1 #ifndef _LINUX_SOCKET_H 2 #define _LINUX_SOCKET_H 3 4 /* 5 * Desired design of maximum size and alignment (see RFC2553) 6 */ 7 #define _K_SS_MAXSIZE 128 /* Implementation specific max size */ 8 #define _K_SS_ALIGNSIZE (__alignof__ (struct sockaddr *)) 9 /* Implementation specific desired alignment */ 10 11 struct __kernel_sockaddr_storage { 12 unsigned short ss_family; /* address family */ 13 /* Following field(s) are implementation specific */ 14 char __data[_K_SS_MAXSIZE - sizeof(unsigned short)]; 15 /* space to achieve desired size, */ 16 /* _SS_MAXSIZE value minus size of ss_family */ 17 } __attribute__ ((aligned(_K_SS_ALIGNSIZE))); /* force desired alignment */ 18 19 #if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2) 20 21 #include <asm/socket.h> /* arch-dependent defines */ 22 #include <linux/sockios.h> /* the SIOCxxx I/O controls */ 23 #include <linux/uio.h> /* iovec support */ 24 #include <linux/types.h> /* pid_t */ 25 26 extern int sysctl_somaxconn; 27 #ifdef CONFIG_PROC_FS 28 struct seq_file; 29 extern void socket_seq_show(struct seq_file *seq); 30 #endif 31 32 typedef unsigned short sa_family_t; 33 34 /* 35 * 1003.1g requires sa_family_t and that sa_data is char. 36 */ 37 38 struct sockaddr { 39 sa_family_t sa_family; /* address family, AF_xxx */ 40 char sa_data[14]; /* 14 bytes of protocol address */ 41 }; 42 43 struct linger { 44 int l_onoff; /* Linger active */ 45 int l_linger; /* How long to linger for */ 46 }; 47 48 #define sockaddr_storage __kernel_sockaddr_storage 49 50 /* 51 * As we do 4.4BSD message passing we use a 4.4BSD message passing 52 * system, not 4.3. Thus msg_accrights(len) are now missing. They 53 * belong in an obscure libc emulation or the bin. 54 */ 55 56 struct msghdr { 57 void * msg_name; /* Socket name */ 58 int msg_namelen; /* Length of name */ 59 struct iovec * msg_iov; /* Data blocks */ 60 __kernel_size_t msg_iovlen; /* Number of blocks */ 61 void * msg_control; /* Per protocol magic (eg BSD file descriptor passing) */ 62 __kernel_size_t msg_controllen; /* Length of cmsg list */ 63 unsigned msg_flags; 64 }; 65 66 /* 67 * POSIX 1003.1g - ancillary data object information 68 * Ancillary data consits of a sequence of pairs of 69 * (cmsghdr, cmsg_data[]) 70 */ 71 72 struct cmsghdr { 73 __kernel_size_t cmsg_len; /* data byte count, including hdr */ 74 int cmsg_level; /* originating protocol */ 75 int cmsg_type; /* protocol-specific type */ 76 }; 77 78 /* 79 * Ancilliary data object information MACROS 80 * Table 5-14 of POSIX 1003.1g 81 */ 82 83 #define __CMSG_NXTHDR(ctl, len, cmsg) __cmsg_nxthdr((ctl),(len),(cmsg)) 84 #define CMSG_NXTHDR(mhdr, cmsg) cmsg_nxthdr((mhdr), (cmsg)) 85 86 #define CMSG_ALIGN(len) ( ((len)+sizeof(long)-1) & ~(sizeof(long)-1) ) 87 88 #define CMSG_DATA(cmsg) ((void *)((char *)(cmsg) + CMSG_ALIGN(sizeof(struct cmsghdr)))) 89 #define CMSG_SPACE(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + CMSG_ALIGN(len)) 90 #define CMSG_LEN(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + (len)) 91 92 #define __CMSG_FIRSTHDR(ctl,len) ((len) >= sizeof(struct cmsghdr) ? \ 93 (struct cmsghdr *)(ctl) : \ 94 (struct cmsghdr *)NULL) 95 #define CMSG_FIRSTHDR(msg) __CMSG_FIRSTHDR((msg)->msg_control, (msg)->msg_controllen) 96 #define CMSG_OK(mhdr, cmsg) ((cmsg)->cmsg_len >= sizeof(struct cmsghdr) && \ 97 (cmsg)->cmsg_len <= (unsigned long) \ 98 ((mhdr)->msg_controllen - \ 99 ((char *)(cmsg) - (char *)(mhdr)->msg_control))) 100 101 /* 102 * This mess will go away with glibc 103 */ 104 105 #if defined(__GNUC__) 106 #define __KINLINE static __inline__ 107 #elif defined(__cplusplus) 108 #define __KINLINE static inline 109 #else 110 #define __KINLINE static 111 #endif 112 113 114 /* 115 * Get the next cmsg header 116 * 117 * PLEASE, do not touch this function. If you think, that it is 118 * incorrect, grep kernel sources and think about consequences 119 * before trying to improve it. 120 * 121 * Now it always returns valid, not truncated ancillary object 122 * HEADER. But caller still MUST check, that cmsg->cmsg_len is 123 * inside range, given by msg->msg_controllen before using 124 * ancillary object DATA. --ANK (980731) 125 */ 126 127 __KINLINE struct cmsghdr * __cmsg_nxthdr(void *__ctl, __kernel_size_t __size, 128 struct cmsghdr *__cmsg) 129 { 130 struct cmsghdr * __ptr; 131 132 __ptr = (struct cmsghdr*)(((unsigned char *) __cmsg) + CMSG_ALIGN(__cmsg->cmsg_len)); 133 if ((unsigned long)((char*)(__ptr+1) - (char *) __ctl) > __size) 134 return (struct cmsghdr *)0; 135 136 return __ptr; 137 } 138 139 __KINLINE struct cmsghdr * cmsg_nxthdr (struct msghdr *__msg, struct cmsghdr *__cmsg) 140 { 141 return __cmsg_nxthdr(__msg->msg_control, __msg->msg_controllen, __cmsg); 142 } 143 144 /* "Socket"-level control message types: */ 145 146 #define SCM_RIGHTS 0x01 /* rw: access rights (array of int) */ 147 #define SCM_CREDENTIALS 0x02 /* rw: struct ucred */ 148 #define SCM_SECURITY 0x03 /* rw: security label */ 149 150 struct ucred { 151 __u32 pid; 152 __u32 uid; 153 __u32 gid; 154 }; 155 156 /* Supported address families. */ 157 #define AF_UNSPEC 0 158 #define AF_UNIX 1 /* Unix domain sockets */ 159 #define AF_LOCAL 1 /* POSIX name for AF_UNIX */ 160 #define AF_INET 2 /* Internet IP Protocol */ 161 #define AF_AX25 3 /* Amateur Radio AX.25 */ 162 #define AF_IPX 4 /* Novell IPX */ 163 #define AF_APPLETALK 5 /* AppleTalk DDP */ 164 #define AF_NETROM 6 /* Amateur Radio NET/ROM */ 165 #define AF_BRIDGE 7 /* Multiprotocol bridge */ 166 #define AF_ATMPVC 8 /* ATM PVCs */ 167 #define AF_X25 9 /* Reserved for X.25 project */ 168 #define AF_INET6 10 /* IP version 6 */ 169 #define AF_ROSE 11 /* Amateur Radio X.25 PLP */ 170 #define AF_DECnet 12 /* Reserved for DECnet project */ 171 #define AF_NETBEUI 13 /* Reserved for 802.2LLC project*/ 172 #define AF_SECURITY 14 /* Security callback pseudo AF */ 173 #define AF_KEY 15 /* PF_KEY key management API */ 174 #define AF_NETLINK 16 175 #define AF_ROUTE AF_NETLINK /* Alias to emulate 4.4BSD */ 176 #define AF_PACKET 17 /* Packet family */ 177 #define AF_ASH 18 /* Ash */ 178 #define AF_ECONET 19 /* Acorn Econet */ 179 #define AF_ATMSVC 20 /* ATM SVCs */ 180 #define AF_SNA 22 /* Linux SNA Project (nutters!) */ 181 #define AF_IRDA 23 /* IRDA sockets */ 182 #define AF_PPPOX 24 /* PPPoX sockets */ 183 #define AF_WANPIPE 25 /* Wanpipe API Sockets */ 184 #define AF_LLC 26 /* Linux LLC */ 185 #define AF_TIPC 30 /* TIPC sockets */ 186 #define AF_BLUETOOTH 31 /* Bluetooth sockets */ 187 #define AF_IUCV 32 /* IUCV sockets */ 188 #define AF_RXRPC 33 /* RxRPC sockets */ 189 #define AF_MAX 34 /* For now.. */ 190 191 /* Protocol families, same as address families. */ 192 #define PF_UNSPEC AF_UNSPEC 