1 #ifndef _LINUX_SOCKET_H
2 #define _LINUX_SOCKET_H
4 #if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2)
6 #include <asm/socket.h> /* arch-dependent defines */
7 #include <linux/sockios.h> /* the SIOCxxx I/O controls */
8 #include <linux/uio.h> /* iovec support */
9 #include <linux/types.h> /* pid_t */
11 typedef unsigned short sa_family_t
;
14 * 1003.1g requires sa_family_t and that sa_data is char.
18 sa_family_t sa_family
; /* address family, AF_xxx */
19 char sa_data
[14]; /* 14 bytes of protocol address */
23 int l_onoff
; /* Linger active */
24 int l_linger
; /* How long to linger for */
28 * As we do 4.4BSD message passing we use a 4.4BSD message passing
29 * system, not 4.3. Thus msg_accrights(len) are now missing. They
30 * belong in an obscure libc emulation or the bin.
34 void * msg_name
; /* Socket name */
35 int msg_namelen
; /* Length of name */
36 struct iovec
* msg_iov
; /* Data blocks */
37 __kernel_size_t msg_iovlen
; /* Number of blocks */
38 void * msg_control
; /* Per protocol magic (eg BSD file descriptor passing) */
39 __kernel_size_t msg_controllen
; /* Length of cmsg list */
44 * POSIX 1003.1g - ancillary data object information
45 * Ancillary data consits of a sequence of pairs of
46 * (cmsghdr, cmsg_data[])
50 __kernel_size_t cmsg_len
; /* data byte count, including hdr */
51 int cmsg_level
; /* originating protocol */
52 int cmsg_type
; /* protocol-specific type */
56 * Ancilliary data object information MACROS
57 * Table 5-14 of POSIX 1003.1g
60 #define __CMSG_NXTHDR(ctl, len, cmsg) __cmsg_nxthdr((ctl),(len),(cmsg))
61 #define CMSG_NXTHDR(mhdr, cmsg) cmsg_nxthdr((mhdr), (cmsg))
63 #define CMSG_ALIGN(len) ( ((len)+sizeof(long)-1) & ~(sizeof(long)-1) )
65 #define CMSG_DATA(cmsg) ((void *)((char *)(cmsg) + CMSG_ALIGN(sizeof(struct cmsghdr))))
66 #define CMSG_SPACE(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + CMSG_ALIGN(len))
67 #define CMSG_LEN(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + (len))
69 #define __CMSG_FIRSTHDR(ctl,len) ((len) >= sizeof(struct cmsghdr) ? \
70 (struct cmsghdr *)(ctl) : \
71 (struct cmsghdr *)NULL)
72 #define CMSG_FIRSTHDR(msg) __CMSG_FIRSTHDR((msg)->msg_control, (msg)->msg_controllen)
75 * This mess will go away with glibc
79 #define __KINLINE static inline
80 #elif defined(__GNUC__)
81 #define __KINLINE static __inline__
82 #elif defined(__cplusplus)
83 #define __KINLINE static inline
85 #define __KINLINE static
90 * Get the next cmsg header
92 * PLEASE, do not touch this function. If you think, that it is
93 * incorrect, grep kernel sources and think about consequences
94 * before trying to improve it.
96 * Now it always returns valid, not truncated ancillary object
97 * HEADER. But caller still MUST check, that cmsg->cmsg_len is
98 * inside range, given by msg->msg_controllen before using
99 * ansillary object DATA. --ANK (980731)
102 __KINLINE
struct cmsghdr
* __cmsg_nxthdr(void *__ctl
, __kernel_size_t __size
,
103 struct cmsghdr
*__cmsg
)
105 struct cmsghdr
* __ptr
;
107 __ptr
= (struct cmsghdr
*)(((unsigned char *) __cmsg
) + CMSG_ALIGN(__cmsg
->cmsg_len
));
108 if ((unsigned long)((char*)(__ptr
+1) - (char *) __ctl
) > __size
)
109 return (struct cmsghdr
*)0;
114 __KINLINE
struct cmsghdr
* cmsg_nxthdr (struct msghdr
*__msg
, struct cmsghdr
*__cmsg
)
116 return __cmsg_nxthdr(__msg
->msg_control
, __msg
->msg_controllen
, __cmsg
);
119 /* "Socket"-level control message types: */
121 #define SCM_RIGHTS 0x01 /* rw: access rights (array of int) */
122 #define SCM_CREDENTIALS 0x02 /* rw: struct ucred */
123 #define SCM_CONNECT 0x03 /* rw: struct scm_connect */
131 /* Supported address families. */
133 #define AF_UNIX 1 /* Unix domain sockets */
134 #define AF_LOCAL 1 /* POSIX name for AF_UNIX */
135 #define AF_INET 2 /* Internet IP Protocol */
136 #define AF_AX25 3 /* Amateur Radio AX.25 */
137 #define AF_IPX 4 /* Novell IPX */
138 #define AF_APPLETALK 5 /* AppleTalk DDP */
