1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_SOCKET_H 2 #ifndef _LINUX_SOCKET_H
3 #define _LINUX_SOCKET_H 3 #define _LINUX_SOCKET_H
4 4
5 5
6 #include <asm/socket.h> /* arc 6 #include <asm/socket.h> /* arch-dependent defines */
7 #include <linux/sockios.h> /* the 7 #include <linux/sockios.h> /* the SIOCxxx I/O controls */
8 #include <linux/uio.h> /* iov 8 #include <linux/uio.h> /* iovec support */
9 #include <linux/types.h> /* pid 9 #include <linux/types.h> /* pid_t */
10 #include <linux/compiler.h> /* __u 10 #include <linux/compiler.h> /* __user */
11 #include <uapi/linux/socket.h> 11 #include <uapi/linux/socket.h>
12 12
13 struct file; 13 struct file;
14 struct pid; 14 struct pid;
15 struct cred; 15 struct cred;
16 struct socket; 16 struct socket;
17 struct sock; 17 struct sock;
18 struct sk_buff; 18 struct sk_buff;
19 struct proto_accept_arg; <<
20 19
21 #define __sockaddr_check_size(size) \ 20 #define __sockaddr_check_size(size) \
22 BUILD_BUG_ON(((size) > sizeof(struct _ 21 BUILD_BUG_ON(((size) > sizeof(struct __kernel_sockaddr_storage)))
23 22
24 #ifdef CONFIG_PROC_FS 23 #ifdef CONFIG_PROC_FS
25 struct seq_file; 24 struct seq_file;
26 extern void socket_seq_show(struct seq_file *s 25 extern void socket_seq_show(struct seq_file *seq);
27 #endif 26 #endif
28 27
29 typedef __kernel_sa_family_t sa_family_t; 28 typedef __kernel_sa_family_t sa_family_t;
30 29
31 /* 30 /*
32 * 1003.1g requires sa_family_t and that 31 * 1003.1g requires sa_family_t and that sa_data is char.
33 */ 32 */
34 33
35 struct sockaddr { 34 struct sockaddr {
36 sa_family_t sa_family; /* add 35 sa_family_t sa_family; /* address family, AF_xxx */
37 union { 36 union {
38 char sa_data_min[14]; 37 char sa_data_min[14]; /* Minimum 14 bytes of protocol address */
39 DECLARE_FLEX_ARRAY(char, sa_da 38 DECLARE_FLEX_ARRAY(char, sa_data);
40 }; 39 };
41 }; 40 };
42 41
43 struct linger { 42 struct linger {
44 int l_onoff; /* Lin 43 int l_onoff; /* Linger active */
45 int l_linger; /* How 44 int l_linger; /* How long to linger for */
46 }; 45 };
47 46
48 #define sockaddr_storage __kernel_sockaddr_sto 47 #define sockaddr_storage __kernel_sockaddr_storage
49 48
50 /* 49 /*
51 * As we do 4.4BSD message passing we use 50 * As we do 4.4BSD message passing we use a 4.4BSD message passing
52 * system, not 4.3. Thus msg_accrights(le 51 * system, not 4.3. Thus msg_accrights(len) are now missing. They
53 * belong in an obscure libc emulation or 52 * belong in an obscure libc emulation or the bin.
54 */ 53 */
55 54
56 struct msghdr { 55 struct msghdr {
57 void *msg_name; /* ptr 56 void *msg_name; /* ptr to socket address structure */
58 int msg_namelen; /* siz 57 int msg_namelen; /* size of socket address structure */
59 58
60 int msg_inq; /* out 59 int msg_inq; /* output, data left in socket */
61 60
62 struct iov_iter msg_iter; /* dat 61 struct iov_iter msg_iter; /* data */
63 62
64 /* 63 /*
65 * Ancillary data. msg_control_user is 64 * Ancillary data. msg_control_user is the user buffer used for the
66 * recv* side when msg_control_is_user 65 * recv* side when msg_control_is_user is set, msg_control is the kernel
67 * buffer used for all other cases. 66 * buffer used for all other cases.
