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df4ef2ab | 1 | /* System-specific socket constants and types. Linux version. |
17c7887b | 2 | Copyright (C) 1991,92,94,95,96,97,98,99 Free Software Foundation, Inc. |
df4ef2ab UD |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Library General Public License as | |
7 | published by the Free Software Foundation; either version 2 of the | |
8 | License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Library General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Library General Public | |
16 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
17 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
18 | Boston, MA 02111-1307, USA. */ | |
19 | ||
4bca4c17 UD |
20 | #ifndef __BITS_SOCKET_H |
21 | #define __BITS_SOCKET_H | |
22 | ||
23 | #if !defined _SYS_SOCKET_H && !defined _NETINET_IN_H | |
f4017d20 | 24 | # error "Never include <bits/socket.h> directly; use <sys/socket.h> instead." |
5107cf1d UD |
25 | #endif |
26 | ||
df4ef2ab | 27 | #define __need_size_t |
7cc27f44 | 28 | #define __need_NULL |
df4ef2ab UD |
29 | #include <stddef.h> |
30 | ||
12b5b6b7 | 31 | #include <limits.h> |
3996f34b | 32 | #include <sys/types.h> |
df4ef2ab | 33 | |
55c14926 UD |
34 | /* Type for length arguments in socket calls. */ |
35 | typedef unsigned int socklen_t; | |
36 | ||
df4ef2ab UD |
37 | /* Types of sockets. */ |
38 | enum __socket_type | |
39 | { | |
40 | SOCK_STREAM = 1, /* Sequenced, reliable, connection-based | |
41 | byte streams. */ | |
5b826692 | 42 | #define SOCK_STREAM SOCK_STREAM |
df4ef2ab UD |
43 | SOCK_DGRAM = 2, /* Connectionless, unreliable datagrams |
44 | of fixed maximum length. */ | |
5b826692 | 45 | #define SOCK_DGRAM SOCK_DGRAM |
df4ef2ab | 46 | SOCK_RAW = 3, /* Raw protocol interface. */ |
5b826692 | 47 | #define SOCK_RAW SOCK_RAW |
df4ef2ab | 48 | SOCK_RDM = 4, /* Reliably-delivered messages. */ |
5b826692 | 49 | #define SOCK_RDM SOCK_RDM |
df4ef2ab UD |
50 | SOCK_SEQPACKET = 5, /* Sequenced, reliable, connection-based, |
51 | datagrams of fixed maximum length. */ | |
5b826692 | 52 | #define SOCK_SEQPACKET SOCK_SEQPACKET |
df4ef2ab UD |
53 | SOCK_PACKET = 10 /* Linux specific way of getting packets |
54 | at the dev level. For writing rarp and | |
55 | other similar things on the user level. */ | |
5b826692 | 56 | #define SOCK_PACKET SOCK_PACKET |
df4ef2ab UD |
57 | }; |
58 | ||
59 | /* Protocol families. */ | |
60 | #define PF_UNSPEC 0 /* Unspecified. */ | |
61 | #define PF_LOCAL 1 /* Local to host (pipes and file-domain). */ | |
62 | #define PF_UNIX PF_LOCAL /* Old BSD name for PF_LOCAL. */ | |
71bedb76 | 63 | #define PF_FILE PF_LOCAL /* Another non-standard name for PF_LOCAL. */ |
df4ef2ab UD |
64 | #define PF_INET 2 /* IP protocol family. */ |
65 | #define PF_AX25 3 /* Amateur Radio AX.25. */ | |
66 | #define PF_IPX 4 /* Novell Internet Protocol. */ | |
bc38f31f | 67 | #define PF_APPLETALK 5 /* Appletalk DDP. */ |
df4ef2ab UD |
68 | #define PF_NETROM 6 /* Amateur radio NetROM. */ |
69 | #define PF_BRIDGE 7 /* Multiprotocol bridge. */ | |
bc38f31f | 70 | #define PF_ATMPVC 8 /* ATM PVCs. */ |
df4ef2ab UD |
71 | #define PF_X25 9 /* Reserved for X.25 project. */ |
72 | #define PF_INET6 10 /* IP version 6. */ | |
31161268 UD |
73 | #define PF_ROSE 11 /* Amateur Radio X.25 PLP. */ |
74 | #define PF_DECnet 12 /* Reserved for DECnet project. */ | |
