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