compat.h

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#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_storage *, int);
extern asmlinkage long compat_sys_sendmsg(int,struct compat_msghdr __user *,unsigned int);
extern asmlinkage long compat_sys_sendmmsg(int, struct compat_mmsghdr __user *,
                       unsigned int, unsigned int);
extern asmlinkage long compat_sys_recvmsg(int,struct compat_msghdr __user *,unsigned int);
extern asmlinkage long compat_sys_recvmmsg(int, struct compat_mmsghdr __user *,
                       unsigned int, unsigned int,
                       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 */