Home | History | Annotate | Download | only in linux 
      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_ */
    201