[linux-2.6-block.git] / fs / xfs / xfs_qm.h

// 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_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_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;
};

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;
}

static inline int
xfs_dquot_type(struct xfs_dquot *dqp)
{
	if (XFS_QM_ISUDQ(dqp))
		return XFS_DQ_USER;
	if (XFS_QM_ISGDQ(dqp))
		return XFS_DQ_GROUP;
	ASSERT(XFS_QM_ISPDQ(dqp));
	return XFS_DQ_PROJ;
}

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 *);

/* 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 *);
extern int		xfs_qm_scall_getquota_next(struct xfs_mount *,
					xfs_dqid_t *, uint, struct qc_dqblk *);
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_quotainfo *qi, int type)
{
	switch (type) {
	case XFS_DQ_USER:
		return &qi->qi_usr_default;
	case XFS_DQ_GROUP:
		return &qi->qi_grp_default;
	case XFS_DQ_PROJ:
		return &qi->qi_prj_default;
	default:
		ASSERT(0);
		return NULL;
	}
}

#endif /* __XFS_QM_H__ */
Commit	Line	Data
0b61f8a4	1	// SPDX-License-Identifier: GPL-2.0
1da177e4	2	/*
4ce3121f NS	3	* Copyright (c) 2000-2005 Silicon Graphics, Inc.
4ce3121f NS	4	* All Rights Reserved.
1da177e4 LT	5	*/
	6	#ifndef __XFS_QM_H__
	7	#define __XFS_QM_H__
	8
	9	#include "xfs_dquot_item.h"
	10	#include "xfs_dquot.h"
1da177e4	11
1da177e4 LT	12	struct xfs_inode;
1da177e4 LT	13
a05931ce	14	extern struct kmem_zone *xfs_qm_dqtrxzone;
1da177e4	15
afbd123d JL	16	/*
	17	* Number of bmaps that we ask from bmapi when doing a quotacheck.
	18	* We make this restriction to keep the memory usage to a minimum.
	19	*/
	20	#define XFS_DQITER_MAP_SIZE 10
	21
	22	#define XFS_IS_DQUOT_UNINITIALIZED(dqp) ( \
d3537cf9 DW	23	!dqp->q_blk.hardlimit && \
	24	!dqp->q_blk.softlimit && \
	25	!dqp->q_rtb.hardlimit && \
	26	!dqp->q_rtb.softlimit && \
	27	!dqp->q_ino.hardlimit && \
	28	!dqp->q_ino.softlimit && \
be37d40c DW	29	!dqp->q_blk.count && \
	30	!dqp->q_rtb.count && \
	31	!dqp->q_ino.count)
afbd123d	32
438769e3 DW	33	struct xfs_quota_limits {
	34	xfs_qcnt_t hard; /* default hard limit */
	35	xfs_qcnt_t soft; /* default soft limit */
	36	time64_t time; /* limit for timers */
	37	xfs_qwarncnt_t warn; /* limit for warnings */
	38	};
	39
e850301f	40	/* Defaults for each quota type: time limits, warn limits, usage limits */
be607946	41	struct xfs_def_quota {
438769e3 DW	42	struct xfs_quota_limits blk;
	43	struct xfs_quota_limits ino;
	44	struct xfs_quota_limits rtb;
be607946 CM	45	};
be607946 CM	46
1da177e4 LT	47	/*
	48	* Various quota information for individual filesystems.
	49	* The mount structure keeps a pointer to this.
	50	*/
c072fbef	51	struct xfs_quotainfo {
8d077f5b ES	52	struct radix_tree_root qi_uquota_tree;
	53	struct radix_tree_root qi_gquota_tree;
	54	struct radix_tree_root qi_pquota_tree;
	55	struct mutex qi_tree_lock;
92f8ff73 CS	56	struct xfs_inode qi_uquotaip; / user quota inode */
	57	struct xfs_inode qi_gquotaip; / group quota inode */
	58	struct xfs_inode qi_pquotaip; / project quota inode */
8d077f5b ES	59	struct list_lru qi_lru;
8d077f5b ES	60	int qi_dquots;
8d077f5b ES	61	struct mutex qi_quotaofflock;/* to serialize quotaoff */
	62	xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */
	63	uint qi_dqperchunk; /* # ondisk dq in above chunk */
be607946 CM	64	struct xfs_def_quota qi_usr_default;
	65	struct xfs_def_quota qi_grp_default;
	66	struct xfs_def_quota qi_prj_default;
8d077f5b	67	struct shrinker qi_shrinker;
c072fbef	68	};
1da177e4	69
329e0875 CS	70	static inline struct radix_tree_root *
	71	xfs_dquot_tree(
	72	struct xfs_quotainfo *qi,
	73	int type)
	74	{
	75	switch (type) {
	76	case XFS_DQ_USER:
	77	return &qi->qi_uquota_tree;
