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 #ifdef __KERNEL__ 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 #include <linux/compiler.h> /* __user */ 26 27 struct pid; 28 struct cred; 29 30 #define __sockaddr_check_size(size) \ 31 BUILD_BUG_ON(((size) > sizeof(struct __kernel_sockaddr_storage))) 32 33 #ifdef __KERNEL__ 34 # ifdef CONFIG_PROC_FS 35 struct seq_file; 36 extern void socket_seq_show(struct seq_file *seq); 37 # endif 38 #endif /* __KERNEL__ */ 39 40 typedef unsigned short sa_family_t; 41 42 /* 43 * 1003.1g requires sa_family_t and that sa_data is char. 44 */ 45 46 struct sockaddr { 47 sa_family_t sa_family; /* address family, AF_xxx */ 48 char sa_data[14]; /* 14 bytes of protocol address */ 49 }; 50 51 struct linger { 52 int l_onoff; /* Linger active */ 53 int l_linger; /* How long to linger for */ 54 }; 55 56 #define sockaddr_storage __kernel_sockaddr_storage 57 58 /* 59 * As we do 4.4BSD message passing we use a 4.4BSD message passing 60 * system, not 4.3. Thus msg_accrights(len) are now missing. They 61 * belong in an obscure libc emulation or the bin. 62 */ 63 64 struct msghdr { 65 void * msg_name; /* Socket name */ 66 int msg_namelen; /* Length of name */ 67 struct iovec * msg_iov; /* Data blocks */ 68 __kernel_size_t msg_iovlen; /* Number of blocks */ 69 void * msg_control; /* Per protocol magic (eg BSD file descriptor passing) */ 70 __kernel_size_t msg_controllen; /* Length of cmsg list */ 71 unsigned msg_flags; 72 }; 73 74 /* For recvmmsg/sendmmsg */ 75 struct mmsghdr { 76 struct msghdr msg_hdr; 77 unsigned msg_len; 78 }; 79 80 /* 81 * POSIX 1003.1g - ancillary data object information 82 * Ancillary data consits of a sequence of pairs of 83 * (cmsghdr, cmsg_data[]) 84 */ 85 86 struct cmsghdr { 87 __kernel_size_t cmsg_len; /* data byte count, including hdr */ 88 int cmsg_level; /* originating protocol */ 89 int cmsg_type; /* protocol-specific type */ 90 }; 91 92 /* 93 * Ancilliary data object information MACROS 94 * Table 5-14 of POSIX 1003.1g 95 */ 96 97 #define __CMSG_NXTHDR(ctl, len, cmsg) __cmsg_nxthdr((ctl),(len),(cmsg)) 98 #define CMSG_NXTHDR(mhdr, cmsg) cmsg_nxthdr((mhdr), (cmsg)) 99 100 #define CMSG_ALIGN(len) ( ((len)+sizeof(long)-1) & ~(sizeof(long)-1) ) 101 102 #define CMSG_DATA(cmsg) ((void *)((char *)(cmsg) + CMSG_ALIGN(sizeof(struct cmsghdr)))) 103 #define CMSG_SPACE(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + CMSG_ALIGN(len)) 104 #define CMSG_LEN(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + (len)) 105 106 #define __CMSG_FIRSTHDR(ctl,len) ((len) >= sizeof(struct cmsghdr) ? \ 107 (struct cmsghdr *)(ctl) : \ 108 (struct cmsghdr *)NULL) 109 #define CMSG_FIRSTHDR(msg) __CMSG_FIRSTHDR((msg)->msg_control, (msg)->msg_controllen) 110 #define CMSG_OK(mhdr, cmsg) ((cmsg)->cmsg_len >= sizeof(struct cmsghdr) && \ 111 (cmsg)->cmsg_len <= (unsigned long) \ 112 ((mhdr)->msg_controllen - \ 113 ((char *)(cmsg) - (char *)(mhdr)->msg_control))) 114 115 /* 116 * Get the next cmsg header 117 * 118 * PLEASE, do not touch this function. If you think, that it is 119 * incorrect, grep kernel sources and think about consequences 120 * before trying to improve it. 121 * 122 * Now it always returns valid, not truncated ancillary object 123 * HEADER. But caller still MUST check, that cmsg->cmsg_len is 124 * inside range, given by msg->msg_controllen before using 125 * ancillary object DATA. --ANK (980731) 126 */ 127 128 static inline struct cmsghdr * __cmsg_nxthdr(void *__ctl, __kernel_size_t __size, 129 struct cmsghdr *__cmsg) 130 { 131 struct cmsghdr * __ptr; 132 133 __ptr = (struct cmsghdr*)(((unsigned char *) __cmsg) + CMSG_ALIGN(__cmsg->cmsg_len)); 134 if ((unsigned