We were handling closing of file descriptors incorrectly. The close_*()

and free_*_cookie() hooks of the underlying FS were always called
together when the reference count of the FD dropped to zero. When
blocking operations (reading/writing) on the FD were still in progress
this would never happen, though. Now we additionally maintain an open
count and call the close_*() hook when it drops to zero.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@11882 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/fd.h

@@ -36,6 +36,7 @@ struct fd_ops {
 struct file_descriptor {
 	int32	type;               /* descriptor type */
 	int32	ref_count;
+	int32	open_count;
 	struct fd_ops *ops;
 	union {
 		struct vnode *vnode;