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편집 파일: dqblk_xfs.h

/* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */ /* * Copyright (c) 1995-2001,2004 Silicon Graphics, Inc. All Rights Reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public License * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesset General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef _LINUX_DQBLK_XFS_H #define _LINUX_DQBLK_XFS_H #include <linux/types.h> /* * Disk quota - quotactl(2) commands for the XFS Quota Manager (XQM). */ #define XQM_CMD(x) (('X'<<8)+(x)) /* note: forms first QCMD argument */ #define XQM_COMMAND(x) (((x) & (0xff<<8)) == ('X'<<8)) /* test if for XFS */ #define XQM_USRQUOTA 0 /* system call user quota type */ #define XQM_GRPQUOTA 1 /* system call group quota type */ #define XQM_PRJQUOTA 2 /* system call project quota type */ #define XQM_MAXQUOTAS 3 #define Q_XQUOTAON XQM_CMD(1) /* enable accounting/enforcement */ #define Q_XQUOTAOFF XQM_CMD(2) /* disable accounting/enforcement */ #define Q_XGETQUOTA XQM_CMD(3) /* get disk limits and usage */ #define Q_XSETQLIM XQM_CMD(4) /* set disk limits */ #define Q_XGETQSTAT XQM_CMD(5) /* get quota subsystem status */ #define Q_XQUOTARM XQM_CMD(6) /* free disk space used by dquots */ #define Q_XQUOTASYNC XQM_CMD(7) /* delalloc flush, updates dquots */ #define Q_XGETQSTATV XQM_CMD(8) /* newer version of get quota */ #define Q_XGETNEXTQUOTA XQM_CMD(9) /* get disk limits and usage >= ID */ /* * fs_disk_quota structure: * * This contains the current quota information regarding a user/proj/group. * It is 64-bit aligned, and all the blk units are in BBs (Basic Blocks) of * 512 bytes. */ #define FS_DQUOT_VERSION 1 /* fs_disk_quota.d_version */ typedef struct fs_disk_quota { __s8 d_version; /* version of this structure */ __s8 d_flags; /* FS_{USER,PROJ,GROUP}_QUOTA */ __u16 d_fieldmask; /* field specifier */ __u32 d_id; /* user, project, or group ID */ __u64 d_blk_hardlimit;/* absolute limit on disk blks */ __u64 d_blk_softlimit;/* preferred limit on disk blks */ __u64 d_ino_hardlimit;/* maximum # allocated inodes */ __u64 d_ino_softlimit;/* preferred inode limit */ __u64 d_bcount; /* # disk blocks owned by the user */ __u64 d_icount; /* # inodes owned by the user */ __s32 d_itimer; /* zero if within inode limits */ /* if not, we refuse service */ __s32 d_btimer; /* similar to above; for disk blocks */ __u16 d_iwarns; /* # warnings issued wrt num inodes */ __u16 d_bwarns; /* # warnings issued wrt disk blocks */ __s8 d_itimer_hi; /* upper 8 bits of timer values */ __s8 d_btimer_hi; __s8 d_rtbtimer_hi; __s8 d_padding2; /* padding2 - for future use */ __u64 d_rtb_hardlimit;/* absolute limit on realtime blks */ __u64 d_rtb_softlimit;/* preferred limit on RT disk blks */ __u64 d_rtbcount; /* # realtime blocks owned */ __s32 d_rtbtimer; /* similar to above; for RT disk blks */ __u16 d_rtbwarns; /* # warnings issued wrt RT disk blks */ __s16 d_padding3; /* padding3 - for future use */ char d_padding4[8]; /* yet more padding */ } fs_disk_quota_t; /* * These fields are sent to Q_XSETQLIM to specify fields that need to change. */ #define FS_DQ_ISOFT (1<<0) #define FS_DQ_IHARD (1<<1) #define FS_DQ_BSOFT (1<<2) #define FS_DQ_BHARD (1<<3) #define FS_DQ_RTBSOFT (1<<4) #define FS_DQ_RTBHARD (1<<5) #define FS_DQ_LIMIT_MASK (FS_DQ_ISOFT | FS_DQ_IHARD | FS_DQ_BSOFT | \ FS_DQ_BHARD | FS_DQ_RTBSOFT | FS_DQ_RTBHARD) /* * These timers can only be set in super user's dquot. For others, timers are * automatically started and stopped. Superusers timer values set the limits * for the rest. In case these values are zero, the DQ_{F,B}TIMELIMIT values * defined below are used. * These values also apply only to the d_fieldmask field for Q_XSETQLIM. */ #define FS_DQ_BTIMER (1<<6) #define FS_DQ_ITIMER (1<<7) #define FS_DQ_RTBTIMER (1<<8) #define FS_DQ_TIMER_MASK (FS_DQ_BTIMER | FS_DQ_ITIMER | FS_DQ_RTBTIMER) /* * Warning counts are set in both super user's dquot and others. For others, * warnings are set/cleared by the administrators (or automatically by going * below the soft limit). Superusers warning values set the warning limits * for the rest. In case these values are zero, the DQ_{F,B}WARNLIMIT values * defined below are used. * These values also apply only to the d_fieldmask