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/*
Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
#ifndef _FD_LK_H
#define _FD_LK_H
#include "glusterfs/fd.h"
#include "glusterfs/locking.h"
#include "glusterfs/list.h"
#include "glusterfs/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;
gf_atomic_t 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_create(void);
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);
gf_boolean_t
fd_lk_ctx_empty(fd_lk_ctx_t *lk_ctx);
#endif /* _FD_LK_H */
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