1 /* This just represents the non-kernel parts of <linux/quota.h>. 2 * 3 * here's the corresponding copyright: 4 * Copyright (c) 1982, 1986 Regents of the University of California. 5 * 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 * 4. 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 35 #ifndef _SYS_QUOTA_H 36 #define _SYS_QUOTA_H 1 37 38 #include <features.h> 39 #include <sys/types.h> 40 41 /* 42 * Select between different incompatible quota versions. 43 * Default to the version used by Linux kernel version 2.4.22 44 * or later. */ 45 #ifndef _LINUX_QUOTA_VERSION 46 # define _LINUX_QUOTA_VERSION 2 47 #endif 48 49 /* 50 * Convert diskblocks to blocks and the other way around. 51 * currently only to fool the BSD source. :-) 52 */ 53 #define dbtob(num) ((num) << 10) 54 #define btodb(num) ((num) >> 10) 55 56 /* 57 * Convert count of filesystem blocks to diskquota blocks, meant 58 * for filesystems where i_blksize != BLOCK_SIZE 59 */ 60 #define fs_to_dq_blocks(num, blksize) (((num) * (blksize)) / BLOCK_SIZE) 61 62 /* 63 * Definitions for disk quotas imposed on the average user 64 * (big brother finally hits Linux). 65 * 66 * The following constants define the amount of time given a user 67 * before the soft limits are treated as hard limits (usually resulting 68 * in an allocation failure). The timer is started when the user crosses 69 * their soft limit, it is reset when they go below their soft limit. 70 */ 71 #define MAX_IQ_TIME 604800 /* (7*24*60*60) 1 week */ 72 #define MAX_DQ_TIME 604800 /* (7*24*60*60) 1 week */ 73 74 #define MAXQUOTAS 2 75 #define USRQUOTA 0 /* element used for user quotas */ 76 #define GRPQUOTA 1 /* element used for group quotas */ 77 78 /* 79 * Definitions for the default names of the quotas files. 80 */ 81 #define INITQFNAMES { \ 82 "user", /* USRQUOTA */ \ 83 "group", /* GRPQUOTA */ \ 84 "undefined", \ 85 }; 86 87 #define QUOTAFILENAME "quota" 88 #define QUOTAGROUP "staff" 89 90 #define NR_DQHASH 43 /* Just an arbitrary number any suggestions ? */ 91 #define NR_DQUOTS 256 /* Number of quotas active at one time */ 92 93 /* 94 * Command definitions for the 'quotactl' system call. 95 * The commands are broken into a main command defined below 96 * and a subcommand that is used to convey the type of 97 * quota that is being manipulated (see above). 98 */ 99 #define SUBCMDMASK 0x00ff 100 #define SUBCMDSHIFT 8 101 #define QCMD(cmd, type) (((cmd) << SUBCMDSHIFT) | ((type) & SUBCMDMASK)) 102 103 #if _LINUX_QUOTA_VERSION < 2 104 # define Q_QUOTAON 0x0100 /* enable quotas */ 105 # define Q_QUOTAOFF 0x0200 /* disable quotas */ 106 # define Q_GETQUOTA 0x0300 /* get limits and usage */ 107 # define Q_SETQUOTA 0x0400 /* set limits and usage */ 108 # define Q_SETUSE 0x0500 /* set usage */ 109 # define Q_SYNC 0x0600 /* sync disk copy of a filesystems quotas */ 110 # define Q_SETQLIM 0x0700 /* set limits */ 111 # define Q_GETSTATS 0x0800 /* get collected stats */ 112 # define Q_RSQUASH 0x1000 /* set root_squash option */ 113 #else 114 # define Q_SYNC 0x800001 /* sync disk copy of a filesystems quotas */ 115 # define Q_QUOTAON 0x800002 /* turn quotas on */ 116 # define Q_QUOTAOFF 0x800003 /* turn quotas off */ 117 # define Q_GETFMT 0x800004 /* get quota format used on given filesystem */ 118 # define Q_GETINFO 0x800005 /* get information about quota files */ 119 # define Q_SETINFO 0x800006 /* set information about quota files */ 120 # define Q_GETQUOTA 0x800007 /* get user quota structure */ 121 # define Q_SETQUOTA 0x800008 /* set user quota structure */ 122 #endif 123 124 /* 125 * The following structure defines the format of the disk quota file 126 * (as it appears on disk) - the file is an array of these structures 127 * indexed by user or group number. 