Commit 76456fc2 authored by Dave Chinner's avatar Dave Chinner Committed by Ben Myers
Browse files

xfs: introduce xfs_quota_defs.h 



There are a lot of quota flag definitions that are shared by user
and kernel space. Move them all to xfs_quota_defs.h so we can
unshare xfs_quota.h and remove the __KERNEL__ regions from it.

Signed-off-by: default avatarDave Chinner <dchinner@redhat.com>
Reviewed-by: default avatarBrian Foster <bfoster@redhat.com>
Reviewed-by: default avatarMark Tinguely <tinguely@sgi.com>
Signed-off-by: default avatarBen Myers <bpm@sgi.com>
parent c7298202

fs/xfs/xfs_quota.h

+3 −131
Original line number Diff line number Diff line
@@ -18,141 +18,14 @@ 
#ifndef __XFS_QUOTA_H__

#define __XFS_QUOTA_H__



struct xfs_trans;

#include "xfs_quota_defs.h"



/*

 * Even though 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 ...

 * Kernel only quota definitions and functions

 */

typedef __uint64_t	xfs_qcnt_t;

typedef __uint16_t	xfs_qwarncnt_t;



/*

 * flags for q_flags field in the dquot.

 */

#define XFS_DQ_USER		0x0001		/* a user quota */

#define XFS_DQ_PROJ		0x0002		/* project quota */

#define XFS_DQ_GROUP		0x0004		/* a group quota */

#define XFS_DQ_DIRTY		0x0008		/* dquot is dirty */

#define XFS_DQ_FREEING		0x0010		/* dquot is beeing torn down */



#define XFS_DQ_ALLTYPES		(XFS_DQ_USER|XFS_DQ_PROJ|XFS_DQ_GROUP)



#define XFS_DQ_FLAGS \

	{ XFS_DQ_USER,		"USER" }, \

	{ XFS_DQ_PROJ,		"PROJ" }, \

	{ XFS_DQ_GROUP,		"GROUP" }, \

	{ XFS_DQ_DIRTY,		"DIRTY" }, \

	{ XFS_DQ_FREEING,	"FREEING" }



/*

 * We have the possibility of all three quota types being active at once, and

 * hence free space modification requires modification of all three current

 * dquots in a single transaction. For this case we need to have a reservation

 * of at least 3 dquots.

 *

 * However, a chmod operation can change both UID and GID in a single

 * transaction, resulting in requiring {old, new} x {uid, gid} dquots to be

 * modified. Hence for this case we need to reserve space for at least 4 dquots.

 *

 * And in the worst case, there's a rename operation that can be modifying up to

 * 4 inodes with dquots attached to them. In reality, the only inodes that can

 * have their dquots modified are the source and destination directory inodes

 * due to directory name creation and removal. That can require space allocation

 * and/or freeing on both directory inodes, and hence all three dquots on each

 * inode can be modified. And if the directories are world writeable, all the

 * dquots can be unique and so 6 dquots can be modified....

 *

 * And, of course, we also need to take into account the dquot log format item

 * used to describe each dquot.

 */

#define XFS_DQUOT_LOGRES(mp)	\

	((sizeof(struct xfs_dq_logformat) + sizeof(struct xfs_disk_dquot)) * 6)



#define XFS_IS_QUOTA_RUNNING(mp)	((mp)->m_qflags & XFS_ALL_QUOTA_ACCT)

#define XFS_IS_UQUOTA_RUNNING(mp)	((mp)->m_qflags & XFS_UQUOTA_ACCT)

#define XFS_IS_PQUOTA_RUNNING(mp)	((mp)->m_qflags & XFS_PQUOTA_ACCT)

#define XFS_IS_GQUOTA_RUNNING(mp)	((mp)->m_qflags & XFS_GQUOTA_ACCT)

#define XFS_IS_UQUOTA_ENFORCED(mp)	((mp)->m_qflags & XFS_UQUOTA_ENFD)

