1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2000-2005 Silicon Graphics, Inc. 4 * All Rights Reserved. 5 */ 6 #ifndef __XFS_QUOTA_DEFS_H__ 7 #define __XFS_QUOTA_DEFS_H__ 8 9 /* 10 * Quota definitions shared between user and kernel source trees. 11 */ 12 13 /* 14 * Even though users may not have quota limits occupying all 64-bits, 15 * they may need 64-bit accounting. Hence, 64-bit quota-counters, 16 * and quota-limits. This is a waste in the common case, but hey ... 17 */ 18 typedef uint64_t xfs_qcnt_t; 19 typedef uint16_t xfs_qwarncnt_t; 20 21 typedef uint8_t xfs_dqtype_t; 22 23 #define XFS_DQTYPE_STRINGS \ 24 { XFS_DQTYPE_USER, "USER" }, \ 25 { XFS_DQTYPE_PROJ, "PROJ" }, \ 26 { XFS_DQTYPE_GROUP, "GROUP" } 27 28 /* 29 * flags for q_flags field in the dquot. 30 */ 31 #define XFS_DQFLAG_DIRTY (1 << 0) /* dquot is dirty */ 32 #define XFS_DQFLAG_FREEING (1 << 1) /* dquot is being torn down */ 33 34 #define XFS_DQFLAG_STRINGS \ 35 { XFS_DQFLAG_DIRTY, "DIRTY" }, \ 36 { XFS_DQFLAG_FREEING, "FREEING" } 37 38 /* 39 * We have the possibility of all three quota types being active at once, and 40 * hence free space modification requires modification of all three current 41 * dquots in a single transaction. For this case we need to have a reservation 42 * of at least 3 dquots. 43 * 44 * However, a chmod operation can change both UID and GID in a single 45 * transaction, resulting in requiring {old, new} x {uid, gid} dquots to be 46 * modified. Hence for this case we need to reserve space for at least 4 dquots. 47 * 48 * And in the worst case, there's a rename operation that can be modifying up to 49 * 4 inodes with dquots attached to them. In reality, the only inodes that can 50 * have their dquots modified are the source and destination directory inodes 51 * due to directory name creation and removal. That can require space allocation 52 * and/or freeing on both directory inodes, and hence all three dquots on each 53 * inode can be modified. And if the directories are world writeable, all the 54 * dquots can be unique and so 6 dquots can be modified.... 55 * 56 * And, of course, we also need to take into account the dquot log format item 57 * used to describe each dquot. 58 */ 59 #define XFS_DQUOT_LOGRES(mp) \ 60 ((sizeof(struct xfs_dq_logformat) + sizeof(struct xfs_disk_dquot)) * 6) 61 62 #define XFS_IS_QUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_ALL_QUOTA_ACCT) 63 #define XFS_IS_UQUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_UQUOTA_ACCT) 64 #define XFS_IS_PQUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_PQUOTA_ACCT) 65 #define XFS_IS_GQUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_GQUOTA_ACCT) 66 #define XFS_IS_UQUOTA_ENFORCED(mp) ((mp)->m_qflags & XFS_UQUOTA_ENFD) 67 #define XFS_IS_GQUOTA_ENFORCED(mp) ((mp)->m_qflags & XFS_GQUOTA_ENFD) 68 #define XFS_IS_PQUOTA_ENFORCED(mp) ((mp)->m_qflags & XFS_PQUOTA_ENFD) 69 70 /* 71 * Incore only flags for quotaoff - these bits get cleared when quota(s) 72 * are in the process of getting turned off. These flags are in m_qflags but 73 * never in sb_qflags. 