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- // 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__ */
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