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 /* 22 * flags for q_flags field in the dquot. 23 */ 24 #define XFS_DQ_USER 0x0001 /* a user quota */ 25 #define XFS_DQ_PROJ 0x0002 /* project quota */ 26 #define XFS_DQ_GROUP 0x0004 /* a group quota */ 27 #define XFS_DQ_DIRTY 0x0008 /* dquot is dirty */ 28 #define XFS_DQ_FREEING 0x0010 /* dquot is being torn down */ 29 30 #define XFS_DQ_ALLTYPES (XFS_DQ_USER|XFS_DQ_PROJ|XFS_DQ_GROUP) 31 32 #define XFS_DQ_FLAGS \ 33 { XFS_DQ_USER, "USER" }, \ 34 { XFS_DQ_PROJ, "PROJ" }, \ 35 { XFS_DQ_GROUP, "GROUP" }, \ 36 { XFS_DQ_DIRTY, "DIRTY" }, \ 37 { XFS_DQ_FREEING, "FREEING" } 38 39 /* 40 * We have the possibility of all three quota types being active at once, and 41 * hence free space modification requires modification of all three current 42 * dquots in a single transaction. For this case we need to have a reservation 43 * of at least 3 dquots. 44 * 45 * However, a chmod operation can change both UID and GID in a single 46 * transaction, resulting in requiring {old, new} x {uid, gid} dquots to be 47 * modified. Hence for this case we need to reserve space for at least 4 dquots. 48 * 49 * And in the worst case, there's a rename operation that can be modifying up to 50 * 4 inodes with dquots attached to them. In reality, the only inodes that can 51 * have their dquots modified are the source and destination directory inodes 52 * due to directory name creation and removal. That can require space allocation 53 * and/or freeing on both directory inodes, and hence all three dquots on each 54 * inode can be modified. And if the directories are world writeable, all the 55 * dquots can be unique and so 6 dquots can be modified.... 56 * 57 * And, of course, we also need to take into account the dquot log format item 58 * used to describe each dquot. 59 */ 60 #define XFS_DQUOT_LOGRES(mp) \ 61 ((sizeof(struct xfs_dq_logformat) + sizeof(struct xfs_disk_dquot)) * 6) 62 63 #define XFS_IS_QUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_ALL_QUOTA_ACCT) 64 #define XFS_IS_UQUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_UQUOTA_ACCT) 65 #define XFS_IS_PQUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_PQUOTA_ACCT) 66 #define XFS_IS_GQUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_GQUOTA_ACCT) 67 #define XFS_IS_UQUOTA_ENFORCED(mp) ((mp)->m_qflags & XFS_UQUOTA_ENFD) 68 #define XFS_IS_GQUOTA_ENFORCED(mp) ((mp)->m_qflags & XFS_GQUOTA_ENFD) 69 #define XFS_IS_PQUOTA_ENFORCED(mp) ((mp)->m_qflags & XFS_PQUOTA_ENFD) 70 71 /* 72 * Incore only flags for quotaoff - these bits get cleared when quota(s) 73 * are in the process of getting turned off. These flags are in m_qflags but 74 * never in sb_qflags. 