	78	case XFS_DQ_GROUP:
329e0875	79	return &qi->qi_gquota_tree;
92f8ff73 CS	80	case XFS_DQ_PROJ:
92f8ff73 CS	81	return &qi->qi_pquota_tree;
329e0875 CS	82	default:
	83	ASSERT(0);
	84	}
	85	return NULL;
	86	}
995961c4 CS	87
995961c4 CS	88	static inline struct xfs_inode *
4d4d9523	89	xfs_quota_inode(xfs_mount_t *mp, uint dq_flags)
995961c4	90	{
4d4d9523	91	switch (dq_flags & XFS_DQ_ALLTYPES) {
995961c4	92	case XFS_DQ_USER:
4d4d9523	93	return mp->m_quotainfo->qi_uquotaip;
995961c4	94	case XFS_DQ_GROUP:
4d4d9523	95	return mp->m_quotainfo->qi_gquotaip;
92f8ff73	96	case XFS_DQ_PROJ:
4d4d9523	97	return mp->m_quotainfo->qi_pquotaip;
995961c4 CS	98	default:
	99	ASSERT(0);
	100	}
	101	return NULL;
	102	}
	103
ce6e7e79 ES	104	static inline int
	105	xfs_dquot_type(struct xfs_dquot *dqp)
	106	{
	107	if (XFS_QM_ISUDQ(dqp))
	108	return XFS_DQ_USER;
	109	if (XFS_QM_ISGDQ(dqp))
	110	return XFS_DQ_GROUP;
	111	ASSERT(XFS_QM_ISPDQ(dqp));
	112	return XFS_DQ_PROJ;
	113	}
	114
903b1fc2 DW	115	extern void xfs_trans_mod_dquot(struct xfs_trans tp, struct xfs_dquot dqp,
903b1fc2 DW	116	uint field, int64_t delta);
113a5683 CS	117	extern void xfs_trans_dqjoin(struct xfs_trans , struct xfs_dquot );
113a5683 CS	118	extern void xfs_trans_log_dquot(struct xfs_trans , struct xfs_dquot );
1da177e4 LT	119
1da177e4 LT	120	/*
92f8ff73 CS	121	* We keep the usr, grp, and prj dquots separately so that locking will be
92f8ff73 CS	122	* easier to do at commit time. All transactions that we know of at this point
1da177e4 LT	123	* affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value.
1da177e4 LT	124	*/
0e6436d9 CS	125	enum {
	126	XFS_QM_TRANS_USR = 0,
	127	XFS_QM_TRANS_GRP,
92f8ff73	128	XFS_QM_TRANS_PRJ,
0e6436d9 CS	129	XFS_QM_TRANS_DQTYPES
0e6436d9 CS	130	};
1da177e4	131	#define XFS_QM_TRANS_MAXDQS 2
0e6436d9 CS	132	struct xfs_dquot_acct {
	133	struct xfs_dqtrx dqs[XFS_QM_TRANS_DQTYPES][XFS_QM_TRANS_MAXDQS];
	134	};
1da177e4 LT	135
	136	/*
	137	* Users are allowed to have a usage exceeding their softlimit for
	138	* a period this long.
	139	*/
	140	#define XFS_QM_BTIMELIMIT (7 * 246060) /* 1 week */
	141	#define XFS_QM_RTBTIMELIMIT (7 * 246060) /* 1 week */
	142	#define XFS_QM_ITIMELIMIT (7 * 246060) /* 1 week */
	143
	144	#define XFS_QM_BWARNLIMIT 5
	145	#define XFS_QM_IWARNLIMIT 5
06d10dd9	146	#define XFS_QM_RTBWARNLIMIT 5
1da177e4	147
113a5683	148	extern void xfs_qm_destroy_quotainfo(struct xfs_mount *);
1da177e4 LT	149
1da177e4 LT	150	/* dquot stuff */
113a5683 CS	151	extern void xfs_qm_dqpurge_all(struct xfs_mount *, uint);
113a5683 CS	152	extern void xfs_qm_dqrele_all_inodes(struct xfs_mount *, uint);
1da177e4	153
fcafb71b	154	/* quota ops */
113a5683	155	extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint);
2e330e76 DW	156	extern int xfs_qm_scall_getquota(struct xfs_mount *, xfs_dqid_t,
	157	uint, struct qc_dqblk *);
	158	extern int xfs_qm_scall_getquota_next(struct xfs_mount *,
	159	xfs_dqid_t , uint, struct qc_dqblk );
b1366451	160	extern int xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint,
14bf61ff	161	struct qc_dqblk *);
113a5683 CS	162	extern int xfs_qm_scall_quotaon(struct xfs_mount *, uint);
113a5683 CS	163	extern int xfs_qm_scall_quotaoff(struct xfs_mount *, uint);
fcafb71b	164
be607946	165	static inline struct xfs_def_quota *
ce6e7e79	166	xfs_get_defquota(struct xfs_quotainfo *qi, int type)
be607946	167	{
ce6e7e79 ES	168	switch (type) {
	169	case XFS_DQ_USER:
	170	return &qi->qi_usr_default;
	171	case XFS_DQ_GROUP:
	172	return &qi->qi_grp_default;
	173	case XFS_DQ_PROJ:
	174	return &qi->qi_prj_default;
	175	default:
	176	ASSERT(0);
	177	return NULL;
be607946	178	}
be607946 CM	179	}
be607946 CM	180
1da177e4	181	#endif /* __XFS_QM_H__ */