LXR linux/include/uapi/linux/quota.h

   1/*
   2 * Copyright (c) 1982, 1986 Regents of the University of California.
   3 * All rights reserved.
   4 *
   5 * This code is derived from software contributed to Berkeley by
   6 * Robert Elz at The University of Melbourne.
   7 *
   8 * Redistribution and use in source and binary forms, with or without
   9 * modification, are permitted provided that the following conditions
  10 * are met:
  11 * 1. Redistributions of source code must retain the above copyright
  12 *    notice, this list of conditions and the following disclaimer.
  13 * 2. Redistributions in binary form must reproduce the above copyright
  14 *    notice, this list of conditions and the following disclaimer in the
  15 *    documentation and/or other materials provided with the distribution.
  16 * 3. Neither the name of the University nor the names of its contributors
  17 *    may be used to endorse or promote products derived from this software
  18 *    without specific prior written permission.
  19 *
  20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30 * SUCH DAMAGE.
  31 */
  32
  33#ifndef _UAPI_LINUX_QUOTA_
  34#define _UAPI_LINUX_QUOTA_
  35
  36#include <linux/types.h>
  37
  38#define __DQUOT_VERSION__       "dquot_6.6.0"
  39
  40#define MAXQUOTAS 3
  41#define USRQUOTA  0             /* element used for user quotas */
  42#define GRPQUOTA  1             /* element used for group quotas */
  43#define PRJQUOTA  2             /* element used for project quotas */
  44
  45/*
  46 * Definitions for the default names of the quotas files.
  47 */
  48#define INITQFNAMES { \
  49        "user",    /* USRQUOTA */ \
  50        "group",   /* GRPQUOTA */ \
  51        "project", /* PRJQUOTA */ \
  52        "undefined", \
  53};
  54
  55/*
  56 * Command definitions for the 'quotactl' system call.
  57 * The commands are broken into a main command defined below
  58 * and a subcommand that is used to convey the type of
  59 * quota that is being manipulated (see above).
  60 */
  61#define SUBCMDMASK  0x00ff
  62#define SUBCMDSHIFT 8
  63#define QCMD(cmd, type)  (((cmd) << SUBCMDSHIFT) | ((type) & SUBCMDMASK))
  64
  65#define Q_SYNC     0x800001     /* sync disk copy of a filesystems quotas */
  66#define Q_QUOTAON  0x800002     /* turn quotas on */
  67#define Q_QUOTAOFF 0x800003     /* turn quotas off */
  68#define Q_GETFMT   0x800004     /* get quota format used on given filesystem */
  69#define Q_GETINFO  0x800005     /* get information about quota files */
  70#define Q_SETINFO  0x800006     /* set information about quota files */
  71#define Q_GETQUOTA 0x800007     /* get user quota structure */
  72#define Q_SETQUOTA 0x800008     /* set user quota structure */
  73#define Q_GETNEXTQUOTA 0x800009 /* get disk limits and usage >= ID */
  74
  75/* Quota format type IDs */
  76#define QFMT_VFS_OLD 1
  77#define QFMT_VFS_V0 2
  78#define QFMT_OCFS2 3
  79#define QFMT_VFS_V1 4
  80
  81/* Size of block in which space limits are passed through the quota
  82 * interface */
  83#define QIF_DQBLKSIZE_BITS 10
  84#define QIF_DQBLKSIZE (1 << QIF_DQBLKSIZE_BITS)
  85
  86/*
  87 * Quota structure used for communication with userspace via quotactl
  88 * Following flags are used to specify which fields are valid
  89 */
  90enum {
  91        QIF_BLIMITS_B = 0,
  92        QIF_SPACE_B,
  93        QIF_ILIMITS_B,
  94        QIF_INODES_B,
  95        QIF_BTIME_B,
  96        QIF_ITIME_B,
  97};
  98
