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1da177e4 LT |
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 | ||
304c209c | 19 | #if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2) |
1da177e4 | 20 | |
1da177e4 LT |
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 | ||
20380731 ACM |
27 | #ifdef CONFIG_PROC_FS |
28 | struct seq_file; | |
29 | extern void socket_seq_show(struct seq_file *seq); | |
30 | #endif | |
31 | ||
1da177e4 LT |
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 | #ifdef __KERNEL__ | |
106 | #define __KINLINE static inline | |
107 | #elif defined(__GNUC__) | |
108 | #define __KINLINE static __inline__ | |
109 | #elif defined(__cplusplus) | |
110 | #define __KINLINE static inline | |
111 | #else | |
112 | #define __KINLINE static | |
113 | #endif | |
114 | ||
115 | ||
116 | /* | |
117 | * Get the next cmsg header | |
118 | * | |
119 | * PLEASE, do not touch this function. If you think, that it is | |
120 | * incorrect, grep kernel sources and think about consequences | |
121 | * before trying to improve it. | |
122 | * | |
123 | * Now it always returns valid, not truncated ancillary object | |
124 | * HEADER. But caller still MUST check, that cmsg->cmsg_len is | |
125 | * inside range, given by msg->msg_controllen before using | |
126 | * ancillary object DATA. --ANK (980731) | |
127 | */ | |
128 | ||
129 | __KINLINE struct cmsghdr * __cmsg_nxthdr(void *__ctl, __kernel_size_t __size, | |
130 | struct cmsghdr *__cmsg) | |
131 | { | |
132 | struct cmsghdr * __ptr; | |
133 | ||
134 | __ptr = (struct cmsghdr*)(((unsigned char *) __cmsg) + CMSG_ALIGN(__cmsg->cmsg_len)); | |
135 | if ((unsigned long)((char*)(__ptr+1) - (char *) __ctl) > __size) | |
136 | return (struct cmsghdr *)0; | |
137 | ||
138 | return __ptr; | |
139 | } | |
140 | ||
141 | __KINLINE struct cmsghdr * cmsg_nxthdr (struct msghdr *__msg, struct cmsghdr *__cmsg) | |
142 | { | |
143 | return __cmsg_nxthdr(__msg->msg_control, __msg->msg_controllen, __cmsg); | |
144 | } | |
145 | ||
146 | /* "Socket"-level control message types: */ | |
147 | ||
148 | #define SCM_RIGHTS 0x01 /* rw: access rights (array of int) */ | |
149 | #define SCM_CREDENTIALS 0x02 /* rw: struct ucred */ | |
2c7946a7 | 150 | #define SCM_SECURITY 0x03 /* rw: security label */ |
1da177e4 LT |
151 | |
152 | struct ucred { | |
153 | __u32 pid; | |
154 | __u32 uid; | |
155 | __u32 gid; | |
156 | }; | |
157 | ||
158 | /* Supported address families. */ | |
159 | #define AF_UNSPEC 0 | |
160 | #define AF_UNIX 1 /* Unix domain sockets */ | |
161 | #define AF_LOCAL 1 /* POSIX name for AF_UNIX */ | |
162 | #define AF_INET 2 /* Internet IP Protocol */ | |
163 | #define AF_AX25 3 /* Amateur Radio AX.25 */ | |
164 | #define AF_IPX 4 /* Novell IPX */ | |
165 | #define AF_APPLETALK 5 /* AppleTalk DDP */ | |
166 | #define AF_NETROM 6 /* Amateur Radio NET/ROM */ | |
167 | #define AF_BRIDGE 7 /* Multiprotocol bridge */ | |
