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Diffstat (limited to 'fs/xfs/xfs_qm.h')
| -rw-r--r-- | fs/xfs/xfs_qm.h | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/fs/xfs/xfs_qm.h b/fs/xfs/xfs_qm.h new file mode 100644 index 000000000..9683f0457 --- /dev/null +++ b/fs/xfs/xfs_qm.h @@ -0,0 +1,171 @@ +// 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__ */ |