193 #define PF_UNIX AF_UNIX 194 #define PF_LOCAL AF_LOCAL 195 #define PF_INET AF_INET 196 #define PF_AX25 AF_AX25 197 #define PF_IPX AF_IPX 198 #define PF_APPLETALK AF_APPLETALK 199 #define PF_NETROM AF_NETROM 200 #define PF_BRIDGE AF_BRIDGE 201 #define PF_ATMPVC AF_ATMPVC 202 #define PF_X25 AF_X25 203 #define PF_INET6 AF_INET6 204 #define PF_ROSE AF_ROSE 205 #define PF_DECnet AF_DECnet 206 #define PF_NETBEUI AF_NETBEUI 207 #define PF_SECURITY AF_SECURITY 208 #define PF_KEY AF_KEY 209 #define PF_NETLINK AF_NETLINK 210 #define PF_ROUTE AF_ROUTE 211 #define PF_PACKET AF_PACKET 212 #define PF_ASH AF_ASH 213 #define PF_ECONET AF_ECONET 214 #define PF_ATMSVC AF_ATMSVC 215 #define PF_SNA AF_SNA 216 #define PF_IRDA AF_IRDA 217 #define PF_PPPOX AF_PPPOX 218 #define PF_WANPIPE AF_WANPIPE 219 #define PF_LLC AF_LLC 220 #define PF_TIPC AF_TIPC 221 #define PF_BLUETOOTH AF_BLUETOOTH 222 #define PF_IUCV AF_IUCV 223 #define PF_RXRPC AF_RXRPC 224 #define PF_MAX AF_MAX 225 226 /* Maximum queue length specifiable by listen. */ 227 #define SOMAXCONN 128 228 229 /* Flags we can use with send/ and recv. 230 Added those for 1003.1g not all are supported yet 231 */ 232 233 #define MSG_OOB 1 234 #define MSG_PEEK 2 235 #define MSG_DONTROUTE 4 236 #define MSG_TRYHARD 4 /* Synonym for MSG_DONTROUTE for DECnet */ 237 #define MSG_CTRUNC 8 238 #define MSG_PROBE 0x10 /* Do not send. Only probe path f.e. for MTU */ 239 #define MSG_TRUNC 0x20 240 #define MSG_DONTWAIT 0x40 /* Nonblocking io */ 241 #define MSG_EOR 0x80 /* End of record */ 242 #define MSG_WAITALL 0x100 /* Wait for a full request */ 243 #define MSG_FIN 0x200 244 #define MSG_SYN 0x400 245 #define MSG_CONFIRM 0x800 /* Confirm path validity */ 246 #define MSG_RST 0x1000 247 #define MSG_ERRQUEUE 0x2000 /* Fetch message from error queue */ 248 #define MSG_NOSIGNAL 0x4000 /* Do not generate SIGPIPE */ 249 #define MSG_MORE 0x8000 /* Sender will send more */ 250 251 #define MSG_EOF MSG_FIN 252 253 #define MSG_CMSG_CLOEXEC 0x40000000 /* Set close_on_exit for file 254 descriptor received through 255 SCM_RIGHTS */ 256 #if defined(CONFIG_COMPAT) 257 #define MSG_CMSG_COMPAT 0x80000000 /* This message needs 32 bit fixups */ 258 #else 259 #define MSG_CMSG_COMPAT 0 /* We never have 32 bit fixups */ 260 #endif 261 262 263 /* Setsockoptions(2) level. Thanks to BSD these must match IPPROTO_xxx */ 264 #define SOL_IP 0 265 /* #define SOL_ICMP 1 No-no-no! Due to Linux :-) we cannot use SOL_ICMP=1 */ 266 #define SOL_TCP 6 267 #define SOL_UDP 17 268 #define SOL_IPV6 41 269 #define SOL_ICMPV6 58 270 #define SOL_SCTP 132 271 #define SOL_UDPLITE 136 /* UDP-Lite (RFC 3828) */ 272 #define SOL_RAW 255 273 #define SOL_IPX 256 274 #define SOL_AX25 257 275 #define SOL_ATALK 258 276 #define SOL_NETROM 259 277 #define SOL_ROSE 260 278 #define SOL_DECNET 261 279 #define SOL_X25 262 280 #define SOL_PACKET 263 281 #define SOL_ATM 264 /* ATM layer (cell level) */ 282 #define SOL_AAL 265 /* ATM Adaption Layer (packet level) */ 283 #define SOL_IRDA 266 284 #define SOL_NETBEUI 267 285 #define SOL_LLC 268 286 #define SOL_DCCP 269 287 #define SOL_NETLINK 270 288 #define SOL_TIPC 271 289 #define SOL_RXRPC 272 290 #define SOL_PPPOL2TP 273 291 #define SOL_BLUETOOTH 274 292 293 /* IPX options */ 294 #define IPX_TYPE 1 295 296 #endif /* not kernel and not glibc */ 297 #endif /* _LINUX_SOCKET_H */ 298
