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

/*
 * Copyright (c) 2000 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__

/* 
 * 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;

/* 
 * 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 */

/*
 * Typically, we turn quotas off if we weren't explicitly asked to 
 * mount quotas. This is the mount option not to do that.
 * This option is handy in the miniroot, when trying to mount /root.
 * We can't really know what's in /etc/fstab until /root is already mounted!
 * This stops quotas getting turned off in the root filesystem everytime
 * the system boots up a miniroot.
 */
#define XFS_QUOTA_MAYBE		0x0200 /* Turn quotas on if SB has quotas on */

/*
 * 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)

/*
 * 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 didnt 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)

#define XFS_IS_REALTIME_INODE(ip) ((ip)->i_d.di_flags & XFS_DIFLAG_REALTIME)


#ifdef __KERNEL__
/*
 * External Interface to the XFS disk quota subsystem.
 */
struct	bhv_desc;
struct  vfs;
struct  xfs_disk_dquot;
struct  xfs_dqhash;
struct  xfs_dquot;
struct  xfs_inode;
struct  xfs_mount;
struct  xfs_trans;

/*
 * Quota Manager Interface.
 */
extern struct xfs_qm   *xfs_qm_init(void);
extern void 		xfs_qm_destroy(struct xfs_qm *);
extern int		xfs_qm_dqflush_all(struct xfs_mount *, int);
extern int		xfs_qm_dqattach(struct xfs_inode *, uint);
extern int		xfs_qm_dqpurge_all(struct xfs_mount *, uint);
extern void		xfs_qm_mount_quotainit(struct xfs_mount *, uint);
extern void		xfs_qm_unmount_quotadestroy(struct xfs_mount *);
extern int		xfs_qm_mount_quotas(struct xfs_mount *);
extern int 		xfs_qm_unmount_quotas(struct xfs_mount *);
extern void		xfs_qm_dqdettach_inode(struct xfs_inode *);
extern int 		xfs_qm_sync(struct xfs_mount *, short);


/*
 * system call interface
 */
extern int		xfs_quotactl(xfs_mount_t *, struct vfs *, int, int,
				     int, xfs_caddr_t);

/*
 * dquot interface.
 */
extern void		xfs_dqlock(struct xfs_dquot *);
extern void		xfs_dqunlock(struct xfs_dquot *);
extern void		xfs_dqunlock_nonotify(struct xfs_dquot *);
extern void		xfs_dqlock2(struct xfs_dquot *, struct xfs_dquot *);
extern void 		xfs_qm_dqput(struct xfs_dquot *);
extern void 		xfs_qm_dqrele(struct xfs_dquot *);
extern xfs_dqid_t	xfs_qm_dqid(struct xfs_dquot *);
extern int		xfs_qm_dqget(struct xfs_mount *, 
				     struct xfs_inode *, xfs_dqid_t,
				      uint, uint, struct xfs_dquot **);
extern int 		xfs_qm_dqcheck(struct xfs_disk_dquot *, 
				       xfs_dqid_t, uint, uint, char *);

/*
 * Vnodeops specific code that should actually be _in_ xfs_vnodeops.c, but
 * is here because it's nicer to keep vnodeops (therefore, XFS) lean 
 * and clean.
 */
extern struct xfs_dquot *	xfs_qm_vop_chown(struct xfs_trans *, 
						 struct xfs_inode *, 
						 struct xfs_dquot **,
						 struct xfs_dquot *);
extern int		xfs_qm_vop_dqalloc(struct xfs_mount *,
					   struct xfs_inode *,
					   uid_t, gid_t, uint,
					   struct xfs_dquot	**,
					   struct xfs_dquot	**);

extern int		xfs_qm_vop_chown_dqalloc(struct xfs_mount *,
						 struct xfs_inode *,
						 int, uid_t, gid_t,
						 struct xfs_dquot **,
						 struct xfs_dquot **);

extern int		xfs_qm_vop_chown_reserve(struct xfs_trans *,
						 struct xfs_inode *,
						 struct xfs_dquot *,
						 struct xfs_dquot *,
						 uint);

extern int		xfs_qm_vop_rename_dqattach(struct xfs_inode **);
extern void		xfs_qm_vop_dqattach_and_dqmod_newinode(
						struct xfs_trans *,
						struct xfs_inode *,
						struct xfs_dquot *,	
						struct xfs_dquot *);