field for Q_XSETQLIM. */ #define FS_DQ_BWARNS (1<<9) #define FS_DQ_IWARNS (1<<10) #define FS_DQ_RTBWARNS (1<<11) #define FS_DQ_WARNS_MASK (FS_DQ_BWARNS | FS_DQ_IWARNS | FS_DQ_RTBWARNS) /* * Accounting values. These can only be set for filesystem with * non-transactional quotas that require quotacheck(8) in userspace. */ #define FS_DQ_BCOUNT (1<<12) #define FS_DQ_ICOUNT (1<<13) #define FS_DQ_RTBCOUNT (1<<14) #define FS_DQ_ACCT_MASK (FS_DQ_BCOUNT | FS_DQ_ICOUNT | FS_DQ_RTBCOUNT) /* * Quota expiration timestamps are 40-bit signed integers, with the upper 8 * bits encoded in the _hi fields. */ #define FS_DQ_BIGTIME (1<<15) /* * Various flags related to quotactl(2). */ #define FS_QUOTA_UDQ_ACCT (1<<0) /* user quota accounting */ #define FS_QUOTA_UDQ_ENFD (1<<1) /* user quota limits enforcement */ #define FS_QUOTA_GDQ_ACCT (1<<2) /* group quota accounting */ #define FS_QUOTA_GDQ_ENFD (1<<3) /* group quota limits enforcement */ #define FS_QUOTA_PDQ_ACCT (1<<4) /* project quota accounting */ #define FS_QUOTA_PDQ_ENFD (1<<5) /* project quota limits enforcement */ #define FS_USER_QUOTA (1<<0) /* user quota type */ #define FS_PROJ_QUOTA (1<<1) /* project quota type */ #define FS_GROUP_QUOTA (1<<2) /* group quota type */ /* * fs_quota_stat is the struct returned in Q_XGETQSTAT for a given file system. * Provides a centralized way to get meta information about the quota subsystem. * eg. space taken up for user and group quotas, number of dquots currently * incore. */ #define FS_QSTAT_VERSION 1 /* fs_quota_stat.qs_version */ /* * Some basic information about 'quota files'. */ typedef struct fs_qfilestat { __u64 qfs_ino; /* inode number */ __u64 qfs_nblks; /* number of BBs 512-byte-blks */ __u32 qfs_nextents; /* number of extents */ } fs_qfilestat_t; typedef struct fs_quota_stat { __s8 qs_version; /* version number for future changes */ __u16 qs_flags; /* FS_QUOTA_{U,P,G}DQ_{ACCT,ENFD} */ __s8 qs_pad; /* unused */ fs_qfilestat_t qs_uquota; /* user quota storage information */ fs_qfilestat_t qs_gquota; /* group quota storage information */ __u32 qs_incoredqs; /* number of dquots incore */ __s32 qs_btimelimit; /* limit for blks timer */ __s32 qs_itimelimit; /* limit for inodes timer */ __s32 qs_rtbtimelimit;/* limit for rt blks timer */ __u16 qs_bwarnlimit; /* limit for num warnings */ __u16 qs_iwarnlimit; /* limit for num warnings */ } fs_quota_stat_t; /* * fs_quota_statv is used by Q_XGETQSTATV for a given file system. It provides * a centralized way to get meta information about the quota subsystem. eg. * space taken up for user, group, and project quotas, number of dquots * currently incore. * * This version has proper versioning support with appropriate padding for * future expansions, and ability to expand for future without creating any * backward compatibility issues. * * Q_XGETQSTATV uses the passed in value of the requested version via * fs_quota_statv.qs_version to determine the return data layout of * fs_quota_statv. The kernel will fill the data fields relevant to that * version. * * If kernel does not support user space caller specified version, EINVAL will * be returned. User space caller can then reduce the version number and retry * the same command. */ #define FS_QSTATV_VERSION1 1 /* fs_quota_statv.qs_version */ /* * Some basic information about 'quota files' for Q_XGETQSTATV command */ struct fs_qfilestatv { __u64 qfs_ino; /* inode number */ __u64 qfs_nblks; /* number of BBs 512-byte-blks */ __u32 qfs_nextents; /* number of extents */ __u32 qfs_pad; /* pad for 8-byte alignment */ }; struct fs_quota_statv { __s8 qs_version; /* version for future changes */ __u8 qs_pad1; /* pad for 16bit alignment */ __u16 qs_flags; /* FS_QUOTA_.* flags */ __u32 qs_incoredqs; /* number of dquots incore */ struct fs_qfilestatv qs_uquota; /* user quota information */ struct fs_qfilestatv qs_gquota; /* group quota information */ struct fs_qfilestatv qs_pquota; /* project quota information */ __s32 qs_btimelimit; /* limit for blks timer */ __s32 qs_itimelimit; /* limit for inodes timer */ __s32 qs_rtbtimelimit;/* limit for rt blks timer */ __u16 qs_bwarnlimit; /* limit for num warnings */ __u16 qs_iwarnlimit; /* limit for num warnings */ __u64 qs_pad2[8]; /* for future proofing */ }; #endif /* _LINUX_DQBLK_XFS_H */