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_QUOTA_H__ 19 #define __XFS_QUOTA_H__ 20 21 #include "xfs_quota_defs.h" 22 23 /* 24 * Kernel only quota definitions and functions 25 */ 26 27 struct xfs_trans; 28 29 /* 30 * This check is done typically without holding the inode lock; 31 * that may seem racy, but it is harmless in the context that it is used. 32 * The inode cannot go inactive as long a reference is kept, and 33 * therefore if dquot(s) were attached, they'll stay consistent. 34 * If, for example, the ownership of the inode changes while 35 * we didn't have the inode locked, the appropriate dquot(s) will be 36 * attached atomically. 37 */ 38 #define XFS_NOT_DQATTACHED(mp, ip) \ 39 ((XFS_IS_UQUOTA_ON(mp) && (ip)->i_udquot == NULL) || \ 40 (XFS_IS_GQUOTA_ON(mp) && (ip)->i_gdquot == NULL) || \ 41 (XFS_IS_PQUOTA_ON(mp) && (ip)->i_pdquot == NULL)) 42 43 #define XFS_QM_NEED_QUOTACHECK(mp) \ 44 ((XFS_IS_UQUOTA_ON(mp) && \ 45 (mp->m_sb.sb_qflags & XFS_UQUOTA_CHKD) == 0) || \ 46 (XFS_IS_GQUOTA_ON(mp) && \ 47 (mp->m_sb.sb_qflags & XFS_GQUOTA_CHKD) == 0) || \ 48 (XFS_IS_PQUOTA_ON(mp) && \ 49 (mp->m_sb.sb_qflags & XFS_PQUOTA_CHKD) == 0)) 50 51 /* 52 * The structure kept inside the xfs_trans_t keep track of dquot changes 53 * within a transaction and apply them later. 54 */ 55 typedef struct xfs_dqtrx { 56 struct xfs_dquot *qt_dquot; /* the dquot this refers to */ 57 ulong qt_blk_res; /* blks reserved on a dquot */ 58 ulong qt_blk_res_used; /* blks used from the reservation */ 59 ulong qt_ino_res; /* inode reserved on a dquot */ 60 ulong qt_ino_res_used; /* inodes used from the reservation */ 61 long qt_bcount_delta; /* dquot blk count changes */ 62 long qt_delbcnt_delta; /* delayed dquot blk count changes */ 63 long qt_icount_delta; /* dquot inode count changes */ 64 ulong qt_rtblk_res; /* # blks reserved on a dquot */ 65 ulong qt_rtblk_res_used;/* # blks used from reservation */ 66 long qt_rtbcount_delta;/* dquot realtime blk changes */ 67 long qt_delrtb_delta; /* delayed RT blk count changes */ 68 } xfs_dqtrx_t; 69 70 #ifdef CONFIG_XFS_QUOTA 71 extern void xfs_trans_dup_dqinfo(struct xfs_trans *, struct xfs_trans *); 72 extern void xfs_trans_free_dqinfo(struct xfs_trans *); 73 extern void xfs_trans_mod_dquot_byino(struct xfs_trans *, struct xfs_inode *, 74 uint, long); 75 extern void xfs_trans_apply_dquot_deltas(struct xfs_trans *); 76 extern void xfs_trans_unreserve_and_mod_dquots(struct xfs_trans *); 77 extern int xfs_trans_reserve_quota_nblks(struct xfs_trans *, 78 struct xfs_inode *, long, long, uint); 79 extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *, 80 struct xfs_mount *, struct xfs_dquot *, 81 struct xfs_dquot *, struct xfs_dquot *, long, long, uint); 82 83 extern int xfs_qm_vop_dqalloc(struct xfs_inode *, xfs_dqid_t, xfs_dqid_t, 84 prid_t, uint, struct xfs_dquot **, struct xfs_dquot **, 85 struct xfs_dquot **); 86 extern void xfs_qm_vop_create_dqattach(struct