nanddump: warn about new default BB handling

In an upcoming release, we will no longer default to --bb=padbad. Instead,
the default will be --bb=skipbad. This makes nanddump a better inverse
operation to nandwrite.

This patch prints warnings for users so that they get a chance to update
their scripts before the default changes officially.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/nanddump.c b/nanddump.c
index 103ad06..b6307cf 100644
--- a/nanddump.c
+++ b/nanddump.c
@@ -249,6 +249,11 @@ static void process_options(int argc, char * const argv[])
 		exit(EXIT_FAILURE);
 	}
 
+	if (bb_default)
+		warnmsg("you did not specify a default bad-block handling\n"
+			"  method. In future versions, the default will change to\n"
+			"  --bb=skipbad. Use \"nanddump --help\" for more information.");
+
 	if ((argc - optind) != 1 || error)
 		display_help();