The btrfs-image requires at least 2 args to run,
one for the source dev/file, the other for the target dev/file.
Signed-off-by: Gui Hecheng <guihc.f...@cn.fujitsu.com>
---
btrfs-image.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/btrfs-image.c b/btrfs-image.c
index e0aabfd..b13f236 100644
--- a/btrfs-image.c
+++ b/btrfs-image.c
@@ -2521,6 +2521,9 @@ int main(int argc, char *argv[])
}
argc = argc - optind;
+ if (argc < 2)
+ print_usage();
+
dev_cnt = argc - 1;
if (create) {
--
1.8.1.4
--
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