fix public clone function to be safe and usable by applications

[musl] / src / internal / ksigaction.h

diff --git a/src/internal/ksigaction.h b/src/internal/ksigaction.h
index 9a70f93..ef333f3 100644 (file)
--- a/src/internal/ksigaction.h
+++ b/src/internal/ksigaction.h
@@ -1,6 +1,18 @@
+#include <features.h>
+
+/* This is the structure used for the rt_sigaction syscall on most archs,
+ * but it can be overridden by a file with the same name in the top-level
+ * arch dir for a given arch, if necessary. */
 struct k_sigaction {
        void (*handler)(int);
        unsigned long flags;
+#ifdef SA_RESTORER
        void (*restorer)(void);
+#endif
        unsigned mask[2];
+#ifndef SA_RESTORER
+       void *unused;
+#endif
 };
+
+hidden void __restore(), __restore_rt();