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- /*
- * Copyright (c) 1982, 1986 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 7.9 (Berkeley) 2/22/91
- */
-
- #ifndef _QUOTA_
- #define _QUOTA_
-
- /*
- * 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) /* 1 week */
- #define MAX_DQ_TIME (7*24*60*60) /* 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_long dqb_bhardlimit; /* absolute limit on disk blks alloc */
- u_long dqb_bsoftlimit; /* preferred limit on disk blks */
- u_long dqb_curblocks; /* current block count */
- u_long dqb_ihardlimit; /* maximum # allocated inodes + 1 */
- u_long dqb_isoftlimit; /* preferred inode limit */
- u_long 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
- /*
- * 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 {
- struct dquot *dq_forw, *dq_back;/* MUST be first entry */
- struct dquot *dq_freef, **dq_freeb; /* free list */
- short dq_flags; /* flags, see below */
- short dq_cnt; /* count of active references */
- short dq_spare; /* unused spare padding */
- short dq_type; /* quota type of this dquot */
- u_long 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 ((struct dquot *) 0)
-
- /*
- * 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.
- */
- #ifndef DIAGNOSTIC
- #define DQREF(dq) (dq)->dq_cnt++
- #else
- #define DQREF(dq) dqref(dq)
- #endif /* DIAGNOSTIC */
-
- #else
-
- #include <sys/cdefs.h>
-
- __BEGIN_DECLS
- int quotactl __P((const char *, int, int, void *));
- __END_DECLS
-
- #endif /* KERNEL */
- #endif /* _QUOTA_ */
-