1 /* System-specific socket constants and types. Linux/MIPS version.
2 Copyright (C) 1991, 92, 1994-1999, 2000, 2001, 2004, 2005, 2006, 2007, 2008
3 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 02111-1307 USA. */
20
21 #ifndef __BITS_SOCKET_H
22 #define __BITS_SOCKET_H
23
24 #if !defined _SYS_SOCKET_H && !defined _NETINET_IN_H
25 # error "Never include <bits/socket.h> directly; use <sys/socket.h> instead."
26 #endif
27
28 #define __need_size_t
29 #include <stddef.h>
30
31 #include <sys/types.h>
32
33 /* Type for length arguments in socket calls. */
34 #ifndef __socklen_t_defined
35 typedef __socklen_t socklen_t;
36 # define __socklen_t_defined
37 #endif
38
39 /* Types of sockets. */
40 enum __socket_type
41 {
42 SOCK_DGRAM = 1, /* Connectionless, unreliable datagrams
43 of fixed maximum length. */
44 #define SOCK_DGRAM SOCK_DGRAM
45 SOCK_STREAM = 2, /* Sequenced, reliable, connection-based
46 byte streams. */
47 #define SOCK_STREAM SOCK_STREAM
48 SOCK_RAW = 3, /* Raw protocol interface. */
49 #define SOCK_RAW SOCK_RAW
50 SOCK_RDM = 4, /* Reliably-delivered messages. */
51 #define SOCK_RDM SOCK_RDM
52 SOCK_SEQPACKET = 5, /* Sequenced, reliable, connection-based,
53 datagrams of fixed maximum length. */
54 #define SOCK_SEQPACKET SOCK_SEQPACKET
55 SOCK_PACKET = 10 /* Linux specific way of getting packets
56 at the dev level. For writing rarp and
57 other similar things on the user level. */
58 #define SOCK_PACKET SOCK_PACKET
59 };
60
61 /* Protocol families. */
62 #define PF_UNSPEC 0 /* Unspecified. */
63 #define PF_LOCAL 1 /* Local to host (pipes and file-domain). */
64 #define PF_UNIX PF_LOCAL /* POSIX name for PF_LOCAL. */
65 #define PF_FILE PF_LOCAL /* Another non-standard name for PF_LOCAL. */
66 #define PF_INET 2 /* IP protocol family. */
67 #define PF_AX25 3 /* Amateur Radio AX.25. */
68 #define PF_IPX 4 /* Novell Internet Protocol. */
69 #define PF_APPLETALK 5 /* Appletalk DDP. */
70 #define PF_NETROM 6 /* Amateur radio NetROM. */
71 #define PF_BRIDGE 7 /* Multiprotocol bridge. */
72 #define PF_ATMPVC 8 /* ATM PVCs. */
73 #define PF_X25 9 /* Reserved for X.25 project. */
74 #define PF_INET6 10 /* IP version 6. */
75 #define PF_ROSE 11 /* Amateur Radio X.25 PLP. */
76 #define PF_DECnet 12 /* Reserved for DECnet project. */
77 #define PF_NETBEUI 13 /* Reserved for 802.2LLC project. */
78 #define PF_SECURITY 14 /* Security callback pseudo AF. */
79 #define PF_KEY 15 /* PF_KEY key management API. */
80 #define PF_NETLINK 16
81 #define PF_ROUTE PF_NETLINK /* Alias to emulate 4.4BSD. */
82 #define PF_PACKET 17 /* Packet family. */
83 #define PF_ASH 18 /* Ash. */
84 #define PF_ECONET 19 /* Acorn Econet. */
85 #define PF_ATMSVC 20 /* ATM SVCs. */
86 #define PF_SNA 22 /* Linux SNA Project */
87 #define PF_IRDA 23 /* IRDA sockets. */
88 #define PF_PPPOX 24 /* PPPoX sockets. */
89 #define PF_WANPIPE 25 /* Wanpipe API sockets. */
90 #define PF_BLUETOOTH 31 /* Bluetooth sockets. */
91 #define PF_IUCV 32 /* IUCV sockets. */
92 #define PF_RXRPC 33 /* RxRPC sockets. */
93 #define PF_MAX 34 /* For now.. */
94
95 /* Address families. */