#define XFS_IS_GQUOTA_ENFORCED(mp)	((mp)->m_qflags & XFS_GQUOTA_ENFD)

#define XFS_IS_PQUOTA_ENFORCED(mp)	((mp)->m_qflags & XFS_PQUOTA_ENFD)



/*

 * 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	0x1000  /* uquotas are being turned off */

#define XFS_GQUOTA_ACTIVE	0x2000  /* gquotas are being turned off */

#define XFS_PQUOTA_ACTIVE	0x4000  /* pquotas are being turned off */

#define XFS_ALL_QUOTA_ACTIVE	\

	(XFS_UQUOTA_ACTIVE | XFS_GQUOTA_ACTIVE | XFS_PQUOTA_ACTIVE)



/*

 * 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 | \

						   XFS_PQUOTA_ACTIVE))

#define XFS_IS_OQUOTA_ON(mp)	((mp)->m_qflags & (XFS_GQUOTA_ACTIVE | \

						   XFS_PQUOTA_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)

#define XFS_IS_PQUOTA_ON(mp)	((mp)->m_qflags & XFS_PQUOTA_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_DQALLOC	0x0000002 /* alloc dquot ondisk if needed */

#define XFS_QMOPT_UQUOTA	0x0000004 /* user dquot requested */

#define XFS_QMOPT_PQUOTA	0x0000008 /* project dquot requested */

#define XFS_QMOPT_FORCE_RES	0x0000010 /* ignore quota limits */

#define XFS_QMOPT_SBVERSION	0x0000040 /* change superblock version num */

#define XFS_QMOPT_DOWARN        0x0000400 /* increase warning cnt if needed */

#define XFS_QMOPT_DQREPAIR	0x0001000 /* repair dquot if damaged */

#define XFS_QMOPT_GQUOTA	0x0002000 /* group dquot requested */

#define XFS_QMOPT_ENOSPC	0x0004000 /* enospc instead of edquot (prj) */



/*

 * 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 dqalloc.

 */

#define XFS_QMOPT_INHERIT	0x1000000



/*

 * 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_PQUOTA | XFS_QMOPT_GQUOTA)

#define XFS_QMOPT_RESBLK_MASK	(XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_RES_RTBLKS)

struct xfs_trans;



#ifdef __KERNEL__

/*

 * This check is done typically without holding the inode lock;

 * that may seem racy, but it is harmless in the context that it is used.
@@ -289,5 +162,4 @@ extern int xfs_mount_reset_sbqflags(struct xfs_mount *); 


extern const struct xfs_buf_ops xfs_dquot_buf_ops;



#endif	/* __KERNEL__ */

#endif	/* __XFS_QUOTA_H__ */

fs/xfs/xfs_quota_defs.h

0 → 100644
+157 −0
Original line number Diff line number Diff line 
/*

 * 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_QUOTA_DEFS_H__

#define __XFS_QUOTA_DEFS_H__



/*

 * Quota definitions shared between user and kernel source trees.

 */



/*

 * Even though 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;



/*

 * flags for q_flags field in the dquot.

 */

#define XFS_DQ_USER		0x0001		/* a user quota */

#define XFS_DQ_PROJ		0x0002		/* project quota */

#define XFS_DQ_GROUP		0x0004		/* a group quota */

#define XFS_DQ_DIRTY		0x0008		/* dquot is dirty */

#define XFS_DQ_FREEING		0x0010		/* dquot is beeing torn down */



#define XFS_DQ_ALLTYPES		(XFS_DQ_USER|XFS_DQ_PROJ|XFS_DQ_GROUP)



#define XFS_DQ_FLAGS \

	{ XFS_DQ_USER,		"USER" }, \

	{ XFS_DQ_PROJ,		"PROJ" }, \

	{ XFS_DQ_GROUP,		"GROUP" }, \

	{ XFS_DQ_DIRTY,		"DIRTY" }, \

	{ XFS_DQ_FREEING,	"FREEING" }



/*

 * We have the possibility of all three quota types being active at once, and

 * hence free space modification requires modification of all three current

 * dquots in a single transaction. For this case we need to have a reservation

 * of at least 3 dquots.

