OrionLibC

diff --git a/unistd/chdir.c b/unistd/chdir.c
new file mode 100644
index 0000000..c146c8c
--- /dev/null
+++ b/unistd/chdir.c
@@ -0,0 +1,15 @@
+#include <sys/syscall.h>
+#include <errno.h>
+
+/* Change the process' file system current working directory */
+int
+chdir(const char *path)
+{
+	int ret;
+	asm volatile("int $0x80" : "=a" (ret) : "0" (SYSCALL_CHDIR),
+	             "c" (1), "S" (&path));
+	if (ret >= 0)
+		return ret;
+	errno = -ret;
+	return -1;
+}