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Start of the move towards handle-based code for directory access.
Currently makes fstat/fchown code work for directories rather than
falling back to pathnames.
Jeremy.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Tue Feb 8 06:34:41 CET 2011 on sn-devel-104
delay_for_oplocks() did 4 things.
1). Validation of existing oplock types.
2). Check for compatibility with batch oplocks (pass 1).
3). Check for compatibility with exclusive oplocks (pass 2).
4). Set the correct oplock type from the requested value.
Refactor into 4 separate functions:
1). find_oplock_types() - does validation of oplock types and
returns pointers to specific values.
2). delay_for_batch_oplocks() - the pass 1 phase above.
3). delay_for_exclusive_oplocks() - the pass 2 phase above
4). grant_fsp_oplock_type() - Set the correct oplock type from the requested value.
Now separated out this code should be much easier to understand
and modify. This also fixes an erroneous SMB_ASSERT which was
hidden by the previous complexity of the single delay_for_oplocks()
code.
Jeremy.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Wed Feb 2 01:52:21 CET 2011 on sn-devel-104
Otherwise a Win7 client issues this request twice (2xroundtrips)
if we return NOT_SUPPORTED. We do the same for SMB1 in call_trans2qpipeinfo()
Jeremy.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Fri Jan 28 22:53:18 CET 2011 on sn-devel-104
copy_file():
- Firstly, if the source file is zero bytes, NT_STATUS_DISK_FULL is
returned.
- Secondly, the conditional lseek is confusing. It fires when
OPENX_FILE_EXISTS_OPEN is set and I can't see why the lseek is
necessary in this case.
- Finally, the lseek error path also results in NT_STATUS_DISK_FULL.
Proposed fix for first and third point below.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Thu Jan 27 00:59:56 CET 2011 on sn-devel-104
Do this by keeping a linked list of delete on close tokens, one for
each filename that identifies a path to the dev/inode. Use the
jenkins hash of the pathname to identify the correct token.
Do the notification after we released the share mode lock. Inside notify_fname
we take out another tdb lock. With ctdb also accessing our databases, this can
lead to deadlocks. Putting this notify after the TALLOC_FREE(lck) above we
avoid locking two records simultaneously. Notifies are async and informational
only, so calling the notify_fname without holding the share mode lock should
not do any harm.
Autobuild-User: Volker Lendecke <vlendec@samba.org>
Autobuild-Date: Fri Jan 21 12:29:21 CET 2011 on sn-devel-104
Found by Michael Hanscho <samba@micha.priv.at> with a WinCE client.
Autobuild-User: Volker Lendecke <vlendec@samba.org>
Autobuild-Date: Fri Jan 14 17:42:05 CET 2011 on sn-devel-104
Since commit 7022554, smbds share a printcap cache (printer_list.tdb),
therefore ordering of events between smbd processes is important when
updating printcap cache information. Consider the following two process
example:
1) smbd1 receives HUP or printcap cache time expiry
2) smbd1 checks whether pcap needs refresh, it does
3) smbd1 marks pcap as refreshed
4) smbd1 forks child1 to obtain cups printer info
5) smbd2 receives HUP or printcap cache time expiry
6) smbd2 checks whether pcap needs refresh, it does not (due to step 3)
7) smbd2 reloads printer shares prior to child1 completion (stale pcap)
8) child1 completion, pcap cache (printer_list.tdb) is updated by smbd1
9) smbd1 reloads printer shares based on new pcap information
In this case both smbd1 and smbd2 are reliant on the pcap update
performed on child1 completion.
The prior commit "reload shares after pcap cache fill" ensures that
smbd1 only reloads printer shares following pcap update, however smbd2
continues to present shares based on stale pcap data.
This commit addresses the above problem by driving pcap cache and
printer share updates from the parent smbd process.
1) smbd0 (parent) receives a HUP or printcap cache time expiry
2) smbd0 forks child0 to obtain cups printer info
3) child0 completion, pcap cache (printer_list.tdb) is updated by smbd0
4) smbd0 reloads printer shares
5) smbd0 notifies child smbds of pcap update via message_send_all()
6) child smbds read fresh pcap data and reload printer shares
This architecture has the additional advantage that only a single
process (the parent smbd) requests printer information from the printcap
backend.
Use time_mono in housekeeping functions As suggested by Björn Jacke.
Since commit eada8f8a, updates to the cups pcap cache are performed
asynchronously - cups_cache_reload() forks a child process to request
cups printer information and notify the parent smbd on completion.
Currently printer shares are reloaded immediately following the call to
cups_cache_reload(), this occurs prior to smbd receiving new cups pcap
information from the child process. Such behaviour can result in stale
print shares as outlined in bug 7836.
This fix ensures print shares are only reloaded after new pcap data has
been received.
Pair-Programmed-With: Lars Müller <lars@samba.org>
pass this in as the &now parameter. Push this call inside of
event_add_to_select_args() to the correct point so it doesn't
get called unless needed.
Jeremy.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Thu Dec 23 01:08:11 CET 2010 on sn-devel-104
(I based it on the text in MS-SMB2, silly me :-). Fix it so incoming sequence numbers
can range over the entire allowable bitmap range. This fixes a repeatable
disconnect against Win7.
Jeremy.
strict allocation on sparse files. Files opened as POSIX opens are always
sparse.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Tue Dec 21 04:12:22 CET 2010 on sn-devel-104
allocation extent without changing end-of-file size.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Tue Dec 21 02:41:24 CET 2010 on sn-devel-104
twice (ultimately perhaps because of bug 7331 involving this compound sequence and the need
to be ready for any incoming CANCEL of the NOTIFY). This had the server thinking it had
granted more credit than it actually had, which lead to zero-credits being granted in interim
NOTIFY responses.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Mon Dec 20 20:59:55 CET 2010 on sn-devel-104
