1#ifndef _LINUX_SOCKET_H 2#define _LINUX_SOCKET_H 3 4#if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2) 5 6#include <asm/socket.h> /* arch-dependent defines */ 7#include <linux/sockios.h> /* the SIOCxxx I/O controls */ 8#include <linux/uio.h> /* iovec support */ 9#include <linux/types.h> /* pid_t */ 10 11typedef unsigned short sa_family_t; 12 13/* 14 * 1003.1g requires sa_family_t and that sa_data is char. 15 */ 16 17struct sockaddr { 18 sa_family_t sa_family; /* address family, AF_xxx */ 19 char sa_data[14]; /* 14 bytes of protocol address */ 20}; 21 22struct linger { 23 int l_onoff; /* Linger active */ 24 int l_linger; /* How long to linger for */ 25}; 26 27/* 28 * As we do 4.4BSD message passing we use a 4.4BSD message passing 29 * system, not 4.3. Thus msg_accrights(len) are now missing. They 30 * belong in an obscure libc emulation or the bin. 31 */ 32 33struct msghdr { 34 void * msg_name; /* Socket name */ 35 int msg_namelen; /* Length of name */ 36 struct iovec * msg_iov; /* Data blocks */ 37 __kernel_size_t msg_iovlen; /* Number of blocks */ 38 void * msg_control; /* Per protocol magic (eg BSD file descriptor passing) */ 39 __kernel_size_t msg_controllen; /* Length of cmsg list */ 40 unsigned msg_flags; 41}; 42 43/* 44 * POSIX 1003.1g - ancillary data object information 45 * Ancillary data consits of a sequence of pairs of 46 * (cmsghdr, cmsg_data[]) 47 */ 48 49struct cmsghdr { 50 __kernel_size_t cmsg_len; /* data byte count, including hdr */ 51 int cmsg_level; /* originating protocol */ 52 int cmsg_type; /* protocol-specific type */ 53}; 54 55/* 56 * Ancilliary data object information MACROS 57 * Table 5-14 of POSIX 1003.1g 58 */ 59 60#define __CMSG_NXTHDR(ctl, len, cmsg) __cmsg_nxthdr((ctl),(len),(cmsg)) 61#define CMSG_NXTHDR(mhdr, cmsg) cmsg_nxthdr((mhdr), (cmsg)) 62 63#define CMSG_ALIGN(len) ( ((len)+sizeof(long)-1) & ~(sizeof(long)-1) ) 64 65#define CMSG_DATA(cmsg) ((void *)((char *)(cmsg) + CMSG_ALIGN(sizeof(struct cmsghdr)))) 66#define CMSG_SPACE(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + CMSG_ALIGN(len)) 67#define CMSG_LEN(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + (len)) 68 69#define __CMSG_FIRSTHDR(ctl,len) ((len) >= sizeof(struct cmsghdr) ? \ 70 (struct cmsghdr *)(ctl) : \ 71 (struct cmsghdr *)NULL) 72#define CMSG_FIRSTHDR(msg) __CMSG_FIRSTHDR((msg)->msg_control, (msg)->msg_controllen) 73 74/* 75 * This mess will go away with glibc 76 */ 77 78#ifdef __KERNEL__ 79#define __KINLINE static inline 80#elif defined(__GNUC__) 81#define __KINLINE static __inline__ 82#elif defined(__cplusplus) 83#define __KINLINE static inline 84#else 85#define __KINLINE static 86#endif 87 88 89/* 90 * Get the next cmsg header 91 * 92 * PLEASE, do not touch this function. If you think, that it is 93 * incorrect, grep kernel sources and think about consequences 94 * before trying to improve it. 95 * 96 * Now it always returns valid, not truncated ancillary object 97 * HEADER. But caller still MUST