96 #define AF_UNSPEC PF_UNSPEC
97 #define AF_LOCAL PF_LOCAL
98 #define AF_UNIX PF_UNIX
99 #define AF_FILE PF_FILE
100 #define AF_INET PF_INET
101 #define AF_AX25 PF_AX25
102 #define AF_IPX PF_IPX
103 #define AF_APPLETALK PF_APPLETALK
104 #define AF_NETROM PF_NETROM
105 #define AF_BRIDGE PF_BRIDGE
106 #define AF_ATMPVC PF_ATMPVC
107 #define AF_X25 PF_X25
108 #define AF_INET6 PF_INET6
109 #define AF_ROSE PF_ROSE
110 #define AF_DECnet PF_DECnet
111 #define AF_NETBEUI PF_NETBEUI
112 #define AF_SECURITY PF_SECURITY
113 #define AF_KEY PF_KEY
114 #define AF_NETLINK PF_NETLINK
115 #define AF_ROUTE PF_ROUTE
116 #define AF_PACKET PF_PACKET
117 #define AF_ASH PF_ASH
118 #define AF_ECONET PF_ECONET
119 #define AF_ATMSVC PF_ATMSVC
120 #define AF_SNA PF_SNA
121 #define AF_IRDA PF_IRDA
122 #define AF_PPPOX PF_PPPOX
123 #define AF_WANPIPE PF_WANPIPE
124 #define AF_BLUETOOTH PF_BLUETOOTH
125 #define AF_IUCV PF_IUCV
126 #define AF_RXRPC PF_RXRPC
127 #define AF_MAX PF_MAX
128
129 /* Socket level values. Others are defined in the appropriate headers.
130
131 XXX These definitions also should go into the appropriate headers as
132 far as they are available. */
133 #define SOL_RAW 255
134 #define SOL_DECNET 261
135 #define SOL_X25 262
136 #define SOL_PACKET 263
137 #define SOL_ATM 264 /* ATM layer (cell level). */
138 #define SOL_AAL 265 /* ATM Adaption Layer (packet level). */
139 #define SOL_IRDA 266
140
141 /* Maximum queue length specifiable by listen. */
142 #define SOMAXCONN 128
143
144 /* Get the definition of the macro to define the common sockaddr members. */
145 #include <bits/sockaddr.h>
146
147 /* Structure describing a generic socket address. */
148 struct sockaddr
149 {
150 __SOCKADDR_COMMON (sa_); /* Common data: address family and length. */
151 char sa_data[14]; /* Address data. */
152 };
153
154
155 /* Structure large enough to hold any socket address (with the historical
156 exception of AF_UNIX). We reserve 128 bytes. */
157 #define __ss_aligntype unsigned long int
158 #define _SS_SIZE 128
159 #define _SS_PADSIZE (_SS_SIZE - (2 * sizeof (__ss_aligntype)))
160
161 struct sockaddr_storage
162 {
163 __SOCKADDR_COMMON (ss_); /* Address family, etc. */
164 __ss_aligntype __ss_align; /* Force desired alignment. */
165 char __ss_padding[_SS_PADSIZE];
166 };
167
168
169 /* Bits in the FLAGS argument to `send', `recv', et al. */
170 enum
171 {
172 MSG_OOB = 0x01, /* Process out-of-band data. */
173 #define MSG_OOB MSG_OOB
174 MSG_PEEK = 0x02, /* Peek at incoming messages. */
175 #define MSG_PEEK MSG_PEEK
176 MSG_DONTROUTE = 0x04, /* Don't use local routing. */
177 #define MSG_DONTROUTE MSG_DONTROUTE
178 #ifdef __USE_GNU
179 /* DECnet uses a different name. */
180 MSG_TRYHARD = MSG_DONTROUTE,
181 # define MSG_TRYHARD MSG_DONTROUTE
182 #endif
183 MSG_CTRUNC = 0x08, /* Control data lost before delivery. */
184 #define MSG_CTRUNC MSG_CTRUNC
185 MSG_PROXY = 0x10, /* Supply or ask second address. */
186 #define MSG_PROXY MSG_PROXY
187 MSG_TRUNC = 0x20,
188 #define MSG_TRUNC MSG_TRUNC
189 MSG_DONTWAIT = 0x40, /* Nonblocking IO. */
190 #define MSG_DONTWAIT MSG_DONTWAIT
