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1 | #ifndef _LINUX_SOCKET_H |
2 | #define _LINUX_SOCKET_H |
3 | |
4 | |
5 | #include <asm/socket.h> /* arch-dependent defines */ |
6 | #include <linux/sockios.h> /* the SIOCxxx I/O controls */ |
7 | #include <linux/uio.h> /* iovec support */ |
8 | #include <linux/types.h> /* pid_t */ |
9 | #include <linux/compiler.h> /* __user */ |
10 | #include <uapi/linux/socket.h> |
11 | |
12 | struct pid; |
13 | struct cred; |
14 | |
15 | #define __sockaddr_check_size(size) \ |
16 | BUILD_BUG_ON(((size) > sizeof(struct __kernel_sockaddr_storage))) |
17 | |
18 | #ifdef CONFIG_PROC_FS |
19 | struct seq_file; |
20 | extern void socket_seq_show(struct seq_file *seq); |
21 | #endif |
22 | |
23 | typedef __kernel_sa_family_t sa_family_t; |
24 | |
25 | /* |
26 | * 1003.1g requires sa_family_t and that sa_data is char. |
27 | */ |
28 | |
29 | struct sockaddr { |
30 | sa_family_t sa_family; /* address family, AF_xxx */ |
31 | char sa_data[14]; /* 14 bytes of protocol address */ |
32 | }; |
33 | |
34 | struct linger { |
35 | int l_onoff; /* Linger active */ |
36 | int l_linger; /* How long to linger for */ |
37 | }; |
38 | |
39 | #define sockaddr_storage __kernel_sockaddr_storage |
40 | |
41 | /* |
42 | * As we do 4.4BSD message passing we use a 4.4BSD message passing |
43 | * system, not 4.3. Thus msg_accrights(len) are now missing. They |
44 | * belong in an obscure libc emulation or the bin. |
45 | */ |
46 | |
47 | struct msghdr { |
48 | void * msg_name; /* Socket name */ |
49 | int msg_namelen; /* Length of name */ |
50 | struct iovec * msg_iov; /* Data blocks */ |
51 | __kernel_size_t msg_iovlen; /* Number of blocks */ |
52 | void * msg_control; /* Per protocol magic (eg BSD file descriptor passing) */ |
53 | __kernel_size_t msg_controllen; /* Length of cmsg list */ |
54 | unsigned int msg_flags; |
55 | }; |
56 | |
57 | /* For recvmmsg/sendmmsg */ |
58 | struct mmsghdr { |
59 | struct msghdr msg_hdr; |
60 | unsigned int msg_len; |
61 | }; |
62 | |
63 | /* |
64 | * POSIX 1003.1g - ancillary data object information |
65 | * Ancillary data consits of a sequence of pairs of |
66 | * (cmsghdr, cmsg_data[]) |
67 | */ |
68 | |
69 | struct cmsghdr { |
70 | __kernel_size_t cmsg_len; /* data byte count, including hdr */ |
71 | int cmsg_level; /* originating protocol */ |
72 | int cmsg_type; /* protocol-specific type */ |
73 | }; |
74 | |
75 | /* |
76 | * Ancillary data object information MACROS |
77 | * Table 5-14 of POSIX 1003.1g |
78 | */ |
79 | |
80 | #define __CMSG_NXTHDR(ctl, len, cmsg) __cmsg_nxthdr((ctl),(len),(cmsg)) |
81 | #define CMSG_NXTHDR(mhdr, cmsg) cmsg_nxthdr((mhdr), (cmsg)) |
82 | |
83 | #define CMSG_ALIGN(len) ( ((len)+sizeof(long)-1) & ~(sizeof(long)-1) ) |
84 | |
85 | #define CMSG_DATA(cmsg) ((void *)((char *)(cmsg) + CMSG_ALIGN(sizeof(struct cmsghdr)))) |
86 | #define CMSG_SPACE(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + CMSG_ALIGN(len)) |
87 | #define CMSG_LEN(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + (len)) |
88 | |
89 | #define __CMSG_FIRSTHDR(ctl,len) ((len) >= sizeof(struct cmsghdr) ? \ |
90 | (struct cmsghdr *)(ctl) : \ |
91 | (struct cmsghdr *)NULL) |
92 | #define CMSG_FIRSTHDR(msg) __CMSG_FIRSTHDR((msg)->msg_control, (msg)->msg_controllen) |
