[thirdparty/xfsprogs-dev.git] / include / xfs_quota.h

/*
 * Copyright (c) 2000-2003 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_QUOTA_H__
#define __XFS_QUOTA_H__

/*
 * The ondisk form of a dquot structure.
 */
#define XFS_DQUOT_MAGIC		0x4451		/* 'DQ' */
#define XFS_DQUOT_VERSION	(u_int8_t)0x01	/* latest version number */

/*
 * uid_t and gid_t are hard-coded to 32 bits in the inode.
 * Hence, an 'id' in a dquot is 32 bits..
 */
typedef __int32_t	xfs_dqid_t;

/*
 * Eventhough users may not have quota limits occupying all 64-bits,
 * they may need 64-bit accounting. Hence, 64-bit quota-counters,
 * and quota-limits. This is a waste in the common case, but hey ...
 */
typedef __uint64_t	xfs_qcnt_t;
typedef __uint16_t	xfs_qwarncnt_t;

/*
 * This is the main portion of the on-disk representation of quota
 * information for a user. This is the q_core of the xfs_dquot_t that
 * is kept in kernel memory. We pad this with some more expansion room
 * to construct the on disk structure.
 */
typedef struct	xfs_disk_dquot {
/*16*/	u_int16_t	d_magic;	/* dquot magic = XFS_DQUOT_MAGIC */
/*8 */	u_int8_t	d_version;	/* dquot version */
/*8 */	u_int8_t	d_flags;	/* XFS_DQ_USER/PROJ/GROUP */
/*32*/	xfs_dqid_t	d_id;		/* user,project,group id */
/*64*/	xfs_qcnt_t	d_blk_hardlimit;/* absolute limit on disk blks */
/*64*/	xfs_qcnt_t	d_blk_softlimit;/* preferred limit on disk blks */
/*64*/	xfs_qcnt_t	d_ino_hardlimit;/* maximum # allocated inodes */
/*64*/	xfs_qcnt_t	d_ino_softlimit;/* preferred inode limit */
/*64*/	xfs_qcnt_t	d_bcount;	/* disk blocks owned by the user */
/*64*/	xfs_qcnt_t	d_icount;	/* inodes owned by the user */
/*32*/	__int32_t	d_itimer;	/* zero if within inode limits if not,
					   this is when we refuse service */
/*32*/	__int32_t	d_btimer;	/* similar to above; for disk blocks */
/*16*/	xfs_qwarncnt_t	d_iwarns;	/* warnings issued wrt num inodes */
/*16*/	xfs_qwarncnt_t	d_bwarns;	/* warnings issued wrt disk blocks */
/*32*/	__int32_t	d_pad0;		/* 64 bit align */
/*64*/	xfs_qcnt_t	d_rtb_hardlimit;/* absolute limit on realtime blks */
/*64*/	xfs_qcnt_t	d_rtb_softlimit;/* preferred limit on RT disk blks */
/*64*/	xfs_qcnt_t	d_rtbcount;	/* realtime blocks owned */
/*32*/	__int32_t	d_rtbtimer;	/* similar to above; for RT disk blocks */
/*16*/	xfs_qwarncnt_t	d_rtbwarns;	/* warnings issued wrt RT disk blocks */
/*16*/	__uint16_t	d_pad;
} xfs_disk_dquot_t;

/*
 * This is what goes on disk. This is separated from the xfs_disk_dquot because
 * carrying the unnecessary padding would be a waste of memory.
 */
typedef struct xfs_dqblk {
	xfs_disk_dquot_t  dd_diskdq;	/* portion that lives incore as well */
	char		  dd_fill[32];	/* filling for posterity */
} xfs_dqblk_t;

/*
 * flags for q_flags field in the dquot.
 */
#define XFS_DQ_USER		0x0001		/* a user quota */
/* #define XFS_DQ_PROJ		0x0002		-- project quota (IRIX) */
#define XFS_DQ_GROUP		0x0004		/* a group quota */
#define XFS_DQ_FLOCKED		0x0008		/* flush lock taken */
#define XFS_DQ_DIRTY		0x0010		/* dquot is dirty */
#define XFS_DQ_WANT		0x0020		/* for lookup/reclaim race */
#define XFS_DQ_INACTIVE		0x0040		/* dq off mplist & hashlist */
#define XFS_DQ_MARKER		0x0080		/* sentinel */

/*
 * In the worst case, when both user and group quotas are on,
 * we can have a max of three dquots changing in a single transaction.
 */
#define XFS_DQUOT_LOGRES(mp)	(sizeof(xfs_disk_dquot_t) * 3)


/*
 * These are the structures used to lay out dquots and quotaoff
 * records on the log. Quite similar to those of inodes.
 */

/*
 * log format struct for dquots.
 * The first two fields must be the type and size fitting into
 * 32 bits : log_recovery code assumes that.
 */
typedef struct xfs_dq_logformat {
	__uint16_t		qlf_type;      /* dquot log item type */
	__uint16_t		qlf_size;      /* size of this item */
	xfs_dqid_t		qlf_id;	       /* usr/grp id number : 32 bits */
	__int64_t		qlf_blkno;     /* blkno of dquot buffer */
	__int32_t		qlf_len;       /* len of dquot buffer */
	__uint32_t		qlf_boffset;   /* off of dquot in buffer */
} xfs_dq_logformat_t;

