int
xfs_agf_good_version(unsigned v)
{
return XFS_AGF_GOOD_VERSION(v);
}
static int
verify_set_agf(xfs_mount_t *mp, xfs_agf_t *agf, xfs_agnumber_t i)
{
xfs_drfsbno_t agblocks;
int retval = 0;
/* check common fields */
if (be32_to_cpu(agf->agf_magicnum) != XFS_AGF_MAGIC) {
retval = XR_AG_AGF;
do_warn(_("bad magic # 0x%x for agf %d\n"),
be32_to_cpu(agf->agf_magicnum), i);
if (!no_modify)
agf->agf_magicnum = cpu_to_be32(XFS_AGF_MAGIC);
}
if (!XFS_AGF_GOOD_VERSION(be32_to_cpu(agf->agf_versionnum))) {
retval = XR_AG_AGF;
do_warn(_("bad version # %d for agf %d\n"),
be32_to_cpu(agf->agf_versionnum), i);
if (!no_modify)
agf->agf_versionnum = cpu_to_be32(XFS_AGF_VERSION);
}
if (be32_to_cpu(agf->agf_seqno) != i) {
retval = XR_AG_AGF;
do_warn(_("bad sequence # %d for agf %d\n"),
be32_to_cpu(agf->agf_seqno), i);
if (!no_modify)
agf->agf_seqno = cpu_to_be32(i);
}
if (be32_to_cpu(agf->agf_length) != mp->m_sb.sb_agblocks) {
if (i != mp->m_sb.sb_agcount - 1) {
retval = XR_AG_AGF;
do_warn(_("bad length %d for agf %d, should be %d\n"),
be32_to_cpu(agf->agf_length), i,
mp->m_sb.sb_agblocks);
if (!no_modify)
agf->agf_length =
cpu_to_be32(mp->m_sb.sb_agblocks);
} else {
agblocks = mp->m_sb.sb_dblocks -
(xfs_drfsbno_t) mp->m_sb.sb_agblocks * i;
if (be32_to_cpu(agf->agf_length) != agblocks) {
retval = XR_AG_AGF;
do_warn(
_("bad length %d for agf %d, should be %" PRIu64 "\n"),
be32_to_cpu(agf->agf_length),
i, agblocks);
if (!no_modify)
agf->agf_length = cpu_to_be32(agblocks);
}
}
}
/*
* check first/last AGF fields. if need be, lose the free
* space in the AGFL, we'll reclaim it later.
*/
if (be32_to_cpu(agf->agf_flfirst) >= XFS_AGFL_SIZE(mp)) {
do_warn(_("flfirst %d in agf %d too large (max = %zu)\n"),
be32_to_cpu(agf->agf_flfirst),
i, XFS_AGFL_SIZE(mp));
if (!no_modify)
agf->agf_flfirst = cpu_to_be32(0);
}
if (be32_to_cpu(agf->agf_fllast) >= XFS_AGFL_SIZE(mp)) {
do_warn(_("fllast %d in agf %d too large (max = %zu)\n"),
be32_to_cpu(agf->agf_fllast),
i, XFS_AGFL_SIZE(mp));
if (!no_modify)
agf->agf_fllast = cpu_to_be32(0);
}
/* don't check freespace btrees -- will be checked by caller */
return(retval);
}
