Fix race condition: canUnmount needs tree to be locked.

83dd60a5 · Han-Wen Nienhuys · eedf4e5e · 83dd60a5
Commit 83dd60a5 authored Jun 08, 2012 by Han-Wen Nienhuys
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fuse/fsconnector.go fuse/fsconnector.go +3 -0

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--- a/fuse/fsconnector.go
+++ b/fuse/fsconnector.go
@@ -323,6 +323,9 @@ func (c *FileSystemConnector) Unmount(node *Inode) Status {
 		return EBUSY
 	}

+	node.treeLock.Lock()
+	defer node.treeLock.Unlock()
+
 	mountInode := mount.mountInode
 	if !mountInode.canUnmount() {
 		return EBUSY