Treat feature as experimental

Due to fact that IMSM Windows compatibility was not tested yet,
feature has to be treated as experimental until compatibility
verification will be performed.

Signed-off-by: Adam Kwolek <adam.kwolek@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 10 insertions, 0 deletions

diff --git a/util.c b/util.c
index fde58ebb..4b41e2b4 100644
--- a/util.c
+++ b/util.c
@@ -1896,3 +1896,13 @@ void append_metadata_update(struct supertype *st, void *buf, int len)
 unsigned int __invalid_size_argument_for_IOC = 0;
 #endif
 
+int experimental(void)
+{
+	if (check_env("MDADM_EXPERIMENTAL"))
+		return 1;
+	else {
+		fprintf(stderr, Name ": To use this feature MDADM_EXPERIMENTAL enviroment variable has to defined.\n");
+		return 0;
+	}
+}
+