1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2000-2005 Silicon Graphics, Inc. 4 * All Rights Reserved. 5 */ 6 #ifndef __XFS_QUOTA_H__ 7 #define __XFS_QUOTA_H__ 8 9 #include "xfs_quota_defs.h" 10 11 /* 12 * Kernel only quota definitions and functions 13 */ 14 15 struct xfs_trans; 16 struct xfs_buf; 17 18 /* 19 * This check is done typically without holding the inode lock; 20 * that may seem racy, but it is harmless in the context that it is used. 21 * The inode cannot go inactive as long a reference is kept, and 22 * therefore if dquot(s) were attached, they'll stay consistent. 23 * If, for example, the ownership of the inode changes while 24 * we didn't have the inode locked, the appropriate dquot(s) will be 25 * attached atomically. 26 */ 27 #define XFS_NOT_DQATTACHED(mp, ip) \ 28 ((XFS_IS_UQUOTA_ON(mp) && (ip)->i_udquot == NULL) || \ 29 (XFS_IS_GQUOTA_ON(mp) && (ip)->i_gdquot == NULL) || \ 30 (XFS_IS_PQUOTA_ON(mp) && (ip)->i_pdquot == NULL)) 31 32 #define XFS_QM_NEED_QUOTACHECK(mp) \ 33 ((XFS_IS_UQUOTA_ON(mp) && \ 34 (mp->m_sb.sb_qflags & XFS_UQUOTA_CHKD) == 0) || \ 35 (XFS_IS_GQUOTA_ON(mp) && \ 36 (mp->m_sb.sb_qflags & XFS_GQUOTA_CHKD) == 0) || \ 37 (XFS_IS_PQUOTA_ON(mp) && \ 38 (mp->m_sb.sb_qflags & XFS_PQUOTA_CHKD) == 0)) 39 40 static inline uint 41 xfs_quota_chkd_flag( 42 xfs_dqtype_t type) 43 { 44 switch (type) { 45 case XFS_DQTYPE_USER: 46 return XFS_UQUOTA_CHKD; 47 case XFS_DQTYPE_GROUP: 48 return XFS_GQUOTA_CHKD; 49 case XFS_DQTYPE_PROJ: 50 return XFS_PQUOTA_CHKD; 51 default: 52 return 0; 53 } 54 } 55 56 /* 57 * The structure kept inside the xfs_trans_t keep track of dquot changes 58 * within a transaction and apply them later. 59 */ 60 struct xfs_dqtrx { 61 struct xfs_dquot *qt_dquot; /* the dquot this refers to */ 62 63 uint64_t qt_blk_res; /* blks reserved on a dquot */ 64 int64_t qt_bcount_delta; /* dquot blk count changes */ 65 int64_t qt_delbcnt_delta; /* delayed dquot blk count changes */ 66 67 uint64_t qt_rtblk_res; /* # blks reserved on a dquot */ 68 uint64_t qt_rtblk_res_used;/* # blks used from reservation */ 69 int64_t qt_rtbcount_delta;/* dquot realtime blk changes */ 70 int64_t qt_delrtb_delta; /* delayed RT blk count changes */ 71 72 uint64_t qt_ino_res; /* inode reserved on a dquot */ 73 uint64_t qt_ino_res_used; /* inodes used from the reservation */ 74 int64_t qt_icount_delta; /* dquot inode count changes */ 75 }; 76 77 #ifdef CONFIG_XFS_QUOTA 78 extern void xfs_trans_dup_dqinfo(struct xfs_trans *, struct xfs_trans *); 79 extern void xfs_trans_free_dqinfo(struct xfs_trans *); 80 extern void xfs_trans_mod_dquot_byino(struct xfs_trans *, struct xfs_inode *, 81 uint, int64_t); 82 extern void xfs_trans_apply_dquot_deltas(struct xfs_trans *); 83 extern void xfs_trans_unreserve_and_mod_dquots(struct xfs_trans *); 84 extern int xfs_trans_reserve_quota_nblks(struct xfs_trans *, 85 struct xfs_inode *, int64_t, long, uint); 86 extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *, 87 struct xfs_mount *, struct xfs_dquot *, 88 struct xfs_dquot *, struct xfs_dquot *, int64_t, long, uint); 89 90 extern int