xfs_trans *, struct xfs_inode *, 87 struct xfs_dquot *, struct xfs_dquot *, struct xfs_dquot *); 88 extern int xfs_qm_vop_rename_dqattach(struct xfs_inode **); 89 extern struct xfs_dquot *xfs_qm_vop_chown(struct xfs_trans *, 90 struct xfs_inode *, struct xfs_dquot **, struct xfs_dquot *); 91 extern int xfs_qm_vop_chown_reserve(struct xfs_trans *, struct xfs_inode *, 92 struct xfs_dquot *, struct xfs_dquot *, 93 struct xfs_dquot *, uint); 94 extern int xfs_qm_dqattach(struct xfs_inode *, uint); 95 extern int xfs_qm_dqattach_locked(struct xfs_inode *, uint); 96 extern void xfs_qm_dqdetach(struct xfs_inode *); 97 extern void xfs_qm_dqrele(struct xfs_dquot *); 98 extern void xfs_qm_statvfs(struct xfs_inode *, struct kstatfs *); 99 extern int xfs_qm_newmount(struct xfs_mount *, uint *, uint *); 100 extern void xfs_qm_mount_quotas(struct xfs_mount *); 101 extern void xfs_qm_unmount(struct xfs_mount *); 102 extern void xfs_qm_unmount_quotas(struct xfs_mount *); 103 104 #else 105 static inline int 106 xfs_qm_vop_dqalloc(struct xfs_inode *ip, xfs_dqid_t uid, xfs_dqid_t gid, 107 prid_t prid, uint flags, struct xfs_dquot **udqp, 108 struct xfs_dquot **gdqp, struct xfs_dquot **pdqp) 109 { 110 *udqp = NULL; 111 *gdqp = NULL; 112 *pdqp = NULL; 113 return 0; 114 } 115 #define xfs_trans_dup_dqinfo(tp, tp2) 116 #define xfs_trans_free_dqinfo(tp) 117 #define xfs_trans_mod_dquot_byino(tp, ip, fields, delta) 118 #define xfs_trans_apply_dquot_deltas(tp) 119 #define xfs_trans_unreserve_and_mod_dquots(tp) 120 static inline int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp, 121 struct xfs_inode *ip, long nblks, long ninos, uint flags) 122 { 123 return 0; 124 } 125 static inline int xfs_trans_reserve_quota_bydquots(struct xfs_trans *tp, 126 struct xfs_mount *mp, struct xfs_dquot *udqp, 127 struct xfs_dquot *gdqp, struct xfs_dquot *pdqp, 128 long nblks, long nions, uint flags) 129 { 130 return 0; 131 } 132 #define xfs_qm_vop_create_dqattach(tp, ip, u, g, p) 133 #define xfs_qm_vop_rename_dqattach(it) (0) 134 #define xfs_qm_vop_chown(tp, ip, old, new) (NULL) 135 #define xfs_qm_vop_chown_reserve(tp, ip, u, g, p, fl) (0) 136 #define xfs_qm_dqattach(ip, fl) (0) 137 #define xfs_qm_dqattach_locked(ip, fl) (0) 138 #define xfs_qm_dqdetach(ip) 139 #define xfs_qm_dqrele(d) 140 #define xfs_qm_statvfs(ip, s) 141 #define xfs_qm_newmount(mp, a, b) (0) 142 #define xfs_qm_mount_quotas(mp) 143 #define xfs_qm_unmount(mp) 144 #define xfs_qm_unmount_quotas(mp) 145 #endif /* CONFIG_XFS_QUOTA */ 146 147 #define xfs_trans_unreserve_quota_nblks(tp, ip, nblks, ninos, flags) \ 148 xfs_trans_reserve_quota_nblks(tp, ip, -(nblks), -(ninos), flags) 149 #define xfs_trans_reserve_quota(tp, mp, ud, gd, pd, nb, ni, f) \ 150 xfs_trans_reserve_quota_bydquots(tp, mp, ud, gd, pd, nb, ni, \ 151 f | XFS_QMOPT_RES_REGBLKS) 152 153 extern int xfs_mount_reset_sbqflags(struct xfs_mount *); 154 155 #endif /* __XFS_QUOTA_H__ */ 156