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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 | ||
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 | ||
20380731 | 29 | extern int sysctl_somaxconn; |
20380731 ACM |
30 | #ifdef CONFIG_PROC_FS |
31 | struct seq_file; | |
32 | extern void socket_seq_show(struct seq_file *seq); | |
33 | #endif | |
34 | ||
1da177e4 LT |
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 | ||
154 | struct ucred { | |
155 | __u32 pid; | |
156 | __u32 uid; | |
157 | __u32 gid; | |
158 | }; | |
159 | ||
160 | /* Supported address families. */ | |
161 | #define AF_UNSPEC 0 | |
162 | #define AF_UNIX 1 /* Unix domain sockets */ | |
163 | #define AF_LOCAL 1 /* POSIX name for AF_UNIX */ | |
164 | #define AF_INET 2 /* Internet IP Protocol */ | |
165 | #define AF_AX25 3 /* Amateur Radio AX.25 */ | |
166 | #define AF_IPX 4 /* Novell IPX */ | |
167 | #define AF_APPLETALK 5 /* AppleTalk DDP */ | |
168 | #define AF_NETROM 6 /* Amateur Radio NET/ROM */ | |
169 | #define AF_BRIDGE 7 /* Multiprotocol bridge */ | |
170 | #define AF_ATMPVC 8 /* ATM PVCs */ | |
171 | #define AF_X25 9 /* Reserved for X.25 project */ | |
172 | #define AF_INET6 10 /* IP version 6 */ | |
173 | #define AF_ROSE 11 /* Amateur Radio X.25 PLP */ | |
174 | #define AF_DECnet 12 /* Reserved for DECnet project */ | |
175 | #define AF_NETBEUI 13 /* Reserved for 802.2LLC project*/ | |
176 | #define AF_SECURITY 14 /* Security callback pseudo AF */ | |
177 | #define AF_KEY 15 /* PF_KEY key management API */ | |
178 | #define AF_NETLINK 16 | |
179 | #define AF_ROUTE AF_NETLINK /* Alias to emulate 4.4BSD */ | |
180 | #define AF_PACKET 17 /* Packet family */ | |
181 | #define AF_ASH 18 /* Ash */ | |
182 | #define AF_ECONET 19 /* Acorn Econet */ | |
183 | #define AF_ATMSVC 20 /* ATM SVCs */ | |
184 | #define AF_SNA 22 /* Linux SNA Project (nutters!) */ | |
185 | #define AF_IRDA 23 /* IRDA sockets */ | |
186 | #define AF_PPPOX 24 /* PPPoX sockets */ | |
187 | #define AF_WANPIPE 25 /* Wanpipe API Sockets */ | |
188 | #define AF_LLC 26 /* Linux LLC */ | |
b97bf3fd | 189 | #define AF_TIPC 30 /* TIPC sockets */ |
1da177e4 LT |
190 | #define AF_BLUETOOTH 31 /* Bluetooth sockets */ |
191 | #define AF_MAX 32 /* For now.. */ | |
192 | ||
193 | /* Protocol families, same as address families. */ | |
194 | #define PF_UNSPEC AF_UNSPEC | |
195 | #define PF_UNIX AF_UNIX | |
196 | #define PF_LOCAL AF_LOCAL | |
197 | #define PF_INET AF_INET | |
198 | #define PF_AX25 AF_AX25 | |
199 | #define PF_IPX AF_IPX | |
200 | #define PF_APPLETALK AF_APPLETALK | |
201 | #define PF_NETROM AF_NETROM | |
202 | #define PF_BRIDGE AF_BRIDGE | |
203 | #define PF_ATMPVC AF_ATMPVC | |
204 | #define PF_X25 AF_X25 | |
205 | #define PF_INET6 AF_INET6 | |
206 | #define PF_ROSE AF_ROSE | |
207 | #define PF_DECnet AF_DECnet | |
208 | #define PF_NETBEUI AF_NETBEUI | |
209 | #define PF_SECURITY AF_SECURITY | |
210 | #define PF_KEY AF_KEY | |
211 | #define PF_NETLINK AF_NETLINK | |
212 | #define PF_ROUTE AF_ROUTE | |
213 | #define PF_PACKET AF_PACKET | |
214 | #define PF_ASH AF_ASH | |
215 | #define PF_ECONET AF_ECONET | |
216 | #define PF_ATMSVC AF_ATMSVC | |
217 | #define PF_SNA AF_SNA | |
218 | #define PF_IRDA AF_IRDA | |
219 | #define PF_PPPOX AF_PPPOX | |
220 | #define PF_WANPIPE AF_WANPIPE | |
221 | #define PF_LLC AF_LLC | |
b97bf3fd | 222 | #define PF_TIPC AF_TIPC |
1da177e4 LT |
223 | #define PF_BLUETOOTH AF_BLUETOOTH |
