Update to working version

Still way off from something usable by someone else but it already works
for me.

1 files changed, 46 insertions, 0 deletions

diff --git a/sigpipe.c b/sigpipe.c
new file mode 100644
index 0000000..d653cbe
--- /dev/null
+++ b/sigpipe.c
@@ -0,0 +1,46 @@
+/* uroot - User's root
+ *   sigpipe.c Source file for signaling pipe implementation
+ *
+ * Copyright (C) 2018 Karel Kočí
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+#define _GNU_SOURCE
+#include "sigpipe.h"
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <assert.h>
+
+sigpipe_t sigpipe_new() {
+	sigpipe_t sp = malloc(2 * sizeof(int));
+	if (!pipe(sp))
+		assert_perror(errno);
+	return sp;
+}
+
+void sigpipe_wait(sigpipe_t sp) {
+	close(sp[1]);
+	char ch;
+	while (read(sp[0], &ch, 1) > 0);
+	assert_perror(errno);
+	free(sp);
+}
+
+void sigpipe_signal(sigpipe_t sp) {
+	close(sp[0]);
+	close(sp[1]);
+	free(sp);
+}