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-rw-r--r--fs/xfs/xfs_qm.h171
1 files changed, 171 insertions, 0 deletions
diff --git a/fs/xfs/xfs_qm.h b/fs/xfs/xfs_qm.h
new file mode 100644
index 000000000..9683f0457
--- /dev/null
+++ b/fs/xfs/xfs_qm.h
@@ -0,0 +1,171 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc.
+ * All Rights Reserved.
+ */
+#ifndef __XFS_QM_H__
+#define __XFS_QM_H__
+
+#include "xfs_dquot_item.h"
+#include "xfs_dquot.h"
+
+struct xfs_inode;
+
+extern struct kmem_cache *xfs_dqtrx_cache;
+
+/*
+ * Number of bmaps that we ask from bmapi when doing a quotacheck.
+ * We make this restriction to keep the memory usage to a minimum.
+ */
+#define XFS_DQITER_MAP_SIZE 10
+
+#define XFS_IS_DQUOT_UNINITIALIZED(dqp) ( \
+ !dqp->q_blk.hardlimit && \
+ !dqp->q_blk.softlimit && \
+ !dqp->q_rtb.hardlimit && \
+ !dqp->q_rtb.softlimit && \
+ !dqp->q_ino.hardlimit && \
+ !dqp->q_ino.softlimit && \
+ !dqp->q_blk.count && \
+ !dqp->q_rtb.count && \
+ !dqp->q_ino.count)
+
+struct xfs_quota_limits {
+ xfs_qcnt_t hard; /* default hard limit */
+ xfs_qcnt_t soft; /* default soft limit */
+ time64_t time; /* limit for timers */
+};
+
+/* Defaults for each quota type: time limits, warn limits, usage limits */
+struct xfs_def_quota {
+ struct xfs_quota_limits blk;
+ struct xfs_quota_limits ino;
+ struct xfs_quota_limits rtb;
+};
+
+/*
+ * Various quota information for individual filesystems.
+ * The mount structure keeps a pointer to this.
+ */
+struct xfs_quotainfo {
+ struct radix_tree_root qi_uquota_tree;
+ struct radix_tree_root qi_gquota_tree;
+ struct radix_tree_root qi_pquota_tree;
+ struct mutex qi_tree_lock;
+ struct xfs_inode *qi_uquotaip; /* user quota inode */
+ struct xfs_inode *qi_gquotaip; /* group quota inode */
+ struct xfs_inode *qi_pquotaip; /* project quota inode */
+ struct list_lru qi_lru;
+ int qi_dquots;
+ struct mutex qi_quotaofflock;/* to serialize quotaoff */
+ xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */
+ uint qi_dqperchunk; /* # ondisk dq in above chunk */
+ struct xfs_def_quota qi_usr_default;
+ struct xfs_def_quota qi_grp_default;
+ struct xfs_def_quota qi_prj_default;
+ struct shrinker qi_shrinker;
+
+ /* Minimum and maximum quota expiration timestamp values. */
+ time64_t qi_expiry_min;
+ time64_t qi_expiry_max;
+};
+
+static inline struct radix_tree_root *
+xfs_dquot_tree(
+ struct xfs_quotainfo *qi,
+ xfs_dqtype_t type)
+{
+ switch (type) {
+ case XFS_DQTYPE_USER:
+ return &qi->qi_uquota_tree;
+ case XFS_DQTYPE_GROUP:
+ return &qi->qi_gquota_tree;
+ case XFS_DQTYPE_PROJ:
+ return &qi->qi_pquota_tree;
+ default:
+ ASSERT(0);
+ }
+ return NULL;
+}
+
+static inline struct xfs_inode *
+xfs_quota_inode(struct xfs_mount *mp, xfs_dqtype_t type)
+{
+ switch (type) {
+ case XFS_DQTYPE_USER:
+ return mp->m_quotainfo->qi_uquotaip;
+ case XFS_DQTYPE_GROUP:
+ return mp->m_quotainfo->qi_gquotaip;
+ case XFS_DQTYPE_PROJ:
+ return mp->m_quotainfo->qi_pquotaip;
+ default:
+ ASSERT(0);
+ }
+ return NULL;
+}
+
+extern void xfs_trans_mod_dquot(struct xfs_trans *tp, struct xfs_dquot *dqp,
+ uint field, int64_t delta);
+extern void xfs_trans_dqjoin(struct xfs_trans *, struct xfs_dquot *);
+extern void xfs_trans_log_dquot(struct xfs_trans *, struct xfs_dquot *);
+
+/*
+ * We keep the usr, grp, and prj dquots separately so that locking will be
+ * easier to do at commit time. All transactions that we know of at this point
+ * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value.
+ */
+enum {
+ XFS_QM_TRANS_USR = 0,
+ XFS_QM_TRANS_GRP,
+ XFS_QM_TRANS_PRJ,
+ XFS_QM_TRANS_DQTYPES
+};
+#define XFS_QM_TRANS_MAXDQS 2
+struct xfs_dquot_acct {
+ struct xfs_dqtrx dqs[XFS_QM_TRANS_DQTYPES][XFS_QM_TRANS_MAXDQS];
+};
+
+/*
+ * Users are allowed to have a usage exceeding their softlimit for
+ * a period this long.
+ */
+#define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */
+#define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */
+#define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */
+
+extern void xfs_qm_destroy_quotainfo(struct xfs_mount *);
+
+/* quota ops */
+extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint);
+extern int xfs_qm_scall_getquota(struct xfs_mount *mp,
+ xfs_dqid_t id,
+ xfs_dqtype_t type,
+ struct qc_dqblk *dst);
+extern int xfs_qm_scall_getquota_next(struct xfs_mount *mp,
+ xfs_dqid_t *id,
+ xfs_dqtype_t type,
+ struct qc_dqblk *dst);
+extern int xfs_qm_scall_setqlim(struct xfs_mount *mp,
+ xfs_dqid_t id,
+ xfs_dqtype_t type,
+ struct qc_dqblk *newlim);
+extern int xfs_qm_scall_quotaon(struct xfs_mount *, uint);
+extern int xfs_qm_scall_quotaoff(struct xfs_mount *, uint);
+
+static inline struct xfs_def_quota *
+xfs_get_defquota(struct xfs_quotainfo *qi, xfs_dqtype_t type)
+{
+ switch (type) {
+ case XFS_DQTYPE_USER:
+ return &qi->qi_usr_default;
+ case XFS_DQTYPE_GROUP:
+ return &qi->qi_grp_default;
+ case XFS_DQTYPE_PROJ:
+ return &qi->qi_prj_default;
+ default:
+ ASSERT(0);
+ return NULL;
+ }
+}
+
+#endif /* __XFS_QM_H__ */