1c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 2c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Copyright (c) 1982, 1986 Regents of the University of California. 3c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * All rights reserved. 4c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 5c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * This code is derived from software contributed to Berkeley by 6c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Robert Elz at The University of Melbourne. 7c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 8c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Redistribution and use in source and binary forms, with or without 9c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * modification, are permitted provided that the following conditions 10c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * are met: 11c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 1. Redistributions of source code must retain the above copyright 12c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * notice, this list of conditions and the following disclaimer. 13c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 2. Redistributions in binary form must reproduce the above copyright 14c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * notice, this list of conditions and the following disclaimer in the 15c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * documentation and/or other materials provided with the distribution. 16c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 3. Neither the name of the University nor the names of its contributors 17c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * may be used to endorse or promote products derived from this software 18c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * without specific prior written permission. 19c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 20c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * SUCH DAMAGE. 31c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 32c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Version: $Id: quota.h,v 2.0 1996/11/17 16:48:14 mvw Exp mvw $ 33c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 34c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 35c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifndef _LINUX_QUOTA_ 36c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define _LINUX_QUOTA_ 37c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 38c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <linux/errno.h> 39c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <linux/types.h> 40c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 41c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define __DQUOT_VERSION__ "dquot_6.5.1" 42c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define __DQUOT_NUM_VERSION__ 6*10000+5*100+1 43c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 44c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querutypedef __kernel_uid32_t qid_t; /* Type in which we store ids in memory */ 45c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querutypedef __u64 qsize_t; /* Type in which we store sizes */ 46c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 47c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern spinlock_t dq_data_lock; 48c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 49c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* Size of blocks in which are counted size limits */ 50c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define QUOTABLOCK_BITS 10 51c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define QUOTABLOCK_SIZE (1 << QUOTABLOCK_BITS) 52c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 53c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* Conversion routines from and to quota blocks */ 54c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define qb2kb(x) ((x) << (QUOTABLOCK_BITS-10)) 55c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define kb2qb(x) ((x) >> (QUOTABLOCK_BITS-10)) 56c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define toqb(x) (((x) + QUOTABLOCK_SIZE - 1) >> QUOTABLOCK_BITS) 57c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 58c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define MAXQUOTAS 2 59c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define USRQUOTA 0 /* element used for user quotas */ 60c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define GRPQUOTA 1 /* element used for group quotas */ 61c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 62c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 63c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Definitions for the default names of the quotas files. 64c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 65c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define INITQFNAMES { \ 66c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru "user", /* USRQUOTA */ \ 67c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru "group", /* GRPQUOTA */ \ 68c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru "undefined", \ 69c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 70c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 71c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 72c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Command definitions for the 'quotactl' system call. 73c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * The commands are broken into a main command defined below 74c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * and a subcommand that is used to convey the type of 75c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * quota that is being manipulated (see above). 76c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 77c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define SUBCMDMASK 0x00ff 78c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define SUBCMDSHIFT 8 79c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define QCMD(cmd, type) (((cmd) << SUBCMDSHIFT) | ((type) & SUBCMDMASK)) 80c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 81c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define Q_SYNC 0x800001 /* sync disk copy of a filesystems quotas */ 82c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define Q_QUOTAON 0x800002 /* turn quotas on */ 83c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define Q_QUOTAOFF 0x800003 /* turn quotas off */ 84c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define Q_GETFMT 0x800004 /* get quota format used on given filesystem */ 85c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define Q_GETINFO 0x800005 /* get information about quota files */ 86c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define Q_SETINFO 0x800006 /* set information about quota files */ 87c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define Q_GETQUOTA 0x800007 /* get user quota structure */ 88c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define Q_SETQUOTA 0x800008 /* set user quota structure */ 89c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 