1
2#ifndef _LINUX_SOCKET_H
3#define _LINUX_SOCKET_H
4
5
6#include <asm/socket.h>
7#include <linux/sockios.h>
8#include <linux/uio.h>
9#include <linux/types.h>
10#include <linux/compiler.h>
11#include <uapi/linux/socket.h>
12
13struct file;
14struct pid;
15struct cred;
16struct socket;
17
18#define __sockaddr_check_size(size) \
19 BUILD_BUG_ON(((size) > sizeof(struct __kernel_sockaddr_storage)))
20
21#ifdef CONFIG_PROC_FS
22struct seq_file;
23extern void socket_seq_show(struct seq_file *seq);
24#endif
25
26typedef __kernel_sa_family_t sa_family_t;
27
28
29
30
31
32struct sockaddr {
33 sa_family_t sa_family;
34 char sa_data[14];
35};
36
37struct linger {
38 int l_onoff;
39 int l_linger;
40};
41
42#define sockaddr_storage __kernel_sockaddr_storage
43
44
45
46
47
48
49
50struct msghdr {
51 void *msg_name;
52 int msg_namelen;
53 struct iov_iter msg_iter;
54
55
56
57
58
59
60 union {
61 void *msg_control;
62 void __user *msg_control_user;
63 };
64 bool msg_control_is_user : 1;
65 __kernel_size_t msg_controllen;
66 unsigned int msg_flags;
67 struct kiocb *msg_iocb;
68};
69
70struct user_msghdr {
71 void __user *msg_name;
72 int msg_namelen;
73 struct iovec __user *msg_iov;
74 __kernel_size_t msg_iovlen;
75 void __user *msg_control;
76 __kernel_size_t msg_controllen;
77 unsigned int msg_flags;
78};
79
80
81struct mmsghdr {
82 struct user_msghdr msg_hdr;
83 unsigned int msg_len;
84};
85
86
87
88
89
90
91
92struct cmsghdr {
93 __kernel_size_t cmsg_len;
94 int cmsg_level;
95 int cmsg_type;
96};
97
98
99
100
101
102
103#define __CMSG_NXTHDR(ctl, len, cmsg) __cmsg_nxthdr((ctl),(len),(cmsg))
104#define CMSG_NXTHDR(mhdr, cmsg) cmsg_nxthdr((mhdr), (cmsg))
105
106#define CMSG_ALIGN(len) ( ((len)+sizeof(long)-1) & ~(sizeof(long)-1) )
107
108#define CMSG_DATA(cmsg) \
109 ((void *)(cmsg) + sizeof(struct cmsghdr))
110#define CMSG_USER_DATA(cmsg) \
111 ((void __user *)(cmsg) + sizeof(struct cmsghdr))
112#define CMSG_SPACE(len) (sizeof(struct cmsghdr) + CMSG_ALIGN(len))
113#define CMSG_LEN(len) (sizeof(struct cmsghdr) + (len))
114
115#define __CMSG_FIRSTHDR(ctl,len) ((len) >= sizeof(struct cmsghdr) ? \
116 (struct cmsghdr *)(ctl) : \
117 (struct cmsghdr *)NULL)
118#define CMSG_FIRSTHDR(msg) __CMSG_FIRSTHDR((msg)->msg_control, (msg)->msg_controllen)
119#define CMSG_OK(mhdr, cmsg) ((cmsg)->cmsg_len >= sizeof(struct cmsghdr) && \
120 (cmsg)->cmsg_len <= (unsigned long) \
121 ((mhdr)->msg_controllen - \
122 ((char *)(cmsg) - (char *)(mhdr)->msg_control)))
123#define for_each_cmsghdr(cmsg, msg) \
124 for (cmsg = CMSG_FIRSTHDR(msg); \
125 cmsg; \
126 cmsg = CMSG_NXTHDR(msg, cmsg))
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141static inline struct cmsghdr * __cmsg_nxthdr(void *__ctl, __kernel_size_t __size,
142 struct cmsghdr *__cmsg)
143{
144 struct cmsghdr * __ptr;
145
146 __ptr = (struct cmsghdr*)(((unsigned char *) __cmsg) + CMSG_ALIGN(__cmsg->cmsg_len));