75 | #define PF_NETBEUI 13 /* Reserved for 802.2LLC project. */ | |
76 | #define PF_SECURITY 14 /* Security callback pseudo AF. */ | |
77 | #define PF_KEY 15 /* PF_KEY key management API. */ | |
61952351 | 78 | #define PF_NETLINK 16 |
31161268 UD |
79 | #define PF_ROUTE PF_NETLINK /* Alias to emulate 4.4BSD. */ |
80 | #define PF_PACKET 17 /* Packet family. */ | |
81 | #define PF_ASH 18 /* Ash. */ | |
bc38f31f UD |
82 | #define PF_ECONET 19 /* Acorn Econet. */ |
83 | #define PF_ATMSVC 20 /* ATM SVCs. */ | |
b17277cf | 84 | #define PF_SNA 22 /* Linux SNA Project */ |
c5b0e13e | 85 | #define PF_IRDA 23 /* IRDA sockets. */ |
31161268 | 86 | #define PF_MAX 32 /* For now.. */ |
df4ef2ab UD |
87 | |
88 | /* Address families. */ | |
89 | #define AF_UNSPEC PF_UNSPEC | |
90 | #define AF_LOCAL PF_LOCAL | |
91 | #define AF_UNIX PF_UNIX | |
f166d865 | 92 | #define AF_FILE PF_FILE |
df4ef2ab UD |
93 | #define AF_INET PF_INET |
94 | #define AF_AX25 PF_AX25 | |
95 | #define AF_IPX PF_IPX | |
96 | #define AF_APPLETALK PF_APPLETALK | |
97 | #define AF_NETROM PF_NETROM | |
98 | #define AF_BRIDGE PF_BRIDGE | |
bc38f31f | 99 | #define AF_ATMPVC PF_ATMPVC |
df4ef2ab UD |
100 | #define AF_X25 PF_X25 |
101 | #define AF_INET6 PF_INET6 | |
61952351 UD |
102 | #define AF_ROSE PF_ROSE |
103 | #define AF_DECnet PF_DECnet | |
104 | #define AF_NETBEUI PF_NETBEUI | |
105 | #define AF_SECURITY PF_SECURITY | |
14ea22e9 | 106 | #define pseudo_AF_KEY PF_KEY |
61952351 UD |
107 | #define AF_NETLINK PF_NETLINK |
108 | #define AF_ROUTE PF_ROUTE | |
109 | #define AF_PACKET PF_PACKET | |
7559b943 | 110 | #define AF_ASH PF_ASH |
bc38f31f UD |
111 | #define AF_ECONET PF_ECONET |
112 | #define AF_ATMSVC PF_ATMSVC | |
b17277cf | 113 | #define AF_SNA PF_SNA |
c5b0e13e | 114 | #define AF_IRDA PF_IRDA |
df4ef2ab UD |
115 | #define AF_MAX PF_MAX |
116 | ||
c57abfa7 UD |
117 | /* Socket level values. Others are defined in the appropriate headers. |
118 | ||
119 | XXX These definitions also should go into the appropriate headers as | |
120 | far as they are available. */ | |
bdf289b2 | 121 | #define SOL_RAW 255 |
81e9dad6 UD |
122 | #define SOL_DECNET 261 |
123 | #define SOL_X25 262 | |
17c7887b UD |
124 | #define SOL_PACKET 263 |
125 | #define SOL_ATM 264 /* ATM layer (cell level). */ | |
126 | #define SOL_AAL 265 /* ATM Adaption Layer (packet level). */ | |
127 | #define SOL_IRDA 266 | |
df4ef2ab UD |
128 | |
129 | /* Maximum queue length specifiable by listen. */ | |
130 | #define SOMAXCONN 128 | |
131 | ||
132 | /* Get the definition of the macro to define the common sockaddr members. */ | |
5107cf1d | 133 | #include <bits/sockaddr.h> |
df4ef2ab UD |
134 | |
135 | /* Structure describing a generic socket address. */ | |
136 | struct sockaddr | |
137 | { | |
138 | __SOCKADDR_COMMON (sa_); /* Common data: address family and length. */ | |
139 | char sa_data[14]; /* Address data. */ | |
140 | }; | |
141 | ||
142 | ||
12b5b6b7 UD |
143 | /* Structure large enough to hold any socket address (with the historical |
144 | exception of AF_UNIX). We reserve 128 bytes. */ | |
145 | #if ULONG_MAX > 0xffffffff | |
146 | # define __ss_aligntype __uint64_t | |
147 | #else | |
148 | # define __ss_aligntype __uint32_t | |
149 | #endif | |
150 | #define _SS_SIZE 128 | |
151 | #define _SS_PADSIZE (_SS_SIZE - (2 * sizeof (__ss_aligntype))) | |
152 | ||
153 | struct sockaddr_storage | |
154 | { | |
