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git.ipfire.org Git - thirdparty/xfsprogs-dev.git/blob - db/agf.c
2 * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
31 static int agf_f(int argc
, char **argv
);
32 static void agf_help(void);
34 static const cmdinfo_t agf_cmd
=
35 { "agf", NULL
, agf_f
, 0, 1, 1, N_("[agno]"),
36 N_("set address to agf header"), agf_help
};
38 const field_t agf_hfld
[] = {
39 { "", FLDT_AGF
, OI(0), C1
, 0, TYP_NONE
},
43 #define OFF(f) bitize(offsetof(xfs_agf_t, agf_ ## f))
44 #define SZ(f) bitszof(xfs_agf_t, agf_ ## f)
45 const field_t agf_flds
[] = {
46 { "magicnum", FLDT_UINT32X
, OI(OFF(magicnum
)), C1
, 0, TYP_NONE
},
47 { "versionnum", FLDT_UINT32D
, OI(OFF(versionnum
)), C1
, 0, TYP_NONE
},
48 { "seqno", FLDT_AGNUMBER
, OI(OFF(seqno
)), C1
, 0, TYP_NONE
},
49 { "length", FLDT_AGBLOCK
, OI(OFF(length
)), C1
, 0, TYP_NONE
},
50 { "roots", FLDT_AGBLOCK
, OI(OFF(roots
)), CI(XFS_BTNUM_AGF
),
51 FLD_ARRAY
|FLD_SKIPALL
, TYP_NONE
},
52 { "bnoroot", FLDT_AGBLOCK
,
53 OI(OFF(roots
) + XFS_BTNUM_BNO
* SZ(roots
[XFS_BTNUM_BNO
])), C1
, 0,
55 { "cntroot", FLDT_AGBLOCK
,
56 OI(OFF(roots
) + XFS_BTNUM_CNT
* SZ(roots
[XFS_BTNUM_CNT
])), C1
, 0,
58 { "levels", FLDT_UINT32D
, OI(OFF(levels
)), CI(XFS_BTNUM_AGF
),
59 FLD_ARRAY
|FLD_SKIPALL
, TYP_NONE
},
60 { "bnolevel", FLDT_UINT32D
,
61 OI(OFF(levels
) + XFS_BTNUM_BNO
* SZ(levels
[XFS_BTNUM_BNO
])), C1
, 0,
63 { "cntlevel", FLDT_UINT32D
,
64 OI(OFF(levels
) + XFS_BTNUM_CNT
* SZ(levels
[XFS_BTNUM_CNT
])), C1
, 0,
66 { "flfirst", FLDT_UINT32D
, OI(OFF(flfirst
)), C1
, 0, TYP_NONE
},
67 { "fllast", FLDT_UINT32D
, OI(OFF(fllast
)), C1
, 0, TYP_NONE
},
68 { "flcount", FLDT_UINT32D
, OI(OFF(flcount
)), C1
, 0, TYP_NONE
},
69 { "freeblks", FLDT_EXTLEN
, OI(OFF(freeblks
)), C1
, 0, TYP_NONE
},
70 { "longest", FLDT_EXTLEN
, OI(OFF(longest
)), C1
, 0, TYP_NONE
},
71 { "btreeblks", FLDT_UINT32D
, OI(OFF(btreeblks
)), C1
, 0, TYP_NONE
},
72 { "uuid", FLDT_UUID
, OI(OFF(uuid
)), C1
, 0, TYP_NONE
},
73 { "lsn", FLDT_UINT64X
, OI(OFF(lsn
)), C1
, 0, TYP_NONE
},
74 { "crc", FLDT_CRC
, OI(OFF(crc
)), C1
, 0, TYP_NONE
},
83 " set allocation group free block list\n"
87 " agf 2 - move location to AGF in 2nd filesystem allocation group\n"
89 " Located in the second sector of each allocation group, the AGF\n"
90 " contains the root of two different freespace btrees:\n"
91 " The 'cnt' btree keeps track freespace indexed on section size.\n"
92 " The 'bno' btree tracks sections of freespace indexed on block number.\n"
105 agno
= (xfs_agnumber_t
)strtoul(argv
[1], &p
, 0);
106 if (*p
!= '\0' || agno
>= mp
->m_sb
.sb_agcount
) {
107 dbprintf(_("bad allocation group number %s\n"), argv
[1]);
111 } else if (cur_agno
== NULLAGNUMBER
)
113 ASSERT(typtab
[TYP_AGF
].typnm
== TYP_AGF
);
114 set_cur(&typtab
[TYP_AGF
],
115 XFS_AG_DADDR(mp
, cur_agno
, XFS_AGF_DADDR(mp
)),
116 XFS_FSS_TO_BB(mp
, 1), DB_RING_ADD
, NULL
);
123 add_command(&agf_cmd
);
132 return bitize(mp
->m_sb
.sb_sectsize
);