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Consolidate btree block handling for xfs_db

Currently xfs_db has five different implementations for poking at btree
blocks, even duplicating code for btree blocks with entirely identical
layout (bmapbta vs bmapbtd and bno vs cnt).  Merge all these into
a single implementation that uses a table of btree characteristics keyed
of their magic number.

There's probably a way to further consolidate the magic arrays for the
different types, but I don't quite understand xfs_db's table driven
command parser for that.


Signed-off-by: Christoph Hellwig <hch@lst.de>
Merge of master-melb:xfs-cmds:32248a by kenmcd.

  Consolidate btree block handling for xfs_db

/*
 * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include <xfs/libxfs.h>
#include "type.h"
#include "faddr.h"
#include "fprint.h"
#include "field.h"
#include "inode.h"
#include "btblock.h"
#include "bmroot.h"
#include "bit.h"
#include "agf.h"
#include "agfl.h"
#include "agi.h"
#include "sb.h"
#include "dir.h"
#include "dirshort.h"
#include "attr.h"
#include "attrshort.h"
#include "dquot.h"
#include "dir2.h"
#include "dir2sf.h"

const ftattr_t	ftattrtab[] = {
	{ FLDT_AEXTNUM, "aextnum", fp_num, "%d", SI(bitsz(xfs_aextnum_t)),
	  FTARG_SIGNED, NULL, NULL },
	{ FLDT_AGBLOCK, "agblock", fp_num, "%u", SI(bitsz(xfs_agblock_t)),
	  FTARG_DONULL, fa_agblock, NULL },
	{ FLDT_AGBLOCKNZ, "agblocknz", fp_num, "%u", SI(bitsz(xfs_agblock_t)),
	  FTARG_SKIPZERO|FTARG_DONULL, fa_agblock, NULL },
	{ FLDT_AGF, "agf", NULL, (char *)agf_flds, agf_size, FTARG_SIZE, NULL,
	  agf_flds },
	{ FLDT_AGFL, "agfl", NULL, (char *)agfl_flds, agfl_size, FTARG_SIZE,
	  NULL, agfl_flds },
	{ FLDT_AGI, "agi", NULL, (char *)agi_flds, agi_size, FTARG_SIZE, NULL,
	  agi_flds },
	{ FLDT_AGINO, "agino", fp_num, "%u", SI(bitsz(xfs_agino_t)),
	  FTARG_DONULL, fa_agino, NULL },
	{ FLDT_AGINONN, "aginonn", fp_num, "%u", SI(bitsz(xfs_agino_t)),
	  FTARG_SKIPNULL, fa_agino, NULL },
	{ FLDT_AGNUMBER, "agnumber", fp_num, "%u", SI(bitsz(xfs_agnumber_t)),
	  FTARG_DONULL, NULL, NULL },
	{ FLDT_ATTR, "attr", NULL, (char *)attr_flds, attr_size, FTARG_SIZE,
	  NULL, attr_flds },
	{ FLDT_ATTR_BLKINFO, "attr_blkinfo", NULL, (char *)attr_blkinfo_flds,
	  SI(bitsz(struct xfs_da_blkinfo)), 0, NULL, attr_blkinfo_flds },
	{ FLDT_ATTR_LEAF_ENTRY, "attr_leaf_entry", fp_sarray,
	  (char *)attr_leaf_entry_flds, SI(bitsz(struct xfs_attr_leaf_entry)),
	  0, NULL, attr_leaf_entry_flds },
	{ FLDT_ATTR_LEAF_HDR, "attr_leaf_hdr", NULL, (char *)attr_leaf_hdr_flds,