90c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 91c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Quota structure used for communication with userspace via quotactl 92c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Following flags are used to specify which fields are valid 93c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 94c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define QIF_BLIMITS 1 95c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define QIF_SPACE 2 96c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define QIF_ILIMITS 4 97c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define QIF_INODES 8 98c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define QIF_BTIME 16 99c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define QIF_ITIME 32 100c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define QIF_LIMITS (QIF_BLIMITS | QIF_ILIMITS) 101c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define QIF_USAGE (QIF_SPACE | QIF_INODES) 102c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define QIF_TIMES (QIF_BTIME | QIF_ITIME) 103c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define QIF_ALL (QIF_LIMITS | QIF_USAGE | QIF_TIMES) 104c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 105c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct if_dqblk { 106c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __u64 dqb_bhardlimit; 107c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __u64 dqb_bsoftlimit; 108c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __u64 dqb_curspace; 109c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __u64 dqb_ihardlimit; 110c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __u64 dqb_isoftlimit; 111c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __u64 dqb_curinodes; 112c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __u64 dqb_btime; 113c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __u64 dqb_itime; 114c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __u32 dqb_valid; 115c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 116c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 117c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 118c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Structure used for setting quota information about file via quotactl 119c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Following flags are used to specify which fields are valid 120c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 121c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IIF_BGRACE 1 122c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IIF_IGRACE 2 123c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IIF_FLAGS 4 124c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IIF_ALL (IIF_BGRACE | IIF_IGRACE | IIF_FLAGS) 125c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 126c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct if_dqinfo { 127c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __u64 dqi_bgrace; 128c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __u64 dqi_igrace; 129c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __u32 dqi_flags; 130c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __u32 dqi_valid; 131c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 132c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 133c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifdef __KERNEL__ 134c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <linux/spinlock.h> 135c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <linux/mutex.h> 136c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 137c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <linux/dqblk_xfs.h> 138c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <linux/dqblk_v1.h> 139c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <linux/dqblk_v2.h> 140c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 141c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* Maximal numbers of writes for quota operation (insert/delete/update) 142c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * (over VFS all formats) */ 143c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define DQUOT_INIT_ALLOC max(V1_INIT_ALLOC, V2_INIT_ALLOC) 144c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define DQUOT_INIT_REWRITE max(V1_INIT_REWRITE, V2_INIT_REWRITE) 145c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define DQUOT_DEL_ALLOC max(V1_DEL_ALLOC, V2_DEL_ALLOC) 146c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define DQUOT_DEL_REWRITE max(V1_DEL_REWRITE, V2_DEL_REWRITE) 147c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 148c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 149c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Data for one user/group kept in memory 150c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 151c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct mem_dqblk { 152c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __u32 dqb_bhardlimit; /* absolute limit on disk blks alloc */ 153c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __u32 dqb_bsoftlimit; /* preferred limit on disk blks */ 154c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru qsize_t dqb_curspace; /* current used space */ 155c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __u32 dqb_ihardlimit; /* absolute limit on allocated inodes */ 156c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __u32 dqb_isoftlimit; /* preferred inode limit */ 157c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __u32 dqb_curinodes; /* current # allocated inodes */ 158c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru time_t dqb_btime; /* time limit for excessive disk use */ 159c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru time_t dqb_itime; /* time limit for excessive inode use */ 160c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 161c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 162c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 163c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Data for one quotafile kept in memory 164c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 165c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct quota_format_type; 166c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 167c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct mem_dqinfo { 168c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct quota_format_type *dqi_format; 169c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct list_head dqi_dirty_list; /* List of dirty dquots */ 170c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long dqi_flags; 171c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned int dqi_bgrace; 172c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned int dqi_igrace; 173c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru union { 174c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct v1_mem_dqinfo v1_i; 175c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct v2_mem_dqinfo v2_i; 176c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru } u; 177c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 