1 /* 2 * Copyright (c) 2000-2005 Silicon Graphics, Inc. 3 * All Rights Reserved. 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it would be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 #ifndef __XFS_QM_H__ 19 #define __XFS_QM_H__ 20 21 #include "xfs_dquot_item.h" 22 #include "xfs_dquot.h" 23 24 struct xfs_inode; 25 26 extern struct kmem_zone *xfs_qm_dqtrxzone; 27 28 /* 29 * Number of bmaps that we ask from bmapi when doing a quotacheck. 30 * We make this restriction to keep the memory usage to a minimum. 31 */ 32 #define XFS_DQITER_MAP_SIZE 10 33 34 #define XFS_IS_DQUOT_UNINITIALIZED(dqp) ( \ 35 !dqp->q_core.d_blk_hardlimit && \ 36 !dqp->q_core.d_blk_softlimit && \ 37 !dqp->q_core.d_rtb_hardlimit && \ 38 !dqp->q_core.d_rtb_softlimit && \ 39 !dqp->q_core.d_ino_hardlimit && \ 40 !dqp->q_core.d_ino_softlimit && \ 41 !dqp->q_core.d_bcount && \ 42 !dqp->q_core.d_rtbcount && \ 43 !dqp->q_core.d_icount) 44 45 /* 46 * This defines the unit of allocation of dquots. 47 * Currently, it is just one file system block, and a 4K blk contains 30 48 * (136 * 30 = 4080) dquots. It's probably not worth trying to make 49 * this more dynamic. 50 * XXXsup However, if this number is changed, we have to make sure that we don't 51 * implicitly assume that we do allocations in chunks of a single filesystem 52 * block in the dquot/xqm code. 53 */ 54 #define XFS_DQUOT_CLUSTER_SIZE_FSB (xfs_filblks_t)1 55 56 /* 57 * Various quota information for individual filesystems. 58 * The mount structure keeps a pointer to this. 59 */ 60 typedef struct xfs_quotainfo { 61 struct radix_tree_root qi_uquota_tree; 62 struct radix_tree_root qi_gquota_tree; 63 struct radix_tree_root qi_pquota_tree; 64 struct mutex qi_tree_lock; 65 struct xfs_inode *qi_uquotaip; /* user quota inode */ 66 struct xfs_inode *qi_gquotaip; /* group quota inode */ 67 struct xfs_inode *qi_pquotaip; /* project quota inode */ 68 struct list_lru qi_lru; 69 int qi_dquots; 70 time_t qi_btimelimit; /* limit for blks timer */ 71 time_t qi_itimelimit; /* limit for inodes timer */ 72 time_t qi_rtbtimelimit;/* limit for rt blks timer */ 73 xfs_qwarncnt_t qi_bwarnlimit; /* limit for blks warnings */ 74 xfs_qwarncnt_t qi_iwarnlimit; /* limit for inodes warnings */ 75 xfs_qwarncnt_t qi_rtbwarnlimit;/* limit for rt blks warnings */ 76 struct mutex qi_quotaofflock;/* to serialize quotaoff */ 77 xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */ 78 uint qi_dqperchunk; /* # ondisk dqs in above chunk */ 79 xfs_qcnt_t qi_bhardlimit; /* default data blk hard limit */ 80 xfs_qcnt_t qi_bsoftlimit; /* default data blk soft limit */ 81 xfs_qcnt_t qi_ihardlimit; /* default inode count hard limit */ 82 xfs_qcnt_t qi_isoftlimit; /* default inode count soft limit */ 83 xfs_qcnt_t qi_rtbhardlimit;/* default realtime blk hard limit */ 84 xfs_qcnt_t qi_rtbsoftlimit;/* default realtime blk soft limit */ 85 struct shrinker qi_shrinker; 86 } xfs_quotainfo_t; 87 88 static inline struct radix_tree_root * 89 xfs_dquot_tree( 90 struct xfs_quotainfo *qi, 91 int type) 92 { 93 switch (type) { 94 case XFS_DQ_USER: 95 return &qi->qi_uquota_tree; 96 case XFS_DQ_GROUP: 97 return &qi->qi_gquota_tree; 98 case XFS_DQ_PROJ: 99 return &qi->qi_pquota_tree; 100 default: 101 ASSERT(0); 102 } 103 return NULL; 104 } 105 106 static inline struct xfs_inode * 107 xfs_dq_to_quota_inode(struct xfs_dquot *dqp) 108 { 109 switch (dqp->dq_flags & XFS_DQ_ALLTYPES) { 110 case XFS_DQ_USER: 111 return dqp->q_mount->m_quotainfo->qi_uquotaip; 112 case XFS_DQ_GROUP: 113 return dqp->q_mount->m_quotainfo->qi_gquotaip; 114 case XFS_DQ_PROJ: 115 return dqp->q_mount->m_quotainfo->qi_pquotaip; 116 default: 117 ASSERT(0); 118 } 119 return NULL; 120 } 121 122 extern void xfs_trans_mod_dquot(struct xfs_trans *, 123 struct xfs_dquot *, uint, long); 124 extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *, 125 struct xfs_mount *, struct xfs_dquot *, 126 struct xfs_dquot *, struct xfs_dquot *, 127 long, long, uint); 128 extern void xfs_trans_dqjoin(struct xfs_trans *, struct xfs_dquot *); 129 extern void xfs_trans_log_dquot(struct xfs_trans *, struct xfs_dquot *); 130 131 /* 132 * We keep the usr, grp, and prj dquots separately so that locking will be 133 * easier to do at commit time. All transactions that we know of at this point 134 * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value. 135 */ 136 enum { 137 XFS_QM_TRANS_USR = 0, 138 XFS_QM_TRANS_GRP, 139 XFS_QM_TRANS_PRJ, 140 XFS_QM_TRANS_DQTYPES 141 }; 142 #define XFS_QM_TRANS_MAXDQS 2 143 struct xfs_dquot_acct { 144 struct xfs_dqtrx dqs[XFS_QM_TRANS_DQTYPES][XFS_QM_TRANS_MAXDQS]; 145 }; 146 147 /* 148 * Users are allowed to have a usage exceeding their softlimit for 149 * a period this long. 150 */ 151 #define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */ 152 #define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */ 153 #define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */ 154 155 #define XFS_QM_BWARNLIMIT 5 156 #define XFS_QM_IWARNLIMIT 5 157 #define XFS_QM_RTBWARNLIMIT 5 158 159 extern void xfs_qm_destroy_quotainfo(struct xfs_mount *); 160 161 /* dquot stuff */ 162 extern void xfs_qm_dqpurge_all(struct xfs_mount *, uint); 163 extern void xfs_qm_dqrele_all_inodes(struct xfs_mount *, uint); 164 165 /* quota ops */ 166 extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint); 167 extern int xfs_qm_scall_getquota(struct xfs_mount *, xfs_dqid_t, 168 uint, struct qc_dqblk *); 169 extern int xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint, 170 struct qc_dqblk *); 171 extern int xfs_qm_scall_quotaon(struct xfs_mount *, uint); 172 extern int xfs_qm_scall_quotaoff(struct xfs_mount *, uint); 173 174 #endif /* __XFS_QM_H__ */ 175