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LU-3365 lmv: support DNE with HSM.
[fs/lustre-release.git] / lustre / utils / ll_decode_filter_fid.c
1 /*
2  * GPL HEADER START
3  *
4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 only,
8  * as published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope that it will be useful, but
11  * WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  * General Public License version 2 for more details (a copy is included
14  * in the LICENSE file that accompanied this code).
15  *
16  * You should have received a copy of the GNU General Public License
17  * version 2 along with this program; If not, see
18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
19  *
20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21  * CA 95054 USA or visit www.sun.com if you need additional information or
22  * have any questions.
23  *
24  * GPL HEADER END
25  */
26 /*
27  * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
28  * Use is subject to license terms.
29  *
30  * Copyright (c) 2011, 2013, Intel Corporation.
31  */
32 /*
33  * This file is part of Lustre, http://www.lustre.org/
34  * Lustre is a trademark of Sun Microsystems, Inc.
35  *
36  * lustre/utils/ll_decode_filter_fid.c
37  *
38  * Tool for printing the OST filter_fid structure on the objects
39  * in human readable form.
40  *
41  * Author: Andreas Dilger <adilger@sun.com>
42  */
43
44
45 #include <stdio.h>
46 #include <errno.h>
47 #include <sys/types.h>
48 #include <sys/xattr.h>
49 #include <liblustre.h>
50 #include <lustre/lustre_user.h>
51
52 int main(int argc, char *argv[])
53 {
54         int rc = 0;
55         int i;
56
57         for (i = 1; i < argc; i++) {
58                 char buf[1024]; /* allow xattr that may be larger */
59                 struct filter_fid *ff = (void *)buf;
60                 int size;
61
62                 size = getxattr(argv[i], "trusted.fid", buf,
63                                 sizeof(struct filter_fid_old));
64                 if (size < 0) {
65                         fprintf(stderr, "%s: error reading fid: %s\n",
66                                 argv[i], strerror(errno));
67                         if (rc == 0)
68                                 rc = size;
69                         continue;
70                 }
71                 if (size > sizeof(struct filter_fid_old)) {
72                         fprintf(stderr, "%s: warning: fid larger than expected"
73                                 " (%d bytes), recompile?\n", argv[i], size);
74                 } else if (size > sizeof(*ff)) {
75                         struct filter_fid_old *ffo = (void *)buf;
76
77                         /* old filter_fid */
78                         printf("%s: objid="LPU64" seq="LPU64" parent="DFID
79                                " stripe=%u\n", argv[i],
80                                le64_to_cpu(ffo->ff_objid),
81                                le64_to_cpu(ffo->ff_seq),
82                                le64_to_cpu(ffo->ff_parent.f_seq),
83                                le32_to_cpu(ffo->ff_parent.f_oid), 0 /* ver */,
84                                /* this is stripe_nr actually */
85                                le32_to_cpu(ffo->ff_parent.f_ver));
86                 } else {
87                         printf("%s: parent="DFID" stripe=%u\n", argv[i],
88                                le64_to_cpu(ff->ff_parent.f_seq),
89                                le32_to_cpu(ff->ff_parent.f_oid), 0, /* ver */
90                                /* this is stripe_nr actually */
91                                le32_to_cpu(ff->ff_parent.f_ver));
92                 }
93         }
94
95         return rc;
96 }