Line data Source code
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 1 : /* _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 : #define __sockaddr_check_size(size) \
28 : BUILD_BUG_ON(((size) > sizeof(struct __kernel_sockaddr_storage)))
29 :
30 : #ifdef __KERNEL__
31 : # ifdef CONFIG_PROC_FS
32 : struct seq_file;
33 : extern void socket_seq_show(struct seq_file *seq);
34 : # endif
35 : #endif /* __KERNEL__ */
36 :
37 1 : typedef unsigned short sa_family_t;
38 1 :
39 : /*
40 : * 1003.1g requires sa_family_t and that sa_data is char.
41 : */
42 :
43 : struct sockaddr {
44 : sa_family_t sa_family; /* address family, AF_xxx */
45 : char sa_data[14]; /* 14 bytes of protocol address */
46 : };
47 :
48 : struct linger {
49 : int l_onoff; /* Linger active */
50 : int l_linger; /* How long to linger for */
51 : };
52 :
53 : #define sockaddr_storage __kernel_sockaddr_storage
54 :
55 : /*
56 : * As we do 4.4BSD message passing we use a 4.4BSD message passing
57 : * system, not 4.3. Thus msg_accrights(len) are now missing. They
58 : * belong in an obscure libc emulation or the bin.
59 : */
60 :
61 : struct msghdr {
62 : void * msg_name; /* Socket name */
63 : int msg_namelen; /* Length of name */
64 : struct iovec * msg_iov; /* Data blocks */
65 : __kernel_size_t msg_iovlen; /* Number of blocks */
66 : void * msg_control; /* Per protocol magic (eg BSD file descriptor passing) */
67 : __kernel_size_t msg_controllen; /* Length of cmsg list */
68 : unsigned msg_flags;
69 : };
70 :
71 : /* For recvmmsg/sendmmsg */
72 : struct mmsghdr {
73 : struct msghdr msg_hdr;
74 : unsigned msg_len;
75 : };
76 :
77 : /*
78 : * POSIX 1003.1g - ancillary data object information
79 : * Ancillary data consits of a sequence of pairs of
80 : * (cmsghdr, cmsg_data[])
81 : */
82 :
83 : struct cmsghdr {
84 : __kernel_size_t cmsg_len; /* data byte count, including hdr */
85 : int cmsg_level; /* originating protocol */
86 : int cmsg_type; /* protocol-specific type */
87 : };
88 :
89 : /*
90 : * Ancilliary data object information MACROS
91 : * Table 5-14 of POSIX 1003.1g
92 : */
93 :
94 : #define __CMSG_NXTHDR(ctl, len, cmsg) __cmsg_nxthdr((ctl),(len),(cmsg))
95 : #define CMSG_NXTHDR(mhdr, cmsg) cmsg_nxthdr((mhdr), (cmsg))
96 :
97 : #define CMSG_ALIGN(len) ( ((len)+sizeof(long)-1) & ~(sizeof(long)-1) )
98 :
99 : #define CMSG_DATA(cmsg) ((void *)((char *)(cmsg) + CMSG_ALIGN(sizeof(struct cmsghdr))))
100 : #define CMSG_SPACE(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + CMSG_ALIGN(len))
101 : #define CMSG_LEN(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + (len))
102 :
103 : #define __CMSG_FIRSTHDR(ctl,len) ((len) >= sizeof(struct cmsghdr) ? \
104 : (struct cmsghdr *)(ctl) : \
105 : (struct cmsghdr *)NULL)
106 : #define CMSG_FIRSTHDR(msg) __CMSG_FIRSTHDR((msg)->msg_control, (msg)->msg_controllen)
107 : #define CMSG_OK(mhdr, cmsg) ((cmsg)->cmsg_len >= sizeof(struct cmsghdr) && \
108 : (cmsg)->cmsg_len <= (unsigned long) \
109 : ((mhdr)->msg_controllen - \
110 : ((char *)(cmsg) - (char *)(mhdr)->msg_control)))
111 :
112 : /*
113 : * Get the next cmsg header
114 : *
115 : * PLEASE, do not touch this function. If you think, that it is
116 : * incorrect, grep kernel sources and think about consequences
117 : * before trying to improve it.