/*
 * Dquot Transaction interface
 */
extern void 		xfs_trans_alloc_dqinfo(struct xfs_trans *);
extern void 		xfs_trans_free_dqinfo(struct xfs_trans *);
extern void		xfs_trans_dup_dqinfo(struct xfs_trans *, 
					     struct xfs_trans *);
extern void		xfs_trans_mod_dquot(struct xfs_trans *, 
					    struct xfs_dquot *,
					    uint, long);
extern int		xfs_trans_mod_dquot_byino(struct xfs_trans *, 
						  struct xfs_inode *,
						  uint, long);
extern void		xfs_trans_apply_dquot_deltas(struct xfs_trans *);
extern void		xfs_trans_unreserve_and_mod_dquots(struct xfs_trans *);

extern int		xfs_trans_reserve_quota_nblks(struct xfs_trans *,
						      struct xfs_inode *,
						      long, long, uint);


extern int		xfs_trans_reserve_quota_bydquots(struct xfs_trans *,
							 struct xfs_dquot *,
							 struct xfs_dquot *,
							 long, long, uint);
extern void		xfs_trans_log_dquot(struct xfs_trans *,
					    struct xfs_dquot *);
extern void		xfs_trans_dqjoin(struct xfs_trans *,
					 struct xfs_dquot *);
extern void		xfs_qm_dqrele_all_inodes(struct xfs_mount *, uint);

/* 
 * Regular disk block quota reservations 
 */
#define 	xfs_trans_reserve_blkquota(tp, ip, nblks) \
xfs_trans_reserve_quota_nblks(tp, ip, nblks, 0, XFS_QMOPT_RES_REGBLKS)

#define		xfs_trans_reserve_blkquota_force(tp, ip, nblks) \
xfs_trans_reserve_quota_nblks(tp, ip, nblks, 0, \
		XFS_QMOPT_RES_REGBLKS|XFS_QMOPT_FORCE_RES)

#define 	xfs_trans_unreserve_blkquota(tp, ip, nblks) \
xfs_trans_reserve_quota_nblks(tp, ip, -(nblks), 0, XFS_QMOPT_RES_REGBLKS)

#define 	xfs_trans_reserve_quota(tp, udq, gdq, nb, ni, f) \
xfs_trans_reserve_quota_bydquots(tp, udq, gdq, nb, ni, f|XFS_QMOPT_RES_REGBLKS) 

#define 	xfs_trans_unreserve_quota(tp, ud, gd, b, i, f) \
xfs_trans_reserve_quota_bydquots(tp, ud, gd, -(b), -(i), f|XFS_QMOPT_RES_REGBLKS)

/*
 * Realtime disk block quota reservations 
 */
#define 	xfs_trans_reserve_rtblkquota(mp, tp, ip, nblks) \
xfs_trans_reserve_quota_nblks(tp, ip, nblks, 0, XFS_QMOPT_RES_RTBLKS)
						  
#define 	xfs_trans_unreserve_rtblkquota(tp, ip, nblks) \
xfs_trans_reserve_quota_nblks(tp, ip, -(nblks), 0, XFS_QMOPT_RES_RTBLKS)

#define 	xfs_trans_reserve_rtquota(mp, tp, uq, pq, blks, f) \
xfs_trans_reserve_quota_bydquots(mp, tp, uq, pq, blks, 0, f|XFS_QMOPT_RES_RTBLKS) 

#define 	xfs_trans_unreserve_rtquota(tp, uq, pq, blks) \
xfs_trans_reserve_quota_bydquots(tp, uq, pq, -(blks), XFS_QMOPT_RES_RTBLKS)

