1 files changed, 38 insertions, 0 deletions
diff --git a/msdos/sigaction.c b/msdos/sigaction.c
new file mode 100644
index 00000000000..5b3ae790813
--- /dev/null
+++ b/msdos/sigaction.c
@@ -0,0 +1,38 @@
+/* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */
+#include <signal.h>
+#include <errno.h>
+
+int
+sigaction(int _sig, const struct sigaction *_act, struct sigaction *_oact)
+{
+  int retval = 0;
+
+  if (_oact)
+  {
+    void (*installed_sig)(int) = signal (_sig, SIG_IGN);
+
+    /* FIXME */
+    if (installed_sig == SIG_ERR)
+    {
+      retval = -1;
+      errno = EINVAL;
+    }
+    else
+      signal (_sig, installed_sig);
+    _oact->sa_handler = installed_sig;
+    retval = sigemptyset (&_oact->sa_mask);
+    _oact->sa_flags = 0;
+  }
+  if (_act)
+  {
+    if (signal (_sig, _act->sa_handler) == SIG_ERR)
+    {
+      retval = -1;
+      errno = EINVAL;
+    }
+  }
+  return 0;
+}
+
+
+