File: [local] / sys / ufs / ufs / quota.h (download)
Revision 1.1, Tue Mar 4 16:16:20 2008 UTC (16 years, 6 months ago) by nbrk
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Initial revision
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/* $OpenBSD: quota.h,v 1.8 2003/06/02 23:28:23 millert Exp $ */
/* $NetBSD: quota.h,v 1.6 1995/03/26 20:38:17 jtc Exp $ */
/*
* 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. 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
*/
#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) /* 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
/*
* Flags to ufs_quota_{alloc,free}_{blocks,inode}2
*/
enum ufs_quota_flags {
UFS_QUOTA_NOUID = 0x1, /* Don't change UID quota */
UFS_QUOTA_NOGID = 0x2, /* Don't change GID quota */
UFS_QUOTA_FORCE = 0x1000 /* don't check limits - just change it */
}; /* Change GID */
#include <sys/cdefs.h>
struct dquot;
struct inode;
struct mount;
struct proc;
struct ucred;
struct ufsmount;
struct vnode;
__BEGIN_DECLS
#define ufs_quota_alloc_blocks(i, c, cr) ufs_quota_alloc_blocks2(i, c, cr, 0)
#define ufs_quota_free_blocks(i, c, cr) ufs_quota_free_blocks2(i, c, cr, 0)
#define ufs_quota_alloc_inode(i, cr) ufs_quota_alloc_inode2(i, cr, 0)
#define ufs_quota_free_inode(i, cr) ufs_quota_free_inode2(i, cr, 0)
int ufs_quota_alloc_blocks2(struct inode *, int32_t, struct ucred *, enum ufs_quota_flags);
int ufs_quota_free_blocks2(struct inode *, int32_t, struct ucred *, enum ufs_quota_flags);
int ufs_quota_alloc_inode2(struct inode *, struct ucred *, enum ufs_quota_flags);
int ufs_quota_free_inode2(struct inode *, struct ucred *, enum ufs_quota_flags);
int ufs_quota_delete(struct inode *);
int getinoquota(struct inode *);
int quotaoff(struct proc *, struct mount *, int);
int qsync(struct mount *mp);
int ufs_quotactl(struct mount *, int, uid_t, caddr_t, struct proc *);
void ufs_quota_init(void);
__END_DECLS
#endif /* _KERNEL */
#endif /* _QUOTA_ */