[PATCH] lightweight robust futexes: compat
32-bit syscall compatibility support. (This patch also moves all futex
related compat functionality into kernel/futex_compat.c.)
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Acked-by: Ulrich Drepper <drepper@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/include/linux/compat.h b/include/linux/compat.h
index 24d659c..6d3a654 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -147,6 +147,24 @@
} _sigev_un;
} compat_sigevent_t;
+struct compat_robust_list {
+ compat_uptr_t next;
+};
+
+struct compat_robust_list_head {
+ struct compat_robust_list list;
+ compat_long_t futex_offset;
+ compat_uptr_t list_op_pending;
+};
+
+extern void compat_exit_robust_list(struct task_struct *curr);
+
+asmlinkage long
+compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
+ compat_size_t len);
+asmlinkage long
+compat_sys_get_robust_list(int pid, compat_uptr_t *head_ptr,
+ compat_size_t __user *len_ptr);
long compat_sys_semctl(int first, int second, int third, void __user *uptr);
long compat_sys_msgsnd(int first, int second, int third, void __user *uptr);
diff --git a/include/linux/sched.h b/include/linux/sched.h
index fd4848f..20b4f03 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -874,6 +874,9 @@
int cpuset_mem_spread_rotor;
#endif
struct robust_list_head __user *robust_list;
+#ifdef CONFIG_COMPAT
+ struct compat_robust_list_head __user *compat_robust_list;
+#endif
atomic_t fs_excl; /* holding fs exclusive resources */
struct rcu_head rcu;