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