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authorWill Drewry <wad@chromium.org>2012-04-12 16:47:53 -0500
committerJames Morris <james.l.morris@oracle.com>2012-04-14 11:13:19 +1000
commit0c5fe1b4221c6701224c2601cf3c692e5721103e (patch)
tree6b90e50a543b559199c3cea4c104931d605d6eeb
parent46b325c7eb01482674406701825ff67f561ccdd4 (diff)
net/compat.c,linux/filter.h: share compat_sock_fprog
Any other users of bpf_*_filter that take a struct sock_fprog from userspace will need to be able to also accept a compat_sock_fprog if the arch supports compat calls. This change allows the existing compat_sock_fprog be shared. Signed-off-by: Will Drewry <wad@chromium.org> Acked-by: Serge Hallyn <serge.hallyn@canonical.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Eric Paris <eparis@redhat.com> v18: tasered by the apostrophe police v14: rebase/nochanges v13: rebase on to 88ebdda6159ffc15699f204c33feb3e431bf9bdc v12: rebase on to linux-next v11: introduction Signed-off-by: James Morris <james.l.morris@oracle.com>
-rw-r--r--include/linux/filter.h11
-rw-r--r--net/compat.c8
2 files changed, 11 insertions, 8 deletions
diff --git a/include/linux/filter.h b/include/linux/filter.h
index aaa2e80630b8..f2e53152e835 100644
--- a/include/linux/filter.h
+++ b/include/linux/filter.h
@@ -10,6 +10,7 @@
#ifdef __KERNEL__
#include <linux/atomic.h>
+#include <linux/compat.h>
#endif
/*
@@ -132,6 +133,16 @@ struct sock_fprog { /* Required for SO_ATTACH_FILTER. */
#ifdef __KERNEL__
+#ifdef CONFIG_COMPAT
+/*
+ * A struct sock_filter is architecture independent.
+ */
+struct compat_sock_fprog {
+ u16 len;
+ compat_uptr_t filter; /* struct sock_filter * */
+};
+#endif
+
struct sk_buff;
struct sock;
diff --git a/net/compat.c b/net/compat.c
index e055708b8ec9..242c828810ff 100644
--- a/net/compat.c
+++ b/net/compat.c
@@ -328,14 +328,6 @@ void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm)
__scm_destroy(scm);
}
-/*
- * A struct sock_filter is architecture independent.
- */
-struct compat_sock_fprog {
- u16 len;
- compat_uptr_t filter; /* struct sock_filter * */
-};
-
static int do_set_attach_filter(struct socket *sock, int level, int optname,
char __user *optval, unsigned int optlen)
{