68 */ 67 */
69 union { 68 union {
70 void *msg_control; 69 void *msg_control;
71 void __user *msg_control_u 70 void __user *msg_control_user;
72 }; 71 };
73 bool msg_control_is_user : 72 bool msg_control_is_user : 1;
74 bool msg_get_inq : 1;/* ret 73 bool msg_get_inq : 1;/* return INQ after receive */
75 unsigned int msg_flags; /* fla 74 unsigned int msg_flags; /* flags on received message */
76 __kernel_size_t msg_controllen; /* anc 75 __kernel_size_t msg_controllen; /* ancillary data buffer length */
77 struct kiocb *msg_iocb; /* ptr 76 struct kiocb *msg_iocb; /* ptr to iocb for async requests */
78 struct ubuf_info *msg_ubuf; 77 struct ubuf_info *msg_ubuf;
79 int (*sg_from_iter)(struct sk_buff *sk !! 78 int (*sg_from_iter)(struct sock *sk, struct sk_buff *skb,
80 struct iov_iter *f 79 struct iov_iter *from, size_t length);
81 }; 80 };
82 81
83 struct user_msghdr { 82 struct user_msghdr {
84 void __user *msg_name; 83 void __user *msg_name; /* ptr to socket address structure */
85 int msg_namelen; 84 int msg_namelen; /* size of socket address structure */
86 struct iovec __user *msg_iov; 85 struct iovec __user *msg_iov; /* scatter/gather array */
87 __kernel_size_t msg_iovlen; 86 __kernel_size_t msg_iovlen; /* # elements in msg_iov */
88 void __user *msg_control; 87 void __user *msg_control; /* ancillary data */
89 __kernel_size_t msg_controllen; 88 __kernel_size_t msg_controllen; /* ancillary data buffer length */
90 unsigned int msg_flags; 89 unsigned int msg_flags; /* flags on received message */
91 }; 90 };
92 91
93 /* For recvmmsg/sendmmsg */ 92 /* For recvmmsg/sendmmsg */
94 struct mmsghdr { 93 struct mmsghdr {
95 struct user_msghdr msg_hdr; 94 struct user_msghdr msg_hdr;
96 unsigned int msg_len; 95 unsigned int msg_len;
97 }; 96 };
98 97
99 /* 98 /*
100 * POSIX 1003.1g - ancillary data object 99 * POSIX 1003.1g - ancillary data object information
101 * Ancillary data consists of a sequence 100 * Ancillary data consists of a sequence of pairs of
102 * (cmsghdr, cmsg_data[]) 101 * (cmsghdr, cmsg_data[])
103 */ 102 */
104 103
105 struct cmsghdr { 104 struct cmsghdr {
106 __kernel_size_t cmsg_len; /* dat 105 __kernel_size_t cmsg_len; /* data byte count, including hdr */
107 int cmsg_level; /* ori 106 int cmsg_level; /* originating protocol */
108 int cmsg_type; /* pro 107 int cmsg_type; /* protocol-specific type */
109 }; 108 };
110 109
111 /* 110 /*
112 * Ancillary data object information MACR 111 * Ancillary data object information MACROS
113 * Table 5-14 of POSIX 1003.1g 112 * Table 5-14 of POSIX 1003.1g
114 */ 113 */
115 114
116 #define __CMSG_NXTHDR(ctl, len, cmsg) __cmsg_n 115 #define __CMSG_NXTHDR(ctl, len, cmsg) __cmsg_nxthdr((ctl),(len),(cmsg))
117 #define CMSG_NXTHDR(mhdr, cmsg) cmsg_nxthdr((m 116 #define CMSG_NXTHDR(mhdr, cmsg) cmsg_nxthdr((mhdr), (cmsg))
118 117
119 #define CMSG_ALIGN(len) ( ((len)+sizeof(long)- 118 #define CMSG_ALIGN(len) ( ((len)+sizeof(long)-1) & ~(sizeof(long)-1) )
120 119
121 #define CMSG_DATA(cmsg) \ 120 #define CMSG_DATA(cmsg) \
122 ((void *)(cmsg) + sizeof(struct cmsghd 121 ((void *)(cmsg) + sizeof(struct cmsghdr))
123 #define CMSG_USER_DATA(cmsg) \ 122 #define CMSG_USER_DATA(cmsg) \
124 ((void __user *)(cmsg) + sizeof(struct 123 ((void __user *)(cmsg) + sizeof(struct cmsghdr))
125 #define CMSG_SPACE(len) (sizeof(struct cmsghdr 124 #define CMSG_SPACE(len) (sizeof(struct cmsghdr) + CMSG_ALIGN(len))
126 #define CMSG_LEN(len) (sizeof(struct cmsghdr) 125 #define CMSG_LEN(len) (sizeof(struct cmsghdr) + (len))
127 126
128 #define __CMSG_FIRSTHDR(ctl,len) ((len) >= siz 127 #define __CMSG_FIRSTHDR(ctl,len) ((len) >= sizeof(struct cmsghdr) ? \
129 (struct cmsg 128 (struct cmsghdr *)(ctl) : \
130 (struct cmsg 129 (struct cmsghdr *)NULL)
131 #define CMSG_FIRSTHDR(msg) __CMSG_FIRSTHD 130 #define CMSG_FIRSTHDR(msg) __CMSG_FIRSTHDR((msg)->msg_control, (msg)->msg_controllen)
132 #define CMSG_OK(mhdr, cmsg) ((cmsg)->cmsg_len 131 #define CMSG_OK(mhdr, cmsg) ((cmsg)->cmsg_len >= sizeof(struct cmsghdr) && \
133 (cmsg)->cmsg_len 132 (cmsg)->cmsg_len <= (unsigned long) \
134 ((mhdr)->msg_cont 133 ((mhdr)->msg_controllen - \
135 ((char *)(cmsg) 134 ((char *)(cmsg) - (char *)(mhdr)->msg_control)))
136 #define for_each_cmsghdr(cmsg, msg) \ 135 #define for_each_cmsghdr(cmsg, msg) \
137 for (cmsg = CMSG_FIRSTHDR(msg); \ 136 for (cmsg = CMSG_FIRSTHDR(msg); \
138 cmsg; \ 137 cmsg; \
139 cmsg = CMSG_NXTHDR(msg, cmsg)) 138 cmsg = CMSG_NXTHDR(msg, cmsg))
140 139
141 /* 140 /*
142 * Get the next cmsg header 141 * Get the next cmsg header
143 * 142 *
144 * PLEASE, do not touch this function. If 143 * PLEASE, do not touch this function. If you think, that it is
145 * incorrect, grep kernel sources and thi 144 * incorrect, grep kernel sources and think about consequences
146 * before trying to improve it. 145 * before trying to improve it.