93 | #define CMSG_OK(mhdr, cmsg) ((cmsg)->cmsg_len >= sizeof(struct cmsghdr) && \ |
94 | (cmsg)->cmsg_len <= (unsigned long) \ |
95 | ((mhdr)->msg_controllen - \ |
96 | ((char *)(cmsg) - (char *)(mhdr)->msg_control))) |
97 | |
98 | /* |
99 | * Get the next cmsg header |
100 | * |
101 | * PLEASE, do not touch this function. If you think, that it is |
102 | * incorrect, grep kernel sources and think about consequences |
103 | * before trying to improve it. |
104 | * |
105 | * Now it always returns valid, not truncated ancillary object |
106 | * HEADER. But caller still MUST check, that cmsg->cmsg_len is |
107 | * inside range, given by msg->msg_controllen before using |
108 | * ancillary object DATA. --ANK (980731) |
109 | */ |
110 | |
111 | static inline struct cmsghdr * __cmsg_nxthdr(void *__ctl, __kernel_size_t __size, |
112 | struct cmsghdr *__cmsg) |
113 | { |
114 | struct cmsghdr * __ptr; |
115 | |
116 | __ptr = (struct cmsghdr*)(((unsigned char *) __cmsg) + CMSG_ALIGN(__cmsg->cmsg_len)); |
117 | if ((unsigned long)((char*)(__ptr+1) - (char *) __ctl) > __size) |
118 | return (struct cmsghdr *)0; |
119 | |
120 | return __ptr; |
121 | } |
122 | |
123 | static inline struct cmsghdr * cmsg_nxthdr (struct msghdr *__msg, struct cmsghdr *__cmsg) |
124 | { |
125 | return __cmsg_nxthdr(__msg->msg_control, __msg->msg_controllen, __cmsg); |
126 | } |
127 | |
128 | /* "Socket"-level control message types: */ |
129 | |
130 | #define SCM_RIGHTS 0x01 /* rw: access rights (array of int) */ |
131 | #define SCM_CREDENTIALS 0x02 /* rw: struct ucred */ |
132 | #define SCM_SECURITY 0x03 /* rw: security label */ |
133 | |
134 | struct ucred { |
135 | __u32 pid; |
136 | __u32 uid; |
137 | __u32 gid; |
138 | }; |
139 | |
140 | /* Supported address families. */ |
141 | #define AF_UNSPEC 0 |
142 | #define AF_UNIX 1 /* Unix domain sockets */ |
143 | #define AF_LOCAL 1 /* POSIX name for AF_UNIX */ |
144 | #define AF_INET 2 /* Internet IP Protocol */ |
145 | #define AF_AX25 3 /* Amateur Radio AX.25 */ |
146 | #define AF_IPX 4 /* Novell IPX */ |
147 | #define AF_APPLETALK 5 /* AppleTalk DDP */ |
148 | #define AF_NETROM 6 /* Amateur Radio NET/ROM */ |
149 | #define AF_BRIDGE 7 /* Multiprotocol bridge */ |
150 | #define AF_ATMPVC 8 /* ATM PVCs */ |
151 | #define AF_X25 9 /* Reserved for X.25 project */ |
152 | #define AF_INET6 10 /* IP version 6 */ |
153 | #define AF_ROSE 11 /* Amateur Radio X.25 PLP */ |
154 | #define AF_DECnet 12 /* Reserved for DECnet project */ |
155 | #define AF_NETBEUI 13 /* Reserved for 802.2LLC project*/ |
156 | #define AF_SECURITY 14 /* Security callback pseudo AF */ |
157 | #define AF_KEY 15 /* PF_KEY key management API */ |
158 | #define AF_NETLINK 16 |
159 | #define AF_ROUTE AF_NETLINK /* Alias to emulate 4.4BSD */ |
160 | #define AF_PACKET 17 /* Packet family */ |
161 | #define AF_ASH 18 /* Ash */ |
162 | #define AF_ECONET 19 /* Acorn Econet */ |
163 | #define AF_ATMSVC 20 /* ATM SVCs */ |
164 | #define AF_RDS 21 /* RDS sockets */ |
165 | #define AF_SNA 22 /* Linux SNA Project (nutters!) */ |
166 | #define AF_IRDA 23 /* IRDA sockets */ |
167 | #define AF_PPPOX 24 /* PPPoX sockets */ |
168 | #define AF_WANPIPE 25 /* Wanpipe API Sockets */ |
