1 files changed, 56 insertions, 0 deletions
diff --git a/libnvme-wrap.c b/libnvme-wrap.c
new file mode 100644
index 0000000..354e7f7
--- /dev/null
+++ b/libnvme-wrap.c
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * This file is part of nvme-cli
+ *
+ * Copyright (c) 2022 Daniel Wagner, SUSE
+ */
+
+#include <dlfcn.h>
+#include <errno.h>
+
+#include <libnvme.h>
+
+#define PROTO(args...) args
+#define ARGS(args...) args
+
+#define VOID_FN(name, proto, args)				\
+void __attribute__((weak)) name(proto)				\
+{								\
+	void (*fn)(proto);					\
+	fn = dlsym(RTLD_NEXT, #name);				\
+	if (fn)							\
+		fn(args);					\
+}
+
+#define FN(name, rtype, proto, args, defret)			\
+rtype __attribute__((weak)) name(proto)				\
+{								\
+	rtype (*fn)(proto);					\
+	fn = dlsym(RTLD_NEXT, #name);				\
+	if (fn)							\
+		return fn(args);				\
+	return defret;						\
+}
+
+FN(nvme_get_version,
+	const char *, PROTO(enum nvme_version type),
+	ARGS(type), "n/a")
+
+VOID_FN(nvme_init_copy_range_f1,
+	PROTO(struct nvme_copy_range_f1 *copy, __u16 *nlbs,
+	      __u64 *slbas, __u64 *eilbrts, __u32 *elbatms,
+	      __u32 *elbats, __u16 nr),
+	ARGS(copy, nlbs, slbas, eilbrts, elbatms, elbats, nr))
+
+FN(nvme_get_feature_length2,
+	int,
+	PROTO(int fid, __u32 cdw11, enum nvme_data_tfr dir,
+	      __u32 *len),
+	ARGS(fid, cdw11, dir, len),
+	-EEXIST)
+
+FN(nvme_ctrl_is_persistent,
+	bool,
+	PROTO(nvme_ctrl_t c),
+	ARGS(c),
+	false)