139 #define AF_NETROM 6 /* Amateur Radio NET/ROM */
140 #define AF_BRIDGE 7 /* Multiprotocol bridge */
141 #define AF_ATMPVC 8 /* ATM PVCs */
142 #define AF_X25 9 /* Reserved for X.25 project */
143 #define AF_INET6 10 /* IP version 6 */
144 #define AF_ROSE 11 /* Amateur Radio X.25 PLP */
145 #define AF_DECnet 12 /* Reserved for DECnet project */
146 #define AF_NETBEUI 13 /* Reserved for 802.2LLC project*/
147 #define AF_SECURITY 14 /* Security callback pseudo AF */
148 #define AF_KEY 15 /* PF_KEY key management API */
149 #define AF_NETLINK 16
150 #define AF_ROUTE AF_NETLINK /* Alias to emulate 4.4BSD */
151 #define AF_PACKET 17 /* Packet family */
152 #define AF_ASH 18 /* Ash */
153 #define AF_ECONET 19 /* Acorn Econet */
154 #define AF_ATMSVC 20 /* ATM SVCs */
155 #define AF_SNA 22 /* Linux SNA Project (nutters!) */
156 #define AF_IRDA 23 /* IRDA sockets */
157 #define AF_PPPOX 24 /* PPPoX sockets */
158 #define AF_MAX 32 /* For now.. */
160 /* Protocol families, same as address families. */
161 #define PF_UNSPEC AF_UNSPEC
162 #define PF_UNIX AF_UNIX
163 #define PF_LOCAL AF_LOCAL
164 #define PF_INET AF_INET
165 #define PF_AX25 AF_AX25
166 #define PF_IPX AF_IPX
167 #define PF_APPLETALK AF_APPLETALK
168 #define PF_NETROM AF_NETROM
169 #define PF_BRIDGE AF_BRIDGE
170 #define PF_ATMPVC AF_ATMPVC
171 #define PF_X25 AF_X25
172 #define PF_INET6 AF_INET6
173 #define PF_ROSE AF_ROSE
174 #define PF_DECnet AF_DECnet
175 #define PF_NETBEUI AF_NETBEUI
176 #define PF_SECURITY AF_SECURITY
177 #define PF_KEY AF_KEY
178 #define PF_NETLINK AF_NETLINK
179 #define PF_ROUTE AF_ROUTE
180 #define PF_PACKET AF_PACKET
181 #define PF_ASH AF_ASH
182 #define PF_ECONET AF_ECONET
183 #define PF_ATMSVC AF_ATMSVC
184 #define PF_SNA AF_SNA
185 #define PF_IRDA AF_IRDA
186 #define PF_PPPOX AF_PPPOX
187 #define PF_MAX AF_MAX
189 /* Maximum queue length specifiable by listen. */
190 #define SOMAXCONN 128
192 /* Flags we can use with send/ and recv.
193 Added those for 1003.1g not all are supported yet
198 #define MSG_DONTROUTE 4
199 #define MSG_TRYHARD 4 /* Synonym for MSG_DONTROUTE for DECnet */
201 #define MSG_PROBE 0x10 /* Do not send. Only probe path f.e. for MTU */
202 #define MSG_TRUNC 0x20
203 #define MSG_DONTWAIT 0x40 /* Nonblocking io */
204 #define MSG_EOR 0x80 /* End of record */
205 #define MSG_WAITALL 0x100 /* Wait for a full request */
206 #define MSG_FIN 0x200
207 #define MSG_SYN 0x400
208 #define MSG_CONFIRM 0x800 /* Confirm path validity */
209 #define MSG_RST 0x1000
210 #define MSG_ERRQUEUE 0x2000 /* Fetch message from error queue */
211 #define MSG_NOSIGNAL 0x4000 /* Do not generate SIGPIPE */
213 #define MSG_EOF MSG_FIN
216 /* Setsockoptions(2) level. Thanks to BSD these must match IPPROTO_xxx */
218 /* #define SOL_ICMP 1 No-no-no! Due to Linux :-) we cannot use SOL_ICMP=1 */
222 #define SOL_ICMPV6 58
226 #define SOL_ATALK 258
227 #define SOL_NETROM 259
229 #define SOL_DECNET 261
231 #define SOL_PACKET 263
232 #define SOL_ATM 264 /* ATM layer (cell level) */
233 #define SOL_AAL 265 /* ATM Adaption Layer (packet level) */
240 extern int memcpy_fromiovec(unsigned char *kdata
, struct iovec
*iov
, int len
);
241 extern int memcpy_fromiovecend(unsigned char *kdata
, struct iovec
*iov
,
242 int offset
, int len
);
243 extern int csum_partial_copy_fromiovecend(unsigned char *kdata
,
246 unsigned int len
, int *csump
);
248 extern int verify_iovec(struct msghdr
*m
, struct iovec
*iov
, char *address
, int mode
);
249 extern int memcpy_toiovec(struct iovec
*v
, unsigned char *kdata
, int len
);
250 extern void memcpy_tokerneliovec(struct iovec
*iov
, unsigned char *kdata
, int len
);
251 extern int move_addr_to_user(void *kaddr
, int klen
, void *uaddr
, int *ulen
);
252 extern int move_addr_to_kernel(void *uaddr
, int ulen
, void *kaddr
);
253 extern int put_cmsg(struct msghdr
*, int level
, int type
, int len
, void *data
);
255 #endif /* not kernel and not glibc */
256 #endif /* _LINUX_SOCKET_H */