[linux.git] / fs / xfs / xfs_qm.h

/*
 * 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"

struct xfs_inode;

extern struct kmem_zone	*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_core.d_blk_hardlimit && \
	!dqp->q_core.d_blk_softlimit && \
	!dqp->q_core.d_rtb_hardlimit && \
	!dqp->q_core.d_rtb_softlimit && \
	!dqp->q_core.d_ino_hardlimit && \
	!dqp->q_core.d_ino_softlimit && \
	!dqp->q_core.d_bcount && \
	!dqp->q_core.d_rtbcount && \
	!dqp->q_core.d_icount)

/*
 * 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

struct xfs_def_quota {
	xfs_qcnt_t       bhardlimit;     /* default data blk hard limit */
	xfs_qcnt_t       bsoftlimit;	 /* default data blk soft limit */
	xfs_qcnt_t       ihardlimit;	 /* default inode count hard limit */
	xfs_qcnt_t       isoftlimit;	 /* default inode count soft limit */
	xfs_qcnt_t	 rtbhardlimit;   /* default realtime blk hard limit */
	xfs_qcnt_t	 rtbsoftlimit;   /* default realtime blk soft limit */
};

/*
 * Various quota information for individual filesystems.
 * The mount structure keeps a pointer to this.
 */
typedef 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;
	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 */
	struct mutex	 qi_quotaofflock;/* to serialize quotaoff */
	xfs_filblks_t	 qi_dqchunklen;	 /* # BBs in a chunk of dqs */
	uint		 qi_dqperchunk;	 /* # ondisk dqs 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;
} xfs_quotainfo_t;

static inline struct radix_tree_root *
xfs_dquot_tree(
	struct xfs_quotainfo	*qi,
	int			type)
{
	switch (type) {
	case XFS_DQ_USER:
		return &qi->qi_uquota_tree;
	case XFS_DQ_GROUP:
		return &qi->qi_gquota_tree;
	case XFS_DQ_PROJ:
		return &qi->qi_pquota_tree;
	default:
		ASSERT(0);
	}
	return NULL;
}

static inline struct xfs_inode *
xfs_quota_inode(xfs_mount_t *mp, uint dq_flags)
{
	switch (dq_flags & XFS_DQ_ALLTYPES) {
	case XFS_DQ_USER:
		return mp->m_quotainfo->qi_uquotaip;
	case XFS_DQ_GROUP:
		return mp->m_quotainfo->qi_gquotaip;
	case XFS_DQ_PROJ:
		return mp->m_quotainfo->qi_pquotaip;
	default:
		ASSERT(0);
	}
	return NULL;
}

extern void	xfs_trans_mod_dquot(struct xfs_trans *,
					struct xfs_dquot *, uint, long);
extern int	xfs_trans_reserve_quota_bydquots(struct xfs_trans *,
			struct xfs_mount *, struct xfs_dquot *,
			struct xfs_dquot *, struct xfs_dquot *,
			long, long, uint);
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 *);

/* dquot stuff */
extern void		xfs_qm_dqpurge_all(struct xfs_mount *, uint);
extern void		xfs_qm_dqrele_all_inodes(struct xfs_mount *, uint);

/* quota ops */
extern int		xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint);
extern int		xfs_qm_scall_getquota(struct xfs_mount *, xfs_dqid_t *,
					uint, struct qc_dqblk *, uint);
extern int		xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint,
					struct qc_dqblk *);
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_dquot *dqp, struct xfs_quotainfo *qi)
{
	struct xfs_def_quota *defq;

	if (XFS_QM_ISUDQ(dqp))
		defq = &qi->qi_usr_default;
	else if (XFS_QM_ISGDQ(dqp))
		defq = &qi->qi_grp_default;
	else {
		ASSERT(XFS_QM_ISPDQ(dqp));
		defq = &qi->qi_prj_default;
	}
	return defq;
}

