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This makes sure we do not dereference a NULL poineter.
Found by covscan.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Thu Nov 26 11:07:09 UTC 2020 on sn-devel-184
No non-async callees are used anymore
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 Nov 19 04:12:11 UTC 2020 on sn-devel-184
This prepares cli_list_recv() for the lowerlevel NT_STATUS_RETRY that
will come in once cli_list_send() uses cli_smb2_list_send() as well.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This converts the higher-level cli_list_recv() to the new
cli_smb2_list_recv() calling convention to just issue one entry per
recv() call in preparation of using the async cli_smb2_list_send() in
cli_list_send().
For SMB1 this will be a performance degradation, as we have to make
copies out of the arrays that cli_trans_recv() returns, but soon this
will become a performance improvement for the SMB2 directory
listing. And as hopefully most deployments these days are SMB2, I
think we can live with the SMB1 client directory listing
degradation. Also, we can also convert the lowerlevel SMB1 directory
listing routines in case someone actually sees problems from this
here.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Return directory entries as soon as possible via
cli_smb2_list_recv(). This returns just one entry per call to
cli_smb2_list_recv() right out of the buffer without assembling
potentially thousands of entries in a big array. You must call
cli_smb2_recv() until an error (except NT_STATUS_RETRY) happens. This
reduces our latency for smbclient's "dir" command significantly for
large directories. In the future I hope I can do the same thing also for
SMBC_readdir_ctx() to improve all users of our published libsmbclient.
Initial attempts of this routine issued fresh smb2_query_directory
requests asynchronously while the receivers of the entries did their
processing, for example showing them in smbclient's "dir"
command. However, this breaks because for example the "showacls"
smbclient option needs to do synchronous smb requests to do their job,
which we can't do while async requests are pending. Thus I came up
with a semi-synchronous approach to issue additional
smb2_query_directory requests from within cli_smb2_list_recv() and
return NT_STATUS_RETRY. This means that we will call back our caller
via the tevent_req_notify function when a fresh entry is available.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
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): Mon Nov 16 21:18:16 UTC 2020 on sn-devel-184
Now that delete_tree is in python code, align py_smb_rmdir() with the
other functions.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Now that delete_tree is in python code, align py_smb_unlink() with the
other functions.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This is much shorter. There's also another aspect: I'm working on
improving cli_list() to not collect all files before starting to call
the callback function. This means that the cli_list cb will be called
from within tevent_loop_once(). In pylibsmb.c's deltree code this
would create a nested event loop. By moving the deltree code into the
python world this nested event loop is avoided. Now the python code
will first collect everything and then start to delete, avoiding the
nesting. A future development should make listing directories a
generator or something like that.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Right now this is empty, but it is the basis for moving complexity out
or pylibsmb.c into python code.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Not used anymore
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): Wed Nov 4 20:17:47 UTC 2020 on sn-devel-184
do_list()/do_list_helper() in source3/client/client.c was the only user of this
argument. And that use was wrong.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
"num_bytes" is uint32_t, "received" is uint16_t. The multiplication
seems to implicitly widen "received" to int, leading to a
signed/unsigned warning. This cast makes that warning go away.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
The additional conditions in cli_dfs_check_error() were covered
earlier in cli_resolve_path() via cli_conn_have_dfs(). Without those
it's more obvious to directly call NT_STATUS_EQUAL here.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This also does the checks from cli_dfs_check_error(), which can be
removed in the next step.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
The if check for max_protocol == 0 is part of lp_client_max_protocol().
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
