ATMSVC
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#define PF_RDS AF_RDS
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#define PF_SNA AF_SNA
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#define PF_IRDA AF_IRDA
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#define PF_PPPOX AF_PPPOX
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#define PF_WANPIPE AF_WANPIPE
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#define PF_LLC AF_LLC
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#define PF_CAN AF_CAN
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#define PF_TIPC AF_TIPC
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#define PF_BLUETOOTH AF_BLUETOOTH
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#define PF_IUCV AF_IUCV
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#define PF_RXRPC AF_RXRPC
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#define PF_ISDN AF_ISDN
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#define PF_PHONET AF_PHONET
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#define PF_IEEE802154 AF_IEEE802154
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#define PF_CAIF AF_CAIF
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#define PF_ALG AF_ALG
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#define PF_MAX AF_MAX
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/* Maximum queue length specifiable by listen. */
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#define SOMAXCONN 128
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/* Flags we can use with send/ and recv.
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Added those for 1003.1g not all are supported yet
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*/
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#define MSG_OOB 1
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#define MSG_PEEK 2
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#define MSG_DONTROUTE 4
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#define MSG_TRYHARD 4 /* Synonym for MSG_DONTROUTE for DECnet */
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#define MSG_CTRUNC 8
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#define MSG_PROBE 0x10 /* Do not send. Only probe path f.e. for MTU */
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#define MSG_TRUNC 0x20
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#define MSG_DONTWAIT 0x40 /* Nonblocking io */
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#define MSG_EOR 0x80 /* End of record */
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#define MSG_WAITALL 0x100 /* Wait for a full request */
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#define MSG_FIN 0x200
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#define MSG_SYN 0x400
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#define MSG_CONFIRM 0x800 /* Confirm path validity */
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#define MSG_RST 0x1000
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#define MSG_ERRQUEUE 0x2000 /* Fetch message from error queue */
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#define MSG_NOSIGNAL 0x4000 /* Do not generate SIGPIPE */
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#define MSG_MORE 0x8000 /* Sender will send more */
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#define MSG_WAITFORONE 0x10000 /* recvmmsg(): block until 1+ packets avail */
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#define MSG_EOF MSG_FIN
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#define MSG_CMSG_CLOEXEC 0x40000000 /* Set close_on_exit for file
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descriptor received through
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SCM_RIGHTS */
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#if defined(CONFIG_COMPAT)
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#define MSG_CMSG_COMPAT 0x80000000 /* This message needs 32 bit fixups */
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#else
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#define MSG_CMSG_COMPAT 0 /* We never have 32 bit fixups */
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#endif
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/* Setsockoptions(2) level. Thanks to BSD these must match IPPROTO_xxx */
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#define SOL_IP 0
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/* #define SOL_ICMP 1 No-no-no! Due to Linux :-) we cannot use SOL_ICMP=1 */
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#define SOL_TCP 6
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#define SOL_UDP 17
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#define SOL_IPV6 41
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#define SOL_ICMPV6 58
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#define SOL_SCTP 132
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#define SOL_UDPLITE 136 /* UDP-Lite (RFC 3828) */
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#define SOL_RAW 255
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#define SOL_IPX 256
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#define SOL_AX25 257
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#define SOL_ATALK 258
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#define SOL_NETROM 259
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#define SOL_ROSE 260
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#define SOL_DECNET 261
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#define SOL_X25 262
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#define SOL_PACKET 263
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#define SOL_ATM 264 /* ATM layer (cell level) */
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#define SOL_AAL 265 /* ATM Adaption Layer (packet level) */
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#define SOL_IRDA 266
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#define SOL_NETBEUI 267
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#define SOL_LLC 268
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#define SOL_DCCP 269
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#define SOL_NETLINK 270
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#define SOL_TIPC 271
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#define SOL_RXRPC 272
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#define SOL_PPPOL2TP 273
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#define SOL_BLUETOOTH 274
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#define SOL_PNPIPE 275
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#define SOL_RDS 276
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#define SOL_IUCV 277
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#define SOL_CAIF 278
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#define SOL_ALG 279
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/* IPX options */
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#define IPX_TYPE 1
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extern void cred_to_ucred(struct pid *pid, const struct cred *cred, struct ucred *ucred);
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extern int memcpy_fromiovec(unsigned char *kdata, struct iovec *iov, int len);
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extern int memcpy_fromiovecend(unsigned char *kdata, const struct iovec *iov,
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int offset, int len);
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extern int csum_partial_copy_fromiovecend(unsigned char *kdata,
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struct iovec *iov,
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int offset,
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unsigned int len, __wsum *csump);
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extern int verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr *address, int mode);
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extern int memcpy_toiovec(struct iovec *v, unsigned char *kdata, int len);
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extern int memcpy_toiovecend(const struct iovec *v, unsigned char *kdata,
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int offset, int len);
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extern int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr *kaddr);
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extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data);
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struct timespec;
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extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen,
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unsigned int flags, struct timespec *timeout);
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#endif /* not kernel and not glibc */
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#endif /* _LINUX_SOCKET_H */
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