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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_cache *xfs_dqtrx_cache;
/*
* 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_blk.hardlimit && \
!dqp->q_blk.softlimit && \
!dqp->q_rtb.hardlimit && \
!dqp->q_rtb.softlimit && \
!dqp->q_ino.hardlimit && \
!dqp->q_ino.softlimit && \
!dqp->q_blk.count && \
!dqp->q_rtb.count && \
!dqp->q_ino.count)
struct xfs_quota_limits {
xfs_qcnt_t hard; /* default hard limit */
xfs_qcnt_t soft; /* default soft limit */
time64_t time; /* limit for timers */
};
/* Defaults for each quota type: time limits, warn limits, usage limits */
struct xfs_def_quota {
struct xfs_quota_limits blk;
struct xfs_quota_limits ino;
struct xfs_quota_limits rtb;
};
/*
* 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;
/* Minimum and maximum quota expiration timestamp values. */
time64_t qi_expiry_min;
time64_t qi_expiry_max;
};
static inline struct radix_tree_root *
xfs_dquot_tree(
struct xfs_quotainfo *qi,
xfs_dqtype_t type)
{
switch (type) {
case XFS_DQTYPE_USER:
return &qi->qi_uquota_tree;
case XFS_DQTYPE_GROUP:
return &qi->qi_gquota_tree;
case XFS_DQTYPE_PROJ:
return &qi->qi_pquota_tree;
default:
ASSERT(0);
}
return NULL;
}
static inline struct xfs_inode *
xfs_quota_inode(struct xfs_mount *mp, xfs_dqtype_t type)
{
switch (type) {
case XFS_DQTYPE_USER:
return mp->m_quotainfo->qi_uquotaip;
case XFS_DQTYPE_GROUP:
return mp->m_quotainfo->qi_gquotaip;
case XFS_DQTYPE_PROJ:
return mp->m_quotainfo->qi_pquotaip;
default:
ASSERT(0);
}
return NULL;
}
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 */
extern void xfs_qm_destroy_quotainfo(struct xfs_mount *);
/* quota ops */
extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint);
extern int xfs_qm_scall_getquota(struct xfs_mount *mp,
xfs_dqid_t id,
xfs_dqtype_t type,
struct qc_dqblk *dst);
extern int xfs_qm_scall_getquota_next(struct xfs_mount *mp,
xfs_dqid_t *id,
xfs_dqtype_t type,
struct qc_dqblk *dst);
extern int xfs_qm_scall_setqlim(struct xfs_mount *mp,
xfs_dqid_t id,
xfs_dqtype_t type,
struct qc_dqblk *newlim);
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, xfs_dqtype_t type)
{
switch (type) {
case XFS_DQTYPE_USER:
return &qi->qi_usr_default;
case XFS_DQTYPE_GROUP:
return &qi->qi_grp_default;
case XFS_DQTYPE_PROJ:
return &qi->qi_prj_default;
default:
ASSERT(0);
return NULL;
}
}
#endif /* __XFS_QM_H__ */
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