add some scaffolding for file descriptors

1 files changed, 13 insertions, 0 deletions

diff --git a/src/kernel/fd.c b/src/kernel/fd.c
new file mode 100644
index 0000000..54f1c72
--- /dev/null
+++ b/src/kernel/fd.c
@@ -0,0 +1,13 @@
+#include <kernel/fd.h>
+#include <kernel/panic.h>
+#include <kernel/proc.h>
+
+int fdop_dispatch(enum fdop fdop, fd_t fd, void *ptr, size_t len) {
+	if (fd < 0 || fd >= FD_MAX) return -1;
+	switch(process_current->fds[fd].type) {
+		case FD_EMPTY:
+			return -1;
+		default:
+			panic();
+	}
+}