	  SI(bitsz(struct xfs_attr_leaf_hdr)), 0, NULL, attr_leaf_hdr_flds },
	{ FLDT_ATTR_LEAF_MAP, "attr_leaf_map", fp_sarray,
	  (char *)attr_leaf_map_flds, SI(bitsz(struct xfs_attr_leaf_map)), 0,
	  NULL, attr_leaf_map_flds },
	{ FLDT_ATTR_LEAF_NAME, "attr_leaf_name", NULL,
	  (char *)attr_leaf_name_flds, attr_leaf_name_size, FTARG_SIZE, NULL,
	  attr_leaf_name_flds },
	{ FLDT_ATTR_NODE_ENTRY, "attr_node_entry", fp_sarray,
	  (char *)attr_node_entry_flds, SI(bitsz(struct xfs_da_node_entry)), 0,
	  NULL, attr_node_entry_flds },
	{ FLDT_ATTR_NODE_HDR, "attr_node_hdr", NULL, (char *)attr_node_hdr_flds,
	  SI(bitsz(struct xfs_da_node_hdr)), 0, NULL, attr_node_hdr_flds },
	{ FLDT_ATTR_SF_ENTRY, "attr_sf_entry", NULL, (char *)attr_sf_entry_flds,
	  attr_sf_entry_size, FTARG_SIZE, NULL, attr_sf_entry_flds },
	{ FLDT_ATTR_SF_HDR, "attr_sf_hdr", NULL, (char *)attr_sf_hdr_flds,
	  SI(bitsz(struct xfs_attr_sf_hdr)), 0, NULL, attr_sf_hdr_flds },
	{ FLDT_ATTRBLOCK, "attrblock", fp_num, "%u", SI(bitsz(__uint32_t)), 0,
	  fa_attrblock, NULL },
	{ FLDT_ATTRSHORT, "attrshort", NULL, (char *)attr_shortform_flds,
	  attrshort_size, FTARG_SIZE, NULL, attr_shortform_flds },
	{ FLDT_BMAPBTA, "bmapbta", NULL, (char *)bmapbta_flds, btblock_size,
	  FTARG_SIZE, NULL, bmapbta_flds },
	{ FLDT_BMAPBTAKEY, "bmapbtakey", fp_sarray, (char *)bmapbta_key_flds,
	  SI(bitsz(xfs_bmbt_key_t)), 0, NULL, bmapbta_key_flds },
	{ FLDT_BMAPBTAPTR, "bmapbtaptr", fp_num, "%llu",
	  SI(bitsz(xfs_bmbt_ptr_t)), 0, fa_dfsbno, NULL },
	{ FLDT_BMAPBTAREC, "bmapbtarec", fp_sarray, (char *)bmapbta_rec_flds,
	  SI(bitsz(xfs_bmbt_rec_t)), 0, NULL, bmapbta_rec_flds },
	{ FLDT_BMAPBTD, "bmapbtd", NULL, (char *)bmapbtd_flds, btblock_size,
	  FTARG_SIZE, NULL, bmapbtd_flds },
	{ FLDT_BMAPBTDKEY, "bmapbtdkey", fp_sarray, (char *)bmapbtd_key_flds,
	  SI(bitsz(xfs_bmbt_key_t)), 0, NULL, bmapbtd_key_flds },
	{ FLDT_BMAPBTDPTR, "bmapbtdptr", fp_num, "%llu",
	  SI(bitsz(xfs_bmbt_ptr_t)), 0, fa_dfsbno, NULL },
	{ FLDT_BMAPBTDREC, "bmapbtdrec", fp_sarray, (char *)bmapbtd_rec_flds,
	  SI(bitsz(xfs_bmbt_rec_t)), 0, NULL, bmapbtd_rec_flds },
	{ FLDT_BMROOTA, "bmroota", NULL, (char *)bmroota_flds, bmroota_size,
	  FTARG_SIZE, NULL, bmroota_flds },
	{ FLDT_BMROOTAKEY, "bmrootakey", fp_sarray, (char *)bmroota_key_flds,
	  SI(bitsz(xfs_bmdr_key_t)), 0, NULL, bmroota_key_flds },
	{ FLDT_BMROOTAPTR, "bmrootaptr", fp_num, "%llu",
	  SI(bitsz(xfs_bmdr_ptr_t)), 0, fa_dfsbno, NULL },
	{ FLDT_BMROOTD, "bmrootd", NULL, (char *)bmrootd_flds, bmrootd_size,
	  FTARG_SIZE, NULL, bmrootd_flds },