118 : *
119 : * Now it always returns valid, not truncated ancillary object
120 : * HEADER. But caller still MUST check, that cmsg->cmsg_len is
121 : * inside range, given by msg->msg_controllen before using
122 : * ancillary object DATA. --ANK (980731)
123 : */
124 :
125 : static inline struct cmsghdr * __cmsg_nxthdr(void *__ctl, __kernel_size_t __size,
126 : struct cmsghdr *__cmsg)
127 : {
128 : struct cmsghdr * __ptr;
129 :
130 : __ptr = (struct cmsghdr*)(((unsigned char *) __cmsg) + CMSG_ALIGN(__cmsg->cmsg_len));
131 : if ((unsigned long)((char*)(__ptr+1) - (char *) __ctl) > __size)
132 : return (struct cmsghdr *)0;
133 :
134 : return __ptr;
135 : }
136 :
137 : static inline struct cmsghdr * cmsg_nxthdr (struct msghdr *__msg, struct cmsghdr *__cmsg)
138 : {
139 : return __cmsg_nxthdr(__msg->msg_control, __msg->msg_controllen, __cmsg);
140 : }
141 :
142 : /* "Socket"-level control message types: */
143 :
144 : #define SCM_RIGHTS 0x01 /* rw: access rights (array of int) */
145 : #define SCM_CREDENTIALS 0x02 /* rw: struct ucred */
146 : #define SCM_SECURITY 0x03 /* rw: security label */
147 :
148 : struct ucred {
149 : __u32 pid;
150 : __u32 uid;
151 : __u32 gid;
152 : };
153 :
154 : /* Supported address families. */
155 : #define AF_UNSPEC 0
156 : #define AF_UNIX 1 /* Unix domain sockets */
157 : #define AF_LOCAL 1 /* POSIX name for AF_UNIX */
158 : #define AF_INET 2 /* Internet IP Protocol */
159 : #define AF_AX25 3 /* Amateur Radio AX.25 */
160 : #define AF_IPX 4 /* Novell IPX */
161 : #define AF_APPLETALK 5 /* AppleTalk DDP */
162 : #define AF_NETROM 6 /* Amateur Radio NET/ROM */
163 : #define AF_BRIDGE 7 /* Multiprotocol bridge */
164 : #define AF_ATMPVC 8 /* ATM PVCs */
165 : #define AF_X25 9 /* Reserved for X.25 project */
166 : #define AF_INET6 10 /* IP version 6 */
167 : #define AF_ROSE 11 /* Amateur Radio X.25 PLP */
168 : #define AF_DECnet 12 /* Reserved for DECnet project */
169 : #define AF_NETBEUI 13 /* Reserved for 802.2LLC project*/
170 : #define AF_SECURITY 14 /* Security callback pseudo AF */
171 : #define AF_KEY 15 /* PF_KEY key management API */
172 : #define AF_NETLINK 16
173 : #define AF_ROUTE AF_NETLINK /* Alias to emulate 4.4BSD */
174 : #define AF_PACKET 17 /* Packet family */
175 : #define AF_ASH 18 /* Ash */
176 : #define AF_ECONET 19 /* Acorn Econet */
177 : #define AF_ATMSVC 20 /* ATM SVCs */
178 : #define AF_RDS 21 /* RDS sockets */
179 : #define AF_SNA 22 /* Linux SNA Project (nutters!) */
180 : #define AF_IRDA 23 /* IRDA sockets */
181 : #define AF_PPPOX 24 /* PPPoX sockets */
182 : #define AF_WANPIPE 25 /* Wanpipe API Sockets */
183 : #define AF_LLC 26 /* Linux LLC */
184 : #define AF_CAN 29 /* Controller Area Network */
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_ISDN 34 /* mISDN sockets */
190 : #define AF_PHONET 35 /* Phonet sockets */
191 : #define AF_IEEE802154 36 /* IEEE802154 sockets */
192 : #define AF_MAX 37 /* 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_RDS AF_RDS
219 : #define PF_SNA AF_SNA
220 : #define PF_IRDA AF_IRDA
221 : #define PF_PPPOX AF_PPPOX
222 : #define PF_WANPIPE AF_WANPIPE
223 : #define PF_LLC AF_LLC
224 : #define PF_CAN AF_CAN
225 : #define PF_TIPC AF_TIPC
226 : #define PF_BLUETOOTH AF_BLUETOOTH
227 : #define PF_IUCV AF_IUCV
228 : #define PF_RXRPC AF_RXRPC
229 : #define PF_ISDN AF_ISDN
230 : #define PF_PHONET AF_PHONET
231 : #define PF_IEEE802154 AF_IEEE802154
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 :
261 : #define MSG_CMSG_CLOEXEC 0x40000000 /* Set close_on_exit for file
262 : descriptor received through
263 : SCM_RIGHTS */
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
279 : #define SOL_UDPLITE 136 /* UDP-Lite (RFC 3828) */
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
294 : #define SOL_DCCP 269
295 : #define SOL_NETLINK 270
296 : #define SOL_TIPC 271
297 : #define SOL_RXRPC 272
298 : #define SOL_PPPOL2TP 273
299 : #define SOL_BLUETOOTH 274
300 : #define SOL_PNPIPE 275
301 : #define SOL_RDS 276
302 : #define SOL_IUCV 277
303 :
304 : /* IPX options */
305 : #define IPX_TYPE 1
306 :
307 : #ifdef __KERNEL__
308 : extern int memcpy_fromiovec(unsigned char *kdata, struct iovec *iov, int len);
309 : extern int memcpy_fromiovecend(unsigned char *kdata, const struct iovec *iov,
310 : int offset, int len);
311 : extern int csum_partial_copy_fromiovecend(unsigned char *kdata,
312 : struct iovec *iov,
313 : int offset,
314 : unsigned int len, __wsum *csump);
315 :
316 : extern int verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr *address, int mode);
317 : extern int memcpy_toiovec(struct iovec *v, unsigned char *kdata, int len);
318 : extern int memcpy_toiovecend(const struct iovec *v, unsigned char *kdata,
319 : int offset, int len);
320 : extern int move_addr_to_user(struct sockaddr *kaddr, int klen, void __user *uaddr, int __user *ulen);
321 : extern int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr *kaddr);
322 : extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data);
323 1 :
324 : struct timespec;
325 :
326 : extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen,
327 : unsigned int flags, struct timespec *timeout);
328 : #endif
329 : #endif /* not kernel and not glibc */
330 : #endif /* _LINUX_SOCKET_H */
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