Merge branch 'nfsd-next' of git://linux-nfs.org/~bfields/linux

[cascardo/linux.git] / include / linux / signal.h

diff --git a/include/linux/signal.h b/include/linux/signal.h
index d897484..2ac423b 100644 (file)
--- a/include/linux/signal.h
+++ b/include/linux/signal.h
@@ -434,6 +434,14 @@ void signals_init(void);
 int restore_altstack(const stack_t __user *);
 int __save_altstack(stack_t __user *, unsigned long);
 
+#define save_altstack_ex(uss, sp) do { \
+       stack_t __user *__uss = uss; \
+       struct task_struct *t = current; \
+       put_user_ex((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);
+
 #ifdef CONFIG_PROC_FS
 struct seq_file;
 extern void render_sigset_t(struct seq_file *, const char *, sigset_t *);