1 /* $NetBSD: quota.h,v 1.25 2007/07/10 09:50:08 hannken Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Robert Elz at The University of Melbourne. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)quota.h 8.3 (Berkeley) 8/19/94 35 */ 36 37 #ifndef _UFS_UFS_QUOTA_H_ 38 #define _UFS_UFS_QUOTA_H_ 39 40 /* 41 * Definitions for disk quotas imposed on the average user 42 * (big brother finally hits UNIX). 43 * 44 * The following constants define the amount of time given a user before the 45 * soft limits are treated as hard limits (usually resulting in an allocation 46 * failure). The timer is started when the user crosses their soft limit, it 47 * is reset when they go below their soft limit. 48 */ 49 #define MAX_IQ_TIME (7*24*60*60) /* seconds in 1 week */ 50 #define MAX_DQ_TIME (7*24*60*60) /* seconds in 1 week */ 51 52 /* 53 * The following constants define the usage of the quota file array in the 54 * ufsmount structure and dquot array in the inode structure. The semantics 55 * of the elements of these arrays are defined in the routine getinoquota; 56 * the remainder of the quota code treats them generically and need not be 57 * inspected when changing the size of the array. 58 */ 59 #define MAXQUOTAS 2 60 #define USRQUOTA 0 /* element used for user quotas */ 61 #define GRPQUOTA 1 /* element used for group quotas */ 62 63 /* 64 * Definitions for the default names of the quotas files. 65 */ 66 #define INITQFNAMES { \ 67 "user", /* USRQUOTA */ \ 68 "group", /* GRPQUOTA */ \ 69 "undefined", \ 70 } 71 #define QUOTAFILENAME "quota" 72 #define QUOTAGROUP "operator" 73 74 /* 75 * Command definitions for the 'quotactl' system call. The commands are 76 * broken into a main command defined below and a subcommand that is used 77 * to convey the type of quota that is being manipulated (see above). 78 */ 79 #define SUBCMDMASK 0x00ff 80 #define SUBCMDSHIFT 8 81 #define QCMD(cmd, type) (((cmd) << SUBCMDSHIFT) | ((type) & SUBCMDMASK)) 82 83 #define Q_QUOTAON 0x0100 /* enable quotas */ 84 #define Q_QUOTAOFF 0x0200 /* disable quotas */ 85 #define Q_GETQUOTA 0x0300 /* get limits and usage */ 86 #define Q_SETQUOTA 0x0400 /* set limits and usage */ 87 #define Q_SETUSE 0x0500 /* set usage */ 88 #define Q_SYNC 0x0600 /* sync disk copy of a filesystems quotas */ 89 90 /* 91 * The following structure defines the format of the disk quota file 92 * (as it appears on disk) - the file is an array of these structures 93 * indexed by user or group number. The setquota system call establishes 94 * the vnode for each quota file (a pointer is retained in the ufsmount 95 * structure). 96 */ 97 struct dqblk { 98 u_int32_t dqb_bhardlimit; /* absolute limit on disk blks alloc */ 99 u_int32_t dqb_bsoftlimit; /* preferred limit on disk blks */ 100 u_int32_t dqb_curblocks; /* current block count */ 101 u_int32_t dqb_ihardlimit; /* maximum # allocated inodes + 1 */ 102 u_int32_t dqb_isoftlimit; /* preferred inode limit */ 103 u_int32_t dqb_curinodes; /* current # allocated inodes */ 104 int32_t dqb_btime; /* time limit for excessive disk use */ 105 int32_t dqb_itime; /* time limit for excessive files */ 106 }; 107 108 #ifdef _KERNEL 109 110 #include <sys/cdefs.h> 111 112 __BEGIN_DECLS 113 void dqinit(void); 114 void dqreinit(void); 115 void dqdone(void); 116 __END_DECLS 117 #else 118 __BEGIN_DECLS 119 int quotactl(const char *, int , int, void *); 120 __END_DECLS 121 #endif /* _KERNEL */ 122 123 #endif /* !_UFS_UFS_QUOTA_H_ */ 124