diff --git a/src/include/unistd.h b/src/include/unistd.h
new file mode 100644
index 0000000..386c52f
--- /dev/null
+++ b/src/include/unistd.h
@@ -0,0 +1,11 @@
+#ifndef _UNISTD_H
+#define _UNISTD_H
+
+#include <stddef.h>
+#include <sys/types.h>
+
+ssize_t read(int fildes, void *buf, size_t nbyte);
+ssize_t write(int fildes, const void *buf, size_t nbyte);
+int close(int fildes);
+
+#endif
diff --git a/src/unistd.c b/src/unistd.c
new file mode 100644
index 0000000..2e8b142
--- /dev/null
+++ b/src/unistd.c
@@ -0,0 +1,14 @@
+#include <unistd.h>
+#include <liblinux.h>
+
+ssize_t read(int fildes, void *buf, size_t nbyte) {
+  return sys_read(fildes, buf, nbyte);
+}
+
+ssize_t write(int fildes, const void *buf, size_t nbyte) {
+  return sys_write(fildes, buf, nbyte);
+}
+
+int close(int fildes) {
+  return sys_close(fildes);
+}