| /* |
| * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
| * All Rights Reserved. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it would be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| #ifndef __XFS_QM_H__ |
| #define __XFS_QM_H__ |
| |
| #include "xfs_dquot_item.h" |
| #include "xfs_dquot.h" |
| #include "xfs_quota_priv.h" |
| #include "xfs_qm_stats.h" |
| |
| struct xfs_qm; |
| struct xfs_inode; |
| |
| extern uint ndquot; |
| extern mutex_t xfs_Gqm_lock; |
| extern struct xfs_qm *xfs_Gqm; |
| extern kmem_zone_t *qm_dqzone; |
| extern kmem_zone_t *qm_dqtrxzone; |
| |
| /* |
| * Used in xfs_qm_sync called by xfs_sync to count the max times that it can |
| * iterate over the mountpt's dquot list in one call. |
| */ |
| #define XFS_QM_SYNC_MAX_RESTARTS 7 |
| |
| /* |
| * Ditto, for xfs_qm_dqreclaim_one. |
| */ |
| #define XFS_QM_RECLAIM_MAX_RESTARTS 4 |
| |
| /* |
| * Ideal ratio of free to in use dquots. Quota manager makes an attempt |
| * to keep this balance. |
| */ |
| #define XFS_QM_DQFREE_RATIO 2 |
| |
| /* |
| * Dquot hashtable constants/threshold values. |
| */ |
| #define XFS_QM_HASHSIZE_LOW (PAGE_SIZE / sizeof(xfs_dqhash_t)) |
| #define XFS_QM_HASHSIZE_HIGH ((PAGE_SIZE * 4) / sizeof(xfs_dqhash_t)) |
| |
| /* |
| * 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 |
| /* |
| * When doing a quotacheck, we log dquot clusters of this many FSBs at most |
| * in a single transaction. We don't want to ask for too huge a log reservation. |
| */ |
| #define XFS_QM_MAX_DQCLUSTER_LOGSZ 3 |
| |
| typedef xfs_dqhash_t xfs_dqlist_t; |
| /* |
| * The freelist head. The first two fields match the first two in the |
| * xfs_dquot_t structure (in xfs_dqmarker_t) |
| */ |
| typedef struct xfs_frlist { |
| struct xfs_dquot *qh_next; |
| struct xfs_dquot *qh_prev; |
| mutex_t qh_lock; |
| uint qh_version; |
| uint qh_nelems; |
| } xfs_frlist_t; |
| |
| /* |
| * Quota Manager (global) structure. Lives only in core. |
| */ |
| typedef struct xfs_qm { |
| xfs_dqlist_t *qm_usr_dqhtable;/* udquot hash table */ |
| xfs_dqlist_t *qm_grp_dqhtable;/* gdquot hash table */ |
| uint qm_dqhashmask; /* # buckets in dq hashtab - 1 */ |
| xfs_frlist_t qm_dqfreelist; /* freelist of dquots */ |
| atomic_t qm_totaldquots; /* total incore dquots */ |
| uint qm_nrefs; /* file systems with quota on */ |
| int qm_dqfree_ratio;/* ratio of free to inuse dquots */ |
| kmem_zone_t *qm_dqzone; /* dquot mem-alloc zone */ |
| kmem_zone_t *qm_dqtrxzone; /* t_dqinfo of transactions */ |
| } xfs_qm_t; |
| |
| /* |
| * Various quota information for individual filesystems. |
| * The mount structure keeps a pointer to this. |
| */ |
| typedef struct xfs_quotainfo { |
| xfs_inode_t *qi_uquotaip; /* user quota inode */ |
| xfs_inode_t *qi_gquotaip; /* group quota inode */ |
| xfs_dqlist_t qi_dqlist; /* all dquots in filesys */ |
| int qi_dqreclaims; /* a change here indicates |
| a removal in the dqlist */ |
| time_t qi_btimelimit; /* limit for blks timer */ |
| time_t qi_itimelimit; /* limit for inodes timer */ |
| time_t qi_rtbtimelimit;/* limit for rt blks timer */ |
| xfs_qwarncnt_t qi_bwarnlimit; /* limit for blks warnings */ |
| xfs_qwarncnt_t qi_iwarnlimit; /* limit for inodes warnings */ |
| xfs_qwarncnt_t qi_rtbwarnlimit;/* limit for rt blks warnings */ |
