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304 Commits

Author SHA1 Message Date
Ralph Boehme
bcb4723aac Revert "smbd: explain that/why we use the raw tevent_context for lease_timeout_handler()"
This reverts commit 52f098d38da72d6eff3c4cac61487da897a8651c.

See the discussion in

https://lists.samba.org/archive/samba-technical/2018-December/131731.html

for the reasoning behind this revert.

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2019-01-11 23:11:18 +01:00
Ralph Boehme
4036fc894f Revert "smbd: explain that/why we use the raw tevent_context for oplock_timeout_handler()"
This reverts commit e73eaa3c8004d3d8aff316cdb26b0bef85eceaca.

See the discussion in

https://lists.samba.org/archive/samba-technical/2018-December/131731.html

for the reasoning behind this revert.

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2019-01-11 23:11:17 +01:00
Ralph Boehme
5afd19198b Revert "smbd: explain that/why we use the raw tevent_context for do_break_to_none()"
This reverts commit 1d5210b615035e46b90758ac7aa4ceec9174bee5.

See the discussion in

https://lists.samba.org/archive/samba-technical/2018-December/131731.html

for the reasoning behind this revert.

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2019-01-11 23:11:17 +01:00
Volker Lendecke
b77fae3281 smbd: Don't try to release a kernel oplock for a leased file
If we have

[global]
  smb2 leases = yes
  kernel oplocks = no
[share]
  kernel oplocks = yes

for clients requesting leases we don't even try to acquire kernel
oplocks, because the kernel API is not compatible. Kernel oplocks are
per fd, leases are roughly "per inode".

We don't however special-case the LEASE_OPLOCK case in
release_file_oplock, leading to nasty error messages like "bad file
descriptor" on the fcntl(fd,F_SETLEASE,F_UNLCK) call. They are
harmless, but they raise eyebrows.

To simplify the if-condition, I factored out the kernel call and
applied early returns.

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 Dec 18 02:00:44 CET 2018 on sn-devel-144
2018-12-18 02:00:44 +01:00
Andreas Schneider
95432e30e9 s3:smbd: Use #ifdef instead of #if for config.h definitions
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>
2018-11-28 23:19:24 +01:00
Volker Lendecke
cff1b31c2a smbd: Simplify downgrade_share_lease
Coalesce the NT_STATUS_OPLOCK_BREAK_IN_PROGRESS case into just one
if-condition

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>

Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Tue Oct  2 22:22:37 CEST 2018 on sn-devel-144
2018-10-02 22:22:37 +02:00
Volker Lendecke
a93aa1511f smbd: Move downgrade_share_lease into downgrade_lease
The next step will simplify the logic of the code.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2018-10-02 18:13:20 +02:00
Volker Lendecke
56139b8ec6 smbd: Simplify downgrade_lease
To me, the "additive" SMB2_LEASE_WRITE|SMB2_LEASE_HANDLE is easier to
read than the negated ~SMB2_LEASE_READ.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2018-10-02 18:13:20 +02:00
Volker Lendecke
664808af09 smbd: Slightly simplify downgrade_lease()
As much as I dislike }else{ and prefer early returns, I even more
dislike asking for the same condition in two different ways.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2018-10-02 18:13:20 +02:00
Volker Lendecke
4980e60dfc smbd: Use find_share_mode_lease() in downgrade_share_lease
Simple simplification: In locking/ we did not have the direct
reference to find_share_mode_lock.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2018-10-02 18:13:20 +02:00
Volker Lendecke
0e7c546463 smbd: Move downgrade_share_lease() to smbd/oplock.c
This function is pretty closely entangled with its only caller. In
particular the NT_STATUS_OPLOCK_BREAK_IN_PROGRESS triggers acitivity
in the caller, and that's the only case where "*_l" is being set to
non-NULL. Prepare for cleanup

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2018-10-02 18:13:20 +02:00
Volker Lendecke
551f85464b smbd: Add a paranoia check for leases
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2018-09-14 07:49:13 +02:00
Volker Lendecke
5ef3610f7b smbd: Remove an unneeded #include
ndr_open_files already includes open_files.h

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2018-09-11 18:36:23 +02:00
Volker Lendecke
9108572039 smbd: Simplify logic in fsp_lease_update
One if-condition is better than two

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2018-09-07 17:26:18 +02:00
Volker Lendecke
c2281341cb smbd: Factor out file_has_read_oplocks()
Why? This makes it clearer to me that we're not interested in the actual
number of read oplocks. We only want to know if there are any read
oplocks at all.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2018-09-07 17:26:17 +02:00
Christof Schmitt
e5e66191f2 smbd: Remove unused KOPLOCK flags
This effectively reverts commit 17eba16b. It looks like these flags have
been introduced as part of the onefs support which has been removed
again. As there is no other use for the flags, remove them.