155 | __SOCKADDR_COMMON (__ss_); /* Address family, etc. */ | |
156 | __ss_aligntype __ss_align; /* Force desired alignment. */ | |
157 | char __ss_padding[_SS_PADSIZE]; | |
158 | }; | |
159 | ||
160 | ||
df4ef2ab UD |
161 | /* Bits in the FLAGS argument to `send', `recv', et al. */ |
162 | enum | |
163 | { | |
164 | MSG_OOB = 0x01, /* Process out-of-band data. */ | |
12bf4b4a | 165 | #define MSG_OOB MSG_OOB |
df4ef2ab | 166 | MSG_PEEK = 0x02, /* Peek at incoming messages. */ |
12bf4b4a | 167 | #define MSG_PEEK MSG_PEEK |
df4ef2ab | 168 | MSG_DONTROUTE = 0x04, /* Don't use local routing. */ |
12bf4b4a | 169 | #define MSG_DONTROUTE MSG_DONTROUTE |
c5b0e13e UD |
170 | #ifdef __USE_GNU |
171 | /* DECnet uses a different name. */ | |
172 | MSG_TRYHARD = MSG_DONTROUTE, | |
173 | # define MSG_TRYHARD MSG_DONTROUTE | |
174 | #endif | |
df4ef2ab | 175 | MSG_CTRUNC = 0x08, /* Control data lost before delivery. */ |
12bf4b4a | 176 | #define MSG_CTRUNC MSG_CTRUNC |
fc370352 | 177 | MSG_PROXY = 0x10, /* Supply or ask second address. */ |
12bf4b4a | 178 | #define MSG_PROXY MSG_PROXY |
fc370352 UD |
179 | MSG_TRUNC = 0x20, |
180 | #define MSG_TRUNC MSG_TRUNC | |
181 | MSG_DONTWAIT = 0x40, /* Nonblocking IO. */ | |
7aa6d208 | 182 | #define MSG_DONTWAIT MSG_DONTWAIT |
fc370352 UD |
183 | MSG_EOR = 0x80, /* End of record. */ |
184 | #define MSG_EOR MSG_EOR | |
185 | MSG_WAITALL = 0x100, /* Wait for a full request. */ | |
186 | #define MSG_WAITALL MSG_WAITALL | |
187 | MSG_FIN = 0x200, | |
188 | #define MSG_FIN MSG_FIN | |
189 | MSG_SYN = 0x400, | |
190 | #define MSG_SYN MSG_SYN | |
191 | MSG_URG = 0x800, | |
192 | #define MSG_URG MSG_URG | |
193 | MSG_RST = 0x1000, | |
194 | #define MSG_RST MSG_RST | |
195 | MSG_ERRQUEUE = 0x2000, | |
196 | #define MSG_ERRQUEUE MSG_ERRQUEUE | |
197 | MSG_NOSIGNAL = 0x4000 | |
198 | #define MSG_NOSIGNAL MSG_NOSIGNAL | |
df4ef2ab UD |
199 | }; |
200 | ||
201 | ||
202 | /* Structure describing messages sent by | |
203 | `sendmsg' and received by `recvmsg'. */ | |
204 | struct msghdr | |
205 | { | |
206 | __ptr_t msg_name; /* Address to send to/receive from. */ | |
55c14926 | 207 | socklen_t msg_namelen; /* Length of address data. */ |
df4ef2ab UD |
208 | |
209 | struct iovec *msg_iov; /* Vector of data to send/receive into. */ | |
af6f3906 | 210 | size_t msg_iovlen; /* Number of elements in the vector. */ |
df4ef2ab UD |
211 | |
212 | __ptr_t msg_control; /* Ancillary data (eg BSD filedesc passing). */ | |
af6f3906 | 213 | size_t msg_controllen; /* Ancillary data buffer length. */ |
55c14926 | 214 | |
df4ef2ab UD |
215 | int msg_flags; /* Flags on received message. */ |
216 | }; | |
217 | ||
c0e45674 UD |
218 | /* Structure used for storage of ancillary data object information. */ |
219 | struct cmsghdr | |
220 | { | |
af6f3906 | 221 | size_t cmsg_len; /* Length of data in cmsg_data plus length |
c0e45674 | 222 | of cmsghdr structure. */ |
c0e45674 UD |
223 | int cmsg_level; /* Originating protocol. */ |
224 | int cmsg_type; /* Protocol specific type. */ | |
7cc27f44 | 225 | #if !defined __STRICT_ANSI__ && defined __GNUC__ && __GNUC__ >= 2 |
c0e45674 | 226 | unsigned char __cmsg_data[0]; /* Ancillary data. */ |
3996f34b | 227 | /* XXX Perhaps this should be removed. */ |
7cc27f44 | 228 | #endif |
c0e45674 UD |
229 | }; |
230 | ||
231 | /* Ancillary data object manipulation macros. */ | |
7cc27f44 UD |
