1 #ifndef _LINUX_SOCKET_H
2 #define _LINUX_SOCKET_H
5 * Desired design of maximum size and alignment (see RFC2553)
7 #define _K_SS_MAXSIZE 128 /* Implementation specific max size */
8 #define _K_SS_ALIGNSIZE (__alignof__ (struct sockaddr *))
9 /* Implementation specific desired alignment */
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 */
19 #if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2)
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 */
29 typedef unsigned short sa_family_t
;
32 * 1003.1g requires sa_family_t and that sa_data is char.
36 sa_family_t sa_family
; /* address family, AF_xxx */
37 char sa_data
[14]; /* 14 bytes of protocol address */
41 int l_onoff
; /* Linger active */
42 int l_linger
; /* How long to linger for */
45 #define sockaddr_storage __kernel_sockaddr_storage
48 * As we do 4.4BSD message passing we use a 4.4BSD message passing
49 * system, not 4.3. Thus msg_accrights(len) are now missing. They
50 * belong in an obscure libc emulation or the bin.
54 void * msg_name
; /* Socket name */
55 int msg_namelen
; /* Length of name */
56 struct iovec
* msg_iov
; /* Data blocks */
57 __kernel_size_t msg_iovlen
; /* Number of blocks */
58 void * msg_control
; /* Per protocol magic (eg BSD file descriptor passing) */
59 __kernel_size_t msg_controllen
; /* Length of cmsg list */
64 * POSIX 1003.1g - ancillary data object information
65 * Ancillary data consits of a sequence of pairs of
66 * (cmsghdr, cmsg_data[])
70 __kernel_size_t cmsg_len
; /* data byte count, including hdr */
71 int cmsg_level
; /* originating protocol */
72 int cmsg_type
; /* protocol-specific type */
76 * Ancilliary data object information MACROS
77 * Table 5-14 of POSIX 1003.1g
80 #define __CMSG_NXTHDR(ctl, len, cmsg) __cmsg_nxthdr((ctl),(len),(cmsg))
81 #define CMSG_NXTHDR(mhdr, cmsg) cmsg_nxthdr((mhdr), (cmsg))
83 #define CMSG_ALIGN(len) ( ((len)+sizeof(long)-1) & ~(sizeof(long)-1) )
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))
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)
95 * This mess will go away with glibc
99 #define __KINLINE static inline
100 #elif defined(__GNUC__)
101 #define __KINLINE static __inline__
102 #elif defined(__cplusplus)
103 #define __KINLINE static inline
105 #define __KINLINE static
110 * Get the next cmsg header
112 * PLEASE, do not touch this function. If you think, that it is
113 * incorrect, grep kernel sources and think about consequences
114 * before trying to improve it.
116 * Now it always returns valid, not truncated ancillary object
117 * HEADER. But caller still MUST check, that cmsg->cmsg_len is
118 * inside range, given by msg->msg_controllen before using
119 * ansillary object DATA. --ANK (980731)
122 __KINLINE
struct cmsghdr
* __cmsg_nxthdr(void *__ctl
, __kernel_size_t __size
,
123 struct cmsghdr
*__cmsg
)
125 struct cmsghdr
* __ptr
;
127 __ptr
= (struct cmsghdr
*)(((unsigned char *) __cmsg
) + CMSG_ALIGN(__cmsg
->cmsg_len
));
128 if ((unsigned long)((char*)(__ptr
+1) - (char *) __ctl
) > __size
)
129 return (struct cmsghdr
*)0;
134 __KINLINE
struct cmsghdr
* cmsg_nxthdr (struct msghdr
*__msg
, struct cmsghdr
*__cmsg
)
136 return __cmsg_nxthdr(__msg
->msg_control
, __msg
->msg_controllen
, __cmsg
);
139 /* "Socket"-level control message types: */
141 #define SCM_RIGHTS 0x01 /* rw: access rights (array of int) */
142 #define SCM_CREDENTIALS 0x02 /* rw: struct ucred */
143 #define SCM_CONNECT 0x03 /* rw: struct scm_connect */
151 /* Supported address families. */
153 #define AF_UNIX 1 /* Unix domain sockets */
154 #define AF_LOCAL 1 /* POSIX name for AF_UNIX */
155 #define AF_INET 2 /* Internet IP Protocol */
156 #define AF_AX25 3 /* Amateur Radio AX.25 */
157 #define AF_IPX 4 /* Novell IPX */
158 #define AF_APPLETALK 5 /* AppleTalk DDP */
159 #define AF_NETROM 6 /* Amateur Radio NET/ROM */
160 #define AF_BRIDGE 7 /* Multiprotocol bridge */
161 #define AF_ATMPVC 8 /* ATM PVCs */
162 #define AF_X25 9 /* Reserved for X.25 project */
163 #define AF_INET6 10 /* IP version 6 */
164 #define AF_ROSE 11 /* Amateur Radio X.25 PLP */
165 #define AF_DECnet 12 /* Reserved for DECnet project */
