| /* |
| * 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__ |
| |
| struct xfs_trans; |
| |
| /* |
| * 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; |
| |
| /* |
| * 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; |
| |
| /* |
| * 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_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" } |
| |
| /* |
| * 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_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_OQUOTA_ENFORCED(mp) ((mp)->m_qflags & XFS_OQUOTA_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 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_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) |
| |
| #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. |
| * 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) |
| |
| |
| /* |
| * 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; |
| |
| #ifdef CONFIG_XFS_QUOTA |
| extern void xfs_trans_dup_dqinfo(struct xfs_trans *, struct xfs_trans *); |
| extern void xfs_trans_free_dqinfo(struct xfs_trans *); |
| extern void 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_mount *, struct xfs_dquot *, |
| struct xfs_dquot *, long, long, uint); |
| |
| extern int xfs_qm_vop_dqalloc(struct xfs_inode *, uid_t, gid_t, prid_t, uint, |
| struct xfs_dquot **, struct xfs_dquot **); |
| extern void xfs_qm_vop_create_dqattach(struct xfs_trans *, struct xfs_inode *, |
| struct xfs_dquot *, struct xfs_dquot *); |
| extern int xfs_qm_vop_rename_dqattach(struct xfs_inode **); |
| 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_chown_reserve(struct xfs_trans *, struct xfs_inode *, |
| struct xfs_dquot *, struct xfs_dquot *, uint); |
| extern int xfs_qm_dqattach(struct xfs_inode *, uint); |
| extern int xfs_qm_dqattach_locked(struct xfs_inode *, uint); |
| extern void xfs_qm_dqdetach(struct xfs_inode *); |
| extern void xfs_qm_dqrele(struct xfs_dquot *); |
| extern void xfs_qm_statvfs(struct xfs_inode *, struct kstatfs *); |
| extern int xfs_qm_newmount(struct xfs_mount *, uint *, uint *); |
| extern void xfs_qm_mount_quotas(struct xfs_mount *); |
| extern void xfs_qm_unmount(struct xfs_mount *); |
| extern void xfs_qm_unmount_quotas(struct xfs_mount *); |
| |
| #else |
| static inline int |
| xfs_qm_vop_dqalloc(struct xfs_inode *ip, uid_t uid, gid_t gid, prid_t prid, |
| uint flags, struct xfs_dquot **udqp, struct xfs_dquot **gdqp) |
| { |
| *udqp = NULL; |
| *gdqp = NULL; |
| return 0; |
| } |
| #define xfs_trans_dup_dqinfo(tp, tp2) |
| #define xfs_trans_free_dqinfo(tp) |
| #define xfs_trans_mod_dquot_byino(tp, ip, fields, delta) |
| #define xfs_trans_apply_dquot_deltas(tp) |
| #define xfs_trans_unreserve_and_mod_dquots(tp) |
| static inline int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp, |
| struct xfs_inode *ip, long nblks, long ninos, uint flags) |
| { |
| return 0; |
| } |
| static inline int xfs_trans_reserve_quota_bydquots(struct xfs_trans *tp, |
| struct xfs_mount *mp, struct xfs_dquot *udqp, |
| struct xfs_dquot *gdqp, long nblks, long nions, uint flags) |
| { |
| return 0; |
| } |
| #define xfs_qm_vop_create_dqattach(tp, ip, u, g) |
| #define xfs_qm_vop_rename_dqattach(it) (0) |
| #define xfs_qm_vop_chown(tp, ip, old, new) (NULL) |
| #define xfs_qm_vop_chown_reserve(tp, ip, u, g, fl) (0) |
| #define xfs_qm_dqattach(ip, fl) (0) |
| #define xfs_qm_dqattach_locked(ip, fl) (0) |
| #define xfs_qm_dqdetach(ip) |
| #define xfs_qm_dqrele(d) |
| #define xfs_qm_statvfs(ip, s) |
| #define xfs_qm_newmount(mp, a, b) (0) |
| #define xfs_qm_mount_quotas(mp) |
| #define xfs_qm_unmount(mp) |
| #define xfs_qm_unmount_quotas(mp) |
| #endif /* CONFIG_XFS_QUOTA */ |
| |
| #define xfs_trans_unreserve_quota_nblks(tp, ip, nblks, ninos, flags) \ |
| xfs_trans_reserve_quota_nblks(tp, ip, -(nblks), -(ninos), flags) |
| #define xfs_trans_reserve_quota(tp, mp, ud, gd, nb, ni, f) \ |
| xfs_trans_reserve_quota_bydquots(tp, mp, ud, gd, nb, ni, \ |
| f | XFS_QMOPT_RES_REGBLKS) |
| |
| extern int xfs_qm_dqcheck(struct xfs_mount *, xfs_disk_dquot_t *, |
| xfs_dqid_t, uint, uint, char *); |
| extern int xfs_mount_reset_sbqflags(struct xfs_mount *); |
| |
| #endif /* __KERNEL__ */ |
| #endif /* __XFS_QUOTA_H__ */ |
