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/errno.h>
  37 #include <linux/types.h>
  38
  39 #define __DQUOT_VERSION__       "dquot_6.6.0"
  40
  41 #define MAXQUOTAS 3
  42 #define USRQUOTA  0             /* element used for user quotas */
  43 #define GRPQUOTA  1             /* element used for group quotas */
  44 #define PRJQUOTA  2             /* element used for project quotas */
  45
  46 /*
  47  * Definitions for the default names of the quotas files.
  48  */
  49 #define INITQFNAMES { \
  50         "user",    /* USRQUOTA */ \
  51         "group",   /* GRPQUOTA */ \
  52         "project", /* PRJQUOTA */ \
  53         "undefined", \
  54 };
  55
  56 /*
  57  * Command definitions for the 'quotactl' system call.
  58  * The commands are broken into a main command defined below
  59  * and a subcommand that is used to convey the type of
  60  * quota that is being manipulated (see above).
  61  */
  62 #define SUBCMDMASK  0x00ff
  63 #define SUBCMDSHIFT 8
  64 #define QCMD(cmd, type)  (((cmd) << SUBCMDSHIFT) | ((type) & SUBCMDMASK))
  65
  66 #define Q_SYNC     0x800001     /* sync disk copy of a filesystems quotas */
  67 #define Q_QUOTAON  0x800002     /* turn quotas on */
  68 #define Q_QUOTAOFF 0x800003     /* turn quotas off */
  69 #define Q_GETFMT   0x800004     /* get quota format used on given filesystem */
  70 #define Q_GETINFO  0x800005     /* get information about quota files */
  71 #define Q_SETINFO  0x800006     /* set information about quota files */
  72 #define Q_GETQUOTA 0x800007     /* get user quota structure */
  73 #define Q_SETQUOTA 0x800008     /* set user quota structure */
  74 #define Q_GETNEXTQUOTA 0x800009 /* get disk limits and usage >= ID */
  75
  76 /* Quota format type IDs */
  77 #define QFMT_VFS_OLD 1
  78 #define QFMT_VFS_V0 2
  79 #define QFMT_OCFS2 3
  80 #define QFMT_VFS_V1 4
  81
  82 /* Size of block in which space limits are passed through the quota
  83  * interface */
  84 #define QIF_DQBLKSIZE_BITS 10
  85 #define QIF_DQBLKSIZE (1 << QIF_DQBLKSIZE_BITS)
  86
  87 /*
  88  * Quota structure used for communication with userspace via quotactl
  89  * Following flags are used to specify which fields are valid
  90  */
  91 enum {
  92         QIF_BLIMITS_B = 0,
  93         QIF_SPACE_B,
  94         QIF_ILIMITS_B,
  95         QIF_INODES_B,
  96         QIF_BTIME_B,
  97         QIF_ITIME_B,
  98 };
  99
 100 #define QIF_BLIMITS     (1 << QIF_BLIMITS_B)
 101 #define QIF_SPACE       (1 << QIF_SPACE_B)
 102 #define QIF_ILIMITS     (1 << QIF_ILIMITS_B)
 103 #define QIF_INODES      (1 << QIF_INODES_B)
 104 #define QIF_BTIME       (1 << QIF_BTIME_B)
 105 #define QIF_ITIME       (1 << QIF_ITIME_B)
 106 #define QIF_LIMITS      (QIF_BLIMITS | QIF_ILIMITS)
 107 #define QIF_USAGE       (QIF_SPACE | QIF_INODES)
 108 #define QIF_TIMES       (QIF_BTIME | QIF_ITIME)
 109 #define QIF_ALL         (QIF_LIMITS | QIF_USAGE | QIF_TIMES)
 110
 111 struct if_dqblk {
 112         __u64 dqb_bhardlimit;