128 */ 129 #if _LINUX_QUOTA_VERSION < 2 130 struct dqblk 131 { 132 u_int32_t dqb_bhardlimit; /* absolute limit on disk blks alloc */ 133 u_int32_t dqb_bsoftlimit; /* preferred limit on disk blks */ 134 u_int32_t dqb_curblocks; /* current block count */ 135 u_int32_t dqb_ihardlimit; /* maximum # allocated inodes */ 136 u_int32_t dqb_isoftlimit; /* preferred inode limit */ 137 u_int32_t dqb_curinodes; /* current # allocated inodes */ 138 time_t dqb_btime; /* time limit for excessive disk use */ 139 time_t dqb_itime; /* time limit for excessive files */ 140 }; 141 #else 142 143 /* Flags that indicate which fields in dqblk structure are valid. */ 144 #define QIF_BLIMITS 1 145 #define QIF_SPACE 2 146 #define QIF_ILIMITS 4 147 #define QIF_INODES 8 148 #define QIF_BTIME 16 149 #define QIF_ITIME 32 150 #define QIF_LIMITS (QIF_BLIMITS | QIF_ILIMITS) 151 #define QIF_USAGE (QIF_SPACE | QIF_INODES) 152 #define QIF_TIMES (QIF_BTIME | QIF_ITIME) 153 #define QIF_ALL (QIF_LIMITS | QIF_USAGE | QIF_TIMES) 154 155 struct dqblk 156 { 157 u_int64_t dqb_bhardlimit; /* absolute limit on disk quota blocks alloc */ 158 u_int64_t dqb_bsoftlimit; /* preferred limit on disk quota blocks */ 159 u_int64_t dqb_curspace; /* current quota block count */ 160 u_int64_t dqb_ihardlimit; /* maximum # allocated inodes */ 161 u_int64_t dqb_isoftlimit; /* preferred inode limit */ 162 u_int64_t dqb_curinodes; /* current # allocated inodes */ 163 u_int64_t dqb_btime; /* time limit for excessive disk use */ 164 u_int64_t dqb_itime; /* time limit for excessive files */ 165 u_int32_t dqb_valid; /* bitmask of QIF_* constants */ 166 }; 167 #endif 168 169 /* 170 * Shorthand notation. 171 */ 172 #define dq_bhardlimit dq_dqb.dqb_bhardlimit 173 #define dq_bsoftlimit dq_dqb.dqb_bsoftlimit 174 #if _LINUX_QUOTA_VERSION < 2 175 # define dq_curblocks dq_dqb.dqb_curblocks 176 #else 177 # define dq_curspace dq_dqb.dqb_curspace 178 # define dq_valid dq_dqb.dqb_valid 179 #endif 180 #define dq_ihardlimit dq_dqb.dqb_ihardlimit 181 #define dq_isoftlimit dq_dqb.dqb_isoftlimit 182 #define dq_curinodes dq_dqb.dqb_curinodes 183 #define dq_btime dq_dqb.dqb_btime 184 #define dq_itime dq_dqb.dqb_itime 185 186 #define dqoff(UID) ((loff_t)((UID) * sizeof (struct dqblk))) 187 188 #if _LINUX_QUOTA_VERSION < 2 189 struct dqstats 190 { 191 u_int32_t lookups; 192 u_int32_t drops; 193 u_int32_t reads; 194 u_int32_t writes; 195 u_int32_t cache_hits; 196 u_int32_t pages_allocated; 197 u_int32_t allocated_dquots; 198 u_int32_t free_dquots; 199 u_int32_t syncs; 200 }; 201 #else 202 203 /* Flags that indicate which fields in dqinfo structure are valid. */ 204 # define IIF_BGRACE 1 205 # define IIF_IGRACE 2 206 # define IIF_FLAGS 4 207 # define IIF_ALL (IIF_BGRACE | IIF_IGRACE | IIF_FLAGS) 208 209 struct dqinfo 210 { 211 u_int64_t dqi_bgrace; 212 u_int64_t dqi_igrace; 213 u_int32_t dqi_flags; 214 u_int32_t dqi_valid; 215 }; 216 #endif 217 218 __BEGIN_DECLS 219 220 extern int quotactl (int __cmd, const char *__special, int __id, 221 caddr_t __addr) __THROW; 222 223 __END_DECLS 224 225 #endif /* sys/quota.h */ 226