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Diffstat (limited to 'pfinet/linux-src/include/linux/quota.h')
| -rw-r--r-- | pfinet/linux-src/include/linux/quota.h | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/pfinet/linux-src/include/linux/quota.h b/pfinet/linux-src/include/linux/quota.h new file mode 100644 index 00000000..2c4a5bce --- /dev/null +++ b/pfinet/linux-src/include/linux/quota.h @@ -0,0 +1,209 @@ +/* + * 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. + * + * Version: $Id: quota.h,v 2.0 1996/11/17 16:48:14 mvw Exp mvw $ + */ + +#ifndef _LINUX_QUOTA_ +#define _LINUX_QUOTA_ + +#include <linux/errno.h> + +/* + * Convert diskblocks to blocks and the other way around. + */ +#define dbtob(num) (num << 10) +#define btodb(num) (num >> 10) + +/* + * Convert count of filesystem blocks to diskquota blocks, meant + * for filesystems where i_blksize != BLOCK_SIZE + */ +#define fs_to_dq_blocks(num, blksize) (((num) * (blksize)) / BLOCK_SIZE) + +/* + * Definitions for disk quotas imposed on the average user + * (big brother finally hits Linux). + * + * 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 604800 /* (7*24*60*60) 1 week */ +#define MAX_DQ_TIME 604800 /* (7*24*60*60) 1 week */ + +#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 "staff" + +extern int nr_dquots, nr_free_dquots; +extern int max_dquots; +extern int dquot_root_squash; + +#define NR_DQHASH 43 /* Just an arbitrary number */ +#define NR_DQUOTS 1024 /* Maximum number of quotas active at one time (Configurable from /proc/sys/fs) */ + +/* + * 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 */ +#define Q_SETQLIM 0x0700 /* set limits */ +#define Q_GETSTATS 0x0800 /* get collected stats */ +#define Q_RSQUASH 0x1000 /* set root_squash option */ + +/* + * 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. + */ +struct dqblk { + __u32 dqb_bhardlimit; /* absolute limit on disk blks alloc */ + __u32 dqb_bsoftlimit; /* preferred limit on disk blks */ + __u32 dqb_curblocks; /* current block count */ + __u32 dqb_ihardlimit; /* absolute limit on allocated inodes */ + __u32 dqb_isoftlimit; /* preferred inode limit */ + __u32 dqb_curinodes; /* current # allocated inodes */ + time_t dqb_btime; /* time limit for excessive disk use */ + time_t dqb_itime; /* time limit for excessive inode use */ +}; + +/* + * 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 + +#define dqoff(UID) ((loff_t)((UID) * sizeof (struct dqblk))) + +struct dqstats { + __u32 lookups; + __u32 drops; + __u32 reads; + __u32 writes; + __u32 cache_hits; + __u32 allocated_dquots; + __u32 free_dquots; + __u32 syncs; +}; + +#ifdef __KERNEL__ + +/* + * Maximum length of a message generated in the quota system, + * that needs to be kicked onto the tty. + */ +#define MAX_QUOTA_MESSAGE 75 + +#define DQ_LOCKED 0x01 /* locked for update */ +#define DQ_WANT 0x02 /* wanted for update */ +#define DQ_MOD 0x04 /* dquot modified since read */ +#define DQ_BLKS 0x10 /* uid/gid has been warned about blk limit */ +#define DQ_INODES 0x20 /* uid/gid has been warned about inode limit */ +#define DQ_FAKE 0x40 /* no limits only usage */ + +struct dquot { + struct dquot *dq_next; /* Pointer to next dquot */ + struct dquot **dq_pprev; + struct list_head dq_free; /* free list element */ + struct dquot *dq_hash_next; /* Pointer to next in dquot_hash */ + struct dquot **dq_hash_pprev; /* Pointer to previous in dquot_hash */ + struct wait_queue *dq_wait; /* Pointer to waitqueue */ + int dq_count; /* Reference count */ + + /* fields after this point are cleared when invalidating */ + struct vfsmount *dq_mnt; /* VFS_mount_point this applies to */ + unsigned int dq_id; /* ID this applies to (uid, gid) */ + kdev_t dq_dev; /* Device this applies to */ + short dq_type; /* Type of quota */ + short dq_flags; /* See DQ_* */ + unsigned long dq_referenced; /* Number of times this dquot was + referenced during its lifetime */ + struct dqblk dq_dqb; /* Diskquota usage */ +}; + +#define NODQUOT (struct dquot *)NULL + +/* + * Flags used for set_dqblk. + */ +#define QUOTA_SYSCALL 0x01 +#define SET_QUOTA 0x02 +#define SET_USE 0x04 +#define SET_QLIMIT 0x08 + +#define QUOTA_OK 0 +#define NO_QUOTA 1 + +#else + +# /* nodep */ include <sys/cdefs.h> + +__BEGIN_DECLS +int quotactl __P ((int, const char *, int, caddr_t)); +__END_DECLS + +#endif /* __KERNEL__ */ +#endif /* _QUOTA_ */ |