147 * 146 *
148 * Now it always returns valid, not trunc 147 * Now it always returns valid, not truncated ancillary object
149 * HEADER. But caller still MUST check, t 148 * HEADER. But caller still MUST check, that cmsg->cmsg_len is
150 * inside range, given by msg->msg_contro 149 * inside range, given by msg->msg_controllen before using
151 * ancillary object DATA. 150 * ancillary object DATA. --ANK (980731)
152 */ 151 */
153 152
154 static inline struct cmsghdr * __cmsg_nxthdr(v 153 static inline struct cmsghdr * __cmsg_nxthdr(void *__ctl, __kernel_size_t __size,
155 154 struct cmsghdr *__cmsg)
156 { 155 {
157 struct cmsghdr * __ptr; 156 struct cmsghdr * __ptr;
158 157
159 __ptr = (struct cmsghdr*)(((unsigned c 158 __ptr = (struct cmsghdr*)(((unsigned char *) __cmsg) + CMSG_ALIGN(__cmsg->cmsg_len));
160 if ((unsigned long)((char*)(__ptr+1) - 159 if ((unsigned long)((char*)(__ptr+1) - (char *) __ctl) > __size)
161 return (struct cmsghdr *)0; 160 return (struct cmsghdr *)0;
162 161
163 return __ptr; 162 return __ptr;
164 } 163 }
165 164
166 static inline struct cmsghdr * cmsg_nxthdr (st 165 static inline struct cmsghdr * cmsg_nxthdr (struct msghdr *__msg, struct cmsghdr *__cmsg)
167 { 166 {
168 return __cmsg_nxthdr(__msg->msg_contro 167 return __cmsg_nxthdr(__msg->msg_control, __msg->msg_controllen, __cmsg);
169 } 168 }
170 169
171 static inline size_t msg_data_left(struct msgh 170 static inline size_t msg_data_left(struct msghdr *msg)
172 { 171 {
173 return iov_iter_count(&msg->msg_iter); 172 return iov_iter_count(&msg->msg_iter);
174 } 173 }
175 174
176 /* "Socket"-level control message types: */ 175 /* "Socket"-level control message types: */
177 176
178 #define SCM_RIGHTS 0x01 /* rw: 177 #define SCM_RIGHTS 0x01 /* rw: access rights (array of int) */
179 #define SCM_CREDENTIALS 0x02 /* rw: 178 #define SCM_CREDENTIALS 0x02 /* rw: struct ucred */
180 #define SCM_SECURITY 0x03 /* rw: 179 #define SCM_SECURITY 0x03 /* rw: security label */
181 #define SCM_PIDFD 0x04 /* ro: <<
182 180
183 struct ucred { 181 struct ucred {
184 __u32 pid; 182 __u32 pid;
185 __u32 uid; 183 __u32 uid;
186 __u32 gid; 184 __u32 gid;
187 }; 185 };
188 186
189 /* Supported address families. */ 187 /* Supported address families. */
190 #define AF_UNSPEC 0 188 #define AF_UNSPEC 0
191 #define AF_UNIX 1 /* Unix domain 189 #define AF_UNIX 1 /* Unix domain sockets */
192 #define AF_LOCAL 1 /* POSIX name 190 #define AF_LOCAL 1 /* POSIX name for AF_UNIX */
193 #define AF_INET 2 /* Internet IP 191 #define AF_INET 2 /* Internet IP Protocol */
194 #define AF_AX25 3 /* Amateur Rad 192 #define AF_AX25 3 /* Amateur Radio AX.25 */
195 #define AF_IPX 4 /* Novell IPX 193 #define AF_IPX 4 /* Novell IPX */
196 #define AF_APPLETALK 5 /* AppleTalk D 194 #define AF_APPLETALK 5 /* AppleTalk DDP */
197 #define AF_NETROM 6 /* Amateur Rad 195 #define AF_NETROM 6 /* Amateur Radio NET/ROM */
198 #define AF_BRIDGE 7 /* Multiprotoc 196 #define AF_BRIDGE 7 /* Multiprotocol bridge */
199 #define AF_ATMPVC 8 /* ATM PVCs 197 #define AF_ATMPVC 8 /* ATM PVCs */
200 #define AF_X25 9 /* Reserved fo 198 #define AF_X25 9 /* Reserved for X.25 project */
201 #define AF_INET6 10 /* IP version 199 #define AF_INET6 10 /* IP version 6 */
202 #define AF_ROSE 11 /* Amateur Rad 200 #define AF_ROSE 11 /* Amateur Radio X.25 PLP */
