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-rw-r--r--fs/xfs/xfs_quota.h183
1 files changed, 183 insertions, 0 deletions
diff --git a/fs/xfs/xfs_quota.h b/fs/xfs/xfs_quota.h
new file mode 100644
index 000000000..dcc785fdd
--- /dev/null
+++ b/fs/xfs/xfs_quota.h
@@ -0,0 +1,183 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc.
+ * All Rights Reserved.
+ */
+#ifndef __XFS_QUOTA_H__
+#define __XFS_QUOTA_H__
+
+#include "xfs_quota_defs.h"
+
+/*
+ * Kernel only quota definitions and functions
+ */
+
+struct xfs_trans;
+struct xfs_buf;
+
+/*
+ * This check is done typically without holding the inode lock;
+ * that may seem racy, but it is harmless in the context that it is used.
+ * The inode cannot go inactive as long a reference is kept, and
+ * therefore if dquot(s) were attached, they'll stay consistent.
+ * If, for example, the ownership of the inode changes while
+ * we didn't have the inode locked, the appropriate dquot(s) will be
+ * attached atomically.
+ */
+#define XFS_NOT_DQATTACHED(mp, ip) \
+ ((XFS_IS_UQUOTA_ON(mp) && (ip)->i_udquot == NULL) || \
+ (XFS_IS_GQUOTA_ON(mp) && (ip)->i_gdquot == NULL) || \
+ (XFS_IS_PQUOTA_ON(mp) && (ip)->i_pdquot == NULL))
+
+#define XFS_QM_NEED_QUOTACHECK(mp) \
+ ((XFS_IS_UQUOTA_ON(mp) && \
+ (mp->m_sb.sb_qflags & XFS_UQUOTA_CHKD) == 0) || \
+ (XFS_IS_GQUOTA_ON(mp) && \
+ (mp->m_sb.sb_qflags & XFS_GQUOTA_CHKD) == 0) || \
+ (XFS_IS_PQUOTA_ON(mp) && \
+ (mp->m_sb.sb_qflags & XFS_PQUOTA_CHKD) == 0))
+
+static inline uint
+xfs_quota_chkd_flag(
+ xfs_dqtype_t type)
+{
+ switch (type) {
+ case XFS_DQTYPE_USER:
+ return XFS_UQUOTA_CHKD;
+ case XFS_DQTYPE_GROUP:
+ return XFS_GQUOTA_CHKD;
+ case XFS_DQTYPE_PROJ:
+ return XFS_PQUOTA_CHKD;
+ default:
+ return 0;
+ }
+}
+
+/*
+ * The structure kept inside the xfs_trans_t keep track of dquot changes
+ * within a transaction and apply them later.
+ */
+struct xfs_dqtrx {
+ struct xfs_dquot *qt_dquot; /* the dquot this refers to */
+
+ uint64_t qt_blk_res; /* blks reserved on a dquot */
+ int64_t qt_bcount_delta; /* dquot blk count changes */
+ int64_t qt_delbcnt_delta; /* delayed dquot blk count changes */
+
+ uint64_t qt_rtblk_res; /* # blks reserved on a dquot */
+ uint64_t qt_rtblk_res_used;/* # blks used from reservation */
+ int64_t qt_rtbcount_delta;/* dquot realtime blk changes */
+ int64_t qt_delrtb_delta; /* delayed RT blk count changes */
+
+ uint64_t qt_ino_res; /* inode reserved on a dquot */
+ uint64_t qt_ino_res_used; /* inodes used from the reservation */
+ int64_t qt_icount_delta; /* dquot inode count changes */
+};
+
+#ifdef CONFIG_XFS_QUOTA
+extern void xfs_trans_dup_dqinfo(struct xfs_trans *, struct xfs_trans *);
+extern void xfs_trans_free_dqinfo(struct xfs_trans *);
+extern void xfs_trans_mod_dquot_byino(struct xfs_trans *, struct xfs_inode *,
+ uint, int64_t);
+extern void xfs_trans_apply_dquot_deltas(struct xfs_trans *);
+extern void xfs_trans_unreserve_and_mod_dquots(struct xfs_trans *);
+int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp, struct xfs_inode *ip,
+ int64_t dblocks, int64_t rblocks, bool force);
+extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *,
+ struct xfs_mount *, struct xfs_dquot *,
+ struct xfs_dquot *, struct xfs_dquot *, int64_t, long, uint);
+int xfs_trans_reserve_quota_icreate(struct xfs_trans *tp,