168 | #define AF_ATMPVC 8 /* ATM PVCs */ | |
169 | #define AF_X25 9 /* Reserved for X.25 project */ | |
170 | #define AF_INET6 10 /* IP version 6 */ | |
171 | #define AF_ROSE 11 /* Amateur Radio X.25 PLP */ | |
172 | #define AF_DECnet 12 /* Reserved for DECnet project */ | |
173 | #define AF_NETBEUI 13 /* Reserved for 802.2LLC project*/ | |
174 | #define AF_SECURITY 14 /* Security callback pseudo AF */ | |
175 | #define AF_KEY 15 /* PF_KEY key management API */ | |
176 | #define AF_NETLINK 16 | |
177 | #define AF_ROUTE AF_NETLINK /* Alias to emulate 4.4BSD */ | |
178 | #define AF_PACKET 17 /* Packet family */ | |
179 | #define AF_ASH 18 /* Ash */ | |
180 | #define AF_ECONET 19 /* Acorn Econet */ | |
181 | #define AF_ATMSVC 20 /* ATM SVCs */ | |
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 */ | |
cd05acfe | 187 | #define AF_CAN 29 /* Controller Area Network */ |
b97bf3fd | 188 | #define AF_TIPC 30 /* TIPC sockets */ |
1da177e4 | 189 | #define AF_BLUETOOTH 31 /* Bluetooth sockets */ |
eac3731b | 190 | #define AF_IUCV 32 /* IUCV sockets */ |
17926a79 | 191 | #define AF_RXRPC 33 /* RxRPC sockets */ |
04578dd3 | 192 | #define AF_ISDN 34 /* mISDN sockets */ |
bce7b154 RDC |
193 | #define AF_PHONET 35 /* Phonet sockets */ |
194 | #define AF_MAX 36 /* For now.. */ | |
1da177e4 LT |
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_SNA AF_SNA | |
221 | #define PF_IRDA AF_IRDA | |
222 | #define PF_PPPOX AF_PPPOX | |
223 | #define PF_WANPIPE AF_WANPIPE | |
224 | #define PF_LLC AF_LLC | |
cd05acfe | 225 | #define PF_CAN AF_CAN |
b97bf3fd | 226 | #define PF_TIPC AF_TIPC |
1da177e4 | 227 | #define PF_BLUETOOTH AF_BLUETOOTH |
eac3731b | 228 | #define PF_IUCV AF_IUCV |
17926a79 | 229 | #define PF_RXRPC AF_RXRPC |
04578dd3 | 230 | #define PF_ISDN AF_ISDN |
bce7b154 | 231 | #define PF_PHONET AF_PHONET |
1da177e4 LT |
232 | #define PF_MAX AF_MAX |
233 | ||
234 | /* Maximum queue length specifiable by listen. */ | |
235 | #define SOMAXCONN 128 | |
236 | ||
237 | /* Flags we can use with send/ and recv. | |
238 | Added those for 1003.1g not all are supported yet | |
239 | */ | |
240 | ||
241 | #define MSG_OOB 1 | |
242 | #define MSG_PEEK 2 | |
243 | #define MSG_DONTROUTE 4 | |
244 | #define MSG_TRYHARD 4 /* Synonym for MSG_DONTROUTE for DECnet */ | |
245 | #define MSG_CTRUNC 8 | |
246 | #define MSG_PROBE 0x10 /* Do not send. Only probe path f.e. for MTU */ | |
247 | #define MSG_TRUNC 0x20 | |
248 | #define MSG_DONTWAIT 0x40 /* Nonblocking io */ | |
249 | #define MSG_EOR 0x80 /* End of record */ | |
250 | #define MSG_WAITALL 0x100 /* Wait for a full request */ | |
251 | #define MSG_FIN 0x200 | |
252 | #define MSG_SYN 0x400 | |
253 | #define MSG_CONFIRM 0x800 /* Confirm path validity */ | |
254 | #define MSG_RST 0x1000 | |
255 | #define MSG_ERRQUEUE 0x2000 /* Fetch message from error queue */ | |
256 | #define MSG_NOSIGNAL 0x4000 /* Do not generate SIGPIPE */ | |
