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_lru qi_lru; 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 return &qi->qi_gquota_tree; 82 case XFS_DQ_PROJ: 83 return &qi->qi_pquota_tree; 84 default: 85 ASSERT(0); 86 } 87 return NULL; 88 } 89 90 static inline struct xfs_inode * 91 xfs_dq_to_quota_inode(struct xfs_dquot *dqp) 92 { 93 switch (dqp->dq_flags & XFS_DQ_ALLTYPES) { 94 case XFS_DQ_USER: 95 return dqp->q_mount->m_quotainfo->qi_uquotaip; 96 case XFS_DQ_GROUP: 97 return dqp->q_mount->m_quotainfo->qi_gquotaip; 98 case XFS_DQ_PROJ: 99 return dqp->q_mount->m_quotainfo->qi_pquotaip; 100 default: 101 ASSERT(0); 102 } 103 return NULL; 104 } 105 106 extern int xfs_qm_calc_dquots_per_chunk(struct xfs_mount *mp, 107 unsigned int nbblks); 108 extern void xfs_trans_mod_dquot(struct xfs_trans *, 109 struct xfs_dquot *, uint, long); 110 extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *, 111 struct xfs_mount *, struct xfs_dquot *, 112 struct xfs_dquot *, struct xfs_dquot *, 113 long, long, uint); 114 extern void xfs_trans_dqjoin(struct xfs_trans *, struct xfs_dquot *); 115 extern void xfs_trans_log_dquot(struct xfs_trans *, struct xfs_dquot *); 116 117 /* 118 * We keep the usr, grp, and prj dquots separately so that locking will be 119 * easier to do at commit time. All transactions that we know of at this point 120 * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value. 121 */ 122 enum { 123 XFS_QM_TRANS_USR = 0, 124 XFS_QM_TRANS_GRP, 125 XFS_QM_TRANS_PRJ, 126 XFS_QM_TRANS_DQTYPES 127 }; 128 #define XFS_QM_TRANS_MAXDQS 2 129 struct xfs_dquot_acct { 130 struct xfs_dqtrx dqs[XFS_QM_TRANS_DQTYPES][XFS_QM_TRANS_MAXDQS]; 131 }; 132 133 /* 134 * Users are allowed to have a usage exceeding their softlimit for 135 * a period this long. 136 */ 137 #define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */ 138 #define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */ 139 #define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */ 140 141 #define XFS_QM_BWARNLIMIT 5 142 #define XFS_QM_IWARNLIMIT 5 143 #define XFS_QM_RTBWARNLIMIT 5 144 145 extern void xfs_qm_destroy_quotainfo(struct xfs_mount *); 146 extern int xfs_qm_quotacheck(struct xfs_mount *); 147 extern int xfs_qm_write_sb_changes(struct xfs_mount *, __int64_t); 148 149 /* dquot stuff */ 150 extern void xfs_qm_dqpurge_all(struct xfs_mount *, uint); 151 extern void xfs_qm_dqrele_all_inodes(struct xfs_mount *, uint); 152 153 /* quota ops */ 154 extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint); 155 extern int xfs_qm_scall_getquota(struct xfs_mount *, xfs_dqid_t, 156 uint, struct fs_disk_quota *); 157 extern int xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint, 158 struct fs_disk_quota *); 159 extern int xfs_qm_scall_getqstat(struct xfs_mount *, 160 struct fs_quota_stat *); 161 extern int xfs_qm_scall_getqstatv(struct xfs_mount *, 162 struct fs_quota_statv *); 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