2 Unix SMB/CIFS implementation.
3 SMB parameters and setup, plus a whole lot more.
5 Copyright (C) Jeremy Allison 2006
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 /* passed to br lock code - the UNLOCK_LOCK should never be stored into the tdb
26 and is used in calculating POSIX unlock ranges only. We differentiate between
27 PENDING read and write locks to allow posix lock downgrades to trigger a lock
30 enum brl_type
{READ_LOCK
, WRITE_LOCK
, PENDING_READ_LOCK
, PENDING_WRITE_LOCK
, UNLOCK_LOCK
};
31 enum brl_flavour
{WINDOWS_LOCK
= 0, POSIX_LOCK
= 1};
33 #define IS_PENDING_LOCK(type) ((type) == PENDING_READ_LOCK || (type) == PENDING_WRITE_LOCK)
35 /* This contains elements that differentiate locks. The smbpid is a
36 client supplied pid, and is essentially the locking context for
45 /* The key used in the brlock database. */
54 struct byte_range_lock
{
55 struct files_struct
*fsp
;
56 unsigned int num_locks
;
60 struct lock_struct
*lock_data
;
63 #define BRLOCK_FN_CAST() \
64 void (*)(SMB_DEV_T dev, SMB_INO_T ino, struct server_id pid, \
65 enum brl_type lock_type, \
66 enum brl_flavour lock_flav, \
67 br_off start, br_off size)
69 #define BRLOCK_FN(fn) \
70 void (*fn)(SMB_DEV_T dev, SMB_INO_T ino, struct server_id pid, \
71 enum brl_type lock_type, \
72 enum brl_flavour lock_flav, \
73 br_off start, br_off size)
75 /* Internal structure in brlock.tdb.
76 The data in brlock records is an unsorted linear array of these
77 records. It is unnecessary to store the count as tdb provides the
81 struct lock_context context
;
85 enum brl_type lock_type
;
86 enum brl_flavour lock_flav
;
89 #endif /* _LOCKING_H_ */