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