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/*
Copyright (c) 2011-2012 Gluster, Inc. <http://www.gluster.com>
This file is part of GlusterFS.
GlusterFS 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.
GlusterFS 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
<http://www.gnu.org/licenses/>.
*/
#ifndef _FD_LK_H
#define _FD_LK_H
#include "fd.h"
#include "locking.h"
#include "list.h"
#include "logging.h"
#include "mem-pool.h"
#include "mem-types.h"
#include "glusterfs.h"
#define get_lk_type(type) \
type == F_UNLCK ? "F_UNLCK" : (type == F_RDLCK ? "F_RDLCK" : "F_WRLCK")
#define get_lk_cmd(cmd) \
cmd == F_SETLKW ? "F_SETLKW" : (cmd == F_SETLK ? "F_SETLK" : "F_GETLK")
struct _fd;
struct fd_lk_ctx {
struct list_head lk_list;
int ref;
gf_lock_t lock;
};
typedef struct fd_lk_ctx fd_lk_ctx_t;
struct fd_lk_ctx_node {
int32_t cmd;
struct gf_flock user_flock;
off_t fl_start;
off_t fl_end;
short fl_type;
struct list_head next;
};
typedef struct fd_lk_ctx_node fd_lk_ctx_node_t;
fd_lk_ctx_t *
_fd_lk_ctx_ref (fd_lk_ctx_t *lk_ctx);
fd_lk_ctx_t *
fd_lk_ctx_ref (fd_lk_ctx_t *lk_ctx);
fd_lk_ctx_t *
fd_lk_ctx_try_ref (fd_lk_ctx_t *lk_ctx);
fd_lk_ctx_t *
fd_lk_ctx_create ();
int
fd_lk_insert_and_merge (struct _fd *lk_ctx, int32_t cmd,
struct gf_flock *flock);
int
fd_lk_ctx_unref (fd_lk_ctx_t *lk_ctx);
#endif /* _FD_LK_H */
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