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-rw-r--r--fs/xfs/libxfs/xfs_ialloc.h112
1 files changed, 112 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_ialloc.h b/fs/xfs/libxfs/xfs_ialloc.h
new file mode 100644
index 000000000..9bbbca6ac
--- /dev/null
+++ b/fs/xfs/libxfs/xfs_ialloc.h
@@ -0,0 +1,112 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2000,2005 Silicon Graphics, Inc.
+ * All Rights Reserved.
+ */
+#ifndef __XFS_IALLOC_H__
+#define __XFS_IALLOC_H__
+
+struct xfs_buf;
+struct xfs_dinode;
+struct xfs_imap;
+struct xfs_mount;
+struct xfs_trans;
+struct xfs_btree_cur;
+
+/* Move inodes in clusters of this size */
+#define XFS_INODE_BIG_CLUSTER_SIZE 8192
+
+struct xfs_icluster {
+ bool deleted; /* record is deleted */
+ xfs_ino_t first_ino; /* first inode number */
+ uint64_t alloc; /* inode phys. allocation bitmap for
+ * sparse chunks */
+};
+
+/*
+ * Make an inode pointer out of the buffer/offset.
+ */
+static inline struct xfs_dinode *
+xfs_make_iptr(struct xfs_mount *mp, struct xfs_buf *b, int o)
+{
+ return xfs_buf_offset(b, o << (mp)->m_sb.sb_inodelog);
+}
+
+/*
+ * Allocate an inode on disk. Mode is used to tell whether the new inode will
+ * need space, and whether it is a directory.
+ */
+int xfs_dialloc(struct xfs_trans **tpp, xfs_ino_t parent, umode_t mode,
+ xfs_ino_t *new_ino);
+
+int xfs_difree(struct xfs_trans *tp, struct xfs_perag *pag,
+ xfs_ino_t ino, struct xfs_icluster *ifree);
+
+/*
+ * Return the location of the inode in imap, for mapping it into a buffer.
+ */
+int
+xfs_imap(
+ struct xfs_mount *mp, /* file system mount structure */
+ struct xfs_trans *tp, /* transaction pointer */
+ xfs_ino_t ino, /* inode to locate */
+ struct xfs_imap *imap, /* location map structure */
+ uint flags); /* flags for inode btree lookup */
+
+/*
+ * Log specified fields for the ag hdr (inode section)
+ */
+void
+xfs_ialloc_log_agi(
+ struct xfs_trans *tp, /* transaction pointer */
+ struct xfs_buf *bp, /* allocation group header buffer */
+ uint32_t fields); /* bitmask of fields to log */
+
+int xfs_read_agi(struct xfs_perag *pag, struct xfs_trans *tp,
+ struct xfs_buf **agibpp);
+int xfs_ialloc_read_agi(struct xfs_perag *pag, struct xfs_trans *tp,
+ struct xfs_buf **agibpp);
+
+/*
+ * Lookup a record by ino in the btree given by cur.
+ */
+int xfs_inobt_lookup(struct xfs_btree_cur *cur, xfs_agino_t ino,
+ xfs_lookup_t dir, int *stat);
+
+/*
+ * Get the data from the pointed-to record.
+ */
+int xfs_inobt_get_rec(struct xfs_btree_cur *cur,
+ xfs_inobt_rec_incore_t *rec, int *stat);
+
+/*
+ * Inode chunk initialisation routine
+ */
+int xfs_ialloc_inode_init(struct xfs_mount *mp, struct xfs_trans *tp,
+ struct list_head *buffer_list, int icount,
+ xfs_agnumber_t agno, xfs_agblock_t agbno,
+ xfs_agblock_t length, unsigned int gen);
+
+
+union xfs_btree_rec;
+void xfs_inobt_btrec_to_irec(struct xfs_mount *mp,
+ const union xfs_btree_rec *rec,
+ struct xfs_inobt_rec_incore *irec);
+int xfs_ialloc_has_inodes_at_extent(struct xfs_btree_cur *cur,
+ xfs_agblock_t bno, xfs_extlen_t len, bool *exists);
+int xfs_ialloc_has_inode_record(struct xfs_btree_cur *cur, xfs_agino_t low,
+ xfs_agino_t high, bool *exists);
+int xfs_ialloc_count_inodes(struct xfs_btree_cur *cur, xfs_agino_t *count,
+ xfs_agino_t *freecount);
+int xfs_inobt_insert_rec(struct xfs_btree_cur *cur, uint16_t holemask,
+ uint8_t count, int32_t freecount, xfs_inofree_t free,
+ int *stat);
+
+int xfs_ialloc_cluster_alignment(struct xfs_mount *mp);
+void xfs_ialloc_setup_geometry(struct xfs_mount *mp);
+xfs_ino_t xfs_ialloc_calc_rootino(struct xfs_mount *mp, int sunit);
+
+int xfs_ialloc_check_shrink(struct xfs_trans *tp, xfs_agnumber_t agno,
+ struct xfs_buf *agibp, xfs_agblock_t new_length);
+
+#endif /* __XFS_IALLOC_H__ */