#endif /* __XFS_QM_H__ */
Commit	Line	Data
1da177e4	1	/*
4ce3121f NS	2	* Copyright (c) 2000-2005 Silicon Graphics, Inc.
4ce3121f NS	3	* All Rights Reserved.
1da177e4	4	*
4ce3121f NS	5	* This program is free software; you can redistribute it and/or
4ce3121f NS	6	* modify it under the terms of the GNU General Public License as
1da177e4 LT	7	* published by the Free Software Foundation.
1da177e4 LT	8	*
4ce3121f NS	9	* This program is distributed in the hope that it would be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
1da177e4	13	*
4ce3121f NS	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write the Free Software Foundation,
	16	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
1da177e4 LT	17	*/
	18	#ifndef __XFS_QM_H__
	19	#define __XFS_QM_H__
	20
	21	#include "xfs_dquot_item.h"
	22	#include "xfs_dquot.h"
1da177e4	23
1da177e4 LT	24	struct xfs_inode;
1da177e4 LT	25
a05931ce	26	extern struct kmem_zone *xfs_qm_dqtrxzone;
1da177e4	27
afbd123d JL	28	/*
	29	* Number of bmaps that we ask from bmapi when doing a quotacheck.
	30	* We make this restriction to keep the memory usage to a minimum.
	31	*/
	32	#define XFS_DQITER_MAP_SIZE 10
	33
	34	#define XFS_IS_DQUOT_UNINITIALIZED(dqp) ( \
	35	!dqp->q_core.d_blk_hardlimit && \
	36	!dqp->q_core.d_blk_softlimit && \
	37	!dqp->q_core.d_rtb_hardlimit && \
	38	!dqp->q_core.d_rtb_softlimit && \
	39	!dqp->q_core.d_ino_hardlimit && \
	40	!dqp->q_core.d_ino_softlimit && \
	41	!dqp->q_core.d_bcount && \
	42	!dqp->q_core.d_rtbcount && \
	43	!dqp->q_core.d_icount)
	44
1da177e4 LT	45	/*
	46	* This defines the unit of allocation of dquots.
	47	* Currently, it is just one file system block, and a 4K blk contains 30
	48	* (136 * 30 = 4080) dquots. It's probably not worth trying to make
	49	* this more dynamic.
	50	* XXXsup However, if this number is changed, we have to make sure that we don't
	51	* implicitly assume that we do allocations in chunks of a single filesystem
	52	* block in the dquot/xqm code.
	53	*/
	54	#define XFS_DQUOT_CLUSTER_SIZE_FSB (xfs_filblks_t)1
1da177e4	55
be607946 CM	56	struct xfs_def_quota {
	57	xfs_qcnt_t bhardlimit; /* default data blk hard limit */
	58	xfs_qcnt_t bsoftlimit; /* default data blk soft limit */
	59	xfs_qcnt_t ihardlimit; /* default inode count hard limit */
	60	xfs_qcnt_t isoftlimit; /* default inode count soft limit */
	61	xfs_qcnt_t rtbhardlimit; /* default realtime blk hard limit */
	62	xfs_qcnt_t rtbsoftlimit; /* default realtime blk soft limit */
	63	};
	64
1da177e4 LT	65	/*
	66	* Various quota information for individual filesystems.
	67	* The mount structure keeps a pointer to this.
	68	*/
	69	typedef struct xfs_quotainfo {
9f920f11 CH	70	struct radix_tree_root qi_uquota_tree;
9f920f11 CH	71	struct radix_tree_root qi_gquota_tree;
92f8ff73	72	struct radix_tree_root qi_pquota_tree;
9f920f11	73	struct mutex qi_tree_lock;
92f8ff73 CS	74	struct xfs_inode qi_uquotaip; / user quota inode */
	75	struct xfs_inode qi_gquotaip; / group quota inode */
	76	struct xfs_inode qi_pquotaip; / project quota inode */
cd56a39a	77	struct list_lru qi_lru;
3a25404b	78	int qi_dquots;
1da177e4 LT	79	time_t qi_btimelimit; /* limit for blks timer */
	80	time_t qi_itimelimit; /* limit for inodes timer */
	81	time_t qi_rtbtimelimit;/* limit for rt blks timer */
06d10dd9 NS	82	xfs_qwarncnt_t qi_bwarnlimit; /* limit for blks warnings */
	83	xfs_qwarncnt_t qi_iwarnlimit; /* limit for inodes warnings */
	84	xfs_qwarncnt_t qi_rtbwarnlimit;/* limit for rt blks warnings */
a0b0b8a5	85	struct mutex qi_quotaofflock;/* to serialize quotaoff */
1da177e4 LT	86	xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */
1da177e4 LT	87	uint qi_dqperchunk; /* # ondisk dqs in above chunk */
be607946 CM	88	struct xfs_def_quota qi_usr_default;
	89	struct xfs_def_quota qi_grp_default;
	90	struct xfs_def_quota qi_prj_default;
