kernel: user interrupts

1 files changed, 11 insertions, 0 deletions

diff --git a/src/user/lib/unistd.c b/src/user/lib/unistd.c
index 01aa94f..cb862f8 100644
--- a/src/user/lib/unistd.c
+++ b/src/user/lib/unistd.c
@@ -161,3 +161,14 @@ size_t absolutepath(char *out, const char *in, size_t size) {
 void __setinitialcwd(const char *s) {
 	__initialcwd = s;
 }
+
+static void intr_null(void) { }
+
+extern void (*volatile _intr)(void);
+void intr_set(void (*fn)(void)) {
+	_intr = fn ? fn : intr_null;
+}
+
+void intr_default(void) {
+	exit(-1);
+}