191 MSG_EOR = 0x80, /* End of record. */
192 #define MSG_EOR MSG_EOR
193 MSG_WAITALL = 0x100, /* Wait for a full request. */
194 #define MSG_WAITALL MSG_WAITALL
195 MSG_FIN = 0x200,
196 #define MSG_FIN MSG_FIN
197 MSG_SYN = 0x400,
198 #define MSG_SYN MSG_SYN
199 MSG_CONFIRM = 0x800, /* Confirm path validity. */
200 #define MSG_CONFIRM MSG_CONFIRM
201 MSG_RST = 0x1000,
202 #define MSG_RST MSG_RST
203 MSG_ERRQUEUE = 0x2000, /* Fetch message from error queue. */
204 #define MSG_ERRQUEUE MSG_ERRQUEUE
205 MSG_NOSIGNAL = 0x4000, /* Do not generate SIGPIPE. */
206 #define MSG_NOSIGNAL MSG_NOSIGNAL
207 MSG_MORE = 0x8000, /* Sender will send more. */
208 #define MSG_MORE MSG_MORE
209
210 MSG_CMSG_CLOEXEC = 0x40000000 /* Set close_on_exit for file
211 descriptor received through
212 SCM_RIGHTS. */
213 #define MSG_CMSG_CLOEXEC MSG_CMSG_CLOEXEC
214 };
215
216
217 /* Structure describing messages sent by
218 `sendmsg' and received by `recvmsg'. */
219 struct msghdr
220 {
221 void *msg_name; /* Address to send to/receive from. */
222 socklen_t msg_namelen; /* Length of address data. */
223
224 struct iovec *msg_iov; /* Vector of data to send/receive into. */
225 size_t msg_iovlen; /* Number of elements in the vector. */
226
227 void *msg_control; /* Ancillary data (eg BSD filedesc passing). */
228 size_t msg_controllen; /* Ancillary data buffer length. */
229
230 int msg_flags; /* Flags on received message. */
231 };
232
233 /* Structure used for storage of ancillary data object information. */
234 struct cmsghdr
235 {
236 size_t cmsg_len; /* Length of data in cmsg_data plus length
237 of cmsghdr structure. */
238 int cmsg_level; /* Originating protocol. */
239 int cmsg_type; /* Protocol specific type. */
240 #if (!defined __STRICT_ANSI__ && __GNUC__ >= 2) || __STDC_VERSION__ >= 199901L
241 __extension__ unsigned char __cmsg_data __flexarr; /* Ancillary data. */
242 #endif
243 };
244
245 /* Ancillary data object manipulation macros. */
246 #if (!defined __STRICT_ANSI__ && __GNUC__ >= 2) || __STDC_VERSION__ >= 199901L
247 # define CMSG_DATA(cmsg) ((cmsg)->__cmsg_data)
248 #else
249 # define CMSG_DATA(cmsg) ((unsigned char *) ((struct cmsghdr *) (cmsg) + 1))
250 #endif
251 #define CMSG_NXTHDR(mhdr, cmsg) __cmsg_nxthdr (mhdr, cmsg)
252 #define CMSG_FIRSTHDR(mhdr) \
253 ((size_t) (mhdr)->msg_controllen >= sizeof (struct cmsghdr) \
254 ? (struct cmsghdr *) (mhdr)->msg_control : (struct cmsghdr *) 0)
255 #define CMSG_ALIGN(len) (((len) + sizeof (size_t) - 1) \
256 & (size_t) ~(sizeof (size_t) - 1))
257 #define CMSG_SPACE(len) (CMSG_ALIGN (len) \
258 + CMSG_ALIGN (sizeof (struct cmsghdr)))
259 #define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
260
261 extern struct cmsghdr *__cmsg_nxthdr (struct msghdr *__mhdr,
262 struct cmsghdr *__cmsg) __THROW;
263 #ifdef __USE_EXTERN_INLINES
264 # ifndef _EXTERN_INLINE
265 # define _EXTERN_INLINE __extern_inline
266 # endif
267 _EXTERN_INLINE struct cmsghdr *
__NTH(__cmsg_nxthdr (struct msghdr * __mhdr,struct cmsghdr * __cmsg))268 __NTH (__cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg))
269 {
