diff options
Diffstat (limited to 'fs/xfs/libxfs/xfs_quota_defs.h')
| -rw-r--r-- | fs/xfs/libxfs/xfs_quota_defs.h | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_quota_defs.h b/fs/xfs/libxfs/xfs_quota_defs.h new file mode 100644 index 000000000..4bfdd5f4c --- /dev/null +++ b/fs/xfs/libxfs/xfs_quota_defs.h @@ -0,0 +1,148 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + */ +#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 being 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_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_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 xfs_failaddr_t xfs_dquot_verify(struct xfs_mount *mp, + struct xfs_disk_dquot *ddq, xfs_dqid_t id, uint type); +extern xfs_failaddr_t xfs_dqblk_verify(struct xfs_mount *mp, + struct xfs_dqblk *dqb, xfs_dqid_t id, uint type); +extern int xfs_calc_dquots_per_chunk(unsigned int nbblks); +extern int xfs_dqblk_repair(struct xfs_mount *mp, struct xfs_dqblk *dqb, + xfs_dqid_t id, uint type); + +#endif /* __XFS_QUOTA_H__ */ |