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/*
* 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__ */
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