  99#define QIF_BLIMITS     (1 << QIF_BLIMITS_B)
 100#define QIF_SPACE       (1 << QIF_SPACE_B)
 101#define QIF_ILIMITS     (1 << QIF_ILIMITS_B)
 102#define QIF_INODES      (1 << QIF_INODES_B)
 103#define QIF_BTIME       (1 << QIF_BTIME_B)
 104#define QIF_ITIME       (1 << QIF_ITIME_B)
 105#define QIF_LIMITS      (QIF_BLIMITS | QIF_ILIMITS)
 106#define QIF_USAGE       (QIF_SPACE | QIF_INODES)
 107#define QIF_TIMES       (QIF_BTIME | QIF_ITIME)
 108#define QIF_ALL         (QIF_LIMITS | QIF_USAGE | QIF_TIMES)
 109
 110struct if_dqblk {
 111        __u64 dqb_bhardlimit;
 112        __u64 dqb_bsoftlimit;
 113        __u64 dqb_curspace;
 114        __u64 dqb_ihardlimit;
 115        __u64 dqb_isoftlimit;
 116        __u64 dqb_curinodes;
 117        __u64 dqb_btime;
 118        __u64 dqb_itime;
 119        __u32 dqb_valid;
 120};
 121
 122struct if_nextdqblk {
 123        __u64 dqb_bhardlimit;
 124        __u64 dqb_bsoftlimit;
 125        __u64 dqb_curspace;
 126        __u64 dqb_ihardlimit;
 127        __u64 dqb_isoftlimit;
 128        __u64 dqb_curinodes;
 129        __u64 dqb_btime;
 130        __u64 dqb_itime;
 131        __u32 dqb_valid;
 132        __u32 dqb_id;
 133};
 134
 135/*
 136 * Structure used for setting quota information about file via quotactl
 137 * Following flags are used to specify which fields are valid
 138 */
 139#define IIF_BGRACE      1
 140#define IIF_IGRACE      2
 141#define IIF_FLAGS       4
 142#define IIF_ALL         (IIF_BGRACE | IIF_IGRACE | IIF_FLAGS)
 143
 144enum {
 145        DQF_ROOT_SQUASH_B = 0,
 146        DQF_SYS_FILE_B = 16,
 147        /* Kernel internal flags invisible to userspace */
 148        DQF_PRIVATE
 149};
 150
 151/* Root squash enabled (for v1 quota format) */
 152#define DQF_ROOT_SQUASH (1 << DQF_ROOT_SQUASH_B)
 153/* Quota stored in a system file */
 154#define DQF_SYS_FILE    (1 << DQF_SYS_FILE_B)
 155
 156struct if_dqinfo {
 157        __u64 dqi_bgrace;
 158        __u64 dqi_igrace;
 159        __u32 dqi_flags;        /* DFQ_* */
 160        __u32 dqi_valid;
 161};
 162
 163/*
 164 * Definitions for quota netlink interface
 165 */
 166#define QUOTA_NL_NOWARN 0
 167#define QUOTA_NL_IHARDWARN 1            /* Inode hardlimit reached */
 168#define QUOTA_NL_ISOFTLONGWARN 2        /* Inode grace time expired */
 169#define QUOTA_NL_ISOFTWARN 3            /* Inode softlimit reached */
 170#define QUOTA_NL_BHARDWARN 4            /* Block hardlimit reached */
 171#define QUOTA_NL_BSOFTLONGWARN 5        /* Block grace time expired */
 172#define QUOTA_NL_BSOFTWARN 6            /* Block softlimit reached */
 173#define QUOTA_NL_IHARDBELOW 7           /* Usage got below inode hardlimit */
 174#define QUOTA_NL_ISOFTBELOW 8           /* Usage got below inode softlimit */
 175#define QUOTA_NL_BHARDBELOW 9           /* Usage got below block hardlimit */
 176#define QUOTA_NL_BSOFTBELOW 10          /* Usage got below block softlimit */
 177
 178enum {
 179        QUOTA_NL_C_UNSPEC,
 180        QUOTA_NL_C_WARNING,
 181        __QUOTA_NL_C_MAX,
 182};
 183#define QUOTA_NL_C_MAX (__QUOTA_NL_C_MAX - 1)
 184
 185enum {
 186        QUOTA_NL_A_UNSPEC,
 187        QUOTA_NL_A_QTYPE,
 188        QUOTA_NL_A_EXCESS_ID,
 189        QUOTA_NL_A_WARNING,
 190        QUOTA_NL_A_DEV_MAJOR,
 191        QUOTA_NL_A_DEV_MINOR,
 192        QUOTA_NL_A_CAUSED_ID,
 193        QUOTA_NL_A_PAD,
 194        __QUOTA_NL_A_MAX,
 195};
 196#define QUOTA_NL_A_MAX (__QUOTA_NL_A_MAX - 1)
 197
 198
 199#endif /* _UAPI_LINUX_QUOTA_ */
 200