#endif	/* __KERNEL__ */

#endif	/* __XFS_QUOTA_H__ */
Commit	Line	Data
2bd0ea18	1	/*
9911e5dc	2	* Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
2bd0ea18 NS	3	*
	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.
	7	*
	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.
	11	*
	12	* Further, this software is distributed without any warranty that it is
	13	* free of the rightful claim of any third person regarding infringement
	14	* or the like. Any license provided herein, whether implied or
	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.
	18	*
	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.
	22	*
	23	* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
	24	* Mountain View, CA 94043, or:
	25	*
	26	* http://www.sgi.com
	27	*
	28	* For further information regarding this notice, see:
	29	*
	30	* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
	31	*/
	32	#ifndef __XFS_QUOTA_H__
	33	#define __XFS_QUOTA_H__
	34
	35	/*
b36eef04 NS	36	* uid_t and gid_t are hard-coded to 32 bits in the inode.
b36eef04 NS	37	* Hence, an 'id' in a dquot is 32 bits..
2bd0ea18 NS	38	*/
2bd0ea18 NS	39	typedef __int32_t xfs_dqid_t;
b36eef04	40
2bd0ea18 NS	41	/*
	42	* Eventhough users may not have quota limits occupying all 64-bits,
	43	* they may need 64-bit accounting. Hence, 64-bit quota-counters,
b36eef04	44	* and quota-limits. This is a waste in the common case, but hey ...
2bd0ea18 NS	45	*/
	46	typedef __uint64_t xfs_qcnt_t;
	47	typedef __uint16_t xfs_qwarncnt_t;
	48
	49	/*
	50	* Disk quotas status in m_qflags, and also sb_qflags. 16 bits.
	51	*/
	52	#define XFS_UQUOTA_ACCT 0x0001 /* user quota accounting ON */
	53	#define XFS_UQUOTA_ENFD 0x0002 /* user quota limits enforced */
	54	#define XFS_UQUOTA_CHKD 0x0004 /* quotacheck run on usr quotas */
b36eef04 NS	55	#define XFS_PQUOTA_ACCT 0x0008 /* (IRIX) project quota accounting ON */
	56	#define XFS_GQUOTA_ENFD 0x0010 /* group quota limits enforced */
	57	#define XFS_GQUOTA_CHKD 0x0020 /* quotacheck run on grp quotas */
	58	#define XFS_GQUOTA_ACCT 0x0040 /* group quota accounting ON */
2bd0ea18 NS	59
	60	/*
	61	* Incore only flags for quotaoff - these bits get cleared when quota(s)
	62	* are in the process of getting turned off. These flags are in m_qflags but
	63	* never in sb_qflags.
	64	*/
b36eef04 NS	65	#define XFS_UQUOTA_ACTIVE 0x0080 /* uquotas are being turned off */
b36eef04 NS	66	#define XFS_GQUOTA_ACTIVE 0x0100 /* gquotas are being turned off */
2bd0ea18 NS	67
	68	/*
	69	* Typically, we turn quotas off if we weren't explicitly asked to
	70	* mount quotas. This is the mount option not to do that.
	71	* This option is handy in the miniroot, when trying to mount /root.
	72	* We can't really know what's in /etc/fstab until /root is already mounted!
	73	* This stops quotas getting turned off in the root filesystem everytime
	74	* the system boots up a miniroot.
	75	*/
b36eef04	76	#define XFS_QUOTA_MAYBE 0x0200 /* Turn quotas on if SB has quotas on */
2bd0ea18 NS	77
	78	/*
	79	* Checking XFS_IS_*QUOTA_ON() while holding any inode lock guarantees
	80	* quota will be not be switched off as long as that inode lock is held.
	81	*/
	82	#define XFS_IS_QUOTA_ON(mp) ((mp)->m_qflags & (XFS_UQUOTA_ACTIVE \| \
b36eef04	83	XFS_GQUOTA_ACTIVE))
