new helpers: __save_altstack/__compat_save_altstack, switch x86 and um to those

note that they are relying on access_ok() already checked by caller. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-20 14:24:26 -05:00
parent 9026843952
commit c40702c49f
6 changed files with 25 additions and 25 deletions
@@ -647,6 +647,7 @@ asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr,
 				       compat_stack_t __user *uoss_ptr);

 int compat_restore_altstack(const compat_stack_t __user *uss);
+int __compat_save_altstack(compat_stack_t __user *, unsigned long);
 #endif

 #else
@@ -386,5 +386,6 @@ int unhandled_signal(struct task_struct *tsk, int sig);
 void signals_init(void);

 int restore_altstack(const stack_t __user *);
+int __save_altstack(stack_t __user *, unsigned long);

 #endif /* _LINUX_SIGNAL_H */