// 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);

  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 *);
  
  #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)
  #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;
  }

  #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)
  #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, pd, nb, ni, f) \
  	xfs_trans_reserve_quota_bydquots(tp, mp, ud, gd, pd, nb, ni, \

  				f | XFS_QMOPT_RES_REGBLKS)

  extern int xfs_mount_reset_sbqflags(struct xfs_mount *);

  #endif	/* __XFS_QUOTA_H__ */