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 struct xfs_def_quota { 57 xfs_qcnt_t bhardlimit; /* default data blk hard limit */ 58 xfs_qcnt_t bsoftlimit; /* default data blk soft limit */ 59 xfs_qcnt_t ihardlimit; /* default inode count hard limit */ 60 xfs_qcnt_t isoftlimit; /* default inode count soft limit */ 61 xfs_qcnt_t rtbhardlimit; /* default realtime blk hard limit */ 62 xfs_qcnt_t rtbsoftlimit; /* default realtime blk soft limit */ 63 }; 64 65 /* 66 * Various quota information for individual filesystems. 67 * The mount structure keeps a pointer to this. 68 */ 69 typedef struct xfs_quotainfo { 70 struct radix_tree_root qi_uquota_tree; 71 struct radix_tree_root qi_gquota_tree; 72 struct radix_tree_root qi_pquota_tree; 73 struct mutex qi_tree_lock; 74 struct xfs_inode *qi_uquotaip; /* user quota inode */ 75 struct xfs_inode *qi_gquotaip; /* group quota inode */ 76 struct xfs_inode *qi_pquotaip; /* project quota inode */ 77 struct list_lru qi_lru; 78 int qi_dquots; 79 time_t qi_btimelimit; /* limit for blks timer */ 80 time_t qi_itimelimit; /* limit for inodes timer */ 81 time_t qi_rtbtimelimit;/* limit for rt blks timer */ 82 xfs_qwarncnt_t qi_bwarnlimit; /* limit for blks warnings */ 83 xfs_qwarncnt_t qi_iwarnlimit; /* limit for inodes warnings */ 84 xfs_qwarncnt_t qi_rtbwarnlimit;/* limit for rt blks warnings */ 85 struct mutex qi_quotaofflock;/* to serialize quotaoff */ 86 xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */ 87 uint qi_dqperchunk; /* # ondisk dqs in above chunk */ 88 struct xfs_def_quota qi_usr_default; 89 struct xfs_def_quota qi_grp_default; 90 struct xfs_def_quota qi_prj_default; 91 struct shrinker qi_shrinker; 92 } xfs_quotainfo_t; 93 94 static inline struct radix_tree_root * 95 xfs_dquot_tree( 96 struct xfs_quotainfo *qi, 97 int type) 98 { 99 switch (type) { 100 case XFS_DQ_USER: 101 return &qi->qi_uquota_tree; 102 case XFS_DQ_GROUP: 103 return &qi->qi_gquota_tree; 104 case XFS_DQ_PROJ: 105 return &qi->qi_pquota_tree; 106 default: 107 ASSERT(0); 108 } 109 return NULL; 110 } 111 112 static inline struct xfs_inode * 113 xfs_quota_inode(xfs_mount_t *mp, uint dq_flags) 114 { 115 switch (dq_flags & XFS_DQ_ALLTYPES) { 116 case XFS_DQ_USER: 117 return mp->m_quotainfo->qi_uquotaip; 118 case XFS_DQ_GROUP: 119 return mp->m_quotainfo->qi_gquotaip; 120 case XFS_DQ_PROJ: 121 return mp->m_quotainfo->qi_pquotaip; 122 default: 123 ASSERT(0); 124 } 125 return NULL; 126 } 127 128 extern void xfs_trans_mod_dquot(struct xfs_trans *, 129 struct xfs_dquot *, uint, long); 130 extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *, 131 struct xfs_mount *, struct xfs_dquot *, 132 struct xfs_dquot *, struct xfs_dquot *, 133 long, long, uint); 134 extern void xfs_trans_dqjoin(struct xfs_trans *, struct xfs_dquot *); 135 extern void xfs_trans_log_dquot(struct xfs_trans *, struct xfs_dquot *); 136 137 /* 138 * We keep the usr, grp, and prj dquots separately so that locking will be 139 * easier to do at commit time. All transactions that we know of at this point 140 * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value. 141 */ 142 enum { 143 XFS_QM_TRANS_USR = 0, 144 XFS_QM_TRANS_GRP, 145 XFS_QM_TRANS_PRJ, 146 XFS_QM_TRANS_DQTYPES 147 }; 148 #define XFS_QM_TRANS_MAXDQS 2 149 struct xfs_dquot_acct { 150 struct xfs_dqtrx dqs[XFS_QM_TRANS_DQTYPES][XFS_QM_TRANS_MAXDQS]; 151 }; 152 153 /* 154 * Users are allowed to have a usage exceeding their softlimit for 155 * a period this long. 156 */ 157 #define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */ 158 #define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */ 159 #define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */ 160 161 #define XFS_QM_BWARNLIMIT 5 162 #define XFS_QM_IWARNLIMIT 5 163 #define XFS_QM_RTBWARNLIMIT 5 164 165 extern void xfs_qm_destroy_quotainfo(struct xfs_mount *); 166 167 /* dquot stuff */ 168 extern void xfs_qm_dqpurge_all(struct xfs_mount *, uint); 169 extern void xfs_qm_dqrele_all_inodes(struct xfs_mount *, uint); 170 171 /* quota ops */ 172 extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint); 173 extern int xfs_qm_scall_getquota(struct xfs_mount *, xfs_dqid_t *, 174 uint, struct qc_dqblk *, uint); 175 extern int xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint, 176 struct qc_dqblk *); 177 extern int xfs_qm_scall_quotaon(struct xfs_mount *, uint); 178 extern int xfs_qm_scall_quotaoff(struct xfs_mount *, uint); 179 180 static inline struct xfs_def_quota * 181 xfs_get_defquota(struct xfs_dquot *dqp, struct xfs_quotainfo *qi) 182 { 183 struct xfs_def_quota *defq; 184 185 if (XFS_QM_ISUDQ(dqp)) 186 defq = &qi->qi_usr_default; 187 else if (XFS_QM_ISGDQ(dqp)) 188 defq = &qi->qi_grp_default; 189 else { 190 ASSERT(XFS_QM_ISPDQ(dqp)); 191 defq = &qi->qi_prj_default; 192 } 193 return defq; 194 } 195 196 #endif /* __XFS_QM_H__ */ 197