check, that cmsg->cmsg_len is 98 * inside range, given by msg->msg_controllen before using 99 * ansillary object DATA. --ANK (980731) 100 */ 101 102__KINLINE struct cmsghdr * __cmsg_nxthdr(void *__ctl, __kernel_size_t __size, 103 struct cmsghdr *__cmsg) 104{ 105 struct cmsghdr * __ptr; 106 107 __ptr = (struct cmsghdr*)(((unsigned char *) __cmsg) + CMSG_ALIGN(__cmsg->cmsg_len)); 108 if ((unsigned long)((char*)(__ptr+1) - (char *) __ctl) > __size) 109 return (struct cmsghdr *)0; 110 111 return __ptr; 112} 113 114__KINLINE struct cmsghdr * cmsg_nxthdr (struct msghdr *__msg, struct cmsghdr *__cmsg) 115{ 116 return __cmsg_nxthdr(__msg->msg_control, __msg->msg_controllen, __cmsg); 117} 118 119/* "Socket"-level control message types: */ 120 121#define SCM_RIGHTS 0x01 /* rw: access rights (array of int) */ 122#define SCM_CREDENTIALS 0x02 /* rw: struct ucred */ 123#define SCM_CONNECT 0x03 /* rw: struct scm_connect */ 124 125struct ucred { 126 __u32 pid; 127 __u32 uid; 128 __u32 gid; 129}; 130 131/* Supported address families. */ 132#define AF_UNSPEC 0 133#define AF_UNIX 1 /* Unix domain sockets */ 134#define AF_LOCAL 1 /* POSIX name for AF_UNIX */ 135#define AF_INET 2 /* Internet IP Protocol */ 136#define AF_AX25 3 /* Amateur Radio AX.25 */ 137#define AF_IPX 4 /* Novell IPX */ 138#define AF_APPLETALK 5 /* AppleTalk DDP */ 139#define AF_NETROM 6 /* Amateur Radio NET/ROM */ 140#define AF_BRIDGE 7 /* Multiprotocol bridge */ 141#define AF_ATMPVC 8 /* ATM PVCs */ 142#define AF_X25 9 /* Reserved for X.25 project */ 143#define AF_INET6 10 /* IP version 6 */ 144#define AF_ROSE 11 /* Amateur Radio X.25 PLP */ 145#define AF_DECnet 12 /* Reserved for DECnet project */ 146#define AF_NETBEUI 13 /* Reserved for 802.2LLC project*/ 147#define AF_SECURITY 14 /* Security callback pseudo AF */ 148#define AF_KEY 15 /* PF_KEY key management API */ 149#define AF_NETLINK 16 150#define AF_ROUTE AF_NETLINK /* Alias to emulate 4.4BSD */ 151#define AF_PACKET 17 /* Packet family */ 152#define AF_ASH 18 /* Ash */ 153#define AF_ECONET 19 /* Acorn Econet */ 154#define AF_ATMSVC 20 /* ATM SVCs */ 155#define AF_SNA 22 /* Linux SNA Project (nutters!) */ 156#define AF_IRDA 23 /* IRDA sockets */ 157#define AF_PPPOX 24 /* PPPoX sockets */ 158#define AF_WANPIPE 25 /* Wanpipe API Sockets */ 159#define AF_LLC 26 /* Linux LLC */ 160#define AF_BLUETOOTH 31 /* Bluetooth sockets */ 161#define AF_MAX 32 /* For now.. */ 162 163/* Protocol families, same as address families. */ 164#define PF_UNSPEC AF_UNSPEC 165#define PF_UNIX AF_UNIX 166#define PF_LOCAL AF_LOCAL 167#define PF_INET AF_INET 168#define PF_AX25 AF_AX25 169#define PF_IPX AF_IPX 170#define PF_APPLETALK AF_APPLETALK 171#define PF_NETROM AF_NETROM 172#define PF_BRIDGE AF_BRIDGE 173#define PF_ATMPVC AF_ATMPVC 174#define PF_X25 AF_X25 175#define PF_INET6 AF_INET6 176#define PF_ROSE AF_ROSE 177#define PF_DECnet AF_DECnet 178#define PF_NETBEUI AF_NETBEUI 179#define PF_SECURITY AF_SECURITY 180#define PF_KEY AF_KEY 181#define