/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
 * vim:expandtab:shiftwidth=8:tabstop=8:
 *
 *  Copyright (C) 2001 Cluster File Systems, Inc. <braam@clusterfs.com>
 *
 *   This file is part of Lustre, http://www.lustre.org.
 *
 *   Lustre is free software; you can redistribute it and/or
 *   modify it under the terms of version 2 of the GNU General Public
 *   License as published by the Free Software Foundation.
 *
 *   Lustre 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 Lustre; if not, write to the Free Software
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * Lustre public user-space interface definitions.
 */

#ifndef _LUSTRE_USER_H
#define _LUSTRE_USER_H
#include <asm/types.h>

#define LL_IOC_GETFLAGS                 _IOR ('f', 151, long)
#define LL_IOC_SETFLAGS                 _IOW ('f', 152, long)
#define LL_IOC_CLRFLAGS                 _IOW ('f', 153, long)
#define LL_IOC_LOV_SETSTRIPE            _IOW ('f', 154, long)
#define LL_IOC_LOV_GETSTRIPE            _IOW ('f', 155, long)
#define LL_IOC_LOV_SETEA                _IOW ('f', 156, long)
#define LL_IOC_RECREATE_OBJ             _IOW ('f', 157, long)
#define LL_IOC_GROUP_LOCK               _IOW ('f', 158, long)
#define LL_IOC_GROUP_UNLOCK             _IOW ('f', 159, long)

#define IOC_MDC_TYPE            'i'
#define IOC_MDC_GETSTRIPE       _IOWR(IOC_MDC_TYPE, 21, struct lov_mds_md *)

#define O_LOV_DELAY_CREATE 0100000000  /* hopefully this does not conflict */

#define LL_FILE_IGNORE_LOCK             0x00000001
#define LL_FILE_GROUP_LOCKED            0x00000002

#define LOV_USER_MAGIC_V1 0x0BD10BD0
#define LOV_USER_MAGIC    LOV_USER_MAGIC_V1

#define LOV_PATTERN_RAID0 0x001
#define LOV_PATTERN_RAID1 0x002
#define LOV_PATTERN_FIRST 0x100

#define lov_user_ost_data lov_user_ost_data_v1
struct lov_user_ost_data_v1 {     /* per-stripe data structure */
        __u64 l_object_id;	  /* OST object ID */
        __u64 l_object_gr;        /* OST object group (creating MDS number) */
        __u32 l_ost_generation;   /* generation of this OST index */
        __u16 l_ost_idx;          /* OST index in LOV */
        __u16 l_reserved2;
} __attribute__((packed));

#define lov_user_md lov_user_md_v1
struct lov_user_md_v1 {           /* LOV EA user data (host-endian) */
        __u32 lmm_magic;          /* magic number = LOV_USER_MAGIC_V1 */
        __u32 lmm_pattern;        /* LOV_PATTERN_RAID0, LOV_PATTERN_RAID1 */
        __u64 lmm_object_id;      /* LOV object ID */
        __u64 lmm_object_gr;      /* LOV object group */
        __u32 lmm_stripe_size;    /* size of stripe in bytes */
        __u16 lmm_stripe_count;   /* num stripes in use for this object */
        __u16 lmm_stripe_offset;  /* starting stripe offset in lmm_objects */
        struct lov_user_ost_data_v1 lmm_objects[0]; /* per-stripe data */
} __attribute__((packed));

#endif /* _LUSTRE_USER_H */