# HG changeset patch
# User Keir Fraser <keir.fraser@citrix.com>
# Date 1260522075 0
# Node ID 63ff27b3b07ad884613e32fe06909bb20e354378
# Parent  f61303bcc3ac6fbf67b9f92183fecc4b6f26d324
mini-os: Fix memory leaks in xs_read() and xs_write()

xenbus_read() and xenbus_write() will allocate memory for error
message if any error occurs, this memory should be freed.

Signed-off-by: Yu Zhiguo <yuzg@cn.fujitsu.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>

diff -r f61303bcc3ac -r 63ff27b3b07a extras/mini-os/lib/xs.c
--- a/extras/mini-os/lib/xs.c	Fri Dec 11 09:00:40 2009 +0000
+++ b/extras/mini-os/lib/xs.c	Fri Dec 11 09:01:15 2009 +0000
@@ -49,6 +49,7 @@ void *xs_read(struct xs_handle *h, xs_tr
     msg = xenbus_read(t, path, &value);
     if (msg) {
 	printk("xs_read(%s): %s\n", path, msg);
+	free(msg);
 	return NULL;
     }
 
@@ -69,6 +70,7 @@ bool xs_write(struct xs_handle *h, xs_tr
     msg = xenbus_write(t, path, value);
     if (msg) {
 	printk("xs_write(%s): %s\n", path, msg);
+	free(msg);
 	return false;
     }
     return true;