From: Tomas Hruby <tom@minix3.org>
Date: Tue, 18 Aug 2009 13:30:05 +0000 (+0000)
Subject: VFS quits gracefully if mount fails and mounted_on remains uninitialized
X-Git-Tag: v3.1.5~180
X-Git-Url: http://zhaoyanbai.com/repos/%22http:/www.isc.org/icons/zlib_tech.html?a=commitdiff_plain;h=f3e0c5c3817a9afb6b1ff7c933b79dd9209edc87;p=minix.git

VFS quits gracefully if mount fails and mounted_on remains uninitialized
---

diff --git a/servers/vfs/mount.c b/servers/vfs/mount.c
index d337a4b3f..0324704b3 100644
--- a/servers/vfs/mount.c
+++ b/servers/vfs/mount.c
@@ -102,7 +102,7 @@ PRIVATE int mount_fs(endpoint_t fs_e)
   struct dmap *dp;
   dev_t dev;
   message m;
-  struct vnode *root_node, *mounted_on, *bspec;
+  struct vnode *root_node, *mounted_on = NULL, *bspec;
   struct vmnt *vmp;
   char *label;
   struct node_details res;
@@ -289,7 +289,8 @@ PRIVATE int mount_fs(endpoint_t fs_e)
   /* Issue request */
   r = req_readsuper(fs_e, label, dev, m_in.rd_only, isroot, &res);
   if (r != OK) {
-	put_vnode(mounted_on);
+	if (mounted_on)
+		put_vnode(mounted_on);
 	return r;
   }