/* $NetBSD: ufs_quota.h,v 1.22 2014/06/28 22:27:51 dholland Exp $ */ /* * Copyright (c) 1982, 1986, 1990, 1993, 1995 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Robert Elz at The University of Melbourne. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)ufs_quota.c 8.5 (Berkeley) 5/20/95 */ #include <ufs/ufs/quota1.h> #include <ufs/ufs/quota2.h> struct quotakcursor; /* from <sys/quotactl.h> */ /* link to this quota in the quota inode (for QUOTA2) */ struct dq2_desc { uint64_t dq2_lblkno; /* logical disk block holding this quota */ u_int dq2_blkoff; /* offset in disk block holding this quota */ }; /* * The following structure records disk usage for a user or group on a * filesystem. There is one allocated for each quota that exists on any * filesystem for the current user or group. A cache is kept of recently * used entries. * Field markings and the corresponding locks: * h: dqlock * d: dq_interlock * * Lock order is: dq_interlock -> dqlock * dq_interlock -> dqvp */ struct dquot { LIST_ENTRY(dquot) dq_hash; /* h: hash list */ u_int16_t dq_flags; /* d: flags, see below */ u_int16_t dq_type; /* d: quota type of this dquot */ u_int32_t dq_cnt; /* h: count of active references */ u_int32_t dq_id; /* d: identifier this applies to */ struct ufsmount *dq_ump; /* d: filesystem this is taken from */ kmutex_t dq_interlock; /* d: lock this dquot */ union { struct dqblk dq1_dqb; /* d: actual usage & quotas */ struct dq2_desc dq2_desc; /* d: pointer to quota data */ } dq_un; }; /* * Flag values. */ #define DQ_MOD 0x04 /* this quota modified since read */ #define DQ_FAKE 0x08 /* no limits here, just usage */ #define DQ_WARN(ltype) (0x10 << ltype) /* has been warned about "type" limit */ /* * Shorthand notation. */ #define dq_bhardlimit dq_un.dq1_dqb.dqb_bhardlimit #define dq_bsoftlimit dq_un.dq1_dqb.dqb_bsoftlimit #define dq_curblocks dq_un.dq1_dqb.dqb_curblocks #define dq_ihardlimit dq_un.dq1_dqb.dqb_ihardlimit #define dq_isoftlimit dq_un.dq1_dqb.dqb_isoftlimit #define dq_curinodes dq_un.dq1_dqb.dqb_curinodes #define dq_btime dq_un.dq1_dqb.dqb_btime #define dq_itime dq_un.dq1_dqb.dqb_itime #define dq2_lblkno dq_un.dq2_desc.dq2_lblkno #define dq2_blkoff dq_un.dq2_desc.dq2_blkoff /* * If the system has never checked for a quota for this file, then it is * set to NODQUOT. Once a write attempt is made the inode pointer is set * to reference a dquot structure. */ #define NODQUOT NULL extern kmutex_t dqlock; extern kcondvar_t dqcv; /* * Quota name to error message mapping. */ extern const char *quotatypes[MAXQUOTAS]; int getinoquota(struct inode *); int dqget(struct vnode *, u_long, struct ufsmount *, int, struct dquot **); void dqref(struct dquot *); void dqrele(struct vnode *, struct dquot *); void dqflush(struct vnode *); int chkdq1(struct inode *, int64_t, kauth_cred_t, int); int chkiq1(struct inode *, int32_t, kauth_cred_t, int); int q1sync(struct mount *); int dq1get(struct vnode *, u_long, struct ufsmount *, int, struct dquot *); int dq1sync(struct vnode *, struct dquot *); int quota1_handle_cmd_get(struct ufsmount *, const struct quotakey *, struct quotaval *); int quota1_handle_cmd_put(struct ufsmount *, const struct quotakey *, const struct quotaval *); int quota1_handle_cmd_quotaon(struct lwp *, struct ufsmount *, int, const char *); int quota1_handle_cmd_quotaoff(struct lwp *, struct ufsmount *, int); int chkdq2(struct inode *, int64_t, kauth_cred_t, int); int chkiq2(struct inode *, int32_t, kauth_cred_t, int); int quota2_handle_cmd_get(struct ufsmount *, const struct quotakey *, struct quotaval *); int quota2_handle_cmd_put(struct ufsmount *, const struct quotakey *, const struct quotaval *); int quota2_handle_cmd_del(struct ufsmount *, const struct quotakey *); int quota2_handle_cmd_cursorget(struct ufsmount *, struct quotakcursor *, struct quotakey *, struct quotaval *, unsigned, unsigned *); int quota2_handle_cmd_cursoropen(struct ufsmount *, struct quotakcursor *); int quota2_handle_cmd_cursorclose(struct ufsmount *, struct quotakcursor *); int quota2_handle_cmd_cursorskipidtype(struct ufsmount *, struct quotakcursor *, int); int quota2_handle_cmd_cursoratend(struct ufsmount *, struct quotakcursor *, int *); int quota2_handle_cmd_cursorrewind(struct ufsmount *, struct quotakcursor *); int q2sync(struct mount *); int dq2get(struct vnode *, u_long, struct ufsmount *, int, struct dquot *); int dq2sync(struct vnode *, struct dquot *);
