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xfs: refactor quota limits initialization 

Replace all the if (!error) weirdness with helper functions that follow
our regular coding practices, and factor out the ternary expression soup.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Darrick J. Wong 2018-05-14 06:34:32 -07:00
parent 689e11c84b
commit eac69e1676
1 changed files with 78 additions and 64 deletions
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142
fs/xfs/xfs_qm.c
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@ -561,26 +561,88 @@ xfs_qm_set_defquota(
{
xfs_dquot_t *dqp;
struct xfs_def_quota *defq;
struct xfs_disk_dquot *ddqp;
int error;
error = xfs_qm_dqget_uncached(mp, 0, type, &dqp);
if (!error) {
xfs_disk_dquot_t *ddqp = &dqp->q_core;
if (error)
return;
defq = xfs_get_defquota(dqp, qinf);
ddqp = &dqp->q_core;
defq = xfs_get_defquota(dqp, qinf);
/*
* Timers and warnings have been already set, let's just set the
* default limits for this quota type
*/
defq->bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit);
defq->bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit);
defq->ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit);
defq->isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit);
defq->rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit);
defq->rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit);
xfs_qm_dqdestroy(dqp);
}
/*
* Timers and warnings have been already set, let's just set the
* default limits for this quota type
*/
defq->bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit);
defq->bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit);
defq->ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit);
defq->isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit);
defq->rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit);
defq->rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit);
xfs_qm_dqdestroy(dqp);
}
/* Initialize quota time limits from the root dquot. */
static void
xfs_qm_init_timelimits(
struct xfs_mount *mp,
struct xfs_quotainfo *qinf)
{
struct xfs_disk_dquot *ddqp;
struct xfs_dquot *dqp;
uint type;
int error;
qinf->qi_btimelimit = XFS_QM_BTIMELIMIT;
qinf->qi_itimelimit = XFS_QM_ITIMELIMIT;
qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT;
qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT;
qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT;
qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT;
/*
* We try to get the limits from the superuser's limits fields.
* This is quite hacky, but it is standard quota practice.
*
* Since we may not have done a quotacheck by this point, just read
* the dquot without attaching it to any hashtables or lists.
*
* Timers and warnings are globally set by the first timer found in
* user/group/proj quota types, otherwise a default value is used.
* This should be split into different fields per quota type.
*/
if (XFS_IS_UQUOTA_RUNNING(mp))
type = XFS_DQ_USER;
else if (XFS_IS_GQUOTA_RUNNING(mp))
type = XFS_DQ_GROUP;
else
type = XFS_DQ_PROJ;
error = xfs_qm_dqget_uncached(mp, 0, type, &dqp);
if (error)
return;
ddqp = &dqp->q_core;
/*
* The warnings and timers set the grace period given to
* a user or group before he or she can not perform any
* more writing. If it is zero, a default is used.
*/
if (ddqp->d_btimer)
qinf->qi_btimelimit = be32_to_cpu(ddqp->d_btimer);
if (ddqp->d_itimer)
qinf->qi_itimelimit = be32_to_cpu(ddqp->d_itimer);
if (ddqp->d_rtbtimer)
qinf->qi_rtbtimelimit = be32_to_cpu(ddqp->d_rtbtimer);
if (ddqp->d_bwarns)
qinf->qi_bwarnlimit = be16_to_cpu(ddqp->d_bwarns);
if (ddqp->d_iwarns)
qinf->qi_iwarnlimit = be16_to_cpu(ddqp->d_iwarns);
if (ddqp->d_rtbwarns)
qinf->qi_rtbwarnlimit = be16_to_cpu(ddqp->d_rtbwarns);
xfs_qm_dqdestroy(dqp);
}
/*
@ -592,8 +654,6 @@ xfs_qm_init_quotainfo(
struct xfs_mount *mp)
{
struct xfs_quotainfo *qinf;
struct xfs_dquot *dqp;
uint type;
int error;
ASSERT(XFS_IS_QUOTA_RUNNING(mp));
@ -626,53 +686,7 @@ xfs_qm_init_quotainfo(
mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD);
/*
* We try to get the limits from the superuser's limits fields.
* This is quite hacky, but it is standard quota practice.
*
* Since we may not have done a quotacheck by this point, just read
* the dquot without attaching it to any hashtables or lists.
*
* Timers and warnings are globally set by the first timer found in
* user/group/proj quota types, otherwise a default value is used.
* This should be split into different fields per quota type.
*/
if (XFS_IS_UQUOTA_RUNNING(mp))
type = XFS_DQ_USER;
else if (XFS_IS_GQUOTA_RUNNING(mp))
type = XFS_DQ_GROUP;
else
type = XFS_DQ_PROJ;
error = xfs_qm_dqget_uncached(mp, 0, type, &dqp);
if (!error) {
xfs_disk_dquot_t *ddqp = &dqp->q_core;
/*
* The warnings and timers set the grace period given to
* a user or group before he or she can not perform any
* more writing. If it is zero, a default is used.
*/
qinf->qi_btimelimit = ddqp->d_btimer ?
be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT;
qinf->qi_itimelimit = ddqp->d_itimer ?
be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT;
qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ?
be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT;
qinf->qi_bwarnlimit = ddqp->d_bwarns ?
be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT;
qinf->qi_iwarnlimit = ddqp->d_iwarns ?
be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT;
qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ?
be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT;
xfs_qm_dqdestroy(dqp);
} else {
qinf->qi_btimelimit = XFS_QM_BTIMELIMIT;
qinf->qi_itimelimit = XFS_QM_ITIMELIMIT;
qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT;
qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT;
qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT;
qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT;
}
xfs_qm_init_timelimits(mp, qinf);
if (XFS_IS_UQUOTA_RUNNING(mp))
xfs_qm_set_defquota(mp, XFS_DQ_USER, qinf);