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We will get this supported later, but for now just disable async
opens as fsp->mid may not belong the first xconn of client->connections.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14449
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
In all places where we access or modify a file or it's associated metadata, we
use fsp_get_io_fd() to fetch the low-level fd from the fsp. This ensures we
don't accidentally use a pathref fsp where the fd would be opened as root on
systems lacking O_PATH.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Prepares for an upcoming aio_pthread_openat_fn(). open_async() passes fspcwd.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
opd->dname was only needed for debug messages, use opd->fsp_name for that. And
opd->fname can be just made a copy of smb_fname. This avoids calling
parent_smb_fname().
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Allocate state off fsp->conn, not NULL, and add a destructor
that catches deallocation of conn which happens
on connection shutdown or force close.
Note - We don't allocate off fsp as the passed in
fsp will get freed once we return EINPROGRESS/NT_STATUS_MORE_PROCESSING_REQUIRED.
A new fsp pointer gets allocated on every re-run of the
open code path.
The destructor allows us to NULL out the saved conn struct pointer
when conn is deallocated so we know not to access deallocated memory.
This matches the async teardown code changes for bug #14301
in pread/pwrite/fsync vfs_default.c and vfs_glusterfs.c
state is still correctly deallocated in all code
paths so no memory leaks.
This allows us to safely complete when the openat()
returns and then return the error NT_STATUS_NETWORK_NAME_DELETED
to the client open request.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14301
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Pass in NULL for now so no behavior change.
We will be changing this from NULL to fsp->conn in a later commit.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14301
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
We will need this in future to cause a pending open to
be rescheduled after the connection struct we're using
has been shut down with an aio open in flight. This will
allow a correct error reply to an awaiting client.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14301
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
This will allow repurposing a real destructor to allow
connections structs to be freed whilst the aio open
request is in flight.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14301
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
According to Posix and the Linux open(2) manpage, the open-syscall can
return EINTR. If that happens, core smbd saw this as an indication
that aio_pthread's open function was doing its job. With a real EINTR
without aio_pthread this meant we ended up in a server_exit after 20
seconds, because there was nobody to do the retry.
EINTR is mapped to NT_STATUS_RETRY. Handle this by just retrying after
a second.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=14285
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Feb 20 22:14:25 UTC 2020 on sn-devel-184
Or the root glue in case we're already root.
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Ralph Boehme <slow@samba.org>
This should in future not be used directly, we'll provide
wrapper pools, which will provide impersonation for
path based async calls.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
The define reflects the results of a feature test, not a configure
option.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
This will be filled with an impersonation wrapper in the next commits.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
pthreadpool_tevent provides a much simpler api and avoids an extra
pipe for the completion notification.
This means we now have just one thread pool, that's shared for
all async pread, pwrite, fsync and openat() calls, instead of having
an extra pool for openat() with the same possible number of threads.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Mon Apr 23 13:30:06 CEST 2018 on sn-devel-144
Signed-off-by: Christof Schmitt <cs@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Mon Dec 18 13:32:00 CET 2017 on sn-devel-144
Not currently used - no logic changes inside.
This will make it possible to pass down a long-lived talloc
context from the loading function for modules to use instead
of having them internally all use talloc_autofree_context()
which is a hidden global.
Updated all known module interface numbers, and added a
WHATSNEW.
Signed-off-by: Jeremy Allison <jra@samba.org>
Signed-off-by: Ralph Böhme <slow@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Sat Apr 22 01:17:00 CEST 2017 on sn-devel-144
Removes accessor functions as now this parameter is set
under user control in smb.conf. Default is 100.
Note that this doesn't limit the number of outstanding
aio requests, it just causes them to go onto the
pthreadpool queue.
Now we need to prioritize pthreadpool pipe replies
ahead of incoming SMB2 requests, but that's a patch
for another day.
Based on ideas from Volker.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Christof Schmitt <cs@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
This fixes an incompatible pointer warning which uncovered
a real bug. This caller was missed when converting the function.
This fix is only temporary, since we use fsp->sconn->client->connections
which is supposed to be the start of the list of transport connections
by a given client treated by this smbd process. Currently there is only
one such connection, but with multi-channel there might be more. So
we will need to improve this in the future.
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Thu Oct 23 23:10:35 CEST 2014 on sn-devel-104
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Oct 21 04:58:44 CEST 2014 on sn-devel-104
This can avoid syscalls when multiple jobs are finished simultaneously
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Use initial_allocation_size to allocate on disk if sent. Ignore
failures (upper level will cope).
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Fri Jul 13 00:35:48 CEST 2012 on sn-devel-104
Fixes all issues raised originally. This code
will only do threaded opens with thread-specific
credentials (Linux for now) and changes credentials
before doing the call. Also only fires on O_CREAT|O_EXCL
so will only create new files, never open old ones
async.
Volker, this is isolated enough that it shouldn't
prevent you from refactoring it into a new module
when the aio pread/pwrite code is moved into the
default aio path.
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Wed Jul 11 08:04:56 CEST 2012 on sn-devel-104
