From ee20cd02abd2b0c08f075e89f819eadfaccf7ee2 Mon Sep 17 00:00:00 2001
From: Dan Mick <dan.mick@inktank.com>
Date: Tue, 16 Oct 2012 18:22:35 -0700
Subject: [PATCH] rbd: reject negative size (can make image that is hard to
 delete)

Signed-off-by: Dan Mick <dan.mick@inktank.com>
---
 src/rbd.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/rbd.cc b/src/rbd.cc
index ce638d99f787e..76af1325e6999 100644
--- a/src/rbd.cc
+++ b/src/rbd.cc
@@ -1330,6 +1330,10 @@ int main(int argc, const char **argv)
 	cerr << "rbd: " << err.str() << std::endl;
 	return EXIT_FAILURE;
       }
+      if (sizell < 0) {
+	cerr << "rbd: size must be > 0" << std::endl;
+	return EXIT_FAILURE;
+      }
       size = sizell << 20;   // bytes to MB
     } else if (ceph_argparse_flag(args, i, "-l", "--long", (char*)NULL)) {
       lflag = true;
-- 
2.39.5