+ struct xfs_dquot *udqp, struct xfs_dquot *gdqp,
+ struct xfs_dquot *pdqp, int64_t dblocks);
+
+extern int xfs_qm_vop_dqalloc(struct xfs_inode *, kuid_t, kgid_t,
+ prid_t, uint, struct xfs_dquot **, struct xfs_dquot **,
+ struct xfs_dquot **);
+extern void xfs_qm_vop_create_dqattach(struct xfs_trans *, struct xfs_inode *,
+ struct xfs_dquot *, struct xfs_dquot *, struct xfs_dquot *);
+extern int xfs_qm_vop_rename_dqattach(struct xfs_inode **);
+extern struct xfs_dquot *xfs_qm_vop_chown(struct xfs_trans *,
+ struct xfs_inode *, struct xfs_dquot **, struct xfs_dquot *);
+extern int xfs_qm_dqattach(struct xfs_inode *);
+extern int xfs_qm_dqattach_locked(struct xfs_inode *ip, bool doalloc);
+extern void xfs_qm_dqdetach(struct xfs_inode *);
+extern void xfs_qm_dqrele(struct xfs_dquot *);
+extern void xfs_qm_statvfs(struct xfs_inode *, struct kstatfs *);
+extern int xfs_qm_newmount(struct xfs_mount *, uint *, uint *);
+extern void xfs_qm_mount_quotas(struct xfs_mount *);
+extern void xfs_qm_unmount(struct xfs_mount *);
+extern void xfs_qm_unmount_quotas(struct xfs_mount *);
+
+static inline int
+xfs_quota_reserve_blkres(struct xfs_inode *ip, int64_t blocks)
+{
+ return xfs_trans_reserve_quota_nblks(NULL, ip, blocks, 0, false);
+}
+bool xfs_inode_near_dquot_enforcement(struct xfs_inode *ip, xfs_dqtype_t type);
+#else
+static inline int
+xfs_qm_vop_dqalloc(struct xfs_inode *ip, kuid_t kuid, kgid_t kgid,
+ prid_t prid, uint flags, struct xfs_dquot **udqp,
+ struct xfs_dquot **gdqp, struct xfs_dquot **pdqp)
+{
+ *udqp = NULL;
+ *gdqp = NULL;
+ *pdqp = NULL;
+ return 0;
+}
+#define xfs_trans_dup_dqinfo(tp, tp2)
+#define xfs_trans_free_dqinfo(tp)
+#define xfs_trans_mod_dquot_byino(tp, ip, fields, delta) do { } while (0)
+#define xfs_trans_apply_dquot_deltas(tp)
+#define xfs_trans_unreserve_and_mod_dquots(tp)
+static inline int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp,
+ struct xfs_inode *ip, int64_t dblocks, int64_t rblocks,
+ bool force)
+{
+ return 0;
+}
+static inline int xfs_trans_reserve_quota_bydquots(struct xfs_trans *tp,
+ struct xfs_mount *mp, struct xfs_dquot *udqp,
+ struct xfs_dquot *gdqp, struct xfs_dquot *pdqp,
+ int64_t nblks, long nions, uint flags)
+{
+ return 0;
+}
+
+static inline int
+xfs_quota_reserve_blkres(struct xfs_inode *ip, int64_t blocks)
+{
+ return 0;
+}
+
+static inline int
+xfs_trans_reserve_quota_icreate(struct xfs_trans *tp, struct xfs_dquot *udqp,
+ struct xfs_dquot *gdqp, struct xfs_dquot *pdqp, int64_t dblocks)
+{
+ return 0;
+}
+
+#define xfs_qm_vop_create_dqattach(tp, ip, u, g, p)
+#define xfs_qm_vop_rename_dqattach(it) (0)
+#define xfs_qm_vop_chown(tp, ip, old, new) (NULL)
+#define xfs_qm_dqattach(ip) (0)
+#define xfs_qm_dqattach_locked(ip, fl) (0)
+#define xfs_qm_dqdetach(ip)
+#define xfs_qm_dqrele(d) do { (d) = (d); } while(0)
+#define xfs_qm_statvfs(ip, s) do { } while(0)
+#define xfs_qm_newmount(mp, a, b) (0)
+#define xfs_qm_mount_quotas(mp)
+#define xfs_qm_unmount(mp)
+#define xfs_qm_unmount_quotas(mp)
+#define xfs_inode_near_dquot_enforcement(ip, type) (false)
+#endif /* CONFIG_XFS_QUOTA */
+
+static inline int
+xfs_quota_unreserve_blkres(struct xfs_inode *ip, int64_t blocks)
+{
+ return xfs_quota_reserve_blkres(ip, -blocks);
+}
+
+extern int xfs_mount_reset_sbqflags(struct xfs_mount *);
+
+#endif /* __XFS_QUOTA_H__ */