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Update the debug logging to use the currently preferred debug macros
Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Refactor the process model code to allow the addition of a prefork
process model.
- Add a process context to contain process model specific state
- Add a service details structure to allow service to indicate which
process model options they can support.
In the new code the services advertise the features they support to the
process model. The process model context is plumbed through to allow the
process model to keep track of the supported options, and any state
the process model may require.
Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
The standard model uses a pipe to signal the worker processes spawned on
accept that the controlling process has terminated and that they should
shut down. This pipe is currently a static global variable in
process_standard.c.
This patch replaces that global pipe with a file descriptor passed into
the process model init functions, giving a single mechanism across all process
models. This paves the way for the addition of a pre-fork process model.
Ensuring that the correct file descriptors are closed, is difficult so
it is best do this only once rather than require the process models to
do this individually.
Notes on debugging pipe ownership:
Add code to log the process id and the file descriptor of the writeable
pipe.
run:
lsof | grep FIFO | grep samba | grep <process id>
this will produce lines like:
samba 25624 him 4w FIFO 0,10 0t0 472206 pipe
where: 4w is the file descriptor and mode and the number to the left
of "pipe" is the pipe id.
then:
lsof | grep FIFO | grep samba | grep <pipe id>
This will display all the processes with the pipe open and the mode
only the smbd master process should have it open in write mode.
Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Thu Sep 28 02:08:34 CEST 2017 on sn-devel-144
Use the passed in context from callers. Remove one
talloc_autofree_context().
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
this also removes the event_context parameter from process model
initialisation. It isn't needed, and is confusing when a process model
init can be called from more than one place, possibly with different
event contexts.
Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>
task_service_init() manually. Now this is called from service.c for
all services.
Andrew Bartlett
(This used to be commit 9c9a4731cafd0dcf6c8523a7b06759cd4f14e4db)
There are still a few tidyups of old FSF addresses to come (in both s3
and s4). More commits soon.
(This used to be commit fcf38a38ac691abd0fa51b89dc951a08e89fdafa)
* Move dlinklist.h, smb.h to subsystem-specific directories
* Clean up ads.h and move what is left of it to dsdb/
(only place where it's used)
(This used to be commit f7afa1cb77f3cfa7020b57de12e6003db7cfcc42)
- 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.
(This used to be commit d4648249b2c7fc8b5e7c0fc8d8f92ae043b5691f)
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
(This used to be commit cf6a46c3cbde7b1eb1b86bd3882b953a2de3a42e)
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 7f981b9ed96f39027cbfd500f41e0c2be64cbb50)
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 a3c7417cfeab429ffb22d5546b205818f531a7b4)
- 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
(This used to be commit 5190f60dedc4076d94fbf77e02eb3b5312d953ec)
- 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
(This used to be commit d5fa02746c6569b09b6e05785642da2fad3ba3e0)
- Re-disable tdbtool (it was building fine on my Debian box but other
machines were having problems)
(This used to be commit 0d7bb2c40b7a9ed59df3f8944133ea562697e814)
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
(This used to be commit 7a8244761bfdfdfb48f8264d76951ebdfbf7bd8a)
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.
(This used to be commit 0d51511d408d91eb5f68a35e980e0875299b1831)
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.
(This used to be commit ffa285bc783c775a2d53a58fb691ca339e6c76ae)
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().
(This used to be commit f2a9bbc317ba86ebe87c3ca27a3a0192de91014d)
- 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
(This used to be commit 3af06478da7ab34a272226d8d9ac87e0a4940cfb)
enough for us to pass locktest, but does not yet support lock timeouts
and some of the other esoteric features.
(This used to be commit 58a92abd88f190bc60894a68e0528e95ae33fe39)
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.
(This used to be commit 230e1cd777b0fba82dffcbd656cfa23c155d0560)
library are closed on abnormal termination
- convert the service.h structures to the new talloc methods
(This used to be commit 2dc334a3284858eb1c7190f9687c9b6c879ecc9d)
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.
(This used to be commit 058b2fd99e3957d7d2a9544fd27071f1122eab68)