257 | #define MSG_MORE 0x8000 /* Sender will send more */ | |
258 | ||
259 | #define MSG_EOF MSG_FIN | |
260 | ||
4a19542e UD |
261 | #define MSG_CMSG_CLOEXEC 0x40000000 /* Set close_on_exit for file |
262 | descriptor received through | |
263 | SCM_RIGHTS */ | |
1da177e4 LT |
264 | #if defined(CONFIG_COMPAT) |
265 | #define MSG_CMSG_COMPAT 0x80000000 /* This message needs 32 bit fixups */ | |
266 | #else | |
267 | #define MSG_CMSG_COMPAT 0 /* We never have 32 bit fixups */ | |
268 | #endif | |
269 | ||
270 | ||
271 | /* Setsockoptions(2) level. Thanks to BSD these must match IPPROTO_xxx */ | |
272 | #define SOL_IP 0 | |
273 | /* #define SOL_ICMP 1 No-no-no! Due to Linux :-) we cannot use SOL_ICMP=1 */ | |
274 | #define SOL_TCP 6 | |
275 | #define SOL_UDP 17 | |
276 | #define SOL_IPV6 41 | |
277 | #define SOL_ICMPV6 58 | |
278 | #define SOL_SCTP 132 | |
ba4e58ec | 279 | #define SOL_UDPLITE 136 /* UDP-Lite (RFC 3828) */ |
1da177e4 LT |
280 | #define SOL_RAW 255 |
281 | #define SOL_IPX 256 | |
282 | #define SOL_AX25 257 | |
283 | #define SOL_ATALK 258 | |
284 | #define SOL_NETROM 259 | |
285 | #define SOL_ROSE 260 | |
286 | #define SOL_DECNET 261 | |
287 | #define SOL_X25 262 | |
288 | #define SOL_PACKET 263 | |
289 | #define SOL_ATM 264 /* ATM layer (cell level) */ | |
290 | #define SOL_AAL 265 /* ATM Adaption Layer (packet level) */ | |
291 | #define SOL_IRDA 266 | |
292 | #define SOL_NETBEUI 267 | |
293 | #define SOL_LLC 268 | |
7c657876 | 294 | #define SOL_DCCP 269 |
9a4595bc | 295 | #define SOL_NETLINK 270 |
b97bf3fd | 296 | #define SOL_TIPC 271 |
17926a79 | 297 | #define SOL_RXRPC 272 |
cf14a4d0 | 298 | #define SOL_PPPOL2TP 273 |
2cb3377a | 299 | #define SOL_BLUETOOTH 274 |
02a47617 | 300 | #define SOL_PNPIPE 275 |
1da177e4 LT |
301 | |
302 | /* IPX options */ | |
303 | #define IPX_TYPE 1 | |
304 | ||
305 | #ifdef __KERNEL__ | |
306 | extern int memcpy_fromiovec(unsigned char *kdata, struct iovec *iov, int len); | |
307 | extern int memcpy_fromiovecend(unsigned char *kdata, struct iovec *iov, | |
308 | int offset, int len); | |
309 | extern int csum_partial_copy_fromiovecend(unsigned char *kdata, | |
310 | struct iovec *iov, | |
311 | int offset, | |
44bb9363 | 312 | unsigned int len, __wsum *csump); |
1da177e4 | 313 | |
230b1839 | 314 | extern int verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr *address, int mode); |
1da177e4 | 315 | extern int memcpy_toiovec(struct iovec *v, unsigned char *kdata, int len); |
230b1839 YH |
316 | extern int move_addr_to_user(struct sockaddr *kaddr, int klen, void __user *uaddr, int __user *ulen); |
317 | extern int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr *kaddr); | |
1da177e4 LT |
318 | extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data); |
319 | ||
320 | #endif | |
321 | #endif /* not kernel and not glibc */ | |
322 | #endif /* _LINUX_SOCKET_H */ |