169 | #define AF_LLC 26 /* Linux LLC */ |
170 | #define AF_CAN 29 /* Controller Area Network */ |
171 | #define AF_TIPC 30 /* TIPC sockets */ |
172 | #define AF_BLUETOOTH 31 /* Bluetooth sockets */ |
173 | #define AF_IUCV 32 /* IUCV sockets */ |
174 | #define AF_RXRPC 33 /* RxRPC sockets */ |
175 | #define AF_ISDN 34 /* mISDN sockets */ |
176 | #define AF_PHONET 35 /* Phonet sockets */ |
177 | #define AF_IEEE802154 36 /* IEEE802154 sockets */ |
178 | #define AF_CAIF 37 /* CAIF sockets */ |
179 | #define AF_ALG 38 /* Algorithm sockets */ |
180 | #define AF_NFC 39 /* NFC sockets */ |
181 | #define AF_VSOCK 40 /* vSockets */ |
182 | #define AF_MAX 41 /* For now.. */ |
183 | |
184 | /* Protocol families, same as address families. */ |
185 | #define PF_UNSPEC AF_UNSPEC |
186 | #define PF_UNIX AF_UNIX |
187 | #define PF_LOCAL AF_LOCAL |
188 | #define PF_INET AF_INET |
189 | #define PF_AX25 AF_AX25 |
190 | #define PF_IPX AF_IPX |
191 | #define PF_APPLETALK AF_APPLETALK |
192 | #define PF_NETROM AF_NETROM |
193 | #define PF_BRIDGE AF_BRIDGE |
194 | #define PF_ATMPVC AF_ATMPVC |
195 | #define PF_X25 AF_X25 |
196 | #define PF_INET6 AF_INET6 |
197 | #define PF_ROSE AF_ROSE |
198 | #define PF_DECnet AF_DECnet |
199 | #define PF_NETBEUI AF_NETBEUI |
200 | #define PF_SECURITY AF_SECURITY |
201 | #define PF_KEY AF_KEY |
202 | #define PF_NETLINK AF_NETLINK |
203 | #define PF_ROUTE AF_ROUTE |
204 | #define PF_PACKET AF_PACKET |
205 | #define PF_ASH AF_ASH |
206 | #define PF_ECONET AF_ECONET |
207 | #define PF_ATMSVC AF_ATMSVC |
208 | #define PF_RDS AF_RDS |
209 | #define PF_SNA AF_SNA |
210 | #define PF_IRDA AF_IRDA |
211 | #define PF_PPPOX AF_PPPOX |
212 | #define PF_WANPIPE AF_WANPIPE |
213 | #define PF_LLC AF_LLC |
214 | #define PF_CAN AF_CAN |
215 | #define PF_TIPC AF_TIPC |
216 | #define PF_BLUETOOTH AF_BLUETOOTH |
217 | #define PF_IUCV AF_IUCV |
218 | #define PF_RXRPC AF_RXRPC |
219 | #define PF_ISDN AF_ISDN |
220 | #define PF_PHONET AF_PHONET |
221 | #define PF_IEEE802154 AF_IEEE802154 |
222 | #define PF_CAIF AF_CAIF |
223 | #define PF_ALG AF_ALG |
224 | #define PF_NFC AF_NFC |
225 | #define PF_VSOCK AF_VSOCK |
226 | #define PF_MAX AF_MAX |
227 | |
228 | /* Maximum queue length specifiable by listen. */ |
229 | #define SOMAXCONN 128 |
230 | |
231 | /* Flags we can use with send/ and recv. |
232 | Added those for 1003.1g not all are supported yet |
233 | */ |
234 | |
235 | #define MSG_OOB 1 |
236 | #define MSG_PEEK 2 |
237 | #define MSG_DONTROUTE 4 |
238 | #define MSG_TRYHARD 4 /* Synonym for MSG_DONTROUTE for DECnet */ |
239 | #define MSG_CTRUNC 8 |
240 | #define MSG_PROBE 0x10 /* Do not send. Only probe path f.e. for MTU */ |
241 | #define MSG_TRUNC 0x20 |
242 | #define MSG_DONTWAIT 0x40 /* Nonblocking io */ |
243 | #define MSG_EOR 0x80 /* End of record */ |
244 | #define MSG_WAITALL 0x100 /* Wait for a full request */ |
245 | #define MSG_FIN 0x200 |
246 | #define MSG_SYN 0x400 |
247 | #define MSG_CONFIRM 0x800 /* Confirm path validity */ |
248 | #define MSG_RST 0x1000 |
249 | #define MSG_ERRQUEUE 0x2000 /* Fetch message from error queue */ |
250 | #define MSG_NOSIGNAL 0x4000 /* Do not generate SIGPIPE */ |
251 | #define MSG_MORE 0x8000 /* Sender will send more */ |