long)((char*)(__ptr+1) - (char *) __ctl) > __size) 135 return (struct cmsghdr *)0; 136 137 return __ptr; 138 } 139 140 static inline struct cmsghdr * cmsg_nxthdr (struct msghdr *__msg, struct cmsghdr *__cmsg) 141 { 142 return __cmsg_nxthdr(__msg->msg_control, __msg->msg_controllen, __cmsg); 143 } 144 145 /* "Socket"-level control message types: */ 146 147 #define SCM_RIGHTS 0x01 /* rw: access rights (array of int) */ 148 #define SCM_CREDENTIALS 0x02 /* rw: struct ucred */ 149 #define SCM_SECURITY 0x03 /* rw: security label */ 150 151 struct ucred { 152 __u32 pid; 153 __u32 uid; 154 __u32 gid; 155 }; 156 157 /* Supported address families. */ 158 #define AF_UNSPEC 0 159 #define AF_UNIX 1 /* Unix domain sockets */ 160 #define AF_LOCAL 1 /* POSIX name for AF_UNIX */ 161 #define AF_INET 2 /* Internet IP Protocol */ 162 #define AF_AX25 3 /* Amateur Radio AX.25 */ 163 #define AF_IPX 4 /* Novell IPX */ 164 #define AF_APPLETALK 5 /* AppleTalk DDP */ 165 #define AF_NETROM 6 /* Amateur Radio NET/ROM */ 166 #define AF_BRIDGE 7 /* Multiprotocol bridge */ 167 #define AF_ATMPVC 8 /* ATM PVCs */ 168 #define AF_X25 9 /* Reserved for X.25 project */ 169 #define AF_INET6 10 /* IP version 6 */ 170 #define AF_ROSE 11 /* Amateur Radio X.25 PLP */ 171 #define AF_DECnet 12 /* Reserved for DECnet project */ 172 #define AF_NETBEUI 13 /* Reserved for 802.2LLC project*/ 173 #define AF_SECURITY 14 /* Security callback pseudo AF */ 174 #define AF_KEY 15 /* PF_KEY key management API */ 175 #define AF_NETLINK 16 176 #define AF_ROUTE AF_NETLINK /* Alias to emulate 4.4BSD */ 177 #define AF_PACKET 17 /* Packet family */ 178 #define AF_ASH 18 /* Ash */ 179 #define AF_ECONET 19 /* Acorn Econet */ 180 #define AF_ATMSVC 20 /* ATM SVCs */ 181 #define AF_RDS 21 /* RDS sockets */ 182 #define AF_SNA 22 /* Linux SNA Project (nutters!) */ 183 #define AF_IRDA 23 /* IRDA sockets */ 184 #define AF_PPPOX 24 /* PPPoX sockets */ 185 #define AF_WANPIPE 25 /* Wanpipe API Sockets */ 186 #define AF_LLC 26 /* Linux LLC */ 187 #define AF_CAN 29 /* Controller Area Network */ 188 #define AF_TIPC 30 /* TIPC sockets */ 189 #define AF_BLUETOOTH 31 /* Bluetooth sockets */ 190 #define AF_IUCV 32 /* IUCV sockets */ 191 #define AF_RXRPC 33 /* RxRPC sockets */ 192 #define AF_ISDN 34 /* mISDN sockets */ 193 #define AF_PHONET 35 /* Phonet sockets */ 194 #define AF_IEEE802154 36 /* IEEE802154 sockets */ 195 #define AF_CAIF 37 /* CAIF sockets */ 196 #define AF_MAX 38 /* For now.. */ 197 198 /* Protocol families, same as address families. */ 199 #define PF_UNSPEC AF_UNSPEC 200 #define PF_UNIX AF_UNIX 201 #define PF_LOCAL AF_LOCAL 202 #define PF_INET AF_INET 203 #define PF_AX25 AF_AX25 204 #define PF_IPX AF_IPX 205 #define PF_APPLETALK AF_APPLETALK 206 #define PF_NETROM AF_NETROM 207 #define PF_BRIDGE AF_BRIDGE 208 #define PF_ATMPVC AF_ATMPVC 209 #define PF_X25 AF_X25 210 #define PF_INET6 AF_INET6 211 #define PF_ROSE AF_ROSE 212 #define PF_DECnet AF_DECnet 213 #define PF_NETBEUI AF_NETBEUI 214 #define PF_SECURITY AF_SECURITY 215 #define PF_KEY AF_KEY 216 #define PF_NETLINK AF_NETLINK 217 #define PF_ROUTE AF_ROUTE 218 #define PF_PACKET AF_PACKET 219 #define PF_ASH AF_ASH 220 #define PF_ECONET AF_ECONET 221 #define PF_ATMSVC AF_ATMSVC 222 #define PF_RDS AF_RDS 223 #define PF_SNA AF_SNA 224 #define PF_IRDA AF_IRDA 225 #define PF_PPPOX AF_PPPOX 226 #define PF_WANPIPE AF_WANPIPE 227 #define PF_LLC AF_LLC 228 #define PF_CAN AF_CAN 229 #define PF_TIPC AF_TIPC 230 #define PF_BLUETOOTH AF_BLUETOOTH 231 #define PF_IUCV AF_IUCV 232 #define PF_RXRPC AF_RXRPC 233 #define PF_ISDN AF_ISDN 234 #define PF_PHONET AF_PHONET 235 #define PF_IEEE802154 AF_IEEE802154 236 #define PF_CAIF AF_CAIF 237 #define PF_MAX AF_MAX 238 239 /* Maximum queue length specifiable by listen. */ 240 #define SOMAXCONN 128 241 242 /* Flags we can use with send/ and recv. 243 Added those for 1003.1g not all are supported yet 244 */ 245 246 #define MSG_OOB 1 247 #define MSG_PEEK 2 248 #define MSG_DONTROUTE 4 249 #define MSG_TRYHARD 4 /* Synonym for MSG_DONTROUTE for DECnet */ 250 #define MSG_CTRUNC 8 251 #define MSG_PROBE 0x10 /* Do not send. Only probe path f.e. for MTU */ 252 #define MSG_TRUNC 0x20 253 #define MSG_DONTWAIT 0x40 /* Nonblocking io */ 254 #define MSG_EOR 0x80 /* End of record */ 255 #define MSG_WAITALL 0x100 /* Wait for a full request */ 256 #define MSG_FIN 0x200 257 #define MSG_SYN 0x400 258 #define MSG_CONFIRM 0x800 /* Confirm path validity */ 259 #define MSG_RST 0x1000 260 #define MSG_ERRQUEUE 0x2000 /* Fetch message from error queue */ 261 #define MSG_NOSIGNAL 0x4000 /* Do not generate SIGPIPE */ 262 #define MSG_MORE 0x8000 /* Sender will send more */ 263 #define MSG_WAITFORONE 0x10000 /* recvmmsg(): block until 1+ packets avail */ 264 265 #define MSG_EOF MSG_FIN 266 267 #define MSG_CMSG_CLOEXEC 0x40000000 /* Set close_on_exit for file 268 descriptor received through 269 SCM_RIGHTS */ 270 #if defined(CONFIG_COMPAT) 271 #define MSG_CMSG_COMPAT 0x80000000 /* This message needs 32 bit fixups */ 272 #else 273 #define MSG_CMSG_COMPAT 0 /* We never have 32 bit fixups */ 274 #endif 275 276 277 /* Setsockoptions(2) level. Thanks to BSD these must match IPPROTO_xxx */ 278 #define SOL_IP 0 279 /* #define SOL_ICMP 1 No-no-no! Due to Linux :-) we cannot use SOL_ICMP=1 */ 280 #define SOL_TCP 6 281 #define SOL_UDP 17 282 #define SOL_IPV6 41 283 #define SOL_ICMPV6 58 284 #define SOL_SCTP 132 285 #define SOL_UDPLITE 136 /* UDP-Lite (RFC 3828) */ 286 #define SOL_RAW 255 287 #define SOL_IPX 256 288 #define SOL_AX25 257 289 #define SOL_ATALK 258 290 #define SOL_NETROM 259 291 #define SOL_ROSE 260 292 #define SOL_DECNET 261 293 #define SOL_X25 262 294 #define SOL_PACKET 263 295 #define SOL_ATM 264 /* ATM layer (cell level) */ 296 #define SOL_AAL 265 /* ATM Adaption Layer (packet level) */ 297 #define SOL_IRDA 266 298 #define SOL_NETBEUI 267 299 #define SOL_LLC 268 300 #define SOL_DCCP 269 301 #define SOL_NETLINK 270 302 #define SOL_TIPC 271 303 #define SOL_RXRPC 272 304 #define SOL_PPPOL2TP 273 305 #define SOL_BLUETOOTH 274 306 #define SOL_PNPIPE 275 307 #define SOL_RDS 276 308 #define SOL_IUCV 277 309 #define SOL_CAIF 278 310 311 /* IPX options */ 312 #define IPX_TYPE 1 313 314 #ifdef __KERNEL__ 315 extern void cred_to_ucred(struct pid *pid, const struct cred *cred, struct ucred *ucred); 316 317 extern int memcpy_fromiovec(unsigned char *kdata, struct iovec *iov, int len); 318 extern int memcpy_fromiovecend(unsigned char *kdata, const struct iovec *iov, 319 int offset, int len); 320 extern int csum_partial_copy_fromiovecend(unsigned char *kdata, 321 struct iovec *iov, 322 int offset, 323 unsigned int len, __wsum *csump); 324 325 extern long verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr *address, int mode); 326 extern int memcpy_toiovec(struct iovec *v, unsigned char *kdata, int len); 327 extern int memcpy_toiovecend(const struct iovec *v, unsigned char *kdata, 328 int offset, int len); 329 extern int move_addr_to_user(struct sockaddr *kaddr, int klen, void __user *uaddr, int __user *ulen); 330 extern int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr *kaddr); 331 extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data); 332 333 struct timespec; 334 335 extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, 336 unsigned int flags, struct timespec *timeout); 337 #endif 338 #endif /* not kernel and not glibc */ 339 #endif /* _LINUX_SOCKET_H */ 340