/*
* Translate an internal style on-disk-dquot to the exportable format.
* The main differences are that the counters/limits are all in Basic
* Blocks (BBs) instead of the internal FSBs, and all on-disk data has
* to be converted to the native endianness.
*/
STATIC void
xfs_qm_export_dquot(
xfs_mount_t *mp,
xfs_disk_dquot_t *src,
struct fs_disk_quota *dst)
{
memset(dst, 0, sizeof(*dst));
dst->d_version = FS_DQUOT_VERSION; /* different from src->d_version */
dst->d_flags =
xfs_qm_export_qtype_flags(INT_GET(src->d_flags, ARCH_CONVERT));
dst->d_id = INT_GET(src->d_id, ARCH_CONVERT);
dst->d_blk_hardlimit = (__uint64_t)
XFS_FSB_TO_BB(mp, INT_GET(src->d_blk_hardlimit, ARCH_CONVERT));
dst->d_blk_softlimit = (__uint64_t)
XFS_FSB_TO_BB(mp, INT_GET(src->d_blk_softlimit, ARCH_CONVERT));
dst->d_ino_hardlimit = (__uint64_t)
INT_GET(src->d_ino_hardlimit, ARCH_CONVERT);
dst->d_ino_softlimit = (__uint64_t)
INT_GET(src->d_ino_softlimit, ARCH_CONVERT);
dst->d_bcount = (__uint64_t)
XFS_FSB_TO_BB(mp, INT_GET(src->d_bcount, ARCH_CONVERT));
dst->d_icount = (__uint64_t) INT_GET(src->d_icount, ARCH_CONVERT);
dst->d_btimer = (__uint32_t) INT_GET(src->d_btimer, ARCH_CONVERT);
dst->d_itimer = (__uint32_t) INT_GET(src->d_itimer, ARCH_CONVERT);
dst->d_iwarns = INT_GET(src->d_iwarns, ARCH_CONVERT);
dst->d_bwarns = INT_GET(src->d_bwarns, ARCH_CONVERT);
dst->d_rtb_hardlimit = (__uint64_t)
XFS_FSB_TO_BB(mp, INT_GET(src->d_rtb_hardlimit, ARCH_CONVERT));
dst->d_rtb_softlimit = (__uint64_t)
XFS_FSB_TO_BB(mp, INT_GET(src->d_rtb_softlimit, ARCH_CONVERT));
dst->d_rtbcount = (__uint64_t)
XFS_FSB_TO_BB(mp, INT_GET(src->d_rtbcount, ARCH_CONVERT));
dst->d_rtbtimer = (__uint32_t) INT_GET(src->d_rtbtimer, ARCH_CONVERT);
dst->d_rtbwarns = INT_GET(src->d_rtbwarns, ARCH_CONVERT);
/*
* Internally, we don't reset all the timers when quota enforcement
* gets turned off. No need to confuse the userlevel code,
* so return zeroes in that case.
*/
if (! XFS_IS_QUOTA_ENFORCED(mp)) {
dst->d_btimer = 0;
dst->d_itimer = 0;
dst->d_rtbtimer = 0;
}
#ifdef DEBUG
if (XFS_IS_QUOTA_ENFORCED(mp) && dst->d_id != 0) {
if (((int) dst->d_bcount >= (int) dst->d_blk_softlimit) &&
(dst->d_blk_softlimit > 0)) {
ASSERT(dst->d_btimer != 0);
}
if (((int) dst->d_icount >= (int) dst->d_ino_softlimit) &&
(dst->d_ino_softlimit > 0)) {
ASSERT(dst->d_itimer != 0);
}
}
#endif
}
/*
* This reserves disk blocks and inodes against a dquot.
* Flags indicate if the dquot is to be locked here and also
* if the blk reservation is for RT or regular blocks.
* Sending in XFS_QMOPT_FORCE_RES flag skips the quota check.
* Returns EDQUOT if quota is exceeded.
*/
STATIC int
xfs_trans_dqresv(
xfs_trans_t *tp,
xfs_dquot_t *dqp,
long nblks,
long ninos,
uint flags)
{
int error;
xfs_qcnt_t hardlimit;
xfs_qcnt_t softlimit;
time_t btimer;
xfs_qcnt_t *resbcountp;
if (! (flags & XFS_QMOPT_DQLOCK)) {
xfs_dqlock(dqp);
}
ASSERT(XFS_DQ_IS_LOCKED(dqp));
if (flags & XFS_TRANS_DQ_RES_BLKS) {
hardlimit = INT_GET(dqp->q_core.d_blk_hardlimit, ARCH_CONVERT);
softlimit = INT_GET(dqp->q_core.d_blk_softlimit, ARCH_CONVERT);
btimer = INT_GET(dqp->q_core.d_btimer, ARCH_CONVERT);
resbcountp = &dqp->q_res_bcount;
} else {
ASSERT(flags & XFS_TRANS_DQ_RES_RTBLKS);
hardlimit = INT_GET(dqp->q_core.d_rtb_hardlimit, ARCH_CONVERT);
softlimit = INT_GET(dqp->q_core.d_rtb_softlimit, ARCH_CONVERT);
btimer = INT_GET(dqp->q_core.d_rtbtimer, ARCH_CONVERT);
resbcountp = &dqp->q_res_rtbcount;
}
error = 0;
if ((flags & XFS_QMOPT_FORCE_RES) == 0 &&
!INT_ISZERO(dqp->q_core.d_id, ARCH_CONVERT) &&
XFS_IS_QUOTA_ENFORCED(dqp->q_mount)) {
#ifdef QUOTADEBUG
printk("BLK Res: nblks=%ld + resbcount=%Ld > hardlimit=%Ld?\n",
nblks, *resbcountp, hardlimit);
#endif
if (nblks > 0) {
/*
* dquot is locked already. See if we'd go over the
* hardlimit or exceed the timelimit if we allocate
* nblks.