252 | #define MSG_WAITFORONE 0x10000 /* recvmmsg(): block until 1+ packets avail */ |
253 | #define MSG_SENDPAGE_NOTLAST 0x20000 /* sendpage() internal : not the last page */ |
254 | #define MSG_EOF MSG_FIN |
255 | |
256 | #define MSG_FASTOPEN 0x20000000 /* Send data in TCP SYN */ |
257 | #define MSG_CMSG_CLOEXEC 0x40000000 /* Set close_on_exit for file |
258 | descriptor received through |
259 | SCM_RIGHTS */ |
260 | #if defined(CONFIG_COMPAT) |
261 | #define MSG_CMSG_COMPAT 0x80000000 /* This message needs 32 bit fixups */ |
262 | #else |
263 | #define MSG_CMSG_COMPAT 0 /* We never have 32 bit fixups */ |
264 | #endif |
265 | |
266 | |
267 | /* Setsockoptions(2) level. Thanks to BSD these must match IPPROTO_xxx */ |
268 | #define SOL_IP 0 |
269 | /* #define SOL_ICMP 1 No-no-no! Due to Linux :-) we cannot use SOL_ICMP=1 */ |
270 | #define SOL_TCP 6 |
271 | #define SOL_UDP 17 |
272 | #define SOL_IPV6 41 |
273 | #define SOL_ICMPV6 58 |
274 | #define SOL_SCTP 132 |
275 | #define SOL_UDPLITE 136 /* UDP-Lite (RFC 3828) */ |
276 | #define SOL_RAW 255 |
277 | #define SOL_IPX 256 |
278 | #define SOL_AX25 257 |
279 | #define SOL_ATALK 258 |
280 | #define SOL_NETROM 259 |
281 | #define SOL_ROSE 260 |
282 | #define SOL_DECNET 261 |
283 | #define SOL_X25 262 |
284 | #define SOL_PACKET 263 |
285 | #define SOL_ATM 264 /* ATM layer (cell level) */ |
286 | #define SOL_AAL 265 /* ATM Adaption Layer (packet level) */ |
287 | #define SOL_IRDA 266 |
288 | #define SOL_NETBEUI 267 |
289 | #define SOL_LLC 268 |
290 | #define SOL_DCCP 269 |
291 | #define SOL_NETLINK 270 |
292 | #define SOL_TIPC 271 |
293 | #define SOL_RXRPC 272 |
294 | #define SOL_PPPOL2TP 273 |
295 | #define SOL_BLUETOOTH 274 |
296 | #define SOL_PNPIPE 275 |
297 | #define SOL_RDS 276 |
298 | #define SOL_IUCV 277 |
299 | #define SOL_CAIF 278 |
300 | #define SOL_ALG 279 |
301 | |
302 | /* IPX options */ |
303 | #define IPX_TYPE 1 |
304 | |
305 | extern void cred_to_ucred(struct pid *pid, const struct cred *cred, struct ucred *ucred); |
306 | |
307 | extern int memcpy_fromiovec(unsigned char *kdata, struct iovec *iov, int len); |
308 | extern int memcpy_fromiovecend(unsigned char *kdata, const struct iovec *iov, |
309 | int offset, int len); |
310 | extern int csum_partial_copy_fromiovecend(unsigned char *kdata, |
311 | struct iovec *iov, |
312 | int offset, |
313 | unsigned int len, __wsum *csump); |
314 | |
315 | extern int verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr_storage *address, int mode); |
316 | extern int memcpy_toiovec(struct iovec *v, unsigned char *kdata, int len); |
317 | extern int memcpy_toiovecend(const struct iovec *v, unsigned char *kdata, |
318 | int offset, int len); |
319 | extern int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr_storage *kaddr); |
320 | extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data); |
321 | |
322 | struct timespec; |
323 | |
324 | extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, |
325 | unsigned int flags, struct timespec *timeout); |
326 | extern int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg, |
327 | unsigned int vlen, unsigned int flags); |
328 | #endif /* _LINUX_SOCKET_H */ |
329 |
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