blockdev: make "blockdev --rereadpt /dev/sda EXTRA_ARG" complain. +6 bytes.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>

diff --git a/util-linux/blockdev.c b/util-linux/blockdev.c
index 9b5d86d0048431f39d41e934022cf3b18f6fa24b..a780d2238e0c5c940a22d0980fad9a7e3e940f05 100644 (file)
--- a/util-linux/blockdev.c
+++ b/util-linux/blockdev.c
@@ -142,7 +142,7 @@ int blockdev_main(int argc, char **argv)
        lu = llu;
        iarg = llu;
 
-       if (!*++argv)
+       if (!*++argv || argv[1])
                bb_show_usage();
        fd = xopen(*argv, O_RDONLY);