1 files changed, 8 insertions, 0 deletions

diff --git a/include/linux/compat.h b/include/linux/compat.h
index 7f0c1dd09079..345da00a86e0 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -43,6 +43,7 @@
 #define COMPAT_SYSCALL_DEFINEx(x, name, ...)                            \
         asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
         static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
+        asmlinkage long compat_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__));\
         asmlinkage long compat_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__))\
         {                                                               \
                 return C_SYSC##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__)); \
@@ -669,6 +670,13 @@ asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr,
 
 int compat_restore_altstack(const compat_stack_t __user *uss);
 int __compat_save_altstack(compat_stack_t __user *, unsigned long);
+#define compat_save_altstack_ex(uss, sp) do { \
+        compat_stack_t __user *__uss = uss; \
+        struct task_struct *t = current; \
+        put_user_ex(ptr_to_compat((void __user *)t->sas_ss_sp), &__uss->ss_sp); \
+        put_user_ex(sas_ss_flags(sp), &__uss->ss_flags); \
+        put_user_ex(t->sas_ss_size, &__uss->ss_size); \
+} while (0);
 
 asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid,
                                                  struct compat_timespec __user *interval);