74 */ 75 #define XFS_UQUOTA_ACTIVE 0x1000 /* uquotas are being turned off */ 76 #define XFS_GQUOTA_ACTIVE 0x2000 /* gquotas are being turned off */ 77 #define XFS_PQUOTA_ACTIVE 0x4000 /* pquotas are being turned off */ 78 #define XFS_ALL_QUOTA_ACTIVE \ 79 (XFS_UQUOTA_ACTIVE | XFS_GQUOTA_ACTIVE | XFS_PQUOTA_ACTIVE) 80 81 /* 82 * Checking XFS_IS_*QUOTA_ON() while holding any inode lock guarantees 83 * quota will be not be switched off as long as that inode lock is held. 84 */ 85 #define XFS_IS_QUOTA_ON(mp) ((mp)->m_qflags & (XFS_UQUOTA_ACTIVE | \ 86 XFS_GQUOTA_ACTIVE | \ 87 XFS_PQUOTA_ACTIVE)) 88 #define XFS_IS_UQUOTA_ON(mp) ((mp)->m_qflags & XFS_UQUOTA_ACTIVE) 89 #define XFS_IS_GQUOTA_ON(mp) ((mp)->m_qflags & XFS_GQUOTA_ACTIVE) 90 #define XFS_IS_PQUOTA_ON(mp) ((mp)->m_qflags & XFS_PQUOTA_ACTIVE) 91 92 /* 93 * Flags to tell various functions what to do. Not all of these are meaningful 94 * to a single function. None of these XFS_QMOPT_* flags are meant to have 95 * persistent values (ie. their values can and will change between versions) 96 */ 97 #define XFS_QMOPT_UQUOTA 0x0000004 /* user dquot requested */ 98 #define XFS_QMOPT_PQUOTA 0x0000008 /* project dquot requested */ 99 #define XFS_QMOPT_FORCE_RES 0x0000010 /* ignore quota limits */ 100 #define XFS_QMOPT_SBVERSION 0x0000040 /* change superblock version num */ 101 #define XFS_QMOPT_GQUOTA 0x0002000 /* group dquot requested */ 102 103 /* 104 * flags to xfs_trans_mod_dquot to indicate which field needs to be 105 * modified. 106 */ 107 #define XFS_QMOPT_RES_REGBLKS 0x0010000 108 #define XFS_QMOPT_RES_RTBLKS 0x0020000 109 #define XFS_QMOPT_BCOUNT 0x0040000 110 #define XFS_QMOPT_ICOUNT 0x0080000 111 #define XFS_QMOPT_RTBCOUNT 0x0100000 112 #define XFS_QMOPT_DELBCOUNT 0x0200000 113 #define XFS_QMOPT_DELRTBCOUNT 0x0400000 114 #define XFS_QMOPT_RES_INOS 0x0800000 115 116 /* 117 * flags for dqalloc. 118 */ 119 #define XFS_QMOPT_INHERIT 0x1000000 120 121 /* 122 * flags to xfs_trans_mod_dquot. 123 */ 124 #define XFS_TRANS_DQ_RES_BLKS XFS_QMOPT_RES_REGBLKS 125 #define XFS_TRANS_DQ_RES_RTBLKS XFS_QMOPT_RES_RTBLKS 126 #define XFS_TRANS_DQ_RES_INOS XFS_QMOPT_RES_INOS 127 #define XFS_TRANS_DQ_BCOUNT XFS_QMOPT_BCOUNT 128 #define XFS_TRANS_DQ_DELBCOUNT XFS_QMOPT_DELBCOUNT 129 #define XFS_TRANS_DQ_ICOUNT XFS_QMOPT_ICOUNT 130 #define XFS_TRANS_DQ_RTBCOUNT XFS_QMOPT_RTBCOUNT 131 #define XFS_TRANS_DQ_DELRTBCOUNT XFS_QMOPT_DELRTBCOUNT 132 133 134 #define XFS_QMOPT_QUOTALL \ 135 (XFS_QMOPT_UQUOTA | XFS_QMOPT_PQUOTA | XFS_QMOPT_GQUOTA) 136 #define XFS_QMOPT_RESBLK_MASK (XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_RES_RTBLKS) 137 138 extern xfs_failaddr_t xfs_dquot_verify(struct xfs_mount *mp, 139 struct xfs_disk_dquot *ddq, xfs_dqid_t id); 140 extern xfs_failaddr_t xfs_dqblk_verify(struct xfs_mount *mp, 141 struct xfs_dqblk *dqb, xfs_dqid_t id); 142 extern int xfs_calc_dquots_per_chunk(unsigned int nbblks); 143 extern void xfs_dqblk_repair(struct xfs_mount *mp, struct xfs_dqblk *dqb, 144 xfs_dqid_t id, xfs_dqtype_t type); 145 146 #endif /* __XFS_QUOTA_H__ */ 147