#ifndef NET_COMPAT_H#define NET_COMPAT_H  struct sock; #if defined(CONFIG_COMPAT) #include <linux/compat.h> struct compat_msghdr {	compat_uptr_t	msg_name;	/* void * */	compat_int_t	msg_namelen;	compat_uptr_t	msg_iov;	/* struct compat_iovec * */	compat_size_t	msg_iovlen;	compat_uptr_t	msg_control;	/* void * */	compat_size_t	msg_controllen;	compat_uint_t	msg_flags;}; struct compat_mmsghdr {	struct compat_msghdr msg_hdr;	compat_uint_t        msg_len;}; struct compat_cmsghdr {	compat_size_t	cmsg_len;	compat_int_t	cmsg_level;	compat_int_t	cmsg_type;}; extern int compat_sock_get_timestamp(struct sock *, struct timeval __user *);extern int compat_sock_get_timestampns(struct sock *, struct timespec __user *); #else /* defined(CONFIG_COMPAT) *//* * To avoid compiler warnings: */#define compat_msghdr	msghdr#define compat_mmsghdr	mmsghdr#endif /* defined(CONFIG_COMPAT) */ extern int get_compat_msghdr(struct msghdr *, struct compat_msghdr __user *);extern int verify_compat_iovec(struct msghdr *, struct iovec *, struct sockaddr *, int);extern asmlinkage long compat_sys_sendmsg(int,struct compat_msghdr __user *,unsigned);extern asmlinkage long compat_sys_sendmmsg(int, struct compat_mmsghdr __user *,					   unsigned, unsigned);extern asmlinkage long compat_sys_recvmsg(int,struct compat_msghdr __user *,unsigned);extern asmlinkage long compat_sys_recvmmsg(int, struct compat_mmsghdr __user *,					   unsigned, unsigned,					   struct compat_timespec __user *);extern asmlinkage long compat_sys_getsockopt(int, int, int, char __user *, int __user *);extern int put_cmsg_compat(struct msghdr*, int, int, int, void *); extern int cmsghdr_from_user_compat_to_kern(struct msghdr *, struct sock *, unsigned char *, int); extern int compat_mc_setsockopt(struct sock *, int, int, char __user *, unsigned int,	int (*)(struct sock *, int, int, char __user *, unsigned int));extern int compat_mc_getsockopt(struct sock *, int, int, char __user *,	int __user *, int (*)(struct sock *, int, int, char __user *,				int __user *)); #endif /* NET_COMPAT_H */