[PATCH] common compat_sys_timer_create

The comment in compat.c is wrong, every architecture provides a
get_compat_sigevent() for the IPC compat code already.

This basically moves the x86_64 version to common code and removes all the
others.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Paul Mackerras <paulus@samba.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Acked-by: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 18 insertions, 2 deletions

diff --git a/kernel/compat.c b/kernel/compat.c
index 102296e21ea8..256e5d9f0647 100644
--- a/kernel/compat.c
+++ b/kernel/compat.c
@@ -514,6 +514,24 @@ static int put_compat_itimerspec(struct compat_itimerspec __user *dst,
         return 0;
 } 
 
+long compat_sys_timer_create(clockid_t which_clock,
+                        struct compat_sigevent __user *timer_event_spec,
+                        timer_t __user *created_timer_id)
+{
+        struct sigevent __user *event = NULL;
+
+        if (timer_event_spec) {
+                struct sigevent kevent;
+
+                event = compat_alloc_user_space(sizeof(*event));
+                if (get_compat_sigevent(&kevent, timer_event_spec) ||
+                    copy_to_user(event, &kevent, sizeof(*event)))
+                        return -EFAULT;
+        }
+
+        return sys_timer_create(which_clock, event, created_timer_id);
+}
+
 long compat_sys_timer_settime(timer_t timer_id, int flags,
                           struct compat_itimerspec __user *new, 
                           struct compat_itimerspec __user *old)
@@ -649,8 +667,6 @@ int get_compat_sigevent(struct sigevent *event,
                 ? -EFAULT : 0;
 }
 
-/* timer_create is architecture specific because it needs sigevent conversion */
-
 long compat_get_bitmap(unsigned long *mask, compat_ulong_t __user *umask,
                        unsigned long bitmap_size)
 {