1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef NET_COMPAT_H
3 #define NET_COMPAT_H
4 
5 
6 struct sock;
7 
8 #if defined(CONFIG_COMPAT)
9 
10 #include <linux/compat.h>
11 
12 struct compat_msghdr {
13 	compat_uptr_t	msg_name;	/* void * */
14 	compat_int_t	msg_namelen;
15 	compat_uptr_t	msg_iov;	/* struct compat_iovec * */
16 	compat_size_t	msg_iovlen;
17 	compat_uptr_t	msg_control;	/* void * */
18 	compat_size_t	msg_controllen;
19 	compat_uint_t	msg_flags;
20 };
21 
22 struct compat_mmsghdr {
23 	struct compat_msghdr msg_hdr;
24 	compat_uint_t        msg_len;
25 };
26 
27 struct compat_cmsghdr {
28 	compat_size_t	cmsg_len;
29 	compat_int_t	cmsg_level;
30 	compat_int_t	cmsg_type;
31 };
32 
33 int compat_sock_get_timestamp(struct sock *, struct timeval __user *);
34 int compat_sock_get_timestampns(struct sock *, struct timespec __user *);
35 
36 #else /* defined(CONFIG_COMPAT) */
37 /*
38  * To avoid compiler warnings:
39  */
40 #define compat_msghdr	msghdr
41 #define compat_mmsghdr	mmsghdr
42 #endif /* defined(CONFIG_COMPAT) */
43 
44 int get_compat_msghdr(struct msghdr *, struct compat_msghdr __user *,
45 		      struct sockaddr __user **, struct iovec **);
46 struct sock_fprog __user *get_compat_bpf_fprog(char __user *optval);
47 int put_cmsg_compat(struct msghdr*, int, int, int, void *);
48 
49 int cmsghdr_from_user_compat_to_kern(struct msghdr *, struct sock *,
50 				     unsigned char *, int);
51 
52 int compat_mc_setsockopt(struct sock *, int, int, char __user *, unsigned int,
53 			 int (*)(struct sock *, int, int, char __user *,
54 				 unsigned int));
55 int compat_mc_getsockopt(struct sock *, int, int, char __user *, int __user *,
56 			 int (*)(struct sock *, int, int, char __user *,
57 				 int __user *));
58 
59 #endif /* NET_COMPAT_H */
60