Support signal handling with SIGPIPE on native Windows platforms.

1 files changed, 51 insertions, 0 deletions

diff --git a/lib/sigprocmask.c b/lib/sigprocmask.c
index d6daca6ae2..7f73f951c1 100644
--- a/lib/sigprocmask.c
+++ b/lib/sigprocmask.c
@@ -45,6 +45,31 @@
 
 typedef void (*handler_t) (int);
 
+/* Handling of gnulib defined signals.  */
+
+#if GNULIB_defined_SIGPIPE
+static handler_t SIGPIPE_handler = SIG_DFL;
+#endif
+
+#if GNULIB_defined_SIGPIPE
+static handler_t
+ext_signal (int sig, handler_t handler)
+{
+  switch (sig)
+    {
+    case SIGPIPE:
+      {
+	handler_t old_handler = SIGPIPE_handler;
+	SIGPIPE_handler = handler;
+	return old_handler;
+      }
+    default: /* System defined signal */
+      return signal (sig, handler);
+    }
+}
+# define signal ext_signal
+#endif
+
 int
 sigismember (const sigset_t *set, int sig)
 {
@@ -240,3 +265,29 @@ rpl_signal (int sig, handler_t handler)
       return SIG_ERR;
     }
 }
+
+#if GNULIB_defined_SIGPIPE
+/* Raise the signal SIG.  */
+int
+rpl_raise (int sig)
+# undef raise
+{
+  switch (sig)
+    {
+    case SIGPIPE:
+      if (blocked_set & (1U << sig))
+	pending_array[sig] = 1;
+      else
+	{
+	  handler_t handler = SIGPIPE_handler;
+	  if (handler == SIG_DFL)
+	    exit (128 + SIGPIPE);
+	  else if (handler != SIG_IGN)
+	    (*handler) (sig);
+	}
+      return 0;
+    default: /* System defined signal */
+      return raise (sig);
+    }
+}
+#endif