 113         __u64 dqb_bsoftlimit;
 114         __u64 dqb_curspace;
 115         __u64 dqb_ihardlimit;
 116         __u64 dqb_isoftlimit;
 117         __u64 dqb_curinodes;
 118         __u64 dqb_btime;
 119         __u64 dqb_itime;
 120         __u32 dqb_valid;
 121 };
 122
 123 struct if_nextdqblk {
 124         __u64 dqb_bhardlimit;
 125         __u64 dqb_bsoftlimit;
 126         __u64 dqb_curspace;
 127         __u64 dqb_ihardlimit;
 128         __u64 dqb_isoftlimit;
 129         __u64 dqb_curinodes;
 130         __u64 dqb_btime;
 131         __u64 dqb_itime;
 132         __u32 dqb_valid;
 133         __u32 dqb_id;
 134 };
 135
 136 /*
 137  * Structure used for setting quota information about file via quotactl
 138  * Following flags are used to specify which fields are valid
 139  */
 140 #define IIF_BGRACE      1
 141 #define IIF_IGRACE      2
 142 #define IIF_FLAGS       4
 143 #define IIF_ALL         (IIF_BGRACE | IIF_IGRACE | IIF_FLAGS)
 144
 145 enum {
 146         DQF_ROOT_SQUASH_B = 0,
 147         DQF_SYS_FILE_B = 16,
 148         /* Kernel internal flags invisible to userspace */
 149         DQF_PRIVATE
 150 };
 151
 152 /* Root squash enabled (for v1 quota format) */
 153 #define DQF_ROOT_SQUASH (1 << DQF_ROOT_SQUASH_B)
 154 /* Quota stored in a system file */
 155 #define DQF_SYS_FILE    (1 << DQF_SYS_FILE_B)
 156
 157 struct if_dqinfo {
 158         __u64 dqi_bgrace;
 159         __u64 dqi_igrace;
 160         __u32 dqi_flags;        /* DFQ_* */
 161         __u32 dqi_valid;
 162 };
 163
 164 /*
 165  * Definitions for quota netlink interface
 166  */
 167 #define QUOTA_NL_NOWARN 0
 168 #define QUOTA_NL_IHARDWARN 1            /* Inode hardlimit reached */
 169 #define QUOTA_NL_ISOFTLONGWARN 2        /* Inode grace time expired */
 170 #define QUOTA_NL_ISOFTWARN 3            /* Inode softlimit reached */
 171 #define QUOTA_NL_BHARDWARN 4            /* Block hardlimit reached */
 172 #define QUOTA_NL_BSOFTLONGWARN 5        /* Block grace time expired */
 173 #define QUOTA_NL_BSOFTWARN 6            /* Block softlimit reached */
 174 #define QUOTA_NL_IHARDBELOW 7           /* Usage got below inode hardlimit */
 175 #define QUOTA_NL_ISOFTBELOW 8           /* Usage got below inode softlimit */
 176 #define QUOTA_NL_BHARDBELOW 9           /* Usage got below block hardlimit */
 177 #define QUOTA_NL_BSOFTBELOW 10          /* Usage got below block softlimit */
 178
 179 enum {
 180         QUOTA_NL_C_UNSPEC,
 181         QUOTA_NL_C_WARNING,
 182         __QUOTA_NL_C_MAX,
 183 };
 184 #define QUOTA_NL_C_MAX (__QUOTA_NL_C_MAX - 1)
 185
 186 enum {
 187         QUOTA_NL_A_UNSPEC,
 188         QUOTA_NL_A_QTYPE,
 189         QUOTA_NL_A_EXCESS_ID,
 190         QUOTA_NL_A_WARNING,
 191         QUOTA_NL_A_DEV_MAJOR,
 192         QUOTA_NL_A_DEV_MINOR,
 193         QUOTA_NL_A_CAUSED_ID,
 194         QUOTA_NL_A_PAD,
 195         __QUOTA_NL_A_MAX,
 196 };
 197 #define QUOTA_NL_A_MAX (__QUOTA_NL_A_MAX - 1)
 198
 199
 200 #endif /* _UAPI_LINUX_QUOTA_ */