From: Richard W.M. Jones <rjones@redhat.com>
Date: Mon, 10 Jun 2013 11:38:43 +0000 (+0100)
Subject: block/curl.c: Refuse to open the handle for writes.
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=a7cea2ba47ea6d361584072f96d7858f5cc99009;p=qmiga%2Fqemu.git

block/curl.c: Refuse to open the handle for writes.

Signed-off-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---

diff --git a/block/curl.c b/block/curl.c
index 4dc3b4b71b..0fba451e3b 100644
--- a/block/curl.c
+++ b/block/curl.c
@@ -406,6 +406,12 @@ static int curl_open(BlockDriverState *bs, QDict *options, int flags)
 
     static int inited = 0;
 
+    if (flags & BDRV_O_RDWR) {
+        qerror_report(ERROR_CLASS_GENERIC_ERROR,
+                      "curl block device does not support writes");
+        return -EROFS;
+    }
+
     opts = qemu_opts_create_nofail(&runtime_opts);
     qemu_opts_absorb_qdict(opts, options, &local_err);
     if (error_is_set(&local_err)) {