*/
if (hardlimit > 0ULL &&
(hardlimit <= nblks + *resbcountp)) {
error = EDQUOT;
goto error_return;
}
if (softlimit > 0ULL &&
(softlimit <= nblks + *resbcountp)) {
/*
* If timer or warnings has expired,
* return EDQUOT
*/
if ((btimer != 0 && CURRENT_TIME > btimer) ||
(!INT_ISZERO(dqp->q_core.d_bwarns, ARCH_CONVERT) &&
INT_GET(dqp->q_core.d_bwarns, ARCH_CONVERT) >=
XFS_QI_BWARNLIMIT(dqp->q_mount))) {
error = EDQUOT;
goto error_return;
}
}
}
if (ninos > 0) {
if (INT_GET(dqp->q_core.d_ino_hardlimit, ARCH_CONVERT) > 0ULL &&
INT_GET(dqp->q_core.d_icount, ARCH_CONVERT) >=
INT_GET(dqp->q_core.d_ino_hardlimit, ARCH_CONVERT)) {
error = EDQUOT;
goto error_return;
} else if (INT_GET(dqp->q_core.d_ino_softlimit, ARCH_CONVERT) > 0ULL &&
INT_GET(dqp->q_core.d_icount, ARCH_CONVERT) >=
INT_GET(dqp->q_core.d_ino_softlimit, ARCH_CONVERT)) {
/*
* If timer or warnings has expired,
* return EDQUOT
*/
if ((!INT_ISZERO(dqp->q_core.d_itimer, ARCH_CONVERT) &&
CURRENT_TIME > INT_GET(dqp->q_core.d_itimer, ARCH_CONVERT)) ||
(!INT_ISZERO(dqp->q_core.d_iwarns, ARCH_CONVERT) &&
INT_GET(dqp->q_core.d_iwarns, ARCH_CONVERT) >=
XFS_QI_IWARNLIMIT(dqp->q_mount))) {
error = EDQUOT;
goto error_return;
}
}
}
}
/*
* Change the reservation, but not the actual usage.
* Note that q_res_bcount = q_core.d_bcount + resv
*/
(*resbcountp) += (xfs_qcnt_t)nblks;
if (ninos != 0)
dqp->q_res_icount += (xfs_qcnt_t)ninos;
/*
* note the reservation amt in the trans struct too,
* so that the transaction knows how much was reserved by
* it against this particular dquot.
* We don't do this when we are reserving for a delayed allocation,
* because we don't have the luxury of a transaction envelope then.
*/
if (tp) {
ASSERT(tp->t_dqinfo);
ASSERT(flags & XFS_QMOPT_RESBLK_MASK);
if (nblks != 0)
xfs_trans_mod_dquot(tp, dqp,
flags & XFS_QMOPT_RESBLK_MASK,
nblks);
if (ninos != 0)
xfs_trans_mod_dquot(tp, dqp,
XFS_TRANS_DQ_RES_INOS,
ninos);
}
ASSERT(dqp->q_res_bcount >= INT_GET(dqp->q_core.d_bcount, ARCH_CONVERT));
ASSERT(dqp->q_res_rtbcount >= INT_GET(dqp->q_core.d_rtbcount, ARCH_CONVERT));
ASSERT(dqp->q_res_icount >= INT_GET(dqp->q_core.d_icount, ARCH_CONVERT));
error_return:
if (! (flags & XFS_QMOPT_DQLOCK)) {
xfs_dqunlock(dqp);
}
return (error);
}
/*
* This reserves disk blocks and inodes against a dquot.
* Flags indicate if the dquot is to be locked here and also
* if the blk reservation is for RT or regular blocks.
* Sending in XFS_QMOPT_FORCE_RES flag skips the quota check.
* Returns EDQUOT if quota is exceeded.