147 if ((unsigned long)((char*)(__ptr+1) - (char *) __ctl) > __size)
148 return (struct cmsghdr *)0;
149
150 return __ptr;
151}
152
153static inline struct cmsghdr * cmsg_nxthdr (struct msghdr *__msg, struct cmsghdr *__cmsg)
154{
155 return __cmsg_nxthdr(__msg->msg_control, __msg->msg_controllen, __cmsg);
156}
157
158static inline size_t msg_data_left(struct msghdr *msg)
159{
160 return iov_iter_count(&msg->msg_iter);
161}
162
163
164
165#define SCM_RIGHTS 0x01
166#define SCM_CREDENTIALS 0x02
167#define SCM_SECURITY 0x03
168
169struct ucred {
170 __u32 pid;
171 __u32 uid;
172 __u32 gid;
173};
174
175
176#define AF_UNSPEC 0
177#define AF_UNIX 1
178#define AF_LOCAL 1
179#define AF_INET 2
180#define AF_AX25 3
181#define AF_IPX 4
182#define AF_APPLETALK 5
183#define AF_NETROM 6
184#define AF_BRIDGE 7
185#define AF_ATMPVC 8
186#define AF_X25 9
187#define AF_INET6 10
188#define AF_ROSE 11
189#define AF_DECnet 12
190#define AF_NETBEUI 13
191#define AF_SECURITY 14
192#define AF_KEY 15
193#define AF_NETLINK 16
194#define AF_ROUTE AF_NETLINK
195#define AF_PACKET 17
196#define AF_ASH 18
197#define AF_ECONET 19
198#define AF_ATMSVC 20
199#define AF_RDS 21
200#define AF_SNA 22
201#define AF_IRDA 23
202#define AF_PPPOX 24
203#define AF_WANPIPE 25
204#define AF_LLC 26
205#define AF_IB 27
206#define AF_MPLS 28
207#define AF_CAN 29
208#define AF_TIPC 30
209#define AF_BLUETOOTH 31
210#define AF_IUCV 32
211#define AF_RXRPC 33
212#define AF_ISDN 34
213#define AF_PHONET 35
214#define AF_IEEE802154 36
215#define AF_CAIF 37
216#define AF_ALG 38
217#define AF_NFC 39
218#define AF_VSOCK 40
219#define AF_KCM 41
220#define AF_QIPCRTR 42
221#define AF_SMC 43
222
223
224
225#define AF_XDP 44
226#define AF_MCTP 45
227
228
229
230#define AF_MAX 46
231
232
233#define PF_UNSPEC AF_UNSPEC
234#define PF_UNIX AF_UNIX
235#define PF_LOCAL AF_LOCAL
236#define PF_INET AF_INET
237#define PF_AX25 AF_AX25
238#define PF_IPX AF_IPX
239#define PF_APPLETALK AF_APPLETALK
240#define PF_NETROM AF_NETROM
241#define PF_BRIDGE AF_BRIDGE
242#define PF_ATMPVC AF_ATMPVC
243#define PF_X25 AF_X25
244#define PF_INET6 AF_INET6
245#define PF_ROSE AF_ROSE
246#define PF_DECnet AF_DECnet
247#define PF_NETBEUI AF_NETBEUI
248#define PF_SECURITY AF_SECURITY
249#define PF_KEY AF_KEY
250#define PF_NETLINK AF_NETLINK
251#define PF_ROUTE AF_ROUTE
252#define PF_PACKET AF_PACKET
253#define PF_ASH AF_ASH
254#define PF_ECONET AF_ECONET
255#define PF_ATMSVC AF_ATMSVC
256#define PF_RDS AF_RDS
257#define PF_SNA AF_SNA
258#define PF_IRDA AF_IRDA
259#define PF_PPPOX AF_PPPOX
260#define PF_WANPIPE AF_WANPIPE
261#define PF_LLC AF_LLC
262#define PF_IB AF_IB
263#define PF_MPLS AF_MPLS
264#define PF_CAN AF_CAN
265#define PF_TIPC AF_TIPC
266#define PF_BLUETOOTH AF_BLUETOOTH
267#define PF_IUCV AF_IUCV
268#define PF_RXRPC AF_RXRPC
269#define PF_ISDN AF_ISDN
