root/include/net/compat.h

INCLUDED FROM

   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 #else /* defined(CONFIG_COMPAT) */
  34 /*
  35  * To avoid compiler warnings:
  36  */
  37 #define compat_msghdr   msghdr
  38 #define compat_mmsghdr  mmsghdr
  39 #endif /* defined(CONFIG_COMPAT) */
  40 
  41 int get_compat_msghdr(struct msghdr *, struct compat_msghdr __user *,
  42                       struct sockaddr __user **, struct iovec **);
  43 struct sock_fprog __user *get_compat_bpf_fprog(char __user *optval);
  44 int put_cmsg_compat(struct msghdr*, int, int, int, void *);
  45 
  46 int cmsghdr_from_user_compat_to_kern(struct msghdr *, struct sock *,
  47                                      unsigned char *, int);
  48 
  49 int compat_mc_setsockopt(struct sock *, int, int, char __user *, unsigned int,
  50                          int (*)(struct sock *, int, int, char __user *,
  51                                  unsigned int));
  52 int compat_mc_getsockopt(struct sock *, int, int, char __user *, int __user *,
  53                          int (*)(struct sock *, int, int, char __user *,
  54                                  int __user *));
  55 
  56 #endif /* NET_COMPAT_H */