int
xfs_agi_good_version(unsigned v)
{
return XFS_AGI_GOOD_VERSION(v);
}
static int
verify_set_agi(xfs_mount_t *mp, xfs_agi_t *agi, xfs_agnumber_t agno)
{
xfs_drfsbno_t agblocks;
int retval = 0;
/* check common fields */
if (be32_to_cpu(agi->agi_magicnum) != XFS_AGI_MAGIC) {
retval = XR_AG_AGI;
do_warn(_("bad magic # 0x%x for agi %d\n"),
be32_to_cpu(agi->agi_magicnum), agno);
if (!no_modify)
agi->agi_magicnum = cpu_to_be32(XFS_AGI_MAGIC);
}
if (!XFS_AGI_GOOD_VERSION(be32_to_cpu(agi->agi_versionnum))) {
retval = XR_AG_AGI;
do_warn(_("bad version # %d for agi %d\n"),
be32_to_cpu(agi->agi_versionnum), agno);
if (!no_modify)
agi->agi_versionnum = cpu_to_be32(XFS_AGI_VERSION);
}
if (be32_to_cpu(agi->agi_seqno) != agno) {
retval = XR_AG_AGI;
do_warn(_("bad sequence # %d for agi %d\n"),
be32_to_cpu(agi->agi_seqno), agno);
if (!no_modify)
agi->agi_seqno = cpu_to_be32(agno);
}
if (be32_to_cpu(agi->agi_length) != mp->m_sb.sb_agblocks) {
if (agno != mp->m_sb.sb_agcount - 1) {
retval = XR_AG_AGI;
do_warn(_("bad length # %d for agi %d, should be %d\n"),
be32_to_cpu(agi->agi_length), agno,
mp->m_sb.sb_agblocks);
if (!no_modify)
agi->agi_length =
cpu_to_be32(mp->m_sb.sb_agblocks);
} else {
agblocks = mp->m_sb.sb_dblocks -
(xfs_drfsbno_t) mp->m_sb.sb_agblocks * agno;
if (be32_to_cpu(agi->agi_length) != agblocks) {
retval = XR_AG_AGI;
do_warn(
_("bad length # %d for agi %d, should be %" PRIu64 "\n"),
be32_to_cpu(agi->agi_length),
agno, agblocks);
if (!no_modify)
agi->agi_length = cpu_to_be32(agblocks);
}
}
}
/* don't check inode btree -- will be checked by caller */
return(retval);
}
