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xfs: implement quota warnings via netlink

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Wire up quota_send_warning to send quota warnings over netlink.
This is used by various desktops to show user quota warnings.

Tested by running the quota_nld daemon while running the xfstest
quota tests and observing the warnings.  I'll see how I can get a
more formal testcase for it written.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Alex Elder <aelder@sgi.com>
This commit is contained in:
Christoph Hellwig 2010-01-17 22:36:19 +00:00 committed by Alex Elder
parent 4d1f88d75b
commit a210c1aa7f
1 changed files with 39 additions and 10 deletions
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49
fs/xfs/quota/xfs_trans_dquot.c
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@ -589,6 +589,20 @@ xfs_trans_unreserve_and_mod_dquots(
}
}
STATIC void
xfs_quota_warn(
struct xfs_mount *mp,
struct xfs_dquot *dqp,
int type)
{
/* no warnings for project quotas - we just return ENOSPC later */
if (dqp->dq_flags & XFS_DQ_PROJ)
return;
quota_send_warning((dqp->dq_flags & XFS_DQ_USER) ? USRQUOTA : GRPQUOTA,
be32_to_cpu(dqp->q_core.d_id), mp->m_super->s_dev,
type);
}
/*
* This reserves disk blocks and inodes against a dquot.
* Flags indicate if the dquot is to be locked here and also
@ -657,13 +671,21 @@ xfs_trans_dqresv(
* nblks.
*/
if (hardlimit > 0ULL &&
hardlimit <= nblks + *resbcountp)
hardlimit <= nblks + *resbcountp) {
xfs_quota_warn(mp, dqp, QUOTA_NL_BHARDWARN);
goto error_return;
}
if (softlimit > 0ULL &&
softlimit <= nblks + *resbcountp &&
((timer != 0 && get_seconds() > timer) ||
(warns != 0 && warns >= warnlimit)))
goto error_return;
softlimit <= nblks + *resbcountp) {
if ((timer != 0 && get_seconds() > timer) ||
(warns != 0 && warns >= warnlimit)) {
xfs_quota_warn(mp, dqp,
QUOTA_NL_BSOFTLONGWARN);
goto error_return;
}
xfs_quota_warn(mp, dqp, QUOTA_NL_BSOFTWARN);
}
}
if (ninos > 0) {
count = be64_to_cpu(dqp->q_core.d_icount);
@ -677,12 +699,19 @@ xfs_trans_dqresv(
if (!softlimit)
softlimit = q->qi_isoftlimit;
if (hardlimit > 0ULL && count >= hardlimit)
goto error_return;
if (softlimit > 0ULL && count >= softlimit &&
((timer != 0 && get_seconds() > timer) ||
(warns != 0 && warns >= warnlimit)))
if (hardlimit > 0ULL && count >= hardlimit) {
xfs_quota_warn(mp, dqp, QUOTA_NL_IHARDWARN);
goto error_return;
}
if (softlimit > 0ULL && count >= softlimit) {
if ((timer != 0 && get_seconds() > timer) ||
(warns != 0 && warns >= warnlimit)) {
xfs_quota_warn(mp, dqp,
QUOTA_NL_ISOFTLONGWARN);
goto error_return;
}
xfs_quota_warn(mp, dqp, QUOTA_NL_ISOFTWARN);
}
}
}