include/net/compat.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef NET_COMPAT_H
   3 #define NET_COMPAT_H
   4
   5
   6 struct sock;
   7
   8 #include <linux/compat.h>
   9
  10 struct compat_msghdr {
  11         compat_uptr_t   msg_name;       /* void * */
  12         compat_int_t    msg_namelen;
  13         compat_uptr_t   msg_iov;        /* struct compat_iovec * */
  14         compat_size_t   msg_iovlen;
  15         compat_uptr_t   msg_control;    /* void * */
  16         compat_size_t   msg_controllen;
  17         compat_uint_t   msg_flags;
  18 };
  19
  20 struct compat_mmsghdr {
  21         struct compat_msghdr msg_hdr;
  22         compat_uint_t        msg_len;
  23 };
  24
  25 struct compat_cmsghdr {
  26         compat_size_t   cmsg_len;
  27         compat_int_t    cmsg_level;
  28         compat_int_t    cmsg_type;
  29 };
  30
  31 struct compat_rtentry {
  32         u32             rt_pad1;
  33         struct sockaddr rt_dst;         /* target address               */
  34         struct sockaddr rt_gateway;     /* gateway addr (RTF_GATEWAY)   */
  35         struct sockaddr rt_genmask;     /* target network mask (IP)     */
  36         unsigned short  rt_flags;
  37         short           rt_pad2;
  38         u32             rt_pad3;
  39         unsigned char   rt_tos;
  40         unsigned char   rt_class;
  41         short           rt_pad4;
  42         short           rt_metric;      /* +1 for binary compatibility! */
  43         compat_uptr_t   rt_dev;         /* forcing the device at add    */
  44         u32             rt_mtu;         /* per route MTU/Window         */
  45         u32             rt_window;      /* Window clamping              */
  46         unsigned short  rt_irtt;        /* Initial RTT                  */
  47 };
  48
  49 int __get_compat_msghdr(struct msghdr *kmsg, struct compat_msghdr __user *umsg,
  50                         struct sockaddr __user **save_addr, compat_uptr_t *ptr,
  51                         compat_size_t *len);
  52 int get_compat_msghdr(struct msghdr *, struct compat_msghdr __user *,
  53                       struct sockaddr __user **, struct iovec **);
  54 int put_cmsg_compat(struct msghdr*, int, int, int, void *);
  55
  56 int cmsghdr_from_user_compat_to_kern(struct msghdr *, struct sock *,
  57                                      unsigned char *, int);
  58
  59 struct compat_group_req {
  60         __u32                            gr_interface;
  61         struct __kernel_sockaddr_storage gr_group
  62                 __aligned(4);
  63 } __packed;
  64
  65 struct compat_group_source_req {
  66         __u32                            gsr_interface;
  67         struct __kernel_sockaddr_storage gsr_group
  68                 __aligned(4);
  69         struct __kernel_sockaddr_storage gsr_source
  70                 __aligned(4);
  71 } __packed;
  72
  73 struct compat_group_filter {
  74         union {
  75                 struct {
  76                         __u32                            gf_interface_aux;
  77                         struct __kernel_sockaddr_storage gf_group_aux
  78                                 __aligned(4);
  79                         __u32                            gf_fmode_aux;
  80                         __u32                            gf_numsrc_aux;
  81                         struct __kernel_sockaddr_storage gf_slist[1]
  82                                 __aligned(4);
  83                 } __packed;
  84                 struct {
  85                         __u32                            gf_interface;
  86                         struct __kernel_sockaddr_storage gf_group
  87                                 __aligned(4);
  88                         __u32                            gf_fmode;
  89                         __u32                            gf_numsrc;
  90                         struct __kernel_sockaddr_storage gf_slist_flex[]
  91                                 __aligned(4);
  92                 } __packed;
  93         };
  94 } __packed;
  95
  96 #endif /* NET_COMPAT_H */