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+/*
+ * Copyright (c) 1982, 1986, 1993
+ * 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. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. 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.
+ *
+ * @(#)quota.h 8.3 (Berkeley) 8/19/94
+ * %FreeBSD: src/sys/ufs/ufs/quota.h,v 1.15 1999/12/29 04:55:05 peter Exp %
+ * $FreeBSD$
+ */
+
+#ifndef _UFS_UFS_QUOTA_H_
+#define _UFS_UFS_QUOTA_H_
+
+/*
+ * Definitions for disk quotas imposed on the average user
+ * (big brother finally hits UNIX).
+ *
+ * The following constants define the amount of time given a user before the
+ * soft limits are treated as hard limits (usually resulting in an allocation
+ * failure). The timer is started when the user crosses their soft limit, it
+ * is reset when they go below their soft limit.
+ */
+#define MAX_IQ_TIME (7*24*60*60) /* seconds in 1 week */
+#define MAX_DQ_TIME (7*24*60*60) /* seconds in 1 week */
+
+/*
+ * The following constants define the usage of the quota file array in the
+ * ufsmount structure and dquot array in the inode structure. The semantics
+ * of the elements of these arrays are defined in the routine getinoquota;
+ * the remainder of the quota code treats them generically and need not be
+ * inspected when changing the size of the array.
+ */
+#define MAXQUOTAS 2
+#define USRQUOTA 0 /* element used for user quotas */
+#define GRPQUOTA 1 /* element used for group quotas */
+
+/*
+ * Definitions for the default names of the quotas files.
+ */
+#define INITQFNAMES { \
+ "user", /* USRQUOTA */ \
+ "group", /* GRPQUOTA */ \
+ "undefined", \
+}
+#define QUOTAFILENAME "quota"
+#define QUOTAGROUP "operator"
+
+/*
+ * Command definitions for the 'quotactl' system call. The commands are
+ * broken into a main command defined below and a subcommand that is used
+ * to convey the type of quota that is being manipulated (see above).
+ */
+#define SUBCMDMASK 0x00ff
+#define SUBCMDSHIFT 8
+#define QCMD(cmd, type) (((cmd) << SUBCMDSHIFT) | ((type) & SUBCMDMASK))
+
+#define Q_QUOTAON 0x0100 /* enable quotas */
+#define Q_QUOTAOFF 0x0200 /* disable quotas */
+#define Q_GETQUOTA 0x0300 /* get limits and usage */
+#define Q_SETQUOTA 0x0400 /* set limits and usage */
+#define Q_SETUSE 0x0500 /* set usage */
+#define Q_SYNC 0x0600 /* sync disk copy of a filesystems quotas */
+
+/*
+ * The following structure defines the format of the disk quota file
+ * (as it appears on disk) - the file is an array of these structures
+ * indexed by user or group number. The setquota system call establishes
+ * the vnode for each quota file (a pointer is retained in the ufsmount
+ * structure).
+ */
+struct dqblk {
+ u_int32_t dqb_bhardlimit; /* absolute limit on disk blks alloc */
+ u_int32_t dqb_bsoftlimit; /* preferred limit on disk blks */
+ u_int32_t dqb_curblocks; /* current block count */
+ u_int32_t dqb_ihardlimit; /* maximum # allocated inodes + 1 */
+ u_int32_t dqb_isoftlimit; /* preferred inode limit */
+ u_int32_t dqb_curinodes; /* current # allocated inodes */
+ time_t dqb_btime; /* time limit for excessive disk use */
+ time_t dqb_itime; /* time limit for excessive files */
+};
+
+#ifdef _KERNEL
+
+#include <sys/queue.h>
+
+/*
+ * 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.
+ */
+struct dquot {
+ LIST_ENTRY(dquot) dq_hash; /* hash list */
+ TAILQ_ENTRY(dquot) dq_freelist; /* free list */
+ u_int16_t dq_flags; /* flags, see below */
+ u_int16_t dq_cnt; /* count of active references */
+ u_int16_t dq_spare; /* unused spare padding */
+ u_int16_t dq_type; /* quota type of this dquot */
+ u_int32_t dq_id; /* identifier this applies to */
+ struct ufsmount *dq_ump; /* filesystem that this is taken from */
+ struct dqblk dq_dqb; /* actual usage & quotas */
+};
+/*
+ * Flag values.
+ */
+#define DQ_LOCK 0x01 /* this quota locked (no MODS) */
+#define DQ_WANT 0x02 /* wakeup on unlock */
+#define DQ_MOD 0x04 /* this quota modified since read */
+#define DQ_FAKE 0x08 /* no limits here, just usage */
+#define DQ_BLKS 0x10 /* has been warned about blk limit */
+#define DQ_INODS 0x20 /* has been warned about inode limit */
+/*
+ * Shorthand notation.
+ */
+#define dq_bhardlimit dq_dqb.dqb_bhardlimit
+#define dq_bsoftlimit dq_dqb.dqb_bsoftlimit
+#define dq_curblocks dq_dqb.dqb_curblocks
+#define dq_ihardlimit dq_dqb.dqb_ihardlimit
+#define dq_isoftlimit dq_dqb.dqb_isoftlimit
+#define dq_curinodes dq_dqb.dqb_curinodes
+#define dq_btime dq_dqb.dqb_btime
+#define dq_itime dq_dqb.dqb_itime
+
+/*
+ * 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
+
+/*
+ * Flags to chkdq() and chkiq()
+ */
+#define FORCE 0x01 /* force usage changes independent of limits */
+#define CHOWN 0x02 /* (advisory) change initiated by chown */
+
+/*
+ * Macros to avoid subroutine calls to trivial functions.
+ */
+#ifdef DIAGNOSTIC
+#define DQREF(dq) dqref(dq)
+#else
+#define DQREF(dq) (dq)->dq_cnt++
+#endif
+
+struct inode;
+struct mount;
+struct proc;
+struct ucred;
+struct vnode;
+
+int chkdq __P((struct inode *, long, struct ucred *, int));
+int chkiq __P((struct inode *, long, struct ucred *, int));
+void dqinit __P((void));
+void dqrele __P((struct vnode *, struct dquot *));
+int getinoquota __P((struct inode *));
+int getquota __P((struct mount *, u_long, int, caddr_t));
+int qsync __P((struct mount *mp));
+int quotaoff __P((struct proc *, struct mount *, int));
+int quotaon __P((struct proc *, struct mount *, int, caddr_t));
+int setquota __P((struct mount *, u_long, int, caddr_t));
+int setuse __P((struct mount *, u_long, int, caddr_t));
+int ufs_quotactl __P((struct mount *, int, uid_t, caddr_t, struct proc *));
+
+#else /* !_KERNEL */
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+int quotactl __P((const char *, int, int, void *));
+__END_DECLS
+
+#endif /* _KERNEL */
+
+#endif /* !_UFS_UFS_QUOTA_H_ */
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