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 #include "xfs_quota_priv.h" 24 25 struct xfs_inode; 26 27 extern struct kmem_zone *xfs_qm_dqtrxzone; 28 29 /* 30 * This defines the unit of allocation of dquots. 31 * Currently, it is just one file system block, and a 4K blk contains 30 32 * (136 * 30 = 4080) dquots. It's probably not worth trying to make 33 * this more dynamic. 34 * XXXsup However, if this number is changed, we have to make sure that we don't 35 * implicitly assume that we do allocations in chunks of a single filesystem 36 * block in the dquot/xqm code. 37 */ 38 #define XFS_DQUOT_CLUSTER_SIZE_FSB (xfs_filblks_t)1 39 40 /* 41 * Various quota information for individual filesystems. 42 * The mount structure keeps a pointer to this. 43 */ 44 typedef struct xfs_quotainfo { 45 struct radix_tree_root qi_uquota_tree; 46 struct radix_tree_root qi_gquota_tree; 47 struct radix_tree_root qi_pquota_tree; 48 struct mutex qi_tree_lock; 49 struct xfs_inode *qi_uquotaip; /* user quota inode */ 50 struct xfs_inode *qi_gquotaip; /* group quota inode */ 51 struct xfs_inode *qi_pquotaip; /* project quota inode */ 52 struct list_head qi_lru_list; 53 struct mutex qi_lru_lock; 54 int qi_lru_count; 55 int qi_dquots; 56 time_t qi_btimelimit; /* limit for blks timer */ 57 time_t qi_itimelimit; /* limit for inodes timer */ 58 time_t qi_rtbtimelimit;/* limit for rt blks timer */ 59 xfs_qwarncnt_t qi_bwarnlimit; /* limit for blks warnings */ 60 xfs_qwarncnt_t qi_iwarnlimit; /* limit for inodes warnings */ 61 xfs_qwarncnt_t qi_rtbwarnlimit;/* limit for rt blks warnings */ 62 struct mutex qi_quotaofflock;/* to serialize quotaoff */ 63 xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */ 64 uint qi_dqperchunk; /* # ondisk dqs in above chunk */ 65 xfs_qcnt_t qi_bhardlimit; /* default data blk hard limit */ 66 xfs_qcnt_t qi_bsoftlimit; /* default data blk soft limit */ 67 xfs_qcnt_t qi_ihardlimit; /* default inode count hard limit */ 68 xfs_qcnt_t qi_isoftlimit; /* default inode count soft limit */ 69 xfs_qcnt_t qi_rtbhardlimit;/* default realtime blk hard limit */ 70 xfs_qcnt_t qi_rtbsoftlimit;/* default realtime blk soft limit */ 71 struct shrinker qi_shrinker; 72 } xfs_quotainfo_t; 73 74 static inline struct radix_tree_root * 75 xfs_dquot_tree( 76 struct xfs_quotainfo *qi, 77 int type) 78 { 79 switch (type) { 80 case XFS_DQ_USER: 81 return &qi->qi_uquota_tree; 82 case XFS_DQ_GROUP: 83 return &qi->qi_gquota_tree; 84 case XFS_DQ_PROJ: 85 return &qi->qi_pquota_tree; 86 default: 87 ASSERT(0); 88 } 89 return NULL; 90 } 91 92 static inline struct xfs_inode * 93 xfs_dq_to_quota_inode(struct xfs_dquot *dqp) 94 { 95 switch (dqp->dq_flags & XFS_DQ_ALLTYPES) { 96 case XFS_DQ_USER: 97 return dqp->q_mount->m_quotainfo->qi_uquotaip; 98 case XFS_DQ_GROUP: 99 return dqp->q_mount->m_quotainfo->qi_gquotaip; 100 case XFS_DQ_PROJ: 101 return dqp->q_mount->m_quotainfo->qi_pquotaip; 102 default: 103 ASSERT(0); 104 } 105 return NULL; 106 } 107 108 extern int xfs_qm_calc_dquots_per_chunk(struct xfs_mount *mp, 109 unsigned int nbblks); 110 extern void xfs_trans_mod_dquot(struct xfs_trans *, 111 struct xfs_dquot *, uint, long); 112 extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *, 113 struct xfs_mount *, struct xfs_dquot *, 114 struct xfs_dquot *, struct xfs_dquot *, 115 long, long, uint); 116 extern void xfs_trans_dqjoin(struct xfs_trans *, struct xfs_dquot *); 117 extern void xfs_trans_log_dquot(struct xfs_trans *, struct xfs_dquot *); 118 119 /* 120 * We keep the usr, grp, and prj dquots separately so that locking will be 121 * easier to do at commit time. All transactions that we know of at this point 122 * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value. 123 */ 124 enum { 125 XFS_QM_TRANS_USR = 0, 126 XFS_QM_TRANS_GRP, 127 XFS_QM_TRANS_PRJ, 128 XFS_QM_TRANS_DQTYPES 129 }; 130 #define XFS_QM_TRANS_MAXDQS 2 131 struct xfs_dquot_acct { 132 struct xfs_dqtrx dqs[XFS_QM_TRANS_DQTYPES][XFS_QM_TRANS_MAXDQS]; 133 }; 134 135 /* 136 * Users are allowed to have a usage exceeding their softlimit for 137 * a period this long. 138 */ 139 #define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */ 140 #define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */ 141 #define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */ 142 143 #define XFS_QM_BWARNLIMIT 5 144 #define XFS_QM_IWARNLIMIT 5 145 #define XFS_QM_RTBWARNLIMIT 5 146 147 extern void xfs_qm_destroy_quotainfo(struct xfs_mount *); 148 extern int xfs_qm_quotacheck(struct xfs_mount *); 149 extern int xfs_qm_write_sb_changes(struct xfs_mount *, __int64_t); 150 151 /* dquot stuff */ 152 extern void xfs_qm_dqpurge_all(struct xfs_mount *, uint); 153 extern void xfs_qm_dqrele_all_inodes(struct xfs_mount *, uint); 154 155 /* quota ops */ 156 extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint); 157 extern int xfs_qm_scall_getquota(struct xfs_mount *, xfs_dqid_t, 158 uint, struct fs_disk_quota *); 159 extern int xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint, 160 struct fs_disk_quota *); 161 extern int xfs_qm_scall_getqstat(struct xfs_mount *, 162 struct fs_quota_stat *); 163 extern int xfs_qm_scall_quotaon(struct xfs_mount *, uint); 164 extern int xfs_qm_scall_quotaoff(struct xfs_mount *, uint); 165 166 #endif /* __XFS_QM_H__ */ 167