xfs_qm_vop_dqalloc(struct xfs_inode *, kuid_t, kgid_t, 91 prid_t, uint, struct xfs_dquot **, struct xfs_dquot **, 92 struct xfs_dquot **); 93 extern void xfs_qm_vop_create_dqattach(struct xfs_trans *, struct xfs_inode *, 94 struct xfs_dquot *, struct xfs_dquot *, struct xfs_dquot *); 95 extern int xfs_qm_vop_rename_dqattach(struct xfs_inode **); 96 extern struct xfs_dquot *xfs_qm_vop_chown(struct xfs_trans *, 97 struct xfs_inode *, struct xfs_dquot **, struct xfs_dquot *); 98 extern int xfs_qm_vop_chown_reserve(struct xfs_trans *, struct xfs_inode *, 99 struct xfs_dquot *, struct xfs_dquot *, 100 struct xfs_dquot *, uint); 101 extern int xfs_qm_dqattach(struct xfs_inode *); 102 extern int xfs_qm_dqattach_locked(struct xfs_inode *ip, bool doalloc); 103 extern void xfs_qm_dqdetach(struct xfs_inode *); 104 extern void xfs_qm_dqrele(struct xfs_dquot *); 105 extern void xfs_qm_statvfs(struct xfs_inode *, struct kstatfs *); 106 extern int xfs_qm_newmount(struct xfs_mount *, uint *, uint *); 107 extern void xfs_qm_mount_quotas(struct xfs_mount *); 108 extern void xfs_qm_unmount(struct xfs_mount *); 109 extern void xfs_qm_unmount_quotas(struct xfs_mount *); 110 111 #else 112 static inline int 113 xfs_qm_vop_dqalloc(struct xfs_inode *ip, kuid_t kuid, kgid_t kgid, 114 prid_t prid, uint flags, struct xfs_dquot **udqp, 115 struct xfs_dquot **gdqp, struct xfs_dquot **pdqp) 116 { 117 *udqp = NULL; 118 *gdqp = NULL; 119 *pdqp = NULL; 120 return 0; 121 } 122 #define xfs_trans_dup_dqinfo(tp, tp2) 123 #define xfs_trans_free_dqinfo(tp) 124 #define xfs_trans_mod_dquot_byino(tp, ip, fields, delta) 125 #define xfs_trans_apply_dquot_deltas(tp) 126 #define xfs_trans_unreserve_and_mod_dquots(tp) 127 static inline int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp, 128 struct xfs_inode *ip, int64_t nblks, long ninos, uint flags) 129 { 130 return 0; 131 } 132 static inline int xfs_trans_reserve_quota_bydquots(struct xfs_trans *tp, 133 struct xfs_mount *mp, struct xfs_dquot *udqp, 134 struct xfs_dquot *gdqp, struct xfs_dquot *pdqp, 135 int64_t nblks, long nions, uint flags) 136 { 137 return 0; 138 } 139 #define xfs_qm_vop_create_dqattach(tp, ip, u, g, p) 140 #define xfs_qm_vop_rename_dqattach(it) (0) 141 #define xfs_qm_vop_chown(tp, ip, old, new) (NULL) 142 #define xfs_qm_vop_chown_reserve(tp, ip, u, g, p, fl) (0) 143 #define xfs_qm_dqattach(ip) (0) 144 #define xfs_qm_dqattach_locked(ip, fl) (0) 145 #define xfs_qm_dqdetach(ip) 146 #define xfs_qm_dqrele(d) 147 #define xfs_qm_statvfs(ip, s) 148 #define xfs_qm_newmount(mp, a, b) (0) 149 #define xfs_qm_mount_quotas(mp) 150 #define xfs_qm_unmount(mp) 151 #define xfs_qm_unmount_quotas(mp) 152 #endif /* CONFIG_XFS_QUOTA */ 153 154 #define xfs_trans_unreserve_quota_nblks(tp, ip, nblks, ninos, flags) \ 155 xfs_trans_reserve_quota_nblks(tp, ip, -(nblks), -(ninos), flags) 156 #define xfs_trans_reserve_quota(tp, mp, ud, gd, pd, nb, ni, f) \ 157 xfs_trans_reserve_quota_bydquots(tp, mp, ud, gd, pd, nb, ni, \ 158 f | XFS_QMOPT_RES_REGBLKS) 159 160 extern int xfs_mount_reset_sbqflags(struct xfs_mount *); 161 162 #endif /* __XFS_QUOTA_H__ */ 163