/*
* Given dquot(s), make disk block and/or inode reservations against them.
* The fact that this does the reservation against user, group and
* project quotas is important, because this follows a all-or-nothing
* approach.
*
* flags = XFS_QMOPT_FORCE_RES evades limit enforcement. Used by chown.
* XFS_QMOPT_ENOSPC returns ENOSPC not EDQUOT. Used by pquota.
* XFS_TRANS_DQ_RES_BLKS reserves regular disk blocks
* XFS_TRANS_DQ_RES_RTBLKS reserves realtime disk blocks
* dquots are unlocked on return, if they were not locked by caller.
*/
int
xfs_trans_reserve_quota_bydquots(
struct xfs_trans *tp,
struct xfs_mount *mp,
struct xfs_dquot *udqp,
struct xfs_dquot *gdqp,
struct xfs_dquot *pdqp,
long nblks,
long ninos,
uint flags)
{
int error;
if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
return 0;
if (tp && tp->t_dqinfo == NULL)
xfs_trans_alloc_dqinfo(tp);
ASSERT(flags & XFS_QMOPT_RESBLK_MASK);
if (udqp) {
error = xfs_trans_dqresv(tp, mp, udqp, nblks, ninos,
(flags & ~XFS_QMOPT_ENOSPC));
if (error)
return error;
}
if (gdqp) {
error = xfs_trans_dqresv(tp, mp, gdqp, nblks, ninos, flags);
if (error)
goto unwind_usr;
}
if (pdqp) {
error = xfs_trans_dqresv(tp, mp, pdqp, nblks, ninos, flags);
if (error)
goto unwind_grp;
}
/*
* Didn't change anything critical, so, no need to log
*/
return 0;
unwind_grp:
flags |= XFS_QMOPT_FORCE_RES;
if (gdqp)
xfs_trans_dqresv(tp, mp, gdqp, -nblks, -ninos, flags);
unwind_usr:
flags |= XFS_QMOPT_FORCE_RES;
if (udqp)
xfs_trans_dqresv(tp, mp, udqp, -nblks, -ninos, flags);
return error;
}
/*
* Given dquot(s), make disk block and/or inode reservations against them.
* The fact that this does the reservation against both the usr and
* grp/prj quotas is important, because this follows a both-or-nothing
* approach.
*
* flags = XFS_QMOPT_FORCE_RES evades limit enforcement. Used by chown.
* XFS_QMOPT_ENOSPC returns ENOSPC not EDQUOT. Used by pquota.
* XFS_TRANS_DQ_RES_BLKS reserves regular disk blocks
* XFS_TRANS_DQ_RES_RTBLKS reserves realtime disk blocks
* dquots are unlocked on return, if they were not locked by caller.
*/
int
xfs_trans_reserve_quota_bydquots(
xfs_trans_t *tp,
xfs_mount_t *mp,
xfs_dquot_t *udqp,
xfs_dquot_t *gdqp,
long nblks,
long ninos,
uint flags)
{
int resvd = 0, error;
if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
return 0;
if (tp && tp->t_dqinfo == NULL)
xfs_trans_alloc_dqinfo(tp);
ASSERT(flags & XFS_QMOPT_RESBLK_MASK);
if (udqp) {
error = xfs_trans_dqresv(tp, mp, udqp, nblks, ninos,
(flags & ~XFS_QMOPT_ENOSPC));
if (error)
return error;
resvd = 1;
}
if (gdqp) {
error = xfs_trans_dqresv(tp, mp, gdqp, nblks, ninos, flags);
if (error) {
/*
* can't do it, so backout previous reservation
*/
if (resvd) {
flags |= XFS_QMOPT_FORCE_RES;
xfs_trans_dqresv(tp, mp, udqp,
-nblks, -ninos, flags);
}
return error;
}
}
/*
* Didn't change anything critical, so, no need to log
*/
return 0;
}
/*
* Given a dquot(s), make disk block and/or inode reservations against them.
* The fact that this does the reservation against both the usr and
* grp quotas is important, because this follows a both-or-nothing
* approach.
*
* flags = XFS_QMOPT_DQLOCK indicate if dquot(s) need to be locked.
* XFS_QMOPT_FORCE_RES evades limit enforcement. Used by chown.
* XFS_TRANS_DQ_RES_BLKS reserves regular disk blocks
* XFS_TRANS_DQ_RES_RTBLKS reserves realtime disk blocks
* dquots are unlocked on return, if they were not locked by caller.
*/
int
xfs_trans_reserve_quota_bydquots(
xfs_trans_t *tp,
xfs_mount_t *mp,
xfs_dquot_t *udqp,
xfs_dquot_t *gdqp,
long nblks,
long ninos,
uint flags)
{
int resvd;
if (! XFS_IS_QUOTA_ON(mp))
return (0);
if (tp && tp->t_dqinfo == NULL)
xfs_trans_alloc_dqinfo(tp);
ASSERT(flags & XFS_QMOPT_RESBLK_MASK);
resvd = 0;
if (udqp) {
if (xfs_trans_dqresv(tp, udqp, nblks, ninos, flags))
return (EDQUOT);
resvd = 1;
}
if (gdqp) {
if (xfs_trans_dqresv(tp, gdqp, nblks, ninos, flags)) {
/*
* can't do it, so backout previous reservation
*/
if (resvd) {
xfs_trans_dqresv(tp, udqp, -nblks, -ninos,
flags);
}
return (EDQUOT);
}
}
/*
* Didnt change anything critical, so, no need to log
*/
return (0);
}