/*
 * log format struct for QUOTAOFF records.
 * The first two fields must be the type and size fitting into
 * 32 bits : log_recovery code assumes that.
 * We write two LI_QUOTAOFF logitems per quotaoff, the last one keeps a pointer
 * to the first and ensures that the first logitem is taken out of the AIL
 * only when the last one is securely committed.
 */
typedef struct xfs_qoff_logformat {
	unsigned short		qf_type;	/* quotaoff log item type */
	unsigned short		qf_size;	/* size of this item */
	unsigned int		qf_flags;	/* USR and/or GRP */
	char			qf_pad[12];	/* padding for future */
} xfs_qoff_logformat_t;


/*
 * Disk quotas status in m_qflags, and also sb_qflags. 16 bits.
 */
#define XFS_UQUOTA_ACCT 0x0001	/* user quota accounting ON */
#define XFS_UQUOTA_ENFD 0x0002	/* user quota limits enforced */
#define XFS_UQUOTA_CHKD 0x0004	/* quotacheck run on usr quotas */
#define XFS_PQUOTA_ACCT 0x0008	/* (IRIX) project quota accounting ON */
#define XFS_GQUOTA_ENFD 0x0010	/* group quota limits enforced */
#define XFS_GQUOTA_CHKD 0x0020	/* quotacheck run on grp quotas */
#define XFS_GQUOTA_ACCT 0x0040	/* group quota accounting ON */

/*
 * Incore only flags for quotaoff - these bits get cleared when quota(s)
 * are in the process of getting turned off. These flags are in m_qflags but
 * never in sb_qflags.
 */
#define XFS_UQUOTA_ACTIVE	0x0080	/* uquotas are being turned off */
#define XFS_GQUOTA_ACTIVE	0x0100	/* gquotas are being turned off */

/*
 * Checking XFS_IS_*QUOTA_ON() while holding any inode lock guarantees
 * quota will be not be switched off as long as that inode lock is held.
 */
#define XFS_IS_QUOTA_ON(mp)	((mp)->m_qflags & (XFS_UQUOTA_ACTIVE | \
						   XFS_GQUOTA_ACTIVE))
#define XFS_IS_UQUOTA_ON(mp)	((mp)->m_qflags & XFS_UQUOTA_ACTIVE)
#define XFS_IS_GQUOTA_ON(mp)	((mp)->m_qflags & XFS_GQUOTA_ACTIVE)

/*
 * Flags to tell various functions what to do. Not all of these are meaningful
 * to a single function. None of these XFS_QMOPT_* flags are meant to have
 * persistent values (ie. their values can and will change between versions)
 */
#define XFS_QMOPT_DQLOCK	0x0000001 /* dqlock */
#define XFS_QMOPT_DQALLOC	0x0000002 /* alloc dquot ondisk if needed */
#define XFS_QMOPT_UQUOTA	0x0000004 /* user dquot requested */
#define XFS_QMOPT_GQUOTA	0x0000008 /* group dquot requested */
#define XFS_QMOPT_FORCE_RES	0x0000010 /* ignore quota limits */
#define XFS_QMOPT_DQSUSER	0x0000020 /* don't cache super users dquot */
#define XFS_QMOPT_SBVERSION	0x0000040 /* change superblock version num */
#define XFS_QMOPT_QUOTAOFF	0x0000080 /* quotas are being turned off */
#define XFS_QMOPT_UMOUNTING	0x0000100 /* filesys is being unmounted */
#define XFS_QMOPT_DOLOG		0x0000200 /* log buf changes (in quotacheck) */
#define XFS_QMOPT_DOWARN	0x0000400 /* increase warning cnt if necessary */
#define XFS_QMOPT_ILOCKED	0x0000800 /* inode is already locked (excl) */
#define XFS_QMOPT_DQREPAIR	0x0001000 /* repair dquot, if damaged. */

/*
 * flags to xfs_trans_mod_dquot to indicate which field needs to be
 * modified.
 */
#define XFS_QMOPT_RES_REGBLKS	0x0010000
#define XFS_QMOPT_RES_RTBLKS	0x0020000
#define XFS_QMOPT_BCOUNT	0x0040000
#define XFS_QMOPT_ICOUNT	0x0080000
#define XFS_QMOPT_RTBCOUNT	0x0100000
#define XFS_QMOPT_DELBCOUNT	0x0200000
#define XFS_QMOPT_DELRTBCOUNT	0x0400000
#define XFS_QMOPT_RES_INOS	0x0800000

/*
 * flags for dqflush and dqflush_all.
 */
#define XFS_QMOPT_SYNC		0x1000000
#define XFS_QMOPT_ASYNC		0x2000000
#define XFS_QMOPT_DELWRI	0x4000000

/*
 * flags for dqalloc.
 */
#define XFS_QMOPT_INHERIT	0x8000000

/*
 * flags to xfs_trans_mod_dquot.
 */
#define XFS_TRANS_DQ_RES_BLKS	XFS_QMOPT_RES_REGBLKS
#define XFS_TRANS_DQ_RES_RTBLKS XFS_QMOPT_RES_RTBLKS
#define XFS_TRANS_DQ_RES_INOS	XFS_QMOPT_RES_INOS
#define XFS_TRANS_DQ_BCOUNT	XFS_QMOPT_BCOUNT
#define XFS_TRANS_DQ_DELBCOUNT	XFS_QMOPT_DELBCOUNT
#define XFS_TRANS_DQ_ICOUNT	XFS_QMOPT_ICOUNT
#define XFS_TRANS_DQ_RTBCOUNT	XFS_QMOPT_RTBCOUNT
#define XFS_TRANS_DQ_DELRTBCOUNT XFS_QMOPT_DELRTBCOUNT


