| // 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_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_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 */ |
| xfs_qwarncnt_t warn; /* limit for warnings */ |
| }; |
| |
| /* 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 */ |
| |
| #define XFS_QM_BWARNLIMIT 5 |
| #define XFS_QM_IWARNLIMIT 5 |
| #define XFS_QM_RTBWARNLIMIT 5 |
| |
| 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__ */ |