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 struct xfs_def_quota { 45 xfs_qcnt_t bhardlimit; /* default data blk hard limit */ 46 xfs_qcnt_t bsoftlimit; /* default data blk soft limit */ 47 xfs_qcnt_t ihardlimit; /* default inode count hard limit */ 48 xfs_qcnt_t isoftlimit; /* default inode count soft limit */ 49 xfs_qcnt_t rtbhardlimit; /* default realtime blk hard limit */ 50 xfs_qcnt_t rtbsoftlimit; /* default realtime blk soft limit */ 51 }; 52 53 /* 54 * Various quota information for individual filesystems. 55 * The mount structure keeps a pointer to this. 56 */ 57 typedef struct xfs_quotainfo { 58 struct radix_tree_root qi_uquota_tree; 59 struct radix_tree_root qi_gquota_tree; 60 struct radix_tree_root qi_pquota_tree; 61 struct mutex qi_tree_lock; 62 struct xfs_inode *qi_uquotaip; /* user quota inode */ 63 struct xfs_inode *qi_gquotaip; /* group quota inode */ 64 struct xfs_inode *qi_pquotaip; /* project quota inode */ 65 struct list_lru qi_lru; 66 int qi_dquots; 67 time_t qi_btimelimit; /* limit for blks timer */ 68 time_t qi_itimelimit; /* limit for inodes timer */ 69 time_t qi_rtbtimelimit;/* limit for rt blks timer */ 70 xfs_qwarncnt_t qi_bwarnlimit; /* limit for blks warnings */ 71 xfs_qwarncnt_t qi_iwarnlimit; /* limit for inodes warnings */ 72 xfs_qwarncnt_t qi_rtbwarnlimit;/* limit for rt blks warnings */ 73 struct mutex qi_quotaofflock;/* to serialize quotaoff */ 74 xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */ 75 uint qi_dqperchunk; /* # ondisk dqs in above chunk */ 76 struct xfs_def_quota qi_usr_default; 77 struct xfs_def_quota qi_grp_default; 78 struct xfs_def_quota qi_prj_default; 79 struct shrinker qi_shrinker; 80 } xfs_quotainfo_t; 81 82 static inline struct radix_tree_root * 83 xfs_dquot_tree( 84 struct xfs_quotainfo *qi, 85 int type) 86 { 87 switch (type) { 88 case XFS_DQ_USER: 89 return &qi->qi_uquota_tree; 90 case XFS_DQ_GROUP: 91 return &qi->qi_gquota_tree; 92 case XFS_DQ_PROJ: 93 return &qi->qi_pquota_tree; 94 default: 95 ASSERT(0); 96 } 97 return NULL; 98 } 99 100 static inline struct xfs_inode * 101 xfs_quota_inode(xfs_mount_t *mp, uint dq_flags) 102 { 103 switch (dq_flags & XFS_DQ_ALLTYPES) { 104 case XFS_DQ_USER: 105 return mp->m_quotainfo->qi_uquotaip; 106 case XFS_DQ_GROUP: 107 return mp->m_quotainfo->qi_gquotaip; 108 case XFS_DQ_PROJ: 109 return mp->m_quotainfo->qi_pquotaip; 110 default: 111 ASSERT(0); 112 } 113 return NULL; 114 } 115 116 extern void xfs_trans_mod_dquot(struct xfs_trans *, 117 struct xfs_dquot *, uint, long); 118 extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *, 119 struct xfs_mount *, struct xfs_dquot *, 120 struct xfs_dquot *, struct xfs_dquot *, 121 long, long, uint); 122 extern void xfs_trans_dqjoin(struct xfs_trans *, struct xfs_dquot *); 123 extern void xfs_trans_log_dquot(struct xfs_trans *, struct xfs_dquot *); 124 125 /* 126 * We keep the usr, grp, and prj dquots separately so that locking will be 127 * easier to do at commit time. All transactions that we know of at this point 128 * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value. 129 */ 130 enum { 131 XFS_QM_TRANS_USR = 0, 132 XFS_QM_TRANS_GRP, 133 XFS_QM_TRANS_PRJ, 134 XFS_QM_TRANS_DQTYPES 135 }; 136 #define XFS_QM_TRANS_MAXDQS 2 137 struct xfs_dquot_acct { 138 struct xfs_dqtrx dqs[XFS_QM_TRANS_DQTYPES][XFS_QM_TRANS_MAXDQS]; 139 }; 140 141 /* 142 * Users are allowed to have a usage exceeding their softlimit for 143 * a period this long. 144 */ 145 #define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */ 146 #define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */ 147 #define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */ 148 149 #define XFS_QM_BWARNLIMIT 5 150 #define XFS_QM_IWARNLIMIT 5 151 #define XFS_QM_RTBWARNLIMIT 5 152 153 extern void xfs_qm_destroy_quotainfo(struct xfs_mount *); 154 155 /* dquot stuff */ 156 extern void xfs_qm_dqpurge_all(struct xfs_mount *, uint); 157 extern void xfs_qm_dqrele_all_inodes(struct xfs_mount *, uint); 158 159 /* quota ops */ 160 extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint); 161 extern int xfs_qm_scall_getquota(struct xfs_mount *, xfs_dqid_t, 162 uint, struct qc_dqblk *); 163 extern int xfs_qm_scall_getquota_next(struct xfs_mount *, 164 xfs_dqid_t *, uint, struct qc_dqblk *); 165 extern int xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint, 166 struct qc_dqblk *); 167 extern int xfs_qm_scall_quotaon(struct xfs_mount *, uint); 168 extern int xfs_qm_scall_quotaoff(struct xfs_mount *, uint); 169 170 static inline struct xfs_def_quota * 171 xfs_get_defquota(struct xfs_dquot *dqp, struct xfs_quotainfo *qi) 172 { 173 struct xfs_def_quota *defq; 174 175 if (XFS_QM_ISUDQ(dqp)) 176 defq = &qi->qi_usr_default; 177 else if (XFS_QM_ISGDQ(dqp)) 178 defq = &qi->qi_grp_default; 179 else { 180 ASSERT(XFS_QM_ISPDQ(dqp)); 181 defq = &qi->qi_prj_default; 182 } 183 return defq; 184 } 185 186 #endif /* __XFS_QM_H__ */ 187