1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2001 Cluster File Systems, Inc. <braam@clusterfs.com>
6 * This file is part of Lustre, http://www.lustre.org.
8 * Lustre is free software; you can redistribute it and/or
9 * modify it under the terms of version 2 of the GNU General Public
10 * License as published by the Free Software Foundation.
12 * Lustre is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Lustre; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 * Lustre public user-space interface definitions.
24 #ifndef _LUSTRE_USER_H
25 #define _LUSTRE_USER_H
26 #include <asm/types.h>
28 #define IOC_MDC_TYPE 'i'
29 #define IOC_MDC_GETSTRIPE _IOWR(IOC_MDC_TYPE, 21, struct lov_mds_md *)
31 #define LL_IOC_GETFLAGS _IOR ('f', 151, long)
32 #define LL_IOC_SETFLAGS _IOW ('f', 152, long)
33 #define LL_IOC_CLRFLAGS _IOW ('f', 153, long)
34 #define LL_IOC_LOV_SETSTRIPE _IOW ('f', 154, long)
35 #define LL_IOC_LOV_GETSTRIPE _IOW ('f', 155, long)
36 #define LL_IOC_LOV_SETEA _IOW ('f', 156, long)
37 #define LL_IOC_RECREATE_OBJ _IOW ('f', 157, long)
39 #define O_LOV_DELAY_CREATE 0100000000 /* hopefully this does not conflict */
41 #define LL_FILE_IGNORE_LOCK 0x00000001
43 #define LOV_USER_MAGIC_V1 0x0BD10BD0
44 #define LOV_USER_MAGIC LOV_USER_MAGIC_V1
46 #define LOV_PATTERN_RAID0 0x001
47 #define LOV_PATTERN_RAID1 0x002
48 #define LOV_PATTERN_FIRST 0x100
50 #define lov_user_ost_data lov_user_ost_data_v1
51 struct lov_user_ost_data_v1 { /* per-stripe data structure */
52 __u64 l_object_id; /* OST object ID */
53 __u64 l_object_gr; /* OST object group (creating MDS number) */
54 __u32 l_ost_generation; /* generation of this OST index */
55 __u16 l_ost_idx; /* OST index in LOV */
57 } __attribute__((packed));
59 #define lov_user_md lov_user_md_v1
60 struct lov_user_md_v1 { /* LOV EA user data (host-endian) */
61 __u32 lmm_magic; /* magic number = LOV_USER_MAGIC_V1 */
62 __u32 lmm_pattern; /* LOV_PATTERN_RAID0, LOV_PATTERN_RAID1 */
63 __u64 lmm_object_id; /* LOV object ID */
64 __u64 lmm_object_gr; /* LOV object group */
65 __u32 lmm_stripe_size; /* size of stripe in bytes */
66 __u16 lmm_stripe_count; /* num stripes in use for this object */
67 __u16 lmm_stripe_offset; /* starting stripe offset in lmm_objects */
68 struct lov_user_ost_data_v1 lmm_objects[0]; /* per-stripe data */
69 } __attribute__((packed));
71 extern int op_create_file(char *name, long stripe_size, int stripe_offset,
73 extern int get_file_stripe(char *path, struct lov_user_md *lum);
75 #endif /* _LUSTRE_USER_H */