*/
STATIC int
xfs_trans_dqresv(
xfs_trans_t *tp,
xfs_mount_t *mp,
xfs_dquot_t *dqp,
long nblks,
long ninos,
uint flags)
{
int error;
xfs_qcnt_t hardlimit;
xfs_qcnt_t softlimit;
time_t timer;
xfs_qwarncnt_t warns;
xfs_qwarncnt_t warnlimit;
xfs_qcnt_t count;
xfs_qcnt_t *resbcountp;
xfs_quotainfo_t *q = mp->m_quotainfo;
if (! (flags & XFS_QMOPT_DQLOCK)) {
xfs_dqlock(dqp);
}
ASSERT(XFS_DQ_IS_LOCKED(dqp));
if (flags & XFS_TRANS_DQ_RES_BLKS) {
hardlimit = be64_to_cpu(dqp->q_core.d_blk_hardlimit);
if (!hardlimit)
hardlimit = q->qi_bhardlimit;
softlimit = be64_to_cpu(dqp->q_core.d_blk_softlimit);
if (!softlimit)
softlimit = q->qi_bsoftlimit;
timer = be32_to_cpu(dqp->q_core.d_btimer);
warns = be16_to_cpu(dqp->q_core.d_bwarns);
warnlimit = XFS_QI_BWARNLIMIT(dqp->q_mount);
resbcountp = &dqp->q_res_bcount;
} else {
ASSERT(flags & XFS_TRANS_DQ_RES_RTBLKS);
hardlimit = be64_to_cpu(dqp->q_core.d_rtb_hardlimit);
if (!hardlimit)
hardlimit = q->qi_rtbhardlimit;
softlimit = be64_to_cpu(dqp->q_core.d_rtb_softlimit);
if (!softlimit)
softlimit = q->qi_rtbsoftlimit;
timer = be32_to_cpu(dqp->q_core.d_rtbtimer);
warns = be16_to_cpu(dqp->q_core.d_rtbwarns);
warnlimit = XFS_QI_RTBWARNLIMIT(dqp->q_mount);
resbcountp = &dqp->q_res_rtbcount;
}
error = 0;
if ((flags & XFS_QMOPT_FORCE_RES) == 0 &&
dqp->q_core.d_id &&
XFS_IS_QUOTA_ENFORCED(dqp->q_mount)) {
#ifdef QUOTADEBUG
cmn_err(CE_DEBUG, "BLK Res: nblks=%ld + resbcount=%Ld"
" > hardlimit=%Ld?", nblks, *resbcountp, hardlimit);
#endif
if (nblks > 0) {
/*
* dquot is locked already. See if we'd go over the
* hardlimit or exceed the timelimit if we allocate
* nblks.
*/
if (hardlimit > 0ULL &&
(hardlimit <= nblks + *resbcountp)) {
error = EDQUOT;
goto error_return;
}
if (softlimit > 0ULL &&
(softlimit <= nblks + *resbcountp)) {
/*
* If timer or warnings has expired,
* return EDQUOT
*/
if ((timer != 0 && get_seconds() > timer) ||
(warns != 0 && warns >= warnlimit)) {
error = EDQUOT;
goto error_return;
}
}
}
if (ninos > 0) {
count = be64_to_cpu(dqp->q_core.d_icount);
timer = be32_to_cpu(dqp->q_core.d_itimer);
warns = be16_to_cpu(dqp->q_core.d_iwarns);
warnlimit = XFS_QI_IWARNLIMIT(dqp->q_mount);
hardlimit = be64_to_cpu(dqp->q_core.d_ino_hardlimit);
if (!hardlimit)
hardlimit = q->qi_ihardlimit;
softlimit = be64_to_cpu(dqp->q_core.d_ino_softlimit);
if (!softlimit)
softlimit = q->qi_isoftlimit;
if (hardlimit > 0ULL && count >= hardlimit) {
error = EDQUOT;
goto error_return;
} else if (softlimit > 0ULL && count >= softlimit) {
/*
* If timer or warnings has expired,
* return EDQUOT
*/
if ((timer != 0 && get_seconds() > timer) ||
(warns != 0 && warns >= warnlimit)) {
error = EDQUOT;
goto error_return;
}
}
}
}
/*
* Change the reservation, but not the actual usage.
* Note that q_res_bcount = q_core.d_bcount + resv
*/
(*resbcountp) += (xfs_qcnt_t)nblks;
if (ninos != 0)
dqp->q_res_icount += (xfs_qcnt_t)ninos;
/*
* note the reservation amt in the trans struct too,
* so that the transaction knows how much was reserved by
* it against this particular dquot.
* We don't do this when we are reserving for a delayed allocation,
* because we don't have the luxury of a transaction envelope then.
*/
if (tp) {
ASSERT(tp->t_dqinfo);
ASSERT(flags & XFS_QMOPT_RESBLK_MASK);
if (nblks != 0)
xfs_trans_mod_dquot(tp, dqp,
flags & XFS_QMOPT_RESBLK_MASK,
nblks);
if (ninos != 0)
xfs_trans_mod_dquot(tp, dqp,
XFS_TRANS_DQ_RES_INOS,
ninos);
}
ASSERT(dqp->q_res_bcount >= be64_to_cpu(dqp->q_core.d_bcount));
ASSERT(dqp->q_res_rtbcount >= be64_to_cpu(dqp->q_core.d_rtbcount));
ASSERT(dqp->q_res_icount >= be64_to_cpu(dqp->q_core.d_icount));
error_return:
if (! (flags & XFS_QMOPT_DQLOCK)) {
xfs_dqunlock(dqp);
}
return (error);
}
