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free the connection context. This left a whole lot of state hanging
around and didn't give the memory to the caller properly
(This used to be commit 3e13e1d526)
inverted memory hierarchy. Now the memory hierarchy is logical its not
needed (and can cause a double free in RPC-SCHANNEL)
(This used to be commit f8a950b57d)
handle the inverted memory hierarchy that a normal session
establishment gave. The inverted hierarchy came from that fact that
you first establish a socket, then a transport, then a session and
finally a tree. That leads to the socket being at the top of the
memory hierarchy and the tree at the bottom, which makes no sense from
the users point of view, as they want to be able to free the tree and
have everything disappear.
The core problem was that the libcli interface didn't distinguish
between establishing a primary context and a secondary context. If you
establish a 2nd session on a transport then you want the transport to
be referenced by the session, whereas if you establish a primary
session then you want the transport to be a child of the session.
To fix this I have added "parent_ctx" and "primary" arguments to the
libcli intialisation functions. This makes using the library much
easier, and gives us a memory hierarchy that makes much more sense.
I was prompted to do this by a bug in the cifs backend, which was
caused by the socket not being properly torn down on a disconnect due
to the inverted memory hierarchy.
(This used to be commit 5e8fd5f701)
In general, now that events are children of the structure they are
handling events for, the caller only needs to keep the event handle
around if it plans on changing the event flags later
(This used to be commit 8c89551554)
control of the event, so instead build that into the function. If you
pass NULL as mem_ctx then it leaves it as a child of the events
structure.
(This used to be commit 7f981b9ed9)
complexity was that events didn't automatically cleanup
themselves. This was because the events code was written before we had
talloc destructors, so you needed to call event_remove_XX() to clean
the event out of the event lists from every piece of code that used
events. I have now added automatic event destructors, which in turn
allowed me to simplify a lot of the calling code.
The 2nd source of complexity was caused by the ref_count, which was
needed to cope with event handlers destroying events while handling
them, which meant the linked lists became invalid, so the ref_count ws
used to mark events for later destruction.
The new system is much simpler. I now have a ev->destruction_count,
which is incremented in all event destructors. The event dispatch code
checks for changes to this and handles it.
(This used to be commit a3c7417cfe)
it is freed. The problem is that the handler might complete the
request, and called the c->async.fn() async handler. That handler
might free the request handle.
(This used to be commit c4faceadc7)
- expanded the generic async name resolver to try multiple methods
- added wins resolutions to the list of methods tried
- fixed up the random trn id generation to use the good random generator
(This used to be commit 266fd2751c)
(which seem just a little too complex) changed, but this code was not
updated or tested.
Also clarify the existing code, by not reusing variables.
Andrew Bartlett
(This used to be commit eb46adade4)
which will eventually try all resolution methods setup in smb.conf
- only resolution backend at the moment is bcast, which does a
parallel broadcast to all configured network interfaces, and takes
the first reply that comes in (this nicely demonstrates how to do
parallel requests using the async APIs)
- converted all the existing code to use the new resolve_name() api
- removed all the old nmb code (yay!)
(This used to be commit 239c310f25)