2bd0ea18	84	#define XFS_IS_UQUOTA_ON(mp) ((mp)->m_qflags & XFS_UQUOTA_ACTIVE)
b36eef04	85	#define XFS_IS_GQUOTA_ON(mp) ((mp)->m_qflags & XFS_GQUOTA_ACTIVE)
2bd0ea18 NS	86
	87	/*
	88	* Flags to tell various functions what to do. Not all of these are meaningful
	89	* to a single function. None of these XFS_QMOPT_* flags are meant to have
	90	* persistent values (ie. their values can and will change between versions)
	91	*/
	92	#define XFS_QMOPT_DQLOCK 0x0000001 /* dqlock */
	93	#define XFS_QMOPT_DQALLOC 0x0000002 /* alloc dquot ondisk if needed */
	94	#define XFS_QMOPT_UQUOTA 0x0000004 /* user dquot requested */
b36eef04	95	#define XFS_QMOPT_GQUOTA 0x0000008 /* group dquot requested */
2bd0ea18 NS	96	#define XFS_QMOPT_FORCE_RES 0x0000010 /* ignore quota limits */
	97	#define XFS_QMOPT_DQSUSER 0x0000020 /* don't cache super users dquot */
	98	#define XFS_QMOPT_SBVERSION 0x0000040 /* change superblock version num */
	99	#define XFS_QMOPT_QUOTAOFF 0x0000080 /* quotas are being turned off */
	100	#define XFS_QMOPT_UMOUNTING 0x0000100 /* filesys is being unmounted */
	101	#define XFS_QMOPT_DOLOG 0x0000200 /* log buf changes (in quotacheck) */
	102	#define XFS_QMOPT_DOWARN 0x0000400 /* increase warning cnt if necessary */
	103	#define XFS_QMOPT_ILOCKED 0x0000800 /* inode is already locked (excl) */
	104	#define XFS_QMOPT_DQREPAIR 0x0001000 /* repair dquot, if damaged. */
	105
	106	/*
	107	* flags to xfs_trans_mod_dquot to indicate which field needs to be
	108	* modified.
	109	*/
	110	#define XFS_QMOPT_RES_REGBLKS 0x0010000
	111	#define XFS_QMOPT_RES_RTBLKS 0x0020000
	112	#define XFS_QMOPT_BCOUNT 0x0040000
	113	#define XFS_QMOPT_ICOUNT 0x0080000
	114	#define XFS_QMOPT_RTBCOUNT 0x0100000
	115	#define XFS_QMOPT_DELBCOUNT 0x0200000
	116	#define XFS_QMOPT_DELRTBCOUNT 0x0400000
	117	#define XFS_QMOPT_RES_INOS 0x0800000
	118
	119	/*
	120	* flags for dqflush and dqflush_all.
	121	*/
	122	#define XFS_QMOPT_SYNC 0x1000000
	123	#define XFS_QMOPT_ASYNC 0x2000000
	124	#define XFS_QMOPT_DELWRI 0x4000000
	125
7e039a24 NS	126	/*
	127	* flags for dqalloc.
	128	*/
	129	#define XFS_QMOPT_INHERIT 0x8000000
	130
2bd0ea18 NS	131	/*
	132	* flags to xfs_trans_mod_dquot.
	133	*/
	134	#define XFS_TRANS_DQ_RES_BLKS XFS_QMOPT_RES_REGBLKS
	135	#define XFS_TRANS_DQ_RES_RTBLKS XFS_QMOPT_RES_RTBLKS
	136	#define XFS_TRANS_DQ_RES_INOS XFS_QMOPT_RES_INOS
	137	#define XFS_TRANS_DQ_BCOUNT XFS_QMOPT_BCOUNT
	138	#define XFS_TRANS_DQ_DELBCOUNT XFS_QMOPT_DELBCOUNT
	139	#define XFS_TRANS_DQ_ICOUNT XFS_QMOPT_ICOUNT
	140	#define XFS_TRANS_DQ_RTBCOUNT XFS_QMOPT_RTBCOUNT
	141	#define XFS_TRANS_DQ_DELRTBCOUNT XFS_QMOPT_DELRTBCOUNT
	142
	143
b36eef04	144	#define XFS_QMOPT_QUOTALL (XFS_QMOPT_UQUOTA\|XFS_QMOPT_GQUOTA)
2bd0ea18 NS	145	#define XFS_QMOPT_RESBLK_MASK (XFS_QMOPT_RES_REGBLKS \| XFS_QMOPT_RES_RTBLKS)
	146
	147	/*
	148	* This check is done typically without holding the inode lock;
	149	* that may seem racey, but it is harmless in the context that it is used.
	150	* The inode cannot go inactive as long a reference is kept, and
	151	* therefore if dquot(s) were attached, they'll stay consistent.
	152	* If, for example, the ownership of the inode changes while
	153	* we didnt have the inode locked, the appropriate dquot(s) will be