#define XFS_QMOPT_QUOTALL	(XFS_QMOPT_UQUOTA|XFS_QMOPT_GQUOTA)
#define XFS_QMOPT_RESBLK_MASK	(XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_RES_RTBLKS)

#ifdef __KERNEL__
/*
 * This check is done typically without holding the inode lock;
 * that may seem racey, but it is harmless in the context that it is used.
 * The inode cannot go inactive as long a reference is kept, and
 * therefore if dquot(s) were attached, they'll stay consistent.
 * If, for example, the ownership of the inode changes while
 * we didn't have the inode locked, the appropriate dquot(s) will be
 * attached atomically.
 */
#define XFS_NOT_DQATTACHED(mp, ip) ((XFS_IS_UQUOTA_ON(mp) &&\
				     (ip)->i_udquot == NULL) || \
				    (XFS_IS_GQUOTA_ON(mp) && \
				     (ip)->i_gdquot == NULL))

#define XFS_QM_NEED_QUOTACHECK(mp) ((XFS_IS_UQUOTA_ON(mp) && \
				     (mp->m_sb.sb_qflags & \
				      XFS_UQUOTA_CHKD) == 0) || \
				    (XFS_IS_GQUOTA_ON(mp) && \
				     (mp->m_sb.sb_qflags & \
				      XFS_GQUOTA_CHKD) == 0))

#define XFS_MOUNT_QUOTA_ALL	(XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD|\
				 XFS_UQUOTA_CHKD|XFS_GQUOTA_ACCT|\
				 XFS_GQUOTA_ENFD|XFS_GQUOTA_CHKD)
#define XFS_MOUNT_QUOTA_MASK	(XFS_MOUNT_QUOTA_ALL | XFS_UQUOTA_ACTIVE | \
				 XFS_GQUOTA_ACTIVE)


/*
 * The structure kept inside the xfs_trans_t keep track of dquot changes
 * within a transaction and apply them later.
 */
typedef struct xfs_dqtrx {
	struct xfs_dquot *qt_dquot;	  /* the dquot this refers to */
	ulong		qt_blk_res;	  /* blks reserved on a dquot */
	ulong		qt_blk_res_used;  /* blks used from the reservation */
	ulong		qt_ino_res;	  /* inode reserved on a dquot */
	ulong		qt_ino_res_used;  /* inodes used from the reservation */
	long		qt_bcount_delta;  /* dquot blk count changes */
	long		qt_delbcnt_delta; /* delayed dquot blk count changes */
	long		qt_icount_delta;  /* dquot inode count changes */
	ulong		qt_rtblk_res;	  /* # blks reserved on a dquot */
	ulong		qt_rtblk_res_used;/* # blks used from reservation */
	long		qt_rtbcount_delta;/* dquot realtime blk changes */
	long		qt_delrtb_delta;  /* delayed RT blk count changes */
} xfs_dqtrx_t;

/*
 * Dquot transaction functions, used if quota is enabled.
 */
typedef void	(*qo_dup_dqinfo_t)(struct xfs_trans *, struct xfs_trans *);
typedef void	(*qo_mod_dquot_byino_t)(struct xfs_trans *,
				struct xfs_inode *, uint, long);
typedef void	(*qo_free_dqinfo_t)(struct xfs_trans *);
typedef void	(*qo_apply_dquot_deltas_t)(struct xfs_trans *);
typedef void	(*qo_unreserve_and_mod_dquots_t)(struct xfs_trans *);
typedef int	(*qo_reserve_quota_nblks_t)(
				struct xfs_trans *, struct xfs_mount *,
				struct xfs_inode *, long, long, uint);
typedef int	(*qo_reserve_quota_bydquots_t)(
				struct xfs_trans *, struct xfs_mount *,
				struct xfs_dquot *, struct xfs_dquot *,
				long, long, uint);
typedef struct xfs_dqtrxops {
	qo_dup_dqinfo_t			qo_dup_dqinfo;
	qo_free_dqinfo_t		qo_free_dqinfo;
	qo_mod_dquot_byino_t		qo_mod_dquot_byino;
	qo_apply_dquot_deltas_t		qo_apply_dquot_deltas;
	qo_reserve_quota_nblks_t	qo_reserve_quota_nblks;
	qo_reserve_quota_bydquots_t	qo_reserve_quota_bydquots;
	qo_unreserve_and_mod_dquots_t	qo_unreserve_and_mod_dquots;
} xfs_dqtrxops_t;

#define XFS_DQTRXOP(mp, tp, op, args...) \
			((mp)->m_qm_ops.xfs_dqtrxops ? \
			((mp)->m_qm_ops.xfs_dqtrxops->op)(tp, ## args) : 0)

