From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:43241) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cUTXu-0005vu-D9 for qemu-devel@nongnu.org; Fri, 20 Jan 2017 02:23:39 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cUTXt-0008S6-LP for qemu-devel@nongnu.org; Fri, 20 Jan 2017 02:23:38 -0500 From: Fam Zheng Date: Fri, 20 Jan 2017 15:22:57 +0800 Message-Id: <20170120072310.8009-4-famz@redhat.com> In-Reply-To: <20170120072310.8009-1-famz@redhat.com> References: <20170120072310.8009-1-famz@redhat.com> Subject: [Qemu-devel] [PATCH v11 03/16] qemu-io: Set "share-rw" flag together with read-only List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: qemu-block@nongnu.org, Kevin Wolf , rjones@redhat.com, Max Reitz , "Daniel P. Berrange" , eblake@redhat.com qemu-io is a low level tool to read or modify guest visible data, which implies the user knows very well what is being done. Allowing reading from a locked image is harmless in most cases, so do it. Signed-off-by: Fam Zheng --- qemu-io.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/qemu-io.c b/qemu-io.c index 23a229f..f000504 100644 --- a/qemu-io.c +++ b/qemu-io.c @@ -585,6 +585,8 @@ int main(int argc, char **argv) /* open the device */ if (!readonly) { flags |= BDRV_O_RDWR; + } else { + flags |= BDRV_O_SHARE_RW; } if ((argc - optind) == 1) { -- 2.9.3