/*
- * Copyright (c) 2000-2001 Silicon Graphics, Inc. All Rights Reserved.
- *
+ * 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://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,
+ * 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;
+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_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 | \
+#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)
+#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
#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_REGBLKS 0x0010000
#define XFS_QMOPT_RES_RTBLKS 0x0020000
#define XFS_QMOPT_BCOUNT 0x0040000
#define XFS_QMOPT_ICOUNT 0x0080000
*/
#define XFS_QMOPT_INHERIT 0x8000000
-/*
+/*
* flags to xfs_trans_mod_dquot.
*/
#define XFS_TRANS_DQ_RES_BLKS XFS_QMOPT_RES_REGBLKS
#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
+ * 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
+ * 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) &&\
#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.
+ * The structure kept inside the xfs_trans_t keep track of dquot changes
+ * within a transaction and apply them later.
*/
-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 *);
-
+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 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
+ * Dquot transaction functions, used if quota is enabled.
*/
-#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)
+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__ */
projects / thirdparty / xfsprogs-dev.git / blobdiff