#define XFS_TRANS_DUP_DQINFO(mp, otp, ntp) \
	XFS_DQTRXOP(mp, otp, qo_dup_dqinfo, ntp)
#define XFS_TRANS_FREE_DQINFO(mp, tp) \
	XFS_DQTRXOP(mp, tp, qo_free_dqinfo)
#define XFS_TRANS_MOD_DQUOT_BYINO(mp, tp, ip, field, delta) \
	XFS_DQTRXOP(mp, tp, qo_mod_dquot_byino, ip, field, delta)
#define XFS_TRANS_APPLY_DQUOT_DELTAS(mp, tp) \
	XFS_DQTRXOP(mp, tp, qo_apply_dquot_deltas)
#define XFS_TRANS_RESERVE_QUOTA_NBLKS(mp, tp, ip, nblks, ninos, fl) \
	XFS_DQTRXOP(mp, tp, qo_reserve_quota_nblks, mp, ip, nblks, ninos, fl)
#define XFS_TRANS_RESERVE_QUOTA_BYDQUOTS(mp, tp, ud, gd, nb, ni, fl) \
	XFS_DQTRXOP(mp, tp, qo_reserve_quota_bydquots, mp, ud, gd, nb, ni, fl)
#define XFS_TRANS_UNRESERVE_AND_MOD_DQUOTS(mp, tp) \
	XFS_DQTRXOP(mp, tp, qo_unreserve_and_mod_dquots)

#define XFS_TRANS_RESERVE_BLKQUOTA(mp, tp, ip, nblks) \
	XFS_TRANS_RESERVE_QUOTA_NBLKS(mp, tp, ip, nblks, 0, \
				XFS_QMOPT_RES_REGBLKS)
#define XFS_TRANS_RESERVE_BLKQUOTA_FORCE(mp, tp, ip, nblks) \
	XFS_TRANS_RESERVE_QUOTA_NBLKS(mp, tp, ip, nblks, 0, \
				XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_FORCE_RES)
#define XFS_TRANS_UNRESERVE_BLKQUOTA(mp, tp, ip, nblks) \
	XFS_TRANS_RESERVE_QUOTA_NBLKS(mp, tp, ip, -(nblks), 0, \
				XFS_QMOPT_RES_REGBLKS)
#define XFS_TRANS_RESERVE_QUOTA(mp, tp, ud, gd, nb, ni, f) \
	XFS_TRANS_RESERVE_QUOTA_BYDQUOTS(mp, tp, ud, gd, nb, ni, \
				f | XFS_QMOPT_RES_REGBLKS)
#define XFS_TRANS_UNRESERVE_QUOTA(mp, tp, ud, gd, nb, ni, f) \
	XFS_TRANS_RESERVE_QUOTA_BYDQUOTS(mp, tp, ud, gd, -(nb), -(ni), \
				f | XFS_QMOPT_RES_REGBLKS)

extern int xfs_qm_dqcheck(xfs_disk_dquot_t *, xfs_dqid_t, uint, uint, char *);

extern struct bhv_vfsops xfs_qmops;

extern void xfs_qm_init(void);
extern void xfs_qm_exit(void);

