lib: c: io: implement getdents()

lib/libc/io/unistd/getdents.c

@@ -0,0 +1,22 @@
+#include <errno.h>
+#include <mango/handle.h>
+#include <mango/msg.h>
+#include <rosetta/fs.h>
+#include <sys/remote.h>
+#include <sys/types.h>
+
+int getdents(int fd, struct dentry *dirp, unsigned int count)
+{
+	int err;
+	size_t nr_read = 0;
+	kern_status_t status = fs_getdents(fd, &err, dirp, count, &nr_read);
+	if (status != KERN_OK) {
+		return __set_errno(__errno_from_kern_status(status));
+	}
+
+	if (err != SUCCESS) {
+		return __set_errno(err);
+	}
+
+	return nr_read;
+}