	{ FLDT_BMROOTDKEY, "bmrootdkey", fp_sarray, (char *)bmrootd_key_flds,
	  SI(bitsz(xfs_bmdr_key_t)), 0, NULL, bmrootd_key_flds },
	{ FLDT_BMROOTDPTR, "bmrootdptr", fp_num, "%llu",
	  SI(bitsz(xfs_bmdr_ptr_t)), 0, fa_dfsbno, NULL },
	{ FLDT_BNOBT, "bnobt", NULL, (char *)bnobt_flds, btblock_size, FTARG_SIZE,
	  NULL, bnobt_flds },
	{ FLDT_BNOBTKEY, "bnobtkey", fp_sarray, (char *)bnobt_key_flds,
	  SI(bitsz(xfs_alloc_key_t)), 0, NULL, bnobt_key_flds },
	{ FLDT_BNOBTPTR, "bnobtptr", fp_num, "%u", SI(bitsz(xfs_alloc_ptr_t)),
	  0, fa_agblock, NULL },
	{ FLDT_BNOBTREC, "bnobtrec", fp_sarray, (char *)bnobt_rec_flds,
	  SI(bitsz(xfs_alloc_rec_t)), 0, NULL, bnobt_rec_flds },
	{ FLDT_CEXTFLG, "cextflag", fp_num, "%u", SI(BMBT_EXNTFLAG_BITLEN), 0,
	  NULL, NULL },
	{ FLDT_CEXTLEN, "cextlen", fp_num, "%u", SI(BMBT_BLOCKCOUNT_BITLEN), 0,
	  NULL, NULL },
	{ FLDT_CFILEOFFA, "cfileoffa", fp_num, "%llu", SI(BMBT_STARTOFF_BITLEN),
	  0, fa_cfileoffa, NULL },
	{ FLDT_CFILEOFFD, "cfileoffd", fp_num, "%llu", SI(BMBT_STARTOFF_BITLEN),
	  0, fa_cfileoffd, NULL },
	{ FLDT_CFSBLOCK, "cfsblock", fp_num, "%llu", SI(BMBT_STARTBLOCK_BITLEN),
	  0, fa_cfsblock, NULL },
	{ FLDT_CHARNS, "charns", fp_charns, NULL, SI(bitsz(char)), 0, NULL,
	  NULL },
	{ FLDT_CHARS, "chars", fp_num, "%c", SI(bitsz(char)), 0, NULL, NULL },
	{ FLDT_CNTBT, "cntbt", NULL, (char *)cntbt_flds, btblock_size, FTARG_SIZE,
	  NULL, cntbt_flds },
	{ FLDT_CNTBTKEY, "cntbtkey", fp_sarray, (char *)cntbt_key_flds,
	  SI(bitsz(xfs_alloc_key_t)), 0, NULL, cntbt_key_flds },
	{ FLDT_CNTBTPTR, "cntbtptr", fp_num, "%u", SI(bitsz(xfs_alloc_ptr_t)),
	  0, fa_agblock, NULL },
	{ FLDT_CNTBTREC, "cntbtrec", fp_sarray, (char *)cntbt_rec_flds,
	  SI(bitsz(xfs_alloc_rec_t)), 0, NULL, cntbt_rec_flds },
	{ FLDT_DEV, "dev", fp_num, "%#x", SI(bitsz(xfs_dev_t)), 0, NULL, NULL },
	{ FLDT_DFILOFFA, "dfiloffa", fp_num, "%llu", SI(bitsz(xfs_dfiloff_t)),
	  0, fa_dfiloffa, NULL },
	{ FLDT_DFILOFFD, "dfiloffd", fp_num, "%llu", SI(bitsz(xfs_dfiloff_t)),
	  0, fa_dfiloffd, NULL },
	{ FLDT_DFSBNO, "dfsbno", fp_num, "%llu", SI(bitsz(xfs_dfsbno_t)),
	  FTARG_DONULL, fa_dfsbno, NULL },
	{ FLDT_DINODE_A, "dinode_a", NULL, (char *)inode_a_flds, inode_a_size,
	  FTARG_SIZE|FTARG_OKEMPTY, NULL, inode_a_flds },
	{ FLDT_DINODE_CORE, "dinode_core", NULL, (char *)inode_core_flds,
	  SI(bitsz(xfs_dinode_core_t)), 0, NULL, inode_core_flds },
	{ FLDT_DINODE_FMT, "dinode_fmt", fp_dinode_fmt, NULL,
	  SI(bitsz(__int8_t)), 0, NULL, NULL },
	{ FLDT_DINODE_U, "dinode_u", NULL, (char *)inode_u_flds, inode_u_size,
