| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
| * All Rights Reserved. |
| */ |
| #ifndef __XFS_QUOTA_H__ |
| #define __XFS_QUOTA_H__ |
| |
| #include "xfs_quota_defs.h" |
| |
| /* |
| * Kernel only quota definitions and functions |
| */ |
| |
| struct xfs_trans; |
| struct xfs_buf; |
| |
| /* |
| * 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_GQUOTA_ON(mp) && (ip)->i_gdquot == NULL) || \ |
| (XFS_IS_PQUOTA_ON(mp) && (ip)->i_pdquot == 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) || \ |
| (XFS_IS_PQUOTA_ON(mp) && \ |
| (mp->m_sb.sb_qflags & XFS_PQUOTA_CHKD) == 0)) |
| |
| static inline uint |
| xfs_quota_chkd_flag( |
| xfs_dqtype_t type) |
| { |
| switch (type) { |
| case XFS_DQTYPE_USER: |
| return XFS_UQUOTA_CHKD; |
| case XFS_DQTYPE_GROUP: |
| return XFS_GQUOTA_CHKD; |
| case XFS_DQTYPE_PROJ: |
| return XFS_PQUOTA_CHKD; |
| default: |
| return 0; |
| } |
| } |
| |
| /* |
| * The structure kept inside the xfs_trans_t keep track of dquot changes |
| * within a transaction and apply them later. |
| */ |
| struct xfs_dqtrx { |
| struct xfs_dquot *qt_dquot; /* the dquot this refers to */ |
| |
| uint64_t qt_blk_res; /* blks reserved on a dquot */ |
| int64_t qt_bcount_delta; /* dquot blk count changes */ |
| int64_t qt_delbcnt_delta; /* delayed dquot blk count changes */ |
| |
| uint64_t qt_rtblk_res; /* # blks reserved on a dquot */ |
| uint64_t qt_rtblk_res_used;/* # blks used from reservation */ |
| int64_t qt_rtbcount_delta;/* dquot realtime blk changes */ |
| int64_t qt_delrtb_delta; /* delayed RT blk count changes */ |
| |
| uint64_t qt_ino_res; /* inode reserved on a dquot */ |
| uint64_t qt_ino_res_used; /* inodes used from the reservation */ |
| int64_t qt_icount_delta; /* dquot inode count changes */ |
| }; |
| |
| #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, int64_t); |
| 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 *, int64_t, long, uint); |
| extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *, |
| struct xfs_mount *, struct xfs_dquot *, |
| struct xfs_dquot *, struct xfs_dquot *, int64_t, long, uint); |
| int xfs_trans_reserve_quota_icreate(struct xfs_trans *tp, |
| struct xfs_dquot *udqp, struct xfs_dquot *gdqp, |
| struct xfs_dquot *pdqp, int64_t dblocks); |
| |
| extern int xfs_qm_vop_dqalloc(struct xfs_inode *, kuid_t, kgid_t, |
| prid_t, uint, struct xfs_dquot **, 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 *, 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 *, |
| struct xfs_dquot *, uint); |
| extern int xfs_qm_dqattach(struct xfs_inode *); |
| extern int xfs_qm_dqattach_locked(struct xfs_inode *ip, bool doalloc); |
| 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 *); |
| |
| static inline int |
| xfs_quota_reserve_blkres(struct xfs_inode *ip, int64_t blocks) |
| { |
| return xfs_trans_reserve_quota_nblks(NULL, ip, blocks, 0, |
| XFS_QMOPT_RES_REGBLKS); |
| } |
| #else |
| static inline int |
| xfs_qm_vop_dqalloc(struct xfs_inode *ip, kuid_t kuid, kgid_t kgid, |
| prid_t prid, uint flags, struct xfs_dquot **udqp, |
| struct xfs_dquot **gdqp, struct xfs_dquot **pdqp) |
| { |
| *udqp = NULL; |
| *gdqp = NULL; |
| *pdqp = 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) do { } while (0) |
| #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, int64_t 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, struct xfs_dquot *pdqp, |
| int64_t nblks, long nions, uint flags) |
| { |
| return 0; |
| } |
| |
| static inline int |
| xfs_quota_reserve_blkres(struct xfs_inode *ip, int64_t blocks) |
| { |
| return 0; |
| } |
| |
| static inline int |
| xfs_trans_reserve_quota_icreate(struct xfs_trans *tp, struct xfs_dquot *udqp, |
| struct xfs_dquot *gdqp, struct xfs_dquot *pdqp, int64_t dblocks) |
| { |
| return 0; |
| } |
| |
| #define xfs_qm_vop_create_dqattach(tp, ip, u, g, p) |
| #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, p, fl) (0) |
| #define xfs_qm_dqattach(ip) (0) |
| #define xfs_qm_dqattach_locked(ip, fl) (0) |
| #define xfs_qm_dqdetach(ip) |
| #define xfs_qm_dqrele(d) do { (d) = (d); } while(0) |
| #define xfs_qm_statvfs(ip, s) do { } while(0) |
| #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 */ |
| |
| static inline int |
| xfs_quota_unreserve_blkres(struct xfs_inode *ip, int64_t blocks) |
| { |
| return xfs_quota_reserve_blkres(ip, -blocks); |
| } |
| |
| extern int xfs_mount_reset_sbqflags(struct xfs_mount *); |
| |
| #endif /* __XFS_QUOTA_H__ */ |