PF_NETLINK AF_NETLINK 182#define PF_ROUTE AF_ROUTE 183#define PF_PACKET AF_PACKET 184#define PF_ASH AF_ASH 185#define PF_ECONET AF_ECONET 186#define PF_ATMSVC AF_ATMSVC 187#define PF_SNA AF_SNA 188#define PF_IRDA AF_IRDA 189#define PF_PPPOX AF_PPPOX 190#define PF_WANPIPE AF_WANPIPE 191#define PF_LLC AF_LLC 192#define PF_BLUETOOTH AF_BLUETOOTH 193#define PF_MAX AF_MAX 194 195/* Maximum queue length specifiable by listen. */ 196#define SOMAXCONN 128 197 198/* Flags we can use with send/ and recv. 199 Added those for 1003.1g not all are supported yet 200 */ 201 202#define MSG_OOB 1 203#define MSG_PEEK 2 204#define MSG_DONTROUTE 4 205#define MSG_TRYHARD 4 /* Synonym for MSG_DONTROUTE for DECnet */ 206#define MSG_CTRUNC 8 207#define MSG_PROBE 0x10 /* Do not send. Only probe path f.e. for MTU */ 208#define MSG_TRUNC 0x20 209#define MSG_DONTWAIT 0x40 /* Nonblocking io */ 210#define MSG_EOR 0x80 /* End of record */ 211#define MSG_WAITALL 0x100 /* Wait for a full request */ 212#define MSG_FIN 0x200 213#define MSG_SYN 0x400 214#define MSG_CONFIRM 0x800 /* Confirm path validity */ 215#define MSG_RST 0x1000 216#define MSG_ERRQUEUE 0x2000 /* Fetch message from error queue */ 217#define MSG_NOSIGNAL 0x4000 /* Do not generate SIGPIPE */ 218#define MSG_MORE 0x8000 /* Sender will send more */ 219 220#define MSG_EOF MSG_FIN 221 222 223/* Setsockoptions(2) level. Thanks to BSD these must match IPPROTO_xxx */ 224#define SOL_IP 0 225/* #define SOL_ICMP 1 No-no-no! Due to Linux :-) we cannot use SOL_ICMP=1 */ 226#define SOL_TCP 6 227#define SOL_UDP 17 228#define SOL_IPV6 41 229#define SOL_ICMPV6 58 230#define SOL_RAW 255 231#define SOL_IPX 256 232#define SOL_AX25 257 233#define SOL_ATALK 258 234#define SOL_NETROM 259 235#define SOL_ROSE 260 236#define SOL_DECNET 261 237#define SOL_X25 262 238#define SOL_PACKET 263 239#define SOL_ATM 264 /* ATM layer (cell level) */ 240#define SOL_AAL 265 /* ATM Adaption Layer (packet level) */ 241#define SOL_IRDA 266 242#define SOL_NETBEUI 267 243#define SOL_LLC 268 244 245/* IPX options */ 246#define IPX_TYPE 1 247 248#ifdef __KERNEL__ 249extern int memcpy_fromiovec(unsigned char *kdata, struct iovec *iov, int len); 250extern int memcpy_fromiovecend(unsigned char *kdata, struct iovec *iov, 251 int offset, int len); 252extern int csum_partial_copy_fromiovecend(unsigned char *kdata, 253 struct iovec *iov, 254 int offset, 255 unsigned int len, int *csump); 256 257extern int verify_iovec(struct msghdr *m, struct iovec *iov, char *address, int mode); 258extern int memcpy_toiovec(struct iovec *v, unsigned char *kdata, int len); 259extern void memcpy_tokerneliovec(struct iovec *iov, unsigned char *kdata, int len); 260extern int move_addr_to_user(void *kaddr, int klen, void *uaddr, int *ulen); 261extern int move_addr_to_kernel(void *uaddr, int ulen, void *kaddr); 262extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data); 263#endif 264#endif /* not kernel and not glibc */ 265#endif /* _LINUX_SOCKET_H */ 266