http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/xfs/xfs_quota.h

/* * 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_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 __uint32_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 { __be16 d_magic; /* dquot magic = XFS_DQUOT_MAGIC */ __u8 d_version; /* dquot version */ __u8 d_flags; /* XFS_DQ_USER/PROJ/GROUP */ __be32 d_id; /* user,project,group id */ __be64 d_blk_hardlimit;/* absolute limit on disk blks */ __be64 d_blk_softlimit;/* preferred limit on disk blks */ __be64 d_ino_hardlimit;/* maximum # allocated inodes */ __be64 d_ino_softlimit;/* preferred inode limit */ __be64 d_bcount; /* disk blocks owned by the user */ __be64 d_icount; /* inodes owned by the user */ __be32 d_itimer; /* zero if within inode limits if not, this is when we refuse service */ __be32 d_btimer; /* similar to above; for disk blocks */ __be16 d_iwarns; /* warnings issued wrt num inodes */ __be16 d_bwarns; /* warnings issued wrt disk blocks */ __be32 d_pad0; /* 64 bit align */ __be64 d_rtb_hardlimit;/* absolute limit on realtime blks */ __be64 d_rtb_softlimit;/* preferred limit on RT disk blks */ __be64 d_rtbcount; /* realtime blocks owned */ __be32 d_rtbtimer; /* similar to above; for RT disk blocks */ __be16 d_rtbwarns; /* warnings issued wrt RT disk blocks */ __be16 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 */ #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 */ #define XFS_DQ_ALLTYPES (XFS_DQ_USER|XFS_DQ_PROJ|XFS_DQ_GROUP) /* * 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/proj id : 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 /* project quota accounting ON */ #define XFS_OQUOTA_ENFD 0x0010 /* other (grp/prj) quota limits enforced */ #define XFS_OQUOTA_CHKD 0x0020 /* quotacheck run on other (grp/prj) quotas */ #define XFS_GQUOTA_ACCT 0x0040 /* group quota accounting ON */ /* * Quota Accounting/Enforcement flags */ #define XFS_ALL_QUOTA_ACCT \ (XFS_UQUOTA_ACCT | XFS_GQUOTA_ACCT | XFS_PQUOTA_ACCT) #define XFS_ALL_QUOTA_ENFD (XFS_UQUOTA_ENFD | XFS_OQUOTA_ENFD) #define XFS_ALL_QUOTA_CHKD (XFS_UQUOTA_CHKD | XFS_OQUOTA_CHKD) #define XFS_IS_QUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_ALL_QUOTA_ACCT) #define XFS_IS_QUOTA_ENFORCED(mp) ((mp)->m_qflags & XFS_ALL_QUOTA_ENFD) #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) /* * 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 0x0100 /* uquotas are being turned off */ #define XFS_PQUOTA_ACTIVE 0x0200 /* pquotas are being turned off */ #define XFS_GQUOTA_ACTIVE 0x0400 /* 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 | \ 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_DQLOCK 0x0000001 /* dqlock */ #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_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. */ #define XFS_QMOPT_GQUOTA 0x0002000 /* group dquot requested */ /* * 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_PQUOTA | 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_OQUOTA_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_OQUOTA_CHKD) == 0 || \ (mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT))) || \ (XFS_IS_PQUOTA_ON(mp) && \ ((mp->m_sb.sb_qflags & XFS_OQUOTA_CHKD) == 0 || \ (mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT)))) #define XFS_MOUNT_QUOTA_SET1 (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD|\ XFS_UQUOTA_CHKD|XFS_PQUOTA_ACCT|\ XFS_OQUOTA_ENFD|XFS_OQUOTA_CHKD) #define XFS_MOUNT_QUOTA_SET2 (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD|\ XFS_UQUOTA_CHKD|XFS_GQUOTA_ACCT|\ XFS_OQUOTA_ENFD|XFS_OQUOTA_CHKD) #define XFS_MOUNT_QUOTA_ALL (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD|\ XFS_UQUOTA_CHKD|XFS_PQUOTA_ACCT|\ XFS_OQUOTA_ENFD|XFS_OQUOTA_CHKD|\ XFS_GQUOTA_ACCT) #define XFS_MOUNT_QUOTA_MASK (XFS_MOUNT_QUOTA_ALL | XFS_UQUOTA_ACTIVE | \ XFS_GQUOTA_ACTIVE | XFS_PQUOTA_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_DQTRXOP_VOID(mp, tp, op, args...) \ ((mp)->m_qm_ops.xfs_dqtrxops ? \ ((mp)->m_qm_ops.xfs_dqtrxops->op)(tp, ## args) : (void)0) #define XFS_TRANS_DUP_DQINFO(mp, otp, ntp) \ XFS_DQTRXOP_VOID(mp, otp, qo_dup_dqinfo, ntp) #define XFS_TRANS_FREE_DQINFO(mp, tp) \ XFS_DQTRXOP_VOID(mp, tp, qo_free_dqinfo) #define XFS_TRANS_MOD_DQUOT_BYINO(mp, tp, ip, field, delta) \ XFS_DQTRXOP_VOID(mp, tp, qo_mod_dquot_byino, ip, field, delta) #define XFS_TRANS_APPLY_DQUOT_DELTAS(mp, tp) \ XFS_DQTRXOP_VOID(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_VOID(mp, tp, qo_unreserve_and_mod_dquots) #define XFS_TRANS_UNRESERVE_QUOTA_NBLKS(mp, tp, ip, nblks, ninos, flags) \ XFS_TRANS_RESERVE_QUOTA_NBLKS(mp, tp, ip, -(nblks), -(ninos), flags) #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 int xfs_mount_reset_sbqflags(struct xfs_mount *); extern struct bhv_vfsops xfs_qmops; #endif /* __KERNEL__ */ #endif /* __XFS_QUOTA_H__ */