	  FTARG_SIZE|FTARG_OKEMPTY, NULL, inode_u_flds },
	{ FLDT_DIR, "dir", NULL, (char *)dir_flds, dir_size, FTARG_SIZE, NULL,
	  dir_flds },
	{ FLDT_DIR2, "dir2", NULL, (char *)dir2_flds, dir2_size, FTARG_SIZE,
	  NULL, dir2_flds },
	{ FLDT_DIR2_BLOCK_TAIL, "dir2_block_tail", NULL,
	  (char *)dir2_block_tail_flds, SI(bitsz(xfs_dir2_block_tail_t)), 0,
	  NULL, dir2_block_tail_flds },
	{ FLDT_DIR2_DATA_FREE, "dir2_data_free", NULL,
	  (char *)dir2_data_free_flds, SI(bitsz(xfs_dir2_data_free_t)), 0, NULL,
	  dir2_data_free_flds },
	{ FLDT_DIR2_DATA_HDR, "dir2_data_hdr", NULL, (char *)dir2_data_hdr_flds,
	  SI(bitsz(xfs_dir2_data_hdr_t)), 0, NULL, dir2_data_hdr_flds },
	{ FLDT_DIR2_DATA_OFF, "dir2_data_off", fp_num, "%#x",
	  SI(bitsz(xfs_dir2_data_off_t)), 0, NULL, NULL },
	{ FLDT_DIR2_DATA_OFFNZ, "dir2_data_offnz", fp_num, "%#x",
	  SI(bitsz(xfs_dir2_data_off_t)), FTARG_SKIPZERO, NULL, NULL },
	{ FLDT_DIR2_DATA_UNION, "dir2_data_union", NULL,
	  (char *)dir2_data_union_flds, dir2_data_union_size, FTARG_SIZE, NULL,
	  dir2_data_union_flds },
	{ FLDT_DIR2_FREE_HDR, "dir2_free_hdr", NULL, (char *)dir2_free_hdr_flds,
	  SI(bitsz(xfs_dir2_free_hdr_t)), 0, NULL, dir2_free_hdr_flds },
	{ FLDT_DIR2_INO4, "dir2_ino4", fp_num, "%u", SI(bitsz(xfs_dir2_ino4_t)),
	  0, fa_ino4, NULL },
	{ FLDT_DIR2_INO8, "dir2_ino8", fp_num, "%llu",
	  SI(bitsz(xfs_dir2_ino8_t)), 0, fa_ino8, NULL },
	{ FLDT_DIR2_INOU, "dir2_inou", NULL, (char *)dir2_inou_flds,
	  dir2_inou_size, FTARG_SIZE, NULL, dir2_inou_flds },
	{ FLDT_DIR2_LEAF_ENTRY, "dir2_leaf_entry", NULL,
	  (char *)dir2_leaf_entry_flds, SI(bitsz(xfs_dir2_leaf_entry_t)), 0,
	  NULL, dir2_leaf_entry_flds },
	{ FLDT_DIR2_LEAF_HDR, "dir2_leaf_hdr", NULL, (char *)dir2_leaf_hdr_flds,
	  SI(bitsz(xfs_dir2_leaf_hdr_t)), 0, NULL, dir2_leaf_hdr_flds },
	{ FLDT_DIR2_LEAF_TAIL, "dir2_leaf_tail", NULL,
	  (char *)dir2_leaf_tail_flds, SI(bitsz(xfs_dir2_leaf_tail_t)), 0, NULL,
	  dir2_leaf_tail_flds },
	{ FLDT_DIR2_SF_ENTRY, "dir2_sf_entry", NULL, (char *)dir2_sf_entry_flds,
	  dir2_sf_entry_size, FTARG_SIZE, NULL, dir2_sf_entry_flds },
	{ FLDT_DIR2_SF_HDR, "dir2_sf_hdr", NULL, (char *)dir2_sf_hdr_flds,
	  dir2_sf_hdr_size, FTARG_SIZE, NULL, dir2_sf_hdr_flds },
	{ FLDT_DIR2_SF_OFF, "dir2_sf_off", fp_num, "%#x",
	  SI(bitsz(xfs_dir2_sf_off_t)), 0, NULL, NULL },
	{ FLDT_DIR2SF, "dir2sf", NULL, (char *)dir2sf_flds, dir2sf_size,
	  FTARG_SIZE, NULL, dir2sf_flds },
	{ FLDT_DIR_BLKINFO, "dir_blkinfo", NULL, (char *)dir_blkinfo_flds,
	  SI(bitsz(struct xfs_da_blkinfo)), 0, NULL, dir_blkinfo_flds },
