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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2000-2005 Silicon Graphics, Inc.
* All Rights Reserved.
*/
#ifndef __XFS_QM_H__
#define __XFS_QM_H__
#include "xfs_dquot_item.h"
#include "xfs_dquot.h"
struct xfs_inode;
extern struct kmem_zone *xfs_qm_dqtrxzone;
/*
* Number of bmaps that we ask from bmapi when doing a quotacheck.
* We make this restriction to keep the memory usage to a minimum.
*/
#define XFS_DQITER_MAP_SIZE 10
#define XFS_IS_DQUOT_UNINITIALIZED(dqp) ( \
!dqp->q_core.d_blk_hardlimit && \
!dqp->q_core.d_blk_softlimit && \
!dqp->q_core.d_rtb_hardlimit && \
!dqp->q_core.d_rtb_softlimit && \
!dqp->q_core.d_ino_hardlimit && \
!dqp->q_core.d_ino_softlimit && \
!dqp->q_core.d_bcount && \
!dqp->q_core.d_rtbcount && \
!dqp->q_core.d_icount)
/*
* This defines the unit of allocation of dquots.
* Currently, it is just one file system block, and a 4K blk contains 30
* (136 * 30 = 4080) dquots. It's probably not worth trying to make
* this more dynamic.
* XXXsup However, if this number is changed, we have to make sure that we don't
* implicitly assume that we do allocations in chunks of a single filesystem
* block in the dquot/xqm code.
*/
#define XFS_DQUOT_CLUSTER_SIZE_FSB (xfs_filblks_t)1
/* Defaults for each quota type: time limits, warn limits, usage limits */
struct xfs_def_quota {
time64_t btimelimit; /* limit for blks timer */
time64_t itimelimit; /* limit for inodes timer */
time64_t rtbtimelimit; /* limit for rt blks timer */
xfs_qwarncnt_t bwarnlimit; /* limit for blks warnings */
xfs_qwarncnt_t iwarnlimit; /* limit for inodes warnings */
xfs_qwarncnt_t rtbwarnlimit; /* limit for rt blks warnings */
xfs_qcnt_t bhardlimit; /* default data blk hard limit */
xfs_qcnt_t bsoftlimit; /* default data blk soft limit */
xfs_qcnt_t ihardlimit; /* default inode count hard limit */
xfs_qcnt_t isoftlimit; /* default inode count soft limit */
xfs_qcnt_t rtbhardlimit; /* default realtime blk hard limit */
xfs_qcnt_t rtbsoftlimit; /* default realtime blk soft limit */
};
/*
* Various quota information for individual filesystems.
* The mount structure keeps a pointer to this.
*/
struct xfs_quotainfo {
struct radix_tree_root qi_uquota_tree;
struct radix_tree_root qi_gquota_tree;
struct radix_tree_root qi_pquota_tree;
struct mutex qi_tree_lock;
struct xfs_inode *qi_uquotaip; /* user quota inode */
struct xfs_inode *qi_gquotaip; /* group quota inode */
struct xfs_inode *qi_pquotaip; /* project quota inode */
struct list_lru qi_lru;
int qi_dquots;
struct mutex qi_quotaofflock;/* to serialize quotaoff */
xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */
uint qi_dqperchunk; /* # ondisk dq in above chunk */
struct xfs_def_quota qi_usr_default;
struct xfs_def_quota qi_grp_default;
struct xfs_def_quota qi_prj_default;
struct shrinker qi_shrinker;
};
static inline struct radix_tree_root *
xfs_dquot_tree(
struct xfs_quotainfo *qi,
int type)
{
switch (type) {
case XFS_DQ_USER:
return &qi->qi_uquota_tree;
case XFS_DQ_GROUP:
return &qi->qi_gquota_tree;
case XFS_DQ_PROJ:
return &qi->qi_pquota_tree;
default:
ASSERT(0);
}
return NULL;
}
static inline struct xfs_inode *
xfs_quota_inode(xfs_mount_t *mp, uint dq_flags)
{
switch (dq_flags & XFS_DQ_ALLTYPES) {
case XFS_DQ_USER:
return mp->m_quotainfo->qi_uquotaip;
case XFS_DQ_GROUP:
return mp->m_quotainfo->qi_gquotaip;
case XFS_DQ_PROJ:
return mp->m_quotainfo->qi_pquotaip;
default:
ASSERT(0);
}
return NULL;
}
static inline int
xfs_dquot_type(struct xfs_dquot *dqp)
{
if (XFS_QM_ISUDQ(dqp))
return XFS_DQ_USER;
if (XFS_QM_ISGDQ(dqp))
return XFS_DQ_GROUP;
ASSERT(XFS_QM_ISPDQ(dqp));
return XFS_DQ_PROJ;
}
extern void xfs_trans_mod_dquot(struct xfs_trans *tp, struct xfs_dquot *dqp,
uint field, int64_t delta);
extern void xfs_trans_dqjoin(struct xfs_trans *, struct xfs_dquot *);
extern void xfs_trans_log_dquot(struct xfs_trans *, struct xfs_dquot *);
/*
* We keep the usr, grp, and prj dquots separately so that locking will be
* easier to do at commit time. All transactions that we know of at this point
* affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value.
*/
enum {
XFS_QM_TRANS_USR = 0,
XFS_QM_TRANS_GRP,
XFS_QM_TRANS_PRJ,
XFS_QM_TRANS_DQTYPES
};
#define XFS_QM_TRANS_MAXDQS 2
struct xfs_dquot_acct {
struct xfs_dqtrx dqs[XFS_QM_TRANS_DQTYPES][XFS_QM_TRANS_MAXDQS];
};
/*
* Users are allowed to have a usage exceeding their softlimit for
* a period this long.
*/
#define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */
#define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */
#define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */
#define XFS_QM_BWARNLIMIT 5
#define XFS_QM_IWARNLIMIT 5
#define XFS_QM_RTBWARNLIMIT 5
extern void xfs_qm_destroy_quotainfo(struct xfs_mount *);
/* dquot stuff */
extern void xfs_qm_dqpurge_all(struct xfs_mount *, uint);
extern void xfs_qm_dqrele_all_inodes(struct xfs_mount *, uint);
/* quota ops */
extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint);
extern int xfs_qm_scall_getquota(struct xfs_mount *, xfs_dqid_t,
uint, struct qc_dqblk *);
extern int xfs_qm_scall_getquota_next(struct xfs_mount *,
xfs_dqid_t *, uint, struct qc_dqblk *);
extern int xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint,
struct qc_dqblk *);
extern int xfs_qm_scall_quotaon(struct xfs_mount *, uint);
extern int xfs_qm_scall_quotaoff(struct xfs_mount *, uint);
static inline struct xfs_def_quota *
xfs_get_defquota(struct xfs_quotainfo *qi, int type)
{
switch (type) {
case XFS_DQ_USER:
return &qi->qi_usr_default;
case XFS_DQ_GROUP:
return &qi->qi_grp_default;
case XFS_DQ_PROJ:
return &qi->qi_prj_default;
default:
ASSERT(0);
return NULL;
}
}
#endif /* __XFS_QM_H__ */
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