203 #define AF_DECnet 12 /* Reserved fo 201 #define AF_DECnet 12 /* Reserved for DECnet project */
204 #define AF_NETBEUI 13 /* Reserved fo 202 #define AF_NETBEUI 13 /* Reserved for 802.2LLC project*/
205 #define AF_SECURITY 14 /* Security ca 203 #define AF_SECURITY 14 /* Security callback pseudo AF */
206 #define AF_KEY 15 /* PF_KEY key 204 #define AF_KEY 15 /* PF_KEY key management API */
207 #define AF_NETLINK 16 205 #define AF_NETLINK 16
208 #define AF_ROUTE AF_NETLINK /* Alias to 206 #define AF_ROUTE AF_NETLINK /* Alias to emulate 4.4BSD */
209 #define AF_PACKET 17 /* Packet fami 207 #define AF_PACKET 17 /* Packet family */
210 #define AF_ASH 18 /* Ash 208 #define AF_ASH 18 /* Ash */
211 #define AF_ECONET 19 /* Acorn Econe 209 #define AF_ECONET 19 /* Acorn Econet */
212 #define AF_ATMSVC 20 /* ATM SVCs 210 #define AF_ATMSVC 20 /* ATM SVCs */
213 #define AF_RDS 21 /* RDS sockets 211 #define AF_RDS 21 /* RDS sockets */
214 #define AF_SNA 22 /* Linux SNA P 212 #define AF_SNA 22 /* Linux SNA Project (nutters!) */
215 #define AF_IRDA 23 /* IRDA socket 213 #define AF_IRDA 23 /* IRDA sockets */
216 #define AF_PPPOX 24 /* PPPoX socke 214 #define AF_PPPOX 24 /* PPPoX sockets */
217 #define AF_WANPIPE 25 /* Wanpipe API 215 #define AF_WANPIPE 25 /* Wanpipe API Sockets */
218 #define AF_LLC 26 /* Linux LLC 216 #define AF_LLC 26 /* Linux LLC */
219 #define AF_IB 27 /* Native Infi 217 #define AF_IB 27 /* Native InfiniBand address */
220 #define AF_MPLS 28 /* MPLS */ 218 #define AF_MPLS 28 /* MPLS */
221 #define AF_CAN 29 /* Controller 219 #define AF_CAN 29 /* Controller Area Network */
222 #define AF_TIPC 30 /* TIPC socket 220 #define AF_TIPC 30 /* TIPC sockets */
223 #define AF_BLUETOOTH 31 /* Bluetooth s 221 #define AF_BLUETOOTH 31 /* Bluetooth sockets */
224 #define AF_IUCV 32 /* IUCV socket 222 #define AF_IUCV 32 /* IUCV sockets */
225 #define AF_RXRPC 33 /* RxRPC socke 223 #define AF_RXRPC 33 /* RxRPC sockets */
226 #define AF_ISDN 34 /* mISDN socke 224 #define AF_ISDN 34 /* mISDN sockets */
227 #define AF_PHONET 35 /* Phonet sock 225 #define AF_PHONET 35 /* Phonet sockets */
228 #define AF_IEEE802154 36 /* IEEE802154 226 #define AF_IEEE802154 36 /* IEEE802154 sockets */
229 #define AF_CAIF 37 /* CAIF socket 227 #define AF_CAIF 37 /* CAIF sockets */
230 #define AF_ALG 38 /* Algorithm s 228 #define AF_ALG 38 /* Algorithm sockets */
231 #define AF_NFC 39 /* NFC sockets 229 #define AF_NFC 39 /* NFC sockets */
232 #define AF_VSOCK 40 /* vSockets 230 #define AF_VSOCK 40 /* vSockets */
233 #define AF_KCM 41 /* Kernel Conn 231 #define AF_KCM 41 /* Kernel Connection Multiplexor*/
234 #define AF_QIPCRTR 42 /* Qualcomm IP 232 #define AF_QIPCRTR 42 /* Qualcomm IPC Router */
235 #define AF_SMC 43 /* smc sockets 233 #define AF_SMC 43 /* smc sockets: reserve number for
236 * PF_SMC prot 234 * PF_SMC protocol family that
237 * reuses AF_I 235 * reuses AF_INET address family
238 */ 236 */
239 #define AF_XDP 44 /* XDP sockets 237 #define AF_XDP 44 /* XDP sockets */
240 #define AF_MCTP 45 /* Management 238 #define AF_MCTP 45 /* Management component
241 * transport p 239 * transport protocol
242 */ 240 */
243 241
244 #define AF_MAX 46 /* For now.. * 242 #define AF_MAX 46 /* For now.. */
245 243
