From 8daa83a594a2e98f39d764422bfbdbc62c9efd44 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 19:20:00 +0200 Subject: Adding upstream version 2:4.20.0+dfsg. Signed-off-by: Daniel Baumann --- source3/include/locking.h | 77 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 source3/include/locking.h (limited to 'source3/include/locking.h') diff --git a/source3/include/locking.h b/source3/include/locking.h new file mode 100644 index 0000000..f9eb502 --- /dev/null +++ b/source3/include/locking.h @@ -0,0 +1,77 @@ +/* + Unix SMB/CIFS implementation. + SMB parameters and setup, plus a whole lot more. + + Copyright (C) Jeremy Allison 2006 + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ + +#ifndef _LOCKING_H +#define _LOCKING_H + +/* passed to br lock code - the UNLOCK_LOCK should never be stored into the tdb + and is used in calculating POSIX unlock ranges only. We differentiate between + PENDING read and write locks to allow posix lock downgrades to trigger a lock + re-evaluation. */ + +enum brl_type {READ_LOCK, WRITE_LOCK, UNLOCK_LOCK}; +enum brl_flavour {WINDOWS_LOCK = 0, POSIX_LOCK = 1}; + +#include "librpc/gen_ndr/server_id.h" +#include "librpc/gen_ndr/misc.h" + +/* This contains elements that differentiate locks. The smbpid is a + client supplied pid, and is essentially the locking context for + this client */ + +struct lock_context { + uint64_t smblctx; + uint32_t tid; + struct server_id pid; +}; + +struct files_struct; + +#include "lib/file_id.h" + +struct byte_range_lock; +typedef uint64_t br_off; + +/* Internal structure in brlock.tdb. + The data in brlock records is an unsorted linear array of these + records. It is unnecessary to store the count as tdb provides the + size of the record */ + +struct lock_struct { + struct lock_context context; + br_off start; + br_off size; + uint64_t fnum; + enum brl_type lock_type; + enum brl_flavour lock_flav; +}; + +struct smbd_lock_element { + struct GUID req_guid; + uint64_t smblctx; + enum brl_type brltype; + enum brl_flavour lock_flav; + uint64_t offset; + uint64_t count; +}; + +struct share_mode_lock; + +#endif /* _LOCKING_H_ */ -- cgit v1.2.3