270 if ((size_t) __cmsg->cmsg_len < sizeof (struct cmsghdr))
271 /* The kernel header does this so there may be a reason. */
272 return 0;
273
274 __cmsg = (struct cmsghdr *) ((unsigned char *) __cmsg
275 + CMSG_ALIGN (__cmsg->cmsg_len));
276 if ((unsigned char *) (__cmsg + 1) > ((unsigned char *) __mhdr->msg_control
277 + __mhdr->msg_controllen)
278 || ((unsigned char *) __cmsg + CMSG_ALIGN (__cmsg->cmsg_len)
279 > ((unsigned char *) __mhdr->msg_control + __mhdr->msg_controllen)))
280 /* No more entries. */
281 return 0;
282 return __cmsg;
283 }
284 #endif /* Use `extern inline'. */
285
286 /* Socket level message types. This must match the definitions in
287 <linux/socket.h>. */
288 enum
289 {
290 SCM_RIGHTS = 0x01 /* Transfer file descriptors. */
291 #define SCM_RIGHTS SCM_RIGHTS
292 #ifdef __USE_BSD
293 , SCM_CREDENTIALS = 0x02 /* Credentials passing. */
294 # define SCM_CREDENTIALS SCM_CREDENTIALS
295 #endif
296 };
297
298 #ifdef __USE_GNU
299 /* User visible structure for SCM_CREDENTIALS message */
300 struct ucred
301 {
302 pid_t pid; /* PID of sending process. */
303 uid_t uid; /* UID of sending process. */
304 gid_t gid; /* GID of sending process. */
305 };
306 #endif
307
308 /* Ugly workaround for unclean kernel headers. */
309 #if !defined __USE_MISC && !defined __USE_GNU
310 # ifndef FIOGETOWN
311 # define __SYS_SOCKET_H_undef_FIOGETOWN
312 # endif
313 # ifndef FIOSETOWN
314 # define __SYS_SOCKET_H_undef_FIOSETOWN
315 # endif
316 # ifndef SIOCATMARK
317 # define __SYS_SOCKET_H_undef_SIOCATMARK
318 # endif
319 # ifndef SIOCGPGRP
320 # define __SYS_SOCKET_H_undef_SIOCGPGRP
321 # endif
322 # ifndef SIOCGSTAMP
323 # define __SYS_SOCKET_H_undef_SIOCGSTAMP
324 # endif
325 # ifndef SIOCGSTAMPNS
326 # define __SYS_SOCKET_H_undef_SIOCGSTAMPNS
327 # endif
328 # ifndef SIOCSPGRP
329 # define __SYS_SOCKET_H_undef_SIOCSPGRP
330 # endif
331 #endif
332
333 /* Get socket manipulation related informations from kernel headers. */
334 #include <asm/socket.h>
335
336 #if !defined __USE_MISC && !defined __USE_GNU
337 # ifdef __SYS_SOCKET_H_undef_FIOGETOWN
338 # undef __SYS_SOCKET_H_undef_FIOGETOWN
339 # undef FIOGETOWN
340 # endif
341 # ifdef __SYS_SOCKET_H_undef_FIOSETOWN
342 # undef __SYS_SOCKET_H_undef_FIOSETOWN
343 # undef FIOSETOWN
344 # endif
345 # ifdef __SYS_SOCKET_H_undef_SIOCATMARK
346 # undef __SYS_SOCKET_H_undef_SIOCATMARK
347 # undef SIOCATMARK
348 # endif
349 # ifdef __SYS_SOCKET_H_undef_SIOCGPGRP
350 # undef __SYS_SOCKET_H_undef_SIOCGPGRP
351 # undef SIOCGPGRP
352 # endif
353 # ifdef __SYS_SOCKET_H_undef_SIOCGSTAMP
354 # undef __SYS_SOCKET_H_undef_SIOCGSTAMP
355 # undef SIOCGSTAMP
356 # endif
357 # ifdef __SYS_SOCKET_H_undef_SIOCGSTAMPNS
358 # undef __SYS_SOCKET_H_undef_SIOCGSTAMPNS
359 # undef SIOCGSTAMPNS
360 # endif
361 # ifdef __SYS_SOCKET_H_undef_SIOCSPGRP
362 # undef __SYS_SOCKET_H_undef_SIOCSPGRP
363 # undef SIOCSPGRP
364 # endif
365 #endif
366
367 /* Structure used to manipulate the SO_LINGER option. */
368 struct linger
369 {
370 int l_onoff; /* Nonzero to linger on close. */
371 int l_linger; /* Time to linger. */
372 };
373
374 #endif /* bits/socket.h */
375