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/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 only,
* as published by the Free Software Foundation.
*
* 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 version 2 for more details (a copy is included
* in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
* http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
* GPL HEADER END
*/
/*
* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*
* lustre/include/lustre/libiam.h
*
* iam user level library
*
* Author: Wang Di <wangdi@clusterfs.com>
* Author: Nikita Danilov <nikita@clusterfs.com>
* Author: Fan Yong <fanyong@clusterfs.com>
*/
/*
* lustre/libiam.h
*/
#ifndef __IAM_ULIB_H__
#define __IAM_ULIB_H__
/** \defgroup libiam libiam
*
* @{
*/
#define DX_FMT_NAME_LEN 16
enum iam_fmt_t {
FMT_LFIX,
FMT_LVAR
};
struct iam_uapi_info {
__u16 iui_keysize;
__u16 iui_recsize;
__u16 iui_ptrsize;
__u16 iui_height;
char iui_fmt_name[DX_FMT_NAME_LEN];
};
/*
* Creat an iam file, but do NOT open it.
* Return 0 if success, else -1.
*/
int iam_creat(char *filename, enum iam_fmt_t fmt,
int blocksize, int keysize, int recsize, int ptrsize);
/*
* Open an iam file, but do NOT creat it if the file doesn't exist.
* Please use iam_creat for creating the file before use iam_open.
* Return file id (fd) if success, else -1.
*/
int iam_open(char *filename, struct iam_uapi_info *ua);
/*
* Close file opened by iam_open.
*/
int iam_close(int fd);
/*
* Please use iam_open before use this function.
*/
int iam_insert(int fd, struct iam_uapi_info *ua,
int key_need_convert, char *keybuf,
int rec_need_convert, char *recbuf);
/*
* Please use iam_open before use this function.
*/
int iam_lookup(int fd, struct iam_uapi_info *ua,
int key_need_convert, char *key_buf,
int *keysize, char *save_key,
int rec_need_convert, char *rec_buf,
int *recsize, char *save_rec);
/*
* Please use iam_open before use this function.
*/
int iam_delete(int fd, struct iam_uapi_info *ua,
int key_need_convert, char *keybuf,
int rec_need_convert, char *recbuf);
/*
* Please use iam_open before use this function.
*/
int iam_it_start(int fd, struct iam_uapi_info *ua,
int key_need_convert, char *key_buf,
int *keysize, char *save_key,
int rec_need_convert, char *rec_buf,
int *recsize, char *save_rec);
/*
* Please use iam_open before use this function.
*/
int iam_it_next(int fd, struct iam_uapi_info *ua,
int key_need_convert, char *key_buf,
int *keysize, char *save_key,
int rec_need_convert, char *rec_buf,
int *recsize, char *save_rec);
/*
* Please use iam_open before use this function.
*/
int iam_it_stop(int fd, struct iam_uapi_info *ua,
int key_need_convert, char *keybuf,
int rec_need_convert, char *recbuf);
/*
* Change iam file mode.
*/
int iam_polymorph(char *filename, unsigned long mode);
/** @} libiam */
#endif
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