static void
process_agi_unlinked(
struct xfs_mount *mp,
xfs_agnumber_t agno)
{
struct xfs_buf *bp;
struct xfs_agi *agip;
xfs_agnumber_t i;
int agi_dirty = 0;
bp = libxfs_readbuf(mp->m_dev,
XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)),
mp->m_sb.sb_sectsize/BBSIZE, 0, &xfs_agi_buf_ops);
if (!bp)
do_error(_("cannot read agi block %" PRId64 " for ag %u\n"),
XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)), agno);
agip = XFS_BUF_TO_AGI(bp);
ASSERT(be32_to_cpu(agip->agi_seqno) == agno);
for (i = 0; i < XFS_AGI_UNLINKED_BUCKETS; i++) {
if (agip->agi_unlinked[i] != cpu_to_be32(NULLAGINO)) {
agip->agi_unlinked[i] = cpu_to_be32(NULLAGINO);
agi_dirty = 1;
}
}
if (agi_dirty)
libxfs_writebuf(bp, 0);
else
libxfs_putbuf(bp);
}
static void
scan_ag(
xfs_agnumber_t agno)
{
xfs_agf_t *agf;
xfs_agi_t *agi;
push_cur();
set_cur(&typtab[TYP_AGF],
XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)),
XFS_FSS_TO_BB(mp, 1), DB_RING_IGN, NULL);
if ((agf = iocur_top->data) == NULL) {
dbprintf(_("can't read agf block for ag %u\n"), agno);
pop_cur();
return;
}
push_cur();
set_cur(&typtab[TYP_AGI],
XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)),
XFS_FSS_TO_BB(mp, 1), DB_RING_IGN, NULL);
if ((agi = iocur_top->data) == NULL) {
dbprintf(_("can't read agi block for ag %u\n"), agno);
pop_cur();
pop_cur();
return;
}
scan_sbtree(agf, be32_to_cpu(agi->agi_root),
be32_to_cpu(agi->agi_level), scanfunc_ino, TYP_INOBT);
pop_cur();
pop_cur();
}
/*
* XXX: yet more code that can be shared with mkfs, growfs.
*/
static void
build_agi(xfs_mount_t *mp, xfs_agnumber_t agno, bt_status_t *btree_curs,
bt_status_t *finobt_curs, struct agi_stat *agi_stat)
{
xfs_buf_t *agi_buf;
xfs_agi_t *agi;
int i;
agi_buf = libxfs_getbuf(mp->m_dev,
XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)),
mp->m_sb.sb_sectsize/BBSIZE);
agi_buf->b_ops = &xfs_agi_buf_ops;
agi = XFS_BUF_TO_AGI(agi_buf);
memset(agi, 0, mp->m_sb.sb_sectsize);
agi->agi_magicnum = cpu_to_be32(XFS_AGI_MAGIC);
agi->agi_versionnum = cpu_to_be32(XFS_AGI_VERSION);
agi->agi_seqno = cpu_to_be32(agno);
if (agno < mp->m_sb.sb_agcount - 1)
agi->agi_length = cpu_to_be32(mp->m_sb.sb_agblocks);
else
agi->agi_length = cpu_to_be32(mp->m_sb.sb_dblocks -
(xfs_rfsblock_t) mp->m_sb.sb_agblocks * agno);
agi->agi_count = cpu_to_be32(agi_stat->count);
agi->agi_root = cpu_to_be32(btree_curs->root);
agi->agi_level = cpu_to_be32(btree_curs->num_levels);
agi->agi_freecount = cpu_to_be32(agi_stat->freecount);
agi->agi_newino = cpu_to_be32(agi_stat->first_agino);
agi->agi_dirino = cpu_to_be32(NULLAGINO);
for (i = 0; i < XFS_AGI_UNLINKED_BUCKETS; i++)
agi->agi_unlinked[i] = cpu_to_be32(NULLAGINO);
if (xfs_sb_version_hascrc(&mp->m_sb))
platform_uuid_copy(&agi->agi_uuid, &mp->m_sb.sb_meta_uuid);
if (xfs_sb_version_hasfinobt(&mp->m_sb)) {
agi->agi_free_root = cpu_to_be32(finobt_curs->root);
agi->agi_free_level = cpu_to_be32(finobt_curs->num_levels);
}
libxfs_writebuf(agi_buf, 0);
}
static int
agi_f(
int argc,
char **argv)
{
xfs_agnumber_t agno;
char *p;
if (argc > 1) {
agno = (xfs_agnumber_t)strtoul(argv[1], &p, 0);
if (*p != '\0' || agno >= mp->m_sb.sb_agcount) {
dbprintf(_("bad allocation group number %s\n"), argv[1]);
return 0;
}
cur_agno = agno;
} else if (cur_agno == NULLAGNUMBER)
cur_agno = 0;
ASSERT(typtab[TYP_AGI].typnm == TYP_AGI);
set_cur(&typtab[TYP_AGI],
XFS_AG_DADDR(mp, cur_agno, XFS_AGI_DADDR(mp)),
XFS_FSS_TO_BB(mp, 1), DB_RING_ADD, NULL);
return 0;
}