| mutex_t qi_quotaofflock;/* to serialize quotaoff */ |
| xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */ |
| uint qi_dqperchunk; /* # ondisk dqs in above chunk */ |
| xfs_qcnt_t qi_bhardlimit; /* default data blk hard limit */ |
| xfs_qcnt_t qi_bsoftlimit; /* default data blk soft limit */ |
| xfs_qcnt_t qi_ihardlimit; /* default inode count hard limit */ |
| xfs_qcnt_t qi_isoftlimit; /* default inode count soft limit */ |
| xfs_qcnt_t qi_rtbhardlimit;/* default realtime blk hard limit */ |
| xfs_qcnt_t qi_rtbsoftlimit;/* default realtime blk soft limit */ |
| } xfs_quotainfo_t; |
| |
| |
| extern xfs_dqtrxops_t xfs_trans_dquot_ops; |
| |
| extern void xfs_trans_mod_dquot(xfs_trans_t *, xfs_dquot_t *, uint, long); |
| extern int xfs_trans_reserve_quota_bydquots(xfs_trans_t *, xfs_mount_t *, |
| xfs_dquot_t *, xfs_dquot_t *, long, long, uint); |
| extern void xfs_trans_dqjoin(xfs_trans_t *, xfs_dquot_t *); |
| extern void xfs_trans_log_dquot(xfs_trans_t *, xfs_dquot_t *); |
| |
| /* |
| * We keep the usr and grp 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. |
| */ |
| #define XFS_QM_TRANS_MAXDQS 2 |
| typedef struct xfs_dquot_acct { |
| xfs_dqtrx_t dqa_usrdquots[XFS_QM_TRANS_MAXDQS]; |
| xfs_dqtrx_t dqa_grpdquots[XFS_QM_TRANS_MAXDQS]; |
| } xfs_dquot_acct_t; |
| |
| /* |
| * 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 |
| |
| #define XFS_QM_LOCK(xqm) (mutex_lock(&xqm##_lock)) |
| #define XFS_QM_UNLOCK(xqm) (mutex_unlock(&xqm##_lock)) |
| #define XFS_QM_HOLD(xqm) ((xqm)->qm_nrefs++) |
| #define XFS_QM_RELE(xqm) ((xqm)->qm_nrefs--) |
| |
| extern void xfs_qm_destroy_quotainfo(xfs_mount_t *); |
| extern void xfs_qm_mount_quotas(xfs_mount_t *); |
| extern int xfs_qm_quotacheck(xfs_mount_t *); |
| extern void xfs_qm_unmount_quotadestroy(xfs_mount_t *); |
| extern int xfs_qm_unmount_quotas(xfs_mount_t *); |
| extern int xfs_qm_write_sb_changes(xfs_mount_t *, __int64_t); |
| extern int xfs_qm_sync(xfs_mount_t *, int); |
| |
| /* dquot stuff */ |
| extern boolean_t xfs_qm_dqalloc_incore(xfs_dquot_t **); |
| extern int xfs_qm_dqattach(xfs_inode_t *, uint); |
| extern void xfs_qm_dqdetach(xfs_inode_t *); |
| extern int xfs_qm_dqpurge_all(xfs_mount_t *, uint); |
| extern void xfs_qm_dqrele_all_inodes(xfs_mount_t *, uint); |
| |
| /* vop stuff */ |
| extern int xfs_qm_vop_dqalloc(xfs_mount_t *, xfs_inode_t *, |
| uid_t, gid_t, prid_t, uint, |
| xfs_dquot_t **, xfs_dquot_t **); |
| extern void xfs_qm_vop_dqattach_and_dqmod_newinode( |
| xfs_trans_t *, xfs_inode_t *, |
| xfs_dquot_t *, xfs_dquot_t *); |
| extern int xfs_qm_vop_rename_dqattach(xfs_inode_t **); |
| extern xfs_dquot_t * xfs_qm_vop_chown(xfs_trans_t *, xfs_inode_t *, |
| xfs_dquot_t **, xfs_dquot_t *); |
| extern int xfs_qm_vop_chown_reserve(xfs_trans_t *, xfs_inode_t *, |
| xfs_dquot_t *, xfs_dquot_t *, uint); |
| |
| /* list stuff */ |
| extern void xfs_qm_freelist_append(xfs_frlist_t *, xfs_dquot_t *); |
| extern void xfs_qm_freelist_unlink(xfs_dquot_t *); |
| extern int xfs_qm_freelist_lock_nowait(xfs_qm_t *); |
| |
| /* system call interface */ |
| extern int xfs_qm_quotactl(struct xfs_mount *, int, int, |
| xfs_caddr_t); |
| |
| #ifdef DEBUG |
| extern int xfs_qm_internalqcheck(xfs_mount_t *); |
| #else |
| #define xfs_qm_internalqcheck(mp) (0) |
| #endif |
| |
| #endif /* __XFS_QM_H__ */ |