user/libc: prepare for OpenED port

1 files changed, 17 insertions, 0 deletions

diff --git a/src/user/lib/include/signal.h b/src/user/lib/include/signal.h
new file mode 100644
index 0000000..c279beb
--- /dev/null
+++ b/src/user/lib/include/signal.h
@@ -0,0 +1,17 @@
+#pragma once
+#include <errno.h> // only for ENOSYS
+
+#define SIGHUP 0
+#define SIGINT 0
+#define SIGWINCH 0
+#define SIGQUIT 0
+#define SIG_IGN 0
+#define SIG_ERR 0
+
+typedef int sig_atomic_t;
+
+static inline int signal(int sig, void (*func)(int)) {
+	(void)sig; (void)func;
+	errno = ENOSYS;
+	return SIG_ERR;
+}