270#define PF_PHONET AF_PHONET
271#define PF_IEEE802154 AF_IEEE802154
272#define PF_CAIF AF_CAIF
273#define PF_ALG AF_ALG
274#define PF_NFC AF_NFC
275#define PF_VSOCK AF_VSOCK
276#define PF_KCM AF_KCM
277#define PF_QIPCRTR AF_QIPCRTR
278#define PF_SMC AF_SMC
279#define PF_XDP AF_XDP
280#define PF_MCTP AF_MCTP
281#define PF_MAX AF_MAX
282
283
284#define SOMAXCONN 4096
285
286
287
288
289
290#define MSG_OOB 1
291#define MSG_PEEK 2
292#define MSG_DONTROUTE 4
293#define MSG_TRYHARD 4
294#define MSG_CTRUNC 8
295#define MSG_PROBE 0x10
296#define MSG_TRUNC 0x20
297#define MSG_DONTWAIT 0x40
298#define MSG_EOR 0x80
299#define MSG_WAITALL 0x100
300#define MSG_FIN 0x200
301#define MSG_SYN 0x400
302#define MSG_CONFIRM 0x800
303#define MSG_RST 0x1000
304#define MSG_ERRQUEUE 0x2000
305#define MSG_NOSIGNAL 0x4000
306#define MSG_MORE 0x8000
307#define MSG_WAITFORONE 0x10000
308#define MSG_SENDPAGE_NOPOLICY 0x10000
309#define MSG_SENDPAGE_NOTLAST 0x20000
310#define MSG_BATCH 0x40000
311#define MSG_EOF MSG_FIN
312#define MSG_NO_SHARED_FRAGS 0x80000
313#define MSG_SENDPAGE_DECRYPTED 0x100000
314
315
316
317#define MSG_ZEROCOPY 0x4000000
318#define MSG_FASTOPEN 0x20000000
319#define MSG_CMSG_CLOEXEC 0x40000000
320
321
322#if defined(CONFIG_COMPAT)
323#define MSG_CMSG_COMPAT 0x80000000
324#else
325#define MSG_CMSG_COMPAT 0
326#endif
327
328
329
330#define SOL_IP 0
331
332#define SOL_TCP 6
333#define SOL_UDP 17
334#define SOL_IPV6 41
335#define SOL_ICMPV6 58
336#define SOL_SCTP 132
337#define SOL_UDPLITE 136
338#define SOL_RAW 255
339#define SOL_IPX 256
340#define SOL_AX25 257
341#define SOL_ATALK 258
342#define SOL_NETROM 259
343#define SOL_ROSE 260
344#define SOL_DECNET 261
345#define SOL_X25 262
346#define SOL_PACKET 263
347#define SOL_ATM 264
348#define SOL_AAL 265
349#define SOL_IRDA 266
350#define SOL_NETBEUI 267
351#define SOL_LLC 268
352#define SOL_DCCP 269
353#define SOL_NETLINK 270
354#define SOL_TIPC 271
355#define SOL_RXRPC 272
356#define SOL_PPPOL2TP 273
357#define SOL_BLUETOOTH 274
358#define SOL_PNPIPE 275
359#define SOL_RDS 276
360#define SOL_IUCV 277
361#define SOL_CAIF 278
362#define SOL_ALG 279
363#define SOL_NFC 280
364#define SOL_KCM 281
365#define SOL_TLS 282
366#define SOL_XDP 283
367
368
369#define IPX_TYPE 1
370
371extern int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr_storage *kaddr);
372extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data);
373
374struct timespec64;
375struct __kernel_timespec;
376struct old_timespec32;
377
378struct scm_timestamping_internal {
379 struct timespec64 ts[3];
380};
381
382extern void put_cmsg_scm_timestamping64(struct msghdr *msg, struct scm_timestamping_internal *tss);
383extern void put_cmsg_scm_timestamping(struct msghdr *msg, struct scm_timestamping_internal *tss);
384
385
386
387
388extern long __sys_recvmsg(int fd, struct user_msghdr __user *msg,