#endif	/* __KERNEL__ */

#endif	/* __XFS_QUOTA_H__ */
Commit	Line	Data
2bd0ea18	1	/*
eae766ca	2	* Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
5000d01d	3	*
2bd0ea18 NS	4	* This program is free software; you can redistribute it and/or modify it
	5	* under the terms of version 2 of the GNU General Public License as
	6	* published by the Free Software Foundation.
5000d01d	7	*
2bd0ea18 NS	8	* This program is distributed in the hope that it would be useful, but
	9	* WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
5000d01d	11	*
2bd0ea18 NS	12	* Further, this software is distributed without any warranty that it is
2bd0ea18 NS	13	* free of the rightful claim of any third person regarding infringement
5000d01d	14	* or the like. Any license provided herein, whether implied or
2bd0ea18 NS	15	* otherwise, applies only to this software file. Patent licenses, if
	16	* any, provided herein do not apply to combinations of this program with
	17	* other software, or any other product whatsoever.
5000d01d	18	*
2bd0ea18 NS	19	* You should have received a copy of the GNU General Public License along
	20	* with this program; if not, write the Free Software Foundation, Inc., 59
	21	* Temple Place - Suite 330, Boston MA 02111-1307, USA.
5000d01d	22	*
2bd0ea18 NS	23	* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
2bd0ea18 NS	24	* Mountain View, CA 94043, or:
5000d01d SL	25	*
	26	* http://www.sgi.com
	27	*
	28	* For further information regarding this notice, see:
	29	*
2bd0ea18 NS	30	* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
	31	*/
	32	#ifndef __XFS_QUOTA_H__
	33	#define __XFS_QUOTA_H__
	34
eae766ca NS	35	/*
	36	* The ondisk form of a dquot structure.
	37	*/
	38	#define XFS_DQUOT_MAGIC 0x4451 /* 'DQ' */
	39	#define XFS_DQUOT_VERSION (u_int8_t)0x01 /* latest version number */
	40
5000d01d	41	/*
b36eef04 NS	42	* uid_t and gid_t are hard-coded to 32 bits in the inode.
b36eef04 NS	43	* Hence, an 'id' in a dquot is 32 bits..
2bd0ea18 NS	44	*/
2bd0ea18 NS	45	typedef __int32_t xfs_dqid_t;
b36eef04	46
2bd0ea18	47	/*
5000d01d	48	* Eventhough users may not have quota limits occupying all 64-bits,
2bd0ea18	49	* they may need 64-bit accounting. Hence, 64-bit quota-counters,
b36eef04	50	* and quota-limits. This is a waste in the common case, but hey ...
2bd0ea18 NS	51	*/
2bd0ea18 NS	52	typedef __uint64_t xfs_qcnt_t;
5000d01d	53	typedef __uint16_t xfs_qwarncnt_t;
2bd0ea18	54
eae766ca NS	55	/*
	56	* This is the main portion of the on-disk representation of quota
	57	* information for a user. This is the q_core of the xfs_dquot_t that
	58	* is kept in kernel memory. We pad this with some more expansion room
	59	* to construct the on disk structure.
	60	*/
	61	typedef struct xfs_disk_dquot {
	62	/16/ u_int16_t d_magic; /* dquot magic = XFS_DQUOT_MAGIC */
	63	/8 / u_int8_t d_version; /* dquot version */
	64	/8 / u_int8_t d_flags; /* XFS_DQ_USER/PROJ/GROUP */
	65	/32/ xfs_dqid_t d_id; /* user,project,group id */
	66	/64/ xfs_qcnt_t d_blk_hardlimit;/* absolute limit on disk blks */
	67	/64/ xfs_qcnt_t d_blk_softlimit;/* preferred limit on disk blks */
	68	/64/ xfs_qcnt_t d_ino_hardlimit;/* maximum # allocated inodes */
	69	/64/ xfs_qcnt_t d_ino_softlimit;/* preferred inode limit */
	70	/64/ xfs_qcnt_t d_bcount; /* disk blocks owned by the user */
	71	/64/ xfs_qcnt_t d_icount; /* inodes owned by the user */
	72	/32/ __int32_t d_itimer; /* zero if within inode limits if not,
	73	this is when we refuse service */
	74	/32/ __int32_t d_btimer; /* similar to above; for disk blocks */
	75	/16/ xfs_qwarncnt_t d_iwarns; /* warnings issued wrt num inodes */
	76	/16/ xfs_qwarncnt_t d_bwarns; /* warnings issued wrt disk blocks */
	77	/32/ __int32_t d_pad0; /* 64 bit align */
	78	/64/ xfs_qcnt_t d_rtb_hardlimit;/* absolute limit on realtime blks */
	79	/64/ xfs_qcnt_t d_rtb_softlimit;/* preferred limit on RT disk blks */
	80	/64/ xfs_qcnt_t d_rtbcount; /* realtime blocks owned */
	81	/32/ __int32_t d_rtbtimer; /* similar to above; for RT disk blocks */
	82	/16/ xfs_qwarncnt_t d_rtbwarns; /* warnings issued wrt RT disk blocks */
	83	/16/ __uint16_t d_pad;