224 | #define PF_MAX AF_MAX | |
225 | ||
226 | /* Maximum queue length specifiable by listen. */ | |
227 | #define SOMAXCONN 128 | |
228 | ||
229 | /* Flags we can use with send/ and recv. | |
230 | Added those for 1003.1g not all are supported yet | |
231 | */ | |
232 | ||
233 | #define MSG_OOB 1 | |
234 | #define MSG_PEEK 2 | |
235 | #define MSG_DONTROUTE 4 | |
236 | #define MSG_TRYHARD 4 /* Synonym for MSG_DONTROUTE for DECnet */ | |
237 | #define MSG_CTRUNC 8 | |
238 | #define MSG_PROBE 0x10 /* Do not send. Only probe path f.e. for MTU */ | |
239 | #define MSG_TRUNC 0x20 | |
240 | #define MSG_DONTWAIT 0x40 /* Nonblocking io */ | |
241 | #define MSG_EOR 0x80 /* End of record */ | |
242 | #define MSG_WAITALL 0x100 /* Wait for a full request */ | |
243 | #define MSG_FIN 0x200 | |
244 | #define MSG_SYN 0x400 | |
245 | #define MSG_CONFIRM 0x800 /* Confirm path validity */ | |
246 | #define MSG_RST 0x1000 | |
247 | #define MSG_ERRQUEUE 0x2000 /* Fetch message from error queue */ | |
248 | #define MSG_NOSIGNAL 0x4000 /* Do not generate SIGPIPE */ | |
249 | #define MSG_MORE 0x8000 /* Sender will send more */ | |
250 | ||
251 | #define MSG_EOF MSG_FIN | |
252 | ||
253 | #if defined(CONFIG_COMPAT) | |
254 | #define MSG_CMSG_COMPAT 0x80000000 /* This message needs 32 bit fixups */ | |
255 | #else | |
256 | #define MSG_CMSG_COMPAT 0 /* We never have 32 bit fixups */ | |
257 | #endif | |
258 | ||
259 | ||
260 | /* Setsockoptions(2) level. Thanks to BSD these must match IPPROTO_xxx */ | |
261 | #define SOL_IP 0 | |
262 | /* #define SOL_ICMP 1 No-no-no! Due to Linux :-) we cannot use SOL_ICMP=1 */ | |
263 | #define SOL_TCP 6 | |
264 | #define SOL_UDP 17 | |
265 | #define SOL_IPV6 41 | |
266 | #define SOL_ICMPV6 58 | |
267 | #define SOL_SCTP 132 | |
268 | #define SOL_RAW 255 | |
269 | #define SOL_IPX 256 | |
270 | #define SOL_AX25 257 | |
271 | #define SOL_ATALK 258 | |
272 | #define SOL_NETROM 259 | |
273 | #define SOL_ROSE 260 | |
274 | #define SOL_DECNET 261 | |
275 | #define SOL_X25 262 | |
276 | #define SOL_PACKET 263 | |
277 | #define SOL_ATM 264 /* ATM layer (cell level) */ | |
278 | #define SOL_AAL 265 /* ATM Adaption Layer (packet level) */ | |
279 | #define SOL_IRDA 266 | |
280 | #define SOL_NETBEUI 267 | |
281 | #define SOL_LLC 268 | |
7c657876 | 282 | #define SOL_DCCP 269 |
9a4595bc | 283 | #define SOL_NETLINK 270 |
b97bf3fd | 284 | #define SOL_TIPC 271 |
1da177e4 LT |
285 | |
286 | /* IPX options */ | |
287 | #define IPX_TYPE 1 | |
288 | ||
289 | #ifdef __KERNEL__ | |
290 | extern int memcpy_fromiovec(unsigned char *kdata, struct iovec *iov, int len); | |
291 | extern int memcpy_fromiovecend(unsigned char *kdata, struct iovec *iov, | |
292 | int offset, int len); | |
293 | extern int csum_partial_copy_fromiovecend(unsigned char *kdata, | |
294 | struct iovec *iov, | |
295 | int offset, | |
296 | unsigned int len, int *csump); | |
297 | ||
298 | extern int verify_iovec(struct msghdr *m, struct iovec *iov, char *address, int mode); | |
299 | extern int memcpy_toiovec(struct iovec *v, unsigned char *kdata, int len); | |
300 | extern int move_addr_to_user(void *kaddr, int klen, void __user *uaddr, int __user *ulen); | |
301 | extern int move_addr_to_kernel(void __user *uaddr, int ulen, void *kaddr); | |
302 | extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data); | |
303 | ||
304 | #endif | |
305 | #endif /* not kernel and not glibc */ | |
306 | #endif /* _LINUX_SOCKET_H */ |