	154	* attached atomically.
	155	*/
	156	#define XFS_NOT_DQATTACHED(mp, ip) ((XFS_IS_UQUOTA_ON(mp) &&\
	157	(ip)->i_udquot == NULL) \|\| \
b36eef04 NS	158	(XFS_IS_GQUOTA_ON(mp) && \
b36eef04 NS	159	(ip)->i_gdquot == NULL))
2bd0ea18 NS	160
	161	#define XFS_QM_NEED_QUOTACHECK(mp) ((XFS_IS_UQUOTA_ON(mp) && \
	162	(mp->m_sb.sb_qflags & \
	163	XFS_UQUOTA_CHKD) == 0) \|\| \
b36eef04	164	(XFS_IS_GQUOTA_ON(mp) && \
2bd0ea18	165	(mp->m_sb.sb_qflags & \
b36eef04	166	XFS_GQUOTA_CHKD) == 0))
2bd0ea18 NS	167
2bd0ea18 NS	168	#define XFS_MOUNT_QUOTA_ALL (XFS_UQUOTA_ACCT\|XFS_UQUOTA_ENFD\|\
b36eef04 NS	169	XFS_UQUOTA_CHKD\|XFS_GQUOTA_ACCT\|\
b36eef04 NS	170	XFS_GQUOTA_ENFD\|XFS_GQUOTA_CHKD)
2bd0ea18	171	#define XFS_MOUNT_QUOTA_MASK (XFS_MOUNT_QUOTA_ALL \| XFS_UQUOTA_ACTIVE \| \
b36eef04	172	XFS_GQUOTA_ACTIVE)
2bd0ea18 NS	173
	174	#define XFS_IS_REALTIME_INODE(ip) ((ip)->i_d.di_flags & XFS_DIFLAG_REALTIME)
	175
	176
	177	#ifdef __KERNEL__
	178	/*
	179	* External Interface to the XFS disk quota subsystem.
	180	*/
	181	struct bhv_desc;
	182	struct vfs;
	183	struct xfs_disk_dquot;
	184	struct xfs_dqhash;
	185	struct xfs_dquot;
	186	struct xfs_inode;
	187	struct xfs_mount;
	188	struct xfs_trans;
	189
	190	/*
	191	* Quota Manager Interface.
	192	*/
	193	extern struct xfs_qm *xfs_qm_init(void);
	194	extern void xfs_qm_destroy(struct xfs_qm *);
	195	extern int xfs_qm_dqflush_all(struct xfs_mount *, int);
	196	extern int xfs_qm_dqattach(struct xfs_inode *, uint);
	197	extern int xfs_qm_dqpurge_all(struct xfs_mount *, uint);
	198	extern void xfs_qm_mount_quotainit(struct xfs_mount *, uint);
	199	extern void xfs_qm_unmount_quotadestroy(struct xfs_mount *);
	200	extern int xfs_qm_mount_quotas(struct xfs_mount *);
	201	extern int xfs_qm_unmount_quotas(struct xfs_mount *);
	202	extern void xfs_qm_dqdettach_inode(struct xfs_inode *);
	203	extern int xfs_qm_sync(struct xfs_mount *, short);
	204
	205
	206	/*
	207	* system call interface
	208	*/
	209	extern int xfs_quotactl(xfs_mount_t , struct vfs , int, int,
	210	int, xfs_caddr_t);
	211
	212	/*
	213	* dquot interface.
	214	*/
	215	extern void xfs_dqlock(struct xfs_dquot *);
	216	extern void xfs_dqunlock(struct xfs_dquot *);
	217	extern void xfs_dqunlock_nonotify(struct xfs_dquot *);
	218	extern void xfs_dqlock2(struct xfs_dquot , struct xfs_dquot );
	219	extern void xfs_qm_dqput(struct xfs_dquot *);
	220	extern void xfs_qm_dqrele(struct xfs_dquot *);
	221	extern xfs_dqid_t xfs_qm_dqid(struct xfs_dquot *);
	222	extern int xfs_qm_dqget(struct xfs_mount *,
	223	struct xfs_inode *, xfs_dqid_t,
	224	uint, uint, struct xfs_dquot **);
	225	extern int xfs_qm_dqcheck(struct xfs_disk_dquot *,
	226	xfs_dqid_t, uint, uint, char *);
	227
	228	/*
	229	* Vnodeops specific code that should actually be _in_ xfs_vnodeops.c, but
	230	* is here because it's nicer to keep vnodeops (therefore, XFS) lean
	231	* and clean.
	232	*/
	233	extern struct xfs_dquot * xfs_qm_vop_chown(struct xfs_trans *,
	234	struct xfs_inode *,
	235	struct xfs_dquot **,
	236	struct xfs_dquot *);
237	extern int xfs_qm_vop_dqalloc(struct xfs_mount *,
238	struct xfs_inode *,
b36eef04	239	uid_t, gid_t, uint,
2bd0ea18 NS	240	struct xfs_dquot **,
	241	struct xfs_dquot **);
	242
	243	extern int xfs_qm_vop_chown_dqalloc(struct xfs_mount *,
