185 lines
6.7 KiB
C
185 lines
6.7 KiB
C
/*
|
|
* 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.
|
|
*
|
|
* from: @(#)quota.h 7.9 (Berkeley) 2/22/91
|
|
* $Id: quota.h,v 1.3 1993/05/20 03:53:30 cgd Exp $
|
|
*/
|
|
|
|
#ifndef _UFS_QUOTA_H_
|
|
#define _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) /* 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 /* !_UFS_QUOTA_H_ */
|