/* * Copyright (c) 2000-2005 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 General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it would be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef __XFS_QUOTA_DEFS_H__ #define __XFS_QUOTA_DEFS_H__ /* * Quota definitions shared between user and kernel source trees. */ /* * Even though users may not have quota limits occupying all 64-bits, * they may need 64-bit accounting. Hence, 64-bit quota-counters, * and quota-limits. This is a waste in the common case, but hey ... */ typedef __uint64_t xfs_qcnt_t; typedef __uint16_t xfs_qwarncnt_t; /* * flags for q_flags field in the dquot. */ #define XFS_DQ_USER 0x0001 /* a user quota */ #define XFS_DQ_PROJ 0x0002 /* project quota */ #define XFS_DQ_GROUP 0x0004 /* a group quota */ #define XFS_DQ_DIRTY 0x0008 /* dquot is dirty */ #define XFS_DQ_FREEING 0x0010 /* dquot is beeing torn down */ #define XFS_DQ_ALLTYPES (XFS_DQ_USER|XFS_DQ_PROJ|XFS_DQ_GROUP) #define XFS_DQ_FLAGS \ { XFS_DQ_USER, "USER" }, \ { XFS_DQ_PROJ, "PROJ" }, \ { XFS_DQ_GROUP, "GROUP" }, \ { XFS_DQ_DIRTY, "DIRTY" }, \ { XFS_DQ_FREEING, "FREEING" } /* * We have the possibility of all three quota types being active at once, and * hence free space modification requires modification of all three current * dquots in a single transaction. For this case we need to have a reservation * of at least 3 dquots. * * However, a chmod operation can change both UID and GID in a single * transaction, resulting in requiring {old, new} x {uid, gid} dquots to be * modified. Hence for this case we need to reserve space for at least 4 dquots. * * And in the worst case, there's a rename operation that can be modifying up to * 4 inodes with dquots attached to them. In reality, the only inodes that can * have their dquots modified are the source and destination directory inodes * due to directory name creation and removal. That can require space allocation * and/or freeing on both directory inodes, and hence all three dquots on each * inode can be modified. And if the directories are world writeable, all the * dquots can be unique and so 6 dquots can be modified.... * * And, of course, we also need to take into account the dquot log format item * used to describe each dquot. */ #define XFS_DQUOT_LOGRES(mp) \ ((sizeof(struct xfs_dq_logformat) + sizeof(struct xfs_disk_dquot)) * 6) #define XFS_IS_QUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_ALL_QUOTA_ACCT) #define XFS_IS_UQUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_UQUOTA_ACCT) #define XFS_IS_PQUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_PQUOTA_ACCT) #define XFS_IS_GQUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_GQUOTA_ACCT) #define XFS_IS_UQUOTA_ENFORCED(mp) ((mp)->m_qflags & XFS_UQUOTA_ENFD) #define XFS_IS_GQUOTA_ENFORCED(mp) ((mp)->m_qflags & XFS_GQUOTA_ENFD) #define XFS_IS_PQUOTA_ENFORCED(mp) ((mp)->m_qflags & XFS_PQUOTA_ENFD) /* * Incore only flags for quotaoff - these bits get cleared when quota(s) * are in the process of getting turned off. These flags are in m_qflags but * never in sb_qflags. */ #define XFS_UQUOTA_ACTIVE 0x1000 /* uquotas are being turned off */ #define XFS_GQUOTA_ACTIVE 0x2000 /* gquotas are being turned off */ #define XFS_PQUOTA_ACTIVE 0x4000 /* pquotas are being turned off */ #define XFS_ALL_QUOTA_ACTIVE \ (XFS_UQUOTA_ACTIVE | XFS_GQUOTA_ACTIVE | XFS_PQUOTA_ACTIVE) /* * Checking XFS_IS_*QUOTA_ON() while holding any inode lock guarantees * quota will be not be switched off as long as that inode lock is held. */ #define XFS_IS_QUOTA_ON(mp) ((mp)->m_qflags & (XFS_UQUOTA_ACTIVE | \ XFS_GQUOTA_ACTIVE | \ XFS_PQUOTA_ACTIVE)) #define XFS_IS_UQUOTA_ON(mp) ((mp)->m_qflags & XFS_UQUOTA_ACTIVE) #define XFS_IS_GQUOTA_ON(mp) ((mp)->m_qflags & XFS_GQUOTA_ACTIVE) #define XFS_IS_PQUOTA_ON(mp) ((mp)->m_qflags & XFS_PQUOTA_ACTIVE) /* * Flags to tell various functions what to do. Not all of these are meaningful * to a single function. None of these XFS_QMOPT_* flags are meant to have * persistent values (ie. their values can and will change between versions) */ #define XFS_QMOPT_DQALLOC 0x0000002 /* alloc dquot ondisk if needed */ #define XFS_QMOPT_UQUOTA 0x0000004 /* user dquot requested */ #define XFS_QMOPT_PQUOTA 0x0000008 /* project dquot requested */ #define XFS_QMOPT_FORCE_RES 0x0000010 /* ignore quota limits */ #define XFS_QMOPT_SBVERSION 0x0000040 /* change superblock version num */ #define XFS_QMOPT_DOWARN 0x0000400 /* increase warning cnt if needed */ #define XFS_QMOPT_DQREPAIR 0x0001000 /* repair dquot if damaged */ #define XFS_QMOPT_GQUOTA 0x0002000 /* group dquot requested */ #define XFS_QMOPT_ENOSPC 0x0004000 /* enospc instead of edquot (prj) */ /* * flags to xfs_trans_mod_dquot to indicate which field needs to be * modified. */ #define XFS_QMOPT_RES_REGBLKS 0x0010000 #define XFS_QMOPT_RES_RTBLKS 0x0020000 #define XFS_QMOPT_BCOUNT 0x0040000 #define XFS_QMOPT_ICOUNT 0x0080000 #define XFS_QMOPT_RTBCOUNT 0x0100000 #define XFS_QMOPT_DELBCOUNT 0x0200000 #define XFS_QMOPT_DELRTBCOUNT 0x0400000 #define XFS_QMOPT_RES_INOS 0x0800000 /* * flags for dqalloc. */ #define XFS_QMOPT_INHERIT 0x1000000 /* * flags to xfs_trans_mod_dquot. */ #define XFS_TRANS_DQ_RES_BLKS XFS_QMOPT_RES_REGBLKS #define XFS_TRANS_DQ_RES_RTBLKS XFS_QMOPT_RES_RTBLKS #define XFS_TRANS_DQ_RES_INOS XFS_QMOPT_RES_INOS #define XFS_TRANS_DQ_BCOUNT XFS_QMOPT_BCOUNT #define XFS_TRANS_DQ_DELBCOUNT XFS_QMOPT_DELBCOUNT #define XFS_TRANS_DQ_ICOUNT XFS_QMOPT_ICOUNT #define XFS_TRANS_DQ_RTBCOUNT XFS_QMOPT_RTBCOUNT #define XFS_TRANS_DQ_DELRTBCOUNT XFS_QMOPT_DELRTBCOUNT #define XFS_QMOPT_QUOTALL \ (XFS_QMOPT_UQUOTA | XFS_QMOPT_PQUOTA | XFS_QMOPT_GQUOTA) #define XFS_QMOPT_RESBLK_MASK (XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_RES_RTBLKS) extern int xfs_dqcheck(struct xfs_mount *mp, xfs_disk_dquot_t *ddq, xfs_dqid_t id, uint type, uint flags, const char *str); extern int xfs_calc_dquots_per_chunk(unsigned int nbblks); #endif /* __XFS_QUOTA_H__ */