	{ FLDT_DIR_INO, "dir_ino", fp_num, "%llu", SI(bitsz(xfs_dir_ino_t)), 0,
	  fa_ino, NULL },
	{ FLDT_DIR_LEAF_ENTRY, "dir_leaf_entry", fp_sarray,
	  (char *)dir_leaf_entry_flds, SI(bitsz(struct xfs_dir_leaf_entry)), 0,
	  NULL, dir_leaf_entry_flds },
	{ FLDT_DIR_LEAF_HDR, "dir_leaf_hdr", NULL, (char *)dir_leaf_hdr_flds,
	  SI(bitsz(struct xfs_dir_leaf_hdr)), 0, NULL, dir_leaf_hdr_flds },
	{ FLDT_DIR_LEAF_MAP, "dir_leaf_map", fp_sarray,
	  (char *)dir_leaf_map_flds, SI(bitsz(struct xfs_dir_leaf_map)), 0,
	  NULL, dir_leaf_map_flds },
	{ FLDT_DIR_LEAF_NAME, "dir_leaf_name", NULL, (char *)dir_leaf_name_flds,
	  dir_leaf_name_size, FTARG_SIZE, NULL, dir_leaf_name_flds },
	{ FLDT_DIR_NODE_ENTRY, "dir_node_entry", fp_sarray,
	  (char *)dir_node_entry_flds, SI(bitsz(struct xfs_da_node_entry)), 0,
	  NULL, dir_node_entry_flds },
	{ FLDT_DIR_NODE_HDR, "dir_node_hdr", NULL, (char *)dir_node_hdr_flds,
	  SI(bitsz(struct xfs_da_node_hdr)), 0, NULL, dir_node_hdr_flds },
	{ FLDT_DIR_SF_ENTRY, "dir_sf_entry", NULL, (char *)dir_sf_entry_flds,
	  dir_sf_entry_size, FTARG_SIZE, NULL, dir_sf_entry_flds },
	{ FLDT_DIR_SF_HDR, "dir_sf_hdr", NULL, (char *)dir_sf_hdr_flds,
	  SI(bitsz(struct xfs_dir_sf_hdr)), 0, NULL, dir_sf_hdr_flds },
	{ FLDT_DIRBLOCK, "dirblock", fp_num, "%u", SI(bitsz(__uint32_t)), 0,
	  fa_dirblock, NULL },
	{ FLDT_DIRSHORT, "dirshort", NULL, (char *)dir_shortform_flds,
	  dirshort_size, FTARG_SIZE, NULL, dir_shortform_flds },
	{ FLDT_DISK_DQUOT, "disk_dquot", NULL, (char *)disk_dquot_flds,
	  SI(bitsz(xfs_disk_dquot_t)), 0, NULL, disk_dquot_flds },
	{ FLDT_DQBLK, "dqblk", NULL, (char *)dqblk_flds, SI(bitsz(xfs_dqblk_t)),
	  0, NULL, dqblk_flds },
	{ FLDT_DQID, "dqid", fp_num, "%d", SI(bitsz(xfs_dqid_t)), 0, NULL,
	  NULL },
	{ FLDT_DRFSBNO, "drfsbno", fp_num, "%llu", SI(bitsz(xfs_drfsbno_t)),
	  FTARG_DONULL, fa_drfsbno, NULL },
	{ FLDT_DRTBNO, "drtbno", fp_num, "%llu", SI(bitsz(xfs_drtbno_t)),
	  FTARG_DONULL, fa_drtbno, NULL },
	{ FLDT_EXTLEN, "extlen", fp_num, "%u", SI(bitsz(xfs_extlen_t)), 0, NULL,
	  NULL },
	{ FLDT_EXTNUM, "extnum", fp_num, "%d", SI(bitsz(xfs_extnum_t)),
	  FTARG_SIGNED, NULL, NULL },
	{ FLDT_FSIZE, "fsize", fp_num, "%lld", SI(bitsz(xfs_fsize_t)),
	  FTARG_SIGNED, NULL, NULL },
	{ FLDT_INO, "ino", fp_num, "%llu", SI(bitsz(xfs_ino_t)), FTARG_DONULL,
	  fa_ino, NULL },
	{ FLDT_INOBT, "inobt",  NULL, (char *)inobt_flds, btblock_size,
	  FTARG_SIZE, NULL, inobt_flds },
	{ FLDT_INOBTKEY, "inobtkey", fp_sarray, (char *)inobt_key_flds,
	  SI(bitsz(xfs_inobt_key_t)), 0, NULL, inobt_key_flds },
