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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 | // 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 */ int fields); /* bitmask of fields to log */ /* * Read in the allocation group header (inode allocation section) */ int /* error */ xfs_ialloc_read_agi( struct xfs_mount *mp, /* file system mount structure */ struct xfs_trans *tp, /* transaction pointer */ xfs_agnumber_t agno, /* allocation group number */ struct xfs_buf **bpp); /* allocation group hdr buf */ /* * Read in the allocation group header to initialise the per-ag data * in the mount structure */ int xfs_ialloc_pagi_init( struct xfs_mount *mp, /* file system mount structure */ struct xfs_trans *tp, /* transaction pointer */ xfs_agnumber_t agno); /* allocation group number */ /* * 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); int xfs_read_agi(struct xfs_mount *mp, struct xfs_trans *tp, xfs_agnumber_t agno, struct xfs_buf **bpp); 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__ */ |