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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 | #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 | typedef unsigned short sa_family_t; |
38 | |
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 | #define MSG_WAITFORONE 0x10000 /* recvmmsg(): block until 1+ packets avail */ |
259 | |
260 | #define MSG_EOF MSG_FIN |
261 | |
262 | #define MSG_CMSG_CLOEXEC 0x40000000 /* Set close_on_exit for file |
263 | descriptor received through |
264 | SCM_RIGHTS */ |
265 | #if defined(CONFIG_COMPAT) |
266 | #define MSG_CMSG_COMPAT 0x80000000 /* This message needs 32 bit fixups */ |
267 | #else |
268 | #define MSG_CMSG_COMPAT 0 /* We never have 32 bit fixups */ |
269 | #endif |
270 | |
271 | |
272 | /* Setsockoptions(2) level. Thanks to BSD these must match IPPROTO_xxx */ |
273 | #define SOL_IP 0 |
274 | /* #define SOL_ICMP 1 No-no-no! Due to Linux :-) we cannot use SOL_ICMP=1 */ |
275 | #define SOL_TCP 6 |
276 | #define SOL_UDP 17 |
277 | #define SOL_IPV6 41 |
278 | #define SOL_ICMPV6 58 |
279 | #define SOL_SCTP 132 |
280 | #define SOL_UDPLITE 136 /* UDP-Lite (RFC 3828) */ |
281 | #define SOL_RAW 255 |
282 | #define SOL_IPX 256 |
283 | #define SOL_AX25 257 |
284 | #define SOL_ATALK 258 |
285 | #define SOL_NETROM 259 |
286 | #define SOL_ROSE 260 |
287 | #define SOL_DECNET 261 |
288 | #define SOL_X25 262 |
289 | #define SOL_PACKET 263 |
290 | #define SOL_ATM 264 /* ATM layer (cell level) */ |
291 | #define SOL_AAL 265 /* ATM Adaption Layer (packet level) */ |
292 | #define SOL_IRDA 266 |
293 | #define SOL_NETBEUI 267 |
294 | #define SOL_LLC 268 |
295 | #define SOL_DCCP 269 |
296 | #define SOL_NETLINK 270 |
297 | #define SOL_TIPC 271 |
298 | #define SOL_RXRPC 272 |
299 | #define SOL_PPPOL2TP 273 |
300 | #define SOL_BLUETOOTH 274 |
301 | #define SOL_PNPIPE 275 |
302 | #define SOL_RDS 276 |
303 | #define SOL_IUCV 277 |
304 | |
305 | /* IPX options */ |
306 | #define IPX_TYPE 1 |
307 | |
308 | #ifdef __KERNEL__ |
309 | extern int memcpy_fromiovec(unsigned char *kdata, struct iovec *iov, int len); |
310 | extern int memcpy_fromiovecend(unsigned char *kdata, const struct iovec *iov, |
311 | int offset, int len); |
312 | extern int csum_partial_copy_fromiovecend(unsigned char *kdata, |
313 | struct iovec *iov, |
314 | int offset, |
315 | unsigned int len, __wsum *csump); |
316 | |
317 | extern int verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr *address, int mode); |
318 | extern int memcpy_toiovec(struct iovec *v, unsigned char *kdata, int len); |
319 | extern int memcpy_toiovecend(const struct iovec *v, unsigned char *kdata, |
320 | int offset, int len); |
321 | extern int move_addr_to_user(struct sockaddr *kaddr, int klen, void __user *uaddr, int __user *ulen); |
322 | extern int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr *kaddr); |
323 | extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data); |
324 | |
325 | struct timespec; |
326 | |
327 | extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, |
328 | unsigned int flags, struct timespec *timeout); |
329 | #endif |
330 | #endif /* not kernel and not glibc */ |
331 | #endif /* _LINUX_SOCKET_H */ |
332 |
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