	{ FLDT_INOBTPTR, "inobtptr", fp_num, "%u", SI(bitsz(xfs_inobt_ptr_t)),
	  0, fa_agblock, NULL },
	{ FLDT_INOBTREC, "inobtrec", fp_sarray, (char *)inobt_rec_flds,
	  SI(bitsz(xfs_inobt_rec_t)), 0, NULL, inobt_rec_flds },
	{ FLDT_INODE, "inode", NULL, (char *)inode_flds, inode_size, FTARG_SIZE,
	  NULL, inode_flds },
	{ FLDT_INOFREE, "inofree", fp_num, "%#llx", SI(bitsz(xfs_inofree_t)), 0,
	  NULL, NULL },
	{ FLDT_INT16D, "int16d", fp_num, "%d", SI(bitsz(__int16_t)),
	  FTARG_SIGNED, NULL, NULL },
	{ FLDT_INT32D, "int32d", fp_num, "%d", SI(bitsz(__int32_t)),
	  FTARG_SIGNED, NULL, NULL },
	{ FLDT_INT64D, "int64d", fp_num, "%lld", SI(bitsz(__int64_t)),
	  FTARG_SIGNED, NULL, NULL },
	{ FLDT_INT8D, "int8d", fp_num, "%d", SI(bitsz(__int8_t)), FTARG_SIGNED,
	  NULL, NULL },
	{ FLDT_NSEC, "nsec", fp_num, "%09d", SI(bitsz(__int32_t)), FTARG_SIGNED,
	  NULL, NULL },
	{ FLDT_QCNT, "qcnt", fp_num, "%llu", SI(bitsz(xfs_qcnt_t)), 0, NULL,
	  NULL },
	{ FLDT_QWARNCNT, "qwarncnt", fp_num, "%u", SI(bitsz(xfs_qwarncnt_t)), 0,
	  NULL, NULL },
	{ FLDT_SB, "sb", NULL, (char *)sb_flds, sb_size, FTARG_SIZE, NULL,
	  sb_flds },
	{ FLDT_TIME, "time", fp_time, NULL, SI(bitsz(__int32_t)), FTARG_SIGNED,
	  NULL, NULL },
	{ FLDT_TIMESTAMP, "timestamp", NULL, (char *)timestamp_flds,
	  SI(bitsz(xfs_timestamp_t)), 0, NULL, timestamp_flds },
	{ FLDT_UINT1, "uint1", fp_num, "%u", SI(1), 0, NULL, NULL },
	{ FLDT_UINT16D, "uint16d", fp_num, "%u", SI(bitsz(__uint16_t)), 0, NULL,
	  NULL },
	{ FLDT_UINT16O, "uint16o", fp_num, "%#o", SI(bitsz(__uint16_t)), 0,
	  NULL, NULL },
	{ FLDT_UINT16X, "uint16x", fp_num, "%#x", SI(bitsz(__uint16_t)), 0,
	  NULL, NULL },
	{ FLDT_UINT32D, "uint32d", fp_num, "%u", SI(bitsz(__uint32_t)), 0, NULL,
	  NULL },
	{ FLDT_UINT32O, "uint32o", fp_num, "%#o", SI(bitsz(__uint32_t)), 0,
	  NULL, NULL },
	{ FLDT_UINT32X, "uint32x", fp_num, "%#x", SI(bitsz(__uint32_t)), 0,
	  NULL, NULL },
	{ FLDT_UINT64D, "uint64d", fp_num, "%llu", SI(bitsz(__uint64_t)), 0,
	  NULL, NULL },
	{ FLDT_UINT64O, "uint64o", fp_num, "%#llo", SI(bitsz(__uint64_t)), 0,
	  NULL, NULL },
	{ FLDT_UINT64X, "uint64x", fp_num, "%#llx", SI(bitsz(__uint64_t)), 0,
	  NULL, NULL },
	{ FLDT_UINT8D, "uint8d", fp_num, "%u", SI(bitsz(__uint8_t)), 0, NULL,
	  NULL },
	{ FLDT_UINT8O, "uint8o", fp_num, "%#o", SI(bitsz(__uint8_t)), 0, NULL,
	  NULL },
	{ FLDT_UINT8X, "uint8x", fp_num, "%#x", SI(bitsz(__uint8_t)), 0, NULL,
	  NULL },
	{ FLDT_UUID, "uuid", fp_uuid, NULL, SI(bitsz(uuid_t)), 0, NULL, NULL },
	{ FLDT_ZZZ, NULL }
};