Signed-off-by: Christof Schmitt <cs@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>

Autobuild-User(master): Christof Schmitt <cs@samba.org>
Autobuild-Date(master): Sat Aug 25 03:23:05 CEST 2018 on sn-devel-144
2018-08-25 03:23:05 +02:00
Volker Lendecke
7460d9b97e smbd: Remove koplocks->contend_level2 callbacks
This was only implemented by onefs in this way. If we get around to use
for example fanotify or something similar, we can either re-add them or
do it in a different way. For now, simplify the code.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>

Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Wed Aug 22 00:57:31 CEST 2018 on sn-devel-144
2018-08-22 00:57:31 +02:00
Volker Lendecke
04f62984fe smbd: Fix a typo
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2018-08-17 18:25:08 +02:00
Jeremy Allison
7f1de9ff09 s3: smbd: SGI IRIX is officially dead. Remove the kernel oplock code for IRIX.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: David Disseldorp <ddiss@samba.org>
2018-07-25 03:24:39 +02:00
Stefan Metzmacher
1d5210b615 smbd: explain that/why we use the raw tevent_context for do_break_to_none()
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2018-06-18 08:59:19 +02:00
Stefan Metzmacher
e73eaa3c80 smbd: explain that/why we use the raw tevent_context for oplock_timeout_handler()
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2018-06-18 08:59:19 +02:00
Stefan Metzmacher
52f098d38d smbd: explain that/why we use the raw tevent_context for lease_timeout_handler()
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2018-06-18 08:59:19 +02:00
Stefan Metzmacher
d39f6ce3b1 smbd: replace xconn->ev_ctx with xconn->client->raw_ev_ctx
This is the same pointer and we don't have a lot of callers,
so we can just use one pointer.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2018-06-18 08:59:18 +02:00
Volker Lendecke
f7e65719a4 smbd: Pass "file_id" explicitly to send_break_to_none
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2018-02-13 00:26:43 +01:00
Volker Lendecke
d9e5148470 smbd: Avoid a dependency on share_mode_entry->id
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2018-02-13 00:26:43 +01:00
Volker Lendecke
b7e29d04c6 smbd: Pass "file_id" explicitly to message_to_share_mode_entry()
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2018-02-13 00:26:43 +01:00
Volker Lendecke
fc424b28cd smbd: Pass "file_id" explicitly into share_mode_entry_to_message()
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2018-02-13 00:26:43 +01:00
Jeremy Allison
114f5da2fa s3: smbd: Use identical logic to test for kernel oplocks on a share.
Due to inconsistent use of lp_kernel_oplocks() we could miss kernel
oplocks being on/off in some of our oplock handling code, and thus
use the wrong logic.

Ensure all logic around koplocks and lp_kernel_oplocks() is consistent.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=13193

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>

Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Thu Jan  4 16:03:38 CET 2018 on sn-devel-144
2018-01-04 16:03:38 +01:00
Ralph Boehme
19b938e1fa s3/smbd: fix exclusive lease optimisation
We need to expect any amount of "stat" opens on the file without
triggering an assert.

This is the correct fix for bug #11844. I guess we haven't seens this
very often before bug #12766 got fixed, because most clients were using
LEASES instead of OPLOCKS.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=12798

See also:
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11844
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12766

Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>

Signed-off-by: Ralph Boehme <slow@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2017-05-28 14:50:18 +02:00
Ralph Boehme
a50343779a s3/smbd: update exclusive oplock optimisation to the lease area
Update an optimisation in update_num_read_oplocks() that checks for
exclusive oplocks to the lease area.

The idea of the optimisation is to avoid expensive db queries in
brlock.tdb if we *know* we're the only open.

Bug: https://bugzilla.samba.org/show_bug.cgi?id=12766

Signed-off-by: Ralph Boehme <slow@samba.org>
Signed-off-by: Jeremy Allison <jra@samba.org>

Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Sat May  6 22:58:47 CEST 2017 on sn-devel-144
2017-05-06 22:58:47 +02:00
Ralph Boehme
0a4a08ad1c s3/smbd: update exclusive oplock optimisation to the lease area
This is similar to 9533a55ee5ffe430589dcea845851b84876ef656 but this
time in the contend_level2_oplocks_begin_default() function.

The idea of the optimisation is to avoid expensive db queries in
locking.tdb if we *know* we're the only open.