	84	} xfs_disk_dquot_t;
	85
	86	/*
	87	* This is what goes on disk. This is separated from the xfs_disk_dquot because
	88	* carrying the unnecessary padding would be a waste of memory.
	89	*/
	90	typedef struct xfs_dqblk {
	91	xfs_disk_dquot_t dd_diskdq; /* portion that lives incore as well */
	92	char dd_fill[32]; /* filling for posterity */
	93	} xfs_dqblk_t;
	94
	95	/*
	96	* flags for q_flags field in the dquot.
	97	*/
	98	#define XFS_DQ_USER 0x0001 /* a user quota */
	99	/* #define XFS_DQ_PROJ 0x0002 -- project quota (IRIX) */
	100	#define XFS_DQ_GROUP 0x0004 /* a group quota */
	101	#define XFS_DQ_FLOCKED 0x0008 /* flush lock taken */
	102	#define XFS_DQ_DIRTY 0x0010 /* dquot is dirty */
	103	#define XFS_DQ_WANT 0x0020 /* for lookup/reclaim race */
	104	#define XFS_DQ_INACTIVE 0x0040 /* dq off mplist & hashlist */
	105	#define XFS_DQ_MARKER 0x0080 /* sentinel */
	106
	107	/*
	108	* In the worst case, when both user and group quotas are on,
	109	* we can have a max of three dquots changing in a single transaction.
	110	*/
	111	#define XFS_DQUOT_LOGRES(mp) (sizeof(xfs_disk_dquot_t) * 3)
	112
	113
	114	/*
	115	* These are the structures used to lay out dquots and quotaoff
	116	* records on the log. Quite similar to those of inodes.
	117	*/
	118
119	/*
120	* log format struct for dquots.
121	* The first two fields must be the type and size fitting into
122	* 32 bits : log_recovery code assumes that.
123	*/
124	typedef struct xfs_dq_logformat {
125	__uint16_t qlf_type; /* dquot log item type */
126	__uint16_t qlf_size; /* size of this item */
127	xfs_dqid_t qlf_id; /* usr/grp id number : 32 bits */
128	__int64_t qlf_blkno; /* blkno of dquot buffer */
129	__int32_t qlf_len; /* len of dquot buffer */
130	__uint32_t qlf_boffset; /* off of dquot in buffer */
131	} xfs_dq_logformat_t;
132
133	/*
134	* log format struct for QUOTAOFF records.
135	* The first two fields must be the type and size fitting into
136	* 32 bits : log_recovery code assumes that.
137	* We write two LI_QUOTAOFF logitems per quotaoff, the last one keeps a pointer
138	* to the first and ensures that the first logitem is taken out of the AIL
139	* only when the last one is securely committed.
140	*/
141	typedef struct xfs_qoff_logformat {
142	unsigned short qf_type; /* quotaoff log item type */
143	unsigned short qf_size; /* size of this item */
144	unsigned int qf_flags; /* USR and/or GRP */
145	char qf_pad[12]; /* padding for future */
146	} xfs_qoff_logformat_t;
147
148
5000d01d	149	/*
2bd0ea18 NS	150	* Disk quotas status in m_qflags, and also sb_qflags. 16 bits.
2bd0ea18 NS	151	*/
5000d01d SL	152	#define XFS_UQUOTA_ACCT 0x0001 /* user quota accounting ON */
	153	#define XFS_UQUOTA_ENFD 0x0002 /* user quota limits enforced */
	154	#define XFS_UQUOTA_CHKD 0x0004 /* quotacheck run on usr quotas */
	155	#define XFS_PQUOTA_ACCT 0x0008 /* (IRIX) project quota accounting ON */
	156	#define XFS_GQUOTA_ENFD 0x0010 /* group quota limits enforced */
	157	#define XFS_GQUOTA_CHKD 0x0020 /* quotacheck run on grp quotas */
	158	#define XFS_GQUOTA_ACCT 0x0040 /* group quota accounting ON */
	159
	160	/*
2bd0ea18 NS	161	* Incore only flags for quotaoff - these bits get cleared when quota(s)
	162	* are in the process of getting turned off. These flags are in m_qflags but
	163	* never in sb_qflags.
	164	*/
5000d01d SL	165	#define XFS_UQUOTA_ACTIVE 0x0080 /* uquotas are being turned off */
5000d01d SL	166	#define XFS_GQUOTA_ACTIVE 0x0100 /* gquotas are being turned off */
2bd0ea18	167
2bd0ea18 NS	168	/*
	169	* Checking XFS_IS_*QUOTA_ON() while holding any inode lock guarantees
	170	* quota will be not be switched off as long as that inode lock is held.
	171	*/
5000d01d	172	#define XFS_IS_QUOTA_ON(mp) ((mp)->m_qflags & (XFS_UQUOTA_ACTIVE \| \
b36eef04	173	XFS_GQUOTA_ACTIVE))
2bd0ea18	174	#define XFS_IS_UQUOTA_ON(mp) ((mp)->m_qflags & XFS_UQUOTA_ACTIVE)
5000d01d	175	#define XFS_IS_GQUOTA_ON(mp) ((mp)->m_qflags & XFS_GQUOTA_ACTIVE)
2bd0ea18 NS	176
	177	/*
	178	* Flags to tell various functions what to do. Not all of these are meaningful
	179	* to a single function. None of these XFS_QMOPT_* flags are meant to have
