/* * 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 version 2 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. * * Further, this software is distributed without any warranty that it is * free of the rightful claim of any third person regarding infringement * or the like. Any license provided herein, whether implied or * otherwise, applies only to this software file. Patent licenses, if * any, provided herein do not apply to combinations of this program with * other software, or any other product whatsoever. * * You should have received a copy of the GNU General Public License along * with this program; if not, write the Free Software Foundation, Inc., 59 * Temple Place - Suite 330, Boston MA 02111-1307, USA. * * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, * Mountain View, CA 94043, or: * * http://www.sgi.com * * For further information regarding this notice, see: * * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ */ #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 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_NCSIZE_THRESHOLD 5000 #define XFS_QM_HASHSIZE_LOW 32 #define XFS_QM_HASHSIZE_HIGH 64 /* * We output a cmn_err when quotachecking a quota file with more than * this many fsbs. */ #define XFS_QM_BIG_QCHECK_NBLKS 500 /* * 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 */ lock_t qi_pinlock; /* dquot pinning mutex */ 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 num warnings */ xfs_qwarncnt_t qi_iwarnlimit; /* limit for num 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_LOCK(xqm) (mutex_lock(&xqm##_lock, PINOD)) #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_mount_reset_sbqflags(xfs_mount_t *); extern void xfs_qm_destroy_quotainfo(xfs_mount_t *); extern int xfs_qm_mount_quotas(xfs_mount_t *, int); extern void xfs_qm_mount_quotainit(xfs_mount_t *, uint); 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 *, short); /* 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(bhv_desc_t *, 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__ */