xfs: implement quota warnings via netlink
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>
diff --git a/fs/xfs/quota/xfs_trans_dquot.c b/fs/xfs/quota/xfs_trans_dquot.c
index b9db6f7..c3ab75c 100644
--- a/fs/xfs/quota/xfs_trans_dquot.c
+++ b/fs/xfs/quota/xfs_trans_dquot.c
@@ -589,6 +589,20 @@
}
}
+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 @@
* 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 @@
if (!softlimit)
softlimit = q->qi_isoftlimit;
- if (hardlimit > 0ULL && count >= hardlimit)
+ if (hardlimit > 0ULL && count >= hardlimit) {
+ xfs_quota_warn(mp, dqp, QUOTA_NL_IHARDWARN);
goto error_return;
- if (softlimit > 0ULL && count >= softlimit &&
- ((timer != 0 && get_seconds() > timer) ||
- (warns != 0 && warns >= warnlimit)))
- 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);
+ }
}
}