int
bitoffset(
	const field_t	*f,
	void		*obj,
	int		startoff,
	int		idx)
{

	if (!(f->flags & FLD_OFFSET)) {
		if (f->flags & FLD_ARRAY) {
			int		abase;
#ifdef DEBUG
			const ftattr_t	*fa = &ftattrtab[f->ftyp];
#endif

			abase = (f->flags & FLD_ABASE1) != 0;
			ASSERT(fa->ftyp == f->ftyp);
			ASSERT((fa->arg & FTARG_SIZE) == 0);
			return (int)(__psint_t)f->offset +
				(idx - abase) * fsize(f, obj, startoff, idx);
		} else
			return (int)(__psint_t)f->offset;
	} else
		return (*f->offset)(obj, startoff, idx);
}

int
fcount(
	const field_t	*f,
	void		*obj,
	int		startoff)
{
	if (!(f->flags & FLD_COUNT))
		return (int)(__psint_t)f->count;
	else
		return (*f->count)(obj, startoff);
}

const field_t *
findfield(
	char		*name,
	const field_t	*fields,
	void            *obj,
	int             startoff)
{
	const field_t	*f;

	/* we only match if this field name matches and has a non-zero count */
	for (f = fields; f->name; f++)
		if (strcmp(f->name, name) == 0 && fcount(f, obj, startoff))
			return f;
	return NULL;
}

int
fsize(
	const field_t	*f,
	void		*obj,
	int		startoff,
	int		idx)
{
	const ftattr_t	*fa;

	fa = &ftattrtab[f->ftyp];
	ASSERT(fa->ftyp == f->ftyp);
	if (!(fa->arg & FTARG_SIZE))
		return (int)(__psint_t)fa->size;
	else
		return (*fa->size)(obj, startoff, idx);
}