246 /* Protocol families, same as address families 244 /* Protocol families, same as address families. */
247 #define PF_UNSPEC AF_UNSPEC 245 #define PF_UNSPEC AF_UNSPEC
248 #define PF_UNIX AF_UNIX 246 #define PF_UNIX AF_UNIX
249 #define PF_LOCAL AF_LOCAL 247 #define PF_LOCAL AF_LOCAL
250 #define PF_INET AF_INET 248 #define PF_INET AF_INET
251 #define PF_AX25 AF_AX25 249 #define PF_AX25 AF_AX25
252 #define PF_IPX AF_IPX 250 #define PF_IPX AF_IPX
253 #define PF_APPLETALK AF_APPLETALK 251 #define PF_APPLETALK AF_APPLETALK
254 #define PF_NETROM AF_NETROM 252 #define PF_NETROM AF_NETROM
255 #define PF_BRIDGE AF_BRIDGE 253 #define PF_BRIDGE AF_BRIDGE
256 #define PF_ATMPVC AF_ATMPVC 254 #define PF_ATMPVC AF_ATMPVC
257 #define PF_X25 AF_X25 255 #define PF_X25 AF_X25
258 #define PF_INET6 AF_INET6 256 #define PF_INET6 AF_INET6
259 #define PF_ROSE AF_ROSE 257 #define PF_ROSE AF_ROSE
260 #define PF_DECnet AF_DECnet 258 #define PF_DECnet AF_DECnet
261 #define PF_NETBEUI AF_NETBEUI 259 #define PF_NETBEUI AF_NETBEUI
262 #define PF_SECURITY AF_SECURITY 260 #define PF_SECURITY AF_SECURITY
263 #define PF_KEY AF_KEY 261 #define PF_KEY AF_KEY
264 #define PF_NETLINK AF_NETLINK 262 #define PF_NETLINK AF_NETLINK
265 #define PF_ROUTE AF_ROUTE 263 #define PF_ROUTE AF_ROUTE
266 #define PF_PACKET AF_PACKET 264 #define PF_PACKET AF_PACKET
267 #define PF_ASH AF_ASH 265 #define PF_ASH AF_ASH
268 #define PF_ECONET AF_ECONET 266 #define PF_ECONET AF_ECONET
269 #define PF_ATMSVC AF_ATMSVC 267 #define PF_ATMSVC AF_ATMSVC
270 #define PF_RDS AF_RDS 268 #define PF_RDS AF_RDS
271 #define PF_SNA AF_SNA 269 #define PF_SNA AF_SNA
272 #define PF_IRDA AF_IRDA 270 #define PF_IRDA AF_IRDA
273 #define PF_PPPOX AF_PPPOX 271 #define PF_PPPOX AF_PPPOX
274 #define PF_WANPIPE AF_WANPIPE 272 #define PF_WANPIPE AF_WANPIPE
275 #define PF_LLC AF_LLC 273 #define PF_LLC AF_LLC
276 #define PF_IB AF_IB 274 #define PF_IB AF_IB
277 #define PF_MPLS AF_MPLS 275 #define PF_MPLS AF_MPLS
278 #define PF_CAN AF_CAN 276 #define PF_CAN AF_CAN
279 #define PF_TIPC AF_TIPC 277 #define PF_TIPC AF_TIPC
280 #define PF_BLUETOOTH AF_BLUETOOTH 278 #define PF_BLUETOOTH AF_BLUETOOTH
281 #define PF_IUCV AF_IUCV 279 #define PF_IUCV AF_IUCV
282 #define PF_RXRPC AF_RXRPC 280 #define PF_RXRPC AF_RXRPC
283 #define PF_ISDN AF_ISDN 281 #define PF_ISDN AF_ISDN
284 #define PF_PHONET AF_PHONET 282 #define PF_PHONET AF_PHONET
285 #define PF_IEEE802154 AF_IEEE802154 283 #define PF_IEEE802154 AF_IEEE802154
286 #define PF_CAIF AF_CAIF 284 #define PF_CAIF AF_CAIF
287 #define PF_ALG AF_ALG 285 #define PF_ALG AF_ALG
288 #define PF_NFC AF_NFC 286 #define PF_NFC AF_NFC
289 #define PF_VSOCK AF_VSOCK 287 #define PF_VSOCK AF_VSOCK
290 #define PF_KCM AF_KCM 288 #define PF_KCM AF_KCM
291 #define PF_QIPCRTR AF_QIPCRTR 289 #define PF_QIPCRTR AF_QIPCRTR
292 #define PF_SMC AF_SMC 290 #define PF_SMC AF_SMC
293 #define PF_XDP AF_XDP 291 #define PF_XDP AF_XDP
294 #define PF_MCTP AF_MCTP 292 #define PF_MCTP AF_MCTP
295 #define PF_MAX AF_MAX 293 #define PF_MAX AF_MAX
296 294
297 /* Maximum queue length specifiable by listen. 295 /* Maximum queue length specifiable by listen. */
298 #define SOMAXCONN 4096 296 #define SOMAXCONN 4096
299 297
300 /* Flags we can use with send/ and recv. 298 /* Flags we can use with send/ and recv.