f8739c3c	91	struct shrinker qi_shrinker;
1da177e4 LT	92	} xfs_quotainfo_t;
1da177e4 LT	93
329e0875 CS	94	static inline struct radix_tree_root *
	95	xfs_dquot_tree(
	96	struct xfs_quotainfo *qi,
	97	int type)
	98	{
	99	switch (type) {
	100	case XFS_DQ_USER:
	101	return &qi->qi_uquota_tree;
	102	case XFS_DQ_GROUP:
329e0875	103	return &qi->qi_gquota_tree;
92f8ff73 CS	104	case XFS_DQ_PROJ:
92f8ff73 CS	105	return &qi->qi_pquota_tree;
329e0875 CS	106	default:
	107	ASSERT(0);
	108	}
	109	return NULL;
	110	}
995961c4 CS	111
995961c4 CS	112	static inline struct xfs_inode *
4d4d9523	113	xfs_quota_inode(xfs_mount_t *mp, uint dq_flags)
995961c4	114	{
4d4d9523	115	switch (dq_flags & XFS_DQ_ALLTYPES) {
995961c4	116	case XFS_DQ_USER:
4d4d9523	117	return mp->m_quotainfo->qi_uquotaip;
995961c4	118	case XFS_DQ_GROUP:
4d4d9523	119	return mp->m_quotainfo->qi_gquotaip;
92f8ff73	120	case XFS_DQ_PROJ:
4d4d9523	121	return mp->m_quotainfo->qi_pquotaip;
995961c4 CS	122	default:
	123	ASSERT(0);
	124	}
	125	return NULL;
	126	}
	127
113a5683 CS	128	extern void xfs_trans_mod_dquot(struct xfs_trans *,
	129	struct xfs_dquot *, uint, long);
	130	extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *,
	131	struct xfs_mount , struct xfs_dquot ,
92f8ff73 CS	132	struct xfs_dquot , struct xfs_dquot ,
92f8ff73 CS	133	long, long, uint);
113a5683 CS	134	extern void xfs_trans_dqjoin(struct xfs_trans , struct xfs_dquot );
113a5683 CS	135	extern void xfs_trans_log_dquot(struct xfs_trans , struct xfs_dquot );
1da177e4 LT	136
1da177e4 LT	137	/*
92f8ff73 CS	138	* We keep the usr, grp, and prj dquots separately so that locking will be
92f8ff73 CS	139	* easier to do at commit time. All transactions that we know of at this point
1da177e4 LT	140	* affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value.
1da177e4 LT	141	*/
0e6436d9 CS	142	enum {
	143	XFS_QM_TRANS_USR = 0,
	144	XFS_QM_TRANS_GRP,
92f8ff73	145	XFS_QM_TRANS_PRJ,
0e6436d9 CS	146	XFS_QM_TRANS_DQTYPES
0e6436d9 CS	147	};
1da177e4	148	#define XFS_QM_TRANS_MAXDQS 2
0e6436d9 CS	149	struct xfs_dquot_acct {
	150	struct xfs_dqtrx dqs[XFS_QM_TRANS_DQTYPES][XFS_QM_TRANS_MAXDQS];
	151	};
1da177e4 LT	152
	153	/*
	154	* Users are allowed to have a usage exceeding their softlimit for
	155	* a period this long.
	156	*/
	157	#define XFS_QM_BTIMELIMIT (7 * 246060) /* 1 week */
	158	#define XFS_QM_RTBTIMELIMIT (7 * 246060) /* 1 week */
	159	#define XFS_QM_ITIMELIMIT (7 * 246060) /* 1 week */
	160
	161	#define XFS_QM_BWARNLIMIT 5
	162	#define XFS_QM_IWARNLIMIT 5
06d10dd9	163	#define XFS_QM_RTBWARNLIMIT 5
1da177e4	164
113a5683	165	extern void xfs_qm_destroy_quotainfo(struct xfs_mount *);
1da177e4 LT	166
1da177e4 LT	167	/* dquot stuff */
113a5683 CS	168	extern void xfs_qm_dqpurge_all(struct xfs_mount *, uint);
113a5683 CS	169	extern void xfs_qm_dqrele_all_inodes(struct xfs_mount *, uint);
1da177e4	170
fcafb71b	171	/* quota ops */
113a5683	172	extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint);
296c24e2 ES	173	extern int xfs_qm_scall_getquota(struct xfs_mount , xfs_dqid_t ,
296c24e2 ES	174	uint, struct qc_dqblk *, uint);
b1366451	175	extern int xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint,
14bf61ff	176	struct qc_dqblk *);
113a5683 CS	177	extern int xfs_qm_scall_quotaon(struct xfs_mount *, uint);
113a5683 CS	178	extern int xfs_qm_scall_quotaoff(struct xfs_mount *, uint);
fcafb71b	179
be607946 CM	180	static inline struct xfs_def_quota *
	181	xfs_get_defquota(struct xfs_dquot dqp, struct xfs_quotainfo qi)
	182	{
	183	struct xfs_def_quota *defq;
	184
	185	if (XFS_QM_ISUDQ(dqp))
	186	defq = &qi->qi_usr_default;
	187	else if (XFS_QM_ISGDQ(dqp))
	188	defq = &qi->qi_grp_default;
	189	else {
	190	ASSERT(XFS_QM_ISPDQ(dqp));
	191	defq = &qi->qi_prj_default;
	192	}
	193	return defq;
	194	}
	195
1da177e4	196	#endif /* __XFS_QM_H__ */