db/agf.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
   4  * All Rights Reserved.
   5  */
   6
   7 #include "libxfs.h"
   8 #include "command.h"
   9 #include "type.h"
  10 #include "faddr.h"
  11 #include "fprint.h"
  12 #include "field.h"
  13 #include "io.h"
  14 #include "bit.h"
  15 #include "output.h"
  16 #include "init.h"
  17 #include "agf.h"
  18
  19 static int agf_f(int argc, char **argv);
  20 static void agf_help(void);
  21
  22 static const cmdinfo_t agf_cmd =
  23         { "agf", NULL, agf_f, 0, 1, 1, N_("[agno]"),
  24           N_("set address to agf header"), agf_help };
  25
  26 const field_t   agf_hfld[] = {
  27         { "", FLDT_AGF, OI(0), C1, 0, TYP_NONE },
  28         { NULL }
  29 };
  30
  31 #define OFF(f)  bitize(offsetof(xfs_agf_t, agf_ ## f))
  32 #define SZ(f)   bitszof(xfs_agf_t, agf_ ## f)
  33 const field_t   agf_flds[] = {
  34         { "magicnum", FLDT_UINT32X, OI(OFF(magicnum)), C1, 0, TYP_NONE },
  35         { "versionnum", FLDT_UINT32D, OI(OFF(versionnum)), C1, 0, TYP_NONE },
  36         { "seqno", FLDT_AGNUMBER, OI(OFF(seqno)), C1, 0, TYP_NONE },
  37         { "length", FLDT_AGBLOCK, OI(OFF(length)), C1, 0, TYP_NONE },
  38         { "roots", FLDT_AGBLOCK, OI(OFF(roots)), CI(XFS_BTNUM_AGF),
  39           FLD_ARRAY|FLD_SKIPALL, TYP_NONE },
  40         { "bnoroot", FLDT_AGBLOCK,
  41           OI(OFF(roots) + XFS_BTNUM_BNO * SZ(roots[XFS_BTNUM_BNO])), C1, 0,
  42           TYP_BNOBT },
  43         { "cntroot", FLDT_AGBLOCK,
  44           OI(OFF(roots) + XFS_BTNUM_CNT * SZ(roots[XFS_BTNUM_CNT])), C1, 0,
  45           TYP_CNTBT },
  46         { "rmaproot", FLDT_AGBLOCKNZ,
  47           OI(OFF(roots) + XFS_BTNUM_RMAP * SZ(roots[XFS_BTNUM_RMAP])), C1, 0,
  48           TYP_RMAPBT },
  49         { "refcntroot", FLDT_AGBLOCKNZ,
  50           OI(OFF(refcount_root)), C1, 0,
  51           TYP_REFCBT },
  52         { "levels", FLDT_UINT32D, OI(OFF(levels)), CI(XFS_BTNUM_AGF),
  53           FLD_ARRAY|FLD_SKIPALL, TYP_NONE },
  54         { "bnolevel", FLDT_UINT32D,
  55           OI(OFF(levels) + XFS_BTNUM_BNO * SZ(levels[XFS_BTNUM_BNO])), C1, 0,
  56           TYP_NONE },
  57         { "cntlevel", FLDT_UINT32D,
  58           OI(OFF(levels) + XFS_BTNUM_CNT * SZ(levels[XFS_BTNUM_CNT])), C1, 0,
  59           TYP_NONE },
  60         { "rmaplevel", FLDT_UINT32D,
  61           OI(OFF(levels) + XFS_BTNUM_RMAP * SZ(levels[XFS_BTNUM_RMAP])), C1, 0,
  62           TYP_NONE },
  63         { "refcntlevel", FLDT_UINT32D,
  64           OI(OFF(refcount_level)), C1, 0,
  65           TYP_NONE },
  66         { "rmapblocks", FLDT_UINT32D,
  67           OI(OFF(rmap_blocks)), C1, 0,
  68           TYP_NONE },
  69         { "refcntblocks", FLDT_UINT32D,
  70           OI(OFF(refcount_blocks)), C1, 0,
  71           TYP_NONE },
  72         { "flfirst", FLDT_UINT32D, OI(OFF(flfirst)), C1, 0, TYP_NONE },
  73         { "fllast", FLDT_UINT32D, OI(OFF(fllast)), C1, 0, TYP_NONE },
  74         { "flcount", FLDT_UINT32D, OI(OFF(flcount)), C1, 0, TYP_NONE },
  75         { "freeblks", FLDT_EXTLEN, OI(OFF(freeblks)), C1, 0, TYP_NONE },
  76         { "longest", FLDT_EXTLEN, OI(OFF(longest)), C1, 0, TYP_NONE },
  77         { "btreeblks", FLDT_UINT32D, OI(OFF(btreeblks)), C1, 0, TYP_NONE },
  78         { "uuid", FLDT_UUID, OI(OFF(uuid)), C1, 0, TYP_NONE },
  79         { "lsn", FLDT_UINT64X, OI(OFF(lsn)), C1, 0, TYP_NONE },
  80         { "crc", FLDT_CRC, OI(OFF(crc)), C1, 0, TYP_NONE },
  81         { NULL }
  82 };
  83
  84 static void
  85 agf_help(void)
  86 {
  87         dbprintf(_(
  88 "\n"
  89 " set allocation group free block list\n"
  90 "\n"
  91 " Example:\n"
  92 "\n"
  93 " agf 2 - move location to AGF in 2nd filesystem allocation group\n"
  94 "\n"
  95 " Located in the second sector of each allocation group, the AGF\n"
  96 " contains the root of two different freespace btrees:\n"
  97 " The 'cnt' btree keeps track freespace indexed on section size.\n"
  98 " The 'bno' btree tracks sections of freespace indexed on block number.\n"
  99 ));
 100 }
 101
 102 static int
 103 agf_f(
 104         int             argc,
 105         char            **argv)
 106 {
 107         xfs_agnumber_t  agno;
 108         char            *p;
 109
 110         if (argc > 1) {
 111                 agno = (xfs_agnumber_t)strtoul(argv[1], &p, 0);
 112                 if (*p != '\0' || agno >= mp->m_sb.sb_agcount) {
 113                         dbprintf(_("bad allocation group number %s\n"), argv[1]);
 114                         return 0;
 115                 }
 116                 cur_agno = agno;
 117         } else if (cur_agno == NULLAGNUMBER)
 118                 cur_agno = 0;
 119         ASSERT(typtab[TYP_AGF].typnm == TYP_AGF);
 120         set_cur(&typtab[TYP_AGF],
 121                 XFS_AG_DADDR(mp, cur_agno, XFS_AGF_DADDR(mp)),
 122                 XFS_FSS_TO_BB(mp, 1), DB_RING_ADD, NULL);
 123         return 0;
 124 }
 125
 126 void
 127 agf_init(void)
 128 {
 129         add_command(&agf_cmd);
 130 }
 131
 132 int
 133 agf_size(
 134         void    *obj,
 135         int     startoff,
 136         int     idx)
 137 {
 138         return bitize(mp->m_sb.sb_sectsize);
 139 }