	244	struct xfs_inode *,
b36eef04	245	int, uid_t, gid_t,
2bd0ea18 NS	246	struct xfs_dquot **,
	247	struct xfs_dquot **);
	248
	249	extern int xfs_qm_vop_chown_reserve(struct xfs_trans *,
	250	struct xfs_inode *,
	251	struct xfs_dquot *,
	252	struct xfs_dquot *,
	253	uint);
	254
	255	extern int xfs_qm_vop_rename_dqattach(struct xfs_inode **);
	256	extern void xfs_qm_vop_dqattach_and_dqmod_newinode(
	257	struct xfs_trans *,
	258	struct xfs_inode *,
	259	struct xfs_dquot *,
	260	struct xfs_dquot *);
	261
	262
	263	/*
	264	* Dquot Transaction interface
	265	*/
	266	extern void xfs_trans_alloc_dqinfo(struct xfs_trans *);
	267	extern void xfs_trans_free_dqinfo(struct xfs_trans *);
	268	extern void xfs_trans_dup_dqinfo(struct xfs_trans *,
	269	struct xfs_trans *);
	270	extern void xfs_trans_mod_dquot(struct xfs_trans *,
	271	struct xfs_dquot *,
	272	uint, long);
	273	extern int xfs_trans_mod_dquot_byino(struct xfs_trans *,
	274	struct xfs_inode *,
	275	uint, long);
	276	extern void xfs_trans_apply_dquot_deltas(struct xfs_trans *);
	277	extern void xfs_trans_unreserve_and_mod_dquots(struct xfs_trans *);
	278
	279	extern int xfs_trans_reserve_quota_nblks(struct xfs_trans *,
	280	struct xfs_inode *,
	281	long, long, uint);
	282
	283
	284	extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *,
	285	struct xfs_dquot *,
	286	struct xfs_dquot *,
	287	long, long, uint);
	288	extern void xfs_trans_log_dquot(struct xfs_trans *,
	289	struct xfs_dquot *);
	290	extern void xfs_trans_dqjoin(struct xfs_trans *,
	291	struct xfs_dquot *);
	292	extern void xfs_qm_dqrele_all_inodes(struct xfs_mount *, uint);
	293
	294	/*
	295	* Regular disk block quota reservations
	296	*/
	297	#define xfs_trans_reserve_blkquota(tp, ip, nblks) \
	298	xfs_trans_reserve_quota_nblks(tp, ip, nblks, 0, XFS_QMOPT_RES_REGBLKS)
63be04eb NS	299
	300	#define xfs_trans_reserve_blkquota_force(tp, ip, nblks) \
	301	xfs_trans_reserve_quota_nblks(tp, ip, nblks, 0, \
	302	XFS_QMOPT_RES_REGBLKS\|XFS_QMOPT_FORCE_RES)
	303
2bd0ea18 NS	304	#define xfs_trans_unreserve_blkquota(tp, ip, nblks) \
	305	xfs_trans_reserve_quota_nblks(tp, ip, -(nblks), 0, XFS_QMOPT_RES_REGBLKS)
	306
b36eef04 NS	307	#define xfs_trans_reserve_quota(tp, udq, gdq, nb, ni, f) \
b36eef04 NS	308	xfs_trans_reserve_quota_bydquots(tp, udq, gdq, nb, ni, f\|XFS_QMOPT_RES_REGBLKS)
2bd0ea18	309
b36eef04 NS	310	#define xfs_trans_unreserve_quota(tp, ud, gd, b, i, f) \
b36eef04 NS	311	xfs_trans_reserve_quota_bydquots(tp, ud, gd, -(b), -(i), f\|XFS_QMOPT_RES_REGBLKS)
2bd0ea18 NS	312
	313	/*
	314	* Realtime disk block quota reservations
	315	*/
	316	#define xfs_trans_reserve_rtblkquota(mp, tp, ip, nblks) \
	317	xfs_trans_reserve_quota_nblks(tp, ip, nblks, 0, XFS_QMOPT_RES_RTBLKS)
	318
	319	#define xfs_trans_unreserve_rtblkquota(tp, ip, nblks) \
	320	xfs_trans_reserve_quota_nblks(tp, ip, -(nblks), 0, XFS_QMOPT_RES_RTBLKS)
	321
	322	#define xfs_trans_reserve_rtquota(mp, tp, uq, pq, blks, f) \
	323	xfs_trans_reserve_quota_bydquots(mp, tp, uq, pq, blks, 0, f\|XFS_QMOPT_RES_RTBLKS)
	324
	325	#define xfs_trans_unreserve_rtquota(tp, uq, pq, blks) \
	326	xfs_trans_reserve_quota_bydquots(tp, uq, pq, -(blks), XFS_QMOPT_RES_RTBLKS)
	327
	328	#endif /* __KERNEL__ */
	329
	330	#endif /* __XFS_QUOTA_H__ */