 *

 * However, a chmod operation can change both UID and GID in a single

 * transaction, resulting in requiring {old, new} x {uid, gid} dquots to be

 * modified. Hence for this case we need to reserve space for at least 4 dquots.

 *

 * And in the worst case, there's a rename operation that can be modifying up to

 * 4 inodes with dquots attached to them. In reality, the only inodes that can

 * have their dquots modified are the source and destination directory inodes

 * due to directory name creation and removal. That can require space allocation

 * and/or freeing on both directory inodes, and hence all three dquots on each

 * inode can be modified. And if the directories are world writeable, all the

 * dquots can be unique and so 6 dquots can be modified....

 *

 * And, of course, we also need to take into account the dquot log format item

 * used to describe each dquot.

 */

#define XFS_DQUOT_LOGRES(mp)	\

	((sizeof(struct xfs_dq_logformat) + sizeof(struct xfs_disk_dquot)) * 6)



#define XFS_IS_QUOTA_RUNNING(mp)	((mp)->m_qflags & XFS_ALL_QUOTA_ACCT)

#define XFS_IS_UQUOTA_RUNNING(mp)	((mp)->m_qflags & XFS_UQUOTA_ACCT)

#define XFS_IS_PQUOTA_RUNNING(mp)	((mp)->m_qflags & XFS_PQUOTA_ACCT)

#define XFS_IS_GQUOTA_RUNNING(mp)	((mp)->m_qflags & XFS_GQUOTA_ACCT)

#define XFS_IS_UQUOTA_ENFORCED(mp)	((mp)->m_qflags & XFS_UQUOTA_ENFD)

#define XFS_IS_GQUOTA_ENFORCED(mp)	((mp)->m_qflags & XFS_GQUOTA_ENFD)

#define XFS_IS_PQUOTA_ENFORCED(mp)	((mp)->m_qflags & XFS_PQUOTA_ENFD)



/*

 * 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	0x1000  /* uquotas are being turned off */

#define XFS_GQUOTA_ACTIVE	0x2000  /* gquotas are being turned off */

#define XFS_PQUOTA_ACTIVE	0x4000  /* pquotas are being turned off */

#define XFS_ALL_QUOTA_ACTIVE	\

	(XFS_UQUOTA_ACTIVE | XFS_GQUOTA_ACTIVE | XFS_PQUOTA_ACTIVE)



/*

 * 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 | \

						   XFS_PQUOTA_ACTIVE))

#define XFS_IS_OQUOTA_ON(mp)	((mp)->m_qflags & (XFS_GQUOTA_ACTIVE | \

						   XFS_PQUOTA_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)

#define XFS_IS_PQUOTA_ON(mp)	((mp)->m_qflags & XFS_PQUOTA_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_DQALLOC	0x0000002 /* alloc dquot ondisk if needed */

#define XFS_QMOPT_UQUOTA	0x0000004 /* user dquot requested */

#define XFS_QMOPT_PQUOTA	0x0000008 /* project dquot requested */

#define XFS_QMOPT_FORCE_RES	0x0000010 /* ignore quota limits */

#define XFS_QMOPT_SBVERSION	0x0000040 /* change superblock version num */

#define XFS_QMOPT_DOWARN        0x0000400 /* increase warning cnt if needed */

#define XFS_QMOPT_DQREPAIR	0x0001000 /* repair dquot if damaged */

#define XFS_QMOPT_GQUOTA	0x0002000 /* group dquot requested */

#define XFS_QMOPT_ENOSPC	0x0004000 /* enospc instead of edquot (prj) */



/*

 * 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 dqalloc.

 */

#define XFS_QMOPT_INHERIT	0x1000000



/*

 * 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_PQUOTA | XFS_QMOPT_GQUOTA)

#define XFS_QMOPT_RESBLK_MASK	(XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_RES_RTBLKS)



#endif	/* __XFS_QUOTA_H__ */

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