301 Added those for 1003.1g not all are support 299 Added those for 1003.1g not all are supported yet
302 */ 300 */
303 301
304 #define MSG_OOB 1 302 #define MSG_OOB 1
305 #define MSG_PEEK 2 303 #define MSG_PEEK 2
306 #define MSG_DONTROUTE 4 304 #define MSG_DONTROUTE 4
307 #define MSG_TRYHARD 4 /* Synonym for 305 #define MSG_TRYHARD 4 /* Synonym for MSG_DONTROUTE for DECnet */
308 #define MSG_CTRUNC 8 306 #define MSG_CTRUNC 8
309 #define MSG_PROBE 0x10 /* Do not send 307 #define MSG_PROBE 0x10 /* Do not send. Only probe path f.e. for MTU */
310 #define MSG_TRUNC 0x20 308 #define MSG_TRUNC 0x20
311 #define MSG_DONTWAIT 0x40 /* Nonblocking 309 #define MSG_DONTWAIT 0x40 /* Nonblocking io */
312 #define MSG_EOR 0x80 /* End of reco 310 #define MSG_EOR 0x80 /* End of record */
313 #define MSG_WAITALL 0x100 /* Wait for a 311 #define MSG_WAITALL 0x100 /* Wait for a full request */
314 #define MSG_FIN 0x200 312 #define MSG_FIN 0x200
315 #define MSG_SYN 0x400 313 #define MSG_SYN 0x400
316 #define MSG_CONFIRM 0x800 /* Confirm pat 314 #define MSG_CONFIRM 0x800 /* Confirm path validity */
317 #define MSG_RST 0x1000 315 #define MSG_RST 0x1000
318 #define MSG_ERRQUEUE 0x2000 /* Fetch messa 316 #define MSG_ERRQUEUE 0x2000 /* Fetch message from error queue */
319 #define MSG_NOSIGNAL 0x4000 /* Do not gene 317 #define MSG_NOSIGNAL 0x4000 /* Do not generate SIGPIPE */
320 #define MSG_MORE 0x8000 /* Sender will 318 #define MSG_MORE 0x8000 /* Sender will send more */
321 #define MSG_WAITFORONE 0x10000 /* recvmmsg(): 319 #define MSG_WAITFORONE 0x10000 /* recvmmsg(): block until 1+ packets avail */
322 #define MSG_SENDPAGE_NOPOLICY 0x10000 /* sendp 320 #define MSG_SENDPAGE_NOPOLICY 0x10000 /* sendpage() internal : do no apply policy */
>> 321 #define MSG_SENDPAGE_NOTLAST 0x20000 /* sendpage() internal : not the last page */
323 #define MSG_BATCH 0x40000 /* sendmmsg(): 322 #define MSG_BATCH 0x40000 /* sendmmsg(): more messages coming */
324 #define MSG_EOF MSG_FIN 323 #define MSG_EOF MSG_FIN
325 #define MSG_NO_SHARED_FRAGS 0x80000 /* sendpag 324 #define MSG_NO_SHARED_FRAGS 0x80000 /* sendpage() internal : page frags are not shared */
326 #define MSG_SENDPAGE_DECRYPTED 0x100000 /* se 325 #define MSG_SENDPAGE_DECRYPTED 0x100000 /* sendpage() internal : page may carry
327 * pl 326 * plain text and require encryption
328 */ 327 */
329 328
330 #define MSG_SOCK_DEVMEM 0x2000000 /* Rec <<
331 #define MSG_ZEROCOPY 0x4000000 /* Use 329 #define MSG_ZEROCOPY 0x4000000 /* Use user data in kernel path */
332 #define MSG_SPLICE_PAGES 0x8000000 /* Spl 330 #define MSG_SPLICE_PAGES 0x8000000 /* Splice the pages from the iterator in sendmsg() */
333 #define MSG_FASTOPEN 0x20000000 /* Sen 331 #define MSG_FASTOPEN 0x20000000 /* Send data in TCP SYN */
334 #define MSG_CMSG_CLOEXEC 0x40000000 /* Set 332 #define MSG_CMSG_CLOEXEC 0x40000000 /* Set close_on_exec for file
335 des 333 descriptor received through
336 SCM 334 SCM_RIGHTS */
337 #if defined(CONFIG_COMPAT) 335 #if defined(CONFIG_COMPAT)
338 #define MSG_CMSG_COMPAT 0x80000000 /* Thi 336 #define MSG_CMSG_COMPAT 0x80000000 /* This message needs 32 bit fixups */
339 #else 337 #else
340 #define MSG_CMSG_COMPAT 0 /* We 338 #define MSG_CMSG_COMPAT 0 /* We never have 32 bit fixups */
341 #endif 339 #endif
342 340
343 /* Flags to be cleared on entry by sendmsg and 341 /* Flags to be cleared on entry by sendmsg and sendmmsg syscalls */
344 #define MSG_INTERNAL_SENDMSG_FLAGS \ !! 342 #define MSG_INTERNAL_SENDMSG_FLAGS (MSG_SPLICE_PAGES)
345 (MSG_SPLICE_PAGES | MSG_SENDPAGE_NOPOL <<
346 343
347 /* Setsockoptions(2) level. Thanks to BSD thes 344 /* Setsockoptions(2) level. Thanks to BSD these must match IPPROTO_xxx */
348 #define SOL_IP 0 345 #define SOL_IP 0
349 /* #define SOL_ICMP 1 No-no-no! Due 346 /* #define SOL_ICMP 1 No-no-no! Due to Linux :-) we cannot use SOL_ICMP=1 */
350 #define SOL_TCP 6 347 #define SOL_TCP 6
351 #define SOL_UDP 17 348 #define SOL_UDP 17
352 #define SOL_IPV6 41 349 #define SOL_IPV6 41
