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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.
* 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
* $FreeBSD$
*/
#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_GETQUOTA32 0x0300 /* get limits and usage (32-bit version) */
#define Q_SETQUOTA32 0x0400 /* set limits and usage (32-bit version) */
#define Q_SETUSE32 0x0500 /* set usage (32-bit version) */
#define Q_SYNC 0x0600 /* sync disk copy of a filesystems quotas */
#define Q_GETQUOTA 0x0700 /* get limits and usage (64-bit version) */
#define Q_SETQUOTA 0x0800 /* set limits and usage (64-bit version) */
#define Q_SETUSE 0x0900 /* set usage (64-bit version) */
#define Q_GETQUOTASIZE 0x0A00 /* get bit-size of quota file fields */
/*
* 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 dqblk32 {
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 */
int32_t dqb_btime; /* time limit for excessive disk use */
int32_t dqb_itime; /* time limit for excessive files */
};
struct dqblk64 {
u_int64_t dqb_bhardlimit; /* absolute limit on disk blks alloc */
u_int64_t dqb_bsoftlimit; /* preferred limit on disk blks */
u_int64_t dqb_curblocks; /* current block count */
u_int64_t dqb_ihardlimit; /* maximum # allocated inodes + 1 */
u_int64_t dqb_isoftlimit; /* preferred inode limit */
u_int64_t dqb_curinodes; /* current # allocated inodes */
int64_t dqb_btime; /* time limit for excessive disk use */
int64_t dqb_itime; /* time limit for excessive files */
};
#define dqblk dqblk64
#define Q_DQHDR64_MAGIC "QUOTA64"
#define Q_DQHDR64_VERSION 0x20081104
struct dqhdr64 {
char dqh_magic[8]; /* Q_DQHDR64_MAGIC */
uint32_t dqh_version; /* Q_DQHDR64_VERSION */
uint32_t dqh_hdrlen; /* header length */
uint32_t dqh_reclen; /* record length */
char dqh_unused[44]; /* reserved for future extension */
};
#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.
* (h) protected by dqhlock
*/
struct dquot {
LIST_ENTRY(dquot) dq_hash; /* (h) hash list */
TAILQ_ENTRY(dquot) dq_freelist; /* (h) free list */
struct mtx dq_lock; /* lock for concurrency */
u_int16_t dq_flags; /* flags, see below */
u_int16_t dq_type; /* quota type of this dquot */
u_int32_t dq_cnt; /* (h) count of active references */
u_int32_t dq_id; /* identifier this applies to */
struct ufsmount *dq_ump; /* (h) filesystem that this is
taken from */
struct dqblk64 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
#define DQI_LOCK(dq) mtx_lock(&(dq)->dq_lock)
#define DQI_UNLOCK(dq) mtx_unlock(&(dq)->dq_lock)
#define DQI_WAIT(dq, prio, msg) do { \
while ((dq)->dq_flags & DQ_LOCK) { \
(dq)->dq_flags |= DQ_WANT; \
(void) msleep((dq), \
&(dq)->dq_lock, (prio), (msg), 0); \
} \
} while (0)
#define DQI_WAKEUP(dq) do { \
if ((dq)->dq_flags & DQ_WANT) \
wakeup((dq)); \
(dq)->dq_flags &= ~(DQ_WANT|DQ_LOCK); \
} while (0)
struct inode;
struct mount;
struct thread;
struct ucred;
struct vnode;
int chkdq(struct inode *, int64_t, struct ucred *, int);
int chkiq(struct inode *, int, struct ucred *, int);
void dqinit(void);
void dqrele(struct vnode *, struct dquot *);
void dquninit(void);
int getinoquota(struct inode *);
int qsync(struct mount *mp);
int quotaoff(struct thread *td, struct mount *, int);
int quotaon(struct thread *td, struct mount *, int, void *);
int getquota32(struct thread *, struct mount *, u_long, int, void *);
int setquota32(struct thread *, struct mount *, u_long, int, void *);
int setuse32(struct thread *, struct mount *, u_long, int, void *);
int getquota(struct thread *, struct mount *, u_long, int, void *);
int setquota(struct thread *, struct mount *, u_long, int, void *);
int setuse(struct thread *, struct mount *, u_long, int, void *);
int getquotasize(struct thread *, struct mount *, u_long, int, void *);
vfs_quotactl_t ufs_quotactl;
#else /* !_KERNEL */
#include <sys/cdefs.h>
__BEGIN_DECLS
int quotactl(const char *, int, int, void *);
__END_DECLS
#endif /* _KERNEL */
#endif /* !_UFS_UFS_QUOTA_H_ */
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