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2bd0ea18 | 1 | /* |
cc08d43e | 2 | * Copyright (c) 2000-2001 Silicon Graphics, Inc. All Rights Reserved. |
2bd0ea18 NS |
3 | * |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of version 2 of the GNU General Public License as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it would be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
11 | * | |
12 | * Further, this software is distributed without any warranty that it is | |
13 | * free of the rightful claim of any third person regarding infringement | |
14 | * or the like. Any license provided herein, whether implied or | |
15 | * otherwise, applies only to this software file. Patent licenses, if | |
16 | * any, provided herein do not apply to combinations of this program with | |
17 | * other software, or any other product whatsoever. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License along | |
20 | * with this program; if not, write the Free Software Foundation, Inc., 59 | |
21 | * Temple Place - Suite 330, Boston MA 02111-1307, USA. | |
22 | * | |
23 | * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, | |
24 | * Mountain View, CA 94043, or: | |
25 | * | |
26 | * http://www.sgi.com | |
27 | * | |
28 | * For further information regarding this notice, see: | |
29 | * | |
30 | * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ | |
31 | */ | |
32 | ||
33 | #include <libxfs.h> | |
34 | #include "agi.h" | |
35 | #include "command.h" | |
36 | #include "data.h" | |
37 | #include "type.h" | |
38 | #include "faddr.h" | |
39 | #include "fprint.h" | |
40 | #include "field.h" | |
41 | #include "io.h" | |
42 | #include "bit.h" | |
43 | #include "output.h" | |
44 | #include "mount.h" | |
45 | ||
46 | static int agi_f(int argc, char **argv); | |
47 | static void agi_help(void); | |
48 | ||
49 | static const cmdinfo_t agi_cmd = | |
50 | { "agi", NULL, agi_f, 0, 1, 1, "[agno]", | |
51 | "set address to agi header", agi_help }; | |
52 | ||
53 | const field_t agi_hfld[] = { | |
54 | { "", FLDT_AGI, OI(0), C1, 0, TYP_NONE }, | |
55 | { NULL } | |
56 | }; | |
57 | ||
58 | #define OFF(f) bitize(offsetof(xfs_agi_t, agi_ ## f)) | |
59 | const field_t agi_flds[] = { | |
60 | { "magicnum", FLDT_UINT32X, OI(OFF(magicnum)), C1, 0, TYP_NONE }, | |
61 | { "versionnum", FLDT_UINT32D, OI(OFF(versionnum)), C1, 0, TYP_NONE }, | |
62 | { "seqno", FLDT_AGNUMBER, OI(OFF(seqno)), C1, 0, TYP_NONE }, | |
63 | { "length", FLDT_AGBLOCK, OI(OFF(length)), C1, 0, TYP_NONE }, | |
64 | { "count", FLDT_AGINO, OI(OFF(count)), C1, 0, TYP_NONE }, | |
65 | { "root", FLDT_AGBLOCK, OI(OFF(root)), C1, 0, TYP_INOBT }, | |
66 | { "level", FLDT_UINT32D, OI(OFF(level)), C1, 0, TYP_NONE }, | |
67 | { "freecount", FLDT_AGINO, OI(OFF(freecount)), C1, 0, TYP_NONE }, | |
68 | { "newino", FLDT_AGINO, OI(OFF(newino)), C1, 0, TYP_INODE }, | |
69 | { "dirino", FLDT_AGINO, OI(OFF(dirino)), C1, 0, TYP_INODE }, | |
70 | { "unlinked", FLDT_AGINONN, OI(OFF(unlinked)), | |
71 | CI(XFS_AGI_UNLINKED_BUCKETS), FLD_ARRAY, TYP_NONE }, | |
72 | { NULL } | |
73 | }; | |
74 | ||
75 | static void | |
76 | agi_help(void) | |
77 | { | |
78 | dbprintf( | |
79 | "\n" | |
80 | " set allocation group inode btree\n" | |
81 | "\n" | |
82 | " Example:\n" | |
83 | "\n" | |
84 | " agi 3 (set location to 3rd allocation group inode btree and type to 'agi')\n" | |
85 | "\n" | |
86 | " Located in the 3rd 512 byte block of each allocation group,\n" | |
87 | " the agi inode btree tracks all used/free inodes in the allocation group.\n" | |
88 | " Inodes are allocated in 16k 'chunks', each btree entry tracks a 'chunk'.\n" | |
89 | "\n" | |
90 | ); | |
91 | } | |
92 | ||
93 | static int | |
94 | agi_f( | |
95 | int argc, | |
96 | char **argv) | |
97 | { | |
98 | xfs_agnumber_t agno; | |
99 | char *p; | |
100 | ||
101 | if (argc > 1) { | |
102 | agno = (xfs_agnumber_t)strtoul(argv[1], &p, 0); | |
103 | if (*p != '\0' || agno >= mp->m_sb.sb_agcount) { | |
104 | dbprintf("bad allocation group number %s\n", argv[1]); | |
105 | return 0; | |
106 | } | |
107 | cur_agno = agno; | |
108 | } else if (cur_agno == NULLAGNUMBER) | |
109 | cur_agno = 0; | |
110 | ASSERT(typtab[TYP_AGI].typnm == TYP_AGI); | |
111 | set_cur(&typtab[TYP_AGI], XFS_AG_DADDR(mp, cur_agno, XFS_AGI_DADDR), 1, | |
112 | DB_RING_ADD, NULL); | |
113 | return 0; | |
114 | } | |
115 | ||
116 | void | |
117 | agi_init(void) | |
118 | { | |
119 | add_command(&agi_cmd); | |
120 | } | |
121 | ||
122 | /*ARGSUSED*/ | |
123 | int | |
124 | agi_size( | |
125 | void *obj, | |
126 | int startoff, | |
127 | int idx) | |
128 | { | |
129 | return bitize(mp->m_sb.sb_sectsize); | |
130 | } |