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 mutex qi_tree_lock; 48 xfs_inode_t *qi_uquotaip; /* user quota inode */ 49 xfs_inode_t *qi_gquotaip; /* group quota inode */ 50 struct list_head qi_lru_list; 51 struct mutex qi_lru_lock; 52 int qi_lru_count; 53 int qi_dquots; 54 time_t qi_btimelimit; /* limit for blks timer */ 55 time_t qi_itimelimit; /* limit for inodes timer */ 56 time_t qi_rtbtimelimit;/* limit for rt blks timer */ 57 xfs_qwarncnt_t qi_bwarnlimit; /* limit for blks warnings */ 58 xfs_qwarncnt_t qi_iwarnlimit; /* limit for inodes warnings */ 59 xfs_qwarncnt_t qi_rtbwarnlimit;/* limit for rt blks warnings */ 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 dqs in above chunk */ 63 xfs_qcnt_t qi_bhardlimit; /* default data blk hard limit */ 64 xfs_qcnt_t qi_bsoftlimit; /* default data blk soft limit */ 65 xfs_qcnt_t qi_ihardlimit; /* default inode count hard limit */ 66 xfs_qcnt_t qi_isoftlimit; /* default inode count soft limit */ 67 xfs_qcnt_t qi_rtbhardlimit;/* default realtime blk hard limit */ 68 xfs_qcnt_t qi_rtbsoftlimit;/* default realtime blk soft limit */ 69 struct shrinker qi_shrinker; 70 } xfs_quotainfo_t; 71 72 static inline struct radix_tree_root * 73 xfs_dquot_tree( 74 struct xfs_quotainfo *qi, 75 int type) 76 { 77 switch (type) { 78 case XFS_DQ_USER: 79 return &qi->qi_uquota_tree; 80 case XFS_DQ_GROUP: 81 case XFS_DQ_PROJ: 82 return &qi->qi_gquota_tree; 83 default: 84 ASSERT(0); 85 } 86 return NULL; 87 } 88 89 static inline struct xfs_inode * 90 xfs_dq_to_quota_inode(struct xfs_dquot *dqp) 91 { 92 switch (dqp->dq_flags & XFS_DQ_ALLTYPES) { 93 case XFS_DQ_USER: 94 return dqp->q_mount->m_quotainfo->qi_uquotaip; 95 case XFS_DQ_GROUP: 96 case XFS_DQ_PROJ: 97 return dqp->q_mount->m_quotainfo->qi_gquotaip; 98 default: 99 ASSERT(0); 100 } 101 return NULL; 102 } 103 104 extern int xfs_qm_calc_dquots_per_chunk(struct xfs_mount *mp, 105 unsigned int nbblks); 106 extern void xfs_trans_mod_dquot(struct xfs_trans *, 107 struct xfs_dquot *, uint, long); 108 extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *, 109 struct xfs_mount *, struct xfs_dquot *, 110 struct xfs_dquot *, long, long, uint); 111 extern void xfs_trans_dqjoin(struct xfs_trans *, struct xfs_dquot *); 112 extern void xfs_trans_log_dquot(struct xfs_trans *, struct xfs_dquot *); 113 114 /* 115 * We keep the usr and grp dquots separately so that locking will be easier 116 * to do at commit time. All transactions that we know of at this point 117 * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value. 118 */ 119 enum { 120 XFS_QM_TRANS_USR = 0, 121 XFS_QM_TRANS_GRP, 122 XFS_QM_TRANS_DQTYPES 123 }; 124 #define XFS_QM_TRANS_MAXDQS 2 125 struct xfs_dquot_acct { 126 struct xfs_dqtrx dqs[XFS_QM_TRANS_DQTYPES][XFS_QM_TRANS_MAXDQS]; 127 }; 128 129 /* 130 * Users are allowed to have a usage exceeding their softlimit for 131 * a period this long. 132 */ 133 #define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */ 134 #define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */ 135 #define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */ 136 137 #define XFS_QM_BWARNLIMIT 5 138 #define XFS_QM_IWARNLIMIT 5 139 #define XFS_QM_RTBWARNLIMIT 5 140 141 extern void xfs_qm_destroy_quotainfo(struct xfs_mount *); 142 extern int xfs_qm_quotacheck(struct xfs_mount *); 143 extern int xfs_qm_write_sb_changes(struct xfs_mount *, __int64_t); 144 145 /* dquot stuff */ 146 extern void xfs_qm_dqpurge_all(struct xfs_mount *, uint); 147 extern void xfs_qm_dqrele_all_inodes(struct xfs_mount *, uint); 148 149 /* quota ops */ 150 extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint); 151 extern int xfs_qm_scall_getquota(struct xfs_mount *, xfs_dqid_t, 152 uint, struct fs_disk_quota *); 153 extern int xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint, 154 struct fs_disk_quota *); 155 extern int xfs_qm_scall_getqstat(struct xfs_mount *, 156 struct fs_quota_stat *); 157 extern int xfs_qm_scall_quotaon(struct xfs_mount *, uint); 158 extern int xfs_qm_scall_quotaoff(struct xfs_mount *, uint); 159 160 #endif /* __XFS_QM_H__ */ 161