178c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 179c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct super_block; 180c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 181c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define DQF_MASK 0xffff /* Mask for format specific flags */ 182c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define DQF_INFO_DIRTY_B 16 183c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define DQF_INFO_DIRTY (1 << DQF_INFO_DIRTY_B) /* Is info dirty? */ 184c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 185c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern void mark_info_dirty(struct super_block *sb, int type); 186c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define info_dirty(info) test_bit(DQF_INFO_DIRTY_B, &(info)->dqi_flags) 187c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define info_any_dquot_dirty(info) (!list_empty(&(info)->dqi_dirty_list)) 188c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define info_any_dirty(info) (info_dirty(info) || info_any_dquot_dirty(info)) 189c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 190c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define sb_dqopt(sb) (&(sb)->s_dquot) 191c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define sb_dqinfo(sb, type) (sb_dqopt(sb)->info+(type)) 192c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 193c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct dqstats { 194c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int lookups; 195c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int drops; 196c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int reads; 197c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int writes; 198c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int cache_hits; 199c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int allocated_dquots; 200c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int free_dquots; 201c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int syncs; 202c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 203c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 204c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern struct dqstats dqstats; 205c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 206c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define DQ_MOD_B 0 /* dquot modified since read */ 207c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define DQ_BLKS_B 1 /* uid/gid has been warned about blk limit */ 208c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define DQ_INODES_B 2 /* uid/gid has been warned about inode limit */ 209c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define DQ_FAKE_B 3 /* no limits only usage */ 210c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define DQ_READ_B 4 /* dquot was read into memory */ 211c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define DQ_ACTIVE_B 5 /* dquot is active (dquot_release not called) */ 212c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 213c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct dquot { 214c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct hlist_node dq_hash; /* Hash list in memory */ 215c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct list_head dq_inuse; /* List of all quotas */ 216c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct list_head dq_free; /* Free list element */ 217c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct list_head dq_dirty; /* List of dirty dquots */ 218c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct mutex dq_lock; /* dquot IO lock */ 219c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru atomic_t dq_count; /* Use count */ 220c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru wait_queue_head_t dq_wait_unused; /* Wait queue for dquot to become unused */ 221c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct super_block *dq_sb; /* superblock this applies to */ 222c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned int dq_id; /* ID this applies to (uid, gid) */ 223c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru loff_t dq_off; /* Offset of dquot on disk */ 224c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long dq_flags; /* See DQ_* */ 225c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru short dq_type; /* Type of quota */ 226c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct mem_dqblk dq_dqb; /* Diskquota usage */ 227c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 228c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 229c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define NODQUOT (struct dquot *)NULL 230c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 231c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define QUOTA_OK 0 232c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define NO_QUOTA 1 233c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 234c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* Operations which must be implemented by each quota format */ 235c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct quota_format_ops { 236c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*check_quota_file)(struct super_block *sb, int type); /* Detect whether file is in our format */ 237c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*read_file_info)(struct super_block *sb, int type); /* Read main info about file - called on quotaon() */ 238c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*write_file_info)(struct super_block *sb, int type); /* Write main info about file */ 239c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*free_file_info)(struct super_block *sb, int type); /* Called on quotaoff() */ 240c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*read_dqblk)(struct dquot *dquot); /* Read structure for one user */ 241c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*commit_dqblk)(struct dquot *dquot); /* Write structure for one user */ 242c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*release_dqblk)(struct dquot *dquot); /* Called when last reference to dquot is being dropped */ 243c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 244c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 245c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* Operations working with dquots */ 246c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct dquot_operations { 247c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*initialize) (struct inode *, int); 248c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*drop) (struct inode *); 249c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*alloc_space) (struct inode *, qsize_t, int); 250c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*alloc_inode) (const struct inode *, unsigned long); 251c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*free_space) (struct inode *, qsize_t); 252c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*free_inode) (const struct inode *, unsigned long); 253c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*transfer) (struct inode *, struct iattr *); 