147 lines
6.1 KiB
C
147 lines
6.1 KiB
C
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/* $NetBSD: ulfs_quota.h,v 1.4 2013/06/06 00:49:28 dholland Exp $ */
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/* from NetBSD: ufs_quota.h,v 1.21 2012/02/18 06:13:23 matt Exp */
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/*
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* Copyright (c) 1982, 1986, 1990, 1993, 1995
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Robert Elz at The University of Melbourne.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)ufs_quota.c 8.5 (Berkeley) 5/20/95
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*/
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#include <ufs/lfs/ulfs_quota1.h>
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#include <ufs/lfs/ulfs_quota2.h>
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struct quotakcursor; /* from <sys/quotactl.h> */
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/* link to this quota in the quota inode (for QUOTA2) */
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struct dq2_desc {
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uint64_t dq2_lblkno; /* logical disk block holding this quota */
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u_int dq2_blkoff; /* offset in disk block holding this quota */
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};
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/*
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* The following structure records disk usage for a user or group on a
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* filesystem. There is one allocated for each quota that exists on any
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* filesystem for the current user or group. A cache is kept of recently
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* used entries.
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* Field markings and the corresponding locks:
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* h: dqlock
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* d: dq_interlock
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*
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* Lock order is: dq_interlock -> dqlock
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* dq_interlock -> dqvp
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*/
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struct dquot {
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LIST_ENTRY(dquot) dq_hash; /* h: hash list */
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u_int16_t dq_flags; /* d: flags, see below */
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u_int16_t dq_type; /* d: quota type of this dquot */
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u_int32_t dq_cnt; /* h: count of active references */
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u_int32_t dq_id; /* d: identifier this applies to */
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struct ulfsmount *dq_ump; /* d: filesystem this is taken from */
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kmutex_t dq_interlock; /* d: lock this dquot */
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union {
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struct dqblk dq1_dqb; /* d: actual usage & quotas */
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struct dq2_desc dq2_desc; /* d: pointer to quota data */
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} dq_un;
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};
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/*
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* Flag values.
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*/
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#define DQ_MOD 0x04 /* this quota modified since read */
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#define DQ_FAKE 0x08 /* no limits here, just usage */
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#define DQ_WARN(ltype) (0x10 << ltype) /* has been warned about "type" limit */
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/*
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* Shorthand notation.
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*/
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#define dq_bhardlimit dq_un.dq1_dqb.dqb_bhardlimit
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#define dq_bsoftlimit dq_un.dq1_dqb.dqb_bsoftlimit
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#define dq_curblocks dq_un.dq1_dqb.dqb_curblocks
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#define dq_ihardlimit dq_un.dq1_dqb.dqb_ihardlimit
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#define dq_isoftlimit dq_un.dq1_dqb.dqb_isoftlimit
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#define dq_curinodes dq_un.dq1_dqb.dqb_curinodes
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#define dq_btime dq_un.dq1_dqb.dqb_btime
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#define dq_itime dq_un.dq1_dqb.dqb_itime
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#define dq2_lblkno dq_un.dq2_desc.dq2_lblkno
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#define dq2_blkoff dq_un.dq2_desc.dq2_blkoff
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/*
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* If the system has never checked for a quota for this file, then it is
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* set to NODQUOT. Once a write attempt is made the inode pointer is set
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* to reference a dquot structure.
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*/
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#define NODQUOT NULL
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extern kmutex_t lfs_dqlock;
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extern kcondvar_t lfs_dqcv;
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/*
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* Quota name to error message mapping.
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*/
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extern const char *lfs_quotatypes[ULFS_MAXQUOTAS];
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int lfs_getinoquota(struct inode *);
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int lfs_dqget(struct vnode *, u_long, struct ulfsmount *, int, struct dquot **);
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void lfs_dqref(struct dquot *);
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void lfs_dqrele(struct vnode *, struct dquot *);
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void lfs_dqflush(struct vnode *);
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int lfs_chkdq1(struct inode *, int64_t, kauth_cred_t, int);
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int lfs_chkiq1(struct inode *, int32_t, kauth_cred_t, int);
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int lfs_q1sync(struct mount *);
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int lfs_dq1get(struct vnode *, u_long, struct ulfsmount *, int, struct dquot *);
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int lfs_dq1sync(struct vnode *, struct dquot *);
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int lfsquota1_handle_cmd_get(struct ulfsmount *, const struct quotakey *,
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struct quotaval *);
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int lfsquota1_handle_cmd_put(struct ulfsmount *, const struct quotakey *,
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const struct quotaval *);
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int lfsquota1_handle_cmd_quotaon(struct lwp *, struct ulfsmount *, int,
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const char *);
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int lfsquota1_handle_cmd_quotaoff(struct lwp *, struct ulfsmount *, int);
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int lfs_chkdq2(struct inode *, int64_t, kauth_cred_t, int);
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int lfs_chkiq2(struct inode *, int32_t, kauth_cred_t, int);
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int lfsquota2_handle_cmd_get(struct ulfsmount *, const struct quotakey *,
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struct quotaval *);
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int lfsquota2_handle_cmd_put(struct ulfsmount *, const struct quotakey *,
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const struct quotaval *);
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int lfsquota2_handle_cmd_delete(struct ulfsmount *, const struct quotakey *);
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int lfsquota2_handle_cmd_cursorget(struct ulfsmount *, struct quotakcursor *,
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struct quotakey *, struct quotaval *, unsigned, unsigned *);
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int lfsquota2_handle_cmd_cursoropen(struct ulfsmount *, struct quotakcursor *);
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int lfsquota2_handle_cmd_cursorclose(struct ulfsmount *, struct quotakcursor *);
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int lfsquota2_handle_cmd_cursorskipidtype(struct ulfsmount *, struct quotakcursor *,
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int);
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int lfsquota2_handle_cmd_cursoratend(struct ulfsmount *, struct quotakcursor *,
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int *);
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int lfsquota2_handle_cmd_cursorrewind(struct ulfsmount *, struct quotakcursor *);
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int lfs_q2sync(struct mount *);
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int lfs_dq2get(struct vnode *, u_long, struct ulfsmount *, int, struct dquot *);
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int lfs_dq2sync(struct vnode *, struct dquot *);
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