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