232 | #if !defined __STRICT_ANSI__ && defined __GNUC__ && __GNUC__ >= 2 |
233 | # define CMSG_DATA(cmsg) ((cmsg)->__cmsg_data) | |
234 | #else | |
235 | # define CMSG_DATA(cmsg) ((unsigned char *) ((struct cmsghdr *) (cmsg) + 1)) | |
236 | #endif | |
c0e45674 | 237 | #define CMSG_NXTHDR(mhdr, cmsg) __cmsg_nxthdr (mhdr, cmsg) |
7cc27f44 | 238 | #define CMSG_FIRSTHDR(mhdr) \ |
bfbc5754 | 239 | ((size_t) (mhdr)->msg_controllen >= sizeof (struct cmsghdr) \ |
c0e45674 | 240 | ? (struct cmsghdr *) (mhdr)->msg_control : (struct cmsghdr *) NULL) |
bfbc5754 UD |
241 | #define CMSG_ALIGN(len) (((len) + sizeof (size_t) - 1) \ |
242 | & ~(sizeof (size_t) - 1)) | |
243 | #define CMSG_SPACE(len) (CMSG_ALIGN (len) \ | |
244 | + CMSG_ALIGN (sizeof (struct cmsghdr))) | |
245 | #define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len)) | |
c0e45674 | 246 | |
c0e45674 UD |
247 | extern struct cmsghdr *__cmsg_nxthdr __P ((struct msghdr *__mhdr, |
248 | struct cmsghdr *__cmsg)); | |
dfd2464b UD |
249 | #ifdef __USE_EXTERN_INLINES |
250 | # ifndef _EXTERN_INLINE | |
251 | # define _EXTERN_INLINE extern __inline | |
252 | # endif | |
c0e45674 | 253 | _EXTERN_INLINE struct cmsghdr * |
99e46354 | 254 | __cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg) __THROW |
c0e45674 | 255 | { |
c0e45674 UD |
256 | if ((size_t) __cmsg->cmsg_len < sizeof (struct cmsghdr)) |
257 | /* The kernel header does this so there may be a reason. */ | |
2e65ca2b | 258 | return 0; |
c0e45674 | 259 | |
6ff5bc68 UD |
260 | __cmsg = (struct cmsghdr *) ((unsigned char *) __cmsg |
261 | + CMSG_ALIGN (__cmsg->cmsg_len)); | |
262 | if ((unsigned char *) (__cmsg + 1) >= ((unsigned char *) __mhdr->msg_control | |
263 | + __mhdr->msg_controllen) | |
264 | || ((unsigned char *) __cmsg + CMSG_ALIGN (__cmsg->cmsg_len) | |
265 | >= ((unsigned char *) __mhdr->msg_control + __mhdr->msg_controllen))) | |
c0e45674 | 266 | /* No more entries. */ |
2e65ca2b | 267 | return 0; |
6ff5bc68 | 268 | return __cmsg; |
c0e45674 | 269 | } |
dfd2464b | 270 | #endif /* Use `extern inline'. */ |
c0e45674 | 271 | |
af6f3906 UD |
272 | /* Socket level message types. This must match the definitions in |
273 | <linux/socket.h>. */ | |
274 | enum | |
275 | { | |
ba9234d9 | 276 | SCM_RIGHTS = 0x01, /* Transfer file descriptors. */ |
af6f3906 | 277 | #define SCM_RIGHTS SCM_RIGHTS |
ba9234d9 | 278 | #ifdef __USE_BSD |
7ce241a0 UD |
279 | SCM_CREDENTIALS = 0x02, /* Credentials passing. */ |
280 | # define SCM_CREDENTIALS SCM_CREDENTIALS | |
ba9234d9 | 281 | #endif |
a5d1d726 | 282 | __SCM_CONNECT = 0x03 /* Data array is `struct scm_connect'. */ |
af6f3906 UD |
283 | }; |
284 | ||
7ce241a0 | 285 | /* User visible structure for SCM_CREDENTIALS message */ |
ba9234d9 | 286 | |
7ce241a0 | 287 | struct ucred |
ba9234d9 | 288 | { |
7ce241a0 UD |
289 | pid_t pid; /* PID of sending process. */ |
290 | uid_t uid; /* UID of sending process. */ | |
291 | gid_t gid; /* GID of sending process. */ | |
ba9234d9 | 292 | }; |
df4ef2ab UD |
293 | |
294 | /* Get socket manipulation related informations from kernel headers. */ | |
295 | #include <asm/socket.h> | |
296 | ||
297 | ||
298 | /* Structure used to manipulate the SO_LINGER option. */ | |
299 | struct linger | |
300 | { | |
301 | int l_onoff; /* Nonzero to linger on close. */ | |
302 | int l_linger; /* Time to linger. */ | |
303 | }; | |
4bca4c17 UD |
304 | |
305 | #endif /* bits/socket.h */ |