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- if you want kerberos now, you need to unpack a lorikeet heimdal
tree in source/heimdal/. If source/heimdal/ does not exist at
configure time then all kerberos features are disabled. You cannot
use an external kerberos library for now. That may change later.
- moved lib/replace/ config stuff to lib/replace/ and create a
lib/replace/replace.h. That allows the heimdal build to use our
portability layer, and prevenets duplicate definitions of functions
like strlcat()
- if you do enable heimdal, then you will need to do 'make
HEIMDAL_EXTERNAL' before you build Samba. That should be fixed once
I explain the problem to jelmer (the problem is the inability to
set a depend without also dragging in the object list of the
dependency. We need this for building the heimdal asn1 compiler and
et compiler.
- disabled all of the m4 checks for external kerberos libraries. I
left them in place in auth/kerberos/, but disabled it in
configure.in
some of the heimdal_build/ code is still very rough, for example I
don't correctly detect the correct awk, flex, bison replacements for
heimdal_build/build_external.sh. I expect to fix that stuff up over
the next few days.
servers in smbd. The old code still contained a fairly bit of legacy
from the time when smbd was only handling SMB connection. The new code
gets rid of all of the smb_server specific code in smbd/, and creates
a much simpler infrastructures for new server code.
Major changes include:
- simplified the process model code a lot.
- got rid of the top level server and service structures
completely. The top level context is now the event_context. This
got rid of service.h and server.h completely (they were the most
confusing parts of the old code)
- added service_stream.[ch] for the helper functions that are
specific to stream type services (services that handle streams, and
use a logically separate process per connection)
- got rid of the builtin idle_handler code in the service logic, as
none of the servers were using it, and it can easily be handled by
a server in future by adding its own timed_event to the event
context.
- fixed some major memory leaks in the rpc server code.
- added registration of servers, rather than hard coding our list of
possible servers. This allows for servers as modules in the future.
- temporarily disabled the winbind code until I add the helper
functions for that type of server
- added error checking on service startup. If a configured server
fails to startup then smbd doesn't startup.
- cleaned up the command line handling in smbd, removing unused options
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 creates a new task and then starts a process_model "single"
with service "winbind_task"
- that means with -M single everything is in one process
with - M standard winbind is a seperate process but didn't fork for each connection
with -M thread winbind is a seperate thread but didn't thread for each connection
- the dummy server listen s on /tmp/.winbind/echo
and for better testing with telnet also on 127.0.255.1 port 55555
metze
- stream_socket services
the smb, ldap and rpc service which sets up a srtam socket end then
waits for connections
and
- task services
which this you can create a seperate task that do something
(this is also going through the process_model subsystem
so with -M standard a new process for this created
with -M thread a new thread ...
I'll add datagram services later when we whave support for datagram sockets in lib/socket/
see the next commit as an example for service_task's
metze
Both subsystems and modules can now have init functions, which can be
specified in .mk files (INIT_FUNCTION = ...)
The build system will define :
- SUBSYSTEM_init_static_modules that calls the init functions of all statically compiled modules. Failing to load will generate an error which is not fatal
- BINARY_init_subsystems that calls the init functions (if defined) for the subsystems the binary depends on
This removes the hack with the "static bool Initialised = " and the
"lazy_init" functions
deferred reply is short-circuited immediately when the file is
closed by another user, allowing it to be opened by the waiting user.
- added a sane set of timeval manipulation routines
- converted all the events code and code that uses it to use struct
timeval instead of time_t, which allows for microsecond resolution
instead of 1 second resolution. This was needed for doing the pvfs
deferred open code, and is why the patch is so big.
We found a few months ago that TDB_CLEAR_IF_FIRST is extremely
inefficient for large numbers of connections, due to a fundamental
limitation in the way posix byte range locking is implemented. Rather
than the nasty workaround we had for Samba3, we now have a single
"cleanup tmp files" function that runs when smbd starts. That deletes
the tmp tdbs, so TDB_CLEAR_IF_FIRST is not needed at all.
listening sockets after the fork to prevent the child still listening
on incoming requests.
I have also added an optimisation where we use dup()/close() to lower
the file descriptor number of the new socket to the lowest possible
after closing our listening sockets. This keeps the max fd num passed
to select() low, which makes a difference to the speed of select().
- added the new messaging system, based on unix domain sockets. It
gets over 10k messages/second on my laptop without any socket
cacheing, which is better than I expected.
- added a LOCAL-MESSAGING torture test
connection termination cleanup, and to ensure that the event
contexts are properly removed for every process model
- gave auth_context the new talloc treatment, which removes another
source of memory leaks.
as my box keeps getting hit by viruses spreading on my companies
internal network, which screws up my debug log badly (sigh).
metze, I'm not sure if you think access.c should go in the socket
library or not. It is closely tied to the socket functions, but you
may prefer it separate.
The access.c code is a port from Samba3, but with some cleanups to
make it (slighly) less ugly.
the idea is to have services as modules (smb, dcerpc, swat, ...)
the process_model don't know about the service it self anymore.
TODO:
- the smbsrv should use the smbsrv_send function
- the service subsystem init should be done like for other modules
- we need to have a generic socket subsystem, which handle stream, datagram,
and virtuell other sockets( e.g. for the ntvfs_ipc module to connect to the dcerpc server
, or for smb or dcerpc or whatever to connect to a server wide auth service)
- and other fixes...
NOTE: process model pthread seems to be broken( but also before this patch!)
metze