Bug: https://bugzilla.samba.org/show_bug.cgi?id=12766

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2017-05-06 19:01:15 +02:00
Jeremy Allison
125c78ad0b s3: locking: Move two leases functions into a new file.
map_oplock_to_lease_type(), fsp_lease_type().

BUG: https://bugzilla.samba.org/show_bug.cgi?id=12628

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2017-03-15 16:14:08 +01:00
Ralph Boehme
6924e72ade s3/smbd: add const to get_lease_type() args
Bug: https://bugzilla.samba.org/show_bug.cgi?id=7537

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2017-03-10 03:28:25 +01:00
Volker Lendecke
9af73f62ce lib: Add lib/util/server_id.h
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2017-01-22 18:30:11 +01:00
Jeremy Allison
cb394abe52 smbd: oplock: Factor out internals of remove_oplock() into new remove_oplock_under_lock().
Allows this to be called elsewhere.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=12139

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
2016-08-11 19:55:11 +02:00
Jeremy Allison
de7180151f smbd: oplock: Fixup debug messages inside remove_oplock().
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12139

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
2016-08-11 19:55:11 +02:00
Garming Sam
555db4b8dd AddressSanitizer: Initialize for smbd/oplock.c
Signed-off-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Volker Lendecke <vl@samba.org>
2016-07-25 13:56:11 +02:00
Volker Lendecke
a5d49b7ce1 smbd: Fix an assert
This might stumble over stale entries

Bug: https://bugzilla.samba.org/show_bug.cgi?id=11844
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2016-05-16 19:52:21 +02:00
Christian Ambach
eda6aaf153 s3:smbd/oplock obey kernel oplock setting when releasing oplocks
otherwise smbd asks the kernel to release an oplock that was never requested

Bug: https://bugzilla.samba.org/show_bug.cgi?id=11400

Signed-off-by: Christian Ambach <ambi@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Wed Jan  6 08:58:56 CET 2016 on sn-devel-144
2016-01-06 08:58:56 +01:00
Paul Wayper
ac0e575b95 Spelling correction: exlusive -> exclusive
Signed-off-by: Paul Wayper <paulway@redhat.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Volker Lendecke <vl@samba.org>
2015-07-08 12:51:17 +02:00
Richard Sharpe
6abd986704 Convert all uses of uint8/16/32 to _t in source3/smbd.
Signed-off-by: Richard Sharpe <rsharpe@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2015-05-06 04:14:14 +02:00
Volker Lendecke
06f4ba3217 lib: Remove server_id_str()
Call server_id_str_buf instead

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 Apr 28 20:48:01 CEST 2015 on sn-devel-104
2015-04-28 20:48:01 +02:00
Volker Lendecke
02f2684dd8 s3:smbd: Implementation of SMB2.1 and SMB3.0 leases.
Pair-Programmed-With: Jeremy Allison <jra@samba.org>
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>

Signed-off-by: Volker Lendecke <vl@samba.org>
Signed-off-by: Jeremy Allison <jra@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
2014-12-04 05:45:10 +01:00
Volker Lendecke
91b2488c9a s3:smbd: add lease related helper functions to oplock.c
Pair-Programmed-With: Jeremy Allison <jra@samba.org>
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>

Signed-off-by: Volker Lendecke <vl@samba.org>
Signed-off-by: Jeremy Allison <jra@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
2014-12-04 05:45:10 +01:00
Volker Lendecke
b72fca52de s3:smbd: add fsp_lease_type() and get_lease_type() helper functions
These convert the oplock state into SMB2_LEASE_ flags.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2014-12-04 05:45:10 +01:00
Volker Lendecke
e761c80f65 s3:smbd: factor out a send_break_to_none() helper function
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2014-12-04 05:45:09 +01:00
Volker Lendecke
837e29035c s3:locking: convert brl_have_read field to brl_num_read.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2014-11-11 21:41:05 +01:00
Stefan Metzmacher
fbe40d21c8 s3:smbd: fix file corruption using "write cache size != 0"
A client can:
- open a handle (h1)
- write some data to h1.
- open a 2nd handle h2 (downgrades both handles to level II)
- try to read the data on h2 (this gets old data)

Bug: https://bugzilla.samba.org/show_bug.cgi?id=10921

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): Thu Nov  6 13:09:38 CET 2014 on sn-devel-104
2014-11-06 13:09:38 +01:00
Stefan Metzmacher
d7e66e59b0 s3:smbd: use fsp->conn->sconn->client->connections to send SMB1 oplock breaks
This means we use the first and only connection.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
2014-09-19 09:15:12 +02:00
Stefan Metzmacher
4b9f17eca7 s3:smbd: pass smbXsrv_connection to srv_send_smb()
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
2014-09-19 09:15:11 +02:00