254c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*write_dquot) (struct dquot *); /* Ordinary dquot write */ 255c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*acquire_dquot) (struct dquot *); /* Quota is going to be created on disk */ 256c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*release_dquot) (struct dquot *); /* Quota is going to be deleted from disk */ 257c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*mark_dirty) (struct dquot *); /* Dquot is marked dirty */ 258c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*write_info) (struct super_block *, int); /* Write of quota "superblock" */ 259c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 260c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 261c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* Operations handling requests from userspace */ 262c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct quotactl_ops { 263c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*quota_on)(struct super_block *, int, int, char *); 264c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*quota_off)(struct super_block *, int); 265c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*quota_sync)(struct super_block *, int); 266c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*get_info)(struct super_block *, int, struct if_dqinfo *); 267c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*set_info)(struct super_block *, int, struct if_dqinfo *); 268c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*get_dqblk)(struct super_block *, int, qid_t, struct if_dqblk *); 269c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*set_dqblk)(struct super_block *, int, qid_t, struct if_dqblk *); 270c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*get_xstate)(struct super_block *, struct fs_quota_stat *); 271c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*set_xstate)(struct super_block *, unsigned int, int); 272c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*get_xquota)(struct super_block *, int, qid_t, struct fs_disk_quota *); 273c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*set_xquota)(struct super_block *, int, qid_t, struct fs_disk_quota *); 274c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 275c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 276c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct quota_format_type { 277c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int qf_fmt_id; /* Quota format id */ 278c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct quota_format_ops *qf_ops; /* Operations of format */ 279c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct module *qf_owner; /* Module implementing quota format */ 280c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct quota_format_type *qf_next; 281c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 282c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 283c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define DQUOT_USR_ENABLED 0x01 /* User diskquotas enabled */ 284c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define DQUOT_GRP_ENABLED 0x02 /* Group diskquotas enabled */ 285c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 286c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct quota_info { 287c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned int flags; /* Flags for diskquotas on this device */ 288c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct mutex dqio_mutex; /* lock device while I/O in progress */ 289c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct mutex dqonoff_mutex; /* Serialize quotaon & quotaoff */ 290c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct rw_semaphore dqptr_sem; /* serialize ops using quota_info struct, pointers from inode to dquots */ 291c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct inode *files[MAXQUOTAS]; /* inodes of quotafiles */ 292c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct mem_dqinfo info[MAXQUOTAS]; /* Information for each quota type */ 293c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct quota_format_ops *ops[MAXQUOTAS]; /* Operations for each type */ 294c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 295c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 296c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* Inline would be better but we need to dereference super_block which is not defined yet */ 297c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruint mark_dquot_dirty(struct dquot *dquot); 298c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 299c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define dquot_dirty(dquot) test_bit(DQ_MOD_B, &(dquot)->dq_flags) 300c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 301c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define sb_has_quota_enabled(sb, type) ((type)==USRQUOTA ? \ 302c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru (sb_dqopt(sb)->flags & DQUOT_USR_ENABLED) : (sb_dqopt(sb)->flags & DQUOT_GRP_ENABLED)) 303c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 304c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define sb_any_quota_enabled(sb) (sb_has_quota_enabled(sb, USRQUOTA) | \ 305c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru sb_has_quota_enabled(sb, GRPQUOTA)) 306c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 307c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruint register_quota_format(struct quota_format_type *fmt); 308c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid unregister_quota_format(struct quota_format_type *fmt); 309c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 310c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct quota_module_name { 311c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int qm_fmt_id; 312c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru char *qm_mod_name; 313c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 314c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 315c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define INIT_QUOTA_MODULE_NAMES {\ 316c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru {QFMT_VFS_OLD, "quota_v1"},\ 317c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru {QFMT_VFS_V0, "quota_v2"},\ 318c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru {0, NULL}} 319c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 320c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#else 321c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 322c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru# /* nodep */ include <sys/cdefs.h> 323c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 324c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru__BEGIN_DECLS 325c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querulong quotactl __P ((unsigned int, const char *, int, caddr_t)); 326c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru__END_DECLS 327c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 328c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif /* __KERNEL__ */ 329c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif /* _QUOTA_ */ 330