From: vhanquez@gwig.uk.xensource.com <vhanquez@gwig.uk.xensource.com>
Date: Sat, 29 Jul 2006 13:05:59 +0000 (+0100)
Subject: Limit the number of opened transactions per connection to 5.
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~15764
X-Git-Url: https://dgit.raspbian.org/%22http:/www.example.com/cgi/%22https:/%22bookmarks://%22Dat/%22http:/www.example.com/cgi/%22https:/%22bookmarks:/%22Dat?a=commitdiff_plain;h=d763fcc1635f3dfc4af6da15a3f329cbe0e3e14e;p=xen.git

Limit the number of opened transactions per connection to 5.

Signed-off-by: Vincent Hanquez <vincent@xensource.com>
---

diff --git a/tools/xenstore/xenstored_transaction.c b/tools/xenstore/xenstored_transaction.c
index f9d844e045..a3f2157256 100644
--- a/tools/xenstore/xenstored_transaction.c
+++ b/tools/xenstore/xenstored_transaction.c
@@ -125,6 +125,7 @@ void do_transaction_start(struct connection *conn, struct buffered_data *in)
 {
 	struct transaction *trans, *exists;
 	char id_str[20];
+	int started;
 
 	/* We don't support nested transactions. */
 	if (conn->transaction) {
@@ -132,6 +133,15 @@ void do_transaction_start(struct connection *conn, struct buffered_data *in)
 		return;
 	}
 
+	started = 0;
+	list_for_each_entry(trans, &conn->transaction_list, list)
+		started++;
+
+	if (started > 5) {
+		send_error(conn, ENOSPC);
+		return;
+	}
+
 	/* Attach transaction to input for autofree until it's complete */
 	trans = talloc(in, struct transaction);
 	INIT_LIST_HEAD(&trans->changes);