root/include/net/compat.h

INCLUDED FROM

#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;
};

int compat_sock_get_timestamp(struct sock *, struct timeval __user *);
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) */

int get_compat_msghdr(struct msghdr *, struct compat_msghdr __user *);
int verify_compat_iovec(struct msghdr *, struct iovec *,
                        struct sockaddr_storage *, int);
asmlinkage long compat_sys_sendmsg(int, struct compat_msghdr __user *,
                                   unsigned int);
asmlinkage long compat_sys_sendmmsg(int, struct compat_mmsghdr __user *,
                                    unsigned int, unsigned int);
asmlinkage long compat_sys_recvmsg(int, struct compat_msghdr __user *,
                                   unsigned int);
asmlinkage long compat_sys_recvmmsg(int, struct compat_mmsghdr __user *,
                                    unsigned int, unsigned int,
                                    struct compat_timespec __user *);
asmlinkage long compat_sys_getsockopt(int, int, int, char __user *,
                                      int __user *);
int put_cmsg_compat(struct msghdr*, int, int, int, void *);

int cmsghdr_from_user_compat_to_kern(struct msghdr *, struct sock *,
                                     unsigned char *, int);

int compat_mc_setsockopt(struct sock *, int, int, char __user *, unsigned int,
                         int (*)(struct sock *, int, int, char __user *,
                                 unsigned int));
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 */