	180	* persistent values (ie. their values can and will change between versions)
	181	*/
	182	#define XFS_QMOPT_DQLOCK 0x0000001 /* dqlock */
	183	#define XFS_QMOPT_DQALLOC 0x0000002 /* alloc dquot ondisk if needed */
	184	#define XFS_QMOPT_UQUOTA 0x0000004 /* user dquot requested */
b36eef04	185	#define XFS_QMOPT_GQUOTA 0x0000008 /* group dquot requested */
2bd0ea18 NS	186	#define XFS_QMOPT_FORCE_RES 0x0000010 /* ignore quota limits */
	187	#define XFS_QMOPT_DQSUSER 0x0000020 /* don't cache super users dquot */
	188	#define XFS_QMOPT_SBVERSION 0x0000040 /* change superblock version num */
	189	#define XFS_QMOPT_QUOTAOFF 0x0000080 /* quotas are being turned off */
	190	#define XFS_QMOPT_UMOUNTING 0x0000100 /* filesys is being unmounted */
	191	#define XFS_QMOPT_DOLOG 0x0000200 /* log buf changes (in quotacheck) */
5000d01d	192	#define XFS_QMOPT_DOWARN 0x0000400 /* increase warning cnt if necessary */
2bd0ea18 NS	193	#define XFS_QMOPT_ILOCKED 0x0000800 /* inode is already locked (excl) */
	194	#define XFS_QMOPT_DQREPAIR 0x0001000 /* repair dquot, if damaged. */
	195
5000d01d	196	/*
2bd0ea18 NS	197	* flags to xfs_trans_mod_dquot to indicate which field needs to be
	198	* modified.
	199	*/
5000d01d	200	#define XFS_QMOPT_RES_REGBLKS 0x0010000
2bd0ea18 NS	201	#define XFS_QMOPT_RES_RTBLKS 0x0020000
	202	#define XFS_QMOPT_BCOUNT 0x0040000
	203	#define XFS_QMOPT_ICOUNT 0x0080000
	204	#define XFS_QMOPT_RTBCOUNT 0x0100000
	205	#define XFS_QMOPT_DELBCOUNT 0x0200000
	206	#define XFS_QMOPT_DELRTBCOUNT 0x0400000
	207	#define XFS_QMOPT_RES_INOS 0x0800000
	208
	209	/*
	210	* flags for dqflush and dqflush_all.
	211	*/
	212	#define XFS_QMOPT_SYNC 0x1000000
	213	#define XFS_QMOPT_ASYNC 0x2000000
	214	#define XFS_QMOPT_DELWRI 0x4000000
	215
7e039a24 NS	216	/*
	217	* flags for dqalloc.
	218	*/
	219	#define XFS_QMOPT_INHERIT 0x8000000
	220
5000d01d	221	/*
2bd0ea18 NS	222	* flags to xfs_trans_mod_dquot.
	223	*/
	224	#define XFS_TRANS_DQ_RES_BLKS XFS_QMOPT_RES_REGBLKS
5000d01d	225	#define XFS_TRANS_DQ_RES_RTBLKS XFS_QMOPT_RES_RTBLKS
2bd0ea18 NS	226	#define XFS_TRANS_DQ_RES_INOS XFS_QMOPT_RES_INOS
	227	#define XFS_TRANS_DQ_BCOUNT XFS_QMOPT_BCOUNT
	228	#define XFS_TRANS_DQ_DELBCOUNT XFS_QMOPT_DELBCOUNT
	229	#define XFS_TRANS_DQ_ICOUNT XFS_QMOPT_ICOUNT
	230	#define XFS_TRANS_DQ_RTBCOUNT XFS_QMOPT_RTBCOUNT
	231	#define XFS_TRANS_DQ_DELRTBCOUNT XFS_QMOPT_DELRTBCOUNT
	232
	233
b36eef04	234	#define XFS_QMOPT_QUOTALL (XFS_QMOPT_UQUOTA\|XFS_QMOPT_GQUOTA)
2bd0ea18 NS	235	#define XFS_QMOPT_RESBLK_MASK (XFS_QMOPT_RES_REGBLKS \| XFS_QMOPT_RES_RTBLKS)
2bd0ea18 NS	236
eae766ca	237	#ifdef __KERNEL__
2bd0ea18 NS	238	/*
	239	* This check is done typically without holding the inode lock;
	240	* that may seem racey, but it is harmless in the context that it is used.
5000d01d	241	* The inode cannot go inactive as long a reference is kept, and
2bd0ea18 NS	242	* therefore if dquot(s) were attached, they'll stay consistent.
2bd0ea18 NS	243	* If, for example, the ownership of the inode changes while
eae766ca	244	* we didn't have the inode locked, the appropriate dquot(s) will be
2bd0ea18 NS	245	* attached atomically.
	246	*/
	247	#define XFS_NOT_DQATTACHED(mp, ip) ((XFS_IS_UQUOTA_ON(mp) &&\
	248	(ip)->i_udquot == NULL) \|\| \
b36eef04 NS	249	(XFS_IS_GQUOTA_ON(mp) && \
b36eef04 NS	250	(ip)->i_gdquot == NULL))
2bd0ea18 NS	251
	252	#define XFS_QM_NEED_QUOTACHECK(mp) ((XFS_IS_UQUOTA_ON(mp) && \
	253	(mp->m_sb.sb_qflags & \
	254	XFS_UQUOTA_CHKD) == 0) \|\| \
b36eef04	255	(XFS_IS_GQUOTA_ON(mp) && \
2bd0ea18	256	(mp->m_sb.sb_qflags & \
b36eef04	257	XFS_GQUOTA_CHKD) == 0))
2bd0ea18 NS	258
2bd0ea18 NS	259	#define XFS_MOUNT_QUOTA_ALL (XFS_UQUOTA_ACCT\|XFS_UQUOTA_ENFD\|\
b36eef04 NS	260	XFS_UQUOTA_CHKD\|XFS_GQUOTA_ACCT\|\
b36eef04 NS	261	XFS_GQUOTA_ENFD\|XFS_GQUOTA_CHKD)
2bd0ea18	262	#define XFS_MOUNT_QUOTA_MASK (XFS_MOUNT_QUOTA_ALL \| XFS_UQUOTA_ACTIVE \| \
b36eef04	263	XFS_GQUOTA_ACTIVE)
2bd0ea18	264
2bd0ea18	265
2bd0ea18	266	/*
eae766ca NS	267	* The structure kept inside the xfs_trans_t keep track of dquot changes
eae766ca NS	268	* within a transaction and apply them later.
