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_zone *xfs_qm_dqtrxzone; 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_core.d_blk_hardlimit && \ 24 !dqp->q_core.d_blk_softlimit && \ 25 !dqp->q_core.d_rtb_hardlimit && \ 26 !dqp->q_core.d_rtb_softlimit && \ 27 !dqp->q_core.d_ino_hardlimit && \ 28 !dqp->q_core.d_ino_softlimit && \ 29 !dqp->q_core.d_bcount && \ 30 !dqp->q_core.d_rtbcount && \ 31 !dqp->q_core.d_icount) 32 33 /* 34 * This defines the unit of allocation of dquots. 35 * Currently, it is just one file system block, and a 4K blk contains 30 36 * (136 * 30 = 4080) dquots. It's probably not worth trying to make 37 * this more dynamic. 38 * XXXsup However, if this number is changed, we have to make sure that we don't 39 * implicitly assume that we do allocations in chunks of a single filesystem 40 * block in the dquot/xqm code. 41 */ 42 #define XFS_DQUOT_CLUSTER_SIZE_FSB (xfs_filblks_t)1 43 44 /* Defaults for each quota type: time limits, warn limits, usage limits */ 45 struct xfs_def_quota { 46 time64_t btimelimit; /* limit for blks timer */ 47 time64_t itimelimit; /* limit for inodes timer */ 48 time64_t rtbtimelimit; /* limit for rt blks timer */ 49 xfs_qwarncnt_t bwarnlimit; /* limit for blks warnings */ 50 xfs_qwarncnt_t iwarnlimit; /* limit for inodes warnings */ 51 xfs_qwarncnt_t rtbwarnlimit; /* limit for rt blks warnings */ 52 xfs_qcnt_t bhardlimit; /* default data blk hard limit */ 53 xfs_qcnt_t bsoftlimit; /* default data blk soft limit */ 54 xfs_qcnt_t ihardlimit; /* default inode count hard limit */ 55 xfs_qcnt_t isoftlimit; /* default inode count soft limit */ 56 xfs_qcnt_t rtbhardlimit; /* default realtime blk hard limit */ 57 xfs_qcnt_t rtbsoftlimit; /* default realtime blk soft limit */ 58 }; 59 60 /* 61 * Various quota information for individual filesystems. 62 * The mount structure keeps a pointer to this. 63 */ 64 struct xfs_quotainfo { 65 struct radix_tree_root qi_uquota_tree; 66 struct radix_tree_root qi_gquota_tree; 67 struct radix_tree_root qi_pquota_tree; 68 struct mutex qi_tree_lock; 69 struct xfs_inode *qi_uquotaip; /* user quota inode */ 70 struct xfs_inode *qi_gquotaip; /* group quota inode */ 71 struct xfs_inode *qi_pquotaip; /* project quota inode */ 72 struct list_lru qi_lru; 73 int qi_dquots; 74 struct mutex qi_quotaofflock;/* to serialize quotaoff */ 75 xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */ 76 uint qi_dqperchunk; /* # ondisk dq in above chunk */ 77 struct xfs_def_quota qi_usr_default; 78 struct xfs_def_quota qi_grp_default; 79 struct xfs_def_quota qi_prj_default; 80 struct shrinker qi_shrinker; 81 }; 82 83 static inline struct radix_tree_root * 84 xfs_dquot_tree( 85 struct xfs_quotainfo *qi, 86 int type) 87 { 88 switch (type) { 89 case XFS_DQ_USER: 90 return &qi->qi_uquota_tree; 91 case XFS_DQ_GROUP: 92 return &qi->qi_gquota_tree; 93 case XFS_DQ_PROJ: 94 return &qi->qi_pquota_tree; 95 default: 96 ASSERT(0); 97 } 98 return NULL; 99 } 100 101 static inline struct xfs_inode * 102 xfs_quota_inode(xfs_mount_t *mp, uint dq_flags) 103 { 104 switch (dq_flags & XFS_DQ_ALLTYPES) { 105 case XFS_DQ_USER: 106 return mp->m_quotainfo->qi_uquotaip; 107 case XFS_DQ_GROUP: 108 return mp->m_quotainfo->qi_gquotaip; 109 case XFS_DQ_PROJ: 110 return mp->m_quotainfo->qi_pquotaip; 111 default: 112 ASSERT(0); 113 } 114 return NULL; 115 } 116 117 static inline int 118 xfs_dquot_type(struct xfs_dquot *dqp) 119 { 120 if (XFS_QM_ISUDQ(dqp)) 121 return XFS_DQ_USER; 122 if (XFS_QM_ISGDQ(dqp)) 123 return XFS_DQ_GROUP; 124 ASSERT(XFS_QM_ISPDQ(dqp)); 125 return XFS_DQ_PROJ; 126 } 127 128 extern void xfs_trans_mod_dquot(struct xfs_trans *tp, struct xfs_dquot *dqp, 129 uint field, int64_t delta); 130 extern void xfs_trans_dqjoin(struct xfs_trans *, struct xfs_dquot *); 131 extern void xfs_trans_log_dquot(struct xfs_trans *, struct xfs_dquot *); 132 133 /* 134 * We keep the usr, grp, and prj dquots separately so that locking will be 135 * easier to do at commit time. All transactions that we know of at this point 136 * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value. 137 */ 138 enum { 139 XFS_QM_TRANS_USR = 0, 140 XFS_QM_TRANS_GRP, 141 XFS_QM_TRANS_PRJ, 142 XFS_QM_TRANS_DQTYPES 143 }; 144 #define XFS_QM_TRANS_MAXDQS 2 145 struct xfs_dquot_acct { 146 struct xfs_dqtrx dqs[XFS_QM_TRANS_DQTYPES][XFS_QM_TRANS_MAXDQS]; 147 }; 148 149 /* 150 * Users are allowed to have a usage exceeding their softlimit for 151 * a period this long. 152 */ 153 #define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */ 154 #define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */ 155 #define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */ 156 157 #define XFS_QM_BWARNLIMIT 5 158 #define XFS_QM_IWARNLIMIT 5 159 #define XFS_QM_RTBWARNLIMIT 5 160 161 extern void xfs_qm_destroy_quotainfo(struct xfs_mount *); 162 163 /* dquot stuff */ 164 extern void xfs_qm_dqpurge_all(struct xfs_mount *, uint); 165 extern void xfs_qm_dqrele_all_inodes(struct xfs_mount *, uint); 166 167 /* quota ops */ 168 extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint); 169 extern int xfs_qm_scall_getquota(struct xfs_mount *, xfs_dqid_t, 170 uint, struct qc_dqblk *); 171 extern int xfs_qm_scall_getquota_next(struct xfs_mount *, 172 xfs_dqid_t *, uint, struct qc_dqblk *); 173 extern int xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint, 174 struct qc_dqblk *); 175 extern int xfs_qm_scall_quotaon(struct xfs_mount *, uint); 176 extern int xfs_qm_scall_quotaoff(struct xfs_mount *, uint); 177 178 static inline struct xfs_def_quota * 179 xfs_get_defquota(struct xfs_quotainfo *qi, int type) 180 { 181 switch (type) { 182 case XFS_DQ_USER: 183 return &qi->qi_usr_default; 184 case XFS_DQ_GROUP: 185 return &qi->qi_grp_default; 186 case XFS_DQ_PROJ: 187 return &qi->qi_prj_default; 188 default: 189 ASSERT(0); 190 return NULL; 191 } 192 } 193 194 #endif /* __XFS_QM_H__ */ 195