353 #define SOL_ICMPV6 58 350 #define SOL_ICMPV6 58
354 #define SOL_SCTP 132 351 #define SOL_SCTP 132
355 #define SOL_UDPLITE 136 /* UDP-Lite (R 352 #define SOL_UDPLITE 136 /* UDP-Lite (RFC 3828) */
356 #define SOL_RAW 255 353 #define SOL_RAW 255
357 #define SOL_IPX 256 354 #define SOL_IPX 256
358 #define SOL_AX25 257 355 #define SOL_AX25 257
359 #define SOL_ATALK 258 356 #define SOL_ATALK 258
360 #define SOL_NETROM 259 357 #define SOL_NETROM 259
361 #define SOL_ROSE 260 358 #define SOL_ROSE 260
362 #define SOL_DECNET 261 359 #define SOL_DECNET 261
363 #define SOL_X25 262 360 #define SOL_X25 262
364 #define SOL_PACKET 263 361 #define SOL_PACKET 263
365 #define SOL_ATM 264 /* ATM layer ( 362 #define SOL_ATM 264 /* ATM layer (cell level) */
366 #define SOL_AAL 265 /* ATM Adaptio 363 #define SOL_AAL 265 /* ATM Adaption Layer (packet level) */
367 #define SOL_IRDA 266 364 #define SOL_IRDA 266
368 #define SOL_NETBEUI 267 365 #define SOL_NETBEUI 267
369 #define SOL_LLC 268 366 #define SOL_LLC 268
370 #define SOL_DCCP 269 367 #define SOL_DCCP 269
371 #define SOL_NETLINK 270 368 #define SOL_NETLINK 270
372 #define SOL_TIPC 271 369 #define SOL_TIPC 271
373 #define SOL_RXRPC 272 370 #define SOL_RXRPC 272
374 #define SOL_PPPOL2TP 273 371 #define SOL_PPPOL2TP 273
375 #define SOL_BLUETOOTH 274 372 #define SOL_BLUETOOTH 274
376 #define SOL_PNPIPE 275 373 #define SOL_PNPIPE 275
377 #define SOL_RDS 276 374 #define SOL_RDS 276
378 #define SOL_IUCV 277 375 #define SOL_IUCV 277
379 #define SOL_CAIF 278 376 #define SOL_CAIF 278
380 #define SOL_ALG 279 377 #define SOL_ALG 279
381 #define SOL_NFC 280 378 #define SOL_NFC 280
382 #define SOL_KCM 281 379 #define SOL_KCM 281
383 #define SOL_TLS 282 380 #define SOL_TLS 282
384 #define SOL_XDP 283 381 #define SOL_XDP 283
385 #define SOL_MPTCP 284 382 #define SOL_MPTCP 284
386 #define SOL_MCTP 285 383 #define SOL_MCTP 285
387 #define SOL_SMC 286 384 #define SOL_SMC 286
388 #define SOL_VSOCK 287 385 #define SOL_VSOCK 287
389 386
390 /* IPX options */ 387 /* IPX options */
391 #define IPX_TYPE 1 388 #define IPX_TYPE 1
392 389
393 extern int move_addr_to_kernel(void __user *ua 390 extern int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr_storage *kaddr);
394 extern int put_cmsg(struct msghdr*, int level, 391 extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data);
395 392
396 struct timespec64; 393 struct timespec64;
397 struct __kernel_timespec; 394 struct __kernel_timespec;
398 struct old_timespec32; 395 struct old_timespec32;
399 396
400 struct scm_timestamping_internal { 397 struct scm_timestamping_internal {
401 struct timespec64 ts[3]; 398 struct timespec64 ts[3];
402 }; 399 };
403 400
404 extern void put_cmsg_scm_timestamping64(struct 401 extern void put_cmsg_scm_timestamping64(struct msghdr *msg, struct scm_timestamping_internal *tss);
405 extern void put_cmsg_scm_timestamping(struct m 402 extern void put_cmsg_scm_timestamping(struct msghdr *msg, struct scm_timestamping_internal *tss);
406 403
407 /* The __sys_...msg variants allow MSG_CMSG_CO 404 /* The __sys_...msg variants allow MSG_CMSG_COMPAT iff
408 * forbid_cmsg_compat==false 405 * forbid_cmsg_compat==false
409 */ 406 */
410 extern long __sys_recvmsg(int fd, struct user_ 407 extern long __sys_recvmsg(int fd, struct user_msghdr __user *msg,
411 unsigned int flags, 408 unsigned int flags, bool forbid_cmsg_compat);
412 extern long __sys_sendmsg(int fd, struct user_ 409 extern long __sys_sendmsg(int fd, struct user_msghdr __user *msg,
413 unsigned int flags, 410 unsigned int flags, bool forbid_cmsg_compat);
414 extern int __sys_recvmmsg(int fd, struct mmsgh 411 extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg,
415 unsigned int vlen, u 412 unsigned int vlen, unsigned int flags,
416 struct __kernel_time 413 struct __kernel_timespec __user *timeout,
417 struct old_timespec3 414 struct old_timespec32 __user *timeout32);
418 extern int __sys_sendmmsg(int fd, struct mmsgh 415 extern int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg,