389 unsigned int flags, bool forbid_cmsg_compat);
390extern long __sys_sendmsg(int fd, struct user_msghdr __user *msg,
391 unsigned int flags, bool forbid_cmsg_compat);
392extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg,
393 unsigned int vlen, unsigned int flags,
394 struct __kernel_timespec __user *timeout,
395 struct old_timespec32 __user *timeout32);
396extern int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg,
397 unsigned int vlen, unsigned int flags,
398 bool forbid_cmsg_compat);
399extern long __sys_sendmsg_sock(struct socket *sock, struct msghdr *msg,
400 unsigned int flags);
401extern long __sys_recvmsg_sock(struct socket *sock, struct msghdr *msg,
402 struct user_msghdr __user *umsg,
403 struct sockaddr __user *uaddr,
404 unsigned int flags);
405extern int sendmsg_copy_msghdr(struct msghdr *msg,
406 struct user_msghdr __user *umsg, unsigned flags,
407 struct iovec **iov);
408extern int recvmsg_copy_msghdr(struct msghdr *msg,
409 struct user_msghdr __user *umsg, unsigned flags,
410 struct sockaddr __user **uaddr,
411 struct iovec **iov);
412extern int __copy_msghdr_from_user(struct msghdr *kmsg,
413 struct user_msghdr __user *umsg,
414 struct sockaddr __user **save_addr,
415 struct iovec __user **uiov, size_t *nsegs);
416
417
418extern int __sys_recvfrom(int fd, void __user *ubuf, size_t size,
419 unsigned int flags, struct sockaddr __user *addr,
420 int __user *addr_len);
421extern int __sys_sendto(int fd, void __user *buff, size_t len,
422 unsigned int flags, struct sockaddr __user *addr,
423 int addr_len);
424extern int __sys_accept4_file(struct file *file, unsigned file_flags,
425 struct sockaddr __user *upeer_sockaddr,
426 int __user *upeer_addrlen, int flags,
427 unsigned long nofile);
428extern struct file *do_accept(struct file *file, unsigned file_flags,
429 struct sockaddr __user *upeer_sockaddr,
430 int __user *upeer_addrlen, int flags);
431extern int __sys_accept4(int fd, struct sockaddr __user *upeer_sockaddr,
432 int __user *upeer_addrlen, int flags);
433extern int __sys_socket(int family, int type, int protocol);
434extern int __sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen);
435extern int __sys_connect_file(struct file *file, struct sockaddr_storage *addr,
436 int addrlen, int file_flags);
437extern int __sys_connect(int fd, struct sockaddr __user *uservaddr,
438 int addrlen);
439extern int __sys_listen(int fd, int backlog);
440extern int __sys_getsockname(int fd, struct sockaddr __user *usockaddr,
441 int __user *usockaddr_len);
442extern int __sys_getpeername(int fd, struct sockaddr __user *usockaddr,
443 int __user *usockaddr_len);
444extern int __sys_socketpair(int family, int type, int protocol,
445 int __user *usockvec);
446extern int __sys_shutdown_sock(struct socket *sock, int how);
447extern int __sys_shutdown(int fd, int how);
448#endif
449