include/xfs_dquot_item.h

   1 /*
   2  * Copyright (c) 2000 Silicon Graphics, Inc.  All Rights Reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of version 2 of the GNU General Public License as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it would be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  11  *
  12  * Further, this software is distributed without any warranty that it is
  13  * free of the rightful claim of any third person regarding infringement
  14  * or the like.  Any license provided herein, whether implied or
  15  * otherwise, applies only to this software file.  Patent licenses, if
  16  * any, provided herein do not apply to combinations of this program with
  17  * other software, or any other product whatsoever.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write the Free Software Foundation, Inc., 59
  21  * Temple Place - Suite 330, Boston MA 02111-1307, USA.
  22  *
  23  * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
  24  * Mountain View, CA  94043, or:
  25  *
  26  * http://www.sgi.com
  27  *
  28  * For further information regarding this notice, see:
  29  *
  30  * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
  31  */
  32 #ifndef __XFS_DQUOT_ITEM_H__
  33 #define __XFS_DQUOT_ITEM_H__
  34
  35 /*
  36  * These are the structures used to lay out dquots and quotaoff
  37  * records on the log. Quite similar to those of inodes.
  38  */
  39
  40 /*
  41  * log format struct for dquots.
  42  * The first two fields must be the type and size fitting into
  43  * 32 bits : log_recovery code assumes that.
  44  */
  45 typedef struct xfs_dq_logformat {
  46         __uint16_t              qlf_type;      /* dquot log item type */
  47         __uint16_t              qlf_size;      /* size of this item */
  48         xfs_dqid_t              qlf_id;        /* usr/grp id number : 32 bits */
  49         __int64_t               qlf_blkno;     /* blkno of dquot buffer */
  50         __int32_t               qlf_len;       /* len of dquot buffer */
  51         __uint32_t              qlf_boffset;   /* off of dquot in buffer */
  52 } xfs_dq_logformat_t;
  53
  54 /*
  55  * log format struct for QUOTAOFF records.
  56  * The first two fields must be the type and size fitting into
  57  * 32 bits : log_recovery code assumes that.
  58  * We write two LI_QUOTAOFF logitems per quotaoff, the last one keeps a pointer
  59  * to the first and ensures that the first logitem is taken out of the AIL
  60  * only when the last one is securely committed.
  61  */
  62 typedef struct xfs_qoff_logformat {
  63         unsigned short          qf_type;        /* quotaoff log item type */
  64         unsigned short          qf_size;        /* size of this item */
  65         unsigned int            qf_flags;       /* USR and/or GRP */
  66         char                    qf_pad[12];     /* padding for future */
  67 } xfs_qoff_logformat_t;
  68
  69
  70 #ifdef __KERNEL__
  71
  72 struct xfs_dquot;
  73 struct xfs_trans;
  74 struct xfs_mount;
  75 typedef struct xfs_dq_logitem {
  76         xfs_log_item_t           qli_item;         /* common portion */
  77         struct xfs_dquot        *qli_dquot;        /* dquot ptr */
  78         xfs_lsn_t                qli_flush_lsn;    /* lsn at last flush */
  79         unsigned short           qli_pushbuf_flag; /* one bit used in push_ail */
  80 #ifdef DEBUG
  81         uint64_t                 qli_push_owner;
  82 #endif
  83         xfs_dq_logformat_t       qli_format;       /* logged structure */
  84 } xfs_dq_logitem_t;
  85
  86
  87 typedef struct xfs_qoff_logitem {
  88         xfs_log_item_t           qql_item;      /* common portion */
  89         struct xfs_qoff_logitem *qql_start_lip; /* qoff-start logitem, if any */
  90         xfs_qoff_logformat_t     qql_format;    /* logged structure */
  91 } xfs_qoff_logitem_t;
  92
  93
  94 extern void                xfs_qm_dquot_logitem_init(struct xfs_dquot *);
  95 extern xfs_qoff_logitem_t *xfs_qm_qoff_logitem_init(struct xfs_mount *,
  96                                                     xfs_qoff_logitem_t *, uint);
  97 extern xfs_qoff_logitem_t *xfs_trans_get_qoff_item(struct xfs_trans *,
  98                                                    xfs_qoff_logitem_t *, uint);
  99 extern void                xfs_trans_log_quotaoff_item(struct xfs_trans *,
 100                                                        xfs_qoff_logitem_t *);
 101
 102 #endif  /* __KERNEL__ */
 103
 104 #endif  /* __XFS_DQUOT_ITEM_H__ */