419 unsigned int vlen, u 416 unsigned int vlen, unsigned int flags,
420 bool forbid_cmsg_com 417 bool forbid_cmsg_compat);
421 extern long __sys_sendmsg_sock(struct socket * 418 extern long __sys_sendmsg_sock(struct socket *sock, struct msghdr *msg,
422 unsigned int fl 419 unsigned int flags);
423 extern long __sys_recvmsg_sock(struct socket * 420 extern long __sys_recvmsg_sock(struct socket *sock, struct msghdr *msg,
424 struct user_msg 421 struct user_msghdr __user *umsg,
425 struct sockaddr 422 struct sockaddr __user *uaddr,
426 unsigned int fl 423 unsigned int flags);
>> 424 extern int sendmsg_copy_msghdr(struct msghdr *msg,
>> 425 struct user_msghdr __user *umsg, unsigned flags,
>> 426 struct iovec **iov);
>> 427 extern int recvmsg_copy_msghdr(struct msghdr *msg,
>> 428 struct user_msghdr __user *umsg, unsigned flags,
>> 429 struct sockaddr __user **uaddr,
>> 430 struct iovec **iov);
427 extern int __copy_msghdr(struct msghdr *kmsg, 431 extern int __copy_msghdr(struct msghdr *kmsg,
428 struct user_msghdr *u 432 struct user_msghdr *umsg,
429 struct sockaddr __use 433 struct sockaddr __user **save_addr);
430 434
431 /* helpers which do the actual work for syscal 435 /* helpers which do the actual work for syscalls */
432 extern int __sys_recvfrom(int fd, void __user 436 extern int __sys_recvfrom(int fd, void __user *ubuf, size_t size,
433 unsigned int flags, 437 unsigned int flags, struct sockaddr __user *addr,
434 int __user *addr_len 438 int __user *addr_len);
435 extern int __sys_sendto(int fd, void __user *b 439 extern int __sys_sendto(int fd, void __user *buff, size_t len,
436 unsigned int flags, st 440 unsigned int flags, struct sockaddr __user *addr,
437 int addr_len); 441 int addr_len);
438 extern struct file *do_accept(struct file *fil !! 442 extern struct file *do_accept(struct file *file, unsigned file_flags,
439 struct sockaddr 443 struct sockaddr __user *upeer_sockaddr,
440 int __user *upee 444 int __user *upeer_addrlen, int flags);
441 extern int __sys_accept4(int fd, struct sockad 445 extern int __sys_accept4(int fd, struct sockaddr __user *upeer_sockaddr,
442 int __user *upeer_add 446 int __user *upeer_addrlen, int flags);
443 extern int __sys_socket(int family, int type, 447 extern int __sys_socket(int family, int type, int protocol);
444 extern struct file *__sys_socket_file(int fami 448 extern struct file *__sys_socket_file(int family, int type, int protocol);
445 extern int __sys_bind(int fd, struct sockaddr 449 extern int __sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen);
446 extern int __sys_bind_socket(struct socket *so <<
447 int addrlen); <<
448 extern int __sys_connect_file(struct file *fil 450 extern int __sys_connect_file(struct file *file, struct sockaddr_storage *addr,
449 int addrlen, int 451 int addrlen, int file_flags);
450 extern int __sys_connect(int fd, struct sockad 452 extern int __sys_connect(int fd, struct sockaddr __user *uservaddr,
451 int addrlen); 453 int addrlen);
452 extern int __sys_listen(int fd, int backlog); 454 extern int __sys_listen(int fd, int backlog);
453 extern int __sys_listen_socket(struct socket * <<
454 extern int __sys_getsockname(int fd, struct so 455 extern int __sys_getsockname(int fd, struct sockaddr __user *usockaddr,
455 int __user *usock 456 int __user *usockaddr_len);
456 extern int __sys_getpeername(int fd, struct so 457 extern int __sys_getpeername(int fd, struct sockaddr __user *usockaddr,
457 int __user *usock 458 int __user *usockaddr_len);
458 extern int __sys_socketpair(int family, int ty 459 extern int __sys_socketpair(int family, int type, int protocol,
459 int __user *usockv 460 int __user *usockvec);
460 extern int __sys_shutdown_sock(struct socket * 461 extern int __sys_shutdown_sock(struct socket *sock, int how);
461 extern int __sys_shutdown(int fd, int how); 462 extern int __sys_shutdown(int fd, int how);
462 #endif /* _LINUX_SOCKET_H */ 463 #endif /* _LINUX_SOCKET_H */
463 464
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