2bd0ea18	269	*/
eae766ca NS	270	typedef struct xfs_dqtrx {
	271	struct xfs_dquot qt_dquot; / the dquot this refers to */
	272	ulong qt_blk_res; /* blks reserved on a dquot */
	273	ulong qt_blk_res_used; /* blks used from the reservation */
	274	ulong qt_ino_res; /* inode reserved on a dquot */
	275	ulong qt_ino_res_used; /* inodes used from the reservation */
	276	long qt_bcount_delta; /* dquot blk count changes */
	277	long qt_delbcnt_delta; /* delayed dquot blk count changes */
	278	long qt_icount_delta; /* dquot inode count changes */
	279	ulong qt_rtblk_res; /* # blks reserved on a dquot */
	280	ulong qt_rtblk_res_used;/* # blks used from reservation */
	281	long qt_rtbcount_delta;/* dquot realtime blk changes */
	282	long qt_delrtb_delta; /* delayed RT blk count changes */
	283	} xfs_dqtrx_t;
2bd0ea18 NS	284
2bd0ea18 NS	285	/*
eae766ca	286	* Dquot transaction functions, used if quota is enabled.
2bd0ea18	287	*/
eae766ca NS	288	typedef void (qo_dup_dqinfo_t)(struct xfs_trans , struct xfs_trans *);
	289	typedef void (qo_mod_dquot_byino_t)(struct xfs_trans ,
	290	struct xfs_inode *, uint, long);
	291	typedef void (qo_free_dqinfo_t)(struct xfs_trans );
	292	typedef void (qo_apply_dquot_deltas_t)(struct xfs_trans );
	293	typedef void (qo_unreserve_and_mod_dquots_t)(struct xfs_trans );
	294	typedef int (*qo_reserve_quota_nblks_t)(
	295	struct xfs_trans , struct xfs_mount ,
	296	struct xfs_inode *, long, long, uint);
	297	typedef int (*qo_reserve_quota_bydquots_t)(
	298	struct xfs_trans , struct xfs_mount ,
	299	struct xfs_dquot , struct xfs_dquot ,
	300	long, long, uint);
	301	typedef struct xfs_dqtrxops {
	302	qo_dup_dqinfo_t qo_dup_dqinfo;
	303	qo_free_dqinfo_t qo_free_dqinfo;
	304	qo_mod_dquot_byino_t qo_mod_dquot_byino;
	305	qo_apply_dquot_deltas_t qo_apply_dquot_deltas;
	306	qo_reserve_quota_nblks_t qo_reserve_quota_nblks;
	307	qo_reserve_quota_bydquots_t qo_reserve_quota_bydquots;
	308	qo_unreserve_and_mod_dquots_t qo_unreserve_and_mod_dquots;
	309	} xfs_dqtrxops_t;
	310
	311	#define XFS_DQTRXOP(mp, tp, op, args...) \
	312	((mp)->m_qm_ops.xfs_dqtrxops ? \
	313	((mp)->m_qm_ops.xfs_dqtrxops->op)(tp, ## args) : 0)
	314
	315	#define XFS_TRANS_DUP_DQINFO(mp, otp, ntp) \
	316	XFS_DQTRXOP(mp, otp, qo_dup_dqinfo, ntp)
	317	#define XFS_TRANS_FREE_DQINFO(mp, tp) \
	318	XFS_DQTRXOP(mp, tp, qo_free_dqinfo)
	319	#define XFS_TRANS_MOD_DQUOT_BYINO(mp, tp, ip, field, delta) \
	320	XFS_DQTRXOP(mp, tp, qo_mod_dquot_byino, ip, field, delta)
	321	#define XFS_TRANS_APPLY_DQUOT_DELTAS(mp, tp) \
	322	XFS_DQTRXOP(mp, tp, qo_apply_dquot_deltas)
	323	#define XFS_TRANS_RESERVE_QUOTA_NBLKS(mp, tp, ip, nblks, ninos, fl) \
	324	XFS_DQTRXOP(mp, tp, qo_reserve_quota_nblks, mp, ip, nblks, ninos, fl)
	325	#define XFS_TRANS_RESERVE_QUOTA_BYDQUOTS(mp, tp, ud, gd, nb, ni, fl) \
	326	XFS_DQTRXOP(mp, tp, qo_reserve_quota_bydquots, mp, ud, gd, nb, ni, fl)
	327	#define XFS_TRANS_UNRESERVE_AND_MOD_DQUOTS(mp, tp) \
	328	XFS_DQTRXOP(mp, tp, qo_unreserve_and_mod_dquots)
	329
	330	#define XFS_TRANS_RESERVE_BLKQUOTA(mp, tp, ip, nblks) \
	331	XFS_TRANS_RESERVE_QUOTA_NBLKS(mp, tp, ip, nblks, 0, \
	332	XFS_QMOPT_RES_REGBLKS)
	333	#define XFS_TRANS_RESERVE_BLKQUOTA_FORCE(mp, tp, ip, nblks) \
	334	XFS_TRANS_RESERVE_QUOTA_NBLKS(mp, tp, ip, nblks, 0, \
	335	XFS_QMOPT_RES_REGBLKS \| XFS_QMOPT_FORCE_RES)
	336	#define XFS_TRANS_UNRESERVE_BLKQUOTA(mp, tp, ip, nblks) \
	337	XFS_TRANS_RESERVE_QUOTA_NBLKS(mp, tp, ip, -(nblks), 0, \
	338	XFS_QMOPT_RES_REGBLKS)
	339	#define XFS_TRANS_RESERVE_QUOTA(mp, tp, ud, gd, nb, ni, f) \
	340	XFS_TRANS_RESERVE_QUOTA_BYDQUOTS(mp, tp, ud, gd, nb, ni, \
	341	f \| XFS_QMOPT_RES_REGBLKS)
	342	#define XFS_TRANS_UNRESERVE_QUOTA(mp, tp, ud, gd, nb, ni, f) \
	343	XFS_TRANS_RESERVE_QUOTA_BYDQUOTS(mp, tp, ud, gd, -(nb), -(ni), \
	344	f \| XFS_QMOPT_RES_REGBLKS)
	345
	346	extern int xfs_qm_dqcheck(xfs_disk_dquot_t , xfs_dqid_t, uint, uint, char );
	347
	348	extern struct bhv_vfsops xfs_qmops;
	349
	350	extern void xfs_qm_init(void);
	351	extern void xfs_qm_exit(void);
e49e365f	352
2bd0ea18 NS	353	#endif /* __KERNEL__ */
	354
	355	#endif /* __XFS_QUOTA_H__ */