[PATCH 01/19] lift compat definitions of mcast [sg]etsockopt requests into net/compat.h

[Al Viro]

From: Al Viro <v...@zeniv.linux.org.uk>

We want to get rid of compat_mc_[sg]etsockopt() and to have that stuff
handled without compat_alloc_user_space(), extra copying through
userland, etc.  To do that we'll need ipv4 and ipv6 instances of
->compat_[sg]etsockopt() to manipulate the 32bit variants of mcast
requests, so we need to move the definitions of those out of net/compat.c
and into a public header.

This patch just does a mechanical move to include/net/compat.h

Signed-off-by: Al Viro <v...@zeniv.linux.org.uk>
---
 include/net/compat.h | 24 ++++++++++++++++++++++++
 net/compat.c         | 25 -------------------------
 2 files changed, 24 insertions(+), 25 deletions(-)

diff --git a/include/net/compat.h b/include/net/compat.h
index e341260642fe..9f4a56c5671e 100644
--- a/include/net/compat.h
+++ b/include/net/compat.h
@@ -56,4 +56,28 @@ int compat_mc_getsockopt(struct sock *, int, int, char 
__user *, int __user *,
                         int (*)(struct sock *, int, int, char __user *,
                                 int __user *));
 
+struct compat_group_req {
+       __u32                            gr_interface;
+       struct __kernel_sockaddr_storage gr_group
+               __aligned(4);
+} __packed;
+
+struct compat_group_source_req {
+       __u32                            gsr_interface;
+       struct __kernel_sockaddr_storage gsr_group
+               __aligned(4);
+       struct __kernel_sockaddr_storage gsr_source
+               __aligned(4);
+} __packed;
+
+struct compat_group_filter {
+       __u32                            gf_interface;
+       struct __kernel_sockaddr_storage gf_group
+               __aligned(4);
+       __u32                            gf_fmode;
+       __u32                            gf_numsrc;
+       struct __kernel_sockaddr_storage gf_slist[1]
+               __aligned(4);
+} __packed;
+
 #endif /* NET_COMPAT_H */
diff --git a/net/compat.c b/net/compat.c
index 4bed96e84d9a..06af69e7b408 100644
--- a/net/compat.c
+++ b/net/compat.c
@@ -447,34 +447,9 @@ COMPAT_SYSCALL_DEFINE5(getsockopt, int, fd, int, level, 
int, optname,
        return __compat_sys_getsockopt(fd, level, optname, optval, optlen);
 }
 
-struct compat_group_req {
-       __u32                            gr_interface;
-       struct __kernel_sockaddr_storage gr_group
-               __aligned(4);
-} __packed;
-
-struct compat_group_source_req {
-       __u32                            gsr_interface;
-       struct __kernel_sockaddr_storage gsr_group
-               __aligned(4);
-       struct __kernel_sockaddr_storage gsr_source
-               __aligned(4);
-} __packed;
-
-struct compat_group_filter {
-       __u32                            gf_interface;
-       struct __kernel_sockaddr_storage gf_group
-               __aligned(4);
-       __u32                            gf_fmode;
-       __u32                            gf_numsrc;
-       struct __kernel_sockaddr_storage gf_slist[1]
-               __aligned(4);
-} __packed;
-
 #define __COMPAT_GF0_SIZE (sizeof(struct compat_group_filter) - \
                        sizeof(struct __kernel_sockaddr_storage))
 
-
 int compat_mc_setsockopt(struct sock *sock, int level, int optname,
        char __user *optval, unsigned int optlen,
        int (*setsockopt)(struct sock *, int, int, char __user *, unsigned int))
-- 
2.11.0