1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2000-2005 Silicon Graphics, Inc. 4 * All Rights Reserved. 5 */ 6 #ifndef __XFS_QM_H__ 7 #define __XFS_QM_H__ 8 9 #include "xfs_dquot_item.h" 10 #include "xfs_dquot.h" 11 12 struct xfs_inode; 13 14 extern struct kmem_cache *xfs_dqtrx_cache; 15 16 /* 17 * Number of bmaps that we ask from bmapi when doing a quotacheck. 18 * We make this restriction to keep the memory usage to a minimum. 19 */ 20 #define XFS_DQITER_MAP_SIZE 10 21 22 #define XFS_IS_DQUOT_UNINITIALIZED(dqp) ( \ 23 !dqp->q_blk.hardlimit && \ 24 !dqp->q_blk.softlimit && \ 25 !dqp->q_rtb.hardlimit && \ 26 !dqp->q_rtb.softlimit && \ 27 !dqp->q_ino.hardlimit && \ 28 !dqp->q_ino.softlimit && \ 29 !dqp->q_blk.count && \ 30 !dqp->q_rtb.count && \ 31 !dqp->q_ino.count) 32 33 struct xfs_quota_limits { 34 xfs_qcnt_t hard; /* default hard limit */ 35 xfs_qcnt_t soft; /* default soft limit */ 36 time64_t time; /* limit for timers */ 37 }; 38 39 /* Defaults for each quota type: time limits, warn limits, usage limits */ 40 struct xfs_def_quota { 41 struct xfs_quota_limits blk; 42 struct xfs_quota_limits ino; 43 struct xfs_quota_limits rtb; 44 }; 45 46 /* 47 * Various quota information for individual filesystems. 48 * The mount structure keeps a pointer to this. 49 */ 50 struct xfs_quotainfo { 51 struct radix_tree_root qi_uquota_tree; 52 struct radix_tree_root qi_gquota_tree; 53 struct radix_tree_root qi_pquota_tree; 54 struct mutex qi_tree_lock; 55 struct xfs_inode *qi_uquotaip; /* user quota inode */ 56 struct xfs_inode *qi_gquotaip; /* group quota inode */ 57 struct xfs_inode *qi_pquotaip; /* project quota inode */ 58 struct list_lru qi_lru; 59 int qi_dquots; 60 struct mutex qi_quotaofflock;/* to serialize quotaoff */ 61 xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */ 62 uint qi_dqperchunk; /* # ondisk dq in above chunk */ 63 struct xfs_def_quota qi_usr_default; 64 struct xfs_def_quota qi_grp_default; 65 struct xfs_def_quota qi_prj_default; 66 struct shrinker *qi_shrinker; 67 68 /* Minimum and maximum quota expiration timestamp values. */ 69 time64_t qi_expiry_min; 70 time64_t qi_expiry_max; 71 72 /* Hook to feed quota counter updates to an active online repair. */ 73 struct xfs_hooks qi_mod_ino_dqtrx_hooks; 74 struct xfs_hooks qi_apply_dqtrx_hooks; 75 }; 76 77 static inline struct radix_tree_root * 78 xfs_dquot_tree( 79 struct xfs_quotainfo *qi, 80 xfs_dqtype_t type) 81 { 82 switch (type) { 83 case XFS_DQTYPE_USER: 84 return &qi->qi_uquota_tree; 85 case XFS_DQTYPE_GROUP: 86 return &qi->qi_gquota_tree; 87 case XFS_DQTYPE_PROJ: 88 return &qi->qi_pquota_tree; 89 default: 90 ASSERT(0); 91 } 92 return NULL; 93 } 94 95 static inline struct xfs_inode * 96 xfs_quota_inode(struct xfs_mount *mp, xfs_dqtype_t type) 97 { 98 switch (type) { 99 case XFS_DQTYPE_USER: 100 return mp->m_quotainfo->qi_uquotaip; 101 case XFS_DQTYPE_GROUP: 102 return mp->m_quotainfo->qi_gquotaip; 103 case XFS_DQTYPE_PROJ: 104 return mp->m_quotainfo->qi_pquotaip; 105 default: 106 ASSERT(0); 107 } 108 return NULL; 109 } 110 111 /* 112 * Parameters for tracking dqtrx changes on behalf of an inode. The hook 113 * function arg parameter is the field being updated. 114 */ 115 struct xfs_mod_ino_dqtrx_params { 116 uintptr_t tx_id; 117 xfs_ino_t ino; 118 xfs_dqtype_t q_type; 119 xfs_dqid_t q_id; 120 int64_t delta; 121 }; 122 123 extern void xfs_trans_mod_dquot(struct xfs_trans *tp, struct xfs_dquot *dqp, 124 uint field, int64_t delta); 125 extern void xfs_trans_dqjoin(struct xfs_trans *, struct xfs_dquot *); 126 extern void xfs_trans_log_dquot(struct xfs_trans *, struct xfs_dquot *); 127 128 /* 129 * We keep the usr, grp, and prj dquots separately so that locking will be 130 * easier to do at commit time. All transactions that we know of at this point 131 * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value. 132 */ 133 enum { 134 XFS_QM_TRANS_USR = 0, 135 XFS_QM_TRANS_GRP, 136 XFS_QM_TRANS_PRJ, 137 XFS_QM_TRANS_DQTYPES 138 }; 139 #define XFS_QM_TRANS_MAXDQS 5 140 struct xfs_dquot_acct { 141 struct xfs_dqtrx dqs[XFS_QM_TRANS_DQTYPES][XFS_QM_TRANS_MAXDQS]; 142 }; 143 144 /* 145 * Users are allowed to have a usage exceeding their softlimit for 146 * a period this long. 147 */ 148 #define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */ 149 #define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */ 150 #define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */ 151 152 extern void xfs_qm_destroy_quotainfo(struct xfs_mount *); 153 154 /* quota ops */ 155 extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint); 156 extern int xfs_qm_scall_getquota(struct xfs_mount *mp, 157 xfs_dqid_t id, 158 xfs_dqtype_t type, 159 struct qc_dqblk *dst); 160 extern int xfs_qm_scall_getquota_next(struct xfs_mount *mp, 161 xfs_dqid_t *id, 162 xfs_dqtype_t type, 163 struct qc_dqblk *dst); 164 extern int xfs_qm_scall_setqlim(struct xfs_mount *mp, 165 xfs_dqid_t id, 166 xfs_dqtype_t type, 167 struct qc_dqblk *newlim); 168 extern int xfs_qm_scall_quotaon(struct xfs_mount *, uint); 169 extern int xfs_qm_scall_quotaoff(struct xfs_mount *, uint); 170 171 static inline struct xfs_def_quota * 172 xfs_get_defquota(struct xfs_quotainfo *qi, xfs_dqtype_t type) 173 { 174 switch (type) { 175 case XFS_DQTYPE_USER: 176 return &qi->qi_usr_default; 177 case XFS_DQTYPE_GROUP: 178 return &qi->qi_grp_default; 179 case XFS_DQTYPE_PROJ: 180 return &qi->qi_prj_default; 181 default: 182 ASSERT(0); 183 return NULL; 184 } 185 } 186 187 int xfs_qm_qino_load(struct xfs_mount *mp, xfs_dqtype_t type, 188 struct xfs_inode **ipp); 189 190 #endif /* __XFS_QM_H__ */ 191