166 #define AF_NETBEUI 13 /* Reserved for 802.2LLC project*/
167 #define AF_SECURITY 14 /* Security callback pseudo AF */
168 #define AF_KEY 15 /* PF_KEY key management API */
169 #define AF_NETLINK 16
170 #define AF_ROUTE AF_NETLINK /* Alias to emulate 4.4BSD */
171 #define AF_PACKET 17 /* Packet family */
172 #define AF_ASH 18 /* Ash */
173 #define AF_ECONET 19 /* Acorn Econet */
174 #define AF_ATMSVC 20 /* ATM SVCs */
175 #define AF_SNA 22 /* Linux SNA Project (nutters!) */
176 #define AF_IRDA 23 /* IRDA sockets */
177 #define AF_PPPOX 24 /* PPPoX sockets */
178 #define AF_WANPIPE 25 /* Wanpipe API Sockets */
179 #define AF_LLC 26 /* Linux LLC */
180 #define AF_BLUETOOTH 31 /* Bluetooth sockets */
181 #define AF_MAX 32 /* For now.. */
183 /* Protocol families, same as address families. */
184 #define PF_UNSPEC AF_UNSPEC
185 #define PF_UNIX AF_UNIX
186 #define PF_LOCAL AF_LOCAL
187 #define PF_INET AF_INET
188 #define PF_AX25 AF_AX25
189 #define PF_IPX AF_IPX
190 #define PF_APPLETALK AF_APPLETALK
191 #define PF_NETROM AF_NETROM
192 #define PF_BRIDGE AF_BRIDGE
193 #define PF_ATMPVC AF_ATMPVC
194 #define PF_X25 AF_X25
195 #define PF_INET6 AF_INET6
196 #define PF_ROSE AF_ROSE
197 #define PF_DECnet AF_DECnet
198 #define PF_NETBEUI AF_NETBEUI
199 #define PF_SECURITY AF_SECURITY
200 #define PF_KEY AF_KEY
201 #define PF_NETLINK AF_NETLINK
202 #define PF_ROUTE AF_ROUTE
203 #define PF_PACKET AF_PACKET
204 #define PF_ASH AF_ASH
205 #define PF_ECONET AF_ECONET
206 #define PF_ATMSVC AF_ATMSVC
207 #define PF_SNA AF_SNA
208 #define PF_IRDA AF_IRDA
209 #define PF_PPPOX AF_PPPOX
210 #define PF_WANPIPE AF_WANPIPE
211 #define PF_LLC AF_LLC
212 #define PF_BLUETOOTH AF_BLUETOOTH
213 #define PF_MAX AF_MAX
215 /* Maximum queue length specifiable by listen. */
216 #define SOMAXCONN 128
218 /* Flags we can use with send/ and recv.
219 Added those for 1003.1g not all are supported yet
224 #define MSG_DONTROUTE 4
225 #define MSG_TRYHARD 4 /* Synonym for MSG_DONTROUTE for DECnet */
227 #define MSG_PROBE 0x10 /* Do not send. Only probe path f.e. for MTU */
228 #define MSG_TRUNC 0x20
229 #define MSG_DONTWAIT 0x40 /* Nonblocking io */
230 #define MSG_EOR 0x80 /* End of record */
231 #define MSG_WAITALL 0x100 /* Wait for a full request */
232 #define MSG_FIN 0x200
233 #define MSG_SYN 0x400
234 #define MSG_CONFIRM 0x800 /* Confirm path validity */
235 #define MSG_RST 0x1000
236 #define MSG_ERRQUEUE 0x2000 /* Fetch message from error queue */
237 #define MSG_NOSIGNAL 0x4000 /* Do not generate SIGPIPE */
238 #define MSG_MORE 0x8000 /* Sender will send more */
240 #define MSG_EOF MSG_FIN
242 #if defined(CONFIG_COMPAT)
243 #define MSG_CMSG_COMPAT 0x80000000 /* This message needs 32 bit fixups */
245 #define MSG_CMSG_COMPAT 0 /* We never have 32 bit fixups */
249 /* Setsockoptions(2) level. Thanks to BSD these must match IPPROTO_xxx */
251 /* #define SOL_ICMP 1 No-no-no! Due to Linux :-) we cannot use SOL_ICMP=1 */
255 #define SOL_ICMPV6 58
260 #define SOL_ATALK 258
261 #define SOL_NETROM 259
263 #define SOL_DECNET 261
265 #define SOL_PACKET 263
266 #define SOL_ATM 264 /* ATM layer (cell level) */
267 #define SOL_AAL 265 /* ATM Adaption Layer (packet level) */
269 #define SOL_NETBEUI 267
276 extern int memcpy_fromiovec(unsigned char *kdata
, struct iovec
*iov
, int len
);
277 extern int memcpy_fromiovecend(unsigned char *kdata
, struct iovec
*iov
,
278 int offset
, int len
);
279 extern int csum_partial_copy_fromiovecend(unsigned char *kdata
,
282 unsigned int len
, int *csump
);
284 extern int verify_iovec(struct msghdr
*m
, struct iovec
*iov
, char *address
, int mode
);
285 extern int memcpy_toiovec(struct iovec
*v
, unsigned char *kdata
, int len
);
286 extern void memcpy_tokerneliovec(struct iovec
*iov
, unsigned char *kdata
, int len
);
287 extern int move_addr_to_user(void *kaddr
, int klen
, void __user
*uaddr
, int __user
*ulen
);
288 extern int move_addr_to_kernel(void __user
*uaddr
, int ulen
, void *kaddr
);
289 extern int put_cmsg(struct msghdr
*, int level
, int type
, int len
, void *data
);
292 #endif /* not kernel and not glibc */
293 #endif /* _LINUX_SOCKET_H */