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 #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 struct compat_rtentry {
  34         u32             rt_pad1;
  35         struct sockaddr rt_dst;         /* target address               */
  36         struct sockaddr rt_gateway;     /* gateway addr (RTF_GATEWAY)   */
  37         struct sockaddr rt_genmask;     /* target network mask (IP)     */
  38         unsigned short  rt_flags;
  39         short           rt_pad2;
  40         u32             rt_pad3;
  41         unsigned char   rt_tos;
  42         unsigned char   rt_class;
  43         short           rt_pad4;
  44         short           rt_metric;      /* +1 for binary compatibility! */
  45         compat_uptr_t   rt_dev;         /* forcing the device at add    */
  46         u32             rt_mtu;         /* per route MTU/Window         */
  47         u32             rt_window;      /* Window clamping              */
  48         unsigned short  rt_irtt;        /* Initial RTT                  */
  49 };
  50
  51 #else /* defined(CONFIG_COMPAT) */
  52 /*
  53  * To avoid compiler warnings:
  54  */
  55 #define compat_msghdr   msghdr
  56 #define compat_mmsghdr  mmsghdr
  57 #endif /* defined(CONFIG_COMPAT) */
  58
  59 int __get_compat_msghdr(struct msghdr *kmsg, struct compat_msghdr __user *umsg,
  60                         struct sockaddr __user **save_addr, compat_uptr_t *ptr,
  61                         compat_size_t *len);
  62 int get_compat_msghdr(struct msghdr *, struct compat_msghdr __user *,
  63                       struct sockaddr __user **, struct iovec **);
  64 int put_cmsg_compat(struct msghdr*, int, int, int, void *);
  65
  66 int cmsghdr_from_user_compat_to_kern(struct msghdr *, struct sock *,
  67                                      unsigned char *, int);
  68
  69 struct compat_group_req {
  70         __u32                            gr_interface;
  71         struct __kernel_sockaddr_storage gr_group
  72                 __aligned(4);
  73 } __packed;
  74
  75 struct compat_group_source_req {
  76         __u32                            gsr_interface;
  77         struct __kernel_sockaddr_storage gsr_group
  78                 __aligned(4);
  79         struct __kernel_sockaddr_storage gsr_source
  80                 __aligned(4);
  81 } __packed;
  82
  83 struct compat_group_filter {
  84         __u32                            gf_interface;
  85         struct __kernel_sockaddr_storage gf_group
  86                 __aligned(4);
  87         __u32                            gf_fmode;
  88         __u32                            gf_numsrc;
  89         struct __kernel_sockaddr_storage gf_slist[1]
  90                 __aligned(4);
  91 } __packed;
  92
  93 #endif /* NET_COMPAT_H */