75 */ 76 #define XFS_UQUOTA_ACTIVE 0x1000 /* uquotas are being turned off */ 77 #define XFS_GQUOTA_ACTIVE 0x2000 /* gquotas are being turned off */ 78 #define XFS_PQUOTA_ACTIVE 0x4000 /* pquotas are being turned off */ 79 #define XFS_ALL_QUOTA_ACTIVE \ 80 (XFS_UQUOTA_ACTIVE | XFS_GQUOTA_ACTIVE | XFS_PQUOTA_ACTIVE) 81 82 /* 83 * Checking XFS_IS_*QUOTA_ON() while holding any inode lock guarantees 84 * quota will be not be switched off as long as that inode lock is held. 85 */ 86 #define XFS_IS_QUOTA_ON(mp) ((mp)->m_qflags & (XFS_UQUOTA_ACTIVE | \ 87 XFS_GQUOTA_ACTIVE | \ 88 XFS_PQUOTA_ACTIVE)) 89 #define XFS_IS_UQUOTA_ON(mp) ((mp)->m_qflags & XFS_UQUOTA_ACTIVE) 90 #define XFS_IS_GQUOTA_ON(mp) ((mp)->m_qflags & XFS_GQUOTA_ACTIVE) 91 #define XFS_IS_PQUOTA_ON(mp) ((mp)->m_qflags & XFS_PQUOTA_ACTIVE) 92 93 /* 94 * Flags to tell various functions what to do. Not all of these are meaningful 95 * to a single function. None of these XFS_QMOPT_* flags are meant to have 96 * persistent values (ie. their values can and will change between versions) 97 */ 98 #define XFS_QMOPT_UQUOTA 0x0000004 /* user dquot requested */ 99 #define XFS_QMOPT_PQUOTA 0x0000008 /* project dquot requested */ 100 #define XFS_QMOPT_FORCE_RES 0x0000010 /* ignore quota limits */ 101 #define XFS_QMOPT_SBVERSION 0x0000040 /* change superblock version num */ 102 #define XFS_QMOPT_GQUOTA 0x0002000 /* group dquot requested */ 103 #define XFS_QMOPT_ENOSPC 0x0004000 /* enospc instead of edquot (prj) */ 104 105 /* 106 * flags to xfs_trans_mod_dquot to indicate which field needs to be 107 * modified. 108 */ 109 #define XFS_QMOPT_RES_REGBLKS 0x0010000 110 #define XFS_QMOPT_RES_RTBLKS 0x0020000 111 #define XFS_QMOPT_BCOUNT 0x0040000 112 #define XFS_QMOPT_ICOUNT 0x0080000 113 #define XFS_QMOPT_RTBCOUNT 0x0100000 114 #define XFS_QMOPT_DELBCOUNT 0x0200000 115 #define XFS_QMOPT_DELRTBCOUNT 0x0400000 116 #define XFS_QMOPT_RES_INOS 0x0800000 117 118 /* 119 * flags for dqalloc. 120 */ 121 #define XFS_QMOPT_INHERIT 0x1000000 122 123 /* 124 * flags to xfs_trans_mod_dquot. 125 */ 126 #define XFS_TRANS_DQ_RES_BLKS XFS_QMOPT_RES_REGBLKS 127 #define XFS_TRANS_DQ_RES_RTBLKS XFS_QMOPT_RES_RTBLKS 128 #define XFS_TRANS_DQ_RES_INOS XFS_QMOPT_RES_INOS 129 #define XFS_TRANS_DQ_BCOUNT XFS_QMOPT_BCOUNT 130 #define XFS_TRANS_DQ_DELBCOUNT XFS_QMOPT_DELBCOUNT 131 #define XFS_TRANS_DQ_ICOUNT XFS_QMOPT_ICOUNT 132 #define XFS_TRANS_DQ_RTBCOUNT XFS_QMOPT_RTBCOUNT 133 #define XFS_TRANS_DQ_DELRTBCOUNT XFS_QMOPT_DELRTBCOUNT 134 135 136 #define XFS_QMOPT_QUOTALL \ 137 (XFS_QMOPT_UQUOTA | XFS_QMOPT_PQUOTA | XFS_QMOPT_GQUOTA) 138 #define XFS_QMOPT_RESBLK_MASK (XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_RES_RTBLKS) 139 140 extern xfs_failaddr_t xfs_dquot_verify(struct xfs_mount *mp, 141 struct xfs_disk_dquot *ddq, xfs_dqid_t id, uint type); 142 extern xfs_failaddr_t xfs_dqblk_verify(struct xfs_mount *mp, 143 struct xfs_dqblk *dqb, xfs_dqid_t id, uint type); 144 extern int xfs_calc_dquots_per_chunk(unsigned int nbblks); 145 extern void xfs_dqblk_repair(struct xfs_mount *mp, struct xfs_dqblk *dqb, 146 xfs_dqid_t id, uint type); 147 148 #endif /* __XFS_QUOTA_H__ */ 149